qtdeclarative/tests/manual/pointer/pinchHandler.qml

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** This file is part of the manual tests of the Qt Toolkit.
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import QtQuick 2.8
import Qt.labs.handlers 1.0

Rectangle {
    width: 1024; height: 600
    color: "#eee"
    Rectangle {
        id: root
        color: "black"
        width: 900
        height: 600
        x: 100

        Rectangle {
            width: 400
            height: 300
            color: "lightsteelblue"
            antialiasing: true

            Text {
                anchors.centerIn: parent
                text: "Pinch with 2 fingers to scale, rotate and translate"
                    + "\ncurrent rotation: " + pinch2.rotation.toFixed(1)
                    + "\nscale: " + pinch2.scale.toFixed(1)
                    + "\ntranslation: " + pinch2.translation
            }

            PinchHandler {
                id: pinch2
                objectName: "2-finger pinch"
                minimumRotation: -45
                maximumRotation: 45
                minimumScale: 0.5
                maximumScale: 3
                minimumX: 0
                maximumX: 600
                pointDistanceThreshold: 150
            }
        }

        Rectangle {
            x: 500
            width: 400
            height: 300
            color: "wheat"
            antialiasing: true

            Text {
                anchors.centerIn: parent
                text: "Pinch with 3 fingers to scale, rotate and translate\nDrag with 1 finger"
                    + "\ncurrent rotation " + pinch3.rotation.toFixed(1)
                    + "\nscale: " + pinch3.scale.toFixed(1)
                    + "\ntranslation: " + pinch3.translation
            }
            DragHandler { objectName: "DragHandler" }

            PinchHandler {
                id: pinch3
                objectName: "3-finger pinch"
                requiredPointCount: 3
                minimumScale: 0.1
                maximumScale: 10
            }
        }

    }
    Rectangle {
        id: centroidIndicator
        property QtObject pincher: pinch2.active ? pinch2 : pinch3
        x: pincher.centroid.x
        y: pincher.centroid.y
        z: 1
        visible: pincher.active
        radius: width / 2
        width: 10
        height: width
        color: "red"
    }
}