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Merge pull request #1996 from Kuruyia/feat/brightness-control

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Closes https://github.com/Alexays/Waybar/issues/1411
This commit is contained in:
Alex
2023-02-09 13:24:35 +01:00
committed by GitHub
parent a6eaaad97f 973aa09f8b
commit 9049de583e
3 changed files with 93 additions and 2 deletions
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77
src/modules/backlight.cpp
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@ -106,6 +106,15 @@ waybar::modules::Backlight::Backlight(const std::string &id, const Json::Value &
dp.emit();
}
// Set up scroll handler
event_box_.add_events(Gdk::SCROLL_MASK | Gdk::SMOOTH_SCROLL_MASK);
event_box_.signal_scroll_event().connect(sigc::mem_fun(*this, &Backlight::handleScroll));
// Connect to the login interface
login_proxy_ = Gio::DBus::Proxy::create_for_bus_sync(
Gio::DBus::BusType::BUS_TYPE_SYSTEM, "org.freedesktop.login1",
"/org/freedesktop/login1/session/self", "org.freedesktop.login1.Session");
udev_thread_ = [this] {
std::unique_ptr<udev, UdevDeleter> udev{udev_new()};
check_nn(udev.get(), "Udev new failed");
@ -264,3 +273,71 @@ void waybar::modules::Backlight::enumerate_devices(ForwardIt first, ForwardIt la
upsert_device(first, last, inserter, dev.get());
}
}
bool waybar::modules::Backlight::handleScroll(GdkEventScroll *e) {
// Check if the user has set a custom command for scrolling
if (config_["on-scroll-up"].isString() || config_["on-scroll-down"].isString()) {
return AModule::handleScroll(e);
}
// Fail fast if the proxy could not be initialized
if (!login_proxy_) {
return true;
}
// Check scroll direction
auto dir = AModule::getScrollDir(e);
if (dir == SCROLL_DIR::NONE) {
return true;
}
if (config_["reverse-scrolling"].asBool()) {
if (dir == SCROLL_DIR::UP) {
dir = SCROLL_DIR::DOWN;
} else if (dir == SCROLL_DIR::DOWN) {
dir = SCROLL_DIR::UP;
}
}
// Get scroll step
double step = 1;
if (config_["scroll-step"].isDouble()) {
step = config_["scroll-step"].asDouble();
}
// Get the best device
decltype(devices_) devices;
{
std::scoped_lock<std::mutex> lock(udev_thread_mutex_);
devices = devices_;
}
const auto best = best_device(devices.cbegin(), devices.cend(), preferred_device_);
if (best == nullptr) {
return true;
}
// Compute the absolute step
const auto abs_step = static_cast<int>(round(step * best->get_max() / 100.0f));
// Compute the new value
int new_value = best->get_actual();
if (dir == SCROLL_DIR::UP) {
new_value += abs_step;
} else if (dir == SCROLL_DIR::DOWN) {
new_value -= abs_step;
}
// Clamp the value
new_value = std::clamp(new_value, 0, best->get_max());
// Set the new value
auto call_args = Glib::VariantContainerBase(
g_variant_new("(ssu)", "backlight", std::string(best->name()).c_str(), new_value));
login_proxy_->call_sync("SetBrightness", call_args);
return true;
}