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/****************************************************************************
**
** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, 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, Digia gives you certain additional
** rights. These rights are described in the Digia 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.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "renderthread.h"
RenderThread::RenderThread(QObject *parent)
: QThread(parent)
{
m_abort = false;
}
RenderThread::~RenderThread()
{
mutex.lock();
m_abort = true;
mutex.unlock();
wait();
}
//![processing the image (start)]
void RenderThread::processImage(const QImage &image)
{
if (image.isNull())
return;
m_image = image;
m_abort = false;
start();
}
void RenderThread::run()
{
int size = qMax(m_image.width()/20, m_image.height()/20);
for (int s = size; s > 0; --s) {
for (int c = 0; c < 400; ++c) {
//![processing the image (start)]
int x1 = qMax(0, (qrand() % m_image.width()) - s/2);
int x2 = qMin(x1 + s/2 + 1, m_image.width());
int y1 = qMax(0, (qrand() % m_image.height()) - s/2);
int y2 = qMin(y1 + s/2 + 1, m_image.height());
int n = 0;
int red = 0;
int green = 0;
int blue = 0;
for (int i = y1; i < y2; ++i) {
for (int j = x1; j < x2; ++j) {
QRgb pixel = m_image.pixel(j, i);
red += qRed(pixel);
green += qGreen(pixel);
blue += qBlue(pixel);
n += 1;
}
}
//![processing the image (finish)]
Block block(QRect(x1, y1, x2 - x1 + 1, y2 - y1 + 1),
QColor(red/n, green/n, blue/n));
emit sendBlock(block);
if (m_abort)
return;
msleep(10);
}
}
}
//![processing the image (finish)]
void RenderThread::stopProcess()
{
mutex.lock();
m_abort = true;
mutex.unlock();
}
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