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/* Copyright 2020 shela
*
* 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 "quantum.h"
#include "command.h"
#include "action_pseudo.h"
static uint8_t send_key_shift_bit[SHIFT_BIT_SIZE];
/*
* Action Pseudo Process.
* Gets the keycode in the same position of the specified layer.
* The keycode is sent after conversion according to the conversion keymap.
*/
void action_pseudo_process(keyrecord_t *record, uint8_t base_layer, const uint16_t (*keymap)[2]) {
uint8_t prev_shift;
uint16_t keycode;
uint16_t pseudo_keycode;
/* Get keycode from specified layer */
keycode = keymap_key_to_keycode(base_layer, record->event.key);
prev_shift = get_mods() & MOD_MASK_SHIFT;
if (record->event.pressed) {
/* If magic commands entered, keycode is not converted */
if (IS_COMMAND()) {
if (prev_shift) {
add_shift_bit(keycode);
}
register_code(keycode);
return;
}
if (prev_shift) {
pseudo_keycode = convert_keycode(keymap, keycode, true);
dprintf("pressed: %02X, converted: %04X\n", keycode, pseudo_keycode);
add_shift_bit(keycode);
if (IS_LSFT(pseudo_keycode)) {
register_code(QK_LSFT ^ pseudo_keycode);
} else {
/* Delete shift mod temporarily */
unregister_mods(prev_shift);
register_code(pseudo_keycode);
register_mods(prev_shift);
}
} else {
pseudo_keycode = convert_keycode(keymap, keycode, false);
dprintf("pressed: %02X, converted: %04X\n", keycode, pseudo_keycode);
if (IS_LSFT(pseudo_keycode)) {
register_weak_mods(MOD_LSFT);
register_code(QK_LSFT ^ pseudo_keycode);
/* Prevent key repeat to avoid unintended output on Windows */
unregister_code(QK_LSFT ^ pseudo_keycode);
unregister_weak_mods(MOD_LSFT);
} else {
register_code(pseudo_keycode);
}
}
} else {
if (get_shift_bit(keycode)) {
del_shift_bit(keycode);
pseudo_keycode = convert_keycode(keymap, keycode, true);
} else {
pseudo_keycode = convert_keycode(keymap, keycode, false);
}
dprintf("released: %02X, converted: %04X\n", keycode, pseudo_keycode);
if (IS_LSFT(pseudo_keycode)) {
unregister_code(QK_LSFT ^ pseudo_keycode);
} else {
unregister_code(pseudo_keycode);
}
}
}
/* Convert keycode according to the keymap */
uint16_t convert_keycode(const uint16_t (*keymap)[2], uint16_t keycode, bool shift_modded) {
uint16_t pseudo_keycode = 0x00; /* default value */
switch (keycode) {
case KC_A ... KC_CAPSLOCK:
#if defined(__AVR__)
if (shift_modded) {
pseudo_keycode = pgm_read_word(&keymap[keycode][1]);
} else {
pseudo_keycode = pgm_read_word(&keymap[keycode][0]);
}
#else
if (shift_modded) {
pseudo_keycode = keymap[keycode][1];
} else {
pseudo_keycode = keymap[keycode][0];
}
#endif
break;
}
/* If pseudo keycode is the default value, use the keycode as it is */
if (pseudo_keycode == 0x00) {
if (shift_modded) {
pseudo_keycode = S(keycode);
} else {
pseudo_keycode = keycode;
}
}
return pseudo_keycode;
}
uint8_t get_shift_bit(uint16_t keycode) {
if ((keycode >> 3) < SHIFT_BIT_SIZE) {
return send_key_shift_bit[keycode >> 3] & (1 << (keycode & 7));
} else {
dprintf("get_shift_bit: Can't get shift bit. keycode: %02X\n", keycode);
return 0;
}
}
void add_shift_bit(uint16_t keycode) {
if ((keycode >> 3) < SHIFT_BIT_SIZE) {
send_key_shift_bit[keycode >> 3] |= (1 << (keycode & 7));
} else {
dprintf("add_shift_bit: Can't add shift bit. keycode: %02X\n", keycode);
}
}
void del_shift_bit(uint16_t keycode) {
if ((keycode >> 3) < SHIFT_BIT_SIZE) {
send_key_shift_bit[keycode >> 3] &= ~(1 << (keycode & 7));
} else {
dprintf("del_shift_bit: Can't delete shift bit. keycode: %02X\n", keycode);
}
}
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