Gestures in GraphicsView do not require a viewport to subscribe to gestures.

When a graphicsitem subscribes to a gesture the viewport is implicitly
subscribed to it as well.

Task-number: QTBUG-9849
Reviewed-by: Olivier Goffart
Reviewed-by: Mikko Harju

1 files changed, 3 insertions, 0 deletions

diff --git a/src/gui/graphicsview/qgraphicsscene_p.h b/src/gui/graphicsview/qgraphicsscene_p.h
index 77bf45074f..8ad2a0ac8a 100644
--- a/src/gui/graphicsview/qgraphicsscene_p.h
+++ b/src/gui/graphicsview/qgraphicsscene_p.h
@@ -302,6 +302,7 @@ public:
     QHash<QGraphicsObject *, QSet<QGesture *> > cachedItemGestures;
     QHash<QGraphicsObject *, QSet<QGesture *> > cachedAlreadyDeliveredGestures;
     QHash<QGesture *, QGraphicsObject *> gestureTargets;
+    QHash<Qt::GestureType, int>  grabbedGestures;
     void gestureEventHandler(QGestureEvent *event);
     void gestureTargetsAtHotSpots(const QSet<QGesture *> &gestures,
                            Qt::GestureFlag flag,
@@ -310,6 +311,8 @@ public:
                            QSet<QGesture *> *normal = 0,
                            QSet<QGesture *> *conflicts = 0);
     void cancelGesturesForChildren(QGesture *original);
+    void grabGesture(QGraphicsItem *, Qt::GestureType gesture);
+    void ungrabGesture(QGraphicsItem *, Qt::GestureType gesture);
 
     void updateInputMethodSensitivityInViews();