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/****************************************************************************
**
** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QML Shaders plugin 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.
**
** Other Usage
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
import QtQuick 1.0
import Qt.labs.shaders 1.0
Rectangle {
anchors.fill: parent;
color: "white"
Timer {
running: true
interval: 2000
repeat: true
onTriggered: {
if (effect.opacity > 0.9)
effect.opacity = 0.0
else if (effect.opacity < 0.5)
effect.opacity = 0.5
else if (effect.opacity < 0.9)
effect.opacity = 1.0
}
}
ShaderEffectSource {
id: theSource
sourceItem: Image { source: "image_opaque.png" }
live: false
hideSource: true
}
ShaderEffectItem {
id: effect
anchors.centerIn: parent
width: parent.width
height: parent.height
property variant source: theSource
fragmentShader: "
uniform highp float qt_Opacity;
uniform lowp sampler2D source;
varying highp vec2 qt_TexCoord0;
void main() {
gl_FragColor = vec4(texture2D(source, qt_TexCoord0).rgb, qt_Opacity);
}
"
}
Rectangle {
width: parent.width
height: 40
color: "#cc000000"
Text {
id: label
anchors.centerIn: parent
text: "Effect with opacity: " + effect.opacity
color: "white"
font.bold: true
}
}
}
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