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72 lines
1.9 KiB
72 lines
1.9 KiB
/*
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* Copyright 2024 jacqueline <me@jacqueline.id.au>
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*
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* SPDX-License-Identifier: GPL-3.0-only
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*/
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#include "input_trigger.hpp"
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#include <sys/_stdint.h>
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#include <cstdint>
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#include "esp_log.h"
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#include "esp_timer.h"
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namespace input {
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Trigger::Trigger() : touch_time_ms_(), times_fired_(0) {}
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auto Trigger::update(bool is_pressed) -> State {
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// Bail out early if we're in a steady-state of not pressed.
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if (!is_pressed && !touch_time_ms_) {
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return State::kNone;
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}
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uint64_t now_ms = esp_timer_get_time() / 1000;
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// Initial press of this key: record the current time, and report that we
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// haven't triggered yet.
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if (is_pressed && !touch_time_ms_) {
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touch_time_ms_ = now_ms;
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times_fired_ = 0;
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return State::kNone;
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}
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// The key was released. If there were no long-press events fired during the
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// press, then this was a standard click.
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if (!is_pressed && touch_time_ms_) {
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touch_time_ms_.reset();
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if (times_fired_ == 0) {
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return State::kClick;
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} else {
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return State::kNone;
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}
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}
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// Now the more complicated case: the user is continuing to press the button.
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if (times_fired_ == 0) {
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// We haven't fired yet, so we wait for the long-press event.
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if (now_ms - *touch_time_ms_ >= kLongPressDelayMs) {
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times_fired_++;
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return State::kLongPress;
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}
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} else {
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// We've already fired at least once. How long has the user been holding
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// the key for?
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uint64_t time_since_long_press =
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now_ms - (*touch_time_ms_ + kLongPressDelayMs);
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// How many times should we have fired?
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// 1 initial fire (for the long-press), plus one additional fire every
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// kRepeatDelayMs since the long-press event.
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uint16_t expected_times_fired =
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1 + (time_since_long_press / kRepeatDelayMs);
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if (times_fired_ < expected_times_fired) {
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times_fired_++;
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return State::kRepeatPress;
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}
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}
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return State::kNone;
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}
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} // namespace input
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