static/source/qt5-mandelbrot/renderthread.h

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  50
  51 #pragma once
  52
  53 #include <QtCore/QMutex>
  54 #include <QtCore/QSize>
  55 #include <QtCore/QThread>
  56 #include <QtCore/QWaitCondition>
  57
  58 QT_BEGIN_NAMESPACE
  59 class QImage;
  60 QT_END_NAMESPACE
  61
  62 class RenderThread : public QThread
  63 {
  64     Q_OBJECT
  65
  66 public:
  67     RenderThread(QObject* parent = nullptr);
  68     ~RenderThread();
  69
  70     void render(double centerX, double centerY, double scaleFactor, QSize resultSize,
  71                 double devicePixelRatio);
  72
  73 signals:
  74     void renderedImage(const QImage& image, double scaleFactor);
  75
  76 protected:
  77     void run() override;
  78
  79 private:
  80     static uint rgbFromWaveLength(double wave);
  81
  82     QMutex m_mutex;
  83     QWaitCondition m_condition;
  84     double m_centerX;
  85     double m_centerY;
  86     double m_scaleFactor;
  87     double m_devicePixelRatio;
  88     QSize m_resultSize;
  89     bool m_restart = false;
  90     bool m_abort = false;
  91
  92     enum
  93     {
  94         ColormapSize = 512
  95     };
  96     uint m_colormap[ColormapSize];
  97 };