Qt 4.8: Bubble.qml Example File (declarative/screenorientation/Core/Bubble.qml)

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# Bubble.qml Example File

declarative/screenorientation/Core/Bubble.qml

     /****************************************************************************
     **
     ** Copyright (C) 2014 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."
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     ** $QT_END_LICENSE$
     **
     ****************************************************************************/

     import QtQuick 1.0

     Rectangle {
         property bool rising: false
         property bool verticalRise: true
         property real xAttractor: 0
         property real yAttractor: 0

         width: 5 + 10*Math.random()
         height: width
         radius: Math.floor(width/2)-1
         property real amountOfGray: Math.random()
         color: Qt.rgba(amountOfGray,amountOfGray,amountOfGray,1)

         y: (rising && verticalRise) ? yAttractor : Math.random()*(main.inPortrait ? main.baseHeight : main.baseWidth)
         x: (rising && !verticalRise) ? xAttractor : Math.random()*(main.inPortrait ? main.baseWidth : main.baseHeight)
         Behavior on x {
             id: xBehavior
             SmoothedAnimation {
                 velocity: 100+Math.random()*100
             }
         }
         Behavior on y {
             id: yBehavior
             SmoothedAnimation {
                 velocity: 100+Math.random()*100
             }
         }
         Timer {
            interval: 80+Math.random()*40
             repeat: true
             running: true
             onTriggered: {
                 if (rising) {
                     if (x > main.width || x < 0) {
                         xBehavior.enabled = false;
                         rising = false;
                         xBehavior.enabled = true;
                         rising = true;
                     }
                     if (y > main.height || y < 0) {
                         yBehavior.enabled = false;
                         rising = false;
                         yBehavior.enabled = true;
                         rising = true;
                     }
                 }
             }
         }
     }