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1 /* Copyright 2016 Jack Humbert
2  *
3  * This program is free software: you can redistribute it and/or modify
4  * it under the terms of the GNU General Public License as published by
5  * the Free Software Foundation, either version 2 of the License, or
6  * (at your option) any later version.
7  *
8  * This program is distributed in the hope that it will be useful,
9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
11  * GNU General Public License for more details.
12  *
13  * You should have received a copy of the GNU General Public License
14  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
15  */
16
17 #ifdef LEADER_ENABLE
18
19 #include "process_leader.h"
20
21 #ifndef LEADER_TIMEOUT
22   #define LEADER_TIMEOUT 300
23 #endif
24
25 __attribute__ ((weak))
26 void leader_start(void) {}
27
28 __attribute__ ((weak))
29 void leader_end(void) {}
30
31 // Leader key stuff
32 bool leading = false;
33 uint16_t leader_time = 0;
34
35 uint16_t leader_sequence[5] = {0, 0, 0, 0, 0};
36 uint8_t leader_sequence_size = 0;
37
38 void qk_leader_start(void) {
39   if (leading) { return; }
40   leader_start();
41   leading = true;
42   leader_time = timer_read();
43   leader_sequence_size = 0;
44   leader_sequence[0] = 0;
45   leader_sequence[1] = 0;
46   leader_sequence[2] = 0;
47   leader_sequence[3] = 0;
48   leader_sequence[4] = 0;
49 }
50
51 bool process_leader(uint16_t keycode, keyrecord_t *record) {
52   // Leader key set-up
53   if (record->event.pressed) {
54     if (leading) {
55       if (timer_elapsed(leader_time) < LEADER_TIMEOUT) {
56 #ifndef LEADER_KEY_STRICT_KEY_PROCESSING
57         if ((keycode >= QK_MOD_TAP && keycode <= QK_MOD_TAP_MAX) || (keycode >= QK_LAYER_TAP && keycode <= QK_LAYER_TAP_MAX)) {
58           keycode = keycode & 0xFF;
59         }
60 #endif // LEADER_KEY_STRICT_KEY_PROCESSING
61         leader_sequence[leader_sequence_size] = keycode;
62         leader_sequence_size++;
63 #ifdef LEADER_PER_KEY_TIMING
64         leader_time = timer_read();
65 #endif
66         return false;
67       }
68     } else {
69       if (keycode == KC_LEAD) {
70         qk_leader_start();
71       }
72     }
73   }
74   return true;
75 }
76
77 #endif