adapts unicode to quantum.c (#333)

* Unicode

to have unicode input you need to:

- set your OS input method to UNICODE if needed
- enable unicode in your makefile
- copy the action_function from
keyboard/planck/keymaps/unicode/unicode.c to your keymap.c
set the target OS method in your keymap.c: void matrix_init_user() {
set_unicode_mode(UC_OSX); } you can then switch when you want with:
set_unicode_mode(UC_OSX); set_unicode_mode(UC_LNX);
set_unicode_mode(UC_WIN);
put some unicode codes in your keymap like so: UC(0x0061)
I did change the bit mask in quantum/keymap_common.c and .h
I’m afraid we will need uint32 to get a total support for all unicode
tables or relocate the handler as @mbarkhau did.

* rearranges keycode values, hooks-up unicode

* removes extra lalt ref

* adds unicode shortcuts and example

1 files changed, 72 insertions, 7 deletions

diff --git a/quantum/quantum.c b/quantum/quantum.c
index e4d7b9185..1e91ac04a 100644
--- a/quantum/quantum.c
+++ b/quantum/quantum.c
@@ -23,6 +23,18 @@ int offset = 7;
   
 #ifdef AUDIO_ENABLE
   bool music_activated = false;
+  float music_scale[][2] = SONG(MUSIC_SCALE_SOUND);
+
+  // music sequencer
+  static bool music_sequence_recording = false;
+  static bool music_sequence_playing = false;
+  static float music_sequence[16] = {0};
+  static uint8_t music_sequence_count = 0;
+  static uint8_t music_sequence_position = 0;
+
+  static uint16_t music_sequence_timer = 0;
+  static uint16_t music_sequence_interval = 100;
+
 #endif
 
 #ifdef MIDI_ENABLE
@@ -44,6 +56,10 @@ uint8_t chord_keys[CHORDING_MAX] = {0};
 uint8_t chord_key_count = 0;
 uint8_t chord_key_down = 0;
 
+#ifdef UNICODE_ENABLE
+  static uint8_t input_mode;
+#endif
+
 bool keys_chord(uint8_t keys[]) {
   uint8_t keys_size = sizeof(keys)/sizeof(keys[0]);
   bool pass = true;
@@ -66,14 +82,25 @@ bool keys_chord(uint8_t keys[]) {
   return (pass && (in == keys_size));
 }
 
-static bool music_sequence_recording = false;
-static bool music_sequence_playing = false;
-static float music_sequence[16] = {0};
-static uint8_t music_sequence_count = 0;
-static uint8_t music_sequence_position = 0;
+#ifdef UNICODE_ENABLE
+
+uint16_t hex_to_keycode(uint8_t hex)
+{
+  if (hex == 0x0) {
+    return KC_0;
+  } else if (hex < 0xA) {
+    return KC_1 + (hex - 0x1);
+  } else {
+    return KC_A + (hex - 0xA);
+  }
+}
+
+void set_unicode_mode(uint8_t os_target)
+{
+  input_mode = os_target;
+}
 
-static uint16_t music_sequence_timer = 0;
-static uint16_t music_sequence_interval = 100;
+#endif
 
 bool process_record_quantum(keyrecord_t *record) {
 
@@ -347,6 +374,44 @@ bool process_record_quantum(keyrecord_t *record) {
 
 #endif
 
+#ifdef UNICODE_ENABLE
+
+  if (keycode > UNICODE(0) && record->event.pressed) {
+    uint16_t unicode = keycode & 0x7FFF;
+    switch(input_mode) {
+      case UC_OSX:
+        register_code(KC_LALT);
+        break;
+      case UC_LNX:
+        register_code(KC_LCTL);
+        register_code(KC_LSFT);
+        register_code(KC_U);
+        unregister_code(KC_U);
+        break;
+      case UC_WIN:
+        register_code(KC_LALT);
+        register_code(KC_PPLS);
+        unregister_code(KC_PPLS);
+        break;
+    }
+    for(int i = 3; i >= 0; i--) {
+        uint8_t digit = ((unicode >> (i*4)) & 0xF);
+        register_code(hex_to_keycode(digit));
+        unregister_code(hex_to_keycode(digit));
+    }
+    switch(input_mode) {
+      case UC_OSX:
+      case UC_WIN:
+        unregister_code(KC_LALT);
+        break;
+      case UC_LNX:
+        unregister_code(KC_LCTL);
+        unregister_code(KC_LSFT);
+        break;
+    }
+  }
+
+#endif
 
   return process_action_kb(record);
 }