diff options
Diffstat (limited to 'xorg-server/hw/dmx/input/dmxeq.c')
| -rw-r--r-- | xorg-server/hw/dmx/input/dmxeq.c | 307 |
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; + } + } + } +} |