OpenSceneGraph/include/osgViewer/GraphicsWindow

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/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2006 Robert Osfield
*
* This library is open source and may be redistributed and/or modified under
* the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
* (at your option) any later version. The full license is in LICENSE file
* included with this distribution, and on the openscenegraph.org website.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* OpenSceneGraph Public License for more details.
*/
#ifndef OSGVIEWER_GRAPHICWINDOW
#define OSGVIEWER_GRAPHICWINDOW 1
#include <osg/GraphicsContext>
#include <osg/Notify>
#include <osgGA/EventQueue>
2006-11-29 04:35:31 +08:00
#include <osgGA/GUIActionAdapter>
#include <osgViewer/Export>
namespace osgViewer {
/** Base class for providing Windowing API agnostic access to creating and managing graphisc window and events.
* Note, the GraphicsWindow is subclassed from osg::GraphicsContext, and to provide an implemention you'll need to implement its
* range of pure virtual functions, you'll find these all have naming convention methodNameImplemention(..).
* GraphicsWindow adds the event queue ontop of the GraphicsContext, thereby adding a mechnism for adapting Windowing events
* as well as basics graphics context work, you should wire up custom GraphicsWindowImplementation to push their events through
* into the EventQueue. */
class OSGVIEWER_EXPORT GraphicsWindow : public osg::GraphicsContext, public osgGA::GUIActionAdapter
{
public:
GraphicsWindow() { _eventQueue = new osgGA::EventQueue; }
void setEventQueue(osgGA::EventQueue* eventQueue) { _eventQueue = eventQueue; }
osgGA::EventQueue* getEventQueue() { return _eventQueue.get(); }
const osgGA::EventQueue* getEventQueue() const { return _eventQueue.get(); }
public:
/** Realise the GraphicsContext implementation,
* Pure virtual - must be implemented by concrate implementations of GraphicsContext. */
virtual bool realizeImplementation() { osg::notify(osg::NOTICE)<<"GraphicsWindow::realizeImplementation() not implemented."<<std::endl; return false; }
/** Return true if the graphics context has been realised, and is ready to use, implementation.
* Pure virtual - must be implemented by concrate implementations of GraphicsContext. */
virtual bool isRealizedImplementation() const { osg::notify(osg::NOTICE)<<"GraphicsWindow::isRealizedImplementation() not implemented."<<std::endl; return false; }
/** Close the graphics context implementation.
* Pure virtual - must be implemented by concrate implementations of GraphicsContext. */
virtual void closeImplementation() { osg::notify(osg::NOTICE)<<"GraphicsWindow::closeImplementation() not implemented."<<std::endl; }
/** Make this graphics context current implementation.
* Pure virtual - must be implemented by concrate implementations of GraphicsContext. */
virtual void makeCurrentImplementation() { osg::notify(osg::NOTICE)<<"GraphicsWindow::makeCurrentImplementation() not implemented."<<std::endl; }
/** Make this graphics context current with specified read context implementation.
* Pure virtual - must be implemented by concrate implementations of GraphicsContext. */
virtual void makeContextCurrentImplementation(GraphicsContext* /*readContext*/) { osg::notify(osg::NOTICE)<<"GraphicsWindow::makeContextCurrentImplementation(..) not implemented."<<std::endl; }
/** Pure virtual, Bind the graphics context to associated texture implementation.
* Pure virtual - must be implemented by concrate implementations of GraphicsContext. */
virtual void bindPBufferToTextureImplementation(GLenum /*buffer*/) { osg::notify(osg::NOTICE)<<"GraphicsWindow::void bindPBufferToTextureImplementation(..) not implemented."<<std::endl; }
/** Swap the front and back buffers implementation.
* Pure virtual - must be implemented by Concrate implementations of GraphicsContext. */
virtual void swapBuffersImplementation() { osg::notify(osg::NOTICE)<<"GraphicsWindow:: swapBuffersImplementation() not implemented."<<std::endl; }
public:
// Override from GUIActionAdapter
virtual void requestRedraw() {}
// Override from GUIActionAdapter
virtual void requestContinuousUpdate(bool /*needed*/=true) {}
// Override from GUIActionAdapter
virtual void requestWarpPointer(float /*x*/,float /*y*/) {}
protected:
osg::ref_ptr<osgGA::EventQueue> _eventQueue;
};
}
#endif