qmk

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git clone git://git.z3bra.org/qmk.git
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process_unicodemap.c (2790B)


      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 
     17 #include "process_unicodemap.h"
     18 
     19 void register_hex32(uint32_t hex) {
     20     bool onzerostart = true;
     21     for (int i = 7; i >= 0; i--) {
     22         if (i <= 3) {
     23             onzerostart = false;
     24         }
     25         uint8_t digit = ((hex >> (i * 4)) & 0xF);
     26         if (digit == 0) {
     27             if (!onzerostart) {
     28                 register_code(hex_to_keycode(digit));
     29                 unregister_code(hex_to_keycode(digit));
     30             }
     31         } else {
     32             register_code(hex_to_keycode(digit));
     33             unregister_code(hex_to_keycode(digit));
     34             onzerostart = false;
     35         }
     36     }
     37 }
     38 
     39 __attribute__((weak)) uint16_t unicodemap_index(uint16_t keycode) {
     40     if (keycode >= QK_UNICODEMAP_PAIR) {
     41         // Keycode is a pair: extract index based on Shift / Caps Lock state
     42         uint16_t index = keycode - QK_UNICODEMAP_PAIR;
     43 
     44         bool shift = unicode_saved_mods & MOD_MASK_SHIFT, caps = IS_HOST_LED_ON(USB_LED_CAPS_LOCK);
     45         if (shift ^ caps) {
     46             index >>= 7;
     47         }
     48 
     49         return index & 0x7F;
     50     } else {
     51         // Keycode is a regular index
     52         return keycode - QK_UNICODEMAP;
     53     }
     54 }
     55 
     56 bool process_unicodemap(uint16_t keycode, keyrecord_t *record) {
     57     if (keycode >= QK_UNICODEMAP && keycode <= QK_UNICODEMAP_PAIR_MAX && record->event.pressed) {
     58         unicode_input_start();
     59 
     60         uint32_t code       = pgm_read_dword(unicode_map + unicodemap_index(keycode));
     61         uint8_t  input_mode = get_unicode_input_mode();
     62 
     63         if (code > 0x10FFFF || (code > 0xFFFF && input_mode == UC_WIN)) {
     64             // Character is out of range supported by the platform
     65             unicode_input_cancel();
     66         } else if (code > 0xFFFF && input_mode == UC_OSX) {
     67             // Convert to UTF-16 surrogate pair on Mac
     68             code -= 0x10000;
     69             uint32_t lo = code & 0x3FF, hi = (code & 0xFFC00) >> 10;
     70             register_hex32(hi + 0xD800);
     71             register_hex32(lo + 0xDC00);
     72             unicode_input_finish();
     73         } else {
     74             register_hex32(code);
     75             unicode_input_finish();
     76         }
     77     }
     78     return true;
     79 }