Qt Reference Documentation

# color-animation.qml Example File

declarative/animation/basics/color-animation/qml/color-animation/color-animation.qml

     /****************************************************************************
     **
     ** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
     ** All rights reserved.
     ** Contact: Nokia Corporation (qt-info@nokia.com)
     **
     ** 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 Nokia Corporation 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 1.0
     import Qt.labs.particles 1.0

     Item {
         id: window
         width: 640; height: 480

         // Let's draw the sky...
         Rectangle {
             anchors { left: parent.left; top: parent.top; right: parent.right; bottom: parent.verticalCenter }
             gradient: Gradient {
                 GradientStop {
                     position: 0.0
                     SequentialAnimation on color {
                         loops: Animation.Infinite
                         ColorAnimation { from: "DeepSkyBlue"; to: "#0E1533"; duration: 5000 }
                         ColorAnimation { from: "#0E1533"; to: "DeepSkyBlue"; duration: 5000 }
                     }
                 }
                 GradientStop {
                     position: 1.0
                     SequentialAnimation on color {
                         loops: Animation.Infinite
                         ColorAnimation { from: "SkyBlue"; to: "#437284"; duration: 5000 }
                         ColorAnimation { from: "#437284"; to: "SkyBlue"; duration: 5000 }
                     }
                 }
             }
         }

         // the sun, moon, and stars
         Item {
             width: parent.width; height: 2 * parent.height
             NumberAnimation on rotation { from: 0; to: 360; duration: 10000; loops: Animation.Infinite }
             Image {
                 source: "images/sun.png"; y: 10; anchors.horizontalCenter: parent.horizontalCenter
                 rotation: -3 * parent.rotation
             }
             Image {
                 source: "images/moon.png"; y: parent.height - 74; anchors.horizontalCenter: parent.horizontalCenter
                 rotation: -parent.rotation
             }

             Particles {
                 x: 0; y: parent.height/2; width: parent.width; height: parent.height/2
                 source: "images/star.png"; angleDeviation: 360; velocity: 0
                 velocityDeviation: 0; count: parent.width / 10; fadeInDuration: 2800
                 SequentialAnimation on opacity {
                     loops: Animation.Infinite
                     NumberAnimation { from: 0; to: 1; duration: 5000 }
                     NumberAnimation { from: 1; to: 0; duration: 5000 }
                 }
             }

         }

         // ...and the ground.
         Rectangle {
             anchors { left: parent.left; top: parent.verticalCenter; right: parent.right; bottom: parent.bottom }
             gradient: Gradient {
                 GradientStop {
                     position: 0.0
                     SequentialAnimation on color {
                         loops: Animation.Infinite
                         ColorAnimation { from: "ForestGreen"; to: "#001600"; duration: 5000 }
                         ColorAnimation { from: "#001600"; to: "ForestGreen"; duration: 5000 }
                     }
                 }
                 GradientStop { position: 1.0; color: "DarkGreen" }
             }
         }
     }