| 1 |
<?php |
| 2 |
/** |
| 3 |
* Server-side rendering of the `core/post-featured-image` block. |
| 4 |
* |
| 5 |
* @package WordPress |
| 6 |
*/ |
| 7 |
|
| 8 |
/** |
| 9 |
* Renders the `core/post-featured-image` block on the server. |
| 10 |
* |
| 11 |
* @since 5.8.0 |
| 12 |
* |
| 13 |
* @param array $attributes Block attributes. |
| 14 |
* @param string $content Block default content. |
| 15 |
* @param WP_Block $block Block instance. |
| 16 |
* @return string Returns the featured image for the current post. |
| 17 |
*/ |
| 18 |
function gutenberg_render_block_core_post_featured_image( $attributes, $content, $block ) { |
| 19 |
if ( ! isset( $block->context['postId'] ) ) { |
| 20 |
return ''; |
| 21 |
} |
| 22 |
$post_ID = $block->context['postId']; |
| 23 |
|
| 24 |
$is_link = isset( $attributes['isLink'] ) && $attributes['isLink']; |
| 25 |
$size_slug = $attributes['sizeSlug'] ?? 'post-thumbnail'; |
| 26 |
$attr = gutenberg_get_block_core_post_featured_image_border_attributes( $attributes ); |
| 27 |
$overlay_markup = gutenberg_get_block_core_post_featured_image_overlay_element_markup( $attributes ); |
| 28 |
|
| 29 |
if ( $is_link ) { |
| 30 |
$title = get_the_title( $post_ID ); |
| 31 |
if ( $title ) { |
| 32 |
$attr['alt'] = trim( strip_tags( $title ) ); |
| 33 |
} else { |
| 34 |
$attr['alt'] = sprintf( |
| 35 |
// translators: %d is the post ID. |
| 36 |
__( 'Untitled post %d' ), |
| 37 |
$post_ID |
| 38 |
); |
| 39 |
} |
| 40 |
} |
| 41 |
|
| 42 |
$extra_styles = ''; |
| 43 |
$has_width = array_key_exists( 'width', $attributes ) && null !== $attributes['width'] && '' !== $attributes['width']; |
| 44 |
$has_height = array_key_exists( 'height', $attributes ) && null !== $attributes['height'] && '' !== $attributes['height']; |
| 45 |
|
| 46 |
if ( ! empty( $attributes['aspectRatio'] ) ) { |
| 47 |
$extra_styles .= esc_attr( safecss_filter_attr( 'aspect-ratio:' . $attributes['aspectRatio'] ) ) . ';'; |
| 48 |
$extra_styles .= 'width:100%;'; |
| 49 |
} |
| 50 |
|
| 51 |
if ( $has_height ) { |
| 52 |
$extra_styles .= esc_attr( safecss_filter_attr( 'height:' . $attributes['height'] ) ) . ';'; |
| 53 |
} elseif ( $has_width ) { |
| 54 |
$extra_styles .= 'height:auto;'; |
| 55 |
} |
| 56 |
|
| 57 |
if ( $has_width ) { |
| 58 |
$extra_styles .= esc_attr( safecss_filter_attr( 'width:' . $attributes['width'] ) ) . ';'; |
| 59 |
} |
| 60 |
|
| 61 |
if ( ! empty( $attributes['scale'] ) ) { |
| 62 |
$extra_styles .= esc_attr( safecss_filter_attr( 'object-fit:' . $attributes['scale'] ) ) . ';'; |
| 63 |
} |
| 64 |
if ( ! empty( $attributes['style']['shadow'] ) ) { |
| 65 |
$shadow_styles = gutenberg_style_engine_get_styles( array( 'shadow' => $attributes['style']['shadow'] ) ); |
| 66 |
|
| 67 |
if ( ! empty( $shadow_styles['css'] ) ) { |
| 68 |
$extra_styles .= $shadow_styles['css']; |
| 69 |
} |
| 70 |
} |
| 71 |
|
| 72 |
if ( ! empty( $extra_styles ) ) { |
| 73 |
$attr['style'] = empty( $attr['style'] ) ? $extra_styles : $attr['style'] . $extra_styles; |
| 74 |
} |
| 75 |
|
| 76 |
$featured_image = get_the_post_thumbnail( $post_ID, $size_slug, $attr ); |
| 77 |
|
| 78 |
// Get the first image from the post. |
| 79 |
if ( $attributes['useFirstImageFromPost'] && ! $featured_image ) { |
| 80 |
$content_post = get_post( $post_ID ); |
| 81 |
$content = $content_post->post_content; |
| 82 |
$processor = new WP_HTML_Tag_Processor( $content ); |
| 83 |
|
| 84 |
/* |
| 85 |
* Transfer the image tag from the post into a new text snippet. |
| 86 |
* Because the HTML API doesn't currently expose a way to extract |
| 87 |
* HTML substrings this is necessary as a workaround. Of note, this |
| 88 |
* is different than directly extracting the IMG tag: |
| 89 |
* - If there are duplicate attributes in the source there will only be one in the output. |
| 90 |
* - If there are single-quoted or unquoted attributes they will be double-quoted in the output. |
| 91 |
* - If there are named character references in the attribute values they may be replaced with their direct code points. E.g. `…` becomes `…`. |
| 92 |
* In the future there will likely be a mechanism to copy snippets of HTML from |
| 93 |
* one document into another, via the HTML Processor's `get_outer_html()` or |
| 94 |
* equivalent. When that happens it would be appropriate to replace this custom |
| 95 |
* code with that canonical code. |
| 96 |
*/ |
| 97 |
if ( $processor->next_tag( 'img' ) ) { |
| 98 |
$tag_html = new WP_HTML_Tag_Processor( '<img>' ); |
| 99 |
$tag_html->next_tag(); |
| 100 |
foreach ( $processor->get_attribute_names_with_prefix( '' ) as $name ) { |
| 101 |
$tag_html->set_attribute( $name, $processor->get_attribute( $name ) ); |
| 102 |
} |
| 103 |
if ( ! empty( $attr['style'] ) ) { |
| 104 |
$existing_style = $tag_html->get_attribute( 'style' ); |
| 105 |
$style = is_string( $existing_style ) && '' !== $existing_style |
| 106 |
? rtrim( $existing_style, ';' ) . ';' . $attr['style'] |
| 107 |
: $attr['style']; |
| 108 |
$tag_html->set_attribute( 'style', $style ); |
| 109 |
} |
| 110 |
$featured_image = $tag_html->get_updated_html(); |
| 111 |
} |
| 112 |
} |
| 113 |
|
| 114 |
if ( ! $featured_image ) { |
| 115 |
return ''; |
| 116 |
} |
| 117 |
|
| 118 |
if ( $is_link ) { |
| 119 |
$link_target = $attributes['linkTarget']; |
| 120 |
$rel = ! empty( $attributes['rel'] ) ? 'rel="' . esc_attr( $attributes['rel'] ) . '"' : ''; |
| 121 |
$featured_image = sprintf( |
| 122 |
'<a href="%1$s" target="%2$s" %3$s>%4$s%5$s</a>', |
| 123 |
esc_url( get_the_permalink( $post_ID ) ), |
| 124 |
esc_attr( $link_target ), |
| 125 |
$rel, |
| 126 |
$featured_image, |
| 127 |
$overlay_markup |
| 128 |
); |
| 129 |
} else { |
| 130 |
$featured_image = $featured_image . $overlay_markup; |
| 131 |
} |
| 132 |
|
| 133 |
$wrapper_attributes = get_block_wrapper_attributes(); |
| 134 |
return "<figure {$wrapper_attributes}>{$featured_image}</figure>"; |
| 135 |
} |
| 136 |
|
| 137 |
/** |
| 138 |
* Generate markup for the HTML element that will be used for the overlay. |
| 139 |
* |
| 140 |
* @since 6.1.0 |
| 141 |
* |
| 142 |
* @param array $attributes Block attributes. |
| 143 |
* |
| 144 |
* @return string HTML markup in string format. |
| 145 |
*/ |
| 146 |
function gutenberg_get_block_core_post_featured_image_overlay_element_markup( $attributes ) { |
| 147 |
$has_dim_background = isset( $attributes['dimRatio'] ) && $attributes['dimRatio']; |
| 148 |
$has_gradient = isset( $attributes['gradient'] ) && $attributes['gradient']; |
| 149 |
$has_custom_gradient = isset( $attributes['customGradient'] ) && $attributes['customGradient']; |
| 150 |
$has_solid_overlay = isset( $attributes['overlayColor'] ) && $attributes['overlayColor']; |
| 151 |
$has_custom_overlay = isset( $attributes['customOverlayColor'] ) && $attributes['customOverlayColor']; |
| 152 |
$class_names = array( 'wp-block-post-featured-image__overlay' ); |
| 153 |
$styles = array(); |
| 154 |
|
| 155 |
if ( ! $has_dim_background ) { |
| 156 |
return ''; |
| 157 |
} |
| 158 |
|
| 159 |
// Apply border classes and styles. |
| 160 |
$border_attributes = gutenberg_get_block_core_post_featured_image_border_attributes( $attributes ); |
| 161 |
|
| 162 |
if ( ! empty( $border_attributes['class'] ) ) { |
| 163 |
$class_names[] = $border_attributes['class']; |
| 164 |
} |
| 165 |
|
| 166 |
if ( ! empty( $border_attributes['style'] ) ) { |
| 167 |
$styles[] = $border_attributes['style']; |
| 168 |
} |
| 169 |
|
| 170 |
// Apply overlay and gradient classes. |
| 171 |
$class_names[] = 'has-background-dim'; |
| 172 |
$class_names[] = "has-background-dim-{$attributes['dimRatio']}"; |
| 173 |
|
| 174 |
if ( $has_solid_overlay ) { |
| 175 |
$class_names[] = "has-{$attributes['overlayColor']}-background-color"; |
| 176 |
} |
| 177 |
|
| 178 |
if ( $has_gradient || $has_custom_gradient ) { |
| 179 |
$class_names[] = 'has-background-gradient'; |
| 180 |
} |
| 181 |
|
| 182 |
if ( $has_gradient ) { |
| 183 |
$class_names[] = "has-{$attributes['gradient']}-gradient-background"; |
| 184 |
} |
| 185 |
|
| 186 |
// Apply background styles. |
| 187 |
if ( $has_custom_gradient ) { |
| 188 |
$styles[] = sprintf( 'background-image: %s;', $attributes['customGradient'] ); |
| 189 |
} |
| 190 |
|
| 191 |
if ( $has_custom_overlay ) { |
| 192 |
$styles[] = sprintf( 'background-color: %s;', $attributes['customOverlayColor'] ); |
| 193 |
} |
| 194 |
|
| 195 |
return sprintf( |
| 196 |
'<span class="%s" style="%s" aria-hidden="true"></span>', |
| 197 |
esc_attr( implode( ' ', $class_names ) ), |
| 198 |
esc_attr( safecss_filter_attr( implode( ' ', $styles ) ) ) |
| 199 |
); |
| 200 |
} |
| 201 |
|
| 202 |
/** |
| 203 |
* Generates class names and styles to apply the border support styles for |
| 204 |
* the Post Featured Image block. |
| 205 |
* |
| 206 |
* @since 6.1.0 |
| 207 |
* |
| 208 |
* @param array $attributes The block attributes. |
| 209 |
* @return array The border-related classnames and styles for the block. |
| 210 |
*/ |
| 211 |
function gutenberg_get_block_core_post_featured_image_border_attributes( $attributes ) { |
| 212 |
$border_styles = array(); |
| 213 |
$sides = array( 'top', 'right', 'bottom', 'left' ); |
| 214 |
|
| 215 |
// Border radius. |
| 216 |
if ( isset( $attributes['style']['border']['radius'] ) ) { |
| 217 |
$border_styles['radius'] = $attributes['style']['border']['radius']; |
| 218 |
} |
| 219 |
|
| 220 |
// Border style. |
| 221 |
if ( isset( $attributes['style']['border']['style'] ) ) { |
| 222 |
$border_styles['style'] = $attributes['style']['border']['style']; |
| 223 |
} |
| 224 |
|
| 225 |
// Border width. |
| 226 |
if ( isset( $attributes['style']['border']['width'] ) ) { |
| 227 |
$border_styles['width'] = $attributes['style']['border']['width']; |
| 228 |
} |
| 229 |
|
| 230 |
// Border color. |
| 231 |
$preset_color = array_key_exists( 'borderColor', $attributes ) ? "var:preset|color|{$attributes['borderColor']}" : null; |
| 232 |
$custom_color = $attributes['style']['border']['color'] ?? null; |
| 233 |
$border_styles['color'] = $preset_color ? $preset_color : $custom_color; |
| 234 |
|
| 235 |
// Individual border styles e.g. top, left etc. |
| 236 |
foreach ( $sides as $side ) { |
| 237 |
$border = $attributes['style']['border'][ $side ] ?? null; |
| 238 |
$border_styles[ $side ] = array( |
| 239 |
'color' => $border['color'] ?? null, |
| 240 |
'style' => $border['style'] ?? null, |
| 241 |
'width' => $border['width'] ?? null, |
| 242 |
); |
| 243 |
} |
| 244 |
|
| 245 |
$styles = gutenberg_style_engine_get_styles( array( 'border' => $border_styles ) ); |
| 246 |
$attributes = array(); |
| 247 |
if ( ! empty( $styles['classnames'] ) ) { |
| 248 |
$attributes['class'] = $styles['classnames']; |
| 249 |
} |
| 250 |
if ( ! empty( $styles['css'] ) ) { |
| 251 |
$attributes['style'] = $styles['css']; |
| 252 |
} |
| 253 |
return $attributes; |
| 254 |
} |
| 255 |
|
| 256 |
/** |
| 257 |
* Registers the `core/post-featured-image` block on the server. |
| 258 |
* |
| 259 |
* @since 5.8.0 |
| 260 |
*/ |
| 261 |
function gutenberg_register_block_core_post_featured_image() { |
| 262 |
register_block_type_from_metadata( |
| 263 |
__DIR__ . '/post-featured-image', |
| 264 |
array( |
| 265 |
'render_callback' => 'gutenberg_render_block_core_post_featured_image', |
| 266 |
) |
| 267 |
); |
| 268 |
} |
| 269 |
add_action( 'init', 'gutenberg_register_block_core_post_featured_image', 20 ); |
| 270 |
|
