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Diffstat (limited to 'quantum/process_keycode/process_combo.c')
| -rw-r--r-- | quantum/process_keycode/process_combo.c | 150 |
1 files changed, 150 insertions, 0 deletions
diff --git a/quantum/process_keycode/process_combo.c b/quantum/process_keycode/process_combo.c new file mode 100644 index 000000000..58d45add2 --- /dev/null +++ b/quantum/process_keycode/process_combo.c @@ -0,0 +1,150 @@ +/* Copyright 2016 Jack Humbert + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#include "process_combo.h" +#include "print.h" + + +#define COMBO_TIMER_ELAPSED -1 + + +__attribute__ ((weak)) +combo_t key_combos[] = { + +}; + +__attribute__ ((weak)) +void process_combo_event(uint8_t combo_index, bool pressed) { + +} + +static uint8_t current_combo_index = 0; + +static inline void send_combo(uint16_t action, bool pressed) +{ + if (action) { + if (pressed) { + register_code16(action); + } else { + unregister_code16(action); + } + } else { + process_combo_event(current_combo_index, pressed); + } +} + +#define ALL_COMBO_KEYS_ARE_DOWN (((1<<count)-1) == combo->state) +#define NO_COMBO_KEYS_ARE_DOWN (0 == combo->state) +#define KEY_STATE_DOWN(key) do{ combo->state |= (1<<key); } while(0) +#define KEY_STATE_UP(key) do{ combo->state &= ~(1<<key); } while(0) +static bool process_single_combo(combo_t *combo, uint16_t keycode, keyrecord_t *record) +{ + uint8_t count = 0; + uint8_t index = -1; + /* Find index of keycode and number of combo keys */ + for (const uint16_t *keys = combo->keys; ;++count) { + uint16_t key = pgm_read_word(&keys[count]); + if (keycode == key) index = count; + if (COMBO_END == key) break; + } + + /* Return if not a combo key */ + if (-1 == (int8_t)index) return false; + + /* The combos timer is used to signal whether the combo is active */ + bool is_combo_active = COMBO_TIMER_ELAPSED == combo->timer ? false : true; + + if (record->event.pressed) { + KEY_STATE_DOWN(index); + + if (is_combo_active) { + if (ALL_COMBO_KEYS_ARE_DOWN) { /* Combo was pressed */ + send_combo(combo->keycode, true); + combo->timer = COMBO_TIMER_ELAPSED; + } else { /* Combo key was pressed */ + combo->timer = timer_read(); +#ifdef COMBO_ALLOW_ACTION_KEYS + combo->prev_record = *record; +#else + combo->prev_key = keycode; +#endif + } + } + } else { + if (ALL_COMBO_KEYS_ARE_DOWN) { /* Combo was released */ + send_combo(combo->keycode, false); + } + + if (is_combo_active) { /* Combo key was tapped */ +#ifdef COMBO_ALLOW_ACTION_KEYS + record->event.pressed = true; + process_action(record, store_or_get_action(record->event.pressed, record->event.key)); + record->event.pressed = false; + process_action(record, store_or_get_action(record->event.pressed, record->event.key)); +#else + register_code16(keycode); + send_keyboard_report(); + unregister_code16(keycode); +#endif + combo->timer = 0; + } + + KEY_STATE_UP(index); + } + + if (NO_COMBO_KEYS_ARE_DOWN) { + combo->timer = 0; + } + + return is_combo_active; +} + +bool process_combo(uint16_t keycode, keyrecord_t *record) +{ + bool is_combo_key = false; + + for (current_combo_index = 0; current_combo_index < COMBO_COUNT; ++current_combo_index) { + combo_t *combo = &key_combos[current_combo_index]; + is_combo_key |= process_single_combo(combo, keycode, record); + } + + return !is_combo_key; +} + +void matrix_scan_combo(void) +{ + for (int i = 0; i < COMBO_COUNT; ++i) { + combo_t *combo = &key_combos[i]; + if (combo->timer && + combo->timer != COMBO_TIMER_ELAPSED && + timer_elapsed(combo->timer) > COMBO_TERM) { + + /* This disables the combo, meaning key events for this + * combo will be handled by the next processors in the chain + */ + combo->timer = COMBO_TIMER_ELAPSED; + +#ifdef COMBO_ALLOW_ACTION_KEYS + process_action(&combo->prev_record, + store_or_get_action(combo->prev_record.event.pressed, + combo->prev_record.event.key)); +#else + unregister_code16(combo->prev_key); + register_code16(combo->prev_key); +#endif + } + } +} |