include/wx/msw/glcanvas.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        wx/msw/glcanvas.h
   3 // Purpose:     wxGLCanvas, for using OpenGL with wxWindows under Windows
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     04/01/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifdef __GNUG__
  13 #pragma interface "glcanvas.h"
  14 #endif
  15
  16 #ifndef _WX_GLCANVAS_H_
  17 #define _WX_GLCANVAS_H_
  18
  19 #include "wx/palette.h"
  20 #include "wx/scrolwin.h"
  21
  22 #include <windows.h>
  23 #include "wx/msw/winundef.h"
  24
  25 #include <GL/gl.h>
  26
  27 //---------------------------------------------------------------------------
  28 // Constants for attriblist
  29 //---------------------------------------------------------------------------
  30
  31 // The generic GL implementation doesn't support most of these options,
  32 // such as stereo, auxiliary buffers, alpha channel, and accum buffer.
  33 // Other implementations may actually support them.
  34
  35 enum
  36 {
  37   WX_GL_RGBA=1,          /* use true color palette */
  38   WX_GL_BUFFER_SIZE,     /* bits for buffer if not WX_GL_RGBA */
  39   WX_GL_LEVEL,           /* 0 for main buffer, >0 for overlay, <0 for underlay */
  40   WX_GL_DOUBLEBUFFER,    /* use doublebuffer */
  41   WX_GL_STEREO,          /* use stereoscopic display */
  42   WX_GL_AUX_BUFFERS,     /* number of auxiliary buffers */
  43   WX_GL_MIN_RED,         /* use red buffer with most bits (> MIN_RED bits) */
  44   WX_GL_MIN_GREEN,       /* use green buffer with most bits (> MIN_GREEN bits) */
  45   WX_GL_MIN_BLUE,        /* use blue buffer with most bits (> MIN_BLUE bits) */
  46   WX_GL_MIN_ALPHA,       /* use blue buffer with most bits (> MIN_ALPHA bits) */
  47   WX_GL_DEPTH_SIZE,      /* bits for Z-buffer (0,16,32) */
  48   WX_GL_STENCIL_SIZE,    /* bits for stencil buffer */
  49   WX_GL_MIN_ACCUM_RED,   /* use red accum buffer with most bits (> MIN_ACCUM_RED bits) */
  50   WX_GL_MIN_ACCUM_GREEN, /* use green buffer with most bits (> MIN_ACCUM_GREEN bits) */
  51   WX_GL_MIN_ACCUM_BLUE,  /* use blue buffer with most bits (> MIN_ACCUM_BLUE bits) */
  52   WX_GL_MIN_ACCUM_ALPHA  /* use blue buffer with most bits (> MIN_ACCUM_ALPHA bits) */
  53 };
  54
  55 class WXDLLIMPEXP_GL wxGLCanvas;     /* forward reference */
  56
  57 class WXDLLIMPEXP_GL wxGLContext: public wxObject
  58 {
  59 public:
  60    wxGLContext(bool isRGB, wxGLCanvas *win, const wxPalette& palette = wxNullPalette);
  61    wxGLContext(
  62                bool isRGB, wxGLCanvas *win,
  63                const wxPalette& WXUNUSED(palette),
  64                const wxGLContext *other        /* for sharing display lists */
  65     );
  66    ~wxGLContext();
  67
  68    void SetCurrent();
  69    void SetColour(const wxChar *colour);
  70    void SwapBuffers();
  71
  72
  73    inline wxWindow* GetWindow() const { return m_window; }
  74    inline WXHDC GetHDC() const { return m_hDC; }
  75    inline HGLRC GetGLRC() const { return m_glContext; }
  76
  77 public:
  78    HGLRC            m_glContext;
  79    WXHDC            m_hDC;
  80    wxWindow*        m_window;
  81 };
  82
  83 class WXDLLIMPEXP_GL wxGLCanvas: public wxWindow
  84 {
  85    DECLARE_CLASS(wxGLCanvas)
  86  public:
  87    wxGLCanvas(wxWindow *parent, wxWindowID id = -1, const wxPoint& pos = wxDefaultPosition,
  88         const wxSize& size = wxDefaultSize, long style = 0,
  89         const wxString& name = wxGLCanvasName, int *attribList = 0, const wxPalette& palette = wxNullPalette);
  90    wxGLCanvas( wxWindow *parent, const wxGLContext *shared = (wxGLContext *)NULL,
  91         wxWindowID id = -1, const wxPoint& pos = wxDefaultPosition,
  92         const wxSize& size = wxDefaultSize, long style = 0, const wxString&
  93         name = wxGLCanvasName,
  94         int *attribList = (int*) NULL, const wxPalette& palette = wxNullPalette );
  95
  96    wxGLCanvas( wxWindow *parent, const wxGLCanvas *shared = (wxGLCanvas *)NULL, wxWindowID id = -1,
  97         const wxPoint& pos = wxDefaultPosition, const wxSize& size = wxDefaultSize, long style = 0,
  98         const wxString& name = wxGLCanvasName, int *attribList = 0, const wxPalette& palette = wxNullPalette );
  99
 100    ~wxGLCanvas();
 101
 102    // Replaces wxWindow::Create functionality, since we need to use a different window class
 103    bool Create(wxWindow *parent, wxWindowID id,
 104           const wxPoint& pos, const wxSize& size, long style, const wxString& name);
 105
 106    void SetCurrent();
 107    void SetColour(const wxChar *colour);
 108    void SwapBuffers();
 109
 110    void OnSize(wxSizeEvent& event);
 111
 112    void OnQueryNewPalette(wxQueryNewPaletteEvent& event);
 113    void OnPaletteChanged(wxPaletteChangedEvent& event);
 114
 115    inline wxGLContext* GetContext() const { return m_glContext; }
 116
 117    inline WXHDC GetHDC() const { return m_hDC; }
 118    void SetupPixelFormat(int *attribList = (int*) NULL);
 119    void SetupPalette(const wxPalette& palette);
 120    wxPalette CreateDefaultPalette();
 121
 122    inline wxPalette* GetPalette() const { return (wxPalette*) & m_palette; }
 123
 124 protected:
 125     wxGLContext*   m_glContext;  // this is typedef-ed ptr, in fact
 126     wxPalette      m_palette;
 127     WXHDC          m_hDC;
 128
 129     DECLARE_EVENT_TABLE()
 130 };
 131
 132 #endif
 133     // _WX_GLCANVAS_H_
 134