mirror of
https://github.com/LadybirdBrowser/ladybird.git
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215 lines
8.4 KiB
C++
215 lines
8.4 KiB
C++
/*
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* Copyright (c) 2018-2023, Andreas Kling <kling@serenityos.org>
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* Copyright (c) 2021, Tobias Christiansen <tobyase@serenityos.org>
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* Copyright (c) 2021-2023, Sam Atkins <atkinssj@serenityos.org>
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* Copyright (c) 2022-2023, MacDue <macdue@dueutil.tech>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/Concepts.h>
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#include <AK/GenericShorthands.h>
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#include <AK/NonnullOwnPtr.h>
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#include <AK/RefCounted.h>
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#include <AK/RefPtr.h>
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#include <AK/String.h>
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#include <AK/StringView.h>
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#include <AK/Variant.h>
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#include <AK/Vector.h>
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#include <AK/WeakPtr.h>
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#include <LibGfx/Color.h>
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#include <LibURL/URL.h>
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#include <LibWeb/CSS/Enums.h>
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#include <LibWeb/CSS/Length.h>
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#include <LibWeb/CSS/ValueID.h>
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#include <LibWeb/Forward.h>
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namespace Web::CSS {
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template<typename T>
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struct ValueComparingNonnullRefPtr : public NonnullRefPtr<T> {
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using NonnullRefPtr<T>::NonnullRefPtr;
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ValueComparingNonnullRefPtr(NonnullRefPtr<T> const& other)
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: NonnullRefPtr<T>(other)
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{
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}
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ValueComparingNonnullRefPtr(NonnullRefPtr<T>&& other)
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: NonnullRefPtr<T>(move(other))
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{
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}
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bool operator==(ValueComparingNonnullRefPtr const& other) const
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{
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return this->ptr() == other.ptr() || this->ptr()->equals(*other);
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}
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private:
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using NonnullRefPtr<T>::operator==;
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};
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template<typename T>
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struct ValueComparingRefPtr : public RefPtr<T> {
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using RefPtr<T>::RefPtr;
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ValueComparingRefPtr(RefPtr<T> const& other)
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: RefPtr<T>(other)
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{
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}
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ValueComparingRefPtr(RefPtr<T>&& other)
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: RefPtr<T>(move(other))
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{
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}
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template<typename U>
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bool operator==(ValueComparingNonnullRefPtr<U> const& other) const
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{
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return this->ptr() == other.ptr() || (this->ptr() && this->ptr()->equals(*other));
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}
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bool operator==(ValueComparingRefPtr const& other) const
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{
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return this->ptr() == other.ptr() || (this->ptr() && other.ptr() && this->ptr()->equals(*other));
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}
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private:
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using RefPtr<T>::operator==;
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};
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using StyleValueVector = Vector<ValueComparingNonnullRefPtr<StyleValue const>>;
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#define ENUMERATE_STYLE_VALUE_TYPES \
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__ENUMERATE_STYLE_VALUE_TYPE(Angle, angle) \
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__ENUMERATE_STYLE_VALUE_TYPE(BackgroundRepeat, background_repeat) \
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__ENUMERATE_STYLE_VALUE_TYPE(BackgroundSize, background_size) \
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__ENUMERATE_STYLE_VALUE_TYPE(BorderRadius, border_radius) \
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__ENUMERATE_STYLE_VALUE_TYPE(Calculated, calculated) \
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__ENUMERATE_STYLE_VALUE_TYPE(Color, color) \
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__ENUMERATE_STYLE_VALUE_TYPE(ConicGradient, conic_gradient) \
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__ENUMERATE_STYLE_VALUE_TYPE(Content, content) \
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__ENUMERATE_STYLE_VALUE_TYPE(CustomIdent, custom_ident) \
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__ENUMERATE_STYLE_VALUE_TYPE(Display, display) \
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__ENUMERATE_STYLE_VALUE_TYPE(Easing, easing) \
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__ENUMERATE_STYLE_VALUE_TYPE(Edge, edge) \
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__ENUMERATE_STYLE_VALUE_TYPE(FilterValueList, filter_value_list) \
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__ENUMERATE_STYLE_VALUE_TYPE(Flex, flex) \
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__ENUMERATE_STYLE_VALUE_TYPE(Frequency, frequency) \
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__ENUMERATE_STYLE_VALUE_TYPE(GridAutoFlow, grid_auto_flow) \
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__ENUMERATE_STYLE_VALUE_TYPE(GridTemplateArea, grid_template_area) \
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__ENUMERATE_STYLE_VALUE_TYPE(GridTrackPlacement, grid_track_placement) \
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__ENUMERATE_STYLE_VALUE_TYPE(GridTrackSizeList, grid_track_size_list) \
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__ENUMERATE_STYLE_VALUE_TYPE(Identifier, identifier) \
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__ENUMERATE_STYLE_VALUE_TYPE(Image, image) \
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__ENUMERATE_STYLE_VALUE_TYPE(Inherit, inherit) \
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__ENUMERATE_STYLE_VALUE_TYPE(Initial, initial) \
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__ENUMERATE_STYLE_VALUE_TYPE(Integer, integer) \
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__ENUMERATE_STYLE_VALUE_TYPE(Length, length) \
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__ENUMERATE_STYLE_VALUE_TYPE(LinearGradient, linear_gradient) \
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__ENUMERATE_STYLE_VALUE_TYPE(MathDepth, math_depth) \
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__ENUMERATE_STYLE_VALUE_TYPE(Number, number) \
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__ENUMERATE_STYLE_VALUE_TYPE(Percentage, percentage) \
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__ENUMERATE_STYLE_VALUE_TYPE(Position, position) \
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__ENUMERATE_STYLE_VALUE_TYPE(RadialGradient, radial_gradient) \
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__ENUMERATE_STYLE_VALUE_TYPE(Ratio, ratio) \
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__ENUMERATE_STYLE_VALUE_TYPE(Rect, rect) \
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__ENUMERATE_STYLE_VALUE_TYPE(Resolution, resolution) \
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__ENUMERATE_STYLE_VALUE_TYPE(Revert, revert) \
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__ENUMERATE_STYLE_VALUE_TYPE(Shadow, shadow) \
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__ENUMERATE_STYLE_VALUE_TYPE(Shorthand, shorthand) \
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__ENUMERATE_STYLE_VALUE_TYPE(String, string) \
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__ENUMERATE_STYLE_VALUE_TYPE(Time, time) \
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__ENUMERATE_STYLE_VALUE_TYPE(Transformation, transformation) \
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__ENUMERATE_STYLE_VALUE_TYPE(Transition, transition) \
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__ENUMERATE_STYLE_VALUE_TYPE(Unresolved, unresolved) \
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__ENUMERATE_STYLE_VALUE_TYPE(Unset, unset) \
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__ENUMERATE_STYLE_VALUE_TYPE(URL, url) \
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__ENUMERATE_STYLE_VALUE_TYPE(ValueList, value_list)
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// NOTE:
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using ValueListStyleValue = StyleValueList;
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class StyleValue : public RefCounted<StyleValue> {
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public:
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virtual ~StyleValue() = default;
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enum class Type {
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#define __ENUMERATE_STYLE_VALUE_TYPE(TitleCaseName, SnakeCaseName) \
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TitleCaseName,
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ENUMERATE_STYLE_VALUE_TYPES
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#undef __ENUMERATE_STYLE_VALUE_TYPE
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};
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Type type() const { return m_type; }
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#define __ENUMERATE_STYLE_VALUE_TYPE(TitleCaseName, SnakeCaseName) \
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bool is_##SnakeCaseName() const { return type() == Type::TitleCaseName; } \
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TitleCaseName##StyleValue const& as_##SnakeCaseName() const; \
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TitleCaseName##StyleValue& as_##SnakeCaseName() { return const_cast<TitleCaseName##StyleValue&>(const_cast<StyleValue const&>(*this).as_##SnakeCaseName()); }
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ENUMERATE_STYLE_VALUE_TYPES
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#undef __ENUMERATE_STYLE_VALUE_TYPE
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bool is_abstract_image() const
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{
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return AK::first_is_one_of(type(), Type::Image, Type::LinearGradient, Type::ConicGradient, Type::RadialGradient);
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}
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AbstractImageStyleValue const& as_abstract_image() const;
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AbstractImageStyleValue& as_abstract_image() { return const_cast<AbstractImageStyleValue&>(const_cast<StyleValue const&>(*this).as_abstract_image()); }
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// https://www.w3.org/TR/css-values-4/#common-keywords
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// https://drafts.csswg.org/css-cascade-4/#valdef-all-revert
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bool is_css_wide_keyword() const { return is_inherit() || is_initial() || is_revert() || is_unset(); }
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bool has_auto() const;
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virtual bool has_color() const { return false; }
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virtual ValueComparingNonnullRefPtr<StyleValue const> absolutized(CSSPixelRect const& viewport_rect, Length::FontMetrics const& font_metrics, Length::FontMetrics const& root_font_metrics) const;
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virtual Color to_color(Optional<Layout::NodeWithStyle const&>) const { return {}; }
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ValueID to_identifier() const;
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virtual String to_string() const = 0;
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[[nodiscard]] int to_font_weight() const;
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[[nodiscard]] int to_font_slope() const;
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[[nodiscard]] int to_font_stretch_width() const;
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virtual bool equals(StyleValue const& other) const = 0;
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bool operator==(StyleValue const& other) const
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{
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return this->equals(other);
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}
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protected:
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explicit StyleValue(Type);
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private:
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Type m_type;
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};
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template<typename T>
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struct StyleValueWithDefaultOperators : public StyleValue {
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using StyleValue::StyleValue;
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virtual bool equals(StyleValue const& other) const override
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{
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if (type() != other.type())
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return false;
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auto const& typed_other = static_cast<T const&>(other);
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return static_cast<T const&>(*this).properties_equal(typed_other);
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}
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};
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}
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template<>
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struct AK::Formatter<Web::CSS::StyleValue> : Formatter<StringView> {
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ErrorOr<void> format(FormatBuilder& builder, Web::CSS::StyleValue const& style_value)
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{
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return Formatter<StringView>::format(builder, style_value.to_string());
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}
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};
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