diff options
Diffstat (limited to 'src/gui/graphicsview')
-rw-r--r-- | src/gui/graphicsview/qgraphicsitem.cpp | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/src/gui/graphicsview/qgraphicsitem.cpp b/src/gui/graphicsview/qgraphicsitem.cpp index 9d7354a..b3e1701 100644 --- a/src/gui/graphicsview/qgraphicsitem.cpp +++ b/src/gui/graphicsview/qgraphicsitem.cpp @@ -5687,18 +5687,20 @@ void QGraphicsItem::scroll(qreal dx, qreal dy, const QRectF &rect) return; } - // Find pixmap in cache, then remove to avoid deep copy when modifying.s + // Find pixmap in cache. QPixmap cachedPixmap; if (!QPixmapCache::find(cache->key, &cachedPixmap)) { update(rect); return; } - QPixmapCache::remove(cache->key); QRect scrollRect = (rect.isNull() ? boundingRect() : rect).toAlignedRect(); if (!scrollRect.intersects(cache->boundingRect)) return; // Nothing to scroll. + // Remove from cache to avoid deep copy when modifying. + QPixmapCache::remove(cache->key); + QRegion exposed; cachedPixmap.scroll(dx, dy, scrollRect.translated(-cache->boundingRect.topLeft()), &exposed); |