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-rw-r--r--quantum/process_keycode/process_combo.c239
1 files changed, 131 insertions, 108 deletions
diff --git a/quantum/process_keycode/process_combo.c b/quantum/process_keycode/process_combo.c
index 13f8bbb33..a157ed48b 100644
--- a/quantum/process_keycode/process_combo.c
+++ b/quantum/process_keycode/process_combo.c
@@ -14,141 +14,164 @@
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
-#include "process_combo.h"
#include "print.h"
+#include "process_combo.h"
-
-__attribute__ ((weak))
-combo_t key_combos[COMBO_COUNT] = {
+__attribute__((weak)) combo_t key_combos[COMBO_COUNT] = {
};
-__attribute__ ((weak))
-void process_combo_event(uint8_t combo_index, bool pressed) {
-
-}
+__attribute__((weak)) void process_combo_event(uint8_t combo_index,
+ bool pressed) {}
+static uint16_t timer = 0;
static uint8_t current_combo_index = 0;
+static bool drop_buffer = false;
+static bool is_active = false;
-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->is_active;
-
- 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->is_active = false;
- } else { /* Combo key was pressed */
- combo->timer = timer_read();
- combo->is_active = true;
+static uint8_t buffer_size = 0;
#ifdef COMBO_ALLOW_ACTION_KEYS
- combo->prev_record = *record;
+static keyrecord_t key_buffer[MAX_COMBO_LENGTH];
#else
- combo->prev_key = keycode;
+static uint16_t key_buffer[MAX_COMBO_LENGTH];
#endif
- }
- }
+
+static inline void send_combo(uint16_t action, bool pressed) {
+ if (action) {
+ if (pressed) {
+ register_code16(action);
} else {
- if (ALL_COMBO_KEYS_ARE_DOWN) { /* Combo was released */
- send_combo(combo->keycode, false);
- }
+ unregister_code16(action);
+ }
+ } else {
+ process_combo_event(current_combo_index, pressed);
+ }
+}
- if (is_combo_active) { /* Combo key was tapped */
+static inline void dump_key_buffer(bool emit) {
+ if (buffer_size == 0) {
+ return;
+ }
+
+ if (emit) {
+ for (uint8_t i = 0; i < buffer_size; i++) {
#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));
+ const action_t action = store_or_get_action(key_buffer[i].event.pressed,
+ key_buffer[i].event.key);
+ process_action(&(key_buffer[i]), action);
#else
- register_code16(keycode);
- send_keyboard_report();
- unregister_code16(keycode);
+ register_code16(key_buffer[i]);
+ send_keyboard_report();
#endif
- combo->is_active = false;
- combo->timer = 0;
- }
-
- KEY_STATE_UP(index);
}
+ }
- if (NO_COMBO_KEYS_ARE_DOWN) {
- combo->is_active = true;
- combo->timer = 0;
- }
-
- return is_combo_active;
+ buffer_size = 0;
}
-bool process_combo(uint16_t keycode, keyrecord_t *record)
-{
- bool is_combo_key = false;
+#define ALL_COMBO_KEYS_ARE_DOWN (((1 << count) - 1) == 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;
+ }
+
+ /* Continue processing if not a combo key */
+ if (-1 == (int8_t)index)
+ return false;
+
+ bool is_combo_active = is_active;
+
+ 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);
+ drop_buffer = true;
+ }
+ }
+ } else {
+ if (ALL_COMBO_KEYS_ARE_DOWN) { /* Combo was released */
+ send_combo(combo->keycode, false);
+ } else {
+ /* continue processing without immediately returning */
+ is_combo_active = 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);
- }
+ KEY_STATE_UP(index);
+ }
- return !is_combo_key;
+ return is_combo_active;
}
-void matrix_scan_combo(void)
-{
- for (int i = 0; i < COMBO_COUNT; ++i) {
- // Do not treat the (weak) key_combos too strict.
- #pragma GCC diagnostic push
- #pragma GCC diagnostic ignored "-Warray-bounds"
- combo_t *combo = &key_combos[i];
- #pragma GCC diagnostic pop
- if (combo->is_active &&
- combo->timer &&
- 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->is_active = false;
+#define NO_COMBO_KEYS_ARE_DOWN (0 == combo->state)
+
+bool process_combo(uint16_t keycode, keyrecord_t *record) {
+ bool is_combo_key = false;
+ drop_buffer = false;
+ bool no_combo_keys_pressed = 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);
+ no_combo_keys_pressed |= NO_COMBO_KEYS_ARE_DOWN;
+ }
+
+ if (drop_buffer) {
+ /* buffer is only dropped when we complete a combo, so we refresh the timer
+ * here */
+ timer = timer_read();
+ dump_key_buffer(false);
+ } else if (!is_combo_key) {
+ /* if no combos claim the key we need to emit the keybuffer */
+ dump_key_buffer(true);
+
+ // reset state if there are no combo keys pressed at all
+ if (no_combo_keys_pressed) {
+ timer = 0;
+ is_active = true;
+ }
+ } else if (record->event.pressed && is_active) {
+ /* otherwise the key is consumed and placed in the buffer */
+ timer = timer_read();
+ if (buffer_size < MAX_COMBO_LENGTH) {
#ifdef COMBO_ALLOW_ACTION_KEYS
- process_action(&combo->prev_record,
- store_or_get_action(combo->prev_record.event.pressed,
- combo->prev_record.event.key));
+ key_buffer[buffer_size++] = *record;
#else
- unregister_code16(combo->prev_key);
- register_code16(combo->prev_key);
+ key_buffer[buffer_size++] = keycode;
#endif
- }
}
+ }
+
+ return !is_combo_key;
+}
+
+void matrix_scan_combo(void) {
+ if (is_active && timer && timer_elapsed(timer) > COMBO_TERM) {
+
+ /* This disables the combo, meaning key events for this
+ * combo will be handled by the next processors in the chain
+ */
+ is_active = false;
+ dump_key_buffer(true);
+ }
}
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