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https://github.com/LadybirdBrowser/ladybird.git
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6b912038d3
LibWeb still exposed the concrete CompositorThread to Page, Navigable, and EventHandler, so compositor IPC would have leaked the thread implementation into callers. The old thread APIs also bundled page presentation callbacks and main-thread wakeups into the same object, which made it awkward for WebContent to put an actor boundary in between. Introduce CompositorHost and context handles as the caller-facing API, and move shared compositor protocol values out of CompositorThread. Add WebContentCompositor IPC endpoints and route PageHost through a paired in-process transport. The actor owns CompositorThread with explicit main-thread and UI presentation clients, while screenshot completion is serialized on the WebContent event loop using request IDs. The intention for introducing IPC here is to prepare for moving the compositor thread into a separate process.
242 lines
10 KiB
C++
242 lines
10 KiB
C++
/*
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* Copyright (c) 2018-2025, Andreas Kling <andreas@ladybird.org>
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* Copyright (c) 2021-2025, Sam Atkins <sam@ladybird.org>
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* Copyright (c) 2021, Tobias Christiansen <tobyase@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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#include <AK/StringBuilder.h>
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#include <LibGfx/Font/Font.h>
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#include <LibGfx/Font/FontStyleMapping.h>
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#include <LibWeb/CSS/CSSStyleValue.h>
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#include <LibWeb/CSS/ComputedProperties.h>
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#include <LibWeb/CSS/Parser/Parser.h>
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#include <LibWeb/CSS/StyleValues/AbstractImageStyleValue.h>
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#include <LibWeb/CSS/StyleValues/AnchorSizeStyleValue.h>
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#include <LibWeb/CSS/StyleValues/AnchorStyleValue.h>
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#include <LibWeb/CSS/StyleValues/AngleStyleValue.h>
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#include <LibWeb/CSS/StyleValues/BackgroundSizeStyleValue.h>
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#include <LibWeb/CSS/StyleValues/BasicShapeStyleValue.h>
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#include <LibWeb/CSS/StyleValues/BorderImageSliceStyleValue.h>
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#include <LibWeb/CSS/StyleValues/BorderRadiusRectStyleValue.h>
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#include <LibWeb/CSS/StyleValues/BorderRadiusStyleValue.h>
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#include <LibWeb/CSS/StyleValues/CalculatedStyleValue.h>
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#include <LibWeb/CSS/StyleValues/ColorInterpolationMethodStyleValue.h>
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#include <LibWeb/CSS/StyleValues/ColorSchemeStyleValue.h>
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#include <LibWeb/CSS/StyleValues/ColorStyleValue.h>
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#include <LibWeb/CSS/StyleValues/ConicGradientStyleValue.h>
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#include <LibWeb/CSS/StyleValues/ContentStyleValue.h>
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#include <LibWeb/CSS/StyleValues/CounterDefinitionsStyleValue.h>
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#include <LibWeb/CSS/StyleValues/CounterStyleStyleValue.h>
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#include <LibWeb/CSS/StyleValues/CounterStyleSystemStyleValue.h>
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#include <LibWeb/CSS/StyleValues/CounterStyleValue.h>
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#include <LibWeb/CSS/StyleValues/CursorStyleValue.h>
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#include <LibWeb/CSS/StyleValues/CustomIdentStyleValue.h>
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#include <LibWeb/CSS/StyleValues/DisplayStyleValue.h>
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#include <LibWeb/CSS/StyleValues/EasingStyleValue.h>
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#include <LibWeb/CSS/StyleValues/EdgeStyleValue.h>
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#include <LibWeb/CSS/StyleValues/EmptyOptionalStyleValue.h>
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#include <LibWeb/CSS/StyleValues/FilterValueListStyleValue.h>
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#include <LibWeb/CSS/StyleValues/FlexStyleValue.h>
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#include <LibWeb/CSS/StyleValues/FontSourceStyleValue.h>
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#include <LibWeb/CSS/StyleValues/FontStyleStyleValue.h>
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#include <LibWeb/CSS/StyleValues/FrequencyStyleValue.h>
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#include <LibWeb/CSS/StyleValues/FunctionStyleValue.h>
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#include <LibWeb/CSS/StyleValues/GridAutoFlowStyleValue.h>
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#include <LibWeb/CSS/StyleValues/GridTemplateAreaStyleValue.h>
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#include <LibWeb/CSS/StyleValues/GridTrackPlacementStyleValue.h>
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#include <LibWeb/CSS/StyleValues/GridTrackSizeListStyleValue.h>
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#include <LibWeb/CSS/StyleValues/GuaranteedInvalidStyleValue.h>
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#include <LibWeb/CSS/StyleValues/ImageSetStyleValue.h>
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#include <LibWeb/CSS/StyleValues/ImageStyleValue.h>
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#include <LibWeb/CSS/StyleValues/IntegerStyleValue.h>
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#include <LibWeb/CSS/StyleValues/KeywordStyleValue.h>
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#include <LibWeb/CSS/StyleValues/LengthStyleValue.h>
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#include <LibWeb/CSS/StyleValues/LinearGradientStyleValue.h>
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#include <LibWeb/CSS/StyleValues/NumberStyleValue.h>
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#include <LibWeb/CSS/StyleValues/OpacityValueStyleValue.h>
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#include <LibWeb/CSS/StyleValues/OpenTypeTaggedStyleValue.h>
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#include <LibWeb/CSS/StyleValues/OverflowClipMarginStyleValue.h>
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#include <LibWeb/CSS/StyleValues/PendingSubstitutionStyleValue.h>
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#include <LibWeb/CSS/StyleValues/PercentageStyleValue.h>
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#include <LibWeb/CSS/StyleValues/PositionStyleValue.h>
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#include <LibWeb/CSS/StyleValues/RadialGradientStyleValue.h>
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#include <LibWeb/CSS/StyleValues/RadialSizeStyleValue.h>
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#include <LibWeb/CSS/StyleValues/RandomValueSharingStyleValue.h>
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#include <LibWeb/CSS/StyleValues/RatioStyleValue.h>
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#include <LibWeb/CSS/StyleValues/RectStyleValue.h>
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#include <LibWeb/CSS/StyleValues/RepeatStyleStyleValue.h>
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#include <LibWeb/CSS/StyleValues/ResolutionStyleValue.h>
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#include <LibWeb/CSS/StyleValues/ScrollbarColorStyleValue.h>
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#include <LibWeb/CSS/StyleValues/ScrollbarGutterStyleValue.h>
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#include <LibWeb/CSS/StyleValues/ShadowStyleValue.h>
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#include <LibWeb/CSS/StyleValues/ShorthandStyleValue.h>
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#include <LibWeb/CSS/StyleValues/StringStyleValue.h>
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#include <LibWeb/CSS/StyleValues/StyleValue.h>
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#include <LibWeb/CSS/StyleValues/StyleValueList.h>
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#include <LibWeb/CSS/StyleValues/SuperellipseStyleValue.h>
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#include <LibWeb/CSS/StyleValues/TextIndentStyleValue.h>
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#include <LibWeb/CSS/StyleValues/TextUnderlinePositionStyleValue.h>
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#include <LibWeb/CSS/StyleValues/TimeStyleValue.h>
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#include <LibWeb/CSS/StyleValues/TransformationStyleValue.h>
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#include <LibWeb/CSS/StyleValues/TreeCountingFunctionStyleValue.h>
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#include <LibWeb/CSS/StyleValues/TupleStyleValue.h>
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#include <LibWeb/CSS/StyleValues/URLStyleValue.h>
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#include <LibWeb/CSS/StyleValues/UnicodeRangeStyleValue.h>
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#include <LibWeb/CSS/StyleValues/UnresolvedStyleValue.h>
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#include <LibWeb/CSS/SystemColor.h>
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#include <LibWeb/DOM/Document.h>
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#include <LibWeb/HTML/Navigable.h>
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#include <LibWeb/Layout/Node.h>
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#include <LibWeb/Page/Page.h>
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namespace Web::CSS {
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ColorResolutionContext ColorResolutionContext::for_element(DOM::AbstractElement const& element)
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{
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auto color_scheme = element.computed_properties()->color_scheme(element.document().page().preferred_color_scheme(), element.document().supported_color_schemes());
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CalculationResolutionContext calculation_resolution_context { .length_resolution_context = Length::ResolutionContext::for_element(element) };
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return {
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.color_scheme = color_scheme,
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.current_color = element.computed_properties()->color(PropertyID::Color, { color_scheme, CSS::InitialValues::color(), CSS::SystemColor::accent_color(color_scheme), element.document(), calculation_resolution_context }),
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.accent_color = element.computed_properties()->accent_color({ color_scheme, CSS::InitialValues::color(), CSS::SystemColor::accent_color(color_scheme), element.document(), calculation_resolution_context }),
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.document = element.document(),
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.calculation_resolution_context = calculation_resolution_context
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};
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}
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ColorResolutionContext ColorResolutionContext::for_layout_node_with_style(Layout::NodeWithStyle const& layout_node)
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{
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return {
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.color_scheme = layout_node.computed_values().color_scheme(),
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.current_color = layout_node.computed_values().color(),
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.accent_color = layout_node.computed_values().accent_color(),
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.document = layout_node.document(),
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.calculation_resolution_context = { .length_resolution_context = Length::ResolutionContext::for_layout_node(layout_node) },
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};
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}
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StyleValue::StyleValue(Type type)
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: m_type(type)
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{
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}
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String StyleValue::to_string(SerializationMode mode) const
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{
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StringBuilder builder;
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serialize(builder, mode);
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return builder.to_string_without_validation();
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}
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AbstractImageStyleValue const& StyleValue::as_abstract_image() const
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{
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VERIFY(is_abstract_image());
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return static_cast<AbstractImageStyleValue const&>(*this);
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}
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DimensionStyleValue const& StyleValue::as_dimension() const
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{
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VERIFY(is_dimension());
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return static_cast<DimensionStyleValue const&>(*this);
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}
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#define __ENUMERATE_CSS_STYLE_VALUE_TYPE(title_case, snake_case, style_value_class_name) \
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style_value_class_name const& StyleValue::as_##snake_case() const \
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{ \
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VERIFY(is_##snake_case()); \
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return static_cast<style_value_class_name const&>(*this); \
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}
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ENUMERATE_CSS_STYLE_VALUE_TYPES
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#undef __ENUMERATE_CSS_STYLE_VALUE_TYPE
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ValueComparingNonnullRefPtr<StyleValue const> StyleValue::absolutized(ComputationContext const&) const
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{
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return *this;
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}
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bool StyleValue::has_auto() const
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{
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return is_keyword() && as_keyword().keyword() == Keyword::Auto;
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}
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Vector<Parser::ComponentValue> StyleValue::tokenize() const
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{
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// This is an inefficient way of producing ComponentValues, but it's guaranteed to work for types that round-trip.
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// FIXME: Implement better versions in the subclasses.
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return Parser::Parser::create(Parser::ParsingParams {}, to_string(SerializationMode::Normal)).parse_as_list_of_component_values();
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}
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// https://drafts.css-houdini.org/css-typed-om-1/#reify-as-a-cssstylevalue
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GC::Ref<CSSStyleValue> StyleValue::reify(JS::Realm& realm, FlyString const& associated_property) const
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{
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// 1. Return a new CSSStyleValue object representing value whose [[associatedProperty]] internal slot is set to property.
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return CSSStyleValue::create(realm, associated_property, *this);
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}
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// https://drafts.css-houdini.org/css-typed-om-1/#subdivide-into-iterations
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StyleValueVector StyleValue::subdivide_into_iterations(PropertyNameAndID const&) const
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{
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// To subdivide into iterations a CSS value whole value for a property property, execute the following steps:
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// 1. If property is a single-valued property, return a list containing whole value.
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// 2. Otherwise, divide whole value into individual iterations, as appropriate for property, and return a list
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// containing the iterations in order.
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// NB: We do this by type. By default, we assume step 1 applies. For step 2, override this method.
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return StyleValueVector { *this };
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}
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i32 int_from_style_value(NonnullRefPtr<StyleValue const> const& style_value)
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{
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if (style_value->is_integer())
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return style_value->as_integer().integer();
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if (style_value->is_calculated())
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return style_value->as_calculated().resolve_integer({}).value();
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VERIFY_NOT_REACHED();
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}
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double number_from_style_value(NonnullRefPtr<StyleValue const> const& style_value, Optional<double> percentage_basis)
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{
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if (style_value->is_number())
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return style_value->as_number().number();
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if (style_value->is_calculated()) {
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auto const& calculated_style_value = style_value->as_calculated();
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if (calculated_style_value.resolves_to_number())
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return calculated_style_value.resolve_number({}).value();
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if (calculated_style_value.resolves_to_percentage()) {
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VERIFY(percentage_basis.has_value());
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return calculated_style_value.resolve_percentage({}).value().as_fraction() * percentage_basis.value();
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}
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VERIFY_NOT_REACHED();
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}
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if (style_value->is_percentage()) {
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VERIFY(percentage_basis.has_value());
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return percentage_basis.value() * style_value->as_percentage().percentage().as_fraction();
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}
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VERIFY_NOT_REACHED();
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}
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FlyString const& string_from_style_value(NonnullRefPtr<StyleValue const> const& style_value)
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{
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if (style_value->is_string())
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return style_value->as_string().string_value();
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if (style_value->is_custom_ident())
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return style_value->as_custom_ident().custom_ident();
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VERIFY_NOT_REACHED();
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}
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}
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