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Disable backlight module if no backlight found

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This commit is contained in:
Ian Hattendorf 2019-02-28 19:50:57 -07:00
parent 0271e9bc1a
commit 39de8e544c
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GPG Key ID: BE8B1B445E06437D
1 changed files with 12 additions and 16 deletions
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28
src/modules/backlight.cpp
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@ -104,6 +104,18 @@ waybar::modules::Backlight::Backlight(const std::string &name,
config["device"].isString() ? config["device"].asString() : "") {
label_.set_name("backlight");
// Get initial state
{
std::unique_ptr<udev, UdevDeleter> udev_check{udev_new()};
check_nn(udev_check.get(), "Udev check new failed");
enumerate_devices(devices_.begin(), devices_.end(),
std::back_inserter(devices_), udev_check.get());
if (devices_.empty()) {
throw std::runtime_error("No backlight found");
}
dp.emit();
}
udev_thread_ = [this] {
std::unique_ptr<udev, UdevDeleter> udev{udev_new()};
check_nn(udev.get(), "Udev new failed");
@ -129,22 +141,6 @@ waybar::modules::Backlight::Backlight(const std::string &name,
"epoll_ctl failed: {}");
epoll_event events[EPOLL_MAX_EVENTS];
// Get initial state
{
decltype(devices_) devices;
{
std::scoped_lock<std::mutex> lock(udev_thread_mutex_);
devices = devices_;
}
enumerate_devices(devices.begin(), devices.end(),
std::back_inserter(devices), udev.get());
{
std::scoped_lock<std::mutex> lock(udev_thread_mutex_);
devices_ = devices;
}
dp.emit();
}
while (udev_thread_.isRunning()) {
const int event_count =
epoll_wait(epoll_fd.get(), events, EPOLL_MAX_EVENTS,