351 lines
10 KiB
C
351 lines
10 KiB
C
/* Copyright 2017 Jack Humbert
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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 "process_unicode_common.h"
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#include "eeprom.h"
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#include <ctype.h>
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#include <string.h>
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unicode_config_t unicode_config;
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uint8_t unicode_saved_mods;
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bool unicode_saved_caps_lock;
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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 = sizeof selected / sizeof *selected;
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static int8_t selected_index;
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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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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) { return unicode_config.input_mode; }
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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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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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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) { eeprom_update_byte(EECONFIG_UNICODEMODE, unicode_config.input_mode); }
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__attribute__((weak)) void unicode_input_start(void) {
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unicode_saved_caps_lock = host_keyboard_led_state().caps_lock;
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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_caps_lock) {
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tap_code(KC_CAPS);
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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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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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register_code(KC_LALT);
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tap_code(KC_PPLS);
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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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}
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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_SPC);
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if (unicode_saved_caps_lock) {
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tap_code(KC_CAPS);
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}
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break;
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case UC_WIN:
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unregister_code(KC_LALT);
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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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}
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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_ESC);
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if (unicode_saved_caps_lock) {
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tap_code(KC_CAPS);
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}
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break;
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case UC_WINC:
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tap_code(KC_ESC);
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break;
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case UC_WIN:
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unregister_code(KC_LALT);
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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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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(digit);
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}
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}
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void register_hex32(uint32_t hex) {
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bool onzerostart = true;
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for (int i = 7; i >= 0; i--) {
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if (i <= 3) {
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onzerostart = false;
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}
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uint8_t digit = ((hex >> (i * 4)) & 0xF);
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if (digit == 0) {
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if (!onzerostart) {
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send_nibble(digit);
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}
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} else {
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send_nibble(digit);
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onzerostart = 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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// clang-format off
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void send_unicode_hex_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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// Find the next code point (token) in the string
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for (; *str == ' '; str++); // Skip leading spaces
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size_t n = strcspn(str, " "); // Length of the current token
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char code_point[n+1];
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strncpy(code_point, str, n); // Copy token into buffer
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code_point[n] = '\0'; // Make sure it's null-terminated
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// Normalize the code point: make all hex digits lowercase
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for (char *p = code_point; *p; p++) {
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*p = tolower((unsigned char)*p);
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}
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// Send the code point as a Unicode input string
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unicode_input_start();
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send_string(code_point);
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unicode_input_finish();
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str += n; // Move to the first ' ' (or '\0') after the current token
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}
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}
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// clang-format on
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// Borrowed from https://nullprogram.com/blog/2017/10/06/
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static const char *decode_utf8(const char *str, int32_t *code_point) {
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const char *next;
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if (str[0] < 0x80) { // U+0000-007F
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*code_point = str[0];
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next = str + 1;
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} else if ((str[0] & 0xE0) == 0xC0) { // U+0080-07FF
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*code_point = ((int32_t)(str[0] & 0x1F) << 6) | ((int32_t)(str[1] & 0x3F) << 0);
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next = str + 2;
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} else if ((str[0] & 0xF0) == 0xE0) { // U+0800-FFFF
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*code_point = ((int32_t)(str[0] & 0x0F) << 12) | ((int32_t)(str[1] & 0x3F) << 6) | ((int32_t)(str[2] & 0x3F) << 0);
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next = str + 3;
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} else if ((str[0] & 0xF8) == 0xF0 && (str[0] <= 0xF4)) { // U+10000-10FFFF
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*code_point = ((int32_t)(str[0] & 0x07) << 18) | ((int32_t)(str[1] & 0x3F) << 12) | ((int32_t)(str[2] & 0x3F) << 6) | ((int32_t)(str[3] & 0x3F) << 0);
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next = str + 4;
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} else {
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*code_point = -1;
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next = str + 1;
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}
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// part of a UTF-16 surrogate pair - invalid
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if (*code_point >= 0xD800 && *code_point <= 0xDFFF) {
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*code_point = -1;
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}
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return next;
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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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// clang-format off
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static void audio_helper(void) {
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#ifdef AUDIO_ENABLE
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switch (get_unicode_input_mode()) {
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# ifdef UNICODE_SONG_MAC
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static float song_mac[][2] = 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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static float song_lnx[][2] = 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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static float song_win[][2] = 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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static float song_bsd[][2] = 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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static float song_winc[][2] = 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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}
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#endif
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}
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// clang-format on
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bool process_unicode_common(uint16_t keycode, keyrecord_t *record) {
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if (record->event.pressed) {
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bool shifted = get_mods() & MOD_MASK_SHIFT;
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switch (keycode) {
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case UNICODE_MODE_FORWARD:
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cycle_unicode_input_mode(shifted ? -1 : +1);
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audio_helper();
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break;
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case UNICODE_MODE_REVERSE:
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cycle_unicode_input_mode(shifted ? +1 : -1);
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audio_helper();
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break;
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case UNICODE_MODE_MAC ... UNICODE_MODE_WINC: {
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// Keycodes and input modes follow the same ordering
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uint8_t delta = keycode - UNICODE_MODE_MAC;
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set_unicode_input_mode(UC_MAC + delta);
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audio_helper();
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break;
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}
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}
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}
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#if defined(UNICODE_ENABLE)
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return process_unicode(keycode, record);
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#elif defined(UNICODEMAP_ENABLE)
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return process_unicodemap(keycode, record);
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#elif defined(UCIS_ENABLE)
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return process_ucis(keycode, record);
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#else
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return true;
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#endif
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}
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