#ifndef IFCVIEWERWIDGET_H

#define IFCVIEWERWIDGET_H

#include <QOpenGLWidget>

#include <QOpenGLFunctions>

#include <QOpenGLContext>

#include <QMatrix4x4>

#include <osg/ref_ptr>

#include <osgViewer/GraphicsWindow>

#include <osgViewer/Viewer>

#include <osgGA/TrackballManipulator>

#include <osg/Group>

#include <string>

#include "ParseIfcFile.h"

#include "osg/Vec4"

class IfcViewerWidget : public QOpenGLWidget

{

Q_OBJECT

public:

IfcViewerWidget(

qreal dpiScale,

QWidget *parent = nullptr

);

public slots:

void loadFile(const std::string& filePath);

protected:

virtual void initializeGL() override; // to set up resources, state

virtual void resizeGL(int w, int h) override; // to set up viewport, projection, etc.

virtual void paintGL() override; // to render OpenGL scene

virtual void mousePressEvent(QMouseEvent *event) override;

virtual void mouseMoveEvent(QMouseEvent *event) override;

virtual void mouseReleaseEvent(QMouseEvent *event) override;

virtual void wheelEvent(QWheelEvent *event) override;

virtual bool event(QEvent* event) override;

private:

qreal m_dpiScale;

QMatrix4x4 m_projection;

osg::Vec4 m_clearColor;

osg::ref_ptr<osgGA::TrackballManipulator> m_mouseHandler;

osg::ref_ptr<osgViewer::GraphicsWindowEmbedded> m_graphicsWindow;

osg::ref_ptr<osgViewer::Viewer> m_viewer;

osg::ref_ptr<osg::Group> root; // OSG root node

ParseIfcFile m_parser;

osgGA::EventQueue* getEventQueue() const;

unsigned int getMouseButtonNum(QMouseEvent* event);

void setupViewController();

void orientScene(osg::ref_ptr<osg::Group> rootGroup);

};

#endif // IFCVIEWERWIDGET_H