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-rw-r--r--xorg-server/dix/getevents.c2448
1 files changed, 1222 insertions, 1226 deletions
diff --git a/xorg-server/dix/getevents.c b/xorg-server/dix/getevents.c
index 1ff868190..2912237f6 100644
--- a/xorg-server/dix/getevents.c
+++ b/xorg-server/dix/getevents.c
@@ -1,1226 +1,1222 @@
-/*
- * 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 "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 <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 "exglobals.h"
-#include "exevents.h"
-#include "exglobals.h"
-#include "extnsionst.h"
-#include "listdev.h" /* for sizing up DeviceClassesChangedEvent */
-
-#ifdef _MSC_VER
-float roundf(float f)
-{
- return ((f<0.0f) ? ceil(f-.5) : floor (f+.5));
-}
-#define lroundf(val) ((int)roundf(val))
-#endif
-
-/* 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_key_down(DeviceIntPtr pDev, int key_code, int type)
-{
- if (type == KEY_PROCESSED)
- pDev->key->down[key_code >> 3] |= (1 << (key_code & 7));
- else
- pDev->key->postdown[key_code >> 3] |= (1 << (key_code & 7));
-}
-
-void
-set_key_up(DeviceIntPtr pDev, int key_code, int type)
-{
- if (type == KEY_PROCESSED)
- pDev->key->down[key_code >> 3] &= ~(1 << (key_code & 7));
- else
- pDev->key->postdown[key_code >> 3] &= ~(1 << (key_code & 7));
-}
-
-Bool
-key_is_down(DeviceIntPtr pDev, int key_code, int type)
-{
- int ret = 0;
-
- if (type & KEY_PROCESSED)
- ret |= !!(pDev->key->down[key_code >> 3] & (1 << (key_code & 7)));
- else if (type & KEY_POSTED)
- ret |= !!(pDev->key->postdown[key_code >> 3] & (1 << (key_code & 7)));
-
- 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, int first, int num, int *valuators, int32_t* data)
-{
- int i;
- for (i = first; i < first + num; i++)
- SetBit(event->valuators.mask, i);
-
- memcpy(&data[first], valuators, num * sizeof(uint32_t));
-}
-
-
-static void
-set_valuators(DeviceIntPtr dev, DeviceEvent* event, int first_valuator,
- int num_valuators, int *valuators)
-{
- int i;
-
- for (i = first_valuator; i < first_valuator + num_valuators; i++)
- {
- SetBit(event->valuators.mask, i);
- if (dev->valuator->mode == Absolute)
- SetBit(event->valuators.mode, i);
- event->valuators.data_frac[i] =
- dev->last.remainder[i] * (1 << 16) * (1 << 16);
- }
-
- memcpy(&event->valuators.data[first_valuator],
- valuators, num_valuators * sizeof(uint32_t));
-
-}
-
-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;
- /* This should, eventually, be a per-axis mode */
- dce->valuators[i].mode = slave->valuator->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[0], 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;
- if (pDev->valuator->motion)
- xfree(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
- size = sizeof(INT32) * pDev->valuator->numAxes;
-
- size += sizeof(Time);
-
- pDev->valuator->motion = xcalloc(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 = xalloc(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 (first_valuator > 0):
- * min_val == max_val == val == 0.
- */
-static void
-updateMotionHistory(DeviceIntPtr pDev, CARD32 ms, int first_valuator,
- int num_valuators, 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);
- buff += 3 * sizeof(INT32) * first_valuator;
-
- for (i = first_valuator; i < first_valuator + num_valuators; i++)
- {
- if (i >= v->numAxes)
- break;
- 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 - first_valuator], 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);
- 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.
- *
- * 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 = pDev->valuator->axes + axisNum;
- /* InitValuatoraAxisStruct ensures that (min < max). */
-
- if (axisNum >= pDev->valuator->numAxes)
- return;
-
- /* 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, int first_valuator, int num_valuators,
- int *valuators)
-{
- int i;
-
- for (i = 0; i < num_valuators; i++)
- clipAxis(pDev, i + first_valuator, &(valuators[i]));
-}
-
-/**
- * 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.
- */
-static 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);
- updateSlaveDeviceCoords(master, dev);
- master->last.slave = dev;
- master->last.numValuators = dev->last.numValuators;
- (*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 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.
- */
-static void
-moveAbsolute(DeviceIntPtr dev, int *x, int *y,
- int first, int num, int *valuators)
-{
- int i;
-
-
- if (num >= 1 && first == 0)
- *x = *(valuators + 0);
- else
- *x = dev->last.valuators[0];
-
- if (first <= 1 && num >= (2 - first))
- *y = *(valuators + 1 - first);
- else
- *y = dev->last.valuators[1];
-
- clipAxis(dev, 0, x);
- clipAxis(dev, 1, y);
-
- i = (first > 2) ? 0 : 2;
- for (; i < num; i++)
- {
- dev->last.valuators[i + first] = valuators[i];
- clipAxis(dev, i, &dev->last.valuators[i + first]);
- }
-}
-
-/**
- * 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 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.
- */
-static void
-moveRelative(DeviceIntPtr dev, int *x, int *y,
- int first, int num, int *valuators)
-{
- int i;
-
- *x = dev->last.valuators[0];
- *y = dev->last.valuators[1];
-
- if (num >= 1 && first == 0)
- *x += *(valuators +0);
-
- if (first <= 1 && num >= (2 - first))
- *y += *(valuators + 1 - first);
-
- /* 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->u.master) {
- clipAxis(dev, 0, x);
- clipAxis(dev, 1, y);
- }
-
- /* calc other axes, clip, drop back into valuators */
- i = (first > 2) ? 0 : 2;
- for (; i < num; i++)
- {
- dev->last.valuators[i + first] += valuators[i];
- clipAxis(dev, i, &dev->last.valuators[i + first]);
- valuators[i] = dev->last.valuators[i + first];
- }
-}
-
-/**
- * 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->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->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];
- }
-
- 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 (dev->u.master) {
- dev->u.master->last.valuators[0] = *screenx;
- dev->u.master->last.valuators[1] = *screeny;
- dev->u.master->last.remainder[0] = *screenx_frac;
- dev->u.master->last.remainder[1] = *screeny_frac;
- }
-
- /* 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 first First valuator to append to history.
- * @param num Total number of valuators to append to history.
- * @param ms Current time
- */
-static void
-updateHistory(DeviceIntPtr dev, int first, int num, CARD32 ms)
-{
- updateMotionHistory(dev, ms, first, num, &dev->last.valuators[first]);
- if (dev->u.master)
- {
- DeviceIntPtr master = GetMaster(dev, MASTER_POINTER);
- updateMotionHistory(master, ms, first, num, &dev->last.valuators[first]);
- }
-}
-
-/**
- * Convenience wrapper around GetKeyboardValuatorEvents, that takes no
- * valuators.
- */
-int
-GetKeyboardEvents(EventList *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.
- *
- * DOES NOT GENERATE CORE EVENTS! Core events are created when processing the
- * event (ProcessOtherEvent).
- *
- * 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.
- */
-int
-GetKeyboardValuatorEvents(EventList *events, DeviceIntPtr pDev, int type,
- int key_code, int first_valuator,
- int num_valuators, int *valuators) {
- int num_events = 0;
- CARD32 ms = 0;
- DeviceEvent *event;
- RawDeviceEvent *raw;
-
- /* 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++;
-
- init_raw(pDev, raw, ms, type, key_code);
- set_raw_valuators(raw, first_valuator, num_valuators, valuators,
- raw->valuators.data_raw);
-
- if (num_valuators)
- clipValuators(pDev, first_valuator, num_valuators, valuators);
-
- set_raw_valuators(raw, first_valuator, num_valuators, valuators,
- 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);
- }
-
- if (num_valuators)
- clipValuators(pDev, first_valuator, num_valuators, valuators);
-
- set_valuators(pDev, event, first_valuator, num_valuators, valuators);
-
- 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)xcalloc(num_events, sizeof(EventList));
- if (!events)
- return NULL;
-
- for (i = 0; i < num_events; i++)
- {
- events[i].evlen = sizeof(InternalEvent);
- events[i].event = xcalloc(1, sizeof(InternalEvent));
- if (!events[i].event)
- {
- /* rollback */
- while(i--)
- xfree(events[i].event);
- xfree(events);
- events = NULL;
- break;
- }
- }
-
- return events;
-}
-
-/**
- * Allocs min_size memory for each event in the list.
- */
-void
-SetMinimumEventSize(EventListPtr list, int num_events, int min_size)
-{
- if (!list)
- return;
-
- while(num_events--)
- {
- if (list[num_events].evlen < min_size)
- {
- list[num_events].evlen = min_size;
- list[num_events].event = realloc(list[num_events].event, min_size);
- if (!list[num_events].event)
- {
- FatalError("[dix] Failed to set event list's "
- "min_size to %d.\n", min_size);
- }
- }
- }
-}
-
-/**
- * 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--)
- xfree(list[num_events].event);
- xfree(list);
-}
-
-/**
- * Generate a series of xEvents (filled into the EventList) representing
- * pointer motion, or button presses. Xi and XKB-aware.
- *
- * DOES NOT GENERATE CORE EVENTS! Core events are created when processing the
- * event (ProcessOtherEvent).
- *
- * 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, int first_valuator, int num_valuators,
- int *valuators) {
- 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);
-
- /* refuse events from disabled devices */
- if (!pDev->enabled)
- return 0;
-
- ms = GetTimeInMillis(); /* before pointer update to help precision */
-
- if (!scr || !pDev->valuator || first_valuator < 0 ||
- ((num_valuators + first_valuator) > pDev->valuator->numAxes) ||
- (type != MotionNotify && type != ButtonPress && type != ButtonRelease) ||
- (type != MotionNotify && !pDev->button) ||
- ((type == ButtonPress || type == ButtonRelease) && !buttons) ||
- (type == MotionNotify && num_valuators <= 0))
- return 0;
-
- events = updateFromMaster(events, pDev, DEVCHANGE_POINTER_EVENT, &num_events);
-
- raw = (RawDeviceEvent*)events->event;
- events++;
- num_events++;
-
- init_raw(pDev, raw, ms, type, buttons);
- set_raw_valuators(raw, first_valuator, num_valuators, valuators,
- raw->valuators.data_raw);
-
- if (flags & POINTER_ABSOLUTE)
- {
- if (flags & POINTER_SCREEN) /* valuators are in screen coords */
- {
-
- if (num_valuators >= 1 && first_valuator == 0)
- valuators[0] = rescaleValuatorAxis(valuators[0], 0.0, &x_frac, NULL,
- pDev->valuator->axes + 0,
- scr->width);
- if (first_valuator <= 1 && num_valuators >= (2 - first_valuator))
- valuators[1 - first_valuator] = rescaleValuatorAxis(valuators[1 - first_valuator], 0.0, &y_frac, NULL,
- pDev->valuator->axes + 1,
- scr->height);
- }
-
- moveAbsolute(pDev, &x, &y, first_valuator, num_valuators, valuators);
- } else {
- if (flags & POINTER_ACCELERATE) {
- accelPointer(pDev, first_valuator, num_valuators, valuators, 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, first_valuator, num_valuators, valuators);
- }
-
- set_raw_valuators(raw, first_valuator, num_valuators, valuators,
- raw->valuators.data);
-
- positionSprite(pDev, &x, &y, x_frac, y_frac, scr, &cx, &cy, &cx_frac, &cy_frac);
- updateHistory(pDev, first_valuator, num_valuators, ms);
-
- /* Update the valuators with the true value sent to the client*/
- if (num_valuators >= 1 && first_valuator == 0)
- valuators[0] = x;
- if (first_valuator <= 1 && num_valuators >= (2 - first_valuator))
- valuators[1 - first_valuator] = y;
-
- if (num_valuators)
- clipValuators(pDev, first_valuator, num_valuators, valuators);
-
- 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;
- pDev->button->postdown[buttons >> 3] |= (1 << (buttons & 7));
- }
- else if (type == ButtonRelease) {
- event->type = ET_ButtonRelease;
- pDev->button->postdown[buttons >> 3] &= ~(1 << (buttons & 7));
- }
- 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, 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.
- */
-int
-GetProximityEvents(EventList *events, DeviceIntPtr pDev, int type,
- int first_valuator, int num_valuators, int *valuators)
-{
- int num_events = 1;
- DeviceEvent *event;
-
- /* refuse events from disabled devices */
- if (!pDev->enabled)
- return 0;
-
- /* 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;
-
- /* You fail. */
- if (first_valuator < 0 ||
- (num_valuators + first_valuator) > pDev->valuator->numAxes)
- return 0;
-
- 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;
-
- if (num_valuators)
- clipValuators(pDev, first_valuator, num_valuators, valuators);
-
- set_valuators(pDev, event, first_valuator, num_valuators, valuators);
-
- 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 += panoramiXdataPtr[0].x - panoramiXdataPtr[screen].x;
- y += panoramiXdataPtr[0].y - panoramiXdataPtr[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 "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 <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 "exglobals.h"
+#include "exevents.h"
+#include "exglobals.h"
+#include "extnsionst.h"
+#include "listdev.h" /* for sizing up DeviceClassesChangedEvent */
+
+#ifdef _MSC_VER
+float roundf(float f)
+{
+ return ((f<0.0f) ? ceil(f-.5) : floor (f+.5));
+}
+#define lroundf(val) ((int)roundf(val))
+#endif
+
+/* 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_key_down(DeviceIntPtr pDev, int key_code, int type)
+{
+ if (type == KEY_PROCESSED)
+ pDev->key->down[key_code >> 3] |= (1 << (key_code & 7));
+ else
+ pDev->key->postdown[key_code >> 3] |= (1 << (key_code & 7));
+}
+
+void
+set_key_up(DeviceIntPtr pDev, int key_code, int type)
+{
+ if (type == KEY_PROCESSED)
+ pDev->key->down[key_code >> 3] &= ~(1 << (key_code & 7));
+ else
+ pDev->key->postdown[key_code >> 3] &= ~(1 << (key_code & 7));
+}
+
+Bool
+key_is_down(DeviceIntPtr pDev, int key_code, int type)
+{
+ int ret = 0;
+
+ if (type & KEY_PROCESSED)
+ ret |= !!(pDev->key->down[key_code >> 3] & (1 << (key_code & 7)));
+ else if (type & KEY_POSTED)
+ ret |= !!(pDev->key->postdown[key_code >> 3] & (1 << (key_code & 7)));
+
+ 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, int first, int num, int *valuators, int32_t* data)
+{
+ int i;
+ for (i = first; i < first + num; i++)
+ SetBit(event->valuators.mask, i);
+
+ memcpy(&data[first], valuators, num * sizeof(uint32_t));
+}
+
+
+static void
+set_valuators(DeviceIntPtr dev, DeviceEvent* event, int first_valuator,
+ int num_valuators, int *valuators)
+{
+ int i;
+
+ for (i = first_valuator; i < first_valuator + num_valuators; i++)
+ {
+ SetBit(event->valuators.mask, i);
+ if (dev->valuator->mode == Absolute)
+ SetBit(event->valuators.mode, i);
+ event->valuators.data_frac[i] =
+ dev->last.remainder[i] * (1 << 16) * (1 << 16);
+ }
+
+ memcpy(&event->valuators.data[first_valuator],
+ valuators, num_valuators * sizeof(uint32_t));
+
+}
+
+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;
+ /* This should, eventually, be a per-axis mode */
+ dce->valuators[i].mode = slave->valuator->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[0], 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;
+ if (pDev->valuator->motion)
+ xfree(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
+ size = sizeof(INT32) * pDev->valuator->numAxes;
+
+ size += sizeof(Time);
+
+ pDev->valuator->motion = xcalloc(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 = xalloc(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 (first_valuator > 0):
+ * min_val == max_val == val == 0.
+ */
+static void
+updateMotionHistory(DeviceIntPtr pDev, CARD32 ms, int first_valuator,
+ int num_valuators, 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);
+ buff += 3 * sizeof(INT32) * first_valuator;
+
+ for (i = first_valuator; i < first_valuator + num_valuators; i++)
+ {
+ if (i >= v->numAxes)
+ break;
+ 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 - first_valuator], 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);
+ 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.
+ *
+ * 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 = pDev->valuator->axes + axisNum;
+ /* InitValuatoraAxisStruct ensures that (min < max). */
+
+ if (axisNum >= pDev->valuator->numAxes)
+ return;
+
+ /* 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, int first_valuator, int num_valuators,
+ int *valuators)
+{
+ int i;
+
+ for (i = 0; i < num_valuators; i++)
+ clipAxis(pDev, i + first_valuator, &(valuators[i]));
+}
+
+/**
+ * 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.
+ */
+static 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);
+ updateSlaveDeviceCoords(master, dev);
+ master->last.slave = dev;
+ master->last.numValuators = dev->last.numValuators;
+ (*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 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.
+ */
+static void
+moveAbsolute(DeviceIntPtr dev, int *x, int *y,
+ int first, int num, int *valuators)
+{
+ int i;
+
+
+ if (num >= 1 && first == 0)
+ *x = *(valuators + 0);
+ else
+ *x = dev->last.valuators[0];
+
+ if (first <= 1 && num >= (2 - first))
+ *y = *(valuators + 1 - first);
+ else
+ *y = dev->last.valuators[1];
+
+ clipAxis(dev, 0, x);
+ clipAxis(dev, 1, y);
+
+ i = (first > 2) ? 0 : 2;
+ for (; i < num; i++)
+ {
+ dev->last.valuators[i + first] = valuators[i];
+ clipAxis(dev, i, &dev->last.valuators[i + first]);
+ }
+}
+
+/**
+ * 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 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.
+ */
+static void
+moveRelative(DeviceIntPtr dev, int *x, int *y,
+ int first, int num, int *valuators)
+{
+ int i;
+
+ *x = dev->last.valuators[0];
+ *y = dev->last.valuators[1];
+
+ if (num >= 1 && first == 0)
+ *x += *(valuators +0);
+
+ if (first <= 1 && num >= (2 - first))
+ *y += *(valuators + 1 - first);
+
+ /* 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->u.master) {
+ clipAxis(dev, 0, x);
+ clipAxis(dev, 1, y);
+ }
+
+ /* calc other axes, clip, drop back into valuators */
+ i = (first > 2) ? 0 : 2;
+ for (; i < num; i++)
+ {
+ dev->last.valuators[i + first] += valuators[i];
+ clipAxis(dev, i, &dev->last.valuators[i + first]);
+ valuators[i] = dev->last.valuators[i + first];
+ }
+}
+
+/**
+ * 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->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->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];
+ }
+
+ 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 (dev->u.master) {
+ dev->u.master->last.valuators[0] = *screenx;
+ dev->u.master->last.valuators[1] = *screeny;
+ dev->u.master->last.remainder[0] = *screenx_frac;
+ dev->u.master->last.remainder[1] = *screeny_frac;
+ }
+
+ /* 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 first First valuator to append to history.
+ * @param num Total number of valuators to append to history.
+ * @param ms Current time
+ */
+static void
+updateHistory(DeviceIntPtr dev, int first, int num, CARD32 ms)
+{
+ updateMotionHistory(dev, ms, first, num, &dev->last.valuators[first]);
+ if (dev->u.master)
+ {
+ DeviceIntPtr master = GetMaster(dev, MASTER_POINTER);
+ updateMotionHistory(master, ms, first, num, &dev->last.valuators[first]);
+ }
+}
+
+/**
+ * Convenience wrapper around GetKeyboardValuatorEvents, that takes no
+ * valuators.
+ */
+int
+GetKeyboardEvents(EventList *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.
+ *
+ * DOES NOT GENERATE CORE EVENTS! Core events are created when processing the
+ * event (ProcessOtherEvent).
+ *
+ * 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.
+ */
+int
+GetKeyboardValuatorEvents(EventList *events, DeviceIntPtr pDev, int type,
+ int key_code, int first_valuator,
+ int num_valuators, int *valuators) {
+ int num_events = 0;
+ CARD32 ms = 0;
+ DeviceEvent *event;
+ RawDeviceEvent *raw;
+
+ /* 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++;
+
+ init_raw(pDev, raw, ms, type, key_code);
+ set_raw_valuators(raw, first_valuator, num_valuators, valuators,
+ raw->valuators.data_raw);
+
+ if (num_valuators)
+ clipValuators(pDev, first_valuator, num_valuators, valuators);
+
+ set_raw_valuators(raw, first_valuator, num_valuators, valuators,
+ 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);
+ }
+
+ if (num_valuators)
+ clipValuators(pDev, first_valuator, num_valuators, valuators);
+
+ set_valuators(pDev, event, first_valuator, num_valuators, valuators);
+
+ 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)xcalloc(num_events, sizeof(EventList));
+ if (!events)
+ return NULL;
+
+ for (i = 0; i < num_events; i++)
+ {
+ events[i].evlen = sizeof(InternalEvent);
+ events[i].event = xcalloc(1, sizeof(InternalEvent));
+ if (!events[i].event)
+ {
+ /* rollback */
+ while(i--)
+ xfree(events[i].event);
+ xfree(events);
+ events = NULL;
+ break;
+ }
+ }
+
+ return events;
+}
+
+/**
+ * Allocs min_size memory for each event in the list.
+ */
+void
+SetMinimumEventSize(EventListPtr list, int num_events, int min_size)
+{
+ if (!list)
+ return;
+
+ while(num_events--)
+ {
+ if (list[num_events].evlen < min_size)
+ {
+ list[num_events].evlen = min_size;
+ list[num_events].event = realloc(list[num_events].event, min_size);
+ if (!list[num_events].event)
+ {
+ FatalError("[dix] Failed to set event list's "
+ "min_size to %d.\n", min_size);
+ }
+ }
+ }
+}
+
+/**
+ * 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--)
+ xfree(list[num_events].event);
+ xfree(list);
+}
+
+/**
+ * Generate a series of xEvents (filled into the EventList) representing
+ * pointer motion, or button presses. Xi and XKB-aware.
+ *
+ * DOES NOT GENERATE CORE EVENTS! Core events are created when processing the
+ * event (ProcessOtherEvent).
+ *
+ * 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, int first_valuator, int num_valuators,
+ int *valuators) {
+ 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);
+
+ /* refuse events from disabled devices */
+ if (!pDev->enabled)
+ return 0;
+
+ ms = GetTimeInMillis(); /* before pointer update to help precision */
+
+ if (!scr || !pDev->valuator || first_valuator < 0 ||
+ ((num_valuators + first_valuator) > pDev->valuator->numAxes) ||
+ (type != MotionNotify && type != ButtonPress && type != ButtonRelease) ||
+ (type != MotionNotify && !pDev->button) ||
+ ((type == ButtonPress || type == ButtonRelease) && !buttons) ||
+ (type == MotionNotify && num_valuators <= 0))
+ return 0;
+
+ events = updateFromMaster(events, pDev, DEVCHANGE_POINTER_EVENT, &num_events);
+
+ raw = (RawDeviceEvent*)events->event;
+ events++;
+ num_events++;
+
+ init_raw(pDev, raw, ms, type, buttons);
+ set_raw_valuators(raw, first_valuator, num_valuators, valuators,
+ raw->valuators.data_raw);
+
+ if (flags & POINTER_ABSOLUTE)
+ {
+ if (flags & POINTER_SCREEN) /* valuators are in screen coords */
+ {
+
+ if (num_valuators >= 1 && first_valuator == 0)
+ valuators[0] = rescaleValuatorAxis(valuators[0], 0.0, &x_frac, NULL,
+ pDev->valuator->axes + 0,
+ scr->width);
+ if (first_valuator <= 1 && num_valuators >= (2 - first_valuator))
+ valuators[1 - first_valuator] = rescaleValuatorAxis(valuators[1 - first_valuator], 0.0, &y_frac, NULL,
+ pDev->valuator->axes + 1,
+ scr->height);
+ }
+
+ moveAbsolute(pDev, &x, &y, first_valuator, num_valuators, valuators);
+ } else {
+ if (flags & POINTER_ACCELERATE) {
+ accelPointer(pDev, first_valuator, num_valuators, valuators, 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, first_valuator, num_valuators, valuators);
+ }
+
+ set_raw_valuators(raw, first_valuator, num_valuators, valuators,
+ raw->valuators.data);
+
+ positionSprite(pDev, &x, &y, x_frac, y_frac, scr, &cx, &cy, &cx_frac, &cy_frac);
+ updateHistory(pDev, first_valuator, num_valuators, ms);
+
+ /* Update the valuators with the true value sent to the client*/
+ if (num_valuators >= 1 && first_valuator == 0)
+ valuators[0] = x;
+ if (first_valuator <= 1 && num_valuators >= (2 - first_valuator))
+ valuators[1 - first_valuator] = y;
+
+ if (num_valuators)
+ clipValuators(pDev, first_valuator, num_valuators, valuators);
+
+ 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;
+ pDev->button->postdown[buttons >> 3] |= (1 << (buttons & 7));
+ }
+ else if (type == ButtonRelease) {
+ event->type = ET_ButtonRelease;
+ pDev->button->postdown[buttons >> 3] &= ~(1 << (buttons & 7));
+ }
+ 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, 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.
+ */
+int
+GetProximityEvents(EventList *events, DeviceIntPtr pDev, int type,
+ int first_valuator, int num_valuators, int *valuators)
+{
+ int num_events = 1;
+ DeviceEvent *event;
+
+ /* refuse events from disabled devices */
+ if (!pDev->enabled)
+ return 0;
+
+ /* 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;
+
+ /* You fail. */
+ if (first_valuator < 0 ||
+ (num_valuators + first_valuator) > pDev->valuator->numAxes)
+ return 0;
+
+ 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;
+
+ if (num_valuators)
+ clipValuators(pDev, first_valuator, num_valuators, valuators);
+
+ set_valuators(pDev, event, first_valuator, num_valuators, valuators);
+
+ 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 += panoramiXdataPtr[0].x - panoramiXdataPtr[screen].x;
+ y += panoramiXdataPtr[0].y - panoramiXdataPtr[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);
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-09 15:34:06 +0000