From 796a9c9704965c7dd89f059c762ace57e5931dea Mon Sep 17 00:00:00 2001 From: Yoann Lopes Date: Wed, 30 Dec 2009 13:44:58 +0100 Subject: Fixes painting artifacts when using CacheBackground in a QGraphicsView. The problem was that when the background cache was invalidated, it was entirely recreated but only the exposed area of the view was repainted in it, causing the cache to be partly empty in some cases. Now the background cache is always fully repainted when it is invalidated. Task-number: QTBUG-6935 Reviewed-by: ogoffart (cherry picked from commit 2600fd42117913b427d07e510724b0ea5e355205) --- src/gui/graphicsview/qgraphicsview.cpp | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/src/gui/graphicsview/qgraphicsview.cpp b/src/gui/graphicsview/qgraphicsview.cpp index a7c62c0..cc5f257 100644 --- a/src/gui/graphicsview/qgraphicsview.cpp +++ b/src/gui/graphicsview/qgraphicsview.cpp @@ -3365,7 +3365,8 @@ void QGraphicsView::paintEvent(QPaintEvent *event) #define X11 qt_x11Data #endif backgroundPainter.setCompositionMode(QPainter::CompositionMode_Source); - drawBackground(&backgroundPainter, exposedSceneRect); + QRectF backgroundExposedSceneRect = mapToScene(d->backgroundPixmapExposed.boundingRect()).boundingRect(); + drawBackground(&backgroundPainter, backgroundExposedSceneRect); d->backgroundPixmapExposed = QRegion(); } -- cgit v0.12