Avoid emitting release when the mouse is ungrabbed

Added an onCanceled signal to mouse area, which is triggered when the
mouse area rejects the event (propagates to the nearest
mouse area beneath) or some other element steals the mouse grab
(flickable, for example).

Task-number: QTBUG-10162
Reviewed-by: Michael Brasser

1 files changed, 1 insertions, 0 deletions

diff --git a/src/declarative/graphicsitems/qdeclarativemousearea_p.h b/src/declarative/graphicsitems/qdeclarativemousearea_p.h
index e3f523b..df77ac6 100644
--- a/src/declarative/graphicsitems/qdeclarativemousearea_p.h
+++ b/src/declarative/graphicsitems/qdeclarativemousearea_p.h
@@ -163,6 +163,7 @@ Q_SIGNALS:
     void doubleClicked(QDeclarativeMouseEvent *mouse);
     void entered();
     void exited();
+    void canceled();
 
 protected:
     void setHovered(bool);