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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the examples of Qt for Device Creation.
**
** $QT_BEGIN_LICENSE:BSD$
** 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
Item {
id: root
property alias text: buttonTextItem.text
property bool effectsOn: true
signal clicked
width: buttonBackgroundImage.width
height: buttonBackgroundImage.height
scale: mouseArea.pressed && mouseArea.containsMouse ? 0.9 : 1.0
opacity: mouseArea.pressed && mouseArea.containsMouse ? 0.8 : 1.0
Behavior on scale {
NumberAnimation { duration: 150; easing.type: Easing.OutQuad }
}
Behavior on opacity {
NumberAnimation { duration: 150; easing.type: Easing.OutQuad }
}
BorderImage {
id: buttonBackgroundImage
source: "images/button.png"
border.left: 24
border.right: 24
border.top: 20
border.bottom: 20
width: 140
}
// Stars effect
ParticleSystem {
id: particleSystem
anchors.fill: buttonBackgroundImage
running: root.effectsOn
ImageParticle {
source: "images/star.png"
rotationVariation: 180
color:"#ffffff"
}
Emitter {
width: parent.width
height: 8
emitRate: 16
lifeSpan: 2000
size: 32
sizeVariation: 16
endSize: 8
velocity: PointDirection{ y: 20; x:-2; xVariation: 5; yVariation: 10 }
}
Turbulence {
width: parent.width
height: (parent.height / 2)
strength: 8
}
}
// Button background
ShaderEffectSource {
id: shaderSource
anchors.fill: buttonBackgroundImage
sourceItem: buttonBackgroundImage
hideSource: true
visible: false
}
// Particles
ShaderEffectSource {
id: shaderSource2
anchors.fill: particleSystem
sourceItem: particleSystem
hideSource: true
visible: false
}
// Mask particles inside the button
ShaderEffect {
id: shaderEffectItem
anchors.fill: shaderSource
property variant source: shaderSource
property variant source2: shaderSource2
fragmentShader: "
uniform sampler2D source;
uniform sampler2D source2;
uniform lowp float qt_Opacity;
varying highp vec2 qt_TexCoord0;
void main() {
lowp vec4 pix = texture2D(source, qt_TexCoord0);
lowp vec4 pix2 = texture2D(source2, qt_TexCoord0);
gl_FragColor = qt_Opacity * (pix + pix.a * pix2);
}"
}
Text {
id: buttonTextItem
anchors.centerIn: parent
color: "#000000"
font.pixelSize: 28
}
MouseArea {
id: mouseArea
anchors.fill: parent
anchors.margins: -16
onClicked: {
root.clicked();
}
}
}
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