utils/glcanvas/gtk/glcanvas.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        glcanvas.h
   3 // Purpose:     wxGLCanvas, for using OpenGL/Mesa with wxWindows and GTK
   4 // Author:      Robert Roebling
   5 // Modified by:
   6 // Created:     17/8/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Robert Roebling
   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/defs.h"
  20 #include "wx/scrolwin.h"
  21
  22 extern "C" {
  23 #include "GL/gl.h"
  24 #include "GL/glx.h"
  25 #include "GL/glu.h"
  26 }
  27
  28 //---------------------------------------------------------------------------
  29 // Constants for attriblist
  30 //---------------------------------------------------------------------------
  31
  32 enum
  33 {
  34   WX_GL_RGBA=1,          /* use true color palette */
  35   WX_GL_DEPTH_SIZE,      /* bits for Z-buffer (0,16,32) */
  36   WX_GL_DOUBLEBUFFER,    /* use doublebuffer */
  37   WX_GL_MIN_RED,         /* use red buffer with most bits (> MIN_RED bits) */
  38   WX_GL_MIN_GREEN,       /* use green buffer with most bits (> MIN_GREEN bits) */
  39   WX_GL_MIN_BLUE         /* use blue buffer with most bits (> MIN_BLUE bits) */
  40 /* these are enough constants for now, the remaining will be added later */
  41 };
  42
  43 //---------------------------------------------------------------------------
  44 // classes
  45 //---------------------------------------------------------------------------
  46
  47 class wxGLContext;
  48 class wxGLCanvas;
  49
  50 //---------------------------------------------------------------------------
  51 // wxGLContext
  52 //---------------------------------------------------------------------------
  53
  54
  55 class wxGLContext: public wxObject
  56 {
  57   DECLARE_CLASS(wxGLContext)
  58
  59   public:
  60
  61     wxGLContext( bool isRGB, wxWindow *win, const wxPalette& palette = wxNullPalette );
  62     wxGLContext(
  63                bool WXUNUSED(isRGB), wxWindow *win,
  64                const wxPalette& WXUNUSED(palette),
  65                const wxGLContext *other        /* for sharing display lists */
  66     );
  67     ~wxGLContext();
  68
  69     void SetCurrent();
  70     void SetColour(const char *colour);
  71     void SwapBuffers();
  72
  73     void SetupPixelFormat();
  74     void SetupPalette(const wxPalette& palette);
  75     wxPalette CreateDefaultPalette();
  76
  77     inline wxPalette* GetPalette() const { return (wxPalette*) & m_palette; }
  78     inline wxWindow* GetWindow() const { return m_window; }
  79     inline GtkWidget* GetWidget() const { return m_widget; }
  80     inline GLXContext GetContext() const { return m_glContext; }
  81
  82  public:
  83
  84    GLXContext       m_glContext;
  85
  86    GtkWidget       *m_widget;
  87    wxPalette        m_palette;
  88    wxWindow*        m_window;
  89 };
  90
  91 //---------------------------------------------------------------------------
  92 // wxGLContext
  93 //---------------------------------------------------------------------------
  94
  95 class wxGLCanvas: public wxScrolledWindow
  96 {
  97    DECLARE_CLASS(wxGLCanvas)
  98
  99  public:
 100    wxGLCanvas( wxWindow *parent, wxWindowID id = -1,
 101         const wxPoint& pos = wxDefaultPosition,
 102         const wxSize& size = wxDefaultSize,
 103         long style = 0, const wxString& name = "GLCanvas",
 104         int *attribList = (int*) NULL,
 105         const wxPalette& palette = wxNullPalette );
 106    wxGLCanvas( wxWindow *parent, const wxGLContext *shared = (wxGLContext *)NULL,
 107         wxWindowID id = -1,
 108         const wxPoint& pos = wxDefaultPosition,
 109         const wxSize& size = wxDefaultSize,
 110         long style = 0, const wxString& name = "GLCanvas",
 111         int *attribList = (int*) NULL,
 112         const wxPalette& palette = wxNullPalette );
 113
 114    bool Create( wxWindow *parent, const wxGLContext *shared = (wxGLContext *)NULL,
 115         wxWindowID id = -1,
 116         const wxPoint& pos = wxDefaultPosition,
 117         const wxSize& size = wxDefaultSize,
 118         long style = 0, const wxString& name = "GLCanvas",
 119         int *attribList = (int*) NULL,
 120         const wxPalette& palette = wxNullPalette );
 121
 122    ~wxGLCanvas();
 123
 124    void SetCurrent();
 125    void SetColour(const char *colour);
 126    void SwapBuffers();
 127
 128    void OnSize(wxSizeEvent& event);
 129
 130    inline wxGLContext* GetContext() const { return m_glContext; }
 131
 132  // implementation
 133
 134     virtual void DoSetSize( int x, int y, int width, int height,
 135       int sizeFlags = wxSIZE_AUTO );
 136
 137     virtual GtkWidget *GetConnectWidget();
 138     bool IsOwnGtkWindow( GdkWindow *window );
 139
 140     wxGLContext      *m_glContext;
 141     GtkWidget        *m_glWidget;
 142
 143   DECLARE_EVENT_TABLE()
 144 };
 145
 146 #endif