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widgets: Clarify top level flush region in QWidgetRepaintManager

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Change-Id: I9a8d11569d33bf580bd50b710cf072952ea3626b
Reviewed-by: Paul Olav Tvete <paul.tvete@qt.io>
This commit is contained in:
Tor Arne Vestbø 2019-08-23 12:07:33 +02:00
parent dbab68a127
commit 787314c230
2 changed files with 9 additions and 9 deletions
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16
src/widgets/kernel/qwidgetrepaintmanager.cpp
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@ -964,7 +964,7 @@ void QWidgetRepaintManager::paintAndFlush()
#endif
// Always flush repainted areas
needsFlush += toClean;
topLevelNeedsFlush += toClean;
store->beginPaint(toClean);
@ -1021,13 +1021,13 @@ void QWidgetRepaintManager::markNeedsFlush(QWidget *widget, const QRegion &regio
if (widget == tlw) {
// Top-level (native)
if (!widget->testAttribute(Qt::WA_WState_InPaintEvent))
needsFlush += region;
topLevelNeedsFlush += region;
} else if (!hasPlatformWindow(widget) && !widget->isWindow()) {
QWidget *nativeParent = widget->nativeParentWidget();
if (nativeParent == tlw) {
// Alien widgets with the top-level as the native parent (common case)
if (!widget->testAttribute(Qt::WA_WState_InPaintEvent))
needsFlush += region.translated(topLevelOffset);
topLevelNeedsFlush += region.translated(topLevelOffset);
} else {
// Alien widgets with native parent != tlw
const QPoint nativeParentOffset = widget->mapTo(nativeParent, QPoint());
@ -1063,11 +1063,11 @@ void QWidgetRepaintManager::flush(QWidget *widget)
const bool hasDirtyOnScreenWidgets = !dirtyOnScreenWidgets.isEmpty();
bool flushed = false;
// Flush the region in needsFlush
if (!needsFlush.isEmpty()) {
// Flush the top level widget
if (!topLevelNeedsFlush.isEmpty()) {
QWidget *target = widget ? widget : tlw;
flush(target, needsFlush, widgetTexturesFor(tlw, tlw));
needsFlush = QRegion();
flush(target, topLevelNeedsFlush, widgetTexturesFor(tlw, tlw));
topLevelNeedsFlush = QRegion();
flushed = true;
}
@ -1321,7 +1321,7 @@ QRegion QWidgetRepaintManager::dirtyRegion(QWidget *widget) const
}
// Append the region that needs flush.
r += needsFlush;
r += topLevelNeedsFlush;
for (QWidget *w : dirtyOnScreenWidgets) {
if (widgetDirty && w != widget && !widget->isAncestorOf(w))

2
src/widgets/kernel/qwidgetrepaintmanager_p.h
View File

@ -133,7 +133,7 @@ private:
QVector<QWidget *> dirtyWidgets;
QVector<QWidget *> dirtyRenderToTextureWidgets;
QRegion needsFlush;
QRegion topLevelNeedsFlush;
QVector<QWidget *> dirtyOnScreenWidgets;
QList<QWidget *> staticWidgets;