arch/sdl/key.c

   1 /*
   2  *
   3  * SDL keyboard input support
   4  *
   5  *
   6  */
   7
   8 #ifdef HAVE_CONFIG_H
   9 #include <conf.h>
  10 #endif
  11
  12 #include <stdio.h>
  13 #include <stdlib.h>
  14
  15 #include <SDL.h>
  16
  17 #include "event.h"
  18 #include "error.h"
  19 #include "key.h"
  20 #include "timer.h"
  21
  22
  23 #define KEY_BUFFER_SIZE 16
  24
  25 static unsigned char Installed = 0;
  26
  27 //-------- Variable accessed by outside functions ---------
  28 unsigned char           keyd_buffer_type;               // 0=No buffer, 1=buffer ASCII, 2=buffer scans
  29 unsigned char           keyd_repeat;
  30 unsigned char           keyd_editor_mode;
  31 volatile unsigned char  keyd_last_pressed;
  32 volatile unsigned char  keyd_last_released;
  33 volatile unsigned char  keyd_pressed[256];
  34 volatile int            keyd_time_when_last_pressed;
  35
  36 typedef struct Key_info {
  37         ubyte           state;                  // state of key 1 == down, 0 == up
  38         ubyte           last_state;             // previous state of key
  39         int             counter;                // incremented each time key is down in handler
  40         fix             timewentdown;   // simple counter incremented each time in interrupt and key is down
  41         fix             timehelddown;   // counter to tell how long key is down -- gets reset to 0 by key routines
  42         ubyte           downcount;              // number of key counts key was down
  43         ubyte           upcount;                // number of times key was released
  44 } Key_info;
  45
  46 typedef struct keyboard {
  47         unsigned short          keybuffer[KEY_BUFFER_SIZE];
  48         Key_info                keys[256];
  49         fix                     time_pressed[KEY_BUFFER_SIZE];
  50         unsigned int            keyhead, keytail;
  51 } keyboard;
  52
  53 static keyboard key_data;
  54
  55 typedef struct key_props {
  56         char *key_text;
  57         unsigned char ascii_value;
  58         unsigned char shifted_ascii_value;
  59         SDLKey sym;
  60 } key_props;
  61
  62 key_props key_properties[256] = {
  63 { "",       255,    255,    -1                 },
  64 { "ESC",    255,    255,    SDLK_ESCAPE        },
  65 { "1",      '1',    '!',    SDLK_1             },
  66 { "2",      '2',    '@',    SDLK_2             },
  67 { "3",      '3',    '#',    SDLK_3             },
  68 { "4",      '4',    '$',    SDLK_4             },
  69 { "5",      '5',    '%',    SDLK_5             },
  70 { "6",      '6',    '^',    SDLK_6             },
  71 { "7",      '7',    '&',    SDLK_7             },
  72 { "8",      '8',    '*',    SDLK_8             },
  73 { "9",      '9',    '(',    SDLK_9             },
  74 { "0",      '0',    ')',    SDLK_0             },
  75 { "-",      '-',    '_',    SDLK_MINUS         },
  76 { "=",      '=',    '+',    SDLK_EQUALS        },
  77 { "BSPC",   255,    255,    SDLK_BACKSPACE     },
  78 { "TAB",    255,    255,    SDLK_TAB           },
  79 { "Q",      'q',    'Q',    SDLK_q             },
  80 { "W",      'w',    'W',    SDLK_w             },
  81 { "E",      'e',    'E',    SDLK_e             },
  82 { "R",      'r',    'R',    SDLK_r             },
  83 { "T",      't',    'T',    SDLK_t             },
  84 { "Y",      'y',    'Y',    SDLK_y             },
  85 { "U",      'u',    'U',    SDLK_u             },
  86 { "I",      'i',    'I',    SDLK_i             },
  87 { "O",      'o',    'O',    SDLK_o             },
  88 { "P",      'p',    'P',    SDLK_p             },
  89 { "[",      '[',    '{',    SDLK_LEFTBRACKET   },
  90 { "]",      ']',    '}',    SDLK_RIGHTBRACKET  },
  91 //edited 06/08/99 Matt Mueller - set to correct key_text
  92 { "\x83",   255,    255,    SDLK_RETURN        },
  93 //end edit -MM
  94 { "LCTRL",  255,    255,    SDLK_LCTRL         },
  95 { "A",      'a',    'A',    SDLK_a             },
  96 { "S",      's',    'S',    SDLK_s             },
  97 { "D",      'd',    'D',    SDLK_d             },
  98 { "F",      'f',    'F',    SDLK_f             },
  99 { "G",      'g',    'G',    SDLK_g             },
 100 { "H",      'h',    'H',    SDLK_h             },
 101 { "J",      'j',    'J',    SDLK_j             },
 102 { "K",      'k',    'K',    SDLK_k             },
 103 { "L",      'l',    'L',    SDLK_l             },
 104 //edited 06/08/99 Matt Mueller - set to correct sym
 105 { ";",      ';',    ':',    SDLK_SEMICOLON         },
 106 //end edit -MM
 107 { "'",      '\'',   '"',    SDLK_QUOTE         },
 108 //edited 06/08/99 Matt Mueller - set to correct sym
 109 { "`",      '`',    '~',    SDLK_BACKQUOTE     },
 110 //end edit -MM
 111 { "LSHFT",  255,    255,    SDLK_LSHIFT        },
 112 { "\\",     '\\',   '|',    SDLK_BACKSLASH     },
 113 { "Z",      'z',    'Z',    SDLK_z             },
 114 { "X",      'x',    'X',    SDLK_x             },
 115 { "C",      'c',    'C',    SDLK_c             },
 116 { "V",      'v',    'V',    SDLK_v             },
 117 { "B",      'b',    'B',    SDLK_b             },
 118 { "N",      'n',    'N',    SDLK_n             },
 119 { "M",      'm',    'M',    SDLK_m             },
 120 //edited 06/08/99 Matt Mueller - set to correct syms
 121 { ",",      ',',    '<',    SDLK_COMMA  },
 122 { ".",      '.',    '>',    SDLK_PERIOD },
 123 { "/",      '/',    '?',    SDLK_SLASH  },
 124 //end edit -MM
 125 { "RSHFT",  255,    255,    SDLK_RSHIFT },
 126 { "PAD*",   '*',    255,    SDLK_KP_MULTIPLY   },
 127 { "LALT",   255,    255,    SDLK_LALT          },
 128 { "SPC",    ' ',    ' ',    SDLK_SPACE         },
 129 { "CPSLK",  255,    255,    SDLK_CAPSLOCK      },
 130 { "F1",     255,    255,    SDLK_F1            },
 131 { "F2",     255,    255,    SDLK_F2            },
 132 { "F3",     255,    255,    SDLK_F3            },
 133 { "F4",     255,    255,    SDLK_F4            },
 134 { "F5",     255,    255,    SDLK_F5            },
 135 { "F6",     255,    255,    SDLK_F6            },
 136 { "F7",     255,    255,    SDLK_F7            },
 137 { "F8",     255,    255,    SDLK_F8            },
 138 { "F9",     255,    255,    SDLK_F9            },
 139 { "F10",    255,    255,    SDLK_F10           },
 140 { "NMLCK",  255,    255,    SDLK_NUMLOCK       },
 141 { "SCLK",   255,    255,    SDLK_SCROLLOCK     },
 142 { "PAD7",   255,    255,    SDLK_KP7           },
 143 { "PAD8",   255,    255,    SDLK_KP8           },
 144 { "PAD9",   255,    255,    SDLK_KP9           },
 145 { "PAD-",   255,    255,    SDLK_KP_MINUS      },
 146 { "PAD4",   255,    255,    SDLK_KP4           },
 147 { "PAD5",   255,    255,    SDLK_KP5           },
 148 { "PAD6",   255,    255,    SDLK_KP6           },
 149 { "PAD+",   255,    255,    SDLK_KP_PLUS       },
 150 { "PAD1",   255,    255,    SDLK_KP1           },
 151 { "PAD2",   255,    255,    SDLK_KP2           },
 152 { "PAD3",   255,    255,    SDLK_KP3           },
 153 { "PAD0",   255,    255,    SDLK_KP0           },
 154 { "PAD.",   255,    255,    SDLK_KP_PERIOD     },
 155 { "",       255,    255,    -1                 },
 156 { "",       255,    255,    -1                 },
 157 { "",       255,    255,    -1                 },
 158 { "F11",    255,    255,    SDLK_F11           },
 159 { "F12",    255,    255,    SDLK_F12           },
 160 { "",       255,    255,    -1                 },
 161 { "",       255,    255,    -1                 },
 162 { "",       255,    255,    -1                 },
 163 { "",       255,    255,    -1                 },
 164 { "",       255,    255,    -1                 },
 165 { "",       255,    255,    -1                 },
 166 { "",       255,    255,    -1                 },
 167 { "",       255,    255,    -1                 },
 168 //edited 06/08/99 Matt Mueller - add pause ability
 169 { "PAUSE",       255,    255,    SDLK_PAUSE                 },
 170 //end edit -MM
 171 { "",       255,    255,    -1                 },
 172 { "",       255,    255,    -1                 },
 173 { "",       255,    255,    -1                 },
 174 { "",       255,    255,    -1                 },
 175 { "",       255,    255,    -1                 },
 176 { "",       255,    255,    -1                 },
 177 { "",       255,    255,    -1                 },
 178 { "",       255,    255,    -1                 },
 179 { "",       255,    255,    -1                 },
 180 { "",       255,    255,    -1                 },
 181 { "",       255,    255,    -1                 },
 182 { "",       255,    255,    -1                 },
 183 { "",       255,    255,    -1                 },
 184 { "",       255,    255,    -1                 },
 185 { "",       255,    255,    -1                 },
 186 { "",       255,    255,    -1                 },
 187 { "",       255,    255,    -1                 },
 188 { "",       255,    255,    -1                 },
 189 { "",       255,    255,    -1                 },
 190 { "",       255,    255,    -1                 },
 191 { "",       255,    255,    -1                 },
 192 { "",       255,    255,    -1                 },
 193 { "",       255,    255,    -1                 },
 194 { "",       255,    255,    -1                 },
 195 { "",       255,    255,    -1                 },
 196 { "",       255,    255,    -1                 },
 197 { "",       255,    255,    -1                 },
 198 { "",       255,    255,    -1                 },
 199 { "",       255,    255,    -1                 },
 200 { "",       255,    255,    -1                 },
 201 { "",       255,    255,    -1                 },
 202 { "",       255,    255,    -1                 },
 203 { "",       255,    255,    -1                 },
 204 { "",       255,    255,    -1                 },
 205 { "",       255,    255,    -1                 },
 206 { "",       255,    255,    -1                 },
 207 { "",       255,    255,    -1                 },
 208 { "",       255,    255,    -1                 },
 209 { "",       255,    255,    -1                 },
 210 { "",       255,    255,    -1                 },
 211 { "",       255,    255,    -1                 },
 212 { "",       255,    255,    -1                 },
 213 { "",       255,    255,    -1                 },
 214 { "",       255,    255,    -1                 },
 215 { "",       255,    255,    -1                 },
 216 { "",       255,    255,    -1                 },
 217 { "",       255,    255,    -1                 },
 218 { "",       255,    255,    -1                 },
 219 { "",       255,    255,    -1                 },
 220 { "",       255,    255,    -1                 },
 221 { "",       255,    255,    -1                 },
 222 { "",       255,    255,    -1                 },
 223 { "",       255,    255,    -1                 },
 224 { "",       255,    255,    -1                 },
 225 { "",       255,    255,    -1                 },
 226 { "",       255,    255,    -1                 },
 227 { "",       255,    255,    -1                 },
 228 { "",       255,    255,    -1                 },
 229 //edited 06/08/99 Matt Mueller - set to correct key_text
 230 { "PAD\x83",255,    255,    SDLK_KP_ENTER      },
 231 //end edit -MM
 232 //edited 06/08/99 Matt Mueller - set to correct sym
 233 { "RCTRL",  255,    255,    SDLK_RCTRL            },
 234 //end edit -MM
 235 { "LCMD",   255,    255,    SDLK_LMETA         },
 236 { "RCMD",   255,    255,    SDLK_RMETA         },
 237 { "",       255,    255,    -1                 },
 238 { "",       255,    255,    -1                 },
 239 { "",       255,    255,    -1                 },
 240 { "",       255,    255,    -1                 },
 241 { "",       255,    255,    -1                 },
 242 { "",       255,    255,    -1                 },
 243 { "",       255,    255,    -1                 },
 244 { "",       255,    255,    -1                 },
 245 { "",       255,    255,    -1                 },
 246 { "",       255,    255,    -1                 },
 247 { "",       255,    255,    -1                 },
 248 { "",       255,    255,    -1                 },
 249 { "",       255,    255,    -1                 },
 250 { "",       255,    255,    -1                 },
 251 { "",       255,    255,    -1                 },
 252 { "",       255,    255,    -1                 },
 253 { "",       255,    255,    -1                 },
 254 { "",       255,    255,    -1                 },
 255 { "",       255,    255,    -1                 },
 256 { "",       255,    255,    -1                 },
 257 { "",       255,    255,    -1                 },
 258 { "PAD/",   255,    255,    SDLK_KP_DIVIDE     },
 259 { "",       255,    255,    -1                 },
 260 //edited 06/08/99 Matt Mueller - add printscreen ability
 261 { "PRSCR",       255,    255,    SDLK_PRINT                 },
 262 //end edit -MM
 263 { "RALT",   255,    255,    SDLK_RALT          },
 264 { "",       255,    255,    -1                 },
 265 { "",       255,    255,    -1                 },
 266 { "",       255,    255,    -1                 },
 267 { "",       255,    255,    -1                 },
 268 { "",       255,    255,    -1                 },
 269 { "",       255,    255,    -1                 },
 270 { "",       255,    255,    -1                 },
 271 { "",       255,    255,    -1                 },
 272 { "",       255,    255,    -1                 },
 273 { "",       255,    255,    -1                 },
 274 { "",       255,    255,    -1                 },
 275 { "",       255,    255,    -1                 },
 276 { "",       255,    255,    -1                 },
 277 { "",       255,    255,    -1                 },
 278 { "HOME",   255,    255,    SDLK_HOME          },
 279 //edited 06/08/99 Matt Mueller - set to correct key_text
 280 { "UP",         255,    255,    SDLK_UP            },
 281 //end edit -MM
 282 { "PGUP",   255,    255,    SDLK_PAGEUP        },
 283 { "",       255,    255,    -1                 },
 284 //edited 06/08/99 Matt Mueller - set to correct key_text
 285 { "LEFT",       255,    255,    SDLK_LEFT          },
 286 //end edit -MM
 287 { "",       255,    255,    -1                 },
 288 //edited 06/08/99 Matt Mueller - set to correct key_text
 289 { "RIGHT",      255,    255,    SDLK_RIGHT         },
 290 //end edit -MM
 291 { "",       255,    255,    -1                 },
 292 //edited 06/08/99 Matt Mueller - set to correct key_text
 293 { "END",    255,    255,    SDLK_END           },
 294 //end edit -MM
 295 { "DOWN",       255,    255,    SDLK_DOWN          },
 296 { "PGDN",       255,    255,    SDLK_PAGEDOWN      },
 297 { "INS",        255,    255,    SDLK_INSERT        },
 298 { "DEL",        255,    255,    SDLK_DELETE        },
 299 { "",       255,    255,    -1                 },
 300 { "",       255,    255,    -1                 },
 301 { "",       255,    255,    -1                 },
 302 { "",       255,    255,    -1                 },
 303 { "",       255,    255,    -1                 },
 304 { "",       255,    255,    -1                 },
 305 { "",       255,    255,    -1                 },
 306 { "",       255,    255,    -1                 },
 307 { "",       255,    255,    -1                 },
 308 { "",       255,    255,    -1                 },
 309 { "",       255,    255,    -1                 },
 310 { "",       255,    255,    -1                 },
 311 { "",       255,    255,    -1                 },
 312 { "",       255,    255,    -1                 },
 313 { "",       255,    255,    -1                 },
 314 { "",       255,    255,    -1                 },
 315 { "",       255,    255,    -1                 },
 316 { "",       255,    255,    -1                 },
 317 { "",       255,    255,    -1                 },
 318 { "",       255,    255,    -1                 },
 319 { "",       255,    255,    -1                 },
 320 { "",       255,    255,    -1                 },
 321 { "",       255,    255,    -1                 },
 322 { "",       255,    255,    -1                 },
 323 { "",       255,    255,    -1                 },
 324 { "",       255,    255,    -1                 },
 325 { "",       255,    255,    -1                 },
 326 { "",       255,    255,    -1                 },
 327 { "",       255,    255,    -1                 },
 328 { "",       255,    255,    -1                 },
 329 { "",       255,    255,    -1                 },
 330 { "",       255,    255,    -1                 },
 331 { "",       255,    255,    -1                 },
 332 { "",       255,    255,    -1                 },
 333 { "",       255,    255,    -1                 },
 334 { "",       255,    255,    -1                 },
 335 { "",       255,    255,    -1                 },
 336 { "",       255,    255,    -1                 },
 337 { "",       255,    255,    -1                 },
 338 { "",       255,    255,    -1                 },
 339 { "",       255,    255,    -1                 },
 340 { "",       255,    255,    -1                 },
 341 { "",       255,    255,    -1                 },
 342 { "",       255,    255,    -1                 },
 343 };
 344
 345 char *key_text[256];
 346
 347 void key_buid_key_text(void)
 348 {
 349 }
 350
 351 unsigned char key_to_ascii(int keycode )
 352 {
 353         int shifted;
 354
 355         shifted = keycode & KEY_SHIFTED;
 356         keycode &= 0xFF;
 357
 358         if (shifted)
 359                 return key_properties[keycode].shifted_ascii_value;
 360         else
 361                 return key_properties[keycode].ascii_value;
 362 }
 363
 364 void key_handler(SDL_KeyboardEvent *event)
 365 {
 366         ubyte state;
 367         int i, keycode, event_key, key_state;
 368         Key_info *key;
 369         unsigned char temp;
 370
 371         event_key = event->keysym.sym;
 372
 373         key_state = (event->state == SDL_PRESSED); //  !(wInfo & KF_UP);
 374         //=====================================================
 375         //Here a translation from win keycodes to mac keycodes!
 376         //=====================================================
 377
 378         for (i = 255; i >= 0; i--) {
 379
 380                 keycode = i;
 381                 key = &(key_data.keys[keycode]);
 382                 if (key_properties[i].sym == event_key)
 383                         state = key_state;
 384                 else
 385                         state = key->last_state;
 386
 387                 if ( key->last_state == state ) {
 388                         if (state) {
 389                                 key->counter++;
 390                                 keyd_last_pressed = keycode;
 391                                 keyd_time_when_last_pressed = timer_get_fixed_seconds();
 392                         }
 393                 } else {
 394                         if (state)      {
 395                                 keyd_last_pressed = keycode;
 396                                 keyd_pressed[keycode] = 1;
 397                                 key->downcount += state;
 398                                 key->state = 1;
 399                                 key->timewentdown = keyd_time_when_last_pressed = timer_get_fixed_seconds();
 400                                 key->counter++;
 401                         } else {
 402                                 keyd_pressed[keycode] = 0;
 403                                 keyd_last_released = keycode;
 404                                 key->upcount += key->state;
 405                                 key->state = 0;
 406                                 key->counter = 0;
 407                                 key->timehelddown += timer_get_fixed_seconds() - key->timewentdown;
 408                         }
 409                 }
 410                 if ( (state && !key->last_state) || (state && key->last_state && (key->counter > 30) && (key->counter & 0x01)) ) {
 411                         if ( keyd_pressed[KEY_LSHIFT] || keyd_pressed[KEY_RSHIFT])
 412                                 keycode |= KEY_SHIFTED;
 413                         if ( keyd_pressed[KEY_LALT] || keyd_pressed[KEY_RALT])
 414                                 keycode |= KEY_ALTED;
 415                         if ( keyd_pressed[KEY_LCTRL] || keyd_pressed[KEY_RCTRL])
 416                                 keycode |= KEY_CTRLED;
 417                         if ( keyd_pressed[KEY_DELETE] )
 418                                 keycode |= KEY_DEBUGGED;
 419                         if ( keyd_pressed[KEY_LMETA] || keyd_pressed[KEY_RMETA])
 420                                 keycode |= KEY_METAED;
 421
 422                         temp = key_data.keytail+1;
 423                         if ( temp >= KEY_BUFFER_SIZE ) temp=0;
 424                         if (temp!=key_data.keyhead)     {
 425                                 key_data.keybuffer[key_data.keytail] = keycode;
 426                                 key_data.time_pressed[key_data.keytail] = keyd_time_when_last_pressed;
 427                                 key_data.keytail = temp;
 428                         }
 429                 }
 430                 key->last_state = state;
 431         }
 432 }
 433
 434 void key_close()
 435 {
 436  Installed = 0;
 437 }
 438
 439 void key_init()
 440 {
 441   int i;
 442
 443   if (Installed) return;
 444
 445   Installed=1;
 446
 447   keyd_time_when_last_pressed = timer_get_fixed_seconds();
 448   keyd_buffer_type = 1;
 449   keyd_repeat = 1;
 450
 451   for(i=0; i<256; i++)
 452      key_text[i] = key_properties[i].key_text;
 453
 454   // Clear the keyboard array
 455   key_flush();
 456   atexit(key_close);
 457 }
 458
 459 void key_flush()
 460 {
 461         int i;
 462         fix curtime;
 463
 464         if (!Installed)
 465                 key_init();
 466
 467         key_data.keyhead = key_data.keytail = 0;
 468
 469         //Clear the keyboard buffer
 470         for (i=0; i<KEY_BUFFER_SIZE; i++ )      {
 471                 key_data.keybuffer[i] = 0;
 472                 key_data.time_pressed[i] = 0;
 473         }
 474
 475 //use gettimeofday here:
 476         curtime = timer_get_fixed_seconds();
 477
 478         for (i=0; i<256; i++ )  {
 479                 keyd_pressed[i] = 0;
 480                 key_data.keys[i].state = 1;
 481                 key_data.keys[i].last_state = 0;
 482                 key_data.keys[i].timewentdown = curtime;
 483                 key_data.keys[i].downcount=0;
 484                 key_data.keys[i].upcount=0;
 485                 key_data.keys[i].timehelddown = 0;
 486                 key_data.keys[i].counter = 0;
 487         }
 488 }
 489
 490 int add_one(int n)
 491 {
 492  n++;
 493  if ( n >= KEY_BUFFER_SIZE ) n=0;
 494  return n;
 495 }
 496
 497 int key_checkch()
 498 {
 499         int is_one_waiting = 0;
 500         event_poll();
 501         if (key_data.keytail!=key_data.keyhead)
 502                 is_one_waiting = 1;
 503         return is_one_waiting;
 504 }
 505
 506 int key_inkey()
 507 {
 508         int key = 0;
 509         if (!Installed)
 510                 key_init();
 511         event_poll();
 512         if (key_data.keytail!=key_data.keyhead) {
 513                 key = key_data.keybuffer[key_data.keyhead];
 514                 key_data.keyhead = add_one(key_data.keyhead);
 515         }
 516 //added 9/3/98 by Matt Mueller to free cpu time instead of hogging during menus and such
 517         else timer_delay(1);
 518 //end addition - Matt Mueller
 519
 520         return key;
 521 }
 522
 523 int key_inkey_time(fix * time)
 524 {
 525         int key = 0;
 526
 527         if (!Installed)
 528                 key_init();
 529         event_poll();
 530         if (key_data.keytail!=key_data.keyhead) {
 531                 key = key_data.keybuffer[key_data.keyhead];
 532                 *time = key_data.time_pressed[key_data.keyhead];
 533                 key_data.keyhead = add_one(key_data.keyhead);
 534         }
 535         return key;
 536 }
 537
 538 int key_peekkey()
 539 {
 540         int key = 0;
 541         event_poll();
 542         if (key_data.keytail!=key_data.keyhead)
 543                 key = key_data.keybuffer[key_data.keyhead];
 544
 545         return key;
 546 }
 547
 548 int key_getch()
 549 {
 550         int dummy=0;
 551
 552         if (!Installed)
 553                 return 0;
 554 //              return getch();
 555
 556         while (!key_checkch())
 557                 dummy++;
 558         return key_inkey();
 559 }
 560
 561 unsigned int key_get_shift_status()
 562 {
 563         unsigned int shift_status = 0;
 564
 565         if ( keyd_pressed[KEY_LSHIFT] || keyd_pressed[KEY_RSHIFT] )
 566                 shift_status |= KEY_SHIFTED;
 567
 568         if ( keyd_pressed[KEY_LALT] || keyd_pressed[KEY_RALT] )
 569                 shift_status |= KEY_ALTED;
 570
 571         if ( keyd_pressed[KEY_LCTRL] || keyd_pressed[KEY_RCTRL] )
 572                 shift_status |= KEY_CTRLED;
 573
 574         if ( keyd_pressed[KEY_LMETA] || keyd_pressed[KEY_RMETA] )
 575                 shift_status |= KEY_METAED;
 576
 577 #ifndef NDEBUG
 578         if (keyd_pressed[KEY_DELETE])
 579                 shift_status |=KEY_DEBUGGED;
 580 #endif
 581
 582         return shift_status;
 583 }
 584
 585 // Returns the number of seconds this key has been down since last call.
 586 fix key_down_time(int scancode)
 587 {
 588         fix time_down, time;
 589
 590         event_poll();
 591         if ((scancode<0)|| (scancode>255)) return 0;
 592
 593         if (!keyd_pressed[scancode]) {
 594                 time_down = key_data.keys[scancode].timehelddown;
 595                 key_data.keys[scancode].timehelddown = 0;
 596         } else {
 597                 time = timer_get_fixed_seconds();
 598                 time_down = time - key_data.keys[scancode].timewentdown;
 599                 key_data.keys[scancode].timewentdown = time;
 600         }
 601
 602         return time_down;
 603 }
 604
 605 unsigned int key_down_count(int scancode)
 606 {
 607         int n;
 608         event_poll();
 609         if ((scancode<0)|| (scancode>255)) return 0;
 610
 611         n = key_data.keys[scancode].downcount;
 612         key_data.keys[scancode].downcount = 0;
 613
 614         return n;
 615 }
 616
 617 unsigned int key_up_count(int scancode)
 618 {
 619         int n;
 620         event_poll();
 621         if ((scancode<0)|| (scancode>255)) return 0;
 622
 623         n = key_data.keys[scancode].upcount;
 624         key_data.keys[scancode].upcount = 0;
 625
 626         return n;
 627 }