[MeeGo-touch-dev] interception of touch events w/QGestureEvent::accept?

[Jackson, Thomas (Tom)]

> Hello,

> The mtf gestures are recognized on the level of the QGraphicsView object,
> the touch events or mouse events are redirected to gesture recognizers and
> some of them are transformed into gestures. To intercept touch events and
> mouse events that are used to recognize gesture, you would have to set up
> an event filter on QGraphicsView and swallow some of the touch events when
> you want to send your own gesture event. In that way you could send your
> custom gesture, but IMHO this is going to be hard to implement and very
> error prone.

> I would say, the latter solution is doable. You could make a transparent
> widget on top of the scene and swallow (by calling accept()) gestures that
> you want to stop. Only ignored() gestures will be propagated below your widget.

> Some of our apps do that already. Also MPannableWidget has a "glass" widget which
> handles tap&hold gesture in the way you want to implement.

> Sorry for top-posting, I had to use webaccess.

> BR,
> Michał

That's great. This is exactly the solution we are researching.  The default behavior of 
QGestureEvent::accept is "Unwanted gestures may be propagated to the parent widget" so this 
is ideal.  Thanks for the post!

-Tom