Fixes QWS window decoration offset issues

When using OpenGL ES in conjunction with Qt/Embedded,
Q_BACKINGSTORE_SUBSURFACES is defined and the subsequent code path shared
between this define and QWS defines results in window decoration offset
errors.

Merge-request: 714
Reviewed-by: Donald Carr <donald.carr@nokia.com>

1 files changed, 5 insertions, 1 deletions

diff --git a/src/gui/painting/qwindowsurface_qws.cpp b/src/gui/painting/qwindowsurface_qws.cpp
index a816ed2..170668b 100644
--- a/src/gui/painting/qwindowsurface_qws.cpp
+++ b/src/gui/painting/qwindowsurface_qws.cpp
@@ -882,7 +882,11 @@ void QWSMemorySurface::beginPaint(const QRegion &rgn)
         const QVector<QRect> rects = rgn.rects();
         const QColor blank = Qt::transparent;
         for (QVector<QRect>::const_iterator it = rects.begin(); it != rects.end(); ++it) {
-            p.fillRect(*it, blank);
+            QRect r = *it;
+#ifdef Q_BACKINGSTORE_SUBSURFACES
+            r.translate(painterOffset());
+#endif
+            p.fillRect(r, blank);
         }
     }
     QWSWindowSurface::beginPaint(rgn);