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Render QOpenGLWidget/QQuickWidget with AlwaysStackOnTop

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QWidget::render was ignoring QOpenGLWidget/QQuickWidget with
AlwaysStackOnTop set, because normally they will be composited later,
however when not doing a backing store render, they need to be painted
right away as there is no later.

Task-number: QTBUG-67533
Change-Id: I08e2eeee5e7a8f0dbbf43f659fcfa9068e8c46d1
Reviewed-by: Laszlo Agocs <laszlo.agocs@qt.io>
This commit is contained in:
Allan Sandfeld Jensen 2018-04-10 10:38:50 +02:00
parent 7e2177464f
commit 0a63d5fed6
1 changed files with 16 additions and 14 deletions
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30
src/widgets/kernel/qwidget.cpp
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@ -5593,21 +5593,23 @@ void QWidgetPrivate::drawWidget(QPaintDevice *pdev, const QRegion &rgn, const QP
if (renderToTexture) {
// This widget renders into a texture which is composed later. We just need to
// punch a hole in the backingstore, so the texture will be visible.
if (!q->testAttribute(Qt::WA_AlwaysStackOnTop)) {
beginBackingStorePainting();
if (backingStore) {
QPainter p(q);
p.setCompositionMode(QPainter::CompositionMode_Source);
p.fillRect(q->rect(), Qt::transparent);
} else {
QImage img = grabFramebuffer();
QPainter p(q);
// We are not drawing to a backingstore: fall back to QImage
p.drawImage(q->rect(), img);
skipPaintEvent = true;
}
endBackingStorePainting();
beginBackingStorePainting();
if (!q->testAttribute(Qt::WA_AlwaysStackOnTop) && backingStore) {
QPainter p(q);
p.setCompositionMode(QPainter::CompositionMode_Source);
p.fillRect(q->rect(), Qt::transparent);
} else if (!backingStore) {
// We are not drawing to a backingstore: fall back to QImage
QImage img = grabFramebuffer();
// grabFramebuffer() always sets the format to RGB32
// regardless of whether it is transparent or not.
if (img.format() == QImage::Format_RGB32)
img.reinterpretAsFormat(QImage::Format_ARGB32_Premultiplied);
QPainter p(q);
p.drawImage(q->rect(), img);
skipPaintEvent = true;
}
endBackingStorePainting();
if (renderToTextureReallyDirty)
renderToTextureReallyDirty = 0;
else