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Editor: Introduces fluid typography and uses Style Engine. 

This commit introduces fluid typography block supports and switches to use the Style Engine for typography and colors.

The motivation for fluid typography block supports:
>"Fluid typography" describes how a site's font sizes adapt to every change in screen size, for example, growing larger as the viewport width increases, or smaller as it decreases.
>
>Font sizes can smoothly scale between minimum and maximum viewport widths.

Typography changes introduced from Gutenberg:

* Uses the Style Engine to generate the CSS and classnames in `wp_apply_typography_support()`.
* Introduces `wp_typography_get_preset_inline_style_value()` for backwards-compatibility.
* Introduces a private internal function called `wp_get_typography_value_and_unit()`, for checking and getting typography unit and value.
* Introduces a private internal function called  `wp_get_computed_fluid_typography_value()`, for an internal implementation of CSS `clamp()`.
* Deprecates `wp_typography_get_css_variable_inline_style()`.

References:
* [https://github.com/WordPress/gutenberg/pull/40332 WordPress/gutenberg PR 40332] Style Engine: add typography and color to backend
* [https://github.com/WordPress/gutenberg/pull/39529 WordPress/gutenberg PR 39529] Block supports: add fluid typography

Follow-up to [53076], [52302], [52069], [51089], [50761], [49226].

Props ramonopoly, youknowriad, aristath, oandregal, aaronrobertshaw, cbirdsong, jorgefilipecosta, ironprogrammer, hellofromTonya.
See #56467.
Built from https://develop.svn.wordpress.org/trunk@54260


git-svn-id: http://core.svn.wordpress.org/trunk@53819 1a063a9b-81f0-0310-95a4-ce76da25c4cd
This commit is contained in:
hellofromTonya 2022-09-20 15:47:09 +00:00
parent e5935d0436
commit b29bbddb5f
4 changed files with 371 additions and 85 deletions
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412
wp-includes/block-supports/typography.php
View File

@ -65,6 +65,7 @@ function wp_register_typography_support( $block_type ) {
* the front-end.
*
* @since 5.6.0
* @since 6.1.0 Used the style engine to generate CSS and classnames.
* @access private
*
* @param WP_Block_Type $block_type Block type.
@ -85,10 +86,6 @@ function wp_apply_typography_support( $block_type, $block_attributes ) {
return array();
}
$attributes = array();
$classes = array();
$styles = array();
$has_font_family_support = _wp_array_get( $typography_supports, array( '__experimentalFontFamily' ), false );
$has_font_size_support = _wp_array_get( $typography_supports, array( 'fontSize' ), false );
$has_font_style_support = _wp_array_get( $typography_supports, array( '__experimentalFontStyle' ), false );
@ -98,119 +95,368 @@ function wp_apply_typography_support( $block_type, $block_attributes ) {
$has_text_decoration_support = _wp_array_get( $typography_supports, array( '__experimentalTextDecoration' ), false );
$has_text_transform_support = _wp_array_get( $typography_supports, array( '__experimentalTextTransform' ), false );
if ( $has_font_size_support && ! wp_should_skip_block_supports_serialization( $block_type, 'typography', 'fontSize' ) ) {
$has_named_font_size = array_key_exists( 'fontSize', $block_attributes );
$has_custom_font_size = isset( $block_attributes['style']['typography']['fontSize'] );
// Whether to skip individual block support features.
$should_skip_font_size = wp_should_skip_block_supports_serialization( $block_type, 'typography', 'fontSize' );
$should_skip_font_family = wp_should_skip_block_supports_serialization( $block_type, 'typography', 'fontFamily' );
$should_skip_font_style = wp_should_skip_block_supports_serialization( $block_type, 'typography', 'fontStyle' );
$should_skip_font_weight = wp_should_skip_block_supports_serialization( $block_type, 'typography', 'fontWeight' );
$should_skip_line_height = wp_should_skip_block_supports_serialization( $block_type, 'typography', 'lineHeight' );
$should_skip_text_decoration = wp_should_skip_block_supports_serialization( $block_type, 'typography', 'textDecoration' );
$should_skip_text_transform = wp_should_skip_block_supports_serialization( $block_type, 'typography', 'textTransform' );
$should_skip_letter_spacing = wp_should_skip_block_supports_serialization( $block_type, 'typography', 'letterSpacing' );
if ( $has_named_font_size ) {
$classes[] = sprintf( 'has-%s-font-size', _wp_to_kebab_case( $block_attributes['fontSize'] ) );
} elseif ( $has_custom_font_size ) {
$styles[] = sprintf( 'font-size: %s;', $block_attributes['style']['typography']['fontSize'] );
}
$typography_block_styles = array();
if ( $has_font_size_support && ! $should_skip_font_size ) {
$preset_font_size = array_key_exists( 'fontSize', $block_attributes )
? "var:preset|font-size|{$block_attributes['fontSize']}"
: null;
$custom_font_size = isset( $block_attributes['style']['typography']['fontSize'] )
? $block_attributes['style']['typography']['fontSize']
: null;
$typography_block_styles['fontSize'] = $preset_font_size ? $preset_font_size : $custom_font_size;
}
if ( $has_font_family_support && ! wp_should_skip_block_supports_serialization( $block_type, 'typography', 'fontFamily' ) ) {
$has_named_font_family = array_key_exists( 'fontFamily', $block_attributes );
$has_custom_font_family = isset( $block_attributes['style']['typography']['fontFamily'] );
if ( $has_named_font_family ) {
$classes[] = sprintf( 'has-%s-font-family', _wp_to_kebab_case( $block_attributes['fontFamily'] ) );
} elseif ( $has_custom_font_family ) {
// Before using classes, the value was serialized as a CSS Custom Property.
// We don't need this code path when it lands in core.
$font_family_custom = $block_attributes['style']['typography']['fontFamily'];
if ( strpos( $font_family_custom, 'var:preset|font-family' ) !== false ) {
$index_to_splice = strrpos( $font_family_custom, '|' ) + 1;
$font_family_slug = _wp_to_kebab_case( substr( $font_family_custom, $index_to_splice ) );
$font_family_custom = sprintf( 'var(--wp--preset--font-family--%s)', $font_family_slug );
}
$styles[] = sprintf( 'font-family: %s;', $font_family_custom );
}
if ( $has_font_family_support && ! $should_skip_font_family ) {
$preset_font_family = array_key_exists( 'fontFamily', $block_attributes )
? "var:preset|font-family|{$block_attributes['fontFamily']}"
: null;
$custom_font_family = isset( $block_attributes['style']['typography']['fontFamily'] )
? wp_typography_get_preset_inline_style_value( $block_attributes['style']['typography']['fontFamily'], 'font-family' )
: null;
$typography_block_styles['fontFamily'] = $preset_font_family ? $preset_font_family : $custom_font_family;
}
if ( $has_font_style_support && ! wp_should_skip_block_supports_serialization( $block_type, 'typography', 'fontStyle' ) ) {
$font_style = wp_typography_get_css_variable_inline_style( $block_attributes, 'fontStyle', 'font-style' );
if ( $font_style ) {
$styles[] = $font_style;
}
if (
$has_font_style_support &&
! $should_skip_font_style &&
isset( $block_attributes['style']['typography']['fontStyle'] )
) {
$typography_block_styles['fontStyle'] = wp_typography_get_preset_inline_style_value(
$block_attributes['style']['typography']['fontStyle'],
'font-style'
);
}
if ( $has_font_weight_support && ! wp_should_skip_block_supports_serialization( $block_type, 'typography', 'fontWeight' ) ) {
$font_weight = wp_typography_get_css_variable_inline_style( $block_attributes, 'fontWeight', 'font-weight' );
if ( $font_weight ) {
$styles[] = $font_weight;
}
if (
$has_font_weight_support &&
! $should_skip_font_weight &&
isset( $block_attributes['style']['typography']['fontWeight'] )
) {
$typography_block_styles['fontWeight'] = wp_typography_get_preset_inline_style_value(
$block_attributes['style']['typography']['fontWeight'],
'font-weight'
);
}
if ( $has_line_height_support && ! wp_should_skip_block_supports_serialization( $block_type, 'typography', 'lineHeight' ) ) {
$has_line_height = isset( $block_attributes['style']['typography']['lineHeight'] );
if ( $has_line_height ) {
$styles[] = sprintf( 'line-height: %s;', $block_attributes['style']['typography']['lineHeight'] );
}
if ( $has_line_height_support && ! $should_skip_line_height ) {
$typography_block_styles['lineHeight'] = _wp_array_get( $block_attributes, array( 'style', 'typography', 'lineHeight' ) );
}
if ( $has_text_decoration_support && ! wp_should_skip_block_supports_serialization( $block_type, 'typography', 'textDecoration' ) ) {
$text_decoration_style = wp_typography_get_css_variable_inline_style( $block_attributes, 'textDecoration', 'text-decoration' );
if ( $text_decoration_style ) {
$styles[] = $text_decoration_style;
}
if (
$has_text_decoration_support &&
! $should_skip_text_decoration &&
isset( $block_attributes['style']['typography']['textDecoration'] )
) {
$typography_block_styles['textDecoration'] = wp_typography_get_preset_inline_style_value(
$block_attributes['style']['typography']['textDecoration'],
'text-decoration'
);
}
if ( $has_text_transform_support && ! wp_should_skip_block_supports_serialization( $block_type, 'typography', 'textTransform' ) ) {
$text_transform_style = wp_typography_get_css_variable_inline_style( $block_attributes, 'textTransform', 'text-transform' );
if ( $text_transform_style ) {
$styles[] = $text_transform_style;
}
if (
$has_text_transform_support &&
! $should_skip_text_transform &&
isset( $block_attributes['style']['typography']['textTransform'] )
) {
$typography_block_styles['textTransform'] = wp_typography_get_preset_inline_style_value(
$block_attributes['style']['typography']['textTransform'],
'text-transform'
);
}
if ( $has_letter_spacing_support && ! wp_should_skip_block_supports_serialization( $block_type, 'typography', 'letterSpacing' ) ) {
$letter_spacing_style = wp_typography_get_css_variable_inline_style( $block_attributes, 'letterSpacing', 'letter-spacing' );
if ( $letter_spacing_style ) {
$styles[] = $letter_spacing_style;
}
if (
$has_letter_spacing_support &&
! $should_skip_letter_spacing &&
isset( $block_attributes['style']['typography']['letterSpacing'] )
) {
$typography_block_styles['letterSpacing'] = wp_typography_get_preset_inline_style_value(
$block_attributes['style']['typography']['letterSpacing'],
'letter-spacing'
);
}
if ( ! empty( $classes ) ) {
$attributes['class'] = implode( ' ', $classes );
$attributes = array();
$styles = wp_style_engine_get_styles(
array( 'typography' => $typography_block_styles ),
array( 'convert_vars_to_classnames' => true )
);
if ( ! empty( $styles['classnames'] ) ) {
$attributes['class'] = $styles['classnames'];
}
if ( ! empty( $styles ) ) {
$attributes['style'] = implode( ' ', $styles );
if ( ! empty( $styles['css'] ) ) {
$attributes['style'] = $styles['css'];
}
return $attributes;
}
/**
* Generates an inline style for a typography feature e.g. text decoration,
* Generates an inline style value for a typography feature e.g. text decoration,
* text transform, and font style.
*
* @since 5.8.0
* Note: This function is for backwards compatibility.
* * It is necessary to parse older blocks whose typography styles contain presets.
* * It mostly replaces the deprecated `wp_typography_get_css_variable_inline_style()`,
* but skips compiling a CSS declaration as the style engine takes over this role.
* @link https://github.com/wordpress/gutenberg/pull/27555
*
* @since 6.1.0
*
* @param string $style_value A raw style value for a single typography feature from a block's style attribute.
* @param string $css_property Slug for the CSS property the inline style sets.
* @return string A CSS inline style value.
*/
function wp_typography_get_preset_inline_style_value( $style_value, $css_property ) {
// If the style value is not a preset CSS variable go no further.
if ( empty( $style_value ) || ! str_contains( $style_value, "var:preset|{$css_property}|" ) ) {
return $style_value;
}
/*
* For backwards compatibility.
* Presets were removed in WordPress/gutenberg#27555.
* A preset CSS variable is the style.
* Gets the style value from the string and return CSS style.
*/
$index_to_splice = strrpos( $style_value, '|' ) + 1;
$slug = _wp_to_kebab_case( substr( $style_value, $index_to_splice ) );
// Return the actual CSS inline style value,
// e.g. `var(--wp--preset--text-decoration--underline);`.
return sprintf( 'var(--wp--preset--%s--%s);', $css_property, $slug );
}
/**
* Checks a string for a unit and value and returns an array
* consisting of `'value'` and `'unit'`, e.g., [ '42', 'rem' ].
*
* @since 6.1.0
* @access private
*
* @param array $attributes Block's attributes.
* @param string $feature Key for the feature within the typography styles.
* @param string $css_property Slug for the CSS property the inline style sets.
* @return string CSS inline style.
* @param string $raw_value Raw size value from theme.json.
* @param array $options {
* Optional. An associative array of options. Default is empty array.
*
* @type string $coerce_to Coerce the value to rem or px. Default `'rem'`.
* @type int $root_size_value Value of root font size for rem|em <-> px conversion. Default `16`.
* @type string[] $acceptable_units An array of font size units. Default `[ 'rem', 'px', 'em' ]`;
* }
* @return array|null An array consisting of `'value'` and `'unit'` properties on success.
* `null` on failure.
*/
function wp_typography_get_css_variable_inline_style( $attributes, $feature, $css_property ) {
// Retrieve current attribute value or skip if not found.
$style_value = _wp_array_get( $attributes, array( 'style', 'typography', $feature ), false );
if ( ! $style_value ) {
return;
function wp_get_typography_value_and_unit( $raw_value, $options = array() ) {
if ( empty( $raw_value ) ) {
return null;
}
// If we don't have a preset CSS variable, we'll assume it's a regular CSS value.
if ( strpos( $style_value, "var:preset|{$css_property}|" ) === false ) {
return sprintf( '%s:%s;', $css_property, $style_value );
$defaults = array(
'coerce_to' => '',
'root_size_value' => 16,
'acceptable_units' => array( 'rem', 'px', 'em' ),
);
$options = wp_parse_args( $options, $defaults );
$acceptable_units_group = implode( '|', $options['acceptable_units'] );
$pattern = '/^(\d*\.?\d+)(' . $acceptable_units_group . '){1,1}$/';
preg_match( $pattern, $raw_value, $matches );
// Bails out if not a number value and a px or rem unit.
if ( ! isset( $matches[1] ) || ! isset( $matches[2] ) ) {
return null;
}
// We have a preset CSS variable as the style.
// Get the style value from the string and return CSS style.
$index_to_splice = strrpos( $style_value, '|' ) + 1;
$slug = substr( $style_value, $index_to_splice );
$value = $matches[1];
$unit = $matches[2];
// Return the actual CSS inline style e.g. `text-decoration:var(--wp--preset--text-decoration--underline);`.
return sprintf( '%s:var(--wp--preset--%s--%s);', $css_property, $css_property, $slug );
// Default browser font size. Later, possibly could inject some JS to
// compute this `getComputedStyle( document.querySelector( "html" ) ).fontSize`.
if ( 'px' === $options['coerce_to'] && ( 'em' === $unit || 'rem' === $unit ) ) {
$value = $value * $options['root_size_value'];
$unit = $options['coerce_to'];
}
if ( 'px' === $unit && ( 'em' === $options['coerce_to'] || 'rem' === $options['coerce_to'] ) ) {
$value = $value / $options['root_size_value'];
$unit = $options['coerce_to'];
}
return array(
'value' => $value,
'unit' => $unit,
);
}
/**
* Internal implementation of CSS clamp() based on available min/max viewport
* width and min/max font sizes.
*
* @since 6.1.0
* @access private
*
* @param array $args {
* Optional. An associative array of values to calculate a fluid formula
* for font size. Default is empty array.
*
* @type string $maximum_viewport_width Maximum size up to which type will have fluidity.
* @type string $minimum_viewport_width Minimum viewport size from which type will have fluidity.
* @type string $maximum_font_size Maximum font size for any clamp() calculation.
* @type string $minimum_font_size Minimum font size for any clamp() calculation.
* @type int $scale_factor A scale factor to determine how fast a font scales within boundaries.
* }
* @return string|null A font-size value using clamp() on success. Else, null.
*/
function wp_get_computed_fluid_typography_value( $args = array() ) {
$maximum_viewport_width_raw = isset( $args['maximum_viewport_width'] ) ? $args['maximum_viewport_width'] : null;
$minimum_viewport_width_raw = isset( $args['minimum_viewport_width'] ) ? $args['minimum_viewport_width'] : null;
$maximum_font_size_raw = isset( $args['maximum_font_size'] ) ? $args['maximum_font_size'] : null;
$minimum_font_size_raw = isset( $args['minimum_font_size'] ) ? $args['minimum_font_size'] : null;
$scale_factor = isset( $args['scale_factor'] ) ? $args['scale_factor'] : null;
// Grab the minimum font size and normalize it in order to use the value for calculations.
$minimum_font_size = wp_get_typography_value_and_unit( $minimum_font_size_raw );
// We get a 'preferred' unit to keep units consistent when calculating, otherwise the result will not be accurate.
$font_size_unit = isset( $minimum_font_size['unit'] ) ? $minimum_font_size['unit'] : 'rem';
// Grab the maximum font size and normalize it in order to use the value for calculations.
$maximum_font_size = wp_get_typography_value_and_unit(
$maximum_font_size_raw,
array(
'coerce_to' => $font_size_unit,
)
);
// Protect against unsupported units.
if ( ! $maximum_font_size || ! $minimum_font_size ) {
return null;
}
// Use rem for accessible fluid target font scaling.
$minimum_font_size_rem = wp_get_typography_value_and_unit(
$minimum_font_size_raw,
array(
'coerce_to' => 'rem',
)
);
// Viewport widths defined for fluid typography. Normalize units.
$maximum_viewport_width = wp_get_typography_value_and_unit(
$maximum_viewport_width_raw,
array(
'coerce_to' => $font_size_unit,
)
);
$minimum_viewport_width = wp_get_typography_value_and_unit(
$minimum_viewport_width_raw,
array(
'coerce_to' => $font_size_unit,
)
);
/*
* Build CSS rule.
* Borrowed from https://websemantics.uk/tools/responsive-font-calculator/.
*/
$view_port_width_offset = round( $minimum_viewport_width['value'] / 100, 3 ) . $font_size_unit;
$linear_factor = 100 * ( ( $maximum_font_size['value'] - $minimum_font_size['value'] ) / ( $maximum_viewport_width['value'] - $minimum_viewport_width['value'] ) );
$linear_factor = round( $linear_factor, 3 ) * $scale_factor;
$fluid_target_font_size = implode( '', $minimum_font_size_rem ) . " + ((1vw - $view_port_width_offset) * $linear_factor)";
return "clamp($minimum_font_size_raw, $fluid_target_font_size, $maximum_font_size_raw)";
}
/**
* Returns a font-size value based on a given font-size preset.
* Takes into account fluid typography parameters and attempts to return a CSS
* formula depending on available, valid values.
*
* @since 6.1.0
*
* @param array $preset {
* Required. fontSizes preset value as seen in theme.json.
*
* @type string $name Name of the font size preset.
* @type string $slug Kebab-case unique identifier for the font size preset.
* @type string $size CSS font-size value, including units where applicable.
* }
* @param bool $should_use_fluid_typography An override to switch fluid typography "on". Can be used for unit testing.
* Default is `false`.
* @return string Font-size value.
*/
function wp_get_typography_font_size_value( $preset, $should_use_fluid_typography = false ) {
// Checks if fluid font sizes are activated.
$typography_settings = wp_get_global_settings( array( 'typography' ) );
$should_use_fluid_typography = isset( $typography_settings['fluid'] ) && true === $typography_settings['fluid'] ? true : $should_use_fluid_typography;
if ( ! $should_use_fluid_typography ) {
return $preset['size'];
}
// Defaults.
$default_maximum_viewport_width = '1600px';
$default_minimum_viewport_width = '768px';
$default_minimum_font_size_factor = 0.75;
$default_maximum_font_size_factor = 1.5;
$default_scale_factor = 1;
// Font sizes.
$fluid_font_size_settings = isset( $preset['fluid'] ) ? $preset['fluid'] : null;
// A font size has explicitly bypassed fluid calculations.
if ( false === $fluid_font_size_settings ) {
return $preset['size'];
}
// Try to grab explicit min and max fluid font sizes.
$minimum_font_size_raw = isset( $fluid_font_size_settings['min'] ) ? $fluid_font_size_settings['min'] : null;
$maximum_font_size_raw = isset( $fluid_font_size_settings['max'] ) ? $fluid_font_size_settings['max'] : null;
// Font sizes.
$preferred_size = wp_get_typography_value_and_unit( $preset['size'] );
// Protect against unsupported units.
if ( empty( $preferred_size['unit'] ) ) {
return $preset['size'];
}
// If no fluid min or max font sizes are available, create some using min/max font size factors.
if ( ! $minimum_font_size_raw ) {
$minimum_font_size_raw = ( $preferred_size['value'] * $default_minimum_font_size_factor ) . $preferred_size['unit'];
}
if ( ! $maximum_font_size_raw ) {
$maximum_font_size_raw = ( $preferred_size['value'] * $default_maximum_font_size_factor ) . $preferred_size['unit'];
}
$fluid_font_size_value = wp_get_computed_fluid_typography_value(
array(
'minimum_viewport_width' => $default_minimum_viewport_width,
'maximum_viewport_width' => $default_maximum_viewport_width,
'minimum_font_size' => $minimum_font_size_raw,
'maximum_font_size' => $maximum_font_size_raw,
'scale_factor' => $default_scale_factor,
)
);
if ( ! empty( $fluid_font_size_value ) ) {
return $fluid_font_size_value;
}
return $preset['size'];
}
// Register the block support.

2
wp-includes/class-wp-theme-json.php
View File

@ -150,7 +150,7 @@ class WP_Theme_JSON {
'path' => array( 'typography', 'fontSizes' ),
'prevent_override' => false,
'use_default_names' => true,
'value_key' => 'size',
'value_func' => 'wp_get_typography_font_size_value',
'css_vars' => '--wp--preset--font-size--$slug',
'classes' => array( '.has-$slug-font-size' => 'font-size' ),
'properties' => array( 'font-size' ),

40
wp-includes/deprecated.php
View File

@ -4456,3 +4456,43 @@ function _get_path_to_translation_from_lang_dir( $domain ) {
_deprecated_function( __FUNCTION__, '6.1.0' );
return $metadata;
}
/**
* Generates an inline style for a typography feature e.g. text decoration,
* text transform, and font style.
*
* @since 5.8.0
* @access private
* @deprecated 6.1.0 Use wp_style_engine_get_styles() introduced in 6.1.0.
*
* @see wp_style_engine_get_styles()
*
* @param array $attributes Block's attributes.
* @param string $feature Key for the feature within the typography styles.
* @param string $css_property Slug for the CSS property the inline style sets.
* @return string CSS inline style.
*/
function wp_typography_get_css_variable_inline_style( $attributes, $feature, $css_property ) {
_deprecated_function( __FUNCTION__, '6.1.0', 'wp_style_engine_get_styles()' );
// Retrieve current attribute value or skip if not found.
$style_value = _wp_array_get( $attributes, array( 'style', 'typography', $feature ), false );
if ( ! $style_value ) {
return;
}
// If we don't have a preset CSS variable, we'll assume it's a regular CSS value.
if ( strpos( $style_value, "var:preset|{$css_property}|" ) === false ) {
return sprintf( '%s:%s;', $css_property, $style_value );
}
/*
* We have a preset CSS variable as the style.
* Get the style value from the string and return CSS style.
*/
$index_to_splice = strrpos( $style_value, '|' ) + 1;
$slug = substr( $style_value, $index_to_splice );
// Return the actual CSS inline style e.g. `text-decoration:var(--wp--preset--text-decoration--underline);`.
return sprintf( '%s:var(--wp--preset--%s--%s);', $css_property, $css_property, $slug );
}

2
wp-includes/version.php
View File

@ -16,7 +16,7 @@
*
* @global string $wp_version
*/
$wp_version = '6.1-alpha-54259';
$wp_version = '6.1-alpha-54260';
/**
* Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.