61 lines
2.3 KiB
QML
61 lines
2.3 KiB
QML
// Copyright (C) 2017 The Qt Company Ltd.
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// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
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import QtQuick 2.12
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import "content"
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Rectangle {
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width: 1024; height: 600
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color: "beige"
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objectName: "beige root"
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function getTransformationDetails(item, pinchhandler) {
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return "scale:" + pinchhandler.scale.toFixed(2)
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+ " rotation:" + pinchhandler.rotation.toFixed(2)
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+ " translation:" + "(" + pinchhandler.translation.x.toFixed(2) + "," + pinchhandler.translation.y.toFixed(2) + ")"
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}
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Rectangle {
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id: container
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objectName: "container rect"
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width: 600
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height: 500
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color: pinch3.active ? "red" : "black"
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antialiasing: true
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Loader {
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source: "../touch/mpta-crosshairs.qml"
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anchors.fill: parent
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anchors.margins: 2
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}
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Item {
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anchors.fill: parent
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// In order for PinchHandler to get a chance to take a passive grab, it has to get the touchpoints first.
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// In order to get the touchpoints first, it has to be on top of the Z order: i.e. come last in paintOrderChildItems().
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// This is the opposite situation as with filtersChildMouseEvents: e.g. PinchArea would have wanted to be the parent,
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// if it even knew that trick (which it doesn't).
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PinchHandler {
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id: pinch3
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objectName: "3-finger pinch"
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target: container
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minimumPointCount: 3
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minimumScale: 0.1
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maximumScale: 10
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onActiveChanged: if (!active) fling.restart(centroid.velocity)
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}
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DragHandler {
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id: dragHandler
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objectName: "DragHandler"
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target: container
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acceptedModifiers: Qt.MetaModifier
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onActiveChanged: if (!active) fling.restart(point.velocity)
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}
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}
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MomentumAnimation { id: fling; target: container }
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}
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Text {
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anchors.bottom: parent.bottom
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text: pinch3.active ? getTransformationDetails(container, pinch3) :
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"Pinch with 3 fingers to scale, rotate and translate\nHold down Meta to drag with one finger or mouse"
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}
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}
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