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   1  <?php
   2  /**
   3   * Server-side rendering of the `core/icon` block.
   4   *
   5   * @package WordPress
   6   */
   7  
   8  /**
   9   * Renders the `core/icon` block on server.
  10   *
  11   * @since 7.0.0
  12   *
  13   * @param array $attributes The block attributes.
  14   *
  15   * @return string Returns the Icon.
  16   */
  17  function render_block_core_icon( $attributes ) {
  18      if ( empty( $attributes['icon'] ) ) {
  19          return;
  20      }
  21  
  22      // Text color and background color.
  23      $color_styles = array();
  24  
  25      $preset_text_color    = array_key_exists( 'textColor', $attributes ) ? "var:preset|color|{$attributes['textColor']}" : null;
  26      $custom_text_color    = $attributes['style']['color']['text'] ?? null;
  27      $color_styles['text'] = $preset_text_color ? $preset_text_color : $custom_text_color;
  28  
  29      $preset_background_color    = array_key_exists( 'backgroundColor', $attributes ) ? "var:preset|color|{$attributes['backgroundColor']}" : null;
  30      $custom_background_color    = $attributes['style']['color']['background'] ?? null;
  31      $color_styles['background'] = $preset_background_color ? $preset_background_color : $custom_background_color;
  32  
  33      // Border.
  34      $border_styles = array();
  35      $sides         = array( 'top', 'right', 'bottom', 'left' );
  36  
  37      if ( isset( $attributes['style']['border']['radius'] ) ) {
  38          $border_styles['radius'] = $attributes['style']['border']['radius'];
  39      }
  40      if ( isset( $attributes['style']['border']['style'] ) ) {
  41          $border_styles['style'] = $attributes['style']['border']['style'];
  42      }
  43      if ( isset( $attributes['style']['border']['width'] ) ) {
  44          $border_styles['width'] = $attributes['style']['border']['width'];
  45      }
  46  
  47      $preset_color           = array_key_exists( 'borderColor', $attributes ) ? "var:preset|color|{$attributes['borderColor']}" : null;
  48      $custom_color           = $attributes['style']['border']['color'] ?? null;
  49      $border_styles['color'] = $preset_color ? $preset_color : $custom_color;
  50  
  51      foreach ( $sides as $side ) {
  52          $border                 = $attributes['style']['border'][ $side ] ?? null;
  53          $border_styles[ $side ] = array(
  54              'color' => $border['color'] ?? null,
  55              'style' => $border['style'] ?? null,
  56              'width' => $border['width'] ?? null,
  57          );
  58      }
  59  
  60      // Spacing (Padding).
  61      $spacing_styles = array();
  62      if ( isset( $attributes['style']['spacing']['padding'] ) ) {
  63          $spacing_styles['padding'] = $attributes['style']['spacing']['padding'];
  64      }
  65  
  66      // Dimensions (Width).
  67      $dimensions_styles = array();
  68      if ( isset( $attributes['style']['dimensions']['width'] ) ) {
  69          $dimensions_styles['width'] = $attributes['style']['dimensions']['width'];
  70      }
  71  
  72      // Generate styles and classes.
  73      $styles = wp_style_engine_get_styles(
  74          array(
  75              'color'      => $color_styles,
  76              'border'     => $border_styles,
  77              'spacing'    => $spacing_styles,
  78              'dimensions' => $dimensions_styles,
  79          ),
  80      );
  81  
  82      $svg = wp_get_icon(
  83          $attributes['icon'],
  84          array(
  85              // Width is applied via the dimensions block support styles below.
  86              'size'  => null,
  87              'class' => $styles['classnames'] ?? '',
  88              'label' => $attributes['ariaLabel'] ?? '',
  89          )
  90      );
  91  
  92      if ( '' === $svg ) {
  93          return;
  94      }
  95  
  96      $processor = new WP_HTML_Tag_Processor( $svg );
  97      if ( $processor->next_tag( 'svg' ) ) {
  98          if ( ! empty( $styles['css'] ) ) {
  99              // Merge with the SVG's intrinsic style (e.g. `fill: none` on
 100              // stroke-based icons) so it is preserved. The block styles come last
 101              // so they win on any conflicting property.
 102              $existing_style = $processor->get_attribute( 'style' );
 103              $trimmed_style  = is_string( $existing_style )
 104                  ? rtrim( trim( $existing_style ), ';' )
 105                  : '';
 106              $merged_style   = '' !== $trimmed_style
 107                  ? $trimmed_style . '; ' . $styles['css']
 108                  : $styles['css'];
 109              $processor->set_attribute( 'style', $merged_style );
 110          }
 111  
 112          // Apply flip classes to the SVG.
 113          $flip_horizontal = $attributes['flipHorizontal'] ?? false;
 114          $flip_vertical   = $attributes['flipVertical'] ?? false;
 115  
 116          if ( $flip_horizontal ) {
 117              $processor->add_class( 'is-flip-horizontal' );
 118          }
 119          if ( $flip_vertical ) {
 120              $processor->add_class( 'is-flip-vertical' );
 121          }
 122  
 123          $rotation = isset( $attributes['rotation'] ) ? (int) $attributes['rotation'] : 0;
 124  
 125          if ( $rotation ) {
 126              $current_style = $processor->get_attribute( 'style' ) ?? '';
 127              $rotation_css  = 'rotate: ' . $rotation . 'deg;';
 128              $trimmed_style = is_string( $current_style )
 129                  ? rtrim( trim( $current_style ), ';' )
 130                  : '';
 131              $merged_style  = '' !== $trimmed_style
 132                  ? $trimmed_style . '; ' . $rotation_css
 133                  : $rotation_css;
 134              $processor->set_attribute( 'style', $merged_style );
 135          }
 136  
 137          $svg = $processor->get_updated_html();
 138      }
 139  
 140      $wrapper_attributes = get_block_wrapper_attributes();
 141      return sprintf( '<div %s>%s</div>', $wrapper_attributes, $svg );
 142  }
 143  
 144  
 145  /**
 146   * Registers the `core/icon` block on server.
 147   *
 148   * @since 7.0.0
 149   */
 150  function register_block_core_icon() {
 151      register_block_type_from_metadata(
 152          __DIR__ . '/icon',
 153          array(
 154              'render_callback' => 'render_block_core_icon',
 155          )
 156      );
 157  }
 158  add_action( 'init', 'register_block_core_icon' );