623 lines
26 KiB
PHP
Executable File
623 lines
26 KiB
PHP
Executable File
<?php
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/**
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* Typography block support flag.
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*
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* @package gutenberg
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*/
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/**
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* Registers the style and typography block attributes for block types that support it.
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*
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* @param WP_Block_Type $block_type Block Type.
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*/
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function gutenberg_register_typography_support( $block_type ) {
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if ( ! $block_type instanceof WP_Block_Type ) {
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return;
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}
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$typography_supports = $block_type->supports['typography'] ?? false;
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if ( ! $typography_supports ) {
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return;
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}
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$has_font_family_support = $typography_supports['__experimentalFontFamily'] ?? false;
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$has_font_size_support = $typography_supports['fontSize'] ?? false;
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$has_font_style_support = $typography_supports['__experimentalFontStyle'] ?? false;
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$has_font_weight_support = $typography_supports['__experimentalFontWeight'] ?? false;
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$has_letter_spacing_support = $typography_supports['__experimentalLetterSpacing'] ?? false;
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$has_line_height_support = $typography_supports['lineHeight'] ?? false;
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$has_text_align_support = $typography_supports['textAlign'] ?? false;
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$has_text_columns_support = $typography_supports['textColumns'] ?? false;
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$has_text_decoration_support = $typography_supports['__experimentalTextDecoration'] ?? false;
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$has_text_transform_support = $typography_supports['__experimentalTextTransform'] ?? false;
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$has_writing_mode_support = $typography_supports['__experimentalWritingMode'] ?? false;
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$has_typography_support = $has_font_family_support
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|| $has_font_size_support
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|| $has_font_style_support
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|| $has_font_weight_support
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|| $has_letter_spacing_support
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|| $has_line_height_support
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|| $has_text_align_support
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|| $has_text_columns_support
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|| $has_text_decoration_support
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|| $has_text_transform_support
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|| $has_writing_mode_support;
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if ( ! $block_type->attributes ) {
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$block_type->attributes = array();
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}
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if ( $has_typography_support && ! array_key_exists( 'style', $block_type->attributes ) ) {
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$block_type->attributes['style'] = array(
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'type' => 'object',
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);
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}
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if ( $has_font_size_support && ! array_key_exists( 'fontSize', $block_type->attributes ) ) {
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$block_type->attributes['fontSize'] = array(
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'type' => 'string',
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);
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}
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if ( $has_font_family_support && ! array_key_exists( 'fontFamily', $block_type->attributes ) ) {
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$block_type->attributes['fontFamily'] = array(
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'type' => 'string',
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);
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}
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}
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/**
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* Add CSS classes and inline styles for typography features such as font sizes
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* to the incoming attributes array. This will be applied to the block markup in
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* the front-end.
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*
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* @param WP_Block_Type $block_type Block type.
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* @param array $block_attributes Block attributes.
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*
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* @return array Typography CSS classes and inline styles.
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*/
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function gutenberg_apply_typography_support( $block_type, $block_attributes ) {
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if ( ! $block_type instanceof WP_Block_Type ) {
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return array();
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}
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$typography_supports = $block_type->supports['typography'] ?? false;
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if ( ! $typography_supports ) {
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return array();
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}
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if ( wp_should_skip_block_supports_serialization( $block_type, 'typography' ) ) {
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return array();
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}
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$has_font_family_support = $typography_supports['__experimentalFontFamily'] ?? false;
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$has_font_size_support = $typography_supports['fontSize'] ?? false;
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$has_font_style_support = $typography_supports['__experimentalFontStyle'] ?? false;
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$has_font_weight_support = $typography_supports['__experimentalFontWeight'] ?? false;
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$has_letter_spacing_support = $typography_supports['__experimentalLetterSpacing'] ?? false;
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$has_line_height_support = $typography_supports['lineHeight'] ?? false;
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$has_text_align_support = $typography_supports['textAlign'] ?? false;
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$has_text_columns_support = $typography_supports['textColumns'] ?? false;
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$has_text_decoration_support = $typography_supports['__experimentalTextDecoration'] ?? false;
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$has_text_transform_support = $typography_supports['__experimentalTextTransform'] ?? false;
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$has_writing_mode_support = $typography_supports['__experimentalWritingMode'] ?? false;
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// Whether to skip individual block support features.
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$should_skip_font_size = wp_should_skip_block_supports_serialization( $block_type, 'typography', 'fontSize' );
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$should_skip_font_family = wp_should_skip_block_supports_serialization( $block_type, 'typography', 'fontFamily' );
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$should_skip_font_style = wp_should_skip_block_supports_serialization( $block_type, 'typography', 'fontStyle' );
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$should_skip_font_weight = wp_should_skip_block_supports_serialization( $block_type, 'typography', 'fontWeight' );
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$should_skip_line_height = wp_should_skip_block_supports_serialization( $block_type, 'typography', 'lineHeight' );
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$should_skip_text_align = wp_should_skip_block_supports_serialization( $block_type, 'typography', 'textAlign' );
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$should_skip_text_columns = wp_should_skip_block_supports_serialization( $block_type, 'typography', 'textColumns' );
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$should_skip_text_decoration = wp_should_skip_block_supports_serialization( $block_type, 'typography', 'textDecoration' );
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$should_skip_text_transform = wp_should_skip_block_supports_serialization( $block_type, 'typography', 'textTransform' );
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$should_skip_letter_spacing = wp_should_skip_block_supports_serialization( $block_type, 'typography', 'letterSpacing' );
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$should_skip_writing_mode = wp_should_skip_block_supports_serialization( $block_type, 'typography', 'writingMode' );
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$typography_block_styles = array();
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if ( $has_font_size_support && ! $should_skip_font_size ) {
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$preset_font_size = array_key_exists( 'fontSize', $block_attributes ) ? "var:preset|font-size|{$block_attributes['fontSize']}" : null;
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$custom_font_size = isset( $block_attributes['style']['typography']['fontSize'] ) ? $block_attributes['style']['typography']['fontSize'] : null;
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$typography_block_styles['fontSize'] = $preset_font_size ? $preset_font_size : gutenberg_get_typography_font_size_value(
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array(
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'size' => $custom_font_size,
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)
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);
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}
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if ( $has_font_family_support && ! $should_skip_font_family ) {
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$preset_font_family = array_key_exists( 'fontFamily', $block_attributes ) ? "var:preset|font-family|{$block_attributes['fontFamily']}" : null;
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$custom_font_family = isset( $block_attributes['style']['typography']['fontFamily'] ) ? gutenberg_typography_get_preset_inline_style_value( $block_attributes['style']['typography']['fontFamily'], 'font-family' ) : null;
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$typography_block_styles['fontFamily'] = $preset_font_family ? $preset_font_family : $custom_font_family;
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}
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if ( $has_font_style_support && ! $should_skip_font_style && isset( $block_attributes['style']['typography']['fontStyle'] ) ) {
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$typography_block_styles['fontStyle'] =
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gutenberg_typography_get_preset_inline_style_value( $block_attributes['style']['typography']['fontStyle'], 'font-style' );
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}
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if ( $has_font_weight_support && ! $should_skip_font_weight && isset( $block_attributes['style']['typography']['fontWeight'] ) ) {
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$typography_block_styles['fontWeight'] =
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gutenberg_typography_get_preset_inline_style_value( $block_attributes['style']['typography']['fontWeight'], 'font-weight' );
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}
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if ( $has_line_height_support && ! $should_skip_line_height ) {
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$typography_block_styles['lineHeight'] = $block_attributes['style']['typography']['lineHeight'] ?? null;
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}
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if ( $has_text_align_support && ! $should_skip_text_align ) {
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$typography_block_styles['textAlign'] = $block_attributes['style']['typography']['textAlign'] ?? null;
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}
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if ( $has_text_columns_support && ! $should_skip_text_columns && isset( $block_attributes['style']['typography']['textColumns'] ) ) {
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$typography_block_styles['textColumns'] = $block_attributes['style']['typography']['textColumns'] ?? null;
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}
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if ( $has_text_decoration_support && ! $should_skip_text_decoration && isset( $block_attributes['style']['typography']['textDecoration'] ) ) {
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$typography_block_styles['textDecoration'] =
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gutenberg_typography_get_preset_inline_style_value( $block_attributes['style']['typography']['textDecoration'], 'text-decoration' );
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}
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if ( $has_text_transform_support && ! $should_skip_text_transform && isset( $block_attributes['style']['typography']['textTransform'] ) ) {
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$typography_block_styles['textTransform'] =
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gutenberg_typography_get_preset_inline_style_value( $block_attributes['style']['typography']['textTransform'], 'text-transform' );
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}
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if ( $has_letter_spacing_support && ! $should_skip_letter_spacing && isset( $block_attributes['style']['typography']['letterSpacing'] ) ) {
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$typography_block_styles['letterSpacing'] =
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gutenberg_typography_get_preset_inline_style_value( $block_attributes['style']['typography']['letterSpacing'], 'letter-spacing' );
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}
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if ( $has_writing_mode_support && ! $should_skip_writing_mode && isset( $block_attributes['style']['typography']['writingMode'] ) ) {
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$typography_block_styles['writingMode'] = $block_attributes['style']['typography']['writingMode'] ?? null;
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}
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$attributes = array();
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$classnames = array();
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$styles = gutenberg_style_engine_get_styles(
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array( 'typography' => $typography_block_styles ),
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array( 'convert_vars_to_classnames' => true )
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);
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if ( ! empty( $styles['classnames'] ) ) {
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$classnames[] = $styles['classnames'];
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}
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if ( $has_text_align_support && ! $should_skip_text_align && isset( $block_attributes['style']['typography']['textAlign'] ) ) {
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$classnames[] = 'has-text-align-' . $block_attributes['style']['typography']['textAlign'];
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}
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if ( ! empty( $classnames ) ) {
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$attributes['class'] = implode( ' ', $classnames );
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}
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if ( ! empty( $styles['css'] ) ) {
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$attributes['style'] = $styles['css'];
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}
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return $attributes;
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}
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/**
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* Generates an inline style value for a typography feature e.g. text decoration,
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* text transform, and font style.
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*
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* Note: This function is for backwards compatibility.
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* * It is necessary to parse older blocks whose typography styles contain presets.
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* * It mostly replaces the deprecated `wp_typography_get_css_variable_inline_style()`,
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* but skips compiling a CSS declaration as the style engine takes over this role.
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*
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* @link https://github.com/wordpress/gutenberg/pull/27555
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*
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* @since 6.1.0
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*
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* @param string $style_value A raw style value for a single typography feature from a block's style attribute.
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* @param string $css_property Slug for the CSS property the inline style sets.
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* @return string A CSS inline style value.
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*/
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function gutenberg_typography_get_preset_inline_style_value( $style_value, $css_property ) {
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// If the style value is not a preset CSS variable go no further.
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if ( empty( $style_value ) || ! str_contains( $style_value, "var:preset|{$css_property}|" ) ) {
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return $style_value;
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}
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/*
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* For backwards compatibility.
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* Presets were removed in WordPress/gutenberg#27555.
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* We have a preset CSS variable as the style.
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* Get the style value from the string and return CSS style.
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*/
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$index_to_splice = strrpos( $style_value, '|' ) + 1;
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$slug = _wp_to_kebab_case( substr( $style_value, $index_to_splice ) );
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// Return the actual CSS inline style value e.g. `var(--wp--preset--text-decoration--underline);`.
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return sprintf( 'var(--wp--preset--%s--%s);', $css_property, $slug );
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}
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/**
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* Renders typography styles/content to the block wrapper.
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*
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* @param string $block_content Rendered block content.
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* @param array $block Block object.
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* @return string Filtered block content.
|
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*/
|
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function gutenberg_render_typography_support( $block_content, $block ) {
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if ( ! isset( $block['attrs']['style']['typography']['fontSize'] ) ) {
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return $block_content;
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}
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$custom_font_size = $block['attrs']['style']['typography']['fontSize'];
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$fluid_font_size = gutenberg_get_typography_font_size_value( array( 'size' => $custom_font_size ) );
|
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|
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/*
|
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* Checks that $fluid_font_size does not match $custom_font_size,
|
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* which means it's been mutated by the fluid font size functions.
|
||
*/
|
||
if ( ! empty( $fluid_font_size ) && $fluid_font_size !== $custom_font_size ) {
|
||
// Replaces the first instance of `font-size:$custom_font_size` with `font-size:$fluid_font_size`.
|
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return preg_replace( '/font-size\s*:\s*' . preg_quote( $custom_font_size, '/' ) . '\s*;?/', 'font-size:' . esc_attr( $fluid_font_size ) . ';', $block_content, 1 );
|
||
}
|
||
|
||
return $block_content;
|
||
}
|
||
|
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/**
|
||
* Internal method that checks a string for a unit and value and returns an array consisting of `'value'` and `'unit'`, e.g., [ '42', 'rem' ].
|
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* A raw font size of `value + unit` is expected. If the value is a number, it will convert to `value + 'px'`.
|
||
*
|
||
* @access private
|
||
*
|
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* @param string|int|float $raw_value Raw size value from theme.json.
|
||
* @param array $options {
|
||
* Optional. An associative array of options. Default is empty array.
|
||
*
|
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* @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 array<string> $acceptable_units An array of font size units. Default `[ 'rem', 'px', 'em' ]`;
|
||
* }
|
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* @return array An array consisting of `'value'` and `'unit'` properties.
|
||
*/
|
||
function gutenberg_get_typography_value_and_unit( $raw_value, $options = array() ) {
|
||
if ( ! is_string( $raw_value ) && ! is_int( $raw_value ) && ! is_float( $raw_value ) ) {
|
||
_doing_it_wrong(
|
||
__FUNCTION__,
|
||
__( 'Raw size value must be a string, integer or a float.', 'gutenberg' ),
|
||
'6.1.0'
|
||
);
|
||
return null;
|
||
}
|
||
|
||
if ( empty( $raw_value ) ) {
|
||
return null;
|
||
}
|
||
|
||
// Converts numeric values to pixel values by default.
|
||
if ( is_numeric( $raw_value ) ) {
|
||
$raw_value = $raw_value . 'px';
|
||
}
|
||
|
||
$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 );
|
||
|
||
// We need a number value and a px or rem unit.
|
||
if ( ! isset( $matches[1] ) || ! isset( $matches[2] ) ) {
|
||
return null;
|
||
}
|
||
|
||
$value = $matches[1];
|
||
$unit = $matches[2];
|
||
|
||
// Default browser font size. Later we 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'];
|
||
}
|
||
|
||
/*
|
||
* No calculation is required if swapping between em and rem yet,
|
||
* since we assume a root size value. Later we might like to differentiate between
|
||
* :root font size (rem) and parent element font size (em) relativity.
|
||
*/
|
||
if ( ( 'em' === $options['coerce_to'] || 'rem' === $options['coerce_to'] ) && ( 'em' === $unit || 'rem' === $unit ) ) {
|
||
$unit = $options['coerce_to'];
|
||
}
|
||
|
||
return array(
|
||
'value' => round( $value, 3 ),
|
||
'unit' => $unit,
|
||
);
|
||
}
|
||
|
||
/**
|
||
* Internal implementation of clamp() based on available min/max viewport width, and min/max font sizes.
|
||
*
|
||
* @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().
|
||
*/
|
||
function gutenberg_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;
|
||
|
||
// Normalizes the minimum font size in order to use the value for calculations.
|
||
$minimum_font_size = gutenberg_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';
|
||
|
||
// Grabs the maximum font size and normalize it in order to use the value for calculations.
|
||
$maximum_font_size = gutenberg_get_typography_value_and_unit(
|
||
$maximum_font_size_raw,
|
||
array(
|
||
'coerce_to' => $font_size_unit,
|
||
)
|
||
);
|
||
|
||
// Checks for mandatory min and max sizes, and protects against unsupported units.
|
||
if ( ! $maximum_font_size || ! $minimum_font_size ) {
|
||
return null;
|
||
}
|
||
|
||
// Uses rem for accessible fluid target font scaling.
|
||
$minimum_font_size_rem = gutenberg_get_typography_value_and_unit(
|
||
$minimum_font_size_raw,
|
||
array(
|
||
'coerce_to' => 'rem',
|
||
)
|
||
);
|
||
|
||
// Viewport widths defined for fluid typography. Normalize units.
|
||
$maximum_viewport_width = gutenberg_get_typography_value_and_unit(
|
||
$maximum_viewport_width_raw,
|
||
array(
|
||
'coerce_to' => $font_size_unit,
|
||
)
|
||
);
|
||
|
||
$minimum_viewport_width = gutenberg_get_typography_value_and_unit(
|
||
$minimum_viewport_width_raw,
|
||
array(
|
||
'coerce_to' => $font_size_unit,
|
||
)
|
||
);
|
||
|
||
// Protects against unsupported units in min and max viewport widths.
|
||
if ( ! $minimum_viewport_width || ! $maximum_viewport_width ) {
|
||
return null;
|
||
}
|
||
|
||
// Calculates the linear factor denominator. If it's 0, we cannot calculate a fluid value.
|
||
$linear_factor_denominator = $maximum_viewport_width['value'] - $minimum_viewport_width['value'];
|
||
if ( empty( $linear_factor_denominator ) ) {
|
||
return null;
|
||
}
|
||
|
||
/*
|
||
* 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'] ) / ( $linear_factor_denominator ) );
|
||
$linear_factor_scaled = round( $linear_factor * $scale_factor, 3 );
|
||
$linear_factor_scaled = empty( $linear_factor_scaled ) ? 1 : $linear_factor_scaled;
|
||
$fluid_target_font_size = implode( '', $minimum_font_size_rem ) . " + ((1vw - $view_port_width_offset) * $linear_factor_scaled)";
|
||
|
||
return "clamp($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
|
||
* @since 6.1.1 Adjusted rules for min and max font sizes.
|
||
* @since 6.2.0 Added 'settings.typography.fluid.minFontSize' support.
|
||
* @since 6.3.0 Using layout.wideSize as max viewport width, and logarithmic scale factor to calculate minimum font scale.
|
||
* @since 6.4.0 Added configurable min and max viewport width values to the typography.fluid theme.json schema.
|
||
* @since 6.6.0 Deprecated bool argument $should_use_fluid_typography.
|
||
* @since 6.7.0 Font size presets can enable fluid typography individually, even if it’s disabled globally.
|
||
*
|
||
* @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|int|float $size CSS font-size value, including units where applicable.
|
||
* }
|
||
* @param bool|array $settings Optional Theme JSON settings array that overrides any global theme settings.
|
||
* Default is `array()`.
|
||
*
|
||
* @return string|null Font-size value or `null` if a size is not passed in $preset.
|
||
*/
|
||
function gutenberg_get_typography_font_size_value( $preset, $settings = array() ) {
|
||
if ( ! isset( $preset['size'] ) ) {
|
||
return null;
|
||
}
|
||
|
||
/*
|
||
* Catch falsy values and 0/'0'. Fluid calculations cannot be performed on `0`.
|
||
* Also return early when a preset font size explicitly disables fluid typography with `false`.
|
||
*/
|
||
$fluid_font_size_settings = $preset['fluid'] ?? null;
|
||
if ( false === $fluid_font_size_settings || empty( $preset['size'] ) ) {
|
||
return $preset['size'];
|
||
}
|
||
|
||
/*
|
||
* Backwards compatibility since 6.5.
|
||
* As a bool (deprecated since 6.5), $settings acts as an override to switch fluid typography "on" (`true`) or "off" (`false`).
|
||
*/
|
||
if ( is_bool( $settings ) ) {
|
||
_deprecated_argument( __FUNCTION__, '6.6.0', __( '`boolean` type for second argument `$settings` is deprecated. Use `array()` instead.', 'gutenberg' ) );
|
||
$settings = array(
|
||
'typography' => array(
|
||
'fluid' => $settings,
|
||
),
|
||
);
|
||
}
|
||
|
||
// Fallback to global settings as default.
|
||
$global_settings = gutenberg_get_global_settings();
|
||
$settings = wp_parse_args(
|
||
$settings,
|
||
$global_settings
|
||
);
|
||
$typography_settings = $settings['typography'] ?? array();
|
||
|
||
/*
|
||
* Return early when fluid typography is disabled in the settings, and there
|
||
* are no local settings to enable it for the individual preset.
|
||
*
|
||
* If this condition isn't met, either the settings or individual preset settings
|
||
* have enabled fluid typography.
|
||
*/
|
||
if ( empty( $typography_settings['fluid'] ) && empty( $fluid_font_size_settings ) ) {
|
||
return $preset['size'];
|
||
}
|
||
|
||
$fluid_settings = isset( $typography_settings['fluid'] ) ? $typography_settings['fluid'] : array();
|
||
$layout_settings = isset( $settings['layout'] ) ? $settings['layout'] : array();
|
||
|
||
// Defaults.
|
||
$default_maximum_viewport_width = '1600px';
|
||
$default_minimum_viewport_width = '320px';
|
||
$default_minimum_font_size_factor_max = 0.75;
|
||
$default_minimum_font_size_factor_min = 0.25;
|
||
$default_scale_factor = 1;
|
||
$default_minimum_font_size_limit = '14px';
|
||
|
||
// Defaults overrides.
|
||
$minimum_viewport_width = isset( $fluid_settings['minViewportWidth'] ) ? $fluid_settings['minViewportWidth'] : $default_minimum_viewport_width;
|
||
$maximum_viewport_width = isset( $layout_settings['wideSize'] ) && ! empty( gutenberg_get_typography_value_and_unit( $layout_settings['wideSize'] ) ) ? $layout_settings['wideSize'] : $default_maximum_viewport_width;
|
||
if ( isset( $fluid_settings['maxViewportWidth'] ) ) {
|
||
$maximum_viewport_width = $fluid_settings['maxViewportWidth'];
|
||
}
|
||
$has_min_font_size = isset( $fluid_settings['minFontSize'] ) && ! empty( gutenberg_get_typography_value_and_unit( $fluid_settings['minFontSize'] ) );
|
||
$minimum_font_size_limit = $has_min_font_size ? $fluid_settings['minFontSize'] : $default_minimum_font_size_limit;
|
||
|
||
// 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 = gutenberg_get_typography_value_and_unit( $preset['size'] );
|
||
|
||
// Protects against unsupported units.
|
||
if ( empty( $preferred_size['unit'] ) ) {
|
||
return $preset['size'];
|
||
}
|
||
|
||
// Parses the minimum font size limit, so we can perform checks using it.
|
||
$minimum_font_size_limit = gutenberg_get_typography_value_and_unit(
|
||
$minimum_font_size_limit,
|
||
array(
|
||
'coerce_to' => $preferred_size['unit'],
|
||
)
|
||
);
|
||
|
||
// Don't enforce minimum font size if a font size has explicitly set a min and max value.
|
||
if ( ! empty( $minimum_font_size_limit ) && ( ! $minimum_font_size_raw && ! $maximum_font_size_raw ) ) {
|
||
/*
|
||
* If a minimum size was not passed to this function
|
||
* and the user-defined font size is lower than $minimum_font_size_limit,
|
||
* do not calculate a fluid value.
|
||
*/
|
||
if ( $preferred_size['value'] <= $minimum_font_size_limit['value'] ) {
|
||
return $preset['size'];
|
||
}
|
||
}
|
||
|
||
// If no fluid max font size is available use the incoming value.
|
||
if ( ! $maximum_font_size_raw ) {
|
||
$maximum_font_size_raw = $preferred_size['value'] . $preferred_size['unit'];
|
||
}
|
||
|
||
/*
|
||
* If no minimumFontSize is provided, create one using
|
||
* the given font size multiplied by the min font size scale factor.
|
||
*/
|
||
if ( ! $minimum_font_size_raw ) {
|
||
$preferred_font_size_in_px = 'px' === $preferred_size['unit'] ? $preferred_size['value'] : $preferred_size['value'] * 16;
|
||
|
||
/*
|
||
* The scale factor is a multiplier that affects how quickly the curve will move towards the minimum,
|
||
* that is, how quickly the size factor reaches 0 given increasing font size values.
|
||
* For a - b * log2(), lower values of b will make the curve move towards the minimum faster.
|
||
* The scale factor is constrained between min and max values.
|
||
*/
|
||
$minimum_font_size_factor = min( max( 1 - 0.075 * log( $preferred_font_size_in_px, 2 ), $default_minimum_font_size_factor_min ), $default_minimum_font_size_factor_max );
|
||
$calculated_minimum_font_size = round( $preferred_size['value'] * $minimum_font_size_factor, 3 );
|
||
|
||
// Only use calculated min font size if it's > $minimum_font_size_limit value.
|
||
if ( ! empty( $minimum_font_size_limit ) && $calculated_minimum_font_size <= $minimum_font_size_limit['value'] ) {
|
||
$minimum_font_size_raw = $minimum_font_size_limit['value'] . $minimum_font_size_limit['unit'];
|
||
} else {
|
||
$minimum_font_size_raw = $calculated_minimum_font_size . $preferred_size['unit'];
|
||
}
|
||
}
|
||
|
||
$fluid_font_size_value = gutenberg_get_computed_fluid_typography_value(
|
||
array(
|
||
'minimum_viewport_width' => $minimum_viewport_width,
|
||
'maximum_viewport_width' => $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.
|
||
WP_Block_Supports::get_instance()->register(
|
||
'typography',
|
||
array(
|
||
'register_attribute' => 'gutenberg_register_typography_support',
|
||
'apply' => 'gutenberg_apply_typography_support',
|
||
)
|
||
);
|
||
|
||
if ( function_exists( 'wp_render_typography_support' ) ) {
|
||
remove_filter( 'render_block', 'wp_render_typography_support' );
|
||
}
|
||
add_filter( 'render_block', 'gutenberg_render_typography_support', 10, 2 );
|