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LibWeb: Make font selection closer to specification

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Add matching on family name, style and weight. This improves the fonts
used by the MDN examples.
This commit is contained in:
Andi Gallo 2023-05-29 02:16:16 +00:00 • committed by Andreas Kling
parent 518679b0dd
commit e48074e401
2 changed files with 96 additions and 10 deletions
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10
Userland/Libraries/LibWeb/CSS/StyleComputer.h
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@ -101,8 +101,17 @@ private:
CreatePseudoElementStyleIfNeeded,
};
class FontLoader;
struct MatchingFontCandidate {
FontFaceKey key;
FontLoader* loader;
};
ErrorOr<RefPtr<StyleProperties>> compute_style_impl(DOM::Element&, Optional<CSS::Selector::PseudoElement>, ComputeStyleMode) const;
ErrorOr<void> compute_cascaded_values(StyleProperties&, DOM::Element&, Optional<CSS::Selector::PseudoElement>, bool& did_match_any_pseudo_element_rules, ComputeStyleMode) const;
static RefPtr<Gfx::Font const> find_matching_font_weight_ascending(Vector<MatchingFontCandidate> const& candidates, int target_weight, float font_size_in_pt, bool inclusive);
static RefPtr<Gfx::Font const> find_matching_font_weight_descending(Vector<MatchingFontCandidate> const& candidates, int target_weight, float font_size_in_pt, bool inclusive);
RefPtr<Gfx::Font const> font_matching_algorithm(FontFaceKey const& key, float font_size_in_pt) const;
void compute_font(StyleProperties&, DOM::Element const*, Optional<CSS::Selector::PseudoElement>) const;
void compute_defaulted_values(StyleProperties&, DOM::Element const*, Optional<CSS::Selector::PseudoElement>) const;
ErrorOr<void> absolutize_values(StyleProperties&, DOM::Element const*, Optional<CSS::Selector::PseudoElement>) const;
@ -159,7 +168,6 @@ private:
OwnPtr<RuleCache> m_author_rule_cache;
OwnPtr<RuleCache> m_user_agent_rule_cache;
class FontLoader;
HashMap<FontFaceKey, NonnullOwnPtr<FontLoader>> m_loaded_fonts;
Length::FontMetrics m_default_font_metrics;