From 04bda9f443a2ab8ac21ce3efe762bd1a907dc248 Mon Sep 17 00:00:00 2001
From: Lars Niesen <lars.niesen@mailbox.org>
Date: Tue, 24 Sep 2024 21:41:54 +0200
Subject: [PATCH] Backlight: Add minimum brightness

As currently it is possible to turn the brightness to zero which may not
be desirable, this patch add a configurable brightness check.
---
 src/modules/backlight.cpp | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/modules/backlight.cpp b/src/modules/backlight.cpp
index 4ae511eb..6bfe8cee 100644
--- a/src/modules/backlight.cpp
+++ b/src/modules/backlight.cpp
@@ -112,6 +112,14 @@ bool waybar::modules::Backlight::handleScroll(GdkEventScroll *e) {
     step = config_["scroll-step"].asDouble();
   }
 
+  double min_brightness = 10;
+  if (config_["min-brightness"].isDouble()) {
+    min_brightness = config_["min-brightness"].asDouble();
+  }
+  if (backend.get_scaled_brightness(preferred_device_) <= min_brightness &&
+      ct == util::ChangeType::Decrease) {
+    return true;
+  }
   backend.set_brightness(preferred_device_, ct, step);
 
   return true;