xserver libX11 libxcb mesa git update 15 Mar 2011

4 files changed, 5930 insertions, 5916 deletions

diff --git a/xorg-server/dix/devices.c b/xorg-server/dix/devices.c
index e57c27b00..7f500d63d 100644
--- a/xorg-server/dix/devices.c
+++ b/xorg-server/dix/devices.c
@@ -1,2628 +1,2630 @@
-/************************************************************
-
-Copyright 1987, 1998  The Open Group
-
-Permission to use, copy, modify, distribute, and sell this software and its
-documentation for any purpose is hereby granted without fee, provided that
-the above copyright notice appear in all copies and that both that
-copyright notice and this permission notice appear in supporting
-documentation.
-
-The above copyright notice and this permission notice shall be included in
-all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
-OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
-AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
-CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-
-Except as contained in this notice, the name of The Open Group shall not be
-used in advertising or otherwise to promote the sale, use or other dealings
-in this Software without prior written authorization from The Open Group.
-
-
-Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts.
-
-                        All Rights Reserved
-
-Permission to use, copy, modify, and distribute this software and its
-documentation for any purpose and without fee is hereby granted,
-provided that the above copyright notice appear in all copies and that
-both that copyright notice and this permission notice appear in
-supporting documentation, and that the name of Digital not be
-used in advertising or publicity pertaining to distribution of the
-software without specific, written prior permission.
-
-DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
-ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
-DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
-ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
-WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
-ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
-SOFTWARE.
-
-********************************************************/
-
-
-
-#ifdef HAVE_DIX_CONFIG_H
-#include <dix-config.h>
-#endif
-
-#include <X11/X.h>
-#include "misc.h"
-#include "resource.h"
-#include <X11/Xproto.h>
-#include <X11/Xatom.h>
-#include "windowstr.h"
-#include "inputstr.h"
-#include "scrnintstr.h"
-#include "cursorstr.h"
-#include "dixstruct.h"
-#include "ptrveloc.h"
-#include "site.h"
-#include "xkbsrv.h"
-#include "privates.h"
-#include "xace.h"
-#include "mi.h"
-
-#include "dispatch.h"
-#include "swaprep.h"
-#include "dixevents.h"
-#include "mipointer.h"
-#include "eventstr.h"
-
-#include <X11/extensions/XI.h>
-#include <X11/extensions/XI2.h>
-#include <X11/extensions/XIproto.h>
-#include <math.h>
-#include <pixman.h>
-#include "exglobals.h"
-#include "exevents.h"
-#include "xiquerydevice.h" /* for SizeDeviceClasses */
-#include "xiproperty.h"
-#include "enterleave.h" /* for EnterWindow() */
-#include "xserver-properties.h"
-#include "xichangehierarchy.h" /* For XISendDeviceHierarchyEvent */
-
-/** @file
- * This file handles input device-related stuff.
- */
-
-static void RecalculateMasterButtons(DeviceIntPtr slave);
-
-static void
-DeviceSetTransform(DeviceIntPtr dev, float *transform)
-{
-    struct pixman_f_transform scale;
-    double sx, sy;
-    int x, y;
-
-    /**
-     * calculate combined transformation matrix:
-     *
-     * M = InvScale * Transform * Scale
-     *
-     * So we can later transform points using M * p
-     *
-     * Where:
-     *  Scale scales coordinates into 0..1 range
-     *  Transform is the user supplied (affine) transform
-     *  InvScale scales coordinates back up into their native range
-     */
-    sx = dev->valuator->axes[0].max_value - dev->valuator->axes[0].min_value;
-    sy = dev->valuator->axes[1].max_value - dev->valuator->axes[1].min_value;
-
-    /* invscale */
-    pixman_f_transform_init_scale(&scale, sx, sy);
-    scale.m[0][2] = dev->valuator->axes[0].min_value;
-    scale.m[1][2] = dev->valuator->axes[1].min_value;
-
-    /* transform */
-    for (y=0; y<3; y++)
-        for (x=0; x<3; x++)
-            dev->transform.m[y][x] = *transform++;
-
-    pixman_f_transform_multiply(&dev->transform, &scale, &dev->transform);
-
-    /* scale */
-    pixman_f_transform_init_scale(&scale, 1.0 / sx, 1.0 / sy);
-    scale.m[0][2] = -dev->valuator->axes[0].min_value / sx;
-    scale.m[1][2] = -dev->valuator->axes[1].min_value / sy;
-
-    pixman_f_transform_multiply(&dev->transform, &dev->transform, &scale);
-}
-
-/**
- * DIX property handler.
- */
-static int
-DeviceSetProperty(DeviceIntPtr dev, Atom property, XIPropertyValuePtr prop,
-                  BOOL checkonly)
-{
-    if (property == XIGetKnownProperty(XI_PROP_ENABLED))
-    {
-        if (prop->format != 8 || prop->type != XA_INTEGER || prop->size != 1)
-            return BadValue;
-
-        /* Don't allow disabling of VCP/VCK */
-        if ((dev == inputInfo.pointer || dev == inputInfo.keyboard) &&
-            !(*(CARD8*)prop->data))
-            return BadAccess;
-
-        if (!checkonly)
-        {
-            if ((*((CARD8*)prop->data)) && !dev->enabled)
-                EnableDevice(dev, TRUE);
-            else if (!(*((CARD8*)prop->data)) && dev->enabled)
-                DisableDevice(dev, TRUE);
-        }
-    } else if (property == XIGetKnownProperty(XI_PROP_TRANSFORM))
-    {
-        float *f = (float*)prop->data;
-        int i;
-
-        if (prop->format != 32 || prop->size != 9 ||
-            prop->type != XIGetKnownProperty(XATOM_FLOAT))
-            return BadValue;
-
-        for (i=0; i<9; i++)
-            if (!isfinite(f[i]))
-                return BadValue;
-
-        if (!checkonly)
-            DeviceSetTransform(dev, f);
-    }
-
-    return Success;
-}
-
-/* Pair the keyboard to the pointer device. Keyboard events will follow the
- * pointer sprite. Only applicable for master devices.
- * If the client is set, the request to pair comes from some client. In this
- * case, we need to check for access. If the client is NULL, it's from an
- * internal automatic pairing, we must always permit this.
- */
-static int
-PairDevices(ClientPtr client, DeviceIntPtr ptr, DeviceIntPtr kbd)
-{
-    if (!ptr)
-        return BadDevice;
-
-    /* Don't allow pairing for slave devices */
-    if (!IsMaster(ptr) || !IsMaster(kbd))
-        return BadDevice;
-
-    if (ptr->spriteInfo->paired)
-        return BadDevice;
-
-    if (kbd->spriteInfo->spriteOwner)
-    {
-        free(kbd->spriteInfo->sprite);
-        kbd->spriteInfo->sprite = NULL;
-        kbd->spriteInfo->spriteOwner = FALSE;
-    }
-
-    kbd->spriteInfo->sprite = ptr->spriteInfo->sprite;
-    kbd->spriteInfo->paired = ptr;
-    ptr->spriteInfo->paired = kbd;
-    return Success;
-}
-
-
-/**
- * Find and return the next unpaired MD pointer device.
- */
-static DeviceIntPtr
-NextFreePointerDevice(void)
-{
-    DeviceIntPtr dev;
-    for (dev = inputInfo.devices; dev; dev = dev->next)
-        if (IsMaster(dev) &&
-                dev->spriteInfo->spriteOwner &&
-                !dev->spriteInfo->paired)
-            return dev;
-    return NULL;
-}
-
-/**
- * Create a new input device and init it to sane values. The device is added
- * to the server's off_devices list.
- *
- * @param deviceProc Callback for device control function (switch dev on/off).
- * @return The newly created device.
- */
-DeviceIntPtr
-AddInputDevice(ClientPtr client, DeviceProc deviceProc, Bool autoStart)
-{
-    DeviceIntPtr dev, *prev; /* not a typo */
-    DeviceIntPtr devtmp;
-    int devid;
-    char devind[MAXDEVICES];
-    BOOL enabled;
-    float transform[9];
-
-    /* Find next available id, 0 and 1 are reserved */
-    memset(devind, 0, sizeof(char)*MAXDEVICES);
-    for (devtmp = inputInfo.devices; devtmp; devtmp = devtmp->next)
-	devind[devtmp->id]++;
-    for (devtmp = inputInfo.off_devices; devtmp; devtmp = devtmp->next)
-	devind[devtmp->id]++;
-    for (devid = 2; devid < MAXDEVICES && devind[devid]; devid++)
-	;
-
-    if (devid >= MAXDEVICES)
-	return (DeviceIntPtr)NULL;
-    dev =  _dixAllocateObjectWithPrivates(sizeof(DeviceIntRec) + sizeof(SpriteInfoRec),
-					  sizeof(DeviceIntRec) + sizeof(SpriteInfoRec),
-					  offsetof(DeviceIntRec, devPrivates), PRIVATE_DEVICE);
-    if (!dev)
-	return (DeviceIntPtr)NULL;
-    dev->id = devid;
-    dev->public.processInputProc = ProcessOtherEvent;
-    dev->public.realInputProc = ProcessOtherEvent;
-    dev->public.enqueueInputProc = EnqueueEvent;
-    dev->deviceProc = deviceProc;
-    dev->startup = autoStart;
-
-    /* device grab defaults */
-    dev->deviceGrab.grabTime = currentTime;
-    dev->deviceGrab.ActivateGrab = ActivateKeyboardGrab;
-    dev->deviceGrab.DeactivateGrab = DeactivateKeyboardGrab;
-
-    XkbSetExtension(dev, ProcessKeyboardEvent);
-
-    dev->coreEvents = TRUE;
-
-    /* sprite defaults */
-    dev->spriteInfo = (SpriteInfoPtr)&dev[1];
-
-    /*  security creation/labeling check
-     */
-    if (XaceHook(XACE_DEVICE_ACCESS, client, dev, DixCreateAccess)) {
-	free(dev);
-	return NULL;
-    }
-
-    inputInfo.numDevices++;
-
-    for (prev = &inputInfo.off_devices; *prev; prev = &(*prev)->next)
-        ;
-    *prev = dev;
-    dev->next = NULL;
-
-    enabled = FALSE;
-    XIChangeDeviceProperty(dev, XIGetKnownProperty(XI_PROP_ENABLED),
-                           XA_INTEGER, 8, PropModeReplace, 1, &enabled,
-                           FALSE);
-    XISetDevicePropertyDeletable(dev, XIGetKnownProperty(XI_PROP_ENABLED), FALSE);
-
-    /* unity matrix */
-    memset(transform, 0, sizeof(transform));
-    transform[0] = transform[4] = transform[8] = 1.0f;
-
-    XIChangeDeviceProperty(dev, XIGetKnownProperty(XI_PROP_TRANSFORM),
-                           XIGetKnownProperty(XATOM_FLOAT), 32,
-                           PropModeReplace, 9, transform, FALSE);
-    XISetDevicePropertyDeletable(dev, XIGetKnownProperty(XI_PROP_TRANSFORM),
-                                 FALSE);
-
-    XIRegisterPropertyHandler(dev, DeviceSetProperty, NULL, NULL);
-
-    return dev;
-}
-
-void
-SendDevicePresenceEvent(int deviceid, int type)
-{
-    DeviceIntRec dummyDev;
-    devicePresenceNotify ev;
-
-    memset(&dummyDev, 0, sizeof(DeviceIntRec));
-    ev.type = DevicePresenceNotify;
-    ev.time = currentTime.milliseconds;
-    ev.devchange = type;
-    ev.deviceid = deviceid;
-    dummyDev.id = XIAllDevices;
-    SendEventToAllWindows(&dummyDev, DevicePresenceNotifyMask,
-                          (xEvent*)&ev, 1);
-}
-
-/**
- * Enable the device through the driver, add the device to the device list.
- * Switch device ON through the driver and push it onto the global device
- * list. Initialize the DIX sprite or pair the device. All clients are
- * notified about the device being enabled.
- *
- * A master pointer device needs to be enabled before a master keyboard
- * device.
- *
- * @param The device to be enabled.
- * @param sendevent True if an XI2 event should be sent.
- * @return TRUE on success or FALSE otherwise.
- */
-Bool
-EnableDevice(DeviceIntPtr dev, BOOL sendevent)
-{
-    DeviceIntPtr *prev;
-    int ret;
-    DeviceIntPtr other;
-    BOOL enabled;
-    int flags[MAXDEVICES] = {0};
-
-    for (prev = &inputInfo.off_devices;
-	 *prev && (*prev != dev);
-	 prev = &(*prev)->next)
-	;
-
-    if (!dev->spriteInfo->sprite)
-    {
-        if (IsMaster(dev))
-        {
-            /* Sprites appear on first root window, so we can hardcode it */
-            if (dev->spriteInfo->spriteOwner)
-            {
-                InitializeSprite(dev, screenInfo.screens[0]->root);
-                                                 /* mode doesn't matter */
-                EnterWindow(dev, screenInfo.screens[0]->root, NotifyAncestor);
-            }
-            else if ((other = NextFreePointerDevice()) == NULL)
-            {
-                ErrorF("[dix] cannot find pointer to pair with. "
-                       "This is a bug.\n");
-                return FALSE;
-            } else
-                PairDevices(NULL, other, dev);
-        } else
-        {
-            if (dev->coreEvents)
-                other = (IsPointerDevice(dev)) ? inputInfo.pointer :
-                    inputInfo.keyboard;
-            else
-                other = NULL; /* auto-float non-core devices */
-            AttachDevice(NULL, dev, other);
-        }
-    }
-
-    if ((*prev != dev) || !dev->inited ||
-	((ret = (*dev->deviceProc)(dev, DEVICE_ON)) != Success)) {
-        ErrorF("[dix] couldn't enable device %d\n", dev->id);
-	return FALSE;
-    }
-    dev->enabled = TRUE;
-    *prev = dev->next;
-
-    for (prev = &inputInfo.devices; *prev; prev = &(*prev)->next)
-        ;
-    *prev = dev;
-    dev->next = NULL;
-
-    enabled = TRUE;
-    XIChangeDeviceProperty(dev, XIGetKnownProperty(XI_PROP_ENABLED),
-                           XA_INTEGER, 8, PropModeReplace, 1, &enabled,
-                           TRUE);
-
-    SendDevicePresenceEvent(dev->id, DeviceEnabled);
-    if (sendevent)
-    {
-        flags[dev->id] |= XIDeviceEnabled;
-        XISendDeviceHierarchyEvent(flags);
-    }
-
-    RecalculateMasterButtons(dev);
-
-    return TRUE;
-}
-
-/**
- * Switch a device off through the driver and push it onto the off_devices
- * list. A device will not send events while disabled. All clients are
- * notified about the device being disabled.
- *
- * Master keyboard devices have to be disabled before master pointer devices
- * otherwise things turn bad.
- *
- * @param sendevent True if an XI2 event should be sent.
- * @return TRUE on success or FALSE otherwise.
- */
-Bool
-DisableDevice(DeviceIntPtr dev, BOOL sendevent)
-{
-    DeviceIntPtr *prev, other;
-    BOOL enabled;
-    int flags[MAXDEVICES] = {0};
-
-    for (prev = &inputInfo.devices;
-	 *prev && (*prev != dev);
-	 prev = &(*prev)->next)
-	;
-    if (*prev != dev)
-	return FALSE;
-
-    /* float attached devices */
-    if (IsMaster(dev))
-    {
-        for (other = inputInfo.devices; other; other = other->next)
-        {
-            if (!IsMaster(other) && GetMaster(other, MASTER_ATTACHED) == dev)
-            {
-                AttachDevice(NULL, other, NULL);
-                flags[other->id] |= XISlaveDetached;
-            }
-        }
-    }
-    else
-    {
-        for (other = inputInfo.devices; other; other = other->next)
-        {
-	    if (IsMaster(other) && other->lastSlave == dev)
-		other->lastSlave = NULL;
-	}
-    }
-
-    if (IsMaster(dev) && dev->spriteInfo->sprite)
-    {
-        for (other = inputInfo.devices; other; other = other->next)
-        {
-            if (other->spriteInfo->paired == dev)
-            {
-                ErrorF("[dix] cannot disable device, still paired. "
-                        "This is a bug. \n");
-                return FALSE;
-            }
-        }
-    }
-
-    (void)(*dev->deviceProc)(dev, DEVICE_OFF);
-    dev->enabled = FALSE;
-
-    /* now that the device is disabled, we can reset the signal handler's
-     * last.slave */
-    OsBlockSignals();
-    for (other = inputInfo.devices; other; other = other->next)
-    {
-        if (other->last.slave == dev)
-            other->last.slave = NULL;
-    }
-    OsReleaseSignals();
-
-    LeaveWindow(dev);
-    SetFocusOut(dev);
-
-    *prev = dev->next;
-    dev->next = inputInfo.off_devices;
-    inputInfo.off_devices = dev;
-
-    enabled = FALSE;
-    XIChangeDeviceProperty(dev, XIGetKnownProperty(XI_PROP_ENABLED),
-                           XA_INTEGER, 8, PropModeReplace, 1, &enabled,
-                           TRUE);
-
-    SendDevicePresenceEvent(dev->id, DeviceDisabled);
-    if (sendevent)
-    {
-        flags[dev->id] = XIDeviceDisabled;
-        XISendDeviceHierarchyEvent(flags);
-    }
-
-    RecalculateMasterButtons(dev);
-
-    return TRUE;
-}
-
-/**
- * Initialise a new device through the driver and tell all clients about the
- * new device.
- *
- * Must be called before EnableDevice.
- * The device will NOT send events until it is enabled!
- *
- * @param sendevent True if an XI2 event should be sent.
- * @return Success or an error code on failure.
- */
-int
-ActivateDevice(DeviceIntPtr dev, BOOL sendevent)
-{
-    int ret = Success;
-    ScreenPtr pScreen = screenInfo.screens[0];
-
-    if (!dev || !dev->deviceProc)
-        return BadImplementation;
-
-    ret = (*dev->deviceProc) (dev, DEVICE_INIT);
-    dev->inited = (ret == Success);
-    if (!dev->inited)
-        return ret;
-
-    /* Initialize memory for sprites. */
-    if (IsMaster(dev) && dev->spriteInfo->spriteOwner)
-        if (!pScreen->DeviceCursorInitialize(dev, pScreen))
-            ret = BadAlloc;
-
-    SendDevicePresenceEvent(dev->id, DeviceAdded);
-    if (sendevent)
-    {
-        int flags[MAXDEVICES] = {0};
-        flags[dev->id] = XISlaveAdded;
-        XISendDeviceHierarchyEvent(flags);
-    }
-    return ret;
-}
-
-/**
- * Ring the bell.
- * The actual task of ringing the bell is the job of the DDX.
- */
-static void
-CoreKeyboardBell(int volume, DeviceIntPtr pDev, pointer arg, int something)
-{
-    KeybdCtrl *ctrl = arg;
-
-    DDXRingBell(volume, ctrl->bell_pitch, ctrl->bell_duration);
-}
-
-static void
-CoreKeyboardCtl(DeviceIntPtr pDev, KeybdCtrl *ctrl)
-{
-    return;
-}
-
-/**
- * Device control function for the Virtual Core Keyboard.
- */
-int
-CoreKeyboardProc(DeviceIntPtr pDev, int what)
-{
-
-    switch (what) {
-    case DEVICE_INIT:
-        if (!InitKeyboardDeviceStruct(pDev, NULL, CoreKeyboardBell,
-                                      CoreKeyboardCtl))
-        {
-            ErrorF("Keyboard initialization failed. This could be a missing "
-                   "or incorrect setup of xkeyboard-config.\n");
-            return BadValue;
-        }
-        return Success;
-
-    case DEVICE_ON:
-    case DEVICE_OFF:
-        return Success;
-
-    case DEVICE_CLOSE:
-        return Success;
-    }
-
-    return BadMatch;
-}
-
-/**
- * Device control function for the Virtual Core Pointer.
- */
-int
-CorePointerProc(DeviceIntPtr pDev, int what)
-{
-#define NBUTTONS 10
-#define NAXES 2
-    BYTE map[NBUTTONS + 1];
-    int i = 0;
-    Atom btn_labels[NBUTTONS] = {0};
-    Atom axes_labels[NAXES] = {0};
-
-    switch (what) {
-    case DEVICE_INIT:
-        for (i = 1; i <= NBUTTONS; i++)
-            map[i] = i;
-
-	btn_labels[0] = XIGetKnownProperty(BTN_LABEL_PROP_BTN_LEFT);
-	btn_labels[1] = XIGetKnownProperty(BTN_LABEL_PROP_BTN_MIDDLE);
-	btn_labels[2] = XIGetKnownProperty(BTN_LABEL_PROP_BTN_RIGHT);
-	btn_labels[3] = XIGetKnownProperty(BTN_LABEL_PROP_BTN_WHEEL_UP);
-	btn_labels[4] = XIGetKnownProperty(BTN_LABEL_PROP_BTN_WHEEL_DOWN);
-	btn_labels[5] = XIGetKnownProperty(BTN_LABEL_PROP_BTN_HWHEEL_LEFT);
-	btn_labels[6] = XIGetKnownProperty(BTN_LABEL_PROP_BTN_HWHEEL_RIGHT);
-	/* don't know about the rest */
-
-	axes_labels[0] = XIGetKnownProperty(AXIS_LABEL_PROP_REL_X);
-	axes_labels[1] = XIGetKnownProperty(AXIS_LABEL_PROP_REL_Y);
-
-        if (!InitPointerDeviceStruct((DevicePtr)pDev, map, NBUTTONS, btn_labels,
-                                (PtrCtrlProcPtr)NoopDDA,
-                                GetMotionHistorySize(), NAXES, axes_labels))
-        {
-            ErrorF("Could not initialize device '%s'. Out of memory.\n",
-                   pDev->name);
-            return BadAlloc; /* IPDS only fails on allocs */
-        }
-        pDev->valuator->axisVal[0] = screenInfo.screens[0]->width / 2;
-        pDev->last.valuators[0] = pDev->valuator->axisVal[0];
-        pDev->valuator->axisVal[1] = screenInfo.screens[0]->height / 2;
-        pDev->last.valuators[1] = pDev->valuator->axisVal[1];
-        break;
-
-    case DEVICE_CLOSE:
-        break;
-
-    default:
-        break;
-    }
-
-    return Success;
-
-#undef NBUTTONS
-#undef NAXES
-}
-
-/**
- * Initialise the two core devices, VCP and VCK (see events.c).
- * Both devices are not tied to physical devices, but guarantee that there is
- * always a keyboard and a pointer present and keep the protocol semantics.
- *
- * Note that the server MUST have two core devices at all times, even if there
- * is no physical device connected.
- */
-void
-InitCoreDevices(void)
-{
-    if (AllocDevicePair(serverClient, "Virtual core",
-                        &inputInfo.pointer, &inputInfo.keyboard,
-                        CorePointerProc, CoreKeyboardProc,
-                        TRUE) != Success)
-        FatalError("Failed to allocate core devices");
-
-    if (ActivateDevice(inputInfo.pointer, TRUE) != Success ||
-        ActivateDevice(inputInfo.keyboard, TRUE) != Success)
-        FatalError("Failed to activate core devices.");
-    if (!EnableDevice(inputInfo.pointer, TRUE) ||
-        !EnableDevice(inputInfo.keyboard, TRUE))
-        FatalError("Failed to enable core devices.");
-
-    InitXTestDevices();
-}
-
-/**
- * Activate all switched-off devices and then enable all those devices.
- *
- * Will return an error if no core keyboard or core pointer is present.
- * In theory this should never happen if you call InitCoreDevices() first.
- *
- * InitAndStartDevices needs to be called AFTER the windows are initialized.
- * Devices will start sending events after InitAndStartDevices() has
- * completed.
- *
- * @return Success or error code on failure.
- */
-int
-InitAndStartDevices(void)
-{
-    DeviceIntPtr dev, next;
-
-    for (dev = inputInfo.off_devices; dev; dev = dev->next) {
-        DebugF("(dix) initialising device %d\n", dev->id);
-        if (!dev->inited)
-            ActivateDevice(dev, TRUE);
-    }
-
-    /* enable real devices */
-    for (dev = inputInfo.off_devices; dev; dev = next)
-    {
-        DebugF("(dix) enabling device %d\n", dev->id);
-	next = dev->next;
-	if (dev->inited && dev->startup)
-	    EnableDevice(dev, TRUE);
-    }
-
-    return Success;
-}
-
-/**
- * Free the given device class and reset the pointer to NULL.
- */
-static void
-FreeDeviceClass(int type, pointer *class)
-{
-    if (!(*class))
-        return;
-
-    switch(type)
-    {
-        case KeyClass:
-            {
-                KeyClassPtr* k = (KeyClassPtr*)class;
-                if ((*k)->xkbInfo)
-                {
-                    XkbFreeInfo((*k)->xkbInfo);
-                    (*k)->xkbInfo = NULL;
-                }
-                free((*k));
-                break;
-            }
-        case ButtonClass:
-            {
-                ButtonClassPtr *b = (ButtonClassPtr*)class;
-                free((*b)->xkb_acts);
-                free((*b));
-                break;
-            }
-        case ValuatorClass:
-            {
-                ValuatorClassPtr *v = (ValuatorClassPtr*)class;
-
-                free((*v)->motion);
-                free((*v));
-                break;
-            }
-        case FocusClass:
-            {
-                FocusClassPtr *f = (FocusClassPtr*)class;
-                free((*f)->trace);
-                free((*f));
-                break;
-            }
-        case ProximityClass:
-            {
-                ProximityClassPtr *p = (ProximityClassPtr*)class;
-                free((*p));
-                break;
-            }
-    }
-    *class = NULL;
-}
-
-static void
-FreeFeedbackClass(int type, pointer *class)
-{
-    if (!(*class))
-        return;
-
-    switch(type)
-    {
-        case KbdFeedbackClass:
-            {
-                KbdFeedbackPtr *kbdfeed = (KbdFeedbackPtr*)class;
-                KbdFeedbackPtr k, knext;
-                for (k = (*kbdfeed); k; k = knext) {
-                    knext = k->next;
-                    if (k->xkb_sli)
-                        XkbFreeSrvLedInfo(k->xkb_sli);
-                    free(k);
-                }
-                break;
-            }
-        case PtrFeedbackClass:
-            {
-                PtrFeedbackPtr *ptrfeed = (PtrFeedbackPtr*)class;
-                PtrFeedbackPtr p, pnext;
-
-                for (p = (*ptrfeed); p; p = pnext) {
-                    pnext = p->next;
-                    free(p);
-                }
-                break;
-            }
-        case IntegerFeedbackClass:
-            {
-                IntegerFeedbackPtr *intfeed = (IntegerFeedbackPtr*)class;
-                IntegerFeedbackPtr i, inext;
-
-                for (i = (*intfeed); i; i = inext) {
-                    inext = i->next;
-                    free(i);
-                }
-                break;
-            }
-        case StringFeedbackClass:
-            {
-                StringFeedbackPtr *stringfeed = (StringFeedbackPtr*)class;
-                StringFeedbackPtr s, snext;
-
-                for (s = (*stringfeed); s; s = snext) {
-                    snext = s->next;
-                    free(s->ctrl.symbols_supported);
-                    free(s->ctrl.symbols_displayed);
-                    free(s);
-                }
-                break;
-            }
-        case BellFeedbackClass:
-            {
-                BellFeedbackPtr *bell = (BellFeedbackPtr*)class;
-                BellFeedbackPtr b, bnext;
-
-                for (b = (*bell); b; b = bnext) {
-                    bnext = b->next;
-                    free(b);
-                }
-                break;
-            }
-        case LedFeedbackClass:
-            {
-                LedFeedbackPtr *leds = (LedFeedbackPtr*)class;
-                LedFeedbackPtr l, lnext;
-
-                for (l = (*leds); l; l = lnext) {
-                    lnext = l->next;
-                    if (l->xkb_sli)
-                        XkbFreeSrvLedInfo(l->xkb_sli);
-                    free(l);
-                }
-                break;
-            }
-    }
-    *class = NULL;
-}
-
-static void
-FreeAllDeviceClasses(ClassesPtr classes)
-{
-    if (!classes)
-        return;
-
-    FreeDeviceClass(KeyClass, (pointer)&classes->key);
-    FreeDeviceClass(ValuatorClass, (pointer)&classes->valuator);
-    FreeDeviceClass(ButtonClass, (pointer)&classes->button);
-    FreeDeviceClass(FocusClass, (pointer)&classes->focus);
-    FreeDeviceClass(ProximityClass, (pointer)&classes->proximity);
-
-    FreeFeedbackClass(KbdFeedbackClass, (pointer)&classes->kbdfeed);
-    FreeFeedbackClass(PtrFeedbackClass, (pointer)&classes->ptrfeed);
-    FreeFeedbackClass(IntegerFeedbackClass, (pointer)&classes->intfeed);
-    FreeFeedbackClass(StringFeedbackClass, (pointer)&classes->stringfeed);
-    FreeFeedbackClass(BellFeedbackClass, (pointer)&classes->bell);
-    FreeFeedbackClass(LedFeedbackClass, (pointer)&classes->leds);
-
-}
-
-/**
- * Close down a device and free all resources.
- * Once closed down, the driver will probably not expect you that you'll ever
- * enable it again and free associated structs. If you want the device to just
- * be disabled, DisableDevice().
- * Don't call this function directly, use RemoveDevice() instead.
- */
-static void
-CloseDevice(DeviceIntPtr dev)
-{
-    ScreenPtr screen = screenInfo.screens[0];
-    ClassesPtr classes;
-    int j;
-
-    if (!dev)
-        return;
-
-    XIDeleteAllDeviceProperties(dev);
-
-    if (dev->inited)
-	(void)(*dev->deviceProc)(dev, DEVICE_CLOSE);
-
-    /* free sprite memory */
-    if (IsMaster(dev) && dev->spriteInfo->sprite)
-        screen->DeviceCursorCleanup(dev, screen);
-
-    /* free acceleration info */
-    if(dev->valuator && dev->valuator->accelScheme.AccelCleanupProc)
-	dev->valuator->accelScheme.AccelCleanupProc(dev);
-
-    while (dev->xkb_interest)
-	XkbRemoveResourceClient((DevicePtr)dev,dev->xkb_interest->resource);
-
-    free(dev->name);
-
-    classes = (ClassesPtr)&dev->key;
-    FreeAllDeviceClasses(classes);
-
-    if (IsMaster(dev))
-    {
-        classes = dev->unused_classes;
-        FreeAllDeviceClasses(classes);
-	free(classes);
-    }
-
-    if (DevHasCursor(dev) && dev->spriteInfo->sprite) {
-	if (dev->spriteInfo->sprite->current)
-	    FreeCursor(dev->spriteInfo->sprite->current, None);
-        free(dev->spriteInfo->sprite->spriteTrace);
-        free(dev->spriteInfo->sprite);
-    }
-
-    /* a client may have the device set as client pointer */
-    for (j = 0; j < currentMaxClients; j++)
-    {
-        if (clients[j] && clients[j]->clientPtr == dev)
-        {
-            clients[j]->clientPtr = NULL;
-            clients[j]->clientPtr = PickPointer(clients[j]);
-        }
-    }
-
-    free(dev->deviceGrab.sync.event);
-    dixFreeObjectWithPrivates(dev, PRIVATE_DEVICE);
-}
-
-/**
- * Shut down all devices of one list and free all resources.
- */
-static
-void
-CloseDeviceList(DeviceIntPtr *listHead)
-{
-    /* Used to mark devices that we tried to free */
-    Bool freedIds[MAXDEVICES];
-    DeviceIntPtr dev;
-    int i;
-
-    if (listHead == NULL)
-        return;
-
-    for (i = 0; i < MAXDEVICES; i++)
-        freedIds[i] = FALSE;
-
-    dev = *listHead;
-    while (dev != NULL)
-    {
-        freedIds[dev->id] = TRUE;
-        DeleteInputDeviceRequest(dev);
-
-        dev = *listHead;
-        while (dev != NULL && freedIds[dev->id])
-            dev = dev->next;
-    }
-}
-
-/**
- * Shut down all devices, free all resources, etc.
- * Only useful if you're shutting down the server!
- */
-void
-CloseDownDevices(void)
-{
-    DeviceIntPtr dev;
-
-    /* Float all SDs before closing them. Note that at this point resources
-     * (e.g. cursors) have been freed already, so we can't just call
-     * AttachDevice(NULL, dev, NULL). Instead, we have to forcibly set master
-     * to NULL and pretend nothing happened.
-     */
-    for (dev = inputInfo.devices; dev; dev = dev->next)
-    {
-        if (!IsMaster(dev) && !IsFloating(dev))
-            dev->master = NULL;
-    }
-
-    CloseDeviceList(&inputInfo.devices);
-    CloseDeviceList(&inputInfo.off_devices);
-
-    CloseDevice(inputInfo.pointer);
-    CloseDevice(inputInfo.keyboard);
-
-    inputInfo.devices = NULL;
-    inputInfo.off_devices = NULL;
-    inputInfo.keyboard = NULL;
-    inputInfo.pointer = NULL;
-    XkbDeleteRulesDflts();
-}
-
-/**
- * Remove the cursor sprite for all devices. This needs to be done before any
- * resources are freed or any device is deleted.
- */
-void
-UndisplayDevices(void)
-{
-    DeviceIntPtr dev;
-    ScreenPtr screen = screenInfo.screens[0];
-
-    for (dev = inputInfo.devices; dev; dev = dev->next)
-        screen->DisplayCursor(dev, screen, NullCursor);
-}
-
-/**
- * Remove a device from the device list, closes it and thus frees all
- * resources.
- * Removes both enabled and disabled devices and notifies all devices about
- * the removal of the device.
- *
- * No PresenceNotify is sent for device that the client never saw. This can
- * happen if a malloc fails during the addition of master devices. If
- * dev->init is FALSE it means the client never received a DeviceAdded event,
- * so let's not send a DeviceRemoved event either.
- *
- * @param sendevent True if an XI2 event should be sent.
- */
-int
-RemoveDevice(DeviceIntPtr dev, BOOL sendevent)
-{
-    DeviceIntPtr prev,tmp,next;
-    int ret = BadMatch;
-    ScreenPtr screen = screenInfo.screens[0];
-    int deviceid;
-    int initialized;
-    int flags[MAXDEVICES] = {0};
-
-    DebugF("(dix) removing device %d\n", dev->id);
-
-    if (!dev || dev == inputInfo.keyboard || dev == inputInfo.pointer)
-        return BadImplementation;
-
-    initialized = dev->inited;
-    deviceid = dev->id;
-
-    if (initialized)
-    {
-        if (DevHasCursor(dev))
-            screen->DisplayCursor(dev, screen, NullCursor);
-
-        DisableDevice(dev, sendevent);
-        flags[dev->id] = XIDeviceDisabled;
-    }
-
-    prev = NULL;
-    for (tmp = inputInfo.devices; tmp; (prev = tmp), (tmp = next)) {
-	next = tmp->next;
-	if (tmp == dev) {
-
-	    if (prev==NULL)
-		inputInfo.devices = next;
-	    else
-		prev->next = next;
-
-	    flags[tmp->id] = IsMaster(tmp) ? XIMasterRemoved : XISlaveRemoved;
-	    CloseDevice(tmp);
-	    ret = Success;
-	}
-    }
-
-    prev = NULL;
-    for (tmp = inputInfo.off_devices; tmp; (prev = tmp), (tmp = next)) {
-	next = tmp->next;
-	if (tmp == dev) {
-	    flags[tmp->id] = IsMaster(tmp) ? XIMasterRemoved : XISlaveRemoved;
-	    CloseDevice(tmp);
-
-	    if (prev == NULL)
-		inputInfo.off_devices = next;
-	    else
-		prev->next = next;
-
-            ret = Success;
-	}
-    }
-
-    if (ret == Success && initialized) {
-        inputInfo.numDevices--;
-        SendDevicePresenceEvent(deviceid, DeviceRemoved);
-        if (sendevent)
-            XISendDeviceHierarchyEvent(flags);
-    }
-
-    return ret;
-}
-
-int
-NumMotionEvents(void)
-{
-    /* only called to fill data in initial connection reply.
-     * VCP is ok here, it is the only fixed device we have. */
-    return inputInfo.pointer->valuator->numMotionEvents;
-}
-
-int
-dixLookupDevice(DeviceIntPtr *pDev, int id, ClientPtr client, Mask access_mode)
-{
-    DeviceIntPtr dev;
-    int rc;
-    *pDev = NULL;
-
-    for (dev=inputInfo.devices; dev; dev=dev->next) {
-        if (dev->id == id)
-            goto found;
-    }
-    for (dev=inputInfo.off_devices; dev; dev=dev->next) {
-        if (dev->id == id)
-	    goto found;
-    }
-    return BadDevice;
-
-found:
-    rc = XaceHook(XACE_DEVICE_ACCESS, client, dev, access_mode);
-    if (rc == Success)
-	*pDev = dev;
-    return rc;
-}
-
-void
-QueryMinMaxKeyCodes(KeyCode *minCode, KeyCode *maxCode)
-{
-    if (inputInfo.keyboard) {
-	*minCode = inputInfo.keyboard->key->xkbInfo->desc->min_key_code;
-	*maxCode = inputInfo.keyboard->key->xkbInfo->desc->max_key_code;
-    }
-}
-
-/* Notably, this function does not expand the destination's keycode range, or
- * notify clients. */
-Bool
-SetKeySymsMap(KeySymsPtr dst, KeySymsPtr src)
-{
-    int i, j;
-    KeySym *tmp;
-    int rowDif = src->minKeyCode - dst->minKeyCode;
-
-    /* if keysym map size changes, grow map first */
-    if (src->mapWidth < dst->mapWidth) {
-        for (i = src->minKeyCode; i <= src->maxKeyCode; i++) {
-#define SI(r, c) (((r - src->minKeyCode) * src->mapWidth) + (c))
-#define DI(r, c) (((r - dst->minKeyCode) * dst->mapWidth) + (c))
-	    for (j = 0; j < src->mapWidth; j++)
-		dst->map[DI(i, j)] = src->map[SI(i, j)];
-	    for (j = src->mapWidth; j < dst->mapWidth; j++)
-		dst->map[DI(i, j)] = NoSymbol;
-#undef SI
-#undef DI
-	}
-	return TRUE;
-    }
-    else if (src->mapWidth > dst->mapWidth) {
-        i = sizeof(KeySym) * src->mapWidth *
-             (dst->maxKeyCode - dst->minKeyCode + 1);
-        tmp = calloc(sizeof(KeySym), i);
-        if (!tmp)
-            return FALSE;
-
-        if (dst->map) {
-            for (i = 0; i <= dst->maxKeyCode-dst->minKeyCode; i++)
-                memmove(&tmp[i * src->mapWidth], &dst->map[i * dst->mapWidth],
-                        dst->mapWidth * sizeof(KeySym));
-            free(dst->map);
-        }
-        dst->mapWidth = src->mapWidth;
-        dst->map = tmp;
-    }
-    else if (!dst->map) {
-        i = sizeof(KeySym) * src->mapWidth *
-             (dst->maxKeyCode - dst->minKeyCode + 1);
-        tmp = calloc(sizeof(KeySym), i);
-        if (!tmp)
-            return FALSE;
-
-        dst->map = tmp;
-        dst->mapWidth = src->mapWidth;
-    }
-
-    memmove(&dst->map[rowDif * dst->mapWidth], src->map,
-            (src->maxKeyCode - src->minKeyCode + 1) *
-            dst->mapWidth * sizeof(KeySym));
-
-    return TRUE;
-}
-
-Bool
-InitButtonClassDeviceStruct(DeviceIntPtr dev, int numButtons, Atom* labels,
-                            CARD8 *map)
-{
-    ButtonClassPtr butc;
-    int i;
-
-    butc = calloc(1, sizeof(ButtonClassRec));
-    if (!butc)
-	return FALSE;
-    butc->numButtons = numButtons;
-    butc->sourceid = dev->id;
-    for (i = 1; i <= numButtons; i++)
-	butc->map[i] = map[i];
-    for (i = numButtons + 1; i < MAP_LENGTH; i++)
-        butc->map[i] = i;
-    memcpy(butc->labels, labels, numButtons * sizeof(Atom));
-    dev->button = butc;
-    return TRUE;
-}
-
-Bool
-InitValuatorClassDeviceStruct(DeviceIntPtr dev, int numAxes, Atom *labels,
-                              int numMotionEvents, int mode)
-{
-    int i;
-    ValuatorClassPtr valc;
-    union align_u { ValuatorClassRec valc; double d; } *align;
-
-    if (!dev)
-        return FALSE;
-
-    if (numAxes > MAX_VALUATORS)
-    {
-        LogMessage(X_WARNING,
-                   "Device '%s' has %d axes, only using first %d.\n",
-                   dev->name, numAxes, MAX_VALUATORS);
-        numAxes = MAX_VALUATORS;
-    }
-
-    align = (union align_u *) calloc(1, sizeof(union align_u) +
-				     numAxes * sizeof(double) +
-				     numAxes * sizeof(AxisInfo));
-    if (!align)
-	return FALSE;
-
-    valc = &align->valc;
-    valc->sourceid = dev->id;
-    valc->motion = NULL;
-    valc->first_motion = 0;
-    valc->last_motion = 0;
-
-    valc->numMotionEvents = numMotionEvents;
-    valc->motionHintWindow = NullWindow;
-    valc->numAxes = numAxes;
-    valc->axisVal = (double *)(align + 1);
-    valc->axes = (AxisInfoPtr)(valc->axisVal + numAxes);
-
-    if (mode & OutOfProximity)
-        InitProximityClassDeviceStruct(dev);
-
-    dev->valuator = valc;
-
-    AllocateMotionHistory(dev);
-
-    for (i=0; i<numAxes; i++) {
-        InitValuatorAxisStruct(dev, i, labels[i], NO_AXIS_LIMITS, NO_AXIS_LIMITS,
-                               0, 0, 0, mode);
-	valc->axisVal[i]=0;
-    }
-
-    dev->last.numValuators = numAxes;
-
-    if (IsMaster(dev) || /* do not accelerate master or xtest devices */
-        IsXTestDevice(dev, NULL))
-	InitPointerAccelerationScheme(dev, PtrAccelNoOp);
-    else
-	InitPointerAccelerationScheme(dev, PtrAccelDefault);
-    return TRUE;
-}
-
-/* global list of acceleration schemes */
-ValuatorAccelerationRec pointerAccelerationScheme[] = {
-    {PtrAccelNoOp, NULL, NULL, NULL, NULL},
-    {PtrAccelPredictable, acceleratePointerPredictable, NULL,
-        InitPredictableAccelerationScheme, AccelerationDefaultCleanup},
-    {PtrAccelLightweight, acceleratePointerLightweight, NULL, NULL, NULL},
-    {-1, NULL, NULL, NULL, NULL} /* terminator */
-};
-
-/**
- * install an acceleration scheme. returns TRUE on success, and should not
- * change anything if unsuccessful.
- */
-Bool
-InitPointerAccelerationScheme(DeviceIntPtr dev,
-                              int scheme)
-{
-    int x, i = -1;
-    ValuatorClassPtr val;
-
-    val = dev->valuator;
-
-    if (!val)
-        return FALSE;
-
-    if (IsMaster(dev) && scheme != PtrAccelNoOp)
-        return FALSE;
-
-    for (x = 0; pointerAccelerationScheme[x].number >= 0; x++) {
-        if(pointerAccelerationScheme[x].number == scheme){
-            i = x;
-            break;
-        }
-    }
-
-    if (-1 == i)
-        return FALSE;
-
-    if (val->accelScheme.AccelCleanupProc)
-        val->accelScheme.AccelCleanupProc(dev);
-
-    if (pointerAccelerationScheme[i].AccelInitProc) {
-        if (!pointerAccelerationScheme[i].AccelInitProc(dev,
-                                            &pointerAccelerationScheme[i])) {
-            return FALSE;
-        }
-    } else {
-        val->accelScheme = pointerAccelerationScheme[i];
-    }
-    return TRUE;
-}
-
-Bool
-InitAbsoluteClassDeviceStruct(DeviceIntPtr dev)
-{
-    AbsoluteClassPtr abs;
-
-    abs = malloc(sizeof(AbsoluteClassRec));
-    if (!abs)
-        return FALSE;
-
-    /* we don't do anything sensible with these, but should */
-    abs->min_x = NO_AXIS_LIMITS;
-    abs->min_y = NO_AXIS_LIMITS;
-    abs->max_x = NO_AXIS_LIMITS;
-    abs->max_y = NO_AXIS_LIMITS;
-    abs->flip_x = 0;
-    abs->flip_y = 0;
-    abs->rotation = 0;
-    abs->button_threshold = 0;
-
-    abs->offset_x = 0;
-    abs->offset_y = 0;
-    abs->width = NO_AXIS_LIMITS;
-    abs->height = NO_AXIS_LIMITS;
-    abs->following = 0;
-    abs->screen = 0;
-
-    abs->sourceid = dev->id;
-
-    dev->absolute = abs;
-
-    return TRUE;
-}
-
-Bool
-InitFocusClassDeviceStruct(DeviceIntPtr dev)
-{
-    FocusClassPtr focc;
-
-    focc = malloc(sizeof(FocusClassRec));
-    if (!focc)
-	return FALSE;
-    focc->win = PointerRootWin;
-    focc->revert = None;
-    focc->time = currentTime;
-    focc->trace = (WindowPtr *)NULL;
-    focc->traceSize = 0;
-    focc->traceGood = 0;
-    focc->sourceid = dev->id;
-    dev->focus = focc;
-    return TRUE;
-}
-
-Bool
-InitPtrFeedbackClassDeviceStruct(DeviceIntPtr dev, PtrCtrlProcPtr controlProc)
-{
-    PtrFeedbackPtr feedc;
-
-    feedc = malloc(sizeof(PtrFeedbackClassRec));
-    if (!feedc)
-	return FALSE;
-    feedc->CtrlProc = controlProc;
-    feedc->ctrl = defaultPointerControl;
-    feedc->ctrl.id = 0;
-    if ( (feedc->next = dev->ptrfeed) )
-        feedc->ctrl.id = dev->ptrfeed->ctrl.id + 1;
-    dev->ptrfeed = feedc;
-    (*controlProc)(dev, &feedc->ctrl);
-    return TRUE;
-}
-
-
-static LedCtrl defaultLedControl = {
-	DEFAULT_LEDS, DEFAULT_LEDS_MASK, 0};
-
-static BellCtrl defaultBellControl = {
-	DEFAULT_BELL,
-	DEFAULT_BELL_PITCH,
-	DEFAULT_BELL_DURATION,
-	0};
-
-static IntegerCtrl defaultIntegerControl = {
-	DEFAULT_INT_RESOLUTION,
-	DEFAULT_INT_MIN_VALUE,
-	DEFAULT_INT_MAX_VALUE,
-	DEFAULT_INT_DISPLAYED,
-	0};
-
-Bool
-InitStringFeedbackClassDeviceStruct (
-      DeviceIntPtr dev, StringCtrlProcPtr controlProc,
-      int max_symbols, int num_symbols_supported, KeySym *symbols)
-{
-    int i;
-    StringFeedbackPtr feedc;
-
-    feedc = malloc(sizeof(StringFeedbackClassRec));
-    if (!feedc)
-	return FALSE;
-    feedc->CtrlProc = controlProc;
-    feedc->ctrl.num_symbols_supported = num_symbols_supported;
-    feedc->ctrl.num_symbols_displayed = 0;
-    feedc->ctrl.max_symbols = max_symbols;
-    feedc->ctrl.symbols_supported = malloc(sizeof (KeySym) * num_symbols_supported);
-    feedc->ctrl.symbols_displayed = malloc(sizeof (KeySym) * max_symbols);
-    if (!feedc->ctrl.symbols_supported || !feedc->ctrl.symbols_displayed)
-    {
-	free(feedc->ctrl.symbols_supported);
-	free(feedc->ctrl.symbols_displayed);
-	free(feedc);
-	return FALSE;
-    }
-    for (i=0; i<num_symbols_supported; i++)
-	*(feedc->ctrl.symbols_supported+i) = *symbols++;
-    for (i=0; i<max_symbols; i++)
-	*(feedc->ctrl.symbols_displayed+i) = (KeySym) 0;
-    feedc->ctrl.id = 0;
-    if ( (feedc->next = dev->stringfeed) )
-	feedc->ctrl.id = dev->stringfeed->ctrl.id + 1;
-    dev->stringfeed = feedc;
-    (*controlProc)(dev, &feedc->ctrl);
-    return TRUE;
-}
-
-Bool
-InitBellFeedbackClassDeviceStruct (DeviceIntPtr dev, BellProcPtr bellProc,
-                                   BellCtrlProcPtr controlProc)
-{
-    BellFeedbackPtr feedc;
-
-    feedc = malloc(sizeof(BellFeedbackClassRec));
-    if (!feedc)
-	return FALSE;
-    feedc->CtrlProc = controlProc;
-    feedc->BellProc = bellProc;
-    feedc->ctrl = defaultBellControl;
-    feedc->ctrl.id = 0;
-    if ( (feedc->next = dev->bell) )
-	feedc->ctrl.id = dev->bell->ctrl.id + 1;
-    dev->bell = feedc;
-    (*controlProc)(dev, &feedc->ctrl);
-    return TRUE;
-}
-
-Bool
-InitLedFeedbackClassDeviceStruct (DeviceIntPtr dev, LedCtrlProcPtr controlProc)
-{
-    LedFeedbackPtr feedc;
-
-    feedc = malloc(sizeof(LedFeedbackClassRec));
-    if (!feedc)
-	return FALSE;
-    feedc->CtrlProc = controlProc;
-    feedc->ctrl = defaultLedControl;
-    feedc->ctrl.id = 0;
-    if ( (feedc->next = dev->leds) )
-	feedc->ctrl.id = dev->leds->ctrl.id + 1;
-    feedc->xkb_sli= NULL;
-    dev->leds = feedc;
-    (*controlProc)(dev, &feedc->ctrl);
-    return TRUE;
-}
-
-Bool
-InitIntegerFeedbackClassDeviceStruct (DeviceIntPtr dev, IntegerCtrlProcPtr controlProc)
-{
-    IntegerFeedbackPtr feedc;
-
-    feedc = malloc(sizeof(IntegerFeedbackClassRec));
-    if (!feedc)
-	return FALSE;
-    feedc->CtrlProc = controlProc;
-    feedc->ctrl = defaultIntegerControl;
-    feedc->ctrl.id = 0;
-    if ( (feedc->next = dev->intfeed) )
-	feedc->ctrl.id = dev->intfeed->ctrl.id + 1;
-    dev->intfeed = feedc;
-    (*controlProc)(dev, &feedc->ctrl);
-    return TRUE;
-}
-
-Bool
-InitPointerDeviceStruct(DevicePtr device, CARD8 *map, int numButtons, Atom* btn_labels,
-                        PtrCtrlProcPtr controlProc, int numMotionEvents,
-                        int numAxes, Atom *axes_labels)
-{
-    DeviceIntPtr dev = (DeviceIntPtr)device;
-
-    return(InitButtonClassDeviceStruct(dev, numButtons, btn_labels, map) &&
-	   InitValuatorClassDeviceStruct(dev, numAxes, axes_labels,
-					 numMotionEvents, Relative) &&
-	   InitPtrFeedbackClassDeviceStruct(dev, controlProc));
-}
-
-/*
- * Check if the given buffer contains elements between low (inclusive) and
- * high (inclusive) only.
- *
- * @return TRUE if the device map is invalid, FALSE otherwise.
- */
-Bool
-BadDeviceMap(BYTE *buff, int length, unsigned low, unsigned high, XID *errval)
-{
-    int i;
-
-    for (i = 0; i < length; i++)
-	if (buff[i])		       /* only check non-zero elements */
-	{
-	    if ((low > buff[i]) || (high < buff[i]))
-	    {
-		*errval = buff[i];
-		return TRUE;
-	    }
-	}
-    return FALSE;
-}
-
-int
-ProcSetModifierMapping(ClientPtr client)
-{
-    xSetModifierMappingReply rep;
-    int rc;
-    REQUEST(xSetModifierMappingReq);
-    REQUEST_AT_LEAST_SIZE(xSetModifierMappingReq);
-
-    if (client->req_len != ((stuff->numKeyPerModifier << 1) +
-                bytes_to_int32(sizeof(xSetModifierMappingReq))))
-	return BadLength;
-
-    rep.type = X_Reply;
-    rep.length = 0;
-    rep.sequenceNumber = client->sequence;
-
-    rc = change_modmap(client, PickKeyboard(client), (KeyCode *)&stuff[1],
-                       stuff->numKeyPerModifier);
-    if (rc == MappingFailed || rc == -1)
-        return BadValue;
-    if (rc != Success && rc != MappingSuccess && rc != MappingFailed &&
-        rc != MappingBusy)
-	return rc;
-
-    rep.success = rc;
-
-    WriteReplyToClient(client, sizeof(xSetModifierMappingReply), &rep);
-    return Success;
-}
-
-int
-ProcGetModifierMapping(ClientPtr client)
-{
-    xGetModifierMappingReply rep;
-    int max_keys_per_mod = 0;
-    KeyCode *modkeymap = NULL;
-    REQUEST_SIZE_MATCH(xReq);
-
-    generate_modkeymap(client, PickKeyboard(client), &modkeymap,
-                       &max_keys_per_mod);
-
-    memset(&rep, 0, sizeof(xGetModifierMappingReply));
-    rep.type = X_Reply;
-    rep.numKeyPerModifier = max_keys_per_mod;
-    rep.sequenceNumber = client->sequence;
-    /* length counts 4 byte quantities - there are 8 modifiers 1 byte big */
-    rep.length = max_keys_per_mod << 1;
-
-    WriteReplyToClient(client, sizeof(xGetModifierMappingReply), &rep);
-    (void)WriteToClient(client, max_keys_per_mod * 8, (char *) modkeymap);
-
-    free(modkeymap);
-
-    return Success;
-}
-
-int
-ProcChangeKeyboardMapping(ClientPtr client)
-{
-    REQUEST(xChangeKeyboardMappingReq);
-    unsigned len;
-    KeySymsRec keysyms;
-    DeviceIntPtr pDev, tmp;
-    int rc;
-    REQUEST_AT_LEAST_SIZE(xChangeKeyboardMappingReq);
-
-    len = client->req_len - bytes_to_int32(sizeof(xChangeKeyboardMappingReq));
-    if (len != (stuff->keyCodes * stuff->keySymsPerKeyCode))
-            return BadLength;
-
-    pDev = PickKeyboard(client);
-
-    if ((stuff->firstKeyCode < pDev->key->xkbInfo->desc->min_key_code) ||
-	(stuff->firstKeyCode > pDev->key->xkbInfo->desc->max_key_code)) {
-	    client->errorValue = stuff->firstKeyCode;
-	    return BadValue;
-
-    }
-    if (((unsigned)(stuff->firstKeyCode + stuff->keyCodes - 1) >
-          pDev->key->xkbInfo->desc->max_key_code) ||
-        (stuff->keySymsPerKeyCode == 0)) {
-	    client->errorValue = stuff->keySymsPerKeyCode;
-	    return BadValue;
-    }
-
-    keysyms.minKeyCode = stuff->firstKeyCode;
-    keysyms.maxKeyCode = stuff->firstKeyCode + stuff->keyCodes - 1;
-    keysyms.mapWidth = stuff->keySymsPerKeyCode;
-    keysyms.map = (KeySym *) &stuff[1];
-
-    rc = XaceHook(XACE_DEVICE_ACCESS, client, pDev, DixManageAccess);
-    if (rc != Success)
-        return rc;
-
-    XkbApplyMappingChange(pDev, &keysyms, stuff->firstKeyCode,
-                          stuff->keyCodes, NULL, client);
-
-    for (tmp = inputInfo.devices; tmp; tmp = tmp->next) {
-        if (IsMaster(tmp) || GetMaster(tmp, MASTER_KEYBOARD) != pDev)
-            continue;
-        if (!tmp->key)
-            continue;
-
-        rc = XaceHook(XACE_DEVICE_ACCESS, client, pDev, DixManageAccess);
-        if (rc != Success)
-            continue;
-
-        XkbApplyMappingChange(tmp, &keysyms, stuff->firstKeyCode,
-                              stuff->keyCodes, NULL, client);
-    }
-
-    return Success;
-}
-
-int
-ProcSetPointerMapping(ClientPtr client)
-{
-    BYTE *map;
-    int ret;
-    int i, j;
-    DeviceIntPtr ptr = PickPointer(client);
-    xSetPointerMappingReply rep;
-    REQUEST(xSetPointerMappingReq);
-    REQUEST_AT_LEAST_SIZE(xSetPointerMappingReq);
-
-    if (client->req_len !=
-            bytes_to_int32(sizeof(xSetPointerMappingReq) + stuff->nElts))
-	return BadLength;
-    rep.type = X_Reply;
-    rep.length = 0;
-    rep.sequenceNumber = client->sequence;
-    rep.success = MappingSuccess;
-    map = (BYTE *)&stuff[1];
-
-    /* So we're bounded here by the number of core buttons.  This check
-     * probably wants disabling through XFixes. */
-    /* MPX: With ClientPointer, we can return the right number of buttons.
-     * Let's just hope nobody changed ClientPointer between GetPointerMapping
-     * and SetPointerMapping
-     */
-    if (stuff->nElts != ptr->button->numButtons) {
-	client->errorValue = stuff->nElts;
-	return BadValue;
-    }
-
-    /* Core protocol specs don't allow for duplicate mappings; this check
-     * almost certainly wants disabling through XFixes too. */
-    for (i = 0; i < stuff->nElts; i++) {
-        for (j = i + 1; j < stuff->nElts; j++) {
-            if (map[i] && map[i] == map[j]) {
-                client->errorValue = map[i];
-                return BadValue;
-            }
-        }
-    }
-
-    ret = ApplyPointerMapping(ptr, map, stuff->nElts, client);
-    if (ret == MappingBusy)
-        rep.success = ret;
-    else if (ret == -1)
-        return BadValue;
-    else if (ret != Success)
-        return ret;
-
-    WriteReplyToClient(client, sizeof(xSetPointerMappingReply), &rep);
-    return Success;
-}
-
-int
-ProcGetKeyboardMapping(ClientPtr client)
-{
-    xGetKeyboardMappingReply rep;
-    DeviceIntPtr kbd = PickKeyboard(client);
-    XkbDescPtr xkb;
-    KeySymsPtr syms;
-    int rc;
-    REQUEST(xGetKeyboardMappingReq);
-    REQUEST_SIZE_MATCH(xGetKeyboardMappingReq);
-
-    rc = XaceHook(XACE_DEVICE_ACCESS, client, kbd, DixGetAttrAccess);
-    if (rc != Success)
-	return rc;
-
-    xkb = kbd->key->xkbInfo->desc;
-
-    if ((stuff->firstKeyCode < xkb->min_key_code) ||
-        (stuff->firstKeyCode > xkb->max_key_code)) {
-	client->errorValue = stuff->firstKeyCode;
-	return BadValue;
-    }
-    if (stuff->firstKeyCode + stuff->count > xkb->max_key_code + 1) {
-	client->errorValue = stuff->count;
-        return BadValue;
-    }
-
-    syms = XkbGetCoreMap(kbd);
-    if (!syms)
-        return BadAlloc;
-
-    memset(&rep, 0, sizeof(xGetKeyboardMappingReply));
-    rep.type = X_Reply;
-    rep.sequenceNumber = client->sequence;
-    rep.keySymsPerKeyCode = syms->mapWidth;
-    /* length is a count of 4 byte quantities and KeySyms are 4 bytes */
-    rep.length = syms->mapWidth * stuff->count;
-    WriteReplyToClient(client, sizeof(xGetKeyboardMappingReply), &rep);
-    client->pSwapReplyFunc = (ReplySwapPtr) CopySwap32Write;
-    WriteSwappedDataToClient(client,
-                             syms->mapWidth * stuff->count * sizeof(KeySym),
-                             &syms->map[syms->mapWidth * (stuff->firstKeyCode -
-                                                          syms->minKeyCode)]);
-    free(syms->map);
-    free(syms);
-
-    return Success;
-}
-
-int
-ProcGetPointerMapping(ClientPtr client)
-{
-    xGetPointerMappingReply rep;
-    /* Apps may get different values each time they call GetPointerMapping as
-     * the ClientPointer could change. */
-    DeviceIntPtr ptr = PickPointer(client);
-    ButtonClassPtr butc = ptr->button;
-    int rc;
-    REQUEST_SIZE_MATCH(xReq);
-
-    rc = XaceHook(XACE_DEVICE_ACCESS, client, ptr, DixGetAttrAccess);
-    if (rc != Success)
-	return rc;
-
-    rep.type = X_Reply;
-    rep.sequenceNumber = client->sequence;
-    rep.nElts = (butc) ? butc->numButtons : 0;
-    rep.length = ((unsigned)rep.nElts + (4-1))/4;
-    WriteReplyToClient(client, sizeof(xGetPointerMappingReply), &rep);
-    if (butc)
-        WriteToClient(client, (int)rep.nElts, (char *)&butc->map[1]);
-    return Success;
-}
-
-void
-NoteLedState(DeviceIntPtr keybd, int led, Bool on)
-{
-    KeybdCtrl *ctrl = &keybd->kbdfeed->ctrl;
-    if (on)
-	ctrl->leds |= ((Leds)1 << (led - 1));
-    else
-	ctrl->leds &= ~((Leds)1 << (led - 1));
-}
-
-int
-Ones(unsigned long mask)             /* HACKMEM 169 */
-{
-    unsigned long y;
-
-    y = (mask >> 1) &033333333333;
-    y = mask - y - ((y >>1) & 033333333333);
-    return (((y + (y >> 3)) & 030707070707) % 077);
-}
-
-static int
-DoChangeKeyboardControl (ClientPtr client, DeviceIntPtr keybd, XID *vlist,
-                         BITS32 vmask)
-{
-#define DO_ALL    (-1)
-    KeybdCtrl ctrl;
-    int t;
-    int led = DO_ALL;
-    int key = DO_ALL;
-    BITS32 index2;
-    int mask = vmask, i;
-    XkbEventCauseRec cause;
-
-    ctrl = keybd->kbdfeed->ctrl;
-    while (vmask) {
-	index2 = (BITS32) lowbit (vmask);
-	vmask &= ~index2;
-	switch (index2) {
-	case KBKeyClickPercent:
-	    t = (INT8)*vlist;
-	    vlist++;
-	    if (t == -1) {
-		t = defaultKeyboardControl.click;
-            }
-	    else if (t < 0 || t > 100) {
-		client->errorValue = t;
-		return BadValue;
-	    }
-	    ctrl.click = t;
-	    break;
-	case KBBellPercent:
-	    t = (INT8)*vlist;
-	    vlist++;
-	    if (t == -1) {
-		t = defaultKeyboardControl.bell;
-            }
-	    else if (t < 0 || t > 100) {
-		client->errorValue = t;
-		return BadValue;
-	    }
-	    ctrl.bell = t;
-	    break;
-	case KBBellPitch:
-	    t = (INT16)*vlist;
-	    vlist++;
-	    if (t == -1) {
-		t = defaultKeyboardControl.bell_pitch;
-            }
-	    else if (t < 0) {
-		client->errorValue = t;
-		return BadValue;
-	    }
-	    ctrl.bell_pitch = t;
-	    break;
-	case KBBellDuration:
-	    t = (INT16)*vlist;
-	    vlist++;
-	    if (t == -1)
-		t = defaultKeyboardControl.bell_duration;
-	    else if (t < 0) {
-		client->errorValue = t;
-		return BadValue;
-	    }
-	    ctrl.bell_duration = t;
-	    break;
-	case KBLed:
-	    led = (CARD8)*vlist;
-	    vlist++;
-	    if (led < 1 || led > 32) {
-		client->errorValue = led;
-		return BadValue;
-	    }
-	    if (!(mask & KBLedMode))
-		return BadMatch;
-	    break;
-	case KBLedMode:
-	    t = (CARD8)*vlist;
-	    vlist++;
-	    if (t == LedModeOff) {
-		if (led == DO_ALL)
-		    ctrl.leds = 0x0;
-		else
-		    ctrl.leds &= ~(((Leds)(1)) << (led - 1));
-	    }
-	    else if (t == LedModeOn) {
-		if (led == DO_ALL)
-		    ctrl.leds = ~0L;
-		else
-		    ctrl.leds |= (((Leds)(1)) << (led - 1));
-	    }
-	    else {
-		client->errorValue = t;
-		return BadValue;
-	    }
-
-            XkbSetCauseCoreReq(&cause,X_ChangeKeyboardControl,client);
-            XkbSetIndicators(keybd,((led == DO_ALL) ? ~0L : (1L<<(led-1))),
- 			     ctrl.leds, &cause);
-            ctrl.leds = keybd->kbdfeed->ctrl.leds;
-
-	    break;
-	case KBKey:
-	    key = (KeyCode)*vlist;
-	    vlist++;
-	    if ((KeyCode)key < keybd->key->xkbInfo->desc->min_key_code ||
-		(KeyCode)key > keybd->key->xkbInfo->desc->max_key_code) {
-		client->errorValue = key;
-		return BadValue;
-	    }
-	    if (!(mask & KBAutoRepeatMode))
-		return BadMatch;
-	    break;
-	case KBAutoRepeatMode:
-	    i = (key >> 3);
-	    mask = (1 << (key & 7));
-	    t = (CARD8)*vlist;
-	    vlist++;
-            if (key != DO_ALL)
-                XkbDisableComputedAutoRepeats(keybd,key);
-	    if (t == AutoRepeatModeOff) {
-		if (key == DO_ALL)
-		    ctrl.autoRepeat = FALSE;
-		else
-		    ctrl.autoRepeats[i] &= ~mask;
-	    }
-	    else if (t == AutoRepeatModeOn) {
-		if (key == DO_ALL)
-		    ctrl.autoRepeat = TRUE;
-		else
-		    ctrl.autoRepeats[i] |= mask;
-	    }
-	    else if (t == AutoRepeatModeDefault) {
-		if (key == DO_ALL)
-		    ctrl.autoRepeat = defaultKeyboardControl.autoRepeat;
-		else
-		    ctrl.autoRepeats[i] =
-			    (ctrl.autoRepeats[i] & ~mask) |
-			    (defaultKeyboardControl.autoRepeats[i] & mask);
-	    }
-	    else {
-		client->errorValue = t;
-		return BadValue;
-	    }
-	    break;
-	default:
-	    client->errorValue = mask;
-	    return BadValue;
-	}
-    }
-    keybd->kbdfeed->ctrl = ctrl;
-
-    /* The XKB RepeatKeys control and core protocol global autorepeat */
-    /* value are linked	*/
-    XkbSetRepeatKeys(keybd, key, keybd->kbdfeed->ctrl.autoRepeat);
-
-    return Success;
-
-#undef DO_ALL
-}
-
-/**
- * Changes kbd control on the ClientPointer and all attached SDs.
- */
-int
-ProcChangeKeyboardControl (ClientPtr client)
-{
-    XID *vlist;
-    BITS32 vmask;
-    int ret = Success, error = Success;
-    DeviceIntPtr pDev = NULL, keyboard;
-    REQUEST(xChangeKeyboardControlReq);
-
-    REQUEST_AT_LEAST_SIZE(xChangeKeyboardControlReq);
-
-    vmask = stuff->mask;
-    vlist = (XID *)&stuff[1];
-
-    if (client->req_len != (sizeof(xChangeKeyboardControlReq)>>2)+Ones(vmask))
-	return BadLength;
-
-    keyboard = PickKeyboard(client);
-
-    for (pDev = inputInfo.devices; pDev; pDev = pDev->next) {
-        if ((pDev == keyboard ||
-	     (!IsMaster(pDev) && GetMaster(pDev, MASTER_KEYBOARD) == keyboard))
-	    && pDev->kbdfeed && pDev->kbdfeed->CtrlProc) {
-            ret = XaceHook(XACE_DEVICE_ACCESS, client, pDev, DixManageAccess);
-	    if (ret != Success)
-                return ret;
-        }
-    }
-
-    for (pDev = inputInfo.devices; pDev; pDev = pDev->next) {
-        if ((pDev == keyboard ||
-	     (!IsMaster(pDev) && GetMaster(pDev, MASTER_KEYBOARD) == keyboard))
-	    && pDev->kbdfeed && pDev->kbdfeed->CtrlProc) {
-            ret = DoChangeKeyboardControl(client, pDev, vlist, vmask);
-            if (ret != Success)
-                error = ret;
-        }
-    }
-
-    return error;
-}
-
-int
-ProcGetKeyboardControl (ClientPtr client)
-{
-    int rc, i;
-    DeviceIntPtr kbd = PickKeyboard(client);
-    KeybdCtrl *ctrl = &kbd->kbdfeed->ctrl;
-    xGetKeyboardControlReply rep;
-    REQUEST_SIZE_MATCH(xReq);
-
-    rc = XaceHook(XACE_DEVICE_ACCESS, client, kbd, DixGetAttrAccess);
-    if (rc != Success)
-	return rc;
-
-    rep.type = X_Reply;
-    rep.length = 5;
-    rep.sequenceNumber = client->sequence;
-    rep.globalAutoRepeat = ctrl->autoRepeat;
-    rep.keyClickPercent = ctrl->click;
-    rep.bellPercent = ctrl->bell;
-    rep.bellPitch = ctrl->bell_pitch;
-    rep.bellDuration = ctrl->bell_duration;
-    rep.ledMask = ctrl->leds;
-    for (i = 0; i < 32; i++)
-	rep.map[i] = ctrl->autoRepeats[i];
-    WriteReplyToClient(client, sizeof(xGetKeyboardControlReply), &rep);
-    return Success;
-}
-
-int
-ProcBell(ClientPtr client)
-{
-    DeviceIntPtr dev, keybd = PickKeyboard(client);
-    int base = keybd->kbdfeed->ctrl.bell;
-    int newpercent;
-    int rc;
-    REQUEST(xBellReq);
-    REQUEST_SIZE_MATCH(xBellReq);
-
-    if (stuff->percent < -100 || stuff->percent > 100) {
-	client->errorValue = stuff->percent;
-	return BadValue;
-    }
-
-    newpercent = (base * stuff->percent) / 100;
-    if (stuff->percent < 0)
-        newpercent = base + newpercent;
-    else
-	newpercent = base - newpercent + stuff->percent;
-
-    for (dev = inputInfo.devices; dev; dev = dev->next) {
-        if ((dev == keybd ||
-	     (!IsMaster(dev) && GetMaster(dev, MASTER_KEYBOARD) == keybd)) &&
-            dev->kbdfeed && dev->kbdfeed->BellProc) {
-
-	    rc = XaceHook(XACE_DEVICE_ACCESS, client, dev, DixBellAccess);
-	    if (rc != Success)
-		return rc;
-            XkbHandleBell(FALSE, FALSE, dev, newpercent,
-                          &dev->kbdfeed->ctrl, 0, None, NULL, client);
-        }
-    }
-
-    return Success;
-}
-
-int
-ProcChangePointerControl(ClientPtr client)
-{
-    DeviceIntPtr dev, mouse = PickPointer(client);
-    PtrCtrl ctrl;		/* might get BadValue part way through */
-    int rc;
-    REQUEST(xChangePointerControlReq);
-    REQUEST_SIZE_MATCH(xChangePointerControlReq);
-
-    ctrl = mouse->ptrfeed->ctrl;
-    if ((stuff->doAccel != xTrue) && (stuff->doAccel != xFalse)) {
-	client->errorValue = stuff->doAccel;
-	return BadValue;
-    }
-    if ((stuff->doThresh != xTrue) && (stuff->doThresh != xFalse)) {
-	client->errorValue = stuff->doThresh;
-	return BadValue;
-    }
-    if (stuff->doAccel) {
-	if (stuff->accelNum == -1) {
-	    ctrl.num = defaultPointerControl.num;
-        }
-	else if (stuff->accelNum < 0) {
-	    client->errorValue = stuff->accelNum;
-	    return BadValue;
-	}
-	else {
-            ctrl.num = stuff->accelNum;
-        }
-
-	if (stuff->accelDenum == -1) {
-	    ctrl.den = defaultPointerControl.den;
-        }
-	else if (stuff->accelDenum <= 0) {
-	    client->errorValue = stuff->accelDenum;
-	    return BadValue;
-	}
-	else {
-            ctrl.den = stuff->accelDenum;
-        }
-    }
-    if (stuff->doThresh) {
-	if (stuff->threshold == -1) {
-	    ctrl.threshold = defaultPointerControl.threshold;
-        }
-	else if (stuff->threshold < 0) {
-	    client->errorValue = stuff->threshold;
-	    return BadValue;
-	}
-	else {
-            ctrl.threshold = stuff->threshold;
-        }
-    }
-
-    for (dev = inputInfo.devices; dev; dev = dev->next) {
-        if ((dev == mouse ||
-	     (!IsMaster(dev) && GetMaster(dev, MASTER_POINTER) == mouse)) &&
-            dev->ptrfeed) {
-	    rc = XaceHook(XACE_DEVICE_ACCESS, client, dev, DixManageAccess);
-	    if (rc != Success)
-		return rc;
-	}
-    }
-
-    for (dev = inputInfo.devices; dev; dev = dev->next) {
-        if ((dev == mouse ||
-	     (!IsMaster(dev) && GetMaster(dev, MASTER_POINTER) == mouse)) &&
-            dev->ptrfeed) {
-            dev->ptrfeed->ctrl = ctrl;
-        }
-    }
-
-    return Success;
-}
-
-int
-ProcGetPointerControl(ClientPtr client)
-{
-    DeviceIntPtr ptr = PickPointer(client);
-    PtrCtrl *ctrl = &ptr->ptrfeed->ctrl;
-    xGetPointerControlReply rep;
-    int rc;
-    REQUEST_SIZE_MATCH(xReq);
-
-    rc = XaceHook(XACE_DEVICE_ACCESS, client, ptr, DixGetAttrAccess);
-    if (rc != Success)
-	return rc;
-
-    rep.type = X_Reply;
-    rep.length = 0;
-    rep.sequenceNumber = client->sequence;
-    rep.threshold = ctrl->threshold;
-    rep.accelNumerator = ctrl->num;
-    rep.accelDenominator = ctrl->den;
-    WriteReplyToClient(client, sizeof(xGenericReply), &rep);
-    return Success;
-}
-
-void
-MaybeStopHint(DeviceIntPtr dev, ClientPtr client)
-{
-    GrabPtr grab = dev->deviceGrab.grab;
-
-    if ((grab && SameClient(grab, client) &&
-	 ((grab->eventMask & PointerMotionHintMask) ||
-	  (grab->ownerEvents &&
-	   (EventMaskForClient(dev->valuator->motionHintWindow, client) &
-	    PointerMotionHintMask)))) ||
-	(!grab &&
-	 (EventMaskForClient(dev->valuator->motionHintWindow, client) &
-	  PointerMotionHintMask)))
-	dev->valuator->motionHintWindow = NullWindow;
-}
-
-int
-ProcGetMotionEvents(ClientPtr client)
-{
-    WindowPtr pWin;
-    xTimecoord * coords = (xTimecoord *) NULL;
-    xGetMotionEventsReply rep;
-    int i, count, xmin, xmax, ymin, ymax, rc;
-    unsigned long nEvents;
-    DeviceIntPtr mouse = PickPointer(client);
-    TimeStamp start, stop;
-    REQUEST(xGetMotionEventsReq);
-    REQUEST_SIZE_MATCH(xGetMotionEventsReq);
-
-    rc = dixLookupWindow(&pWin, stuff->window, client, DixGetAttrAccess);
-    if (rc != Success)
-	return rc;
-    rc = XaceHook(XACE_DEVICE_ACCESS, client, mouse, DixReadAccess);
-    if (rc != Success)
-	return rc;
-
-    if (mouse->valuator->motionHintWindow)
-	MaybeStopHint(mouse, client);
-    rep.type = X_Reply;
-    rep.sequenceNumber = client->sequence;
-    nEvents = 0;
-    start = ClientTimeToServerTime(stuff->start);
-    stop = ClientTimeToServerTime(stuff->stop);
-    if ((CompareTimeStamps(start, stop) != LATER) &&
-	(CompareTimeStamps(start, currentTime) != LATER) &&
-	mouse->valuator->numMotionEvents)
-    {
-	if (CompareTimeStamps(stop, currentTime) == LATER)
-	    stop = currentTime;
-	count = GetMotionHistory(mouse, &coords, start.milliseconds,
-				 stop.milliseconds, pWin->drawable.pScreen,
-                                 TRUE);
-	xmin = pWin->drawable.x - wBorderWidth (pWin);
-	xmax = pWin->drawable.x + (int)pWin->drawable.width +
-		wBorderWidth (pWin);
-	ymin = pWin->drawable.y - wBorderWidth (pWin);
-	ymax = pWin->drawable.y + (int)pWin->drawable.height +
-		wBorderWidth (pWin);
-	for (i = 0; i < count; i++)
-	    if ((xmin <= coords[i].x) && (coords[i].x < xmax) &&
-		    (ymin <= coords[i].y) && (coords[i].y < ymax))
-	    {
-		coords[nEvents].time = coords[i].time;
-		coords[nEvents].x = coords[i].x - pWin->drawable.x;
-		coords[nEvents].y = coords[i].y - pWin->drawable.y;
-		nEvents++;
-	    }
-    }
-    rep.length = nEvents * bytes_to_int32(sizeof(xTimecoord));
-    rep.nEvents = nEvents;
-    WriteReplyToClient(client, sizeof(xGetMotionEventsReply), &rep);
-    if (nEvents)
-    {
-	client->pSwapReplyFunc = (ReplySwapPtr) SwapTimeCoordWrite;
-	WriteSwappedDataToClient(client, nEvents * sizeof(xTimecoord),
-				 (char *)coords);
-    }
-    free(coords);
-    return Success;
-}
-
-int
-ProcQueryKeymap(ClientPtr client)
-{
-    xQueryKeymapReply rep;
-    int rc, i;
-    DeviceIntPtr keybd = PickKeyboard(client);
-    CARD8 *down = keybd->key->down;
-
-    REQUEST_SIZE_MATCH(xReq);
-    rep.type = X_Reply;
-    rep.sequenceNumber = client->sequence;
-    rep.length = 2;
-
-    rc = XaceHook(XACE_DEVICE_ACCESS, client, keybd, DixReadAccess);
-    if (rc != Success && rc != BadAccess)
-	return rc;
-
-    for (i = 0; i<32; i++)
-	rep.map[i] = down[i];
-
-    if (rc == BadAccess)
-	memset(rep.map, 0, 32);
-
-    WriteReplyToClient(client, sizeof(xQueryKeymapReply), &rep);
-
-   return Success;
-}
-
-
-/**
- * Recalculate the number of buttons for the master device. The number of
- * buttons on the master device is equal to the number of buttons on the
- * slave device with the highest number of buttons.
- */
-static void
-RecalculateMasterButtons(DeviceIntPtr slave)
-{
-    DeviceIntPtr dev, master;
-    int maxbuttons = 0;
-
-    if (!slave->button || IsMaster(slave))
-        return;
-
-    master = GetMaster(slave, MASTER_POINTER);
-    if (!master)
-        return;
-
-    for (dev = inputInfo.devices; dev; dev = dev->next)
-    {
-        if (IsMaster(dev) ||
-            GetMaster(dev, MASTER_ATTACHED) != master ||
-            !dev->button)
-            continue;
-
-        maxbuttons = max(maxbuttons, dev->button->numButtons);
-    }
-
-    if (master->button && master->button->numButtons != maxbuttons)
-    {
-        int i;
-        DeviceChangedEvent event;
-
-        memset(&event, 0, sizeof(event));
-
-        master->button->numButtons = maxbuttons;
-
-        event.header = ET_Internal;
-        event.type = ET_DeviceChanged;
-        event.time = GetTimeInMillis();
-        event.deviceid = master->id;
-        event.flags = DEVCHANGE_POINTER_EVENT | DEVCHANGE_DEVICE_CHANGE;
-        event.buttons.num_buttons = maxbuttons;
-        memcpy(&event.buttons.names, master->button->labels, maxbuttons *
-                sizeof(Atom));
-
-        if (master->valuator)
-        {
-            event.num_valuators = master->valuator->numAxes;
-            for (i = 0; i < event.num_valuators; i++)
-            {
-                event.valuators[i].min = master->valuator->axes[i].min_value;
-                event.valuators[i].max = master->valuator->axes[i].max_value;
-                event.valuators[i].resolution = master->valuator->axes[i].resolution;
-                event.valuators[i].mode = master->valuator->axes[i].mode;
-                event.valuators[i].name = master->valuator->axes[i].label;
-            }
-        }
-
-        if (master->key)
-        {
-            event.keys.min_keycode = master->key->xkbInfo->desc->min_key_code;
-            event.keys.max_keycode = master->key->xkbInfo->desc->max_key_code;
-        }
-
-        XISendDeviceChangedEvent(master, master, &event);
-    }
-}
-
-/**
- * Generate release events for all keys/button currently down on this
- * device.
- */
-static void
-ReleaseButtonsAndKeys(DeviceIntPtr dev)
-{
-    EventListPtr        eventlist = InitEventList(GetMaximumEventsNum());
-    ButtonClassPtr      b = dev->button;
-    KeyClassPtr         k = dev->key;
-    int                 i, j, nevents;
-
-    if (!eventlist) /* no release events for you */
-        return;
-
-    /* Release all buttons */
-    for (i = 0; b && i < b->numButtons; i++)
-    {
-        if (BitIsOn(b->down, i))
-        {
-            nevents = GetPointerEvents(eventlist, dev, ButtonRelease, i, 0, NULL);
-            for (j = 0; j < nevents; j++)
-                mieqProcessDeviceEvent(dev, (InternalEvent*)(eventlist+j)->event, NULL);
-        }
-    }
-
-    /* Release all keys */
-    for (i = 0; k && i < MAP_LENGTH; i++)
-    {
-        if (BitIsOn(k->down, i))
-        {
-            nevents = GetKeyboardEvents(eventlist, dev, KeyRelease, i);
-            for (j = 0; j < nevents; j++)
-                mieqProcessDeviceEvent(dev, (InternalEvent*)(eventlist+j)->event, NULL);
-        }
-    }
-
-    FreeEventList(eventlist, GetMaximumEventsNum());
-}
-
-/**
- * Attach device 'dev' to device 'master'.
- * Client is set to the client that issued the request, or NULL if it comes
- * from some internal automatic pairing.
- *
- * Master may be NULL to set the device floating.
- *
- * We don't allow multi-layer hierarchies right now. You can't attach a slave
- * to another slave.
- */
-int
-AttachDevice(ClientPtr client, DeviceIntPtr dev, DeviceIntPtr master)
-{
-    ScreenPtr screen;
-    DeviceIntPtr oldmaster;
-    if (!dev || IsMaster(dev))
-        return BadDevice;
-
-    if (master && !IsMaster(master)) /* can't attach to slaves */
-        return BadDevice;
-
-    /* set from floating to floating? */
-    if (IsFloating(dev) && !master && dev->enabled)
-        return Success;
-
-    /* free the existing sprite. */
-    if (IsFloating(dev) && dev->spriteInfo->paired == dev)
-    {
-        screen = miPointerGetScreen(dev);
-        screen->DeviceCursorCleanup(dev, screen);
-        free(dev->spriteInfo->sprite);
-    }
-
-    ReleaseButtonsAndKeys(dev);
-
-    oldmaster = GetMaster(dev, MASTER_ATTACHED);
-    dev->master = master;
-
-    /* If device is set to floating, we need to create a sprite for it,
-     * otherwise things go bad. However, we don't want to render the cursor,
-     * so we reset spriteOwner.
-     * Sprite has to be forced to NULL first, otherwise InitializeSprite won't
-     * alloc new memory but overwrite the previous one.
-     */
-    if (!master)
-    {
-        WindowPtr currentRoot;
-
-        if (dev->spriteInfo->sprite)
-            currentRoot = GetCurrentRootWindow(dev);
-        else /* new device auto-set to floating */
-            currentRoot = screenInfo.screens[0]->root;
-
-        /* we need to init a fake sprite */
-        screen = currentRoot->drawable.pScreen;
-        screen->DeviceCursorInitialize(dev, screen);
-        dev->spriteInfo->sprite = NULL;
-        InitializeSprite(dev, currentRoot);
-        dev->spriteInfo->spriteOwner = FALSE;
-        dev->spriteInfo->paired = dev;
-    } else
-    {
-        dev->spriteInfo->sprite = master->spriteInfo->sprite;
-        dev->spriteInfo->paired = master;
-        dev->spriteInfo->spriteOwner = FALSE;
-
-        RecalculateMasterButtons(master);
-    }
-
-    /* XXX: in theory, the MD should change back to its old, original
-     * classes when the last SD is detached. Thanks to the XTEST devices,
-     * we'll always have an SD attached until the MD is removed.
-     * So let's not worry about that.
-     */
-
-    return Success;
-}
-
-/**
- * Return the device paired with the given device or NULL.
- * Returns the device paired with the parent master if the given device is a
- * slave device.
- */
-DeviceIntPtr
-GetPairedDevice(DeviceIntPtr dev)
-{
-    if (!IsMaster(dev) && !IsFloating(dev))
-        dev = GetMaster(dev, MASTER_ATTACHED);
-
-    return dev->spriteInfo->paired;
-}
-
-
-/**
- * Returns the right master for the type of event needed. If the event is a
- * keyboard event.
- * This function may be called with a master device as argument. If so, the
- * returned master is either the device itself or the paired master device.
- * If dev is a floating slave device, NULL is returned.
- *
- * @type ::MASTER_KEYBOARD or ::MASTER_POINTER or ::MASTER_ATTACHED
- * @return The requested master device. In the case of MASTER_ATTACHED, this
- * is the directly attached master to this device, regardless of the type.
- * Otherwise, it is either the master keyboard or pointer for this device.
- */
-DeviceIntPtr
-GetMaster(DeviceIntPtr dev, int which)
-{
-    DeviceIntPtr master;
-
-    if (IsMaster(dev))
-        master = dev;
-    else
-        master = dev->master;
-
-    if (master && which != MASTER_ATTACHED)
-    {
-        if (which == MASTER_KEYBOARD)
-        {
-            if (master->type != MASTER_KEYBOARD)
-                master = GetPairedDevice(master);
-        } else
-        {
-            if (master->type != MASTER_POINTER)
-                master = GetPairedDevice(master);
-        }
-    }
-
-    return master;
-}
-
-/**
- * Create a new device pair (== one pointer, one keyboard device).
- * Only allocates the devices, you will need to call ActivateDevice() and
- * EnableDevice() manually.
- * Either a master or a slave device can be created depending on
- * the value for master.
- */
-int
-AllocDevicePair (ClientPtr client, char* name,
-                 DeviceIntPtr* ptr,
-                 DeviceIntPtr* keybd,
-                 DeviceProc ptr_proc,
-                 DeviceProc keybd_proc,
-                 Bool master)
-{
-    DeviceIntPtr pointer;
-    DeviceIntPtr keyboard;
-    *ptr = *keybd = NULL;
-
-    pointer = AddInputDevice(client, ptr_proc, TRUE);
-    if (!pointer)
-        return BadAlloc;
-
-    if (asprintf(&pointer->name, "%s pointer", name) == -1) {
-        pointer->name = NULL;
-        RemoveDevice(pointer, FALSE);
-        return BadAlloc;
-    }
-
-    pointer->public.processInputProc = ProcessOtherEvent;
-    pointer->public.realInputProc = ProcessOtherEvent;
-    XkbSetExtension(pointer, ProcessPointerEvent);
-    pointer->deviceGrab.ActivateGrab = ActivatePointerGrab;
-    pointer->deviceGrab.DeactivateGrab = DeactivatePointerGrab;
-    pointer->coreEvents = TRUE;
-    pointer->spriteInfo->spriteOwner = TRUE;
-
-    pointer->lastSlave = NULL;
-    pointer->last.slave = NULL;
-    pointer->type = (master) ? MASTER_POINTER : SLAVE;
-
-    keyboard = AddInputDevice(client, keybd_proc, TRUE);
-    if (!keyboard)
-    {
-        RemoveDevice(pointer, FALSE);
-        return BadAlloc;
-    }
-
-    if (asprintf(&keyboard->name, "%s keyboard", name) == -1) {
-        keyboard->name = NULL;
-        RemoveDevice(keyboard, FALSE);
-        RemoveDevice(pointer, FALSE);
-        return BadAlloc;
-    }
-
-    keyboard->public.processInputProc = ProcessOtherEvent;
-    keyboard->public.realInputProc = ProcessOtherEvent;
-    XkbSetExtension(keyboard, ProcessKeyboardEvent);
-    keyboard->deviceGrab.ActivateGrab = ActivateKeyboardGrab;
-    keyboard->deviceGrab.DeactivateGrab = DeactivateKeyboardGrab;
-    keyboard->coreEvents = TRUE;
-    keyboard->spriteInfo->spriteOwner = FALSE;
-
-    keyboard->lastSlave = NULL;
-    keyboard->last.slave = NULL;
-    keyboard->type = (master) ? MASTER_KEYBOARD : SLAVE;
-
-    /* The ClassesRec stores the device classes currently not used. */
-    pointer->unused_classes = calloc(1, sizeof(ClassesRec));
-    keyboard->unused_classes = calloc(1, sizeof(ClassesRec));
-
-    *ptr = pointer;
-    *keybd = keyboard;
-
-    return Success;
-}
-
-/**
- * Return Relative or Absolute for the device.
- */
-int valuator_get_mode(DeviceIntPtr dev, int axis)
-{
-    return (dev->valuator->axes[axis].mode & DeviceMode);
-}
-
-/**
- * Set the given mode for the axis. If axis is VALUATOR_MODE_ALL_AXES, then
- * set the mode for all axes.
- */
-void valuator_set_mode(DeviceIntPtr dev, int axis, int mode)
-{
-    if (axis != VALUATOR_MODE_ALL_AXES)
-        dev->valuator->axes[axis].mode = mode;
-    else {
-        int i;
-        for (i = 0; i < dev->valuator->numAxes; i++)
-            dev->valuator->axes[i].mode = mode;
-    }
-}
+/************************************************************

+

+Copyright 1987, 1998  The Open Group

+

+Permission to use, copy, modify, distribute, and sell this software and its

+documentation for any purpose is hereby granted without fee, provided that

+the above copyright notice appear in all copies and that both that

+copyright notice and this permission notice appear in supporting

+documentation.

+

+The above copyright notice and this permission notice shall be included in

+all copies or substantial portions of the Software.

+

+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE

+OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN

+AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN

+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

+

+Except as contained in this notice, the name of The Open Group shall not be

+used in advertising or otherwise to promote the sale, use or other dealings

+in this Software without prior written authorization from The Open Group.

+

+

+Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts.

+

+                        All Rights Reserved

+

+Permission to use, copy, modify, and distribute this software and its

+documentation for any purpose and without fee is hereby granted,

+provided that the above copyright notice appear in all copies and that

+both that copyright notice and this permission notice appear in

+supporting documentation, and that the name of Digital not be

+used in advertising or publicity pertaining to distribution of the

+software without specific, written prior permission.

+

+DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING

+ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL

+DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR

+ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,

+WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,

+ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS

+SOFTWARE.

+

+********************************************************/

+

+

+

+#ifdef HAVE_DIX_CONFIG_H

+#include <dix-config.h>

+#endif

+

+#include <X11/X.h>

+#include "misc.h"

+#include "resource.h"

+#include <X11/Xproto.h>

+#include <X11/Xatom.h>

+#include "windowstr.h"

+#include "inputstr.h"

+#include "scrnintstr.h"

+#include "cursorstr.h"

+#include "dixstruct.h"

+#include "ptrveloc.h"

+#include "site.h"

+#include "xkbsrv.h"

+#include "privates.h"

+#include "xace.h"

+#include "mi.h"

+

+#include "dispatch.h"

+#include "swaprep.h"

+#include "dixevents.h"

+#include "mipointer.h"

+#include "eventstr.h"

+

+#include <X11/extensions/XI.h>

+#include <X11/extensions/XI2.h>

+#include <X11/extensions/XIproto.h>

+#include <math.h>

+#include <pixman.h>

+#include "exglobals.h"

+#include "exevents.h"

+#include "xiquerydevice.h" /* for SizeDeviceClasses */

+#include "xiproperty.h"

+#include "enterleave.h" /* for EnterWindow() */

+#include "xserver-properties.h"

+#include "xichangehierarchy.h" /* For XISendDeviceHierarchyEvent */

+

+/** @file

+ * This file handles input device-related stuff.

+ */

+

+static void RecalculateMasterButtons(DeviceIntPtr slave);

+

+static void

+DeviceSetTransform(DeviceIntPtr dev, float *transform)

+{

+    struct pixman_f_transform scale;

+    double sx, sy;

+    int x, y;

+

+    /**

+     * calculate combined transformation matrix:

+     *

+     * M = InvScale * Transform * Scale

+     *

+     * So we can later transform points using M * p

+     *

+     * Where:

+     *  Scale scales coordinates into 0..1 range

+     *  Transform is the user supplied (affine) transform

+     *  InvScale scales coordinates back up into their native range

+     */

+    sx = dev->valuator->axes[0].max_value - dev->valuator->axes[0].min_value;

+    sy = dev->valuator->axes[1].max_value - dev->valuator->axes[1].min_value;

+

+    /* invscale */

+    pixman_f_transform_init_scale(&scale, sx, sy);

+    scale.m[0][2] = dev->valuator->axes[0].min_value;

+    scale.m[1][2] = dev->valuator->axes[1].min_value;

+

+    /* transform */

+    for (y=0; y<3; y++)

+        for (x=0; x<3; x++)

+            dev->transform.m[y][x] = *transform++;

+

+    pixman_f_transform_multiply(&dev->transform, &scale, &dev->transform);

+

+    /* scale */

+    pixman_f_transform_init_scale(&scale, 1.0 / sx, 1.0 / sy);

+    scale.m[0][2] = -dev->valuator->axes[0].min_value / sx;

+    scale.m[1][2] = -dev->valuator->axes[1].min_value / sy;

+

+    pixman_f_transform_multiply(&dev->transform, &dev->transform, &scale);

+}

+

+/**

+ * DIX property handler.

+ */

+static int

+DeviceSetProperty(DeviceIntPtr dev, Atom property, XIPropertyValuePtr prop,

+                  BOOL checkonly)

+{

+    if (property == XIGetKnownProperty(XI_PROP_ENABLED))

+    {

+        if (prop->format != 8 || prop->type != XA_INTEGER || prop->size != 1)

+            return BadValue;

+

+        /* Don't allow disabling of VCP/VCK */

+        if ((dev == inputInfo.pointer || dev == inputInfo.keyboard) &&

+            !(*(CARD8*)prop->data))

+            return BadAccess;

+

+        if (!checkonly)

+        {

+            if ((*((CARD8*)prop->data)) && !dev->enabled)

+                EnableDevice(dev, TRUE);

+            else if (!(*((CARD8*)prop->data)) && dev->enabled)

+                DisableDevice(dev, TRUE);

+        }

+    } else if (property == XIGetKnownProperty(XI_PROP_TRANSFORM))

+    {

+        float *f = (float*)prop->data;

+        int i;

+

+        if (prop->format != 32 || prop->size != 9 ||

+            prop->type != XIGetKnownProperty(XATOM_FLOAT))

+            return BadValue;

+

+        for (i=0; i<9; i++)

+            if (!isfinite(f[i]))

+                return BadValue;

+

+        if (!checkonly)

+            DeviceSetTransform(dev, f);

+    }

+

+    return Success;

+}

+

+/* Pair the keyboard to the pointer device. Keyboard events will follow the

+ * pointer sprite. Only applicable for master devices.

+ * If the client is set, the request to pair comes from some client. In this

+ * case, we need to check for access. If the client is NULL, it's from an

+ * internal automatic pairing, we must always permit this.

+ */

+static int

+PairDevices(ClientPtr client, DeviceIntPtr ptr, DeviceIntPtr kbd)

+{

+    if (!ptr)

+        return BadDevice;

+

+    /* Don't allow pairing for slave devices */

+    if (!IsMaster(ptr) || !IsMaster(kbd))

+        return BadDevice;

+

+    if (ptr->spriteInfo->paired)

+        return BadDevice;

+

+    if (kbd->spriteInfo->spriteOwner)

+    {

+        free(kbd->spriteInfo->sprite);

+        kbd->spriteInfo->sprite = NULL;

+        kbd->spriteInfo->spriteOwner = FALSE;

+    }

+

+    kbd->spriteInfo->sprite = ptr->spriteInfo->sprite;

+    kbd->spriteInfo->paired = ptr;

+    ptr->spriteInfo->paired = kbd;

+    return Success;

+}

+

+

+/**

+ * Find and return the next unpaired MD pointer device.

+ */

+static DeviceIntPtr

+NextFreePointerDevice(void)

+{

+    DeviceIntPtr dev;

+    for (dev = inputInfo.devices; dev; dev = dev->next)

+        if (IsMaster(dev) &&

+                dev->spriteInfo->spriteOwner &&

+                !dev->spriteInfo->paired)

+            return dev;

+    return NULL;

+}

+

+/**

+ * Create a new input device and init it to sane values. The device is added

+ * to the server's off_devices list.

+ *

+ * @param deviceProc Callback for device control function (switch dev on/off).

+ * @return The newly created device.

+ */

+DeviceIntPtr

+AddInputDevice(ClientPtr client, DeviceProc deviceProc, Bool autoStart)

+{

+    DeviceIntPtr dev, *prev; /* not a typo */

+    DeviceIntPtr devtmp;

+    int devid;

+    char devind[MAXDEVICES];

+    BOOL enabled;

+    float transform[9];

+

+    /* Find next available id, 0 and 1 are reserved */

+    memset(devind, 0, sizeof(char)*MAXDEVICES);

+    for (devtmp = inputInfo.devices; devtmp; devtmp = devtmp->next)

+	devind[devtmp->id]++;

+    for (devtmp = inputInfo.off_devices; devtmp; devtmp = devtmp->next)

+	devind[devtmp->id]++;

+    for (devid = 2; devid < MAXDEVICES && devind[devid]; devid++)

+	;

+

+    if (devid >= MAXDEVICES)

+	return (DeviceIntPtr)NULL;

+    dev =  _dixAllocateObjectWithPrivates(sizeof(DeviceIntRec) + sizeof(SpriteInfoRec),

+					  sizeof(DeviceIntRec) + sizeof(SpriteInfoRec),

+					  offsetof(DeviceIntRec, devPrivates), PRIVATE_DEVICE);

+    if (!dev)

+	return (DeviceIntPtr)NULL;

+    dev->id = devid;

+    dev->public.processInputProc = ProcessOtherEvent;

+    dev->public.realInputProc = ProcessOtherEvent;

+    dev->public.enqueueInputProc = EnqueueEvent;

+    dev->deviceProc = deviceProc;

+    dev->startup = autoStart;

+

+    /* device grab defaults */

+    dev->deviceGrab.grabTime = currentTime;

+    dev->deviceGrab.ActivateGrab = ActivateKeyboardGrab;

+    dev->deviceGrab.DeactivateGrab = DeactivateKeyboardGrab;

+

+    XkbSetExtension(dev, ProcessKeyboardEvent);

+

+    dev->coreEvents = TRUE;

+

+    /* sprite defaults */

+    dev->spriteInfo = (SpriteInfoPtr)&dev[1];

+

+    /*  security creation/labeling check

+     */

+    if (XaceHook(XACE_DEVICE_ACCESS, client, dev, DixCreateAccess)) {

+	free(dev);

+	return NULL;

+    }

+

+    inputInfo.numDevices++;

+

+    for (prev = &inputInfo.off_devices; *prev; prev = &(*prev)->next)

+        ;

+    *prev = dev;

+    dev->next = NULL;

+

+    enabled = FALSE;

+    XIChangeDeviceProperty(dev, XIGetKnownProperty(XI_PROP_ENABLED),

+                           XA_INTEGER, 8, PropModeReplace, 1, &enabled,

+                           FALSE);

+    XISetDevicePropertyDeletable(dev, XIGetKnownProperty(XI_PROP_ENABLED), FALSE);

+

+    /* unity matrix */

+    memset(transform, 0, sizeof(transform));

+    transform[0] = transform[4] = transform[8] = 1.0f;

+

+    XIChangeDeviceProperty(dev, XIGetKnownProperty(XI_PROP_TRANSFORM),

+                           XIGetKnownProperty(XATOM_FLOAT), 32,

+                           PropModeReplace, 9, transform, FALSE);

+    XISetDevicePropertyDeletable(dev, XIGetKnownProperty(XI_PROP_TRANSFORM),

+                                 FALSE);

+

+    XIRegisterPropertyHandler(dev, DeviceSetProperty, NULL, NULL);

+

+    return dev;

+}

+

+void

+SendDevicePresenceEvent(int deviceid, int type)

+{

+    DeviceIntRec dummyDev;

+    devicePresenceNotify ev;

+

+    memset(&dummyDev, 0, sizeof(DeviceIntRec));

+    ev.type = DevicePresenceNotify;

+    ev.time = currentTime.milliseconds;

+    ev.devchange = type;

+    ev.deviceid = deviceid;

+    dummyDev.id = XIAllDevices;

+    SendEventToAllWindows(&dummyDev, DevicePresenceNotifyMask,

+                          (xEvent*)&ev, 1);

+}

+

+/**

+ * Enable the device through the driver, add the device to the device list.

+ * Switch device ON through the driver and push it onto the global device

+ * list. Initialize the DIX sprite or pair the device. All clients are

+ * notified about the device being enabled.

+ *

+ * A master pointer device needs to be enabled before a master keyboard

+ * device.

+ *

+ * @param The device to be enabled.

+ * @param sendevent True if an XI2 event should be sent.

+ * @return TRUE on success or FALSE otherwise.

+ */

+Bool

+EnableDevice(DeviceIntPtr dev, BOOL sendevent)

+{

+    DeviceIntPtr *prev;

+    int ret;

+    DeviceIntPtr other;

+    BOOL enabled;

+    int flags[MAXDEVICES] = {0};

+

+    for (prev = &inputInfo.off_devices;

+	 *prev && (*prev != dev);

+	 prev = &(*prev)->next)

+	;

+

+    if (!dev->spriteInfo->sprite)

+    {

+        if (IsMaster(dev))

+        {

+            /* Sprites appear on first root window, so we can hardcode it */

+            if (dev->spriteInfo->spriteOwner)

+            {

+                InitializeSprite(dev, screenInfo.screens[0]->root);

+                                                 /* mode doesn't matter */

+                EnterWindow(dev, screenInfo.screens[0]->root, NotifyAncestor);

+            }

+            else if ((other = NextFreePointerDevice()) == NULL)

+            {

+                ErrorF("[dix] cannot find pointer to pair with. "

+                       "This is a bug.\n");

+                return FALSE;

+            } else

+                PairDevices(NULL, other, dev);

+        } else

+        {

+            if (dev->coreEvents)

+                other = (IsPointerDevice(dev)) ? inputInfo.pointer :

+                    inputInfo.keyboard;

+            else

+                other = NULL; /* auto-float non-core devices */

+            AttachDevice(NULL, dev, other);

+        }

+    }

+

+    if ((*prev != dev) || !dev->inited ||

+	((ret = (*dev->deviceProc)(dev, DEVICE_ON)) != Success)) {

+        ErrorF("[dix] couldn't enable device %d\n", dev->id);

+	return FALSE;

+    }

+    dev->enabled = TRUE;

+    *prev = dev->next;

+

+    for (prev = &inputInfo.devices; *prev; prev = &(*prev)->next)

+        ;

+    *prev = dev;

+    dev->next = NULL;

+

+    enabled = TRUE;

+    XIChangeDeviceProperty(dev, XIGetKnownProperty(XI_PROP_ENABLED),

+                           XA_INTEGER, 8, PropModeReplace, 1, &enabled,

+                           TRUE);

+

+    SendDevicePresenceEvent(dev->id, DeviceEnabled);

+    if (sendevent)

+    {

+        flags[dev->id] |= XIDeviceEnabled;

+        XISendDeviceHierarchyEvent(flags);

+    }

+

+    RecalculateMasterButtons(dev);

+

+    return TRUE;

+}

+

+/**

+ * Switch a device off through the driver and push it onto the off_devices

+ * list. A device will not send events while disabled. All clients are

+ * notified about the device being disabled.

+ *

+ * Master keyboard devices have to be disabled before master pointer devices

+ * otherwise things turn bad.

+ *

+ * @param sendevent True if an XI2 event should be sent.

+ * @return TRUE on success or FALSE otherwise.

+ */

+Bool

+DisableDevice(DeviceIntPtr dev, BOOL sendevent)

+{

+    DeviceIntPtr *prev, other;

+    BOOL enabled;

+    int flags[MAXDEVICES] = {0};

+

+    for (prev = &inputInfo.devices;

+	 *prev && (*prev != dev);

+	 prev = &(*prev)->next)

+	;

+    if (*prev != dev)

+	return FALSE;

+

+    /* float attached devices */

+    if (IsMaster(dev))

+    {

+        for (other = inputInfo.devices; other; other = other->next)

+        {

+            if (!IsMaster(other) && GetMaster(other, MASTER_ATTACHED) == dev)

+            {

+                AttachDevice(NULL, other, NULL);

+                flags[other->id] |= XISlaveDetached;

+            }

+        }

+    }

+    else

+    {

+        for (other = inputInfo.devices; other; other = other->next)

+        {

+	    if (IsMaster(other) && other->lastSlave == dev)

+		other->lastSlave = NULL;

+	}

+    }

+

+    if (IsMaster(dev) && dev->spriteInfo->sprite)

+    {

+        for (other = inputInfo.devices; other; other = other->next)

+        {

+            if (other->spriteInfo->paired == dev)

+            {

+                ErrorF("[dix] cannot disable device, still paired. "

+                        "This is a bug. \n");

+                return FALSE;

+            }

+        }

+    }

+

+    (void)(*dev->deviceProc)(dev, DEVICE_OFF);

+    dev->enabled = FALSE;

+

+    /* now that the device is disabled, we can reset the signal handler's

+     * last.slave */

+    OsBlockSignals();

+    for (other = inputInfo.devices; other; other = other->next)

+    {

+        if (other->last.slave == dev)

+            other->last.slave = NULL;

+    }

+    OsReleaseSignals();

+

+    LeaveWindow(dev);

+    SetFocusOut(dev);

+

+    *prev = dev->next;

+    dev->next = inputInfo.off_devices;

+    inputInfo.off_devices = dev;

+

+    enabled = FALSE;

+    XIChangeDeviceProperty(dev, XIGetKnownProperty(XI_PROP_ENABLED),

+                           XA_INTEGER, 8, PropModeReplace, 1, &enabled,

+                           TRUE);

+

+    SendDevicePresenceEvent(dev->id, DeviceDisabled);

+    if (sendevent)

+    {

+        flags[dev->id] = XIDeviceDisabled;

+        XISendDeviceHierarchyEvent(flags);

+    }

+

+    RecalculateMasterButtons(dev);

+

+    return TRUE;

+}

+

+/**

+ * Initialise a new device through the driver and tell all clients about the

+ * new device.

+ *

+ * Must be called before EnableDevice.

+ * The device will NOT send events until it is enabled!

+ *

+ * @param sendevent True if an XI2 event should be sent.

+ * @return Success or an error code on failure.

+ */

+int

+ActivateDevice(DeviceIntPtr dev, BOOL sendevent)

+{

+    int ret = Success;

+    ScreenPtr pScreen = screenInfo.screens[0];

+

+    if (!dev || !dev->deviceProc)

+        return BadImplementation;

+

+    ret = (*dev->deviceProc) (dev, DEVICE_INIT);

+    dev->inited = (ret == Success);

+    if (!dev->inited)

+        return ret;

+

+    /* Initialize memory for sprites. */

+    if (IsMaster(dev) && dev->spriteInfo->spriteOwner)

+        if (!pScreen->DeviceCursorInitialize(dev, pScreen))

+            ret = BadAlloc;

+

+    SendDevicePresenceEvent(dev->id, DeviceAdded);

+    if (sendevent)

+    {

+        int flags[MAXDEVICES] = {0};

+        flags[dev->id] = XISlaveAdded;

+        XISendDeviceHierarchyEvent(flags);

+    }

+    return ret;

+}

+

+/**

+ * Ring the bell.

+ * The actual task of ringing the bell is the job of the DDX.

+ */

+static void

+CoreKeyboardBell(int volume, DeviceIntPtr pDev, pointer arg, int something)

+{

+    KeybdCtrl *ctrl = arg;

+

+    DDXRingBell(volume, ctrl->bell_pitch, ctrl->bell_duration);

+}

+

+static void

+CoreKeyboardCtl(DeviceIntPtr pDev, KeybdCtrl *ctrl)

+{

+    return;

+}

+

+/**

+ * Device control function for the Virtual Core Keyboard.

+ */

+int

+CoreKeyboardProc(DeviceIntPtr pDev, int what)

+{

+

+    switch (what) {

+    case DEVICE_INIT:

+        if (!InitKeyboardDeviceStruct(pDev, NULL, CoreKeyboardBell,

+                                      CoreKeyboardCtl))

+        {

+            ErrorF("Keyboard initialization failed. This could be a missing "

+                   "or incorrect setup of xkeyboard-config.\n");

+            return BadValue;

+        }

+        return Success;

+

+    case DEVICE_ON:

+    case DEVICE_OFF:

+        return Success;

+

+    case DEVICE_CLOSE:

+        return Success;

+    }

+

+    return BadMatch;

+}

+

+/**

+ * Device control function for the Virtual Core Pointer.

+ */

+int

+CorePointerProc(DeviceIntPtr pDev, int what)

+{

+#define NBUTTONS 10

+#define NAXES 2

+    BYTE map[NBUTTONS + 1];

+    int i = 0;

+    Atom btn_labels[NBUTTONS] = {0};

+    Atom axes_labels[NAXES] = {0};

+

+    switch (what) {

+    case DEVICE_INIT:

+        for (i = 1; i <= NBUTTONS; i++)

+            map[i] = i;

+

+	btn_labels[0] = XIGetKnownProperty(BTN_LABEL_PROP_BTN_LEFT);

+	btn_labels[1] = XIGetKnownProperty(BTN_LABEL_PROP_BTN_MIDDLE);

+	btn_labels[2] = XIGetKnownProperty(BTN_LABEL_PROP_BTN_RIGHT);

+	btn_labels[3] = XIGetKnownProperty(BTN_LABEL_PROP_BTN_WHEEL_UP);

+	btn_labels[4] = XIGetKnownProperty(BTN_LABEL_PROP_BTN_WHEEL_DOWN);

+	btn_labels[5] = XIGetKnownProperty(BTN_LABEL_PROP_BTN_HWHEEL_LEFT);

+	btn_labels[6] = XIGetKnownProperty(BTN_LABEL_PROP_BTN_HWHEEL_RIGHT);

+	/* don't know about the rest */

+

+	axes_labels[0] = XIGetKnownProperty(AXIS_LABEL_PROP_REL_X);

+	axes_labels[1] = XIGetKnownProperty(AXIS_LABEL_PROP_REL_Y);

+

+        if (!InitPointerDeviceStruct((DevicePtr)pDev, map, NBUTTONS, btn_labels,

+                                (PtrCtrlProcPtr)NoopDDA,

+                                GetMotionHistorySize(), NAXES, axes_labels))

+        {

+            ErrorF("Could not initialize device '%s'. Out of memory.\n",

+                   pDev->name);

+            return BadAlloc; /* IPDS only fails on allocs */

+        }

+        pDev->valuator->axisVal[0] = screenInfo.screens[0]->width / 2;

+        pDev->last.valuators[0] = pDev->valuator->axisVal[0];

+        pDev->valuator->axisVal[1] = screenInfo.screens[0]->height / 2;

+        pDev->last.valuators[1] = pDev->valuator->axisVal[1];

+        break;

+

+    case DEVICE_CLOSE:

+        break;

+

+    default:

+        break;

+    }

+

+    return Success;

+

+#undef NBUTTONS

+#undef NAXES

+}

+

+/**

+ * Initialise the two core devices, VCP and VCK (see events.c).

+ * Both devices are not tied to physical devices, but guarantee that there is

+ * always a keyboard and a pointer present and keep the protocol semantics.

+ *

+ * Note that the server MUST have two core devices at all times, even if there

+ * is no physical device connected.

+ */

+void

+InitCoreDevices(void)

+{

+    if (AllocDevicePair(serverClient, "Virtual core",

+                        &inputInfo.pointer, &inputInfo.keyboard,

+                        CorePointerProc, CoreKeyboardProc,

+                        TRUE) != Success)

+        FatalError("Failed to allocate core devices");

+

+    if (ActivateDevice(inputInfo.pointer, TRUE) != Success ||

+        ActivateDevice(inputInfo.keyboard, TRUE) != Success)

+        FatalError("Failed to activate core devices.");

+    if (!EnableDevice(inputInfo.pointer, TRUE) ||

+        !EnableDevice(inputInfo.keyboard, TRUE))

+        FatalError("Failed to enable core devices.");

+

+    InitXTestDevices();

+}

+

+/**

+ * Activate all switched-off devices and then enable all those devices.

+ *

+ * Will return an error if no core keyboard or core pointer is present.

+ * In theory this should never happen if you call InitCoreDevices() first.

+ *

+ * InitAndStartDevices needs to be called AFTER the windows are initialized.

+ * Devices will start sending events after InitAndStartDevices() has

+ * completed.

+ *

+ * @return Success or error code on failure.

+ */

+int

+InitAndStartDevices(void)

+{

+    DeviceIntPtr dev, next;

+

+    for (dev = inputInfo.off_devices; dev; dev = dev->next) {

+        DebugF("(dix) initialising device %d\n", dev->id);

+        if (!dev->inited)

+            ActivateDevice(dev, TRUE);

+    }

+

+    /* enable real devices */

+    for (dev = inputInfo.off_devices; dev; dev = next)

+    {

+        DebugF("(dix) enabling device %d\n", dev->id);

+	next = dev->next;

+	if (dev->inited && dev->startup)

+	    EnableDevice(dev, TRUE);

+    }

+

+    return Success;

+}

+

+/**

+ * Free the given device class and reset the pointer to NULL.

+ */

+static void

+FreeDeviceClass(int type, pointer *class)

+{

+    if (!(*class))

+        return;

+

+    switch(type)

+    {

+        case KeyClass:

+            {

+                KeyClassPtr* k = (KeyClassPtr*)class;

+                if ((*k)->xkbInfo)

+                {

+                    XkbFreeInfo((*k)->xkbInfo);

+                    (*k)->xkbInfo = NULL;

+                }

+                free((*k));

+                break;

+            }

+        case ButtonClass:

+            {

+                ButtonClassPtr *b = (ButtonClassPtr*)class;

+                free((*b)->xkb_acts);

+                free((*b));

+                break;

+            }

+        case ValuatorClass:

+            {

+                ValuatorClassPtr *v = (ValuatorClassPtr*)class;

+

+                free((*v)->motion);

+                free((*v));

+                break;

+            }

+        case FocusClass:

+            {

+                FocusClassPtr *f = (FocusClassPtr*)class;

+                free((*f)->trace);

+                free((*f));

+                break;

+            }

+        case ProximityClass:

+            {

+                ProximityClassPtr *p = (ProximityClassPtr*)class;

+                free((*p));

+                break;

+            }

+    }

+    *class = NULL;

+}

+

+static void

+FreeFeedbackClass(int type, pointer *class)

+{

+    if (!(*class))

+        return;

+

+    switch(type)

+    {

+        case KbdFeedbackClass:

+            {

+                KbdFeedbackPtr *kbdfeed = (KbdFeedbackPtr*)class;

+                KbdFeedbackPtr k, knext;

+                for (k = (*kbdfeed); k; k = knext) {

+                    knext = k->next;

+                    if (k->xkb_sli)

+                        XkbFreeSrvLedInfo(k->xkb_sli);

+                    free(k);

+                }

+                break;

+            }

+        case PtrFeedbackClass:

+            {

+                PtrFeedbackPtr *ptrfeed = (PtrFeedbackPtr*)class;

+                PtrFeedbackPtr p, pnext;

+

+                for (p = (*ptrfeed); p; p = pnext) {

+                    pnext = p->next;

+                    free(p);

+                }

+                break;

+            }

+        case IntegerFeedbackClass:

+            {

+                IntegerFeedbackPtr *intfeed = (IntegerFeedbackPtr*)class;

+                IntegerFeedbackPtr i, inext;

+

+                for (i = (*intfeed); i; i = inext) {

+                    inext = i->next;

+                    free(i);

+                }

+                break;

+            }

+        case StringFeedbackClass:

+            {

+                StringFeedbackPtr *stringfeed = (StringFeedbackPtr*)class;

+                StringFeedbackPtr s, snext;

+

+                for (s = (*stringfeed); s; s = snext) {

+                    snext = s->next;

+                    free(s->ctrl.symbols_supported);

+                    free(s->ctrl.symbols_displayed);

+                    free(s);

+                }

+                break;

+            }

+        case BellFeedbackClass:

+            {

+                BellFeedbackPtr *bell = (BellFeedbackPtr*)class;

+                BellFeedbackPtr b, bnext;

+

+                for (b = (*bell); b; b = bnext) {

+                    bnext = b->next;

+                    free(b);

+                }

+                break;

+            }

+        case LedFeedbackClass:

+            {

+                LedFeedbackPtr *leds = (LedFeedbackPtr*)class;

+                LedFeedbackPtr l, lnext;

+

+                for (l = (*leds); l; l = lnext) {

+                    lnext = l->next;

+                    if (l->xkb_sli)

+                        XkbFreeSrvLedInfo(l->xkb_sli);

+                    free(l);

+                }

+                break;

+            }

+    }

+    *class = NULL;

+}

+

+static void

+FreeAllDeviceClasses(ClassesPtr classes)

+{

+    if (!classes)

+        return;

+

+    FreeDeviceClass(KeyClass, (pointer)&classes->key);

+    FreeDeviceClass(ValuatorClass, (pointer)&classes->valuator);

+    FreeDeviceClass(ButtonClass, (pointer)&classes->button);

+    FreeDeviceClass(FocusClass, (pointer)&classes->focus);

+    FreeDeviceClass(ProximityClass, (pointer)&classes->proximity);

+

+    FreeFeedbackClass(KbdFeedbackClass, (pointer)&classes->kbdfeed);

+    FreeFeedbackClass(PtrFeedbackClass, (pointer)&classes->ptrfeed);

+    FreeFeedbackClass(IntegerFeedbackClass, (pointer)&classes->intfeed);

+    FreeFeedbackClass(StringFeedbackClass, (pointer)&classes->stringfeed);

+    FreeFeedbackClass(BellFeedbackClass, (pointer)&classes->bell);

+    FreeFeedbackClass(LedFeedbackClass, (pointer)&classes->leds);

+

+}

+

+/**

+ * Close down a device and free all resources.

+ * Once closed down, the driver will probably not expect you that you'll ever

+ * enable it again and free associated structs. If you want the device to just

+ * be disabled, DisableDevice().

+ * Don't call this function directly, use RemoveDevice() instead.

+ */

+static void

+CloseDevice(DeviceIntPtr dev)

+{

+    ScreenPtr screen = screenInfo.screens[0];

+    ClassesPtr classes;

+    int j;

+

+    if (!dev)

+        return;

+

+    XIDeleteAllDeviceProperties(dev);

+

+    if (dev->inited)

+	(void)(*dev->deviceProc)(dev, DEVICE_CLOSE);

+

+    /* free sprite memory */

+    if (IsMaster(dev) && dev->spriteInfo->sprite)

+        screen->DeviceCursorCleanup(dev, screen);

+

+    /* free acceleration info */

+    if(dev->valuator && dev->valuator->accelScheme.AccelCleanupProc)

+	dev->valuator->accelScheme.AccelCleanupProc(dev);

+

+    while (dev->xkb_interest)

+	XkbRemoveResourceClient((DevicePtr)dev,dev->xkb_interest->resource);

+

+    free(dev->name);

+

+    classes = (ClassesPtr)&dev->key;

+    FreeAllDeviceClasses(classes);

+

+    if (IsMaster(dev))

+    {

+        classes = dev->unused_classes;

+        FreeAllDeviceClasses(classes);

+	free(classes);

+    }

+

+    if (DevHasCursor(dev) && dev->spriteInfo->sprite) {

+	if (dev->spriteInfo->sprite->current)

+	    FreeCursor(dev->spriteInfo->sprite->current, None);

+        free(dev->spriteInfo->sprite->spriteTrace);

+        free(dev->spriteInfo->sprite);

+    }

+

+    /* a client may have the device set as client pointer */

+    for (j = 0; j < currentMaxClients; j++)

+    {

+        if (clients[j] && clients[j]->clientPtr == dev)

+        {

+            clients[j]->clientPtr = NULL;

+            clients[j]->clientPtr = PickPointer(clients[j]);

+        }

+    }

+

+    free(dev->deviceGrab.sync.event);

+    free(dev->config_info);     /* Allocated in xf86ActivateDevice. */

+    dev->config_info = NULL;

+    dixFreeObjectWithPrivates(dev, PRIVATE_DEVICE);

+}

+

+/**

+ * Shut down all devices of one list and free all resources.

+ */

+static

+void

+CloseDeviceList(DeviceIntPtr *listHead)

+{

+    /* Used to mark devices that we tried to free */

+    Bool freedIds[MAXDEVICES];

+    DeviceIntPtr dev;

+    int i;

+

+    if (listHead == NULL)

+        return;

+

+    for (i = 0; i < MAXDEVICES; i++)

+        freedIds[i] = FALSE;

+

+    dev = *listHead;

+    while (dev != NULL)

+    {

+        freedIds[dev->id] = TRUE;

+        DeleteInputDeviceRequest(dev);

+

+        dev = *listHead;

+        while (dev != NULL && freedIds[dev->id])

+            dev = dev->next;

+    }

+}

+

+/**

+ * Shut down all devices, free all resources, etc.

+ * Only useful if you're shutting down the server!

+ */

+void

+CloseDownDevices(void)

+{

+    DeviceIntPtr dev;

+

+    /* Float all SDs before closing them. Note that at this point resources

+     * (e.g. cursors) have been freed already, so we can't just call

+     * AttachDevice(NULL, dev, NULL). Instead, we have to forcibly set master

+     * to NULL and pretend nothing happened.

+     */

+    for (dev = inputInfo.devices; dev; dev = dev->next)

+    {

+        if (!IsMaster(dev) && !IsFloating(dev))

+            dev->master = NULL;

+    }

+

+    CloseDeviceList(&inputInfo.devices);

+    CloseDeviceList(&inputInfo.off_devices);

+

+    CloseDevice(inputInfo.pointer);

+    CloseDevice(inputInfo.keyboard);

+

+    inputInfo.devices = NULL;

+    inputInfo.off_devices = NULL;

+    inputInfo.keyboard = NULL;

+    inputInfo.pointer = NULL;

+    XkbDeleteRulesDflts();

+}

+

+/**

+ * Remove the cursor sprite for all devices. This needs to be done before any

+ * resources are freed or any device is deleted.

+ */

+void

+UndisplayDevices(void)

+{

+    DeviceIntPtr dev;

+    ScreenPtr screen = screenInfo.screens[0];

+

+    for (dev = inputInfo.devices; dev; dev = dev->next)

+        screen->DisplayCursor(dev, screen, NullCursor);

+}

+

+/**

+ * Remove a device from the device list, closes it and thus frees all

+ * resources.

+ * Removes both enabled and disabled devices and notifies all devices about

+ * the removal of the device.

+ *

+ * No PresenceNotify is sent for device that the client never saw. This can

+ * happen if a malloc fails during the addition of master devices. If

+ * dev->init is FALSE it means the client never received a DeviceAdded event,

+ * so let's not send a DeviceRemoved event either.

+ *

+ * @param sendevent True if an XI2 event should be sent.

+ */

+int

+RemoveDevice(DeviceIntPtr dev, BOOL sendevent)

+{

+    DeviceIntPtr prev,tmp,next;

+    int ret = BadMatch;

+    ScreenPtr screen = screenInfo.screens[0];

+    int deviceid;

+    int initialized;

+    int flags[MAXDEVICES] = {0};

+

+    DebugF("(dix) removing device %d\n", dev->id);

+

+    if (!dev || dev == inputInfo.keyboard || dev == inputInfo.pointer)

+        return BadImplementation;

+

+    initialized = dev->inited;

+    deviceid = dev->id;

+

+    if (initialized)

+    {

+        if (DevHasCursor(dev))

+            screen->DisplayCursor(dev, screen, NullCursor);

+

+        DisableDevice(dev, sendevent);

+        flags[dev->id] = XIDeviceDisabled;

+    }

+

+    prev = NULL;

+    for (tmp = inputInfo.devices; tmp; (prev = tmp), (tmp = next)) {

+	next = tmp->next;

+	if (tmp == dev) {

+

+	    if (prev==NULL)

+		inputInfo.devices = next;

+	    else

+		prev->next = next;

+

+	    flags[tmp->id] = IsMaster(tmp) ? XIMasterRemoved : XISlaveRemoved;

+	    CloseDevice(tmp);

+	    ret = Success;

+	}

+    }

+

+    prev = NULL;

+    for (tmp = inputInfo.off_devices; tmp; (prev = tmp), (tmp = next)) {

+	next = tmp->next;

+	if (tmp == dev) {

+	    flags[tmp->id] = IsMaster(tmp) ? XIMasterRemoved : XISlaveRemoved;

+	    CloseDevice(tmp);

+

+	    if (prev == NULL)

+		inputInfo.off_devices = next;

+	    else

+		prev->next = next;

+

+            ret = Success;

+	}

+    }

+

+    if (ret == Success && initialized) {

+        inputInfo.numDevices--;

+        SendDevicePresenceEvent(deviceid, DeviceRemoved);

+        if (sendevent)

+            XISendDeviceHierarchyEvent(flags);

+    }

+

+    return ret;

+}

+

+int

+NumMotionEvents(void)

+{

+    /* only called to fill data in initial connection reply.

+     * VCP is ok here, it is the only fixed device we have. */

+    return inputInfo.pointer->valuator->numMotionEvents;

+}

+

+int

+dixLookupDevice(DeviceIntPtr *pDev, int id, ClientPtr client, Mask access_mode)

+{

+    DeviceIntPtr dev;

+    int rc;

+    *pDev = NULL;

+

+    for (dev=inputInfo.devices; dev; dev=dev->next) {

+        if (dev->id == id)

+            goto found;

+    }

+    for (dev=inputInfo.off_devices; dev; dev=dev->next) {

+        if (dev->id == id)

+	    goto found;

+    }

+    return BadDevice;

+

+found:

+    rc = XaceHook(XACE_DEVICE_ACCESS, client, dev, access_mode);

+    if (rc == Success)

+	*pDev = dev;

+    return rc;

+}

+

+void

+QueryMinMaxKeyCodes(KeyCode *minCode, KeyCode *maxCode)

+{

+    if (inputInfo.keyboard) {

+	*minCode = inputInfo.keyboard->key->xkbInfo->desc->min_key_code;

+	*maxCode = inputInfo.keyboard->key->xkbInfo->desc->max_key_code;

+    }

+}

+

+/* Notably, this function does not expand the destination's keycode range, or

+ * notify clients. */

+Bool

+SetKeySymsMap(KeySymsPtr dst, KeySymsPtr src)

+{

+    int i, j;

+    KeySym *tmp;

+    int rowDif = src->minKeyCode - dst->minKeyCode;

+

+    /* if keysym map size changes, grow map first */

+    if (src->mapWidth < dst->mapWidth) {

+        for (i = src->minKeyCode; i <= src->maxKeyCode; i++) {

+#define SI(r, c) (((r - src->minKeyCode) * src->mapWidth) + (c))

+#define DI(r, c) (((r - dst->minKeyCode) * dst->mapWidth) + (c))

+	    for (j = 0; j < src->mapWidth; j++)

+		dst->map[DI(i, j)] = src->map[SI(i, j)];

+	    for (j = src->mapWidth; j < dst->mapWidth; j++)

+		dst->map[DI(i, j)] = NoSymbol;

+#undef SI

+#undef DI

+	}

+	return TRUE;

+    }

+    else if (src->mapWidth > dst->mapWidth) {

+        i = sizeof(KeySym) * src->mapWidth *

+             (dst->maxKeyCode - dst->minKeyCode + 1);

+        tmp = calloc(sizeof(KeySym), i);

+        if (!tmp)

+            return FALSE;

+

+        if (dst->map) {

+            for (i = 0; i <= dst->maxKeyCode-dst->minKeyCode; i++)

+                memmove(&tmp[i * src->mapWidth], &dst->map[i * dst->mapWidth],

+                        dst->mapWidth * sizeof(KeySym));

+            free(dst->map);

+        }

+        dst->mapWidth = src->mapWidth;

+        dst->map = tmp;

+    }

+    else if (!dst->map) {

+        i = sizeof(KeySym) * src->mapWidth *

+             (dst->maxKeyCode - dst->minKeyCode + 1);

+        tmp = calloc(sizeof(KeySym), i);

+        if (!tmp)

+            return FALSE;

+

+        dst->map = tmp;

+        dst->mapWidth = src->mapWidth;

+    }

+

+    memmove(&dst->map[rowDif * dst->mapWidth], src->map,

+            (src->maxKeyCode - src->minKeyCode + 1) *

+            dst->mapWidth * sizeof(KeySym));

+

+    return TRUE;

+}

+

+Bool

+InitButtonClassDeviceStruct(DeviceIntPtr dev, int numButtons, Atom* labels,

+                            CARD8 *map)

+{

+    ButtonClassPtr butc;

+    int i;

+

+    butc = calloc(1, sizeof(ButtonClassRec));

+    if (!butc)

+	return FALSE;

+    butc->numButtons = numButtons;

+    butc->sourceid = dev->id;

+    for (i = 1; i <= numButtons; i++)

+	butc->map[i] = map[i];

+    for (i = numButtons + 1; i < MAP_LENGTH; i++)

+        butc->map[i] = i;

+    memcpy(butc->labels, labels, numButtons * sizeof(Atom));

+    dev->button = butc;

+    return TRUE;

+}

+

+Bool

+InitValuatorClassDeviceStruct(DeviceIntPtr dev, int numAxes, Atom *labels,

+                              int numMotionEvents, int mode)

+{

+    int i;

+    ValuatorClassPtr valc;

+    union align_u { ValuatorClassRec valc; double d; } *align;

+

+    if (!dev)

+        return FALSE;

+

+    if (numAxes > MAX_VALUATORS)

+    {

+        LogMessage(X_WARNING,

+                   "Device '%s' has %d axes, only using first %d.\n",

+                   dev->name, numAxes, MAX_VALUATORS);

+        numAxes = MAX_VALUATORS;

+    }

+

+    align = (union align_u *) calloc(1, sizeof(union align_u) +

+				     numAxes * sizeof(double) +

+				     numAxes * sizeof(AxisInfo));

+    if (!align)

+	return FALSE;

+

+    valc = &align->valc;

+    valc->sourceid = dev->id;

+    valc->motion = NULL;

+    valc->first_motion = 0;

+    valc->last_motion = 0;

+

+    valc->numMotionEvents = numMotionEvents;

+    valc->motionHintWindow = NullWindow;

+    valc->numAxes = numAxes;

+    valc->axisVal = (double *)(align + 1);

+    valc->axes = (AxisInfoPtr)(valc->axisVal + numAxes);

+

+    if (mode & OutOfProximity)

+        InitProximityClassDeviceStruct(dev);

+

+    dev->valuator = valc;

+

+    AllocateMotionHistory(dev);

+

+    for (i=0; i<numAxes; i++) {

+        InitValuatorAxisStruct(dev, i, labels[i], NO_AXIS_LIMITS, NO_AXIS_LIMITS,

+                               0, 0, 0, mode);

+	valc->axisVal[i]=0;

+    }

+

+    dev->last.numValuators = numAxes;

+

+    if (IsMaster(dev) || /* do not accelerate master or xtest devices */

+        IsXTestDevice(dev, NULL))

+	InitPointerAccelerationScheme(dev, PtrAccelNoOp);

+    else

+	InitPointerAccelerationScheme(dev, PtrAccelDefault);

+    return TRUE;

+}

+

+/* global list of acceleration schemes */

+ValuatorAccelerationRec pointerAccelerationScheme[] = {

+    {PtrAccelNoOp, NULL, NULL, NULL, NULL},

+    {PtrAccelPredictable, acceleratePointerPredictable, NULL,

+        InitPredictableAccelerationScheme, AccelerationDefaultCleanup},

+    {PtrAccelLightweight, acceleratePointerLightweight, NULL, NULL, NULL},

+    {-1, NULL, NULL, NULL, NULL} /* terminator */

+};

+

+/**

+ * install an acceleration scheme. returns TRUE on success, and should not

+ * change anything if unsuccessful.

+ */

+Bool

+InitPointerAccelerationScheme(DeviceIntPtr dev,

+                              int scheme)

+{

+    int x, i = -1;

+    ValuatorClassPtr val;

+

+    val = dev->valuator;

+

+    if (!val)

+        return FALSE;

+

+    if (IsMaster(dev) && scheme != PtrAccelNoOp)

+        return FALSE;

+

+    for (x = 0; pointerAccelerationScheme[x].number >= 0; x++) {

+        if(pointerAccelerationScheme[x].number == scheme){

+            i = x;

+            break;

+        }

+    }

+

+    if (-1 == i)

+        return FALSE;

+

+    if (val->accelScheme.AccelCleanupProc)

+        val->accelScheme.AccelCleanupProc(dev);

+

+    if (pointerAccelerationScheme[i].AccelInitProc) {

+        if (!pointerAccelerationScheme[i].AccelInitProc(dev,

+                                            &pointerAccelerationScheme[i])) {

+            return FALSE;

+        }

+    } else {

+        val->accelScheme = pointerAccelerationScheme[i];

+    }

+    return TRUE;

+}

+

+Bool

+InitAbsoluteClassDeviceStruct(DeviceIntPtr dev)

+{

+    AbsoluteClassPtr abs;

+

+    abs = malloc(sizeof(AbsoluteClassRec));

+    if (!abs)

+        return FALSE;

+

+    /* we don't do anything sensible with these, but should */

+    abs->min_x = NO_AXIS_LIMITS;

+    abs->min_y = NO_AXIS_LIMITS;

+    abs->max_x = NO_AXIS_LIMITS;

+    abs->max_y = NO_AXIS_LIMITS;

+    abs->flip_x = 0;

+    abs->flip_y = 0;

+    abs->rotation = 0;

+    abs->button_threshold = 0;

+

+    abs->offset_x = 0;

+    abs->offset_y = 0;

+    abs->width = NO_AXIS_LIMITS;

+    abs->height = NO_AXIS_LIMITS;

+    abs->following = 0;

+    abs->screen = 0;

+

+    abs->sourceid = dev->id;

+

+    dev->absolute = abs;

+

+    return TRUE;

+}

+

+Bool

+InitFocusClassDeviceStruct(DeviceIntPtr dev)

+{

+    FocusClassPtr focc;

+

+    focc = malloc(sizeof(FocusClassRec));

+    if (!focc)

+	return FALSE;

+    focc->win = PointerRootWin;

+    focc->revert = None;

+    focc->time = currentTime;

+    focc->trace = (WindowPtr *)NULL;

+    focc->traceSize = 0;

+    focc->traceGood = 0;

+    focc->sourceid = dev->id;

+    dev->focus = focc;

+    return TRUE;

+}

+

+Bool

+InitPtrFeedbackClassDeviceStruct(DeviceIntPtr dev, PtrCtrlProcPtr controlProc)

+{

+    PtrFeedbackPtr feedc;

+

+    feedc = malloc(sizeof(PtrFeedbackClassRec));

+    if (!feedc)

+	return FALSE;

+    feedc->CtrlProc = controlProc;

+    feedc->ctrl = defaultPointerControl;

+    feedc->ctrl.id = 0;

+    if ( (feedc->next = dev->ptrfeed) )

+        feedc->ctrl.id = dev->ptrfeed->ctrl.id + 1;

+    dev->ptrfeed = feedc;

+    (*controlProc)(dev, &feedc->ctrl);

+    return TRUE;

+}

+

+

+static LedCtrl defaultLedControl = {

+	DEFAULT_LEDS, DEFAULT_LEDS_MASK, 0};

+

+static BellCtrl defaultBellControl = {

+	DEFAULT_BELL,

+	DEFAULT_BELL_PITCH,

+	DEFAULT_BELL_DURATION,

+	0};

+

+static IntegerCtrl defaultIntegerControl = {

+	DEFAULT_INT_RESOLUTION,

+	DEFAULT_INT_MIN_VALUE,

+	DEFAULT_INT_MAX_VALUE,

+	DEFAULT_INT_DISPLAYED,

+	0};

+

+Bool

+InitStringFeedbackClassDeviceStruct (

+      DeviceIntPtr dev, StringCtrlProcPtr controlProc,

+      int max_symbols, int num_symbols_supported, KeySym *symbols)

+{

+    int i;

+    StringFeedbackPtr feedc;

+

+    feedc = malloc(sizeof(StringFeedbackClassRec));

+    if (!feedc)

+	return FALSE;

+    feedc->CtrlProc = controlProc;

+    feedc->ctrl.num_symbols_supported = num_symbols_supported;

+    feedc->ctrl.num_symbols_displayed = 0;

+    feedc->ctrl.max_symbols = max_symbols;

+    feedc->ctrl.symbols_supported = malloc(sizeof (KeySym) * num_symbols_supported);

+    feedc->ctrl.symbols_displayed = malloc(sizeof (KeySym) * max_symbols);

+    if (!feedc->ctrl.symbols_supported || !feedc->ctrl.symbols_displayed)

+    {

+	free(feedc->ctrl.symbols_supported);

+	free(feedc->ctrl.symbols_displayed);

+	free(feedc);

+	return FALSE;

+    }

+    for (i=0; i<num_symbols_supported; i++)

+	*(feedc->ctrl.symbols_supported+i) = *symbols++;

+    for (i=0; i<max_symbols; i++)

+	*(feedc->ctrl.symbols_displayed+i) = (KeySym) 0;

+    feedc->ctrl.id = 0;

+    if ( (feedc->next = dev->stringfeed) )

+	feedc->ctrl.id = dev->stringfeed->ctrl.id + 1;

+    dev->stringfeed = feedc;

+    (*controlProc)(dev, &feedc->ctrl);

+    return TRUE;

+}

+

+Bool

+InitBellFeedbackClassDeviceStruct (DeviceIntPtr dev, BellProcPtr bellProc,

+                                   BellCtrlProcPtr controlProc)

+{

+    BellFeedbackPtr feedc;

+

+    feedc = malloc(sizeof(BellFeedbackClassRec));

+    if (!feedc)

+	return FALSE;

+    feedc->CtrlProc = controlProc;

+    feedc->BellProc = bellProc;

+    feedc->ctrl = defaultBellControl;

+    feedc->ctrl.id = 0;

+    if ( (feedc->next = dev->bell) )

+	feedc->ctrl.id = dev->bell->ctrl.id + 1;

+    dev->bell = feedc;

+    (*controlProc)(dev, &feedc->ctrl);

+    return TRUE;

+}

+

+Bool

+InitLedFeedbackClassDeviceStruct (DeviceIntPtr dev, LedCtrlProcPtr controlProc)

+{

+    LedFeedbackPtr feedc;

+

+    feedc = malloc(sizeof(LedFeedbackClassRec));

+    if (!feedc)

+	return FALSE;

+    feedc->CtrlProc = controlProc;

+    feedc->ctrl = defaultLedControl;

+    feedc->ctrl.id = 0;

+    if ( (feedc->next = dev->leds) )

+	feedc->ctrl.id = dev->leds->ctrl.id + 1;

+    feedc->xkb_sli= NULL;

+    dev->leds = feedc;

+    (*controlProc)(dev, &feedc->ctrl);

+    return TRUE;

+}

+

+Bool

+InitIntegerFeedbackClassDeviceStruct (DeviceIntPtr dev, IntegerCtrlProcPtr controlProc)

+{

+    IntegerFeedbackPtr feedc;

+

+    feedc = malloc(sizeof(IntegerFeedbackClassRec));

+    if (!feedc)

+	return FALSE;

+    feedc->CtrlProc = controlProc;

+    feedc->ctrl = defaultIntegerControl;

+    feedc->ctrl.id = 0;

+    if ( (feedc->next = dev->intfeed) )

+	feedc->ctrl.id = dev->intfeed->ctrl.id + 1;

+    dev->intfeed = feedc;

+    (*controlProc)(dev, &feedc->ctrl);

+    return TRUE;

+}

+

+Bool

+InitPointerDeviceStruct(DevicePtr device, CARD8 *map, int numButtons, Atom* btn_labels,

+                        PtrCtrlProcPtr controlProc, int numMotionEvents,

+                        int numAxes, Atom *axes_labels)

+{

+    DeviceIntPtr dev = (DeviceIntPtr)device;

+

+    return(InitButtonClassDeviceStruct(dev, numButtons, btn_labels, map) &&

+	   InitValuatorClassDeviceStruct(dev, numAxes, axes_labels,

+					 numMotionEvents, Relative) &&

+	   InitPtrFeedbackClassDeviceStruct(dev, controlProc));

+}

+

+/*

+ * Check if the given buffer contains elements between low (inclusive) and

+ * high (inclusive) only.

+ *

+ * @return TRUE if the device map is invalid, FALSE otherwise.

+ */

+Bool

+BadDeviceMap(BYTE *buff, int length, unsigned low, unsigned high, XID *errval)

+{

+    int i;

+

+    for (i = 0; i < length; i++)

+	if (buff[i])		       /* only check non-zero elements */

+	{

+	    if ((low > buff[i]) || (high < buff[i]))

+	    {

+		*errval = buff[i];

+		return TRUE;

+	    }

+	}

+    return FALSE;

+}

+

+int

+ProcSetModifierMapping(ClientPtr client)

+{

+    xSetModifierMappingReply rep;

+    int rc;

+    REQUEST(xSetModifierMappingReq);

+    REQUEST_AT_LEAST_SIZE(xSetModifierMappingReq);

+

+    if (client->req_len != ((stuff->numKeyPerModifier << 1) +

+                bytes_to_int32(sizeof(xSetModifierMappingReq))))

+	return BadLength;

+

+    rep.type = X_Reply;

+    rep.length = 0;

+    rep.sequenceNumber = client->sequence;

+

+    rc = change_modmap(client, PickKeyboard(client), (KeyCode *)&stuff[1],

+                       stuff->numKeyPerModifier);

+    if (rc == MappingFailed || rc == -1)

+        return BadValue;

+    if (rc != Success && rc != MappingSuccess && rc != MappingFailed &&

+        rc != MappingBusy)

+	return rc;

+

+    rep.success = rc;

+

+    WriteReplyToClient(client, sizeof(xSetModifierMappingReply), &rep);

+    return Success;

+}

+

+int

+ProcGetModifierMapping(ClientPtr client)

+{

+    xGetModifierMappingReply rep;

+    int max_keys_per_mod = 0;

+    KeyCode *modkeymap = NULL;

+    REQUEST_SIZE_MATCH(xReq);

+

+    generate_modkeymap(client, PickKeyboard(client), &modkeymap,

+                       &max_keys_per_mod);

+

+    memset(&rep, 0, sizeof(xGetModifierMappingReply));

+    rep.type = X_Reply;

+    rep.numKeyPerModifier = max_keys_per_mod;

+    rep.sequenceNumber = client->sequence;

+    /* length counts 4 byte quantities - there are 8 modifiers 1 byte big */

+    rep.length = max_keys_per_mod << 1;

+

+    WriteReplyToClient(client, sizeof(xGetModifierMappingReply), &rep);

+    (void)WriteToClient(client, max_keys_per_mod * 8, (char *) modkeymap);

+

+    free(modkeymap);

+

+    return Success;

+}

+

+int

+ProcChangeKeyboardMapping(ClientPtr client)

+{

+    REQUEST(xChangeKeyboardMappingReq);

+    unsigned len;

+    KeySymsRec keysyms;

+    DeviceIntPtr pDev, tmp;

+    int rc;

+    REQUEST_AT_LEAST_SIZE(xChangeKeyboardMappingReq);

+

+    len = client->req_len - bytes_to_int32(sizeof(xChangeKeyboardMappingReq));

+    if (len != (stuff->keyCodes * stuff->keySymsPerKeyCode))

+            return BadLength;

+

+    pDev = PickKeyboard(client);

+

+    if ((stuff->firstKeyCode < pDev->key->xkbInfo->desc->min_key_code) ||

+	(stuff->firstKeyCode > pDev->key->xkbInfo->desc->max_key_code)) {

+	    client->errorValue = stuff->firstKeyCode;

+	    return BadValue;

+

+    }

+    if (((unsigned)(stuff->firstKeyCode + stuff->keyCodes - 1) >

+          pDev->key->xkbInfo->desc->max_key_code) ||

+        (stuff->keySymsPerKeyCode == 0)) {

+	    client->errorValue = stuff->keySymsPerKeyCode;

+	    return BadValue;

+    }

+

+    keysyms.minKeyCode = stuff->firstKeyCode;

+    keysyms.maxKeyCode = stuff->firstKeyCode + stuff->keyCodes - 1;

+    keysyms.mapWidth = stuff->keySymsPerKeyCode;

+    keysyms.map = (KeySym *) &stuff[1];

+

+    rc = XaceHook(XACE_DEVICE_ACCESS, client, pDev, DixManageAccess);

+    if (rc != Success)

+        return rc;

+

+    XkbApplyMappingChange(pDev, &keysyms, stuff->firstKeyCode,

+                          stuff->keyCodes, NULL, client);

+

+    for (tmp = inputInfo.devices; tmp; tmp = tmp->next) {

+        if (IsMaster(tmp) || GetMaster(tmp, MASTER_KEYBOARD) != pDev)

+            continue;

+        if (!tmp->key)

+            continue;

+

+        rc = XaceHook(XACE_DEVICE_ACCESS, client, pDev, DixManageAccess);

+        if (rc != Success)

+            continue;

+

+        XkbApplyMappingChange(tmp, &keysyms, stuff->firstKeyCode,

+                              stuff->keyCodes, NULL, client);

+    }

+

+    return Success;

+}

+

+int

+ProcSetPointerMapping(ClientPtr client)

+{

+    BYTE *map;

+    int ret;

+    int i, j;

+    DeviceIntPtr ptr = PickPointer(client);

+    xSetPointerMappingReply rep;

+    REQUEST(xSetPointerMappingReq);

+    REQUEST_AT_LEAST_SIZE(xSetPointerMappingReq);

+

+    if (client->req_len !=

+            bytes_to_int32(sizeof(xSetPointerMappingReq) + stuff->nElts))

+	return BadLength;

+    rep.type = X_Reply;

+    rep.length = 0;

+    rep.sequenceNumber = client->sequence;

+    rep.success = MappingSuccess;

+    map = (BYTE *)&stuff[1];

+

+    /* So we're bounded here by the number of core buttons.  This check

+     * probably wants disabling through XFixes. */

+    /* MPX: With ClientPointer, we can return the right number of buttons.

+     * Let's just hope nobody changed ClientPointer between GetPointerMapping

+     * and SetPointerMapping

+     */

+    if (stuff->nElts != ptr->button->numButtons) {

+	client->errorValue = stuff->nElts;

+	return BadValue;

+    }

+

+    /* Core protocol specs don't allow for duplicate mappings; this check

+     * almost certainly wants disabling through XFixes too. */

+    for (i = 0; i < stuff->nElts; i++) {

+        for (j = i + 1; j < stuff->nElts; j++) {

+            if (map[i] && map[i] == map[j]) {

+                client->errorValue = map[i];

+                return BadValue;

+            }

+        }

+    }

+

+    ret = ApplyPointerMapping(ptr, map, stuff->nElts, client);

+    if (ret == MappingBusy)

+        rep.success = ret;

+    else if (ret == -1)

+        return BadValue;

+    else if (ret != Success)

+        return ret;

+

+    WriteReplyToClient(client, sizeof(xSetPointerMappingReply), &rep);

+    return Success;

+}

+

+int

+ProcGetKeyboardMapping(ClientPtr client)

+{

+    xGetKeyboardMappingReply rep;

+    DeviceIntPtr kbd = PickKeyboard(client);

+    XkbDescPtr xkb;

+    KeySymsPtr syms;

+    int rc;

+    REQUEST(xGetKeyboardMappingReq);

+    REQUEST_SIZE_MATCH(xGetKeyboardMappingReq);

+

+    rc = XaceHook(XACE_DEVICE_ACCESS, client, kbd, DixGetAttrAccess);

+    if (rc != Success)

+	return rc;

+

+    xkb = kbd->key->xkbInfo->desc;

+

+    if ((stuff->firstKeyCode < xkb->min_key_code) ||

+        (stuff->firstKeyCode > xkb->max_key_code)) {

+	client->errorValue = stuff->firstKeyCode;

+	return BadValue;

+    }

+    if (stuff->firstKeyCode + stuff->count > xkb->max_key_code + 1) {

+	client->errorValue = stuff->count;

+        return BadValue;

+    }

+

+    syms = XkbGetCoreMap(kbd);

+    if (!syms)

+        return BadAlloc;

+

+    memset(&rep, 0, sizeof(xGetKeyboardMappingReply));

+    rep.type = X_Reply;

+    rep.sequenceNumber = client->sequence;

+    rep.keySymsPerKeyCode = syms->mapWidth;

+    /* length is a count of 4 byte quantities and KeySyms are 4 bytes */

+    rep.length = syms->mapWidth * stuff->count;

+    WriteReplyToClient(client, sizeof(xGetKeyboardMappingReply), &rep);

+    client->pSwapReplyFunc = (ReplySwapPtr) CopySwap32Write;

+    WriteSwappedDataToClient(client,

+                             syms->mapWidth * stuff->count * sizeof(KeySym),

+                             &syms->map[syms->mapWidth * (stuff->firstKeyCode -

+                                                          syms->minKeyCode)]);

+    free(syms->map);

+    free(syms);

+

+    return Success;

+}

+

+int

+ProcGetPointerMapping(ClientPtr client)

+{

+    xGetPointerMappingReply rep;

+    /* Apps may get different values each time they call GetPointerMapping as

+     * the ClientPointer could change. */

+    DeviceIntPtr ptr = PickPointer(client);

+    ButtonClassPtr butc = ptr->button;

+    int rc;

+    REQUEST_SIZE_MATCH(xReq);

+

+    rc = XaceHook(XACE_DEVICE_ACCESS, client, ptr, DixGetAttrAccess);

+    if (rc != Success)

+	return rc;

+

+    rep.type = X_Reply;

+    rep.sequenceNumber = client->sequence;

+    rep.nElts = (butc) ? butc->numButtons : 0;

+    rep.length = ((unsigned)rep.nElts + (4-1))/4;

+    WriteReplyToClient(client, sizeof(xGetPointerMappingReply), &rep);

+    if (butc)

+        WriteToClient(client, (int)rep.nElts, (char *)&butc->map[1]);

+    return Success;

+}

+

+void

+NoteLedState(DeviceIntPtr keybd, int led, Bool on)

+{

+    KeybdCtrl *ctrl = &keybd->kbdfeed->ctrl;

+    if (on)

+	ctrl->leds |= ((Leds)1 << (led - 1));

+    else

+	ctrl->leds &= ~((Leds)1 << (led - 1));

+}

+

+int

+Ones(unsigned long mask)             /* HACKMEM 169 */

+{

+    unsigned long y;

+

+    y = (mask >> 1) &033333333333;

+    y = mask - y - ((y >>1) & 033333333333);

+    return (((y + (y >> 3)) & 030707070707) % 077);

+}

+

+static int

+DoChangeKeyboardControl (ClientPtr client, DeviceIntPtr keybd, XID *vlist,

+                         BITS32 vmask)

+{

+#define DO_ALL    (-1)

+    KeybdCtrl ctrl;

+    int t;

+    int led = DO_ALL;

+    int key = DO_ALL;

+    BITS32 index2;

+    int mask = vmask, i;

+    XkbEventCauseRec cause;

+

+    ctrl = keybd->kbdfeed->ctrl;

+    while (vmask) {

+	index2 = (BITS32) lowbit (vmask);

+	vmask &= ~index2;

+	switch (index2) {

+	case KBKeyClickPercent:

+	    t = (INT8)*vlist;

+	    vlist++;

+	    if (t == -1) {

+		t = defaultKeyboardControl.click;

+            }

+	    else if (t < 0 || t > 100) {

+		client->errorValue = t;

+		return BadValue;

+	    }

+	    ctrl.click = t;

+	    break;

+	case KBBellPercent:

+	    t = (INT8)*vlist;

+	    vlist++;

+	    if (t == -1) {

+		t = defaultKeyboardControl.bell;

+            }

+	    else if (t < 0 || t > 100) {

+		client->errorValue = t;

+		return BadValue;

+	    }

+	    ctrl.bell = t;

+	    break;

+	case KBBellPitch:

+	    t = (INT16)*vlist;

+	    vlist++;

+	    if (t == -1) {

+		t = defaultKeyboardControl.bell_pitch;

+            }

+	    else if (t < 0) {

+		client->errorValue = t;

+		return BadValue;

+	    }

+	    ctrl.bell_pitch = t;

+	    break;

+	case KBBellDuration:

+	    t = (INT16)*vlist;

+	    vlist++;

+	    if (t == -1)

+		t = defaultKeyboardControl.bell_duration;

+	    else if (t < 0) {

+		client->errorValue = t;

+		return BadValue;

+	    }

+	    ctrl.bell_duration = t;

+	    break;

+	case KBLed:

+	    led = (CARD8)*vlist;

+	    vlist++;

+	    if (led < 1 || led > 32) {

+		client->errorValue = led;

+		return BadValue;

+	    }

+	    if (!(mask & KBLedMode))

+		return BadMatch;

+	    break;

+	case KBLedMode:

+	    t = (CARD8)*vlist;

+	    vlist++;

+	    if (t == LedModeOff) {

+		if (led == DO_ALL)

+		    ctrl.leds = 0x0;

+		else

+		    ctrl.leds &= ~(((Leds)(1)) << (led - 1));

+	    }

+	    else if (t == LedModeOn) {

+		if (led == DO_ALL)

+		    ctrl.leds = ~0L;

+		else

+		    ctrl.leds |= (((Leds)(1)) << (led - 1));

+	    }

+	    else {

+		client->errorValue = t;

+		return BadValue;

+	    }

+

+            XkbSetCauseCoreReq(&cause,X_ChangeKeyboardControl,client);

+            XkbSetIndicators(keybd,((led == DO_ALL) ? ~0L : (1L<<(led-1))),

+ 			     ctrl.leds, &cause);

+            ctrl.leds = keybd->kbdfeed->ctrl.leds;

+

+	    break;

+	case KBKey:

+	    key = (KeyCode)*vlist;

+	    vlist++;

+	    if ((KeyCode)key < keybd->key->xkbInfo->desc->min_key_code ||

+		(KeyCode)key > keybd->key->xkbInfo->desc->max_key_code) {

+		client->errorValue = key;

+		return BadValue;

+	    }

+	    if (!(mask & KBAutoRepeatMode))

+		return BadMatch;

+	    break;

+	case KBAutoRepeatMode:

+	    i = (key >> 3);

+	    mask = (1 << (key & 7));

+	    t = (CARD8)*vlist;

+	    vlist++;

+            if (key != DO_ALL)

+                XkbDisableComputedAutoRepeats(keybd,key);

+	    if (t == AutoRepeatModeOff) {

+		if (key == DO_ALL)

+		    ctrl.autoRepeat = FALSE;

+		else

+		    ctrl.autoRepeats[i] &= ~mask;

+	    }

+	    else if (t == AutoRepeatModeOn) {

+		if (key == DO_ALL)

+		    ctrl.autoRepeat = TRUE;

+		else

+		    ctrl.autoRepeats[i] |= mask;

+	    }

+	    else if (t == AutoRepeatModeDefault) {

+		if (key == DO_ALL)

+		    ctrl.autoRepeat = defaultKeyboardControl.autoRepeat;

+		else

+		    ctrl.autoRepeats[i] =

+			    (ctrl.autoRepeats[i] & ~mask) |

+			    (defaultKeyboardControl.autoRepeats[i] & mask);

+	    }

+	    else {

+		client->errorValue = t;

+		return BadValue;

+	    }

+	    break;

+	default:

+	    client->errorValue = mask;

+	    return BadValue;

+	}

+    }

+    keybd->kbdfeed->ctrl = ctrl;

+

+    /* The XKB RepeatKeys control and core protocol global autorepeat */

+    /* value are linked	*/

+    XkbSetRepeatKeys(keybd, key, keybd->kbdfeed->ctrl.autoRepeat);

+

+    return Success;

+

+#undef DO_ALL

+}

+

+/**

+ * Changes kbd control on the ClientPointer and all attached SDs.

+ */

+int

+ProcChangeKeyboardControl (ClientPtr client)

+{

+    XID *vlist;

+    BITS32 vmask;

+    int ret = Success, error = Success;

+    DeviceIntPtr pDev = NULL, keyboard;

+    REQUEST(xChangeKeyboardControlReq);

+

+    REQUEST_AT_LEAST_SIZE(xChangeKeyboardControlReq);

+

+    vmask = stuff->mask;

+    vlist = (XID *)&stuff[1];

+

+    if (client->req_len != (sizeof(xChangeKeyboardControlReq)>>2)+Ones(vmask))

+	return BadLength;

+

+    keyboard = PickKeyboard(client);

+

+    for (pDev = inputInfo.devices; pDev; pDev = pDev->next) {

+        if ((pDev == keyboard ||

+	     (!IsMaster(pDev) && GetMaster(pDev, MASTER_KEYBOARD) == keyboard))

+	    && pDev->kbdfeed && pDev->kbdfeed->CtrlProc) {

+            ret = XaceHook(XACE_DEVICE_ACCESS, client, pDev, DixManageAccess);

+	    if (ret != Success)

+                return ret;

+        }

+    }

+

+    for (pDev = inputInfo.devices; pDev; pDev = pDev->next) {

+        if ((pDev == keyboard ||

+	     (!IsMaster(pDev) && GetMaster(pDev, MASTER_KEYBOARD) == keyboard))

+	    && pDev->kbdfeed && pDev->kbdfeed->CtrlProc) {

+            ret = DoChangeKeyboardControl(client, pDev, vlist, vmask);

+            if (ret != Success)

+                error = ret;

+        }

+    }

+

+    return error;

+}

+

+int

+ProcGetKeyboardControl (ClientPtr client)

+{

+    int rc, i;

+    DeviceIntPtr kbd = PickKeyboard(client);

+    KeybdCtrl *ctrl = &kbd->kbdfeed->ctrl;

+    xGetKeyboardControlReply rep;

+    REQUEST_SIZE_MATCH(xReq);

+

+    rc = XaceHook(XACE_DEVICE_ACCESS, client, kbd, DixGetAttrAccess);

+    if (rc != Success)

+	return rc;

+

+    rep.type = X_Reply;

+    rep.length = 5;

+    rep.sequenceNumber = client->sequence;

+    rep.globalAutoRepeat = ctrl->autoRepeat;

+    rep.keyClickPercent = ctrl->click;

+    rep.bellPercent = ctrl->bell;

+    rep.bellPitch = ctrl->bell_pitch;

+    rep.bellDuration = ctrl->bell_duration;

+    rep.ledMask = ctrl->leds;

+    for (i = 0; i < 32; i++)

+	rep.map[i] = ctrl->autoRepeats[i];

+    WriteReplyToClient(client, sizeof(xGetKeyboardControlReply), &rep);

+    return Success;

+}

+

+int

+ProcBell(ClientPtr client)

+{

+    DeviceIntPtr dev, keybd = PickKeyboard(client);

+    int base = keybd->kbdfeed->ctrl.bell;

+    int newpercent;

+    int rc;

+    REQUEST(xBellReq);

+    REQUEST_SIZE_MATCH(xBellReq);

+

+    if (stuff->percent < -100 || stuff->percent > 100) {

+	client->errorValue = stuff->percent;

+	return BadValue;

+    }

+

+    newpercent = (base * stuff->percent) / 100;

+    if (stuff->percent < 0)

+        newpercent = base + newpercent;

+    else

+	newpercent = base - newpercent + stuff->percent;

+

+    for (dev = inputInfo.devices; dev; dev = dev->next) {

+        if ((dev == keybd ||

+	     (!IsMaster(dev) && GetMaster(dev, MASTER_KEYBOARD) == keybd)) &&

+            dev->kbdfeed && dev->kbdfeed->BellProc) {

+

+	    rc = XaceHook(XACE_DEVICE_ACCESS, client, dev, DixBellAccess);

+	    if (rc != Success)

+		return rc;

+            XkbHandleBell(FALSE, FALSE, dev, newpercent,

+                          &dev->kbdfeed->ctrl, 0, None, NULL, client);

+        }

+    }

+

+    return Success;

+}

+

+int

+ProcChangePointerControl(ClientPtr client)

+{

+    DeviceIntPtr dev, mouse = PickPointer(client);

+    PtrCtrl ctrl;		/* might get BadValue part way through */

+    int rc;

+    REQUEST(xChangePointerControlReq);

+    REQUEST_SIZE_MATCH(xChangePointerControlReq);

+

+    ctrl = mouse->ptrfeed->ctrl;

+    if ((stuff->doAccel != xTrue) && (stuff->doAccel != xFalse)) {

+	client->errorValue = stuff->doAccel;

+	return BadValue;

+    }

+    if ((stuff->doThresh != xTrue) && (stuff->doThresh != xFalse)) {

+	client->errorValue = stuff->doThresh;

+	return BadValue;

+    }

+    if (stuff->doAccel) {

+	if (stuff->accelNum == -1) {

+	    ctrl.num = defaultPointerControl.num;

+        }

+	else if (stuff->accelNum < 0) {

+	    client->errorValue = stuff->accelNum;

+	    return BadValue;

+	}

+	else {

+            ctrl.num = stuff->accelNum;

+        }

+

+	if (stuff->accelDenum == -1) {

+	    ctrl.den = defaultPointerControl.den;

+        }

+	else if (stuff->accelDenum <= 0) {

+	    client->errorValue = stuff->accelDenum;

+	    return BadValue;

+	}

+	else {

+            ctrl.den = stuff->accelDenum;

+        }

+    }

+    if (stuff->doThresh) {

+	if (stuff->threshold == -1) {

+	    ctrl.threshold = defaultPointerControl.threshold;

+        }

+	else if (stuff->threshold < 0) {

+	    client->errorValue = stuff->threshold;

+	    return BadValue;

+	}

+	else {

+            ctrl.threshold = stuff->threshold;

+        }

+    }

+

+    for (dev = inputInfo.devices; dev; dev = dev->next) {

+        if ((dev == mouse ||

+	     (!IsMaster(dev) && GetMaster(dev, MASTER_POINTER) == mouse)) &&

+            dev->ptrfeed) {

+	    rc = XaceHook(XACE_DEVICE_ACCESS, client, dev, DixManageAccess);

+	    if (rc != Success)

+		return rc;

+	}

+    }

+

+    for (dev = inputInfo.devices; dev; dev = dev->next) {

+        if ((dev == mouse ||

+	     (!IsMaster(dev) && GetMaster(dev, MASTER_POINTER) == mouse)) &&

+            dev->ptrfeed) {

+            dev->ptrfeed->ctrl = ctrl;

+        }

+    }

+

+    return Success;

+}

+

+int

+ProcGetPointerControl(ClientPtr client)

+{

+    DeviceIntPtr ptr = PickPointer(client);

+    PtrCtrl *ctrl = &ptr->ptrfeed->ctrl;

+    xGetPointerControlReply rep;

+    int rc;

+    REQUEST_SIZE_MATCH(xReq);

+

+    rc = XaceHook(XACE_DEVICE_ACCESS, client, ptr, DixGetAttrAccess);

+    if (rc != Success)

+	return rc;

+

+    rep.type = X_Reply;

+    rep.length = 0;

+    rep.sequenceNumber = client->sequence;

+    rep.threshold = ctrl->threshold;

+    rep.accelNumerator = ctrl->num;

+    rep.accelDenominator = ctrl->den;

+    WriteReplyToClient(client, sizeof(xGenericReply), &rep);

+    return Success;

+}

+

+void

+MaybeStopHint(DeviceIntPtr dev, ClientPtr client)

+{

+    GrabPtr grab = dev->deviceGrab.grab;

+

+    if ((grab && SameClient(grab, client) &&

+	 ((grab->eventMask & PointerMotionHintMask) ||

+	  (grab->ownerEvents &&

+	   (EventMaskForClient(dev->valuator->motionHintWindow, client) &

+	    PointerMotionHintMask)))) ||

+	(!grab &&

+	 (EventMaskForClient(dev->valuator->motionHintWindow, client) &

+	  PointerMotionHintMask)))

+	dev->valuator->motionHintWindow = NullWindow;

+}

+

+int

+ProcGetMotionEvents(ClientPtr client)

+{

+    WindowPtr pWin;

+    xTimecoord * coords = (xTimecoord *) NULL;

+    xGetMotionEventsReply rep;

+    int i, count, xmin, xmax, ymin, ymax, rc;

+    unsigned long nEvents;

+    DeviceIntPtr mouse = PickPointer(client);

+    TimeStamp start, stop;

+    REQUEST(xGetMotionEventsReq);

+    REQUEST_SIZE_MATCH(xGetMotionEventsReq);

+

+    rc = dixLookupWindow(&pWin, stuff->window, client, DixGetAttrAccess);

+    if (rc != Success)

+	return rc;

+    rc = XaceHook(XACE_DEVICE_ACCESS, client, mouse, DixReadAccess);

+    if (rc != Success)

+	return rc;

+

+    if (mouse->valuator->motionHintWindow)

+	MaybeStopHint(mouse, client);

+    rep.type = X_Reply;

+    rep.sequenceNumber = client->sequence;

+    nEvents = 0;

+    start = ClientTimeToServerTime(stuff->start);

+    stop = ClientTimeToServerTime(stuff->stop);

+    if ((CompareTimeStamps(start, stop) != LATER) &&

+	(CompareTimeStamps(start, currentTime) != LATER) &&

+	mouse->valuator->numMotionEvents)

+    {

+	if (CompareTimeStamps(stop, currentTime) == LATER)

+	    stop = currentTime;

+	count = GetMotionHistory(mouse, &coords, start.milliseconds,

+				 stop.milliseconds, pWin->drawable.pScreen,

+                                 TRUE);

+	xmin = pWin->drawable.x - wBorderWidth (pWin);

+	xmax = pWin->drawable.x + (int)pWin->drawable.width +

+		wBorderWidth (pWin);

+	ymin = pWin->drawable.y - wBorderWidth (pWin);

+	ymax = pWin->drawable.y + (int)pWin->drawable.height +

+		wBorderWidth (pWin);

+	for (i = 0; i < count; i++)

+	    if ((xmin <= coords[i].x) && (coords[i].x < xmax) &&

+		    (ymin <= coords[i].y) && (coords[i].y < ymax))

+	    {

+		coords[nEvents].time = coords[i].time;

+		coords[nEvents].x = coords[i].x - pWin->drawable.x;

+		coords[nEvents].y = coords[i].y - pWin->drawable.y;

+		nEvents++;

+	    }

+    }

+    rep.length = nEvents * bytes_to_int32(sizeof(xTimecoord));

+    rep.nEvents = nEvents;

+    WriteReplyToClient(client, sizeof(xGetMotionEventsReply), &rep);

+    if (nEvents)

+    {

+	client->pSwapReplyFunc = (ReplySwapPtr) SwapTimeCoordWrite;

+	WriteSwappedDataToClient(client, nEvents * sizeof(xTimecoord),

+				 (char *)coords);

+    }

+    free(coords);

+    return Success;

+}

+

+int

+ProcQueryKeymap(ClientPtr client)

+{

+    xQueryKeymapReply rep;

+    int rc, i;

+    DeviceIntPtr keybd = PickKeyboard(client);

+    CARD8 *down = keybd->key->down;

+

+    REQUEST_SIZE_MATCH(xReq);

+    rep.type = X_Reply;

+    rep.sequenceNumber = client->sequence;

+    rep.length = 2;

+

+    rc = XaceHook(XACE_DEVICE_ACCESS, client, keybd, DixReadAccess);

+    if (rc != Success && rc != BadAccess)

+	return rc;

+

+    for (i = 0; i<32; i++)

+	rep.map[i] = down[i];

+

+    if (rc == BadAccess)

+	memset(rep.map, 0, 32);

+

+    WriteReplyToClient(client, sizeof(xQueryKeymapReply), &rep);

+

+   return Success;

+}

+

+

+/**

+ * Recalculate the number of buttons for the master device. The number of

+ * buttons on the master device is equal to the number of buttons on the

+ * slave device with the highest number of buttons.

+ */

+static void

+RecalculateMasterButtons(DeviceIntPtr slave)

+{

+    DeviceIntPtr dev, master;

+    int maxbuttons = 0;

+

+    if (!slave->button || IsMaster(slave))

+        return;

+

+    master = GetMaster(slave, MASTER_POINTER);

+    if (!master)

+        return;

+

+    for (dev = inputInfo.devices; dev; dev = dev->next)

+    {

+        if (IsMaster(dev) ||

+            GetMaster(dev, MASTER_ATTACHED) != master ||

+            !dev->button)

+            continue;

+

+        maxbuttons = max(maxbuttons, dev->button->numButtons);

+    }

+

+    if (master->button && master->button->numButtons != maxbuttons)

+    {

+        int i;

+        DeviceChangedEvent event;

+

+        memset(&event, 0, sizeof(event));

+

+        master->button->numButtons = maxbuttons;

+

+        event.header = ET_Internal;

+        event.type = ET_DeviceChanged;

+        event.time = GetTimeInMillis();

+        event.deviceid = master->id;

+        event.flags = DEVCHANGE_POINTER_EVENT | DEVCHANGE_DEVICE_CHANGE;

+        event.buttons.num_buttons = maxbuttons;

+        memcpy(&event.buttons.names, master->button->labels, maxbuttons *

+                sizeof(Atom));

+

+        if (master->valuator)

+        {

+            event.num_valuators = master->valuator->numAxes;

+            for (i = 0; i < event.num_valuators; i++)

+            {

+                event.valuators[i].min = master->valuator->axes[i].min_value;

+                event.valuators[i].max = master->valuator->axes[i].max_value;

+                event.valuators[i].resolution = master->valuator->axes[i].resolution;

+                event.valuators[i].mode = master->valuator->axes[i].mode;

+                event.valuators[i].name = master->valuator->axes[i].label;

+            }

+        }

+

+        if (master->key)

+        {

+            event.keys.min_keycode = master->key->xkbInfo->desc->min_key_code;

+            event.keys.max_keycode = master->key->xkbInfo->desc->max_key_code;

+        }

+

+        XISendDeviceChangedEvent(master, master, &event);

+    }

+}

+

+/**

+ * Generate release events for all keys/button currently down on this

+ * device.

+ */

+static void

+ReleaseButtonsAndKeys(DeviceIntPtr dev)

+{

+    EventListPtr        eventlist = InitEventList(GetMaximumEventsNum());

+    ButtonClassPtr      b = dev->button;

+    KeyClassPtr         k = dev->key;

+    int                 i, j, nevents;

+

+    if (!eventlist) /* no release events for you */

+        return;

+

+    /* Release all buttons */

+    for (i = 0; b && i < b->numButtons; i++)

+    {

+        if (BitIsOn(b->down, i))

+        {

+            nevents = GetPointerEvents(eventlist, dev, ButtonRelease, i, 0, NULL);

+            for (j = 0; j < nevents; j++)

+                mieqProcessDeviceEvent(dev, (InternalEvent*)(eventlist+j)->event, NULL);

+        }

+    }

+

+    /* Release all keys */

+    for (i = 0; k && i < MAP_LENGTH; i++)

+    {

+        if (BitIsOn(k->down, i))

+        {

+            nevents = GetKeyboardEvents(eventlist, dev, KeyRelease, i);

+            for (j = 0; j < nevents; j++)

+                mieqProcessDeviceEvent(dev, (InternalEvent*)(eventlist+j)->event, NULL);

+        }

+    }

+

+    FreeEventList(eventlist, GetMaximumEventsNum());

+}

+

+/**

+ * Attach device 'dev' to device 'master'.

+ * Client is set to the client that issued the request, or NULL if it comes

+ * from some internal automatic pairing.

+ *

+ * Master may be NULL to set the device floating.

+ *

+ * We don't allow multi-layer hierarchies right now. You can't attach a slave

+ * to another slave.

+ */

+int

+AttachDevice(ClientPtr client, DeviceIntPtr dev, DeviceIntPtr master)

+{

+    ScreenPtr screen;

+    DeviceIntPtr oldmaster;

+    if (!dev || IsMaster(dev))

+        return BadDevice;

+

+    if (master && !IsMaster(master)) /* can't attach to slaves */

+        return BadDevice;

+

+    /* set from floating to floating? */

+    if (IsFloating(dev) && !master && dev->enabled)

+        return Success;

+

+    /* free the existing sprite. */

+    if (IsFloating(dev) && dev->spriteInfo->paired == dev)

+    {

+        screen = miPointerGetScreen(dev);

+        screen->DeviceCursorCleanup(dev, screen);

+        free(dev->spriteInfo->sprite);

+    }

+

+    ReleaseButtonsAndKeys(dev);

+

+    oldmaster = GetMaster(dev, MASTER_ATTACHED);

+    dev->master = master;

+

+    /* If device is set to floating, we need to create a sprite for it,

+     * otherwise things go bad. However, we don't want to render the cursor,

+     * so we reset spriteOwner.

+     * Sprite has to be forced to NULL first, otherwise InitializeSprite won't

+     * alloc new memory but overwrite the previous one.

+     */

+    if (!master)

+    {

+        WindowPtr currentRoot;

+

+        if (dev->spriteInfo->sprite)

+            currentRoot = GetCurrentRootWindow(dev);

+        else /* new device auto-set to floating */

+            currentRoot = screenInfo.screens[0]->root;

+

+        /* we need to init a fake sprite */

+        screen = currentRoot->drawable.pScreen;

+        screen->DeviceCursorInitialize(dev, screen);

+        dev->spriteInfo->sprite = NULL;

+        InitializeSprite(dev, currentRoot);

+        dev->spriteInfo->spriteOwner = FALSE;

+        dev->spriteInfo->paired = dev;

+    } else

+    {

+        dev->spriteInfo->sprite = master->spriteInfo->sprite;

+        dev->spriteInfo->paired = master;

+        dev->spriteInfo->spriteOwner = FALSE;

+

+        RecalculateMasterButtons(master);

+    }

+

+    /* XXX: in theory, the MD should change back to its old, original

+     * classes when the last SD is detached. Thanks to the XTEST devices,

+     * we'll always have an SD attached until the MD is removed.

+     * So let's not worry about that.

+     */

+

+    return Success;

+}

+

+/**

+ * Return the device paired with the given device or NULL.

+ * Returns the device paired with the parent master if the given device is a

+ * slave device.

+ */

+DeviceIntPtr

+GetPairedDevice(DeviceIntPtr dev)

+{

+    if (!IsMaster(dev) && !IsFloating(dev))

+        dev = GetMaster(dev, MASTER_ATTACHED);

+

+    return dev->spriteInfo->paired;

+}

+

+

+/**

+ * Returns the right master for the type of event needed. If the event is a

+ * keyboard event.

+ * This function may be called with a master device as argument. If so, the

+ * returned master is either the device itself or the paired master device.

+ * If dev is a floating slave device, NULL is returned.

+ *

+ * @type ::MASTER_KEYBOARD or ::MASTER_POINTER or ::MASTER_ATTACHED

+ * @return The requested master device. In the case of MASTER_ATTACHED, this

+ * is the directly attached master to this device, regardless of the type.

+ * Otherwise, it is either the master keyboard or pointer for this device.

+ */

+DeviceIntPtr

+GetMaster(DeviceIntPtr dev, int which)

+{

+    DeviceIntPtr master;

+

+    if (IsMaster(dev))

+        master = dev;

+    else

+        master = dev->master;

+

+    if (master && which != MASTER_ATTACHED)

+    {

+        if (which == MASTER_KEYBOARD)

+        {

+            if (master->type != MASTER_KEYBOARD)

+                master = GetPairedDevice(master);

+        } else

+        {

+            if (master->type != MASTER_POINTER)

+                master = GetPairedDevice(master);

+        }

+    }

+

+    return master;

+}

+

+/**

+ * Create a new device pair (== one pointer, one keyboard device).

+ * Only allocates the devices, you will need to call ActivateDevice() and

+ * EnableDevice() manually.

+ * Either a master or a slave device can be created depending on

+ * the value for master.

+ */

+int

+AllocDevicePair (ClientPtr client, char* name,

+                 DeviceIntPtr* ptr,

+                 DeviceIntPtr* keybd,

+                 DeviceProc ptr_proc,

+                 DeviceProc keybd_proc,

+                 Bool master)

+{

+    DeviceIntPtr pointer;

+    DeviceIntPtr keyboard;

+    *ptr = *keybd = NULL;

+

+    pointer = AddInputDevice(client, ptr_proc, TRUE);

+    if (!pointer)

+        return BadAlloc;

+

+    if (asprintf(&pointer->name, "%s pointer", name) == -1) {

+        pointer->name = NULL;

+        RemoveDevice(pointer, FALSE);

+        return BadAlloc;

+    }

+

+    pointer->public.processInputProc = ProcessOtherEvent;

+    pointer->public.realInputProc = ProcessOtherEvent;

+    XkbSetExtension(pointer, ProcessPointerEvent);

+    pointer->deviceGrab.ActivateGrab = ActivatePointerGrab;

+    pointer->deviceGrab.DeactivateGrab = DeactivatePointerGrab;

+    pointer->coreEvents = TRUE;

+    pointer->spriteInfo->spriteOwner = TRUE;

+

+    pointer->lastSlave = NULL;

+    pointer->last.slave = NULL;

+    pointer->type = (master) ? MASTER_POINTER : SLAVE;

+

+    keyboard = AddInputDevice(client, keybd_proc, TRUE);

+    if (!keyboard)

+    {

+        RemoveDevice(pointer, FALSE);

+        return BadAlloc;

+    }

+

+    if (asprintf(&keyboard->name, "%s keyboard", name) == -1) {

+        keyboard->name = NULL;

+        RemoveDevice(keyboard, FALSE);

+        RemoveDevice(pointer, FALSE);

+        return BadAlloc;

+    }

+

+    keyboard->public.processInputProc = ProcessOtherEvent;

+    keyboard->public.realInputProc = ProcessOtherEvent;

+    XkbSetExtension(keyboard, ProcessKeyboardEvent);

+    keyboard->deviceGrab.ActivateGrab = ActivateKeyboardGrab;

+    keyboard->deviceGrab.DeactivateGrab = DeactivateKeyboardGrab;

+    keyboard->coreEvents = TRUE;

+    keyboard->spriteInfo->spriteOwner = FALSE;

+

+    keyboard->lastSlave = NULL;

+    keyboard->last.slave = NULL;

+    keyboard->type = (master) ? MASTER_KEYBOARD : SLAVE;

+

+    /* The ClassesRec stores the device classes currently not used. */

+    pointer->unused_classes = calloc(1, sizeof(ClassesRec));

+    keyboard->unused_classes = calloc(1, sizeof(ClassesRec));

+

+    *ptr = pointer;

+    *keybd = keyboard;

+

+    return Success;

+}

+

+/**

+ * Return Relative or Absolute for the device.

+ */

+int valuator_get_mode(DeviceIntPtr dev, int axis)

+{

+    return (dev->valuator->axes[axis].mode & DeviceMode);

+}

+

+/**

+ * Set the given mode for the axis. If axis is VALUATOR_MODE_ALL_AXES, then

+ * set the mode for all axes.

+ */

+void valuator_set_mode(DeviceIntPtr dev, int axis, int mode)

+{

+    if (axis != VALUATOR_MODE_ALL_AXES)

+        dev->valuator->axes[axis].mode = mode;

+    else {

+        int i;

+        for (i = 0; i < dev->valuator->numAxes; i++)

+            dev->valuator->axes[i].mode = mode;

+    }

+}

diff --git a/xorg-server/dix/eventconvert.c b/xorg-server/dix/eventconvert.c
index 760729beb..d5ac54796 100644
--- a/xorg-server/dix/eventconvert.c
+++ b/xorg-server/dix/eventconvert.c
@@ -1,767 +1,770 @@
-/*
- * Copyright © 2009 Red Hat, Inc.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice (including the next
- * paragraph) shall be included in all copies or substantial portions of the
- * Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
- * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
- * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
- * DEALINGS IN THE SOFTWARE.
- *
- */
-
-/**
- * @file eventconvert.c
- * This file contains event conversion routines from InternalEvent to the
- * matching protocol events.
- */
-
-#ifdef HAVE_DIX_CONFIG_H
-#include <dix-config.h>
-#endif
-
-#include <stdint.h>
-#include <X11/X.h>
-#include <X11/extensions/XIproto.h>
-#include <X11/extensions/XI2proto.h>
-#include <X11/extensions/XI.h>
-#include <X11/extensions/XI2.h>
-
-#include "dix.h"
-#include "inputstr.h"
-#include "misc.h"
-#include "eventstr.h"
-#include "exglobals.h"
-#include "eventconvert.h"
-#include "xiquerydevice.h"
-#include "xkbsrv.h"
-
-
-static int countValuators(DeviceEvent *ev, int *first);
-static int getValuatorEvents(DeviceEvent *ev, deviceValuator *xv);
-static int eventToKeyButtonPointer(DeviceEvent *ev, xEvent **xi, int *count);
-static int eventToDeviceChanged(DeviceChangedEvent *ev, xEvent **dcce);
-static int eventToDeviceEvent(DeviceEvent *ev, xEvent **xi);
-static int eventToRawEvent(RawDeviceEvent *ev, xEvent **xi);
-
-/* Do not use, read comments below */
-BOOL EventIsKeyRepeat(xEvent *event);
-
-/**
- * Hack to allow detectable autorepeat for core and XI1 events.
- * The sequence number is unused until we send to the client and can be
- * misused to store data. More or less, anyway.
- *
- * Do not use this. It may change any time without warning, eat your babies
- * and piss on your cat.
- */
-static void
-EventSetKeyRepeatFlag(xEvent *event, BOOL on)
-{
-    event->u.u.sequenceNumber = on;
-}
-
-/**
- * Check if the event was marked as a repeat event before.
- * NOTE: This is a nasty hack and should NOT be used by anyone else but
- * TryClientEvents.
- */
-BOOL
-EventIsKeyRepeat(xEvent *event)
-{
-    return !!event->u.u.sequenceNumber;
-}
-
-/**
- * Convert the given event to the respective core event.
- *
- * Return values:
- * Success ... core contains the matching core event.
- * BadValue .. One or more values in the internal event are invalid.
- * BadMatch .. The event has no core equivalent.
- *
- * @param[in] event The event to convert into a core event.
- * @param[in] core The memory location to store the core event at.
- * @return Success or the matching error code.
- */
-int
-EventToCore(InternalEvent *event, xEvent **core_out, int *count_out)
-{
-    xEvent *core = NULL;
-    int count = 0;
-    int ret = BadImplementation;
-
-    switch(event->any.type)
-    {
-        case ET_Motion:
-            {
-                DeviceEvent *e = &event->device_event;
-                /* Don't create core motion event if neither x nor y are
-                 * present */
-                if (!BitIsOn(e->valuators.mask, 0) &&
-                    !BitIsOn(e->valuators.mask, 1))
-                {
-                    ret = BadMatch;
-                    goto out;
-                }
-            }
-            /* fallthrough */
-        case ET_ButtonPress:
-        case ET_ButtonRelease:
-        case ET_KeyPress:
-        case ET_KeyRelease:
-            {
-                DeviceEvent *e = &event->device_event;
-
-                if (e->detail.key > 0xFF)
-                {
-                    ret = BadMatch;
-                    goto out;
-                }
-
-                core = calloc(1, sizeof(*core));
-                if (!core)
-                    return BadAlloc;
-                count = 1;
-                core->u.u.type = e->type - ET_KeyPress + KeyPress;
-                core->u.u.detail = e->detail.key & 0xFF;
-                core->u.keyButtonPointer.time = e->time;
-                core->u.keyButtonPointer.rootX = e->root_x;
-                core->u.keyButtonPointer.rootY = e->root_y;
-                core->u.keyButtonPointer.state = e->corestate;
-                core->u.keyButtonPointer.root = e->root;
-                EventSetKeyRepeatFlag(core,
-                                      (e->type == ET_KeyPress &&
-                                       e->key_repeat));
-                ret = Success;
-            }
-            break;
-        case ET_ProximityIn:
-        case ET_ProximityOut:
-        case ET_RawKeyPress:
-        case ET_RawKeyRelease:
-        case ET_RawButtonPress:
-        case ET_RawButtonRelease:
-        case ET_RawMotion:
-            ret = BadMatch;
-            goto out;
-        default:
-            /* XXX: */
-            ErrorF("[dix] EventToCore: Not implemented yet \n");
-            ret = BadImplementation;
-    }
-
-out:
-    *core_out = core;
-    *count_out = count;
-    return ret;
-}
-
-/**
- * Convert the given event to the respective XI 1.x event and store it in
- * xi. xi is allocated on demand and must be freed by the caller.
- * count returns the number of events in xi. If count is 1, and the type of
- * xi is GenericEvent, then xi may be larger than 32 bytes.
- *
- * Return values:
- * Success ... core contains the matching core event.
- * BadValue .. One or more values in the internal event are invalid.
- * BadMatch .. The event has no XI equivalent.
- *
- * @param[in] ev The event to convert into an XI 1 event.
- * @param[out] xi Future memory location for the XI event.
- * @param[out] count Number of elements in xi.
- *
- * @return Success or the error code.
- */
-int
-EventToXI(InternalEvent *ev, xEvent **xi, int *count)
-{
-    switch (ev->any.type)
-    {
-        case ET_Motion:
-        case ET_ButtonPress:
-        case ET_ButtonRelease:
-        case ET_KeyPress:
-        case ET_KeyRelease:
-        case ET_ProximityIn:
-        case ET_ProximityOut:
-            return eventToKeyButtonPointer(&ev->device_event, xi, count);
-        case ET_DeviceChanged:
-        case ET_RawKeyPress:
-        case ET_RawKeyRelease:
-        case ET_RawButtonPress:
-        case ET_RawButtonRelease:
-        case ET_RawMotion:
-            *count = 0;
-            *xi = NULL;
-            return BadMatch;
-        default:
-            break;
-    }
-
-    ErrorF("[dix] EventToXI: Not implemented for %d \n", ev->any.type);
-    return BadImplementation;
-}
-
-/**
- * Convert the given event to the respective XI 2.x event and store it in xi.
- * xi is allocated on demand and must be freed by the caller.
- *
- * Return values:
- * Success ... core contains the matching core event.
- * BadValue .. One or more values in the internal event are invalid.
- * BadMatch .. The event has no XI2 equivalent.
- *
- * @param[in] ev The event to convert into an XI2 event
- * @param[out] xi Future memory location for the XI2 event.
- *
- * @return Success or the error code.
- */
-int
-EventToXI2(InternalEvent *ev, xEvent **xi)
-{
-    switch (ev->any.type)
-    {
-        /* Enter/FocusIn are for grabs. We don't need an actual event, since
-         * the real events delivered are triggered elsewhere */
-        case ET_Enter:
-        case ET_FocusIn:
-            *xi = NULL;
-            return Success;
-        case ET_Motion:
-        case ET_ButtonPress:
-        case ET_ButtonRelease:
-        case ET_KeyPress:
-        case ET_KeyRelease:
-            return eventToDeviceEvent(&ev->device_event, xi);
-        case ET_ProximityIn:
-        case ET_ProximityOut:
-            *xi = NULL;
-            return BadMatch;
-        case ET_DeviceChanged:
-            return eventToDeviceChanged(&ev->changed_event, xi);
-        case ET_RawKeyPress:
-        case ET_RawKeyRelease:
-        case ET_RawButtonPress:
-        case ET_RawButtonRelease:
-        case ET_RawMotion:
-            return eventToRawEvent(&ev->raw_event, xi);
-        default:
-            break;
-    }
-
-    ErrorF("[dix] EventToXI2: Not implemented for %d \n", ev->any.type);
-    return BadImplementation;
-}
-
-static int
-eventToKeyButtonPointer(DeviceEvent *ev, xEvent **xi, int *count)
-{
-    int num_events;
-    int first; /* dummy */
-    deviceKeyButtonPointer *kbp;
-
-    /* Sorry, XI 1.x protocol restrictions. */
-    if (ev->detail.button > 0xFF || ev->deviceid >= 0x80)
-    {
-        *count = 0;
-        return Success;
-    }
-
-    num_events = (countValuators(ev, &first) + 5)/6; /* valuator ev */
-    if (num_events <= 0)
-    {
-        switch (ev->type)
-        {
-            case ET_KeyPress:
-            case ET_KeyRelease:
-            case ET_ButtonPress:
-            case ET_ButtonRelease:
-                /* no axes is ok */
-                break;
-            case ET_Motion:
-            case ET_ProximityIn:
-            case ET_ProximityOut:
-                *count = 0;
-                return BadMatch;
-        }
-    }
-
-    num_events++; /* the actual event event */
-
-    *xi = calloc(num_events, sizeof(xEvent));
-    if (!(*xi))
-    {
-        return BadAlloc;
-    }
-
-    kbp           = (deviceKeyButtonPointer*)(*xi);
-    kbp->detail   = ev->detail.button;
-    kbp->time     = ev->time;
-    kbp->root     = ev->root;
-    kbp->root_x   = ev->root_x;
-    kbp->root_y   = ev->root_y;
-    kbp->deviceid = ev->deviceid;
-    kbp->state    = ev->corestate;
-    EventSetKeyRepeatFlag((xEvent*)kbp,
-                          (ev->type == ET_KeyPress && ev->key_repeat));
-
-    if (num_events > 1)
-        kbp->deviceid |= MORE_EVENTS;
-
-    switch(ev->type)
-    {
-        case ET_Motion:        kbp->type = DeviceMotionNotify;  break;
-        case ET_ButtonPress:   kbp->type = DeviceButtonPress;   break;
-        case ET_ButtonRelease: kbp->type = DeviceButtonRelease; break;
-        case ET_KeyPress:      kbp->type = DeviceKeyPress;      break;
-        case ET_KeyRelease:    kbp->type = DeviceKeyRelease;    break;
-        case ET_ProximityIn:   kbp->type = ProximityIn;         break;
-        case ET_ProximityOut:  kbp->type = ProximityOut;        break;
-        default:
-            break;
-    }
-
-    if (num_events > 1)
-    {
-        getValuatorEvents(ev, (deviceValuator*)(kbp + 1));
-    }
-
-    *count = num_events;
-    return Success;
-}
-
-
-/**
- * Set first to the first valuator in the event ev and return the number of
- * valuators from first to the last set valuator.
- */
-static int
-countValuators(DeviceEvent *ev, int *first)
-{
-    int first_valuator = -1, last_valuator = -1, num_valuators = 0;
-    int i;
-
-    for (i = 0; i < sizeof(ev->valuators.mask) * 8; i++)
-    {
-        if (BitIsOn(ev->valuators.mask, i))
-        {
-            if (first_valuator == -1)
-                first_valuator = i;
-            last_valuator = i;
-        }
-    }
-
-    if (first_valuator != -1)
-    {
-        num_valuators = last_valuator - first_valuator + 1;
-        *first = first_valuator;
-    }
-
-    return num_valuators;
-}
-
-static int
-getValuatorEvents(DeviceEvent *ev, deviceValuator *xv)
-{
-    int i;
-    int state = 0;
-    int first_valuator, num_valuators;
-
-
-    num_valuators = countValuators(ev, &first_valuator);
-    if (num_valuators > 0)
-    {
-        DeviceIntPtr dev = NULL;
-        dixLookupDevice(&dev, ev->deviceid, serverClient, DixUseAccess);
-        /* State needs to be assembled BEFORE the device is updated. */
-        state = (dev && dev->key) ? XkbStateFieldFromRec(&dev->key->xkbInfo->state) : 0;
-        state |= (dev && dev->button) ? (dev->button->state) : 0;
-    }
-
-    /* FIXME: non-continuous valuator data in internal events*/
-    for (i = 0; i < num_valuators; i += 6, xv++) {
-        xv->type = DeviceValuator;
-        xv->first_valuator = first_valuator + i;
-        xv->num_valuators = ((num_valuators - i) > 6) ? 6 : (num_valuators - i);
-        xv->deviceid = ev->deviceid;
-        xv->device_state = state;
-        switch (xv->num_valuators) {
-        case 6:
-            xv->valuator5 = ev->valuators.data[xv->first_valuator + 5];
-        case 5:
-            xv->valuator4 = ev->valuators.data[xv->first_valuator + 4];
-        case 4:
-            xv->valuator3 = ev->valuators.data[xv->first_valuator + 3];
-        case 3:
-            xv->valuator2 = ev->valuators.data[xv->first_valuator + 2];
-        case 2:
-            xv->valuator1 = ev->valuators.data[xv->first_valuator + 1];
-        case 1:
-            xv->valuator0 = ev->valuators.data[xv->first_valuator + 0];
-        }
-
-        if (i + 6 < num_valuators)
-            xv->deviceid |= MORE_EVENTS;
-    }
-
-    return (num_valuators + 5) / 6;
-}
-
-
-static int
-appendKeyInfo(DeviceChangedEvent *dce, xXIKeyInfo* info)
-{
-    uint32_t *kc;
-    int i;
-
-    info->type = XIKeyClass;
-    info->num_keycodes = dce->keys.max_keycode - dce->keys.min_keycode + 1;
-    info->length = sizeof(xXIKeyInfo)/4 + info->num_keycodes;
-    info->sourceid = dce->sourceid;
-
-    kc = (uint32_t*)&info[1];
-    for (i = 0; i < info->num_keycodes; i++)
-        *kc++ = i + dce->keys.min_keycode;
-
-    return info->length * 4;
-}
-
-static int
-appendButtonInfo(DeviceChangedEvent *dce, xXIButtonInfo *info)
-{
-    unsigned char *bits;
-    int mask_len;
-
-    mask_len = bytes_to_int32(bits_to_bytes(dce->buttons.num_buttons));
-
-    info->type = XIButtonClass;
-    info->num_buttons = dce->buttons.num_buttons;
-    info->length = bytes_to_int32(sizeof(xXIButtonInfo)) +
-                   info->num_buttons + mask_len;
-    info->sourceid = dce->sourceid;
-
-    bits = (unsigned char*)&info[1];
-    memset(bits, 0, mask_len * 4);
-    /* FIXME: is_down? */
-
-    bits += mask_len * 4;
-    memcpy(bits, dce->buttons.names, dce->buttons.num_buttons * sizeof(Atom));
-
-    return info->length * 4;
-}
-
-static int
-appendValuatorInfo(DeviceChangedEvent *dce, xXIValuatorInfo *info, int axisnumber)
-{
-    info->type = XIValuatorClass;
-    info->length = sizeof(xXIValuatorInfo)/4;
-    info->label = dce->valuators[axisnumber].name;
-    info->min.integral = dce->valuators[axisnumber].min;
-    info->min.frac = 0;
-    info->max.integral = dce->valuators[axisnumber].max;
-    info->max.frac = 0;
-    /* FIXME: value */
-    info->value.integral = 0;
-    info->value.frac = 0;
-    info->resolution = dce->valuators[axisnumber].resolution;
-    info->number = axisnumber;
-    info->mode = dce->valuators[axisnumber].mode;
-    info->sourceid = dce->sourceid;
-
-    return info->length * 4;
-}
-
-static int
-eventToDeviceChanged(DeviceChangedEvent *dce, xEvent **xi)
-{
-    xXIDeviceChangedEvent *dcce;
-    int len = sizeof(xXIDeviceChangedEvent);
-    int nkeys;
-    char *ptr;
-
-    if (dce->buttons.num_buttons)
-    {
-        len += sizeof(xXIButtonInfo);
-        len += dce->buttons.num_buttons * sizeof(Atom); /* button names */
-        len += pad_to_int32(bits_to_bytes(dce->buttons.num_buttons));
-    }
-    if (dce->num_valuators)
-        len += sizeof(xXIValuatorInfo) * dce->num_valuators;
-
-    nkeys = (dce->keys.max_keycode > 0) ?
-                dce->keys.max_keycode - dce->keys.min_keycode + 1 : 0;
-    if (nkeys > 0)
-    {
-        len += sizeof(xXIKeyInfo);
-        len += sizeof(CARD32) * nkeys; /* keycodes */
-    }
-
-    dcce = calloc(1, len);
-    if (!dcce)
-    {
-        ErrorF("[Xi] BadAlloc in SendDeviceChangedEvent.\n");
-        return BadAlloc;
-    }
-
-    dcce->type         = GenericEvent;
-    dcce->extension    = IReqCode;
-    dcce->evtype       = XI_DeviceChanged;
-    dcce->time         = dce->time;
-    dcce->deviceid     = dce->deviceid;
-    dcce->sourceid     = dce->sourceid;
-    dcce->reason       = (dce->flags & DEVCHANGE_DEVICE_CHANGE) ? XIDeviceChange : XISlaveSwitch;
-    dcce->num_classes  = 0;
-    dcce->length = bytes_to_int32(len - sizeof(xEvent));
-
-    ptr = (char*)&dcce[1];
-    if (dce->buttons.num_buttons)
-    {
-        dcce->num_classes++;
-        ptr += appendButtonInfo(dce, (xXIButtonInfo*)ptr);
-    }
-
-    if (nkeys)
-    {
-        dcce->num_classes++;
-        ptr += appendKeyInfo(dce, (xXIKeyInfo*)ptr);
-    }
-
-    if (dce->num_valuators)
-    {
-        int i;
-
-        dcce->num_classes += dce->num_valuators;
-        for (i = 0; i < dce->num_valuators; i++)
-            ptr += appendValuatorInfo(dce, (xXIValuatorInfo*)ptr, i);
-    }
-
-    *xi = (xEvent*)dcce;
-
-    return Success;
-}
-
-static int count_bits(unsigned char* ptr, int len)
-{
-    int bits = 0;
-    unsigned int i;
-    unsigned char x;
-
-    for (i = 0; i < len; i++)
-    {
-        x = ptr[i];
-        while(x > 0)
-        {
-            bits += (x & 0x1);
-            x >>= 1;
-        }
-    }
-    return bits;
-}
-
-static int
-eventToDeviceEvent(DeviceEvent *ev, xEvent **xi)
-{
-    int len = sizeof(xXIDeviceEvent);
-    xXIDeviceEvent *xde;
-    int i, btlen, vallen;
-    char *ptr;
-    FP3232 *axisval;
-
-    /* FIXME: this should just send the buttons we have, not MAX_BUTTONs. Same
-     * with MAX_VALUATORS below */
-    /* btlen is in 4 byte units */
-    btlen = bytes_to_int32(bits_to_bytes(MAX_BUTTONS));
-    len += btlen * 4; /* buttonmask len */
-
-
-    vallen = count_bits(ev->valuators.mask, sizeof(ev->valuators.mask)/sizeof(ev->valuators.mask[0]));
-    len += vallen * 2 * sizeof(uint32_t); /* axisvalues */
-    vallen = bytes_to_int32(bits_to_bytes(MAX_VALUATORS));
-    len += vallen * 4; /* valuators mask */
-
-    *xi = calloc(1, len);
-    xde = (xXIDeviceEvent*)*xi;
-    xde->type           = GenericEvent;
-    xde->extension      = IReqCode;
-    xde->evtype         = GetXI2Type((InternalEvent*)ev);
-    xde->time           = ev->time;
-    xde->length         = bytes_to_int32(len - sizeof(xEvent));
-    xde->detail         = ev->detail.button;
-    xde->root           = ev->root;
-    xde->buttons_len    = btlen;
-    xde->valuators_len  = vallen;
-    xde->deviceid       = ev->deviceid;
-    xde->sourceid       = ev->sourceid;
-    xde->root_x         = FP1616(ev->root_x, ev->root_x_frac);
-    xde->root_y         = FP1616(ev->root_y, ev->root_y_frac);
-
-    if (ev->key_repeat)
-        xde->flags      |= XIKeyRepeat;
-
-    xde->mods.base_mods         = ev->mods.base;
-    xde->mods.latched_mods      = ev->mods.latched;
-    xde->mods.locked_mods       = ev->mods.locked;
-    xde->mods.effective_mods    = ev->mods.effective;
-
-    xde->group.base_group       = ev->group.base;
-    xde->group.latched_group    = ev->group.latched;
-    xde->group.locked_group     = ev->group.locked;
-    xde->group.effective_group  = ev->group.effective;
-
-    ptr = (char*)&xde[1];
-    for (i = 0; i < sizeof(ev->buttons) * 8; i++)
-    {
-        if (BitIsOn(ev->buttons, i))
-            SetBit(ptr, i);
-    }
-
-    ptr += xde->buttons_len * 4;
-    axisval = (FP3232*)(ptr + xde->valuators_len * 4);
-    for (i = 0; i < sizeof(ev->valuators.mask) * 8; i++)
-    {
-        if (BitIsOn(ev->valuators.mask, i))
-        {
-            SetBit(ptr, i);
-            axisval->integral = ev->valuators.data[i];
-            axisval->frac = ev->valuators.data_frac[i];
-            axisval++;
-        }
-    }
-
-    return Success;
-}
-
-static int
-eventToRawEvent(RawDeviceEvent *ev, xEvent **xi)
-{
-    xXIRawEvent* raw;
-    int vallen, nvals;
-    int i, len = sizeof(xXIRawEvent);
-    char *ptr;
-    FP3232 *axisval;
-
-    nvals = count_bits(ev->valuators.mask, sizeof(ev->valuators.mask));
-    len += nvals * sizeof(FP3232) * 2; /* 8 byte per valuator, once
-                                    raw, once processed */
-    vallen = bytes_to_int32(bits_to_bytes(MAX_VALUATORS));
-    len += vallen * 4; /* valuators mask */
-
-    *xi = calloc(1, len);
-    raw = (xXIRawEvent*)*xi;
-    raw->type           = GenericEvent;
-    raw->extension      = IReqCode;
-    raw->evtype         = GetXI2Type((InternalEvent*)ev);
-    raw->time           = ev->time;
-    raw->length         = bytes_to_int32(len - sizeof(xEvent));
-    raw->detail         = ev->detail.button;
-    raw->deviceid       = ev->deviceid;
-    raw->valuators_len  = vallen;
-
-    ptr = (char*)&raw[1];
-    axisval = (FP3232*)(ptr + raw->valuators_len * 4);
-    for (i = 0; i < sizeof(ev->valuators.mask) * 8; i++)
-    {
-        if (BitIsOn(ev->valuators.mask, i))
-        {
-            SetBit(ptr, i);
-            axisval->integral = ev->valuators.data[i];
-            axisval->frac = ev->valuators.data_frac[i];
-            (axisval + nvals)->integral = ev->valuators.data_raw[i];
-            (axisval + nvals)->frac = ev->valuators.data_raw_frac[i];
-            axisval++;
-        }
-    }
-
-    return Success;
-}
-
-/**
- * Return the corresponding core type for the given event or 0 if no core
- * equivalent exists.
- */
-int
-GetCoreType(InternalEvent *event)
-{
-    int coretype = 0;
-    switch(event->any.type)
-    {
-        case ET_Motion:         coretype = MotionNotify;  break;
-        case ET_ButtonPress:    coretype = ButtonPress;   break;
-        case ET_ButtonRelease:  coretype = ButtonRelease; break;
-        case ET_KeyPress:       coretype = KeyPress;      break;
-        case ET_KeyRelease:     coretype = KeyRelease;    break;
-        default:
-            break;
-    }
-    return coretype;
-}
-
-/**
- * Return the corresponding XI 1.x type for the given event or 0 if no
- * equivalent exists.
- */
-int
-GetXIType(InternalEvent *event)
-{
-    int xitype = 0;
-    switch(event->any.type)
-    {
-        case ET_Motion:         xitype = DeviceMotionNotify;  break;
-        case ET_ButtonPress:    xitype = DeviceButtonPress;   break;
-        case ET_ButtonRelease:  xitype = DeviceButtonRelease; break;
-        case ET_KeyPress:       xitype = DeviceKeyPress;      break;
-        case ET_KeyRelease:     xitype = DeviceKeyRelease;    break;
-        case ET_ProximityIn:    xitype = ProximityIn;         break;
-        case ET_ProximityOut:   xitype = ProximityOut;        break;
-        default:
-            break;
-    }
-    return xitype;
-}
-
-/**
- * Return the corresponding XI 2.x type for the given event or 0 if no
- * equivalent exists.
- */
-int
-GetXI2Type(InternalEvent *event)
-{
-    int xi2type = 0;
-
-    switch(event->any.type)
-    {
-        case ET_Motion:         xi2type = XI_Motion;           break;
-        case ET_ButtonPress:    xi2type = XI_ButtonPress;      break;
-        case ET_ButtonRelease:  xi2type = XI_ButtonRelease;    break;
-        case ET_KeyPress:       xi2type = XI_KeyPress;         break;
-        case ET_KeyRelease:     xi2type = XI_KeyRelease;       break;
-        case ET_Enter:          xi2type = XI_Enter;            break;
-        case ET_Leave:          xi2type = XI_Leave;            break;
-        case ET_Hierarchy:      xi2type = XI_HierarchyChanged; break;
-        case ET_DeviceChanged:  xi2type = XI_DeviceChanged;    break;
-        case ET_RawKeyPress:    xi2type = XI_RawKeyPress;      break;
-        case ET_RawKeyRelease:  xi2type = XI_RawKeyRelease;    break;
-        case ET_RawButtonPress: xi2type = XI_RawButtonPress;   break;
-        case ET_RawButtonRelease: xi2type = XI_RawButtonRelease; break;
-        case ET_RawMotion:      xi2type = XI_RawMotion;        break;
-        case ET_FocusIn:        xi2type = XI_FocusIn;          break;
-        case ET_FocusOut:       xi2type = XI_FocusOut;         break;
-        default:
-            break;
-    }
-    return xi2type;
-}
+/*

+ * Copyright © 2009 Red Hat, Inc.

+ *

+ * Permission is hereby granted, free of charge, to any person obtaining a

+ * copy of this software and associated documentation files (the "Software"),

+ * to deal in the Software without restriction, including without limitation

+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,

+ * and/or sell copies of the Software, and to permit persons to whom the

+ * Software is furnished to do so, subject to the following conditions:

+ *

+ * The above copyright notice and this permission notice (including the next

+ * paragraph) shall be included in all copies or substantial portions of the

+ * Software.

+ *

+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL

+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING

+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER

+ * DEALINGS IN THE SOFTWARE.

+ *

+ */

+

+/**

+ * @file eventconvert.c

+ * This file contains event conversion routines from InternalEvent to the

+ * matching protocol events.

+ */

+

+#ifdef HAVE_DIX_CONFIG_H

+#include <dix-config.h>

+#endif

+

+#include <stdint.h>

+#include <X11/X.h>

+#include <X11/extensions/XIproto.h>

+#include <X11/extensions/XI2proto.h>

+#include <X11/extensions/XI.h>

+#include <X11/extensions/XI2.h>

+

+#include "dix.h"

+#include "inputstr.h"

+#include "misc.h"

+#include "eventstr.h"

+#include "exglobals.h"

+#include "eventconvert.h"

+#include "xiquerydevice.h"

+#include "xkbsrv.h"

+

+

+static int countValuators(DeviceEvent *ev, int *first);

+static int getValuatorEvents(DeviceEvent *ev, deviceValuator *xv);

+static int eventToKeyButtonPointer(DeviceEvent *ev, xEvent **xi, int *count);

+static int eventToDeviceChanged(DeviceChangedEvent *ev, xEvent **dcce);

+static int eventToDeviceEvent(DeviceEvent *ev, xEvent **xi);

+static int eventToRawEvent(RawDeviceEvent *ev, xEvent **xi);

+

+/* Do not use, read comments below */

+BOOL EventIsKeyRepeat(xEvent *event);

+

+/**

+ * Hack to allow detectable autorepeat for core and XI1 events.

+ * The sequence number is unused until we send to the client and can be

+ * misused to store data. More or less, anyway.

+ *

+ * Do not use this. It may change any time without warning, eat your babies

+ * and piss on your cat.

+ */

+static void

+EventSetKeyRepeatFlag(xEvent *event, BOOL on)

+{

+    event->u.u.sequenceNumber = on;

+}

+

+/**

+ * Check if the event was marked as a repeat event before.

+ * NOTE: This is a nasty hack and should NOT be used by anyone else but

+ * TryClientEvents.

+ */

+BOOL

+EventIsKeyRepeat(xEvent *event)

+{

+    return !!event->u.u.sequenceNumber;

+}

+

+/**

+ * Convert the given event to the respective core event.

+ *

+ * Return values:

+ * Success ... core contains the matching core event.

+ * BadValue .. One or more values in the internal event are invalid.

+ * BadMatch .. The event has no core equivalent.

+ *

+ * @param[in] event The event to convert into a core event.

+ * @param[in] core The memory location to store the core event at.

+ * @return Success or the matching error code.

+ */

+int

+EventToCore(InternalEvent *event, xEvent **core_out, int *count_out)

+{

+    xEvent *core = NULL;

+    int count = 0;

+    int ret = BadImplementation;

+

+    switch(event->any.type)

+    {

+        case ET_Motion:

+            {

+                DeviceEvent *e = &event->device_event;

+                /* Don't create core motion event if neither x nor y are

+                 * present */

+                if (!BitIsOn(e->valuators.mask, 0) &&

+                    !BitIsOn(e->valuators.mask, 1))

+                {

+                    ret = BadMatch;

+                    goto out;

+                }

+            }

+            /* fallthrough */

+        case ET_ButtonPress:

+        case ET_ButtonRelease:

+        case ET_KeyPress:

+        case ET_KeyRelease:

+            {

+                DeviceEvent *e = &event->device_event;

+

+                if (e->detail.key > 0xFF)

+                {

+                    ret = BadMatch;

+                    goto out;

+                }

+

+                core = calloc(1, sizeof(*core));

+                if (!core)

+                    return BadAlloc;

+                count = 1;

+                core->u.u.type = e->type - ET_KeyPress + KeyPress;

+                core->u.u.detail = e->detail.key & 0xFF;

+                core->u.keyButtonPointer.time = e->time;

+                core->u.keyButtonPointer.rootX = e->root_x;

+                core->u.keyButtonPointer.rootY = e->root_y;

+                core->u.keyButtonPointer.state = e->corestate;

+                core->u.keyButtonPointer.root = e->root;

+                EventSetKeyRepeatFlag(core,

+                                      (e->type == ET_KeyPress &&

+                                       e->key_repeat));

+                ret = Success;

+            }

+            break;

+        case ET_ProximityIn:

+        case ET_ProximityOut:

+        case ET_RawKeyPress:

+        case ET_RawKeyRelease:

+        case ET_RawButtonPress:

+        case ET_RawButtonRelease:

+        case ET_RawMotion:

+            ret = BadMatch;

+            goto out;

+        default:

+            /* XXX: */

+            ErrorF("[dix] EventToCore: Not implemented yet \n");

+            ret = BadImplementation;

+    }

+

+out:

+    *core_out = core;

+    *count_out = count;

+    return ret;

+}

+

+/**

+ * Convert the given event to the respective XI 1.x event and store it in

+ * xi. xi is allocated on demand and must be freed by the caller.

+ * count returns the number of events in xi. If count is 1, and the type of

+ * xi is GenericEvent, then xi may be larger than 32 bytes.

+ *

+ * Return values:

+ * Success ... core contains the matching core event.

+ * BadValue .. One or more values in the internal event are invalid.

+ * BadMatch .. The event has no XI equivalent.

+ *

+ * @param[in] ev The event to convert into an XI 1 event.

+ * @param[out] xi Future memory location for the XI event.

+ * @param[out] count Number of elements in xi.

+ *

+ * @return Success or the error code.

+ */

+int

+EventToXI(InternalEvent *ev, xEvent **xi, int *count)

+{

+    switch (ev->any.type)

+    {

+        case ET_Motion:

+        case ET_ButtonPress:

+        case ET_ButtonRelease:

+        case ET_KeyPress:

+        case ET_KeyRelease:

+        case ET_ProximityIn:

+        case ET_ProximityOut:

+            return eventToKeyButtonPointer(&ev->device_event, xi, count);

+        case ET_DeviceChanged:

+        case ET_RawKeyPress:

+        case ET_RawKeyRelease:

+        case ET_RawButtonPress:

+        case ET_RawButtonRelease:

+        case ET_RawMotion:

+            *count = 0;

+            *xi = NULL;

+            return BadMatch;

+        default:

+            break;

+    }

+

+    ErrorF("[dix] EventToXI: Not implemented for %d \n", ev->any.type);

+    return BadImplementation;

+}

+

+/**

+ * Convert the given event to the respective XI 2.x event and store it in xi.

+ * xi is allocated on demand and must be freed by the caller.

+ *

+ * Return values:

+ * Success ... core contains the matching core event.

+ * BadValue .. One or more values in the internal event are invalid.

+ * BadMatch .. The event has no XI2 equivalent.

+ *

+ * @param[in] ev The event to convert into an XI2 event

+ * @param[out] xi Future memory location for the XI2 event.

+ *

+ * @return Success or the error code.

+ */

+int

+EventToXI2(InternalEvent *ev, xEvent **xi)

+{

+    switch (ev->any.type)

+    {

+        /* Enter/FocusIn are for grabs. We don't need an actual event, since

+         * the real events delivered are triggered elsewhere */

+        case ET_Enter:

+        case ET_FocusIn:

+            *xi = NULL;

+            return Success;

+        case ET_Motion:

+        case ET_ButtonPress:

+        case ET_ButtonRelease:

+        case ET_KeyPress:

+        case ET_KeyRelease:

+            return eventToDeviceEvent(&ev->device_event, xi);

+        case ET_ProximityIn:

+        case ET_ProximityOut:

+            *xi = NULL;

+            return BadMatch;

+        case ET_DeviceChanged:

+            return eventToDeviceChanged(&ev->changed_event, xi);

+        case ET_RawKeyPress:

+        case ET_RawKeyRelease:

+        case ET_RawButtonPress:

+        case ET_RawButtonRelease:

+        case ET_RawMotion:

+            return eventToRawEvent(&ev->raw_event, xi);

+        default:

+            break;

+    }

+

+    ErrorF("[dix] EventToXI2: Not implemented for %d \n", ev->any.type);

+    return BadImplementation;

+}

+

+static int

+eventToKeyButtonPointer(DeviceEvent *ev, xEvent **xi, int *count)

+{

+    int num_events;

+    int first; /* dummy */

+    deviceKeyButtonPointer *kbp;

+

+    /* Sorry, XI 1.x protocol restrictions. */

+    if (ev->detail.button > 0xFF || ev->deviceid >= 0x80)

+    {

+        *count = 0;

+        return Success;

+    }

+

+    num_events = (countValuators(ev, &first) + 5)/6; /* valuator ev */

+    if (num_events <= 0)

+    {

+        switch (ev->type)

+        {

+            case ET_KeyPress:

+            case ET_KeyRelease:

+            case ET_ButtonPress:

+            case ET_ButtonRelease:

+                /* no axes is ok */

+                break;

+            case ET_Motion:

+            case ET_ProximityIn:

+            case ET_ProximityOut:

+                *count = 0;

+                return BadMatch;

+	    default:

+		*count = 0;

+		return BadImplementation;

+        }

+    }

+

+    num_events++; /* the actual event event */

+

+    *xi = calloc(num_events, sizeof(xEvent));

+    if (!(*xi))

+    {

+        return BadAlloc;

+    }

+

+    kbp           = (deviceKeyButtonPointer*)(*xi);

+    kbp->detail   = ev->detail.button;

+    kbp->time     = ev->time;

+    kbp->root     = ev->root;

+    kbp->root_x   = ev->root_x;

+    kbp->root_y   = ev->root_y;

+    kbp->deviceid = ev->deviceid;

+    kbp->state    = ev->corestate;

+    EventSetKeyRepeatFlag((xEvent*)kbp,

+                          (ev->type == ET_KeyPress && ev->key_repeat));

+

+    if (num_events > 1)

+        kbp->deviceid |= MORE_EVENTS;

+

+    switch(ev->type)

+    {

+        case ET_Motion:        kbp->type = DeviceMotionNotify;  break;

+        case ET_ButtonPress:   kbp->type = DeviceButtonPress;   break;

+        case ET_ButtonRelease: kbp->type = DeviceButtonRelease; break;

+        case ET_KeyPress:      kbp->type = DeviceKeyPress;      break;

+        case ET_KeyRelease:    kbp->type = DeviceKeyRelease;    break;

+        case ET_ProximityIn:   kbp->type = ProximityIn;         break;

+        case ET_ProximityOut:  kbp->type = ProximityOut;        break;

+        default:

+            break;

+    }

+

+    if (num_events > 1)

+    {

+        getValuatorEvents(ev, (deviceValuator*)(kbp + 1));

+    }

+

+    *count = num_events;

+    return Success;

+}

+

+

+/**

+ * Set first to the first valuator in the event ev and return the number of

+ * valuators from first to the last set valuator.

+ */

+static int

+countValuators(DeviceEvent *ev, int *first)

+{

+    int first_valuator = -1, last_valuator = -1, num_valuators = 0;

+    int i;

+

+    for (i = 0; i < sizeof(ev->valuators.mask) * 8; i++)

+    {

+        if (BitIsOn(ev->valuators.mask, i))

+        {

+            if (first_valuator == -1)

+                first_valuator = i;

+            last_valuator = i;

+        }

+    }

+

+    if (first_valuator != -1)

+    {

+        num_valuators = last_valuator - first_valuator + 1;

+        *first = first_valuator;

+    }

+

+    return num_valuators;

+}

+

+static int

+getValuatorEvents(DeviceEvent *ev, deviceValuator *xv)

+{

+    int i;

+    int state = 0;

+    int first_valuator, num_valuators;

+

+

+    num_valuators = countValuators(ev, &first_valuator);

+    if (num_valuators > 0)

+    {

+        DeviceIntPtr dev = NULL;

+        dixLookupDevice(&dev, ev->deviceid, serverClient, DixUseAccess);

+        /* State needs to be assembled BEFORE the device is updated. */

+        state = (dev && dev->key) ? XkbStateFieldFromRec(&dev->key->xkbInfo->state) : 0;

+        state |= (dev && dev->button) ? (dev->button->state) : 0;

+    }

+

+    /* FIXME: non-continuous valuator data in internal events*/

+    for (i = 0; i < num_valuators; i += 6, xv++) {

+        xv->type = DeviceValuator;

+        xv->first_valuator = first_valuator + i;

+        xv->num_valuators = ((num_valuators - i) > 6) ? 6 : (num_valuators - i);

+        xv->deviceid = ev->deviceid;

+        xv->device_state = state;

+        switch (xv->num_valuators) {

+        case 6:

+            xv->valuator5 = ev->valuators.data[xv->first_valuator + 5];

+        case 5:

+            xv->valuator4 = ev->valuators.data[xv->first_valuator + 4];

+        case 4:

+            xv->valuator3 = ev->valuators.data[xv->first_valuator + 3];

+        case 3:

+            xv->valuator2 = ev->valuators.data[xv->first_valuator + 2];

+        case 2:

+            xv->valuator1 = ev->valuators.data[xv->first_valuator + 1];

+        case 1:

+            xv->valuator0 = ev->valuators.data[xv->first_valuator + 0];

+        }

+

+        if (i + 6 < num_valuators)

+            xv->deviceid |= MORE_EVENTS;

+    }

+

+    return (num_valuators + 5) / 6;

+}

+

+

+static int

+appendKeyInfo(DeviceChangedEvent *dce, xXIKeyInfo* info)

+{

+    uint32_t *kc;

+    int i;

+

+    info->type = XIKeyClass;

+    info->num_keycodes = dce->keys.max_keycode - dce->keys.min_keycode + 1;

+    info->length = sizeof(xXIKeyInfo)/4 + info->num_keycodes;

+    info->sourceid = dce->sourceid;

+

+    kc = (uint32_t*)&info[1];

+    for (i = 0; i < info->num_keycodes; i++)

+        *kc++ = i + dce->keys.min_keycode;

+

+    return info->length * 4;

+}

+

+static int

+appendButtonInfo(DeviceChangedEvent *dce, xXIButtonInfo *info)

+{

+    unsigned char *bits;

+    int mask_len;

+

+    mask_len = bytes_to_int32(bits_to_bytes(dce->buttons.num_buttons));

+

+    info->type = XIButtonClass;

+    info->num_buttons = dce->buttons.num_buttons;

+    info->length = bytes_to_int32(sizeof(xXIButtonInfo)) +

+                   info->num_buttons + mask_len;

+    info->sourceid = dce->sourceid;

+

+    bits = (unsigned char*)&info[1];

+    memset(bits, 0, mask_len * 4);

+    /* FIXME: is_down? */

+

+    bits += mask_len * 4;

+    memcpy(bits, dce->buttons.names, dce->buttons.num_buttons * sizeof(Atom));

+

+    return info->length * 4;

+}

+

+static int

+appendValuatorInfo(DeviceChangedEvent *dce, xXIValuatorInfo *info, int axisnumber)

+{

+    info->type = XIValuatorClass;

+    info->length = sizeof(xXIValuatorInfo)/4;

+    info->label = dce->valuators[axisnumber].name;

+    info->min.integral = dce->valuators[axisnumber].min;

+    info->min.frac = 0;

+    info->max.integral = dce->valuators[axisnumber].max;

+    info->max.frac = 0;

+    /* FIXME: value */

+    info->value.integral = 0;

+    info->value.frac = 0;

+    info->resolution = dce->valuators[axisnumber].resolution;

+    info->number = axisnumber;

+    info->mode = dce->valuators[axisnumber].mode;

+    info->sourceid = dce->sourceid;

+

+    return info->length * 4;

+}

+

+static int

+eventToDeviceChanged(DeviceChangedEvent *dce, xEvent **xi)

+{

+    xXIDeviceChangedEvent *dcce;

+    int len = sizeof(xXIDeviceChangedEvent);

+    int nkeys;

+    char *ptr;

+

+    if (dce->buttons.num_buttons)

+    {

+        len += sizeof(xXIButtonInfo);

+        len += dce->buttons.num_buttons * sizeof(Atom); /* button names */

+        len += pad_to_int32(bits_to_bytes(dce->buttons.num_buttons));

+    }

+    if (dce->num_valuators)

+        len += sizeof(xXIValuatorInfo) * dce->num_valuators;

+

+    nkeys = (dce->keys.max_keycode > 0) ?

+                dce->keys.max_keycode - dce->keys.min_keycode + 1 : 0;

+    if (nkeys > 0)

+    {

+        len += sizeof(xXIKeyInfo);

+        len += sizeof(CARD32) * nkeys; /* keycodes */

+    }

+

+    dcce = calloc(1, len);

+    if (!dcce)

+    {

+        ErrorF("[Xi] BadAlloc in SendDeviceChangedEvent.\n");

+        return BadAlloc;

+    }

+

+    dcce->type         = GenericEvent;

+    dcce->extension    = IReqCode;

+    dcce->evtype       = XI_DeviceChanged;

+    dcce->time         = dce->time;

+    dcce->deviceid     = dce->deviceid;

+    dcce->sourceid     = dce->sourceid;

+    dcce->reason       = (dce->flags & DEVCHANGE_DEVICE_CHANGE) ? XIDeviceChange : XISlaveSwitch;

+    dcce->num_classes  = 0;

+    dcce->length = bytes_to_int32(len - sizeof(xEvent));

+

+    ptr = (char*)&dcce[1];

+    if (dce->buttons.num_buttons)

+    {

+        dcce->num_classes++;

+        ptr += appendButtonInfo(dce, (xXIButtonInfo*)ptr);

+    }

+

+    if (nkeys)

+    {

+        dcce->num_classes++;

+        ptr += appendKeyInfo(dce, (xXIKeyInfo*)ptr);

+    }

+

+    if (dce->num_valuators)

+    {

+        int i;

+

+        dcce->num_classes += dce->num_valuators;

+        for (i = 0; i < dce->num_valuators; i++)

+            ptr += appendValuatorInfo(dce, (xXIValuatorInfo*)ptr, i);

+    }

+

+    *xi = (xEvent*)dcce;

+

+    return Success;

+}

+

+static int count_bits(unsigned char* ptr, int len)

+{

+    int bits = 0;

+    unsigned int i;

+    unsigned char x;

+

+    for (i = 0; i < len; i++)

+    {

+        x = ptr[i];

+        while(x > 0)

+        {

+            bits += (x & 0x1);

+            x >>= 1;

+        }

+    }

+    return bits;

+}

+

+static int

+eventToDeviceEvent(DeviceEvent *ev, xEvent **xi)

+{

+    int len = sizeof(xXIDeviceEvent);

+    xXIDeviceEvent *xde;

+    int i, btlen, vallen;

+    char *ptr;

+    FP3232 *axisval;

+

+    /* FIXME: this should just send the buttons we have, not MAX_BUTTONs. Same

+     * with MAX_VALUATORS below */

+    /* btlen is in 4 byte units */

+    btlen = bytes_to_int32(bits_to_bytes(MAX_BUTTONS));

+    len += btlen * 4; /* buttonmask len */

+

+

+    vallen = count_bits(ev->valuators.mask, sizeof(ev->valuators.mask)/sizeof(ev->valuators.mask[0]));

+    len += vallen * 2 * sizeof(uint32_t); /* axisvalues */

+    vallen = bytes_to_int32(bits_to_bytes(MAX_VALUATORS));

+    len += vallen * 4; /* valuators mask */

+

+    *xi = calloc(1, len);

+    xde = (xXIDeviceEvent*)*xi;

+    xde->type           = GenericEvent;

+    xde->extension      = IReqCode;

+    xde->evtype         = GetXI2Type((InternalEvent*)ev);

+    xde->time           = ev->time;

+    xde->length         = bytes_to_int32(len - sizeof(xEvent));

+    xde->detail         = ev->detail.button;

+    xde->root           = ev->root;

+    xde->buttons_len    = btlen;

+    xde->valuators_len  = vallen;

+    xde->deviceid       = ev->deviceid;

+    xde->sourceid       = ev->sourceid;

+    xde->root_x         = FP1616(ev->root_x, ev->root_x_frac);

+    xde->root_y         = FP1616(ev->root_y, ev->root_y_frac);

+

+    if (ev->key_repeat)

+        xde->flags      |= XIKeyRepeat;

+

+    xde->mods.base_mods         = ev->mods.base;

+    xde->mods.latched_mods      = ev->mods.latched;

+    xde->mods.locked_mods       = ev->mods.locked;

+    xde->mods.effective_mods    = ev->mods.effective;

+

+    xde->group.base_group       = ev->group.base;

+    xde->group.latched_group    = ev->group.latched;

+    xde->group.locked_group     = ev->group.locked;

+    xde->group.effective_group  = ev->group.effective;

+

+    ptr = (char*)&xde[1];

+    for (i = 0; i < sizeof(ev->buttons) * 8; i++)

+    {

+        if (BitIsOn(ev->buttons, i))

+            SetBit(ptr, i);

+    }

+

+    ptr += xde->buttons_len * 4;

+    axisval = (FP3232*)(ptr + xde->valuators_len * 4);

+    for (i = 0; i < sizeof(ev->valuators.mask) * 8; i++)

+    {

+        if (BitIsOn(ev->valuators.mask, i))

+        {

+            SetBit(ptr, i);

+            axisval->integral = ev->valuators.data[i];

+            axisval->frac = ev->valuators.data_frac[i];

+            axisval++;

+        }

+    }

+

+    return Success;

+}

+

+static int

+eventToRawEvent(RawDeviceEvent *ev, xEvent **xi)

+{

+    xXIRawEvent* raw;

+    int vallen, nvals;

+    int i, len = sizeof(xXIRawEvent);

+    char *ptr;

+    FP3232 *axisval;

+

+    nvals = count_bits(ev->valuators.mask, sizeof(ev->valuators.mask));

+    len += nvals * sizeof(FP3232) * 2; /* 8 byte per valuator, once

+                                    raw, once processed */

+    vallen = bytes_to_int32(bits_to_bytes(MAX_VALUATORS));

+    len += vallen * 4; /* valuators mask */

+

+    *xi = calloc(1, len);

+    raw = (xXIRawEvent*)*xi;

+    raw->type           = GenericEvent;

+    raw->extension      = IReqCode;

+    raw->evtype         = GetXI2Type((InternalEvent*)ev);

+    raw->time           = ev->time;

+    raw->length         = bytes_to_int32(len - sizeof(xEvent));

+    raw->detail         = ev->detail.button;

+    raw->deviceid       = ev->deviceid;

+    raw->valuators_len  = vallen;

+

+    ptr = (char*)&raw[1];

+    axisval = (FP3232*)(ptr + raw->valuators_len * 4);

+    for (i = 0; i < sizeof(ev->valuators.mask) * 8; i++)

+    {

+        if (BitIsOn(ev->valuators.mask, i))

+        {

+            SetBit(ptr, i);

+            axisval->integral = ev->valuators.data[i];

+            axisval->frac = ev->valuators.data_frac[i];

+            (axisval + nvals)->integral = ev->valuators.data_raw[i];

+            (axisval + nvals)->frac = ev->valuators.data_raw_frac[i];

+            axisval++;

+        }

+    }

+

+    return Success;

+}

+

+/**

+ * Return the corresponding core type for the given event or 0 if no core

+ * equivalent exists.

+ */

+int

+GetCoreType(InternalEvent *event)

+{

+    int coretype = 0;

+    switch(event->any.type)

+    {

+        case ET_Motion:         coretype = MotionNotify;  break;

+        case ET_ButtonPress:    coretype = ButtonPress;   break;

+        case ET_ButtonRelease:  coretype = ButtonRelease; break;

+        case ET_KeyPress:       coretype = KeyPress;      break;

+        case ET_KeyRelease:     coretype = KeyRelease;    break;

+        default:

+            break;

+    }

+    return coretype;

+}

+

+/**

+ * Return the corresponding XI 1.x type for the given event or 0 if no

+ * equivalent exists.

+ */

+int

+GetXIType(InternalEvent *event)

+{

+    int xitype = 0;

+    switch(event->any.type)

+    {

+        case ET_Motion:         xitype = DeviceMotionNotify;  break;

+        case ET_ButtonPress:    xitype = DeviceButtonPress;   break;

+        case ET_ButtonRelease:  xitype = DeviceButtonRelease; break;

+        case ET_KeyPress:       xitype = DeviceKeyPress;      break;

+        case ET_KeyRelease:     xitype = DeviceKeyRelease;    break;

+        case ET_ProximityIn:    xitype = ProximityIn;         break;

+        case ET_ProximityOut:   xitype = ProximityOut;        break;

+        default:

+            break;

+    }

+    return xitype;

+}

+

+/**

+ * Return the corresponding XI 2.x type for the given event or 0 if no

+ * equivalent exists.

+ */

+int

+GetXI2Type(InternalEvent *event)

+{

+    int xi2type = 0;

+

+    switch(event->any.type)

+    {

+        case ET_Motion:         xi2type = XI_Motion;           break;

+        case ET_ButtonPress:    xi2type = XI_ButtonPress;      break;

+        case ET_ButtonRelease:  xi2type = XI_ButtonRelease;    break;

+        case ET_KeyPress:       xi2type = XI_KeyPress;         break;

+        case ET_KeyRelease:     xi2type = XI_KeyRelease;       break;

+        case ET_Enter:          xi2type = XI_Enter;            break;

+        case ET_Leave:          xi2type = XI_Leave;            break;

+        case ET_Hierarchy:      xi2type = XI_HierarchyChanged; break;

+        case ET_DeviceChanged:  xi2type = XI_DeviceChanged;    break;

+        case ET_RawKeyPress:    xi2type = XI_RawKeyPress;      break;

+        case ET_RawKeyRelease:  xi2type = XI_RawKeyRelease;    break;

+        case ET_RawButtonPress: xi2type = XI_RawButtonPress;   break;

+        case ET_RawButtonRelease: xi2type = XI_RawButtonRelease; break;

+        case ET_RawMotion:      xi2type = XI_RawMotion;        break;

+        case ET_FocusIn:        xi2type = XI_FocusIn;          break;

+        case ET_FocusOut:       xi2type = XI_FocusOut;         break;

+        default:

+            break;

+    }

+    return xi2type;

+}

diff --git a/xorg-server/dix/getevents.c b/xorg-server/dix/getevents.c
index 5b8e3798d..2361810a0 100644
--- a/xorg-server/dix/getevents.c
+++ b/xorg-server/dix/getevents.c
@@ -1,1324 +1,1314 @@
-/*
- * Copyright © 2006 Nokia Corporation
- * Copyright © 2006-2007 Daniel Stone
- * Copyright © 2008 Red Hat, Inc.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice (including the next
- * paragraph) shall be included in all copies or substantial portions of the
- * Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
- * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
- * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
- * DEALINGS IN THE SOFTWARE.
- *
- * Authors: Daniel Stone <daniel@fooishbar.org>
- *          Peter Hutterer <peter.hutterer@who-t.net>
- */
-
-#ifdef HAVE_DIX_CONFIG_H
-#include <dix-config.h>
-#endif
-
-#include <X11/X.h>
-#include <X11/keysym.h>
-#include <X11/Xproto.h>
-#include <math.h>
-
-#include "misc.h"
-#include "resource.h"
-#include "inputstr.h"
-#include "scrnintstr.h"
-#include "cursorstr.h"
-#include "dixstruct.h"
-#include "globals.h"
-#include "dixevents.h"
-#include "mipointer.h"
-#include "eventstr.h"
-#include "eventconvert.h"
-#include "inpututils.h"
-
-#include <X11/extensions/XKBproto.h>
-#include "xkbsrv.h"
-
-#ifdef PANORAMIX
-#include "panoramiX.h"
-#include "panoramiXsrv.h"
-#endif
-
-#include <X11/extensions/XI.h>
-#include <X11/extensions/XIproto.h>
-#include <pixman.h>
-#include "exglobals.h"
-#include "exevents.h"
-#include "exglobals.h"
-#include "extnsionst.h"
-#include "listdev.h" /* for sizing up DeviceClassesChangedEvent */
-
-/* Number of motion history events to store. */
-#define MOTION_HISTORY_SIZE 256
-
-/* InputEventList is the container list for all input events generated by the
- * DDX. The DDX is expected to call GetEventList() and then pass the list into
- * Get{Pointer|Keyboard}Events.
- */
-EventListPtr InputEventList = NULL;
-int InputEventListLen = 0;
-
-int
-GetEventList(EventListPtr* list)
-{
-    *list = InputEventList;
-    return InputEventListLen;
-}
-
-/**
- * Pick some arbitrary size for Xi motion history.
- */
-int
-GetMotionHistorySize(void)
-{
-    return MOTION_HISTORY_SIZE;
-}
-
-void
-set_button_down(DeviceIntPtr pDev, int button, int type)
-{
-    if (type == BUTTON_PROCESSED)
-        SetBit(pDev->button->down, button);
-    else
-        SetBit(pDev->button->postdown, button);
-}
-
-void
-set_button_up(DeviceIntPtr pDev, int button, int type)
-{
-    if (type == BUTTON_PROCESSED)
-        ClearBit(pDev->button->down, button);
-    else
-        ClearBit(pDev->button->postdown, button);
-}
-
-Bool
-button_is_down(DeviceIntPtr pDev, int button, int type)
-{
-    Bool ret = FALSE;
-
-    if (type & BUTTON_PROCESSED)
-        ret = ret || BitIsOn(pDev->button->down, button);
-    if (type & BUTTON_POSTED)
-        ret = ret || BitIsOn(pDev->button->postdown, button);
-
-    return ret;
-}
-
-void
-set_key_down(DeviceIntPtr pDev, int key_code, int type)
-{
-    if (type == KEY_PROCESSED)
-        SetBit(pDev->key->down, key_code);
-    else
-        SetBit(pDev->key->postdown, key_code);
-}
-
-void
-set_key_up(DeviceIntPtr pDev, int key_code, int type)
-{
-    if (type == KEY_PROCESSED)
-        ClearBit(pDev->key->down, key_code);
-    else
-        ClearBit(pDev->key->postdown, key_code);
-}
-
-Bool
-key_is_down(DeviceIntPtr pDev, int key_code, int type)
-{
-    Bool ret = FALSE;
-
-    if (type & KEY_PROCESSED)
-        ret = ret || BitIsOn(pDev->key->down, key_code);
-    if (type & KEY_POSTED)
-        ret = ret || BitIsOn(pDev->key->postdown, key_code);
-
-    return ret;
-}
-
-static Bool
-key_autorepeats(DeviceIntPtr pDev, int key_code)
-{
-    return !!(pDev->kbdfeed->ctrl.autoRepeats[key_code >> 3] &
-              (1 << (key_code & 7)));
-}
-
-static void
-init_event(DeviceIntPtr dev, DeviceEvent* event, Time ms)
-{
-    memset(event, 0, sizeof(DeviceEvent));
-    event->header = ET_Internal;
-    event->length = sizeof(DeviceEvent);
-    event->time = ms;
-    event->deviceid = dev->id;
-    event->sourceid = dev->id;
-}
-
-static void
-init_raw(DeviceIntPtr dev, RawDeviceEvent *event, Time ms, int type, int detail)
-{
-    memset(event, 0, sizeof(RawDeviceEvent));
-    event->header = ET_Internal;
-    event->length = sizeof(RawDeviceEvent);
-    event->type = ET_RawKeyPress - ET_KeyPress + type;
-    event->time = ms;
-    event->deviceid = dev->id;
-    event->sourceid = dev->id;
-    event->detail.button = detail;
-}
-
-static void
-set_raw_valuators(RawDeviceEvent *event, ValuatorMask *mask, int32_t* data)
-{
-    int i;
-
-    for (i = 0; i < valuator_mask_size(mask); i++)
-    {
-        if (valuator_mask_isset(mask, i))
-        {
-            SetBit(event->valuators.mask, i);
-            data[i] = valuator_mask_get(mask, i);
-        }
-    }
-}
-
-
-static void
-set_valuators(DeviceIntPtr dev, DeviceEvent* event, ValuatorMask *mask)
-{
-    int i;
-
-    for (i = 0; i < valuator_mask_size(mask); i++)
-    {
-        if (valuator_mask_isset(mask, i))
-        {
-            SetBit(event->valuators.mask, i);
-            if (valuator_get_mode(dev, i) == Absolute)
-                SetBit(event->valuators.mode, i);
-            event->valuators.data[i] = valuator_mask_get(mask, i);
-            event->valuators.data_frac[i] =
-                dev->last.remainder[i] * (1 << 16) * (1 << 16);
-        }
-    }
-}
-
-void
-CreateClassesChangedEvent(EventList* event,
-                          DeviceIntPtr master,
-                          DeviceIntPtr slave,
-                          int type)
-{
-    int i;
-    DeviceChangedEvent *dce;
-    CARD32 ms = GetTimeInMillis();
-
-    dce = (DeviceChangedEvent*)event->event;
-    memset(dce, 0, sizeof(DeviceChangedEvent));
-    dce->deviceid = slave->id;
-    dce->masterid = master->id;
-    dce->header = ET_Internal;
-    dce->length = sizeof(DeviceChangedEvent);
-    dce->type = ET_DeviceChanged;
-    dce->time = ms;
-    dce->flags = type;
-    dce->flags |= DEVCHANGE_SLAVE_SWITCH;
-    dce->sourceid = slave->id;
-
-    if (slave->button)
-    {
-        dce->buttons.num_buttons = slave->button->numButtons;
-        for (i = 0; i < dce->buttons.num_buttons; i++)
-            dce->buttons.names[i] = slave->button->labels[i];
-    }
-    if (slave->valuator)
-    {
-        dce->num_valuators = slave->valuator->numAxes;
-        for (i = 0; i < dce->num_valuators; i++)
-        {
-            dce->valuators[i].min = slave->valuator->axes[i].min_value;
-            dce->valuators[i].max = slave->valuator->axes[i].max_value;
-            dce->valuators[i].resolution = slave->valuator->axes[i].resolution;
-            dce->valuators[i].mode = slave->valuator->axes[i].mode;
-            dce->valuators[i].name = slave->valuator->axes[i].label;
-        }
-    }
-    if (slave->key)
-    {
-        dce->keys.min_keycode = slave->key->xkbInfo->desc->min_key_code;
-        dce->keys.max_keycode = slave->key->xkbInfo->desc->max_key_code;
-    }
-}
-
-/**
- * Rescale the coord between the two axis ranges.
- */
-static int
-rescaleValuatorAxis(int coord, float remainder, float *remainder_return, AxisInfoPtr from, AxisInfoPtr to,
-                    int defmax)
-{
-    int fmin = 0, tmin = 0, fmax = defmax, tmax = defmax, coord_return;
-    float value;
-
-    if(from && from->min_value < from->max_value) {
-        fmin = from->min_value;
-        fmax = from->max_value;
-    }
-    if(to && to->min_value < to->max_value) {
-        tmin = to->min_value;
-        tmax = to->max_value;
-    }
-
-    if(fmin == tmin && fmax == tmax) {
-        if (remainder_return)
-            *remainder_return = remainder;
-        return coord;
-    }
-
-    if(fmax == fmin) { /* avoid division by 0 */
-        if (remainder_return)
-            *remainder_return = 0.0;
-        return 0;
-    }
-
-    value = (coord + remainder - fmin) * (tmax - tmin) / (fmax - fmin) + tmin;
-    coord_return = lroundf(value);
-    if (remainder_return)
-        *remainder_return = value - coord_return;
-    return coord_return;
-}
-
-/**
- * Update all coordinates when changing to a different SD
- * to ensure that relative reporting will work as expected
- * without loss of precision.
- *
- * pDev->last.valuators will be in absolute device coordinates after this
- * function.
- */
-static void
-updateSlaveDeviceCoords(DeviceIntPtr master, DeviceIntPtr pDev)
-{
-    ScreenPtr scr = miPointerGetScreen(pDev);
-    int i;
-    DeviceIntPtr lastSlave;
-
-    /* master->last.valuators[0]/[1] is in screen coords and the actual
-     * position of the pointer */
-    pDev->last.valuators[0] = master->last.valuators[0];
-    pDev->last.valuators[1] = master->last.valuators[1];
-
-    if (!pDev->valuator)
-        return;
-
-    /* scale back to device coordinates */
-    if(pDev->valuator->numAxes > 0)
-        pDev->last.valuators[0] = rescaleValuatorAxis(pDev->last.valuators[0], pDev->last.remainder[0],
-                        &pDev->last.remainder[0], NULL, pDev->valuator->axes + 0, scr->width);
-    if(pDev->valuator->numAxes > 1)
-        pDev->last.valuators[1] = rescaleValuatorAxis(pDev->last.valuators[1], pDev->last.remainder[1],
-                        &pDev->last.remainder[1], NULL, pDev->valuator->axes + 1, scr->height);
-
-    /* calculate the other axis as well based on info from the old
-     * slave-device. If the old slave had less axes than this one,
-     * last.valuators is reset to 0.
-     */
-    if ((lastSlave = master->last.slave) && lastSlave->valuator) {
-        for (i = 2; i < pDev->valuator->numAxes; i++) {
-            if (i >= lastSlave->valuator->numAxes)
-                pDev->last.valuators[i] = 0;
-            else
-                pDev->last.valuators[i] =
-                    rescaleValuatorAxis(pDev->last.valuators[i],
-                            pDev->last.remainder[i],
-                            &pDev->last.remainder[i],
-                            lastSlave->valuator->axes + i,
-                            pDev->valuator->axes + i, 0);
-        }
-    }
-
-}
-
-/**
- * Allocate the motion history buffer.
- */
-void
-AllocateMotionHistory(DeviceIntPtr pDev)
-{
-    int size;
-    free(pDev->valuator->motion);
-
-    if (pDev->valuator->numMotionEvents < 1)
-        return;
-
-    /* An MD must have a motion history size large enough to keep all
-     * potential valuators, plus the respective range of the valuators.
-     * 3 * INT32 for (min_val, max_val, curr_val))
-     */
-    if (IsMaster(pDev))
-        size = sizeof(INT32) * 3 * MAX_VALUATORS;
-    else {
-        ValuatorClassPtr v = pDev->valuator;
-        int numAxes;
-        /* XI1 doesn't understand mixed mode devices */
-        for (numAxes = 0; numAxes < v->numAxes; numAxes++)
-            if (valuator_get_mode(pDev, numAxes) != valuator_get_mode(pDev, 0))
-                break;
-        size = sizeof(INT32) * numAxes;
-    }
-
-    size += sizeof(Time);
-
-    pDev->valuator->motion = calloc(pDev->valuator->numMotionEvents, size);
-    pDev->valuator->first_motion = 0;
-    pDev->valuator->last_motion = 0;
-    if (!pDev->valuator->motion)
-        ErrorF("[dix] %s: Failed to alloc motion history (%d bytes).\n",
-                pDev->name, size * pDev->valuator->numMotionEvents);
-}
-
-/**
- * Dump the motion history between start and stop into the supplied buffer.
- * Only records the event for a given screen in theory, but in practice, we
- * sort of ignore this.
- *
- * If core is set, we only generate x/y, in INT16, scaled to screen coords.
- */
-int
-GetMotionHistory(DeviceIntPtr pDev, xTimecoord **buff, unsigned long start,
-                 unsigned long stop, ScreenPtr pScreen, BOOL core)
-{
-    char *ibuff = NULL, *obuff;
-    int i = 0, ret = 0;
-    int j, coord;
-    Time current;
-    /* The size of a single motion event. */
-    int size;
-    int dflt;
-    AxisInfo from, *to; /* for scaling */
-    INT32 *ocbuf, *icbuf; /* pointer to coordinates for copying */
-    INT16 *corebuf;
-    AxisInfo core_axis = {0};
-
-    if (!pDev->valuator || !pDev->valuator->numMotionEvents)
-        return 0;
-
-    if (core && !pScreen)
-        return 0;
-
-    if (IsMaster(pDev))
-        size = (sizeof(INT32) * 3 * MAX_VALUATORS) + sizeof(Time);
-    else
-        size = (sizeof(INT32) * pDev->valuator->numAxes) + sizeof(Time);
-
-    *buff = malloc(size * pDev->valuator->numMotionEvents);
-    if (!(*buff))
-        return 0;
-    obuff = (char *)*buff;
-
-    for (i = pDev->valuator->first_motion;
-         i != pDev->valuator->last_motion;
-         i = (i + 1) % pDev->valuator->numMotionEvents) {
-        /* We index the input buffer by which element we're accessing, which
-         * is not monotonic, and the output buffer by how many events we've
-         * written so far. */
-        ibuff = (char *) pDev->valuator->motion + (i * size);
-        memcpy(&current, ibuff, sizeof(Time));
-
-        if (current > stop) {
-            return ret;
-        }
-        else if (current >= start) {
-            if (core)
-            {
-                memcpy(obuff, ibuff, sizeof(Time)); /* copy timestamp */
-
-                icbuf = (INT32*)(ibuff + sizeof(Time));
-                corebuf = (INT16*)(obuff + sizeof(Time));
-
-                /* fetch x coordinate + range */
-                memcpy(&from.min_value, icbuf++, sizeof(INT32));
-                memcpy(&from.max_value, icbuf++, sizeof(INT32));
-                memcpy(&coord, icbuf++, sizeof(INT32));
-
-                /* scale to screen coords */
-                to = &core_axis;
-                to->max_value = pScreen->width;
-                coord = rescaleValuatorAxis(coord, 0.0, NULL, &from, to, pScreen->width);
-
-                memcpy(corebuf, &coord, sizeof(INT16));
-                corebuf++;
-
-                /* fetch y coordinate + range */
-                memcpy(&from.min_value, icbuf++, sizeof(INT32));
-                memcpy(&from.max_value, icbuf++, sizeof(INT32));
-                memcpy(&coord, icbuf++, sizeof(INT32));
-
-                to->max_value = pScreen->height;
-                coord = rescaleValuatorAxis(coord, 0.0, NULL, &from, to, pScreen->height);
-                memcpy(corebuf, &coord, sizeof(INT16));
-
-            } else if (IsMaster(pDev))
-            {
-                memcpy(obuff, ibuff, sizeof(Time)); /* copy timestamp */
-
-                ocbuf = (INT32*)(obuff + sizeof(Time));
-                icbuf = (INT32*)(ibuff + sizeof(Time));
-                for (j = 0; j < MAX_VALUATORS; j++)
-                {
-                    if (j >= pDev->valuator->numAxes)
-                        break;
-
-                    /* fetch min/max/coordinate */
-                    memcpy(&from.min_value, icbuf++, sizeof(INT32));
-                    memcpy(&from.max_value, icbuf++, sizeof(INT32));
-                    memcpy(&coord, icbuf++, sizeof(INT32));
-
-                    to = (j < pDev->valuator->numAxes) ? &pDev->valuator->axes[j] : NULL;
-
-                    /* x/y scaled to screen if no range is present */
-                    if (j == 0 && (from.max_value < from.min_value))
-                        from.max_value = pScreen->width;
-                    else if (j == 1 && (from.max_value < from.min_value))
-                        from.max_value = pScreen->height;
-
-                    if (j == 0 && (to->max_value < to->min_value))
-                        dflt = pScreen->width;
-                    else if (j == 1 && (to->max_value < to->min_value))
-                        dflt = pScreen->height;
-                    else
-                        dflt = 0;
-
-                    /* scale from stored range into current range */
-                    coord = rescaleValuatorAxis(coord, 0.0, NULL, &from, to, 0);
-                    memcpy(ocbuf, &coord, sizeof(INT32));
-                    ocbuf++;
-                }
-            } else
-                memcpy(obuff, ibuff, size);
-
-            /* don't advance by size here. size may be different to the
-             * actually written size if the MD has less valuators than MAX */
-            if (core)
-                obuff += sizeof(INT32) + sizeof(Time);
-            else
-                obuff += (sizeof(INT32) * pDev->valuator->numAxes) + sizeof(Time);
-            ret++;
-        }
-    }
-
-    return ret;
-}
-
-
-/**
- * Update the motion history for a specific device, with the list of
- * valuators.
- *
- * Layout of the history buffer:
- *   for SDs: [time] [val0] [val1] ... [valn]
- *   for MDs: [time] [min_val0] [max_val0] [val0] [min_val1] ... [valn]
- *
- * For events that have some valuators unset:
- *      min_val == max_val == val == 0.
- */
-static void
-updateMotionHistory(DeviceIntPtr pDev, CARD32 ms, ValuatorMask *mask,
-                    int *valuators)
-{
-    char *buff = (char *) pDev->valuator->motion;
-    ValuatorClassPtr v;
-    int i;
-
-    if (!pDev->valuator->numMotionEvents)
-        return;
-
-    v = pDev->valuator;
-    if (IsMaster(pDev))
-    {
-        buff += ((sizeof(INT32) * 3 * MAX_VALUATORS) + sizeof(CARD32)) *
-                v->last_motion;
-
-        memcpy(buff, &ms, sizeof(Time));
-        buff += sizeof(Time);
-
-        memset(buff, 0, sizeof(INT32) * 3 * MAX_VALUATORS);
-
-        for (i = 0; i < v->numAxes; i++)
-        {
-            /* XI1 doesn't support mixed mode devices */
-            if (valuator_get_mode(pDev, i) != valuator_get_mode(pDev, 0))
-                break;
-            if (valuator_mask_size(mask) <= i || !valuator_mask_isset(mask, i))
-            {
-                buff += 3 * sizeof(INT32);
-                continue;
-            }
-            memcpy(buff, &v->axes[i].min_value, sizeof(INT32));
-            buff += sizeof(INT32);
-            memcpy(buff, &v->axes[i].max_value, sizeof(INT32));
-            buff += sizeof(INT32);
-            memcpy(buff, &valuators[i], sizeof(INT32));
-            buff += sizeof(INT32);
-        }
-    } else
-    {
-
-        buff += ((sizeof(INT32) * pDev->valuator->numAxes) + sizeof(CARD32)) *
-            pDev->valuator->last_motion;
-
-        memcpy(buff, &ms, sizeof(Time));
-        buff += sizeof(Time);
-
-        memset(buff, 0, sizeof(INT32) * pDev->valuator->numAxes);
-
-        for (i = 0; i < MAX_VALUATORS; i++)
-        {
-            if (valuator_mask_size(mask) <= i || !valuator_mask_isset(mask, i))
-            {
-                buff += sizeof(INT32);
-                continue;
-            }
-            memcpy(buff, &valuators[i], sizeof(INT32));
-            buff += sizeof(INT32);
-        }
-    }
-
-    pDev->valuator->last_motion = (pDev->valuator->last_motion + 1) %
-        pDev->valuator->numMotionEvents;
-    /* If we're wrapping around, just keep the circular buffer going. */
-    if (pDev->valuator->first_motion == pDev->valuator->last_motion)
-        pDev->valuator->first_motion = (pDev->valuator->first_motion + 1) %
-                                       pDev->valuator->numMotionEvents;
-
-    return;
-}
-
-
-/**
- * Returns the maximum number of events GetKeyboardEvents,
- * GetKeyboardValuatorEvents, and GetPointerEvents will ever return.
- *
- * This MUST be absolutely constant, from init until exit.
- */
-int
-GetMaximumEventsNum(void) {
-    /* One raw event
-     * One device event
-     * One possible device changed event
-     */
-    return 3;
-}
-
-
-/**
- * Clip an axis to its bounds, which are declared in the call to
- * InitValuatorAxisClassStruct.
- */
-static void
-clipAxis(DeviceIntPtr pDev, int axisNum, int *val)
-{
-    AxisInfoPtr axis;
-
-    if (axisNum >= pDev->valuator->numAxes)
-        return;
-
-    axis = pDev->valuator->axes + axisNum;
-
-    /* If a value range is defined, clip. If not, do nothing */
-    if (axis->max_value <= axis->min_value)
-        return;
-
-    if (*val < axis->min_value)
-        *val = axis->min_value;
-    if (*val > axis->max_value)
-        *val = axis->max_value;
-}
-
-/**
- * Clip every axis in the list of valuators to its bounds.
- */
-static void
-clipValuators(DeviceIntPtr pDev, ValuatorMask *mask)
-{
-    int i;
-
-    for (i = 0; i < valuator_mask_size(mask); i++)
-        if (valuator_mask_isset(mask, i))
-        {
-            int val = valuator_mask_get(mask, i);
-            clipAxis(pDev, i, &val);
-            valuator_mask_set(mask, i, val);
-        }
-}
-
-/**
- * Create the DCCE event (does not update the master's device state yet, this
- * is done in the event processing).
- * Pull in the coordinates from the MD if necessary.
- *
- * @param events Pointer to a pre-allocated event list.
- * @param dev The slave device that generated an event.
- * @param type Either DEVCHANGE_POINTER_EVENT and/or DEVCHANGE_KEYBOARD_EVENT
- * @param num_events The current number of events, returns the number of
- *        events if a DCCE was generated.
- * @return The updated @events pointer.
- */
-EventListPtr
-UpdateFromMaster(EventListPtr events, DeviceIntPtr dev, int type, int *num_events)
-{
-    DeviceIntPtr master;
-
-    master = GetMaster(dev, (type & DEVCHANGE_POINTER_EVENT) ?  MASTER_POINTER : MASTER_KEYBOARD);
-
-    if (master && master->last.slave != dev)
-    {
-        CreateClassesChangedEvent(events, master, dev, type);
-        if (IsPointerDevice(master))
-        {
-            updateSlaveDeviceCoords(master, dev);
-            master->last.numValuators = dev->last.numValuators;
-        }
-        master->last.slave = dev;
-        (*num_events)++;
-        events++;
-    }
-    return events;
-}
-
-/**
- * Move the device's pointer to the position given in the valuators.
- *
- * @param dev The device which's pointer is to be moved.
- * @param x Returns the x position of the pointer after the move.
- * @param y Returns the y position of the pointer after the move.
- * @param mask Bit mask of valid valuators.
- * @param valuators Valuator data for each axis between @first and
- *        @first+@num.
- */
-static void
-moveAbsolute(DeviceIntPtr dev, int *x, int *y, ValuatorMask *mask)
-{
-    int i;
-
-    if (valuator_mask_isset(mask, 0))
-        *x = valuator_mask_get(mask, 0);
-    else
-        *x = dev->last.valuators[0];
-
-    if (valuator_mask_isset(mask, 1))
-        *y = valuator_mask_get(mask, 1);
-    else
-        *y = dev->last.valuators[1];
-
-    clipAxis(dev, 0, x);
-    clipAxis(dev, 1, y);
-
-    for (i = 2; i < valuator_mask_size(mask); i++)
-    {
-        if (valuator_mask_isset(mask, i))
-        {
-            dev->last.valuators[i] = valuator_mask_get(mask, i);
-            clipAxis(dev, i, &dev->last.valuators[i]);
-        }
-    }
-}
-
-/**
- * Move the device's pointer by the values given in @valuators.
- *
- * @param dev The device which's pointer is to be moved.
- * @param x Returns the x position of the pointer after the move.
- * @param y Returns the y position of the pointer after the move.
- * @param mask Bit mask of valid valuators.
- * @param valuators Valuator data for each axis between @first and
- *        @first+@num.
- */
-static void
-moveRelative(DeviceIntPtr dev, int *x, int *y, ValuatorMask *mask)
-{
-    int i;
-
-    *x = dev->last.valuators[0];
-    *y = dev->last.valuators[1];
-
-    if (valuator_mask_isset(mask, 0))
-        *x += valuator_mask_get(mask, 0);
-
-    if (valuator_mask_isset(mask, 1))
-        *y += valuator_mask_get(mask, 1);
-
-    /* if attached, clip both x and y to the defined limits (usually
-     * co-ord space limit). If it is attached, we need x/y to go over the
-     * limits to be able to change screens. */
-    if(dev->valuator && IsMaster(dev) || !IsFloating(dev)) {
-        if (valuator_get_mode(dev, 0) == Absolute)
-            clipAxis(dev, 0, x);
-        if (valuator_get_mode(dev, 1) == Absolute)
-            clipAxis(dev, 1, y);
-    }
-
-    /* calc other axes, clip, drop back into valuators */
-    for (i = 2; i < valuator_mask_size(mask); i++)
-    {
-        if (valuator_mask_isset(mask, i))
-        {
-            dev->last.valuators[i] += valuator_mask_get(mask, i);
-            if (valuator_get_mode(dev, i) == Absolute)
-                clipAxis(dev, i, &dev->last.valuators[i]);
-            valuator_mask_set(mask, i, dev->last.valuators[i]);
-        }
-    }
-}
-
-/**
- * Accelerate the data in valuators based on the device's acceleration scheme.
- *
- * @param dev The device which's pointer is to be moved.
- * @param first The first valuator in @valuators
- * @param num Total number of valuators in @valuators.
- * @param valuators Valuator data for each axis between @first and
- *        @first+@num.
- * @param ms Current time.
- */
-static void
-accelPointer(DeviceIntPtr dev, int first, int num, int *valuators, CARD32 ms)
-{
-    if (dev->valuator->accelScheme.AccelSchemeProc)
-        dev->valuator->accelScheme.AccelSchemeProc(dev, first, num, valuators, ms);
-}
-
-/**
- * If we have HW cursors, this actually moves the visible sprite. If not, we
- * just do all the screen crossing, etc.
- *
- * We scale from device to screen coordinates here, call
- * miPointerSetPosition() and then scale back into device coordinates (if
- * needed). miPSP will change x/y if the screen was crossed.
- *
- * @param dev The device to be moved.
- * @param x Pointer to current x-axis value, may be modified.
- * @param y Pointer to current y-axis value, may be modified.
- * @param x_frac Fractional part of current x-axis value, may be modified.
- * @param y_frac Fractional part of current y-axis value, may be modified.
- * @param scr Screen the device's sprite is currently on.
- * @param screenx Screen x coordinate the sprite is on after the update.
- * @param screeny Screen y coordinate the sprite is on after the update.
- * @param screenx_frac Fractional part of screen x coordinate, as above.
- * @param screeny_frac Fractional part of screen y coordinate, as above.
- */
-static void
-positionSprite(DeviceIntPtr dev, int *x, int *y, float x_frac, float y_frac,
-               ScreenPtr scr, int *screenx, int *screeny, float *screenx_frac, float *screeny_frac)
-{
-    int old_screenx, old_screeny;
-
-    /* scale x&y to screen */
-    if (dev->valuator && dev->valuator->numAxes > 0) {
-        *screenx = rescaleValuatorAxis(*x, x_frac, screenx_frac,
-                dev->valuator->axes + 0, NULL, scr->width);
-    } else {
-        *screenx = dev->last.valuators[0];
-        *screenx_frac = dev->last.remainder[0];
-    }
-
-    if (dev->valuator && dev->valuator->numAxes > 1) {
-        *screeny = rescaleValuatorAxis(*y, y_frac, screeny_frac,
-                dev->valuator->axes + 1, NULL, scr->height);
-    } else {
-        *screeny = dev->last.valuators[1];
-        *screeny_frac = dev->last.remainder[1];
-    }
-
-    /* Hit the left screen edge? */
-    if (*screenx <= 0 && *screenx_frac < 0.0f)
-    {
-        *screenx_frac = 0.0f;
-        x_frac = 0.0f;
-    }
-    if (*screeny <= 0 && *screeny_frac < 0.0f)
-    {
-        *screeny_frac = 0.0f;
-        y_frac = 0.0f;
-    }
-
-
-    old_screenx = *screenx;
-    old_screeny = *screeny;
-    /* This takes care of crossing screens for us, as well as clipping
-     * to the current screen. */
-    miPointerSetPosition(dev, screenx, screeny);
-
-    if(!IsMaster(dev) || !IsFloating(dev)) {
-        DeviceIntPtr master = GetMaster(dev, MASTER_POINTER);
-        master->last.valuators[0] = *screenx;
-        master->last.valuators[1] = *screeny;
-        master->last.remainder[0] = *screenx_frac;
-        master->last.remainder[1] = *screeny_frac;
-    }
-
-    if (dev->valuator)
-    {
-        /* Crossed screen? Scale back to device coordiantes */
-        if(*screenx != old_screenx)
-        {
-            scr = miPointerGetScreen(dev);
-            *x = rescaleValuatorAxis(*screenx, *screenx_frac, &x_frac, NULL,
-                                    dev->valuator->axes + 0, scr->width);
-        }
-        if(*screeny != old_screeny)
-        {
-            scr = miPointerGetScreen(dev);
-            *y = rescaleValuatorAxis(*screeny, *screeny_frac, &y_frac, NULL,
-                                     dev->valuator->axes + 1, scr->height);
-        }
-    }
-
-    /* dropy x/y (device coordinates) back into valuators for next event */
-    dev->last.valuators[0] = *x;
-    dev->last.valuators[1] = *y;
-    dev->last.remainder[0] = x_frac;
-    dev->last.remainder[1] = y_frac;
-}
-
-/**
- * Update the motion history for the device and (if appropriate) for its
- * master device.
- * @param dev Slave device to update.
- * @param mask Bit mask of valid valuators to append to history.
- * @param num Total number of valuators to append to history.
- * @param ms Current time
- */
-static void
-updateHistory(DeviceIntPtr dev, ValuatorMask *mask, CARD32 ms)
-{
-    if (!dev->valuator)
-        return;
-
-    updateMotionHistory(dev, ms, mask, dev->last.valuators);
-    if(!IsMaster(dev) || !IsFloating(dev))
-    {
-        DeviceIntPtr master = GetMaster(dev, MASTER_POINTER);
-        updateMotionHistory(master, ms, mask, dev->last.valuators);
-    }
-}
-
-/**
- * Convenience wrapper around GetKeyboardValuatorEvents, that takes no
- * valuators.
- */
-int
-GetKeyboardEvents(EventList *events, DeviceIntPtr pDev, int type, int key_code) {
-    ValuatorMask mask;
-
-    valuator_mask_zero(&mask);
-    return GetKeyboardValuatorEvents(events, pDev, type, key_code, &mask);
-}
-
-
-/**
- * Returns a set of InternalEvents for KeyPress/KeyRelease, optionally
- * also with valuator events.
- *
- * events is not NULL-terminated; the return value is the number of events.
- * The DDX is responsible for allocating the event structure in the first
- * place via GetMaximumEventsNum(), and for freeing it.
- */
-int
-GetKeyboardValuatorEvents(EventList *events, DeviceIntPtr pDev, int type,
-                          int key_code, const ValuatorMask *mask_in) {
-    int num_events = 0;
-    CARD32 ms = 0;
-    DeviceEvent *event;
-    RawDeviceEvent *raw;
-    ValuatorMask mask;
-
-    /* refuse events from disabled devices */
-    if (!pDev->enabled)
-        return 0;
-
-    if (!events ||!pDev->key || !pDev->focus || !pDev->kbdfeed ||
-       (type != KeyPress && type != KeyRelease) ||
-       (key_code < 8 || key_code > 255))
-        return 0;
-
-    num_events = 1;
-
-    events = UpdateFromMaster(events, pDev, DEVCHANGE_KEYBOARD_EVENT, &num_events);
-
-    /* Handle core repeating, via press/release/press/release. */
-    if (type == KeyPress && key_is_down(pDev, key_code, KEY_POSTED)) {
-        /* If autorepeating is disabled either globally or just for that key,
-         * or we have a modifier, don't generate a repeat event. */
-        if (!pDev->kbdfeed->ctrl.autoRepeat ||
-            !key_autorepeats(pDev, key_code) ||
-            pDev->key->xkbInfo->desc->map->modmap[key_code])
-            return 0;
-    }
-
-    ms = GetTimeInMillis();
-
-    raw = (RawDeviceEvent*)events->event;
-    events++;
-    num_events++;
-
-    valuator_mask_copy(&mask, mask_in);
-
-    init_raw(pDev, raw, ms, type, key_code);
-    set_raw_valuators(raw, &mask, raw->valuators.data_raw);
-
-    clipValuators(pDev, &mask);
-
-    set_raw_valuators(raw, &mask, raw->valuators.data);
-
-    event = (DeviceEvent*) events->event;
-    init_event(pDev, event, ms);
-    event->detail.key = key_code;
-
-    if (type == KeyPress) {
-        event->type = ET_KeyPress;
-	set_key_down(pDev, key_code, KEY_POSTED);
-    }
-    else if (type == KeyRelease) {
-        event->type = ET_KeyRelease;
-	set_key_up(pDev, key_code, KEY_POSTED);
-    }
-
-    clipValuators(pDev, &mask);
-
-    set_valuators(pDev, event, &mask);
-
-    return num_events;
-}
-
-/**
- * Initialize an event list and fill with 32 byte sized events.
- * This event list is to be passed into GetPointerEvents() and
- * GetKeyboardEvents().
- *
- * @param num_events Number of elements in list.
- */
-EventListPtr
-InitEventList(int num_events)
-{
-    EventListPtr events;
-    int i;
-
-    events = (EventListPtr)calloc(num_events, sizeof(EventList));
-    if (!events)
-        return NULL;
-
-    for (i = 0; i < num_events; i++)
-    {
-        events[i].evlen = sizeof(InternalEvent);
-        events[i].event = calloc(1, sizeof(InternalEvent));
-        if (!events[i].event)
-        {
-            /* rollback */
-            while(i--)
-                free(events[i].event);
-            free(events);
-            events = NULL;
-            break;
-        }
-    }
-
-    return events;
-}
-
-/**
- * Free an event list.
- *
- * @param list The list to be freed.
- * @param num_events Number of elements in list.
- */
-void
-FreeEventList(EventListPtr list, int num_events)
-{
-    if (!list)
-        return;
-    while(num_events--)
-        free(list[num_events].event);
-    free(list);
-}
-
-static void
-transformAbsolute(DeviceIntPtr dev, ValuatorMask *mask)
-{
-    struct pixman_f_vector p;
-
-    /* p' = M * p in homogeneous coordinates */
-    p.v[0] = (valuator_mask_isset(mask, 0) ? valuator_mask_get(mask, 0) :
-              dev->last.valuators[0]);
-    p.v[1] = (valuator_mask_isset(mask, 1) ? valuator_mask_get(mask, 1) :
-              dev->last.valuators[1]);
-    p.v[2] = 1.0;
-
-    pixman_f_transform_point(&dev->transform, &p);
-
-    if (lround(p.v[0]) != dev->last.valuators[0])
-        valuator_mask_set(mask, 0, lround(p.v[0]));
-    if (lround(p.v[1]) != dev->last.valuators[1])
-        valuator_mask_set(mask, 1, lround(p.v[1]));
-}
-
-/**
- * Generate a series of InternalEvents (filled into the EventList)
- * representing pointer motion, or button presses.
- *
- * events is not NULL-terminated; the return value is the number of events.
- * The DDX is responsible for allocating the event structure in the first
- * place via InitEventList() and GetMaximumEventsNum(), and for freeing it.
- *
- * In the generated events rootX/Y will be in absolute screen coords and
- * the valuator information in the absolute or relative device coords.
- *
- * last.valuators[x] of the device is always in absolute device coords.
- * last.valuators[x] of the master device is in absolute screen coords.
- *
- * master->last.valuators[x] for x > 2 is undefined.
- */
-int
-GetPointerEvents(EventList *events, DeviceIntPtr pDev, int type, int buttons,
-                 int flags, const ValuatorMask *mask_in) {
-    int num_events = 1;
-    CARD32 ms;
-    DeviceEvent *event;
-    RawDeviceEvent    *raw;
-    int x = 0, y = 0, /* device coords */
-        cx, cy; /* only screen coordinates */
-    float x_frac = 0.0, y_frac = 0.0, cx_frac, cy_frac;
-    ScreenPtr scr = miPointerGetScreen(pDev);
-    ValuatorMask mask;
-
-    /* refuse events from disabled devices */
-    if (!pDev->enabled)
-        return 0;
-
-    if (!scr)
-        return 0;
-
-    switch (type)
-    {
-        case MotionNotify:
-            if (!mask_in || valuator_mask_num_valuators(mask_in) <= 0)
-                return 0;
-            break;
-        case ButtonPress:
-        case ButtonRelease:
-            if (!pDev->button || !buttons)
-                return 0;
-            break;
-        default:
-            return 0;
-    }
-
-    ms = GetTimeInMillis(); /* before pointer update to help precision */
-
-    events = UpdateFromMaster(events, pDev, DEVCHANGE_POINTER_EVENT, &num_events);
-
-    raw = (RawDeviceEvent*)events->event;
-    events++;
-    num_events++;
-
-    valuator_mask_copy(&mask, mask_in);
-
-    init_raw(pDev, raw, ms, type, buttons);
-    set_raw_valuators(raw, &mask, raw->valuators.data_raw);
-
-    if (flags & POINTER_ABSOLUTE)
-    {
-        if (flags & POINTER_SCREEN) /* valuators are in screen coords */
-        {
-            int scaled;
-
-            if (valuator_mask_isset(&mask, 0))
-            {
-                scaled = rescaleValuatorAxis(valuator_mask_get(&mask, 0),
-                                             0.0, &x_frac, NULL,
-                                             pDev->valuator->axes + 0,
-                                             scr->width);
-                valuator_mask_set(&mask, 0, scaled);
-            }
-            if (valuator_mask_isset(&mask, 1))
-            {
-                scaled = rescaleValuatorAxis(valuator_mask_get(&mask, 1),
-                                             0.0, &y_frac, NULL,
-                                             pDev->valuator->axes + 1,
-                                             scr->height);
-                valuator_mask_set(&mask, 1, scaled);
-            }
-        }
-
-        transformAbsolute(pDev, &mask);
-        moveAbsolute(pDev, &x, &y, &mask);
-    } else {
-        if (flags & POINTER_ACCELERATE) {
-            /* FIXME: Pointer acceleration only requires X and Y values. This
-             * should be converted to masked valuators. */
-            int vals[2];
-            vals[0] = valuator_mask_isset(&mask, 0) ?
-                      valuator_mask_get(&mask, 0) : 0;
-            vals[1] = valuator_mask_isset(&mask, 1) ?
-                      valuator_mask_get(&mask, 1) : 0;
-            accelPointer(pDev, 0, 2, vals, ms);
-
-            if (valuator_mask_isset(&mask, 0))
-                valuator_mask_set(&mask, 0, vals[0]);
-            if (valuator_mask_isset(&mask, 1))
-                valuator_mask_set(&mask, 1, vals[1]);
-
-            /* The pointer acceleration code modifies the fractional part
-             * in-place, so we need to extract this information first */
-            x_frac = pDev->last.remainder[0];
-            y_frac = pDev->last.remainder[1];
-        }
-        moveRelative(pDev, &x, &y, &mask);
-    }
-
-    set_raw_valuators(raw, &mask, raw->valuators.data);
-
-    positionSprite(pDev, &x, &y, x_frac, y_frac, scr, &cx, &cy, &cx_frac, &cy_frac);
-    updateHistory(pDev, &mask, ms);
-
-    /* Update the valuators with the true value sent to the client*/
-    if (valuator_mask_isset(&mask, 0))
-        valuator_mask_set(&mask, 0, x);
-    if (valuator_mask_isset(&mask, 1))
-        valuator_mask_set(&mask, 1, y);
-
-    clipValuators(pDev, &mask);
-
-    event = (DeviceEvent*) events->event;
-    init_event(pDev, event, ms);
-
-    if (type == MotionNotify) {
-        event->type = ET_Motion;
-        event->detail.button = 0;
-    }
-    else {
-        if (type == ButtonPress) {
-            event->type = ET_ButtonPress;
-            set_button_down(pDev, buttons, BUTTON_POSTED);
-        }
-        else if (type == ButtonRelease) {
-            event->type = ET_ButtonRelease;
-            set_button_up(pDev, buttons, BUTTON_POSTED);
-        }
-        event->detail.button = buttons;
-    }
-
-    event->root_x = cx; /* root_x/y always in screen coords */
-    event->root_y = cy;
-    event->root_x_frac = cx_frac;
-    event->root_y_frac = cy_frac;
-
-    set_valuators(pDev, event, &mask);
-
-    return num_events;
-}
-
-
-/**
- * Generate ProximityIn/ProximityOut InternalEvents, accompanied by
- * valuators.
- *
- * events is not NULL-terminated; the return value is the number of events.
- * The DDX is responsible for allocating the event structure in the first
- * place via GetMaximumEventsNum(), and for freeing it.
- */
-int
-GetProximityEvents(EventList *events, DeviceIntPtr pDev, int type, const ValuatorMask *mask_in)
-{
-    int num_events = 1, i;
-    DeviceEvent *event;
-    ValuatorMask mask;
-
-    /* refuse events from disabled devices */
-    if (!pDev->enabled)
-        return 0;
-
-    /* Sanity checks. */
-    if ((type != ProximityIn && type != ProximityOut) || !mask_in)
-        return 0;
-    if (!pDev->valuator)
-        return 0;
-
-    valuator_mask_copy(&mask, mask_in);
-
-    /* ignore relative axes for proximity. */
-    for (i = 0; i < valuator_mask_size(&mask); i++)
-    {
-        if (valuator_mask_isset(&mask, i) &&
-            valuator_get_mode(pDev, i) == Relative)
-            valuator_mask_unset(&mask, i);
-    }
-
-    /* FIXME: posting proximity events with relative valuators only results
-     * in an empty event, EventToXI() will fail to convert → no event sent
-     * to client. */
-
-    events = UpdateFromMaster(events, pDev, DEVCHANGE_POINTER_EVENT, &num_events);
-
-    event = (DeviceEvent *) events->event;
-    init_event(pDev, event, GetTimeInMillis());
-    event->type = (type == ProximityIn) ? ET_ProximityIn : ET_ProximityOut;
-
-    clipValuators(pDev, &mask);
-
-    set_valuators(pDev, event, &mask);
-
-    return num_events;
-}
-
-/**
- * Synthesize a single motion event for the core pointer.
- *
- * Used in cursor functions, e.g. when cursor confinement changes, and we need
- * to shift the pointer to get it inside the new bounds.
- */
-void
-PostSyntheticMotion(DeviceIntPtr pDev,
-                    int x,
-                    int y,
-                    int screen,
-                    unsigned long time)
-{
-    DeviceEvent ev;
-
-#ifdef PANORAMIX
-    /* Translate back to the sprite screen since processInputProc
-       will translate from sprite screen to screen 0 upon reentry
-       to the DIX layer. */
-    if (!noPanoramiXExtension) {
-        x += screenInfo.screens[0]->x - screenInfo.screens[screen]->x;
-        y += screenInfo.screens[0]->y - screenInfo.screens[screen]->y;
-    }
-#endif
-
-    memset(&ev, 0, sizeof(DeviceEvent));
-    init_event(pDev, &ev, time);
-    ev.root_x = x;
-    ev.root_y = y;
-    ev.type = ET_Motion;
-    ev.time = time;
-
-    /* FIXME: MD/SD considerations? */
-    (*pDev->public.processInputProc)((InternalEvent*)&ev, pDev);
-}
+/*

+ * Copyright © 2006 Nokia Corporation

+ * Copyright © 2006-2007 Daniel Stone

+ * Copyright © 2008 Red Hat, Inc.

+ *

+ * Permission is hereby granted, free of charge, to any person obtaining a

+ * copy of this software and associated documentation files (the "Software"),

+ * to deal in the Software without restriction, including without limitation

+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,

+ * and/or sell copies of the Software, and to permit persons to whom the

+ * Software is furnished to do so, subject to the following conditions:

+ *

+ * The above copyright notice and this permission notice (including the next

+ * paragraph) shall be included in all copies or substantial portions of the

+ * Software.

+ *

+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL

+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING

+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER

+ * DEALINGS IN THE SOFTWARE.

+ *

+ * Authors: Daniel Stone <daniel@fooishbar.org>

+ *          Peter Hutterer <peter.hutterer@who-t.net>

+ */

+

+#ifdef HAVE_DIX_CONFIG_H

+#include <dix-config.h>

+#endif

+

+#include <X11/X.h>

+#include <X11/keysym.h>

+#include <X11/Xproto.h>

+#include <math.h>

+

+#include "misc.h"

+#include "resource.h"

+#include "inputstr.h"

+#include "scrnintstr.h"

+#include "cursorstr.h"

+#include "dixstruct.h"

+#include "globals.h"

+#include "dixevents.h"

+#include "mipointer.h"

+#include "eventstr.h"

+#include "eventconvert.h"

+#include "inpututils.h"

+

+#include <X11/extensions/XKBproto.h>

+#include "xkbsrv.h"

+

+#ifdef PANORAMIX

+#include "panoramiX.h"

+#include "panoramiXsrv.h"

+#endif

+

+#include <X11/extensions/XI.h>

+#include <X11/extensions/XIproto.h>

+#include <pixman.h>

+#include "exglobals.h"

+#include "exevents.h"

+#include "exglobals.h"

+#include "extnsionst.h"

+#include "listdev.h" /* for sizing up DeviceClassesChangedEvent */

+

+/* Number of motion history events to store. */

+#define MOTION_HISTORY_SIZE 256

+

+/* InputEventList is the container list for all input events generated by the

+ * DDX. The DDX is expected to call GetEventList() and then pass the list into

+ * Get{Pointer|Keyboard}Events.

+ */

+EventListPtr InputEventList = NULL;

+int InputEventListLen = 0;

+

+int

+GetEventList(EventListPtr* list)

+{

+    *list = InputEventList;

+    return InputEventListLen;

+}

+

+/**

+ * Pick some arbitrary size for Xi motion history.

+ */

+int

+GetMotionHistorySize(void)

+{

+    return MOTION_HISTORY_SIZE;

+}

+

+void

+set_button_down(DeviceIntPtr pDev, int button, int type)

+{

+    if (type == BUTTON_PROCESSED)

+        SetBit(pDev->button->down, button);

+    else

+        SetBit(pDev->button->postdown, button);

+}

+

+void

+set_button_up(DeviceIntPtr pDev, int button, int type)

+{

+    if (type == BUTTON_PROCESSED)

+        ClearBit(pDev->button->down, button);

+    else

+        ClearBit(pDev->button->postdown, button);

+}

+

+Bool

+button_is_down(DeviceIntPtr pDev, int button, int type)

+{

+    Bool ret = FALSE;

+

+    if (type & BUTTON_PROCESSED)

+        ret = ret || BitIsOn(pDev->button->down, button);

+    if (type & BUTTON_POSTED)

+        ret = ret || BitIsOn(pDev->button->postdown, button);

+

+    return ret;

+}

+

+void

+set_key_down(DeviceIntPtr pDev, int key_code, int type)

+{

+    if (type == KEY_PROCESSED)

+        SetBit(pDev->key->down, key_code);

+    else

+        SetBit(pDev->key->postdown, key_code);

+}

+

+void

+set_key_up(DeviceIntPtr pDev, int key_code, int type)

+{

+    if (type == KEY_PROCESSED)

+        ClearBit(pDev->key->down, key_code);

+    else

+        ClearBit(pDev->key->postdown, key_code);

+}

+

+Bool

+key_is_down(DeviceIntPtr pDev, int key_code, int type)

+{

+    Bool ret = FALSE;

+

+    if (type & KEY_PROCESSED)

+        ret = ret || BitIsOn(pDev->key->down, key_code);

+    if (type & KEY_POSTED)

+        ret = ret || BitIsOn(pDev->key->postdown, key_code);

+

+    return ret;

+}

+

+static Bool

+key_autorepeats(DeviceIntPtr pDev, int key_code)

+{

+    return !!(pDev->kbdfeed->ctrl.autoRepeats[key_code >> 3] &

+              (1 << (key_code & 7)));

+}

+

+static void

+init_event(DeviceIntPtr dev, DeviceEvent* event, Time ms)

+{

+    memset(event, 0, sizeof(DeviceEvent));

+    event->header = ET_Internal;

+    event->length = sizeof(DeviceEvent);

+    event->time = ms;

+    event->deviceid = dev->id;

+    event->sourceid = dev->id;

+}

+

+static void

+init_raw(DeviceIntPtr dev, RawDeviceEvent *event, Time ms, int type, int detail)

+{

+    memset(event, 0, sizeof(RawDeviceEvent));

+    event->header = ET_Internal;

+    event->length = sizeof(RawDeviceEvent);

+    event->type = ET_RawKeyPress - ET_KeyPress + type;

+    event->time = ms;

+    event->deviceid = dev->id;

+    event->sourceid = dev->id;

+    event->detail.button = detail;

+}

+

+static void

+set_raw_valuators(RawDeviceEvent *event, ValuatorMask *mask, int32_t* data)

+{

+    int i;

+

+    for (i = 0; i < valuator_mask_size(mask); i++)

+    {

+        if (valuator_mask_isset(mask, i))

+        {

+            SetBit(event->valuators.mask, i);

+            data[i] = valuator_mask_get(mask, i);

+        }

+    }

+}

+

+

+static void

+set_valuators(DeviceIntPtr dev, DeviceEvent* event, ValuatorMask *mask)

+{

+    int i;

+

+    for (i = 0; i < valuator_mask_size(mask); i++)

+    {

+        if (valuator_mask_isset(mask, i))

+        {

+            SetBit(event->valuators.mask, i);

+            if (valuator_get_mode(dev, i) == Absolute)

+                SetBit(event->valuators.mode, i);

+            event->valuators.data[i] = valuator_mask_get(mask, i);

+            event->valuators.data_frac[i] =

+                dev->last.remainder[i] * (1 << 16) * (1 << 16);

+        }

+    }

+}

+

+void

+CreateClassesChangedEvent(EventList* event,

+                          DeviceIntPtr master,

+                          DeviceIntPtr slave,

+                          int type)

+{

+    int i;

+    DeviceChangedEvent *dce;

+    CARD32 ms = GetTimeInMillis();

+

+    dce = (DeviceChangedEvent*)event->event;

+    memset(dce, 0, sizeof(DeviceChangedEvent));

+    dce->deviceid = slave->id;

+    dce->masterid = master->id;

+    dce->header = ET_Internal;

+    dce->length = sizeof(DeviceChangedEvent);

+    dce->type = ET_DeviceChanged;

+    dce->time = ms;

+    dce->flags = type;

+    dce->flags |= DEVCHANGE_SLAVE_SWITCH;

+    dce->sourceid = slave->id;

+

+    if (slave->button)

+    {

+        dce->buttons.num_buttons = slave->button->numButtons;

+        for (i = 0; i < dce->buttons.num_buttons; i++)

+            dce->buttons.names[i] = slave->button->labels[i];

+    }

+    if (slave->valuator)

+    {

+        dce->num_valuators = slave->valuator->numAxes;

+        for (i = 0; i < dce->num_valuators; i++)

+        {

+            dce->valuators[i].min = slave->valuator->axes[i].min_value;

+            dce->valuators[i].max = slave->valuator->axes[i].max_value;

+            dce->valuators[i].resolution = slave->valuator->axes[i].resolution;

+            dce->valuators[i].mode = slave->valuator->axes[i].mode;

+            dce->valuators[i].name = slave->valuator->axes[i].label;

+        }

+    }

+    if (slave->key)

+    {

+        dce->keys.min_keycode = slave->key->xkbInfo->desc->min_key_code;

+        dce->keys.max_keycode = slave->key->xkbInfo->desc->max_key_code;

+    }

+}

+

+/**

+ * Rescale the coord between the two axis ranges.

+ */

+static int

+rescaleValuatorAxis(int coord, float remainder, float *remainder_return, AxisInfoPtr from, AxisInfoPtr to,

+                    int defmax)

+{

+    int fmin = 0, tmin = 0, fmax = defmax, tmax = defmax, coord_return;

+    float value;

+

+    if(from && from->min_value < from->max_value) {

+        fmin = from->min_value;

+        fmax = from->max_value;

+    }

+    if(to && to->min_value < to->max_value) {

+        tmin = to->min_value;

+        tmax = to->max_value;

+    }

+

+    if(fmin == tmin && fmax == tmax) {

+        if (remainder_return)

+            *remainder_return = remainder;

+        return coord;

+    }

+

+    if(fmax == fmin) { /* avoid division by 0 */

+        if (remainder_return)

+            *remainder_return = 0.0;

+        return 0;

+    }

+

+    value = (coord + remainder - fmin) * (tmax - tmin) / (fmax - fmin) + tmin;

+    coord_return = lroundf(value);

+    if (remainder_return)

+        *remainder_return = value - coord_return;

+    return coord_return;

+}

+

+/**

+ * Update all coordinates when changing to a different SD

+ * to ensure that relative reporting will work as expected

+ * without loss of precision.

+ *

+ * pDev->last.valuators will be in absolute device coordinates after this

+ * function.

+ */

+static void

+updateSlaveDeviceCoords(DeviceIntPtr master, DeviceIntPtr pDev)

+{

+    ScreenPtr scr = miPointerGetScreen(pDev);

+    int i;

+    DeviceIntPtr lastSlave;

+

+    /* master->last.valuators[0]/[1] is in screen coords and the actual

+     * position of the pointer */

+    pDev->last.valuators[0] = master->last.valuators[0];

+    pDev->last.valuators[1] = master->last.valuators[1];

+

+    if (!pDev->valuator)

+        return;

+

+    /* scale back to device coordinates */

+    if(pDev->valuator->numAxes > 0)

+        pDev->last.valuators[0] = rescaleValuatorAxis(pDev->last.valuators[0], pDev->last.remainder[0],

+                        &pDev->last.remainder[0], NULL, pDev->valuator->axes + 0, scr->width);

+    if(pDev->valuator->numAxes > 1)

+        pDev->last.valuators[1] = rescaleValuatorAxis(pDev->last.valuators[1], pDev->last.remainder[1],

+                        &pDev->last.remainder[1], NULL, pDev->valuator->axes + 1, scr->height);

+

+    /* calculate the other axis as well based on info from the old

+     * slave-device. If the old slave had less axes than this one,

+     * last.valuators is reset to 0.

+     */

+    if ((lastSlave = master->last.slave) && lastSlave->valuator) {

+        for (i = 2; i < pDev->valuator->numAxes; i++) {

+            if (i >= lastSlave->valuator->numAxes)

+                pDev->last.valuators[i] = 0;

+            else

+                pDev->last.valuators[i] =

+                    rescaleValuatorAxis(pDev->last.valuators[i],

+                            pDev->last.remainder[i],

+                            &pDev->last.remainder[i],

+                            lastSlave->valuator->axes + i,

+                            pDev->valuator->axes + i, 0);

+        }

+    }

+

+}

+

+/**

+ * Allocate the motion history buffer.

+ */

+void

+AllocateMotionHistory(DeviceIntPtr pDev)

+{

+    int size;

+    free(pDev->valuator->motion);

+

+    if (pDev->valuator->numMotionEvents < 1)

+        return;

+

+    /* An MD must have a motion history size large enough to keep all

+     * potential valuators, plus the respective range of the valuators.

+     * 3 * INT32 for (min_val, max_val, curr_val))

+     */

+    if (IsMaster(pDev))

+        size = sizeof(INT32) * 3 * MAX_VALUATORS;

+    else {

+        ValuatorClassPtr v = pDev->valuator;

+        int numAxes;

+        /* XI1 doesn't understand mixed mode devices */

+        for (numAxes = 0; numAxes < v->numAxes; numAxes++)

+            if (valuator_get_mode(pDev, numAxes) != valuator_get_mode(pDev, 0))

+                break;

+        size = sizeof(INT32) * numAxes;

+    }

+

+    size += sizeof(Time);

+

+    pDev->valuator->motion = calloc(pDev->valuator->numMotionEvents, size);

+    pDev->valuator->first_motion = 0;

+    pDev->valuator->last_motion = 0;

+    if (!pDev->valuator->motion)

+        ErrorF("[dix] %s: Failed to alloc motion history (%d bytes).\n",

+                pDev->name, size * pDev->valuator->numMotionEvents);

+}

+

+/**

+ * Dump the motion history between start and stop into the supplied buffer.

+ * Only records the event for a given screen in theory, but in practice, we

+ * sort of ignore this.

+ *

+ * If core is set, we only generate x/y, in INT16, scaled to screen coords.

+ */

+int

+GetMotionHistory(DeviceIntPtr pDev, xTimecoord **buff, unsigned long start,

+                 unsigned long stop, ScreenPtr pScreen, BOOL core)

+{

+    char *ibuff = NULL, *obuff;

+    int i = 0, ret = 0;

+    int j, coord;

+    Time current;

+    /* The size of a single motion event. */

+    int size;

+    int dflt;

+    AxisInfo from, *to; /* for scaling */

+    INT32 *ocbuf, *icbuf; /* pointer to coordinates for copying */

+    INT16 *corebuf;

+    AxisInfo core_axis = {0};

+

+    if (!pDev->valuator || !pDev->valuator->numMotionEvents)

+        return 0;

+

+    if (core && !pScreen)

+        return 0;

+

+    if (IsMaster(pDev))

+        size = (sizeof(INT32) * 3 * MAX_VALUATORS) + sizeof(Time);

+    else

+        size = (sizeof(INT32) * pDev->valuator->numAxes) + sizeof(Time);

+

+    *buff = malloc(size * pDev->valuator->numMotionEvents);

+    if (!(*buff))

+        return 0;

+    obuff = (char *)*buff;

+

+    for (i = pDev->valuator->first_motion;

+         i != pDev->valuator->last_motion;

+         i = (i + 1) % pDev->valuator->numMotionEvents) {

+        /* We index the input buffer by which element we're accessing, which

+         * is not monotonic, and the output buffer by how many events we've

+         * written so far. */

+        ibuff = (char *) pDev->valuator->motion + (i * size);

+        memcpy(&current, ibuff, sizeof(Time));

+

+        if (current > stop) {

+            return ret;

+        }

+        else if (current >= start) {

+            if (core)

+            {

+                memcpy(obuff, ibuff, sizeof(Time)); /* copy timestamp */

+

+                icbuf = (INT32*)(ibuff + sizeof(Time));

+                corebuf = (INT16*)(obuff + sizeof(Time));

+

+                /* fetch x coordinate + range */

+                memcpy(&from.min_value, icbuf++, sizeof(INT32));

+                memcpy(&from.max_value, icbuf++, sizeof(INT32));

+                memcpy(&coord, icbuf++, sizeof(INT32));

+

+                /* scale to screen coords */

+                to = &core_axis;

+                to->max_value = pScreen->width;

+                coord = rescaleValuatorAxis(coord, 0.0, NULL, &from, to, pScreen->width);

+

+                memcpy(corebuf, &coord, sizeof(INT16));

+                corebuf++;

+

+                /* fetch y coordinate + range */

+                memcpy(&from.min_value, icbuf++, sizeof(INT32));

+                memcpy(&from.max_value, icbuf++, sizeof(INT32));

+                memcpy(&coord, icbuf++, sizeof(INT32));

+

+                to->max_value = pScreen->height;

+                coord = rescaleValuatorAxis(coord, 0.0, NULL, &from, to, pScreen->height);

+                memcpy(corebuf, &coord, sizeof(INT16));

+

+            } else if (IsMaster(pDev))

+            {

+                memcpy(obuff, ibuff, sizeof(Time)); /* copy timestamp */

+

+                ocbuf = (INT32*)(obuff + sizeof(Time));

+                icbuf = (INT32*)(ibuff + sizeof(Time));

+                for (j = 0; j < MAX_VALUATORS; j++)

+                {

+                    if (j >= pDev->valuator->numAxes)

+                        break;

+

+                    /* fetch min/max/coordinate */

+                    memcpy(&from.min_value, icbuf++, sizeof(INT32));

+                    memcpy(&from.max_value, icbuf++, sizeof(INT32));

+                    memcpy(&coord, icbuf++, sizeof(INT32));

+

+                    to = (j < pDev->valuator->numAxes) ? &pDev->valuator->axes[j] : NULL;

+

+                    /* x/y scaled to screen if no range is present */

+                    if (j == 0 && (from.max_value < from.min_value))

+                        from.max_value = pScreen->width;

+                    else if (j == 1 && (from.max_value < from.min_value))

+                        from.max_value = pScreen->height;

+

+                    if (j == 0 && (to->max_value < to->min_value))

+                        dflt = pScreen->width;

+                    else if (j == 1 && (to->max_value < to->min_value))

+                        dflt = pScreen->height;

+                    else

+                        dflt = 0;

+

+                    /* scale from stored range into current range */

+                    coord = rescaleValuatorAxis(coord, 0.0, NULL, &from, to, 0);

+                    memcpy(ocbuf, &coord, sizeof(INT32));

+                    ocbuf++;

+                }

+            } else

+                memcpy(obuff, ibuff, size);

+

+            /* don't advance by size here. size may be different to the

+             * actually written size if the MD has less valuators than MAX */

+            if (core)

+                obuff += sizeof(INT32) + sizeof(Time);

+            else

+                obuff += (sizeof(INT32) * pDev->valuator->numAxes) + sizeof(Time);

+            ret++;

+        }

+    }

+

+    return ret;

+}

+

+

+/**

+ * Update the motion history for a specific device, with the list of

+ * valuators.

+ *

+ * Layout of the history buffer:

+ *   for SDs: [time] [val0] [val1] ... [valn]

+ *   for MDs: [time] [min_val0] [max_val0] [val0] [min_val1] ... [valn]

+ *

+ * For events that have some valuators unset:

+ *      min_val == max_val == val == 0.

+ */

+static void

+updateMotionHistory(DeviceIntPtr pDev, CARD32 ms, ValuatorMask *mask,

+                    int *valuators)

+{

+    char *buff = (char *) pDev->valuator->motion;

+    ValuatorClassPtr v;

+    int i;

+

+    if (!pDev->valuator->numMotionEvents)

+        return;

+

+    v = pDev->valuator;

+    if (IsMaster(pDev))

+    {

+        buff += ((sizeof(INT32) * 3 * MAX_VALUATORS) + sizeof(CARD32)) *

+                v->last_motion;

+

+        memcpy(buff, &ms, sizeof(Time));

+        buff += sizeof(Time);

+

+        memset(buff, 0, sizeof(INT32) * 3 * MAX_VALUATORS);

+

+        for (i = 0; i < v->numAxes; i++)

+        {

+            /* XI1 doesn't support mixed mode devices */

+            if (valuator_get_mode(pDev, i) != valuator_get_mode(pDev, 0))

+                break;

+            if (valuator_mask_size(mask) <= i || !valuator_mask_isset(mask, i))

+            {

+                buff += 3 * sizeof(INT32);

+                continue;

+            }

+            memcpy(buff, &v->axes[i].min_value, sizeof(INT32));

+            buff += sizeof(INT32);

+            memcpy(buff, &v->axes[i].max_value, sizeof(INT32));

+            buff += sizeof(INT32);

+            memcpy(buff, &valuators[i], sizeof(INT32));

+            buff += sizeof(INT32);

+        }

+    } else

+    {

+

+        buff += ((sizeof(INT32) * pDev->valuator->numAxes) + sizeof(CARD32)) *

+            pDev->valuator->last_motion;

+

+        memcpy(buff, &ms, sizeof(Time));

+        buff += sizeof(Time);

+

+        memset(buff, 0, sizeof(INT32) * pDev->valuator->numAxes);

+

+        for (i = 0; i < MAX_VALUATORS; i++)

+        {

+            if (valuator_mask_size(mask) <= i || !valuator_mask_isset(mask, i))

+            {

+                buff += sizeof(INT32);

+                continue;

+            }

+            memcpy(buff, &valuators[i], sizeof(INT32));

+            buff += sizeof(INT32);

+        }

+    }

+

+    pDev->valuator->last_motion = (pDev->valuator->last_motion + 1) %

+        pDev->valuator->numMotionEvents;

+    /* If we're wrapping around, just keep the circular buffer going. */

+    if (pDev->valuator->first_motion == pDev->valuator->last_motion)

+        pDev->valuator->first_motion = (pDev->valuator->first_motion + 1) %

+                                       pDev->valuator->numMotionEvents;

+

+    return;

+}

+

+

+/**

+ * Returns the maximum number of events GetKeyboardEvents,

+ * GetKeyboardValuatorEvents, and GetPointerEvents will ever return.

+ *

+ * This MUST be absolutely constant, from init until exit.

+ */

+int

+GetMaximumEventsNum(void) {

+    /* One raw event

+     * One device event

+     * One possible device changed event

+     */

+    return 3;

+}

+

+

+/**

+ * Clip an axis to its bounds, which are declared in the call to

+ * InitValuatorAxisClassStruct.

+ */

+static void

+clipAxis(DeviceIntPtr pDev, int axisNum, int *val)

+{

+    AxisInfoPtr axis;

+

+    if (axisNum >= pDev->valuator->numAxes)

+        return;

+

+    axis = pDev->valuator->axes + axisNum;

+

+    /* If a value range is defined, clip. If not, do nothing */

+    if (axis->max_value <= axis->min_value)

+        return;

+

+    if (*val < axis->min_value)

+        *val = axis->min_value;

+    if (*val > axis->max_value)

+        *val = axis->max_value;

+}

+

+/**

+ * Clip every axis in the list of valuators to its bounds.

+ */

+static void

+clipValuators(DeviceIntPtr pDev, ValuatorMask *mask)

+{

+    int i;

+

+    for (i = 0; i < valuator_mask_size(mask); i++)

+        if (valuator_mask_isset(mask, i))

+        {

+            int val = valuator_mask_get(mask, i);

+            clipAxis(pDev, i, &val);

+            valuator_mask_set(mask, i, val);

+        }

+}

+

+/**

+ * Create the DCCE event (does not update the master's device state yet, this

+ * is done in the event processing).

+ * Pull in the coordinates from the MD if necessary.

+ *

+ * @param events Pointer to a pre-allocated event list.

+ * @param dev The slave device that generated an event.

+ * @param type Either DEVCHANGE_POINTER_EVENT and/or DEVCHANGE_KEYBOARD_EVENT

+ * @param num_events The current number of events, returns the number of

+ *        events if a DCCE was generated.

+ * @return The updated @events pointer.

+ */

+EventListPtr

+UpdateFromMaster(EventListPtr events, DeviceIntPtr dev, int type, int *num_events)

+{

+    DeviceIntPtr master;

+

+    master = GetMaster(dev, (type & DEVCHANGE_POINTER_EVENT) ?  MASTER_POINTER : MASTER_KEYBOARD);

+

+    if (master && master->last.slave != dev)

+    {

+        CreateClassesChangedEvent(events, master, dev, type);

+        if (IsPointerDevice(master))

+        {

+            updateSlaveDeviceCoords(master, dev);

+            master->last.numValuators = dev->last.numValuators;

+        }

+        master->last.slave = dev;

+        (*num_events)++;

+        events++;

+    }

+    return events;

+}

+

+/**

+ * Move the device's pointer to the position given in the valuators.

+ *

+ * @param dev The device which's pointer is to be moved.

+ * @param x Returns the x position of the pointer after the move.

+ * @param y Returns the y position of the pointer after the move.

+ * @param mask Bit mask of valid valuators.

+ * @param valuators Valuator data for each axis between @first and

+ *        @first+@num.

+ */

+static void

+moveAbsolute(DeviceIntPtr dev, int *x, int *y, ValuatorMask *mask)

+{

+    int i;

+

+    if (valuator_mask_isset(mask, 0))

+        *x = valuator_mask_get(mask, 0);

+    else

+        *x = dev->last.valuators[0];

+

+    if (valuator_mask_isset(mask, 1))

+        *y = valuator_mask_get(mask, 1);

+    else

+        *y = dev->last.valuators[1];

+

+    clipAxis(dev, 0, x);

+    clipAxis(dev, 1, y);

+

+    for (i = 2; i < valuator_mask_size(mask); i++)

+    {

+        if (valuator_mask_isset(mask, i))

+        {

+            dev->last.valuators[i] = valuator_mask_get(mask, i);

+            clipAxis(dev, i, &dev->last.valuators[i]);

+        }

+    }

+}

+

+/**

+ * Move the device's pointer by the values given in @valuators.

+ *

+ * @param dev The device which's pointer is to be moved.

+ * @param x Returns the x position of the pointer after the move.

+ * @param y Returns the y position of the pointer after the move.

+ * @param mask Bit mask of valid valuators.

+ * @param valuators Valuator data for each axis between @first and

+ *        @first+@num.

+ */

+static void

+moveRelative(DeviceIntPtr dev, int *x, int *y, ValuatorMask *mask)

+{

+    int i;

+

+    *x = dev->last.valuators[0];

+    *y = dev->last.valuators[1];

+

+    if (valuator_mask_isset(mask, 0))

+        *x += valuator_mask_get(mask, 0);

+

+    if (valuator_mask_isset(mask, 1))

+        *y += valuator_mask_get(mask, 1);

+

+    /* if attached, clip both x and y to the defined limits (usually

+     * co-ord space limit). If it is attached, we need x/y to go over the

+     * limits to be able to change screens. */

+    if (dev->valuator && (IsMaster(dev) || !IsFloating(dev))) {

+        if (valuator_get_mode(dev, 0) == Absolute)

+            clipAxis(dev, 0, x);

+        if (valuator_get_mode(dev, 1) == Absolute)

+            clipAxis(dev, 1, y);

+    }

+

+    /* calc other axes, clip, drop back into valuators */

+    for (i = 2; i < valuator_mask_size(mask); i++)

+    {

+        if (valuator_mask_isset(mask, i))

+        {

+            dev->last.valuators[i] += valuator_mask_get(mask, i);

+            if (valuator_get_mode(dev, i) == Absolute)

+                clipAxis(dev, i, &dev->last.valuators[i]);

+            valuator_mask_set(mask, i, dev->last.valuators[i]);

+        }

+    }

+}

+

+/**

+ * Accelerate the data in valuators based on the device's acceleration scheme.

+ *

+ * @param dev The device which's pointer is to be moved.

+ * @param valuators Valuator mask

+ * @param ms Current time.

+ */

+static void

+accelPointer(DeviceIntPtr dev, ValuatorMask* valuators, CARD32 ms)

+{

+    if (dev->valuator->accelScheme.AccelSchemeProc)

+        dev->valuator->accelScheme.AccelSchemeProc(dev, valuators, ms);

+}

+

+/**

+ * If we have HW cursors, this actually moves the visible sprite. If not, we

+ * just do all the screen crossing, etc.

+ *

+ * We scale from device to screen coordinates here, call

+ * miPointerSetPosition() and then scale back into device coordinates (if

+ * needed). miPSP will change x/y if the screen was crossed.

+ *

+ * The coordinates provided are always absolute. The parameter mode whether

+ * it was relative or absolute movement that landed us at those coordinates.

+ *

+ * @param dev The device to be moved.

+ * @param mode Movement mode (Absolute or Relative)

+ * @param x Pointer to current x-axis value, may be modified.

+ * @param y Pointer to current y-axis value, may be modified.

+ * @param x_frac Fractional part of current x-axis value, may be modified.

+ * @param y_frac Fractional part of current y-axis value, may be modified.

+ * @param scr Screen the device's sprite is currently on.

+ * @param screenx Screen x coordinate the sprite is on after the update.

+ * @param screeny Screen y coordinate the sprite is on after the update.

+ * @param screenx_frac Fractional part of screen x coordinate, as above.

+ * @param screeny_frac Fractional part of screen y coordinate, as above.

+ */

+static void

+positionSprite(DeviceIntPtr dev, int mode,

+               int *x, int *y, float x_frac, float y_frac,

+               ScreenPtr scr, int *screenx, int *screeny, float *screenx_frac, float *screeny_frac)

+{

+    int old_screenx, old_screeny;

+

+    /* scale x&y to screen */

+    if (dev->valuator && dev->valuator->numAxes > 0) {

+        *screenx = rescaleValuatorAxis(*x, x_frac, screenx_frac,

+                dev->valuator->axes + 0, NULL, scr->width);

+    } else {

+        *screenx = dev->last.valuators[0];

+        *screenx_frac = dev->last.remainder[0];

+    }

+

+    if (dev->valuator && dev->valuator->numAxes > 1) {

+        *screeny = rescaleValuatorAxis(*y, y_frac, screeny_frac,

+                dev->valuator->axes + 1, NULL, scr->height);

+    } else {

+        *screeny = dev->last.valuators[1];

+        *screeny_frac = dev->last.remainder[1];

+    }

+

+    /* Hit the left screen edge? */

+    if (*screenx <= 0 && *screenx_frac < 0.0f)

+    {

+        *screenx_frac = 0.0f;

+        x_frac = 0.0f;

+    }

+    if (*screeny <= 0 && *screeny_frac < 0.0f)

+    {

+        *screeny_frac = 0.0f;

+        y_frac = 0.0f;

+    }

+

+

+    old_screenx = *screenx;

+    old_screeny = *screeny;

+    /* This takes care of crossing screens for us, as well as clipping

+     * to the current screen. */

+    miPointerSetPosition(dev, mode, screenx, screeny);

+

+    if(!IsMaster(dev) || !IsFloating(dev)) {

+        DeviceIntPtr master = GetMaster(dev, MASTER_POINTER);

+        master->last.valuators[0] = *screenx;

+        master->last.valuators[1] = *screeny;

+        master->last.remainder[0] = *screenx_frac;

+        master->last.remainder[1] = *screeny_frac;

+    }

+

+    if (dev->valuator)

+    {

+        /* Crossed screen? Scale back to device coordiantes */

+        if(*screenx != old_screenx)

+        {

+            scr = miPointerGetScreen(dev);

+            *x = rescaleValuatorAxis(*screenx, *screenx_frac, &x_frac, NULL,

+                                    dev->valuator->axes + 0, scr->width);

+        }

+        if(*screeny != old_screeny)

+        {

+            scr = miPointerGetScreen(dev);

+            *y = rescaleValuatorAxis(*screeny, *screeny_frac, &y_frac, NULL,

+                                     dev->valuator->axes + 1, scr->height);

+        }

+    }

+

+    /* dropy x/y (device coordinates) back into valuators for next event */

+    dev->last.valuators[0] = *x;

+    dev->last.valuators[1] = *y;

+    dev->last.remainder[0] = x_frac;

+    dev->last.remainder[1] = y_frac;

+}

+

+/**

+ * Update the motion history for the device and (if appropriate) for its

+ * master device.

+ * @param dev Slave device to update.

+ * @param mask Bit mask of valid valuators to append to history.

+ * @param num Total number of valuators to append to history.

+ * @param ms Current time

+ */

+static void

+updateHistory(DeviceIntPtr dev, ValuatorMask *mask, CARD32 ms)

+{

+    if (!dev->valuator)

+        return;

+

+    updateMotionHistory(dev, ms, mask, dev->last.valuators);

+    if(!IsMaster(dev) || !IsFloating(dev))

+    {

+        DeviceIntPtr master = GetMaster(dev, MASTER_POINTER);

+        updateMotionHistory(master, ms, mask, dev->last.valuators);

+    }

+}

+

+/**

+ * Convenience wrapper around GetKeyboardValuatorEvents, that takes no

+ * valuators.

+ */

+int

+GetKeyboardEvents(EventList *events, DeviceIntPtr pDev, int type, int key_code) {

+    ValuatorMask mask;

+

+    valuator_mask_zero(&mask);

+    return GetKeyboardValuatorEvents(events, pDev, type, key_code, &mask);

+}

+

+

+/**

+ * Returns a set of InternalEvents for KeyPress/KeyRelease, optionally

+ * also with valuator events.

+ *

+ * events is not NULL-terminated; the return value is the number of events.

+ * The DDX is responsible for allocating the event structure in the first

+ * place via GetMaximumEventsNum(), and for freeing it.

+ */

+int

+GetKeyboardValuatorEvents(EventList *events, DeviceIntPtr pDev, int type,

+                          int key_code, const ValuatorMask *mask_in) {

+    int num_events = 0;

+    CARD32 ms = 0;

+    DeviceEvent *event;

+    RawDeviceEvent *raw;

+    ValuatorMask mask;

+

+    /* refuse events from disabled devices */

+    if (!pDev->enabled)

+        return 0;

+

+    if (!events ||!pDev->key || !pDev->focus || !pDev->kbdfeed ||

+       (type != KeyPress && type != KeyRelease) ||

+       (key_code < 8 || key_code > 255))

+        return 0;

+

+    num_events = 1;

+

+    events = UpdateFromMaster(events, pDev, DEVCHANGE_KEYBOARD_EVENT, &num_events);

+

+    /* Handle core repeating, via press/release/press/release. */

+    if (type == KeyPress && key_is_down(pDev, key_code, KEY_POSTED)) {

+        /* If autorepeating is disabled either globally or just for that key,

+         * or we have a modifier, don't generate a repeat event. */

+        if (!pDev->kbdfeed->ctrl.autoRepeat ||

+            !key_autorepeats(pDev, key_code) ||

+            pDev->key->xkbInfo->desc->map->modmap[key_code])

+            return 0;

+    }

+

+    ms = GetTimeInMillis();

+

+    raw = (RawDeviceEvent*)events->event;

+    events++;

+    num_events++;

+

+    valuator_mask_copy(&mask, mask_in);

+

+    init_raw(pDev, raw, ms, type, key_code);

+    set_raw_valuators(raw, &mask, raw->valuators.data_raw);

+

+    clipValuators(pDev, &mask);

+

+    set_raw_valuators(raw, &mask, raw->valuators.data);

+

+    event = (DeviceEvent*) events->event;

+    init_event(pDev, event, ms);

+    event->detail.key = key_code;

+

+    if (type == KeyPress) {

+        event->type = ET_KeyPress;

+	set_key_down(pDev, key_code, KEY_POSTED);

+    }

+    else if (type == KeyRelease) {

+        event->type = ET_KeyRelease;

+	set_key_up(pDev, key_code, KEY_POSTED);

+    }

+

+    clipValuators(pDev, &mask);

+

+    set_valuators(pDev, event, &mask);

+

+    return num_events;

+}

+

+/**

+ * Initialize an event list and fill with 32 byte sized events.

+ * This event list is to be passed into GetPointerEvents() and

+ * GetKeyboardEvents().

+ *

+ * @param num_events Number of elements in list.

+ */

+EventListPtr

+InitEventList(int num_events)

+{

+    EventListPtr events;

+    int i;

+

+    events = (EventListPtr)calloc(num_events, sizeof(EventList));

+    if (!events)

+        return NULL;

+

+    for (i = 0; i < num_events; i++)

+    {

+        events[i].evlen = sizeof(InternalEvent);

+        events[i].event = calloc(1, sizeof(InternalEvent));

+        if (!events[i].event)

+        {

+            /* rollback */

+            while(i--)

+                free(events[i].event);

+            free(events);

+            events = NULL;

+            break;

+        }

+    }

+

+    return events;

+}

+

+/**

+ * Free an event list.

+ *

+ * @param list The list to be freed.

+ * @param num_events Number of elements in list.

+ */

+void

+FreeEventList(EventListPtr list, int num_events)

+{

+    if (!list)

+        return;

+    while(num_events--)

+        free(list[num_events].event);

+    free(list);

+}

+

+static void

+transformAbsolute(DeviceIntPtr dev, ValuatorMask *mask)

+{

+    struct pixman_f_vector p;

+

+    /* p' = M * p in homogeneous coordinates */

+    p.v[0] = (valuator_mask_isset(mask, 0) ? valuator_mask_get(mask, 0) :

+              dev->last.valuators[0]);

+    p.v[1] = (valuator_mask_isset(mask, 1) ? valuator_mask_get(mask, 1) :

+              dev->last.valuators[1]);

+    p.v[2] = 1.0;

+

+    pixman_f_transform_point(&dev->transform, &p);

+

+    if (lround(p.v[0]) != dev->last.valuators[0])

+        valuator_mask_set(mask, 0, lround(p.v[0]));

+    if (lround(p.v[1]) != dev->last.valuators[1])

+        valuator_mask_set(mask, 1, lround(p.v[1]));

+}

+

+/**

+ * Generate a series of InternalEvents (filled into the EventList)

+ * representing pointer motion, or button presses.

+ *

+ * events is not NULL-terminated; the return value is the number of events.

+ * The DDX is responsible for allocating the event structure in the first

+ * place via InitEventList() and GetMaximumEventsNum(), and for freeing it.

+ *

+ * In the generated events rootX/Y will be in absolute screen coords and

+ * the valuator information in the absolute or relative device coords.

+ *

+ * last.valuators[x] of the device is always in absolute device coords.

+ * last.valuators[x] of the master device is in absolute screen coords.

+ *

+ * master->last.valuators[x] for x > 2 is undefined.

+ */

+int

+GetPointerEvents(EventList *events, DeviceIntPtr pDev, int type, int buttons,

+                 int flags, const ValuatorMask *mask_in) {

+    int num_events = 1;

+    CARD32 ms;

+    DeviceEvent *event;

+    RawDeviceEvent    *raw;

+    int x = 0, y = 0, /* device coords */

+        cx, cy; /* only screen coordinates */

+    float x_frac = 0.0, y_frac = 0.0, cx_frac, cy_frac;

+    ScreenPtr scr = miPointerGetScreen(pDev);

+    ValuatorMask mask;

+

+    /* refuse events from disabled devices */

+    if (!pDev->enabled)

+        return 0;

+

+    if (!scr)

+        return 0;

+

+    switch (type)

+    {

+        case MotionNotify:

+            if (!mask_in || valuator_mask_num_valuators(mask_in) <= 0)

+                return 0;

+            break;

+        case ButtonPress:

+        case ButtonRelease:

+            if (!pDev->button || !buttons)

+                return 0;

+            break;

+        default:

+            return 0;

+    }

+

+    ms = GetTimeInMillis(); /* before pointer update to help precision */

+

+    events = UpdateFromMaster(events, pDev, DEVCHANGE_POINTER_EVENT, &num_events);

+

+    raw = (RawDeviceEvent*)events->event;

+    events++;

+    num_events++;

+

+    valuator_mask_copy(&mask, mask_in);

+

+    init_raw(pDev, raw, ms, type, buttons);

+    set_raw_valuators(raw, &mask, raw->valuators.data_raw);

+

+    if (flags & POINTER_ABSOLUTE)

+    {

+        if (flags & POINTER_SCREEN) /* valuators are in screen coords */

+        {

+            int scaled;

+

+            if (valuator_mask_isset(&mask, 0))

+            {

+                scaled = rescaleValuatorAxis(valuator_mask_get(&mask, 0),

+                                             0.0, &x_frac, NULL,

+                                             pDev->valuator->axes + 0,

+                                             scr->width);

+                valuator_mask_set(&mask, 0, scaled);

+            }

+            if (valuator_mask_isset(&mask, 1))

+            {

+                scaled = rescaleValuatorAxis(valuator_mask_get(&mask, 1),

+                                             0.0, &y_frac, NULL,

+                                             pDev->valuator->axes + 1,

+                                             scr->height);

+                valuator_mask_set(&mask, 1, scaled);

+            }

+        }

+

+        transformAbsolute(pDev, &mask);

+        moveAbsolute(pDev, &x, &y, &mask);

+    } else {

+        if (flags & POINTER_ACCELERATE) {

+            accelPointer(pDev, &mask, ms);

+            /* The pointer acceleration code modifies the fractional part

+             * in-place, so we need to extract this information first */

+            x_frac = pDev->last.remainder[0];

+            y_frac = pDev->last.remainder[1];

+        }

+        moveRelative(pDev, &x, &y, &mask);

+    }

+

+    set_raw_valuators(raw, &mask, raw->valuators.data);

+

+    positionSprite(pDev, (flags & POINTER_ABSOLUTE) ? Absolute : Relative,

+                   &x, &y, x_frac, y_frac, scr, &cx, &cy, &cx_frac, &cy_frac);

+    updateHistory(pDev, &mask, ms);

+

+    /* Update the valuators with the true value sent to the client*/

+    if (valuator_mask_isset(&mask, 0))

+        valuator_mask_set(&mask, 0, x);

+    if (valuator_mask_isset(&mask, 1))

+        valuator_mask_set(&mask, 1, y);

+

+    clipValuators(pDev, &mask);

+

+    event = (DeviceEvent*) events->event;

+    init_event(pDev, event, ms);

+

+    if (type == MotionNotify) {

+        event->type = ET_Motion;

+        event->detail.button = 0;

+    }

+    else {

+        if (type == ButtonPress) {

+            event->type = ET_ButtonPress;

+            set_button_down(pDev, buttons, BUTTON_POSTED);

+        }

+        else if (type == ButtonRelease) {

+            event->type = ET_ButtonRelease;

+            set_button_up(pDev, buttons, BUTTON_POSTED);

+        }

+        event->detail.button = buttons;

+    }

+

+    event->root_x = cx; /* root_x/y always in screen coords */

+    event->root_y = cy;

+    event->root_x_frac = cx_frac;

+    event->root_y_frac = cy_frac;

+

+    set_valuators(pDev, event, &mask);

+

+    return num_events;

+}

+

+

+/**

+ * Generate ProximityIn/ProximityOut InternalEvents, accompanied by

+ * valuators.

+ *

+ * events is not NULL-terminated; the return value is the number of events.

+ * The DDX is responsible for allocating the event structure in the first

+ * place via GetMaximumEventsNum(), and for freeing it.

+ */

+int

+GetProximityEvents(EventList *events, DeviceIntPtr pDev, int type, const ValuatorMask *mask_in)

+{

+    int num_events = 1, i;

+    DeviceEvent *event;

+    ValuatorMask mask;

+

+    /* refuse events from disabled devices */

+    if (!pDev->enabled)

+        return 0;

+

+    /* Sanity checks. */

+    if ((type != ProximityIn && type != ProximityOut) || !mask_in)

+        return 0;

+    if (!pDev->valuator)

+        return 0;

+

+    valuator_mask_copy(&mask, mask_in);

+

+    /* ignore relative axes for proximity. */

+    for (i = 0; i < valuator_mask_size(&mask); i++)

+    {

+        if (valuator_mask_isset(&mask, i) &&

+            valuator_get_mode(pDev, i) == Relative)

+            valuator_mask_unset(&mask, i);

+    }

+

+    /* FIXME: posting proximity events with relative valuators only results

+     * in an empty event, EventToXI() will fail to convert → no event sent

+     * to client. */

+

+    events = UpdateFromMaster(events, pDev, DEVCHANGE_POINTER_EVENT, &num_events);

+

+    event = (DeviceEvent *) events->event;

+    init_event(pDev, event, GetTimeInMillis());

+    event->type = (type == ProximityIn) ? ET_ProximityIn : ET_ProximityOut;

+

+    clipValuators(pDev, &mask);

+

+    set_valuators(pDev, event, &mask);

+

+    return num_events;

+}

+

+/**

+ * Synthesize a single motion event for the core pointer.

+ *

+ * Used in cursor functions, e.g. when cursor confinement changes, and we need

+ * to shift the pointer to get it inside the new bounds.

+ */

+void

+PostSyntheticMotion(DeviceIntPtr pDev,

+                    int x,

+                    int y,

+                    int screen,

+                    unsigned long time)

+{

+    DeviceEvent ev;

+

+#ifdef PANORAMIX

+    /* Translate back to the sprite screen since processInputProc

+       will translate from sprite screen to screen 0 upon reentry

+       to the DIX layer. */

+    if (!noPanoramiXExtension) {

+        x += screenInfo.screens[0]->x - screenInfo.screens[screen]->x;

+        y += screenInfo.screens[0]->y - screenInfo.screens[screen]->y;

+    }

+#endif

+

+    memset(&ev, 0, sizeof(DeviceEvent));

+    init_event(pDev, &ev, time);

+    ev.root_x = x;

+    ev.root_y = y;

+    ev.type = ET_Motion;

+    ev.time = time;

+

+    /* FIXME: MD/SD considerations? */

+    (*pDev->public.processInputProc)((InternalEvent*)&ev, pDev);

+}

diff --git a/xorg-server/dix/ptrveloc.c b/xorg-server/dix/ptrveloc.c
index e6ac2ed14..e95d804c2 100644
--- a/xorg-server/dix/ptrveloc.c
+++ b/xorg-server/dix/ptrveloc.c
@@ -1,1197 +1,1216 @@
-/*
- *
- * Copyright © 2006-2009 Simon Thum             simon dot thum at gmx dot de
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice (including the next
- * paragraph) shall be included in all copies or substantial portions of the
- * Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
- * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
- * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
- * DEALINGS IN THE SOFTWARE.
- */
-
-#ifdef HAVE_DIX_CONFIG_H
-#include <dix-config.h>
-#endif
-
-#include <math.h>
-#include <ptrveloc.h>
-#include <exevents.h>
-#include <X11/Xatom.h>
-
-#include <xserver-properties.h>
-
-/*****************************************************************************
- * Predictable pointer acceleration
- *
- * 2006-2009 by Simon Thum (simon [dot] thum [at] gmx de)
- *
- * Serves 3 complementary functions:
- * 1) provide a sophisticated ballistic velocity estimate to improve
- *    the relation between velocity (of the device) and acceleration
- * 2) make arbitrary acceleration profiles possible
- * 3) decelerate by two means (constant and adaptive) if enabled
- *
- * Important concepts are the
- *
- * - Scheme
- *      which selects the basic algorithm
- *      (see devices.c/InitPointerAccelerationScheme)
- * - Profile
- *      which returns an acceleration
- *      for a given velocity
- *
- *  The profile can be selected by the user at runtime.
- *  The classic profile is intended to cleanly perform old-style
- *  function selection (threshold =/!= 0)
- *
- ****************************************************************************/
-
-/* fwds */
-int
-SetAccelerationProfile(DeviceVelocityPtr vel, int profile_num);
-static float
-SimpleSmoothProfile(DeviceIntPtr dev, DeviceVelocityPtr vel, float velocity,
-                    float threshold, float acc);
-static PointerAccelerationProfileFunc
-GetAccelerationProfile(DeviceVelocityPtr vel, int profile_num);
-static BOOL
-InitializePredictableAccelerationProperties(DeviceIntPtr dev);
-static BOOL
-DeletePredictableAccelerationProperties(DeviceIntPtr dev);
-
-/*#define PTRACCEL_DEBUGGING*/
-
-#ifdef PTRACCEL_DEBUGGING
-#define DebugAccelF ErrorF
-#else
-#define DebugAccelF(...) /* */
-#endif
-
-/********************************
- *  Init/Uninit
- *******************************/
-
-/* some int which is not a profile number */
-#define PROFILE_UNINITIALIZE (-100)
-
-
-/**
- * Init DeviceVelocity struct so it should match the average case
- */
-void
-InitVelocityData(DeviceVelocityPtr vel)
-{
-    memset(vel, 0, sizeof(DeviceVelocityRec));
-
-    vel->corr_mul = 10.0;      /* dots per 10 milisecond should be usable */
-    vel->const_acceleration = 1.0;   /* no acceleration/deceleration  */
-    vel->reset_time = 300;
-    vel->use_softening = 1;
-    vel->min_acceleration = 1.0; /* don't decelerate */
-    vel->max_rel_diff = 0.2;
-    vel->max_diff = 1.0;
-    vel->initial_range = 2;
-    vel->average_accel = TRUE;
-    SetAccelerationProfile(vel, AccelProfileClassic);
-    InitTrackers(vel, 16);
-}
-
-
-/**
- * Clean up DeviceVelocityRec
- */
-void
-FreeVelocityData(DeviceVelocityPtr vel){
-    free(vel->tracker);
-    SetAccelerationProfile(vel, PROFILE_UNINITIALIZE);
-}
-
-
-/**
- * Init predictable scheme
- */
-Bool
-InitPredictableAccelerationScheme(DeviceIntPtr dev,
-				  ValuatorAccelerationPtr protoScheme) {
-    DeviceVelocityPtr vel;
-    ValuatorAccelerationRec scheme;
-    scheme = *protoScheme;
-    vel = calloc(1, sizeof(DeviceVelocityRec));
-    if (!vel)
-	return FALSE;
-    InitVelocityData(vel);
-    scheme.accelData = vel;
-    dev->valuator->accelScheme = scheme;
-    InitializePredictableAccelerationProperties(dev);
-    return TRUE;
-}
-
-
-/**
- *  Uninit scheme
- */
-void
-AccelerationDefaultCleanup(DeviceIntPtr dev)
-{
-    /*sanity check*/
-    if( dev->valuator->accelScheme.AccelSchemeProc == acceleratePointerPredictable
-            && dev->valuator->accelScheme.accelData != NULL){
-        dev->valuator->accelScheme.AccelSchemeProc = NULL;
-        FreeVelocityData(dev->valuator->accelScheme.accelData);
-        free(dev->valuator->accelScheme.accelData);
-        dev->valuator->accelScheme.accelData = NULL;
-        DeletePredictableAccelerationProperties(dev);
-    }
-}
-
-
-/*************************
- * Input property support
- ************************/
-
-/**
- * choose profile
- */
-static int
-AccelSetProfileProperty(DeviceIntPtr dev, Atom atom,
-                        XIPropertyValuePtr val, BOOL checkOnly)
-{
-    DeviceVelocityPtr vel;
-    int profile, *ptr = &profile;
-    int rc;
-    int nelem = 1;
-
-    if (atom != XIGetKnownProperty(ACCEL_PROP_PROFILE_NUMBER))
-        return Success;
-
-    vel = GetDevicePredictableAccelData(dev);
-    if (!vel)
-        return BadValue;
-    rc = XIPropToInt(val, &nelem, &ptr);
-
-    if(checkOnly)
-    {
-        if (rc)
-            return rc;
-
-        if (GetAccelerationProfile(vel, profile) == NULL)
-            return BadValue;
-    } else
-	SetAccelerationProfile(vel, profile);
-
-    return Success;
-}
-
-static long
-AccelInitProfileProperty(DeviceIntPtr dev, DeviceVelocityPtr vel)
-{
-    int profile = vel->statistics.profile_number;
-    Atom prop_profile_number = XIGetKnownProperty(ACCEL_PROP_PROFILE_NUMBER);
-
-    XIChangeDeviceProperty(dev, prop_profile_number, XA_INTEGER, 32,
-                           PropModeReplace, 1, &profile, FALSE);
-    XISetDevicePropertyDeletable(dev, prop_profile_number, FALSE);
-    return XIRegisterPropertyHandler(dev, AccelSetProfileProperty, NULL, NULL);
-}
-
-/**
- * constant deceleration
- */
-static int
-AccelSetDecelProperty(DeviceIntPtr dev, Atom atom,
-                      XIPropertyValuePtr val, BOOL checkOnly)
-{
-    DeviceVelocityPtr vel;
-    float v, *ptr = &v;
-    int rc;
-    int nelem = 1;
-
-    if (atom != XIGetKnownProperty(ACCEL_PROP_CONSTANT_DECELERATION))
-        return Success;
-
-    vel = GetDevicePredictableAccelData(dev);
-    if (!vel)
-        return BadValue;
-    rc = XIPropToFloat(val, &nelem, &ptr);
-
-    if(checkOnly)
-    {
-        if (rc)
-            return rc;
-	return (v >= 1.0f) ? Success : BadValue;
-    }
-
-    if(v >= 1.0f)
-	vel->const_acceleration = 1/v;
-
-    return Success;
-}
-
-static long
-AccelInitDecelProperty(DeviceIntPtr dev, DeviceVelocityPtr vel)
-{
-    float fval = 1.0/vel->const_acceleration;
-    Atom prop_const_decel = XIGetKnownProperty(ACCEL_PROP_CONSTANT_DECELERATION);
-    XIChangeDeviceProperty(dev, prop_const_decel,
-                           XIGetKnownProperty(XATOM_FLOAT), 32,
-                           PropModeReplace, 1, &fval, FALSE);
-    XISetDevicePropertyDeletable(dev, prop_const_decel, FALSE);
-    return XIRegisterPropertyHandler(dev, AccelSetDecelProperty, NULL, NULL);
-}
-
-
-/**
- * adaptive deceleration
- */
-static int
-AccelSetAdaptDecelProperty(DeviceIntPtr dev, Atom atom,
-                           XIPropertyValuePtr val, BOOL checkOnly)
-{
-    DeviceVelocityPtr veloc;
-    float v, *ptr = &v;
-    int rc;
-    int nelem = 1;
-
-    if (atom != XIGetKnownProperty(ACCEL_PROP_ADAPTIVE_DECELERATION))
-        return Success;
-
-    veloc = GetDevicePredictableAccelData(dev);
-    if (!veloc)
-        return BadValue;
-    rc = XIPropToFloat(val, &nelem, &ptr);
-
-    if(checkOnly)
-    {
-        if (rc)
-            return rc;
-	return (v >= 1.0f) ? Success : BadValue;
-    }
-
-    if(v >= 1.0f)
-	veloc->min_acceleration = 1/v;
-
-    return Success;
-}
-
-static long
-AccelInitAdaptDecelProperty(DeviceIntPtr dev, DeviceVelocityPtr vel)
-{
-    float fval = 1.0/vel->min_acceleration;
-    Atom prop_adapt_decel = XIGetKnownProperty(ACCEL_PROP_ADAPTIVE_DECELERATION);
-
-    XIChangeDeviceProperty(dev, prop_adapt_decel, XIGetKnownProperty(XATOM_FLOAT), 32,
-                           PropModeReplace, 1, &fval, FALSE);
-    XISetDevicePropertyDeletable(dev, prop_adapt_decel, FALSE);
-    return XIRegisterPropertyHandler(dev, AccelSetAdaptDecelProperty, NULL, NULL);
-}
-
-
-/**
- * velocity scaling
- */
-static int
-AccelSetScaleProperty(DeviceIntPtr dev, Atom atom,
-                      XIPropertyValuePtr val, BOOL checkOnly)
-{
-    DeviceVelocityPtr vel;
-    float v, *ptr = &v;
-    int rc;
-    int nelem = 1;
-
-    if (atom != XIGetKnownProperty(ACCEL_PROP_VELOCITY_SCALING))
-        return Success;
-
-    vel = GetDevicePredictableAccelData(dev);
-    if (!vel)
-        return BadValue;
-    rc = XIPropToFloat(val, &nelem, &ptr);
-
-    if (checkOnly)
-    {
-        if (rc)
-            return rc;
-
-        return (v > 0) ? Success : BadValue;
-    }
-
-    if(v > 0)
-	vel->corr_mul = v;
-
-    return Success;
-}
-
-static long
-AccelInitScaleProperty(DeviceIntPtr dev, DeviceVelocityPtr vel)
-{
-    float fval = vel->corr_mul;
-    Atom prop_velo_scale = XIGetKnownProperty(ACCEL_PROP_VELOCITY_SCALING);
-
-    XIChangeDeviceProperty(dev, prop_velo_scale, XIGetKnownProperty(XATOM_FLOAT), 32,
-                           PropModeReplace, 1, &fval, FALSE);
-    XISetDevicePropertyDeletable(dev, prop_velo_scale, FALSE);
-    return XIRegisterPropertyHandler(dev, AccelSetScaleProperty, NULL, NULL);
-}
-
-BOOL
-InitializePredictableAccelerationProperties(DeviceIntPtr dev)
-{
-    DeviceVelocityPtr  vel = GetDevicePredictableAccelData(dev);
-
-    if(!vel)
-	return FALSE;
-
-    vel->prop_handlers[0] = AccelInitProfileProperty(dev, vel);
-    vel->prop_handlers[1] = AccelInitDecelProperty(dev, vel);
-    vel->prop_handlers[2] = AccelInitAdaptDecelProperty(dev, vel);
-    vel->prop_handlers[3] = AccelInitScaleProperty(dev, vel);
-
-    return TRUE;
-}
-
-BOOL
-DeletePredictableAccelerationProperties(DeviceIntPtr dev)
-{
-    DeviceVelocityPtr  vel;
-    Atom prop;
-    int i;
-
-    prop = XIGetKnownProperty(ACCEL_PROP_VELOCITY_SCALING);
-    XIDeleteDeviceProperty(dev, prop, FALSE);
-    prop = XIGetKnownProperty(ACCEL_PROP_ADAPTIVE_DECELERATION);
-    XIDeleteDeviceProperty(dev, prop, FALSE);
-    prop = XIGetKnownProperty(ACCEL_PROP_CONSTANT_DECELERATION);
-    XIDeleteDeviceProperty(dev, prop, FALSE);
-    prop = XIGetKnownProperty(ACCEL_PROP_PROFILE_NUMBER);
-    XIDeleteDeviceProperty(dev, prop, FALSE);
-
-    vel = GetDevicePredictableAccelData(dev);
-    for (i = 0; vel && i < NPROPS_PREDICTABLE_ACCEL; i++)
-	if (vel->prop_handlers[i])
-	    XIUnregisterPropertyHandler(dev, vel->prop_handlers[i]);
-
-    return TRUE;
-}
-
-/*********************
- * Tracking logic
- ********************/
-
-void
-InitTrackers(DeviceVelocityPtr vel, int ntracker)
-{
-    if(ntracker < 1){
-	ErrorF("(dix ptracc) invalid number of trackers\n");
-	return;
-    }
-    free(vel->tracker);
-    vel->tracker = (MotionTrackerPtr)malloc(ntracker * sizeof(MotionTracker));
-    memset(vel->tracker, 0, ntracker * sizeof(MotionTracker));
-    vel->num_tracker = ntracker;
-}
-
-/**
- * return a bit field of possible directions.
- * 0 = N, 2 = E, 4 = S, 6 = W, in-between is as you guess.
- * There's no reason against widening to more precise directions (<45 degrees),
- * should it not perform well. All this is needed for is sort out non-linear
- * motion, so precision isn't paramount. However, one should not flag direction
- * too narrow, since it would then cut the linear segment to zero size way too
- * often.
- */
-static int
-DoGetDirection(int dx, int dy){
-    float r;
-    int i1, i2;
-    /* on insignificant mickeys, flag 135 degrees */
-    if(abs(dx) < 2 && abs(dy < 2)){
-	/* first check diagonal cases */
-	if(dx > 0 && dy > 0)
-	    return 4+8+16;
-	if(dx > 0 && dy < 0)
-	    return 1+2+4;
-	if(dx < 0 && dy < 0)
-	    return 1+128+64;
-	if(dx < 0 && dy > 0)
-	    return 16+32+64;
-        /* check axis-aligned directions */
-	if(dx > 0)
-            return 2+4+8; /*E*/
-        if(dx < 0)
-            return 128+64+32; /*W*/
-        if(dy > 0)
-            return 32+16+8; /*S*/
-        if(dy < 0)
-            return 128+1+2; /*N*/
-        return 255; /* shouldn't happen */
-    }
-    /* else, compute angle and set appropriate flags */
-#ifdef _ISOC99_SOURCE
-    r = atan2f(dy, dx);
-#else
-    r = atan2(dy, dx);
-#endif
-    /* find direction. We avoid r to become negative,
-     * since C has no well-defined modulo for such cases. */
-    r = (r+(M_PI*2.5))/(M_PI/4);
-    /* this intends to flag 2 directions (90 degrees),
-     * except on very well-aligned mickeys. */
-    i1 = (int)(r+0.1) % 8;
-    i2 = (int)(r+0.9) % 8;
-    if(i1 < 0 || i1 > 7 || i2 < 0 || i2 > 7)
-	return 255; /* shouldn't happen */
-    return 1 << i1 | 1 << i2;
-}
-
-#define DIRECTION_CACHE_RANGE 5
-#define DIRECTION_CACHE_SIZE (DIRECTION_CACHE_RANGE*2+1)
-
-/* cache DoGetDirection(). */
-static int
-GetDirection(int dx, int dy){
-    static int cache[DIRECTION_CACHE_SIZE][DIRECTION_CACHE_SIZE];
-    int i;
-    if (abs(dx) <= DIRECTION_CACHE_RANGE &&
-	abs(dy) <= DIRECTION_CACHE_RANGE) {
-	/* cacheable */
-	i = cache[DIRECTION_CACHE_RANGE+dx][DIRECTION_CACHE_RANGE+dy];
-	if(i != 0){
-	    return i;
-	}else{
-	    i = DoGetDirection(dx, dy);
-	    cache[DIRECTION_CACHE_RANGE+dx][DIRECTION_CACHE_RANGE+dy] = i;
-	    return i;
-	}
-    }else{
-	/* non-cacheable */
-	return DoGetDirection(dx, dy);
-    }
-}
-
-#undef DIRECTION_CACHE_RANGE
-#undef DIRECTION_CACHE_SIZE
-
-
-/* convert offset (age) to array index */
-#define TRACKER_INDEX(s, d) (((s)->num_tracker + (s)->cur_tracker - (d)) % (s)->num_tracker)
-
-static inline void
-FeedTrackers(DeviceVelocityPtr vel, int dx, int dy, int cur_t)
-{
-    int n;
-    for(n = 0; n < vel->num_tracker; n++){
-	vel->tracker[n].dx += dx;
-	vel->tracker[n].dy += dy;
-    }
-    n = (vel->cur_tracker + 1) % vel->num_tracker;
-    vel->tracker[n].dx = 0;
-    vel->tracker[n].dy = 0;
-    vel->tracker[n].time = cur_t;
-    vel->tracker[n].dir = GetDirection(dx, dy);
-    DebugAccelF("(dix prtacc) motion [dx: %i dy: %i dir:%i diff: %i]\n",
-                dx, dy, vel->tracker[n].dir,
-                cur_t - vel->tracker[vel->cur_tracker].time);
-    vel->cur_tracker = n;
-}
-
-/**
- * calc velocity for given tracker, with
- * velocity scaling.
- * This assumes linear motion.
- */
-static float
-CalcTracker(DeviceVelocityPtr vel, int offset, int cur_t){
-    int index = TRACKER_INDEX(vel, offset);
-    float dist = sqrt(  vel->tracker[index].dx * vel->tracker[index].dx
-                      + vel->tracker[index].dy * vel->tracker[index].dy);
-    int dtime = cur_t - vel->tracker[index].time;
-    if(dtime > 0)
-	return dist / dtime;
-    else
-	return 0;/* synonymous for NaN, since we're not C99 */
-}
-
-/* find the most plausible velocity. That is, the most distant
- * (in time) tracker which isn't too old, beyond a linear partition,
- * or simply too much off initial velocity.
- *
- * May return 0.
- */
-static float
-QueryTrackers(DeviceVelocityPtr vel, int cur_t){
-    int n, offset, dir = 255, i = -1, age_ms;
-    /* initial velocity: a low-offset, valid velocity */
-    float iveloc = 0, res = 0, tmp, vdiff;
-    float vfac =  vel->corr_mul * vel->const_acceleration; /* premultiply */
-    /* loop from current to older data */
-    for(offset = 1; offset < vel->num_tracker; offset++){
-	n = TRACKER_INDEX(vel, offset);
-
-	age_ms = cur_t - vel->tracker[n].time;
-
-	/* bail out if data is too old and protect from overrun */
-	if (age_ms >= vel->reset_time || age_ms < 0) {
-	    DebugAccelF("(dix prtacc) query: tracker too old\n");
-	    break;
-	}
-
-	/*
-	 * this heuristic avoids using the linear-motion velocity formula
-	 * in CalcTracker() on motion that isn't exactly linear. So to get
-	 * even more precision we could subdivide as a final step, so possible
-	 * non-linearities are accounted for.
-	 */
-	dir &= vel->tracker[n].dir;
-	if(dir == 0){
-	    DebugAccelF("(dix prtacc) query: no longer linear\n");
-	    /* instead of breaking it we might also inspect the partition after,
-	     * but actual improvement with this is probably rare. */
-	    break;
-	}
-
-	tmp = CalcTracker(vel, offset, cur_t) * vfac;
-
-	if ((iveloc == 0 || offset <= vel->initial_range) && tmp != 0) {
-	    /* set initial velocity and result */
-	    res = iveloc = tmp;
-	    i = offset;
-	} else if (iveloc != 0 && tmp != 0) {
-	    vdiff = fabs(iveloc - tmp);
-	    if (vdiff <= vel->max_diff ||
-		vdiff/(iveloc + tmp) < vel->max_rel_diff) {
-		/* we're in range with the initial velocity,
-		 * so this result is likely better
-		 * (it contains more information). */
-		res = tmp;
-		i = offset;
-	    }else{
-		/* we're not in range, quit - it won't get better. */
-		DebugAccelF("(dix prtacc) query: tracker too different:"
-		            " old %2.2f initial %2.2f diff: %2.2f\n",
-		            tmp, iveloc, vdiff);
-		break;
-	    }
-	}
-    }
-    if(offset == vel->num_tracker){
-	DebugAccelF("(dix prtacc) query: last tracker in effect\n");
-	i = vel->num_tracker-1;
-    }
-    if(i>=0){
-        n = TRACKER_INDEX(vel, i);
-	DebugAccelF("(dix prtacc) result: offset %i [dx: %i dy: %i diff: %i]\n",
-	            i,
-	            vel->tracker[n].dx,
-	            vel->tracker[n].dy,
-	            cur_t - vel->tracker[n].time);
-    }
-    return res;
-}
-
-#undef TRACKER_INDEX
-
-/**
- * Perform velocity approximation based on 2D 'mickeys' (mouse motion delta).
- * return true if non-visible state reset is suggested
- */
-short
-ProcessVelocityData2D(
-    DeviceVelocityPtr vel,
-    int dx,
-    int dy,
-    int time)
-{
-    float velocity;
-
-    vel->last_velocity = vel->velocity;
-
-    FeedTrackers(vel, dx, dy, time);
-
-    velocity = QueryTrackers(vel, time);
-
-    vel->velocity = velocity;
-    return velocity == 0;
-}
-
-/**
- * this flattens significant ( > 1) mickeys a little bit for more steady
- * constant-velocity response
- */
-static inline float
-ApplySimpleSoftening(int od, int d)
-{
-    float res = d;
-    if (d <= 1 && d >= -1)
-        return res;
-    if (d > od)
-        res -= 0.5;
-    else if (d < od)
-        res += 0.5;
-    return res;
-}
-
-
-static void
-ApplySofteningAndConstantDeceleration(
-        DeviceVelocityPtr vel,
-        int dx,
-        int dy,
-        float* fdx,
-        float* fdy,
-        short do_soften)
-{
-    if (do_soften && vel->use_softening) {
-        *fdx = ApplySimpleSoftening(vel->last_dx, dx);
-        *fdy = ApplySimpleSoftening(vel->last_dy, dy);
-    } else {
-        *fdx = dx;
-        *fdy = dy;
-    }
-
-    *fdx *= vel->const_acceleration;
-    *fdy *= vel->const_acceleration;
-}
-
-/*
- * compute the acceleration for given velocity and enforce min_acceleartion
- */
-float
-BasicComputeAcceleration(
-    DeviceIntPtr dev,
-    DeviceVelocityPtr vel,
-    float velocity,
-    float threshold,
-    float acc){
-
-    float result;
-    result = vel->Profile(dev, vel, velocity, threshold, acc);
-
-    /* enforce min_acceleration */
-    if (result < vel->min_acceleration)
-	result = vel->min_acceleration;
-    return result;
-}
-
-/**
- * Compute acceleration. Takes into account averaging, nv-reset, etc.
- */
-static float
-ComputeAcceleration(
-    DeviceIntPtr dev,
-    DeviceVelocityPtr vel,
-    float threshold,
-    float acc){
-    float res;
-
-    if(vel->velocity <= 0){
-	DebugAccelF("(dix ptracc) profile skipped\n");
-        /*
-         * If we have no idea about device velocity, don't pretend it.
-         */
-	return 1;
-    }
-
-    if(vel->average_accel && vel->velocity != vel->last_velocity){
-	/* use simpson's rule to average acceleration between
-	 * current and previous velocity.
-	 * Though being the more natural choice, it causes a minor delay
-	 * in comparison, so it can be disabled. */
-	res = BasicComputeAcceleration(
-	          dev, vel, vel->velocity, threshold, acc);
-	res += BasicComputeAcceleration(
-	          dev, vel, vel->last_velocity, threshold, acc);
-	res += 4.0f * BasicComputeAcceleration(dev, vel,
-	                   (vel->last_velocity + vel->velocity) / 2,
-	                   threshold, acc);
-	res /= 6.0f;
-	DebugAccelF("(dix ptracc) profile average [%.2f ... %.2f] is %.3f\n",
-	            vel->velocity, vel->last_velocity, res);
-        return res;
-    }else{
-	res = BasicComputeAcceleration(dev, vel,
-	                               vel->velocity, threshold, acc);
-	DebugAccelF("(dix ptracc) profile sample [%.2f] is %.3f\n",
-               vel->velocity, res);
-	return res;
-    }
-}
-
-
-/*****************************************
- *  Acceleration functions and profiles
- ****************************************/
-
-/**
- * Polynomial function similar previous one, but with f(1) = 1
- */
-static float
-PolynomialAccelerationProfile(
-    DeviceIntPtr dev,
-    DeviceVelocityPtr vel,
-    float velocity,
-    float ignored,
-    float acc)
-{
-   return pow(velocity, (acc - 1.0) * 0.5);
-}
-
-
-/**
- * returns acceleration for velocity.
- * This profile selects the two functions like the old scheme did
- */
-static float
-ClassicProfile(
-    DeviceIntPtr dev,
-    DeviceVelocityPtr vel,
-    float velocity,
-    float threshold,
-    float acc)
-{
-    if (threshold > 0) {
-	return SimpleSmoothProfile (dev,
-	                            vel,
-	                            velocity,
-                                    threshold,
-                                    acc);
-    } else {
-	return PolynomialAccelerationProfile (dev,
-	                                      vel,
-	                                      velocity,
-                                              0,
-                                              acc);
-    }
-}
-
-
-/**
- * Power profile
- * This has a completely smooth transition curve, i.e. no jumps in the
- * derivatives.
- *
- * This has the expense of overall response dependency on min-acceleration.
- * In effect, min_acceleration mimics const_acceleration in this profile.
- */
-static float
-PowerProfile(
-    DeviceIntPtr dev,
-    DeviceVelocityPtr vel,
-    float velocity,
-    float threshold,
-    float acc)
-{
-    float vel_dist;
-
-    acc = (acc-1.0) * 0.1f + 1.0; /* without this, acc of 2 is unuseable */
-
-    if (velocity <= threshold)
-        return vel->min_acceleration;
-    vel_dist = velocity - threshold;
-    return (pow(acc, vel_dist)) * vel->min_acceleration;
-}
-
-
-/**
- * just a smooth function in [0..1] -> [0..1]
- *  - point symmetry at 0.5
- *  - f'(0) = f'(1) = 0
- *  - starts faster than a sinoid
- *  - smoothness C1 (Cinf if you dare to ignore endpoints)
- */
-static inline float
-CalcPenumbralGradient(float x){
-    x *= 2.0f;
-    x -= 1.0f;
-    return 0.5f + (x * sqrt(1.0f - x*x) + asin(x))/M_PI;
-}
-
-
-/**
- * acceleration function similar to classic accelerated/unaccelerated,
- * but with smooth transition in between (and towards zero for adaptive dec.).
- */
-static float
-SimpleSmoothProfile(
-    DeviceIntPtr dev,
-    DeviceVelocityPtr vel,
-    float velocity,
-    float threshold,
-    float acc)
-{
-    if(velocity < 1.0f)
-        return CalcPenumbralGradient(0.5 + velocity*0.5) * 2.0f - 1.0f;
-    if(threshold < 1.0f)
-        threshold = 1.0f;
-    if (velocity <= threshold)
-        return 1;
-    velocity /= threshold;
-    if (velocity >= acc)
-        return acc;
-    else
-        return 1.0f + (CalcPenumbralGradient(velocity/acc) * (acc - 1.0f));
-}
-
-
-/**
- * This profile uses the first half of the penumbral gradient as a start
- * and then scales linearly.
- */
-static float
-SmoothLinearProfile(
-    DeviceIntPtr dev,
-    DeviceVelocityPtr vel,
-    float velocity,
-    float threshold,
-    float acc)
-{
-    float res, nv;
-
-    if(acc > 1.0f)
-        acc -= 1.0f; /*this is so acc = 1 is no acceleration */
-    else
-        return 1.0f;
-
-    nv = (velocity - threshold) * acc * 0.5f;
-
-    if(nv < 0){
-        res = 0;
-    }else if(nv < 2){
-        res = CalcPenumbralGradient(nv*0.25f)*2.0f;
-    }else{
-        nv -= 2.0f;
-        res = nv * 2.0f / M_PI  /* steepness of gradient at 0.5 */
-              + 1.0f; /* gradient crosses 2|1 */
-    }
-    res += vel->min_acceleration;
-    return res;
-}
-
-
-/**
- * From 0 to threshold, the response graduates smoothly from min_accel to
- * acceleration. Beyond threshold it is exactly the specified acceleration.
- */
-static float
-SmoothLimitedProfile(
-    DeviceIntPtr dev,
-    DeviceVelocityPtr vel,
-    float velocity,
-    float threshold,
-    float acc)
-{
-    float res;
-
-    if(velocity >= threshold || threshold == 0.0f)
-	return acc;
-
-    velocity /= threshold; /* should be [0..1[ now */
-
-    res = CalcPenumbralGradient(velocity) * (acc - vel->min_acceleration);
-
-    return vel->min_acceleration + res;
-}
-
-
-static float
-LinearProfile(
-    DeviceIntPtr dev,
-    DeviceVelocityPtr vel,
-    float velocity,
-    float threshold,
-    float acc)
-{
-    return acc * velocity;
-}
-
-static float
-NoProfile(
-    DeviceIntPtr dev,
-    DeviceVelocityPtr vel,
-    float velocity,
-    float threshold,
-    float acc)
-{
-    return 1.0f;
-}
-
-static PointerAccelerationProfileFunc
-GetAccelerationProfile(
-    DeviceVelocityPtr vel,
-    int profile_num)
-{
-    switch(profile_num){
-        case AccelProfileClassic:
-            return ClassicProfile;
-        case AccelProfileDeviceSpecific:
-            return vel->deviceSpecificProfile;
-        case AccelProfilePolynomial:
-            return PolynomialAccelerationProfile;
-        case AccelProfileSmoothLinear:
-            return SmoothLinearProfile;
-        case AccelProfileSimple:
-            return SimpleSmoothProfile;
-        case AccelProfilePower:
-            return PowerProfile;
-        case AccelProfileLinear:
-            return LinearProfile;
-        case AccelProfileSmoothLimited:
-            return SmoothLimitedProfile;
-        case AccelProfileNone:
-            return NoProfile;
-        default:
-            return NULL;
-    }
-}
-
-/**
- * Set the profile by number.
- * Intended to make profiles exchangeable at runtime.
- * If you created a profile, give it a number here and in the header to
- * make it selectable. In case some profile-specific init is needed, here
- * would be a good place, since FreeVelocityData() also calls this with
- * PROFILE_UNINITIALIZE.
- *
- * returns FALSE if profile number is unavailable, TRUE otherwise.
- */
-int
-SetAccelerationProfile(
-    DeviceVelocityPtr vel,
-    int profile_num)
-{
-    PointerAccelerationProfileFunc profile;
-    profile = GetAccelerationProfile(vel, profile_num);
-
-    if(profile == NULL && profile_num != PROFILE_UNINITIALIZE)
-	return FALSE;
-
-    /* Here one could free old profile-private data */
-    free(vel->profile_private);
-    vel->profile_private = NULL;
-    /* Here one could init profile-private data */
-    vel->Profile = profile;
-    vel->statistics.profile_number = profile_num;
-    return TRUE;
-}
-
-/**********************************************
- * driver interaction
- **********************************************/
-
-
-/**
- * device-specific profile
- *
- * The device-specific profile is intended as a hook for a driver
- * which may want to provide an own acceleration profile.
- * It should not rely on profile-private data, instead
- * it should do init/uninit in the driver (ie. with DEVICE_INIT and friends).
- * Users may override or choose it.
- */
-void
-SetDeviceSpecificAccelerationProfile(
-        DeviceVelocityPtr vel,
-        PointerAccelerationProfileFunc profile)
-{
-    if(vel)
-	vel->deviceSpecificProfile = profile;
-}
-
-/**
- * Use this function to obtain a DeviceVelocityPtr for a device. Will return NULL if
- * the predictable acceleration scheme is not in effect.
- */
-DeviceVelocityPtr
-GetDevicePredictableAccelData(
-	DeviceIntPtr dev)
-{
-    /*sanity check*/
-    if(!dev){
-	ErrorF("[dix] accel: DeviceIntPtr was NULL");
-	return NULL;
-    }
-    if( dev->valuator &&
-	dev->valuator->accelScheme.AccelSchemeProc ==
-	    acceleratePointerPredictable &&
-	dev->valuator->accelScheme.accelData != NULL){
-
-	return (DeviceVelocityPtr)dev->valuator->accelScheme.accelData;
-    }
-    return NULL;
-}
-
-/********************************
- *  acceleration schemes
- *******************************/
-
-/**
- * Modifies valuators in-place.
- * This version employs a velocity approximation algorithm to
- * enable fine-grained predictable acceleration profiles.
- */
-void
-acceleratePointerPredictable(
-    DeviceIntPtr dev,
-    int first_valuator,
-    int num_valuators,
-    int *valuators,
-    int evtime)
-{
-    float fdx, fdy, tmp, mult; /* no need to init */
-    int dx = 0, dy = 0;
-    int *px = NULL, *py = NULL;
-    DeviceVelocityPtr velocitydata = GetDevicePredictableAccelData(dev);
-    Bool soften = TRUE;
-
-    if (!num_valuators || !valuators || !velocitydata)
-        return;
-
-    if (velocitydata->statistics.profile_number == AccelProfileNone &&
-	velocitydata->const_acceleration == 1.0f) {
-	return; /*we're inactive anyway, so skip the whole thing.*/
-    }
-
-    if (first_valuator == 0) {
-        dx = valuators[0];
-        px = &valuators[0];
-    }
-    if (first_valuator <= 1 && num_valuators >= (2 - first_valuator)) {
-        dy = valuators[1 - first_valuator];
-        py = &valuators[1 - first_valuator];
-    }
-
-    if (dx || dy){
-        /* reset non-visible state? */
-        if (ProcessVelocityData2D(velocitydata, dx , dy, evtime)) {
-            soften = FALSE;
-        }
-
-        if (dev->ptrfeed && dev->ptrfeed->ctrl.num) {
-            /* invoke acceleration profile to determine acceleration */
-            mult = ComputeAcceleration (dev, velocitydata,
-					dev->ptrfeed->ctrl.threshold,
-					(float)dev->ptrfeed->ctrl.num /
-					(float)dev->ptrfeed->ctrl.den);
-
-            if(mult != 1.0f || velocitydata->const_acceleration != 1.0f) {
-                ApplySofteningAndConstantDeceleration( velocitydata,
-						       dx, dy,
-						       &fdx, &fdy,
-						       (mult > 1.0f) && soften);
-
-                if (dx) {
-                    tmp = mult * fdx + dev->last.remainder[0];
-                    /* Since it may not be apparent: lrintf() does not offer
-                     * strong statements about rounding; however because we
-                     * process each axis conditionally, there's no danger
-                     * of a toggling remainder. Its lack of guarantees likely
-                     * makes it faster on the average target. */
-                    *px = lrintf(tmp);
-                    dev->last.remainder[0] = tmp - (float)*px;
-                }
-                if (dy) {
-                    tmp = mult * fdy + dev->last.remainder[1];
-                    *py = lrintf(tmp);
-                    dev->last.remainder[1] = tmp - (float)*py;
-                }
-                DebugAccelF("pos (%i | %i) remainders x: %.3f y: %.3f delta x:%.3f y:%.3f\n",
-                            *px, *py, dev->last.remainder[0], dev->last.remainder[1], fdx, fdy);
-            }
-        }
-    }
-    /* remember last motion delta (for softening/slow movement treatment) */
-    velocitydata->last_dx = dx;
-    velocitydata->last_dy = dy;
-}
-
-
-
-/**
- * Originally a part of xf86PostMotionEvent; modifies valuators
- * in-place. Retained mostly for embedded scenarios.
- */
-void
-acceleratePointerLightweight(
-    DeviceIntPtr dev,
-    int first_valuator,
-    int num_valuators,
-    int *valuators,
-    int ignored)
-{
-    float mult = 0.0;
-    int dx = 0, dy = 0;
-    int *px = NULL, *py = NULL;
-
-    if (!num_valuators || !valuators)
-        return;
-
-    if (first_valuator == 0) {
-        dx = valuators[0];
-        px = &valuators[0];
-    }
-    if (first_valuator <= 1 && num_valuators >= (2 - first_valuator)) {
-        dy = valuators[1 - first_valuator];
-        py = &valuators[1 - first_valuator];
-    }
-
-    if (!dx && !dy)
-        return;
-
-    if (dev->ptrfeed && dev->ptrfeed->ctrl.num) {
-        /* modeled from xf86Events.c */
-        if (dev->ptrfeed->ctrl.threshold) {
-            if ((abs(dx) + abs(dy)) >= dev->ptrfeed->ctrl.threshold) {
-                dev->last.remainder[0] = ((float)dx *
-                                             (float)(dev->ptrfeed->ctrl.num)) /
-                                             (float)(dev->ptrfeed->ctrl.den) +
-                                            dev->last.remainder[0];
-                if (px) {
-                    *px = (int)dev->last.remainder[0];
-                    dev->last.remainder[0] = dev->last.remainder[0] -
-                                                (float)(*px);
-                }
-
-                dev->last.remainder[1] = ((float)dy *
-                                             (float)(dev->ptrfeed->ctrl.num)) /
-                                             (float)(dev->ptrfeed->ctrl.den) +
-                                            dev->last.remainder[1];
-                if (py) {
-                    *py = (int)dev->last.remainder[1];
-                    dev->last.remainder[1] = dev->last.remainder[1] -
-                                                (float)(*py);
-                }
-            }
-        }
-        else {
-	    mult = pow((float)dx * (float)dx + (float)dy * (float)dy,
-                       ((float)(dev->ptrfeed->ctrl.num) /
-                        (float)(dev->ptrfeed->ctrl.den) - 1.0) /
-                       2.0) / 2.0;
-            if (dx) {
-                dev->last.remainder[0] = mult * (float)dx +
-                                            dev->last.remainder[0];
-                *px = (int)dev->last.remainder[0];
-                dev->last.remainder[0] = dev->last.remainder[0] -
-                                            (float)(*px);
-            }
-            if (dy) {
-                dev->last.remainder[1] = mult * (float)dy +
-                                            dev->last.remainder[1];
-                *py = (int)dev->last.remainder[1];
-                dev->last.remainder[1] = dev->last.remainder[1] -
-                                            (float)(*py);
-            }
-        }
-    }
-}
+/*

+ *

+ * Copyright © 2006-2009 Simon Thum             simon dot thum at gmx dot de

+ *

+ * Permission is hereby granted, free of charge, to any person obtaining a

+ * copy of this software and associated documentation files (the "Software"),

+ * to deal in the Software without restriction, including without limitation

+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,

+ * and/or sell copies of the Software, and to permit persons to whom the

+ * Software is furnished to do so, subject to the following conditions:

+ *

+ * The above copyright notice and this permission notice (including the next

+ * paragraph) shall be included in all copies or substantial portions of the

+ * Software.

+ *

+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL

+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING

+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER

+ * DEALINGS IN THE SOFTWARE.

+ */

+

+#ifdef HAVE_DIX_CONFIG_H

+#include <dix-config.h>

+#endif

+

+#include <math.h>

+#include <ptrveloc.h>

+#include <exevents.h>

+#include <X11/Xatom.h>

+#include <os.h>

+

+#include <xserver-properties.h>

+

+/*****************************************************************************

+ * Predictable pointer acceleration

+ *

+ * 2006-2009 by Simon Thum (simon [dot] thum [at] gmx de)

+ *

+ * Serves 3 complementary functions:

+ * 1) provide a sophisticated ballistic velocity estimate to improve

+ *    the relation between velocity (of the device) and acceleration

+ * 2) make arbitrary acceleration profiles possible

+ * 3) decelerate by two means (constant and adaptive) if enabled

+ *

+ * Important concepts are the

+ *

+ * - Scheme

+ *      which selects the basic algorithm

+ *      (see devices.c/InitPointerAccelerationScheme)

+ * - Profile

+ *      which returns an acceleration

+ *      for a given velocity

+ *

+ *  The profile can be selected by the user at runtime.

+ *  The classic profile is intended to cleanly perform old-style

+ *  function selection (threshold =/!= 0)

+ *

+ ****************************************************************************/

+

+/* fwds */

+int

+SetAccelerationProfile(DeviceVelocityPtr vel, int profile_num);

+static float

+SimpleSmoothProfile(DeviceIntPtr dev, DeviceVelocityPtr vel, float velocity,

+                    float threshold, float acc);

+static PointerAccelerationProfileFunc

+GetAccelerationProfile(DeviceVelocityPtr vel, int profile_num);

+static BOOL

+InitializePredictableAccelerationProperties(DeviceIntPtr,

+                                            DeviceVelocityPtr,

+                                            PredictableAccelSchemePtr);

+static BOOL

+DeletePredictableAccelerationProperties(DeviceIntPtr,

+                                        PredictableAccelSchemePtr);

+

+/*#define PTRACCEL_DEBUGGING*/

+

+#ifdef PTRACCEL_DEBUGGING

+#define DebugAccelF ErrorF

+#else

+#define DebugAccelF(...) /* */

+#endif

+

+/********************************

+ *  Init/Uninit

+ *******************************/

+

+/* some int which is not a profile number */

+#define PROFILE_UNINITIALIZE (-100)

+

+/**

+ * Init DeviceVelocity struct so it should match the average case

+ */

+void

+InitVelocityData(DeviceVelocityPtr vel)

+{

+    memset(vel, 0, sizeof(DeviceVelocityRec));

+

+    vel->corr_mul = 10.0;      /* dots per 10 milisecond should be usable */

+    vel->const_acceleration = 1.0;   /* no acceleration/deceleration  */

+    vel->reset_time = 300;

+    vel->use_softening = 1;

+    vel->min_acceleration = 1.0; /* don't decelerate */

+    vel->max_rel_diff = 0.2;

+    vel->max_diff = 1.0;

+    vel->initial_range = 2;

+    vel->average_accel = TRUE;

+    SetAccelerationProfile(vel, AccelProfileClassic);

+    InitTrackers(vel, 16);

+}

+

+

+/**

+ * Clean up DeviceVelocityRec

+ */

+void

+FreeVelocityData(DeviceVelocityPtr vel){

+    free(vel->tracker);

+    SetAccelerationProfile(vel, PROFILE_UNINITIALIZE);

+}

+

+

+/**

+ * Init predictable scheme

+ */

+Bool

+InitPredictableAccelerationScheme(DeviceIntPtr dev,

+                                  ValuatorAccelerationPtr protoScheme) {

+    DeviceVelocityPtr vel;

+    ValuatorAccelerationRec scheme;

+    PredictableAccelSchemePtr schemeData;

+    scheme = *protoScheme;

+    vel = calloc(1, sizeof(DeviceVelocityRec));

+    schemeData = calloc(1, sizeof(PredictableAccelSchemeRec));

+    if (!vel || !schemeData)

+        return FALSE;

+    InitVelocityData(vel);

+    schemeData->vel = vel;

+    scheme.accelData = schemeData;

+    if (!InitializePredictableAccelerationProperties(dev, vel, schemeData))

+        return FALSE;

+    /* all fine, assign scheme to device */

+    dev->valuator->accelScheme = scheme;

+    return TRUE;

+}

+

+

+/**

+ *  Uninit scheme

+ */

+void

+AccelerationDefaultCleanup(DeviceIntPtr dev)

+{

+    DeviceVelocityPtr vel = GetDevicePredictableAccelData(dev);

+    if (vel) {

+        /* the proper guarantee would be that we're not inside of

+         * AccelSchemeProc(), but that seems impossible. Schemes don't get

+         * switched often anyway.

+         */

+        OsBlockSignals();

+        dev->valuator->accelScheme.AccelSchemeProc = NULL;

+        FreeVelocityData(vel);

+        free(vel);

+        DeletePredictableAccelerationProperties(dev,

+            (PredictableAccelSchemePtr) dev->valuator->accelScheme.accelData);

+        free(dev->valuator->accelScheme.accelData);

+        dev->valuator->accelScheme.accelData = NULL;

+        OsReleaseSignals();

+    }

+}

+

+

+/*************************

+ * Input property support

+ ************************/

+

+/**

+ * choose profile

+ */

+static int

+AccelSetProfileProperty(DeviceIntPtr dev, Atom atom,

+                        XIPropertyValuePtr val, BOOL checkOnly)

+{

+    DeviceVelocityPtr vel;

+    int profile, *ptr = &profile;

+    int rc;

+    int nelem = 1;

+

+    if (atom != XIGetKnownProperty(ACCEL_PROP_PROFILE_NUMBER))

+        return Success;

+

+    vel = GetDevicePredictableAccelData(dev);

+    if (!vel)

+        return BadValue;

+    rc = XIPropToInt(val, &nelem, &ptr);

+

+    if(checkOnly)

+    {

+        if (rc)

+            return rc;

+

+        if (GetAccelerationProfile(vel, profile) == NULL)

+            return BadValue;

+    } else

+	SetAccelerationProfile(vel, profile);

+

+    return Success;

+}

+

+static long

+AccelInitProfileProperty(DeviceIntPtr dev, DeviceVelocityPtr vel)

+{

+    int profile = vel->statistics.profile_number;

+    Atom prop_profile_number = XIGetKnownProperty(ACCEL_PROP_PROFILE_NUMBER);

+

+    XIChangeDeviceProperty(dev, prop_profile_number, XA_INTEGER, 32,

+                           PropModeReplace, 1, &profile, FALSE);

+    XISetDevicePropertyDeletable(dev, prop_profile_number, FALSE);

+    return XIRegisterPropertyHandler(dev, AccelSetProfileProperty, NULL, NULL);

+}

+

+/**

+ * constant deceleration

+ */

+static int

+AccelSetDecelProperty(DeviceIntPtr dev, Atom atom,

+                      XIPropertyValuePtr val, BOOL checkOnly)

+{

+    DeviceVelocityPtr vel;

+    float v, *ptr = &v;

+    int rc;

+    int nelem = 1;

+

+    if (atom != XIGetKnownProperty(ACCEL_PROP_CONSTANT_DECELERATION))

+        return Success;

+

+    vel = GetDevicePredictableAccelData(dev);

+    if (!vel)

+        return BadValue;

+    rc = XIPropToFloat(val, &nelem, &ptr);

+

+    if(checkOnly)

+    {

+        if (rc)

+            return rc;

+	return (v >= 1.0f) ? Success : BadValue;

+    }

+

+    if(v >= 1.0f)

+	vel->const_acceleration = 1/v;

+

+    return Success;

+}

+

+static long

+AccelInitDecelProperty(DeviceIntPtr dev, DeviceVelocityPtr vel)

+{

+    float fval = 1.0/vel->const_acceleration;

+    Atom prop_const_decel = XIGetKnownProperty(ACCEL_PROP_CONSTANT_DECELERATION);

+    XIChangeDeviceProperty(dev, prop_const_decel,

+                           XIGetKnownProperty(XATOM_FLOAT), 32,

+                           PropModeReplace, 1, &fval, FALSE);

+    XISetDevicePropertyDeletable(dev, prop_const_decel, FALSE);

+    return XIRegisterPropertyHandler(dev, AccelSetDecelProperty, NULL, NULL);

+}

+

+

+/**

+ * adaptive deceleration

+ */

+static int

+AccelSetAdaptDecelProperty(DeviceIntPtr dev, Atom atom,

+                           XIPropertyValuePtr val, BOOL checkOnly)

+{

+    DeviceVelocityPtr veloc;

+    float v, *ptr = &v;

+    int rc;

+    int nelem = 1;

+

+    if (atom != XIGetKnownProperty(ACCEL_PROP_ADAPTIVE_DECELERATION))

+        return Success;

+

+    veloc = GetDevicePredictableAccelData(dev);

+    if (!veloc)

+        return BadValue;

+    rc = XIPropToFloat(val, &nelem, &ptr);

+

+    if(checkOnly)

+    {

+        if (rc)

+            return rc;

+	return (v >= 1.0f) ? Success : BadValue;

+    }

+

+    if(v >= 1.0f)

+	veloc->min_acceleration = 1/v;

+

+    return Success;

+}

+

+static long

+AccelInitAdaptDecelProperty(DeviceIntPtr dev, DeviceVelocityPtr vel)

+{

+    float fval = 1.0/vel->min_acceleration;

+    Atom prop_adapt_decel = XIGetKnownProperty(ACCEL_PROP_ADAPTIVE_DECELERATION);

+

+    XIChangeDeviceProperty(dev, prop_adapt_decel, XIGetKnownProperty(XATOM_FLOAT), 32,

+                           PropModeReplace, 1, &fval, FALSE);

+    XISetDevicePropertyDeletable(dev, prop_adapt_decel, FALSE);

+    return XIRegisterPropertyHandler(dev, AccelSetAdaptDecelProperty, NULL, NULL);

+}

+

+

+/**

+ * velocity scaling

+ */

+static int

+AccelSetScaleProperty(DeviceIntPtr dev, Atom atom,

+                      XIPropertyValuePtr val, BOOL checkOnly)

+{

+    DeviceVelocityPtr vel;

+    float v, *ptr = &v;

+    int rc;

+    int nelem = 1;

+

+    if (atom != XIGetKnownProperty(ACCEL_PROP_VELOCITY_SCALING))

+        return Success;

+

+    vel = GetDevicePredictableAccelData(dev);

+    if (!vel)

+        return BadValue;

+    rc = XIPropToFloat(val, &nelem, &ptr);

+

+    if (checkOnly)

+    {

+        if (rc)

+            return rc;

+

+        return (v > 0) ? Success : BadValue;

+    }

+

+    if(v > 0)

+	vel->corr_mul = v;

+

+    return Success;

+}

+

+static long

+AccelInitScaleProperty(DeviceIntPtr dev, DeviceVelocityPtr vel)

+{

+    float fval = vel->corr_mul;

+    Atom prop_velo_scale = XIGetKnownProperty(ACCEL_PROP_VELOCITY_SCALING);

+

+    XIChangeDeviceProperty(dev, prop_velo_scale, XIGetKnownProperty(XATOM_FLOAT), 32,

+                           PropModeReplace, 1, &fval, FALSE);

+    XISetDevicePropertyDeletable(dev, prop_velo_scale, FALSE);

+    return XIRegisterPropertyHandler(dev, AccelSetScaleProperty, NULL, NULL);

+}

+

+static BOOL

+InitializePredictableAccelerationProperties(

+    DeviceIntPtr dev,

+    DeviceVelocityPtr  vel,

+    PredictableAccelSchemePtr schemeData)

+{

+    int num_handlers = 4;

+    if(!vel)

+        return FALSE;

+

+    schemeData->prop_handlers = calloc(num_handlers, sizeof(long));

+    if (!schemeData->prop_handlers)

+        return FALSE;

+    schemeData->num_prop_handlers = num_handlers;

+    schemeData->prop_handlers[0] = AccelInitProfileProperty(dev, vel);

+    schemeData->prop_handlers[1] = AccelInitDecelProperty(dev, vel);

+    schemeData->prop_handlers[2] = AccelInitAdaptDecelProperty(dev, vel);

+    schemeData->prop_handlers[3] = AccelInitScaleProperty(dev, vel);

+

+    return TRUE;

+}

+

+BOOL

+DeletePredictableAccelerationProperties(

+    DeviceIntPtr dev,

+    PredictableAccelSchemePtr scheme)

+{

+    DeviceVelocityPtr vel;

+    Atom prop;

+    int i;

+

+    prop = XIGetKnownProperty(ACCEL_PROP_VELOCITY_SCALING);

+    XIDeleteDeviceProperty(dev, prop, FALSE);

+    prop = XIGetKnownProperty(ACCEL_PROP_ADAPTIVE_DECELERATION);

+    XIDeleteDeviceProperty(dev, prop, FALSE);

+    prop = XIGetKnownProperty(ACCEL_PROP_CONSTANT_DECELERATION);

+    XIDeleteDeviceProperty(dev, prop, FALSE);

+    prop = XIGetKnownProperty(ACCEL_PROP_PROFILE_NUMBER);

+    XIDeleteDeviceProperty(dev, prop, FALSE);

+

+    vel = GetDevicePredictableAccelData(dev);

+    if (vel) {

+        for (i = 0; i < scheme->num_prop_handlers; i++)

+            if (scheme->prop_handlers[i])

+                XIUnregisterPropertyHandler(dev, scheme->prop_handlers[i]);

+    }

+

+    free(scheme->prop_handlers);

+    scheme->prop_handlers = NULL;

+    scheme->num_prop_handlers = 0;

+    return TRUE;

+}

+

+/*********************

+ * Tracking logic

+ ********************/

+

+void

+InitTrackers(DeviceVelocityPtr vel, int ntracker)

+{

+    if(ntracker < 1){

+	ErrorF("(dix ptracc) invalid number of trackers\n");

+	return;

+    }

+    free(vel->tracker);

+    vel->tracker = (MotionTrackerPtr)calloc(ntracker, sizeof(MotionTracker));

+    vel->num_tracker = ntracker;

+}

+

+/**

+ * return a bit field of possible directions.

+ * 0 = N, 2 = E, 4 = S, 6 = W, in-between is as you guess.

+ * There's no reason against widening to more precise directions (<45 degrees),

+ * should it not perform well. All this is needed for is sort out non-linear

+ * motion, so precision isn't paramount. However, one should not flag direction

+ * too narrow, since it would then cut the linear segment to zero size way too

+ * often.

+ */

+static int

+DoGetDirection(int dx, int dy){

+    float r;

+    int i1, i2;

+    /* on insignificant mickeys, flag 135 degrees */

+    if(abs(dx) < 2 && abs(dy < 2)){

+	/* first check diagonal cases */

+	if(dx > 0 && dy > 0)

+	    return 4+8+16;

+	if(dx > 0 && dy < 0)

+	    return 1+2+4;

+	if(dx < 0 && dy < 0)

+	    return 1+128+64;

+	if(dx < 0 && dy > 0)

+	    return 16+32+64;

+        /* check axis-aligned directions */

+	if(dx > 0)

+            return 2+4+8; /*E*/

+        if(dx < 0)

+            return 128+64+32; /*W*/

+        if(dy > 0)

+            return 32+16+8; /*S*/

+        if(dy < 0)

+            return 128+1+2; /*N*/

+        return 255; /* shouldn't happen */

+    }

+    /* else, compute angle and set appropriate flags */

+#ifdef _ISOC99_SOURCE

+    r = atan2f(dy, dx);

+#else

+    r = atan2(dy, dx);

+#endif

+    /* find direction. We avoid r to become negative,

+     * since C has no well-defined modulo for such cases. */

+    r = (r+(M_PI*2.5))/(M_PI/4);

+    /* this intends to flag 2 directions (90 degrees),

+     * except on very well-aligned mickeys. */

+    i1 = (int)(r+0.1) % 8;

+    i2 = (int)(r+0.9) % 8;

+    if(i1 < 0 || i1 > 7 || i2 < 0 || i2 > 7)

+	return 255; /* shouldn't happen */

+    return 1 << i1 | 1 << i2;

+}

+

+#define DIRECTION_CACHE_RANGE 5

+#define DIRECTION_CACHE_SIZE (DIRECTION_CACHE_RANGE*2+1)

+

+/* cache DoGetDirection(). */

+static int

+GetDirection(int dx, int dy){

+    static int cache[DIRECTION_CACHE_SIZE][DIRECTION_CACHE_SIZE];

+    int i;

+    if (abs(dx) <= DIRECTION_CACHE_RANGE &&

+	abs(dy) <= DIRECTION_CACHE_RANGE) {

+	/* cacheable */

+	i = cache[DIRECTION_CACHE_RANGE+dx][DIRECTION_CACHE_RANGE+dy];

+	if(i != 0){

+	    return i;

+	}else{

+	    i = DoGetDirection(dx, dy);

+	    cache[DIRECTION_CACHE_RANGE+dx][DIRECTION_CACHE_RANGE+dy] = i;

+	    return i;

+	}

+    }else{

+	/* non-cacheable */

+	return DoGetDirection(dx, dy);

+    }

+}

+

+#undef DIRECTION_CACHE_RANGE

+#undef DIRECTION_CACHE_SIZE

+

+

+/* convert offset (age) to array index */

+#define TRACKER_INDEX(s, d) (((s)->num_tracker + (s)->cur_tracker - (d)) % (s)->num_tracker)

+

+static inline void

+FeedTrackers(DeviceVelocityPtr vel, int dx, int dy, int cur_t)

+{

+    int n;

+    for(n = 0; n < vel->num_tracker; n++){

+	vel->tracker[n].dx += dx;

+	vel->tracker[n].dy += dy;

+    }

+    n = (vel->cur_tracker + 1) % vel->num_tracker;

+    vel->tracker[n].dx = 0;

+    vel->tracker[n].dy = 0;

+    vel->tracker[n].time = cur_t;

+    vel->tracker[n].dir = GetDirection(dx, dy);

+    DebugAccelF("(dix prtacc) motion [dx: %i dy: %i dir:%i diff: %i]\n",

+                dx, dy, vel->tracker[n].dir,

+                cur_t - vel->tracker[vel->cur_tracker].time);

+    vel->cur_tracker = n;

+}

+

+/**

+ * calc velocity for given tracker, with

+ * velocity scaling.

+ * This assumes linear motion.

+ */

+static float

+CalcTracker(DeviceVelocityPtr vel, int offset, int cur_t){

+    int index = TRACKER_INDEX(vel, offset);

+    float dist = sqrt(  vel->tracker[index].dx * vel->tracker[index].dx

+                      + vel->tracker[index].dy * vel->tracker[index].dy);

+    int dtime = cur_t - vel->tracker[index].time;

+    if(dtime > 0)

+	return dist / dtime;

+    else

+	return 0;/* synonymous for NaN, since we're not C99 */

+}

+

+/* find the most plausible velocity. That is, the most distant

+ * (in time) tracker which isn't too old, beyond a linear partition,

+ * or simply too much off initial velocity.

+ *

+ * May return 0.

+ */

+static float

+QueryTrackers(DeviceVelocityPtr vel, int cur_t){

+    int n, offset, dir = 255, i = -1, age_ms;

+    /* initial velocity: a low-offset, valid velocity */

+    float iveloc = 0, res = 0, tmp, vdiff;

+    float vfac =  vel->corr_mul * vel->const_acceleration; /* premultiply */

+    /* loop from current to older data */

+    for(offset = 1; offset < vel->num_tracker; offset++){

+	n = TRACKER_INDEX(vel, offset);

+

+	age_ms = cur_t - vel->tracker[n].time;

+

+	/* bail out if data is too old and protect from overrun */

+	if (age_ms >= vel->reset_time || age_ms < 0) {

+	    DebugAccelF("(dix prtacc) query: tracker too old\n");

+	    break;

+	}

+

+	/*

+	 * this heuristic avoids using the linear-motion velocity formula

+	 * in CalcTracker() on motion that isn't exactly linear. So to get

+	 * even more precision we could subdivide as a final step, so possible

+	 * non-linearities are accounted for.

+	 */

+	dir &= vel->tracker[n].dir;

+	if(dir == 0){

+	    DebugAccelF("(dix prtacc) query: no longer linear\n");

+	    /* instead of breaking it we might also inspect the partition after,

+	     * but actual improvement with this is probably rare. */

+	    break;

+	}

+

+	tmp = CalcTracker(vel, offset, cur_t) * vfac;

+

+	if ((iveloc == 0 || offset <= vel->initial_range) && tmp != 0) {

+	    /* set initial velocity and result */

+	    res = iveloc = tmp;

+	    i = offset;

+	} else if (iveloc != 0 && tmp != 0) {

+	    vdiff = fabs(iveloc - tmp);

+	    if (vdiff <= vel->max_diff ||

+		vdiff/(iveloc + tmp) < vel->max_rel_diff) {

+		/* we're in range with the initial velocity,

+		 * so this result is likely better

+		 * (it contains more information). */

+		res = tmp;

+		i = offset;

+	    }else{

+		/* we're not in range, quit - it won't get better. */

+		DebugAccelF("(dix prtacc) query: tracker too different:"

+		            " old %2.2f initial %2.2f diff: %2.2f\n",

+		            tmp, iveloc, vdiff);

+		break;

+	    }

+	}

+    }

+    if(offset == vel->num_tracker){

+	DebugAccelF("(dix prtacc) query: last tracker in effect\n");

+	i = vel->num_tracker-1;

+    }

+    if(i>=0){

+        n = TRACKER_INDEX(vel, i);

+	DebugAccelF("(dix prtacc) result: offset %i [dx: %i dy: %i diff: %i]\n",

+	            i,

+	            vel->tracker[n].dx,

+	            vel->tracker[n].dy,

+	            cur_t - vel->tracker[n].time);

+    }

+    return res;

+}

+

+#undef TRACKER_INDEX

+

+/**

+ * Perform velocity approximation based on 2D 'mickeys' (mouse motion delta).

+ * return true if non-visible state reset is suggested

+ */

+short

+ProcessVelocityData2D(

+    DeviceVelocityPtr vel,

+    int dx,

+    int dy,

+    int time)

+{

+    float velocity;

+

+    vel->last_velocity = vel->velocity;

+

+    FeedTrackers(vel, dx, dy, time);

+

+    velocity = QueryTrackers(vel, time);

+

+    vel->velocity = velocity;

+    return velocity == 0;

+}

+

+/**

+ * this flattens significant ( > 1) mickeys a little bit for more steady

+ * constant-velocity response

+ */

+static inline float

+ApplySimpleSoftening(int od, int d)

+{

+    float res = d;

+    if (d <= 1 && d >= -1)

+        return res;

+    if (d > od)

+        res -= 0.5;

+    else if (d < od)

+        res += 0.5;

+    return res;

+}

+

+

+static void

+ApplySofteningAndConstantDeceleration(

+        DeviceVelocityPtr vel,

+        int dx,

+        int dy,

+        float* fdx,

+        float* fdy,

+        short do_soften)

+{

+    if (do_soften && vel->use_softening) {

+        *fdx = ApplySimpleSoftening(vel->last_dx, dx);

+        *fdy = ApplySimpleSoftening(vel->last_dy, dy);

+    } else {

+        *fdx = dx;

+        *fdy = dy;

+    }

+

+    *fdx *= vel->const_acceleration;

+    *fdy *= vel->const_acceleration;

+}

+

+/*

+ * compute the acceleration for given velocity and enforce min_acceleartion

+ */

+float

+BasicComputeAcceleration(

+    DeviceIntPtr dev,

+    DeviceVelocityPtr vel,

+    float velocity,

+    float threshold,

+    float acc){

+

+    float result;

+    result = vel->Profile(dev, vel, velocity, threshold, acc);

+

+    /* enforce min_acceleration */

+    if (result < vel->min_acceleration)

+	result = vel->min_acceleration;

+    return result;

+}

+

+/**

+ * Compute acceleration. Takes into account averaging, nv-reset, etc.

+ */

+static float

+ComputeAcceleration(

+    DeviceIntPtr dev,

+    DeviceVelocityPtr vel,

+    float threshold,

+    float acc){

+    float res;

+

+    if(vel->velocity <= 0){

+	DebugAccelF("(dix ptracc) profile skipped\n");

+        /*

+         * If we have no idea about device velocity, don't pretend it.

+         */

+	return 1;

+    }

+

+    if(vel->average_accel && vel->velocity != vel->last_velocity){

+	/* use simpson's rule to average acceleration between

+	 * current and previous velocity.

+	 * Though being the more natural choice, it causes a minor delay

+	 * in comparison, so it can be disabled. */

+	res = BasicComputeAcceleration(

+	          dev, vel, vel->velocity, threshold, acc);

+	res += BasicComputeAcceleration(

+	          dev, vel, vel->last_velocity, threshold, acc);

+	res += 4.0f * BasicComputeAcceleration(dev, vel,

+	                   (vel->last_velocity + vel->velocity) / 2,

+	                   threshold, acc);

+	res /= 6.0f;

+	DebugAccelF("(dix ptracc) profile average [%.2f ... %.2f] is %.3f\n",

+	            vel->velocity, vel->last_velocity, res);

+        return res;

+    }else{

+	res = BasicComputeAcceleration(dev, vel,

+	                               vel->velocity, threshold, acc);

+	DebugAccelF("(dix ptracc) profile sample [%.2f] is %.3f\n",

+               vel->velocity, res);

+	return res;

+    }

+}

+

+

+/*****************************************

+ *  Acceleration functions and profiles

+ ****************************************/

+

+/**

+ * Polynomial function similar previous one, but with f(1) = 1

+ */

+static float

+PolynomialAccelerationProfile(

+    DeviceIntPtr dev,

+    DeviceVelocityPtr vel,

+    float velocity,

+    float ignored,

+    float acc)

+{

+   return pow(velocity, (acc - 1.0) * 0.5);

+}

+

+

+/**

+ * returns acceleration for velocity.

+ * This profile selects the two functions like the old scheme did

+ */

+static float

+ClassicProfile(

+    DeviceIntPtr dev,

+    DeviceVelocityPtr vel,

+    float velocity,

+    float threshold,

+    float acc)

+{

+    if (threshold > 0) {

+	return SimpleSmoothProfile (dev,

+	                            vel,

+	                            velocity,

+                                    threshold,

+                                    acc);

+    } else {

+	return PolynomialAccelerationProfile (dev,

+	                                      vel,

+	                                      velocity,

+                                              0,

+                                              acc);

+    }

+}

+

+

+/**

+ * Power profile

+ * This has a completely smooth transition curve, i.e. no jumps in the

+ * derivatives.

+ *

+ * This has the expense of overall response dependency on min-acceleration.

+ * In effect, min_acceleration mimics const_acceleration in this profile.

+ */

+static float

+PowerProfile(

+    DeviceIntPtr dev,

+    DeviceVelocityPtr vel,

+    float velocity,

+    float threshold,

+    float acc)

+{

+    float vel_dist;

+

+    acc = (acc-1.0) * 0.1f + 1.0; /* without this, acc of 2 is unuseable */

+

+    if (velocity <= threshold)

+        return vel->min_acceleration;

+    vel_dist = velocity - threshold;

+    return (pow(acc, vel_dist)) * vel->min_acceleration;

+}

+

+

+/**

+ * just a smooth function in [0..1] -> [0..1]

+ *  - point symmetry at 0.5

+ *  - f'(0) = f'(1) = 0

+ *  - starts faster than a sinoid

+ *  - smoothness C1 (Cinf if you dare to ignore endpoints)

+ */

+static inline float

+CalcPenumbralGradient(float x){

+    x *= 2.0f;

+    x -= 1.0f;

+    return 0.5f + (x * sqrt(1.0f - x*x) + asin(x))/M_PI;

+}

+

+

+/**

+ * acceleration function similar to classic accelerated/unaccelerated,

+ * but with smooth transition in between (and towards zero for adaptive dec.).

+ */

+static float

+SimpleSmoothProfile(

+    DeviceIntPtr dev,

+    DeviceVelocityPtr vel,

+    float velocity,

+    float threshold,

+    float acc)

+{

+    if(velocity < 1.0f)

+        return CalcPenumbralGradient(0.5 + velocity*0.5) * 2.0f - 1.0f;

+    if(threshold < 1.0f)

+        threshold = 1.0f;

+    if (velocity <= threshold)

+        return 1;

+    velocity /= threshold;

+    if (velocity >= acc)

+        return acc;

+    else

+        return 1.0f + (CalcPenumbralGradient(velocity/acc) * (acc - 1.0f));

+}

+

+

+/**

+ * This profile uses the first half of the penumbral gradient as a start

+ * and then scales linearly.

+ */

+static float

+SmoothLinearProfile(

+    DeviceIntPtr dev,

+    DeviceVelocityPtr vel,

+    float velocity,

+    float threshold,

+    float acc)

+{

+    float res, nv;

+

+    if(acc > 1.0f)

+        acc -= 1.0f; /*this is so acc = 1 is no acceleration */

+    else

+        return 1.0f;

+

+    nv = (velocity - threshold) * acc * 0.5f;

+

+    if(nv < 0){

+        res = 0;

+    }else if(nv < 2){

+        res = CalcPenumbralGradient(nv*0.25f)*2.0f;

+    }else{

+        nv -= 2.0f;

+        res = nv * 2.0f / M_PI  /* steepness of gradient at 0.5 */

+              + 1.0f; /* gradient crosses 2|1 */

+    }

+    res += vel->min_acceleration;

+    return res;

+}

+

+

+/**

+ * From 0 to threshold, the response graduates smoothly from min_accel to

+ * acceleration. Beyond threshold it is exactly the specified acceleration.

+ */

+static float

+SmoothLimitedProfile(

+    DeviceIntPtr dev,

+    DeviceVelocityPtr vel,

+    float velocity,

+    float threshold,

+    float acc)

+{

+    float res;

+

+    if(velocity >= threshold || threshold == 0.0f)

+	return acc;

+

+    velocity /= threshold; /* should be [0..1[ now */

+

+    res = CalcPenumbralGradient(velocity) * (acc - vel->min_acceleration);

+

+    return vel->min_acceleration + res;

+}

+

+

+static float

+LinearProfile(

+    DeviceIntPtr dev,

+    DeviceVelocityPtr vel,

+    float velocity,

+    float threshold,

+    float acc)

+{

+    return acc * velocity;

+}

+

+static float

+NoProfile(

+    DeviceIntPtr dev,

+    DeviceVelocityPtr vel,

+    float velocity,

+    float threshold,

+    float acc)

+{

+    return 1.0f;

+}

+

+static PointerAccelerationProfileFunc

+GetAccelerationProfile(

+    DeviceVelocityPtr vel,

+    int profile_num)

+{

+    switch(profile_num){

+        case AccelProfileClassic:

+            return ClassicProfile;

+        case AccelProfileDeviceSpecific:

+            return vel->deviceSpecificProfile;

+        case AccelProfilePolynomial:

+            return PolynomialAccelerationProfile;

+        case AccelProfileSmoothLinear:

+            return SmoothLinearProfile;

+        case AccelProfileSimple:

+            return SimpleSmoothProfile;

+        case AccelProfilePower:

+            return PowerProfile;

+        case AccelProfileLinear:

+            return LinearProfile;

+        case AccelProfileSmoothLimited:

+            return SmoothLimitedProfile;

+        case AccelProfileNone:

+            return NoProfile;

+        default:

+            return NULL;

+    }

+}

+

+/**

+ * Set the profile by number.

+ * Intended to make profiles exchangeable at runtime.

+ * If you created a profile, give it a number here and in the header to

+ * make it selectable. In case some profile-specific init is needed, here

+ * would be a good place, since FreeVelocityData() also calls this with

+ * PROFILE_UNINITIALIZE.

+ *

+ * returns FALSE if profile number is unavailable, TRUE otherwise.

+ */

+int

+SetAccelerationProfile(

+    DeviceVelocityPtr vel,

+    int profile_num)

+{

+    PointerAccelerationProfileFunc profile;

+    profile = GetAccelerationProfile(vel, profile_num);

+

+    if(profile == NULL && profile_num != PROFILE_UNINITIALIZE)

+	return FALSE;

+

+    /* Here one could free old profile-private data */

+    free(vel->profile_private);

+    vel->profile_private = NULL;

+    /* Here one could init profile-private data */

+    vel->Profile = profile;

+    vel->statistics.profile_number = profile_num;

+    return TRUE;

+}

+

+/**********************************************

+ * driver interaction

+ **********************************************/

+

+

+/**

+ * device-specific profile

+ *

+ * The device-specific profile is intended as a hook for a driver

+ * which may want to provide an own acceleration profile.

+ * It should not rely on profile-private data, instead

+ * it should do init/uninit in the driver (ie. with DEVICE_INIT and friends).

+ * Users may override or choose it.

+ */

+void

+SetDeviceSpecificAccelerationProfile(

+        DeviceVelocityPtr vel,

+        PointerAccelerationProfileFunc profile)

+{

+    if(vel)

+	vel->deviceSpecificProfile = profile;

+}

+

+/**

+ * Use this function to obtain a DeviceVelocityPtr for a device. Will return NULL if

+ * the predictable acceleration scheme is not in effect.

+ */

+DeviceVelocityPtr

+GetDevicePredictableAccelData(

+	DeviceIntPtr dev)

+{

+    /*sanity check*/

+    if(!dev){

+	ErrorF("[dix] accel: DeviceIntPtr was NULL");

+	return NULL;

+    }

+    if( dev->valuator &&

+	dev->valuator->accelScheme.AccelSchemeProc ==

+	    acceleratePointerPredictable &&

+	dev->valuator->accelScheme.accelData != NULL){

+

+	return ((PredictableAccelSchemePtr)

+		dev->valuator->accelScheme.accelData)->vel;

+    }

+    return NULL;

+}

+

+/********************************

+ *  acceleration schemes

+ *******************************/

+

+/**

+ * Modifies valuators in-place.

+ * This version employs a velocity approximation algorithm to

+ * enable fine-grained predictable acceleration profiles.

+ */

+void

+acceleratePointerPredictable(

+    DeviceIntPtr dev,

+    ValuatorMask* val,

+    CARD32 evtime)

+{

+    float fdx, fdy, tmp, mult; /* no need to init */

+    int dx = 0, dy = 0, tmpi;

+    DeviceVelocityPtr velocitydata = GetDevicePredictableAccelData(dev);

+    Bool soften = TRUE;

+

+    if (!velocitydata)

+        return;

+

+    if (velocitydata->statistics.profile_number == AccelProfileNone &&

+        velocitydata->const_acceleration == 1.0f) {

+        return; /*we're inactive anyway, so skip the whole thing.*/

+    }

+

+    if (valuator_mask_isset(val, 0)) {

+        dx = valuator_mask_get(val, 0);

+    }

+

+    if (valuator_mask_isset(val, 1)) {

+        dy = valuator_mask_get(val, 1);

+    }

+

+    if (dx || dy){

+        /* reset non-visible state? */

+        if (ProcessVelocityData2D(velocitydata, dx , dy, evtime)) {

+            soften = FALSE;

+        }

+

+        if (dev->ptrfeed && dev->ptrfeed->ctrl.num) {

+            /* invoke acceleration profile to determine acceleration */

+            mult = ComputeAcceleration (dev, velocitydata,

+                                        dev->ptrfeed->ctrl.threshold,

+                                        (float)dev->ptrfeed->ctrl.num /

+                                            (float)dev->ptrfeed->ctrl.den);

+

+            if(mult != 1.0f || velocitydata->const_acceleration != 1.0f) {

+                ApplySofteningAndConstantDeceleration(velocitydata,

+                                                      dx, dy,

+                                                      &fdx, &fdy,

+                                                      (mult > 1.0f) && soften);

+

+                if (dx) {

+                    tmp = mult * fdx + dev->last.remainder[0];

+                    /* Since it may not be apparent: lrintf() does not offer

+                     * strong statements about rounding; however because we

+                     * process each axis conditionally, there's no danger

+                     * of a toggling remainder. Its lack of guarantees likely

+                     * makes it faster on the average target. */

+                    tmpi = lrintf(tmp);

+                    valuator_mask_set(val, 0, tmpi);

+                    dev->last.remainder[0] = tmp - (float)tmpi;

+                }

+                if (dy) {

+                    tmp = mult * fdy + dev->last.remainder[1];

+                    tmpi = lrintf(tmp);

+                    valuator_mask_set(val, 1, tmpi);

+                    dev->last.remainder[1] = tmp - (float)tmpi;

+                }

+                DebugAccelF("pos (%i | %i) remainders x: %.3f y: %.3f delta x:%.3f y:%.3f\n",

+                            *px, *py, dev->last.remainder[0], dev->last.remainder[1], fdx, fdy);

+            }

+        }

+    }

+    /* remember last motion delta (for softening/slow movement treatment) */

+    velocitydata->last_dx = dx;

+    velocitydata->last_dy = dy;

+}

+

+

+

+/**

+ * Originally a part of xf86PostMotionEvent; modifies valuators

+ * in-place. Retained mostly for embedded scenarios.

+ */

+void

+acceleratePointerLightweight(

+    DeviceIntPtr dev,

+    ValuatorMask* val,

+    CARD32 ignored)

+{

+    float mult = 0.0, tmpf;

+    int dx = 0, dy = 0, tmpi;

+

+    if (valuator_mask_isset(val, 0)) {

+        dx = valuator_mask_get(val, 0);

+    }

+

+    if (valuator_mask_isset(val, 1)) {

+        dy = valuator_mask_get(val, 1);

+    }

+

+    if (!dx && !dy)

+        return;

+

+    if (dev->ptrfeed && dev->ptrfeed->ctrl.num) {

+        /* modeled from xf86Events.c */

+        if (dev->ptrfeed->ctrl.threshold) {

+            if ((abs(dx) + abs(dy)) >= dev->ptrfeed->ctrl.threshold) {

+                tmpf = ((float)dx *

+                        (float)(dev->ptrfeed->ctrl.num)) /

+                       (float)(dev->ptrfeed->ctrl.den) +

+                       dev->last.remainder[0];

+                if (dx) {

+                    tmpi = (int) tmpf;

+                    valuator_mask_set(val, 0, tmpi);

+                    dev->last.remainder[0] = tmpf - (float)tmpi;

+                }

+

+                tmpf = ((float)dy *

+                        (float)(dev->ptrfeed->ctrl.num)) /

+                       (float)(dev->ptrfeed->ctrl.den) +

+                       dev->last.remainder[1];

+                if (dy) {

+                    tmpi = (int) tmpf;

+                    valuator_mask_set(val, 1, tmpi);

+                    dev->last.remainder[1] = tmpf - (float)tmpi;

+                }

+            }

+        }

+        else {

+            mult = pow((float)dx * (float)dx + (float)dy * (float)dy,

+                       ((float)(dev->ptrfeed->ctrl.num) /

+                        (float)(dev->ptrfeed->ctrl.den) - 1.0) /

+                       2.0) / 2.0;

+            if (dx) {

+                tmpf = mult * (float)dx +

+                       dev->last.remainder[0];

+                tmpi = (int) tmpf;

+                valuator_mask_set(val, 0, tmpi);

+                dev->last.remainder[0] = tmpf - (float)tmpi;

+            }

+            if (dy) {

+                tmpf = mult * (float)dy +

+                       dev->last.remainder[1];

+                tmpi = (int)tmpf;

+                valuator_mask_set(val, 1, tmpi);

+                dev->last.remainder[1] = tmpf - (float)tmpi;

+            }

+        }

+    }

+}