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Code Issues Projects Releases Packages Wiki Activity Actions 10

LibWeb/CSS: Parse and use tech() in @font-face { src }

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This commit is contained in:
Sam Atkins 2025-06-03 12:32:05 +01:00
commit d611806f18
Notes: github-actions[bot] 2025-06-05 11:39:21 +00:00
10 changed files with 131 additions and 35 deletions
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38
Libraries/LibWeb/CSS/FontFace.cpp
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@ -534,35 +534,47 @@ bool font_format_is_supported(FlyString const& name)
return false;
}
bool font_tech_is_supported(FlyString const& name)
bool font_tech_is_supported(FontTech font_tech)
{
// https://drafts.csswg.org/css-fonts-4/#font-tech-definitions
// FIXME: Determine this automatically somehow?
if (name.equals_ignoring_ascii_case("features-opentype"sv))
switch (font_tech) {
case FontTech::FeaturesOpentype:
return true;
if (name.equals_ignoring_ascii_case("features-aat"sv))
case FontTech::FeaturesAat:
return false;
if (name.equals_ignoring_ascii_case("features-graphite"sv))
case FontTech::FeaturesGraphite:
return false;
if (name.equals_ignoring_ascii_case("variations"sv))
case FontTech::Variations:
return true;
if (name.equals_ignoring_ascii_case("color-colrv0"sv))
case FontTech::ColorColrv0:
return true;
if (name.equals_ignoring_ascii_case("color-colrv1"sv))
case FontTech::ColorColrv1:
return true;
if (name.equals_ignoring_ascii_case("color-svg"sv))
case FontTech::ColorSvg:
return false;
if (name.equals_ignoring_ascii_case("color-sbix"sv))
case FontTech::ColorSbix:
return false;
if (name.equals_ignoring_ascii_case("color-cbdt"sv))
case FontTech::ColorCbdt:
return false;
if (name.equals_ignoring_ascii_case("palettes"sv))
case FontTech::Palettes:
return false;
if (name.equals_ignoring_ascii_case("incremental"sv))
case FontTech::Incremental:
return false;
// https://drafts.csswg.org/css-fonts-5/#font-tech-definitions
if (name.equals_ignoring_ascii_case("avar2"sv))
case FontTech::Avar2:
return false;
}
return false;
}
bool font_tech_is_supported(FlyString const& name)
{
if (auto keyword = keyword_from_string(name); keyword.has_value()) {
if (auto font_tech = keyword_to_font_tech(*keyword); font_tech.has_value()) {
return font_tech_is_supported(*font_tech);
}
}
return false;
}