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/* Copyright 2016 Jack Humbert
*
* 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"
static uint16_t active_td;
static uint16_t last_tap_time;
void tap_dance_pair_on_each_tap(tap_dance_state_t *state, void *user_data) {
tap_dance_pair_t *pair = (tap_dance_pair_t *)user_data;
if (state->count == 2) {
register_code16(pair->kc2);
state->finished = true;
}
}
void tap_dance_pair_finished(tap_dance_state_t *state, void *user_data) {
tap_dance_pair_t *pair = (tap_dance_pair_t *)user_data;
register_code16(pair->kc1);
}
void tap_dance_pair_reset(tap_dance_state_t *state, void *user_data) {
tap_dance_pair_t *pair = (tap_dance_pair_t *)user_data;
if (state->count == 1) {
wait_ms(TAP_CODE_DELAY);
unregister_code16(pair->kc1);
} else if (state->count == 2) {
unregister_code16(pair->kc2);
}
}
void tap_dance_dual_role_on_each_tap(tap_dance_state_t *state, void *user_data) {
tap_dance_dual_role_t *pair = (tap_dance_dual_role_t *)user_data;
if (state->count == 2) {
layer_move(pair->layer);
state->finished = true;
}
}
void tap_dance_dual_role_finished(tap_dance_state_t *state, void *user_data) {
tap_dance_dual_role_t *pair = (tap_dance_dual_role_t *)user_data;
if (state->count == 1) {
register_code16(pair->kc);
} else if (state->count == 2) {
pair->layer_function(pair->layer);
}
}
void tap_dance_dual_role_reset(tap_dance_state_t *state, void *user_data) {
tap_dance_dual_role_t *pair = (tap_dance_dual_role_t *)user_data;
if (state->count == 1) {
wait_ms(TAP_CODE_DELAY);
unregister_code16(pair->kc);
}
}
static inline void _process_tap_dance_action_fn(tap_dance_state_t *state, void *user_data, tap_dance_user_fn_t fn) {
if (fn) {
fn(state, user_data);
}
}
static inline void process_tap_dance_action_on_each_tap(tap_dance_action_t *action) {
action->state.count++;
action->state.weak_mods = get_mods();
action->state.weak_mods |= get_weak_mods();
#ifndef NO_ACTION_ONESHOT
action->state.oneshot_mods = get_oneshot_mods();
#endif
_process_tap_dance_action_fn(&action->state, action->user_data, action->fn.on_each_tap);
}
static inline void process_tap_dance_action_on_reset(tap_dance_action_t *action) {
_process_tap_dance_action_fn(&action->state, action->user_data, action->fn.on_reset);
del_weak_mods(action->state.weak_mods);
#ifndef NO_ACTION_ONESHOT
del_mods(action->state.oneshot_mods);
#endif
send_keyboard_report();
action->state = (const tap_dance_state_t){0};
}
static inline void process_tap_dance_action_on_dance_finished(tap_dance_action_t *action) {
if (!action->state.finished) {
action->state.finished = true;
add_weak_mods(action->state.weak_mods);
#ifndef NO_ACTION_ONESHOT
add_mods(action->state.oneshot_mods);
#endif
send_keyboard_report();
_process_tap_dance_action_fn(&action->state, action->user_data, action->fn.on_dance_finished);
}
active_td = 0;
if (!action->state.pressed) {
// There will not be a key release event, so reset now.
process_tap_dance_action_on_reset(action);
}
}
bool preprocess_tap_dance(uint16_t keycode, keyrecord_t *record) {
tap_dance_action_t *action;
if (!record->event.pressed) return false;
if (!active_td || keycode == active_td) return false;
action = &tap_dance_actions[TD_INDEX(active_td)];
action->state.interrupted = true;
action->state.interrupting_keycode = keycode;
process_tap_dance_action_on_dance_finished(action);
// Tap dance actions can leave some weak mods active (e.g., if the tap dance is mapped to a keycode with
// modifiers), but these weak mods should not affect the keypress which interrupted the tap dance.
clear_weak_mods();
// Signal that a tap dance has been finished due to being interrupted,
// therefore the keymap lookup for the currently processed event needs to
// be repeated with the current layer state that might have been updated by
// the finished tap dance.
return true;
}
bool process_tap_dance(uint16_t keycode, keyrecord_t *record) {
tap_dance_action_t *action;
switch (keycode) {
case QK_TAP_DANCE ... QK_TAP_DANCE_MAX:
action = &tap_dance_actions[TD_INDEX(keycode)];
action->state.pressed = record->event.pressed;
if (record->event.pressed) {
last_tap_time = timer_read();
process_tap_dance_action_on_each_tap(action);
active_td = action->state.finished ? 0 : keycode;
} else {
if (action->state.finished) {
process_tap_dance_action_on_reset(action);
}
}
break;
}
return true;
}
void tap_dance_task(void) {
tap_dance_action_t *action;
if (!active_td || timer_elapsed(last_tap_time) <= GET_TAPPING_TERM(active_td, &(keyrecord_t){})) return;
action = &tap_dance_actions[TD_INDEX(active_td)];
if (!action->state.interrupted) {
process_tap_dance_action_on_dance_finished(action);
}
}
void reset_tap_dance(tap_dance_state_t *state) {
active_td = 0;
process_tap_dance_action_on_reset((tap_dance_action_t *)state);
}
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