- Qt 5.3
- Qt Quick
- Qt Quick Particles Examples - System
- startstop.qml Example File
- Qt 5.3.2 Reference Documentation

# startstop.qml Example File

particles/system/content/startstop.qml

    /****************************************************************************
    **
    ** 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
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    **     of its contributors may be used to endorse or promote products derived
    **     from this software without specific prior written permission.
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    import QtQuick 2.0
    import QtQuick.Particles 2.0

    Rectangle {
        width: 360
        height: 540
        color: "black"
        Text {
            text: "Left click to start/stop\nRight click to pause/unpause"
            color: "white"
            font.pixelSize: 24
        }
        MouseArea {
            anchors.fill: parent
            acceptedButtons: Qt.LeftButton | Qt.RightButton
            onClicked: {
                if (mouse.button == Qt.LeftButton)
                    particles.running = !particles.running
                else
                    particles.paused = !particles.paused;
            }
        }

        ParticleSystem {
            id: particles
            running: false
        }

        ImageParticle {
            anchors.fill: parent
            system: particles
            source: "qrc:///particleresources/star.png"
            sizeTable: "../../images/sparkleSize.png"
            alpha: 0
            colorVariation: 0.6
        }

        Emitter {
            anchors.fill: parent
            system: particles
            emitRate: 2000
            lifeSpan: 2000
            size: 30
            sizeVariation: 10
        }
    }