CQtGlCanvasBase.h

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/* +------------------------------------------------------------------------+
   |                     Mobile Robot Programming Toolkit (MRPT)            |
   |                          https://www.mrpt.org/                         |
   |                                                                        |
   | Copyright (c) 2005-2020, Individual contributors, see AUTHORS file     |
   | See: https://www.mrpt.org/Authors - All rights reserved.               |
   | Released under BSD License. See: https://www.mrpt.org/License          |
   +------------------------------------------------------------------------+ */

#pragma once
#include <mrpt/gui/CGlCanvasBase.h>

#include <mrpt/config.h>
#if MRPT_HAS_Qt5

#include <QtGlobal>
#if QT_VERSION < QT_VERSION_CHECK(5, 4, 0)
#include <QGLWidget>
#define QOpenGLWidget QGLWidget
#else
#include <QOpenGLWidget>
#endif

namespace mrpt::gui
{
class CQtGlCanvasBase : public QOpenGLWidget, public mrpt::gui::CGlCanvasBase
{
   public:
    CQtGlCanvasBase(QWidget* parent = nullptr);
    ~CQtGlCanvasBase() override = default;

    void initializeGL() override;
    void paintGL() override;
    void resizeGL(int width, int height) override;

    mrpt::opengl::COpenGLViewport::Ptr mainViewport() const;

    /** Returns the zoom distance of the camera
     * See also setZoomDistance(float), getZoomDistance()*/
    float getCameraZoomDistance() const;

   protected:
    void mousePressEvent(QMouseEvent* event) override;
    void mouseMoveEvent(QMouseEvent* event) override;
    void mouseReleaseEvent(QMouseEvent* event) override;
    void wheelEvent(QWheelEvent* event) override;

    void swapBuffers() override {}
    void preRender() override {}
    void postRender() override {}
    void renderError(const std::string& err_msg) override;

    virtual void updateCamerasParams();
    virtual void insertToMap(const opengl::CRenderizable::Ptr& newObject);
    virtual void removeFromMap(const opengl::CRenderizable::Ptr& newObject);

    bool isPressLMouseButton() const;
    bool isPressRMouseButton() const;
    /** m_isPressLMouseButton and m_isPressRMouseButton are saved in
     * mousePressEvent for mouseMoveEvent as true
     * This function sets it as false */
    void unpressMouseButtons();

   private:
    bool m_isPressLMouseButton{false};
    bool m_isPressRMouseButton{false};

    mrpt::opengl::COpenGLViewport::Ptr m_mainViewport;

};  // end of class

}  // namespace mrpt::gui
#endif  // MRPT_HAS_Qt5