PinchArea
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I am trying to use PinchArea (Qt Quick 1.1) : I have the following :
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import QtQuick 1.1Rectangle {
width: 300
height: 200
color:"blue"
id :mainMTPinchArea { property int xpoint property int ypoint property int pinchscale property int pinchrotation id: pinchy enabled: true anchors.fill: parent pinch.dragAxis: Pinch.XandYAxis pinch.minimumScale: 0.01 pinch.maximumScale: 20 onPinchUpdated: { mainMT.x+=-mapToItem(mainMT.parent,pinch.previousCenter.x,pinch.previousCenter.y).x+mapToItem(mainMT.parent,pinch.center.x,pinch.center.y).x; mainMT.y+=-mapToItem(mainMT.parent,pinch.previousCenter.x,pinch.previousCenter.y).y+mapToItem(mainMT.parent,pinch.center.x,pinch.center.y).y; mainMT.scale-=pinch.previousScale-pinch.scale; mainMT.rotation+=pinch.previousAngle-pinch.angle; } }
}
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It works well except than it's difficult to move the item with two fingers : when you do that, there is rotation that comes with ...
Is there a way to enable single touch to move item instead of double touch to distinct move object, and scale/rotation ? -
A couple things you could try:
- filtering the data in onPinchUpdated (e.g. only change the rotation when the difference in angle passes a certain threshold)
- use a MouseArea for the single finger dragging (from memory MouseArea and PinchArea should work well together)