diff options
Diffstat (limited to 'src/plugins/platforms/xlib/qxlibwindowsurface.cpp')
| -rw-r--r-- | src/plugins/platforms/xlib/qxlibwindowsurface.cpp | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/src/plugins/platforms/xlib/qxlibwindowsurface.cpp b/src/plugins/platforms/xlib/qxlibwindowsurface.cpp index 78fe387bb8..a917f452e8 100644 --- a/src/plugins/platforms/xlib/qxlibwindowsurface.cpp +++ b/src/plugins/platforms/xlib/qxlibwindowsurface.cpp @@ -49,6 +49,8 @@ #include "qxlibscreen.h" #include "qxlibdisplay.h" +#include "qpainter.h" + # include <sys/ipc.h> # include <sys/shm.h> # include <X11/extensions/XShm.h> @@ -108,7 +110,7 @@ void QXlibWindowSurface::resizeShmImage(int width, int height) Q_ASSERT(shm_attach_status == True); - shm_img = QImage( (uchar*) image->data, image->width, image->height, image->bytes_per_line, QImage::Format_RGB32 ); + shm_img = QImage( (uchar*) image->data, image->width, image->height, image->bytes_per_line, win->format() ); #endif painted = false; } @@ -213,6 +215,16 @@ void QXlibWindowSurface::beginPaint(const QRegion ®ion) { Q_UNUSED(region); resizeBuffer(size()); + + if (shm_img.hasAlphaChannel()) { + QPainter p(&shm_img); + p.setCompositionMode(QPainter::CompositionMode_Source); + const QVector<QRect> rects = region.rects(); + const QColor blank = Qt::transparent; + for (QVector<QRect>::const_iterator it = rects.begin(); it != rects.end(); ++it) { + p.fillRect(*it, blank); + } + } } void QXlibWindowSurface::endPaint(const QRegion ®ion) |