Qt Reference Documentation

# Link.qml Example File

demos/declarative/snake/qml/snake/content/Link.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 QtDeclarative module of the Qt Toolkit.
     **
     ** $QT_BEGIN_LICENSE:LGPL$
     ** GNU Lesser General Public License Usage
     ** This file may be used under the terms of the GNU Lesser General Public
     ** License version 2.1 as published by the Free Software Foundation and
     ** appearing in the file LICENSE.LGPL included in the packaging of this
     ** file. Please review the following information to ensure the GNU Lesser
     ** General Public License version 2.1 requirements will be met:
     ** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
     **
     ** In addition, as a special exception, Nokia gives you certain additional
     ** rights. These rights are described in the Nokia Qt LGPL Exception
     ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
     **
     ** GNU General Public License Usage
     ** Alternatively, this file may be used under the terms of the GNU General
     ** Public License version 3.0 as published by the Free Software Foundation
     ** and appearing in the file LICENSE.GPL included in the packaging of this
     ** file. Please review the following information to ensure the GNU General
     ** Public License version 3.0 requirements will be met:
     ** http://www.gnu.org/copyleft/gpl.html.
     **
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     ** Alternatively, this file may be used in accordance with the terms and
     ** conditions contained in a signed written agreement between you and Nokia.
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     **
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     ****************************************************************************/

     import QtQuick 1.0
     import Qt.labs.particles 1.0

     Item { id:link
         property bool dying: false
         property bool spawned: false
         property int type: 0
         property int row: 0
         property int column: 0
         property int rotation;

         width: 40;
         height: 40

         x: margin - 3 + gridSize * column
         y: margin - 3 + gridSize * row
         Behavior on x { NumberAnimation { duration: spawned ? heartbeatInterval : 0} }
         Behavior on y { NumberAnimation { duration: spawned ? heartbeatInterval : 0 } }

         Item {
             id: img
             anchors.fill: parent
             Image {
                 source: {
                     if(type == 1) {
                         "pics/blueStone.png";
                     } else if (type == 2) {
                         "pics/head.png";
                     } else {
                         "pics/redStone.png";
                     }
                 }

                 transform: Rotation {
                     id: actualImageRotation
                     origin.x: width/2; origin.y: height/2;
                     angle: rotation * 90
                     Behavior on angle {
                         RotationAnimation{
                             direction: RotationAnimation.Shortest
                             duration: spawned ? 200 : 0
                         }
                     }
                 }
             }

             Image {
                 source: "pics/stoneShadow.png"
             }

             opacity: 0
         }

         Particles { id: particles
             width:1; height:1; anchors.centerIn: parent;
             emissionRate: 0;
             lifeSpan: 700; lifeSpanDeviation: 600;
             angle: 0; angleDeviation: 360;
             velocity: 100; velocityDeviation:30;
             source: {
                 if(type == 1){
                     "pics/blueStar.png";
                 } else {
                     "pics/redStar.png";
                 }
             }
         }

         states: [
             State{ name: "AliveState"; when: spawned == true && dying == false
                 PropertyChanges { target: img; opacity: 1 }
             },
             State{ name: "DeathState"; when: dying == true
                 StateChangeScript { script: particles.burst(50); }
                 PropertyChanges { target: img; opacity: 0 }
             }
         ]

         transitions: [
             Transition {
                 NumberAnimation { target: img; property: "opacity"; duration: 200 }
             }
         ]

     }