ImGuiHandler.hpp

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/*
 * Copyright (c) 2011-2019, The DART development contributors
 * All rights reserved.
 *
 * The list of contributors can be found at:
 *   https://github.com/dartsim/dart/blob/master/LICENSE
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 *   without modification, are permitted provided that the following
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 *   * This code incorporates portions of Open Dynamics Engine
 *     (Copyright (c) 2001-2004, Russell L. Smith. All rights
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#ifndef DART_GUI_OSG_IMGUIHANDLER_HPP_
#define DART_GUI_OSG_IMGUIHANDLER_HPP_
 
#include <array>
#include <memory>
#include <vector>
 
#include <osg/GraphicsContext>
#include <osgGA/GUIActionAdapter>
#include <osgGA/GUIEventAdapter>
#include <osgGA/GUIEventHandler>
 
namespace dart {
namespace gui {
namespace osg {
 
class ImGuiWidget;
 
class ImGuiHandler : public osgGA::GUIEventHandler
{
public:
  ImGuiHandler();
 
  void init();
 
  void newFrame(::osg::RenderInfo& renderInfo);
 
  void render(::osg::RenderInfo& renderInfo);
 
  void setCameraCallbacks(::osg::Camera* camera);
 
  //----------------------------------------------------------------------------
  //----------------------------------------------------------------------------
 
  bool hasWidget(const std::shared_ptr<ImGuiWidget>& widget) const;
 
  void addWidget(const std::shared_ptr<ImGuiWidget>& widget,
                 bool visible = true);
 
  void removeWidget(const std::shared_ptr<ImGuiWidget>& widget);
 
  void removeAllWidget();
 
 
  // Documentation inherited.
  bool handle(const osgGA::GUIEventAdapter& eventAdapter,
              osgGA::GUIActionAdapter& actionAdapter,
              ::osg::Object* object,
              ::osg::NodeVisitor* nodeVisitor) override;
 
protected:
  double mTime;
 
  std::array<bool, 3> mMousePressed;
 
  float mMouseWheel;
 
  GLuint mFontTexture;
 
  std::vector<std::shared_ptr<ImGuiWidget>> mWidgets;
};
 
} // namespace osg
} // namespace gui
} // namespace dart
 
#endif // DART_GUI_OSG_IMGUIHANDLER_HPP_