88 lines
3.2 KiB
C
88 lines
3.2 KiB
C
|
// Copyright @filterpaper
|
||
|
|
// Copyright Christoph Cullmann
|
||
|
|
// SPDX-License-Identifier: GPL-2.0+
|
||
|
|
|
||
|
|
// Basic keycode filter for tap-hold keys
|
||
|
|
#define GET_TAP_KEYCODE(k) ((k) & 0xff)
|
||
|
|
|
||
|
|
// Tap-hold decision helper macros
|
||
|
|
#define IS_LAYER_TAP(k) (IS_QK_LAYER_TAP(k) && QK_LAYER_TAP_GET_LAYER(k))
|
||
|
|
#define IS_SHORTCUT(k) (IS_QK_LAYER_TAP(k) && !QK_LAYER_TAP_GET_LAYER(k))
|
||
|
|
#define IS_MOD_TAP_SHIFT(k) (IS_QK_MOD_TAP(k) && (k) & (QK_LSFT))
|
||
|
|
#define IS_MOD_TAP_CAG(k) (IS_QK_MOD_TAP(k) && (k) & (QK_LCTL|QK_LALT|QK_LGUI))
|
||
|
|
|
||
|
|
#define IS_HOMEROW(r) (r->event.key.row == 1 || r->event.key.row == 5)
|
||
|
|
#define IS_HOMEROW_SHIFT(k, r) (IS_HOMEROW(r) && IS_MOD_TAP_SHIFT(k))
|
||
|
|
#define IS_HOMEROW_CAG(k, r) (IS_HOMEROW(r) && IS_MOD_TAP_CAG(k))
|
||
|
|
|
||
|
|
#define IS_TYPING(k) ((uint8_t)(k) <= KC_Z && last_input_activity_elapsed() < QUICK_TAP_TERM)
|
||
|
|
|
||
|
|
#define IS_UNILATERAL(r, n) ( \
|
||
|
|
(r->event.key.row == 1 && 0 <= n.event.key.row && n.event.key.row <= 2) || \
|
||
|
|
(r->event.key.row == 5 && 4 <= n.event.key.row && n.event.key.row <= 6) )
|
||
|
|
|
||
|
|
#define IS_BILATERAL(r, n) ( \
|
||
|
|
(r->event.key.row == 1 && 4 <= n.event.key.row && n.event.key.row <= 6) || \
|
||
|
|
(r->event.key.row == 5 && 0 <= n.event.key.row && n.event.key.row <= 2) )
|
||
|
|
|
||
|
|
static uint_fast16_t inter_keycode;
|
||
|
|
static keyrecord_t inter_record;
|
||
|
|
|
||
|
|
bool pre_process_record_user(uint16_t keycode, keyrecord_t *record) {
|
||
|
|
static bool is_pressed[UINT8_MAX];
|
||
|
|
const uint16_t tap_keycode = GET_TAP_KEYCODE(keycode);
|
||
|
|
|
||
|
|
if (record->event.pressed) {
|
||
|
|
// Press the tap keycode if the tap-hold key follows the previous key swiftly
|
||
|
|
if ((IS_HOMEROW_CAG(keycode, record) || IS_SHORTCUT(keycode)) && IS_TYPING(inter_keycode)) {
|
||
|
|
is_pressed[tap_keycode] = true;
|
||
|
|
record->keycode = tap_keycode;
|
||
|
|
}
|
||
|
|
// Cache incoming input for in-progress and subsequent tap-hold decisions
|
||
|
|
inter_keycode = keycode;
|
||
|
|
inter_record = *record;
|
||
|
|
}
|
||
|
|
|
||
|
|
// Release the pressed tap keycode
|
||
|
|
else if (is_pressed[tap_keycode]) {
|
||
|
|
is_pressed[tap_keycode] = false;
|
||
|
|
record->keycode = tap_keycode;
|
||
|
|
}
|
||
|
|
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
bool get_hold_on_other_key_press(uint16_t keycode, keyrecord_t *record) {
|
||
|
|
// Tap the mod-tap key with an overlapping non-Shift key on the same hand
|
||
|
|
// or the shortcut key with any overlapping key
|
||
|
|
if ((IS_UNILATERAL(record, inter_record) && !IS_MOD_TAP_SHIFT(inter_keycode)) || IS_SHORTCUT(keycode)) {
|
||
|
|
record->tap.count++;
|
||
|
|
process_record(record);
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
// Activate layer hold with another key press
|
||
|
|
else return IS_LAYER_TAP(keycode);
|
||
|
|
}
|
||
|
|
|
||
|
|
bool get_permissive_hold(uint16_t keycode, keyrecord_t *record) {
|
||
|
|
// Enable Shift with a nested key press
|
||
|
|
return IS_MOD_TAP_SHIFT(keycode);
|
||
|
|
}
|
||
|
|
|
||
|
|
uint16_t get_tapping_term(uint16_t keycode, keyrecord_t *record) {
|
||
|
|
// Shorten interval for Shift
|
||
|
|
return IS_HOMEROW_SHIFT(keycode, record) ? SHIFT_TAP_TERM : TAPPING_TERM;
|
||
|
|
}
|
||
|
|
|
||
|
|
// Simplify unused magic config functions
|
||
|
|
#ifndef MAGIC_ENABLE
|
||
|
|
uint8_t mod_config(uint8_t mod) { return mod; }
|
||
|
|
uint16_t keycode_config(uint16_t keycode) { return keycode; }
|
||
|
|
#endif
|
||
|
|
|
||
|
|
// Reduce marix scanning delay
|
||
|
|
#ifndef DIRECT_PINS
|
||
|
|
void matrix_io_delay(void) { __asm__ volatile("nop\nnop\nnop\n"); }
|
||
|
|
#endif
|