void BrightnessControl::onBrightnessChangedFromBackend(float brightness, PowerDevil::BackendInterface::BrightnessControlType type)
{
    if (type == BackendInterface::Screen) {
        showBrightnessOSD(brightness);
        Q_EMIT brightnessChanged(brightness);
    }
}
void BrightnessControl::onBrightnessChangedFromBackend(float brightness)
{
    showBrightnessOSD(brightness);
}