74 lines
2.0 KiB
C++
74 lines
2.0 KiB
C++
#include "modules/keyboard_state.hpp"
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#include <filesystem>
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extern "C" {
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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}
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waybar::modules::KeyboardState::KeyboardState(const std::string& id, const Json::Value& config)
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: ALabel(config, "keyboard_state", id, "{temperatureC}", 1) {
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if (config_["device-path"].isString()) {
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dev_path_ = config_["device-path"].asString();
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} else {
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dev_path_ = "";
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}
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fd_ = open(dev_path_.c_str(), O_NONBLOCK | O_CLOEXEC | O_RDONLY);
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if (fd_ < 0) {
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throw std::runtime_error("Can't open " + dev_path_);
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}
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int err = libevdev_new_from_fd(fd_, &dev_);
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if (err < 0) {
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throw std::runtime_error("Can't create libevdev device");
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}
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if (!libevdev_has_event_type(dev_, EV_LED)) {
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throw std::runtime_error("Device doesn't support LED events");
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}
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if (!libevdev_has_event_code(dev_, EV_LED, LED_NUML) || !libevdev_has_event_code(dev_, EV_LED, LED_CAPSL)) {
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throw std::runtime_error("Device doesn't support num lock or caps lock events");
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}
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thread_ = [this] {
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dp.emit();
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thread_.sleep_for(interval_);
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};
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}
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waybar::modules::KeyboardState::~KeyboardState() {
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libevdev_free(dev_);
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int err = close(fd_);
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if (err < 0) {
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// Not much we can do, so ignore it.
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}
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}
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auto waybar::modules::KeyboardState::update() -> void {
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int err = LIBEVDEV_READ_STATUS_SUCCESS;
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while (err == LIBEVDEV_READ_STATUS_SUCCESS) {
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input_event ev;
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err = libevdev_next_event(dev_, LIBEVDEV_READ_FLAG_NORMAL, &ev);
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while (err == LIBEVDEV_READ_STATUS_SYNC) {
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err = libevdev_next_event(dev_, LIBEVDEV_READ_FLAG_SYNC, &ev);
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}
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}
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if (err != -EAGAIN) {
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throw std::runtime_error("Failed to sync evdev device");
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}
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int numl = libevdev_get_event_value(dev_, EV_LED, LED_NUML);
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//int capsl = libevdev_get_event_value(dev_, EV_LED, LED_CAPSL);
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std::string text;
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if (numl) {
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text = fmt::format(format_, "num lock enabled");
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label_.set_markup(text);
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} else {
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text = fmt::format(format_, "num lock disabled");
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label_.set_markup(text);
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}
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ALabel::update();
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}
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