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#pragma once

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

QT_BEGIN_NAMESPACE
class QImage;
QT_END_NAMESPACE

class RenderThread : public QThread
{
    Q_OBJECT

public:
    RenderThread(QObject* parent = nullptr);
    ~RenderThread();

    void render(double centerX, double centerY, double scaleFactor, QSize resultSize,
                double devicePixelRatio);

signals:
    void renderedImage(const QImage& image, double scaleFactor);

protected:
    void run() override;

private:
    static uint rgbFromWaveLength(double wave);

    QMutex m_mutex;
    QWaitCondition m_condition;
    double m_centerX;
    double m_centerY;
    double m_scaleFactor;
    double m_devicePixelRatio;
    QSize m_resultSize;
    bool m_restart = false;
    bool m_abort = false;

    static constexpr int ColormapSize = 512;
    uint m_colormap[ColormapSize];
};