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386 lines
11 KiB
386 lines
11 KiB
/* Copyright 2022
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "unicode.h"
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#include "eeprom.h"
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#include "eeconfig.h"
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#include "action.h"
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#include "action_util.h"
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#include "host.h"
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#include "keycode.h"
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#include "wait.h"
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#include "send_string.h"
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#include "utf8.h"
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#if defined(AUDIO_ENABLE)
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# include "audio.h"
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#endif
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#if defined(UNICODE_ENABLE) + defined(UNICODEMAP_ENABLE) + defined(UCIS_ENABLE) > 1
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# error "Cannot enable more than one Unicode method (UNICODE, UNICODEMAP, UCIS) at the same time"
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#endif
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// Keycodes used for starting Unicode input on different platforms
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#ifndef UNICODE_KEY_MAC
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# define UNICODE_KEY_MAC KC_LEFT_ALT
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#endif
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#ifndef UNICODE_KEY_LNX
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# define UNICODE_KEY_LNX LCTL(LSFT(KC_U))
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#endif
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#ifndef UNICODE_KEY_WINC
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# define UNICODE_KEY_WINC KC_RIGHT_ALT
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#endif
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// Comma-delimited, ordered list of input modes selected for use (e.g. in cycle)
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// Example: #define UNICODE_SELECTED_MODES UC_WINC, UC_LNX
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#ifndef UNICODE_SELECTED_MODES
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# define UNICODE_SELECTED_MODES -1
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#endif
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// Whether input mode changes in cycle should be written to EEPROM
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#ifndef UNICODE_CYCLE_PERSIST
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# define UNICODE_CYCLE_PERSIST true
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#endif
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// Delay between starting Unicode input and sending a sequence, in ms
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#ifndef UNICODE_TYPE_DELAY
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# define UNICODE_TYPE_DELAY 10
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#endif
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unicode_config_t unicode_config;
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uint8_t unicode_saved_mods;
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led_t unicode_saved_led_state;
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#if UNICODE_SELECTED_MODES != -1
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static uint8_t selected[] = {UNICODE_SELECTED_MODES};
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static int8_t selected_count = ARRAY_SIZE(selected);
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static int8_t selected_index;
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#endif
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/** \brief unicode input mode set at user level
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*
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* Run user code on unicode input mode change
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*/
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__attribute__((weak)) void unicode_input_mode_set_user(uint8_t input_mode) {}
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/** \brief unicode input mode set at keyboard level
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*
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* Run keyboard code on unicode input mode change
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*/
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__attribute__((weak)) void unicode_input_mode_set_kb(uint8_t input_mode) {
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unicode_input_mode_set_user(input_mode);
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}
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#ifdef AUDIO_ENABLE
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# ifdef UNICODE_SONG_MAC
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static float song_mac[][2] = UNICODE_SONG_MAC;
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# endif
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# ifdef UNICODE_SONG_LNX
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static float song_lnx[][2] = UNICODE_SONG_LNX;
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# endif
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# ifdef UNICODE_SONG_WIN
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static float song_win[][2] = UNICODE_SONG_WIN;
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# endif
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# ifdef UNICODE_SONG_BSD
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static float song_bsd[][2] = UNICODE_SONG_BSD;
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# endif
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# ifdef UNICODE_SONG_WINC
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static float song_winc[][2] = UNICODE_SONG_WINC;
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# endif
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# ifdef UNICODE_SONG_EMACS
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static float song_emacs[][2] = UNICODE_SONG_EMACS;
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# endif
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static void unicode_play_song(uint8_t mode) {
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switch (mode) {
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# ifdef UNICODE_SONG_MAC
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case UC_MAC:
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PLAY_SONG(song_mac);
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break;
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# endif
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# ifdef UNICODE_SONG_LNX
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case UC_LNX:
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PLAY_SONG(song_lnx);
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break;
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# endif
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# ifdef UNICODE_SONG_WIN
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case UC_WIN:
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PLAY_SONG(song_win);
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break;
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# endif
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# ifdef UNICODE_SONG_BSD
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case UC_BSD:
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PLAY_SONG(song_bsd);
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break;
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# endif
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# ifdef UNICODE_SONG_WINC
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case UC_WINC:
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PLAY_SONG(song_winc);
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break;
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# endif
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# ifdef UNICODE_SONG_EMACS
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case UC_EMACS:
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PLAY_SONG(song_emacs);
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break;
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# endif
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}
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}
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#endif
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void unicode_input_mode_init(void) {
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unicode_config.raw = eeprom_read_byte(EECONFIG_UNICODEMODE);
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#if UNICODE_SELECTED_MODES != -1
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# if UNICODE_CYCLE_PERSIST
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// Find input_mode in selected modes
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int8_t i;
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for (i = 0; i < selected_count; i++) {
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if (selected[i] == unicode_config.input_mode) {
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selected_index = i;
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break;
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}
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}
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if (i == selected_count) {
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// Not found: input_mode isn't selected, change to one that is
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unicode_config.input_mode = selected[selected_index = 0];
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}
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# else
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// Always change to the first selected input mode
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unicode_config.input_mode = selected[selected_index = 0];
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# endif
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#endif
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unicode_input_mode_set_kb(unicode_config.input_mode);
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dprintf("Unicode input mode init to: %u\n", unicode_config.input_mode);
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}
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uint8_t get_unicode_input_mode(void) {
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return unicode_config.input_mode;
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}
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void set_unicode_input_mode(uint8_t mode) {
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unicode_config.input_mode = mode;
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persist_unicode_input_mode();
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#ifdef AUDIO_ENABLE
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unicode_play_song(mode);
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#endif
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unicode_input_mode_set_kb(mode);
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dprintf("Unicode input mode set to: %u\n", unicode_config.input_mode);
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}
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void cycle_unicode_input_mode(int8_t offset) {
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#if UNICODE_SELECTED_MODES != -1
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selected_index = (selected_index + offset) % selected_count;
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if (selected_index < 0) {
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selected_index += selected_count;
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}
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unicode_config.input_mode = selected[selected_index];
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# if UNICODE_CYCLE_PERSIST
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persist_unicode_input_mode();
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# endif
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# ifdef AUDIO_ENABLE
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unicode_play_song(unicode_config.input_mode);
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# endif
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unicode_input_mode_set_kb(unicode_config.input_mode);
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dprintf("Unicode input mode cycle to: %u\n", unicode_config.input_mode);
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#endif
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}
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void persist_unicode_input_mode(void) {
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eeprom_update_byte(EECONFIG_UNICODEMODE, unicode_config.input_mode);
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}
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__attribute__((weak)) void unicode_input_start(void) {
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unicode_saved_led_state = host_keyboard_led_state();
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// Note the order matters here!
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// Need to do this before we mess around with the mods, or else
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// UNICODE_KEY_LNX (which is usually Ctrl-Shift-U) might not work
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// correctly in the shifted case.
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if (unicode_config.input_mode == UC_LNX && unicode_saved_led_state.caps_lock) {
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tap_code(KC_CAPS_LOCK);
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}
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unicode_saved_mods = get_mods(); // Save current mods
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clear_mods(); // Unregister mods to start from a clean state
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clear_weak_mods();
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switch (unicode_config.input_mode) {
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case UC_MAC:
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register_code(UNICODE_KEY_MAC);
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break;
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case UC_LNX:
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tap_code16(UNICODE_KEY_LNX);
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break;
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case UC_WIN:
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// For increased reliability, use numpad keys for inputting digits
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if (!unicode_saved_led_state.num_lock) {
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tap_code(KC_NUM_LOCK);
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}
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register_code(KC_LEFT_ALT);
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wait_ms(UNICODE_TYPE_DELAY);
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tap_code(KC_KP_PLUS);
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break;
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case UC_WINC:
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tap_code(UNICODE_KEY_WINC);
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tap_code(KC_U);
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break;
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case UC_EMACS:
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// The usual way to type unicode in emacs is C-x-8 <RET> then the unicode number in hex
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tap_code16(LCTL(KC_X));
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tap_code16(KC_8);
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tap_code16(KC_ENTER);
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break;
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}
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wait_ms(UNICODE_TYPE_DELAY);
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}
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__attribute__((weak)) void unicode_input_finish(void) {
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switch (unicode_config.input_mode) {
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case UC_MAC:
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unregister_code(UNICODE_KEY_MAC);
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break;
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case UC_LNX:
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tap_code(KC_SPACE);
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if (unicode_saved_led_state.caps_lock) {
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tap_code(KC_CAPS_LOCK);
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}
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break;
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case UC_WIN:
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unregister_code(KC_LEFT_ALT);
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if (!unicode_saved_led_state.num_lock) {
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tap_code(KC_NUM_LOCK);
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}
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break;
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case UC_WINC:
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tap_code(KC_ENTER);
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break;
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case UC_EMACS:
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tap_code16(KC_ENTER);
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break;
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}
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set_mods(unicode_saved_mods); // Reregister previously set mods
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}
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__attribute__((weak)) void unicode_input_cancel(void) {
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switch (unicode_config.input_mode) {
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case UC_MAC:
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unregister_code(UNICODE_KEY_MAC);
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break;
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case UC_LNX:
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tap_code(KC_ESCAPE);
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if (unicode_saved_led_state.caps_lock) {
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tap_code(KC_CAPS_LOCK);
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}
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break;
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case UC_WINC:
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tap_code(KC_ESCAPE);
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break;
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case UC_WIN:
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unregister_code(KC_LEFT_ALT);
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if (!unicode_saved_led_state.num_lock) {
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tap_code(KC_NUM_LOCK);
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}
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break;
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case UC_EMACS:
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tap_code16(LCTL(KC_G)); // C-g cancels
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break;
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}
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set_mods(unicode_saved_mods); // Reregister previously set mods
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}
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// clang-format off
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static void send_nibble_wrapper(uint8_t digit) {
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if (unicode_config.input_mode == UC_WIN) {
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uint8_t kc = digit < 10
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? KC_KP_1 + (10 + digit - 1) % 10
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: KC_A + (digit - 10);
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tap_code(kc);
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return;
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}
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send_nibble(digit);
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}
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// clang-format on
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void register_hex(uint16_t hex) {
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for (int i = 3; i >= 0; i--) {
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uint8_t digit = ((hex >> (i * 4)) & 0xF);
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send_nibble_wrapper(digit);
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}
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}
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void register_hex32(uint32_t hex) {
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bool first_digit = true;
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bool needs_leading_zero = (unicode_config.input_mode == UC_WINC);
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for (int i = 7; i >= 0; i--) {
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// Work out the digit we're going to transmit
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uint8_t digit = ((hex >> (i * 4)) & 0xF);
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// If we're still searching for the first digit, and found one
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// that needs a leading zero sent out, send the zero.
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if (first_digit && needs_leading_zero && digit > 9) {
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send_nibble_wrapper(0);
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}
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// Always send digits (including zero) if we're down to the last
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// two bytes of nibbles.
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bool must_send = i < 4;
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// If we've found a digit worth transmitting, do so.
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if (digit != 0 || !first_digit || must_send) {
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send_nibble_wrapper(digit);
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first_digit = false;
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}
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}
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}
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void register_unicode(uint32_t code_point) {
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if (code_point > 0x10FFFF || (code_point > 0xFFFF && unicode_config.input_mode == UC_WIN)) {
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// Code point out of range, do nothing
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return;
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}
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unicode_input_start();
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if (code_point > 0xFFFF && unicode_config.input_mode == UC_MAC) {
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// Convert code point to UTF-16 surrogate pair on macOS
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code_point -= 0x10000;
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uint32_t lo = code_point & 0x3FF, hi = (code_point & 0xFFC00) >> 10;
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register_hex32(hi + 0xD800);
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register_hex32(lo + 0xDC00);
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} else {
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register_hex32(code_point);
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}
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unicode_input_finish();
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}
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void send_unicode_string(const char *str) {
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if (!str) {
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return;
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}
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while (*str) {
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int32_t code_point = 0;
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str = decode_utf8(str, &code_point);
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if (code_point >= 0) {
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register_unicode(code_point);
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}
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}
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}
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