qmk_firmware/quantum/process_keycode/process_unicodemap.c

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/* Copyright 2017 Jack Humbert
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "process_unicodemap.h"
void register_hex32(uint32_t hex) {
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bool onzerostart = true;
for (int i = 7; i >= 0; i--) {
if (i <= 3) {
onzerostart = false;
}
uint8_t digit = ((hex >> (i * 4)) & 0xF);
if (digit == 0) {
if (!onzerostart) {
register_code(hex_to_keycode(digit));
unregister_code(hex_to_keycode(digit));
}
} else {
register_code(hex_to_keycode(digit));
unregister_code(hex_to_keycode(digit));
onzerostart = false;
}
}
}
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__attribute__((weak)) uint16_t unicodemap_index(uint16_t keycode) {
if (keycode >= QK_UNICODEMAP_PAIR) {
// Keycode is a pair: extract index based on Shift / Caps Lock state
uint16_t index = keycode - QK_UNICODEMAP_PAIR;
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bool shift = unicode_saved_mods & MOD_MASK_SHIFT, caps = IS_HOST_LED_ON(USB_LED_CAPS_LOCK);
if (shift ^ caps) {
index >>= 7;
}
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return index & 0x7F;
} else {
// Keycode is a regular index
return keycode - QK_UNICODEMAP;
}
}
bool process_unicodemap(uint16_t keycode, keyrecord_t *record) {
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if (keycode >= QK_UNICODEMAP && keycode <= QK_UNICODEMAP_PAIR_MAX && record->event.pressed) {
unicode_input_start();
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uint32_t code = pgm_read_dword(unicode_map + unicodemap_index(keycode));
uint8_t input_mode = get_unicode_input_mode();
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if (code > 0x10FFFF || (code > 0xFFFF && input_mode == UC_WIN)) {
// Character is out of range supported by the platform
unicode_input_cancel();
} else if (code > 0xFFFF && input_mode == UC_OSX) {
// Convert to UTF-16 surrogate pair on Mac
code -= 0x10000;
uint32_t lo = code & 0x3FF, hi = (code & 0xFFC00) >> 10;
register_hex32(hi + 0xD800);
register_hex32(lo + 0xDC00);
unicode_input_finish();
} else {
register_hex32(code);
unicode_input_finish();
}
}
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return true;
}