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/****************************************************************************
**
** Copyright (C) 2015 Jolla Ltd, author: <gunnar.sletta@jollamobile.com>
** 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 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 QtGraphicalEffects.private 1.0
import QtGraphicalEffects 1.0
Item {
id: root
property variant source
property real radius: Math.floor(samples / 2)
property int samples: 9
property color color: "black"
property real horizontalOffset: 0
property real verticalOffset: 0
property real spread: 0.0
property bool cached: false
property bool transparentBorder: true
GaussianBlur {
id: blur
width: parent.width
height: parent.height
x: Math.round(horizontalOffset)
y: Math.round(verticalOffset)
source: root.source
radius: Math.min(Math.floor(root.samples / 2), root.radius)
samples: root.samples
_thickness: root.spread
transparentBorder: root.transparentBorder
_color: root.color;
_alphaOnly: true
// ignoreDevicePixelRatio: root.ignoreDevicePixelRatio
ShaderEffect {
x: blur._outputRect.x - parent.x
y: blur._outputRect.y - parent.y
width: transparentBorder ? blur._outputRect.width : blur.width
height: transparentBorder ? blur._outputRect.height : blur.height
property variant source: blur._output;
}
}
ShaderEffectSource {
id: cacheItem
x: -blur._kernelRadius + horizontalOffset
y: -blur._kernelRadius + verticalOffset
width: blur.width + 2 * blur._kernelRadius
height: blur.height + 2 * blur._kernelRadius
visible: root.cached
smooth: true
sourceRect: Qt.rect(-blur._kernelRadius, -blur._kernelRadius, width, height);
sourceItem: blur
hideSource: visible
}
}
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