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Diffstat (limited to 'examples/quick/pointerhandlers/flingAnimation.qml')
-rw-r--r-- | examples/quick/pointerhandlers/flingAnimation.qml | 148 |
1 files changed, 148 insertions, 0 deletions
diff --git a/examples/quick/pointerhandlers/flingAnimation.qml b/examples/quick/pointerhandlers/flingAnimation.qml new file mode 100644 index 0000000000..a2a6a0acd1 --- /dev/null +++ b/examples/quick/pointerhandlers/flingAnimation.qml @@ -0,0 +1,148 @@ +/**************************************************************************** +** +** 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 2.12 +import "components" + +Rectangle { + id: root + width: 640 + height: 480 + color: "black" + + Repeater { + model: 2 + + Image { + id: ball + objectName: "ball" + index + source: "images/redball.png" + property real homeX: 200 + index * 200 + property real homeY: 200 + width: 80; height: 80; x: homeX; y: 200 + + Text { + anchors.centerIn: parent + color: "white" + text: momentum.velocity.x.toFixed(2) + "," + momentum.velocity.y.toFixed(2) + } + + SequentialAnimation { + id: anim + + function restart(vel) { + stop() + momentum.velocity = vel + start() + } + + MomentumAnimation { id: momentum; target: ball } + + PauseAnimation { duration: 500 } + + ParallelAnimation { + id: ballReturn + NumberAnimation { + target: ball + property: "x" + to: homeX + duration: 1000 + easing.period: 50 + easing.type: Easing.OutElastic + } + NumberAnimation { + target: ball + property: "y" + to: homeY + duration: 1000 + easing.type: Easing.OutElastic + } + } + } + + DragHandler { + id: dragHandler + objectName: "dragHandler" + index + onActiveChanged: { + if (!active) + anim.restart(centroid.velocity) + } + } + Rectangle { + visible: dragHandler.active + anchors.fill: parent + anchors.margins: -5 + radius: width / 2 + opacity: 0.25 + } + + Rectangle { + visible: width > 0 + width: dragHandler.centroid.velocity.length() / 10 + height: 2 + x: ball.width / 2 + y: ball.height / 2 + z: -1 + rotation: Math.atan2(dragHandler.centroid.velocity.y, dragHandler.centroid.velocity.x) * 180 / Math.PI + transformOrigin: Item.BottomLeft + antialiasing: true + + Image { + source: "images/arrowhead.png" + anchors.right: parent.right + anchors.verticalCenter: parent.verticalCenter + width: 16 + height: 12 + antialiasing: true + } + } + } + } +} |