LibWeb/SVG: Add FilterPrimitiveStandardAttributes

Author: https://github.com/ananas-dev
Commit: de271b16fc
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/5028
Reviewed-by: https://github.com/gmta ✅

Libraries/LibWeb/SVG/SVGFilterPrimitiveStandardAttributes.h

@@ -0,0 +1,59 @@
+/*
+ * Copyright (c) 2025, Lucien Fiorini <lucienfiorini@gmail.com>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include <LibWeb/SVG/AttributeNames.h>
+#include <LibWeb/SVG/SVGElement.h>
+
+namespace Web::SVG {
+
+template<typename IncludingClass>
+class SVGFilterPrimitiveStandardAttributes {
+public:
+    virtual ~SVGFilterPrimitiveStandardAttributes() = default;
+
+    GC::Ref<SVGAnimatedLength> x()
+    {
+        return this_svg_element()->svg_animated_length_for_property(CSS::PropertyID::X);
+    }
+
+    GC::Ref<SVGAnimatedLength> y()
+    {
+        return this_svg_element()->svg_animated_length_for_property(CSS::PropertyID::Y);
+    }
+
+    GC::Ref<SVGAnimatedLength> width()
+    {
+        return this_svg_element()->svg_animated_length_for_property(CSS::PropertyID::Width);
+    }
+
+    GC::Ref<SVGAnimatedLength> height()
+    {
+        return this_svg_element()->svg_animated_length_for_property(CSS::PropertyID::Height);
+    }
+
+    GC::Ref<SVGAnimatedString> result()
+    {
+        if (!m_result_animated_string)
+            m_result_animated_string = SVGAnimatedString::create(this_svg_element()->realm(), *this_svg_element(), AttributeNames::result);
+
+        return *m_result_animated_string;
+    }
+
+protected:
+    void visit_edges(JS::Cell::Visitor& visitor)
+    {
+        visitor.visit(m_result_animated_string);
+    }
+
+private:
+    SVGElement* this_svg_element() { return static_cast<IncludingClass*>(this); }
+
+    GC::Ptr<SVGAnimatedString> m_result_animated_string;
+};
+
+}

Libraries/LibWeb/SVG/SVGFilterPrimitiveStandardAttributes.idl

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+#import <SVG/SVGAnimatedLength.idl>
+#import <SVG/SVGAnimatedString.idl>
+
+// https://www.w3.org/TR/filter-effects-1/#InterfaceSVGFilterPrimitiveStandardAttributes
+interface mixin SVGFilterPrimitiveStandardAttributes {
+    [SameObject] readonly attribute SVGAnimatedLength x;
+    [SameObject] readonly attribute SVGAnimatedLength y;
+    [SameObject] readonly attribute SVGAnimatedLength width;
+    [SameObject] readonly attribute SVGAnimatedLength height;
+    [SameObject] readonly attribute SVGAnimatedString result;
+};