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feat(backlight): added percentexp as format option

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Humans don't perceive light linearly and so an exponential curve is more
appropriate to gauge the perceived brightness of the screen.
This commit is contained in:
Narice
2022-12-06 18:40:38 +01:00
parent c5babb4c44
commit 0fdc4c11f3
1 changed files with 8 additions and 0 deletions
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src/modules/backlight.cpp
+8
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@@ -179,9 +179,17 @@ auto waybar::modules::Backlight::update() -> void {
if (best->get_powered()) { if (best->get_powered()) {
event_box_.show(); event_box_.show();
const uint8_t percent = const uint8_t percent =
best->get_max() == 0 ? 100 : round(best->get_actual() * 100.0f / best->get_max()); best->get_max() == 0 ? 100 : round(best->get_actual() * 100.0f / best->get_max());
const uint8_t percent_exp =
best->get_max() == 0
? 100
: roundf(powf((float)best->get_actual() / best->get_max(), 1.0f / 2.718f) * 100);
label_.set_markup(fmt::format(format_, fmt::arg("percent", std::to_string(percent)), label_.set_markup(fmt::format(format_, fmt::arg("percent", std::to_string(percent)),
fmt::arg("percentexp", std::to_string(percent_exp)),
fmt::arg("icon", getIcon(percent)))); fmt::arg("icon", getIcon(percent))));
getState(percent); getState(percent);
} else { } else {