Leader key implementation (#326)

* implements leader key for planck experimental

* allows override of leader timeout

* adds ability to use the leader key in seq

* fixes leader keycode

* adds chording prototype

* fixes keycode detection

* moves music mode to quantum.c

* disables chording by default

* updates process_action functions to return bool

3 files changed, 37 insertions, 35 deletions

diff --git a/keyboard/planck/keymaps/experimental/keymap.c b/keyboard/planck/keymaps/experimental/keymap.c
index fc3ac4a97e..8dc158c73f 100644
--- a/keyboard/planck/keymaps/experimental/keymap.c
+++ b/keyboard/planck/keymaps/experimental/keymap.c
@@ -6,6 +6,7 @@
 #ifdef AUDIO_ENABLE
   #include "audio.h"
 #endif
+
 #include "eeconfig.h"
 
 extern keymap_config_t keymap_config;
@@ -78,7 +79,7 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
   {KC_TAB,  KC_Q,    KC_W,    KC_F,    KC_P,    KC_G,    KC_J,    KC_L,    KC_U,    KC_Y,    KC_SCLN, KC_BSPC},
   {KC_ESC,  KC_A,    KC_R,    KC_S,    KC_T,    KC_D,    KC_H,    KC_N,    KC_E,    KC_I,    KC_O,    KC_QUOT},
   {KC_LSFT, KC_Z,    KC_X,    KC_C,    KC_V,    KC_B,    KC_K,    KC_M,    KC_COMM, KC_DOT,  KC_SLSH, KC_ENT },
-  {M(M_BL), KC_LCTL, KC_LALT, KC_LGUI, LOWER,   KC_SPC,  KC_SPC,  RAISE,   KC_LEFT, KC_DOWN, KC_UP,   KC_RGHT}
+  {KC_LEAD, KC_LCTL, KC_LALT, KC_LGUI, LOWER,   KC_SPC,  KC_SPC,  RAISE,   KC_LEFT, KC_DOWN, KC_UP,   KC_RGHT}
 },
 
 /* Dvorak
@@ -291,7 +292,7 @@ const macro_t *action_get_macro(keyrecord_t *record, uint8_t id, uint8_t opt)
         case 8:
           if (record->event.pressed) {
             #ifdef AUDIO_ENABLE
-              layer_off(_MUSIC);
+              music_activated = false;
               stop_all_notes();
             #endif
           }
@@ -300,7 +301,7 @@ const macro_t *action_get_macro(keyrecord_t *record, uint8_t id, uint8_t opt)
           if (record->event.pressed) {
             #ifdef AUDIO_ENABLE
               PLAY_NOTE_ARRAY(music_scale, false, 0);
-              layer_on(_MUSIC);
+              music_activated = true;
             #endif
           }
         break;
@@ -360,24 +361,35 @@ void matrix_init_user(void) {
 }
 
 #ifdef AUDIO_ENABLE
-void play_goodbye_tone()
-{
-  PLAY_NOTE_ARRAY(goodbye, false, 0);
-  _delay_ms(150);
-}
+  void play_goodbye_tone(void)
+  {
+    PLAY_NOTE_ARRAY(goodbye, false, 0);
+    _delay_ms(150);
+  }
+#endif
 
-uint8_t starting_note = 0x0C;
-int offset = 0;
+LEADER_EXTERNS();
 
-void process_action_user(keyrecord_t *record) {
+#define LEADER_TIMEOUT 300
 
-  if (IS_LAYER_ON(_MUSIC)) {
-    if (record->event.pressed) {
-        play_note(((double)220.0)*pow(2.0, -4.0)*pow(2.0,(starting_note + SCALE[record->event.key.col + offset])/12.0+(MATRIX_ROWS - record->event.key.row)), 0xF);
-    } else {
-        stop_note(((double)220.0)*pow(2.0, -4.0)*pow(2.0,(starting_note + SCALE[record->event.key.col + offset])/12.0+(MATRIX_ROWS - record->event.key.row)));
+void matrix_scan_user(void) {
+  LEADER_DICTIONARY() { 
+    leading = false;
+    leader_end(); 
+
+    SEQ_ONE_KEY(KC_F) {
+      register_code(KC_S);
+      unregister_code(KC_S);
+    }
+    SEQ_TWO_KEYS(KC_A, KC_S) {
+      register_code(KC_H);
+      unregister_code(KC_H);
+    }
+    SEQ_THREE_KEYS(KC_A, KC_S, KC_D) {
+      register_code(KC_LGUI);
+      register_code(KC_S);
+      unregister_code(KC_S);
+      unregister_code(KC_LGUI);
     }
   }
-
 }
-#endif
diff --git a/keyboard/planck/planck.c b/keyboard/planck/planck.c
index 446353dbf5..da7b3a1702 100644
--- a/keyboard/planck/planck.c
+++ b/keyboard/planck/planck.c
@@ -7,7 +7,9 @@ __attribute__ ((weak))
 void matrix_scan_user(void) {}
 
 __attribute__ ((weak))
-void process_action_user(keyrecord_t *record) {}
+bool process_action_user(keyrecord_t *record) {
+    return true;
+}
 
 __attribute__ ((weak))
 void led_set_user(uint8_t usb_led) {}
@@ -32,8 +34,8 @@ void matrix_scan_kb(void) {
 	matrix_scan_user();
 }
 
-void process_action_kb(keyrecord_t *record) {
-	process_action_user(record);
+bool process_action_kb(keyrecord_t *record) {
+	return process_action_user(record);
 }
 
 void led_set_kb(uint8_t usb_led) {
diff --git a/keyboard/planck/planck.h b/keyboard/planck/planck.h
index cfd4956bf1..8aec6b2627 100644
--- a/keyboard/planck/planck.h
+++ b/keyboard/planck/planck.h
@@ -1,19 +1,7 @@
 #ifndef PLANCK_H
 #define PLANCK_H
 
-#include "matrix.h"
-#include "keymap_common.h"
-#ifdef BACKLIGHT_ENABLE
-	#include "backlight.h"
-#endif
-#ifdef RGBLIGHT_ENABLE
-  #include "rgblight.h"
-#endif
-#include <stddef.h>
-#include <avr/io.h>
-#ifdef MIDI_ENABLE
-	#include <keymap_midi.h>
-#endif
+#include "quantum.h"
 
 #define PLANCK_MIT( \
 	k00, k01, k02, k03, k04, k05, k06, k07, k08, k09, k0a, k0b, \
@@ -43,7 +31,7 @@
 
 void matrix_init_user(void);
 void matrix_scan_user(void);
-void process_action_user(keyrecord_t *record);
+bool process_action_user(keyrecord_t *record);
 
 void led_set_user(uint8_t usb_led);
 void backlight_init_ports(void);