729 lines
23 KiB
C++
729 lines
23 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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/* Note, elements of GraphicsWindowX11 have used Prodcer/RenderSurface_X11.cpp as both
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* a guide to use of X11/GLX and copiying directly in the case of setBorder().
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* These elements are license under OSGPL as above, with Copyright (C) 2001-2004 Don Burns.
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*/
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#ifndef OSGVIEWER_GRAPHICSWINDOWX11
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#define OSGVIEWER_GRAPHICSWINDOWX11 1
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#include <osgViewer/Viewer>
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#include <X11/X.h>
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#include <X11/Xlib.h>
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#include <X11/Xutil.h>
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#include <X11/Xmd.h>
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#include <X11/keysym.h>
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#include <X11/Xmu/WinUtil.h>
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#include <X11/cursorfont.h>
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#define GLX_GLXEXT_PROTOTYPES 1
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#include <GL/glx.h>
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namespace osgViewer
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{
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class GraphicsContextX11 : public osg::GraphicsContext
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{
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public:
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GraphicsContextX11(osg::GraphicsContext::Traits* traits):
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_display(0),
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_parent(0),
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_window(0)
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{
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_traits = traits;
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}
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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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protected:
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Display* _display;
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Window _parent;
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Window _window;
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};
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class GraphicsWindowX11 : public osgViewer::GraphicsWindow
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{
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public:
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GraphicsWindowX11(osg::GraphicsContext::Traits* traits):
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_display(0),
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_parent(0),
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_window(0),
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_visualInfo(0),
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_glxContext(0),
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_defaultCursor(0),
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_nullCursor(0),
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_currentCursor(0),
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_initialized(false),
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_realized(false)
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{
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_traits = traits;
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setState( new osg::State );
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getState()->setContextID( osg::GraphicsContext::createNewContextID() );
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}
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/** Realise the GraphicsContext.*/
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virtual bool realizeImplementation();
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/** Return true if the graphics context has been realised and is ready to use.*/
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virtual bool isRealizedImplementation() const { return _realized; }
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/** Close the graphics context.*/
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virtual void closeImplementation();
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/** Make this graphics context current.*/
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virtual void makeCurrentImplementation();
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/** Swap the front and back buffers.*/
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virtual void swapBuffersImplementation();
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/** Check to see if any events have been generated.*/
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virtual void checkEvents();
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protected:
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bool createVisualInfo();
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void setBorder(bool flag);
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void init();
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void transformMouseXY(float& x, float& y);
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void adaptKey(XKeyEvent& keyevent, int& keySymbol, unsigned int& modifierMask);
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Display* _display;
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Window _parent;
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Window _window;
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XVisualInfo* _visualInfo;
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GLXContext _glxContext;
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Cursor _defaultCursor;
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Cursor _nullCursor;
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Cursor _currentCursor;
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bool _initialized;
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bool _realized;
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};
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bool GraphicsWindowX11::createVisualInfo()
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{
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typedef std::vector<int> Attributes;
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Attributes attributes;
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attributes.push_back(GLX_USE_GL);
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attributes.push_back(GLX_RGBA);
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if (_traits->_doubleBuffer) attributes.push_back(GLX_DOUBLEBUFFER);
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if (_traits->_quadBufferStereo) attributes.push_back(GLX_STEREO);
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attributes.push_back(GLX_RED_SIZE); attributes.push_back(_traits->_red);
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attributes.push_back(GLX_GREEN_SIZE); attributes.push_back(_traits->_green);
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attributes.push_back(GLX_BLUE_SIZE); attributes.push_back(_traits->_blue);
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attributes.push_back(GLX_DEPTH_SIZE); attributes.push_back(_traits->_depth);
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if (_traits->_alpha) { attributes.push_back(GLX_ALPHA_SIZE); attributes.push_back(_traits->_alpha); }
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if (_traits->_stencil) { attributes.push_back(GLX_STENCIL_SIZE); attributes.push_back(_traits->_stencil); }
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// TODO
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// GLX_AUX_BUFFERS
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// GLX_ACCUM_RED_SIZE
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// GLX_ACCUM_GREEN_SIZE
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// GLX_SAMPLE_BUFFERS
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// GLX_SAMPLES
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attributes.push_back(None);
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_visualInfo = glXChooseVisual( _display, _traits->_screenNum, &(attributes.front()) );
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return _visualInfo != 0;
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}
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void GraphicsWindowX11::setBorder(bool flag)
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{
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Atom atom;
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if( (atom = XInternAtom( _display, "_MOTIF_WM_HINTS", 0 )) != None )
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{
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// Hack for sending 64 bit atom to Xserver
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#if defined( _MIPS_SIM) && (_MIPS_SIM == _MIPS_SIM_ABI64) || defined ( __ia64 ) || defined (__amd64 ) || defined(__x86_64__)
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struct {
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CARD32 flags0;
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CARD32 flags1;
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CARD32 functions0;
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CARD32 functions1;
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CARD32 decorations0;
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CARD32 decorations1;
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INT32 input_mode0;
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INT32 input_mode1;
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CARD32 status0;
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CARD32 status1;
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} wmHints;
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#if defined( __ia64 ) || defined (__amd64) || defined (__x86_64__)
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wmHints.flags0 = (1L << 1);
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wmHints.functions0 = 0;
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wmHints.decorations0 = flag;
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wmHints.input_mode0 = 0;
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#else
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wmHints.flags1 = (1L << 1);
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wmHints.functions1 = 0;
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wmHints.decorations1 = flag;
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wmHints.input_mode1 = 0;
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#endif
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#else
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struct {
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CARD32 flags;
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CARD32 functions;
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CARD32 decorations;
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INT32 input_mode;
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CARD32 status;
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} wmHints;
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wmHints.flags = (1L << 1);
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wmHints.functions = 0;
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wmHints.decorations = flag;
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wmHints.input_mode = 0;
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#endif
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XUnmapWindow(_display, _window );
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XChangeProperty( _display, _window, atom, atom, 32, PropModeReplace, (unsigned char *)&wmHints, 5 );
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XMapWindow(_display, _window );
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XFlush(_display);
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XSync(_display,0);
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}
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else
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osg::notify(osg::NOTICE)<<"Error: GraphicsWindowX11::setBorder(" << flag << ") - couldn't change decorations." << std::endl;
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}
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void GraphicsWindowX11::init()
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{
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if (!_traits || _initialized) return;
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const char* displayString = _traits->_hostName.c_str();
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_display = XOpenDisplay(displayString);
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unsigned int screen = _traits->_screenNum;
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if (!_display)
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{
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osg::notify(osg::NOTICE)<<"Error: Unable to open display \"" << XDisplayName(displayString) << "\". Is the DISPLAY environmental variable set?"<<std::endl;
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return;
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}
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// Query for GLX extension
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int errorBase, eventBase;
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if( glXQueryExtension( _display, &errorBase, &eventBase) == False )
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{
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osg::notify(osg::NOTICE)<<"Error: " << XDisplayName(displayString) <<" has no GLX extension." << std::endl;
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XCloseDisplay( _display );
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_display = 0;
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return;
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}
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// osg::notify(osg::NOTICE)<<"GLX extension, errorBase="<<errorBase<<" eventBase="<<eventBase<<std::endl;
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if (!createVisualInfo())
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{
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osg::notify(osg::NOTICE)<<"Error: Not able to create requested visual." << std::endl;
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return;
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}
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// need to pick up from traits
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GLXContext sharedGLContext = 0;
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_glxContext = glXCreateContext( _display, _visualInfo, sharedGLContext, GL_TRUE );
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if (!_glxContext)
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{
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osg::notify(osg::NOTICE)<<"Error: Unable to create OpenGL graphics context."<<std::endl;
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return;
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}
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_parent = RootWindow( _display, screen );
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XWindowAttributes watt;
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XGetWindowAttributes( _display, _parent, &watt );
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// unsigned int parentWindowHeight = watt.height;
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osg::notify(osg::NOTICE)<<"First watt.x = "<<watt.x<<" watt.y="<<watt.y<<std::endl;
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XSetWindowAttributes swatt;
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swatt.colormap = XCreateColormap( _display, _parent, _visualInfo->visual, AllocNone);
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//swatt.colormap = DefaultColormap( _dpy, 0 );
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swatt.background_pixel = 0;
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swatt.border_pixel = 0;
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swatt.event_mask = 0;
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unsigned long mask = CWBackPixel | CWBorderPixel | CWEventMask | CWColormap;
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bool overrideRedirect = false;
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if (overrideRedirect)
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{
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swatt.override_redirect = true;
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mask |= CWOverrideRedirect;
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}
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_window = XCreateWindow( _display, _parent,
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_traits->_x,
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_traits->_y,
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_traits->_width, _traits->_height, 0,
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_visualInfo->depth, InputOutput,
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_visualInfo->visual, mask, &swatt );
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if (!_window)
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{
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osg::notify(osg::NOTICE)<<"Error: Unable to create Window."<<std::endl;
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return;
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}
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// This positions the window at _windowX, _windowY
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XSizeHints sh;
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sh.flags = 0;
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sh.flags |= USSize;
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sh.flags &= 0x7;
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sh.flags |= USPosition;
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sh.flags &= 0xB;
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sh.x = _traits->_x;
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sh.y = _traits->_y;
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sh.width = _traits->_width;
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sh.height = _traits->_height;
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XSetStandardProperties( _display, _window, _traits->_windowName.c_str(), _traits->_windowName.c_str(), None, 0, 0, &sh);
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#if 1
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setBorder(_traits->_windowDecoration);
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#else
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setBorder(true);
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#endif
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// Create default Cursor
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_defaultCursor = XCreateFontCursor( _display, XC_left_ptr );
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// Create Null Cursor
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{
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Pixmap pixmap;
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static char buff[2] = {0,0};
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static XColor ncol = {0,0,0,0,DoRed|DoGreen|DoBlue,0};
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pixmap = XCreateBitmapFromData( _display, _parent, buff, 1, 1);
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_nullCursor = XCreatePixmapCursor( _display, pixmap, pixmap, &ncol, &ncol, 0, 0 );
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}
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#if 1
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_currentCursor = _defaultCursor;
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#else
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_currentCursor = _nullCursor;
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#endif
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{
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XDefineCursor( _display, _window, _currentCursor );
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XFlush(_display);
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XSync(_display,0);
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}
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XSelectInput( _display, _window, ExposureMask | StructureNotifyMask |
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KeyPressMask | KeyReleaseMask |
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PointerMotionMask | ButtonPressMask | ButtonReleaseMask);
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XFlush( _display );
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XSync( _display, 0 );
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_initialized = true;
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}
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bool GraphicsWindowX11::realizeImplementation()
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{
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if (_realized) return true;
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if (!_initialized) init();
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if (!_initialized) return false;
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XMapWindow( _display, _window );
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Window temp = _window;
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XSetWMColormapWindows( _display, _window, &temp, 1);
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makeCurrent();
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_realized = true;
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return true;
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}
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void GraphicsWindowX11::makeCurrentImplementation()
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{
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glXMakeCurrent( _display, _window, _glxContext );
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}
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void GraphicsWindowX11::closeImplementation()
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{
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//glXDestroyContext(_display, _glxContext );
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XDestroyWindow(_display, _window);
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XFlush( _display );
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XSync( _display,0 );
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_window = 0;
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_parent = 0;
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if(_visualInfo)
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{
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XFree(_visualInfo);
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_visualInfo = 0;
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}
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_initialized = false;
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_realized = false;
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}
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void GraphicsWindowX11::swapBuffersImplementation()
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{
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glXSwapBuffers(_display, _window);
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}
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void GraphicsWindowX11::checkEvents()
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{
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// osg::notify(osg::NOTICE)<<"Check events"<<std::endl;
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while( XPending(_display) )
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{
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XEvent ev;
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XNextEvent( _display, &ev );
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switch( ev.type )
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{
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case Expose :
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osg::notify(osg::NOTICE)<<"Expose"<<std::endl;
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break;
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case GravityNotify :
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osg::notify(osg::NOTICE)<<"GravityNotify"<<std::endl;
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break;
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case UnmapNotify :
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osg::notify(osg::NOTICE)<<"UnmapNotify"<<std::endl;
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break;
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case ReparentNotify:
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osg::notify(osg::NOTICE)<<"ReparentNotify"<<std::endl;
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break;
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case DestroyNotify :
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osg::notify(osg::NOTICE)<<"DestroyNotify"<<std::endl;
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_realized = false;
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break;
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case ConfigureNotify :
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{
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osg::notify(osg::NOTICE)<<"ConfigureNotify x="<<ev.xconfigure.x<<" y="<<ev.xconfigure.y<<" width="<<ev.xconfigure.width<<", height="<<ev.xconfigure.height<<std::endl;
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_traits->_x = ev.xconfigure.x;
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_traits->_y = ev.xconfigure.y;
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_traits->_width = ev.xconfigure.width;
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_traits->_height = ev.xconfigure.height;
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// need to dispatch resize event.
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break;
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}
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case MapNotify :
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{
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osg::notify(osg::NOTICE)<<"MapNotify"<<std::endl;
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XWindowAttributes watt;
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do
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XGetWindowAttributes(_display, _window, &watt );
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while( watt.map_state != IsViewable );
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XSetInputFocus( _display, _window, RevertToNone, CurrentTime );
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XFlush(_display); XSync(_display,0);
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break;
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}
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case MotionNotify :
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{
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int wx, wy;
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Window win = 0L;
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if( ev.xmotion.same_screen )
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{
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wx = ev.xmotion.x;
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wy = ev.xmotion.y;
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}
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else
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{
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// the mouse in on another screen so need to compute the
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// coordinates of the mouse position relative to an absolute position
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// then take away the position of the original window/screen to get
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// the coordinates relative to the original position.
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Window root;
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int rx, ry;
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unsigned int buttons;
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int screenOrigin_x = 0;
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int screenOrigin_y = 0;
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int i;
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for(i= 0; i < ScreenCount(_display); i++ )
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{
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if( XQueryPointer( _display, RootWindow(_display, i),
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&root, &win, &rx, &ry, &wx, &wy, &buttons) )
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{
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break;
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}
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screenOrigin_x += DisplayWidth(_display, i);
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}
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for(i= 0; i < static_cast<int>(_traits->_screenNum); i++ )
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{
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screenOrigin_x -= DisplayWidth(_display, i);
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}
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wx += (screenOrigin_x - _traits->_x);
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wy += (screenOrigin_y - _traits->_y);
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}
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float mx = wx;
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float my = wy;
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transformMouseXY(mx, my);
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getEventQueue()->mouseMotion(mx, my);
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break;
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}
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case ButtonPress :
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{
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if( ev.xbutton.button == Button4 )
|
|
{
|
|
getEventQueue()->mouseScroll(osgGA::GUIEventAdapter::SCROLL_UP);
|
|
}
|
|
else if( ev.xbutton.button == Button5)
|
|
{
|
|
getEventQueue()->mouseScroll(osgGA::GUIEventAdapter::SCROLL_DOWN);
|
|
}
|
|
else
|
|
{
|
|
float mx = ev.xbutton.x;
|
|
float my = ev.xmotion.y;
|
|
transformMouseXY(mx, my);
|
|
getEventQueue()->mouseButtonPress(mx, my, ev.xbutton.button);
|
|
}
|
|
break;
|
|
}
|
|
|
|
case ButtonRelease :
|
|
{
|
|
if( ev.xbutton.button == Button4 )
|
|
{
|
|
getEventQueue()->mouseScroll(osgGA::GUIEventAdapter::SCROLL_UP);
|
|
}
|
|
else if( ev.xbutton.button == Button5)
|
|
{
|
|
getEventQueue()->mouseScroll(osgGA::GUIEventAdapter::SCROLL_DOWN);
|
|
}
|
|
else
|
|
{
|
|
float mx = ev.xbutton.x;
|
|
float my = ev.xmotion.y;
|
|
transformMouseXY(mx, my);
|
|
getEventQueue()->mouseButtonRelease(mx, my, ev.xbutton.button);
|
|
}
|
|
break;
|
|
}
|
|
|
|
case KeyPress:
|
|
{
|
|
int keySymbol = 0;
|
|
unsigned int modifierMask = 0;
|
|
adaptKey(ev.xkey, keySymbol, modifierMask);
|
|
|
|
getEventQueue()->keyPress(keySymbol);
|
|
getEventQueue()->getCurrentEventState()->setModKeyMask(modifierMask);
|
|
break;
|
|
}
|
|
|
|
case KeyRelease:
|
|
{
|
|
int keySymbol = 0;
|
|
unsigned int modifierMask = 0;
|
|
adaptKey(ev.xkey, keySymbol, modifierMask);
|
|
|
|
getEventQueue()->keyRelease(keySymbol);
|
|
getEventQueue()->getCurrentEventState()->setModKeyMask(modifierMask);
|
|
break;
|
|
}
|
|
|
|
default:
|
|
osg::notify(osg::NOTICE)<<"Other event"<<std::endl;
|
|
break;
|
|
|
|
}
|
|
}
|
|
}
|
|
|
|
void GraphicsWindowX11::transformMouseXY(float& x, float& y)
|
|
{
|
|
if (getEventQueue()->getUseFixedMouseInputRange())
|
|
{
|
|
osgGA::GUIEventAdapter* eventState = getEventQueue()->getCurrentEventState();
|
|
x = eventState->getXmin() + (eventState->getXmax()-eventState->getXmin())*x/float(_traits->_width);
|
|
y = eventState->getYmin() + (eventState->getYmax()-eventState->getYmin())*y/float(_traits->_height);
|
|
}
|
|
}
|
|
|
|
void GraphicsWindowX11::adaptKey(XKeyEvent& keyevent, int& keySymbol, unsigned int& modifierMask)
|
|
{
|
|
// KeySym ks = XKeycodeToKeysym( _display, keyevent.keycode, 0 );
|
|
|
|
static XComposeStatus state;
|
|
unsigned char keybuf[32];
|
|
XLookupString( &keyevent, (char *)keybuf, sizeof(keybuf), NULL, &state );
|
|
|
|
modifierMask = 0;
|
|
if( keyevent.state & ShiftMask )
|
|
{
|
|
modifierMask |= osgGA::GUIEventAdapter::MODKEY_SHIFT;
|
|
}
|
|
if( keyevent.state & LockMask )
|
|
{
|
|
modifierMask |= osgGA::GUIEventAdapter::MODKEY_CAPS_LOCK;
|
|
}
|
|
if( keyevent.state & ControlMask )
|
|
{
|
|
modifierMask |= osgGA::GUIEventAdapter::MODKEY_CTRL;
|
|
}
|
|
if( keyevent.state & Mod1Mask )
|
|
{
|
|
modifierMask |= osgGA::GUIEventAdapter::MODKEY_ALT;
|
|
}
|
|
if( keyevent.state & Mod2Mask )
|
|
{
|
|
modifierMask |= osgGA::GUIEventAdapter::MODKEY_NUM_LOCK;
|
|
}
|
|
if( keyevent.state & Mod4Mask )
|
|
{
|
|
modifierMask |= osgGA::GUIEventAdapter::MODKEY_META;
|
|
}
|
|
|
|
keySymbol = keybuf[0];
|
|
}
|
|
|
|
struct X11WindowingSystemInterface : public osg::GraphicsContext::WindowingSystemInterface
|
|
{
|
|
|
|
X11WindowingSystemInterface()
|
|
{
|
|
}
|
|
|
|
virtual unsigned int getNumScreens(const osg::GraphicsContext::ScreenIdentifier& si)
|
|
{
|
|
const char* displayString = si._hostName.c_str();
|
|
Display* display = XOpenDisplay(displayString);
|
|
if(display)
|
|
{
|
|
unsigned int numScreens = ScreenCount(display);
|
|
XCloseDisplay(display);
|
|
|
|
return numScreens;
|
|
}
|
|
else
|
|
{
|
|
osg::notify(osg::NOTICE) << "Unable to open display \"" << XDisplayName(displayString) << "\". Is the DISPLAY environmental variable set?"<<std::endl;
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
virtual void getScreenResolution(const osg::GraphicsContext::ScreenIdentifier& si, unsigned int& width, unsigned int& height)
|
|
{
|
|
const char* displayString = si._hostName.c_str();
|
|
Display* display = XOpenDisplay(displayString);
|
|
if(display)
|
|
{
|
|
width = DisplayWidth(display, si._screenNum);
|
|
height = DisplayHeight(display, si._screenNum);
|
|
XCloseDisplay(display);
|
|
}
|
|
else
|
|
{
|
|
osg::notify(osg::NOTICE) << "Unable to open display \"" << XDisplayName(displayString) << "\". Is the DISPLAY environmental variable set?"<<std::endl;
|
|
width = 0;
|
|
height = 0;
|
|
}
|
|
}
|
|
|
|
virtual osg::GraphicsContext* createGraphicsContext(osg::GraphicsContext::Traits* traits)
|
|
{
|
|
if (traits->_pbuffer)
|
|
{
|
|
return new GraphicsContextX11(traits);
|
|
}
|
|
else
|
|
{
|
|
return new GraphicsWindowX11(traits);
|
|
}
|
|
}
|
|
|
|
};
|
|
|
|
struct RegisterWindowingSystemInterfaceProxy
|
|
{
|
|
RegisterWindowingSystemInterfaceProxy()
|
|
{
|
|
osg::GraphicsContext::setWindowingSystemInterface(new X11WindowingSystemInterface);
|
|
}
|
|
|
|
~RegisterWindowingSystemInterfaceProxy()
|
|
{
|
|
osg::GraphicsContext::setWindowingSystemInterface(0);
|
|
}
|
|
};
|
|
|
|
RegisterWindowingSystemInterfaceProxy createWindowingSystemInterfaceProxy;
|
|
|
|
}
|
|
|
|
#endif
|