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authorMarius Bugge Monsen <mmonsen@trolltech.com>2009-06-22 11:16:56 (GMT)
committerMarius Bugge Monsen <mmonsen@trolltech.com>2009-06-22 11:16:56 (GMT)
commit120252acef2d81d0046b421ad2cc1455975c0052 (patch)
treee7d518de87de63c542c8f9b899638dbe0dce6c19 /src
parent684c43db2b5b0eda94c6893075146fa0e44f2f22 (diff)
parent5281f264dc605766ba82c36fc2c88055234824ff (diff)
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Merge branch '4.5' of git@scm.dev.nokia.troll.no:qt/qt into 4.5
Diffstat (limited to 'src')
-rw-r--r--src/gui/painting/qbackingstore.cpp5
1 files changed, 4 insertions, 1 deletions
diff --git a/src/gui/painting/qbackingstore.cpp b/src/gui/painting/qbackingstore.cpp
index 0f7933c..3bbdf7f 100644
--- a/src/gui/painting/qbackingstore.cpp
+++ b/src/gui/painting/qbackingstore.cpp
@@ -258,7 +258,10 @@ void QWidgetBackingStore::unflushPaint(QWidget *widget, const QRegion &rgn)
bool QWidgetBackingStore::bltRect(const QRect &rect, int dx, int dy, QWidget *widget)
{
const QPoint pos(tlwOffset + widget->mapTo(tlw, rect.topLeft()));
- return windowSurface->scroll(QRect(pos, rect.size()), dx, dy);
+ const QRect tlwRect(QRect(pos, rect.size()));
+ if (dirty.intersects(tlwRect))
+ return false; // We don't want to scroll junk.
+ return windowSurface->scroll(tlwRect, dx, dy);
}
void QWidgetBackingStore::releaseBuffer()