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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 @@
14 * along with this program. If not, see <http://www.gnu.org/licenses/>. 14 * along with this program. If not, see <http://www.gnu.org/licenses/>.
15 */ 15 */
16 16
17#include "process_combo.h"
18#include "print.h" 17#include "print.h"
18#include "process_combo.h"
19 19
20 20__attribute__((weak)) combo_t key_combos[COMBO_COUNT] = {
21__attribute__ ((weak))
22combo_t key_combos[COMBO_COUNT] = {
23 21
24}; 22};
25 23
26__attribute__ ((weak)) 24__attribute__((weak)) void process_combo_event(uint8_t combo_index,
27void process_combo_event(uint8_t combo_index, bool pressed) { 25 bool pressed) {}
28
29}
30 26
27static uint16_t timer = 0;
31static uint8_t current_combo_index = 0; 28static uint8_t current_combo_index = 0;
29static bool drop_buffer = false;
30static bool is_active = false;
32 31
33static inline void send_combo(uint16_t action, bool pressed) 32static uint8_t buffer_size = 0;
34{
35 if (action) {
36 if (pressed) {
37 register_code16(action);
38 } else {
39 unregister_code16(action);
40 }
41 } else {
42 process_combo_event(current_combo_index, pressed);
43 }
44}
45
46#define ALL_COMBO_KEYS_ARE_DOWN (((1<<count)-1) == combo->state)
47#define NO_COMBO_KEYS_ARE_DOWN (0 == combo->state)
48#define KEY_STATE_DOWN(key) do{ combo->state |= (1<<key); } while(0)
49#define KEY_STATE_UP(key) do{ combo->state &= ~(1<<key); } while(0)
50static bool process_single_combo(combo_t *combo, uint16_t keycode, keyrecord_t *record)
51{
52 uint8_t count = 0;
53 uint8_t index = -1;
54 /* Find index of keycode and number of combo keys */
55 for (const uint16_t *keys = combo->keys; ;++count) {
56 uint16_t key = pgm_read_word(&keys[count]);
57 if (keycode == key) index = count;
58 if (COMBO_END == key) break;
59 }
60
61 /* Return if not a combo key */
62 if (-1 == (int8_t)index) return false;
63
64 /* The combos timer is used to signal whether the combo is active */
65 bool is_combo_active = combo->is_active;
66
67 if (record->event.pressed) {
68 KEY_STATE_DOWN(index);
69
70 if (is_combo_active) {
71 if (ALL_COMBO_KEYS_ARE_DOWN) { /* Combo was pressed */
72 send_combo(combo->keycode, true);
73 combo->is_active = false;
74 } else { /* Combo key was pressed */
75 combo->timer = timer_read();
76 combo->is_active = true;
77#ifdef COMBO_ALLOW_ACTION_KEYS 33#ifdef COMBO_ALLOW_ACTION_KEYS
78 combo->prev_record = *record; 34static keyrecord_t key_buffer[MAX_COMBO_LENGTH];
79#else 35#else
80 combo->prev_key = keycode; 36static uint16_t key_buffer[MAX_COMBO_LENGTH];
81#endif 37#endif
82 } 38
83 } 39static inline void send_combo(uint16_t action, bool pressed) {
40 if (action) {
41 if (pressed) {
42 register_code16(action);
84 } else { 43 } else {
85 if (ALL_COMBO_KEYS_ARE_DOWN) { /* Combo was released */ 44 unregister_code16(action);
86 send_combo(combo->keycode, false); 45 }
87 } 46 } else {
47 process_combo_event(current_combo_index, pressed);
48 }
49}
88 50
89 if (is_combo_active) { /* Combo key was tapped */ 51static inline void dump_key_buffer(bool emit) {
52 if (buffer_size == 0) {
53 return;
54 }
55
56 if (emit) {
57 for (uint8_t i = 0; i < buffer_size; i++) {
90#ifdef COMBO_ALLOW_ACTION_KEYS 58#ifdef COMBO_ALLOW_ACTION_KEYS
91 record->event.pressed = true; 59 const action_t action = store_or_get_action(key_buffer[i].event.pressed,
92 process_action(record, store_or_get_action(record->event.pressed, record->event.key)); 60 key_buffer[i].event.key);
93 record->event.pressed = false; 61 process_action(&(key_buffer[i]), action);
94 process_action(record, store_or_get_action(record->event.pressed, record->event.key));
95#else 62#else
96 register_code16(keycode); 63 register_code16(key_buffer[i]);
97 send_keyboard_report(); 64 send_keyboard_report();
98 unregister_code16(keycode);
99#endif 65#endif
100 combo->is_active = false;
101 combo->timer = 0;
102 }
103
104 KEY_STATE_UP(index);
105 } 66 }
67 }
106 68
107 if (NO_COMBO_KEYS_ARE_DOWN) { 69 buffer_size = 0;
108 combo->is_active = true;
109 combo->timer = 0;
110 }
111
112 return is_combo_active;
113} 70}
114 71
115bool process_combo(uint16_t keycode, keyrecord_t *record) 72#define ALL_COMBO_KEYS_ARE_DOWN (((1 << count) - 1) == combo->state)
116{ 73#define KEY_STATE_DOWN(key) \
117 bool is_combo_key = false; 74 do { \
75 combo->state |= (1 << key); \
76 } while (0)
77#define KEY_STATE_UP(key) \
78 do { \
79 combo->state &= ~(1 << key); \
80 } while (0)
81
82static bool process_single_combo(combo_t *combo, uint16_t keycode,
83 keyrecord_t *record) {
84 uint8_t count = 0;
85 uint8_t index = -1;
86 /* Find index of keycode and number of combo keys */
87 for (const uint16_t *keys = combo->keys;; ++count) {
88 uint16_t key = pgm_read_word(&keys[count]);
89 if (keycode == key)
90 index = count;
91 if (COMBO_END == key)
92 break;
93 }
94
95 /* Continue processing if not a combo key */
96 if (-1 == (int8_t)index)
97 return false;
98
99 bool is_combo_active = is_active;
100
101 if (record->event.pressed) {
102 KEY_STATE_DOWN(index);
103
104 if (is_combo_active) {
105 if (ALL_COMBO_KEYS_ARE_DOWN) { /* Combo was pressed */
106 send_combo(combo->keycode, true);
107 drop_buffer = true;
108 }
109 }
110 } else {
111 if (ALL_COMBO_KEYS_ARE_DOWN) { /* Combo was released */
112 send_combo(combo->keycode, false);
113 } else {
114 /* continue processing without immediately returning */
115 is_combo_active = false;
116 }
118 117
119 for (current_combo_index = 0; current_combo_index < COMBO_COUNT; ++current_combo_index) { 118 KEY_STATE_UP(index);
120 combo_t *combo = &key_combos[current_combo_index]; 119 }
121 is_combo_key |= process_single_combo(combo, keycode, record);
122 }
123 120
124 return !is_combo_key; 121 return is_combo_active;
125} 122}
126 123
127void matrix_scan_combo(void) 124#define NO_COMBO_KEYS_ARE_DOWN (0 == combo->state)
128{ 125
129 for (int i = 0; i < COMBO_COUNT; ++i) { 126bool process_combo(uint16_t keycode, keyrecord_t *record) {
130 // Do not treat the (weak) key_combos too strict. 127 bool is_combo_key = false;
131 #pragma GCC diagnostic push 128 drop_buffer = false;
132 #pragma GCC diagnostic ignored "-Warray-bounds" 129 bool no_combo_keys_pressed = false;
133 combo_t *combo = &key_combos[i]; 130
134 #pragma GCC diagnostic pop 131 for (current_combo_index = 0; current_combo_index < COMBO_COUNT;
135 if (combo->is_active && 132 ++current_combo_index) {
136 combo->timer && 133 combo_t *combo = &key_combos[current_combo_index];
137 timer_elapsed(combo->timer) > COMBO_TERM) { 134 is_combo_key |= process_single_combo(combo, keycode, record);
138 135 no_combo_keys_pressed |= NO_COMBO_KEYS_ARE_DOWN;
139 /* This disables the combo, meaning key events for this 136 }
140 * combo will be handled by the next processors in the chain 137
141 */ 138 if (drop_buffer) {
142 combo->is_active = false; 139 /* buffer is only dropped when we complete a combo, so we refresh the timer
140 * here */
141 timer = timer_read();
142 dump_key_buffer(false);
143 } else if (!is_combo_key) {
144 /* if no combos claim the key we need to emit the keybuffer */
145 dump_key_buffer(true);
146
147 // reset state if there are no combo keys pressed at all
148 if (no_combo_keys_pressed) {
149 timer = 0;
150 is_active = true;
151 }
152 } else if (record->event.pressed && is_active) {
153 /* otherwise the key is consumed and placed in the buffer */
154 timer = timer_read();
143 155
156 if (buffer_size < MAX_COMBO_LENGTH) {
144#ifdef COMBO_ALLOW_ACTION_KEYS 157#ifdef COMBO_ALLOW_ACTION_KEYS
145 process_action(&combo->prev_record, 158 key_buffer[buffer_size++] = *record;
146 store_or_get_action(combo->prev_record.event.pressed,
147 combo->prev_record.event.key));
148#else 159#else
149 unregister_code16(combo->prev_key); 160 key_buffer[buffer_size++] = keycode;
150 register_code16(combo->prev_key);
151#endif 161#endif
152 }
153 } 162 }
163 }
164
165 return !is_combo_key;
166}
167
168void matrix_scan_combo(void) {
169 if (is_active && timer && timer_elapsed(timer) > COMBO_TERM) {
170
171 /* This disables the combo, meaning key events for this
172 * combo will be handled by the next processors in the chain
173 */
174 is_active = false;
175 dump_key_buffer(true);
176 }
154} 177}
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