From 0fdc4c11f3eab5b97c42116f69ac7656d8d3e194 Mon Sep 17 00:00:00 2001
From: Narice <narice@tutanota.com>
Date: Tue, 6 Dec 2022 18:40:38 +0100
Subject: [PATCH 1/2] feat(backlight): added percentexp as format option

Humans don't perceive light linearly and so an exponential curve is more
appropriate to gauge the perceived brightness of the screen.
---
 src/modules/backlight.cpp | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/modules/backlight.cpp b/src/modules/backlight.cpp
index aa734a4f..bf3ae226 100644
--- a/src/modules/backlight.cpp
+++ b/src/modules/backlight.cpp
@@ -179,9 +179,17 @@ auto waybar::modules::Backlight::update() -> void {
 
     if (best->get_powered()) {
       event_box_.show();
+
       const uint8_t percent =
           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)),
+                                    fmt::arg("percentexp", std::to_string(percent_exp)),
                                     fmt::arg("icon", getIcon(percent))));
       getState(percent);
     } else {

From dbb8a881be2b44845a3dbff8cb3e10a66ecbc902 Mon Sep 17 00:00:00 2001
From: Narice <narice@tutanota.com>
Date: Tue, 6 Dec 2022 19:22:21 +0100
Subject: [PATCH 2/2] feat(backlight): Added icon_exp and changed syntax

changed syntax of percentexp to percent_exp for readability
---
 src/modules/backlight.cpp | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/modules/backlight.cpp b/src/modules/backlight.cpp
index bf3ae226..2df0dc1f 100644
--- a/src/modules/backlight.cpp
+++ b/src/modules/backlight.cpp
@@ -189,8 +189,9 @@ auto waybar::modules::Backlight::update() -> void {
               : 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)),
-                                    fmt::arg("percentexp", std::to_string(percent_exp)),
-                                    fmt::arg("icon", getIcon(percent))));
+                                    fmt::arg("percent_exp", std::to_string(percent_exp)),
+                                    fmt::arg("icon", getIcon(percent)),
+                                    fmt::arg("icon_exp", getIcon(percent_exp))));
       getState(percent);
     } else {
       event_box_.hide();