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widgets: Clarify how widgets needing flush is tracked

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Change-Id: Ia2c2c4b830e4441e50c66dd3fef5bc060f76551e
Reviewed-by: Paul Olav Tvete <paul.tvete@qt.io>
This commit is contained in:
Tor Arne Vestbø 2019-08-23 12:11:12 +02:00
parent 787314c230
commit 74be54684c
2 changed files with 16 additions and 15 deletions
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27
src/widgets/kernel/qwidgetrepaintmanager.cpp
View File

@ -332,10 +332,11 @@ void QWidgetRepaintManager::removeDirtyWidget(QWidget *w)
return;
dirtyWidgets.removeAll(w);
dirtyOnScreenWidgets.removeAll(w);
dirtyRenderToTextureWidgets.removeAll(w);
resetWidget(w);
needsFlushWidgets.removeAll(w);
QWidgetPrivate *wd = w->d_func();
const int n = wd->children.count();
for (int i = 0; i < n; ++i) {
@ -920,7 +921,7 @@ void QWidgetRepaintManager::paintAndFlush()
if (hasPlatformWindow(w) || (npw && npw != tlw)) {
if (!hasPlatformWindow(w))
w = npw;
appendDirtyOnScreenWidget(w);
markNeedsFlush(w);
}
}
}
@ -1031,15 +1032,15 @@ void QWidgetRepaintManager::markNeedsFlush(QWidget *widget, const QRegion &regio
} else {
// Alien widgets with native parent != tlw
const QPoint nativeParentOffset = widget->mapTo(nativeParent, QPoint());
appendDirtyOnScreenWidget(nativeParent, region.translated(nativeParentOffset));
markNeedsFlush(nativeParent, region.translated(nativeParentOffset));
}
} else {
// Native child widgets
appendDirtyOnScreenWidget(widget, region);
markNeedsFlush(widget, region);
}
}
void QWidgetRepaintManager::appendDirtyOnScreenWidget(QWidget *widget, const QRegion &region)
void QWidgetRepaintManager::markNeedsFlush(QWidget *widget, const QRegion &region)
{
if (!widget)
return;
@ -1050,8 +1051,8 @@ void QWidgetRepaintManager::appendDirtyOnScreenWidget(QWidget *widget, const QRe
*widgetPrivate->needsFlush += region;
if (!dirtyOnScreenWidgets.contains(widget))
dirtyOnScreenWidgets.append(widget);
if (!needsFlushWidgets.contains(widget))
needsFlushWidgets.append(widget);
}
/*!
@ -1060,7 +1061,7 @@ void QWidgetRepaintManager::appendDirtyOnScreenWidget(QWidget *widget, const QRe
*/
void QWidgetRepaintManager::flush(QWidget *widget)
{
const bool hasDirtyOnScreenWidgets = !dirtyOnScreenWidgets.isEmpty();
const bool hasNeedsFlushWidgets = !needsFlushWidgets.isEmpty();
bool flushed = false;
// Flush the top level widget
@ -1071,8 +1072,8 @@ void QWidgetRepaintManager::flush(QWidget *widget)
flushed = true;
}
// Render-to-texture widgets are not in needsFlush so flush if we have not done it above.
if (!flushed && !hasDirtyOnScreenWidgets) {
// Render-to-texture widgets are not in topLevelNeedsFlush so flush if we have not done it above.
if (!flushed && !hasNeedsFlushWidgets) {
#ifndef QT_NO_OPENGL
if (!tlw->d_func()->topData()->widgetTextures.empty()) {
QPlatformTextureList *widgetTextures = widgetTexturesFor(tlw, tlw);
@ -1084,10 +1085,10 @@ void QWidgetRepaintManager::flush(QWidget *widget)
#endif
}
if (!hasDirtyOnScreenWidgets)
if (!hasNeedsFlushWidgets)
return;
for (QWidget *w : qExchange(dirtyOnScreenWidgets, {})) {
for (QWidget *w : qExchange(needsFlushWidgets, {})) {
QWidgetPrivate *wd = w->d_func();
Q_ASSERT(wd->needsFlush);
QPlatformTextureList *widgetTexturesForNative = wd->textureChildSeen ? widgetTexturesFor(tlw, w) : 0;
@ -1323,7 +1324,7 @@ QRegion QWidgetRepaintManager::dirtyRegion(QWidget *widget) const
// Append the region that needs flush.
r += topLevelNeedsFlush;
for (QWidget *w : dirtyOnScreenWidgets) {
for (QWidget *w : needsFlushWidgets) {
if (widgetDirty && w != widget && !widget->isAncestorOf(w))
continue;
QWidgetPrivate *wd = w->d_func();

4
src/widgets/kernel/qwidgetrepaintmanager_p.h
View File

@ -113,7 +113,7 @@ private:
bool syncAllowed();
void paintAndFlush();
void appendDirtyOnScreenWidget(QWidget *widget, const QRegion &region = QRegion());
void markNeedsFlush(QWidget *widget, const QRegion &region = QRegion());
void flush(QWidget *widget = nullptr);
void flush(QWidget *widget, const QRegion &region, QPlatformTextureList *widgetTextures);
@ -134,7 +134,7 @@ private:
QVector<QWidget *> dirtyRenderToTextureWidgets;
QRegion topLevelNeedsFlush;
QVector<QWidget *> dirtyOnScreenWidgets;
QVector<QWidget *> needsFlushWidgets;
QList<QWidget *> staticWidgets;