147 lines
4 KiB
C
147 lines
4 KiB
C
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// Copyright 2021-2023 Google LLC
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// https://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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/**
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* @file select_word.c
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* @brief Select word implementation
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*
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* For full documentation, see
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* <https://getreuer.info/posts/keyboards/select-word>
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*/
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#include "select_word.h"
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// Mac users, uncomment this line:
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// #define MAC_HOTKEYS
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// clang-format off
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enum {
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STATE_NONE, // No selection.
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STATE_SELECTED, // Macro released with something selected.
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STATE_WORD, // Macro held with word(s) selected.
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STATE_FIRST_LINE, // Macro held with one line selected.
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STATE_LINE // Macro held with multiple lines selected.
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};
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// clang-format on
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static uint8_t state = STATE_NONE;
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// Idle timeout timer to disable Select Word after a period of inactivity.
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#if SELECT_WORD_TIMEOUT > 0
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static uint16_t idle_timer = 0;
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void select_word_task(void) {
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if (state && timer_expired(timer_read(), idle_timer)) {
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state = STATE_NONE;
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}
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}
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#endif // SELECT_WORD_TIMEOUT > 0
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bool process_select_word(uint16_t keycode, keyrecord_t* record,
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uint16_t sel_keycode) {
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if (keycode == KC_LSFT || keycode == KC_RSFT) {
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return true;
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}
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#if SELECT_WORD_TIMEOUT > 0
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idle_timer = record->event.time + SELECT_WORD_TIMEOUT;
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#endif // SELECT_WORD_TIMEOUT > 0
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if (keycode == sel_keycode && record->event.pressed) { // On key press.
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const uint8_t mods = get_mods();
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#ifndef NO_ACTION_ONESHOT
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const bool shifted = (mods | get_oneshot_mods()) & MOD_MASK_SHIFT;
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clear_oneshot_mods();
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#else
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const bool shifted = mods & MOD_MASK_SHIFT;
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#endif // NO_ACTION_ONESHOT
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if (!shifted) { // Select word.
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#ifdef MAC_HOTKEYS
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set_mods(MOD_BIT(KC_LALT)); // Hold Left Alt (Option).
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#else
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set_mods(MOD_BIT(KC_LCTL)); // Hold Left Ctrl.
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#endif // MAC_HOTKEYS
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if (state == STATE_NONE) {
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// On first use, tap Ctrl+Right then Ctrl+Left (or with Alt on Mac) to
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// ensure the cursor is positioned at the beginning of the word.
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send_keyboard_report();
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tap_code(KC_RGHT);
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tap_code(KC_LEFT);
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}
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register_mods(MOD_BIT(KC_LSFT));
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register_code(KC_RGHT);
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state = STATE_WORD;
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} else { // Select line.
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if (state == STATE_NONE) {
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#ifdef MAC_HOTKEYS
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// Tap GUI (Command) + Left, then Shift + GUI + Right.
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set_mods(MOD_BIT(KC_LGUI));
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send_keyboard_report();
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tap_code(KC_LEFT);
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register_mods(MOD_BIT(KC_LSFT));
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tap_code(KC_RGHT);
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#else
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// Tap Home, then Shift + End.
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clear_mods();
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send_keyboard_report();
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tap_code(KC_HOME);
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register_mods(MOD_BIT(KC_LSFT));
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tap_code(KC_END);
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#endif // MAC_HOTKEYS
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set_mods(mods);
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state = STATE_FIRST_LINE;
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} else {
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register_code(KC_DOWN);
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state = STATE_LINE;
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}
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}
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return false;
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}
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// `sel_keycode` was released, or another key was pressed.
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switch (state) {
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case STATE_WORD:
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unregister_code(KC_RGHT);
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#ifdef MAC_HOTKEYS
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unregister_mods(MOD_BIT(KC_LSFT) | MOD_BIT(KC_LALT));
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#else
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unregister_mods(MOD_BIT(KC_LSFT) | MOD_BIT(KC_LCTL));
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#endif // MAC_HOTKEYS
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state = STATE_SELECTED;
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break;
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case STATE_FIRST_LINE:
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state = STATE_SELECTED;
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break;
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case STATE_LINE:
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unregister_code(KC_DOWN);
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state = STATE_SELECTED;
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break;
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case STATE_SELECTED:
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if (keycode == KC_ESC) {
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tap_code(KC_RGHT);
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state = STATE_NONE;
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return false;
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}
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// Fallthrough intended.
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default:
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state = STATE_NONE;
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}
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return true;
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}
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