From 450956f546a3609beb4f537f3ededb76797b2320 Mon Sep 17 00:00:00 2001
From: tye-exe <tye@mailbox.org>
Date: Fri, 25 Apr 2025 13:38:40 +0100
Subject: [PATCH] Opacity is used to gray out elements.

"fade_out_to_color" was replaced by "fade_out_opacity" for this purpose.
---
 crates/egui/src/style.rs | 9 ++++-----
 crates/egui/src/ui.rs    | 3 ++-
 2 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/crates/egui/src/style.rs b/crates/egui/src/style.rs
index 38d403749..6025fbdb6 100644
--- a/crates/egui/src/style.rs
+++ b/crates/egui/src/style.rs
@@ -1052,18 +1052,17 @@ impl Visuals {
         self.window_stroke
     }
 
-    /// When fading out things, we fade the colors towards this.
-    // TODO(emilk): replace with an alpha
+    /// When fading out things, we multiply the opacity by this.
     #[inline(always)]
-    pub fn fade_out_to_color(&self) -> Color32 {
-        self.widgets.noninteractive.weak_bg_fill
+    pub fn fade_out_opacity(&self) -> f32 {
+        0.5
     }
 
     /// Returned a "grayed out" version of the given color.
     #[doc(alias = "grey_out")]
     #[inline(always)]
     pub fn gray_out(&self, color: Color32) -> Color32 {
-        crate::ecolor::tint_color_towards(color, self.fade_out_to_color())
+        color.gamma_multiply(self.fade_out_opacity())
     }
 }
 
diff --git a/crates/egui/src/ui.rs b/crates/egui/src/ui.rs
index 32d6a5f37..64affddaa 100644
--- a/crates/egui/src/ui.rs
+++ b/crates/egui/src/ui.rs
@@ -521,7 +521,8 @@ impl Ui {
     pub fn disable(&mut self) {
         self.enabled = false;
         if self.is_visible() {
-            self.painter.multiply_opacity(0.5);
+            self.painter
+                .multiply_opacity(self.visuals().fade_out_opacity());
         }
     }