LibWeb: Parse font-variant-alternates functions

Author: https://github.com/Calme1709 Commit: https://github.com/LadybirdBrowser/ladybird/commit/e6669482e69 Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/8034 Reviewed-by: https://github.com/AtkinsSJ ✅
2026-04-27 10:07:15 +02:00 · 2026-01-15 20:16:31 +13:00 · 2026-02-20 22:02:55 +00:00
parent 1be9f1ae9d
commit e6669482e6
14 changed files with 366 additions and 112 deletions
--- a/Libraries/LibWeb/CSS/StyleValues/FontVariantAlternatesFunctionStyleValue.cpp
+++ b/Libraries/LibWeb/CSS/StyleValues/FontVariantAlternatesFunctionStyleValue.cpp
@@ -0,0 +1,64 @@
+/*
+ * Copyright (c) 2026, Callum Law <callumlaw1709@outlook.com>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#include "FontVariantAlternatesFunctionStyleValue.h"
+#include <LibWeb/CSS/FontFeatureData.h>
+#include <LibWeb/CSS/Serialize.h>
+
+namespace Web::CSS {
+
+void FontVariantAlternatesFunctionStyleValue::serialize(StringBuilder& builder, SerializationMode) const
+{
+    switch (m_function_type) {
+    case FontFeatureValueType::Stylistic:
+        builder.append("stylistic("sv);
+        break;
+    case FontFeatureValueType::Styleset:
+        builder.append("styleset("sv);
+        break;
+    case FontFeatureValueType::CharacterVariant:
+        builder.append("character-variant("sv);
+        break;
+    case FontFeatureValueType::Swash:
+        builder.append("swash("sv);
+        break;
+    case FontFeatureValueType::Ornaments:
+        builder.append("ornaments("sv);
+        break;
+    case FontFeatureValueType::Annotation:
+        builder.append("annotation("sv);
+        break;
+    }
+
+    serialize_a_comma_separated_list(builder, m_names, [](StringBuilder& builder, NonnullRefPtr<StyleValue const> const& name) {
+        name->serialize(builder, SerializationMode::Normal);
+    });
+
+    builder.append(')');
+}
+
+ValueComparingNonnullRefPtr<StyleValue const> FontVariantAlternatesFunctionStyleValue::absolutized(ComputationContext const& context) const
+{
+    StyleValueVector absolutized_names;
+
+    bool any_name_changed = false;
+
+    for (auto const& name : m_names) {
+        auto absolutized_name = name->absolutized(context);
+
+        if (absolutized_name != name)
+            any_name_changed = true;
+
+        absolutized_names.append(absolutized_name);
+    }
+
+    if (!any_name_changed)
+        return *this;
+
+    return FontVariantAlternatesFunctionStyleValue::create(m_function_type, move(absolutized_names));
+}
+
+}