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/****************************************************************************
**
** Copyright (C) 2014 Gunnar Sletta <gunnar@sletta.org>
** Contact: http://www.qt.io/licensing/
**
** This file is part of the documentation 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 The Qt Company Ltd 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 2.2
Rectangle {
id: root
width: 320
height: 320
gradient: Gradient {
GradientStop { position: 0; color: "steelblue" }
GradientStop { position: 1; color: "black" }
}
property real cx: width / 2;
property real cy: height / 2;
property real boxSize: root.width * 0.2;
property real radius: width / 4;
//! [1]
Item {
id: layerRoot
layer.enabled: true
layer.effect: ShaderEffect {
fragmentShader: "
uniform lowp sampler2D source; // this item
uniform lowp float qt_Opacity; // inherited opacity of this item
varying highp vec2 qt_TexCoord0;
void main() {
lowp vec4 p = texture2D(source, qt_TexCoord0);
lowp float g = dot(p.xyz, vec3(0.344, 0.5, 0.156));
gl_FragColor = vec4(g, g, g, p.a) * qt_Opacity;
}"
}
//! [1]
anchors.fill: parent
Repeater {
id: repeater
model: 200
Rectangle {
id: box
property real t: index / (repeater.model - 1);
width: 0
height: 0
x: root.cx - Math.sin(Math.PI * 2 * t) * root.radius;
y: root.cy - Math.cos(Math.PI * 2 * t) * root.radius;
Rectangle {
width: root.boxSize
height: root.boxSize
anchors.centerIn: parent
color: Qt.hsla(box.t, 0.5, 0.5);
border.color: "white"
antialiasing: true;
rotation: box.t * 360;
// RotationAnimator on rotation {
// from: box.t * 360;
// to: box.t * 360 + 360;
// duration: 7592;
// loops: Animation.Infinite
// }
}
}
}
}
}
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