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fltk/FL/glut.H
Bill Spitzak 97234fb3e2 Replaced remaining _WIN32 symbols with WIN32 
Stuff from work:

Removed reference to unused GL/glu.h header file, which is missing on
some Linux systems.

Fl_Gl_Window has a new method to allow you to get and set the context:

  void Fl_Gl_Window::context(void*, int destroy = 0)
  void* Fl_Gl_Window::context() const;

  Return or set a pointer to the GLContext that this window is
  using. This is a system-dependent structure, but it is portable to
  copy the context from one window to another. You can also set it to
  NULL, which will force FLTK to recreate the context the next time
  make_current() is called, this is useful for getting around bugs in
  OpenGL implementations.

  If destroy_flag is true the context will be destroyed by fltk when
  the window is destroyed, or when the mode() is changed, or the next
  time context(x) is called.

Some cleanup of Fl_Gl_Choice to move most of the system dependent
#ifdefs into Fl_Gl_Choice.cxx.


git-svn-id: file:///fltk/svn/fltk/branches/branch-1.0@1413 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
2001-03-14 17:20:02 +00:00

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//
// "$Id: glut.H,v 1.6.2.10 2001/03/14 17:20:01 spitzak Exp $"
//
// GLUT emulation header file for the Fast Light Tool Kit (FLTK).
//
// Copyright 1998-2001 by Bill Spitzak and others.
//
// 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".
//
// Emulation of Glut using fltk.
// GLUT is Copyright (c) Mark J. Kilgard, 1994, 1995, 1996:
// "This program is freely distributable without licensing fees and is
// provided without guarantee or warrantee expressed or implied. This
// program is -not- in the public domain."
// Although I have copied the GLUT API, none of my code is based on
// any Glut implementation details and is therefore covered by the LGPL.
// Fltk does not include the Glut drawing functions (such as
// glutWireTeapot()) or the stroke fonts but the declarations for the
// drawing functions are included here because otherwise there is no
// way to get them along with this. To use them you will have to
// link in the original Glut library, put -lglut *after* -lfltk.
// Commented out lines indicate parts of Glut that are not emulated.
#ifndef __glut_h__
#define __glut_h__
#include <FL/gl.h>
//#include <GL/glu.h>
////////////////////////////////////////////////////////////////
// Glut is emulated using this window class and these static variables
// (plus several more static variables hidden in glut.C):
#include "Fl.H"
#include "Fl_Gl_Window.H"
class Fl_Glut_Window : public Fl_Gl_Window {
FL_EXPORT void _init();
int mouse_down;
protected:
FL_EXPORT void draw();
FL_EXPORT void draw_overlay();
FL_EXPORT int handle(int);
public: // so the inline functions work
int number;
int menu[3];
FL_EXPORT void make_current();
void (*display)();
void (*overlaydisplay)();
void (*reshape)(int w, int h);
void (*keyboard)(uchar, int x, int y);
void (*mouse)(int b, int state, int x, int y);
void (*motion)(int x, int y);
void (*passivemotion)(int x, int y);
void (*entry)(int);
void (*visibility)(int);
void (*special)(int, int x, int y);
FL_EXPORT Fl_Glut_Window(int w, int h, const char *);
FL_EXPORT Fl_Glut_Window(int x, int y, int w, int h, const char *);
FL_EXPORT ~Fl_Glut_Window();
};
extern FL_EXPORT Fl_Glut_Window *glut_window; // the current window
extern FL_EXPORT int glut_menu; // the current menu
// function pointers that are not per-window:
extern FL_EXPORT void (*glut_idle_function)();
extern FL_EXPORT void (*glut_menustate_function)(int);
extern FL_EXPORT void (*glut_menustatus_function)(int,int,int);
////////////////////////////////////////////////////////////////
//#define GLUT_API_VERSION This does not match any version of Glut exactly...
FL_EXPORT void glutInit(int *argcp, char **argv); // creates first window
FL_EXPORT void glutInitDisplayMode(unsigned int mode);
// the FL_ symbols have the same value as the GLUT ones:
#define GLUT_RGB FL_RGB
#define GLUT_RGBA FL_RGB
#define GLUT_INDEX FL_INDEX
#define GLUT_SINGLE FL_SINGLE
#define GLUT_DOUBLE FL_DOUBLE
#define GLUT_ACCUM FL_ACCUM
#define GLUT_ALPHA FL_ALPHA
#define GLUT_DEPTH FL_DEPTH
#define GLUT_STENCIL FL_STENCIL
#define GLUT_MULTISAMPLE FL_MULTISAMPLE
// #define GLUT_STEREO 256
// #define GLUT_LUMINANCE 512
FL_EXPORT void glutInitWindowPosition(int x, int y);
FL_EXPORT void glutInitWindowSize(int w, int h);
FL_EXPORT void glutMainLoop();
FL_EXPORT int glutCreateWindow(char *title);
FL_EXPORT int glutCreateSubWindow(int win, int x, int y, int width, int height);
FL_EXPORT void glutDestroyWindow(int win);
inline void glutPostRedisplay() {glut_window->redraw();}
FL_EXPORT void glutSwapBuffers();
inline int glutGetWindow() {return glut_window->number;}
FL_EXPORT void glutSetWindow(int win);
inline void glutSetWindowTitle(char *t) {glut_window->label(t);}
inline void glutSetIconTitle(char *t) {glut_window->iconlabel(t);}
inline void glutPositionWindow(int x, int y) {glut_window->position(x,y);}
inline void glutReshapeWindow(int w, int h) {glut_window->size(w,h);}
inline void glutPopWindow() {glut_window->show();}
//inline void glutPushWindow();
inline void glutIconifyWindow() {glut_window->iconize();}
inline void glutShowWindow() {glut_window->show();}
inline void glutHideWindow() {glut_window->hide();}
inline void glutFullScreen() {glut_window->fullscreen();}
inline void glutSetCursor(Fl_Cursor cursor) {glut_window->cursor(cursor);}
// notice that the numeric values are different than glut:
#define GLUT_CURSOR_RIGHT_ARROW ((Fl_Cursor)2)
#define GLUT_CURSOR_LEFT_ARROW ((Fl_Cursor)67)
#define GLUT_CURSOR_INFO FL_CURSOR_HAND
#define GLUT_CURSOR_DESTROY ((Fl_Cursor)45)
#define GLUT_CURSOR_HELP FL_CURSOR_HELP
#define GLUT_CURSOR_CYCLE ((Fl_Cursor)26)
#define GLUT_CURSOR_SPRAY ((Fl_Cursor)63)
#define GLUT_CURSOR_WAIT FL_CURSOR_WAIT
#define GLUT_CURSOR_TEXT FL_CURSOR_INSERT
#define GLUT_CURSOR_CROSSHAIR FL_CURSOR_CROSS
#define GLUT_CURSOR_UP_DOWN FL_CURSOR_NS
#define GLUT_CURSOR_LEFT_RIGHT FL_CURSOR_WE
#define GLUT_CURSOR_TOP_SIDE FL_CURSOR_N
#define GLUT_CURSOR_BOTTOM_SIDE FL_CURSOR_S
#define GLUT_CURSOR_LEFT_SIDE FL_CURSOR_W
#define GLUT_CURSOR_RIGHT_SIDE FL_CURSOR_E
#define GLUT_CURSOR_TOP_LEFT_CORNER FL_CURSOR_NW
#define GLUT_CURSOR_TOP_RIGHT_CORNER FL_CURSOR_NE
#define GLUT_CURSOR_BOTTOM_RIGHT_CORNER FL_CURSOR_SE
#define GLUT_CURSOR_BOTTOM_LEFT_CORNER FL_CURSOR_SW
#define GLUT_CURSOR_INHERIT FL_CURSOR_DEFAULT
#define GLUT_CURSOR_NONE FL_CURSOR_NONE
#define GLUT_CURSOR_FULL_CROSSHAIR FL_CURSOR_CROSS
//inline void glutWarpPointer(int x, int y);
inline void glutEstablishOverlay() {glut_window->make_overlay_current();}
inline void glutRemoveOverlay() {glut_window->hide_overlay();}
inline void glutUseLayer(GLenum layer) {
layer ? glut_window->make_overlay_current() : glut_window->make_current();}
enum {GLUT_NORMAL, GLUT_OVERLAY};
inline void glutPostOverlayRedisplay() {glut_window->redraw_overlay();}
inline void glutShowOverlay() {glut_window->redraw_overlay();}
inline void glutHideOverlay() {glut_window->hide_overlay();}
FL_EXPORT int glutCreateMenu(void (*)(int));
FL_EXPORT void glutDestroyMenu(int menu);
inline int glutGetMenu() {return glut_menu;}
inline void glutSetMenu(int m) {glut_menu = m;}
FL_EXPORT void glutAddMenuEntry(char *label, int value);
FL_EXPORT void glutAddSubMenu(char *label, int submenu);
FL_EXPORT void glutChangeToMenuEntry(int item, char *label, int value);
FL_EXPORT void glutChangeToSubMenu(int item, char *label, int submenu);
FL_EXPORT void glutRemoveMenuItem(int item);
inline void glutAttachMenu(int b) {glut_window->menu[b] = glut_menu;}
inline void glutDetachMenu(int b) {glut_window->menu[b] = 0;}
inline void glutDisplayFunc(void (*f)()) {glut_window->display = f;}
inline void glutReshapeFunc(void (*f)(int w, int h)) {glut_window->reshape=f;}
inline void glutKeyboardFunc(void (*f)(uchar key, int x, int y)) {
glut_window->keyboard = f;}
inline void glutMouseFunc(void (*f)(int b, int state, int x, int y)) {
glut_window->mouse = f;}
#define GLUT_LEFT_BUTTON 0
#define GLUT_MIDDLE_BUTTON 1
#define GLUT_RIGHT_BUTTON 2
#define GLUT_DOWN 0
#define GLUT_UP 1
inline void glutMotionFunc(void (*f)(int x, int y)) {glut_window->motion= f;}
inline void glutPassiveMotionFunc(void (*f)(int x, int y)) {
glut_window->passivemotion= f;}
inline void glutEntryFunc(void (*f)(int s)) {glut_window->entry = f;}
enum {GLUT_LEFT, GLUT_ENTERED};
inline void glutVisibilityFunc(void (*f)(int s)) {glut_window->visibility=f;}
enum {GLUT_NOT_VISIBLE, GLUT_VISIBLE};
inline void glutIdleFunc(void (*f)()) {Fl::set_idle(f);}
// Warning: this cast may not work on all machines:
inline void glutTimerFunc(unsigned int msec, void (*f)(int), int value) {
Fl::add_timeout(msec*.001, (void (*)(void *))f, (void *)value);
}
inline void glutMenuStateFunc(void (*f)(int state)) {
glut_menustate_function = f;}
inline void glutMenuStatusFunc(void (*f)(int status, int x, int y)) {
glut_menustatus_function = f;}
enum {GLUT_MENU_NOT_IN_USE, GLUT_MENU_IN_USE};
inline void glutSpecialFunc(void (*f)(int key, int x, int y)) {
glut_window->special = f;}
#define GLUT_KEY_F1 1
#define GLUT_KEY_F2 2
#define GLUT_KEY_F3 3
#define GLUT_KEY_F4 4
#define GLUT_KEY_F5 5
#define GLUT_KEY_F6 6
#define GLUT_KEY_F7 7
#define GLUT_KEY_F8 8
#define GLUT_KEY_F9 9
#define GLUT_KEY_F10 10
#define GLUT_KEY_F11 11
#define GLUT_KEY_F12 12
// WARNING: Different values than Glut uses:
#define GLUT_KEY_LEFT FL_Left
#define GLUT_KEY_UP FL_Up
#define GLUT_KEY_RIGHT FL_Right
#define GLUT_KEY_DOWN FL_Down
#define GLUT_KEY_PAGE_UP FL_Page_Up
#define GLUT_KEY_PAGE_DOWN FL_Page_Down
#define GLUT_KEY_HOME FL_Home
#define GLUT_KEY_END FL_End
#define GLUT_KEY_INSERT FL_Insert
//inline void glutSpaceballMotionFunc(void (*)(int x, int y, int z));
//inline void glutSpaceballRotateFunc(void (*)(int x, int y, int z));
//inline void glutSpaceballButtonFunc(void (*)(int button, int state));
//inline void glutButtonBoxFunc(void (*)(int button, int state));
//inline void glutDialsFunc(void (*)(int dial, int value));
//inline void glutTabletMotionFunc(void (*)(int x, int y));
//inline void glutTabletButtonFunc(void (*)(int button, int state, int x, int y));
inline void glutOverlayDisplayFunc(void (*f)()) {
glut_window->overlaydisplay = f;}
//inline void glutWindowStatusFunc(void (*)(int state));
//enum {GLUT_HIDDEN, GLUT_FULLY_RETAINED, GLUT_PARTIALLY_RETAINED,
// GLUT_FULLY_COVERED};
//inline void glutSetColor(int, GLfloat red, GLfloat green, GLfloat blue);
//inline GLfloat glutGetColor(int ndx, int component);
//#define GLUT_RED 0
//#define GLUT_GREEN 1
//#define GLUT_BLUE 2
//inline void glutCopyColormap(int win);
// Warning: values are changed from Glut!
// Also relies on the GL_ symbols having values greater than 100
int glutGet(GLenum type);
enum {
GLUT_RETURN_ZERO = 0,
GLUT_WINDOW_X,
GLUT_WINDOW_Y,
GLUT_WINDOW_WIDTH,
GLUT_WINDOW_HEIGHT,
GLUT_WINDOW_PARENT,
//GLUT_WINDOW_NUM_CHILDREN,
//GLUT_WINDOW_CURSOR,
GLUT_SCREEN_WIDTH,
GLUT_SCREEN_HEIGHT,
//GLUT_SCREEN_WIDTH_MM,
//GLUT_SCREEN_HEIGHT_MM,
GLUT_MENU_NUM_ITEMS,
GLUT_DISPLAY_MODE_POSSIBLE,
GLUT_INIT_WINDOW_X,
GLUT_INIT_WINDOW_Y,
GLUT_INIT_WINDOW_WIDTH,
GLUT_INIT_WINDOW_HEIGHT,
GLUT_INIT_DISPLAY_MODE,
//GLUT_ELAPSED_TIME,
GLUT_WINDOW_BUFFER_SIZE
};
#define GLUT_WINDOW_STENCIL_SIZE GL_STENCIL_BITS
#define GLUT_WINDOW_DEPTH_SIZE GL_DEPTH_BITS
#define GLUT_WINDOW_RED_SIZE GL_RED_BITS
#define GLUT_WINDOW_GREEN_SIZE GL_GREEN_BITS
#define GLUT_WINDOW_BLUE_SIZE GL_BLUE_BITS
#define GLUT_WINDOW_ALPHA_SIZE GL_ALPHA_BITS
#define GLUT_WINDOW_ACCUM_RED_SIZE GL_ACCUM_RED_BITS
#define GLUT_WINDOW_ACCUM_GREEN_SIZE GL_ACCUM_GREEN_BITS
#define GLUT_WINDOW_ACCUM_BLUE_SIZE GL_ACCUM_BLUE_BITS
#define GLUT_WINDOW_ACCUM_ALPHA_SIZE GL_ACCUM_ALPHA_BITS
#define GLUT_WINDOW_DOUBLEBUFFER GL_DOUBLEBUFFER
#define GLUT_WINDOW_RGBA GL_RGBA
#define GLUT_WINDOW_COLORMAP_SIZE GL_INDEX_BITS
#ifdef GL_SAMPLES_SGIS
#define GLUT_WINDOW_NUM_SAMPLES GL_SAMPLES_SGIS
#else
#define GLUT_WINDOW_NUM_SAMPLES GLUT_RETURN_ZERO
#endif
#define GLUT_WINDOW_STEREO GL_STEREO
//int glutDeviceGet(GLenum type);
//#define GLUT_HAS_KEYBOARD 600
//#define GLUT_HAS_MOUSE 601
//#define GLUT_HAS_SPACEBALL 602
//#define GLUT_HAS_DIAL_AND_BUTTON_BOX 603
//#define GLUT_HAS_TABLET 604
//#define GLUT_NUM_MOUSE_BUTTONS 605
//#define GLUT_NUM_SPACEBALL_BUTTONS 606
//#define GLUT_NUM_BUTTON_BOX_BUTTONS 607
//#define GLUT_NUM_DIALS 608
//#define GLUT_NUM_TABLET_BUTTONS 609
inline int glutGetModifiers() {return Fl::event_state();}
// WARNING: these values are different than Glut uses:
#define GLUT_ACTIVE_SHIFT FL_SHIFT
#define GLUT_ACTIVE_CTRL FL_CTRL
#define GLUT_ACTIVE_ALT FL_ALT
int glutLayerGet(GLenum);
#define GLUT_OVERLAY_POSSIBLE 800
//#define GLUT_LAYER_IN_USE 801
//#define GLUT_HAS_OVERLAY 802
#define GLUT_TRANSPARENT_INDEX 803
#define GLUT_NORMAL_DAMAGED 804
#define GLUT_OVERLAY_DAMAGED 805
//inline int glutVideoResizeGet(GLenum param);
//#define GLUT_VIDEO_RESIZE_POSSIBLE 900
//#define GLUT_VIDEO_RESIZE_IN_USE 901
//#define GLUT_VIDEO_RESIZE_X_DELTA 902
//#define GLUT_VIDEO_RESIZE_Y_DELTA 903
//#define GLUT_VIDEO_RESIZE_WIDTH_DELTA 904
//#define GLUT_VIDEO_RESIZE_HEIGHT_DELTA 905
//#define GLUT_VIDEO_RESIZE_X 906
//#define GLUT_VIDEO_RESIZE_Y 907
//#define GLUT_VIDEO_RESIZE_WIDTH 908
//#define GLUT_VIDEO_RESIZE_HEIGHT 909
//inline void glutSetupVideoResizing();
//inline void glutStopVideoResizing();
//inline void glutVideoResize(int x, int y, int width, int height);
//inline void glutVideoPan(int x, int y, int width, int height);
////////////////////////////////////////////////////////////////
// Emulated Glut drawing functions:
// Font argument must be a void* for compatability, so...
extern FL_EXPORT struct Glut_Bitmap_Font {uchar font; int size;}
glutBitmap9By15, glutBitmap8By13, glutBitmapTimesRoman10,
glutBitmapTimesRoman24, glutBitmapHelvetica10, glutBitmapHelvetica12,
glutBitmapHelvetica18;
#define GLUT_BITMAP_9_BY_15 (&glutBitmap9By15)
#define GLUT_BITMAP_8_BY_13 (&glutBitmap8By13)
#define GLUT_BITMAP_TIMES_ROMAN_10 (&glutBitmapTimesRoman10)
#define GLUT_BITMAP_TIMES_ROMAN_24 (&glutBitmapTimesRoman24)
#define GLUT_BITMAP_HELVETICA_10 (&glutBitmapHelvetica10)
#define GLUT_BITMAP_HELVETICA_12 (&glutBitmapHelvetica12)
#define GLUT_BITMAP_HELVETICA_18 (&glutBitmapHelvetica18)
FL_EXPORT void glutBitmapCharacter(void *font, int character);
FL_EXPORT int glutBitmapWidth(void *font, int character);
////////////////////////////////////////////////////////////////
// Glut drawing functions. These are NOT emulated but you can
// link in the glut library to get them. This assummes the object
// files in Glut remain as they currently are so that there are
// not symbol conflicts with the above.
extern "C" {
extern int APIENTRY glutExtensionSupported(char *name);
/* Stroke font constants (use these in GLUT program). */
#ifdef WIN32
# define GLUT_STROKE_ROMAN ((void*)0)
# define GLUT_STROKE_MONO_ROMAN ((void*)1)
#else
extern void *glutStrokeRoman;
# define GLUT_STROKE_ROMAN (&glutStrokeRoman)
extern void *glutStrokeMonoRoman;
# define GLUT_STROKE_MONO_ROMAN (&glutStrokeMonoRoman)
#endif
/* GLUT font sub-API */
extern void APIENTRY glutStrokeCharacter(void *font, int character);
extern int APIENTRY glutStrokeWidth(void *font, int character);
/* GLUT pre-built models sub-API */
extern void APIENTRY glutWireSphere(GLdouble radius, GLint slices, GLint stacks);
extern void APIENTRY glutSolidSphere(GLdouble radius, GLint slices, GLint stacks);
extern void APIENTRY glutWireCone(GLdouble base, GLdouble height, GLint slices, GLint stacks);
extern void APIENTRY glutSolidCone(GLdouble base, GLdouble height, GLint slices, GLint stacks);
extern void APIENTRY glutWireCube(GLdouble size);
extern void APIENTRY glutSolidCube(GLdouble size);
extern void APIENTRY glutWireTorus(GLdouble innerRadius, GLdouble outerRadius, GLint sides, GLint rings);
extern void APIENTRY glutSolidTorus(GLdouble innerRadius, GLdouble outerRadius, GLint sides, GLint rings);
extern void APIENTRY glutWireDodecahedron();
extern void APIENTRY glutSolidDodecahedron();
extern void APIENTRY glutWireTeapot(GLdouble size);
extern void APIENTRY glutSolidTeapot(GLdouble size);
extern void APIENTRY glutWireOctahedron();
extern void APIENTRY glutSolidOctahedron();
extern void APIENTRY glutWireTetrahedron();
extern void APIENTRY glutSolidTetrahedron();
extern void APIENTRY glutWireIcosahedron();
extern void APIENTRY glutSolidIcosahedron();
}
#endif /* __glut_h__ */
//
// End of "$Id: glut.H,v 1.6.2.10 2001/03/14 17:20:01 spitzak Exp $".
//
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