Waybar/src/modules/temperature.cpp

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#include "modules/temperature.hpp"
#include <filesystem>
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waybar::modules::Temperature::Temperature(const std::string& id, const Json::Value& config)
: ALabel(config, "temperature", id, "{temperatureC}°C", 10) {
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if (config_["hwmon-path"].isString()) {
file_path_ = config_["hwmon-path"].asString();
} else if (config_["hwmon-path-abs"].isString() && config_["input-filename"].isString()) {
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file_path_ = (*std::filesystem::directory_iterator(config_["hwmon-path-abs"].asString())).path().string() + "/" + config_["input-filename"].asString();
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} else {
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auto zone = config_["thermal-zone"].isInt() ? config_["thermal-zone"].asInt() : 0;
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file_path_ = fmt::format("/sys/class/thermal/thermal_zone{}/temp", zone);
}
std::ifstream temp(file_path_);
if (!temp.is_open()) {
throw std::runtime_error("Can't open " + file_path_);
}
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thread_ = [this] {
dp.emit();
thread_.sleep_for(interval_);
};
}
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auto waybar::modules::Temperature::update() -> void {
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auto temperature = getTemperature();
uint16_t temperature_c = std::round(temperature);
uint16_t temperature_f = std::round(temperature * 1.8 + 32);
uint16_t temperature_k = std::round(temperature + 273.15);
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auto critical = isCritical(temperature_c);
auto format = format_;
if (critical) {
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format = config_["format-critical"].isString() ? config_["format-critical"].asString() : format;
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label_.get_style_context()->add_class("critical");
} else {
label_.get_style_context()->remove_class("critical");
}
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auto max_temp = config_["critical-threshold"].isInt() ? config_["critical-threshold"].asInt() : 0;
label_.set_markup(fmt::format(format,
fmt::arg("temperatureC", temperature_c),
fmt::arg("temperatureF", temperature_f),
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fmt::arg("temperatureK", temperature_k),
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fmt::arg("icon", getIcon(temperature_c, "", max_temp))));
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// Call parent update
ALabel::update();
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}
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float waybar::modules::Temperature::getTemperature() {
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std::ifstream temp(file_path_);
if (!temp.is_open()) {
throw std::runtime_error("Can't open " + file_path_);
}
std::string line;
if (temp.good()) {
getline(temp, line);
}
temp.close();
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auto temperature_c = std::strtol(line.c_str(), nullptr, 10) / 1000.0;
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return temperature_c;
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}
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bool waybar::modules::Temperature::isCritical(uint16_t temperature_c) {
return config_["critical-threshold"].isInt() &&
temperature_c >= config_["critical-threshold"].asInt();
}