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Translucent background support

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Change-Id: I6e7b5869097f579020c7a4439441a63a0771e955
Task-number: QTBUG-55956
Reviewed-by: Laszlo Agocs <laszlo.agocs@qt.io>
This commit is contained in:
Tasuku Suzuki 2017-06-17 15:28:49 +09:00
parent fa4d3dec37
commit a92a519e79
2 changed files with 10 additions and 2 deletions
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10
src/plugins/platforms/wayland/qwaylandshmbackingstore.cpp
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@ -171,12 +171,20 @@ QPaintDevice *QWaylandShmBackingStore::paintDevice()
return contentSurface(); return contentSurface();
} }
void QWaylandShmBackingStore::beginPaint(const QRegion &) void QWaylandShmBackingStore::beginPaint(const QRegion &region)
{ {
mPainting = true; mPainting = true;
ensureSize(); ensureSize();
waylandWindow()->setCanResize(false); waylandWindow()->setCanResize(false);
if (mBackBuffer->image()->hasAlphaChannel()) {
QPainter p(paintDevice());
p.setCompositionMode(QPainter::CompositionMode_Source);
const QColor blank = Qt::transparent;
for (const QRect &rect : region)
p.fillRect(rect, blank);
}
} }
void QWaylandShmBackingStore::endPaint() void QWaylandShmBackingStore::endPaint()

2
src/plugins/platforms/wayland/qwaylandshmbackingstore_p.h
View File

@ -94,7 +94,7 @@ public:
void flush(QWindow *window, const QRegion &region, const QPoint &offset) override; void flush(QWindow *window, const QRegion &region, const QPoint &offset) override;
void resize(const QSize &size, const QRegion &staticContents) override; void resize(const QSize &size, const QRegion &staticContents) override;
void resize(const QSize &size); void resize(const QSize &size);
void beginPaint(const QRegion &) override; void beginPaint(const QRegion &region) override;
void endPaint() override; void endPaint() override;
QWaylandAbstractDecoration *windowDecoration() const; QWaylandAbstractDecoration *windowDecoration() const;