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 public:
  58     wxGLContext( bool isRGB, wxWindow *win, const wxPalette& palette = wxNullPalette );
  59     wxGLContext(
  60                bool WXUNUSED(isRGB), wxWindow *win,
  61                const wxPalette& WXUNUSED(palette),
  62                const wxGLContext *other        /* for sharing display lists */
  63     );
  64     ~wxGLContext();
  65
  66     void SetCurrent();
  67     void SetColour(const char *colour);
  68     void SwapBuffers();
  69
  70     void SetupPixelFormat();
  71     void SetupPalette(const wxPalette& palette);
  72     wxPalette CreateDefaultPalette();
  73
  74     inline wxPalette* GetPalette() const { return (wxPalette*) & m_palette; }
  75     inline wxWindow* GetWindow() const { return m_window; }
  76     inline GtkWidget* GetWidget() const { return m_widget; }
  77     inline GLXContext GetContext() const { return m_glContext; }
  78
  79 public:
  80    GLXContext       m_glContext;
  81
  82    GtkWidget       *m_widget;
  83    wxPalette        m_palette;
  84    wxWindow*        m_window;
  85
  86 private:
  87   DECLARE_CLASS(wxGLContext)
  88 };
  89
  90 //---------------------------------------------------------------------------
  91 // wxGLContext
  92 //---------------------------------------------------------------------------
  93
  94 class wxGLCanvas: public wxScrolledWindow
  95 {
  96 public:
  97    wxGLCanvas( wxWindow *parent, wxWindowID id = -1,
  98         const wxPoint& pos = wxDefaultPosition,
  99         const wxSize& size = wxDefaultSize,
 100         long style = 0, const wxString& name = "GLCanvas",
 101         int *attribList = (int*) NULL,
 102         const wxPalette& palette = wxNullPalette );
 103    wxGLCanvas( wxWindow *parent, const wxGLContext *shared = (wxGLContext *)NULL,
 104         wxWindowID id = -1,
 105         const wxPoint& pos = wxDefaultPosition,
 106         const wxSize& size = wxDefaultSize,
 107         long style = 0, const wxString& name = "GLCanvas",
 108         int *attribList = (int*) NULL,
 109         const wxPalette& palette = wxNullPalette );
 110
 111    inline wxGLCanvas() {
 112       m_glContext = (wxGLContext*) NULL;
 113       m_sharedContext = (wxGLContext*) NULL;
 114       m_glWidget = (GtkWidget*) NULL;
 115       m_vi = (void*) NULL;
 116       m_exposed = FALSE;
 117    }
 118
 119    bool Create( wxWindow *parent, const wxGLContext *shared = (wxGLContext *)NULL,
 120         wxWindowID id = -1,
 121         const wxPoint& pos = wxDefaultPosition,
 122         const wxSize& size = wxDefaultSize,
 123         long style = 0, const wxString& name = "GLCanvas",
 124         int *attribList = (int*) NULL,
 125         const wxPalette& palette = wxNullPalette );
 126
 127    ~wxGLCanvas();
 128
 129    void SetCurrent();
 130    void SetColour(const char *colour);
 131    void SwapBuffers();
 132
 133    void OnSize(wxSizeEvent& event);
 134
 135    void OnInternalIdle();
 136
 137    inline wxGLContext* GetContext() const { return m_glContext; }
 138
 139  // implementation
 140
 141     wxGLContext      *m_glContext,
 142                      *m_sharedContext;
 143     void             *m_vi;
 144     GtkWidget        *m_glWidget;
 145     bool              m_exposed;
 146
 147 private:
 148     DECLARE_EVENT_TABLE()
 149     DECLARE_CLASS(wxGLCanvas)
 150 };
 151
 152 #endif