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copybara-service merged 1 commit into from
May 5, 2026
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chore: add variable font and emphasized typescales #5967

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100 changes: 96 additions & 4 deletions labs/gb/styles/tailwind.scss
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Original file line number Diff line number Diff line change
Expand Up @@ -70,50 +70,136 @@
#{'--font-*'}: initial; // Do not use Tailwind's default font utilities.
--font-brand: var(--md-ref-typeface-brand);
--font-plain: var(--md-ref-typeface-plain);
--font-weight-normal: var(--md-ref-typeface-weight-regular);
--font-weight-medium: var(--md-ref-typeface-weight-medium);
--font-weight-bold: var(--md-ref-typeface-weight-bold);
#{'--text-*'}: initial; // Do not use Tailwind's default text utilities.
#{'--tracking-*'}: initial;
#{'--leading-*'}: initial;
// Use the `typescale-<name>-<size>` utility to apply typography tokens.
--typescale-label-sm: var(--md-sys-typescale-label-sm);
--typescale-label-sm-tracking: var(--md-sys-typescale-label-sm-tracking);
--typescale-label-sm-axes: var(--md-sys-typescale-label-sm-axes);
--typescale-label-md: var(--md-sys-typescale-label-md);
--typescale-label-md-tracking: var(--md-sys-typescale-label-md-tracking);
--typescale-label-md-axes: var(--md-sys-typescale-label-md-axes);
--typescale-label-lg: var(--md-sys-typescale-label-lg);
--typescale-label-lg-tracking: var(--md-sys-typescale-label-lg-tracking);
--typescale-label-lg-axes: var(--md-sys-typescale-label-lg-axes);
--typescale-body-sm: var(--md-sys-typescale-body-sm);
--typescale-body-sm-tracking: var(--md-sys-typescale-body-sm-tracking);
--typescale-body-sm-axes: var(--md-sys-typescale-body-sm-axes);
--typescale-body-md: var(--md-sys-typescale-body-md);
--typescale-body-md-tracking: var(--md-sys-typescale-body-md-tracking);
--typescale-body-md-axes: var(--md-sys-typescale-body-md-axes);
--typescale-body-lg: var(--md-sys-typescale-body-lg);
--typescale-body-lg-tracking: var(--md-sys-typescale-body-lg-tracking);
--typescale-body-lg-axes: var(--md-sys-typescale-body-lg-axes);
--typescale-title-sm: var(--md-sys-typescale-title-sm);
--typescale-title-sm-tracking: var(--md-sys-typescale-title-sm-tracking);
--typescale-title-sm-axes: var(--md-sys-typescale-title-sm-axes);
--typescale-title-md: var(--md-sys-typescale-title-md);
--typescale-title-md-tracking: var(--md-sys-typescale-title-md-tracking);
--typescale-title-md-axes: var(--md-sys-typescale-title-md-axes);
--typescale-title-lg: var(--md-sys-typescale-title-lg);
--typescale-title-lg-tracking: var(--md-sys-typescale-title-lg-tracking);
--typescale-title-lg-axes: var(--md-sys-typescale-title-lg-axes);
--typescale-headline-sm: var(--md-sys-typescale-headline-sm);
--typescale-headline-sm-tracking: var(
--md-sys-typescale-headline-sm-tracking
);
--typescale-headline-sm-axes: var(--md-sys-typescale-headline-sm-axes);
--typescale-headline-md: var(--md-sys-typescale-headline-md);
--typescale-headline-md-tracking: var(
--md-sys-typescale-headline-md-tracking
);
--typescale-headline-md-axes: var(--md-sys-typescale-headline-md-axes);
--typescale-headline-lg: var(--md-sys-typescale-headline-lg);
--typescale-headline-lg-tracking: var(
--md-sys-typescale-headline-lg-tracking
);
--typescale-headline-lg-axes: var(--md-sys-typescale-headline-lg-axes);
--typescale-display-sm: var(--md-sys-typescale-display-sm);
--typescale-display-sm-tracking: var(--md-sys-typescale-display-sm-tracking);
--typescale-display-sm-axes: var(--md-sys-typescale-display-sm-axes);
--typescale-display-md: var(--md-sys-typescale-display-md);
--typescale-display-md-tracking: var(--md-sys-typescale-display-md-tracking);
--typescale-display-md-axes: var(--md-sys-typescale-display-md-axes);
--typescale-display-lg: var(--md-sys-typescale-display-lg);
--typescale-display-lg-tracking: var(--md-sys-typescale-display-lg-tracking);
#{'--font-weight-*'}: initial; // Material supports a limited set of font weights.
--font-weight-normal: var(--md-ref-typeface-weight-regular);
--font-weight-medium: var(--md-ref-typeface-weight-medium);
--font-weight-bold: var(--md-ref-typeface-weight-bold);
--typescale-display-lg-axes: var(--md-sys-typescale-display-lg-axes);
--typescale-emphasized-label-sm: var(--md-sys-typescale-emphasized-label-sm);
--typescale-emphasized-label-sm-axes: var(
--md-sys-typescale-emphasized-label-sm-axes
);
--typescale-emphasized-label-md: var(--md-sys-typescale-emphasized-label-md);
--typescale-emphasized-label-md-axes: var(
--md-sys-typescale-emphasized-label-md-axes
);
--typescale-emphasized-label-lg: var(--md-sys-typescale-emphasized-label-lg);
--typescale-emphasized-label-lg-axes: var(
--md-sys-typescale-emphasized-label-lg-axes
);
--typescale-emphasized-body-sm: var(--md-sys-typescale-emphasized-body-sm);
--typescale-emphasized-body-sm-axes: var(
--md-sys-typescale-emphasized-body-sm-axes
);
--typescale-emphasized-body-md: var(--md-sys-typescale-emphasized-body-md);
--typescale-emphasized-body-md-axes: var(
--md-sys-typescale-emphasized-body-md-axes
);
--typescale-emphasized-body-lg: var(--md-sys-typescale-emphasized-body-lg);
--typescale-emphasized-body-lg-axes: var(
--md-sys-typescale-emphasized-body-lg-axes
);
--typescale-emphasized-title-sm: var(--md-sys-typescale-emphasized-title-sm);
--typescale-emphasized-title-sm-axes: var(
--md-sys-typescale-emphasized-title-sm-axes
);
--typescale-emphasized-title-md: var(--md-sys-typescale-emphasized-title-md);
--typescale-emphasized-title-md-axes: var(
--md-sys-typescale-emphasized-title-md-axes
);
--typescale-emphasized-title-lg: var(--md-sys-typescale-emphasized-title-lg);
--typescale-emphasized-title-lg-axes: var(
--md-sys-typescale-emphasized-title-lg-axes
);
--typescale-emphasized-headline-sm: var(
--md-sys-typescale-emphasized-headline-sm
);
--typescale-emphasized-headline-sm-axes: var(
--md-sys-typescale-emphasized-headline-sm-axes
);
--typescale-emphasized-headline-md: var(
--md-sys-typescale-emphasized-headline-md
);
--typescale-emphasized-headline-md-axes: var(
--md-sys-typescale-emphasized-headline-md-axes
);
--typescale-emphasized-headline-lg: var(
--md-sys-typescale-emphasized-headline-lg
);
--typescale-emphasized-headline-lg-axes: var(
--md-sys-typescale-emphasized-headline-lg-axes
);
--typescale-emphasized-display-sm: var(
--md-sys-typescale-emphasized-display-sm
);
--typescale-emphasized-display-sm-axes: var(
--md-sys-typescale-emphasized-display-sm-axes
);
--typescale-emphasized-display-md: var(
--md-sys-typescale-emphasized-display-md
);
--typescale-emphasized-display-md-axes: var(
--md-sys-typescale-emphasized-display-md-axes
);
--typescale-emphasized-display-lg: var(
--md-sys-typescale-emphasized-display-lg
);
--typescale-emphasized-display-lg-axes: var(
--md-sys-typescale-emphasized-display-lg-axes
);

// Shape
--radius-xs: var(--md-sys-shape-corner-xs);
Expand Down Expand Up @@ -149,4 +235,10 @@
@utility typescale-* {
font: #{'--value(--typescale-*)'};
letter-spacing: #{'--value(--typescale-*-tracking)'};
font-variation-settings: #{'--value(--typescale-*-axes)'};
}
@utility typescale-emphasized-* {
font: #{'--value(--typescale-emphasized-*)'};
letter-spacing: #{'--value(--typescale-*-tracking)'};
font-variation-settings: #{'--value(--typescale-emphasized-*-axes)'};
}
101 changes: 85 additions & 16 deletions labs/gb/styles/typography/internal/_typography-tokens.scss
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Original file line number Diff line number Diff line change
Expand Up @@ -4,17 +4,24 @@
//

// go/keep-sorted start by_regex='(.+) prefix_order=sass:
@use 'sass:list';
@use 'sass:map';
@use 'sass:meta';
@use 'sass:string';
@use '../../../../../sass/ext/map_ext';
@use '../../../../../tokens/versions/latest/sass/md-ref-typeface';
@use '../../../../../tokens/versions/latest/sass/md-sys-typescale';
@use '../../../../../tokens/versions/latest/sass/md-sys-typescale-emphasized';
@use '../../../../../tokens/versions/latest/sass/md-sys-typescale-emphasized-meta';
@use '../../../../../tokens/versions/latest/sass/md-sys-typescale-meta';
// go/keep-sorted end

@mixin emit-custom-properties(
$typescale-vars: meta.module-variables(md-sys-typescale),
$typescale-meta: meta.module-variables(md-sys-typescale-meta),
$typescale-emphasized-vars: meta.module-variables(md-sys-typescale-emphasized),
$typescale-emphasized-meta:
meta.module-variables(md-sys-typescale-emphasized-meta),
$typeface-vars:
map.merge(
meta.module-variables(md-ref-typeface),
Expand Down Expand Up @@ -55,26 +62,88 @@
@each $scale in $scales {
@each $long-size, $short-size in $sizes {
$typescale: '#{$scale}-#{$long-size}';
$weight: map_ext.get-strict(
$typescale-meta,
'#{$typescale}-weight--resolved'
);
$size: map_ext.get-strict($typescale-vars, '#{$typescale}-size');
$line-height: map_ext.get-strict(
$typescale-vars,
'#{$typescale}-line-height'

$font: _font($typescale, $typescale-vars, $typescale-meta);
$tracking: map_ext.get-strict($typescale-vars, '#{$typescale}-tracking');
$axes: _axes($typescale, $typescale-vars);
$emphasized-font: _font(
$typescale,
$typescale-emphasized-vars,
$typescale-emphasized-meta
);
$font: map_ext.get-strict(
$typescale-meta,
'#{$typescale}-font--resolved'
$emphasized-axes: _axes-emphasized(
$typescale,
$typescale-emphasized-vars
);
$tracking: map_ext.get-strict($typescale-vars, '#{$typescale}-tracking');

--md-sys-typescale-#{$scale}-#{$short-size}: #{$weight}
#{$size} /
#{$line-height}
#{$font};
--md-sys-typescale-#{$scale}-#{$short-size}: #{$font};
--md-sys-typescale-#{$scale}-#{$short-size}-tracking: #{$tracking};
--md-sys-typescale-#{$scale}-#{$short-size}-axes: #{$axes};
--md-sys-typescale-emphasized-#{$scale}-#{$short-size}: #{$emphasized-font};
--md-sys-typescale-emphasized-#{$scale}-#{$short-size}-axes: #{$emphasized-axes};
}
}
}

/// Returns the `font` shorthand for a typescale from the provided token and
/// metadata variable maps.
@function _font($typescale, $vars, $meta) {
$weight: map_ext.get-strict($meta, '#{$typescale}-weight--resolved');
$size: map_ext.get-strict($vars, '#{$typescale}-size');
$line-height: map_ext.get-strict($vars, '#{$typescale}-line-height');
$family: map_ext.get-strict($meta, '#{$typescale}-font--resolved');
@return #{$weight} #{$size} / #{$line-height} #{$family};
}

/// Returns the `font-variation-settings` value for a typescale from the
/// provided token variable map. Returns `normal` if no axes are changed from
/// their default values.
@function _axes($typescale, $vars) {
$axes: ();
$axes: _append-axis($axes, map_ext.get-strict($vars, '#{$typescale}-rond'));
$axes: _append-axis($axes, map_ext.get-strict($vars, '#{$typescale}-grad'));
@if list.length($axes) == 0 {
@return normal;
}
@return $axes;
}

// TODO: Remove this function once emphasized tokens are fixed to use `'ROND' 100`
@function _axes-emphasized($typescale, $vars) {
$axes: ();
$axes: _append-axis($axes, ('ROND' 100));
$axes: _append-axis($axes, map_ext.get-strict($vars, '#{$typescale}-grad'));
@return $axes;
}

/// Appends a font axis to a list if it is not the default value for the axis.
@function _append-axis($axes, $axis) {
// Not all axes from Carbon are supported in gBreeze.
// - 'opsz': use `font-size`
// - 'slnt': use `font-style`
// - 'wdth': use `font-stretch`/`font-width`
// - 'wght': use `font-weight`
$default-axes: (
'ROND': 0,
'GRAD': 0,
// These axes are unused in Material, but included for Carbon completeness.
'CRSV': 0,
'FILL': 0,
'HEXP': 0,
);
$axis-tag: list.nth($axis, 1);
$axis-value: list.nth($axis, 2);
@if not map.has-key($default-axes, $axis-tag) {
// Do not append unsupported axes.
@return $axes;
}
@if map.get($default-axes, $axis-tag) == $axis-value {
// Do not append axes with default values.
@return $axes;
}

// Manually add quotes since Sass removes them for custom property values,
// even with string.quote().
$axis: '"#{$axis-tag}" #{$axis-value}';
@return list.append($axes, $axis, $separator: comma);
}
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