aboutsummaryrefslogtreecommitdiff
path: root/xorg-server/hw/dmx/input/dmxeq.c
diff options
context:
space:
mode:
Diffstat (limited to 'xorg-server/hw/dmx/input/dmxeq.c')
-rw-r--r--xorg-server/hw/dmx/input/dmxeq.c307
1 files changed, 307 insertions, 0 deletions
diff --git a/xorg-server/hw/dmx/input/dmxeq.c b/xorg-server/hw/dmx/input/dmxeq.c
new file mode 100644
index 000000000..dff0b4423
--- /dev/null
+++ b/xorg-server/hw/dmx/input/dmxeq.c
@@ -0,0 +1,307 @@
+/*
+ *
+ * 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
+ */
+
+/*
+ * dmxeq.c is derived from mi/mieq.c so that XInput events can be handled
+ *
+ * Modified by: Rickard E. (Rik) Faith <faith@redhat.com>
+ *
+ * Copyright 2002-2003 Red Hat Inc., Durham, North Carolina.
+ *
+ * All Rights Reserved.
+ *
+ * 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 on 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
+ * NON-INFRINGEMENT. IN NO EVENT SHALL RED HAT AND/OR THEIR SUPPLIERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+/** \file
+ * This file provides an event queue that knows about XInput events.
+ * All of the code is based on mi/mieq.c and was modified as little as
+ * possible to provide XInput event support (the copyright and some of
+ * the comments are from The Open Group, Keith Packard, MIT X
+ * Consortium). (Another example of similar code is provided in
+ * hw/xfree86/common/xf86Xinput.c.) */
+
+#ifdef HAVE_DMX_CONFIG_H
+#include <dmx-config.h>
+#endif
+
+#define DMX_EQ_DEBUG 0
+
+#include "dmx.h"
+#include "dmxeq.h"
+#include "dmxinput.h"
+#include "dmxlog.h"
+#include "dmxdpms.h"
+
+#include "inputstr.h"
+#include "scrnintstr.h" /* For screenInfo */
+
+#ifdef XINPUT
+#include <X11/extensions/XIproto.h>
+#define EXTENSION_PROC_ARGS void *
+#endif
+
+#if DMX_EQ_DEBUG
+#define DMXDBG2(f,a,b) dmxLog(dmxDebug,f,a,b)
+#define DMXDBG5(f,a,b,c,d,e) dmxLog(dmxDebug,f,a,b,c,d,e)
+#else
+#define DMXDBG2(f,a,b)
+#define DMXDBG5(f,a,b,c,d,e)
+#endif
+
+/** The size of our queue. (The queue provided by mi/mieq.c has a size
+ * of 256.) */
+#define QUEUE_SIZE 256
+
+/** Information about the event. */
+typedef struct _Event {
+ xEvent event; /**< Event. */
+ ScreenPtr pScreen; /**< Screen on which event occurred. */
+#ifdef XINPUT
+ deviceValuator valuator; /**< XInput device valuator information. */
+#endif
+} EventRec, *EventPtr;
+
+/** Event queue. */
+typedef struct _EventQueue {
+ HWEventQueueType head; /**< Queue head; must be long for SetInputCheck. */
+ HWEventQueueType tail; /**< Queue tail; must be long for SetInputCheck. */
+ CARD32 lastEventTime; /**< To avoid time running backwards. */
+ Bool lastMotion; /**< True if last event was motion. */
+ EventRec events[QUEUE_SIZE]; /**< Static allocation for signals. */
+ DevicePtr pKbd, pPtr; /**< Device pointers (to get funcs) */
+ ScreenPtr pEnqueueScreen;/**< Screen events are delivered to. */
+ ScreenPtr pDequeueScreen;/**< Screen events are dispatched to. */
+} EventQueueRec, *EventQueuePtr;
+
+static EventQueueRec dmxEventQueue;
+static Bool dmxeqInitializedFlag = FALSE;
+
+Bool dmxeqInitialized(void)
+{
+ return dmxeqInitializedFlag;
+}
+
+Bool dmxeqInit(DevicePtr pKbd, DevicePtr pPtr)
+{
+ static unsigned long dmxGeneration = 0;
+
+ if (dmxGeneration == serverGeneration && dmxeqInitializedFlag)
+ return FALSE;
+ dmxGeneration = serverGeneration;
+ dmxeqInitializedFlag = TRUE;
+ dmxEventQueue.head = 0;
+ dmxEventQueue.tail = 0;
+ dmxEventQueue.lastEventTime = GetTimeInMillis();
+ dmxEventQueue.pKbd = pKbd;
+ dmxEventQueue.pPtr = pPtr;
+ dmxEventQueue.lastMotion = FALSE;
+ dmxEventQueue.pEnqueueScreen = screenInfo.screens[0];
+ dmxEventQueue.pDequeueScreen = dmxEventQueue.pEnqueueScreen;
+ SetInputCheck(&dmxEventQueue.head, &dmxEventQueue.tail);
+ return TRUE;
+}
+
+/**
+ * This function adds an event to the end of the queue. If the event is
+ * an XInput event, then the next event (the valuator event) is also
+ * stored in the queue. If the new event has a time before the time of
+ * the last event currently on the queue, then the time is updated for
+ * the new event.
+ *
+ * Must be reentrant with ProcessInputEvents. Assumption: dmxeqEnqueue
+ * 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 dmxeqEnqueue(xEvent *e)
+{
+ HWEventQueueType oldtail, newtail;
+ Bool isMotion;
+
+ oldtail = dmxEventQueue.tail;
+ isMotion = e->u.u.type == MotionNotify;
+ if (isMotion
+ && dmxEventQueue.lastMotion
+ && oldtail != dmxEventQueue.head) {
+ if (oldtail == 0) oldtail = QUEUE_SIZE;
+ oldtail = oldtail - 1;
+ } else {
+ newtail = oldtail + 1;
+ if (newtail == QUEUE_SIZE) newtail = 0;
+ /* Toss events which come in late */
+ if (newtail == dmxEventQueue.head) return;
+ dmxEventQueue.tail = newtail;
+ }
+ DMXDBG2("dmxeqEnqueue %d %d\n", dmxEventQueue.head, dmxEventQueue.tail);
+ dmxEventQueue.lastMotion = isMotion;
+ dmxEventQueue.events[oldtail].pScreen = dmxEventQueue.pEnqueueScreen;
+
+ /* Store the event in the queue */
+ dmxEventQueue.events[oldtail].event = *e;
+#ifdef XINPUT
+ {
+ /* If this is an XInput event, store the
+ * valuator event, too */
+ deviceKeyButtonPointer *ev = (deviceKeyButtonPointer *)e;
+ if (e->u.u.type >= LASTEvent && (ev->deviceid & MORE_EVENTS))
+ dmxEventQueue.events[oldtail].valuator = *(deviceValuator *)(ev+1);
+ }
+#endif
+
+ /* Make sure that event times don't go
+ * backwards - this is "unnecessary",
+ * but very useful */
+ if (e->u.keyButtonPointer.time < dmxEventQueue.lastEventTime
+ && dmxEventQueue.lastEventTime - e->u.keyButtonPointer.time < 10000) {
+ dmxEventQueue.events[oldtail].event.u.keyButtonPointer.time =
+ dmxEventQueue.lastEventTime;
+ }
+}
+
+/** Make \a pScreen the new screen for enqueueing events. If \a fromDIX
+ * is TRUE, also make \a pScreen the new screen for dequeuing events. */
+void dmxeqSwitchScreen(ScreenPtr pScreen, Bool fromDIX)
+{
+ dmxEventQueue.pEnqueueScreen = pScreen;
+ if (fromDIX) dmxEventQueue.pDequeueScreen = pScreen;
+}
+
+#ifdef XINPUT
+static void dmxeqProcessXInputEvent(xEvent *xe, EventRec *e)
+{
+ deviceKeyButtonPointer *ev = (deviceKeyButtonPointer *)xe;
+ int id = ev->deviceid & DEVICE_BITS;
+ DeviceIntPtr pDevice;
+
+ dixLookupDevice(&pDevice, id, serverClient, DixUnknownAccess);
+ if (!pDevice) {
+ dmxLog(dmxError, "dmxeqProcessInputEvents: id %d not found\n", id);
+ return;
+ }
+
+ if (!pDevice->public.processInputProc) {
+ dmxLog(dmxError,
+ "dmxeqProcessInputEvents: no processInputProc for"
+ " device id %d (%s)\n", id, pDevice->name);
+ return;
+ }
+
+ if (ev->deviceid & MORE_EVENTS) {
+ xe[1] = *(xEvent *)(&e->valuator);
+ pDevice->public.processInputProc(xe, pDevice, 2);
+ } else {
+ pDevice->public.processInputProc(xe, pDevice, 1);
+ }
+}
+#endif
+
+/**
+ * This function is called from #ProcessInputEvents() to remove events
+ * from the queue and process them.
+ */
+void dmxeqProcessInputEvents(void)
+{
+ EventRec *e;
+ int x, y;
+ xEvent xe[2];
+
+ while (dmxEventQueue.head != dmxEventQueue.tail) {
+ dmxDPMSWakeup(); /* Handles screen saver and DPMS */
+ e = &dmxEventQueue.events[dmxEventQueue.head];
+ DMXDBG5("dmxeqProcessInputEvents: type=%d screen=%p,%p root=%d,%d\n",
+ e->event.u.u.type,
+ e->pScreen, dmxEventQueue.pDequeueScreen,
+ e->event.u.keyButtonPointer.rootX,
+ e->event.u.keyButtonPointer.rootY);
+ /*
+ * Assumption - screen switching can only occur on core motion events
+ */
+ if (e->event.u.u.type == MotionNotify
+ && e->pScreen != dmxEventQueue.pDequeueScreen) {
+ dmxEventQueue.pDequeueScreen = e->pScreen;
+ x = e->event.u.keyButtonPointer.rootX;
+ y = e->event.u.keyButtonPointer.rootY;
+ if (dmxEventQueue.head == QUEUE_SIZE - 1) dmxEventQueue.head = 0;
+ else ++dmxEventQueue.head;
+ NewCurrentScreen(dmxEventQueue.pDequeueScreen, x, y);
+ } else {
+ xe[0] = e->event;
+ if (dmxEventQueue.head == QUEUE_SIZE - 1) dmxEventQueue.head = 0;
+ else ++dmxEventQueue.head;
+ switch (xe[0].u.u.type) {
+ case KeyPress:
+ case KeyRelease:
+ if (!dmxEventQueue.pKbd) {
+ dmxLog(dmxError, "dmxeqProcessInputEvents: No keyboard\n");
+ return;
+ }
+ dmxEventQueue.pKbd
+ ->processInputProc(xe,
+ (DeviceIntPtr)dmxEventQueue.pKbd, 1);
+ break;
+ default:
+#ifdef XINPUT
+ dmxeqProcessXInputEvent(xe, e);
+ break;
+#endif
+ /* ifndef XINPUT, fall through */
+ case ButtonPress:
+ case ButtonRelease:
+ case MotionNotify:
+ if (!dmxEventQueue.pPtr) {
+ dmxLog(dmxError, "dmxeqProcessInputEvents: No mouse\n");
+ return;
+ }
+ dmxEventQueue.pPtr
+ ->processInputProc(xe,
+ (DeviceIntPtr)dmxEventQueue.pPtr, 1);
+ break;
+ }
+ }
+ }
+}