quantum/process_keycode/process_combo.c

   1 #include "process_combo.h"
   2 #include "print.h"
   3
   4 // __attribute__ ((weak))
   5 // combo_t key_combos[] = {
   6
   7 // };
   8
   9 #define SEND_KEY(key) \
  10 do { \
  11     register_code16(key); \
  12     send_keyboard_report(); \
  13     unregister_code16(key); \
  14 } while(0)
  15
  16
  17 #define ALL_COMBO_KEYS_ARE_DOWN (((1<<count)-1) == combo->state)
  18 static bool process_single_combo(combo_t *combo, uint16_t keycode, keyrecord_t *record)
  19 {
  20     uint8_t count = 0;
  21     bool is_combo_key = false;
  22     // bool combo_key_released = false;
  23
  24     // Count the number of combo keys
  25     for (const uint16_t *key = combo->keys; COMBO_END != pgm_read_word(key); ++key, ++count);
  26
  27     for (uint8_t i = 0; i < count; ++i) {
  28         uint16_t key = pgm_read_word(&combo->keys[i]);
  29
  30         if (key == keycode) {
  31             is_combo_key = true;
  32
  33             if (record->event.pressed) {
  34                 combo->state |= (1<<i);
  35             } else { // Combo key released
  36                 if (!combo->state) {
  37                     // The combo was sent, no need to send released key
  38                     return true;
  39                 }
  40
  41                 combo->state &= ~(1<<i);
  42                 SEND_KEY(key);
  43             }
  44         }
  45     }
  46
  47     if (ALL_COMBO_KEYS_ARE_DOWN) {
  48         SEND_KEY(combo->action);
  49         combo->state = 0;
  50     }
  51
  52     return is_combo_key;
  53 }
  54
  55
  56 bool process_combo(uint16_t keycode, keyrecord_t *record)
  57 {
  58     bool is_combo_key = false;
  59
  60     for (int i = 0; i < NUM_ELEMS(key_combos); ++i) {
  61         combo_t *combo = &key_combos[i];
  62         is_combo_key |= process_single_combo(combo, keycode, record);
  63     }
  64
  65     return !is_combo_key;
  66 }