2 files changed, 19 insertions, 0 deletions
diff --git a/Userland/Libraries/LibGfx/Bitmap.cpp b/Userland/Libraries/LibGfx/Bitmap.cpp
index 35ba62d702..56619440b9 100644
--- a/Userland/Libraries/LibGfx/Bitmap.cpp
+++ b/Userland/Libraries/LibGfx/Bitmap.cpp
@@ -608,4 +608,21 @@ bool Bitmap::visually_equals(Bitmap const& other) const
     return true;
 }
 
+Optional<Color> Bitmap::solid_color(u8 alpha_threshold) const
+{
+    Optional<Color> color;
+    for (auto y = 0; y < height(); ++y) {
+        for (auto x = 0; x < width(); ++x) {
+            auto const& pixel = get_pixel(x, y);
+            if (has_alpha_channel() && pixel.alpha() <= alpha_threshold)
+                continue;
+            if (!color.has_value())
+                color = pixel;
+            else if (pixel != color)
+                return {};
+        }
+    }
+    return color;
+}
+
 }
diff --git a/Userland/Libraries/LibGfx/Bitmap.h b/Userland/Libraries/LibGfx/Bitmap.h
index 968ab77087..f556a25f52 100644
--- a/Userland/Libraries/LibGfx/Bitmap.h
+++ b/Userland/Libraries/LibGfx/Bitmap.h
@@ -240,6 +240,8 @@ public:
 
     [[nodiscard]] bool visually_equals(Bitmap const&) const;
 
+    [[nodiscard]] Optional<Color> solid_color(u8 alpha_threshold = 0) const;
+
 private:
     Bitmap(BitmapFormat, IntSize const&, int, BackingStore const&);
     Bitmap(BitmapFormat, IntSize const&, int, size_t pitch, void*);