/*!
\internal
Create's a RegionHandle, it's the caller's responsibility to release.
Returns 0 if the QRegion overflows.
*/
RgnHandle QRegion::toQDRgnForUpdate_sys() const
{
RgnHandle rgnHandle = qt_mac_get_rgn();
if(d->qt_rgn && d->qt_rgn->numRects) {
RgnHandle tmp_rgn = qt_mac_get_rgn();
int n = d->qt_rgn->numRects;
const QRect *qt_r = (n == 1) ? &d->qt_rgn->extents : d->qt_rgn->rects.constData();
while (n--) {
// detect overflow. Tested for use with HIViewSetNeedsDisplayInRegion
// in QWidgetPrivate::update_sys().
enum { HIViewSetNeedsDisplayInRegionOverflow = 10000 }; // empirically determined conservative value
if (qt_r->right() > HIViewSetNeedsDisplayInRegionOverflow || qt_r->bottom() > HIViewSetNeedsDisplayInRegionOverflow) {
qt_mac_dispose_rgn(tmp_rgn);
qt_mac_dispose_rgn(rgnHandle);
return 0;
}
SetRectRgn(tmp_rgn,
qMax(SHRT_MIN, qt_r->x()),
qMax(SHRT_MIN, qt_r->y()),
qMin(SHRT_MAX, qt_r->right() + 1),
qMin(SHRT_MAX, qt_r->bottom() + 1));
UnionRgn(rgnHandle, tmp_rgn, rgnHandle);
++qt_r;
}
qt_mac_dispose_rgn(tmp_rgn);
}
return rgnHandle;
}
QRegion QRegion::fromHIShapeRef(HIShapeRef shape)
{
QRegion returnRegion;
returnRegion.detach();
// Begin gratuitous #if-defery
#if (MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5)
# ifndef Q_WS_MAC64
if (QSysInfo::MacintoshVersion >= QSysInfo::MV_10_5) {
# endif
HIShapeEnumerate(shape, kHIShapeParseFromTopLeft, shape2QRegionHelper, &returnRegion);
# ifndef Q_WS_MAC64
} else
# endif
#endif
{
#if !defined(Q_WS_MAC64) && !defined(QT_MAC_USE_COCOA)
if (ptrHIShapeGetAsQDRgn == 0) {
QLibrary library(QLatin1String("/System/Library/Frameworks/Carbon.framework/Carbon"));
library.setLoadHints(QLibrary::ExportExternalSymbolsHint);
ptrHIShapeGetAsQDRgn = reinterpret_cast<PtrHIShapeGetAsQDRgn>(library.resolve("HIShapeGetAsQDRgn"));
}
RgnHandle rgn = qt_mac_get_rgn();
ptrHIShapeGetAsQDRgn(shape, rgn);
returnRegion = QRegion::fromQDRgn(rgn);
qt_mac_dispose_rgn(rgn);
#endif
}
return returnRegion;
}
/*!
\internal
Create's a RegionHandle, it's the caller's responsibility to release.
*/
RgnHandle QRegion::toQDRgn() const
{
RgnHandle rgnHandle = qt_mac_get_rgn();
if(d->qt_rgn && d->qt_rgn->numRects) {
RgnHandle tmp_rgn = qt_mac_get_rgn();
int n = d->qt_rgn->numRects;
const QRect *qt_r = (n == 1) ? &d->qt_rgn->extents : d->qt_rgn->rects.constData();
while (n--) {
SetRectRgn(tmp_rgn,
qMax(SHRT_MIN, qt_r->x()),
qMax(SHRT_MIN, qt_r->y()),
qMin(SHRT_MAX, qt_r->right() + 1),
qMin(SHRT_MAX, qt_r->bottom() + 1));
UnionRgn(rgnHandle, tmp_rgn, rgnHandle);
++qt_r;
}
qt_mac_dispose_rgn(tmp_rgn);
}
return rgnHandle;
}
/****************************************************************************
Hacks to glue AGL to an HIView
***************************************************************************/
QRegion qt_mac_get_widget_rgn(const QWidget *widget)
{
if(!widget->isVisible() || widget->isMinimized())
return QRegion();
const QRect wrect = QRect(qt_mac_posInWindow(widget), widget->size());
if(!wrect.isValid())
return QRegion();
RgnHandle macr = qt_mac_get_rgn();
GetControlRegion((HIViewRef)widget->winId(), kControlStructureMetaPart, macr);
OffsetRgn(macr, wrect.x(), wrect.y());
QRegion ret = qt_mac_convert_mac_region(macr);
QPoint clip_pos = wrect.topLeft();
for(const QWidget *last_clip = 0, *clip = widget; clip; last_clip = clip, clip = clip->parentWidget()) {
if(clip != widget) {
GetControlRegion((HIViewRef)clip->winId(), kControlStructureMetaPart, macr);
OffsetRgn(macr, clip_pos.x(), clip_pos.y());
ret &= qt_mac_convert_mac_region(macr);
}
const QObjectList &children = clip->children();
for(int i = children.size()-1; i >= 0; --i) {
if(QWidget *child = qobject_cast<QWidget*>(children.at(i))) {
if(child == last_clip)
break;
// This check may seem weird, but when we are using a unified toolbar
// The widget is actually being owned by that toolbar and not by Qt.
// This means that the geometry it reports will be wrong
// and will accidentally cause problems when calculating the region
// So, it is better to skip these widgets since they aren't the hierarchy
// anyway.
if (HIViewGetSuperview(HIViewRef(child->winId())) != HIViewRef(clip->winId()))
continue;
if(child->isVisible() && !child->isMinimized() && !child->isTopLevel()) {
const QRect childRect = QRect(clip_pos+child->pos(), child->size());
if(childRect.isValid() && wrect.intersects(childRect)) {
GetControlRegion((HIViewRef)child->winId(), kControlStructureMetaPart, macr);
OffsetRgn(macr, childRect.x(), childRect.y());
ret -= qt_mac_convert_mac_region(macr);
}
}
}
}
if(clip->isWindow())
break;
clip_pos -= clip->pos();
}
qt_mac_dispose_rgn(macr);
return ret;
}
