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// Copyright 2021-2022 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "process_caps_word.h"
bool process_caps_word(uint16_t keycode, keyrecord_t* record) {
if (keycode == QK_CAPS_WORD_TOGGLE) {
if (record->event.pressed) {
caps_word_toggle();
}
return false;
}
#ifndef NO_ACTION_ONESHOT
const uint8_t mods = get_mods() | get_oneshot_mods();
#else
const uint8_t mods = get_mods();
#endif // NO_ACTION_ONESHOT
if (!is_caps_word_on()) {
// The following optionally turns on Caps Word by holding left and
// right shifts or by double tapping left shift. This way Caps Word
// may be used without needing a dedicated key and also without
// needing combos or tap dance.
#ifdef BOTH_SHIFTS_TURNS_ON_CAPS_WORD
// Many keyboards enable the Command feature by default, which also
// uses left+right shift. It can be configured to use a different
// key combination by defining IS_COMMAND(). We make a non-fatal
// warning if Command is enabled but IS_COMMAND() is *not* defined.
# if defined(COMMAND_ENABLE) && !defined(IS_COMMAND)
# pragma message "BOTH_SHIFTS_TURNS_ON_CAPS_WORD and Command should not be enabled at the same time, since both use the Left Shift + Right Shift key combination. Please disable Command, or ensure that `IS_COMMAND` is not set to (get_mods() == MOD_MASK_SHIFT)."
# else
if (mods == MOD_MASK_SHIFT
# ifdef COMMAND_ENABLE
// Don't activate Caps Word at the same time as Command.
&& !(IS_COMMAND())
# endif // COMMAND_ENABLE
) {
caps_word_on();
}
# endif // defined(COMMAND_ENABLE) && !defined(IS_COMMAND)
#endif // BOTH_SHIFTS_TURNS_ON_CAPS_WORD
#ifdef DOUBLE_TAP_SHIFT_TURNS_ON_CAPS_WORD
// Double tapping left shift turns on Caps Word.
//
// NOTE: This works with KC_LSFT and one-shot left shift. It
// wouldn't make sense with mod-tap or Space Cadet shift since
// double tapping would of course trigger the tapping action.
if (record->event.pressed) {
static bool tapped = false;
static uint16_t timer = 0;
if (keycode == KC_LSFT || keycode == OSM(MOD_LSFT)) {
if (tapped && !timer_expired(record->event.time, timer)) {
// Left shift was double tapped, activate Caps Word.
caps_word_on();
}
tapped = true;
timer = record->event.time + GET_TAPPING_TERM(keycode, record);
} else {
tapped = false; // Reset when any other key is pressed.
}
}
#endif // DOUBLE_TAP_SHIFT_TURNS_ON_CAPS_WORD
return true;
}
#if CAPS_WORD_IDLE_TIMEOUT > 0
caps_word_reset_idle_timer();
#endif // CAPS_WORD_IDLE_TIMEOUT > 0
// From here on, we only take action on press events.
if (!record->event.pressed) {
return true;
}
if (!(mods & ~(MOD_MASK_SHIFT | MOD_BIT(KC_RALT)))) {
switch (keycode) {
// Ignore MO, TO, TG, TT, and OSL layer switch keys.
case QK_MOMENTARY ... QK_MOMENTARY_MAX:
case QK_TO ... QK_TO_MAX:
case QK_TOGGLE_LAYER ... QK_TOGGLE_LAYER_MAX:
case QK_LAYER_TAP_TOGGLE ... QK_LAYER_TAP_TOGGLE_MAX:
case QK_ONE_SHOT_LAYER ... QK_ONE_SHOT_LAYER_MAX:
// Ignore AltGr.
case KC_RALT:
case OSM(MOD_RALT):
return true;
#ifndef NO_ACTION_TAPPING
// Corresponding to mod keys above, a held mod-tap is handled as:
// * For shift mods, pass KC_LSFT or KC_RSFT to
// caps_word_press_user() to determine whether to continue.
// * For Shift + AltGr (MOD_RSFT | MOD_RALT), pass RSFT(KC_RALT).
// * AltGr (MOD_RALT) is ignored.
// * Otherwise stop Caps Word.
case QK_MOD_TAP ... QK_MOD_TAP_MAX:
if (record->tap.count == 0) { // Mod-tap key is held.
const uint8_t mods = QK_MOD_TAP_GET_MODS(keycode);
switch (mods) {
case MOD_LSFT:
keycode = KC_LSFT;
break;
case MOD_RSFT:
keycode = KC_RSFT;
break;
case MOD_RSFT | MOD_RALT:
keycode = RSFT(KC_RALT);
break;
case MOD_RALT:
return true;
default:
caps_word_off();
return true;
}
} else {
keycode = QK_MOD_TAP_GET_TAP_KEYCODE(keycode);
}
break;
# ifndef NO_ACTION_LAYER
case QK_LAYER_TAP ... QK_LAYER_TAP_MAX:
# endif // NO_ACTION_LAYER
if (record->tap.count == 0) {
return true;
}
keycode = QK_LAYER_TAP_GET_TAP_KEYCODE(keycode);
break;
#endif // NO_ACTION_TAPPING
#ifdef SWAP_HANDS_ENABLE
case QK_SWAP_HANDS ... QK_SWAP_HANDS_MAX:
// Note: IS_SWAP_HANDS_KEYCODE() actually tests for the special action keycodes like SH_TG, SH_TT, ...,
// which currently overlap the SH_T(kc) range.
if (IS_SWAP_HANDS_KEYCODE(keycode) || record->tap.count == 0) {
return true;
}
keycode = QK_SWAP_HANDS_GET_TAP_KEYCODE(keycode);
break;
#endif // SWAP_HANDS_ENABLE
}
#ifdef AUTO_SHIFT_ENABLE
del_weak_mods(get_autoshift_state() ? ~MOD_BIT(KC_LSFT) : 0xff);
#else
clear_weak_mods();
#endif // AUTO_SHIFT_ENABLE
if (caps_word_press_user(keycode)) {
send_keyboard_report();
return true;
}
}
caps_word_off();
return true;
}
__attribute__((weak)) bool caps_word_press_user(uint16_t keycode) {
switch (keycode) {
// Keycodes that continue Caps Word, with shift applied.
case KC_A ... KC_Z:
case KC_MINS:
add_weak_mods(MOD_BIT(KC_LSFT)); // Apply shift to next key.
return true;
// Keycodes that continue Caps Word, without shifting.
case KC_1 ... KC_0:
case KC_BSPC:
case KC_DEL:
case KC_UNDS:
return true;
default:
return false; // Deactivate Caps Word.
}
}
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