process_unicodemap.c 2.5 KB

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  1. /* Copyright 2017 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. #include "process_unicodemap.h"
  17. void register_hex32(uint32_t hex) {
  18. bool onzerostart = true;
  19. for(int i = 7; i >= 0; i--) {
  20. if (i <= 3) {
  21. onzerostart = false;
  22. }
  23. uint8_t digit = ((hex >> (i*4)) & 0xF);
  24. if (digit == 0) {
  25. if (!onzerostart) {
  26. register_code(hex_to_keycode(digit));
  27. unregister_code(hex_to_keycode(digit));
  28. }
  29. } else {
  30. register_code(hex_to_keycode(digit));
  31. unregister_code(hex_to_keycode(digit));
  32. onzerostart = false;
  33. }
  34. }
  35. }
  36. __attribute__((weak))
  37. uint16_t unicodemap_index(uint16_t keycode) {
  38. if (keycode >= QK_UNICODEMAP_PAIR) {
  39. // Keycode is a pair: extract index based on Shift / Caps Lock state
  40. uint16_t index = keycode - QK_UNICODEMAP_PAIR;
  41. bool shift = unicode_saved_mods & MOD_MASK_SHIFT, caps = IS_HOST_LED_ON(USB_LED_CAPS_LOCK);
  42. if (shift ^ caps) { index >>= 7; }
  43. return index & 0x7F;
  44. } else {
  45. // Keycode is a regular index
  46. return keycode - QK_UNICODEMAP;
  47. }
  48. }
  49. bool process_unicodemap(uint16_t keycode, keyrecord_t *record) {
  50. if (keycode >= QK_UNICODEMAP && keycode <= QK_UNICODEMAP_PAIR_MAX && record->event.pressed) {
  51. unicode_input_start();
  52. uint32_t code = pgm_read_dword(unicode_map + unicodemap_index(keycode));
  53. uint8_t input_mode = get_unicode_input_mode();
  54. if (code > 0x10FFFF || (code > 0xFFFF && input_mode == UC_WIN)) {
  55. // Character is out of range supported by the platform
  56. unicode_input_cancel();
  57. } else if (code > 0xFFFF && input_mode == UC_OSX) {
  58. // Convert to UTF-16 surrogate pair on Mac
  59. code -= 0x10000;
  60. uint32_t lo = code & 0x3FF, hi = (code & 0xFFC00) >> 10;
  61. register_hex32(hi + 0xD800);
  62. register_hex32(lo + 0xDC00);
  63. unicode_input_finish();
  64. } else {
  65. register_hex32(code);
  66. unicode_input_finish();
  67. }
  68. }
  69. return true;
  70. }