diff options
Diffstat (limited to 'xorg-server/mi/mieq.c')
| -rw-r--r-- | xorg-server/mi/mieq.c | 977 |
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
+}
+
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