Use a pixmap instead of an image in the tablet example

The transformations QImage->QPixmap are killing the performance of the
tablet example. This is noticeable because of the number of events sent
by the tablet (painting MUST be fast in tabletEvent()).

Reviewed-by: David Boddie

1 files changed, 4 insertions, 4 deletions

diff --git a/examples/widgets/tablet/tabletcanvas.h b/examples/widgets/tablet/tabletcanvas.h
index 02b8794..5a2fb1d 100644
--- a/examples/widgets/tablet/tabletcanvas.h
+++ b/examples/widgets/tablet/tabletcanvas.h
@@ -43,7 +43,7 @@
 #define TABLETCANVAS_H
 
 #include <QWidget>
-#include <QImage>
+#include <QPixmap>
 #include <QPoint>
 #include <QTabletEvent>
 #include <QColor>
@@ -92,8 +92,8 @@ protected:
     void resizeEvent(QResizeEvent *event);
 
 private:
-    void initImage();
-    void paintImage(QPainter &painter, QTabletEvent *event);
+    void initPixmap();
+    void paintPixmap(QPainter &painter, QTabletEvent *event);
     Qt::BrushStyle brushPattern(qreal value);
     void updateBrush(QTabletEvent *event);
 
@@ -104,7 +104,7 @@ private:
     QTabletEvent::TabletDevice myTabletDevice;
     QColor myColor;
 
-    QImage image;
+    QPixmap pixmap;
     QBrush myBrush;
     QPen myPen;
     bool deviceDown;