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#pragma once
#include <libudev.h>
#include <spdlog/spdlog.h>
#include <chrono>
#include <mutex>
#include <optional>
#include <string>
#include <string_view>
#include <vector>
#include "giomm/dbusproxy.h"
#include "util/backend_common.hpp"
#include "util/sleeper_thread.hpp"
#define GET_BEST_DEVICE(varname, backend, preferred_device) \
decltype((backend).devices_) __devices; \
{ \
std::scoped_lock<std::mutex> lock((backend).udev_thread_mutex_); \
__devices = (backend).devices_; \
} \
auto varname = (backend).best_device(__devices, preferred_device);
namespace waybar::util {
class BacklightDevice {
public:
BacklightDevice() = default;
BacklightDevice(std::string name, int actual, int max, bool powered);
std::string name() const;
int get_actual() const;
void set_actual(int actual);
int get_max() const;
void set_max(int max);
bool get_powered() const;
void set_powered(bool powered);
friend inline bool operator==(const BacklightDevice& lhs, const BacklightDevice& rhs) {
return lhs.name_ == rhs.name_ && lhs.actual_ == rhs.actual_ && lhs.max_ == rhs.max_;
}
private:
std::string name_;
int actual_ = 1;
int max_ = 1;
bool powered_ = true;
};
class BacklightBackend {
public:
BacklightBackend(std::chrono::milliseconds interval, std::function<void()> on_updated_cb = NOOP);
// const inline BacklightDevice *get_best_device(std::string_view preferred_device);
const BacklightDevice* get_previous_best_device();
void set_previous_best_device(const BacklightDevice* device);
void set_brightness(const std::string& preferred_device, ChangeType change_type, double step);
void set_scaled_brightness(const std::string& preferred_device, int brightness);
int get_scaled_brightness(const std::string& preferred_device);
bool is_login_proxy_initialized() const { return static_cast<bool>(login_proxy_); }
static const BacklightDevice* best_device(const std::vector<BacklightDevice>& devices,
std::string_view);
std::vector<BacklightDevice> devices_;
std::mutex udev_thread_mutex_;
private:
void set_brightness_internal(const std::string& device_name, int brightness, int max_brightness);
std::function<void()> on_updated_cb_;
std::chrono::milliseconds polling_interval_;
std::optional<BacklightDevice> previous_best_;
// thread must destruct before shared data
util::SleeperThread udev_thread_;
Glib::RefPtr<Gio::DBus::Proxy> login_proxy_;
static constexpr int EPOLL_MAX_EVENTS = 16;
};
} // namespace waybar::util
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