On Tue, 21 Jun 2011 02:50:45 ext Adriano Rezende wrote: > 2011/6/14 Alan Alpert <[email protected]<mailto:[email protected]>> > > On Tue, 14 Jun 2011 23:22:11 ext Adriano Rezende wrote: > > Sorry, I pressed send by mistake :) > > In the flickable use case, it's the only way I can see to handle the > > mouse steal. It could be declarative of course, but in that case it > > would be very specific to a flickable behavior. > > What is this 'flickable' use case specifically, and how is it not handled > by the new approach? > > The flickable use case is not handled by the old approach neither by the > new one (considering what you said). It's a use case where you just need > to filter the press/move/release events from other items, stealing the > event when a drag movement is recognized. Consider the current QML > Flickable item with a button inside; the button shows a highlight on > press, but as soon as the flickable recognizes a drag movement, it will > steal the mouse event from the button, avoiding the release and the click > events. Ex.: > > Flickable { > width: 400 > height: 400 > contentHeight: 1000 > > Rectangle { > width: 1000 > height: 1000 > color: mouseArea.pressed ? "red" : "blue" > > MouseArea { > id: mouseArea > anchors.fill: parent > onPressed: print("pressed") > onClicked: print("clicked") // avoided if dragging > } > } > } > > Simulating that behavior using a mouse filter would be like below: > > MouseFilter { > width: 400 > height: 400 > > onPressed: print("press filtered") > onPositionChanged: // if dragging, steal mouse > > MouseArea { > z: -1 > anchors.fill: parent > onPressed: print("pressed") > onClicked: print("clicked") // avoided if dragging > } > } > > I thought the new approach would behave like above, which is not the case. > In the end a C++ extension is still needed to handle that, right? >
Yes. I believe that this use case is more touch-specific, and should be considered in the TouchArea research. That would be a better place to solve it. -- Alan Alpert Senior Engineer Nokia, Qt Development Frameworks _______________________________________________ Qt-qml mailing list [email protected] http://lists.qt.nokia.com/mailman/listinfo/qt-qml
