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1 <?php |
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2 /** |
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3 * Server-side rendering of the `core/cover` block. |
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4 * |
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5 * @package WordPress |
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6 */ |
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7 |
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8 /** |
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9 * Renders the `core/cover` block on server. |
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10 * |
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11 * @param array $attributes The block attributes. |
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12 * @param array $content The block rendered content. |
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13 * |
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14 * @return string Returns the cover block markup, if useFeaturedImage is true. |
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15 */ |
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16 function render_block_core_cover( $attributes, $content ) { |
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17 if ( 'image' !== $attributes['backgroundType'] || false === $attributes['useFeaturedImage'] ) { |
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18 return $content; |
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19 } |
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20 |
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21 if ( ! ( $attributes['hasParallax'] || $attributes['isRepeated'] ) ) { |
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22 $attr = array( |
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23 'class' => 'wp-block-cover__image-background', |
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24 'data-object-fit' => 'cover', |
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25 ); |
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26 |
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27 if ( isset( $attributes['focalPoint'] ) ) { |
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28 $object_position = round( $attributes['focalPoint']['x'] * 100 ) . '%' . ' ' . round( $attributes['focalPoint']['y'] * 100 ) . '%'; |
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29 $attr['data-object-position'] = $object_position; |
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30 $attr['style'] = 'object-position: ' . $object_position; |
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31 } |
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32 |
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33 $image = get_the_post_thumbnail( null, 'post-thumbnail', $attr ); |
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34 |
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35 /* |
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36 * Inserts the featured image between the (1st) cover 'background' `span` and 'inner_container' `div`, |
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37 * and removes eventual withespace characters between the two (typically introduced at template level) |
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38 */ |
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39 $inner_container_start = '/<div\b[^>]+wp-block-cover__inner-container[\s|"][^>]*>/U'; |
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40 if ( 1 === preg_match( $inner_container_start, $content, $matches, PREG_OFFSET_CAPTURE ) ) { |
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41 $offset = $matches[0][1]; |
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42 $content = substr( $content, 0, $offset ) . $image . substr( $content, $offset ); |
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43 } |
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44 } else { |
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45 if ( in_the_loop() ) { |
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46 update_post_thumbnail_cache(); |
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47 } |
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48 $current_featured_image = get_the_post_thumbnail_url(); |
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49 $content = preg_replace( |
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50 '/class=\".*?\"/', |
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51 '${0} style="background-image:url(' . esc_url( $current_featured_image ) . ')"', |
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52 $content, |
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53 1 |
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54 ); |
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55 } |
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56 |
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57 return $content; |
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58 } |
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59 |
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60 /** |
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61 * Registers the `core/cover` block renderer on server. |
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62 */ |
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63 function register_block_core_cover() { |
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64 register_block_type_from_metadata( |
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65 __DIR__ . '/cover', |
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66 array( |
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67 'render_callback' => 'render_block_core_cover', |
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68 ) |
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69 ); |
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70 } |
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71 add_action( 'init', 'register_block_core_cover' ); |