1 files changed, 114 insertions, 0 deletions
diff --git a/fltk/fltk/gl.h b/fltk/fltk/gl.h
new file mode 100644
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+++ b/fltk/fltk/gl.h
@@ -0,0 +1,114 @@
+// "$Id: gl.h 6233 2008-09-14 07:54:06Z spitzak $"
+// Copyright 1998-2006 by Bill Spitzak and others.
+//
+// You must include this instead of GL/gl.h to get the Microsoft
+// APIENTRY stuff included (from <windows.h>) prior to the OpenGL
+// header files.
+//
+// This file also provides "missing" OpenGL functions, and
+// gl_start() and gl_finish() to allow OpenGL to be used in any window
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Library General Public
+// License as published by the Free Software Foundation; either
+// version 2 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// Library General Public License for more details.
+//
+// You should have received a copy of the GNU Library General Public
+// License along with this library; if not, write to the Free Software
+// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+// USA.
+//
+// Please report all bugs and problems to "fltk-bugs@fltk.org".
+
+/*! \file
+  Portably include the OpenGL header files, and define a few OpenGL
+  drawing functions provided by fltk. You may want to use the
+  OpenGL Extension Wrangler (glew), which will make it much easier
+  to call modern OpenGL extensions. If so, include glew.h before
+  this file, or define USE_GLEW to 1 before including this.
+*/
+
+#ifndef gl_draw_H
+#define gl_draw_H
+
+#ifndef DOXYGEN
+#include "Color.h"
+#include "Flags.h"
+
+#if USE_GLEW
+# include <GL/glew.h>
+#elif defined(__GLEW_H__)
+  /* do nothing if they included glew.h */
+#else
+
+# define GL_GLEXT_PROTOTYPES 1
+# ifdef _WIN32
+#  include <windows.h>
+#  undef OPAQUE
+#  undef DELETE
+#  undef ERROR
+#  undef IN
+#  undef OUT
+#  undef POINT
+#  undef far
+#  undef max
+#  undef min
+#  undef near
+#  include <GL/gl.h>
+# elif defined(__APPLE__)
+#  ifndef APIENTRY
+#   define APIENTRY
+#  endif
+#  include <OpenGL/gl.h>
+# else
+#  include <GL/gl.h>
+# endif
+
+# if !defined(GL_VERSION_1_4) || defined(DOXYGEN)
+FL_GL_API void glWindowPos2i(int x, int y);
+# endif
+
+#endif
+#endif
+
+namespace fltk {
+
+struct Font;
+
+/// \name fltk/gl.h
+//@{
+
+FL_GL_API void glstart();
+FL_GL_API void glfinish();
+
+FL_GL_API void glsetcolor(Color);
+
+FL_GL_API void glstrokerect(int x,int y,int w,int h);
+inline void glfillrect(int x,int y,int w,int h) {glRecti(x,y,x+w,y+h);}
+
+FL_GL_API void glsetfont(Font* f, float size);
+FL_GL_API float glgetascent();
+FL_GL_API float glgetdescent();
+FL_GL_API float glgetwidth(const char *);
+FL_GL_API float glgetwidth(const char *, int n);
+
+FL_GL_API void gldrawtext(const char*);
+FL_GL_API void gldrawtext(const char*, int n);
+FL_GL_API void gldrawtext(const char*, float x, float y, float z = 0);
+FL_GL_API void gldrawtext(const char*, int n, float x, float y, float z = 0);
+
+FL_GL_API void gldrawimage(const uchar *, int x,int y,int w,int h, int d=3, int ld=0);
+
+//@}
+
+}
+#endif
+
+//
+// End of "$Id: gl.h 6233 2008-09-14 07:54:06Z spitzak $".
+//