diff options
| author | Gabriel de Dietrich <gabriel.dedietrich@digia.com> | 2013-09-25 18:18:47 +0200 |
|---|---|---|
| committer | The Qt Project <gerrit-noreply@qt-project.org> | 2013-09-26 22:25:10 +0200 |
| commit | 79fc0ff67a4f0b606d3a321914c156fc66d8fb58 (patch) | |
| tree | a8d2e5fe19de6f74ce9825a0d00813a7be4a6148 /src | |
| parent | c533e80e3151dcd4b48548a1244f90ad035d7385 (diff) | |
QCocoaBackingStore: Initialize non-opaque images with transparent color
In particular, this is needed when a QWidget has WA_TranslucentBackground set
and nobody is painting anything behind it (except maybe some native view).
Change-Id: Ib1f0714f85fa7eeced527617ecd09bb2ed6ddfc9
Reviewed-by: Morten Johan Sørvig <morten.sorvig@digia.com>
Diffstat (limited to 'src')
| -rw-r--r-- | src/plugins/platforms/cocoa/qcocoabackingstore.mm | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/src/plugins/platforms/cocoa/qcocoabackingstore.mm b/src/plugins/platforms/cocoa/qcocoabackingstore.mm index 4881dcef71..665b3d4c13 100644 --- a/src/plugins/platforms/cocoa/qcocoabackingstore.mm +++ b/src/plugins/platforms/cocoa/qcocoabackingstore.mm @@ -77,6 +77,8 @@ QPaintDevice *QCocoaBackingStore::paintDevice() ? QImage::Format_ARGB32_Premultiplied : QImage::Format_RGB32; m_qImage = QImage(m_requestedSize * scaleFactor, format); m_qImage.setDevicePixelRatio(scaleFactor); + if (format == QImage::Format_ARGB32_Premultiplied) + m_qImage.fill(Qt::transparent); } return &m_qImage; } |