diff options
| -rw-r--r-- | examples/widgets/widgets/tablet/tabletcanvas.cpp | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/examples/widgets/widgets/tablet/tabletcanvas.cpp b/examples/widgets/widgets/tablet/tabletcanvas.cpp index 3ff26d2ec8..bfcc84e182 100644 --- a/examples/widgets/widgets/tablet/tabletcanvas.cpp +++ b/examples/widgets/widgets/tablet/tabletcanvas.cpp @@ -148,12 +148,14 @@ void TabletCanvas::initPixmap() m_pixmap = newPixmap; } -void TabletCanvas::paintEvent(QPaintEvent *) +void TabletCanvas::paintEvent(QPaintEvent *event) { if (m_pixmap.isNull()) initPixmap(); QPainter painter(this); - painter.drawPixmap(0, 0, m_pixmap); + QRect pixmapPortion = QRect(event->rect().topLeft() * devicePixelRatioF(), + event->rect().size() * devicePixelRatioF()); + painter.drawPixmap(event->rect().topLeft(), m_pixmap, pixmapPortion); } //! [4] |