common/action.c

   1 #include "host.h"
   2 #include "timer.h"
   3 #include "keymap.h"
   4 #include "keycode.h"
   5 #include "keyboard.h"
   6 #include "mousekey.h"
   7 #include "command.h"
   8 #include "util.h"
   9 #include "debug.h"
  10 #include "action.h"
  11
  12
  13 static void process(keyevent_t event);
  14 static void register_code(uint8_t code);
  15 static void unregister_code(uint8_t code);
  16 static void add_mods(uint8_t mods);
  17 static void del_mods(uint8_t mods);
  18 static void set_mods(uint8_t mods);
  19 static void clear_keyboard(void);
  20 static void clear_keyboard_but_mods(void);
  21 static bool sending_anykey(void);
  22 static void layer_switch(uint8_t new_layer);
  23
  24
  25 /* tap */
  26 #define TAP_TIME    200
  27 static keyevent_t last_event = {};
  28 static uint8_t tap_count = 0;
  29
  30 /* layer */
  31 uint8_t default_layer = 0;
  32 uint8_t current_layer = 0;
  33 static keyrecord_t tapping_key = {};
  34 // time 0 means no event.
  35 #define IS_TAPPING      (tapping_key.event.time != 0)
  36 /* TODO:
  37 #define IS_TAPPING_KEY(key) (tapping_key.event.time != 0 && KEYEQ(tapping_key.event.key, key))
  38  */
  39
  40 /* waiting keys buffer */
  41 #define WAITING_KEYS_BUFFER 3
  42 static keyrecord_t waiting_keys[WAITING_KEYS_BUFFER] = {};
  43 // TODO: double buffer?
  44 static keyrecord_t waiting_keys0[WAITING_KEYS_BUFFER] = {};
  45 static keyrecord_t waiting_keys1[WAITING_KEYS_BUFFER] = {};
  46 static uint8_t waiting_keys_head = 0;
  47 static bool waiting_keys_enqueue(keyevent_t event)
  48 {
  49     debug("waiting_keys["); debug_dec(waiting_keys_head); debug("] = ");
  50     debug_hex16(event.key.raw); debug("\n");
  51     if (waiting_keys_head < WAITING_KEYS_BUFFER) {
  52         waiting_keys[waiting_keys_head++] = (keyrecord_t){ .event = event,
  53                                                            .mods = host_get_mods() };
  54     } else {
  55         return true;
  56     }
  57 }
  58 static void waiting_keys_clear(void)
  59 {
  60     waiting_keys_head = 0;
  61 }
  62 static bool waiting_keys_has(key_t key)
  63 {
  64     for (uint8_t i = 0; i < waiting_keys_head; i++) {
  65         if KEYEQ(key, waiting_keys[i].event.key) return true;
  66     }
  67     return false;
  68 }
  69 static void waiting_keys_process_in_current_layer(void)
  70 {
  71     // TODO: in case of including layer key in waiting keys
  72     for (uint8_t i = 0; i < waiting_keys_head; i++) {
  73         debug("waiting_keys_process_in_current_layer["); debug_dec(i); debug("]\n");
  74         process(waiting_keys[i].event);
  75     }
  76     waiting_keys_clear();
  77 }
  78
  79
  80 void action_exec(keyevent_t event)
  81 {
  82     if (!IS_NOEVENT(event)) {
  83         debug("event: "); debug_hex16(event.key.raw);
  84         debug("[");
  85         if (event.pressed) debug("down"); else debug("up");
  86         debug("]\n");
  87     }
  88     if (IS_TAPPING) {
  89         /* when tap time elapses or waiting key is released */
  90         if ((timer_elapsed(tapping_key.event.time) > TAP_TIME) ||
  91             (!event.pressed && waiting_keys_has(event.key))) {
  92
  93             // TODO process tapping_key: layer swich, modifier, ...
  94             // action is needed?
  95             debug("notap: process tapping_key.\n");
  96             process(tapping_key.event);
  97
  98             /* Process waiting keys in new layer */
  99             waiting_keys_process_in_current_layer();
 100         }
 101         /* when tapping key is released within tap time */
 102         else if (!event.pressed && KEYEQ(event.key, tapping_key.event.key)) {
 103             /* tap key down */
 104             debug("tap("); debug_hex8(tap_count); debug(")[tapping_key](register): "); debug_hex8(tapping_key.action.layer.code);  debug("\n");
 105             register_code(tapping_key.action.layer.code);
 106             tapping_key = (keyrecord_t){};
 107
 108             /* process waiting keys */
 109             waiting_keys_process_in_current_layer();
 110         }
 111     }
 112
 113     // not real event. event just to handle time out of tapping key.
 114     if (IS_NOEVENT(event)) {
 115         return;
 116     }
 117
 118     /* count up tap when key is up */
 119     // key: d u d u d
 120     // tap: 0 1 1 2 2
 121     // key: u d u d u
 122     // tap: 0 0 1 1 2
 123     if (KEYEQ(event.key, last_event.key) && timer_elapsed(last_event.time) <= TAP_TIME) {
 124         if (!event.pressed) tap_count++;
 125     } else {
 126         tap_count = 0;
 127     }
 128
 129     /* store key events while tapping */
 130     if (IS_TAPPING) {
 131         // TODO: action is needed?
 132         waiting_keys_enqueue(event);
 133     } else {
 134         process(event);
 135     }
 136
 137     /* last event */
 138     last_event = event;
 139 }
 140
 141
 142 static void process(keyevent_t event)
 143 {
 144     action_t action = keymap_get_action(current_layer, event.key.pos.row, event.key.pos.col);
 145     debug("action: "); debug_hex16(action.code);
 146     if (event.pressed) debug("[down]\n"); else debug("[up]\n");
 147
 148     switch (action.kind.id) {
 149         /* Key and Mods */
 150         case ACT_LMODS:
 151             //               |pressed                          |released
 152             // --------------+---------------------------------+------------
 153             // key           |down(key)                        |up(key)
 154             // mods          |add(mods)                        |del(mods)
 155             // key with mods |add(mods), down(key), unset(mods)|up(key)
 156             if (event.pressed) {
 157                 uint8_t tmp_mods = host_get_mods();
 158                 if (action.key.mods) {
 159                     host_add_mods(action.key.mods);
 160                     host_send_keyboard_report();
 161                 }
 162                 register_code(action.key.code);
 163                 if (action.key.mods && action.key.code) {
 164                     host_set_mods(tmp_mods);
 165                     host_send_keyboard_report();
 166                 }
 167             } else {
 168                 if (action.key.mods && !action.key.code) {
 169                     host_del_mods(action.key.mods);
 170                     host_send_keyboard_report();
 171                 }
 172                 unregister_code(action.key.code);
 173             }
 174             break;
 175         case ACT_RMODS:
 176             //               |pressed                          |released
 177             // --------------+---------------------------------+------------
 178             // key           |down(key)                        |up(key)
 179             // mods          |add(mods)                        |del(mods)
 180             // key with mods |add(mods), down(key), unset(mods)|up(key)
 181             if (event.pressed) {
 182                 uint8_t tmp_mods = host_get_mods();
 183                 if (action.key.mods) {
 184                     host_add_mods(action.key.mods<<4);
 185                     host_send_keyboard_report();
 186                 }
 187                 register_code(action.key.code);
 188                 if (action.key.mods && action.key.code) {
 189                     host_set_mods(tmp_mods);
 190                     host_send_keyboard_report();
 191                 }
 192             } else {
 193                 if (action.key.mods && !action.key.code) {
 194                     host_del_mods(action.key.mods<<4);
 195                     host_send_keyboard_report();
 196                 }
 197                 unregister_code(action.key.code);
 198             }
 199             break;
 200         case ACT_LMODS_TAP:
 201             if (event.pressed) {
 202                 if (tap_count == 0) {
 203                     if (host_has_anykey()) {
 204                         // This key is a modifier essentially.
 205                         // Prioritize mods when key jam or rollover
 206                         add_mods(action.key.mods);
 207                     } else {
 208                         if (IS_TAPPING && KEYEQ(tapping_key.event.key, event.key)) {
 209                             // no tapping
 210                             add_mods(action.key.mods);
 211                             tapping_key = (keyrecord_t){};
 212                         } else {
 213                             debug("tapping lmods("); debug_hex8(action.key.mods); debug(")\n");
 214                             tapping_key = (keyrecord_t){
 215                                 .event = event,
 216                                 .action = action,
 217                                 .mods = host_get_mods()
 218                             };
 219                         }
 220                     }
 221                 } else {
 222                     // pressed after tapping
 223                     debug("tap("); debug_hex(tap_count); debug(")[lmods](register): "); debug_hex8(action.key.code); debug("\n");
 224                     register_code(action.key.code);
 225                 }
 226             } else {
 227                 if (tap_count == 0) {
 228                     debug("tap(00)[lmods](del_mods): "); debug_hex8(action.key.mods); debug("\n");
 229                     del_mods(action.key.mods);
 230                 } else if (tap_count == 1) {
 231                     debug("tap(01)[lmods](del_mods/unregister): "); debug_hex8(action.key.mods); debug(" "); debug_hex8(action.key.code); debug("\n");
 232                     del_mods(action.key.mods);
 233                     unregister_code(action.key.code);
 234                 } else {
 235                     debug("tap("); debug_hex(tap_count); debug(")[lmods](unregister): "); debug_hex8(action.key.code); debug("\n");
 236                     unregister_code(action.key.code);
 237                 }
 238             }
 239             break;
 240         case ACT_RMODS_TAP:
 241             if (event.pressed) {
 242                 if (tap_count == 0) {
 243                     if (host_has_anykey()) {
 244                         // This key is a modifier essentially.
 245                         // Prioritize mods when key jam or rollover
 246                         add_mods(action.key.mods<<4);
 247                     } else {
 248                         if (IS_TAPPING && KEYEQ(tapping_key.event.key, event.key)) {
 249                             // no tapping
 250                             add_mods(action.key.mods<<4);
 251                             tapping_key = (keyrecord_t){};
 252                         } else {
 253                             debug("tapping rmods("); debug_hex8(action.key.mods); debug(")\n");
 254                             tapping_key = (keyrecord_t){
 255                                 .event = event,
 256                                 .action = action,
 257                                 .mods = host_get_mods()
 258                             };
 259                         }
 260                     }
 261                 } else {
 262                     // pressed after tapping
 263                     debug("tap("); debug_hex(tap_count); debug(")[rmods](register): "); debug_hex8(action.key.code); debug("\n");
 264                     register_code(action.key.code);
 265                 }
 266             } else {
 267                 if (tap_count == 0) {
 268                     debug("tap(00)[rmods](del_mods): "); debug_hex8(action.key.mods); debug("\n");
 269                     del_mods(action.key.mods<<4);
 270                 } else if (tap_count == 1) {
 271                     debug("tap(01)[rmods](del_mods/unregister): "); debug_hex8(action.key.mods); debug(" "); debug_hex8(action.key.code); debug("\n");
 272                     del_mods(action.key.mods<<4);
 273                     unregister_code(action.key.code);
 274                 } else {
 275                     debug("tap("); debug_hex(tap_count); debug(")[rmods](unregister): "); debug_hex8(action.key.code); debug("\n");
 276                     unregister_code(action.key.code);
 277                 }
 278             }
 279             break;
 280
 281         /* other HID usage */
 282         case ACT_USAGE:
 283 #ifdef EXTRAKEY_ENABLE
 284             switch (action.usage.page) {
 285                 case ACTION_USAGE_PAGE_SYSTEM:
 286                     if (event.pressed) {
 287                         host_system_send(action.usage.code);
 288                     } else {
 289                         host_system_send(0);
 290                     }
 291                     break;
 292                 case ACTION_USAGE_PAGE_CONSUMER:
 293                     if (event.pressed) {
 294                         host_consumer_send(action.usage.code);
 295                     } else {
 296                         host_consumer_send(0);
 297                     }
 298                     break;
 299             }
 300 #endif
 301             break;
 302
 303         /* Mouse key */
 304         case ACT_MOUSEKEY:
 305 #ifdef MOUSEKEY_ENABLE
 306             if (event.pressed) {
 307                 mousekey_on(action.key.code);
 308                 mousekey_send();
 309             } else {
 310                 mousekey_off(action.key.code);
 311                 mousekey_send();
 312             }
 313 #endif
 314             break;
 315
 316         /* Layer key */
 317         case ACT_LAYER_PRESSED:
 318             // layer action when pressed
 319             switch (action.layer.code) {
 320                 case 0x00:
 321                     if (event.pressed) {
 322                         layer_switch(action.layer.opt);
 323                     }
 324                     break;
 325                 case 0xF0:
 326                     // TODO: tap toggle
 327                     break;
 328                 case 0xFF:
 329                     if (event.pressed) {
 330                         default_layer = action.layer.opt;
 331                         layer_switch(default_layer);
 332                     }
 333                     break;
 334                 default:
 335                     // with tap key
 336                     if (event.pressed) {
 337                         if (tap_count == 0) {
 338                             if (host_has_anykey()) {
 339                                 // This key is a normal key than a leyar key essentially.
 340                                 // Prioritize 'tap key' when key jam or rollover
 341                                 register_code(action.layer.code);
 342                             } else {
 343                                 if (IS_TAPPING && KEYEQ(tapping_key.event.key, event.key)) {
 344                                     layer_switch(action.layer.opt);
 345                                     tapping_key = (keyrecord_t){};
 346                                 } else {
 347                                     debug("tapping layer("); debug_hex8(action.layer.opt); debug(")\n");
 348                                     tapping_key = (keyrecord_t){
 349                                         .event = event,
 350                                         .action = action,
 351                                         .mods = host_get_mods()
 352                                     };
 353                                 }
 354                             }
 355                         } else if (tap_count > 0) {
 356                             // pressed after tapping
 357                             debug("tap[layer](register): "); debug_hex(tap_count); debug("\n");
 358                             register_code(action.layer.code);
 359                         }
 360                     } else {
 361                         // released after tapping
 362                         debug("tap[layer](unregister): "); debug_hex(tap_count); debug("\n");
 363                         unregister_code(action.layer.code);
 364                     }
 365                     break;
 366             }
 367             break;
 368         case ACT_LAYER_RELEASED:
 369             switch (action.layer.code) {
 370                 case 0x00:
 371                     if (!event.pressed) {
 372                         layer_switch(action.layer.opt);
 373                     }
 374                     break;
 375                 case 0xF0:
 376                     // Ignored. LAYER_RELEASED with tap toggle is invalid action.
 377                     break;
 378                 case 0xFF:
 379                     if (!event.pressed) {
 380                         default_layer = action.layer.opt;
 381                         layer_switch(default_layer);
 382                     }
 383                     break;
 384                 default:
 385                     // Ignored. LAYER_RELEASED with tap key is invalid action.
 386                     break;
 387             }
 388             break;
 389         case ACT_LAYER_BIT:
 390             switch (action.layer.code) {
 391                 case 0x00:
 392                     if (event.pressed) {
 393                         layer_switch(current_layer | action.layer.opt);
 394                     } else {
 395                         layer_switch(current_layer & ~action.layer.opt);
 396                     }
 397                     break;
 398                 case 0xF0:
 399                     // TODO: tap toggle
 400                     break;
 401                 case 0xFF:
 402                     // change default layer
 403                     if (event.pressed) {
 404                         default_layer = current_layer | action.layer.opt;
 405                         layer_switch(default_layer);
 406                     } else {
 407                         default_layer = current_layer & ~action.layer.opt;
 408                         layer_switch(default_layer);
 409                     }
 410                     break;
 411                 default:
 412                     // TODO: see ACT_LAYER_PRESSED code
 413                     // with tap key
 414                     if (event.pressed) {
 415                         if (tap_count == 0) {
 416                             if (host_has_anykey()) {
 417                                 register_code(action.layer.code);
 418                             } else {
 419                                 tapping_key = (keyrecord_t){
 420                                     .event = event,
 421                                     .action = action,
 422                                     .mods = keyboard_report->mods
 423                                 };
 424                             }
 425                         } else if (tap_count > 0) {
 426                             debug("tap[layer_bit](register): "); debug_hex(tap_count); debug("\n");
 427                             register_code(action.layer.code);
 428                         }
 429                     } else {
 430                         if (tap_count == 0) {
 431                             // no tap
 432                             layer_switch(current_layer & ~action.layer.opt);
 433                         } else if (tap_count == 1) {
 434                             // tap
 435                             register_code(action.layer.code);
 436                         }
 437                         unregister_code(action.layer.code);
 438                     }
 439                     break;
 440             }
 441         case ACT_LAYER_EXT:
 442             switch (action.layer.opt) {
 443                 case 0x00:
 444                     // set default layer when pressed
 445                     switch (action.layer.code) {
 446                         case 0x00:
 447                             if (event.pressed) {
 448                                 layer_switch(default_layer);
 449                             }
 450                             break;
 451                         case 0xF0:
 452                             // TODO: tap toggle
 453                             break;
 454                         case 0xFF:
 455                             if (event.pressed) {
 456                                 default_layer = current_layer;
 457                                 layer_switch(default_layer);
 458                             }
 459                             break;
 460                         default:
 461                             // TODO: tap key
 462                             break;
 463                     }
 464                     break;
 465                 case 0x01:
 466                     // set default layer when released
 467                     switch (action.layer.code) {
 468                         case 0x00:
 469                             if (!event.pressed) {
 470                                 layer_switch(default_layer);
 471                             }
 472                             break;
 473                         case 0xFF:
 474                             if (!event.pressed) {
 475                                 default_layer = current_layer;
 476                                 layer_switch(default_layer);
 477                             }
 478                             break;
 479                         case 0xF0:
 480                         default:
 481                             // Ignore tap.
 482                             if (!event.pressed) {
 483                                 layer_switch(default_layer);
 484                             }
 485                             break;
 486                     }
 487                     break;
 488             }
 489             break;
 490
 491         /* Extentions */
 492         case ACT_MACRO:
 493         case ACT_COMMAND:
 494         case ACT_FUNCTION:
 495         default:
 496             break;
 497     }
 498 }
 499
 500 static void register_code(uint8_t code)
 501 {
 502     if (code == KC_NO) {
 503         return;
 504     }
 505     else if IS_KEY(code) {
 506         // TODO: should push command_proc out of this block?
 507         if (!command_proc(code)) {
 508             host_add_key(code);
 509             host_send_keyboard_report();
 510         }
 511     }
 512     else if IS_MOD(code) {
 513         host_add_mods(MOD_BIT(code));
 514         host_send_keyboard_report();
 515     }
 516 }
 517
 518 static void unregister_code(uint8_t code)
 519 {
 520     if IS_KEY(code) {
 521         host_del_key(code);
 522         host_send_keyboard_report();
 523     }
 524     else if IS_MOD(code) {
 525         host_del_mods(MOD_BIT(code));
 526         host_send_keyboard_report();
 527     }
 528 }
 529
 530 static void add_mods(uint8_t mods)
 531 {
 532     if (mods) {
 533         host_add_mods(mods);
 534         host_send_keyboard_report();
 535     }
 536 }
 537
 538 static void del_mods(uint8_t mods)
 539 {
 540     if (mods) {
 541         host_del_mods(mods);
 542         host_send_keyboard_report();
 543     }
 544 }
 545
 546 static void set_mods(uint8_t mods)
 547 {
 548     host_set_mods(mods);
 549     host_send_keyboard_report();
 550 }
 551
 552 static void clear_keyboard(void)
 553 {
 554     host_clear_mods();
 555     clear_keyboard_but_mods();
 556 }
 557
 558 static void clear_keyboard_but_mods(void)
 559 {
 560     host_clear_keys();
 561     host_send_keyboard_report();
 562 #ifdef MOUSEKEY_ENABLE
 563     mousekey_clear();
 564     mousekey_send();
 565 #endif
 566 #ifdef EXTRAKEY_ENABLE
 567     host_system_send(0);
 568     host_consumer_send(0);
 569 #endif
 570 }
 571
 572 static bool sending_anykey(void)
 573 {
 574     return (host_has_anykey() || host_mouse_in_use() ||
 575             host_last_sysytem_report() || host_last_consumer_report());
 576 }
 577
 578 static void layer_switch(uint8_t new_layer)
 579 {
 580     if (current_layer != new_layer) {
 581         debug("Layer Switch: "); debug_hex(current_layer);
 582         debug(" -> "); debug_hex(new_layer); debug("\n");
 583
 584         current_layer = new_layer;
 585         clear_keyboard_but_mods(); // To avoid stuck keys
 586         // TODO: update mods with full scan of matrix? if modifier changes between layers
 587     }
 588 }