4 * The freeglut library private include file.
6 * Copyright (c) 1999-2000 Pawel W. Olszta. All Rights Reserved.
7 * Written by Pawel W. Olszta, <olszta@sourceforge.net>
8 * Creation date: Thu Dec 2 1999
10 * Permission is hereby granted, free of charge, to any person obtaining a
11 * copy of this software and associated documentation files (the "Software"),
12 * to deal in the Software without restriction, including without limitation
13 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
14 * and/or sell copies of the Software, and to permit persons to whom the
15 * Software is furnished to do so, subject to the following conditions:
17 * The above copyright notice and this permission notice shall be included
18 * in all copies or substantial portions of the Software.
20 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
21 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
22 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
23 * PAWEL W. OLSZTA BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
24 * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
25 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
28 #ifndef FREEGLUT_INTERNAL_H
29 #define FREEGLUT_INTERNAL_H
35 #include "fg_version.h"
37 /* Freeglut is intended to function under all Unix/X11 and Win32 platforms. */
38 /* XXX: Don't all MS-Windows compilers (except Cygwin) have _WIN32 defined?
39 * XXX: If so, remove the first set of defined()'s below.
41 #if !defined(TARGET_HOST_POSIX_X11) && !defined(TARGET_HOST_MS_WINDOWS) && !defined(TARGET_HOST_MAC_OSX) && !defined(TARGET_HOST_SOLARIS)
42 #if defined(_MSC_VER) || defined(__WATCOMC__) || defined(__MINGW32__) \
43 || defined(_WIN32) || defined(_WIN32_WCE) \
44 || ( defined(__CYGWIN__) && defined(X_DISPLAY_MISSING) )
45 # define TARGET_HOST_MS_WINDOWS 1
47 #elif defined (__ANDROID__)
48 # define TARGET_HOST_ANDROID 1
50 #elif defined (__QNXNTO__) || defined (__PLAYBOOK__)
51 # define TARGET_HOST_BLACKBERRY 1
53 #elif defined(__posix__) || defined(__unix__) || defined(__linux__) || defined(__sun)
54 # if defined(FREEGLUT_WAYLAND)
55 # define TARGET_HOST_POSIX_WAYLAND 1
57 # define TARGET_HOST_POSIX_X11 1
60 #elif defined(__APPLE__)
61 /* This is a placeholder until we get native OSX support ironed out -- JFF 11/18/09 */
62 # define TARGET_HOST_POSIX_X11 1
63 /* # define TARGET_HOST_MAC_OSX 1 */
66 # error "Unrecognized target host!"
71 /* Detect both SunPro and gcc compilers on Sun Solaris */
72 #if defined (__SVR4) && defined (__sun)
73 # define TARGET_HOST_SOLARIS 1
76 #ifndef TARGET_HOST_MS_WINDOWS
77 # define TARGET_HOST_MS_WINDOWS 0
80 #ifndef TARGET_HOST_ANDROID
81 # define TARGET_HOST_ANDROID 0
84 #ifndef TARGET_HOST_BLACKBERRY
85 # define TARGET_HOST_BLACKBERRY 0
88 #ifndef TARGET_HOST_POSIX_WAYLAND
89 # define TARGET_HOST_POSIX_WAYLAND 0
92 #ifndef TARGET_HOST_POSIX_X11
93 # define TARGET_HOST_POSIX_X11 0
96 #ifndef TARGET_HOST_MAC_OSX
97 # define TARGET_HOST_MAC_OSX 0
100 #ifndef TARGET_HOST_SOLARIS
101 # define TARGET_HOST_SOLARIS 0
104 /* -- FIXED CONFIGURATION LIMITS ------------------------------------------- */
106 #define FREEGLUT_MAX_MENUS 3
108 /* These files should be available on every platform. */
115 /* These are included based on autoconf directives. */
116 #ifdef HAVE_SYS_TYPES_H
117 # include <sys/types.h>
122 #ifdef TIME_WITH_SYS_TIME
123 # include <sys/time.h>
125 #elif defined(HAVE_SYS_TIME_H)
126 # include <sys/time.h>
131 /* -- AUTOCONF HACKS --------------------------------------------------------*/
133 /* XXX: Update autoconf to avoid these.
134 * XXX: Are non-POSIX platforms intended not to use autoconf?
135 * If so, perhaps there should be a config_guess.h for them. Alternatively,
136 * config guesses could be placed above, just after the config.h exclusion.
138 #if defined(__FreeBSD__) || defined(__NetBSD__)
139 # define HAVE_USB_JS 1
140 # if defined(__NetBSD__) || ( defined(__FreeBSD__) && __FreeBSD_version >= 500000)
141 # define HAVE_USBHID_H 1
145 #if defined(_MSC_VER) || defined(__WATCOMC__)
146 /* strdup() is non-standard, for all but POSIX-2001 */
147 #define strdup _strdup
150 /* M_PI is non-standard (defined by BSD, not ISO-C) */
152 # define M_PI 3.14159265358979323846
155 #ifdef HAVE_STDBOOL_H
156 # include <stdbool.h>
172 /* General defines */
173 #define INVALID_MODIFIERS 0xffffffff
175 /* FreeGLUT internal time type */
176 #if defined(HAVE_STDINT_H)
178 typedef uint64_t fg_time_t;
179 #elif defined(HAVE_INTTYPES_H)
180 # include <inttypes.h>
181 typedef uint64_t fg_time_t;
182 #elif defined(HAVE_U__INT64)
183 typedef unsigned __int64 fg_time_t;
184 #elif defined(HAVE_ULONG_LONG)
185 typedef unsigned long long fg_time_t;
187 typedef unsigned long fg_time_t;
192 # define __fg_unused __attribute__((unused))
198 /* Platform-specific includes */
199 #if TARGET_HOST_POSIX_WAYLAND
200 #include "wayland/fg_internal_wl.h"
202 #if TARGET_HOST_POSIX_X11
203 #include "x11/fg_internal_x11.h"
205 #if TARGET_HOST_MS_WINDOWS
206 #include "mswin/fg_internal_mswin.h"
208 #if TARGET_HOST_ANDROID
209 #include "android/fg_internal_android.h"
211 #if TARGET_HOST_BLACKBERRY
212 #include "blackberry/fg_internal_blackberry.h"
216 /* -- GLOBAL TYPE DEFINITIONS ---------------------------------------------- */
218 /* Freeglut callbacks type definitions */
219 typedef void* FGCBUserData;
221 typedef void (* FGCBDisplay )( void );
222 typedef void (* FGCBDisplayUC )( FGCBUserData );
223 typedef void (* FGCBReshape )( int, int );
224 typedef void (* FGCBReshapeUC )( int, int, FGCBUserData );
225 typedef void (* FGCBPosition )( int, int );
226 typedef void (* FGCBPositionUC )( int, int, FGCBUserData );
227 typedef void (* FGCBVisibility )( int );
228 typedef void (* FGCBVisibilityUC )( int, FGCBUserData );
229 typedef void (* FGCBKeyboard )( unsigned char, int, int );
230 typedef void (* FGCBKeyboardUC )( unsigned char, int, int, FGCBUserData );
231 typedef void (* FGCBKeyboardUp )( unsigned char, int, int );
232 typedef void (* FGCBKeyboardUpUC )( unsigned char, int, int, FGCBUserData );
233 typedef void (* FGCBSpecial )( int, int, int );
234 typedef void (* FGCBSpecialUC )( int, int, int, FGCBUserData );
235 typedef void (* FGCBSpecialUp )( int, int, int );
236 typedef void (* FGCBSpecialUpUC )( int, int, int, FGCBUserData );
237 typedef void (* FGCBMouse )( int, int, int, int );
238 typedef void (* FGCBMouseUC )( int, int, int, int, FGCBUserData );
239 typedef void (* FGCBMouseWheel )( int, int, int, int );
240 typedef void (* FGCBMouseWheelUC )( int, int, int, int, FGCBUserData );
241 typedef void (* FGCBMotion )( int, int );
242 typedef void (* FGCBMotionUC )( int, int, FGCBUserData );
243 typedef void (* FGCBPassive )( int, int );
244 typedef void (* FGCBPassiveUC )( int, int, FGCBUserData );
245 typedef void (* FGCBEntry )( int );
246 typedef void (* FGCBEntryUC )( int, FGCBUserData );
247 typedef void (* FGCBWindowStatus )( int );
248 typedef void (* FGCBWindowStatusUC )( int, FGCBUserData );
249 typedef void (* FGCBJoystick )( unsigned int, int, int, int );
250 typedef void (* FGCBJoystickUC )( unsigned int, int, int, int, FGCBUserData );
251 typedef void (* FGCBOverlayDisplay )( void );
252 typedef void (* FGCBOverlayDisplayUC)( FGCBUserData );
253 typedef void (* FGCBSpaceMotion )( int, int, int );
254 typedef void (* FGCBSpaceMotionUC )( int, int, int, FGCBUserData );
255 typedef void (* FGCBSpaceRotation )( int, int, int );
256 typedef void (* FGCBSpaceRotationUC )( int, int, int, FGCBUserData );
257 typedef void (* FGCBSpaceButton )( int, int );
258 typedef void (* FGCBSpaceButtonUC )( int, int, FGCBUserData );
259 typedef void (* FGCBDials )( int, int );
260 typedef void (* FGCBDialsUC )( int, int, FGCBUserData );
261 typedef void (* FGCBButtonBox )( int, int );
262 typedef void (* FGCBButtonBoxUC )( int, int, FGCBUserData );
263 typedef void (* FGCBTabletMotion )( int, int );
264 typedef void (* FGCBTabletMotionUC )( int, int, FGCBUserData );
265 typedef void (* FGCBTabletButton )( int, int, int, int );
266 typedef void (* FGCBTabletButtonUC )( int, int, int, int, FGCBUserData );
267 typedef void (* FGCBDestroy )( void ); /* Used for both window and menu destroy callbacks */
268 typedef void (* FGCBDestroyUC )( FGCBUserData );
270 typedef void (* FGCBMultiEntry )( int, int );
271 typedef void (* FGCBMultiEntryUC )( int, int, FGCBUserData );
272 typedef void (* FGCBMultiButton )( int, int, int, int, int );
273 typedef void (* FGCBMultiButtonUC )( int, int, int, int, int, FGCBUserData );
274 typedef void (* FGCBMultiMotion )( int, int, int );
275 typedef void (* FGCBMultiMotionUC )( int, int, int, FGCBUserData );
276 typedef void (* FGCBMultiPassive )( int, int, int );
277 typedef void (* FGCBMultiPassiveUC )( int, int, int, FGCBUserData );
279 typedef void (* FGCBInitContext )( void );
280 typedef void (* FGCBInitContextUC )( FGCBUserData );
281 typedef void (* FGCBAppStatus )( int );
282 typedef void (* FGCBAppStatusUC )( int, FGCBUserData );
284 /* The global callbacks type definitions */
285 typedef void (* FGCBIdle )( void ); \
286 typedef void (* FGCBIdleUC )( FGCBUserData );
287 typedef void (* FGCBTimer )( int );
288 typedef void (* FGCBTimerUC )( int, FGCBUserData );
289 typedef void (* FGCBMenuState )( int );
290 typedef void (* FGCBMenuStatus )( int, int, int );
291 typedef void (* FGCBMenuStatusUC )( int, int, int, FGCBUserData );
293 /* The callback used when creating/using menus */
294 typedef void (* FGCBMenu )( int );
295 typedef void (* FGCBMenuUC )( int, FGCBUserData );
297 /* The FreeGLUT error/warning handler type definition */
298 typedef void (* FGError )( const char *fmt, va_list ap );
299 typedef void (* FGErrorUC )( const char *fmt, va_list ap, FGCBUserData userData );
300 typedef void (* FGWarning )( const char *fmt, va_list ap );
301 typedef void (* FGWarningUC )( const char *fmt, va_list ap, FGCBUserData userData );
304 /* A list structure */
305 typedef struct tagSFG_List SFG_List;
312 /* A list node structure */
313 typedef struct tagSFG_Node SFG_Node;
320 /* A helper structure holding two ints and a boolean */
321 typedef struct tagSFG_XYUse SFG_XYUse;
324 GLint X, Y; /* The two integers... */
325 GLboolean Use; /* ...and a single boolean. */
329 * An enumeration containing the state of the GLUT execution:
330 * initializing, running, or stopping
334 GLUT_EXEC_STATE_INIT,
335 GLUT_EXEC_STATE_RUNNING,
339 /* This structure holds different freeglut settings */
340 typedef struct tagSFG_State SFG_State;
343 SFG_XYUse Position; /* The default windows' position */
344 SFG_XYUse Size; /* The default windows' size */
345 unsigned int DisplayMode; /* Display mode for new windows */
347 GLboolean Initialised; /* freeglut has been initialised */
349 int DirectContext; /* Direct rendering state */
351 GLboolean ForceIconic; /* New top windows are iconified */
352 GLboolean UseCurrentContext; /* New windows share with current */
354 GLboolean GLDebugSwitch; /* OpenGL state debugging switch */
355 GLboolean XSyncSwitch; /* X11 sync protocol switch */
357 int KeyRepeat; /* Global key repeat mode. */
358 int Modifiers; /* Current ALT/SHIFT/CTRL state */
360 GLuint FPSInterval; /* Interval between FPS printfs */
361 GLuint SwapCount; /* Count of glutSwapBuffer calls */
362 GLuint SwapTime; /* Time of last SwapBuffers */
364 fg_time_t Time; /* Time that glutInit was called */
365 SFG_List Timers; /* The freeglut timer hooks */
366 SFG_List FreeTimers; /* The unused timer hooks */
368 FGCBIdleUC IdleCallback; /* The global idle callback */
369 FGCBUserData IdleCallbackData; /* The global idle callback data */
371 int ActiveMenus; /* Num. of currently active menus */
372 FGCBMenuState MenuStateCallback; /* Menu callbacks are global */
373 FGCBMenuStatusUC MenuStatusCallback;
374 FGCBUserData MenuStatusCallbackData;
375 void* MenuFont; /* Font to be used for newly created menus */
377 SFG_XYUse GameModeSize; /* Game mode screen's dimensions */
378 int GameModeDepth; /* The pixel depth for game mode */
379 int GameModeRefresh; /* The refresh rate for game mode */
381 int ActionOnWindowClose; /* Action when user closes window */
383 fgExecutionState ExecState; /* Used for GLUT termination */
384 char *ProgramName; /* Name of the invoking program */
385 GLboolean JoysticksInitialised; /* Only initialize if application calls for them */
386 int NumActiveJoysticks; /* Number of active joysticks (callback defined and positive pollrate) -- if zero, don't poll joysticks */
387 GLboolean InputDevsInitialised; /* Only initialize if application calls for them */
389 int MouseWheelTicks; /* Number of ticks the mouse wheel has turned */
391 int AuxiliaryBufferNumber;/* Number of auxiliary buffers */
392 int SampleNumber; /* Number of samples per pixel */
394 GLboolean SkipStaleMotion; /* skip stale motion events */
396 GLboolean StrokeFontDrawJoinDots;/* Draw dots between line segments of stroke fonts? */
397 GLboolean AllowNegativeWindowPosition; /* GLUT, by default, doesn't allow negative window positions. Enable it? */
399 int MajorVersion; /* Major OpenGL context version */
400 int MinorVersion; /* Minor OpenGL context version */
401 int ContextFlags; /* OpenGL context flags */
402 int ContextProfile; /* OpenGL context profile */
403 int HasOpenGL20; /* fgInitGL2 could find all OpenGL 2.0 functions */
404 FGErrorUC ErrorFunc; /* User defined error handler */
405 FGCBUserData ErrorFuncData; /* User defined error handler user data */
406 FGWarningUC WarningFunc; /* User defined warning handler */
407 FGCBUserData WarningFuncData; /* User defined warning handler user data */
410 /* The structure used by display initialization in fg_init.c */
411 typedef struct tagSFG_Display SFG_Display;
412 struct tagSFG_Display
414 SFG_PlatformDisplay pDisplay;
416 int ScreenWidth; /* The screen's width in pixels */
417 int ScreenHeight; /* The screen's height in pixels */
418 int ScreenWidthMM; /* The screen's width in milimeters */
419 int ScreenHeightMM; /* The screen's height in milimeters */
423 /* The user can create any number of timer hooks */
424 typedef struct tagSFG_Timer SFG_Timer;
428 int ID; /* The timer ID integer */
429 FGCBTimerUC Callback; /* The timer callback */
430 FGCBUserData CallbackData; /* The timer callback user data */
431 fg_time_t TriggerTime; /* The timer trigger time */
435 * A window and its OpenGL context. The contents of this structure
436 * are highly dependent on the target operating system we aim at...
438 typedef struct tagSFG_Context SFG_Context;
439 struct tagSFG_Context
441 SFG_WindowHandleType Handle; /* The window's handle */
442 SFG_WindowContextType Context; /* The window's OpenGL/WGL context */
444 SFG_PlatformContext pContext; /* The window's FBConfig (X11) or device context (Windows) */
446 int DoubleBuffered; /* Treat the window as double-buffered */
448 /* When drawing geometry to vertex attribute buffers, user specifies
449 * the attribute indices for vertices, normals and/or texture coords
450 * to freeglut. Those are stored here
452 GLint attribute_v_coord;
453 GLint attribute_v_normal;
454 GLint attribute_v_texture;
459 * Bitmasks indicating the different kinds of
460 * actions that can be scheduled for a window.
462 #define GLUT_INIT_WORK (1<<0)
463 #define GLUT_VISIBILITY_WORK (1<<1)
464 #define GLUT_POSITION_WORK (1<<2)
465 #define GLUT_SIZE_WORK (1<<3)
466 #define GLUT_ZORDER_WORK (1<<4)
467 #define GLUT_FULL_SCREEN_WORK (1<<5)
468 #define GLUT_DISPLAY_WORK (1<<6)
471 * An enumeration containing the desired mapping state of a window
478 } fgDesiredVisibility ;
481 * There is considerable confusion about the "right thing to
482 * do" concerning window size and position. GLUT itself is
483 * not consistent between Windows and UNIX/X11; since
484 * platform independence is a virtue for "freeglut", we
485 * decided to break with GLUT's behaviour.
487 * Under UNIX/X11, it is apparently not possible to get the
488 * window border sizes in order to subtract them off the
489 * window's initial position until some time after the window
490 * has been created. Therefore we decided on the following
491 * behaviour, both under Windows and under UNIX/X11:
492 * - When you create a window with position (x,y) and size
493 * (w,h), the upper left hand corner of the outside of the
494 * window is at (x,y) and the size of the drawable area is
496 * - When you query the size and position of the window--as
497 * is happening here for Windows--"freeglut" will return
498 * the size of the drawable area--the (w,h) that you
499 * specified when you created the window--and the coordinates
500 * of the upper left hand corner of the drawable area, i.e.
501 * of the client rect--which is NOT the (x,y) you specified.
503 typedef struct tagSFG_WindowState SFG_WindowState;
504 struct tagSFG_WindowState /* as per notes above, sizes always refer to the client area (thus without the window decorations) */
506 /* window state - size, position, look */
507 int Xpos; /* Window's top-left of client area, X-coordinate */
508 int Ypos; /* Window's top-left of client area, Y-coordinate */
509 int Width; /* Window's width in pixels */
510 int Height; /* The same about the height */
511 GLboolean Visible; /* Is the window visible now? Not using fgVisibilityState as we only care if visible or not */
512 int Cursor; /* The currently selected cursor style */
513 GLboolean IsFullscreen; /* is the window fullscreen? */
515 /* FreeGLUT operations are deferred, that is, window moving, resizing,
516 * Z-order changing, making full screen or not do not happen immediately
517 * upon the user's request, but only in the next iteration of the main
518 * loop, before the display callback is called. This allows multiple
519 * reshape, position, etc requests to be combined into one and is
520 * compatible with the way GLUT does things. Callbacks get triggered
521 * based on the feedback/messages/notifications from the window manager.
522 * Below here we define what work should be done, as well as the relevant
523 * parameters for this work.
525 unsigned int WorkMask; /* work (resize, etc) to be done on the window */
526 int DesiredXpos; /* desired X location */
527 int DesiredYpos; /* desired Y location */
528 int DesiredWidth; /* desired window width */
529 int DesiredHeight; /* desired window height */
530 int DesiredZOrder; /* desired window Z Order position */
531 fgDesiredVisibility DesiredVisibility;/* desired visibility (hidden, iconic, shown/normal) */
533 SFG_PlatformWindowState pWState; /* Window width/height (X11) or rectangle/style (Windows) from before a resize, and other stuff only needed on specific platforms */
535 long JoystickPollRate; /* The joystick polling rate */
536 fg_time_t JoystickLastPoll; /* When the last poll happened */
538 int MouseX, MouseY; /* The most recent mouse position */
540 GLboolean IgnoreKeyRepeat; /* Whether to ignore key repeat. */
542 GLboolean VisualizeNormals; /* When drawing objects, draw vectors representing the normals as well? */
547 * A generic function pointer. We should really use the GLUTproc type
548 * defined in freeglut_ext.h, but if we include that header in this file
549 * a bunch of other stuff (font-related) blows up!
551 typedef void (*SFG_Proc)();
555 * SET_WCB() is used as:
557 * SET_WCB( window, cbname, func, udata );
559 * ...where {window} is the freeglut window to set the callback,
560 * {cbname} is the window-specific callback to set,
561 * {func} is a function-pointer,
562 * {udata} is a void* pointer for user data.
564 * Originally, {FETCH_WCB( ... ) = func} was rather sloppily used,
565 * but this can cause warnings because the FETCH_WCB() macro type-
566 * casts its result, and a type-cast value shouldn't be an lvalue.
568 * The {if( FETCH_WCB( ... ) != func )} test is to do type-checking
569 * and for no other reason. Since it's hidden in the macro, the
570 * ugliness is felt to be rather benign.
572 #define SET_WCB(window,cbname,func,udata) \
575 if( FETCH_WCB( window, cbname ) != (SFG_Proc)(func) ) \
577 (((window).CallBacks[WCB_ ## cbname]) = (SFG_Proc)(func)); \
578 (((window).CallbackDatas[WCB_ ## cbname]) = (udata)); \
583 * FETCH_WCB() is used as:
585 * FETCH_WCB( window, cbname );
587 * ...where {window} is the freeglut window to fetch the callback from,
588 * {cbname} is the window-specific callback to fetch.
590 * The result is correctly type-cast to the callback function pointer
593 #define FETCH_WCB(window,cbname) \
594 ((window).CallBacks[WCB_ ## cbname])
597 * FETCH_USER_DATA_WCB() is used as:
599 * FETCH_USER_DATA_WCB( window, cbname );
601 * ...where {window} is the freeglut window,
602 * {cbname} is the window-specific callback to be invoked,
604 * This expects a variable named "window" of type tagSFG_Window to exist.
607 * FETCH_USER_DATA_WCB() is used as:
609 * FETCH_USER_DATA_WCB( window, cbname );
611 * ...where {window} is the freeglut window to fetch the callback data from,
612 * {cbname} is the window-specific callback data to fetch.
614 * The result is the callback data pointer.
616 #define FETCH_USER_DATA_WCB(window,cbname) \
617 ((window).CallbackDatas[WCB_ ## cbname])
620 * EXPAND_WCB() is used as:
622 * EXPAND_WCB arg_list
624 * ... where {(arg_list)} is the parameter list.
626 * This will take the arg_list and extend it by one argument, adding
627 * the argument "userData" to the end of the list.
629 * All additional args are to get around trailing ',', argument counts,
630 * and not needing a GCC extension to make this work.
632 * Minor modification of:
633 * http://stackoverflow.com/questions/5355241/generating-function-declaration-using-a-macro-iteration/5355946#5355946
635 * Supports up to five arguments
637 #if TARGET_HOST_MS_WINDOWS
639 /* FIXME: Does VC6 support variadic macros? I don't think so (variadic macros came with C99. VC6 came out in 1998) */
641 /* FIXME: VC++ has a greedy preprocessor.
642 * The preprocessor resolves the macros on use instead of after on argument completion/token usage.
643 * e.g.: PP_HAS_ARGS_IMPL2(ONE_OR_MORE, ...) -> PP_HAS_ARGS_IMPL2(, ...) -> "Error, not enough tokens for PP_HAS_ARGS_IMPL2"
645 #define EXPAND_WCB(...) (__VA_ARGS__)
647 #else // #if TARGET_HOST_MS_WINDOWS
649 #define PP_HAS_ARGS_IMPL2(_0, _1, _2, _3, _4, _5, N, ...) N
650 #define PP_HAS_ARGS_SOURCE() \
651 ONE_OR_MORE, ONE_OR_MORE, ONE_OR_MORE, ONE_OR_MORE, ONE_OR_MORE, ZERO
653 #define PP_HAS_ARGS_IMPL(...) \
654 PP_HAS_ARGS_IMPL2(__VA_ARGS__)
655 #define PP_HAS_ARGS(...) \
656 PP_HAS_ARGS_IMPL(NOT_EXIST, ##__VA_ARGS__, PP_HAS_ARGS_SOURCE())
658 #define EXPAND_WCB_ZERO(x) \
660 #define EXPAND_WCB_ONE_OR_MORE(...) \
661 (__VA_ARGS__, userData)
663 #define EXPAND_WCB_DISAMBIGUATE2(has_args, ...) \
664 EXPAND_WCB_ ## has_args (__VA_ARGS__)
665 #define EXPAND_WCB_DISAMBIGUATE(has_args, ...) \
666 EXPAND_WCB_DISAMBIGUATE2(has_args, __VA_ARGS__)
667 #define EXPAND_WCB(...) \
668 EXPAND_WCB_DISAMBIGUATE(PP_HAS_ARGS(__VA_ARGS__), __VA_ARGS__)
670 #endif // #if TARGET_HOST_MS_WINDOWS
673 * INVOKE_WCB() is used as:
675 * INVOKE_WCB( window, cbname, ( arg_list ) );
677 * ...where {window} is the freeglut window,
678 * {cbname} is the window-specific callback to be invoked,
679 * {(arg_list)} is the parameter list.
681 * The callback is invoked as:
683 * callback( arg_list );
685 * ...so the parentheses are REQUIRED in the {arg_list}.
687 * NOTE that it does a sanity-check and also sets the
691 #if TARGET_HOST_MS_WINDOWS && !defined(_WIN32_WCE) /* FIXME: also WinCE? */
692 #define INVOKE_WCB(window,cbname,arg_list) \
695 if( FETCH_WCB( window, cbname ) ) \
697 FGCB ## cbname ## UC func = (FGCB ## cbname ## UC)(FETCH_WCB( window, cbname )); \
698 FGCBUserData userData = FETCH_USER_DATA_WCB( window, cbname ); \
699 fgSetWindow( &window ); \
700 func EXPAND_WCB arg_list; \
704 #define INVOKE_WCB(window,cbname,arg_list) \
707 if( FETCH_WCB( window, cbname ) ) \
709 fgSetWindow( &window ); \
710 FGCBUserData userData = FETCH_USER_DATA_WCB( window, cbname ); \
711 ((FGCB ## cbname ## UC)FETCH_WCB( window, cbname )) EXPAND_WCB arg_list; \
717 * The window callbacks the user can supply us with. Should be kept portable.
719 * This enumeration provides the freeglut CallBack numbers.
720 * The symbolic constants are indices into a window's array of
721 * function callbacks. The names are formed by splicing a common
722 * prefix onto the callback's base name. (This was originally
723 * done so that an early stage of development could live side-by-
724 * side with the old callback code. The old callback code used
725 * the bare callback's name as a structure member, so I used a
726 * prefix for the array index name.)
747 /* Multi-Pointer X and touch related */
753 /* Mobile platforms LifeCycle */
757 /* Presently ignored */
760 WCB_SpaceMotion, /* presently implemented only on UNIX/X11 and Windows */
761 WCB_SpaceRotation, /* presently implemented only on UNIX/X11 and Windows */
762 WCB_SpaceButton, /* presently implemented only on UNIX/X11 and Windows */
768 /* Always make this the LAST one */
773 /* This structure holds the OpenGL rendering context for all the menu windows */
774 typedef struct tagSFG_MenuContext SFG_MenuContext;
775 struct tagSFG_MenuContext
777 SFG_WindowContextType MContext; /* The menu window's WGL context */
780 /* This structure describes a menu */
781 typedef struct tagSFG_Window SFG_Window;
782 typedef struct tagSFG_MenuEntry SFG_MenuEntry;
783 typedef struct tagSFG_Menu SFG_Menu;
787 void *UserData; /* User data passed back at callback */
788 int ID; /* The global menu ID */
789 SFG_List Entries; /* The menu entries list */
790 FGCBMenuUC Callback; /* The menu callback */
791 FGCBUserData CallbackData; /* The menu callback user data */
792 FGCBDestroyUC Destroy; /* Destruction callback */
793 FGCBUserData DestroyData; /* Destruction callback user data */
794 GLboolean IsActive; /* Is the menu selected? */
795 void* Font; /* Font to be used for displaying this menu */
796 int Width; /* Menu box width in pixels */
797 int Height; /* Menu box height in pixels */
798 int X, Y; /* Menu box raster position */
800 SFG_MenuEntry *ActiveEntry; /* Currently active entry in the menu */
801 SFG_Window *Window; /* Window for menu */
802 SFG_Window *ParentWindow; /* Window in which the menu is invoked */
805 /* This is a menu entry */
806 struct tagSFG_MenuEntry
809 int ID; /* The menu entry ID (local) */
810 int Ordinal; /* The menu's ordinal number */
811 char* Text; /* The text to be displayed */
812 SFG_Menu* SubMenu; /* Optional sub-menu tree */
813 GLboolean IsActive; /* Is the entry highlighted? */
814 int Width; /* Label's width in pixels */
818 * A window, making part of freeglut windows hierarchy.
819 * Should be kept portable.
821 * NOTE that ActiveMenu is set to menu itself if the window is a menu.
826 int ID; /* Window's ID number */
828 SFG_Context Window; /* Window and OpenGL context */
829 SFG_WindowState State; /* The window state */
830 SFG_Proc CallBacks[ TOTAL_CALLBACKS ]; /* Array of window callbacks */
831 FGCBUserData CallbackDatas[ TOTAL_CALLBACKS ]; /* Array of window callback datas */
832 void *UserData ; /* For use by user */
834 SFG_Menu* Menu[ FREEGLUT_MAX_MENUS ]; /* Menus appended to window */
835 SFG_Menu* ActiveMenu; /* The window's active menu */
837 SFG_Window* Parent; /* The parent to this window */
838 SFG_List Children; /* The subwindows d.l. list */
840 GLboolean IsMenu; /* Set to 1 if we are a menu */
844 /* A linked list structure of windows */
845 typedef struct tagSFG_WindowList SFG_WindowList ;
846 struct tagSFG_WindowList
852 /* This holds information about all the windows, menus etc. */
853 typedef struct tagSFG_Structure SFG_Structure;
854 struct tagSFG_Structure
856 SFG_List Windows; /* The global windows list */
857 SFG_List Menus; /* The global menus list */
858 SFG_List WindowsToDestroy;
860 SFG_Window* CurrentWindow; /* The currently set window */
861 SFG_Menu* CurrentMenu; /* Same, but menu... */
863 SFG_MenuContext* MenuContext; /* OpenGL rendering context for menus */
865 SFG_Window* GameModeWindow; /* The game mode window */
867 int WindowID; /* The window ID for the next window to be created */
868 int MenuID; /* The menu ID for the next menu to be created */
872 * This structure is used for the enumeration purposes.
873 * You can easily extend its functionalities by declaring
874 * a structure containing enumerator's contents and custom
875 * data, then casting its pointer to (SFG_Enumerator *).
877 typedef struct tagSFG_Enumerator SFG_Enumerator;
878 struct tagSFG_Enumerator
880 GLboolean found; /* Used to terminate search */
881 void* data; /* Custom data pointer */
883 typedef void (* FGCBWindowEnumerator )( SFG_Window *, SFG_Enumerator * );
884 typedef void (* FGCBMenuEnumerator )( SFG_Menu *, SFG_Enumerator * );
886 /* The bitmap font structure */
887 typedef struct tagSFG_Font SFG_Font;
890 char* Name; /* The source font name */
891 int Quantity; /* Number of chars in font */
892 int Height; /* Height of the characters */
893 const GLubyte** Characters; /* The characters mapping */
895 float xorig, yorig; /* Relative origin of the character */
898 /* The stroke font structures */
900 typedef struct tagSFG_StrokeVertex SFG_StrokeVertex;
901 struct tagSFG_StrokeVertex
906 typedef struct tagSFG_StrokeStrip SFG_StrokeStrip;
907 struct tagSFG_StrokeStrip
910 const SFG_StrokeVertex* Vertices;
913 typedef struct tagSFG_StrokeChar SFG_StrokeChar;
914 struct tagSFG_StrokeChar
918 const SFG_StrokeStrip* Strips;
921 typedef struct tagSFG_StrokeFont SFG_StrokeFont;
922 struct tagSFG_StrokeFont
924 char* Name; /* The source font name */
925 int Quantity; /* Number of chars in font */
926 GLfloat Height; /* Height of the characters */
927 const SFG_StrokeChar** Characters; /* The characters mapping */
931 /* -- JOYSTICK-SPECIFIC STRUCTURES AND TYPES ------------------------------- */
933 * Initial defines from "js.h" starting around line 33 with the existing "fg_joystick.c"
937 #if TARGET_HOST_MACINTOSH
938 # include <InputSprocket.h>
941 #if TARGET_HOST_MAC_OSX
942 # include <mach/mach.h>
943 # include <IOKit/IOkitLib.h>
944 # include <IOKit/hid/IOHIDLib.h>
947 /* XXX It might be better to poll the operating system for the numbers of buttons and
948 * XXX axes and then dynamically allocate the arrays.
950 #define _JS_MAX_BUTTONS 32
952 #if TARGET_HOST_MACINTOSH
953 # define _JS_MAX_AXES 9
954 typedef struct tagSFG_PlatformJoystick SFG_PlatformJoystick;
955 struct tagSFG_PlatformJoystick
957 #define ISP_NUM_AXIS 9
958 #define ISP_NUM_NEEDS 41
959 ISpElementReference isp_elem [ ISP_NUM_NEEDS ];
960 ISpNeed isp_needs [ ISP_NUM_NEEDS ];
964 #if TARGET_HOST_MAC_OSX
965 # define _JS_MAX_AXES 16
966 typedef struct tagSFG_PlatformJoystick SFG_PlatformJoystick;
967 struct tagSFG_PlatformJoystick
969 IOHIDDeviceInterface ** hidDev;
970 IOHIDElementCookie buttonCookies[41];
971 IOHIDElementCookie axisCookies[_JS_MAX_AXES];
972 /* The next two variables are not used anywhere */
973 /* long minReport[_JS_MAX_AXES],
974 * maxReport[_JS_MAX_AXES];
981 * Definition of "SFG_Joystick" structure -- based on JS's "jsJoystick" object class.
982 * See "js.h" lines 80-178.
984 typedef struct tagSFG_Joystick SFG_Joystick;
985 struct tagSFG_Joystick
987 SFG_PlatformJoystick pJoystick;
995 float dead_band[ _JS_MAX_AXES ];
996 float saturate [ _JS_MAX_AXES ];
997 float center [ _JS_MAX_AXES ];
998 float max [ _JS_MAX_AXES ];
999 float min [ _JS_MAX_AXES ];
1004 /* -- GLOBAL VARIABLES EXPORTS --------------------------------------------- */
1006 /* Freeglut display related stuff (initialized once per session) */
1007 extern SFG_Display fgDisplay;
1009 /* Freeglut internal structure */
1010 extern SFG_Structure fgStructure;
1012 /* The current freeglut settings */
1013 extern SFG_State fgState;
1016 /* -- PRIVATE FUNCTION DECLARATIONS ---------------------------------------- */
1019 * A call to this function makes us sure that the Display and Structure
1020 * subsystems have been properly initialized and are ready to be used
1022 #define FREEGLUT_EXIT_IF_NOT_INITIALISED( string ) \
1023 if ( ! fgState.Initialised ) \
1025 fgError ( " ERROR: Function <%s> called" \
1026 " without first calling 'glutInit'.", (string) ) ; \
1029 #define FREEGLUT_INTERNAL_ERROR_EXIT_IF_NOT_INITIALISED( string ) \
1030 if ( ! fgState.Initialised ) \
1032 fgError ( " ERROR: Internal <%s> function called" \
1033 " without first calling 'glutInit'.", (string) ) ; \
1036 #define FREEGLUT_INTERNAL_ERROR_EXIT( cond, string, function ) \
1039 fgError ( " ERROR: Internal error <%s> in function %s", \
1040 (string), (function) ) ; \
1044 * Following definitions are somewhat similar to GLib's,
1045 * but do not generate any log messages:
1047 #define freeglut_return_if_fail( expr ) \
1050 #define freeglut_return_val_if_fail( expr, val ) \
1055 * A call to those macros assures us that there is a current
1056 * window set, respectively:
1058 #define FREEGLUT_EXIT_IF_NO_WINDOW( string ) \
1059 if ( ! fgStructure.CurrentWindow && \
1060 ( fgState.ActionOnWindowClose != GLUT_ACTION_CONTINUE_EXECUTION ) ) \
1062 fgError ( " ERROR: Function <%s> called" \
1063 " with no current window defined.", (string) ) ; \
1067 * The deinitialize function gets called on glutMainLoop() end. It should clean up
1068 * everything inside of the freeglut
1070 void fgDeinitialize( void );
1073 * Those two functions are used to create/destroy the freeglut internal
1074 * structures. This actually happens when calling glutInit() and when
1075 * quitting the glutMainLoop() (which actually happens, when all windows
1076 * have been closed).
1078 void fgCreateStructure( void );
1079 void fgDestroyStructure( void );
1082 * Window creation, opening, closing and destruction.
1083 * Also CallBack clearing/initialization.
1084 * Defined in fg_structure.c, fg_window.c.
1086 SFG_Window* fgCreateWindow( SFG_Window* parent, const char* title,
1087 GLboolean positionUse, int x, int y,
1088 GLboolean sizeUse, int w, int h,
1089 GLboolean gameMode, GLboolean isMenu );
1090 void fgSetWindow ( SFG_Window *window );
1091 void fgOpenWindow( SFG_Window* window, const char* title,
1092 GLboolean positionUse, int x, int y,
1093 GLboolean sizeUse, int w, int h,
1094 GLboolean gameMode, GLboolean isSubWindow );
1095 void fgCloseWindow( SFG_Window* window );
1096 void fgAddToWindowDestroyList ( SFG_Window* window );
1097 void fgCloseWindows ();
1098 void fgDestroyWindow( SFG_Window* window );
1100 /* Menu creation and destruction. Defined in fg_structure.c */
1101 SFG_Menu* fgCreateMenu( FGCBMenuUC menuCallback, FGCBUserData userData );
1102 void fgDestroyMenu( SFG_Menu* menu );
1104 /* Joystick device management functions, defined in fg_joystick.c */
1105 int fgJoystickDetect( void );
1106 void fgInitialiseJoysticks( void );
1107 void fgJoystickClose( void );
1108 void fgJoystickPollWindow( SFG_Window* window );
1110 /* InputDevice Initialisation and Closure */
1111 int fgInputDeviceDetect( void );
1112 void fgInitialiseInputDevices( void );
1113 void fgInputDeviceClose( void );
1115 /* spaceball device functions, defined in fg_spaceball.c */
1116 void fgInitialiseSpaceball( void );
1117 void fgSpaceballClose( void );
1118 void fgSpaceballSetWindow( SFG_Window *window );
1120 int fgHasSpaceball( void );
1121 int fgSpaceballNumButtons( void );
1123 /* Setting the cursor for a given window */
1124 void fgSetCursor ( SFG_Window *window, int cursorID );
1127 * Helper function to enumerate through all registered windows
1128 * and one to enumerate all of a window's subwindows...
1130 * The GFunc callback for those functions will be defined as:
1132 * void enumCallback( gpointer window, gpointer enumerator );
1134 * where window is the enumerated (sub)window pointer (SFG_Window *),
1135 * and userData is the a custom user-supplied pointer. Functions
1136 * are defined and exported from fg_structure.c file.
1138 void fgEnumWindows( FGCBWindowEnumerator enumCallback, SFG_Enumerator* enumerator );
1139 void fgEnumSubWindows( SFG_Window* window, FGCBWindowEnumerator enumCallback,
1140 SFG_Enumerator* enumerator );
1143 * fgWindowByHandle returns a (SFG_Window *) value pointing to the
1144 * first window in the queue matching the specified window handle.
1145 * The function is defined in fg_structure.c file.
1147 SFG_Window* fgWindowByHandle( SFG_WindowHandleType hWindow );
1150 * This function is similar to the previous one, except it is
1151 * looking for a specified (sub)window identifier. The function
1152 * is defined in fg_structure.c file.
1154 SFG_Window* fgWindowByID( int windowID );
1157 * Looks up a menu given its ID. This is easier than fgWindowByXXX
1158 * as all menus are placed in a single doubly linked list...
1160 SFG_Menu* fgMenuByID( int menuID );
1163 * Returns active menu, if any. Assumption: only one menu active throughout application at any one time.
1164 * This is easier than fgWindowByXXX as all menus are placed in one doubly linked list...
1166 SFG_Menu* fgGetActiveMenu( );
1169 * The menu activation and deactivation the code. This is the meat
1170 * of the menu user interface handling code...
1172 void fgUpdateMenuHighlight ( SFG_Menu *menu );
1173 GLboolean fgCheckActiveMenu ( SFG_Window *window, int button, GLboolean pressed,
1174 int mouse_x, int mouse_y );
1175 void fgDeactivateMenu( SFG_Window *window );
1178 * This function gets called just before the buffers swap, so that
1179 * freeglut can display the pull-down menus via OpenGL. The function
1180 * is defined in fg_menu.c file.
1182 void fgDisplayMenu( void );
1184 /* Elapsed time as per glutGet(GLUT_ELAPSED_TIME). */
1185 fg_time_t fgElapsedTime( void );
1187 /* System time in milliseconds */
1188 fg_time_t fgSystemTime(void);
1190 /* List functions */
1191 void fgListInit(SFG_List *list);
1192 void fgListAppend(SFG_List *list, SFG_Node *node);
1193 void fgListRemove(SFG_List *list, SFG_Node *node);
1194 int fgListLength(SFG_List *list);
1195 void fgListInsert(SFG_List *list, SFG_Node *next, SFG_Node *node);
1197 /* Error Message functions */
1198 void fgError( const char *fmt, ... );
1199 void fgWarning( const char *fmt, ... );
1201 SFG_Proc fgPlatformGetProcAddress( const char *procName );
1203 /* pushing attribute/value pairs into an array */
1204 #define ATTRIB(a) attributes[where++]=(a)
1205 #define ATTRIB_VAL(a,v) {ATTRIB(a); ATTRIB(v);}
1207 int fghMapBit( int mask, int from, int to );
1208 int fghIsLegacyContextRequested( void );
1209 void fghContextCreationError( void );
1210 int fghNumberOfAuxBuffersRequested( void );
1212 #endif /* FREEGLUT_INTERNAL_H */
1214 /*** END OF FILE ***/