qmk/modules/getreuer/mouse_turbo_click/mouse_turbo_click.c

121 lines
4.1 KiB
C

// Copyright 2022-2025 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
/**
* @file mouse_turbo_click.c
* @brief Mouse Turbo Click community module: click the mouse rapidly
*
* This module implements a "Turbo Click" button that clicks the mouse rapidly,
* implemented using mouse keys and a periodic callback function:
*
* * Pressing and holding the Turbo Click button sends rapid mouse clicks,
* about 12 clicks per second.
*
* * Quickly double tapping the Turbo Click button "locks" it. Rapid mouse
* clicks are sent until the Turbo Click button is tapped again.
*
* For full documentation, see
* <https://getreuer.info/posts/keyboards/mouse-turbo-click>
*/
#include "quantum.h"
ASSERT_COMMUNITY_MODULES_MIN_API_VERSION(1, 0, 0);
// The keycode to be repeatedly clicked, `MS_BTN1` mouse button 1 by default.
#ifndef MOUSE_TURBO_CLICK_KEY
#define MOUSE_TURBO_CLICK_KEY MS_BTN1
#endif // MOUSE_TURBO_CLICK_KEY
// The click period in milliseconds. For instance a period of 200 ms would be 5
// clicks per second. Smaller period implies faster clicking.
//
// WARNING: The keyboard might become unresponsive if the period is too small.
// I suggest setting this no smaller than 10.
#ifndef MOUSE_TURBO_CLICK_PERIOD
#define MOUSE_TURBO_CLICK_PERIOD 80
#endif // MOUSE_TURBO_CLICK_PERIOD
static deferred_token click_token = INVALID_DEFERRED_TOKEN;
static bool click_registered = false;
// Callback used with deferred execution. It alternates between registering and
// unregistering (pressing and releasing) `MOUSE_TURBO_CLICK_KEY`.
static uint32_t turbo_click_callback(uint32_t trigger_time, void* cb_arg) {
if (click_registered) {
unregister_code16(MOUSE_TURBO_CLICK_KEY);
click_registered = false;
} else {
click_registered = true;
register_code16(MOUSE_TURBO_CLICK_KEY);
}
return MOUSE_TURBO_CLICK_PERIOD / 2; // Execute again in half a period.
}
// Starts Turbo Click, begins the `turbo_click_callback()` callback.
static void turbo_click_start(void) {
if (click_token == INVALID_DEFERRED_TOKEN) {
uint32_t next_delay_ms = turbo_click_callback(0, NULL);
click_token = defer_exec(next_delay_ms, turbo_click_callback, NULL);
}
}
// Stops Turbo Click, cancels the callback.
static void turbo_click_stop(void) {
if (click_token != INVALID_DEFERRED_TOKEN) {
cancel_deferred_exec(click_token);
click_token = INVALID_DEFERRED_TOKEN;
if (click_registered) {
// If `MOUSE_TURBO_CLICK_KEY` is currently registered, release it.
unregister_code16(MOUSE_TURBO_CLICK_KEY);
click_registered = false;
}
}
}
bool process_record_mouse_turbo_click(uint16_t keycode, keyrecord_t* record) {
static bool locked = false;
static bool tapped = false;
static uint16_t tap_timer = 0;
if (keycode == MOUSE_TURBO_CLICK) {
if (record->event.pressed) { // Turbo Click key was pressed.
if (tapped && !timer_expired(record->event.time, tap_timer)) {
// If the key was recently tapped, lock turbo click.
locked = true;
} else if (locked) {
// Otherwise if currently locked, unlock and stop.
locked = false;
tapped = false;
turbo_click_stop();
return false;
}
// Set that the first tap occurred in a potential double tap.
tapped = true;
tap_timer = record->event.time + TAPPING_TERM;
turbo_click_start();
} else if (!locked) {
// If not currently locked, stop on key release.
turbo_click_stop();
}
return false;
} else {
// On an event with any other key, reset the double tap state.
tapped = false;
return true;
}
}