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/*
* Copyright 2023 jacqueline <me@jacqueline.id.au>
*
* SPDX-License-Identifier: GPL-3.0-only
*/
#pragma once
#include <stdint.h>
#include <deque>
#include <memory>
#include <set>
#include "core/lv_group.h"
#include "gpios.hpp"
#include "hal/lv_hal_indev.h"
#include "nvs.hpp"
#include "relative_wheel.hpp"
#include "touchwheel.hpp"
namespace ui {
class Scroller;
/*
* Main input device abstracting that handles turning lower-level input device
* drivers into events and LVGL inputs.
*
* As far as LVGL is concerned, this class represents an ordinary rotary
* encoder, supporting only left and right ticks, and clicking.
*/
class EncoderInput {
public:
EncoderInput(drivers::IGpios& gpios, drivers::TouchWheel& wheel);
auto Read(lv_indev_data_t* data) -> void;
auto registration() -> lv_indev_t* { return registration_; }
auto mode(drivers::NvsStorage::InputModes mode) { mode_ = mode; }
auto lock(bool l) -> void { is_locked_ = l; }
private:
lv_indev_drv_t driver_;
lv_indev_t* registration_;
drivers::IGpios& gpios_;
drivers::TouchWheel& raw_wheel_;
std::unique_ptr<drivers::RelativeWheel> relative_wheel_;
std::unique_ptr<Scroller> scroller_;
drivers::NvsStorage::InputModes mode_;
bool is_locked_;
// Every kind of distinct input that we could map to an action.
enum class Keys {
kVolumeUp,
kVolumeDown,
kTouchWheel,
kTouchWheelCenter,
kDirectionalUp,
kDirectionalRight,
kDirectionalDown,
kDirectionalLeft,
};
// Map from a Key, to the time that it was first touched in ms. If the key is
// currently released, where will be no entry.
std::unordered_map<Keys, uint64_t> touch_time_ms_;
// Set of keys that were released during the current update.
std::set<Keys> just_released_;
// Set of keys that have had an event fired for them since being pressed.
std::set<Keys> fired_;
enum class Trigger {
kNone,
// Regular short-click. Triggered on release for long-pressable keys,
// triggered on the initial press for repeatable keys.
kClick,
kLongPress,
};
enum class KeyStyle {
kRepeat,
kLongPress,
};
auto HandleKeyState(Keys key, uint64_t ms, bool clicked) -> void;
auto TriggerKey(Keys key, KeyStyle t, uint64_t ms) -> Trigger;
};
class Scroller {
public:
Scroller() : last_input_ms_(0), velocity_(0) {}
auto AddInput(uint64_t, int) -> int;
private:
uint64_t last_input_ms_;
int velocity_;
};
} // namespace ui
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