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ed7f4664c2
Before this change, StyleComputer would essentially take a DOM element, find all the CSS rules that apply to it, and resolve the computed value for each CSS property for that element. This worked great, but it meant we had to do all the work of selector matching and cascading every time. To enable new optimizations, this change introduces a break in the middle of this process where we've produced a "CascadedProperties". This object contains the result of the cascade, before we've begun turning cascaded values into computed values. The cascaded properties are now stored with each element, which will later allow us to do partial updates without re-running the full StyleComputer machine. This will be particularly valuable for re-implementing CSS inheritance, which is extremely heavy today. Note that CSS animations and CSS transitions operate entirely on the computed values, even though the cascade order would have you believe they happen earlier. I'm not confident we have the right architecture for this, but that's a separate issue.
41 lines
2.2 KiB
C++
41 lines
2.2 KiB
C++
/*
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* Copyright (c) 2018-2021, Andreas Kling <andreas@ladybird.org>
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* Copyright (c) 2021, the SerenityOS developers.
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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/Forward.h>
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#include <LibWeb/CSS/CSSNamespaceRule.h>
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#include <LibWeb/Forward.h>
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namespace Web {
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void dump_tree(HTML::TraversableNavigable&);
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void dump_tree(StringBuilder&, DOM::Node const&);
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void dump_tree(DOM::Node const&);
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void dump_tree(StringBuilder&, Layout::Node const&, bool show_box_model = false, bool show_cascaded_properties = false, bool colorize = false);
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void dump_tree(Layout::Node const&, bool show_box_model = true, bool show_cascaded_properties = false);
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void dump_tree(StringBuilder&, Painting::Paintable const&, bool colorize = false, int indent = 0);
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void dump_tree(Painting::Paintable const&);
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void dump_sheet(StringBuilder&, CSS::StyleSheet const&);
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void dump_sheet(CSS::StyleSheet const&);
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void dump_rule(StringBuilder&, CSS::CSSRule const&, int indent_levels = 0);
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void dump_rule(CSS::CSSRule const&);
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void dump_declaration(StringBuilder&, CSS::PropertyOwningCSSStyleDeclaration const&, int indent_levels = 0);
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void dump_font_face_rule(StringBuilder&, CSS::CSSFontFaceRule const&, int indent_levels = 0);
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void dump_import_rule(StringBuilder&, CSS::CSSImportRule const&, int indent_levels = 0);
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void dump_media_rule(StringBuilder&, CSS::CSSMediaRule const&, int indent_levels = 0);
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void dump_style_rule(StringBuilder&, CSS::CSSStyleRule const&, int indent_levels = 0);
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void dump_supports_rule(StringBuilder&, CSS::CSSSupportsRule const&, int indent_levels = 0);
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void dump_property_rule(StringBuilder&, CSS::CSSPropertyRule const&, int indent_levels = 0);
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void dump_namespace_rule(StringBuilder&, CSS::CSSNamespaceRule const&, int indent_levels = 0);
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void dump_nested_declarations(StringBuilder&, CSS::CSSNestedDeclarations const&, int indent_levels = 0);
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void dump_layer_block_rule(StringBuilder&, CSS::CSSLayerBlockRule const&, int indent_levels = 0);
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void dump_layer_statement_rule(StringBuilder&, CSS::CSSLayerStatementRule const&, int indent_levels = 0);
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void dump_selector(StringBuilder&, CSS::Selector const&, int indent_levels = 0);
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void dump_selector(CSS::Selector const&);
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}
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