QML Multitouch on Ubuntu 16.04 not working?
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I would like to use the PinchArea on Ubuntu 16.04 and it doesn't seem to work. What I did so far:
- Tried PinchArea and Multitouch example from Qt, both not working on Ubuntu 16.04 (Qt 5.6, gcc5.4)
- Same applications work on Windows 7 (Qt5.6, mingw)
- Pinch zoom works on Ubuntu 16.04 for image viewer
- Geisview shows gesture events when I am touching in the qml application, however no pinch event arises in qml
- Flickable from qml does work (single touch)
- tried different touch screens from different manufacturers, all do not trigger the pinch/multitouch event
- installed recommended driver from manufacturer, but no effect
Here is the example PinchArea code from Qt, which I am using:
import QtQuick 2.6 import QtQuick.Window 2.2 Window { visible: true width: 640 height: 360 title: qsTr("Hello World") Rectangle { id: test width: 640 height: 360 color: "gray" Flickable { id: flick anchors.fill: parent contentWidth: 500 contentHeight: 500 PinchArea { width: Math.max(flick.contentWidth, flick.width) height: Math.max(flick.contentHeight, flick.height) property real initialWidth property real initialHeight onPinchStarted: { console.log("pinched!") test.color = "red" flick.interactive = false initialWidth = flick.contentWidth initialHeight = flick.contentHeight } onPinchUpdated: { console.log("pinched2!") test.color = "red" // adjust content pos due to drag flick.contentX += pinch.previousCenter.x - pinch.center.x flick.contentY += pinch.previousCenter.y - pinch.center.y // resize content flick.resizeContent(initialWidth * pinch.scale, initialHeight * pinch.scale, pinch.center) } onPinchFinished: { console.log("pinched3!") // Move its content within bounds. flick.returnToBounds() flick.interactive = true test.color = "red" } Rectangle { width: flick.contentWidth height: flick.contentHeight color: "white" Image { anchors.fill: parent source: "image.png" MouseArea { anchors.fill: parent onDoubleClicked: { console.log("teeest") test.color = "red" flick.contentWidth = 500 flick.contentHeight = 500 } } } } } } } }
Am I missing something or do you have any ideas how to fix this issue? Any help would be highly appreciated.
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Works with pre-built Qt version. Has to be build parameter dependant.