include/wx/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
  21 #if wxUSE_GLCANVAS
  22
  23 #include <wx/scrolwin.h>
  24
  25 extern "C" {
  26 #include "GL/gl.h"
  27 #include "GL/glx.h"
  28 #include "GL/glu.h"
  29 }
  30
  31 //---------------------------------------------------------------------------
  32 // Constants for attriblist
  33 //---------------------------------------------------------------------------
  34
  35 enum
  36 {
  37   WX_GL_RGBA=1,          /* use true color palette */
  38   WX_GL_DEPTH_SIZE,      /* bits for Z-buffer (0,16,32) */
  39   WX_GL_DOUBLEBUFFER,    /* use doublebuffer */
  40   WX_GL_MIN_RED,         /* use red buffer with most bits (> MIN_RED bits) */
  41   WX_GL_MIN_GREEN,       /* use green buffer with most bits (> MIN_GREEN bits) */
  42   WX_GL_MIN_BLUE         /* use blue buffer with most bits (> MIN_BLUE bits) */
  43 /* these are enough constants for now, the remaining will be added later */
  44 };
  45
  46 //---------------------------------------------------------------------------
  47 // classes
  48 //---------------------------------------------------------------------------
  49
  50 class WXDLLEXPORT wxGLContext;
  51 class WXDLLEXPORT wxGLCanvas;
  52
  53 //---------------------------------------------------------------------------
  54 // wxGLContext
  55 //---------------------------------------------------------------------------
  56
  57
  58 class WXDLLEXPORT wxGLContext: public wxObject
  59 {
  60 public:
  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    GLXContext       m_glContext;
  84
  85    GtkWidget       *m_widget;
  86    wxPalette        m_palette;
  87    wxWindow*        m_window;
  88
  89 private:
  90   DECLARE_CLASS(wxGLContext)
  91 };
  92
  93 //---------------------------------------------------------------------------
  94 // wxGLContext
  95 //---------------------------------------------------------------------------
  96
  97 class WXDLLEXPORT wxGLCanvas: public wxScrolledWindow
  98 {
  99 public:
 100    inline wxGLCanvas() {
 101       m_glContext = (wxGLContext*) NULL;
 102       m_sharedContext = (wxGLContext*) NULL;
 103       m_glWidget = (GtkWidget*) NULL;
 104       m_vi = (void*) NULL;
 105       m_exposed = FALSE;
 106    }
 107    wxGLCanvas( wxWindow *parent, 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    wxGLCanvas( wxWindow *parent, const wxGLContext *shared = (wxGLContext *)NULL,
 114         wxWindowID id = -1,
 115         const wxPoint& pos = wxDefaultPosition,
 116         const wxSize& size = wxDefaultSize,
 117         long style = 0, const wxString& name = "GLCanvas",
 118         int *attribList = (int*) NULL,
 119         const wxPalette& palette = wxNullPalette );
 120    wxGLCanvas( wxWindow *parent, const wxGLCanvas *shared = (wxGLCanvas *)NULL,
 121         wxWindowID id = -1,
 122         const wxPoint& pos = wxDefaultPosition,
 123         const wxSize& size = wxDefaultSize,
 124         long style = 0, const wxString& name = "GLCanvas",
 125         int *attribList = (int*) NULL,
 126         const wxPalette& palette = wxNullPalette );
 127
 128    bool Create( wxWindow *parent,
 129         const wxGLContext *shared = (wxGLContext*)NULL,
 130         const wxGLCanvas *shared_context_of = (wxGLCanvas*)NULL,
 131         wxWindowID id = -1,
 132         const wxPoint& pos = wxDefaultPosition,
 133         const wxSize& size = wxDefaultSize,
 134         long style = 0, const wxString& name = "GLCanvas",
 135         int *attribList = (int*) NULL,
 136         const wxPalette& palette = wxNullPalette );
 137
 138    ~wxGLCanvas();
 139
 140    void SetCurrent();
 141    void SetColour(const char *colour);
 142    void SwapBuffers();
 143
 144    void OnSize(wxSizeEvent& event);
 145
 146    void OnInternalIdle();
 147
 148    inline wxGLContext* GetContext() const { return m_glContext; }
 149
 150  // implementation
 151
 152     wxGLContext      *m_glContext,
 153                      *m_sharedContext;
 154     wxGLCanvas       *m_sharedContextOf;
 155     void             *m_vi;
 156     GtkWidget        *m_glWidget;
 157     bool              m_exposed;
 158
 159 private:
 160     DECLARE_EVENT_TABLE()
 161     DECLARE_CLASS(wxGLCanvas)
 162 };
 163
 164 #endif
 165     // wxUSE_GLCANVAS
 166
 167 #endif
 168     // _WX_GLCANVAS_H_
 169