diff options
| -rw-r--r-- | src/widgets/kernel/qwidgetbackingstore.cpp | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/src/widgets/kernel/qwidgetbackingstore.cpp b/src/widgets/kernel/qwidgetbackingstore.cpp index 17187002ca..3f7f9291b6 100644 --- a/src/widgets/kernel/qwidgetbackingstore.cpp +++ b/src/widgets/kernel/qwidgetbackingstore.cpp @@ -641,7 +641,11 @@ void QWidgetBackingStore::markDirty(const QRect &rect, QWidget *widget, const QRect widgetRect = widget->d_func()->effectiveRectFor(rect); - const QRect translatedRect(widgetRect.translated(widget->mapTo(tlw, QPoint()))); + QRect translatedRect = widgetRect; + if (widget != tlw) + translatedRect.translate(widget->mapTo(tlw, QPoint())); + // Graphics effects may exceed window size, clamp. + translatedRect = translatedRect.intersected(QRect(QPoint(), tlw->size())); if (qt_region_strictContains(dirty, translatedRect)) { if (updateTime == UpdateNow) sendUpdateRequest(tlw, updateTime); |