Added support to pinch multitouch gesture.

svn path=/trunk/KDE/kdelibs/; revision=1094411

private/animablegraphicswebview.cpp

@@ -21,6 +21,8 @@
 #include "animablegraphicswebview_p.h"
 
 #include <QtGui/QApplication>
+#include <QGestureEvent>
+#include <QPinchGesture>
 #include <QtWebKit/QWebFrame>
 
 #include <kwebpage.h>
@@ -152,5 +154,23 @@ void AnimableGraphicsWebView::wheelEvent(QGraphicsSceneWheelEvent *event)
     event->setAccepted(!m_dragToScroll);
 }
 
+bool AnimableGraphicsWebView::event(QEvent * event)
+{
+    if (event->type() == QEvent::Gesture) {
+        gestureEvent(static_cast<QGestureEvent*>(event));
+            return true;
+    }
+
+    return KGraphicsWebView::event(event);
+}
+
+bool AnimableGraphicsWebView::gestureEvent(QGestureEvent *event)
+{
+    if (QGesture *pinch = event->gesture(Qt::PinchGesture)){
+        QPinchGesture *pinchGesture = static_cast<QPinchGesture *>(pinch);
+        setZoomFactor(zoomFactor() * pinchGesture->scaleFactor());
+    }
+}
+
 #include "animablegraphicswebview_p.moc"
 

private/animablegraphicswebview_p.h

@@ -29,6 +29,8 @@
 
 #include <kgraphicswebview.h>
 
+class QGestureEvent;
+
 namespace Plasma
 {
 
@@ -51,12 +53,14 @@ public:
     bool dragToScroll() const;
 
 protected:
+    bool event(QEvent * event);
     void mouseMoveEvent(QGraphicsSceneMouseEvent *event);
     void mousePressEvent(QGraphicsSceneMouseEvent *event);
     void mouseReleaseEvent(QGraphicsSceneMouseEvent *event);
     void wheelEvent(QGraphicsSceneWheelEvent *event);
 
 private:
+    bool gestureEvent(QGestureEvent *event);
     bool m_dragToScroll;
     QPointF m_lastScrollPosition;
 };