Waybar/src/modules/temperature.cpp

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#include "modules/temperature.hpp"
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#include <filesystem>
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#if defined(__FreeBSD__)
#include <sys/sysctl.h>
#endif
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waybar::modules::Temperature::Temperature(const std::string& id, const Json::Value& config)
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: ALabel(config, "temperature", id, "{temperatureC}°C", 10) {
#if defined(__FreeBSD__)
// try to read sysctl?
#else
auto& hwmon_path = config_["hwmon-path"];
if (hwmon_path.isString()) {
file_path_ = hwmon_path.asString();
} else if (hwmon_path.isArray()) {
// if hwmon_path is an array, loop to find first valid item
for (auto& item : hwmon_path) {
auto path = item.asString();
if (std::filesystem::exists(path)) {
file_path_ = path;
break;
}
}
} 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_);
}
#endif
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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");
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} else {
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label_.get_style_context()->remove_class("critical");
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}
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if (format.empty()) {
event_box_.hide();
return;
} else {
event_box_.show();
}
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auto max_temp = config_["critical-threshold"].isInt() ? config_["critical-threshold"].asInt() : 0;
label_.set_markup(fmt::format(fmt::runtime(format), fmt::arg("temperatureC", temperature_c),
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fmt::arg("temperatureF", temperature_f),
fmt::arg("temperatureK", temperature_k),
fmt::arg("icon", getIcon(temperature_c, "", max_temp))));
if (tooltipEnabled()) {
std::string tooltip_format = "{temperatureC}°C";
if (config_["tooltip-format"].isString()) {
tooltip_format = config_["tooltip-format"].asString();
}
label_.set_tooltip_text(fmt::format(
fmt::runtime(tooltip_format), fmt::arg("temperatureC", temperature_c),
fmt::arg("temperatureF", temperature_f), fmt::arg("temperatureK", temperature_k)));
}
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// Call parent update
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ALabel::update();
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}
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float waybar::modules::Temperature::getTemperature() {
#if defined(__FreeBSD__)
int temp;
size_t size = sizeof temp;
auto zone = config_["thermal-zone"].isInt() ? config_["thermal-zone"].asInt() : 0;
auto sysctl_thermal = fmt::format("hw.acpi.thermal.tz{}.temperature", zone);
if (sysctlbyname("hw.acpi.thermal.tz0.temperature", &temp, &size, NULL, 0) != 0) {
throw std::runtime_error(
"sysctl hw.acpi.thermal.tz0.temperature or dev.cpu.0.temperature failed");
}
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auto temperature_c = ((float)temp - 2732) / 10;
return temperature_c;
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#else // Linux
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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;
#endif
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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();
}