renderthread.h Example File

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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() Q_DECL_OVERRIDE;

  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 // RENDERTHREAD_H