MODULE_SCOPE void
TkMacOSXDebugFlashRegion(
Drawable d,
HIShapeRef rgn)
{
TkMacOSXInitNamedDebugSymbol(HIToolbox, int, QDDebugFlashRegion,
CGrafPtr port, RgnHandle region);
CFShow(rgn);
if (d && rgn && QDDebugFlashRegion && !HIShapeIsEmpty(rgn)) {
CGrafPtr port = TkMacOSXGetDrawablePort(d);
if (port) {
static RgnHandle qdRgn = NULL;
if (!qdRgn) {
qdRgn = NewRgn();
}
ChkErr(HIShapeGetAsQDRgn, rgn, qdRgn);
/*
* Carbon-internal region flashing SPI (c.f. Technote 2124)
*/
QDDebugFlashRegion(port, qdRgn);
SetEmptyRgn(qdRgn);
}
}
}
void
TkMacOSXInvalidateWindow(
MacDrawable *macWin, /* Make window that's causing damage. */
int flag) /* Should be TK_WINDOW_ONLY or
* TK_PARENT_WINDOW */
{
WindowRef windowRef;
HIShapeRef rgn;
windowRef = TkMacOSXDrawableWindow((Drawable)macWin);
if (macWin->flags & TK_CLIP_INVALID) {
TkMacOSXUpdateClipRgn(macWin->winPtr);
}
rgn = (flag == TK_WINDOW_ONLY) ? macWin->visRgn : macWin->aboveVisRgn;
if (!HIShapeIsEmpty(rgn)) {
TkMacOSXCheckTmpQdRgnEmpty();
ChkErr(HIShapeGetAsQDRgn, rgn, tkMacOSXtmpQdRgn);
InvalWindowRgn(windowRef, tkMacOSXtmpQdRgn);
SetEmptyRgn(tkMacOSXtmpQdRgn);
}
#ifdef TK_MAC_DEBUG_CLIP_REGIONS
TkMacOSXDebugFlashRegion((Drawable) macWin, rgn);
#endif /* TK_MAC_DEBUG_CLIP_REGIONS */
}
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 */
}
}
int
TkMacOSXIsEmptyRegion(
TkRegion r)
{
return HIShapeIsEmpty((HIMutableShapeRef) r) ? 1 : 0;
}
