Source/WindowSystem/WIN32/OSGWIN32Window.cpp

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  37 \*---------------------------------------------------------------------------*/
  38
  39 //---------------------------------------------------------------------------
  40 //  Includes
  41 //---------------------------------------------------------------------------
  42
  43 #include <cstdlib>
  44 #include <cstdio>
  45
  46 #include "OSGConfig.h"
  47
  48 // Forget everything if we're not doing a windows compile
  49 #ifdef WIN32
  50
  51 #include "OSGWIN32Window.h"
  52
  53 OSG_USING_NAMESPACE
  54
  55 // Documentation for this class is emited in the
  56 // OSGWIN32WindowBase.cpp file.
  57 // To modify it, please change the .fcd file (OSGWIN32Window.fcd) and
  58 // regenerate the base file.
  59
  60 /*----------------------- constructors & destructors ----------------------*/
  61
  62 //! Constructor
  63
  64 WIN32Window::WIN32Window(void) :
  65     Inherited()
  66 {
  67 }
  68
  69 //! Copy Constructor
  70
  71 WIN32Window::WIN32Window(const WIN32Window &source) :
  72     Inherited(source)
  73 {
  74 }
  75
  76 //! Destructor
  77
  78 WIN32Window::~WIN32Window(void)
  79 {
  80 }
  81
  82 /*----------------------------- class specific ----------------------------*/
  83
  84 //! initialize the static features of the class, e.g. action callbacks
  85
  86 void WIN32Window::initMethod(InitPhase ePhase)
  87 {
  88     Inherited::initMethod(ePhase);
  89 }
  90
  91 //! react to field changes
  92
  93 void WIN32Window::changed(BitVector whichField,
  94                           UInt32    origin,
  95                           BitVector         details)
  96 {
  97     Inherited::changed(whichField, origin, details);
  98 }
  99
 100 //! output the instance for debug purposes
 101
 102 void WIN32Window::dump(      UInt32    ,
 103                          const BitVector ) const
 104 {
 105     SLOG << "Dump WIN32Window NI" << std::endl;
 106 }
 107
 108 /*-------------------------- your_category---------------------------------*/
 109
 110 /*! init the window: create the HDC and HGLRC
 111 */
 112 void WIN32Window::init(GLInitFunctor oFunc)
 113 {
 114     setHdc(GetDC(getHwnd()));
 115
 116     if(getHglrc() == NULL)
 117     {
 118         setHglrc(wglCreateContext(getHdc()));
 119
 120         if(getHglrc() == NULL)
 121         {
 122             std::cerr << "WIN32Window::init: failed: "
 123                       << GetLastError()
 124                       << std::endl;
 125         }
 126     }
 127
 128     Inherited::init(oFunc);
 129
 130     if(getHdc() != NULL)
 131     {
 132         ReleaseDC(getHwnd(), getHdc());
 133
 134         setHdc(NULL);
 135     }
 136 }
 137
 138 void WIN32Window::terminate(void)
 139 {
 140     Inherited::doTerminate();
 141
 142      if(getHglrc() != NULL)
 143      {
 144          this->doDeactivate();
 145
 146          wglDeleteContext(getHglrc());
 147
 148          setHglrc(NULL);
 149      }
 150 }
 151
 152
 153 /*! activate the window: set the HDC and bind the OGL context
 154 */
 155 void WIN32Window::doActivate( void )
 156 {
 157     if(getHdc() == NULL)
 158         setHdc(GetDC(getHwnd()));
 159
 160     if(!wglMakeCurrent(getHdc(), getHglrc()))
 161     {
 162         std::cerr << "WIN32Window::activate: failed: "
 163                   << GetLastError()
 164                   << std::endl;
 165     }
 166 }
 167
 168 void WIN32Window::doDeactivate ( void )
 169 {
 170     // unbind the context
 171     wglMakeCurrent(NULL, NULL);
 172
 173     // release the hardware device context
 174     if(getHdc() != NULL)
 175     {
 176         ReleaseDC(getHwnd(), getHdc());
 177         setHdc(NULL);
 178     }
 179 }
 180
 181 // swap front and back buffers
 182 bool WIN32Window::doSwap(void)
 183 {
 184     if(getHdc() == NULL)
 185         setHdc(GetDC(getHwnd()));
 186
 187     return SwapBuffers(getHdc()) != 0;
 188 }
 189
 190 bool WIN32Window::hasContext(void)
 191 {
 192     return (this->getHglrc() != NULL);
 193 }
 194
 195 #endif // WIN32