LibWeb/SVG: Add FEBlendElement

Author: https://github.com/ananas-dev
Commit: f8b12614df
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/5028
Reviewed-by: https://github.com/gmta ✅

Libraries/LibWeb/SVG/AttributeNames.h

@@ -49,6 +49,7 @@ namespace Web::SVG::AttributeNames {
     __ENUMERATE_SVG_ATTRIBUTE(markerWidth, "markerWidth")                 \
     __ENUMERATE_SVG_ATTRIBUTE(maskContentUnits, "maskContentUnits")       \
     __ENUMERATE_SVG_ATTRIBUTE(maskUnits, "maskUnits")                     \
+    __ENUMERATE_SVG_ATTRIBUTE(mode, "mode")                               \
     __ENUMERATE_SVG_ATTRIBUTE(numOctaves, "numOctaves")                   \
     __ENUMERATE_SVG_ATTRIBUTE(offset, "offset")                           \
     __ENUMERATE_SVG_ATTRIBUTE(opacity, "opacity")                         \

Libraries/LibWeb/SVG/SVGFEBlendElement.cpp

@@ -0,0 +1,58 @@
+/*
+ * Copyright (c) 2025, Lucien Fiorini <lucienfiorini@gmail.com>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#include <LibWeb/Bindings/SVGFEBlendElementPrototype.h>
+#include <LibWeb/CSS/Parser/Parser.h>
+#include <LibWeb/Layout/Node.h>
+#include <LibWeb/SVG/SVGAnimatedEnumeration.h>
+#include <LibWeb/SVG/SVGFEBlendElement.h>
+
+namespace Web::SVG {
+
+GC_DEFINE_ALLOCATOR(SVGFEBlendElement);
+
+SVGFEBlendElement::SVGFEBlendElement(DOM::Document& document, DOM::QualifiedName qualified_name)
+    : SVGElement(document, qualified_name)
+{
+}
+
+void SVGFEBlendElement::initialize(JS::Realm& realm)
+{
+    Base::initialize(realm);
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(SVGFEBlendElement);
+}
+
+void SVGFEBlendElement::visit_edges(Cell::Visitor& visitor)
+{
+    Base::visit_edges(visitor);
+    SVGFilterPrimitiveStandardAttributes::visit_edges(visitor);
+    visitor.visit(m_in1);
+    visitor.visit(m_in2);
+}
+
+GC::Ref<SVGAnimatedString> SVGFEBlendElement::in1()
+{
+    if (!m_in1)
+        m_in1 = SVGAnimatedString::create(realm(), *this, AttributeNames::in);
+
+    return *m_in1;
+}
+
+GC::Ref<SVGAnimatedString> SVGFEBlendElement::in2()
+{
+    if (!m_in2)
+        m_in2 = SVGAnimatedString::create(realm(), *this, AttributeNames::in2);
+
+    return *m_in2;
+}
+
+GC::Ref<SVGAnimatedEnumeration> SVGFEBlendElement::mode() const
+{
+    // FIXME: Resolve the actual value from AttributeName::mode.
+    return SVGAnimatedEnumeration::create(realm(), 1);
+}
+
+}

Libraries/LibWeb/SVG/SVGFEBlendElement.h

@@ -0,0 +1,39 @@
+/*
+ * Copyright (c) 2025, Lucien Fiorini <lucienfiorini@gmail.com>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include <LibWeb/SVG/AttributeParser.h>
+#include <LibWeb/SVG/SVGAnimatedLength.h>
+#include <LibWeb/SVG/SVGElement.h>
+#include <LibWeb/SVG/SVGFilterPrimitiveStandardAttributes.h>
+
+namespace Web::SVG {
+
+class SVGFEBlendElement final
+    : public SVGElement
+    , public SVGFilterPrimitiveStandardAttributes<SVGFEBlendElement> {
+    WEB_PLATFORM_OBJECT(SVGFEBlendElement, SVGElement);
+    GC_DECLARE_ALLOCATOR(SVGFEBlendElement);
+
+public:
+    virtual ~SVGFEBlendElement() override = default;
+
+    GC::Ref<SVGAnimatedString> in1();
+    GC::Ref<SVGAnimatedString> in2();
+    GC::Ref<SVGAnimatedEnumeration> mode() const;
+
+private:
+    SVGFEBlendElement(DOM::Document&, DOM::QualifiedName);
+
+    virtual void initialize(JS::Realm&) override;
+    virtual void visit_edges(Cell::Visitor&) override;
+
+    GC::Ptr<SVGAnimatedString> m_in1;
+    GC::Ptr<SVGAnimatedString> m_in2;
+};
+
+}

Libraries/LibWeb/SVG/SVGFEBlendElement.idl

@@ -0,0 +1,33 @@
+#import <SVG/SVGAnimatedEnumeration.idl>
+#import <SVG/SVGAnimatedString.idl>
+#import <SVG/SVGFilterPrimitiveStandardAttributes.idl>
+
+// https://www.w3.org/TR/filter-effects-1/#InterfaceSVGFEBlendElement
+[Exposed=Window]
+interface SVGFEBlendElement : SVGElement {
+
+  // Blend Mode Types
+    const unsigned short SVG_FEBLEND_MODE_UNKNOWN = 0;
+    const unsigned short SVG_FEBLEND_MODE_NORMAL = 1;
+    const unsigned short SVG_FEBLEND_MODE_MULTIPLY = 2;
+    const unsigned short SVG_FEBLEND_MODE_SCREEN = 3;
+    const unsigned short SVG_FEBLEND_MODE_DARKEN = 4;
+    const unsigned short SVG_FEBLEND_MODE_LIGHTEN = 5;
+    const unsigned short SVG_FEBLEND_MODE_OVERLAY = 6;
+    const unsigned short SVG_FEBLEND_MODE_COLOR_DODGE = 7;
+    const unsigned short SVG_FEBLEND_MODE_COLOR_BURN = 8;
+    const unsigned short SVG_FEBLEND_MODE_HARD_LIGHT = 9;
+    const unsigned short SVG_FEBLEND_MODE_SOFT_LIGHT = 10;
+    const unsigned short SVG_FEBLEND_MODE_DIFFERENCE = 11;
+    const unsigned short SVG_FEBLEND_MODE_EXCLUSION = 12;
+    const unsigned short SVG_FEBLEND_MODE_HUE = 13;
+    const unsigned short SVG_FEBLEND_MODE_SATURATION = 14;
+    const unsigned short SVG_FEBLEND_MODE_COLOR = 15;
+    const unsigned short SVG_FEBLEND_MODE_LUMINOSITY = 16;
+
+    readonly attribute SVGAnimatedString in1;
+    readonly attribute SVGAnimatedString in2;
+    readonly attribute SVGAnimatedEnumeration mode;
+};
+
+SVGFEBlendElement includes SVGFilterPrimitiveStandardAttributes;

Libraries/LibWeb/SVG/TagNames.h

@@ -17,6 +17,7 @@ namespace Web::SVG::TagNames {
     __ENUMERATE_SVG_TAG(defs)           \
     __ENUMERATE_SVG_TAG(desc)           \
     __ENUMERATE_SVG_TAG(ellipse)        \
+    __ENUMERATE_SVG_TAG(feBlend)        \
     __ENUMERATE_SVG_TAG(feFlood)        \
     __ENUMERATE_SVG_TAG(filter)         \
     __ENUMERATE_SVG_TAG(foreignObject)  \