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# renderthread.h Example File
threads/mandelbrot/renderthread.h

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     ** Copyright (C) 2004-2007 Trolltech ASA. All rights reserved.
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     ** This file is part of the example classes of the Qt Toolkit.
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     ** and appearing in the file LICENSE.GPL included in the packaging of
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     #ifndef RENDERTHREAD_H
     #define RENDERTHREAD_H

     #include <QMutex>
     #include <QSize>
     #include <QThread>
     #include <QWaitCondition>

     class QImage;

     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];
     };

     #endif