WordPress/wp-includes/block-supports/typography.php

107 lines
3.2 KiB
PHP

<?php
/**
* Typography block support flag.
*
* @package WordPress
*/
/**
* Registers the style and typography block attributes for block types that support it.
*
* @access private
*
* @param WP_Block_Type $block_type Block Type.
*/
function wp_register_typography_support( $block_type ) {
$has_font_size_support = false;
if ( property_exists( $block_type, 'supports' ) ) {
$has_font_size_support = _wp_array_get( $block_type->supports, array( '__experimentalFontSize' ), false );
}
$has_line_height_support = false;
if ( property_exists( $block_type, 'supports' ) ) {
$has_line_height_support = _wp_array_get( $block_type->supports, array( '__experimentalLineHeight' ), false );
}
if ( ! $block_type->attributes ) {
$block_type->attributes = array();
}
if ( ( $has_font_size_support || $has_line_height_support ) && ! array_key_exists( 'style', $block_type->attributes ) ) {
$block_type->attributes['style'] = array(
'type' => 'object',
);
}
if ( $has_font_size_support && ! array_key_exists( 'fontSize', $block_type->attributes ) ) {
$block_type->attributes['fontSize'] = array(
'type' => 'string',
);
}
}
/**
* Add CSS classes and inline styles for font sizes to the incoming attributes array.
* This will be applied to the block markup in the front-end.
*
* @access private
*
* @param WP_Block_Type $block_type Block type.
* @param array $block_attributes Block attributes.
*
* @return array Font size CSS classes and inline styles.
*/
function wp_apply_typography_support( $block_type, $block_attributes ) {
$has_font_size_support = false;
$classes = array();
$styles = array();
if ( property_exists( $block_type, 'supports' ) ) {
$has_font_size_support = _wp_array_get( $block_type->supports, array( 'fontSize' ), false );
}
$has_line_height_support = false;
if ( property_exists( $block_type, 'supports' ) ) {
$has_line_height_support = _wp_array_get( $block_type->supports, array( 'lineHeight' ), false );
}
// Font Size.
if ( $has_font_size_support ) {
$has_named_font_size = array_key_exists( 'fontSize', $block_attributes );
$has_custom_font_size = isset( $block_attributes['style']['typography']['fontSize'] );
// Apply required class or style.
if ( $has_named_font_size ) {
$classes[] = sprintf( 'has-%s-font-size', $block_attributes['fontSize'] );
} elseif ( $has_custom_font_size ) {
$styles[] = sprintf( 'font-size: %spx;', $block_attributes['style']['typography']['fontSize'] );
}
}
// Line Height.
if ( $has_line_height_support ) {
$has_line_height = isset( $block_attributes['style']['typography']['lineHeight'] );
// Add the style (no classes for line-height).
if ( $has_line_height ) {
$styles[] = sprintf( 'line-height: %s;', $block_attributes['style']['typography']['lineHeight'] );
}
}
$attributes = array();
if ( ! empty( $classes ) ) {
$attributes['class'] = implode( ' ', $classes );
}
if ( ! empty( $styles ) ) {
$attributes['style'] = implode( ' ', $styles );
}
return $attributes;
}
WP_Block_Supports::get_instance()->register(
'typography',
array(
'register_attribute' => 'wp_register_typography_support',
'apply' => 'wp_apply_typography_support',
)
);