@font-feature-values

概要

@font-feature-values CSS at-rule 允许作者在font-variant-alternates 中使用通用名称,用于在 OpenType 中以不同方式激活功能。它允许在使用几种字体时简化 CSS。

@font-feature-values Font One { /* How to activate nice-style in Font One */
  @styleset {
    nice-style: 12;
  }
}

@font-feature-values Font Two { /* How to activate nice-style in Font Two */
  @styleset {
    nice-style: 4;
  }
}

…

.nice-look { font-variant-alternates: styleset(nice-style); } /* Independent of the font */

The @font-feature-values at-rule may be used at the top level of a CSS, but also inside any CSS conditional-group at-rule.

Syntax

Feature value blocks

@swash
Specifies a feature name that will work with the swash() functional notation of font-variant-alternates. A swash feature value definition allows only one value: ident1: 2 is valid when ident2: 2 4 isn't.
@annotation
Specifies a feature name that will work with the annotation() functional notation of font-variant-alternates. An annotation feature value definition allows only one value: ident1: 2 is valid when ident2: 2 4 isn't.
@ornaments
Specifies a feature name that will work with the ornaments() functional notation of font-variant-alternates. An ornaments feature value definition allows only one value: ident1: 2 is valid when ident2: 2 4 isn't.
@stylistic
Specifies a feature name that will work with the stylistic() functional notation of font-variant-alternates. A stylistice feature value definition allows only one value: ident1: 2 is valid when ident2: 2 4 isn't.
@styleset
Specifies a feature name that will work with the styleset() functional notation of font-variant-alternates. A stylset feature value definition allows and illimited amount of values: ident1: 2 4 12 1maps to the OpenType values ss02, ss04, ss12, ss01. Note that values higher than 99 are valid, but doesn't map to any OpenType values and are ignored.
@character-variant
Specifies a feature name that will work with the character-variant() functional notation of font-variant-alternates. A character-variant feature value definition allows one or two values: ident1: 2  maps to cv02=1 and ident2: 2 4 maps to cv02)4 and ident2: 2 4 5 isn't valid.

Formal syntax

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Specifications

Specification Status Comment
CSS Fonts Module Level 3
@font-feature-values
Recommendation Initial definition

Browser compatibility

BCD tables only load in the browser

See also