burstandpulse.qml Example File

/****************************************************************************
**
** Copyright (C) 2017 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** BSD License Usage
** Alternatively, 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 The Qt Company Ltd 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
import QtQuick.Particles 2.0
Rectangle {
    width: 320
    height: 480
    color: "black"
    property bool lastWasPulse: false
    Timer {
        interval: 3500
        triggeredOnStart: true
        running: true
        repeat: true
        onTriggered: {
            if (lastWasPulse) {
                burstEmitter.burst(500);
                lastWasPulse = false;
            } else {
                pulseEmitter.pulse(500);
                lastWasPulse = true;
            }
        }
    }
    ParticleSystem {
        id: particles
        anchors.fill: parent
        ImageParticle {
            source: "qrc:///particleresources/star.png"
            alpha: 0
            colorVariation: 0.6
        }
        Emitter {
            id: burstEmitter
            x: parent.width/2
            y: parent.height/3
            emitRate: 1000
            lifeSpan: 2000
            enabled: false
            velocity: AngleDirection{magnitude: 64; angleVariation: 360}
            size: 24
            sizeVariation: 8
            Text {
                anchors.centerIn: parent
                color: "white"
                font.pixelSize: 18
                text: "Burst"
            }
        }
        Emitter {
            id: pulseEmitter
            x: parent.width/2
            y: 2*parent.height/3
            emitRate: 1000
            lifeSpan: 2000
            enabled: false
            velocity: AngleDirection{magnitude: 64; angleVariation: 360}
            size: 24
            sizeVariation: 8
            Text {
                anchors.centerIn: parent
                color: "white"
                font.pixelSize: 18
                text: "Pulse"
            }
        }
    }
}