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https://github.com/LadybirdBrowser/ladybird.git
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284 lines
12 KiB
C++
284 lines
12 KiB
C++
/*
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* Copyright (c) 2018-2025, Andreas Kling <andreas@ladybird.org>
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* Copyright (c) 2023-2025, Sam Atkins <sam@ladybird.org>
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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/HashMap.h>
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#include <AK/NonnullRefPtr.h>
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#include <LibGC/CellAllocator.h>
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#include <LibGC/Ptr.h>
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#include <LibGfx/Font/Font.h>
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#include <LibGfx/FontCascadeList.h>
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#include <LibGfx/Forward.h>
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#include <LibJS/Heap/Cell.h>
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#include <LibWeb/CSS/ComputedValues.h>
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#include <LibWeb/CSS/LengthBox.h>
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#include <LibWeb/CSS/PropertyID.h>
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#include <LibWeb/CSS/PseudoClass.h>
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#include <LibWeb/CSS/PseudoClassBitmap.h>
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#include <LibWeb/CSS/StyleProperty.h>
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namespace Web::CSS {
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class ComputedProperties final : public JS::Cell {
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GC_CELL(ComputedProperties, JS::Cell);
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GC_DECLARE_ALLOCATOR(ComputedProperties);
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public:
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static constexpr double normal_line_height_scale = 1.15;
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static constexpr size_t number_of_properties = to_underlying(last_property_id) + 1;
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virtual ~ComputedProperties() override;
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template<typename Callback>
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inline void for_each_property(Callback callback) const
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{
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for (size_t i = 0; i < m_property_values.size(); ++i) {
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if (m_property_values[i])
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callback((PropertyID)i, *m_property_values[i]);
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}
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}
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enum class Inherited {
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No,
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Yes
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};
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HashMap<PropertyID, NonnullRefPtr<CSSStyleValue const>> const& animated_property_values() const { return m_animated_property_values; }
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void reset_animated_properties(Badge<Animations::KeyframeEffect>);
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bool is_property_important(PropertyID property_id) const;
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bool is_property_inherited(PropertyID property_id) const;
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void set_property_important(PropertyID, Important);
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void set_property_inherited(PropertyID, Inherited);
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void set_property(PropertyID, NonnullRefPtr<CSSStyleValue const> value, Inherited = Inherited::No, Important = Important::No);
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void set_animated_property(PropertyID, NonnullRefPtr<CSSStyleValue const> value);
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enum class WithAnimationsApplied {
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No,
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Yes,
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};
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CSSStyleValue const& property(PropertyID, WithAnimationsApplied = WithAnimationsApplied::Yes) const;
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CSSStyleValue const* maybe_null_property(PropertyID) const;
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void revert_property(PropertyID, ComputedProperties const& style_for_revert);
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GC::Ptr<CSSStyleDeclaration const> animation_name_source() const { return m_animation_name_source; }
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void set_animation_name_source(GC::Ptr<CSSStyleDeclaration const> declaration) { m_animation_name_source = declaration; }
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GC::Ptr<CSSStyleDeclaration const> transition_property_source() const { return m_transition_property_source; }
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void set_transition_property_source(GC::Ptr<CSSStyleDeclaration const> declaration) { m_transition_property_source = declaration; }
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Size size_value(PropertyID) const;
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[[nodiscard]] Variant<LengthPercentage, NormalGap> gap_value(PropertyID) const;
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LengthPercentage length_percentage_or_fallback(PropertyID, LengthPercentage const& fallback) const;
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Optional<LengthPercentage> length_percentage(PropertyID) const;
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LengthBox length_box(PropertyID left_id, PropertyID top_id, PropertyID right_id, PropertyID bottom_id, Length const& default_value) const;
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Color color_or_fallback(PropertyID, Layout::NodeWithStyle const&, Color fallback) const;
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PreferredColorScheme color_scheme(PreferredColorScheme, Optional<Vector<String> const&> document_supported_schemes) const;
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TextAnchor text_anchor() const;
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TextAlign text_align() const;
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TextJustify text_justify() const;
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TextOverflow text_overflow() const;
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TextRendering text_rendering() const;
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Length border_spacing_horizontal(Layout::Node const&) const;
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Length border_spacing_vertical(Layout::Node const&) const;
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CaptionSide caption_side() const;
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Clip clip() const;
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Display display() const;
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Float float_() const;
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Color caret_color(Layout::NodeWithStyle const&) const;
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Clear clear() const;
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ColumnSpan column_span() const;
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struct ContentDataAndQuoteNestingLevel {
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ContentData content_data;
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u32 final_quote_nesting_level { 0 };
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};
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ContentDataAndQuoteNestingLevel content(DOM::AbstractElement&, u32 initial_quote_nesting_level) const;
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ContentVisibility content_visibility() const;
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Vector<CursorData> cursor() const;
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Variant<LengthOrCalculated, NumberOrCalculated> tab_size() const;
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WhiteSpaceCollapse white_space_collapse() const;
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WhiteSpaceTrimData white_space_trim() const;
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WordBreak word_break() const;
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Optional<LengthOrCalculated> word_spacing() const;
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Optional<LengthOrCalculated> letter_spacing() const;
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LineStyle line_style(PropertyID) const;
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OutlineStyle outline_style() const;
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Vector<TextDecorationLine> text_decoration_line() const;
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TextDecorationStyle text_decoration_style() const;
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TextTransform text_transform() const;
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Vector<ShadowData> text_shadow(Layout::Node const&) const;
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TextWrapMode text_wrap_mode() const;
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ListStyleType list_style_type() const;
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ListStylePosition list_style_position() const;
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FlexDirection flex_direction() const;
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FlexWrap flex_wrap() const;
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FlexBasis flex_basis() const;
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float flex_grow() const;
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float flex_shrink() const;
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int order() const;
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Optional<Color> accent_color(Layout::NodeWithStyle const&) const;
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AlignContent align_content() const;
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AlignItems align_items() const;
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AlignSelf align_self() const;
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Appearance appearance() const;
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Filter backdrop_filter() const;
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Filter filter() const;
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float opacity() const;
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Visibility visibility() const;
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ImageRendering image_rendering() const;
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JustifyContent justify_content() const;
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JustifyItems justify_items() const;
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JustifySelf justify_self() const;
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Overflow overflow_x() const;
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Overflow overflow_y() const;
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Vector<ShadowData> box_shadow(Layout::Node const&) const;
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BoxSizing box_sizing() const;
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PointerEvents pointer_events() const;
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Variant<VerticalAlign, LengthPercentage> vertical_align() const;
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Optional<Gfx::FontVariantAlternates> font_variant_alternates() const;
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FontVariantCaps font_variant_caps() const;
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Optional<Gfx::FontVariantEastAsian> font_variant_east_asian() const;
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FontVariantEmoji font_variant_emoji() const;
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Optional<Gfx::FontVariantLigatures> font_variant_ligatures() const;
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Optional<Gfx::FontVariantNumeric> font_variant_numeric() const;
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FontVariantPosition font_variant_position() const;
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FontKerning font_kerning() const;
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Optional<FlyString> font_language_override() const;
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Optional<HashMap<FlyString, IntegerOrCalculated>> font_feature_settings() const;
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Optional<HashMap<FlyString, NumberOrCalculated>> font_variation_settings() const;
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GridTrackSizeList grid_auto_columns() const;
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GridTrackSizeList grid_auto_rows() const;
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GridTrackSizeList grid_template_columns() const;
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GridTrackSizeList grid_template_rows() const;
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[[nodiscard]] GridAutoFlow grid_auto_flow() const;
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GridTrackPlacement grid_column_end() const;
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GridTrackPlacement grid_column_start() const;
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GridTrackPlacement grid_row_end() const;
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GridTrackPlacement grid_row_start() const;
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BorderCollapse border_collapse() const;
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CSS::EmptyCells empty_cells() const;
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Vector<Vector<String>> grid_template_areas() const;
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ObjectFit object_fit() const;
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ObjectPosition object_position() const;
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TableLayout table_layout() const;
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Direction direction() const;
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UnicodeBidi unicode_bidi() const;
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WritingMode writing_mode() const;
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UserSelect user_select() const;
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Isolation isolation() const;
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TouchActionData touch_action() const;
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Containment contain() const;
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MixBlendMode mix_blend_mode() const;
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Optional<FlyString> view_transition_name() const;
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static Vector<Transformation> transformations_for_style_value(CSSStyleValue const& value);
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Vector<Transformation> transformations() const;
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TransformBox transform_box() const;
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TransformOrigin transform_origin() const;
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Optional<Transformation> rotate() const;
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Optional<Transformation> translate() const;
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Optional<Transformation> scale() const;
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MaskType mask_type() const;
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Color stop_color() const;
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float stop_opacity() const;
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float fill_opacity() const;
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StrokeLinecap stroke_linecap() const;
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StrokeLinejoin stroke_linejoin() const;
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NumberOrCalculated stroke_miterlimit() const;
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float stroke_opacity() const;
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FillRule fill_rule() const;
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ClipRule clip_rule() const;
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Color flood_color(Layout::NodeWithStyle const&) const;
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float flood_opacity() const;
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Gfx::FontCascadeList const& computed_font_list() const
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{
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VERIFY(m_font_list);
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return *m_font_list;
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}
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Gfx::Font const& first_available_computed_font() const
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{
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VERIFY(m_first_available_computed_font);
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return *m_first_available_computed_font;
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}
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void set_computed_font_list(NonnullRefPtr<Gfx::FontCascadeList const> font_list)
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{
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m_font_list = move(font_list);
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// https://drafts.csswg.org/css-fonts/#first-available-font
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// First font for which the character U+0020 (space) is not excluded by a unicode-range
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m_first_available_computed_font = m_font_list->font_for_code_point(' ');
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}
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[[nodiscard]] CSSPixels compute_line_height(CSSPixelRect const& viewport_rect, Length::FontMetrics const& font_metrics, Length::FontMetrics const& root_font_metrics) const;
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[[nodiscard]] CSSPixels line_height() const { return *m_line_height; }
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void set_line_height(Badge<StyleComputer> const&, CSSPixels line_height) { m_line_height = line_height; }
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[[nodiscard]] CSSPixels font_size() const { return *m_font_size; }
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void set_font_size(Badge<StyleComputer> const&, CSSPixels font_size) { m_font_size = font_size; }
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bool operator==(ComputedProperties const&) const;
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Positioning position() const;
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Optional<int> z_index() const;
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void set_math_depth(int math_depth);
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int math_depth() const { return m_math_depth; }
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QuotesData quotes() const;
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Vector<CounterData> counter_data(PropertyID) const;
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ScrollbarColorData scrollbar_color(Layout::NodeWithStyle const& layout_node) const;
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ScrollbarWidth scrollbar_width() const;
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static NonnullRefPtr<Gfx::Font const> font_fallback(bool monospace, bool bold, float point_size);
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static float resolve_opacity_value(CSSStyleValue const& value);
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bool has_attempted_match_against_pseudo_class(PseudoClass pseudo_class) const
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{
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return m_attempted_pseudo_class_matches.get(pseudo_class);
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}
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void set_attempted_pseudo_class_matches(PseudoClassBitmap const& results)
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{
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m_attempted_pseudo_class_matches = results;
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}
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private:
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friend class StyleComputer;
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ComputedProperties();
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virtual void visit_edges(Visitor&) override;
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Overflow overflow(PropertyID) const;
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Vector<ShadowData> shadow(PropertyID, Layout::Node const&) const;
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GC::Ptr<CSSStyleDeclaration const> m_animation_name_source;
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GC::Ptr<CSSStyleDeclaration const> m_transition_property_source;
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Array<RefPtr<CSSStyleValue const>, number_of_properties> m_property_values;
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Array<u8, ceil_div(number_of_properties, 8uz)> m_property_important {};
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Array<u8, ceil_div(number_of_properties, 8uz)> m_property_inherited {};
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HashMap<PropertyID, NonnullRefPtr<CSSStyleValue const>> m_animated_property_values;
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int m_math_depth { InitialValues::math_depth() };
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RefPtr<Gfx::FontCascadeList const> m_font_list;
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RefPtr<Gfx::Font const> m_first_available_computed_font;
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Optional<CSSPixels> m_line_height;
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Optional<CSSPixels> m_font_size;
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PseudoClassBitmap m_attempted_pseudo_class_matches;
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};
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}
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