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/*
* Copyright 2022 Paul Ewing
*
* 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/>.
*/
#pragma once
// The key_repeater_config_t type holds user configurable options set when
// allocating a new key repeater.
struct key_repeater_config_t {
// The key code that will be repeatedly registered
int key;
// The minimum amount of time to press down the key when registered
const uint32_t key_duration_min;
// The maximum amount of time to press down the key when registered
const uint32_t key_duration_max;
// The minimum amount of time to wait between registering key presses
const uint32_t wait_duration_min;
// The maximum amount of time to wait between registering key presses
const uint32_t wait_duration_max;
};
// The key_repeater_t type represents a key repeater. This is similar to the
// "Rapid fire" feature on many game controllers. The intention behind this is
// to periodically send a key code while the user is pressing a key.
//
// The duration of the key press as well as the time between key presses is
// slightly randomized by design. This is to simulate more realistic human
// behavior. By setting the minimum and maximum duration fields to the same
// value in the configuration, this randomization can be disabled.
//
// This type is intentionally opaque to avoid the user setting internal fields
// directly. It must be allocated and destroyed using the kr_new() and
// kr_free() functions respectively.
struct key_repeater_t;
// Allocate a new key repeater.
struct key_repeater_t* kr_new(struct key_repeater_config_t* cfg);
// Release an allocated key repeater.
void kr_free(struct key_repeater_t** kr);
// Enable the key repeater such that it will start periodically registering the
// configured key code.
void kr_enable(struct key_repeater_t* kr);
// Disable the key repeater such that it will stop periodically registering the
// configured key code.
void kr_disable(struct key_repeater_t* kr);
// Poll the key repeater to execute, tyically called from matrix_scan_user().
void kr_poll(struct key_repeater_t* kr);
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