qt5base-lts/examples/threads/mandelbrot/renderthread.h

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/****************************************************************************
**
** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/
**
** This file is part of the examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** 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 Nokia Corporation 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
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** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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****************************************************************************/
#ifndef RENDERTHREAD_H
#define RENDERTHREAD_H
#include <QMutex>
#include <QSize>
#include <QThread>
#include <QWaitCondition>
QT_BEGIN_NAMESPACE
class QImage;
QT_END_NAMESPACE
//! [0]
class RenderThread : public QThread
{
Q_OBJECT
public:
RenderThread(QObject *parent = 0);
~RenderThread();
void render(double centerX, double centerY, double scaleFactor,
QSize resultSize);
signals:
void renderedImage(const QImage &image, double scaleFactor);
protected:
void run();
private:
uint rgbFromWaveLength(double wave);
QMutex mutex;
QWaitCondition condition;
double centerX;
double centerY;
double scaleFactor;
QSize resultSize;
bool restart;
bool abort;
enum { ColormapSize = 512 };
uint colormap[ColormapSize];
};
//! [0]
#endif