events.c

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		(y >= pWin->drawable.y - wBorderWidth (pWin)) &&
		(y < pWin->drawable.y + (int)pWin->drawable.height +
		    wBorderWidth (pWin))
#ifdef SHAPE
		/* When a window is shaped, a further check
		 * is made to see if the point is inside
		 * borderSize
		 */
		&& (!wBoundingShape(pWin) ||
		    POINT_IN_REGION(pWin->drawable.pScreen, 
			    &pWin->borderSize, x, y, &box))
#endif
		)
	{
	    if (spriteTraceGood >= spriteTraceSize)
	    {
		spriteTraceSize += 10;
		Must_have_memory = TRUE; /* XXX */
		spriteTrace = (WindowPtr *)xrealloc(
		    spriteTrace, spriteTraceSize*sizeof(WindowPtr));
		Must_have_memory = FALSE; /* XXX */
	    }
	    spriteTrace[spriteTraceGood++] = pWin;
	    pWin = pWin->firstChild;
	}
	else
	    pWin = pWin->nextSib;
    }
    return spriteTrace[spriteTraceGood-1];
}

static Bool
#if NeedFunctionPrototypes
CheckMotion(xEvent *xE)
#else
CheckMotion(xE)
    xEvent *xE;
#endif
{
    WindowPtr prevSpriteWin = sprite.win;

    if (xE && !syncEvents.playingEvents)
    {
	if (sprite.hot.pScreen != sprite.hotPhys.pScreen)
	{
	    sprite.hot.pScreen = sprite.hotPhys.pScreen;
	    ROOT = WindowTable[sprite.hot.pScreen->myNum];
	}
	sprite.hot.x = xE->u.keyButtonPointer.rootX;
	sprite.hot.y = xE->u.keyButtonPointer.rootY;
	if (sprite.hot.x < sprite.physLimits.x1)
	    sprite.hot.x = sprite.physLimits.x1;
	else if (sprite.hot.x >= sprite.physLimits.x2)
	    sprite.hot.x = sprite.physLimits.x2 - 1;
	if (sprite.hot.y < sprite.physLimits.y1)
	    sprite.hot.y = sprite.physLimits.y1;
	else if (sprite.hot.y >= sprite.physLimits.y2)
	    sprite.hot.y = sprite.physLimits.y2 - 1;
#ifdef SHAPE
	if (sprite.hotShape)
	    ConfineToShape(sprite.hotShape, &sprite.hot.x, &sprite.hot.y);
#endif
	sprite.hotPhys = sprite.hot;
	if ((sprite.hotPhys.x != xE->u.keyButtonPointer.rootX) ||
	    (sprite.hotPhys.y != xE->u.keyButtonPointer.rootY))
	    (*sprite.hotPhys.pScreen->SetCursorPosition)(
		sprite.hotPhys.pScreen,
		sprite.hotPhys.x, sprite.hotPhys.y, FALSE);
	xE->u.keyButtonPointer.rootX = sprite.hot.x;
	xE->u.keyButtonPointer.rootY = sprite.hot.y;
    }

    sprite.win = XYToWindow(sprite.hot.x, sprite.hot.y);
#ifdef notyet
    if (!(sprite.win->deliverableEvents &
	  Motion_Filter(inputInfo.pointer->button))
	!syncEvents.playingEvents)
    {
	/* XXX Do PointerNonInterestBox here */
    }
#endif
    if (sprite.win != prevSpriteWin)
    {
	if (prevSpriteWin != NullWindow) {
	    if (!xE)
		UpdateCurrentTimeIf();
	    DoEnterLeaveEvents(prevSpriteWin, sprite.win, NotifyNormal);
	}
	PostNewCursor();
        return FALSE;
    }
    return TRUE;
}

void
WindowsRestructured()
{
    (void) CheckMotion((xEvent *)NULL);
}

void
DefineInitialRootWindow(win)
    register WindowPtr win;
{
    register ScreenPtr pScreen = win->drawable.pScreen;

    sprite.hotPhys.pScreen = pScreen;
    sprite.hotPhys.x = pScreen->width / 2;
    sprite.hotPhys.y = pScreen->height / 2;
    sprite.hot = sprite.hotPhys;
    sprite.hotLimits.x2 = pScreen->width;
    sprite.hotLimits.y2 = pScreen->height;
    sprite.win = win;
    sprite.current = wCursor (win);
    spriteTraceGood = 1;
    ROOT = win;
    (*pScreen->CursorLimits) (
	pScreen, sprite.current, &sprite.hotLimits, &sprite.physLimits);
    sprite.confined = FALSE;
    (*pScreen->ConstrainCursor) (pScreen, &sprite.physLimits);
    (*pScreen->SetCursorPosition) (pScreen, sprite.hot.x, sprite.hot.y, FALSE);
    (*pScreen->DisplayCursor) (pScreen, sprite.current);
}

/*
 * This does not take any shortcuts, and even ignores its argument, since
 * it does not happen very often, and one has to walk up the tree since
 * this might be a newly instantiated cursor for an intermediate window
 * between the one the pointer is in and the one that the last cursor was
 * instantiated from.
 */
/*ARGSUSED*/
void
WindowHasNewCursor(pWin)
    WindowPtr pWin;
{
    PostNewCursor();
}

void
NewCurrentScreen(newScreen, x, y)
    ScreenPtr newScreen;
    int x,y;
{
    sprite.hotPhys.x = x;
    sprite.hotPhys.y = y;
    if (newScreen != sprite.hotPhys.pScreen)
	ConfineCursorToWindow(WindowTable[newScreen->myNum], TRUE, FALSE);
}

int
ProcWarpPointer(client)
    ClientPtr client;
{
    WindowPtr	dest = NULL;
    int		x, y;
    ScreenPtr	newScreen;

    REQUEST(xWarpPointerReq);

    REQUEST_SIZE_MATCH(xWarpPointerReq);
    if (stuff->dstWid != None)
    {
	dest = SecurityLookupWindow(stuff->dstWid, client, SecurityReadAccess);
	if (!dest)
	    return BadWindow;
    }
    x = sprite.hotPhys.x;
    y = sprite.hotPhys.y;
    if (stuff->srcWid != None)
    {
	int     winX, winY;
        WindowPtr source = SecurityLookupWindow(stuff->srcWid, client,
						SecurityReadAccess);
	if (!source)
	    return BadWindow;
	winX = source->drawable.x;
	winY = source->drawable.y;
	if (source->drawable.pScreen != sprite.hotPhys.pScreen ||
	    x < winX + stuff->srcX ||
	    y < winY + stuff->srcY ||
	    (stuff->srcWidth != 0 &&
	     winX + stuff->srcX + (int)stuff->srcWidth < x) ||
	    (stuff->srcHeight != 0 &&
	     winY + stuff->srcY + (int)stuff->srcHeight < y) ||
	    !PointInWindowIsVisible(source, x, y))
	    return Success;
    }
    if (dest)
    {
	x = dest->drawable.x;
	y = dest->drawable.y;
	newScreen = dest->drawable.pScreen;
    }
    else
	newScreen = sprite.hotPhys.pScreen;
    x += stuff->dstX;
    y += stuff->dstY;
    if (x < 0)
	x = 0;
    else if (x >= newScreen->width)
	x = newScreen->width - 1;
    if (y < 0)
	y = 0;
    else if (y >= newScreen->height)
	y = newScreen->height - 1;

    if (newScreen == sprite.hotPhys.pScreen)
    {
	if (x < sprite.physLimits.x1)
	    x = sprite.physLimits.x1;
	else if (x >= sprite.physLimits.x2)
	    x = sprite.physLimits.x2 - 1;
	if (y < sprite.physLimits.y1)
	    y = sprite.physLimits.y1;
	else if (y >= sprite.physLimits.y2)
	    y = sprite.physLimits.y2 - 1;
#ifdef SHAPE
	if (sprite.hotShape)
	    ConfineToShape(sprite.hotShape, &x, &y);
#endif
	(*newScreen->SetCursorPosition)(newScreen, x, y, TRUE);
    }
    else if (!PointerConfinedToScreen())
    {
	NewCurrentScreen(newScreen, x, y);
    }
    return Success;
}

/* "CheckPassiveGrabsOnWindow" checks to see if the event passed in causes a
	passive grab set on the window to be activated. */

static Bool
#if NeedFunctionPrototypes
CheckPassiveGrabsOnWindow(
    WindowPtr pWin,
    register DeviceIntPtr device,
    register xEvent *xE,
    int count)
#else
CheckPassiveGrabsOnWindow(pWin, device, xE, count)
    WindowPtr pWin;
    register DeviceIntPtr device;
    register xEvent *xE;
    int count;
#endif
{
    register GrabPtr grab = wPassiveGrabs(pWin);
    GrabRec tempGrab;
    register xEvent *dxE;

    if (!grab)
	return FALSE;
    tempGrab.window = pWin;
    tempGrab.device = device;
    tempGrab.type = xE->u.u.type;
    tempGrab.detail.exact = xE->u.u.detail;
    tempGrab.detail.pMask = NULL;
    tempGrab.modifiersDetail.pMask = NULL;
    for (; grab; grab = grab->next)
    {
#ifdef XKB
	DeviceIntPtr	gdev;
	XkbSrvInfoPtr	xkbi;

	gdev= grab->modifierDevice;
	xkbi= gdev->key->xkbInfo;
#endif
	tempGrab.modifierDevice = grab->modifierDevice;
	if (device == grab->modifierDevice &&
	    (xE->u.u.type == KeyPress
#ifdef XINPUT
	     || xE->u.u.type == DeviceKeyPress
#endif
	     ))
	    tempGrab.modifiersDetail.exact =
#ifdef XKB
		(noXkbExtension?gdev->key->prev_state:xkbi->state.grab_mods);
#else
		grab->modifierDevice->key->prev_state;
#endif
	else
	    tempGrab.modifiersDetail.exact =
#ifdef XKB
		(noXkbExtension ? gdev->key->state : xkbi->state.grab_mods);
#else
		grab->modifierDevice->key->state;
#endif
	if (GrabMatchesSecond(&tempGrab, grab) &&
	    (!grab->confineTo ||
	     (grab->confineTo->realized &&
	      REGION_NOTEMPTY( grab->confineTo->drawable.pScreen, 
		&grab->confineTo->borderSize))))
	{
#ifdef XCSECURITY
	    if (!SecurityCheckDeviceAccess(wClient(pWin), device, FALSE))
		return FALSE;
#endif
#ifdef XKB
	    if (!noXkbExtension) {
		xE->u.keyButtonPointer.state &= 0x1f00;
		xE->u.keyButtonPointer.state |=
				tempGrab.modifiersDetail.exact&(~0x1f00);
	    }
#endif
	    (*device->ActivateGrab)(device, grab, currentTime, TRUE);
 
	    FixUpEventFromWindow(xE, grab->window, None, TRUE);

	    (void) TryClientEvents(rClient(grab), xE, count,
				   filters[xE->u.u.type],
				   filters[xE->u.u.type],  grab);

	    if (device->sync.state == FROZEN_NO_EVENT)
	    {
		if (device->sync.evcount < count)
		{
		    Must_have_memory = TRUE; /* XXX */
		    device->sync.event = (xEvent *)xrealloc(device->sync.event,
							    count*
							    sizeof(xEvent));
		    Must_have_memory = FALSE; /* XXX */
		}
		device->sync.evcount = count;
		for (dxE = device->sync.event; --count >= 0; dxE++, xE++)
		    *dxE = *xE;
	    	device->sync.state = FROZEN_WITH_EVENT;
            }	
	    return TRUE;
	}
    }
    return FALSE;
}

/*
"CheckDeviceGrabs" handles both keyboard and pointer events that may cause
a passive grab to be activated.  If the event is a keyboard event, the
ancestors of the focus window are traced down and tried to see if they have
any passive grabs to be activated.  If the focus window itself is reached and
it's descendants contain they pointer, the ancestors of the window that the
pointer is in are then traced down starting at the focus window, otherwise no
grabs are activated.  If the event is a pointer event, the ancestors of the
window that the pointer is in are traced down starting at the root until
CheckPassiveGrabs causes a passive grab to activate or all the windows are
tried. PRH
*/

Bool
CheckDeviceGrabs(device, xE, checkFirst, count)
    register DeviceIntPtr device;
    register xEvent *xE;
    int checkFirst;
    int count;
{
    register int i;
    register WindowPtr pWin;
    register FocusClassPtr focus = device->focus;

    if ((xE->u.u.type == ButtonPress
#ifdef XINPUT
	 || xE->u.u.type == DeviceButtonPress
#endif
	 ) && device->button->buttonsDown != 1)
	return FALSE;

    i = checkFirst;

    if (focus)
    {
	for (; i < focus->traceGood; i++)
	{
	    pWin = focus->trace[i];
	    if (pWin->optional &&
		CheckPassiveGrabsOnWindow(pWin, device, xE, count))
		return TRUE;
	}
  
	if ((focus->win == NoneWin) ||
	    (i >= spriteTraceGood) ||
	    ((i > checkFirst) && (pWin != spriteTrace[i-1])))
	    return FALSE;
    }
        
    for (; i < spriteTraceGood; i++)
    {
	pWin = spriteTrace[i];
	if (pWin->optional &&
	    CheckPassiveGrabsOnWindow(pWin, device, xE, count))
	    return TRUE;
    }

    return FALSE;
}

void
DeliverFocusedEvent(keybd, xE, window, count)
    xEvent *xE;
    DeviceIntPtr keybd;
    WindowPtr window;
    int count;
{
    WindowPtr focus = keybd->focus->win;
    int mskidx = 0;

    if (focus == FollowKeyboardWin)
	focus = inputInfo.keyboard->focus->win;
    if (!focus)
	return;
    if (focus == PointerRootWin)
    {
	DeliverDeviceEvents(window, xE, NullGrab, NullWindow, keybd, count);
	return;
    }
    if ((focus == window) || IsParent(focus, window))
    {
	if (DeliverDeviceEvents(window, xE, NullGrab, focus, keybd, count))
	    return;
    }
    /* just deliver it to the focus window */
    FixUpEventFromWindow(xE, focus, None, FALSE);
    if (xE->u.u.type & EXTENSION_EVENT_BASE)
	mskidx = keybd->id;
    (void)DeliverEventsToWindow(focus, xE, count, filters[xE->u.u.type],
				NullGrab, mskidx);
}

void
DeliverGrabbedEvent(xE, thisDev, deactivateGrab, count)
    register xEvent *xE;
    register DeviceIntPtr thisDev;
    Bool deactivateGrab;
    int count;
{
    register GrabPtr grab = thisDev->grab;
    int deliveries = 0;
    register DeviceIntPtr dev;
    register xEvent *dxE;

    if (grab->ownerEvents)
    {
	WindowPtr focus;

	if (thisDev->focus)
	{
	    focus = thisDev->focus->win;
	    if (focus == FollowKeyboardWin)
		focus = inputInfo.keyboard->focus->win;
	}
	else
	    focus = PointerRootWin;
	if (focus == PointerRootWin)
	    deliveries = DeliverDeviceEvents(sprite.win, xE, grab, NullWindow,
					     thisDev, count);
	else if (focus && (focus == sprite.win || IsParent(focus, sprite.win)))
	    deliveries = DeliverDeviceEvents(sprite.win, xE, grab, focus,
					     thisDev, count);
	else if (focus)
	    deliveries = DeliverDeviceEvents(focus, xE, grab, focus,
					     thisDev, count);
    }
    if (!deliveries)
    {
	FixUpEventFromWindow(xE, grab->window, None, TRUE);
	deliveries = TryClientEvents(rClient(grab), xE, count,
				     (Mask)grab->eventMask,
				     filters[xE->u.u.type], grab);
	if (deliveries && (xE->u.u.type == MotionNotify
#ifdef XINPUT
			   || xE->u.u.type == DeviceMotionNotify
#endif
			   ))
	    thisDev->valuator->motionHintWindow = grab->window;
    }
    if (deliveries && !deactivateGrab && (xE->u.u.type != MotionNotify
#ifdef XINPUT
					  && xE->u.u.type != DeviceMotionNotify
#endif
					  ))
	switch (thisDev->sync.state)
	{
	case FREEZE_BOTH_NEXT_EVENT:
	    for (dev = inputInfo.devices; dev; dev = dev->next)
	    {
		if (dev == thisDev)
		    continue;
		FreezeThaw(dev, TRUE);
		if ((dev->sync.state == FREEZE_BOTH_NEXT_EVENT) &&
		    (CLIENT_BITS(dev->grab->resource) ==
		     CLIENT_BITS(thisDev->grab->resource)))
		    dev->sync.state = FROZEN_NO_EVENT;
		else
		    dev->sync.other = thisDev->grab;
	    }
	    /* fall through */
	case FREEZE_NEXT_EVENT:
	    thisDev->sync.state = FROZEN_WITH_EVENT;
	    FreezeThaw(thisDev, TRUE);
	    if (thisDev->sync.evcount < count)