| 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 | #if defined(__GNUG__) && !defined(__APPLE__) |
| 13 | #pragma interface "glcanvas.h" |
| 14 | #endif |
| 15 | |
| 16 | #ifndef _WX_GLCANVAS_H_ |
| 17 | #define _WX_GLCANVAS_H_ |
| 18 | |
| 19 | #include "wx/scrolwin.h" |
| 20 | #include "wx/app.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_BUFFER_SIZE, /* bits for buffer if not WX_GL_RGBA */ |
| 36 | WX_GL_LEVEL, /* 0 for main buffer, >0 for overlay, <0 for underlay */ |
| 37 | WX_GL_DOUBLEBUFFER, /* use doublebuffer */ |
| 38 | WX_GL_STEREO, /* use stereoscopic display */ |
| 39 | WX_GL_AUX_BUFFERS, /* number of auxiliary buffers */ |
| 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 | WX_GL_MIN_ALPHA, /* use blue buffer with most bits (> MIN_ALPHA bits) */ |
| 44 | WX_GL_DEPTH_SIZE, /* bits for Z-buffer (0,16,32) */ |
| 45 | WX_GL_STENCIL_SIZE, /* bits for stencil buffer */ |
| 46 | WX_GL_MIN_ACCUM_RED, /* use red accum buffer with most bits (> MIN_ACCUM_RED bits) */ |
| 47 | WX_GL_MIN_ACCUM_GREEN, /* use green buffer with most bits (> MIN_ACCUM_GREEN bits) */ |
| 48 | WX_GL_MIN_ACCUM_BLUE, /* use blue buffer with most bits (> MIN_ACCUM_BLUE bits) */ |
| 49 | WX_GL_MIN_ACCUM_ALPHA /* use blue buffer with most bits (> MIN_ACCUM_ALPHA bits) */ |
| 50 | }; |
| 51 | |
| 52 | //--------------------------------------------------------------------------- |
| 53 | // classes |
| 54 | //--------------------------------------------------------------------------- |
| 55 | |
| 56 | class WXDLLEXPORT wxGLContext; |
| 57 | class WXDLLEXPORT wxGLCanvas; |
| 58 | |
| 59 | //--------------------------------------------------------------------------- |
| 60 | // wxGLContext |
| 61 | //--------------------------------------------------------------------------- |
| 62 | |
| 63 | |
| 64 | class WXDLLEXPORT wxGLContext: public wxObject |
| 65 | { |
| 66 | public: |
| 67 | wxGLContext( bool isRGB, wxWindow *win, const wxPalette& palette = wxNullPalette ); |
| 68 | wxGLContext( |
| 69 | bool WXUNUSED(isRGB), wxWindow *win, |
| 70 | const wxPalette& WXUNUSED(palette), |
| 71 | const wxGLContext *other /* for sharing display lists */ |
| 72 | ); |
| 73 | ~wxGLContext(); |
| 74 | |
| 75 | void SetCurrent(); |
| 76 | void SetColour(const wxChar *colour); |
| 77 | void SwapBuffers(); |
| 78 | |
| 79 | void SetupPixelFormat(); |
| 80 | void SetupPalette(const wxPalette& palette); |
| 81 | wxPalette CreateDefaultPalette(); |
| 82 | |
| 83 | inline wxPalette* GetPalette() const { return (wxPalette*) & m_palette; } |
| 84 | inline wxWindow* GetWindow() const { return m_window; } |
| 85 | inline GtkWidget* GetWidget() const { return m_widget; } |
| 86 | inline GLXContext GetContext() const { return m_glContext; } |
| 87 | |
| 88 | public: |
| 89 | GLXContext m_glContext; |
| 90 | |
| 91 | GtkWidget *m_widget; |
| 92 | wxPalette m_palette; |
| 93 | wxWindow* m_window; |
| 94 | |
| 95 | private: |
| 96 | DECLARE_CLASS(wxGLContext) |
| 97 | }; |
| 98 | |
| 99 | //--------------------------------------------------------------------------- |
| 100 | // wxGLCanvas |
| 101 | //--------------------------------------------------------------------------- |
| 102 | |
| 103 | class WXDLLEXPORT wxGLCanvas: public wxWindow |
| 104 | { |
| 105 | public: |
| 106 | inline wxGLCanvas() { |
| 107 | m_glContext = (wxGLContext*) NULL; |
| 108 | m_sharedContext = (wxGLContext*) NULL; |
| 109 | m_glWidget = (GtkWidget*) NULL; |
| 110 | m_vi = (void*) NULL; |
| 111 | m_exposed = FALSE; |
| 112 | } |
| 113 | wxGLCanvas( wxWindow *parent, wxWindowID id = -1, |
| 114 | const wxPoint& pos = wxDefaultPosition, |
| 115 | const wxSize& size = wxDefaultSize, |
| 116 | long style = 0, const wxString& name = wxGLCanvasName, |
| 117 | int *attribList = (int*) NULL, |
| 118 | const wxPalette& palette = wxNullPalette ); |
| 119 | wxGLCanvas( 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 = wxGLCanvasName, |
| 124 | int *attribList = (int*) NULL, |
| 125 | const wxPalette& palette = wxNullPalette ); |
| 126 | wxGLCanvas( wxWindow *parent, const wxGLCanvas *shared = (wxGLCanvas *)NULL, |
| 127 | wxWindowID id = -1, |
| 128 | const wxPoint& pos = wxDefaultPosition, |
| 129 | const wxSize& size = wxDefaultSize, |
| 130 | long style = 0, const wxString& name = wxGLCanvasName, |
| 131 | int *attribList = (int*) NULL, |
| 132 | const wxPalette& palette = wxNullPalette ); |
| 133 | |
| 134 | bool Create( wxWindow *parent, |
| 135 | const wxGLContext *shared = (wxGLContext*)NULL, |
| 136 | const wxGLCanvas *shared_context_of = (wxGLCanvas*)NULL, |
| 137 | wxWindowID id = -1, |
| 138 | const wxPoint& pos = wxDefaultPosition, |
| 139 | const wxSize& size = wxDefaultSize, |
| 140 | long style = 0, |
| 141 | const wxString& name = wxGLCanvasName, |
| 142 | int *attribList = (int*) NULL, |
| 143 | const wxPalette& palette = wxNullPalette ); |
| 144 | |
| 145 | ~wxGLCanvas(); |
| 146 | |
| 147 | void SetCurrent(); |
| 148 | void SetColour(const wxChar *colour); |
| 149 | void SwapBuffers(); |
| 150 | |
| 151 | void OnSize(wxSizeEvent& event); |
| 152 | |
| 153 | void OnInternalIdle(); |
| 154 | |
| 155 | inline wxGLContext* GetContext() const { return m_glContext; } |
| 156 | |
| 157 | // implementation |
| 158 | |
| 159 | wxGLContext *m_glContext, |
| 160 | *m_sharedContext; |
| 161 | wxGLCanvas *m_sharedContextOf; |
| 162 | void *m_vi; // actually an XVisualInfo* |
| 163 | bool m_canFreeVi; |
| 164 | GtkWidget *m_glWidget; |
| 165 | bool m_exposed; |
| 166 | |
| 167 | // returns an XVisualInfo* based on desired GL attributes; |
| 168 | // returns NULL if an appropriate visual is not found. The |
| 169 | // caller is reponsible for using XFree() to deallocate |
| 170 | // the returned structure. |
| 171 | static void* ChooseGLVisual(int *attribList); |
| 172 | |
| 173 | private: |
| 174 | DECLARE_EVENT_TABLE() |
| 175 | DECLARE_CLASS(wxGLCanvas) |
| 176 | }; |
| 177 | |
| 178 | #endif |
| 179 | // _WX_GLCANVAS_H_ |
| 180 | |