void
TkMacOSXInvalClipRgns(
Tk_Window tkwin)
{
TkWindow *winPtr = (TkWindow *) tkwin;
TkWindow *childPtr;
MacDrawable *macWin = winPtr->privatePtr;
/*
* If already marked we can stop because all descendants will also already
* be marked.
*/
if (!macWin || macWin->flags & TK_CLIP_INVALID) {
return;
}
macWin->flags |= TK_CLIP_INVALID;
if (macWin->visRgn) {
CFRelease(macWin->visRgn);
macWin->visRgn = NULL;
}
if (macWin->aboveVisRgn) {
CFRelease(macWin->aboveVisRgn);
macWin->aboveVisRgn = NULL;
}
/*
* Invalidate clip regions for all children & their descendants, unless the
* child is a toplevel.
*/
childPtr = winPtr->childList;
while (childPtr) {
if (!Tk_IsTopLevel(childPtr)) {
TkMacOSXInvalClipRgns((Tk_Window) childPtr);
}
childPtr = childPtr->nextPtr;
}
/*
* Also, if the window is a container, mark its embedded window.
*/
if (Tk_IsContainer(winPtr)) {
childPtr = TkpGetOtherWindow(winPtr);
if (childPtr) {
TkMacOSXInvalClipRgns((Tk_Window) childPtr);
}
/*
* TODO: Here we should handle out of process embedding.
*/
}
}
void
TkMacInvalClipRgns(
TkWindow *winPtr)
{
TkWindow *childPtr;
/*
* If already marked we can stop because all
* decendants will also already be marked.
*/
if (winPtr->privatePtr->flags & TK_CLIP_INVALID) {
return;
}
winPtr->privatePtr->flags |= TK_CLIP_INVALID;
/*
* Invalidate clip regions for all children &
* their decendants - unless the child is a toplevel.
*/
childPtr = winPtr->childList;
while (childPtr != NULL) {
if (!Tk_IsTopLevel(childPtr) && Tk_IsMapped(childPtr)) {
TkMacInvalClipRgns(childPtr);
}
childPtr = childPtr->nextPtr;
}
/*
* Also, if the window is a container, mark its embedded window
*/
if (Tk_IsContainer(winPtr)) {
childPtr = TkpGetOtherWindow(winPtr);
if (childPtr != NULL && Tk_IsMapped(childPtr)) {
TkMacInvalClipRgns(childPtr);
}
/*
* NOTE: Here we should handle out of process embedding.
*/
}
}
static void
UpdateOffsets(
TkWindow *winPtr,
int deltaX,
int deltaY)
{
TkWindow *childPtr;
if (winPtr->privatePtr == NULL) {
/*
* We haven't called Tk_MakeWindowExist for this window yet. The offset
* information will be postponed and calulated at that time. (This will
* usually only happen when a mapped parent is being moved but has
* child windows that have yet to be mapped.)
*/
return;
}
winPtr->privatePtr->xOff += deltaX;
winPtr->privatePtr->yOff += deltaY;
childPtr = winPtr->childList;
while (childPtr != NULL) {
if (!Tk_IsTopLevel(childPtr)) {
UpdateOffsets(childPtr, deltaX, deltaY);
}
childPtr = childPtr->nextPtr;
}
if (Tk_IsContainer(winPtr)) {
childPtr = TkpGetOtherWindow(winPtr);
if (childPtr != NULL) {
UpdateOffsets(childPtr,deltaX,deltaY);
}
/*
* TODO: Here we should handle out of process embedding.
*/
}
}
void
TkMacUpdateClipRgn(
TkWindow *winPtr)
{
RgnHandle rgn;
int x, y;
TkWindow *win2Ptr;
if (winPtr == NULL) {
return;
}
if (winPtr->privatePtr->flags & TK_CLIP_INVALID) {
rgn = winPtr->privatePtr->aboveClipRgn;
if (tmpRgn == NULL) {
tmpRgn = NewRgn();
}
/*
* Start with a region defined by the window bounds.
*/
x = winPtr->privatePtr->xOff;
y = winPtr->privatePtr->yOff;
SetRectRgn(rgn, (short) x, (short) y,
(short) (winPtr->changes.width + x),
(short) (winPtr->changes.height + y));
/*
* Clip away the area of any windows that may obscure this
* window.
* For a non-toplevel window, first, clip to the parents visable
* clip region.
* Second, clip away any siblings that are higher in the
* stacking order.
* For an embedded toplevel, just clip to the container's visible
* clip region. Remember, we only allow one contained window
* in a frame, and don't support any other widgets in the frame either.
* This is not currently enforced, however.
*/
if (!Tk_IsTopLevel(winPtr)) {
TkMacUpdateClipRgn(winPtr->parentPtr);
SectRgn(rgn,
winPtr->parentPtr->privatePtr->aboveClipRgn, rgn);
win2Ptr = winPtr->nextPtr;
while (win2Ptr != NULL) {
if (Tk_IsTopLevel(win2Ptr) || !Tk_IsMapped(win2Ptr)) {
win2Ptr = win2Ptr->nextPtr;
continue;
}
x = win2Ptr->privatePtr->xOff;
y = win2Ptr->privatePtr->yOff;
SetRectRgn(tmpRgn, (short) x, (short) y,
(short) (win2Ptr->changes.width + x),
(short) (win2Ptr->changes.height + y));
DiffRgn(rgn, tmpRgn, rgn);
win2Ptr = win2Ptr->nextPtr;
}
} else if (Tk_IsEmbedded(winPtr)) {
TkWindow *contWinPtr;
contWinPtr = TkpGetOtherWindow(winPtr);
if (contWinPtr != NULL) {
TkMacUpdateClipRgn(contWinPtr);
SectRgn(rgn,
contWinPtr->privatePtr->aboveClipRgn, rgn);
} else if (gMacEmbedHandler != NULL) {
gMacEmbedHandler->getClipProc((Tk_Window) winPtr, tmpRgn);
SectRgn(rgn, tmpRgn, rgn);
}
/*
* NOTE: Here we should handle out of process embedding.
*/
}
/*
* The final clip region is the aboveClip region (or visable
* region) minus all the children of this window.
* Alternatively, if the window is a container, we must also
* subtract the region of the embedded window.
*/
rgn = winPtr->privatePtr->clipRgn;
CopyRgn(winPtr->privatePtr->aboveClipRgn, rgn);
win2Ptr = winPtr->childList;
while (win2Ptr != NULL) {
if (Tk_IsTopLevel(win2Ptr) || !Tk_IsMapped(win2Ptr)) {
win2Ptr = win2Ptr->nextPtr;
continue;
}
x = win2Ptr->privatePtr->xOff;
y = win2Ptr->privatePtr->yOff;
SetRectRgn(tmpRgn, (short) x, (short) y,
(short) (win2Ptr->changes.width + x),
(short) (win2Ptr->changes.height + y));
DiffRgn(rgn, tmpRgn, rgn);
win2Ptr = win2Ptr->nextPtr;
}
if (Tk_IsContainer(winPtr)) {
win2Ptr = TkpGetOtherWindow(winPtr);
if (win2Ptr != NULL) {
if (Tk_IsMapped(win2Ptr)) {
x = win2Ptr->privatePtr->xOff;
y = win2Ptr->privatePtr->yOff;
SetRectRgn(tmpRgn, (short) x, (short) y,
(short) (win2Ptr->changes.width + x),
(short) (win2Ptr->changes.height + y));
DiffRgn(rgn, tmpRgn, rgn);
}
}
/*
* NOTE: Here we should handle out of process embedding.
*/
}
winPtr->privatePtr->flags &= ~TK_CLIP_INVALID;
}
}
void
TkMacOSXUpdateClipRgn(
TkWindow *winPtr)
{
MacDrawable *macWin;
if (winPtr == NULL) {
return;
}
macWin = winPtr->privatePtr;
if (macWin && macWin->flags & TK_CLIP_INVALID) {
TkWindow *win2Ptr;
if (Tk_IsMapped(winPtr)) {
int rgnChanged = 0;
CGRect bounds;
HIMutableShapeRef rgn;
/*
* Start with a region defined by the window bounds.
*/
TkMacOSXWinCGBounds(winPtr, &bounds);
rgn = TkMacOSXHIShapeCreateMutableWithRect(&bounds);
/*
* Clip away the area of any windows that may obscure this window.
* For a non-toplevel window, first, clip to the parents visible
* clip region. Second, clip away any siblings that are higher in
* the stacking order. For an embedded toplevel, just clip to the
* container's visible clip region. Remember, we only allow one
* contained window in a frame, and don't support any other widgets
* in the frame either. This is not currently enforced, however.
*/
if (!Tk_IsTopLevel(winPtr)) {
TkMacOSXUpdateClipRgn(winPtr->parentPtr);
if (winPtr->parentPtr) {
ChkErr(HIShapeIntersect,
winPtr->parentPtr->privatePtr->aboveVisRgn,
rgn, rgn);
}
win2Ptr = winPtr;
while ((win2Ptr = win2Ptr->nextPtr)) {
if (Tk_IsTopLevel(win2Ptr) || !Tk_IsMapped(win2Ptr)) {
continue;
}
TkMacOSXWinCGBounds(win2Ptr, &bounds);
ChkErr(TkMacOSHIShapeDifferenceWithRect, rgn, &bounds);
}
} else if (Tk_IsEmbedded(winPtr)) {
win2Ptr = TkpGetOtherWindow(winPtr);
if (win2Ptr) {
TkMacOSXUpdateClipRgn(win2Ptr);
ChkErr(HIShapeIntersect,
win2Ptr->privatePtr->aboveVisRgn, rgn, rgn);
} else if (tkMacOSXEmbedHandler != NULL) {
HIShapeRef visRgn;
TkMacOSXCheckTmpQdRgnEmpty();
tkMacOSXEmbedHandler->getClipProc((Tk_Window) winPtr,
tkMacOSXtmpQdRgn);
visRgn = HIShapeCreateWithQDRgn(tkMacOSXtmpQdRgn);
SetEmptyRgn(tkMacOSXtmpQdRgn);
ChkErr(HIShapeIntersect, visRgn, rgn, rgn);
}
/*
* TODO: Here we should handle out of process embedding.
*/
} else if (winPtr->wmInfoPtr->attributes &
kWindowResizableAttribute) {
HIViewRef growBoxView;
OSErr err = HIViewFindByID(HIViewGetRoot(
TkMacOSXDrawableWindow(winPtr->window)),
kHIViewWindowGrowBoxID, &growBoxView);
if (err == noErr) {
ChkErr(HIViewGetFrame, growBoxView, &bounds);
bounds = CGRectOffset(bounds,
-winPtr->wmInfoPtr->xInParent,
-winPtr->wmInfoPtr->yInParent);
ChkErr(TkMacOSHIShapeDifferenceWithRect, rgn, &bounds);
}
}
macWin->aboveVisRgn = HIShapeCreateCopy(rgn);
/*
* The final clip region is the aboveVis region (or visible region)
* minus all the children of this window. If the window is a
* container, we must also subtract the region of the embedded
* window.
*/
win2Ptr = winPtr->childList;
while (win2Ptr) {
if (Tk_IsTopLevel(win2Ptr) || !Tk_IsMapped(win2Ptr)) {
win2Ptr = win2Ptr->nextPtr;
continue;
}
TkMacOSXWinCGBounds(win2Ptr, &bounds);
ChkErr(TkMacOSHIShapeDifferenceWithRect, rgn, &bounds);
rgnChanged = 1;
win2Ptr = win2Ptr->nextPtr;
}
if (Tk_IsContainer(winPtr)) {
win2Ptr = TkpGetOtherWindow(winPtr);
if (win2Ptr) {
if (Tk_IsMapped(win2Ptr)) {
TkMacOSXWinCGBounds(win2Ptr, &bounds);
ChkErr(TkMacOSHIShapeDifferenceWithRect, rgn, &bounds);
rgnChanged = 1;
}
}
/*
* TODO: Here we should handle out of process embedding.
*/
}
if (rgnChanged) {
HIShapeRef diffRgn = HIShapeCreateDifference(
macWin->aboveVisRgn, rgn);
if (!HIShapeIsEmpty(diffRgn)) {
macWin->visRgn = HIShapeCreateCopy(rgn);
}
CFRelease(diffRgn);
}
CFRelease(rgn);
} else {
/*
* An unmapped window has empty clip regions to prevent any
* (erroneous) drawing into it or its children from becoming
* visible. [Bug 940117]
*/
if (!Tk_IsTopLevel(winPtr)) {
TkMacOSXUpdateClipRgn(winPtr->parentPtr);
} else if (Tk_IsEmbedded(winPtr)) {
win2Ptr = TkpGetOtherWindow(winPtr);
if (win2Ptr) {
TkMacOSXUpdateClipRgn(win2Ptr);
}
}
macWin->aboveVisRgn = TkMacOSXHIShapeCreateEmpty();
}
if (!macWin->visRgn) {
macWin->visRgn = HIShapeCreateCopy(macWin->aboveVisRgn);
}
macWin->flags &= ~TK_CLIP_INVALID;
#ifdef TK_MAC_DEBUG_CLIP_REGIONS
TkMacOSXDebugFlashRegion((Drawable) macWin, macWin->visRgn);
#endif /* TK_MAC_DEBUG_CLIP_REGIONS */
}
}
