src/events/SDL_keyboard.c
author Sam Lantinga <slouken@libsdl.org>
Mon, 21 Sep 2009 08:58:51 +0000
branchSDL-1.2
changeset 4214 4250beeb5ad1
parent 4162 3b7fc3416601
child 4299 0ca47eaff9c9
permissions -rw-r--r--
Oh yeah, we have GLX support too.
     1 /*
     2     SDL - Simple DirectMedia Layer
     3     Copyright (C) 1997-2009 Sam Lantinga
     4 
     5     This library is free software; you can redistribute it and/or
     6     modify it under the terms of the GNU Lesser General Public
     7     License as published by the Free Software Foundation; either
     8     version 2.1 of the License, or (at your option) any later version.
     9 
    10     This library is distributed in the hope that it will be useful,
    11     but WITHOUT ANY WARRANTY; without even the implied warranty of
    12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    13     Lesser General Public License for more details.
    14 
    15     You should have received a copy of the GNU Lesser General Public
    16     License along with this library; if not, write to the Free Software
    17     Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
    18 
    19     Sam Lantinga
    20     slouken@libsdl.org
    21 */
    22 #include "SDL_config.h"
    23 
    24 /* General keyboard handling code for SDL */
    25 
    26 #include "SDL_timer.h"
    27 #include "SDL_events.h"
    28 #include "SDL_events_c.h"
    29 #include "SDL_sysevents.h"
    30 
    31 
    32 /* Global keystate information */
    33 static Uint8  SDL_KeyState[SDLK_LAST];
    34 static SDLMod SDL_ModState;
    35 int SDL_TranslateUNICODE = 0;
    36 
    37 static const char *keynames[SDLK_LAST];	/* Array of keycode names */
    38 
    39 /*
    40  * jk 991215 - added
    41  */
    42 struct {
    43 	int firsttime;    /* if we check against the delay or repeat value */
    44 	int delay;        /* the delay before we start repeating */
    45 	int interval;     /* the delay between key repeat events */
    46 	Uint32 timestamp; /* the time the first keydown event occurred */
    47 
    48 	SDL_Event evt;    /* the event we are supposed to repeat */
    49 } SDL_KeyRepeat;
    50 
    51 /* Global no-lock-keys support */
    52 static Uint8 SDL_NoLockKeys;
    53 
    54 #define SDL_NLK_CAPS 0x01
    55 #define SDL_NLK_NUM  0x02
    56 
    57 /* Public functions */
    58 int SDL_KeyboardInit(void)
    59 {
    60 	const char* env;
    61 	SDL_VideoDevice *video = current_video;
    62 	SDL_VideoDevice *this  = current_video;
    63 
    64 	/* Set default mode of UNICODE translation */
    65 	SDL_EnableUNICODE(DEFAULT_UNICODE_TRANSLATION);
    66 
    67 	/* Initialize the tables */
    68 	SDL_ModState = KMOD_NONE;
    69 	SDL_memset((void*)keynames, 0, sizeof(keynames));
    70 	SDL_memset(SDL_KeyState, 0, sizeof(SDL_KeyState));
    71 	video->InitOSKeymap(this);
    72 
    73 	SDL_EnableKeyRepeat(0, 0);
    74 
    75 	/* Allow environment override to disable special lock-key behavior */
    76 	env = SDL_getenv("SDL_NO_LOCK_KEYS");
    77 	SDL_NoLockKeys = 0;
    78 	if (env) {
    79 		switch (SDL_atoi(env)) {
    80 			case 1:
    81 				SDL_NoLockKeys = SDL_NLK_CAPS | SDL_NLK_NUM;
    82 				break;
    83 			case 2:
    84 				SDL_NoLockKeys = SDL_NLK_CAPS;
    85 				break;
    86 			case 3:
    87 				SDL_NoLockKeys = SDL_NLK_NUM;
    88 				break;
    89 			default:
    90 				break;
    91 		}
    92 	}
    93 
    94 	/* Fill in the blanks in keynames */
    95 	keynames[SDLK_BACKSPACE] = "backspace";
    96 	keynames[SDLK_TAB] = "tab";
    97 	keynames[SDLK_CLEAR] = "clear";
    98 	keynames[SDLK_RETURN] = "return";
    99 	keynames[SDLK_PAUSE] = "pause";
   100 	keynames[SDLK_ESCAPE] = "escape";
   101 	keynames[SDLK_SPACE] = "space";
   102 	keynames[SDLK_EXCLAIM]  = "!";
   103 	keynames[SDLK_QUOTEDBL]  = "\"";
   104 	keynames[SDLK_HASH]  = "#";
   105 	keynames[SDLK_DOLLAR]  = "$";
   106 	keynames[SDLK_AMPERSAND]  = "&";
   107 	keynames[SDLK_QUOTE] = "'";
   108 	keynames[SDLK_LEFTPAREN] = "(";
   109 	keynames[SDLK_RIGHTPAREN] = ")";
   110 	keynames[SDLK_ASTERISK] = "*";
   111 	keynames[SDLK_PLUS] = "+";
   112 	keynames[SDLK_COMMA] = ",";
   113 	keynames[SDLK_MINUS] = "-";
   114 	keynames[SDLK_PERIOD] = ".";
   115 	keynames[SDLK_SLASH] = "/";
   116 	keynames[SDLK_0] = "0";
   117 	keynames[SDLK_1] = "1";
   118 	keynames[SDLK_2] = "2";
   119 	keynames[SDLK_3] = "3";
   120 	keynames[SDLK_4] = "4";
   121 	keynames[SDLK_5] = "5";
   122 	keynames[SDLK_6] = "6";
   123 	keynames[SDLK_7] = "7";
   124 	keynames[SDLK_8] = "8";
   125 	keynames[SDLK_9] = "9";
   126 	keynames[SDLK_COLON] = ":";
   127 	keynames[SDLK_SEMICOLON] = ";";
   128 	keynames[SDLK_LESS] = "<";
   129 	keynames[SDLK_EQUALS] = "=";
   130 	keynames[SDLK_GREATER] = ">";
   131 	keynames[SDLK_QUESTION] = "?";
   132 	keynames[SDLK_AT] = "@";
   133 	keynames[SDLK_LEFTBRACKET] = "[";
   134 	keynames[SDLK_BACKSLASH] = "\\";
   135 	keynames[SDLK_RIGHTBRACKET] = "]";
   136 	keynames[SDLK_CARET] = "^";
   137 	keynames[SDLK_UNDERSCORE] = "_";
   138 	keynames[SDLK_BACKQUOTE] = "`";
   139 	keynames[SDLK_a] = "a";
   140 	keynames[SDLK_b] = "b";
   141 	keynames[SDLK_c] = "c";
   142 	keynames[SDLK_d] = "d";
   143 	keynames[SDLK_e] = "e";
   144 	keynames[SDLK_f] = "f";
   145 	keynames[SDLK_g] = "g";
   146 	keynames[SDLK_h] = "h";
   147 	keynames[SDLK_i] = "i";
   148 	keynames[SDLK_j] = "j";
   149 	keynames[SDLK_k] = "k";
   150 	keynames[SDLK_l] = "l";
   151 	keynames[SDLK_m] = "m";
   152 	keynames[SDLK_n] = "n";
   153 	keynames[SDLK_o] = "o";
   154 	keynames[SDLK_p] = "p";
   155 	keynames[SDLK_q] = "q";
   156 	keynames[SDLK_r] = "r";
   157 	keynames[SDLK_s] = "s";
   158 	keynames[SDLK_t] = "t";
   159 	keynames[SDLK_u] = "u";
   160 	keynames[SDLK_v] = "v";
   161 	keynames[SDLK_w] = "w";
   162 	keynames[SDLK_x] = "x";
   163 	keynames[SDLK_y] = "y";
   164 	keynames[SDLK_z] = "z";
   165 	keynames[SDLK_DELETE] = "delete";
   166 
   167 	keynames[SDLK_WORLD_0] = "world 0";
   168 	keynames[SDLK_WORLD_1] = "world 1";
   169 	keynames[SDLK_WORLD_2] = "world 2";
   170 	keynames[SDLK_WORLD_3] = "world 3";
   171 	keynames[SDLK_WORLD_4] = "world 4";
   172 	keynames[SDLK_WORLD_5] = "world 5";
   173 	keynames[SDLK_WORLD_6] = "world 6";
   174 	keynames[SDLK_WORLD_7] = "world 7";
   175 	keynames[SDLK_WORLD_8] = "world 8";
   176 	keynames[SDLK_WORLD_9] = "world 9";
   177 	keynames[SDLK_WORLD_10] = "world 10";
   178 	keynames[SDLK_WORLD_11] = "world 11";
   179 	keynames[SDLK_WORLD_12] = "world 12";
   180 	keynames[SDLK_WORLD_13] = "world 13";
   181 	keynames[SDLK_WORLD_14] = "world 14";
   182 	keynames[SDLK_WORLD_15] = "world 15";
   183 	keynames[SDLK_WORLD_16] = "world 16";
   184 	keynames[SDLK_WORLD_17] = "world 17";
   185 	keynames[SDLK_WORLD_18] = "world 18";
   186 	keynames[SDLK_WORLD_19] = "world 19";
   187 	keynames[SDLK_WORLD_20] = "world 20";
   188 	keynames[SDLK_WORLD_21] = "world 21";
   189 	keynames[SDLK_WORLD_22] = "world 22";
   190 	keynames[SDLK_WORLD_23] = "world 23";
   191 	keynames[SDLK_WORLD_24] = "world 24";
   192 	keynames[SDLK_WORLD_25] = "world 25";
   193 	keynames[SDLK_WORLD_26] = "world 26";
   194 	keynames[SDLK_WORLD_27] = "world 27";
   195 	keynames[SDLK_WORLD_28] = "world 28";
   196 	keynames[SDLK_WORLD_29] = "world 29";
   197 	keynames[SDLK_WORLD_30] = "world 30";
   198 	keynames[SDLK_WORLD_31] = "world 31";
   199 	keynames[SDLK_WORLD_32] = "world 32";
   200 	keynames[SDLK_WORLD_33] = "world 33";
   201 	keynames[SDLK_WORLD_34] = "world 34";
   202 	keynames[SDLK_WORLD_35] = "world 35";
   203 	keynames[SDLK_WORLD_36] = "world 36";
   204 	keynames[SDLK_WORLD_37] = "world 37";
   205 	keynames[SDLK_WORLD_38] = "world 38";
   206 	keynames[SDLK_WORLD_39] = "world 39";
   207 	keynames[SDLK_WORLD_40] = "world 40";
   208 	keynames[SDLK_WORLD_41] = "world 41";
   209 	keynames[SDLK_WORLD_42] = "world 42";
   210 	keynames[SDLK_WORLD_43] = "world 43";
   211 	keynames[SDLK_WORLD_44] = "world 44";
   212 	keynames[SDLK_WORLD_45] = "world 45";
   213 	keynames[SDLK_WORLD_46] = "world 46";
   214 	keynames[SDLK_WORLD_47] = "world 47";
   215 	keynames[SDLK_WORLD_48] = "world 48";
   216 	keynames[SDLK_WORLD_49] = "world 49";
   217 	keynames[SDLK_WORLD_50] = "world 50";
   218 	keynames[SDLK_WORLD_51] = "world 51";
   219 	keynames[SDLK_WORLD_52] = "world 52";
   220 	keynames[SDLK_WORLD_53] = "world 53";
   221 	keynames[SDLK_WORLD_54] = "world 54";
   222 	keynames[SDLK_WORLD_55] = "world 55";
   223 	keynames[SDLK_WORLD_56] = "world 56";
   224 	keynames[SDLK_WORLD_57] = "world 57";
   225 	keynames[SDLK_WORLD_58] = "world 58";
   226 	keynames[SDLK_WORLD_59] = "world 59";
   227 	keynames[SDLK_WORLD_60] = "world 60";
   228 	keynames[SDLK_WORLD_61] = "world 61";
   229 	keynames[SDLK_WORLD_62] = "world 62";
   230 	keynames[SDLK_WORLD_63] = "world 63";
   231 	keynames[SDLK_WORLD_64] = "world 64";
   232 	keynames[SDLK_WORLD_65] = "world 65";
   233 	keynames[SDLK_WORLD_66] = "world 66";
   234 	keynames[SDLK_WORLD_67] = "world 67";
   235 	keynames[SDLK_WORLD_68] = "world 68";
   236 	keynames[SDLK_WORLD_69] = "world 69";
   237 	keynames[SDLK_WORLD_70] = "world 70";
   238 	keynames[SDLK_WORLD_71] = "world 71";
   239 	keynames[SDLK_WORLD_72] = "world 72";
   240 	keynames[SDLK_WORLD_73] = "world 73";
   241 	keynames[SDLK_WORLD_74] = "world 74";
   242 	keynames[SDLK_WORLD_75] = "world 75";
   243 	keynames[SDLK_WORLD_76] = "world 76";
   244 	keynames[SDLK_WORLD_77] = "world 77";
   245 	keynames[SDLK_WORLD_78] = "world 78";
   246 	keynames[SDLK_WORLD_79] = "world 79";
   247 	keynames[SDLK_WORLD_80] = "world 80";
   248 	keynames[SDLK_WORLD_81] = "world 81";
   249 	keynames[SDLK_WORLD_82] = "world 82";
   250 	keynames[SDLK_WORLD_83] = "world 83";
   251 	keynames[SDLK_WORLD_84] = "world 84";
   252 	keynames[SDLK_WORLD_85] = "world 85";
   253 	keynames[SDLK_WORLD_86] = "world 86";
   254 	keynames[SDLK_WORLD_87] = "world 87";
   255 	keynames[SDLK_WORLD_88] = "world 88";
   256 	keynames[SDLK_WORLD_89] = "world 89";
   257 	keynames[SDLK_WORLD_90] = "world 90";
   258 	keynames[SDLK_WORLD_91] = "world 91";
   259 	keynames[SDLK_WORLD_92] = "world 92";
   260 	keynames[SDLK_WORLD_93] = "world 93";
   261 	keynames[SDLK_WORLD_94] = "world 94";
   262 	keynames[SDLK_WORLD_95] = "world 95";
   263 
   264 	keynames[SDLK_KP0] = "[0]";
   265 	keynames[SDLK_KP1] = "[1]";
   266 	keynames[SDLK_KP2] = "[2]";
   267 	keynames[SDLK_KP3] = "[3]";
   268 	keynames[SDLK_KP4] = "[4]";
   269 	keynames[SDLK_KP5] = "[5]";
   270 	keynames[SDLK_KP6] = "[6]";
   271 	keynames[SDLK_KP7] = "[7]";
   272 	keynames[SDLK_KP8] = "[8]";
   273 	keynames[SDLK_KP9] = "[9]";
   274 	keynames[SDLK_KP_PERIOD] = "[.]";
   275 	keynames[SDLK_KP_DIVIDE] = "[/]";
   276 	keynames[SDLK_KP_MULTIPLY] = "[*]";
   277 	keynames[SDLK_KP_MINUS] = "[-]";
   278 	keynames[SDLK_KP_PLUS] = "[+]";
   279 	keynames[SDLK_KP_ENTER] = "enter";
   280 	keynames[SDLK_KP_EQUALS] = "equals";
   281 
   282 	keynames[SDLK_UP] = "up";
   283 	keynames[SDLK_DOWN] = "down";
   284 	keynames[SDLK_RIGHT] = "right";
   285 	keynames[SDLK_LEFT] = "left";
   286 	keynames[SDLK_DOWN] = "down";
   287 	keynames[SDLK_INSERT] = "insert";
   288 	keynames[SDLK_HOME] = "home";
   289 	keynames[SDLK_END] = "end";
   290 	keynames[SDLK_PAGEUP] = "page up";
   291 	keynames[SDLK_PAGEDOWN] = "page down";
   292 
   293 	keynames[SDLK_F1] = "f1";
   294 	keynames[SDLK_F2] = "f2";
   295 	keynames[SDLK_F3] = "f3";
   296 	keynames[SDLK_F4] = "f4";
   297 	keynames[SDLK_F5] = "f5";
   298 	keynames[SDLK_F6] = "f6";
   299 	keynames[SDLK_F7] = "f7";
   300 	keynames[SDLK_F8] = "f8";
   301 	keynames[SDLK_F9] = "f9";
   302 	keynames[SDLK_F10] = "f10";
   303 	keynames[SDLK_F11] = "f11";
   304 	keynames[SDLK_F12] = "f12";
   305 	keynames[SDLK_F13] = "f13";
   306 	keynames[SDLK_F14] = "f14";
   307 	keynames[SDLK_F15] = "f15";
   308 
   309 	keynames[SDLK_NUMLOCK] = "numlock";
   310 	keynames[SDLK_CAPSLOCK] = "caps lock";
   311 	keynames[SDLK_SCROLLOCK] = "scroll lock";
   312 	keynames[SDLK_RSHIFT] = "right shift";
   313 	keynames[SDLK_LSHIFT] = "left shift";
   314 	keynames[SDLK_RCTRL] = "right ctrl";
   315 	keynames[SDLK_LCTRL] = "left ctrl";
   316 	keynames[SDLK_RALT] = "right alt";
   317 	keynames[SDLK_LALT] = "left alt";
   318 	keynames[SDLK_RMETA] = "right meta";
   319 	keynames[SDLK_LMETA] = "left meta";
   320 	keynames[SDLK_LSUPER] = "left super";	/* "Windows" keys */
   321 	keynames[SDLK_RSUPER] = "right super";	
   322 	keynames[SDLK_MODE] = "alt gr";
   323 	keynames[SDLK_COMPOSE] = "compose";
   324 
   325 	keynames[SDLK_HELP] = "help";
   326 	keynames[SDLK_PRINT] = "print screen";
   327 	keynames[SDLK_SYSREQ] = "sys req";
   328 	keynames[SDLK_BREAK] = "break";
   329 	keynames[SDLK_MENU] = "menu";
   330 	keynames[SDLK_POWER] = "power";
   331 	keynames[SDLK_EURO] = "euro";
   332 	keynames[SDLK_UNDO] = "undo";
   333 
   334 	/* Done.  Whew. */
   335 	return(0);
   336 }
   337 void SDL_KeyboardQuit(void)
   338 {
   339 }
   340 
   341 /* We lost the keyboard, so post key up messages for all pressed keys */
   342 void SDL_ResetKeyboard(void)
   343 {
   344 	SDL_keysym keysym;
   345 	SDLKey key;
   346 
   347 	SDL_memset(&keysym, 0, (sizeof keysym));
   348 	for ( key=SDLK_FIRST; key<SDLK_LAST; ++key ) {
   349 		if ( SDL_KeyState[key] == SDL_PRESSED ) {
   350 			keysym.sym = key;
   351 			SDL_PrivateKeyboard(SDL_RELEASED, &keysym);
   352 		}
   353 	}
   354 	SDL_KeyRepeat.timestamp = 0;
   355 }
   356 
   357 int SDL_EnableUNICODE(int enable)
   358 {
   359 	int old_mode;
   360 
   361 	old_mode = SDL_TranslateUNICODE;
   362 	if ( enable >= 0 ) {
   363 		SDL_TranslateUNICODE = enable;
   364 	}
   365 	return(old_mode);
   366 }
   367 
   368 Uint8 * SDL_GetKeyState (int *numkeys)
   369 {
   370 	if ( numkeys != (int *)0 )
   371 		*numkeys = SDLK_LAST;
   372 	return(SDL_KeyState);
   373 }
   374 SDLMod SDL_GetModState (void)
   375 {
   376 	return(SDL_ModState);
   377 }
   378 void SDL_SetModState (SDLMod modstate)
   379 {
   380 	SDL_ModState = modstate;
   381 }
   382 
   383 char *SDL_GetKeyName(SDLKey key)
   384 {
   385 	const char *keyname;
   386 
   387 	keyname = NULL;
   388 	if ( key < SDLK_LAST ) {
   389 		keyname = keynames[key];
   390 	}
   391 	if ( keyname == NULL ) {
   392 		keyname = "unknown key";
   393 	}
   394 	/* FIXME: make this function const in 1.3 */
   395 	return (char *)(keyname);
   396 }
   397 
   398 /* These are global for SDL_eventloop.c */
   399 int SDL_PrivateKeyboard(Uint8 state, SDL_keysym *keysym)
   400 {
   401 	SDL_Event event;
   402 	int posted, repeatable;
   403 	Uint16 modstate;
   404 
   405 	SDL_memset(&event, 0, sizeof(event));
   406 
   407 #if 0
   408 printf("The '%s' key has been %s\n", SDL_GetKeyName(keysym->sym), 
   409 				state == SDL_PRESSED ? "pressed" : "released");
   410 #endif
   411 	/* Set up the keysym */
   412 	modstate = (Uint16)SDL_ModState;
   413 
   414 	repeatable = 0;
   415 
   416 	if ( state == SDL_PRESSED ) {
   417 		keysym->mod = (SDLMod)modstate;
   418 		switch (keysym->sym) {
   419 			case SDLK_UNKNOWN:
   420 				break;
   421 			case SDLK_NUMLOCK:
   422 				modstate ^= KMOD_NUM;
   423 				if ( SDL_NoLockKeys & SDL_NLK_NUM )
   424 					break;
   425 				if ( ! (modstate&KMOD_NUM) )
   426 					state = SDL_RELEASED;
   427 				keysym->mod = (SDLMod)modstate;
   428 				break;
   429 			case SDLK_CAPSLOCK:
   430 				modstate ^= KMOD_CAPS;
   431 				if ( SDL_NoLockKeys & SDL_NLK_CAPS )
   432 					break;
   433 				if ( ! (modstate&KMOD_CAPS) )
   434 					state = SDL_RELEASED;
   435 				keysym->mod = (SDLMod)modstate;
   436 				break;
   437 			case SDLK_LCTRL:
   438 				modstate |= KMOD_LCTRL;
   439 				break;
   440 			case SDLK_RCTRL:
   441 				modstate |= KMOD_RCTRL;
   442 				break;
   443 			case SDLK_LSHIFT:
   444 				modstate |= KMOD_LSHIFT;
   445 				break;
   446 			case SDLK_RSHIFT:
   447 				modstate |= KMOD_RSHIFT;
   448 				break;
   449 			case SDLK_LALT:
   450 				modstate |= KMOD_LALT;
   451 				break;
   452 			case SDLK_RALT:
   453 				modstate |= KMOD_RALT;
   454 				break;
   455 			case SDLK_LMETA:
   456 				modstate |= KMOD_LMETA;
   457 				break;
   458 			case SDLK_RMETA:
   459 				modstate |= KMOD_RMETA;
   460 				break;
   461 			case SDLK_MODE:
   462 				modstate |= KMOD_MODE;
   463 				break;
   464 			default:
   465 				repeatable = 1;
   466 				break;
   467 		}
   468 	} else {
   469 		switch (keysym->sym) {
   470 			case SDLK_UNKNOWN:
   471 				break;
   472 			case SDLK_NUMLOCK:
   473 				if ( SDL_NoLockKeys & SDL_NLK_NUM )
   474 					break;
   475 				/* Only send keydown events */
   476 				return(0);
   477 			case SDLK_CAPSLOCK:
   478 				if ( SDL_NoLockKeys & SDL_NLK_CAPS )
   479 					break;
   480 				/* Only send keydown events */
   481 				return(0);
   482 			case SDLK_LCTRL:
   483 				modstate &= ~KMOD_LCTRL;
   484 				break;
   485 			case SDLK_RCTRL:
   486 				modstate &= ~KMOD_RCTRL;
   487 				break;
   488 			case SDLK_LSHIFT:
   489 				modstate &= ~KMOD_LSHIFT;
   490 				break;
   491 			case SDLK_RSHIFT:
   492 				modstate &= ~KMOD_RSHIFT;
   493 				break;
   494 			case SDLK_LALT:
   495 				modstate &= ~KMOD_LALT;
   496 				break;
   497 			case SDLK_RALT:
   498 				modstate &= ~KMOD_RALT;
   499 				break;
   500 			case SDLK_LMETA:
   501 				modstate &= ~KMOD_LMETA;
   502 				break;
   503 			case SDLK_RMETA:
   504 				modstate &= ~KMOD_RMETA;
   505 				break;
   506 			case SDLK_MODE:
   507 				modstate &= ~KMOD_MODE;
   508 				break;
   509 			default:
   510 				break;
   511 		}
   512 		keysym->mod = (SDLMod)modstate;
   513 	}
   514 
   515 	/* Figure out what type of event this is */
   516 	switch (state) {
   517 		case SDL_PRESSED:
   518 			event.type = SDL_KEYDOWN;
   519 			break;
   520 		case SDL_RELEASED:
   521 			event.type = SDL_KEYUP;
   522 			/*
   523 			 * jk 991215 - Added
   524 			 */
   525 			if ( SDL_KeyRepeat.timestamp &&
   526 			     SDL_KeyRepeat.evt.key.keysym.sym == keysym->sym ) {
   527 				SDL_KeyRepeat.timestamp = 0;
   528 			}
   529 			break;
   530 		default:
   531 			/* Invalid state -- bail */
   532 			return(0);
   533 	}
   534 
   535 	if ( keysym->sym != SDLK_UNKNOWN ) {
   536 		/* Drop events that don't change state */
   537 		if ( SDL_KeyState[keysym->sym] == state ) {
   538 #if 0
   539 printf("Keyboard event didn't change state - dropped!\n");
   540 #endif
   541 			return(0);
   542 		}
   543 
   544 		/* Update internal keyboard state */
   545 		SDL_ModState = (SDLMod)modstate;
   546 		SDL_KeyState[keysym->sym] = state;
   547 	}
   548 
   549 	/* Post the event, if desired */
   550 	posted = 0;
   551 	if ( SDL_ProcessEvents[event.type] == SDL_ENABLE ) {
   552 		event.key.state = state;
   553 		event.key.keysym = *keysym;
   554 		/*
   555 		 * jk 991215 - Added
   556 		 */
   557 		if (repeatable && (SDL_KeyRepeat.delay != 0)) {
   558 			SDL_KeyRepeat.evt = event;
   559 			SDL_KeyRepeat.firsttime = 1;
   560 			SDL_KeyRepeat.timestamp=SDL_GetTicks();
   561 		}
   562 		if ( (SDL_EventOK == NULL) || SDL_EventOK(&event) ) {
   563 			posted = 1;
   564 			SDL_PushEvent(&event);
   565 		}
   566 	}
   567 	return(posted);
   568 }
   569 
   570 /*
   571  * jk 991215 - Added
   572  */
   573 void SDL_CheckKeyRepeat(void)
   574 {
   575 	if ( SDL_KeyRepeat.timestamp ) {
   576 		Uint32 now, interval;
   577 
   578 		now = SDL_GetTicks();
   579 		interval = (now - SDL_KeyRepeat.timestamp);
   580 		if ( SDL_KeyRepeat.firsttime ) {
   581 			if ( interval > (Uint32)SDL_KeyRepeat.delay ) {
   582 				SDL_KeyRepeat.timestamp = now;
   583 				SDL_KeyRepeat.firsttime = 0;
   584 			}
   585 		} else {
   586 			if ( interval > (Uint32)SDL_KeyRepeat.interval ) {
   587 				SDL_KeyRepeat.timestamp = now;
   588 				if ( (SDL_EventOK == NULL) || SDL_EventOK(&SDL_KeyRepeat.evt) ) {
   589 					SDL_PushEvent(&SDL_KeyRepeat.evt);
   590 				}
   591 			}
   592 		}
   593 	}
   594 }
   595 
   596 int SDL_EnableKeyRepeat(int delay, int interval)
   597 {
   598 	if ( (delay < 0) || (interval < 0) ) {
   599 		SDL_SetError("keyboard repeat value less than zero");
   600 		return(-1);
   601 	}
   602 	SDL_KeyRepeat.firsttime = 0;
   603 	SDL_KeyRepeat.delay = delay;
   604 	SDL_KeyRepeat.interval = interval;
   605 	SDL_KeyRepeat.timestamp = 0;
   606 	return(0);
   607 }
   608 
   609 void SDL_GetKeyRepeat(int *delay, int *interval)
   610 {
   611 	*delay = SDL_KeyRepeat.delay;
   612 	*interval = SDL_KeyRepeat.interval;
   613 }
   614