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

    #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


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Qt 4.0.0-b2