Proposal for X Server Plug-in Picker
Deron Johnson
Deron.Johnson at Sun.COM
Thu Nov 30 12:47:39 PST 2006
As a further illustration of this proposal, here is the code for the
changed dix routines:
void
ComputeFreezes()
{
register DeviceIntPtr replayDev = syncEvents.replayDev;
register int i;
WindowPtr w;
register xEvent *xE;
int count;
GrabPtr grab;
register DeviceIntPtr dev;
for (dev = inputInfo.devices; dev; dev = dev->next)
FreezeThaw(dev, dev->sync.other || (dev->sync.state >= FROZEN));
if (syncEvents.playingEvents || (!replayDev && !syncEvents.pending))
return;
syncEvents.playingEvents = TRUE;
if (replayDev)
{
xE = replayDev->sync.event;
count = replayDev->sync.evcount;
syncEvents.replayDev = (DeviceIntPtr)NULL;
#ifdef PICKER
PICKER_WINDOWS_RESTRUCTURED(syncEvents.replayWin);
#endif /* PICKER */
w = XYToWindow( XE_KBPTR.rootX, XE_KBPTR.rootY);
for (i = 0; i < spriteTraceGood; i++)
{
if (syncEvents.replayWin == spriteTrace[i])
{
if (!CheckDeviceGrabs(replayDev, xE, i+1, count)) {
if (replayDev->focus)
DeliverFocusedEvent(replayDev, xE, w, count);
else
DeliverDeviceEvents(w, xE, NullGrab, NullWindow,
replayDev, count);
}
goto playmore;
}
}
/* must not still be in the same stack */
if (replayDev->focus)
DeliverFocusedEvent(replayDev, xE, w, count);
else
DeliverDeviceEvents(w, xE, NullGrab, NullWindow, replayDev,
count);
}
playmore:
for (dev = inputInfo.devices; dev; dev = dev->next)
{
if (!dev->sync.frozen)
{
PlayReleasedEvents();
break;
}
}
syncEvents.playingEvents = FALSE;
/* the following may have been skipped during replay, so do it now */
if ((grab = inputInfo.pointer->grab) && grab->confineTo)
{
if (grab->confineTo->drawable.pScreen != sprite.hotPhys.pScreen)
sprite.hotPhys.x = sprite.hotPhys.y = 0;
ConfineCursorToWindow(grab->confineTo, TRUE, TRUE);
}
else
ConfineCursorToWindow(WindowTable[sprite.hotPhys.pScreen->myNum],
TRUE, FALSE);
PostNewCursor();
}
static void
FixUpEventFromWindow(
xEvent *xE,
WindowPtr pWin,
Window child,
Bool calcChild)
{
#ifdef PICKER
PICKER_FIXUP_EVENT_FROM_WINDOW(pWin, xE, pWin, child, calcChild);
#else
if (calcChild)
{
WindowPtr w=spriteTrace[spriteTraceGood-1];
/* If the search ends up past the root should the child field be
set to none or should the value in the argument be passed
through. It probably doesn't matter since everyone calls
this function with child == None anyway. */
while (w)
{
/* If the source window is same as event window, child should be
none. Don't bother going all all the way back to the
root. */
if (w == pWin)
{
child = None;
break;
}
if (w->parent == pWin)
{
child = w->drawable.id;
break;
}
w = w->parent;
}
}
XE_KBPTR.root = ROOT->drawable.id;
XE_KBPTR.event = pWin->drawable.id;
if (sprite.hot.pScreen == pWin->drawable.pScreen)
{
XE_KBPTR.sameScreen = xTrue;
XE_KBPTR.child = child;
XE_KBPTR.eventX =
XE_KBPTR.rootX - pWin->drawable.x;
XE_KBPTR.eventY =
XE_KBPTR.rootY - pWin->drawable.y;
}
else
{
XE_KBPTR.sameScreen = xFalse;
XE_KBPTR.child = None;
XE_KBPTR.eventX = 0;
XE_KBPTR.eventY = 0;
}
#endif /* PICKER */
}
static WindowPtr
XYToWindow(int x, int y)
{
#ifdef PICKER
return PICKER_XY_TO_WINDOW(x, y);
#else
register WindowPtr pWin;
BoxRec box;
spriteTraceGood = 1; /* root window still there */
pWin = ROOT->firstChild;
while (pWin)
{
if ((pWin->mapped) &&
(x >= pWin->drawable.x - wBorderWidth (pWin)) &&
(x < pWin->drawable.x + (int)pWin->drawable.width +
wBorderWidth(pWin)) &&
(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) || PointInBorderSize(pWin, x, y))
&& (!wInputShape(pWin) ||
POINT_IN_REGION(pWin->drawable.pScreen,
wInputShape(pWin),
x - pWin->drawable.x,
y - pWin->drawable.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];
#endif /* PICKER */
}
static Bool
CheckMotion(xEvent *xE)
{
WindowPtr prevSpriteWin = sprite.win;
#ifdef PANORAMIX
if(!noPanoramiXExtension)
return XineramaCheckMotion(xE);
#endif
if (xE && !syncEvents.playingEvents)
{
if (sprite.hot.pScreen != sprite.hotPhys.pScreen)
{
sprite.hot.pScreen = sprite.hotPhys.pScreen;
ROOT = WindowTable[sprite.hot.pScreen->myNum];
}
#ifdef XEVIE
xeviehot.x =
#endif
sprite.hot.x = XE_KBPTR.rootX;
#ifdef XEVIE
xeviehot.y =
#endif
sprite.hot.y = XE_KBPTR.rootY;
if (sprite.hot.x < sprite.physLimits.x1)
#ifdef XEVIE
xeviehot.x =
#endif
sprite.hot.x = sprite.physLimits.x1;
else if (sprite.hot.x >= sprite.physLimits.x2)
#ifdef XEVIE
xeviehot.x =
#endif
sprite.hot.x = sprite.physLimits.x2 - 1;
if (sprite.hot.y < sprite.physLimits.y1)
#ifdef XEVIE
xeviehot.y =
#endif
sprite.hot.y = sprite.physLimits.y1;
else if (sprite.hot.y >= sprite.physLimits.y2)
#ifdef XEVIE
xeviehot.y =
#endif
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_KBPTR.rootX) ||
(sprite.hotPhys.y != XE_KBPTR.rootY))
{
(*sprite.hotPhys.pScreen->SetCursorPosition)(
sprite.hotPhys.pScreen,
sprite.hotPhys.x, sprite.hotPhys.y, FALSE);
}
XE_KBPTR.rootX = sprite.hot.x;
XE_KBPTR.rootY = sprite.hot.y;
}
#ifdef PICKER
if (xE == NULL) {
#ifdef XEVIE
xeviewin =
#endif
sprite.win = PICKER_WINDOWS_RESTRUCTURED(sprite.win);
}
#endif /* PICKER */
#ifdef XEVIE
xeviewin =
#endif
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;
}
int
ProcQueryPointer(ClientPtr client)
{
xQueryPointerReply rep;
WindowPtr pWin, t;
REQUEST(xResourceReq);
DeviceIntPtr mouse = inputInfo.pointer;
REQUEST_SIZE_MATCH(xResourceReq);
pWin = SecurityLookupWindow(stuff->id, client, SecurityReadAccess);
if (!pWin)
return BadWindow;
if (mouse->valuator->motionHintWindow)
MaybeStopHint(mouse, client);
rep.type = X_Reply;
rep.sequenceNumber = client->sequence;
rep.mask = mouse->button->state | inputInfo.keyboard->key->state;
rep.length = 0;
rep.root = (ROOT)->drawable.id;
rep.rootX = sprite.hot.x;
rep.rootY = sprite.hot.y;
rep.child = None;
#ifdef PICKER
PICKER_QUERY_POINTER(sprite.win, pWin, x, y, &rep.winX, &rep.winY,
&rep.child, &rep.sameScreen);
#else
if (sprite.hot.pScreen == pWin->drawable.pScreen)
{
rep.sameScreen = xTrue;
rep.winX = sprite.hot.x - pWin->drawable.x;
rep.winY = sprite.hot.y - pWin->drawable.y;
for (t = sprite.win; t; t = t->parent)
if (t->parent == pWin)
{
rep.child = t->drawable.id;
break;
}
}
else
{
rep.sameScreen = xFalse;
rep.winX = 0;
rep.winY = 0;
}
#endif /* PICKER */
#ifdef PANORAMIX
if(!noPanoramiXExtension) {
rep.rootX += panoramiXdataPtr[0].x;
rep.rootY += panoramiXdataPtr[0].y;
if(stuff->id == rep.root) {
rep.winX += panoramiXdataPtr[0].x;
rep.winY += panoramiXdataPtr[0].y;
}
}
#endif
WriteReplyToClient(client, sizeof(xQueryPointerReply), &rep);
return(Success);
}
int
ProcTranslateCoords(register ClientPtr client)
{
REQUEST(xTranslateCoordsReq);
register WindowPtr pWin, pDst;
xTranslateCoordsReply rep;
REQUEST_SIZE_MATCH(xTranslateCoordsReq);
pWin = (WindowPtr)SecurityLookupWindow(stuff->srcWid, client,
SecurityReadAccess);
if (!pWin)
return(BadWindow);
pDst = (WindowPtr)SecurityLookupWindow(stuff->dstWid, client,
SecurityReadAccess);
if (!pDst)
return(BadWindow);
rep.type = X_Reply;
rep.length = 0;
rep.sequenceNumber = client->sequence;
#ifdef PICKER
PICKER_TRANSLATE_COORDS(pWin, pDst, x, y, &rep.dstX, &rep.dstY,
&rep.child, &rep.sameScreen);
#else
if (!SAME_SCREENS(pWin->drawable, pDst->drawable))
{
rep.sameScreen = xFalse;
rep.child = None;
rep.dstX = rep.dstY = 0;
}
else
{
rep.sameScreen = xTrue;
rep.child = None;
INT16 x, y;
rep.sameScreen = xTrue;
rep.child = None;
/* computing absolute coordinates -- adjust to destination later */
x = pWin->drawable.x + stuff->srcX;
y = pWin->drawable.y + stuff->srcY;
pWin = pDst->firstChild;
while (pWin)
{
#ifdef SHAPE
BoxRec box;
#endif
if ((pWin->mapped) &&
(x >= pWin->drawable.x - wBorderWidth (pWin)) &&
(x < pWin->drawable.x + (int)pWin->drawable.width +
wBorderWidth (pWin)) &&
(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))
&& (!wInputShape(pWin) ||
POINT_IN_REGION(pWin->drawable.pScreen,
wInputShape(pWin),
x - pWin->drawable.x,
y - pWin->drawable.y, &box))
#endif
)
{
rep.child = pWin->drawable.id;
pWin = (WindowPtr) NULL;
}
else
pWin = pWin->nextSib;
}
/* adjust to destination coordinates */
rep.dstX = x - pDst->drawable.x;
rep.dstY = y - pDst->drawable.y;
#endif /* PICKER */
}
WriteReplyToClient(client, sizeof(xTranslateCoordsReply), &rep);
return(client->noClientException);
}
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