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
  14
  15 static void process(keyevent_t event, action_t action);
  16 static void register_code(uint8_t code);
  17 static void unregister_code(uint8_t code);
  18 static void clear_keyboard(void);
  19 static void clear_keyboard_but_mods(void);
  20 static bool sending_anykey(void);
  21 static void layer_switch(uint8_t new_layer);
  22
  23
  24 /* tap */
  25 #define TAP_TIME    200
  26 static keyevent_t last_event = {};
  27 static uint16_t last_event_time = 0;
  28 static uint8_t tap_count = 0;
  29
  30 /* layer */
  31 uint8_t default_layer = 0;
  32 uint8_t current_layer = 0;
  33 keyrecord_t delaying_layer = {};
  34
  35 #define WAITING_KEYS_BUFFER 3
  36 static keyrecord_t waiting_keys[WAITING_KEYS_BUFFER] = {};
  37 static uint8_t waiting_keys_head = 0;
  38 static bool waiting_keys_enqueue(keyevent_t event, action_t action)
  39 {
  40     debug("waiting_keys["); debug_dec(waiting_keys_head); debug("] = ");
  41     debug_hex16(action.code); debug("\n");
  42     if (waiting_keys_head < WAITING_KEYS_BUFFER) {
  43         waiting_keys[waiting_keys_head++] = (keyrecord_t){ .event = event,
  44                                                            .action = action,
  45                                                            .mods = host_get_mods() };
  46     } else {
  47         return true;
  48     }
  49 }
  50 static void waiting_keys_clear(void)
  51 {
  52     waiting_keys_head = 0;
  53 }
  54 static bool waiting_keys_has(keypos_t key)
  55 {
  56     for (uint8_t i = 0; i < waiting_keys_head; i++) {
  57         if KEYEQ(key, waiting_keys[i].event.key) return true;
  58     }
  59     return false;
  60 }
  61 static void waiting_keys_process_in_current_layer(void)
  62 {
  63     // TODO: in case of including layer key in waiting keys
  64     uint8_t tmp_mods = host_get_mods();
  65     for (uint8_t i = 0; i < waiting_keys_head; i++) {
  66         /* revive status of mods */
  67         host_set_mods(waiting_keys[i].mods);
  68         process(waiting_keys[i].event, keymap_get_action(current_layer,
  69                                                          waiting_keys[i].event.key.row,
  70                                                          waiting_keys[i].event.key.col));
  71         debug("waiting_keys_process_in_current_layer["); debug_dec(i); debug("]\n");
  72     }
  73     host_set_mods(tmp_mods);
  74     waiting_keys_clear();
  75 }
  76
  77
  78 static void process(keyevent_t event, action_t action)
  79 {
  80     //action_t action = keymap_get_action(current_layer, event.key.row, event.key.col);
  81     debug("action: "); debug_hex16(action.code); debug("\n");
  82
  83
  84     switch (action.kind.id) {
  85         /* Key and Mods */
  86         case ACT_LMODS:
  87             // normal key or key plus mods
  88             if (event.pressed) {
  89                 uint8_t tmp_mods = host_get_mods();
  90                 if (action.key.mods) {
  91                     host_add_mods(action.key.mods);
  92                     host_send_keyboard_report();
  93                 }
  94                 register_code(action.key.code);
  95                 if (action.key.mods && action.key.code) {
  96                     host_set_mods(tmp_mods);
  97                     host_send_keyboard_report();
  98                 }
  99             } else {
 100                 if (action.key.mods && !action.key.code) {
 101                     host_del_mods(action.key.mods);
 102                     host_send_keyboard_report();
 103                 }
 104                 unregister_code(action.key.code);
 105             }
 106             break;
 107         case ACT_RMODS:
 108             if (event.pressed) {
 109                 uint8_t tmp_mods = host_get_mods();
 110                 if (action.key.mods) {
 111                     host_add_mods(action.key.mods<<4);
 112                     host_send_keyboard_report();
 113                 }
 114                 register_code(action.key.code);
 115                 if (action.key.mods && action.key.code) {
 116                     host_set_mods(tmp_mods);
 117                     host_send_keyboard_report();
 118                 }
 119             } else {
 120                 if (action.key.mods && !action.key.code) {
 121                     host_del_mods(action.key.mods<<4);
 122                     host_send_keyboard_report();
 123                 }
 124                 unregister_code(action.key.code);
 125             }
 126             break;
 127         case ACT_LMOD_TAP:
 128             break;
 129         case ACT_RMOD_TAP:
 130             break;
 131
 132         /* other HID usage */
 133         case ACT_USAGE:
 134 #ifdef EXTRAKEY_ENABLE
 135             switch (action.usage.page) {
 136                 case ACTION_USAGE_PAGE_SYSTEM:
 137                     if (event.pressed) {
 138                         host_system_send(action.usage.code);
 139                     } else {
 140                         host_system_send(0);
 141                     }
 142                     break;
 143                 case ACTION_USAGE_PAGE_CONSUMER:
 144                     if (event.pressed) {
 145                         host_consumer_send(action.usage.code);
 146                     } else {
 147                         host_consumer_send(0);
 148                     }
 149                     break;
 150             }
 151 #endif
 152             break;
 153
 154         /* Mouse key */
 155         case ACT_MOUSEKEY:
 156 #ifdef MOUSEKEY_ENABLE
 157             if (event.pressed) {
 158                 mousekey_on(action.key.code);
 159                 mousekey_send();
 160             } else {
 161                 mousekey_off(action.key.code);
 162                 mousekey_send();
 163             }
 164 #endif
 165             break;
 166
 167         /* Layer key */
 168         case ACT_LAYER_PRESSED:
 169             // layer action when pressed
 170             switch (action.layer.code) {
 171                 case 0x00:
 172                     if (event.pressed) {
 173                         layer_switch(action.layer.opt);
 174                     }
 175                     break;
 176                 case 0xF0:
 177                     // TODO: tap toggle
 178                     break;
 179                 case 0xFF:
 180                     if (event.pressed) {
 181                         default_layer = action.layer.opt;
 182                         layer_switch(default_layer);
 183                     }
 184                     break;
 185                 default:
 186                     // with tap key
 187                     if (event.pressed) {
 188                         if (tap_count == 0) {
 189                             if (host_has_anykey()) {
 190                                 register_code(action.layer.code);
 191                             } else {
 192                                 debug("Delay switching layer("); debug_hex8(action.layer.opt); debug(")\n");
 193                                 delaying_layer = (keyrecord_t){
 194                                     .event = event,
 195                                     .action = action,
 196                                     .mods = host_get_mods()
 197                                 };
 198                             }
 199                         } else if (tap_count > 0) {
 200                             debug("tap: "); debug_hex(tap_count); debug("\n");
 201                             register_code(action.layer.code);
 202                         }
 203                     } else {
 204                         // tap key
 205                         if (KEYEQ(event.key, delaying_layer.event.key) &&
 206                                 timer_elapsed(delaying_layer.event.time) <= TAP_TIME) {
 207                             uint8_t tmp_mods = host_get_mods();
 208                             host_set_mods(delaying_layer.mods);
 209                             register_code(delaying_layer.action.layer.code);
 210                             host_set_mods(tmp_mods);
 211                             unregister_code(delaying_layer.action.layer.code);
 212                         } else {
 213                             unregister_code(action.layer.code);
 214                         }
 215                         delaying_layer = (keyrecord_t){};
 216                     }
 217                     break;
 218             }
 219             break;
 220         case ACT_LAYER_RELEASED:
 221             switch (action.layer.code) {
 222                 case 0x00:
 223                     if (event.pressed) {
 224                         layer_switch(action.layer.opt);
 225                     }
 226                     break;
 227                 case 0xF0:
 228                     // Ignored. LAYER_RELEASED with tap toggle is invalid action.
 229                     break;
 230                 case 0xFF:
 231                     if (!event.pressed) {
 232                         default_layer = action.layer.opt;
 233                         layer_switch(default_layer);
 234                     }
 235                     break;
 236                 default:
 237                     // Ignored. LAYER_RELEASED with tap key is invalid action.
 238                     break;
 239             }
 240             break;
 241         case ACT_LAYER_BIT:
 242             switch (action.layer.code) {
 243                 case 0x00:
 244                     if (event.pressed) {
 245                         layer_switch(current_layer | action.layer.opt);
 246                     } else {
 247                         layer_switch(current_layer & ~action.layer.opt);
 248                     }
 249                     break;
 250                 case 0xF0:
 251                     // TODO: tap toggle
 252                     break;
 253                 case 0xFF:
 254                     // change default layer
 255                     if (event.pressed) {
 256                         default_layer = current_layer | action.layer.opt;
 257                         layer_switch(default_layer);
 258                     } else {
 259                         default_layer = current_layer & ~action.layer.opt;
 260                         layer_switch(default_layer);
 261                     }
 262                     break;
 263                 default:
 264                     // with tap key
 265                     if (event.pressed) {
 266                         if (tap_count == 0) {
 267                             if (host_has_anykey()) {
 268                                 register_code(action.layer.code);
 269                             } else {
 270                                 delaying_layer = (keyrecord_t){
 271                                     .event = event,
 272                                     .action = action,
 273                                     .mods = keyboard_report->mods
 274                                 };
 275                             }
 276                         } else if (tap_count > 0) {
 277                             debug("tap: "); debug_hex(tap_count); debug("\n");
 278                             register_code(action.layer.code);
 279                         }
 280                     } else {
 281                         if (tap_count == 0) {
 282                             // no tap
 283                             layer_switch(current_layer & ~action.layer.opt);
 284                         } else if (tap_count == 1) {
 285                             // tap
 286                             register_code(action.layer.code);
 287                         }
 288                         unregister_code(action.layer.code);
 289                     }
 290                     break;
 291             }
 292         case ACT_LAYER_EXT:
 293             switch (action.layer.opt) {
 294                 case 0x00:
 295                     // set default layer when pressed
 296                     switch (action.layer.code) {
 297                         case 0x00:
 298                             if (event.pressed) {
 299                                 layer_switch(default_layer);
 300                             }
 301                             break;
 302                         case 0xF0:
 303                             // TODO: tap toggle
 304                             break;
 305                         case 0xFF:
 306                             if (event.pressed) {
 307                                 default_layer = current_layer;
 308                                 layer_switch(default_layer);
 309                             }
 310                             break;
 311                         default:
 312                             // TODO: tap key
 313                             break;
 314                     }
 315                     break;
 316                 case 0x01:
 317                     // set default layer when released
 318                     switch (action.layer.code) {
 319                         case 0x00:
 320                             if (!event.pressed) {
 321                                 layer_switch(default_layer);
 322                             }
 323                             break;
 324                         case 0xFF:
 325                             if (!event.pressed) {
 326                                 default_layer = current_layer;
 327                                 layer_switch(default_layer);
 328                             }
 329                             break;
 330                         case 0xF0:
 331                         default:
 332                             // Ignore tap.
 333                             if (!event.pressed) {
 334                                 layer_switch(default_layer);
 335                             }
 336                             break;
 337                     }
 338                     break;
 339             }
 340             break;
 341
 342         /* Extentions */
 343         case ACT_MACRO:
 344         case ACT_COMMAND:
 345         case ACT_FUNCTION:
 346         default:
 347             break;
 348     }
 349 }
 350
 351 void action_exec(keyevent_t event)
 352 {
 353 /*
 354     debug("key["); debug_hex8(event.key.row); debug(":"); debug_hex8(event.key.col);
 355     if (event.pressed) debug("]down\n"); else debug("]up\n");
 356 */
 357
 358     /* When delaying layer switch */
 359     if (delaying_layer.action.code) {
 360         /* Layer switch when tap time elapses or waiting key is released */
 361         if ((timer_elapsed(delaying_layer.event.time) > TAP_TIME) ||
 362             (!event.pressed && waiting_keys_has(event.key))) {
 363             /* layer switch */
 364             switch (delaying_layer.action.kind.id) {
 365                 case ACT_LAYER_PRESSED:
 366                     layer_switch(delaying_layer.action.layer.opt);
 367                     break;
 368                 case ACT_LAYER_BIT:
 369                     layer_switch(current_layer | delaying_layer.action.layer.opt);
 370                     break;
 371             }
 372             delaying_layer = (keyrecord_t){};
 373
 374             /* Process waiting keys in new layer */
 375             waiting_keys_process_in_current_layer();
 376         }
 377         /* when delaying layer key is released within delay term */
 378         else if (!event.pressed && KEYEQ(event.key, delaying_layer.event.key)) {
 379             /* tap key down */
 380             uint8_t tmp_mods = host_get_mods();
 381             host_set_mods(delaying_layer.mods);
 382             register_code(delaying_layer.action.layer.code);
 383             delaying_layer = (keyrecord_t){};
 384             host_set_mods(tmp_mods);
 385
 386             /* process waiting keys */
 387             waiting_keys_process_in_current_layer();
 388         }
 389     }
 390
 391     // not real event. event just to update delaying layer.
 392     if (IS_NOEVENT(event)) {
 393         return;
 394     }
 395
 396     /* count tap when key is up */
 397     if (KEYEQ(event.key, last_event.key) && timer_elapsed(last_event.time) <= TAP_TIME) {
 398         if (!event.pressed) tap_count++;
 399     } else {
 400         tap_count = 0;
 401     }
 402
 403     action_t action = keymap_get_action(current_layer, event.key.row, event.key.col);
 404
 405     // TODO: all key events(pressed, released) should be recorded?
 406     /* postpone key-down events while delaying layer */
 407     if (delaying_layer.action.code) {
 408         if (event.pressed) {
 409             waiting_keys_enqueue(event, action);
 410         } else {
 411             process(event, action);
 412         }
 413     } else {
 414         process(event, action);
 415     }
 416
 417     /* last event */
 418     last_event = event;
 419 }
 420
 421
 422 static void register_code(uint8_t code)
 423 {
 424     if (code == KC_NO) {
 425         return;
 426     }
 427     else if IS_KEY(code) {
 428         // TODO: should push command_proc out of this block?
 429         if (!command_proc(code)) {
 430             host_add_key(code);
 431             host_send_keyboard_report();
 432         }
 433     }
 434     else if IS_MOD(code) {
 435         host_add_mods(MOD_BIT(code));
 436         host_send_keyboard_report();
 437     }
 438 }
 439
 440 static void unregister_code(uint8_t code)
 441 {
 442     if IS_KEY(code) {
 443         host_del_key(code);
 444         host_send_keyboard_report();
 445     }
 446     else if IS_MOD(code) {
 447         host_del_mods(MOD_BIT(code));
 448         host_send_keyboard_report();
 449     }
 450 }
 451
 452 static void clear_keyboard(void)
 453 {
 454     host_clear_mods();
 455     clear_keyboard_but_mods();
 456 }
 457
 458 static void clear_keyboard_but_mods(void)
 459 {
 460     host_clear_keys();
 461     host_send_keyboard_report();
 462 #ifdef MOUSEKEY_ENABLE
 463     mousekey_clear();
 464     mousekey_send();
 465 #endif
 466 #ifdef EXTRAKEY_ENABLE
 467     host_system_send(0);
 468     host_consumer_send(0);
 469 #endif
 470 }
 471
 472 static bool sending_anykey(void)
 473 {
 474     return (host_has_anykey() || host_mouse_in_use() ||
 475             host_last_sysytem_report() || host_last_consumer_report());
 476 }
 477
 478 static void layer_switch(uint8_t new_layer)
 479 {
 480     if (current_layer != new_layer) {
 481         debug("Layer Switch: "); debug_hex(current_layer);
 482         debug(" -> "); debug_hex(new_layer); debug("\n");
 483
 484         current_layer = new_layer;
 485         clear_keyboard_but_mods(); // To avoid stuck keys
 486         // TODO: update mods with full scan of matrix? if modifier changes between layers
 487     }
 488 }