1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
|
/* 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 "print.h"
#include "process_combo.h"
__attribute__((weak)) combo_t key_combos[COMBO_COUNT] = {
};
__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 bool b_combo_enable = true; // defaults to enabled
static uint8_t buffer_size = 0;
#ifdef COMBO_ALLOW_ACTION_KEYS
static keyrecord_t key_buffer[MAX_COMBO_LENGTH];
#else
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 {
unregister_code16(action);
}
} else {
process_combo_event(current_combo_index, pressed);
}
}
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
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(key_buffer[i]);
send_keyboard_report();
#endif
}
}
buffer_size = 0;
}
#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;
}
KEY_STATE_UP(index);
}
return is_combo_active;
}
#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 = true;
if (keycode == CMB_ON && record->event.pressed) {
combo_enable();
return true;
}
if (keycode == CMB_OFF && record->event.pressed) {
combo_disable();
return true;
}
if (keycode == CMB_TOG && record->event.pressed) {
combo_toggle();
return true;
}
if (!is_combo_enabled()) {
return true;
}
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_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
key_buffer[buffer_size++] = *record;
#else
key_buffer[buffer_size++] = keycode;
#endif
}
}
return !is_combo_key;
}
void matrix_scan_combo(void) {
if (b_combo_enable && 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);
}
}
void combo_enable(void) { b_combo_enable = true; }
void combo_disable(void) {
b_combo_enable = is_active = false;
timer = 0;
dump_key_buffer(true);
}
void combo_toggle(void) {
if (b_combo_enable) {
combo_disable();
} else {
combo_enable();
}
}
bool is_combo_enabled(void) { return b_combo_enable; }
|
