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ladybird/Userland/Libraries/LibWeb/CSS/StyleValue.cpp
Sam Atkins d20254f1bc LibWeb: Rename CompositeStyleValue -> ShorthandStyleValue 
It's a shorthand, so let's call it that. :^)
2023-09-20 12:17:16 +01:00

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/*
* Copyright (c) 2018-2023, Andreas Kling <kling@serenityos.org>
* Copyright (c) 2021-2023, Sam Atkins <atkinssj@serenityos.org>
* Copyright (c) 2021, Tobias Christiansen <tobyase@serenityos.org>
* Copyright (c) 2022-2023, MacDue <macdue@dueutil.tech>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibGfx/Font/FontDatabase.h>
#include <LibGfx/Font/FontStyleMapping.h>
#include <LibWeb/CSS/StyleValue.h>
#include <LibWeb/CSS/StyleValues/AbstractImageStyleValue.h>
#include <LibWeb/CSS/StyleValues/AngleStyleValue.h>
#include <LibWeb/CSS/StyleValues/BackgroundRepeatStyleValue.h>
#include <LibWeb/CSS/StyleValues/BackgroundSizeStyleValue.h>
#include <LibWeb/CSS/StyleValues/BackgroundStyleValue.h>
#include <LibWeb/CSS/StyleValues/BorderRadiusShorthandStyleValue.h>
#include <LibWeb/CSS/StyleValues/BorderRadiusStyleValue.h>
#include <LibWeb/CSS/StyleValues/BorderStyleValue.h>
#include <LibWeb/CSS/StyleValues/CalculatedStyleValue.h>
#include <LibWeb/CSS/StyleValues/ColorStyleValue.h>
#include <LibWeb/CSS/StyleValues/ConicGradientStyleValue.h>
#include <LibWeb/CSS/StyleValues/ContentStyleValue.h>
#include <LibWeb/CSS/StyleValues/CustomIdentStyleValue.h>
#include <LibWeb/CSS/StyleValues/DisplayStyleValue.h>
#include <LibWeb/CSS/StyleValues/EasingStyleValue.h>
#include <LibWeb/CSS/StyleValues/EdgeStyleValue.h>
#include <LibWeb/CSS/StyleValues/FilterValueListStyleValue.h>
#include <LibWeb/CSS/StyleValues/FlexFlowStyleValue.h>
#include <LibWeb/CSS/StyleValues/FlexStyleValue.h>
#include <LibWeb/CSS/StyleValues/FontStyleValue.h>
#include <LibWeb/CSS/StyleValues/FrequencyStyleValue.h>
#include <LibWeb/CSS/StyleValues/GridAreaShorthandStyleValue.h>
#include <LibWeb/CSS/StyleValues/GridAutoFlowStyleValue.h>
#include <LibWeb/CSS/StyleValues/GridTemplateAreaStyleValue.h>
#include <LibWeb/CSS/StyleValues/GridTrackPlacementShorthandStyleValue.h>
#include <LibWeb/CSS/StyleValues/GridTrackPlacementStyleValue.h>
#include <LibWeb/CSS/StyleValues/GridTrackSizeListShorthandStyleValue.h>
#include <LibWeb/CSS/StyleValues/GridTrackSizeListStyleValue.h>
#include <LibWeb/CSS/StyleValues/IdentifierStyleValue.h>
#include <LibWeb/CSS/StyleValues/ImageStyleValue.h>
#include <LibWeb/CSS/StyleValues/InheritStyleValue.h>
#include <LibWeb/CSS/StyleValues/InitialStyleValue.h>
#include <LibWeb/CSS/StyleValues/IntegerStyleValue.h>
#include <LibWeb/CSS/StyleValues/LengthStyleValue.h>
#include <LibWeb/CSS/StyleValues/LinearGradientStyleValue.h>
#include <LibWeb/CSS/StyleValues/ListStyleStyleValue.h>
#include <LibWeb/CSS/StyleValues/MathDepthStyleValue.h>
#include <LibWeb/CSS/StyleValues/NumberStyleValue.h>
#include <LibWeb/CSS/StyleValues/OverflowStyleValue.h>
#include <LibWeb/CSS/StyleValues/PercentageStyleValue.h>
#include <LibWeb/CSS/StyleValues/PlaceContentStyleValue.h>
#include <LibWeb/CSS/StyleValues/PlaceItemsStyleValue.h>
#include <LibWeb/CSS/StyleValues/PlaceSelfStyleValue.h>
#include <LibWeb/CSS/StyleValues/PositionStyleValue.h>
#include <LibWeb/CSS/StyleValues/RadialGradientStyleValue.h>
#include <LibWeb/CSS/StyleValues/RatioStyleValue.h>
#include <LibWeb/CSS/StyleValues/RectStyleValue.h>
#include <LibWeb/CSS/StyleValues/ResolutionStyleValue.h>
#include <LibWeb/CSS/StyleValues/RevertStyleValue.h>
#include <LibWeb/CSS/StyleValues/ShadowStyleValue.h>
#include <LibWeb/CSS/StyleValues/ShorthandStyleValue.h>
#include <LibWeb/CSS/StyleValues/StringStyleValue.h>
#include <LibWeb/CSS/StyleValues/StyleValueList.h>
#include <LibWeb/CSS/StyleValues/TextDecorationStyleValue.h>
#include <LibWeb/CSS/StyleValues/TimeStyleValue.h>
#include <LibWeb/CSS/StyleValues/TransformationStyleValue.h>
#include <LibWeb/CSS/StyleValues/URLStyleValue.h>
#include <LibWeb/CSS/StyleValues/UnresolvedStyleValue.h>
#include <LibWeb/CSS/StyleValues/UnsetStyleValue.h>
namespace Web::CSS {
StyleValue::StyleValue(Type type)
: m_type(type)
{
}
AbstractImageStyleValue const& StyleValue::as_abstract_image() const
{
VERIFY(is_abstract_image());
return static_cast<AbstractImageStyleValue const&>(*this);
}
#define __ENUMERATE_STYLE_VALUE_TYPE(TitleCaseName, SnakeCaseName) \
TitleCaseName##StyleValue const& StyleValue::as_##SnakeCaseName() const \
{ \
VERIFY(is_##SnakeCaseName()); \
return static_cast<TitleCaseName##StyleValue const&>(*this); \
}
ENUMERATE_STYLE_VALUE_TYPES
#undef __ENUMERATE_STYLE_VALUE_TYPE
ValueComparingNonnullRefPtr<StyleValue const> StyleValue::absolutized(CSSPixelRect const&, Length::FontMetrics const&, Length::FontMetrics const&) const
{
return *this;
}
bool StyleValue::has_auto() const
{
return is_identifier() && as_identifier().id() == ValueID::Auto;
}
ValueID StyleValue::to_identifier() const
{
if (is_identifier())
return as_identifier().id();
return ValueID::Invalid;
}
int StyleValue::to_font_weight() const
{
if (is_identifier()) {
switch (static_cast<IdentifierStyleValue const&>(*this).id()) {
case CSS::ValueID::Normal:
return Gfx::FontWeight::Regular;
case CSS::ValueID::Bold:
return Gfx::FontWeight::Bold;
case CSS::ValueID::Lighter:
// FIXME: This should be relative to the parent.
return Gfx::FontWeight::Regular;
case CSS::ValueID::Bolder:
// FIXME: This should be relative to the parent.
return Gfx::FontWeight::Bold;
default:
return Gfx::FontWeight::Regular;
}
}
if (is_number()) {
return round_to<int>(as_number().number());
}
if (is_calculated()) {
auto maybe_weight = const_cast<CalculatedStyleValue&>(as_calculated()).resolve_integer();
if (maybe_weight.has_value())
return maybe_weight.value();
}
return Gfx::FontWeight::Regular;
}
int StyleValue::to_font_slope() const
{
// FIXME: Implement oblique <angle>
if (is_identifier()) {
switch (static_cast<IdentifierStyleValue const&>(*this).id()) {
case CSS::ValueID::Italic: {
static int italic_slope = Gfx::name_to_slope("Italic"sv);
return italic_slope;
}
case CSS::ValueID::Oblique:
static int oblique_slope = Gfx::name_to_slope("Oblique"sv);
return oblique_slope;
case CSS::ValueID::Normal:
default:
break;
}
}
static int normal_slope = Gfx::name_to_slope("Normal"sv);
return normal_slope;
}
int StyleValue::to_font_stretch_width() const
{
int width = Gfx::FontWidth::Normal;
if (is_identifier()) {
switch (static_cast<IdentifierStyleValue const&>(*this).id()) {
case CSS::ValueID::UltraCondensed:
width = Gfx::FontWidth::UltraCondensed;
break;
case CSS::ValueID::ExtraCondensed:
width = Gfx::FontWidth::ExtraCondensed;
break;
case CSS::ValueID::Condensed:
width = Gfx::FontWidth::Condensed;
break;
case CSS::ValueID::SemiCondensed:
width = Gfx::FontWidth::SemiCondensed;
break;
case CSS::ValueID::Normal:
width = Gfx::FontWidth::Normal;
break;
case CSS::ValueID::SemiExpanded:
width = Gfx::FontWidth::SemiExpanded;
break;
case CSS::ValueID::Expanded:
width = Gfx::FontWidth::Expanded;
break;
case CSS::ValueID::ExtraExpanded:
width = Gfx::FontWidth::ExtraExpanded;
break;
case CSS::ValueID::UltraExpanded:
width = Gfx::FontWidth::UltraExpanded;
break;
default:
break;
}
} else if (is_percentage()) {
float percentage = as_percentage().percentage().value();
if (percentage <= 50) {
width = Gfx::FontWidth::UltraCondensed;
} else if (percentage <= 62.5f) {
width = Gfx::FontWidth::ExtraCondensed;
} else if (percentage <= 75.0f) {
width = Gfx::FontWidth::Condensed;
} else if (percentage <= 87.5f) {
width = Gfx::FontWidth::SemiCondensed;
} else if (percentage <= 100.0f) {
width = Gfx::FontWidth::Normal;
} else if (percentage <= 112.5f) {
width = Gfx::FontWidth::SemiExpanded;
} else if (percentage <= 125.0f) {
width = Gfx::FontWidth::Expanded;
} else if (percentage <= 150.0f) {
width = Gfx::FontWidth::ExtraExpanded;
} else {
width = Gfx::FontWidth::UltraExpanded;
}
}
return width;
}
}
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