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/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the examples of the Qt Quick CL 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 QtQuick.Controls 1.0
import quickcl.qt.io 1.0
Item {
Rectangle {
id: orig
width: parent.width / 2 - 4
height: parent.height
border.color: "magenta"
border.width: 4
Item {
id: src
anchors.fill: parent
layer.enabled: true
Image {
anchors.fill: parent
anchors.margins: 4
source: "image.png"
}
Image {
source: "qt.png"
width: 100
height: 100
smooth: true
SequentialAnimation on scale {
loops: Animation.Infinite
NumberAnimation { from: 1; to: 8; duration: 2000; easing.type: Easing.OutBounce }
PauseAnimation { duration: 2000 }
NumberAnimation { from: 8; to: 1; duration: 2000; easing.type: Easing.OutBounce }
PauseAnimation { duration: 2000 }
}
NumberAnimation on rotation { from: 0; to: 360; duration: 2000; loops: Animation.Infinite }
anchors.centerIn: parent
}
}
}
Rectangle {
width: parent.width / 2 - 4
height: parent.height
anchors.left: orig.right
anchors.leftMargin: 4
border.color: "magenta"
border.width: 4
CLItem {
id: clItem
source: src
anchors.fill: parent
anchors.margins: 4
onNewResultsAvailable: {
var maxValue = rectRoot.height - topText.y - topText.height;
for (var i = 0; i < 256; ++i)
rep.itemAt(i).height = Math.max(1, Math.min(result.get(i) / scaleFactor.value, maxValue))
}
Item {
anchors.fill: parent
Row {
anchors.fill: parent
id: rectRoot
Repeater {
id: rep
// It might be tempting to use clItem.result as the
// model. This would however result in a serious
// slowdown due to dropping and adding 256 new
// rectangles on every update.
model: 256
Rectangle {
width: parent ? parent.width / rep.count : 0
height: 0
y: parent ? parent.height - height : 0
color: "black"
}
}
}
}
}
Text {
id: topText
font.pointSize: 16
text: "Histogram calculated on the GPU with OpenCL (scale: " + Math.round(scaleFactor.value) + ")"
color: "green"
x: 10
y: 10
}
Slider {
id: scaleFactor
x: 10
anchors.top: topText.bottom
anchors.bottom: parent.bottom
anchors.margins: 10
minimumValue: 1
maximumValue: 1024
value: 8
orientation: Qt.Vertical
}
}
}
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