87 lines
2.4 KiB
QML
87 lines
2.4 KiB
QML
// Copyright (C) 2021 The Qt Company Ltd.
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// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
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import QtQuick
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Item {
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width: 640
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height: 480
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Rectangle {
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id: map
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color: "aqua"
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x: (parent.width - width) / 2
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y: (parent.height - height) / 2
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width: image.width
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height: image.height
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transform: Rotation {
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id: tilt
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origin.x: width / 2
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origin.y: height / 2
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axis { x: 1; y: 0; z: 0 }
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angle: tiltHandler.persistentTranslation.y / -2
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}
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WheelHandler {
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id: wheelHandler
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objectName: "vertical mouse wheel for scaling"
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property: "scale"
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onWheel: function(event) {
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console.log("rotation " + event.angleDelta + " scaled " + rotation + " @ " + point.position + " => " + map.scale)
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}
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}
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WheelHandler {
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id: horizontalWheelHandler
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objectName: "horizontal mouse wheel for side-scrolling"
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property: "x"
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orientation: Qt.Horizontal
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}
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Image {
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id: image
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anchors.centerIn: parent
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fillMode: Image.PreserveAspectFit
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source: "images/map.svgz"
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Component.onCompleted: { width = implicitWidth; height = implicitHeight }
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}
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Text {
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anchors.centerIn: parent
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text: image.sourceSize.width + " x " + image.sourceSize.height +
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" scale " + map.scale.toFixed(2) + " active scale " + pinch.activeScale.toFixed(2)
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}
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}
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DragHandler {
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objectName: "single-point drag"
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target: map
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}
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DragHandler {
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id: tiltHandler
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objectName: "two-point tilt"
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minimumPointCount: 2
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maximumPointCount: 2
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xAxis.enabled: false
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target: null
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}
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PinchHandler {
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id: pinch
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objectName: "two-point pinch"
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target: map
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minimumScale: 0.1
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maximumScale: 10
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onActiveChanged: if (!active) reRenderIfNecessary()
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grabPermissions: PinchHandler.TakeOverForbidden // don't allow takeover if pinch has started
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}
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function reRenderIfNecessary() {
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var newSourceWidth = image.sourceSize.width * pinch.scale
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var ratio = newSourceWidth / image.sourceSize.width
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if (ratio > 1.1 || ratio < 0.9)
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image.sourceSize.width = newSourceWidth
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}
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}
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