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-rw-r--r--xorg-server/mi/mieq.c977
1 files changed, 489 insertions, 488 deletions
diff --git a/xorg-server/mi/mieq.c b/xorg-server/mi/mieq.c
index 2d5f23ea6..01b4ae2a3 100644
--- a/xorg-server/mi/mieq.c
+++ b/xorg-server/mi/mieq.c
@@ -1,488 +1,489 @@
-/*
- *
-Copyright 1990, 1998 The Open Group
-
-Permission to use, copy, modify, distribute, and sell this software and its
-documentation for any purpose is hereby granted without fee, provided that
-the above copyright notice appear in all copies and that both that
-copyright notice and this permission notice appear in supporting
-documentation.
-
-The above copyright notice and this permission notice shall be included in
-all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
-AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
-CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-
-Except as contained in this notice, the name of The Open Group shall not be
-used in advertising or otherwise to promote the sale, use or other dealings
-in this Software without prior written authorization from The Open Group.
- *
- * Author: Keith Packard, MIT X Consortium
- */
-
-/*
- * mieq.c
- *
- * Machine independent event queue
- *
- */
-
-#if HAVE_DIX_CONFIG_H
-#include <dix-config.h>
-#endif
-
-# include <X11/X.h>
-# include <X11/Xmd.h>
-# include <X11/Xproto.h>
-# include "misc.h"
-# include "windowstr.h"
-# include "pixmapstr.h"
-# include "inputstr.h"
-# include "mi.h"
-# include "mipointer.h"
-# include "scrnintstr.h"
-# include <X11/extensions/XI.h>
-# include <X11/extensions/XIproto.h>
-# include <X11/extensions/geproto.h>
-# include "extinit.h"
-# include "exglobals.h"
-# include "eventstr.h"
-
-#ifdef DPMSExtension
-# include "dpmsproc.h"
-# include <X11/extensions/dpmsconst.h>
-#endif
-
-#define QUEUE_SIZE 512
-
-#define EnqueueScreen(dev) dev->spriteInfo->sprite->pEnqueueScreen
-#define DequeueScreen(dev) dev->spriteInfo->sprite->pDequeueScreen
-
-typedef struct _Event {
- EventListPtr events;
- ScreenPtr pScreen;
- DeviceIntPtr pDev; /* device this event _originated_ from */
-} EventRec, *EventPtr;
-
-typedef struct _EventQueue {
- HWEventQueueType head, tail; /* long for SetInputCheck */
- CARD32 lastEventTime; /* to avoid time running backwards */
- int lastMotion; /* device ID if last event motion? */
- EventRec events[QUEUE_SIZE]; /* static allocation for signals */
- mieqHandler handlers[128]; /* custom event handler */
-} EventQueueRec, *EventQueuePtr;
-
-static EventQueueRec miEventQueue;
-
-#ifdef XQUARTZ
-#include <pthread.h>
-static pthread_mutex_t miEventQueueMutex = PTHREAD_MUTEX_INITIALIZER;
-
-extern BOOL serverInitComplete;
-extern pthread_mutex_t serverInitCompleteMutex;
-extern pthread_cond_t serverInitCompleteCond;
-
-static inline void wait_for_server_init(void) {
- /* If the server hasn't finished initializing, wait for it... */
- if(!serverInitComplete) {
- pthread_mutex_lock(&serverInitCompleteMutex);
- while(!serverInitComplete)
- pthread_cond_wait(&serverInitCompleteCond, &serverInitCompleteMutex);
- pthread_mutex_unlock(&serverInitCompleteMutex);
- }
-}
-#endif
-
-Bool
-mieqInit(void)
-{
- int i;
-
- miEventQueue.head = miEventQueue.tail = 0;
- miEventQueue.lastEventTime = GetTimeInMillis ();
- miEventQueue.lastMotion = FALSE;
- for (i = 0; i < 128; i++)
- miEventQueue.handlers[i] = NULL;
- for (i = 0; i < QUEUE_SIZE; i++)
- {
- if (miEventQueue.events[i].events == NULL) {
- EventListPtr evlist = InitEventList(1);
- if (!evlist)
- FatalError("Could not allocate event queue.\n");
- miEventQueue.events[i].events = evlist;
- }
- }
-
- SetInputCheck(&miEventQueue.head, &miEventQueue.tail);
- return TRUE;
-}
-
-void
-mieqFini(void)
-{
- int i;
- for (i = 0; i < QUEUE_SIZE; i++)
- {
- if (miEventQueue.events[i].events != NULL) {
- FreeEventList(miEventQueue.events[i].events, 1);
- miEventQueue.events[i].events = NULL;
- }
- }
-}
-
-/*
- * Must be reentrant with ProcessInputEvents. Assumption: mieqEnqueue
- * will never be interrupted. If this is called from both signal
- * handlers and regular code, make sure the signal is suspended when
- * called from regular code.
- */
-
-void
-mieqEnqueue(DeviceIntPtr pDev, InternalEvent *e)
-{
- unsigned int oldtail = miEventQueue.tail;
- EventListPtr evt;
- int isMotion = 0;
- int evlen;
- Time time;
-
-#ifdef XQUARTZ
- wait_for_server_init();
- pthread_mutex_lock(&miEventQueueMutex);
-#endif
-
- CHECKEVENT(e);
-
- /* avoid merging events from different devices */
- if (e->any.type == ET_Motion)
- isMotion = pDev->id;
-
- if (isMotion && isMotion == miEventQueue.lastMotion &&
- oldtail != miEventQueue.head) {
- oldtail = (oldtail - 1) % QUEUE_SIZE;
- }
- else {
- static int stuck = 0;
- /* Toss events which come in late. Usually this means your server's
- * stuck in an infinite loop somewhere, but SIGIO is still getting
- * handled. */
- if (((oldtail + 1) % QUEUE_SIZE) == miEventQueue.head) {
- if (!stuck) {
- ErrorF("[mi] EQ overflowing. The server is probably stuck "
- "in an infinite loop.\n");
- xorg_backtrace();
- stuck = 1;
- }
-#ifdef XQUARTZ
- pthread_mutex_unlock(&miEventQueueMutex);
-#endif
- return;
- }
- stuck = 0;
- }
-
- evlen = e->any.length;
- evt = miEventQueue.events[oldtail].events;
- if (evt->evlen < evlen)
- {
- evt->evlen = evlen;
- evt->event = xrealloc(evt->event, evt->evlen);
- if (!evt->event)
- {
- ErrorF("[mi] Running out of memory. Tossing event.\n");
-#ifdef XQUARTZ
- pthread_mutex_unlock(&miEventQueueMutex);
-#endif
- return;
- }
- }
-
- memcpy(evt->event, e, evlen);
-
- time = e->any.time;
- /* Make sure that event times don't go backwards - this
- * is "unnecessary", but very useful. */
- if (time < miEventQueue.lastEventTime &&
- miEventQueue.lastEventTime - time < 10000)
- e->any.time = miEventQueue.lastEventTime;
-
- miEventQueue.lastEventTime = ((InternalEvent*)evt->event)->any.time;
- miEventQueue.events[oldtail].pScreen = pDev ? EnqueueScreen(pDev) : NULL;
- miEventQueue.events[oldtail].pDev = pDev;
-
- miEventQueue.lastMotion = isMotion;
- miEventQueue.tail = (oldtail + 1) % QUEUE_SIZE;
-#ifdef XQUARTZ
- pthread_mutex_unlock(&miEventQueueMutex);
-#endif
-}
-
-void
-mieqSwitchScreen(DeviceIntPtr pDev, ScreenPtr pScreen, Bool fromDIX)
-{
-#ifdef XQUARTZ
- pthread_mutex_lock(&miEventQueueMutex);
-#endif
- EnqueueScreen(pDev) = pScreen;
- if (fromDIX)
- DequeueScreen(pDev) = pScreen;
-#ifdef XQUARTZ
- pthread_mutex_unlock(&miEventQueueMutex);
-#endif
-}
-
-void
-mieqSetHandler(int event, mieqHandler handler)
-{
-#ifdef XQUARTZ
- pthread_mutex_lock(&miEventQueueMutex);
-#endif
- if (handler && miEventQueue.handlers[event])
- ErrorF("[mi] mieq: warning: overriding existing handler %p with %p for "
- "event %d\n", miEventQueue.handlers[event], handler, event);
-
- miEventQueue.handlers[event] = handler;
-#ifdef XQUARTZ
- pthread_mutex_unlock(&miEventQueueMutex);
-#endif
-}
-
-/**
- * Change the device id of the given event to the given device's id.
- */
-static void
-ChangeDeviceID(DeviceIntPtr dev, InternalEvent* event)
-{
- switch(event->any.type)
- {
- case ET_Motion:
- case ET_KeyPress:
- case ET_KeyRelease:
- case ET_ButtonPress:
- case ET_ButtonRelease:
- case ET_ProximityIn:
- case ET_ProximityOut:
- case ET_Hierarchy:
- case ET_DeviceChanged:
- event->device_event.deviceid = dev->id;
- break;
-#if XFreeXDGA
- case ET_DGAEvent:
- break;
-#endif
- case ET_RawKeyPress:
- case ET_RawKeyRelease:
- case ET_RawButtonPress:
- case ET_RawButtonRelease:
- case ET_RawMotion:
- event->raw_event.deviceid = dev->id;
- break;
- default:
- ErrorF("[mi] Unknown event type (%d), cannot change id.\n",
- event->any.type);
- }
-}
-
-static void
-FixUpEventForMaster(DeviceIntPtr mdev, DeviceIntPtr sdev,
- InternalEvent* original, InternalEvent *master)
-{
- CHECKEVENT(original);
- CHECKEVENT(master);
- /* Ensure chained button mappings, i.e. that the detail field is the
- * value of the mapped button on the SD, not the physical button */
- if (original->any.type == ET_ButtonPress ||
- original->any.type == ET_ButtonRelease)
- {
- int btn = original->device_event.detail.button;
- if (!sdev->button)
- return; /* Should never happen */
-
- master->device_event.detail.button = sdev->button->map[btn];
- }
-}
-
-/**
- * Copy the given event into master.
- * @param sdev The slave device the original event comes from
- * @param original The event as it came from the EQ
- * @param copy The event after being copied
- * @return The master device or NULL if the device is a floating slave.
- */
-DeviceIntPtr
-CopyGetMasterEvent(DeviceIntPtr sdev,
- InternalEvent* original, InternalEvent *copy)
-{
- DeviceIntPtr mdev;
- int len = original->any.length;
-
- CHECKEVENT(original);
-
- /* ET_XQuartz has sdev == NULL */
- if (!sdev || !sdev->u.master)
- return NULL;
-
- switch(original->any.type)
- {
- case ET_KeyPress:
- case ET_KeyRelease:
- mdev = GetMaster(sdev, MASTER_KEYBOARD);
- break;
- case ET_ButtonPress:
- case ET_ButtonRelease:
- case ET_Motion:
- case ET_ProximityIn:
- case ET_ProximityOut:
- mdev = GetMaster(sdev, MASTER_POINTER);
- break;
- default:
- mdev = sdev->u.master;
- break;
- }
-
- memcpy(copy, original, len);
- ChangeDeviceID(mdev, copy);
- FixUpEventForMaster(mdev, sdev, original, copy);
-
- return mdev;
-}
-
-
-/**
- * Post the given @event through the device hierarchy, as appropriate.
- * Use this function if an event must be posted for a given device during the
- * usual event processing cycle.
- */
-void
-mieqProcessDeviceEvent(DeviceIntPtr dev,
- InternalEvent *event,
- ScreenPtr screen)
-{
- mieqHandler handler;
- int x = 0, y = 0;
- DeviceIntPtr master;
- InternalEvent mevent; /* master event */
-
- CHECKEVENT(event);
-
- /* Custom event handler */
- handler = miEventQueue.handlers[event->any.type];
-
- switch (event->any.type) {
- /* Catch events that include valuator information and check if they
- * are changing the screen */
- case ET_Motion:
- case ET_KeyPress:
- case ET_KeyRelease:
- case ET_ButtonPress:
- case ET_ButtonRelease:
- if (dev && screen && screen != DequeueScreen(dev) && !handler) {
- DequeueScreen(dev) = screen;
- x = event->device_event.root_x;
- y = event->device_event.root_y;
- NewCurrentScreen (dev, DequeueScreen(dev), x, y);
- }
- break;
- default:
- break;
- }
- master = CopyGetMasterEvent(dev, event, &mevent);
-
- if (master)
- master->u.lastSlave = dev;
-
- /* If someone's registered a custom event handler, let them
- * steal it. */
- if (handler)
- {
- int screenNum = dev && DequeueScreen(dev) ? DequeueScreen(dev)->myNum : (screen ? screen->myNum : 0);
- handler(screenNum, event, dev);
- /* Check for the SD's master in case the device got detached
- * during event processing */
- if (master && dev->u.master)
- handler(screenNum, &mevent, master);
- } else
- {
- /* process slave first, then master */
- dev->public.processInputProc(event, dev);
-
- /* Check for the SD's master in case the device got detached
- * during event processing */
- if (master && dev->u.master)
- master->public.processInputProc(&mevent, master);
- }
-}
-
-/* Call this from ProcessInputEvents(). */
-void
-mieqProcessInputEvents(void)
-{
- EventRec *e = NULL;
- int evlen;
- ScreenPtr screen;
- static InternalEvent *event = NULL;
- static size_t event_size = 0;
- DeviceIntPtr dev = NULL,
- master = NULL;
-
-#ifdef XQUARTZ
- pthread_mutex_lock(&miEventQueueMutex);
-#endif
-
- while (miEventQueue.head != miEventQueue.tail) {
- e = &miEventQueue.events[miEventQueue.head];
-
- evlen = e->events->evlen;
- if(evlen > event_size)
- {
- event_size=evlen;
- event = xrealloc(event, evlen);
- if (!event)
- FatalError("[mi] No memory left for event processing.\n");
- }
-
-
- memcpy(event, e->events->event, evlen);
-
-
- dev = e->pDev;
- screen = e->pScreen;
-
- miEventQueue.head = (miEventQueue.head + 1) % QUEUE_SIZE;
-
-#ifdef XQUARTZ
- pthread_mutex_unlock(&miEventQueueMutex);
-#endif
-
- master = (dev && !IsMaster(dev) && dev->u.master) ? dev->u.master : NULL;
-
- if (screenIsSaved == SCREEN_SAVER_ON)
- dixSaveScreens (serverClient, SCREEN_SAVER_OFF, ScreenSaverReset);
-#ifdef DPMSExtension
- else if (DPMSPowerLevel != DPMSModeOn)
- SetScreenSaverTimer();
-
- if (DPMSPowerLevel != DPMSModeOn)
- DPMSSet(serverClient, DPMSModeOn);
-#endif
-
- mieqProcessDeviceEvent(dev, event, screen);
-
- /* Update the sprite now. Next event may be from different device. */
- if (event->any.type == ET_Motion && master)
- miPointerUpdateSprite(dev);
-
-#ifdef XQUARTZ
- pthread_mutex_lock(&miEventQueueMutex);
-#endif
- }
-#ifdef XQUARTZ
- pthread_mutex_unlock(&miEventQueueMutex);
-#endif
-}
-
+/*
+ *
+Copyright 1990, 1998 The Open Group
+
+Permission to use, copy, modify, distribute, and sell this software and its
+documentation for any purpose is hereby granted without fee, provided that
+the above copyright notice appear in all copies and that both that
+copyright notice and this permission notice appear in supporting
+documentation.
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+Except as contained in this notice, the name of The Open Group shall not be
+used in advertising or otherwise to promote the sale, use or other dealings
+in this Software without prior written authorization from The Open Group.
+ *
+ * Author: Keith Packard, MIT X Consortium
+ */
+
+/*
+ * mieq.c
+ *
+ * Machine independent event queue
+ *
+ */
+
+#if HAVE_DIX_CONFIG_H
+#include <dix-config.h>
+#endif
+
+# include <X11/X.h>
+# include <X11/Xmd.h>
+# include <X11/Xproto.h>
+# include "misc.h"
+# include "windowstr.h"
+# include "pixmapstr.h"
+# include "inputstr.h"
+# include "mi.h"
+# include "mipointer.h"
+# include "scrnintstr.h"
+# include <X11/extensions/XI.h>
+# include <X11/extensions/XIproto.h>
+# include <X11/extensions/geproto.h>
+# include "extinit.h"
+# include "exglobals.h"
+# include "eventstr.h"
+
+#ifdef DPMSExtension
+# include "dpmsproc.h"
+# include <X11/extensions/dpmsconst.h>
+#endif
+
+#define QUEUE_SIZE 512
+
+#define EnqueueScreen(dev) dev->spriteInfo->sprite->pEnqueueScreen
+#define DequeueScreen(dev) dev->spriteInfo->sprite->pDequeueScreen
+
+typedef struct _Event {
+ EventListPtr events;
+ ScreenPtr pScreen;
+ DeviceIntPtr pDev; /* device this event _originated_ from */
+} EventRec, *EventPtr;
+
+typedef struct _EventQueue {
+ HWEventQueueType head, tail; /* long for SetInputCheck */
+ CARD32 lastEventTime; /* to avoid time running backwards */
+ int lastMotion; /* device ID if last event motion? */
+ EventRec events[QUEUE_SIZE]; /* static allocation for signals */
+ mieqHandler handlers[128]; /* custom event handler */
+} EventQueueRec, *EventQueuePtr;
+
+static EventQueueRec miEventQueue;
+
+#ifdef XQUARTZ
+#include <pthread.h>
+static pthread_mutex_t miEventQueueMutex = PTHREAD_MUTEX_INITIALIZER;
+
+extern BOOL serverInitComplete;
+extern pthread_mutex_t serverInitCompleteMutex;
+extern pthread_cond_t serverInitCompleteCond;
+
+static inline void wait_for_server_init(void) {
+ /* If the server hasn't finished initializing, wait for it... */
+ if(!serverInitComplete) {
+ pthread_mutex_lock(&serverInitCompleteMutex);
+ while(!serverInitComplete)
+ pthread_cond_wait(&serverInitCompleteCond, &serverInitCompleteMutex);
+ pthread_mutex_unlock(&serverInitCompleteMutex);
+ }
+}
+#endif
+
+Bool
+mieqInit(void)
+{
+ int i;
+
+ miEventQueue.head = miEventQueue.tail = 0;
+ miEventQueue.lastEventTime = GetTimeInMillis ();
+ miEventQueue.lastMotion = FALSE;
+ for (i = 0; i < 128; i++)
+ miEventQueue.handlers[i] = NULL;
+ for (i = 0; i < QUEUE_SIZE; i++)
+ {
+ if (miEventQueue.events[i].events == NULL) {
+ EventListPtr evlist = InitEventList(1);
+ if (!evlist)
+ FatalError("Could not allocate event queue.\n");
+ miEventQueue.events[i].events = evlist;
+ }
+ }
+
+ SetInputCheck(&miEventQueue.head, &miEventQueue.tail);
+ return TRUE;
+}
+
+void
+mieqFini(void)
+{
+ int i;
+ for (i = 0; i < QUEUE_SIZE; i++)
+ {
+ if (miEventQueue.events[i].events != NULL) {
+ FreeEventList(miEventQueue.events[i].events, 1);
+ miEventQueue.events[i].events = NULL;
+ }
+ }
+}
+
+/*
+ * Must be reentrant with ProcessInputEvents. Assumption: mieqEnqueue
+ * will never be interrupted. If this is called from both signal
+ * handlers and regular code, make sure the signal is suspended when
+ * called from regular code.
+ */
+
+void
+mieqEnqueue(DeviceIntPtr pDev, InternalEvent *e)
+{
+ unsigned int oldtail = miEventQueue.tail;
+ EventListPtr evt;
+ int isMotion = 0;
+ int evlen;
+ Time time;
+
+#ifdef XQUARTZ
+ wait_for_server_init();
+ pthread_mutex_lock(&miEventQueueMutex);
+#endif
+
+ CHECKEVENT(e);
+
+ /* avoid merging events from different devices */
+ if (e->any.type == ET_Motion)
+ isMotion = pDev->id;
+
+ if (isMotion && isMotion == miEventQueue.lastMotion &&
+ oldtail != miEventQueue.head) {
+ oldtail = (oldtail - 1) % QUEUE_SIZE;
+ }
+ else {
+ static int stuck = 0;
+ /* Toss events which come in late. Usually this means your server's
+ * stuck in an infinite loop somewhere, but SIGIO is still getting
+ * handled. */
+ if (((oldtail + 1) % QUEUE_SIZE) == miEventQueue.head) {
+ if (!stuck) {
+ ErrorF("[mi] EQ overflowing. The server is probably stuck "
+ "in an infinite loop.\n");
+ xorg_backtrace();
+ stuck = 1;
+ }
+#ifdef XQUARTZ
+ pthread_mutex_unlock(&miEventQueueMutex);
+#endif
+ return;
+ }
+ stuck = 0;
+ }
+
+ evlen = e->any.length;
+ evt = miEventQueue.events[oldtail].events;
+ if (evt->evlen < evlen)
+ {
+ evt->evlen = evlen;
+ evt->event = xrealloc(evt->event, evt->evlen);
+ if (!evt->event)
+ {
+ ErrorF("[mi] Running out of memory. Tossing event.\n");
+#ifdef XQUARTZ
+ pthread_mutex_unlock(&miEventQueueMutex);
+#endif
+ return;
+ }
+ }
+
+ memcpy(evt->event, e, evlen);
+
+ time = e->any.time;
+ /* Make sure that event times don't go backwards - this
+ * is "unnecessary", but very useful. */
+ if (time < miEventQueue.lastEventTime &&
+ miEventQueue.lastEventTime - time < 10000)
+ e->any.time = miEventQueue.lastEventTime;
+
+ miEventQueue.lastEventTime = ((InternalEvent*)evt->event)->any.time;
+ miEventQueue.events[oldtail].pScreen = pDev ? EnqueueScreen(pDev) : NULL;
+ miEventQueue.events[oldtail].pDev = pDev;
+
+ miEventQueue.lastMotion = isMotion;
+ miEventQueue.tail = (oldtail + 1) % QUEUE_SIZE;
+#ifdef XQUARTZ
+ pthread_mutex_unlock(&miEventQueueMutex);
+#endif
+}
+
+void
+mieqSwitchScreen(DeviceIntPtr pDev, ScreenPtr pScreen, Bool fromDIX)
+{
+#ifdef XQUARTZ
+ pthread_mutex_lock(&miEventQueueMutex);
+#endif
+ EnqueueScreen(pDev) = pScreen;
+ if (fromDIX)
+ DequeueScreen(pDev) = pScreen;
+#ifdef XQUARTZ
+ pthread_mutex_unlock(&miEventQueueMutex);
+#endif
+}
+
+void
+mieqSetHandler(int event, mieqHandler handler)
+{
+#ifdef XQUARTZ
+ pthread_mutex_lock(&miEventQueueMutex);
+#endif
+ if (handler && miEventQueue.handlers[event])
+ ErrorF("[mi] mieq: warning: overriding existing handler %p with %p for "
+ "event %d\n", miEventQueue.handlers[event], handler, event);
+
+ miEventQueue.handlers[event] = handler;
+#ifdef XQUARTZ
+ pthread_mutex_unlock(&miEventQueueMutex);
+#endif
+}
+
+/**
+ * Change the device id of the given event to the given device's id.
+ */
+static void
+ChangeDeviceID(DeviceIntPtr dev, InternalEvent* event)
+{
+ switch(event->any.type)
+ {
+ case ET_Motion:
+ case ET_KeyPress:
+ case ET_KeyRelease:
+ case ET_ButtonPress:
+ case ET_ButtonRelease:
+ case ET_ProximityIn:
+ case ET_ProximityOut:
+ case ET_Hierarchy:
+ case ET_DeviceChanged:
+ event->device_event.deviceid = dev->id;
+ break;
+#if XFreeXDGA
+ case ET_DGAEvent:
+ break;
+#endif
+ case ET_RawKeyPress:
+ case ET_RawKeyRelease:
+ case ET_RawButtonPress:
+ case ET_RawButtonRelease:
+ case ET_RawMotion:
+ event->raw_event.deviceid = dev->id;
+ break;
+ default:
+ ErrorF("[mi] Unknown event type (%d), cannot change id.\n",
+ event->any.type);
+ }
+}
+
+static void
+FixUpEventForMaster(DeviceIntPtr mdev, DeviceIntPtr sdev,
+ InternalEvent* original, InternalEvent *master)
+{
+ CHECKEVENT(original);
+ CHECKEVENT(master);
+ /* Ensure chained button mappings, i.e. that the detail field is the
+ * value of the mapped button on the SD, not the physical button */
+ if (original->any.type == ET_ButtonPress ||
+ original->any.type == ET_ButtonRelease)
+ {
+ int btn = original->device_event.detail.button;
+ if (!sdev->button)
+ return; /* Should never happen */
+
+ master->device_event.detail.button = sdev->button->map[btn];
+ }
+}
+
+/**
+ * Copy the given event into master.
+ * @param sdev The slave device the original event comes from
+ * @param original The event as it came from the EQ
+ * @param copy The event after being copied
+ * @return The master device or NULL if the device is a floating slave.
+ */
+DeviceIntPtr
+CopyGetMasterEvent(DeviceIntPtr sdev,
+ InternalEvent* original, InternalEvent *copy)
+{
+ DeviceIntPtr mdev;
+ int len = original->any.length;
+
+ CHECKEVENT(original);
+
+ /* ET_XQuartz has sdev == NULL */
+ if (!sdev || !sdev->u.master)
+ return NULL;
+
+ switch(original->any.type)
+ {
+ case ET_KeyPress:
+ case ET_KeyRelease:
+ mdev = GetMaster(sdev, MASTER_KEYBOARD);
+ break;
+ case ET_ButtonPress:
+ case ET_ButtonRelease:
+ case ET_Motion:
+ case ET_ProximityIn:
+ case ET_ProximityOut:
+ mdev = GetMaster(sdev, MASTER_POINTER);
+ break;
+ default:
+ mdev = sdev->u.master;
+ break;
+ }
+
+ memcpy(copy, original, len);
+ ChangeDeviceID(mdev, copy);
+ FixUpEventForMaster(mdev, sdev, original, copy);
+
+ return mdev;
+}
+
+
+/**
+ * Post the given @event through the device hierarchy, as appropriate.
+ * Use this function if an event must be posted for a given device during the
+ * usual event processing cycle.
+ */
+void
+mieqProcessDeviceEvent(DeviceIntPtr dev,
+ InternalEvent *event,
+ ScreenPtr screen)
+{
+ mieqHandler handler;
+ int x = 0, y = 0;
+ DeviceIntPtr master;
+ InternalEvent mevent; /* master event */
+
+ CHECKEVENT(event);
+
+ /* Custom event handler */
+ handler = miEventQueue.handlers[event->any.type];
+
+ switch (event->any.type) {
+ /* Catch events that include valuator information and check if they
+ * are changing the screen */
+ case ET_Motion:
+ case ET_KeyPress:
+ case ET_KeyRelease:
+ case ET_ButtonPress:
+ case ET_ButtonRelease:
+ if (dev && screen && screen != DequeueScreen(dev) && !handler) {
+ DequeueScreen(dev) = screen;
+ x = event->device_event.root_x;
+ y = event->device_event.root_y;
+ NewCurrentScreen (dev, DequeueScreen(dev), x, y);
+ }
+ break;
+ default:
+ break;
+ }
+ master = CopyGetMasterEvent(dev, event, &mevent);
+
+ if (master)
+ master->u.lastSlave = dev;
+
+ /* If someone's registered a custom event handler, let them
+ * steal it. */
+ if (handler)
+ {
+ int screenNum = dev && DequeueScreen(dev) ? DequeueScreen(dev)->myNum : (screen ? screen->myNum : 0);
+ handler(screenNum, event, dev);
+ /* Check for the SD's master in case the device got detached
+ * during event processing */
+ if (master && dev->u.master)
+ handler(screenNum, &mevent, master);
+ } else
+ {
+ /* process slave first, then master */
+ dev->public.processInputProc(event, dev);
+
+ /* Check for the SD's master in case the device got detached
+ * during event processing */
+ if (master && dev->u.master)
+ master->public.processInputProc(&mevent, master);
+ }
+}
+
+/* Call this from ProcessInputEvents(). */
+void
+mieqProcessInputEvents(void)
+{
+ EventRec *e = NULL;
+ int evlen;
+ ScreenPtr screen;
+ static InternalEvent *event = NULL;
+ static size_t event_size = 0;
+ DeviceIntPtr dev = NULL,
+ master = NULL;
+
+#ifdef XQUARTZ
+ pthread_mutex_lock(&miEventQueueMutex);
+#endif
+
+ while (miEventQueue.head != miEventQueue.tail) {
+ e = &miEventQueue.events[miEventQueue.head];
+
+ evlen = e->events->evlen;
+ if(evlen > event_size)
+ {
+ event = xrealloc(event, evlen);
+ event_size=evlen;
+
+ if (!event)
+ FatalError("[mi] No memory left for event processing.\n");
+ }
+
+
+ memcpy(event, e->events->event, evlen);
+
+
+ dev = e->pDev;
+ screen = e->pScreen;
+
+ miEventQueue.head = (miEventQueue.head + 1) % QUEUE_SIZE;
+
+#ifdef XQUARTZ
+ pthread_mutex_unlock(&miEventQueueMutex);
+#endif
+
+ master = (dev && !IsMaster(dev) && dev->u.master) ? dev->u.master : NULL;
+
+ if (screenIsSaved == SCREEN_SAVER_ON)
+ dixSaveScreens (serverClient, SCREEN_SAVER_OFF, ScreenSaverReset);
+#ifdef DPMSExtension
+ else if (DPMSPowerLevel != DPMSModeOn)
+ SetScreenSaverTimer();
+
+ if (DPMSPowerLevel != DPMSModeOn)
+ DPMSSet(serverClient, DPMSModeOn);
+#endif
+
+ mieqProcessDeviceEvent(dev, event, screen);
+
+ /* Update the sprite now. Next event may be from different device. */
+ if (event->any.type == ET_Motion && master)
+ miPointerUpdateSprite(dev);
+
+#ifdef XQUARTZ
+ pthread_mutex_lock(&miEventQueueMutex);
+#endif
+ }
+#ifdef XQUARTZ
+ pthread_mutex_unlock(&miEventQueueMutex);
+#endif
+}
+