#include <QWindow>
#include <QOpenGLExtraFunctions>

class QPainter;
class QOpenGLContext;
class QOpenGLPaintDevice;


class OpenGLWindow: public QWindow, protected QOpenGLExtraFunctions
{
	Q_OBJECT
public:
	explicit OpenGLWindow(QWindow *parent = nullptr);
	~OpenGLWindow();

	virtual void render(QPainter *painter);
	virtual void render();

	virtual void initialize();

	QOpenGLContext * context() {return m_context;}

public slots:
	void renderLater();
	void renderNow();

protected:
	bool event(QEvent *event) override;

	void exposeEvent(QExposeEvent *event) override;

private:
	QOpenGLContext *m_context;
	QOpenGLPaintDevice *m_device;
};