91 lines
2.7 KiB
C++
91 lines
2.7 KiB
C++
#include "modules/battery.hpp"
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waybar::modules::Battery::Battery(Json::Value config)
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: config_(std::move(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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}
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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_.empty()) {
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throw std::runtime_error("No batteries.");
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}
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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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}
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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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}
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// Trigger first value
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Glib::signal_idle().connect_once(sigc::mem_fun(*this, &Battery::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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}
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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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}
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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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}
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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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}
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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()) {
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return "";
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}
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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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