From dd0cdf4724f4d67bbe88b7aa81e60bf2476d8851 Mon Sep 17 00:00:00 2001
From: nathbrow <nathan_brown@selinc.com>
Date: Thu, 17 Jul 2025 14:45:22 -0700
Subject: [PATCH] Apply exclusion to grayscale filters as well

(cherry picked from commit e0b04a11f02e6188e364ea26de96944d9927291a)
---
 src/Greenshot.Editor/Drawing/DrawableContainer.cs       | 2 +-
 src/Greenshot.Editor/Drawing/Filters/GrayscaleFilter.cs | 4 ++++
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/Greenshot.Editor/Drawing/DrawableContainer.cs b/src/Greenshot.Editor/Drawing/DrawableContainer.cs
index 9776d995d..08371753b 100644
--- a/src/Greenshot.Editor/Drawing/DrawableContainer.cs
+++ b/src/Greenshot.Editor/Drawing/DrawableContainer.cs
@@ -396,7 +396,7 @@ namespace Greenshot.Editor.Drawing
 
         public bool HasFilters => Filters.Count > 0;
 
-        public bool IsAreaHighlightContainer => Filters.Any(f => f is BrightnessFilter) && Filters.Any(f => f is BlurFilter);
+        public bool IsAreaHighlightContainer => Filters.Any(f => f.Invert && (f is BrightnessFilter || f is BlurFilter || f is GrayscaleFilter));
 
         public abstract void Draw(Graphics graphics, RenderMode renderMode);
 
diff --git a/src/Greenshot.Editor/Drawing/Filters/GrayscaleFilter.cs b/src/Greenshot.Editor/Drawing/Filters/GrayscaleFilter.cs
index b382bd1d5..0eeaa76bd 100644
--- a/src/Greenshot.Editor/Drawing/Filters/GrayscaleFilter.cs
+++ b/src/Greenshot.Editor/Drawing/Filters/GrayscaleFilter.cs
@@ -55,6 +55,10 @@ namespace Greenshot.Editor.Drawing.Filters
             {
                 graphics.SetClip(applyRect);
                 graphics.ExcludeClip(rect);
+                foreach (NativeRect area in areasToExcludeFromFilters)
+                {
+                    graphics.ExcludeClip(area);
+                }
             }
 
             ColorMatrix grayscaleMatrix = new ColorMatrix(new[]