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LibWeb: Add ic and ric Length units

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Using the rough heuristic instead of the actual spec measurement. It's
allowed by the spec, but not ideal:

> In the cases where it is impossible or impractical to determine the
  ideographic advance measure, it must be assumed to be 1em.
This commit is contained in:
Sam Atkins 2023-04-28 17:18:18 +01:00 • committed by Andreas Kling
parent 03ed37eb14
commit 0dd585ba7b
2 changed files with 18 additions and 0 deletions
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14
Userland/Libraries/LibWeb/CSS/Length.cpp
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@ -89,6 +89,12 @@ CSSPixels Length::relative_length_to_px(CSSPixelRect const& viewport_rect, FontM
return m_value * font_metrics.zero_advance;
case Type::Rch:
return m_value * root_font_metrics.zero_advance;
case Type::Ic:
// FIXME: Use the "advance measure of the “水” (CJK water ideograph, U+6C34) glyph"
return m_value * font_metrics.font_size;
case Type::Ric:
// FIXME: Use the "advance measure of the “水” (CJK water ideograph, U+6C34) glyph"
return m_value * root_font_metrics.font_size;
case Type::Lh:
return m_value * font_metrics.line_height;
case Type::Rlh:
@ -158,6 +164,10 @@ char const* Length::unit_name() const
return "ch";
case Type::Rch:
return "rch";
case Type::Ic:
return "ic";
case Type::Ric:
return "ric";
case Type::Lh:
return "lh";
case Type::Rlh:
@ -208,6 +218,10 @@ Optional<Length::Type> Length::unit_from_name(StringView name)
return Length::Type::Ch;
} else if (name.equals_ignoring_ascii_case("rch"sv)) {
return Length::Type::Rch;
} else if (name.equals_ignoring_ascii_case("ic"sv)) {
return Length::Type::Ic;
} else if (name.equals_ignoring_ascii_case("ric"sv)) {
return Length::Type::Ric;
} else if (name.equals_ignoring_ascii_case("lh"sv)) {
return Length::Type::Lh;
} else if (name.equals_ignoring_ascii_case("rlh"sv)) {