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https://bitbucket.org/smil3y/katie.git
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83 lines
3.1 KiB
QML
83 lines
3.1 KiB
QML
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/****************************************************************************
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**
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** Copyright (C) 2015 The Qt Company Ltd.
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** Contact: http://www.qt.io/licensing/
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**
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** This file is part of the QML Shaders plugin of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and The Qt Company. For licensing terms
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** and conditions see http://www.qt.io/terms-conditions. For further
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** information use the contact form at http://www.qt.io/contact-us.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 or version 3 as published by the Free
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** Software Foundation and appearing in the file LICENSE.LGPLv21 and
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** LICENSE.LGPLv3 included in the packaging of this file. Please review the
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** following information to ensure the GNU Lesser General Public License
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** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
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** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** As a special exception, The Qt Company gives you certain additional
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** rights. These rights are described in The Qt Company LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 3.0 as published by the Free Software
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** Foundation and appearing in the file LICENSE.GPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU General Public License version 3.0 requirements will be
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** met: http://www.gnu.org/copyleft/gpl.html.
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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import QtQuick 1.0
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import Qt.labs.shaders 1.0
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Item {
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id: gaussianDropShadow
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property color shadowColor: Qt.rgba(0.5, 0.5, 0.5, 1.0)
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property variant source: 0
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property real radius: 8
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property real deviation: Math.sqrt(-((radius+1) * (radius+1)) / (2 * Math.log(1.0 / 255.0)))
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property bool live: true
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GaussianBlur {
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id: blur
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anchors.fill: parent
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radius: gaussianDropShadow.radius
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deviation: gaussianDropShadow.deviation
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source: gaussianDropShadow.source
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live: gaussianDropShadow.live
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}
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ShaderEffectItem {
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id: shadow
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property color shadowColor: gaussianDropShadow.shadowColor
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property variant source: ShaderEffectSource { sourceItem: blur; hideSource: true }
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anchors.fill: parent
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fragmentShader:
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"
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varying mediump vec2 qt_TexCoord0;
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uniform sampler2D source;
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uniform lowp vec4 shadowColor;
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void main() {
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lowp vec4 sourceColor = texture2D(source, qt_TexCoord0);
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gl_FragColor = mix(vec4(0), shadowColor, sourceColor.a);
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}
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"
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}
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}
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