qmk-firmware/quantum/process_keycode/process_grave_esc.c

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/* Copyright 2020
*
* 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_grave_esc.h"
/* true if the last press of GRAVE_ESC was shifted (i.e. GUI or SHIFT were pressed), false otherwise.
* Used to ensure that the correct keycode is released if the key is released.
*/
static bool grave_esc_was_shifted = false;
bool process_grave_esc(uint16_t keycode, keyrecord_t *record) {
if (keycode == GRAVE_ESC) {
const uint8_t mods = get_mods();
uint8_t shifted = mods & MOD_MASK_SG;
#ifdef GRAVE_ESC_ALT_OVERRIDE
// if ALT is pressed, ESC is always sent
// this is handy for the cmd+opt+esc shortcut on macOS, among other things.
if (mods & MOD_MASK_ALT) {
shifted = 0;
}
#endif
#ifdef GRAVE_ESC_CTRL_OVERRIDE
// if CTRL is pressed, ESC is always sent
// this is handy for the ctrl+shift+esc shortcut on windows, among other things.
if (mods & MOD_MASK_CTRL) {
shifted = 0;
}
#endif
#ifdef GRAVE_ESC_GUI_OVERRIDE
// if GUI is pressed, ESC is always sent
if (mods & MOD_MASK_GUI) {
shifted = 0;
}
#endif
#ifdef GRAVE_ESC_SHIFT_OVERRIDE
// if SHIFT is pressed, ESC is always sent
if (mods & MOD_MASK_SHIFT) {
shifted = 0;
}
#endif
if (record->event.pressed) {
grave_esc_was_shifted = shifted;
add_key(shifted ? KC_GRAVE : KC_ESCAPE);
} else {
del_key(grave_esc_was_shifted ? KC_GRAVE : KC_ESCAPE);
}
send_keyboard_report();
return false;
}
// Not a grave keycode so continue processing
return true;
}