xserver-multidpi/mi/mieq.c
Peter Hutterer 9db851c22d dix: moved sprite from static to be pointer of type SpritePtr
added SpriteRecs for MPX devices
	changed sprite dependency and added MPX functionality to parts
	of events.c (ConfineToShape, PostNewCursor, XineramaCheckMotion,
	CheckMotion, XineramaChangeToCursor, ChangeToCursor, CheckPhysLimits,
	PointerConfinedToScreen)
	added DeviceIntRec param to GetSpritePosition(). This required some
	minor changes in ddx, xtest, xkb and xfixes.

mi:	changed miPointer to pointer instead of static struct.
2006-11-21 18:15:04 +10:30

262 lines
8.5 KiB
C

/*
*
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
*/
#ifdef MPX
/*
* MPX additions:
* Copyright © 2006 Peter Hutterer
* License see above.
* Author: Peter Hutterer <peter@cs.unisa.edu.au>
*
*/
#endif
/*
* mieq.c
*
* Machine independent event queue
*
*/
#if HAVE_DIX_CONFIG_H
#include <dix-config.h>
#endif
# define NEED_EVENTS
# 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 "extinit.h"
# include "exglobals.h"
#define QUEUE_SIZE 256
typedef struct _Event {
xEvent event[7];
int nevents;
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 */
ScreenPtr pEnqueueScreen; /* screen events are being delivered to */
ScreenPtr pDequeueScreen; /* screen events are being dispatched to */
} EventQueueRec, *EventQueuePtr;
static EventQueueRec miEventQueue;
Bool
mieqInit()
{
miEventQueue.head = miEventQueue.tail = 0;
miEventQueue.lastEventTime = GetTimeInMillis ();
miEventQueue.lastMotion = FALSE;
miEventQueue.pEnqueueScreen = screenInfo.screens[0];
miEventQueue.pDequeueScreen = miEventQueue.pEnqueueScreen;
SetInputCheck(&miEventQueue.head, &miEventQueue.tail);
return TRUE;
}
/*
* 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, xEvent *e)
{
HWEventQueueType oldtail = miEventQueue.tail, newtail;
int isMotion = 0;
deviceValuator *v = (deviceValuator *) e;
EventPtr laste = &miEventQueue.events[oldtail - 1];
deviceKeyButtonPointer *lastkbp = (deviceKeyButtonPointer *)
&laste->event[0];
#ifdef MPX
/* avoid merging events from different devices */
if (e->u.u.type == MotionNotify && pDev->isMPDev)
isMotion = pDev->id;
else
#endif
if (e->u.u.type == MotionNotify)
isMotion = inputInfo.pointer->id;
else if (e->u.u.type == DeviceMotionNotify)
isMotion = pDev->id;
/* We silently steal valuator events: just tack them on to the last
* motion event they need to be attached to. Sigh. */
if (e->u.u.type == DeviceValuator) {
if (laste->nevents > 6) {
ErrorF("mieqEnqueue: more than six valuator events; dropping.\n");
return;
}
if (oldtail == miEventQueue.head ||
!(lastkbp->type == DeviceMotionNotify ||
lastkbp->type == DeviceButtonPress ||
lastkbp->type == DeviceButtonRelease) ||
((lastkbp->deviceid & DEVICE_BITS) !=
(v->deviceid & DEVICE_BITS))) {
ErrorF("mieqEnequeue: out-of-order valuator event; dropping.\n");
return;
}
memcpy(&(laste->event[laste->nevents++]), e, sizeof(xEvent));
return;
}
if (isMotion && isMotion == miEventQueue.lastMotion &&
oldtail != miEventQueue.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. Usually this means your server's
* stuck in an infinite loop somewhere, but SIGIO is still getting
* handled. */
if (newtail == miEventQueue.head) {
ErrorF("tossed event which came in late\n");
return;
}
miEventQueue.tail = newtail;
}
memcpy(&(miEventQueue.events[oldtail].event[0]), e, sizeof(xEvent));
miEventQueue.events[oldtail].nevents = 1;
/* Make sure that event times don't go backwards - this
* is "unnecessary", but very useful. */
if (e->u.keyButtonPointer.time < miEventQueue.lastEventTime &&
miEventQueue.lastEventTime - e->u.keyButtonPointer.time < 10000)
miEventQueue.events[oldtail].event[0].u.keyButtonPointer.time =
miEventQueue.lastEventTime;
miEventQueue.lastEventTime =
miEventQueue.events[oldtail].event[0].u.keyButtonPointer.time;
miEventQueue.events[oldtail].pScreen = miEventQueue.pEnqueueScreen;
miEventQueue.events[oldtail].pDev = pDev;
miEventQueue.lastMotion = isMotion;
}
void
mieqSwitchScreen(ScreenPtr pScreen, Bool fromDIX)
{
miEventQueue.pEnqueueScreen = pScreen;
if (fromDIX)
miEventQueue.pDequeueScreen = pScreen;
}
/* Call this from ProcessInputEvents(). */
void
mieqProcessInputEvents()
{
EventRec *e = NULL;
int x = 0, y = 0;
DeviceIntPtr dev = NULL;
while (miEventQueue.head != miEventQueue.tail) {
if (screenIsSaved == SCREEN_SAVER_ON)
SaveScreens (SCREEN_SAVER_OFF, ScreenSaverReset);
e = &miEventQueue.events[miEventQueue.head];
/* Assumption - screen switching can only occur on motion events. */
if (e->pScreen != miEventQueue.pDequeueScreen) {
miEventQueue.pDequeueScreen = e->pScreen;
x = e->event[0].u.keyButtonPointer.rootX;
y = e->event[0].u.keyButtonPointer.rootY;
if (miEventQueue.head == QUEUE_SIZE - 1)
miEventQueue.head = 0;
else
++miEventQueue.head;
NewCurrentScreen (miEventQueue.pDequeueScreen, x, y);
}
else {
if (miEventQueue.head == QUEUE_SIZE - 1)
miEventQueue.head = 0;
else
++miEventQueue.head;
/* If this is a core event, make sure our keymap, et al, is
* changed to suit. */
if (e->event[0].u.u.type == KeyPress ||
e->event[0].u.u.type == KeyRelease) {
SwitchCoreKeyboard(e->pDev);
dev = inputInfo.keyboard;
}
else if (e->event[0].u.u.type == MotionNotify ||
e->event[0].u.u.type == ButtonPress ||
e->event[0].u.u.type == ButtonRelease) {
#ifdef MPX
if (!e->pDev->isMPDev)
#endif
SwitchCorePointer(e->pDev);
dev = inputInfo.pointer;
}
else {
dev = e->pDev;
}
#ifdef MPX
/* MPX devices send both core and Xi events.
* Use dev to get the correct processing function but supply
* e->pDev to pass the correct device
*/
if (e->pDev->isMPDev)
dev->public.processInputProc(e->event, e->pDev, e->nevents);
else
#endif
dev->public.processInputProc(e->event, dev, e->nevents);
}
#ifdef MPX
/* Update the sprite now. Next event may be from different device. */
if (e->event[0].u.u.type == MotionNotify &&
(e->pDev->isMPDev || e->pDev->coreEvents))
{
miPointerUpdateSprite(e->pDev);
}
#endif
}
}