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