mirror of
https://github.com/material-components/material-web.git
synced 2024-10-26 21:56:56 +03:00
36dd77ef97
Fixes #1050 View the updated [typography docs](https://github.com/material-components/material-web/blob/main/docs/theming/typography.md#classes) for more info. PiperOrigin-RevId: 613259080
158 lines
5.2 KiB
SCSS
158 lines
5.2 KiB
SCSS
//
|
|
// Copyright 2023 Google LLC
|
|
// SPDX-License-Identifier: Apache-2.0
|
|
//
|
|
|
|
// go/keep-sorted start
|
|
@use 'sass:list';
|
|
@use 'sass:map';
|
|
// go/keep-sorted end
|
|
// go/keep-sorted start
|
|
@use '../tokens';
|
|
// go/keep-sorted end
|
|
|
|
/// `typescale.theme()` emits `--md-sys-typescale-*` custom properties for given
|
|
/// typescale tokens.
|
|
///
|
|
/// Use `typeface.theme()` to change font family and weight for all typescales,
|
|
/// rather than individually.
|
|
///
|
|
/// @example scss
|
|
/// @use '@material/web/typography/typescale';
|
|
///
|
|
/// :root {
|
|
/// @include typescale.theme((
|
|
/// 'body-medium-size': 1rem,
|
|
/// 'body-medium-line-height': 1.5rem,
|
|
/// /* ... */
|
|
/// ));
|
|
/// }
|
|
///
|
|
/// /* Generated CSS */
|
|
/// :root {
|
|
/// --md-sys-typescale-body-medium-size: 1rem;
|
|
/// --md-sys-typescale-body-medium-line-height: 1.5rem;
|
|
/// /* ... */
|
|
/// }
|
|
///
|
|
/// @param {Map} $tokens - A Map with `md-sys-typescale` token name keys and
|
|
/// their corresponding `font` shorthand values.
|
|
/// @output Emits `--md-sys-typescale-*` custom properties for given typescales.
|
|
@mixin theme($tokens) {
|
|
@each $token, $value in $tokens {
|
|
@if list.index(tokens.$md-sys-typescale-supported-tokens, $token) == null {
|
|
@error 'md-sys-typescale `#{$token}` is not a supported token.';
|
|
}
|
|
|
|
@if $value {
|
|
--md-sys-typescale-#{$token}: #{$value};
|
|
}
|
|
}
|
|
}
|
|
|
|
/// Emits `.md-typescale-*` classes with font styles for each typescale in the
|
|
/// provided `$tokens`.
|
|
///
|
|
/// @example scss
|
|
/// @include typescale.styles(tokens.md-sys-typescale-values());
|
|
/// // Generates the following CSS:
|
|
/// .md-typescale-display-small { font: ...; }
|
|
/// .md-typescale-display-medium { font: ...; }
|
|
/// .md-typescale-display-large { font: ...; }
|
|
/// .md-typescale-body-small { font: ...; }
|
|
/// .md-typescale-body-medium { font: ...; }
|
|
/// .md-typescale-body-large { font: ...; }
|
|
/// // etc...
|
|
///
|
|
/// @param {Map} $tokens - A Map with `md-sys-typescale` token values.
|
|
/// @output Emits `.md-typescale-*` classes for each typescale size.
|
|
@mixin styles($tokens) {
|
|
$typescale-properties: _tokens-to-typescale-properties-map($tokens);
|
|
|
|
// Use the default layer for lowered specificity.
|
|
@layer {
|
|
@each $typescale, $properties in $typescale-properties {
|
|
// $typescale is a scale and size (ex. 'body-medium').
|
|
// $properties is a Map with 'font', 'size', 'line-height', 'weight', and
|
|
// an optional 'weight-prominent'.
|
|
.md-typescale-#{$typescale} {
|
|
font: map.get($properties, 'weight')
|
|
map.get($properties, 'size') /
|
|
map.get($properties, 'line-height')
|
|
map.get($properties, 'font');
|
|
}
|
|
|
|
.md-typescale-#{$typescale}-prominent {
|
|
// Inherit the font styles from the non-prominent selector. This adds
|
|
// another class selector to the regular styles, instead of re-emitting
|
|
// them.
|
|
// ```
|
|
// .md-typescale-label-medium, .md-typescale-label-medium-prominent {
|
|
// font: ...;
|
|
// }
|
|
// .md-typescale-label-medium-prominent {
|
|
// font-weight: ...;
|
|
// }
|
|
// ```
|
|
@extend .md-typescale-#{$typescale};
|
|
|
|
// Note: the prominent selector is not emitted by Sass when a
|
|
// typescale's prominent values are null.
|
|
font-weight: map.get($properties, 'weight-prominent');
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/// Takes a md-sys-typescale token values Map and returns a Map whose keys are
|
|
/// typescale names ('body-medium', 'label-large', etc) and whose values are a
|
|
/// Map of properties for that Typescale ('font', 'size', etc).
|
|
@function _tokens-to-typescale-properties-map($tokens) {
|
|
$typescale-properties: ();
|
|
// The keys of $typescale-properties. Each typescale is joined with each size
|
|
// ('display-small', 'display-medium', 'display-large', 'headline-small'...).
|
|
$typescales: ('display', 'headline', 'title', 'body', 'label');
|
|
$sizes: ('small', 'medium', 'large');
|
|
// The keys to the Map for each scale in $typescale-properties. These
|
|
// properties are required...
|
|
$required-properties: ('font', 'line-height', 'size', 'weight');
|
|
// ...while not all typescales have these properties.
|
|
$optional-properties: ('weight-prominent');
|
|
$properties: list.join($required-properties, $optional-properties);
|
|
|
|
@each $typescale in $typescales {
|
|
@each $size in $sizes {
|
|
$typescale-and-size: #{$typescale}-#{$size};
|
|
|
|
@each $property in $properties {
|
|
$token: '#{$typescale-and-size}-#{$property}';
|
|
$value: map.get($tokens, $token);
|
|
@if $value ==
|
|
null and
|
|
list.index($required-properties, $property) !=
|
|
null
|
|
{
|
|
@error 'Missing required typescale token `#{$token}`';
|
|
}
|
|
|
|
// Remove token to check if we used them all at the end of the function.
|
|
$tokens: map.remove($tokens, $token);
|
|
$typescale-properties: map.set(
|
|
$typescale-properties,
|
|
$typescale-and-size,
|
|
$property,
|
|
$value
|
|
);
|
|
}
|
|
}
|
|
}
|
|
|
|
$unused-tokens: map.keys($tokens);
|
|
$unused-token-count: list.length($unused-tokens);
|
|
@if $unused-token-count > 0 {
|
|
@error 'Missing styles for #{$unused-token-count} typescale tokens (#{$unused-tokens})';
|
|
}
|
|
|
|
@return $typescale-properties;
|
|
}
|