CQtGlCanvasBase.h

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/* +------------------------------------------------------------------------+
   |                     Mobile Robot Programming Toolkit (MRPT)            |
   |                          http://www.mrpt.org/                          |
   |                                                                        |
   | Copyright (c) 2005-2017, Individual contributors, see AUTHORS file     |
   | See: http://www.mrpt.org/Authors - All rights reserved.                |
   | Released under BSD License. See details in http://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
{
namespace gui
{
class CQtGlCanvasBase : public QOpenGLWidget, public mrpt::gui::CGlCanvasBase
{
   public:
        CQtGlCanvasBase(QWidget* parent = nullptr);
        virtual ~CQtGlCanvasBase() = default;

        virtual void initializeGL() override;
        virtual void paintGL() override;
        virtual 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:
        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 void swapBuffers() override {}
        virtual void preRender() override {}
        virtual void postRender() override {}
        virtual 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;
        bool m_isPressRMouseButton;

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

};  // end of class

}  // end namespace
}  // end namespace

#endif  // MRPT_HAS_Qt5