4 files changed, 20 insertions, 12 deletions
diff --git a/Userland/Libraries/LibGfx/Filters/ColorFilter.h b/Userland/Libraries/LibGfx/Filters/ColorFilter.h
index 248eb8113c..9a5623fb45 100644
--- a/Userland/Libraries/LibGfx/Filters/ColorFilter.h
+++ b/Userland/Libraries/LibGfx/Filters/ColorFilter.h
@@ -12,8 +12,18 @@ namespace Gfx {
 
 class ColorFilter : public Filter {
 public:
+    ColorFilter(float amount = 1.0f)
+        : m_amount(amount)
+    {
+    }
+
     virtual ~ColorFilter() = default;
 
+    virtual bool amount_handled_in_filter() const
+    {
+        return false;
+    }
+
     virtual void apply(Bitmap& target_bitmap, IntRect const& target_rect, Bitmap const& source_bitmap, IntRect const& source_rect) override
     {
         VERIFY(source_rect.size() == target_rect.size());
@@ -30,15 +40,14 @@ public:
                 auto source_pixel = source_bitmap.get_pixel(source_x, source_y);
                 auto target_color = convert_color(source_pixel);
 
-                target_bitmap.set_pixel(target_x, target_y, target_color);
+                target_bitmap.set_pixel(target_x, target_y, m_amount < 1.0f && !amount_handled_in_filter() ? source_pixel.mixed_with(target_color, m_amount) : target_color);
             }
         }
     }
 
 protected:
-    ColorFilter() = default;
-
     virtual Color convert_color(Color) = 0;
+    float m_amount { 1.0f };
 };
 
 }
diff --git a/Userland/Libraries/LibGfx/Filters/GrayscaleFilter.h b/Userland/Libraries/LibGfx/Filters/GrayscaleFilter.h
index 59c32f04f3..64050b2578 100644
--- a/Userland/Libraries/LibGfx/Filters/GrayscaleFilter.h
+++ b/Userland/Libraries/LibGfx/Filters/GrayscaleFilter.h
@@ -13,7 +13,7 @@ namespace Gfx {
 
 class GrayscaleFilter : public ColorFilter {
 public:
-    GrayscaleFilter() = default;
+    using ColorFilter::ColorFilter;
     virtual ~GrayscaleFilter() = default;
 
     virtual StringView class_name() const override { return "GrayscaleFilter"sv; }
diff --git a/Userland/Libraries/LibGfx/Filters/InvertFilter.h b/Userland/Libraries/LibGfx/Filters/InvertFilter.h
index d0b2251bb7..991070fac7 100644
--- a/Userland/Libraries/LibGfx/Filters/InvertFilter.h
+++ b/Userland/Libraries/LibGfx/Filters/InvertFilter.h
@@ -13,7 +13,7 @@ namespace Gfx {
 
 class InvertFilter : public ColorFilter {
 public:
-    InvertFilter() = default;
+    using ColorFilter::ColorFilter;
     virtual ~InvertFilter() = default;
 
     virtual StringView class_name() const override { return "InvertFilter"sv; }
diff --git a/Userland/Libraries/LibGfx/Filters/SepiaFilter.h b/Userland/Libraries/LibGfx/Filters/SepiaFilter.h
index 9b94a9e8e0..86ca152cd0 100644
--- a/Userland/Libraries/LibGfx/Filters/SepiaFilter.h
+++ b/Userland/Libraries/LibGfx/Filters/SepiaFilter.h
@@ -15,19 +15,18 @@ namespace Gfx {
 
 class SepiaFilter : public ColorFilter {
 public:
-    SepiaFilter(float amount = 1.0f)
-        : m_amount(amount)
-    {
-    }
+    using ColorFilter::ColorFilter;
     virtual ~SepiaFilter() = default;
 
     virtual StringView class_name() const override { return "SepiaFilter"sv; }
 
+    virtual bool amount_handled_in_filter() const override
+    {
+        return true;
+    }
+
 protected:
     Color convert_color(Color original) override { return original.sepia(m_amount); };
-
-private:
-    float m_amount;
 };
 
 }