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+/****************************************************************************
+**
+** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** 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 Digia Plc and its Subsidiary(-ies) 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 2.0
+
+Item {
+ id: cloudRoot
+ x: app.width
+ y: randomY+deltaY
+ width: app.width*0.2
+ height: width*0.4
+
+ property int duration: 20000
+ property string sourceImage: ""
+ property real deltaY: 0
+ property real randomY: app.height*0.3
+ property real amplitudeY: app.height*0.2
+
+ function start() {
+ recalculate()
+ cloudXAnimation.restart();
+ cloudYAnimation.restart();
+ }
+
+ function recalculate() {
+ cloudRoot.duration = Math.random()*15000 + 10000
+ cloudRoot.x = app.width
+ cloudRoot.randomY = Math.random()*app.height
+ cloudRoot.width = app.width*0.2
+ cloudRoot.height = cloudRoot.width*0.4
+ cloudRoot.scale = Math.random()*0.6 + 0.7
+ }
+
+ Image {
+ id: cloud
+ anchors.fill: cloudRoot
+ source: cloudRoot.sourceImage
+ }
+
+ SequentialAnimation{
+ id: cloudYAnimation
+ NumberAnimation { target: cloudRoot; property: "deltaY"; duration: cloudRoot.duration*0.3; from: 0; to:cloudRoot.amplitudeY; easing.type: Easing.InOutQuad }
+ NumberAnimation { target: cloudRoot; property: "deltaY"; duration: cloudRoot.duration*0.3; from: cloudRoot.amplitudeY; to:0; easing.type: Easing.InOutQuad }
+ running: true
+ onRunningChanged: {
+ if (!running) {
+ cloudRoot.amplitudeY = Math.random() * (app.height*0.2)
+ restart()
+ }
+ }
+ }
+
+ NumberAnimation {
+ id: cloudXAnimation
+ target: cloudRoot
+ property: "x"
+ duration: cloudRoot.duration
+ to:-cloudRoot.width
+ running: true
+
+ onRunningChanged: {
+ if (!running) {
+ recalculate()
+ restart()
+ }
+ }
+ }
+}