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ladybird/Libraries/LibWeb/CSS/StyleValues/FontStyleStyleValue.cpp

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C++

/*
* Copyright (c) 2025, Tim Ledbetter <tim.ledbetter@ladybird.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include "FontStyleStyleValue.h"
#include <LibWeb/CSS/CSSStyleValue.h>
#include <LibWeb/CSS/Serialize.h>
#include <LibWeb/CSS/StyleValues/AngleStyleValue.h>
namespace Web::CSS {
FontStyleStyleValue::FontStyleStyleValue(FontStyle font_style, ValueComparingRefPtr<CSSStyleValue const> angle_value)
: StyleValueWithDefaultOperators(Type::FontStyle)
, m_font_style(font_style)
, m_angle_value(angle_value)
{
}
FontStyleStyleValue::~FontStyleStyleValue() = default;
String FontStyleStyleValue::to_string(SerializationMode mode) const
{
Optional<String> angle_string;
if (m_angle_value) {
angle_string = m_angle_value->to_string(mode);
if (m_font_style == FontStyle::Oblique && angle_string == "0deg"sv)
return "normal"_string;
}
StringBuilder builder;
builder.append(CSS::to_string(m_font_style));
// https://drafts.csswg.org/css-fonts/#valdef-font-style-oblique-angle--90deg-90deg
// The lack of an <angle> represents 14deg. (Note that a font might internally provide its own mapping for "oblique", but the mapping within the font is disregarded.)
static auto default_angle = Angle::make_degrees(14);
if (angle_string.has_value() && !(m_angle_value->is_angle() && m_angle_value->as_angle().angle() == default_angle))
builder.appendff(" {}", angle_string);
return MUST(builder.to_string());
}
}