505 lines
18 KiB
C
505 lines
18 KiB
C
/* Copyright 2017 Jeremy Cowgar
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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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#ifdef AUTO_SHIFT_ENABLE
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# include <stdbool.h>
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# include <stdio.h>
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# include "process_auto_shift.h"
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# ifndef AUTO_SHIFT_DISABLED_AT_STARTUP
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# define AUTO_SHIFT_STARTUP_STATE true /* enabled */
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# else
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# define AUTO_SHIFT_STARTUP_STATE false /* disabled */
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# endif
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// Stores the last Auto Shift key's up or down time, for evaluation or keyrepeat.
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static uint16_t autoshift_time = 0;
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# if defined(RETRO_SHIFT) && !defined(NO_ACTION_TAPPING)
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// Stores the last key's up or down time, to replace autoshift_time so that Tap Hold times are accurate.
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static uint16_t retroshift_time = 0;
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// Stores a possibly Retro Shift key's up or down time, as retroshift_time needs
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// to be set before the Retro Shift key is evaluated if it is interrupted by an
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// Auto Shifted key.
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static uint16_t last_retroshift_time;
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# endif
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static uint16_t autoshift_timeout = AUTO_SHIFT_TIMEOUT;
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static uint16_t autoshift_lastkey = KC_NO;
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static keyrecord_t autoshift_lastrecord;
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// Keys take 8 bits if modifiers are excluded. This records the shift state
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// when pressed for each key, so that can be passed to the release function
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// and it knows which key needs to be released (if shifted is different base).
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static uint16_t autoshift_shift_states[((1 << 8) + 15) / 16];
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static struct {
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// Whether Auto Shift is enabled.
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bool enabled : 1;
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// Whether the last auto-shifted key was released after the timeout. This
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// is used to replicate the last key for a tap-then-hold.
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bool lastshifted : 1;
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// Whether an auto-shiftable key has been pressed but not processed.
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bool in_progress : 1;
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// Whether the auto-shifted keypress has been registered.
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bool holding_shift : 1;
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// Whether the user is holding a shift and we removed it.
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bool cancelling_lshift : 1;
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bool cancelling_rshift : 1;
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// clang-format wants to remove the true for some reason.
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// clang-format off
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} autoshift_flags = {AUTO_SHIFT_STARTUP_STATE, false, false, false, false, false};
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// clang-format on
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/** \brief Called on physical press, returns whether key should be added to Auto Shift */
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__attribute__((weak)) bool get_custom_auto_shifted_key(uint16_t keycode, keyrecord_t *record) {
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return false;
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}
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/** \brief Called on physical press, returns whether is Auto Shift key */
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__attribute__((weak)) bool get_auto_shifted_key(uint16_t keycode, keyrecord_t *record) {
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switch (keycode) {
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# ifndef NO_AUTO_SHIFT_ALPHA
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case AUTO_SHIFT_ALPHA:
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# endif
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# ifndef NO_AUTO_SHIFT_NUMERIC
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case AUTO_SHIFT_NUMERIC:
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# endif
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# ifndef NO_AUTO_SHIFT_SPECIAL
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case AUTO_SHIFT_SPECIAL:
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# endif
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return true;
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}
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return get_custom_auto_shifted_key(keycode, record);
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}
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/** \brief Called to check whether defines should apply if PER_KEY is set for it */
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__attribute__((weak)) bool get_auto_shift_repeat(uint16_t keycode, keyrecord_t *record) {
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return true;
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}
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__attribute__((weak)) bool get_auto_shift_no_auto_repeat(uint16_t keycode, keyrecord_t *record) {
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return true;
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}
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/** \brief Called when an Auto Shift key needs to be pressed */
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__attribute__((weak)) void autoshift_press_user(uint16_t keycode, bool shifted, keyrecord_t *record) {
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if (shifted) {
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add_weak_mods(MOD_BIT(KC_LSFT));
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}
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register_code16((IS_RETRO(keycode)) ? keycode & 0xFF : keycode);
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}
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/** \brief Called when an Auto Shift key needs to be released */
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__attribute__((weak)) void autoshift_release_user(uint16_t keycode, bool shifted, keyrecord_t *record) {
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unregister_code16((IS_RETRO(keycode)) ? keycode & 0xFF : keycode);
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}
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/** \brief Sets the shift state to use when keyrepeating, required by custom shifts */
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void set_autoshift_shift_state(uint16_t keycode, bool shifted) {
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keycode = keycode & 0xFF;
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if (shifted) {
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autoshift_shift_states[keycode / 16] |= (uint16_t)1 << keycode % 16;
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} else {
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autoshift_shift_states[keycode / 16] &= ~((uint16_t)1 << keycode % 16);
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}
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}
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/** \brief Gets the shift state to use when keyrepeating, required by custom shifts */
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bool get_autoshift_shift_state(uint16_t keycode) {
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keycode = keycode & 0xFF;
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return (autoshift_shift_states[keycode / 16] & (uint16_t)1 << keycode % 16) != (uint16_t)0;
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}
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/** \brief Restores the shift key if it was cancelled by Auto Shift */
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static void autoshift_flush_shift(void) {
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autoshift_flags.holding_shift = false;
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del_weak_mods(MOD_BIT(KC_LSFT));
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if (autoshift_flags.cancelling_lshift) {
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autoshift_flags.cancelling_lshift = false;
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add_mods(MOD_BIT(KC_LSFT));
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}
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if (autoshift_flags.cancelling_rshift) {
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autoshift_flags.cancelling_rshift = false;
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add_mods(MOD_BIT(KC_RSFT));
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}
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send_keyboard_report();
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}
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/** \brief Record the press of an autoshiftable key
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*
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* \return Whether the record should be further processed.
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*/
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static bool autoshift_press(uint16_t keycode, uint16_t now, keyrecord_t *record) {
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// clang-format off
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if ((get_mods()
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# if !defined(NO_ACTION_ONESHOT) && !defined(NO_ACTION_TAPPING)
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| get_oneshot_mods()
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# endif
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) & (~MOD_BIT(KC_LSFT))
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) {
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// clang-format on
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// Prevents keyrepeating unshifted value of key after using it in a key combo.
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autoshift_lastkey = KC_NO;
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# ifndef AUTO_SHIFT_MODIFIERS
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// We can't return true here anymore because custom unshifted values are
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// possible and there's no good way to tell whether the press returned
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// true upon release.
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set_autoshift_shift_state(keycode, false);
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autoshift_press_user(keycode, false, record);
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# if !defined(NO_ACTION_ONESHOT) && !defined(NO_ACTION_TAPPING)
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set_oneshot_mods(get_oneshot_mods() & (~MOD_BIT(KC_LSFT)));
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clear_oneshot_layer_state(ONESHOT_OTHER_KEY_PRESSED);
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# endif
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return false;
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# endif
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}
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// Store record to be sent to user functions if there's no release record then.
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autoshift_lastrecord = *record;
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autoshift_lastrecord.event.pressed = false;
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autoshift_lastrecord.event.time = 0;
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// clang-format off
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# if defined(AUTO_SHIFT_REPEAT) || defined(AUTO_SHIFT_REPEAT_PER_KEY)
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if (keycode == autoshift_lastkey &&
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# ifdef AUTO_SHIFT_REPEAT_PER_KEY
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get_auto_shift_repeat(autoshift_lastkey, record) &&
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# endif
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# if !defined(AUTO_SHIFT_NO_AUTO_REPEAT) || defined(AUTO_SHIFT_NO_AUTO_REPEAT_PER_KEY)
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(
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!autoshift_flags.lastshifted
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# ifdef AUTO_SHIFT_NO_AUTO_REPEAT_PER_KEY
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|| get_auto_shift_no_auto_repeat(autoshift_lastkey, record)
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# endif
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) &&
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# endif
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TIMER_DIFF_16(now, autoshift_time) <
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# ifdef TAPPING_TERM_PER_KEY
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get_tapping_term(autoshift_lastkey, record)
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# else
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TAPPING_TERM
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# endif
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) {
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// clang-format on
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// Allow a tap-then-hold for keyrepeat.
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if (get_mods() & MOD_BIT(KC_LSFT)) {
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autoshift_flags.cancelling_lshift = true;
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del_mods(MOD_BIT(KC_LSFT));
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}
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if (get_mods() & MOD_BIT(KC_RSFT)) {
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autoshift_flags.cancelling_rshift = true;
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del_mods(MOD_BIT(KC_RSFT));
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}
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// autoshift_shift_state doesn't need to be changed.
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autoshift_press_user(autoshift_lastkey, autoshift_flags.lastshifted, record);
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return false;
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}
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# endif
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// Use physical shift state of press event to be more like normal typing.
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# if !defined(NO_ACTION_ONESHOT) && !defined(NO_ACTION_TAPPING)
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autoshift_flags.lastshifted = (get_mods() | get_oneshot_mods()) & MOD_BIT(KC_LSFT);
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set_oneshot_mods(get_oneshot_mods() & (~MOD_BIT(KC_LSFT)));
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# else
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autoshift_flags.lastshifted = get_mods() & MOD_BIT(KC_LSFT);
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# endif
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// Record the keycode so we can simulate it later.
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autoshift_lastkey = keycode;
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autoshift_time = now;
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autoshift_flags.in_progress = true;
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# if !defined(NO_ACTION_ONESHOT) && !defined(NO_ACTION_TAPPING)
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clear_oneshot_layer_state(ONESHOT_OTHER_KEY_PRESSED);
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# endif
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return false;
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}
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/** \brief Registers an autoshiftable key under the right conditions
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*
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* If autoshift_timeout has elapsed, register a shift and the key.
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*
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* If the Auto Shift key is released before the delay has elapsed, register the
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* key without a shift.
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*
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* Called on key down with keycode=KC_NO, auto-shifted key up, and timeout.
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*/
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static void autoshift_end(uint16_t keycode, uint16_t now, bool matrix_trigger, keyrecord_t *record) {
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if (autoshift_flags.in_progress && (keycode == autoshift_lastkey || keycode == KC_NO)) {
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// Process the auto-shiftable key.
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autoshift_flags.in_progress = false;
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// clang-format off
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autoshift_flags.lastshifted =
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autoshift_flags.lastshifted
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|| TIMER_DIFF_16(now, autoshift_time) >=
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# ifdef AUTO_SHIFT_TIMEOUT_PER_KEY
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get_autoshift_timeout(autoshift_lastkey, record)
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# else
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autoshift_timeout
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# endif
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;
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// clang-format on
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set_autoshift_shift_state(autoshift_lastkey, autoshift_flags.lastshifted);
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if (get_mods() & MOD_BIT(KC_LSFT)) {
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autoshift_flags.cancelling_lshift = true;
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del_mods(MOD_BIT(KC_LSFT));
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}
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if (get_mods() & MOD_BIT(KC_RSFT)) {
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autoshift_flags.cancelling_rshift = true;
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del_mods(MOD_BIT(KC_RSFT));
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}
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autoshift_press_user(autoshift_lastkey, autoshift_flags.lastshifted, record);
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// clang-format off
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# if (defined(AUTO_SHIFT_REPEAT) || defined(AUTO_SHIFT_REPEAT_PER_KEY)) && (!defined(AUTO_SHIFT_NO_AUTO_REPEAT) || defined(AUTO_SHIFT_NO_AUTO_REPEAT_PER_KEY))
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if (matrix_trigger
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# ifdef AUTO_SHIFT_REPEAT_PER_KEY
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&& get_auto_shift_repeat(autoshift_lastkey, record)
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# endif
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# ifdef AUTO_SHIFT_NO_AUTO_REPEAT_PER_KEY
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&& !get_auto_shift_no_auto_repeat(autoshift_lastkey, record)
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# endif
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) {
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// Prevents release.
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return;
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}
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# endif
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// clang-format on
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# if TAP_CODE_DELAY > 0
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wait_ms(TAP_CODE_DELAY);
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# endif
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autoshift_release_user(autoshift_lastkey, autoshift_flags.lastshifted, record);
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autoshift_flush_shift();
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} else {
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// Release after keyrepeat.
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autoshift_release_user(keycode, get_autoshift_shift_state(keycode), record);
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if (keycode == autoshift_lastkey) {
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// This will only fire when the key was the last auto-shiftable
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// pressed. That prevents 'aaaaBBBB' then releasing a from unshifting
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// later 'B's (if 'B' wasn't auto-shiftable).
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autoshift_flush_shift();
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}
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}
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// Roll the autoshift_time forward for detecting tap-and-hold.
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autoshift_time = now;
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}
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/** \brief Simulates auto-shifted key releases when timeout is hit
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*
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* Can be called from \c matrix_scan_user so that auto-shifted keys are sent
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* immediately after the timeout has expired, rather than waiting for the key
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* to be released.
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*/
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void autoshift_matrix_scan(void) {
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if (autoshift_flags.in_progress) {
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const uint16_t now = timer_read();
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if (TIMER_DIFF_16(now, autoshift_time) >=
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# ifdef AUTO_SHIFT_TIMEOUT_PER_KEY
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get_autoshift_timeout(autoshift_lastkey, &autoshift_lastrecord)
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# else
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autoshift_timeout
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# endif
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) {
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autoshift_end(autoshift_lastkey, now, true, &autoshift_lastrecord);
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}
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}
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}
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void autoshift_toggle(void) {
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autoshift_flags.enabled = !autoshift_flags.enabled;
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autoshift_flush_shift();
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}
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void autoshift_enable(void) {
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autoshift_flags.enabled = true;
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}
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void autoshift_disable(void) {
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autoshift_flags.enabled = false;
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autoshift_flush_shift();
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}
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# ifndef AUTO_SHIFT_NO_SETUP
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void autoshift_timer_report(void) {
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char display[8];
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snprintf(display, 8, "\n%d\n", autoshift_timeout);
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send_string((const char *)display);
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}
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# endif
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bool get_autoshift_state(void) {
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return autoshift_flags.enabled;
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}
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uint16_t get_generic_autoshift_timeout() {
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return autoshift_timeout;
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}
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__attribute__((weak)) uint16_t get_autoshift_timeout(uint16_t keycode, keyrecord_t *record) {
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return autoshift_timeout;
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}
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void set_autoshift_timeout(uint16_t timeout) {
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autoshift_timeout = timeout;
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}
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bool process_auto_shift(uint16_t keycode, keyrecord_t *record) {
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// Note that record->event.time isn't reliable, see:
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// https://github.com/qmk/qmk_firmware/pull/9826#issuecomment-733559550
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// clang-format off
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const uint16_t now =
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# if !defined(RETRO_SHIFT) || defined(NO_ACTION_TAPPING)
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timer_read()
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# else
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(record->event.pressed) ? retroshift_time : timer_read()
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# endif
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;
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// clang-format on
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if (record->event.pressed) {
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if (autoshift_flags.in_progress) {
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// Evaluate previous key if there is one.
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autoshift_end(KC_NO, now, false, &autoshift_lastrecord);
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}
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switch (keycode) {
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case KC_ASTG:
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autoshift_toggle();
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break;
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case KC_ASON:
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autoshift_enable();
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break;
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case KC_ASOFF:
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autoshift_disable();
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break;
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# ifndef AUTO_SHIFT_NO_SETUP
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case KC_ASUP:
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autoshift_timeout += 5;
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break;
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case KC_ASDN:
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autoshift_timeout -= 5;
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break;
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case KC_ASRP:
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autoshift_timer_report();
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break;
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# endif
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}
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// If Retro Shift is disabled, possible custom actions shouldn't happen.
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// clang-format off
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if (IS_RETRO(keycode)
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# if defined(RETRO_SHIFT) && !defined(NO_ACTION_TAPPING)
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// Not tapped or #defines mean that rolls should use hold action.
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&& (
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record->tap.count == 0
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# ifdef RETRO_TAPPING_PER_KEY
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|| !get_retro_tapping(keycode, record)
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# endif
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|| (record->tap.interrupted && (IS_LT(keycode)
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# if defined(HOLD_ON_OTHER_KEY_PRESS) || defined(HOLD_ON_OTHER_KEY_PRESS_PER_KEY)
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# ifdef HOLD_ON_OTHER_KEY_PRESS_PER_KEY
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? get_hold_on_other_key_press(keycode, record)
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# else
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? true
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# endif
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# else
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? false
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# endif
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# if defined(IGNORE_MOD_TAP_INTERRUPT) || defined(IGNORE_MOD_TAP_INTERRUPT_PER_KEY)
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# ifdef IGNORE_MOD_TAP_INTERRUPT_PER_KEY
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: !get_ignore_mod_tap_interrupt(keycode, record)
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# else
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: false
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# endif
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# else
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: true
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# endif
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))
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)
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# endif
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) {
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// clang-format on
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autoshift_lastkey = KC_NO;
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return true;
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}
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} else {
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if (keycode == KC_LSFT) {
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autoshift_flags.cancelling_lshift = false;
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} else if (keycode == KC_RSFT) {
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autoshift_flags.cancelling_rshift = false;
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}
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// Same as above (for pressed), additional checks are not needed because
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// tap.count gets set to 0 in process_action
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// clang-format off
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else if (IS_RETRO(keycode)
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# if defined(RETRO_SHIFT) && !defined(NO_ACTION_TAPPING)
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&& (
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record->tap.count == 0
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# ifdef RETRO_TAPPING_PER_KEY
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|| !get_retro_tapping(keycode, record)
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# endif
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)
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# endif
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) {
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// Fixes modifiers not being applied to rolls with AUTO_SHIFT_MODIFIERS set.
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# if !defined(IGNORE_MOD_TAP_INTERRUPT) || defined(IGNORE_MOD_TAP_INTERRUPT_PER_KEY)
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if (autoshift_flags.in_progress
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# ifdef IGNORE_MOD_TAP_INTERRUPT_PER_KEY
|
|
&& !get_ignore_mod_tap_interrupt(keycode, record)
|
|
# endif
|
|
) {
|
|
autoshift_end(KC_NO, now, false, &autoshift_lastrecord);
|
|
}
|
|
# endif
|
|
// clang-format on
|
|
return true;
|
|
}
|
|
}
|
|
|
|
if (!autoshift_flags.enabled) {
|
|
return true;
|
|
}
|
|
if (get_auto_shifted_key(keycode, record)) {
|
|
if (record->event.pressed) {
|
|
return autoshift_press(keycode, now, record);
|
|
} else {
|
|
autoshift_end(keycode, now, false, record);
|
|
return false;
|
|
}
|
|
}
|
|
|
|
// Prevent keyrepeating of older keys upon non-AS key event.
|
|
// Not commented at above returns but they serve the same function.
|
|
if (record->event.pressed) {
|
|
autoshift_lastkey = KC_NO;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
# if defined(RETRO_SHIFT) && !defined(NO_ACTION_TAPPING)
|
|
// Called to record time before possible delays by action_tapping_process.
|
|
void retroshift_poll_time(keyevent_t *event) {
|
|
last_retroshift_time = retroshift_time;
|
|
retroshift_time = timer_read();
|
|
}
|
|
// Used to swap the times of Retro Shifted key and Auto Shift key that interrupted it.
|
|
void retroshift_swap_times() {
|
|
if (last_retroshift_time != 0 && autoshift_flags.in_progress) {
|
|
uint16_t temp = retroshift_time;
|
|
retroshift_time = last_retroshift_time;
|
|
last_retroshift_time = temp;
|
|
}
|
|
}
|
|
# endif
|
|
|
|
#endif
|