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#include "process_combo.h" |
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#include "print.h" |
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#define COMBO_TIMER_ELAPSED -1 |
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__attribute__ ((weak)) |
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combo_t key_combos[] = { |
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}; |
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__attribute__ ((weak)) |
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void process_combo_event(uint8_t combo_index, bool pressed) { |
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} |
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static uint8_t current_combo_index = 0; |
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static inline void send_combo(uint16_t action, bool pressed) |
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{ |
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if (action) { |
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if (pressed) { |
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register_code16(action); |
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} else { |
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unregister_code16(action); |
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} |
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} else { |
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process_combo_event(current_combo_index, pressed); |
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} |
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} |
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#define ALL_COMBO_KEYS_ARE_DOWN (((1<<count)-1) == combo->state) |
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#define NO_COMBO_KEYS_ARE_DOWN (0 == combo->state) |
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#define KEY_STATE_DOWN(key) do{ combo->state |= (1<<key); } while(0) |
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#define KEY_STATE_UP(key) do{ combo->state &= ~(1<<key); } while(0) |
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static bool process_single_combo(combo_t *combo, uint16_t keycode, keyrecord_t *record) |
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{ |
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uint8_t count = 0; |
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uint8_t index = -1; |
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/* Find index of keycode and number of combo keys */ |
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for (const uint16_t *keys = combo->keys; ;++count) { |
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uint16_t key = pgm_read_word(&keys[count]); |
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if (keycode == key) index = count; |
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if (COMBO_END == key) break; |
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} |
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/* Return if not a combo key */ |
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if (-1 == (int8_t)index) return false; |
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/* The combos timer is used to signal whether the combo is active */ |
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bool is_combo_active = COMBO_TIMER_ELAPSED == combo->timer ? false : true; |
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if (record->event.pressed) { |
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KEY_STATE_DOWN(index); |
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if (is_combo_active) { |
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if (ALL_COMBO_KEYS_ARE_DOWN) { /* Combo was pressed */ |
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send_combo(combo->keycode, true); |
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combo->timer = COMBO_TIMER_ELAPSED; |
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} else { /* Combo key was pressed */ |
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combo->timer = timer_read(); |
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#ifdef COMBO_ALLOW_ACTION_KEYS |
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combo->prev_record = *record; |
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#else |
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combo->prev_key = keycode; |
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#endif |
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} |
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} |
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} else { |
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if (ALL_COMBO_KEYS_ARE_DOWN) { /* Combo was released */ |
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send_combo(combo->keycode, false); |
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} |
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if (is_combo_active) { /* Combo key was tapped */ |
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#ifdef COMBO_ALLOW_ACTION_KEYS |
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record->event.pressed = true; |
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process_action(record, store_or_get_action(record->event.pressed, record->event.key)); |
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record->event.pressed = false; |
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process_action(record, store_or_get_action(record->event.pressed, record->event.key)); |
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#else |
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register_code16(keycode); |
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send_keyboard_report(); |
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unregister_code16(keycode); |
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#endif |
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combo->timer = 0; |
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} |
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KEY_STATE_UP(index); |
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} |
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if (NO_COMBO_KEYS_ARE_DOWN) { |
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combo->timer = 0; |
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} |
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return is_combo_active; |
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} |
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bool process_combo(uint16_t keycode, keyrecord_t *record) |
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{ |
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bool is_combo_key = false; |
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for (current_combo_index = 0; current_combo_index < COMBO_COUNT; ++current_combo_index) { |
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combo_t *combo = &key_combos[current_combo_index]; |
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is_combo_key |= process_single_combo(combo, keycode, record); |
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} |
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return !is_combo_key; |
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} |
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void matrix_scan_combo(void) |
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{ |
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for (int i = 0; i < COMBO_COUNT; ++i) { |
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combo_t *combo = &key_combos[i]; |
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if (combo->timer && |
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combo->timer != COMBO_TIMER_ELAPSED && |
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timer_elapsed(combo->timer) > COMBO_TERM) { |
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/* This disables the combo, meaning key events for this |
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* combo will be handled by the next processors in the chain |
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*/ |
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combo->timer = COMBO_TIMER_ELAPSED; |
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#ifdef COMBO_ALLOW_ACTION_KEYS |
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process_action(&combo->prev_record, |
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store_or_get_action(combo->prev_record.event.pressed, |
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combo->prev_record.event.key)); |
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#else |
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unregister_code16(combo->prev_key); |
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register_code16(combo->prev_key); |
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#endif |
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} |
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} |
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} |