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-rw-r--r--xorg-server/dix/getevents.c940
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diff --git a/xorg-server/dix/getevents.c b/xorg-server/dix/getevents.c
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+/*
+ * Copyright © 2006 Nokia Corporation
+ * Copyright © 2006-2007 Daniel Stone
+ *
+ * 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.
+ *
+ * Author: Daniel Stone <daniel@fooishbar.org>
+ */
+
+#ifdef HAVE_DIX_CONFIG_H
+#include <dix-config.h>
+#endif
+
+#include <X11/X.h>
+#include <X11/keysym.h>
+#define NEED_EVENTS
+#define NEED_REPLIES
+#include <X11/Xproto.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"
+
+#ifdef XKB
+#include <X11/extensions/XKBproto.h>
+#include <xkbsrv.h>
+extern Bool XkbCopyKeymap(XkbDescPtr src, XkbDescPtr dst, Bool sendNotifies);
+#endif
+
+#ifdef PANORAMIX
+#include "panoramiX.h"
+#include "panoramiXsrv.h"
+#endif
+
+#include <X11/extensions/XI.h>
+#include <X11/extensions/XIproto.h>
+#include "exglobals.h"
+#include "exevents.h"
+#include "exglobals.h"
+#include "extnsionst.h"
+
+
+/* Maximum number of valuators, divided by six, rounded up, to get number
+ * of events. */
+#define MAX_VALUATOR_EVENTS 6
+
+/* Number of motion history events to store. */
+#define MOTION_HISTORY_SIZE 256
+
+
+/**
+ * Pick some arbitrary size for Xi motion history.
+ */
+_X_EXPORT int
+GetMotionHistorySize(void)
+{
+ return MOTION_HISTORY_SIZE;
+}
+
+static void
+set_key_down(DeviceIntPtr pDev, int key_code)
+{
+ pDev->key->postdown[key_code >> 3] |= (1 << (key_code & 7));
+}
+
+static void
+set_key_up(DeviceIntPtr pDev, int key_code)
+{
+ pDev->key->postdown[key_code >> 3] &= ~(1 << (key_code & 7));
+}
+
+static Bool
+key_is_down(DeviceIntPtr pDev, int key_code)
+{
+ return !!(pDev->key->postdown[key_code >> 3] & (1 << (key_code & 7)));
+}
+
+static Bool
+key_autorepeats(DeviceIntPtr pDev, int key_code)
+{
+ return !!(pDev->kbdfeed->ctrl.autoRepeats[key_code >> 3] &
+ (1 << (key_code & 7)));
+}
+
+/**
+ * Allocate the motion history buffer.
+ */
+_X_EXPORT void
+AllocateMotionHistory(DeviceIntPtr pDev)
+{
+ if (pDev->valuator->motion)
+ xfree(pDev->valuator->motion);
+
+ if (pDev->valuator->numMotionEvents < 1)
+ return;
+
+ pDev->valuator->motion = xalloc(((sizeof(INT32) * pDev->valuator->numAxes) +
+ sizeof(Time)) *
+ pDev->valuator->numMotionEvents);
+ pDev->valuator->first_motion = 0;
+ pDev->valuator->last_motion = 0;
+}
+
+
+/**
+ * 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.
+ */
+_X_EXPORT int
+GetMotionHistory(DeviceIntPtr pDev, xTimecoord *buff, unsigned long start,
+ unsigned long stop, ScreenPtr pScreen)
+{
+ char *ibuff = NULL, *obuff = (char *) buff;
+ int i = 0, ret = 0;
+ Time current;
+ /* The size of a single motion event. */
+ int size = (sizeof(INT32) * pDev->valuator->numAxes) + sizeof(Time);
+
+ if (!pDev->valuator || !pDev->valuator->numMotionEvents)
+ return 0;
+
+ 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) {
+ memcpy(obuff, ibuff, size);
+ obuff += size;
+ ret++;
+ }
+ }
+
+ return ret;
+}
+
+
+/**
+ * Update the motion history for a specific device, with the list of
+ * valuators.
+ */
+static void
+updateMotionHistory(DeviceIntPtr pDev, CARD32 ms, int first_valuator,
+ int num_valuators, int *valuators)
+{
+ char *buff = (char *) pDev->valuator->motion;
+
+ if (!pDev->valuator->numMotionEvents)
+ return;
+
+ buff += ((sizeof(INT32) * pDev->valuator->numAxes) + sizeof(CARD32)) *
+ pDev->valuator->last_motion;
+ memcpy(buff, &ms, sizeof(Time));
+
+ buff += sizeof(Time);
+ bzero(buff, sizeof(INT32) * pDev->valuator->numAxes);
+
+ buff += sizeof(INT32) * first_valuator;
+ memcpy(buff, valuators, sizeof(INT32) * num_valuators);
+
+ 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.
+ *
+ * Should be used in DIX as:
+ * xEvent *events = xcalloc(sizeof(xEvent), GetMaximumEventsNum());
+ *
+ * This MUST be absolutely constant, from init until exit.
+ */
+_X_EXPORT int
+GetMaximumEventsNum(void) {
+ /* Two base events -- core and device, plus valuator events. Multiply
+ * by two if we're doing non-XKB key repeats. */
+ int ret = 2 + MAX_VALUATOR_EVENTS;
+
+#ifdef XKB
+ if (noXkbExtension)
+#endif
+ ret *= 2;
+
+ return ret;
+}
+
+
+/* Originally a part of xf86PostMotionEvent; modifies valuators
+ * in-place. */
+static void
+acceleratePointer(DeviceIntPtr pDev, int first_valuator, int num_valuators,
+ int *valuators)
+{
+ 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 (pDev->ptrfeed && pDev->ptrfeed->ctrl.num) {
+ /* modeled from xf86Events.c */
+ if (pDev->ptrfeed->ctrl.threshold) {
+ if ((abs(dx) + abs(dy)) >= pDev->ptrfeed->ctrl.threshold) {
+ pDev->valuator->dxremaind = ((float)dx *
+ (float)(pDev->ptrfeed->ctrl.num)) /
+ (float)(pDev->ptrfeed->ctrl.den) +
+ pDev->valuator->dxremaind;
+ if (px) {
+ *px = (int)pDev->valuator->dxremaind;
+ pDev->valuator->dxremaind = pDev->valuator->dxremaind -
+ (float)(*px);
+ }
+
+ pDev->valuator->dyremaind = ((float)dy *
+ (float)(pDev->ptrfeed->ctrl.num)) /
+ (float)(pDev->ptrfeed->ctrl.den) +
+ pDev->valuator->dyremaind;
+ if (py) {
+ *py = (int)pDev->valuator->dyremaind;
+ pDev->valuator->dyremaind = pDev->valuator->dyremaind -
+ (float)(*py);
+ }
+ }
+ }
+ else {
+ mult = pow((float)dx * (float)dx + (float)dy * (float)dy,
+ ((float)(pDev->ptrfeed->ctrl.num) /
+ (float)(pDev->ptrfeed->ctrl.den) - 1.0) /
+ 2.0) / 2.0;
+ if (dx) {
+ pDev->valuator->dxremaind = mult * (float)dx +
+ pDev->valuator->dxremaind;
+ *px = (int)pDev->valuator->dxremaind;
+ pDev->valuator->dxremaind = pDev->valuator->dxremaind -
+ (float)(*px);
+ }
+ if (dy) {
+ pDev->valuator->dyremaind = mult * (float)dy +
+ pDev->valuator->dyremaind;
+ *py = (int)pDev->valuator->dyremaind;
+ pDev->valuator->dyremaind = pDev->valuator->dyremaind -
+ (float)(*py);
+ }
+ }
+ }
+}
+
+
+/**
+ * Clip an axis to its bounds, which are declared in the call to
+ * InitValuatorAxisClassStruct.
+ */
+static void
+clipAxis(DeviceIntPtr pDev, int axisNum, int *val)
+{
+ AxisInfoPtr axes = pDev->valuator->axes + axisNum;
+
+ /* No clipping if the value-range <= 0 */
+ if(axes->min_value < axes->min_value) {
+ if (*val < axes->min_value)
+ *val = axes->min_value;
+ if (*val > axes->max_value)
+ *val = axes->max_value;
+ }
+}
+
+/**
+ * Clip every axis in the list of valuators to its bounds.
+ */
+static void
+clipValuators(DeviceIntPtr pDev, int first_valuator, int num_valuators,
+ int *valuators)
+{
+ AxisInfoPtr axes = pDev->valuator->axes + first_valuator;
+ int i;
+
+ for (i = 0; i < num_valuators; i++, axes++)
+ clipAxis(pDev, i + first_valuator, &(valuators[i]));
+}
+
+
+/**
+ * Fills events with valuator events for pDev, as given by the other
+ * parameters.
+ *
+ * FIXME: Need to fix ValuatorClassRec to store all the valuators as
+ * last posted, not just x and y; otherwise relative non-x/y
+ * valuators, though a very narrow use case, will be broken.
+ */
+static xEvent *
+getValuatorEvents(xEvent *events, DeviceIntPtr pDev, int first_valuator,
+ int num_valuators, int *valuators) {
+ deviceValuator *xv = (deviceValuator *) events;
+ int i = 0, final_valuator = first_valuator + num_valuators;
+
+ for (i = first_valuator; i < final_valuator; i += 6, xv++, events++) {
+ xv->type = DeviceValuator;
+ xv->first_valuator = i;
+ xv->num_valuators = ((final_valuator - i) > 6) ? 6 : (final_valuator - i);
+ xv->deviceid = pDev->id;
+ switch (final_valuator - i) {
+ case 6:
+ xv->valuator5 = valuators[i + 5];
+ case 5:
+ xv->valuator4 = valuators[i + 4];
+ case 4:
+ xv->valuator3 = valuators[i + 3];
+ case 3:
+ xv->valuator2 = valuators[i + 2];
+ case 2:
+ xv->valuator1 = valuators[i + 1];
+ case 1:
+ xv->valuator0 = valuators[i];
+ }
+
+ if (i + 6 < final_valuator)
+ xv->deviceid |= MORE_EVENTS;
+ }
+
+ return events;
+}
+
+
+/**
+ * Convenience wrapper around GetKeyboardValuatorEvents, that takes no
+ * valuators.
+ */
+_X_EXPORT int
+GetKeyboardEvents(xEvent *events, DeviceIntPtr pDev, int type, int key_code) {
+ return GetKeyboardValuatorEvents(events, pDev, type, key_code, 0, 0, NULL);
+}
+
+
+/**
+ * Returns a set of keyboard events for KeyPress/KeyRelease, optionally
+ * also with valuator events. Handles Xi and XKB.
+ *
+ * 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.
+ *
+ * This function does not change the core keymap to that of the device;
+ * that is done by SwitchCoreKeyboard, which is called from
+ * mieqProcessInputEvents. If replacing that function, take care to call
+ * SetCoreKeyboard before processInputProc, so keymaps are altered to suit.
+ *
+ * Note that this function recurses! If called for non-XKB, a repeating
+ * key press will trigger a matching KeyRelease, as well as the
+ * KeyPresses.
+ */
+_X_EXPORT int
+GetKeyboardValuatorEvents(xEvent *events, DeviceIntPtr pDev, int type,
+ int key_code, int first_valuator,
+ int num_valuators, int *valuators) {
+ int numEvents = 0;
+ CARD32 ms = 0;
+ KeySym *map = pDev->key->curKeySyms.map;
+ KeySym sym;
+ deviceKeyButtonPointer *kbp = NULL;
+
+ if (!events)
+ return 0;
+
+ /* DO NOT WANT */
+ if (type != KeyPress && type != KeyRelease)
+ return 0;
+
+ if (!pDev->key || !pDev->focus || !pDev->kbdfeed ||
+ (pDev->coreEvents && !inputInfo.keyboard->key))
+ return 0;
+
+ if (key_code < 8 || key_code > 255)
+ return 0;
+
+ sym = map[(key_code - pDev->key->curKeySyms.minKeyCode)
+ * pDev->key->curKeySyms.mapWidth];
+
+ if (pDev->coreEvents)
+ numEvents = 2;
+ else
+ numEvents = 1;
+
+ if (num_valuators) {
+ if ((num_valuators / 6) + 1 > MAX_VALUATOR_EVENTS)
+ num_valuators = MAX_VALUATOR_EVENTS;
+ numEvents += (num_valuators / 6) + 1;
+ }
+
+#ifdef XKB
+ if (noXkbExtension)
+#endif
+ {
+ switch (sym) {
+ case XK_Num_Lock:
+ case XK_Caps_Lock:
+ case XK_Scroll_Lock:
+ case XK_Shift_Lock:
+ if (type == KeyRelease)
+ return 0;
+ else if (type == KeyPress && key_is_down(pDev, key_code))
+ type = KeyRelease;
+ }
+ }
+
+ /* Handle core repeating, via press/release/press/release.
+ * FIXME: In theory, if you're repeating with two keyboards in non-XKB,
+ * you could get unbalanced events here. */
+ if (type == KeyPress && key_is_down(pDev, key_code)) {
+ /* 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->modifierMap[key_code])
+ return 0;
+
+#ifdef XKB
+ if (noXkbExtension)
+#endif
+ {
+ numEvents += GetKeyboardValuatorEvents(events, pDev,
+ KeyRelease, key_code,
+ first_valuator, num_valuators,
+ valuators);
+ events += numEvents;
+ }
+ }
+
+ ms = GetTimeInMillis();
+
+ if (pDev->coreEvents) {
+ events->u.keyButtonPointer.time = ms;
+ events->u.u.type = type;
+ events->u.u.detail = key_code;
+ if (type == KeyPress)
+ set_key_down(inputInfo.keyboard, key_code);
+ else if (type == KeyRelease)
+ set_key_up(inputInfo.keyboard, key_code);
+ events++;
+ }
+
+ kbp = (deviceKeyButtonPointer *) events;
+ kbp->time = ms;
+ kbp->deviceid = pDev->id;
+ kbp->detail = key_code;
+ if (type == KeyPress) {
+ kbp->type = DeviceKeyPress;
+ set_key_down(pDev, key_code);
+ }
+ else if (type == KeyRelease) {
+ kbp->type = DeviceKeyRelease;
+ set_key_up(pDev, key_code);
+ }
+
+ events++;
+ if (num_valuators) {
+ kbp->deviceid |= MORE_EVENTS;
+ clipValuators(pDev, first_valuator, num_valuators, valuators);
+ events = getValuatorEvents(events, pDev, first_valuator,
+ num_valuators, valuators);
+ }
+
+ return numEvents;
+}
+
+
+/**
+ * Generate a series of xEvents (returned in xE) representing pointer
+ * motion, or button presses. Xi and XKB-aware.
+ *
+ * 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.
+ */
+_X_EXPORT int
+GetPointerEvents(xEvent *events, DeviceIntPtr pDev, int type, int buttons,
+ int flags, int first_valuator, int num_valuators,
+ int *valuators) {
+ int num_events = 0, final_valuator = 0;
+ CARD32 ms = 0;
+ deviceKeyButtonPointer *kbp = NULL;
+ DeviceIntPtr cp = inputInfo.pointer;
+ int x = 0, y = 0;
+ Bool coreOnly = (pDev == inputInfo.pointer);
+ ScreenPtr scr = miPointerGetScreen(pDev);
+
+ /* Sanity checks. */
+ if (type != MotionNotify && type != ButtonPress && type != ButtonRelease)
+ return 0;
+
+ if ((type == ButtonPress || type == ButtonRelease) && !pDev->button)
+ return 0;
+
+ /* FIXME: I guess it should, in theory, be possible to post button events
+ * from devices without valuators. */
+ if (!pDev->valuator)
+ return 0;
+
+ if (!coreOnly && pDev->coreEvents)
+ num_events = 2;
+ else
+ num_events = 1;
+
+ if (type == MotionNotify && num_valuators <= 0)
+ return 0;
+
+ /* Do we need to send a DeviceValuator event? */
+ if (!coreOnly && num_valuators) {
+ if ((((num_valuators - 1) / 6) + 1) > MAX_VALUATOR_EVENTS)
+ num_valuators = MAX_VALUATOR_EVENTS * 6;
+ num_events += ((num_valuators - 1) / 6) + 1;
+ }
+
+ final_valuator = num_valuators + first_valuator;
+
+ /* You fail. */
+ if (first_valuator < 0 || final_valuator > pDev->valuator->numAxes)
+ return 0;
+
+ ms = GetTimeInMillis();
+
+ /* Set x and y based on whether this is absolute or relative, and
+ * accelerate if we need to. */
+ if (flags & POINTER_ABSOLUTE) {
+ if (num_valuators >= 1 && first_valuator == 0) {
+ x = valuators[0];
+ }
+ else {
+ /* If we're sending core events but didn't provide a value,
+ * translate the core value (but use the device coord if
+ * it translates to the same coord to preserve sub-pixel
+ * coord information). If we're not sending core events use
+ * whatever value we have */
+ x = pDev->valuator->lastx;
+ if(pDev->coreEvents) {
+ int min = pDev->valuator->axes[0].min_value;
+ int max = pDev->valuator->axes[0].max_value;
+ if(min < max) {
+ if((int)((float)(x-min)*scr->width/(max-min+1)) != cp->valuator->lastx)
+ x = (int)((float)(cp->valuator->lastx)*(max-min+1)/scr->width)+min;
+ }
+ else
+ x = cp->valuator->lastx;
+ }
+ }
+
+ if (first_valuator <= 1 && num_valuators >= (2 - first_valuator)) {
+ y = valuators[1 - first_valuator];
+ }
+ else {
+ y = pDev->valuator->lasty;
+ if(pDev->coreEvents) {
+ int min = pDev->valuator->axes[1].min_value;
+ int max = pDev->valuator->axes[1].max_value;
+ if(min < max) {
+ if((int)((float)(y-min)*scr->height/(max-min+1)) != cp->valuator->lasty)
+ y = (int)((float)(cp->valuator->lasty)*(max-min+1)/scr->height)+min;
+ }
+ else
+ y = cp->valuator->lasty;
+ }
+ }
+
+ /* Clip both x and y to the defined limits (usually co-ord space limit). */
+ clipAxis(pDev, 0, &x);
+ clipAxis(pDev, 1, &y);
+ }
+ else {
+ if (flags & POINTER_ACCELERATE)
+ acceleratePointer(pDev, first_valuator, num_valuators,
+ valuators);
+
+ if (pDev->coreEvents) {
+ /* Get and convert the core pointer coordinate space into
+ * device coordinates. Use the device coords if it translates
+ * into the same position as the core to preserve relative sub-
+ * pixel movements from the device. */
+ int min = pDev->valuator->axes[0].min_value;
+ int max = pDev->valuator->axes[0].max_value;
+ if(min < max) {
+ x = pDev->valuator->lastx;
+ if((int)((float)(x-min)*scr->width/(max-min+1)) != cp->valuator->lastx)
+ x = (int)((float)(cp->valuator->lastx)*(max-min+1)/scr->width)+min;
+ }
+ else
+ x = cp->valuator->lastx;
+
+ min = pDev->valuator->axes[1].min_value;
+ max = pDev->valuator->axes[1].max_value;
+ if(min < max) {
+ y = pDev->valuator->lasty;
+ if((int)((float)(y-min)*scr->height/(max-min+1)) != cp->valuator->lasty)
+ y = (int)((float)(cp->valuator->lasty)*(max-min+1)/scr->height)+min;
+ }
+ else
+ y = cp->valuator->lasty;
+
+ /* Add relative movement */
+ if (first_valuator == 0 && num_valuators >= 1)
+ x += valuators[0];
+ if (first_valuator <= 1 && num_valuators >= (2 - first_valuator))
+ y += valuators[1 - first_valuator];
+ }
+ else {
+ x = pDev->valuator->lastx;
+ y = pDev->valuator->lasty;
+ if (first_valuator == 0 && num_valuators >= 1)
+ x += valuators[0];
+ if (first_valuator <= 1 && num_valuators >= (2 - first_valuator))
+ y += valuators[1 - first_valuator];
+
+ if(!coreOnly) {
+ /* Since we're not sending core-events we must clip both x and y
+ * to the defined limits so we don't run outside the box. */
+ clipAxis(pDev, 0, &x);
+ clipAxis(pDev, 1, &y);
+ }
+ }
+ }
+
+ pDev->valuator->lastx = x;
+ pDev->valuator->lasty = y;
+ /* Convert the dev coord back to screen coord if we're
+ * sending core events */
+ if (pDev->coreEvents) {
+ int min = pDev->valuator->axes[0].min_value;
+ int max = pDev->valuator->axes[0].max_value;
+ if(min < max)
+ x = (int)((float)(x-min)*scr->width/(max-min+1));
+ cp->valuator->lastx = x;
+ min = pDev->valuator->axes[1].min_value;
+ max = pDev->valuator->axes[1].max_value;
+ if(min < max)
+ y = (int)((float)(y-min)*scr->height/(max-min+1));
+ cp->valuator->lasty = y;
+ }
+
+ /* This takes care of crossing screens for us, as well as clipping
+ * to the current screen. Right now, we only have one history buffer,
+ * so we don't set this for both the device and core.*/
+ miPointerSetPosition(pDev, &x, &y, ms);
+
+ if (pDev->coreEvents) {
+ /* miPointerSetPosition may have changed screen */
+ scr = miPointerGetScreen(pDev);
+ if(x != cp->valuator->lastx) {
+ int min = pDev->valuator->axes[0].min_value;
+ int max = pDev->valuator->axes[0].max_value;
+ cp->valuator->lastx = pDev->valuator->lastx = x;
+ if(min < max)
+ pDev->valuator->lastx = (int)((float)(x)*(max-min+1)/scr->width)+min;
+ }
+ if(y != cp->valuator->lasty) {
+ int min = pDev->valuator->axes[1].min_value;
+ int max = pDev->valuator->axes[1].max_value;
+ cp->valuator->lasty = pDev->valuator->lasty = y;
+ if(min < max)
+ pDev->valuator->lasty = (int)((float)(y)*(max-min+1)/scr->height)+min;
+ }
+ }
+ else if (coreOnly) {
+ cp->valuator->lastx = x;
+ cp->valuator->lasty = y;
+ }
+
+ /* Drop x and y back into the valuators list, if they were originally
+ * present. */
+ if (first_valuator == 0 && num_valuators >= 1)
+ valuators[0] = pDev->valuator->lastx;
+ if (first_valuator <= 1 && num_valuators >= (2 - first_valuator))
+ valuators[1 - first_valuator] = pDev->valuator->lasty;
+
+ updateMotionHistory(pDev, ms, first_valuator, num_valuators, valuators);
+
+ /* for some reason inputInfo.pointer does not have coreEvents set */
+ if (coreOnly || pDev->coreEvents) {
+ events->u.u.type = type;
+ events->u.keyButtonPointer.time = ms;
+ events->u.keyButtonPointer.rootX = x;
+ events->u.keyButtonPointer.rootY = y;
+
+ if (type == ButtonPress || type == ButtonRelease) {
+ /* We hijack SetPointerMapping to work on all core-sending
+ * devices, so we use the device-specific map here instead of
+ * the core one. */
+ events->u.u.detail = pDev->button->map[buttons];
+ }
+ else {
+ events->u.u.detail = 0;
+ }
+
+ events++;
+ }
+
+ if (!coreOnly) {
+ kbp = (deviceKeyButtonPointer *) events;
+ kbp->time = ms;
+ kbp->deviceid = pDev->id;
+
+ if (type == MotionNotify) {
+ kbp->type = DeviceMotionNotify;
+ }
+ else {
+ if (type == ButtonPress)
+ kbp->type = DeviceButtonPress;
+ else if (type == ButtonRelease)
+ kbp->type = DeviceButtonRelease;
+ kbp->detail = pDev->button->map[buttons];
+ }
+
+ kbp->root_x = pDev->valuator->lastx;
+ kbp->root_y = pDev->valuator->lasty;
+
+ events++;
+ if (num_valuators) {
+ kbp->deviceid |= MORE_EVENTS;
+ clipValuators(pDev, first_valuator, num_valuators, valuators);
+ events = getValuatorEvents(events, pDev, first_valuator,
+ num_valuators, valuators);
+ }
+ }
+
+ return num_events;
+}
+
+
+/**
+ * Post ProximityIn/ProximityOut events, 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.
+ */
+_X_EXPORT int
+GetProximityEvents(xEvent *events, DeviceIntPtr pDev, int type,
+ int first_valuator, int num_valuators, int *valuators)
+{
+ int num_events = 1;
+ deviceKeyButtonPointer *kbp = (deviceKeyButtonPointer *) events;
+
+ /* Sanity checks. */
+ if (type != ProximityIn && type != ProximityOut)
+ return 0;
+
+ if (!pDev->valuator)
+ return 0;
+
+ /* Do we need to send a DeviceValuator event? */
+ if ((pDev->valuator->mode & 1) == Relative)
+ num_valuators = 0;
+
+ if (num_valuators) {
+ if ((((num_valuators - 1) / 6) + 1) > MAX_VALUATOR_EVENTS)
+ num_valuators = MAX_VALUATOR_EVENTS * 6;
+ num_events += ((num_valuators - 1) / 6) + 1;
+ }
+
+ /* You fail. */
+ if (first_valuator < 0 ||
+ (num_valuators + first_valuator) > pDev->valuator->numAxes)
+ return 0;
+
+ kbp->type = type;
+ kbp->deviceid = pDev->id;
+ kbp->detail = 0;
+ kbp->time = GetTimeInMillis();
+
+ if (num_valuators) {
+ kbp->deviceid |= MORE_EVENTS;
+ events++;
+ clipValuators(pDev, first_valuator, num_valuators, valuators);
+ events = getValuatorEvents(events, pDev, first_valuator,
+ num_valuators, valuators);
+ }
+
+ return num_events;
+}
+
+
+/**
+ * Note that pDev was the last device to send a core event. This function
+ * copies the complete keymap from the originating device to the core
+ * device, and makes sure the appropriate notifications are generated.
+ *
+ * Call this just before processInputProc.
+ */
+_X_EXPORT void
+SwitchCoreKeyboard(DeviceIntPtr pDev)
+{
+ KeyClassPtr ckeyc = inputInfo.keyboard->key;
+ int i = 0;
+
+ if (pDev != dixLookupPrivate(&inputInfo.keyboard->devPrivates,
+ CoreDevicePrivateKey)) {
+ memcpy(ckeyc->modifierMap, pDev->key->modifierMap, MAP_LENGTH);
+ if (ckeyc->modifierKeyMap)
+ xfree(ckeyc->modifierKeyMap);
+ ckeyc->modifierKeyMap = xalloc(8 * pDev->key->maxKeysPerModifier);
+ memcpy(ckeyc->modifierKeyMap, pDev->key->modifierKeyMap,
+ (8 * pDev->key->maxKeysPerModifier));
+
+ ckeyc->maxKeysPerModifier = pDev->key->maxKeysPerModifier;
+ ckeyc->curKeySyms.minKeyCode = pDev->key->curKeySyms.minKeyCode;
+ ckeyc->curKeySyms.maxKeyCode = pDev->key->curKeySyms.maxKeyCode;
+ SetKeySymsMap(&ckeyc->curKeySyms, &pDev->key->curKeySyms);
+
+ /*
+ * Copy state from the extended keyboard to core. If you omit this,
+ * holding Ctrl on keyboard one, and pressing Q on keyboard two, will
+ * cause your app to quit. This feels wrong to me, hence the below
+ * code.
+ *
+ * XXX: If you synthesise core modifier events, the state will get
+ * clobbered here. You'll have to work out something sensible
+ * to fix that. Good luck.
+ */
+
+#define KEYBOARD_MASK (ShiftMask | LockMask | ControlMask | Mod1Mask | \
+ Mod2Mask | Mod3Mask | Mod4Mask | Mod5Mask)
+ ckeyc->state &= ~(KEYBOARD_MASK);
+ ckeyc->state |= (pDev->key->state & KEYBOARD_MASK);
+#undef KEYBOARD_MASK
+ for (i = 0; i < 8; i++)
+ ckeyc->modifierKeyCount[i] = pDev->key->modifierKeyCount[i];
+
+#ifdef XKB
+ if (!noXkbExtension && pDev->key->xkbInfo && pDev->key->xkbInfo->desc) {
+ if (!XkbCopyKeymap(pDev->key->xkbInfo->desc, ckeyc->xkbInfo->desc,
+ True))
+ FatalError("Couldn't pivot keymap from device to core!\n");
+ }
+#endif
+
+ SendMappingNotify(MappingKeyboard, ckeyc->curKeySyms.minKeyCode,
+ (ckeyc->curKeySyms.maxKeyCode -
+ ckeyc->curKeySyms.minKeyCode),
+ serverClient);
+ dixSetPrivate(&inputInfo.keyboard->devPrivates, CoreDevicePrivateKey,
+ pDev);
+ }
+}
+
+
+/**
+ * Note that pDev was the last function to send a core pointer event.
+ * Currently a no-op.
+ *
+ * Call this just before processInputProc.
+ */
+_X_EXPORT void
+SwitchCorePointer(DeviceIntPtr pDev)
+{
+ if (pDev != dixLookupPrivate(&inputInfo.pointer->devPrivates,
+ CoreDevicePrivateKey))
+ dixSetPrivate(&inputInfo.pointer->devPrivates,
+ CoreDevicePrivateKey, pDev);
+}
+
+
+/**
+ * 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(int x, int y, int screen, unsigned long time)
+{
+ xEvent xE;
+
+#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 += panoramiXdataPtr[0].x - panoramiXdataPtr[screen].x;
+ y += panoramiXdataPtr[0].y - panoramiXdataPtr[screen].y;
+ }
+#endif
+
+ memset(&xE, 0, sizeof(xEvent));
+ xE.u.u.type = MotionNotify;
+ xE.u.keyButtonPointer.rootX = x;
+ xE.u.keyButtonPointer.rootY = y;
+ xE.u.keyButtonPointer.time = time;
+
+ (*inputInfo.pointer->public.processInputProc)(&xE, inputInfo.pointer, 1);
+}