68 lines
2.6 KiB
C
68 lines
2.6 KiB
C
/*
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* Copyright 2022 Paul Ewing
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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// The key_repeater_config_t type holds user configurable options set when
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// allocating a new key repeater.
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struct key_repeater_config_t {
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// The key code that will be repeatedly registered
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int key;
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// The minimum amount of time to press down the key when registered
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const uint32_t key_duration_min;
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// The maximum amount of time to press down the key when registered
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const uint32_t key_duration_max;
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// The minimum amount of time to wait between registering key presses
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const uint32_t wait_duration_min;
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// The maximum amount of time to wait between registering key presses
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const uint32_t wait_duration_max;
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};
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// The key_repeater_t type represents a key repeater. This is similar to the
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// "Rapid fire" feature on many game controllers. The intention behind this is
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// to periodically send a key code while the user is pressing a key.
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//
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// The duration of the key press as well as the time between key presses is
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// slightly randomized by design. This is to simulate more realistic human
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// behavior. By setting the minimum and maximum duration fields to the same
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// value in the configuration, this randomization can be disabled.
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//
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// This type is intentionally opaque to avoid the user setting internal fields
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// directly. It must be allocated and destroyed using the kr_new() and
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// kr_free() functions respectively.
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struct key_repeater_t;
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// Allocate a new key repeater.
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struct key_repeater_t* kr_new(struct key_repeater_config_t* cfg);
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// Release an allocated key repeater.
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void kr_free(struct key_repeater_t** kr);
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// Enable the key repeater such that it will start periodically registering the
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// configured key code.
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void kr_enable(struct key_repeater_t* kr);
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// Disable the key repeater such that it will stop periodically registering the
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// configured key code.
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void kr_disable(struct key_repeater_t* kr);
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// Poll the key repeater to execute, tyically called from matrix_scan_user().
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void kr_poll(struct key_repeater_t* kr);
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