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GaussianMaskedBlur.qml
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/****************************************************************************
**
** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the Qt Graphical Effects module.
**
** $QT_BEGIN_LICENSE:BSD$
** 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 Digia Plc 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 2.0
Item {
id: rootItem
property variant source
property variant maskSource
property real radius: 0.0
property int maximumRadius: 0
property bool cached: false
property bool transparentBorder: false
SourceProxy {
id: sourceProxy
input: rootItem.source
sourceRect: rootItem.transparentBorder ? Qt.rect(-1, -1, parent.width + 2.0, parent.height + 2.0) : Qt.rect(0, 0, 0, 0)
}
SourceProxy {
id: maskSourceProxy
input: rootItem.maskSource
sourceRect: rootItem.transparentBorder ? Qt.rect(-1, -1, parent.width + 2.0, parent.height + 2.0) : Qt.rect(0, 0, 0, 0)
}
ShaderEffectSource {
id: cacheItem
anchors.fill: blur
visible: rootItem.cached
smooth: true
sourceItem: blur
live: true
hideSource: visible
}
GaussianDirectionalBlur {
id: blur
x: transparentBorder ? -maximumRadius - 1: 0
y: transparentBorder ? -maximumRadius - 1: 0
width: horizontalBlur.width
height: horizontalBlur.height
horizontalStep: 0.0
verticalStep: 1.0 / parent.height
source: horizontalBlur
enableMask: true
maskSource: maskSourceProxy.output
radius: rootItem.radius
maximumRadius: rootItem.maximumRadius
transparentBorder: rootItem.transparentBorder
}
GaussianDirectionalBlur {
id: horizontalBlur
width: transparentBorder ? parent.width + 2 * maximumRadius + 2 : parent.width
height: transparentBorder ? parent.height + 2 * maximumRadius + 2 : parent.height
horizontalStep: 1.0 / parent.width
verticalStep: 0.0
source: sourceProxy.output
enableMask: true
maskSource: maskSourceProxy.output
radius: rootItem.radius
maximumRadius: rootItem.maximumRadius
transparentBorder: rootItem.transparentBorder
visible: false
}
}