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#include QMK_KEYBOARD_H
#define _BASE 0 // Base layer
#define _SYSTEM 1 // System actions
#define _VOLUME 2 // Volume actions
#define SUPER_ALT_F4_TIMER 300 // Timeout on the super alt-f4 key
/*
The idea of this is pretty simple: base layer has four action, two of which (the outermost)
are regular keystrokes on tap, and a momentary layer switch on hold, sending you to layers 1 and 2.
The other bit of customization here is the 'Super Alt F4' which does Alt-F4, and then Enter if tapped
again SUPER_ALT_F4_TIMER miliseconds after. This lets you Alt-F4 applications, and finally quickly
double-tap it to Alt-F4+Enter to shut down the PC.
*/
bool is_alt_f4_active = false;
uint16_t alt_f4_timer = 0;
enum custom_keycodes { // Make sure have the awesome keycode ready
SUPER_ALT_F4 = SAFE_RANGE,
};
const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
// 0: Base Layer
[_BASE] = LAYOUT_all(LT(_SYSTEM, KC_F5), C(G(KC_LEFT)), C(G(KC_RIGHT)), LT(_VOLUME, KC_F7)),
// 1: System actions
[_SYSTEM] = LAYOUT_all(_______, SUPER_ALT_F4, G(KC_D), G(KC_L)),
// 2: Volume actions
[_VOLUME] = LAYOUT_all(KC_MEDIA_NEXT_TRACK, KC_AUDIO_VOL_DOWN, KC_AUDIO_VOL_UP, _______),
};
bool process_record_user(uint16_t keycode, keyrecord_t *record) {
switch (keycode) { // This will do most of the grunt work with the keycodes.
case SUPER_ALT_F4:
if (record->event.pressed) {
if (!is_alt_f4_active) {
is_alt_f4_active = true;
tap_code_16(LALT(KC_F4); // Alt-F4
} else {
tap_code(KC_ENTER); // Tap enter
}
} else {
unregister_code(KC_TAB);
}
alt_f4_timer = timer_read();
break;
}
return true;
}
void matrix_scan_user(void) {
if (is_alt_f4_active && timer_elapsed(alt_f4_timer) > SUPER_ALT_F4_TIMER) {
is_alt_f4_active = false;
}
};
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