From 2600fd42117913b427d07e510724b0ea5e355205 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 --- 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 3bb40fb..1569078 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