1 /* 2 SDL - Simple DirectMedia Layer 3 Copyright (C) 1997-2006 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 (at) 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 /* Public functions */ 52 int SDL_KeyboardInit(void) 53 { 54 SDL_VideoDevice *video = current_video; 55 SDL_VideoDevice *this = current_video; 56 57 /* Set default mode of UNICODE translation */ 58 SDL_EnableUNICODE(DEFAULT_UNICODE_TRANSLATION); 59 60 /* Initialize the tables */ 61 SDL_ModState = KMOD_NONE; 62 SDL_memset((void*)keynames, 0, sizeof(keynames)); 63 SDL_memset(SDL_KeyState, 0, sizeof(SDL_KeyState)); 64 video->InitOSKeymap(this); 65 66 SDL_EnableKeyRepeat(0, 0); 67 68 /* Fill in the blanks in keynames */ 69 keynames[SDLK_BACKSPACE] = "backspace"; 70 keynames[SDLK_TAB] = "tab"; 71 keynames[SDLK_CLEAR] = "clear"; 72 keynames[SDLK_RETURN] = "return"; 73 keynames[SDLK_PAUSE] = "pause"; 74 keynames[SDLK_ESCAPE] = "escape"; 75 keynames[SDLK_SPACE] = "space"; 76 keynames[SDLK_EXCLAIM] = "!"; 77 keynames[SDLK_QUOTEDBL] = "\""; 78 keynames[SDLK_HASH] = "#"; 79 keynames[SDLK_DOLLAR] = "$"; 80 keynames[SDLK_AMPERSAND] = "&"; 81 keynames[SDLK_QUOTE] = "'"; 82 keynames[SDLK_LEFTPAREN] = "("; 83 keynames[SDLK_RIGHTPAREN] = ")"; 84 keynames[SDLK_ASTERISK] = "*"; 85 keynames[SDLK_PLUS] = "+"; 86 keynames[SDLK_COMMA] = ","; 87 keynames[SDLK_MINUS] = "-"; 88 keynames[SDLK_PERIOD] = "."; 89 keynames[SDLK_SLASH] = "/"; 90 keynames[SDLK_0] = "0"; 91 keynames[SDLK_1] = "1"; 92 keynames[SDLK_2] = "2"; 93 keynames[SDLK_3] = "3"; 94 keynames[SDLK_4] = "4"; 95 keynames[SDLK_5] = "5"; 96 keynames[SDLK_6] = "6"; 97 keynames[SDLK_7] = "7"; 98 keynames[SDLK_8] = "8"; 99 keynames[SDLK_9] = "9"; 100 keynames[SDLK_COLON] = ":"; 101 keynames[SDLK_SEMICOLON] = ";"; 102 keynames[SDLK_LESS] = "<"; 103 keynames[SDLK_EQUALS] = "="; 104 keynames[SDLK_GREATER] = ">"; 105 keynames[SDLK_QUESTION] = "?"; 106 keynames[SDLK_AT] = "@"; 107 keynames[SDLK_LEFTBRACKET] = "["; 108 keynames[SDLK_BACKSLASH] = "\\"; 109 keynames[SDLK_RIGHTBRACKET] = "]"; 110 keynames[SDLK_CARET] = "^"; 111 keynames[SDLK_UNDERSCORE] = "_"; 112 keynames[SDLK_BACKQUOTE] = "`"; 113 keynames[SDLK_a] = "a"; 114 keynames[SDLK_b] = "b"; 115 keynames[SDLK_c] = "c"; 116 keynames[SDLK_d] = "d"; 117 keynames[SDLK_e] = "e"; 118 keynames[SDLK_f] = "f"; 119 keynames[SDLK_g] = "g"; 120 keynames[SDLK_h] = "h"; 121 keynames[SDLK_i] = "i"; 122 keynames[SDLK_j] = "j"; 123 keynames[SDLK_k] = "k"; 124 keynames[SDLK_l] = "l"; 125 keynames[SDLK_m] = "m"; 126 keynames[SDLK_n] = "n"; 127 keynames[SDLK_o] = "o"; 128 keynames[SDLK_p] = "p"; 129 keynames[SDLK_q] = "q"; 130 keynames[SDLK_r] = "r"; 131 keynames[SDLK_s] = "s"; 132 keynames[SDLK_t] = "t"; 133 keynames[SDLK_u] = "u"; 134 keynames[SDLK_v] = "v"; 135 keynames[SDLK_w] = "w"; 136 keynames[SDLK_x] = "x"; 137 keynames[SDLK_y] = "y"; 138 keynames[SDLK_z] = "z"; 139 keynames[SDLK_DELETE] = "delete"; 140 141 keynames[SDLK_WORLD_0] = "world 0"; 142 keynames[SDLK_WORLD_1] = "world 1"; 143 keynames[SDLK_WORLD_2] = "world 2"; 144 keynames[SDLK_WORLD_3] = "world 3"; 145 keynames[SDLK_WORLD_4] = "world 4"; 146 keynames[SDLK_WORLD_5] = "world 5"; 147 keynames[SDLK_WORLD_6] = "world 6"; 148 keynames[SDLK_WORLD_7] = "world 7"; 149 keynames[SDLK_WORLD_8] = "world 8"; 150 keynames[SDLK_WORLD_9] = "world 9"; 151 keynames[SDLK_WORLD_10] = "world 10"; 152 keynames[SDLK_WORLD_11] = "world 11"; 153 keynames[SDLK_WORLD_12] = "world 12"; 154 keynames[SDLK_WORLD_13] = "world 13"; 155 keynames[SDLK_WORLD_14] = "world 14"; 156 keynames[SDLK_WORLD_15] = "world 15"; 157 keynames[SDLK_WORLD_16] = "world 16"; 158 keynames[SDLK_WORLD_17] = "world 17"; 159 keynames[SDLK_WORLD_18] = "world 18"; 160 keynames[SDLK_WORLD_19] = "world 19"; 161 keynames[SDLK_WORLD_20] = "world 20"; 162 keynames[SDLK_WORLD_21] = "world 21"; 163 keynames[SDLK_WORLD_22] = "world 22"; 164 keynames[SDLK_WORLD_23] = "world 23"; 165 keynames[SDLK_WORLD_24] = "world 24"; 166 keynames[SDLK_WORLD_25] = "world 25"; 167 keynames[SDLK_WORLD_26] = "world 26"; 168 keynames[SDLK_WORLD_27] = "world 27"; 169 keynames[SDLK_WORLD_28] = "world 28"; 170 keynames[SDLK_WORLD_29] = "world 29"; 171 keynames[SDLK_WORLD_30] = "world 30"; 172 keynames[SDLK_WORLD_31] = "world 31"; 173 keynames[SDLK_WORLD_32] = "world 32"; 174 keynames[SDLK_WORLD_33] = "world 33"; 175 keynames[SDLK_WORLD_34] = "world 34"; 176 keynames[SDLK_WORLD_35] = "world 35"; 177 keynames[SDLK_WORLD_36] = "world 36"; 178 keynames[SDLK_WORLD_37] = "world 37"; 179 keynames[SDLK_WORLD_38] = "world 38"; 180 keynames[SDLK_WORLD_39] = "world 39"; 181 keynames[SDLK_WORLD_40] = "world 40"; 182 keynames[SDLK_WORLD_41] = "world 41"; 183 keynames[SDLK_WORLD_42] = "world 42"; 184 keynames[SDLK_WORLD_43] = "world 43"; 185 keynames[SDLK_WORLD_44] = "world 44"; 186 keynames[SDLK_WORLD_45] = "world 45"; 187 keynames[SDLK_WORLD_46] = "world 46"; 188 keynames[SDLK_WORLD_47] = "world 47"; 189 keynames[SDLK_WORLD_48] = "world 48"; 190 keynames[SDLK_WORLD_49] = "world 49"; 191 keynames[SDLK_WORLD_50] = "world 50"; 192 keynames[SDLK_WORLD_51] = "world 51"; 193 keynames[SDLK_WORLD_52] = "world 52"; 194 keynames[SDLK_WORLD_53] = "world 53"; 195 keynames[SDLK_WORLD_54] = "world 54"; 196 keynames[SDLK_WORLD_55] = "world 55"; 197 keynames[SDLK_WORLD_56] = "world 56"; 198 keynames[SDLK_WORLD_57] = "world 57"; 199 keynames[SDLK_WORLD_58] = "world 58"; 200 keynames[SDLK_WORLD_59] = "world 59"; 201 keynames[SDLK_WORLD_60] = "world 60"; 202 keynames[SDLK_WORLD_61] = "world 61"; 203 keynames[SDLK_WORLD_62] = "world 62"; 204 keynames[SDLK_WORLD_63] = "world 63"; 205 keynames[SDLK_WORLD_64] = "world 64"; 206 keynames[SDLK_WORLD_65] = "world 65"; 207 keynames[SDLK_WORLD_66] = "world 66"; 208 keynames[SDLK_WORLD_67] = "world 67"; 209 keynames[SDLK_WORLD_68] = "world 68"; 210 keynames[SDLK_WORLD_69] = "world 69"; 211 keynames[SDLK_WORLD_70] = "world 70"; 212 keynames[SDLK_WORLD_71] = "world 71"; 213 keynames[SDLK_WORLD_72] = "world 72"; 214 keynames[SDLK_WORLD_73] = "world 73"; 215 keynames[SDLK_WORLD_74] = "world 74"; 216 keynames[SDLK_WORLD_75] = "world 75"; 217 keynames[SDLK_WORLD_76] = "world 76"; 218 keynames[SDLK_WORLD_77] = "world 77"; 219 keynames[SDLK_WORLD_78] = "world 78"; 220 keynames[SDLK_WORLD_79] = "world 79"; 221 keynames[SDLK_WORLD_80] = "world 80"; 222 keynames[SDLK_WORLD_81] = "world 81"; 223 keynames[SDLK_WORLD_82] = "world 82"; 224 keynames[SDLK_WORLD_83] = "world 83"; 225 keynames[SDLK_WORLD_84] = "world 84"; 226 keynames[SDLK_WORLD_85] = "world 85"; 227 keynames[SDLK_WORLD_86] = "world 86"; 228 keynames[SDLK_WORLD_87] = "world 87"; 229 keynames[SDLK_WORLD_88] = "world 88"; 230 keynames[SDLK_WORLD_89] = "world 89"; 231 keynames[SDLK_WORLD_90] = "world 90"; 232 keynames[SDLK_WORLD_91] = "world 91"; 233 keynames[SDLK_WORLD_92] = "world 92"; 234 keynames[SDLK_WORLD_93] = "world 93"; 235 keynames[SDLK_WORLD_94] = "world 94"; 236 keynames[SDLK_WORLD_95] = "world 95"; 237 238 keynames[SDLK_KP0] = "[0]"; 239 keynames[SDLK_KP1] = "[1]"; 240 keynames[SDLK_KP2] = "[2]"; 241 keynames[SDLK_KP3] = "[3]"; 242 keynames[SDLK_KP4] = "[4]"; 243 keynames[SDLK_KP5] = "[5]"; 244 keynames[SDLK_KP6] = "[6]"; 245 keynames[SDLK_KP7] = "[7]"; 246 keynames[SDLK_KP8] = "[8]"; 247 keynames[SDLK_KP9] = "[9]"; 248 keynames[SDLK_KP_PERIOD] = "[.]"; 249 keynames[SDLK_KP_DIVIDE] = "[/]"; 250 keynames[SDLK_KP_MULTIPLY] = "[*]"; 251 keynames[SDLK_KP_MINUS] = "[-]"; 252 keynames[SDLK_KP_PLUS] = "[+]"; 253 keynames[SDLK_KP_ENTER] = "enter"; 254 keynames[SDLK_KP_EQUALS] = "equals"; 255 256 keynames[SDLK_UP] = "up"; 257 keynames[SDLK_DOWN] = "down"; 258 keynames[SDLK_RIGHT] = "right"; 259 keynames[SDLK_LEFT] = "left"; 260 keynames[SDLK_DOWN] = "down"; 261 keynames[SDLK_INSERT] = "insert"; 262 keynames[SDLK_HOME] = "home"; 263 keynames[SDLK_END] = "end"; 264 keynames[SDLK_PAGEUP] = "page up"; 265 keynames[SDLK_PAGEDOWN] = "page down"; 266 267 keynames[SDLK_F1] = "f1"; 268 keynames[SDLK_F2] = "f2"; 269 keynames[SDLK_F3] = "f3"; 270 keynames[SDLK_F4] = "f4"; 271 keynames[SDLK_F5] = "f5"; 272 keynames[SDLK_F6] = "f6"; 273 keynames[SDLK_F7] = "f7"; 274 keynames[SDLK_F8] = "f8"; 275 keynames[SDLK_F9] = "f9"; 276 keynames[SDLK_F10] = "f10"; 277 keynames[SDLK_F11] = "f11"; 278 keynames[SDLK_F12] = "f12"; 279 keynames[SDLK_F13] = "f13"; 280 keynames[SDLK_F14] = "f14"; 281 keynames[SDLK_F15] = "f15"; 282 283 keynames[SDLK_NUMLOCK] = "numlock"; 284 keynames[SDLK_CAPSLOCK] = "caps lock"; 285 keynames[SDLK_SCROLLOCK] = "scroll lock"; 286 keynames[SDLK_RSHIFT] = "right shift"; 287 keynames[SDLK_LSHIFT] = "left shift"; 288 keynames[SDLK_RCTRL] = "right ctrl"; 289 keynames[SDLK_LCTRL] = "left ctrl"; 290 keynames[SDLK_RALT] = "right alt"; 291 keynames[SDLK_LALT] = "left alt"; 292 keynames[SDLK_RMETA] = "right meta"; 293 keynames[SDLK_LMETA] = "left meta"; 294 keynames[SDLK_LSUPER] = "left super"; /* "Windows" keys */ 295 keynames[SDLK_RSUPER] = "right super"; 296 keynames[SDLK_MODE] = "alt gr"; 297 keynames[SDLK_COMPOSE] = "compose"; 298 299 keynames[SDLK_HELP] = "help"; 300 keynames[SDLK_PRINT] = "print screen"; 301 keynames[SDLK_SYSREQ] = "sys req"; 302 keynames[SDLK_BREAK] = "break"; 303 keynames[SDLK_MENU] = "menu"; 304 keynames[SDLK_POWER] = "power"; 305 keynames[SDLK_EURO] = "euro"; 306 keynames[SDLK_UNDO] = "undo"; 307 308 /* Done. Whew. */ 309 return(0); 310 } 311 void SDL_KeyboardQuit(void) 312 { 313 } 314 315 /* We lost the keyboard, so post key up messages for all pressed keys */ 316 void SDL_ResetKeyboard(void) 317 { 318 SDL_keysym keysym; 319 SDLKey key; 320 321 SDL_memset(&keysym, 0, (sizeof keysym)); 322 for ( key=SDLK_FIRST; key<SDLK_LAST; ++key ) { 323 if ( SDL_KeyState[key] == SDL_PRESSED ) { 324 keysym.sym = key; 325 SDL_PrivateKeyboard(SDL_RELEASED, &keysym); 326 } 327 } 328 SDL_KeyRepeat.timestamp = 0; 329 } 330 331 int SDL_EnableUNICODE(int enable) 332 { 333 int old_mode; 334 335 old_mode = SDL_TranslateUNICODE; 336 if ( enable >= 0 ) { 337 SDL_TranslateUNICODE = enable; 338 } 339 return(old_mode); 340 } 341 342 Uint8 * SDL_GetKeyState (int *numkeys) 343 { 344 if ( numkeys != (int *)0 ) 345 *numkeys = SDLK_LAST; 346 return(SDL_KeyState); 347 } 348 SDLMod SDL_GetModState (void) 349 { 350 return(SDL_ModState); 351 } 352 void SDL_SetModState (SDLMod modstate) 353 { 354 SDL_ModState = modstate; 355 } 356 357 char *SDL_GetKeyName(SDLKey key) 358 { 359 const char *keyname; 360 361 keyname = NULL; 362 if ( key < SDLK_LAST ) { 363 keyname = keynames[key]; 364 } 365 if ( keyname == NULL ) { 366 keyname = "unknown key"; 367 } 368 /* FIXME: make this function const in 1.3 */ 369 return (char *)(keyname); 370 } 371 372 /* These are global for SDL_eventloop.c */ 373 int SDL_PrivateKeyboard(Uint8 state, SDL_keysym *keysym) 374 { 375 SDL_Event event; 376 int posted, repeatable; 377 Uint16 modstate; 378 379 SDL_memset(&event, 0, sizeof(event)); 380 381 #if 0 382 printf("The '%s' key has been %s\n", SDL_GetKeyName(keysym->sym), 383 state == SDL_PRESSED ? "pressed" : "released"); 384 #endif 385 /* Set up the keysym */ 386 modstate = (Uint16)SDL_ModState; 387 388 repeatable = 0; 389 390 if ( state == SDL_PRESSED ) { 391 keysym->mod = (SDLMod)modstate; 392 switch (keysym->sym) { 393 case SDLK_UNKNOWN: 394 break; 395 case SDLK_NUMLOCK: 396 modstate ^= KMOD_NUM; 397 if ( ! (modstate&KMOD_NUM) ) 398 state = SDL_RELEASED; 399 keysym->mod = (SDLMod)modstate; 400 break; 401 case SDLK_CAPSLOCK: 402 modstate ^= KMOD_CAPS; 403 if ( ! (modstate&KMOD_CAPS) ) 404 state = SDL_RELEASED; 405 keysym->mod = (SDLMod)modstate; 406 break; 407 case SDLK_LCTRL: 408 modstate |= KMOD_LCTRL; 409 break; 410 case SDLK_RCTRL: 411 modstate |= KMOD_RCTRL; 412 break; 413 case SDLK_LSHIFT: 414 modstate |= KMOD_LSHIFT; 415 break; 416 case SDLK_RSHIFT: 417 modstate |= KMOD_RSHIFT; 418 break; 419 case SDLK_LALT: 420 modstate |= KMOD_LALT; 421 break; 422 case SDLK_RALT: 423 modstate |= KMOD_RALT; 424 break; 425 case SDLK_LMETA: 426 modstate |= KMOD_LMETA; 427 break; 428 case SDLK_RMETA: 429 modstate |= KMOD_RMETA; 430 break; 431 case SDLK_MODE: 432 modstate |= KMOD_MODE; 433 break; 434 default: 435 repeatable = 1; 436 break; 437 } 438 } else { 439 switch (keysym->sym) { 440 case SDLK_UNKNOWN: 441 break; 442 case SDLK_NUMLOCK: 443 case SDLK_CAPSLOCK: 444 /* Only send keydown events */ 445 return(0); 446 case SDLK_LCTRL: 447 modstate &= ~KMOD_LCTRL; 448 break; 449 case SDLK_RCTRL: 450 modstate &= ~KMOD_RCTRL; 451 break; 452 case SDLK_LSHIFT: 453 modstate &= ~KMOD_LSHIFT; 454 break; 455 case SDLK_RSHIFT: 456 modstate &= ~KMOD_RSHIFT; 457 break; 458 case SDLK_LALT: 459 modstate &= ~KMOD_LALT; 460 break; 461 case SDLK_RALT: 462 modstate &= ~KMOD_RALT; 463 break; 464 case SDLK_LMETA: 465 modstate &= ~KMOD_LMETA; 466 break; 467 case SDLK_RMETA: 468 modstate &= ~KMOD_RMETA; 469 break; 470 case SDLK_MODE: 471 modstate &= ~KMOD_MODE; 472 break; 473 default: 474 break; 475 } 476 keysym->mod = (SDLMod)modstate; 477 } 478 479 /* Figure out what type of event this is */ 480 switch (state) { 481 case SDL_PRESSED: 482 event.type = SDL_KEYDOWN; 483 break; 484 case SDL_RELEASED: 485 event.type = SDL_KEYUP; 486 /* 487 * jk 991215 - Added 488 */ 489 if ( SDL_KeyRepeat.timestamp && 490 SDL_KeyRepeat.evt.key.keysym.sym == keysym->sym ) { 491 SDL_KeyRepeat.timestamp = 0; 492 } 493 break; 494 default: 495 /* Invalid state -- bail */ 496 return(0); 497 } 498 499 if ( keysym->sym != SDLK_UNKNOWN ) { 500 /* Drop events that don't change state */ 501 if ( SDL_KeyState[keysym->sym] == state ) { 502 #if 0 503 printf("Keyboard event didn't change state - dropped!\n"); 504 #endif 505 return(0); 506 } 507 508 /* Update internal keyboard state */ 509 SDL_ModState = (SDLMod)modstate; 510 SDL_KeyState[keysym->sym] = state; 511 } 512 513 /* Post the event, if desired */ 514 posted = 0; 515 if ( SDL_ProcessEvents[event.type] == SDL_ENABLE ) { 516 event.key.state = state; 517 event.key.keysym = *keysym; 518 /* 519 * jk 991215 - Added 520 */ 521 if (repeatable && (SDL_KeyRepeat.delay != 0)) { 522 SDL_KeyRepeat.evt = event; 523 SDL_KeyRepeat.firsttime = 1; 524 SDL_KeyRepeat.timestamp=SDL_GetTicks(); 525 } 526 if ( (SDL_EventOK == NULL) || SDL_EventOK(&event) ) { 527 posted = 1; 528 SDL_PushEvent(&event); 529 } 530 } 531 return(posted); 532 } 533 534 /* 535 * jk 991215 - Added 536 */ 537 void SDL_CheckKeyRepeat(void) 538 { 539 if ( SDL_KeyRepeat.timestamp ) { 540 Uint32 now, interval; 541 542 now = SDL_GetTicks(); 543 interval = (now - SDL_KeyRepeat.timestamp); 544 if ( SDL_KeyRepeat.firsttime ) { 545 if ( interval > (Uint32)SDL_KeyRepeat.delay ) { 546 SDL_KeyRepeat.timestamp = now; 547 SDL_KeyRepeat.firsttime = 0; 548 } 549 } else { 550 if ( interval > (Uint32)SDL_KeyRepeat.interval ) { 551 SDL_KeyRepeat.timestamp = now; 552 if ( (SDL_EventOK == NULL) || SDL_EventOK(&SDL_KeyRepeat.evt) ) { 553 SDL_PushEvent(&SDL_KeyRepeat.evt); 554 } 555 } 556 } 557 } 558 } 559 560 int SDL_EnableKeyRepeat(int delay, int interval) 561 { 562 if ( (delay < 0) || (interval < 0) ) { 563 SDL_SetError("keyboard repeat value less than zero"); 564 return(-1); 565 } 566 SDL_KeyRepeat.firsttime = 0; 567 SDL_KeyRepeat.delay = delay; 568 SDL_KeyRepeat.interval = interval; 569 SDL_KeyRepeat.timestamp = 0; 570 return(0); 571 } 572 573 void SDL_GetKeyRepeat(int *delay, int *interval) 574 { 575 *delay = SDL_KeyRepeat.delay; 576 *interval = SDL_KeyRepeat.interval; 577 } 578 579
