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LibWeb: Implement and use FontStyleValue

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After working with the code for a while, it makes more sense to put all
the parsing in Parser, instead of some of it living in StyleResolver.
That means our current ValueListStyleValue needs to be replaced with
specific StyleValue types for the properties that are shorthands or
otherwise combine several values together.

Here we implement FontStyleProperty, which represents a `font` CSS
property.

Also adjusted the fonts.html test page so that font-weights are featured
in test cases without things we do not yet support.
This commit is contained in:
Sam Atkins 2021-08-03 11:37:24 +01:00 • committed by Andreas Kling
parent 5e1fad2dff
commit 59501f1940
5 changed files with 247 additions and 164 deletions
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Userland/Libraries/LibWeb/CSS/Parser/Parser.h
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@ -176,6 +176,7 @@ private:
static RefPtr<StyleValue> parse_string_value(ParsingContext const&, StyleComponentValueRule const&);
static RefPtr<StyleValue> parse_image_value(ParsingContext const&, StyleComponentValueRule const&);
static RefPtr<StyleValue> parse_box_shadow_value(ParsingContext const&, Vector<StyleComponentValueRule> const&);
static RefPtr<StyleValue> parse_font_value(ParsingContext const&, Vector<StyleComponentValueRule> const&);
// calc() parsing, according to https://www.w3.org/TR/css-values-3/#calc-syntax
static OwnPtr<CalculatedStyleValue::CalcSum> parse_calc_sum(ParsingContext const&, TokenStream<StyleComponentValueRule>&);