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Diffstat (limited to 'examples/quick/pointerhandlers/map.qml')
-rw-r--r-- | examples/quick/pointerhandlers/map.qml | 135 |
1 files changed, 135 insertions, 0 deletions
diff --git a/examples/quick/pointerhandlers/map.qml b/examples/quick/pointerhandlers/map.qml new file mode 100644 index 0000000000..f54319f8aa --- /dev/null +++ b/examples/quick/pointerhandlers/map.qml @@ -0,0 +1,135 @@ +/**************************************************************************** +** +** Copyright (C) 2021 The Qt Company Ltd. +** Contact: https://www.qt.io/licensing/ +** +** This file is part of the examples of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:BSD$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and The Qt Company. For licensing terms +** and conditions see https://www.qt.io/terms-conditions. For further +** information use the contact form at https://www.qt.io/contact-us. +** +** BSD License Usage +** Alternatively, you may use this file under the terms of the BSD license +** as follows: +** +** "Redistribution and use in source and binary forms, with or without +** modification, are permitted provided that the following conditions are +** met: +** * Redistributions of source code must retain the above copyright +** notice, this list of conditions and the following disclaimer. +** * Redistributions in binary form must reproduce the above copyright +** notice, this list of conditions and the following disclaimer in +** the documentation and/or other materials provided with the +** distribution. +** * Neither the name of The Qt Company Ltd nor the names of its +** contributors may be used to endorse or promote products derived +** from this software without specific prior written permission. +** +** +** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +import QtQuick + +Item { + width: 640 + height: 480 + + Rectangle { + id: map + color: "aqua" + x: (parent.width - width) / 2 + y: (parent.height - height) / 2 + width: image.width + height: image.height + transform: Rotation { + id: tilt + origin.x: width / 2 + origin.y: height / 2 + axis { x: 1; y: 0; z: 0 } + angle: tiltHandler.persistentTranslation.y / -2 + } + + WheelHandler { + id: wheelHandler + objectName: "vertical mouse wheel for scaling" + property: "scale" + onWheel: function(event) { + console.log("rotation " + event.angleDelta + " scaled " + rotation + " @ " + point.position + " => " + map.scale) + } + } + + WheelHandler { + id: horizontalWheelHandler + objectName: "horizontal mouse wheel for side-scrolling" + property: "x" + orientation: Qt.Horizontal + } + + Image { + id: image + anchors.centerIn: parent + fillMode: Image.PreserveAspectFit + source: "images/map.svgz" + Component.onCompleted: { width = implicitWidth; height = implicitHeight } + } + + Text { + anchors.centerIn: parent + text: image.sourceSize.width + " x " + image.sourceSize.height + + " scale " + map.scale.toFixed(2) + " active scale " + pinch.activeScale.toFixed(2) + } + } + + DragHandler { + objectName: "single-point drag" + target: map + } + + DragHandler { + id: tiltHandler + objectName: "two-point tilt" + minimumPointCount: 2 + maximumPointCount: 2 + xAxis.enabled: false + target: null + } + + PinchHandler { + id: pinch + objectName: "two-point pinch" + target: map + minimumScale: 0.1 + maximumScale: 10 + xAxis.enabled: false + yAxis.enabled: false + onActiveChanged: if (!active) reRenderIfNecessary() + grabPermissions: PinchHandler.TakeOverForbidden // don't allow takeover if pinch has started + } + + function reRenderIfNecessary() { + var newSourceWidth = image.sourceSize.width * pinch.scale + var ratio = newSourceWidth / image.sourceSize.width + if (ratio > 1.1 || ratio < 0.9) + image.sourceSize.width = newSourceWidth + } +} |