openvroverlaycontroller.h

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//====== Copyright Valve Corporation, All rights reserved. =======

#ifndef OPENVROVERLAYCONTROLLER_H
#define OPENVROVERLAYCONTROLLER_H

#ifdef _WIN32
#pragma once
#endif

#include "openvr.h"

#include <QtCore/QtCore>
// because of incompatibilities with QtOpenGL and GLEW we need to cherry pick includes
#include <QVector2D>
#include <QMatrix4x4>
#include <QVector>
#include <QVector2D>
#include <QVector3D>
#include <QtGui/QOpenGLContext>
#include <QtWidgets/QGraphicsScene>
#include <QOffscreenSurface>
class QOpenGLFramebufferObject;

class COpenVROverlayController : public QObject
{
    Q_OBJECT
    typedef QObject BaseClass;

public:
    static COpenVROverlayController *SharedInstance();

public:
    COpenVROverlayController();
    virtual ~COpenVROverlayController();

    bool Init();
    void Shutdown();
    void EnableRestart();

    bool BHMDAvailable();
    vr::IVRSystem *GetVRSystem();
    vr::HmdError GetLastHmdError();

    QString GetVRDriverString();
    QString GetVRDisplayString();
    QString GetName() { return m_strName; }

    void SetWidget( QWidget *pWidget );

public slots:
    void OnSceneChanged( const QList<QRectF>& );
    void OnTimeoutPumpEvents();

protected:

private:
    bool ConnectToVRRuntime();
    void DisconnectFromVRRuntime();

    vr::TrackedDevicePose_t m_rTrackedDevicePose[ vr::k_unMaxTrackedDeviceCount ];
    QString m_strVRDriver;
    QString m_strVRDisplay;
    QString m_strName;

    vr::HmdError m_eLastHmdError;

private:
    vr::HmdError m_eCompositorError;
    vr::HmdError m_eOverlayError;
    vr::Compositor_OverlaySettings m_overlaySettings;
    vr::VROverlayHandle_t m_ulOverlayHandle;
    vr::VROverlayHandle_t m_ulOverlayThumbnailHandle;

    QOpenGLContext *m_pOpenGLContext;
    QGraphicsScene *m_pScene;
    QOpenGLFramebufferObject *m_pFbo;
    QOffscreenSurface *m_pOffscreenSurface;

    QTimer *m_pPumpEventsTimer;

    // the widget we're drawing into the texture
    QWidget *m_pWidget;

    QPointF m_ptLastMouse;
    Qt::MouseButtons m_lastMouseButtons;
    bool m_bManualMouseHandling;
};


#endif // OPENVROVERLAYCONTROLLER_H