window_singlethreaded.h Example File

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#ifndef WINDOW_SINGLETHREADED_H
#define WINDOW_SINGLETHREADED_H
#include <QWindow>
#include <QMatrix4x4>
#include <QTimer>
QT_FORWARD_DECLARE_CLASS(QOpenGLContext)
QT_FORWARD_DECLARE_CLASS(QOpenGLFramebufferObject)
QT_FORWARD_DECLARE_CLASS(QOffscreenSurface)
QT_FORWARD_DECLARE_CLASS(QQuickRenderControl)
QT_FORWARD_DECLARE_CLASS(QQuickWindow)
QT_FORWARD_DECLARE_CLASS(QQmlEngine)
QT_FORWARD_DECLARE_CLASS(QQmlComponent)
QT_FORWARD_DECLARE_CLASS(QQuickItem)
class CubeRenderer;
class WindowSingleThreaded : public QWindow
{
    Q_OBJECT
public:
    WindowSingleThreaded();
    ~WindowSingleThreaded();
protected:
    void exposeEvent(QExposeEvent *e) override;
    void resizeEvent(QResizeEvent *e) override;
    void mousePressEvent(QMouseEvent *e) override;
    void mouseReleaseEvent(QMouseEvent *e) override;
private slots:
    void run();
    void createFbo();
    void destroyFbo();
    void render();
    void requestUpdate();
    void handleScreenChange();
private:
    void startQuick(const QString &filename);
    void updateSizes();
    void resizeFbo();
    QOpenGLContext *m_context;
    QOffscreenSurface *m_offscreenSurface;
    QQuickRenderControl *m_renderControl;
    QQuickWindow *m_quickWindow;
    QQmlEngine *m_qmlEngine;
    QQmlComponent *m_qmlComponent;
    QQuickItem *m_rootItem;
    QOpenGLFramebufferObject *m_fbo;
    bool m_quickInitialized;
    bool m_quickReady;
    QTimer m_updateTimer;
    CubeRenderer *m_cubeRenderer;
    qreal m_dpr;
    bool m_onscreen;
    QSize m_onscreenSize;
};
#endif