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Backlight: don't reset value when failing to read 

Avoids the brightness percentage resetting to 0 on intermittent failures
This commit is contained in:
Bao Trinh 2022-04-21 22:19:05 -05:00
parent 1af7191740
commit 96746142d2
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GPG Key ID: A9B3110B4EA55E36
1 changed files with 8 additions and 5 deletions
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13
src/modules/backlight.cpp
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@ -214,17 +214,20 @@ void waybar::modules::Backlight::upsert_device(ForwardIt first, ForwardIt last,
strncmp(name, "amdgpu_bl", 9) == 0 ? "brightness" : "actual_brightness"; strncmp(name, "amdgpu_bl", 9) == 0 ? "brightness" : "actual_brightness";
const char *actual = udev_device_get_sysattr_value(dev, actual_brightness_attr); const char *actual = udev_device_get_sysattr_value(dev, actual_brightness_attr);
const int actual_int = actual == nullptr ? 0 : std::stoi(actual);
const char *max = udev_device_get_sysattr_value(dev, "max_brightness"); const char *max = udev_device_get_sysattr_value(dev, "max_brightness");
const int max_int = max == nullptr ? 0 : std::stoi(max);
auto found = auto found =
std::find_if(first, last, [name](const auto &device) { return device.name() == name; }); std::find_if(first, last, [name](const auto &device) { return device.name() == name; });
if (found != last) { if (found != last) {
found->set_actual(actual_int); if (actual != nullptr) {
found->set_max(max_int); found->set_actual(std::stoi(actual));
}
if (max != nullptr) {
found->set_max(std::stoi(max));
}
} else { } else {
const int actual_int = actual == nullptr ? 0 : std::stoi(actual);
const int max_int = max == nullptr ? 0 : std::stoi(max);
*inserter = BacklightDev{name, actual_int, max_int}; *inserter = BacklightDev{name, actual_int, max_int};
++inserter; ++inserter;
} }