83 lines
2.5 KiB
C++
83 lines
2.5 KiB
C++
#include "modules/battery.hpp"
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waybar::modules::Battery::Battery(Json::Value config)
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: _config(config)
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{
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try {
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for (auto &node : fs::directory_iterator(_data_dir)) {
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if (fs::is_directory(node) && fs::exists(node / "capacity")
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&& fs::exists(node / "status") && fs::exists(node / "uevent"))
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_batteries.push_back(node);
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}
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} catch (fs::filesystem_error &e) {
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throw std::runtime_error(e.what());
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}
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if (!_batteries.size())
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throw std::runtime_error("No batteries.");
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auto fd = inotify_init();
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if (fd == -1)
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throw std::runtime_error("Unable to listen batteries.");
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for (auto &bat : _batteries)
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inotify_add_watch(fd, (bat / "uevent").c_str(), IN_ACCESS);
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// Trigger first value
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update();
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_label.set_name("battery");
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_thread = [this, fd] {
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struct inotify_event event;
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int nbytes = read(fd, &event, sizeof(event));
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if (nbytes != sizeof(event))
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return;
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Glib::signal_idle().connect_once(sigc::mem_fun(*this, &Battery::update));
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};
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}
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auto waybar::modules::Battery::update() -> void
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{
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try {
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uint16_t total = 0;
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std::string status;
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for (auto &bat : _batteries) {
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uint16_t capacity;
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std::string _status;
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std::ifstream(bat / "capacity") >> capacity;
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std::ifstream(bat / "status") >> _status;
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if (_status != "Unknown")
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status = _status;
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total += capacity;
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}
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uint16_t capacity = total / _batteries.size();
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auto format = _config["format"]
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? _config["format"].asString() : "{capacity}%";
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_label.set_text(fmt::format(format, fmt::arg("capacity", capacity),
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fmt::arg("icon", _getIcon(capacity))));
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_label.set_tooltip_text(status);
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bool charging = status == "Charging";
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if (charging)
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_label.get_style_context()->add_class("charging");
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else
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_label.get_style_context()->remove_class("charging");
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auto critical = _config["critical"] ? _config["critical"].asUInt() : 15;
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if (capacity <= critical && !charging)
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_label.get_style_context()->add_class("warning");
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else
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_label.get_style_context()->remove_class("warning");
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} catch (const std::exception& e) {
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std::cerr << e.what() << std::endl;
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}
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}
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std::string waybar::modules::Battery::_getIcon(uint16_t percentage)
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{
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if (!_config["format-icons"] || !_config["format-icons"].isArray()) return "";
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auto size = _config["format-icons"].size();
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auto idx = std::clamp(percentage / (100 / size), 0U, size - 1);
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return _config["format-icons"][idx].asString();
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}
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waybar::modules::Battery::operator Gtk::Widget &()
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{
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return _label;
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}
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