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/wp-includes/ -> class-wp-duotone.php (source)

   1  <?php
   2  /**
   3   * WP_Duotone class
   4   *
   5   * Parts of this source were derived and modified from colord,
   6   * released under the MIT license.
   7   *
   8   * https://github.com/omgovich/colord
   9   *
  10   * Copyright (c) 2020 Vlad Shilov omgovich@ya.ru
  11   *
  12   * Permission is hereby granted, free of charge, to any person obtaining
  13   * a copy of this software and associated documentation files (the
  14   * "Software"), to deal in the Software without restriction, including
  15   * without limitation the rights to use, copy, modify, merge, publish,
  16   * distribute, sublicense, and/or sell copies of the Software, and to
  17   * permit persons to whom the Software is furnished to do so, subject to
  18   * the following conditions:
  19   *
  20   * The above copyright notice and this permission notice shall be
  21   * included in all copies or substantial portions of the Software.
  22   *
  23   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24   * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25   * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26   * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  27   * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  28   * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  29   * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  30   *
  31   * @package WordPress
  32   * @since 6.3.0
  33   */
  34  
  35  /**
  36   * Manages duotone block supports and global styles.
  37   *
  38   * @access private
  39   */
  40  class WP_Duotone {
  41      /**
  42       * Block names from global, theme, and custom styles that use duotone presets and the slug of
  43       * the preset they are using.
  44       *
  45       * Example:
  46       *  [
  47       *      'core/featured-image' => 'blue-orange',
  48       *       …
  49       *  ]
  50       *
  51       * @internal
  52       *
  53       * @since 6.3.0
  54       *
  55       * @var array
  56       */
  57      private static $global_styles_block_names;
  58  
  59      /**
  60       * An array of duotone filter data from global, theme, and custom presets.
  61       *
  62       * Example:
  63       *  [
  64       *      'wp-duotone-blue-orange' => [
  65       *          'slug'  => 'blue-orange',
  66       *          'colors' => [ '#0000ff', '#ffcc00' ],
  67       *      ],
  68       *      'wp-duotone-red-yellow' => [
  69       *          'slug'   => 'red-yellow',
  70       *          'colors' => [ '#cc0000', '#ffff33' ],
  71       *      ],
  72       *      …
  73       *  ]
  74       *
  75       * @internal
  76       *
  77       * @since 6.3.0
  78       *
  79       * @var array
  80       */
  81      private static $global_styles_presets;
  82  
  83      /**
  84       * All of the duotone filter data from presets for CSS custom properties on
  85       * the page.
  86       *
  87       * Example:
  88       *  [
  89       *      'wp-duotone-blue-orange' => [
  90       *          'slug'   => 'blue-orange',
  91       *          'colors' => [ '#0000ff', '#ffcc00' ],
  92       *      ],
  93       *      …
  94       *  ]
  95       *
  96       * @internal
  97       *
  98       * @since 6.3.0
  99       *
 100       * @var array
 101       */
 102      private static $used_global_styles_presets = array();
 103  
 104      /**
 105       * All of the duotone filter data for SVGs on the page. Includes both
 106       * presets and custom filters.
 107       *
 108       * Example:
 109       *  [
 110       *      'wp-duotone-blue-orange' => [
 111       *          'slug'   => 'blue-orange',
 112       *          'colors' => [ '#0000ff', '#ffcc00' ],
 113       *      ],
 114       *      'wp-duotone-000000-ffffff-2' => [
 115       *          'slug'   => '000000-ffffff-2',
 116       *          'colors' => [ '#000000', '#ffffff' ],
 117       *      ],
 118       *      …
 119       *  ]
 120       *
 121       * @internal
 122       *
 123       * @since 6.3.0
 124       *
 125       * @var array
 126       */
 127      private static $used_svg_filter_data = array();
 128  
 129      /**
 130       * All of the block CSS declarations for styles on the page.
 131       *
 132       * Example:
 133       *  [
 134       *      [
 135       *          'selector'     => '.wp-duotone-000000-ffffff-2.wp-block-image img',
 136       *          'declarations' => [
 137       *              'filter' => 'url(#wp-duotone-000000-ffffff-2)',
 138       *          ],
 139       *      ],
 140       *      …
 141       *  ]
 142       *
 143       * @internal
 144       *
 145       * @since 6.3.0
 146       *
 147       * @var array
 148       */
 149      private static $block_css_declarations = array();
 150  
 151      /**
 152       * Clamps a value between an upper and lower bound.
 153       *
 154       * Direct port of colord's clamp function.
 155       *
 156       * @link https://github.com/omgovich/colord/blob/3f859e03b0ca622eb15480f611371a0f15c9427f/src/helpers.ts#L23 Sourced from colord.
 157       *
 158       * @internal
 159       *
 160       * @since 6.3.0
 161       *
 162       * @param float $number The number to clamp.
 163       * @param float $min    The minimum value.
 164       * @param float $max    The maximum value.
 165       * @return float The clamped value.
 166       */
 167  	private static function colord_clamp( $number, $min = 0, $max = 1 ) {
 168          return $number > $max ? $max : ( $number > $min ? $number : $min );
 169      }
 170  
 171      /**
 172       * Processes and clamps a degree (angle) value properly.
 173       *
 174       * Direct port of colord's clampHue function.
 175       *
 176       * @link https://github.com/omgovich/colord/blob/3f859e03b0ca622eb15480f611371a0f15c9427f/src/helpers.ts#L32 Sourced from colord.
 177       *
 178       * @internal
 179       *
 180       * @since 6.3.0
 181       *
 182       * @param float $degrees The hue to clamp.
 183       * @return float The clamped hue.
 184       */
 185  	private static function colord_clamp_hue( $degrees ) {
 186          $degrees = is_finite( $degrees ) ? $degrees % 360 : 0;
 187          return $degrees > 0 ? $degrees : $degrees + 360;
 188      }
 189  
 190      /**
 191       * Converts a hue value to degrees from 0 to 360 inclusive.
 192       *
 193       * Direct port of colord's parseHue function.
 194       *
 195       * @link https://github.com/omgovich/colord/blob/3f859e03b0ca622eb15480f611371a0f15c9427f/src/helpers.ts#L40 Sourced from colord.
 196       *
 197       * @internal
 198       *
 199       * @since 6.3.0
 200       *
 201       * @param float  $value The hue value to parse.
 202       * @param string $unit  The unit of the hue value.
 203       * @return float The parsed hue value.
 204       */
 205  	private static function colord_parse_hue( $value, $unit = 'deg' ) {
 206          $angle_units = array(
 207              'grad' => 360 / 400,
 208              'turn' => 360,
 209              'rad'  => 360 / ( M_PI * 2 ),
 210          );
 211  
 212          $factor = isset( $angle_units[ $unit ] ) ? $angle_units[ $unit ] : 1;
 213  
 214          return (float) $value * $factor;
 215      }
 216  
 217      /**
 218       * Parses any valid Hex3, Hex4, Hex6 or Hex8 string and converts it to an RGBA object.
 219       *
 220       * Direct port of colord's parseHex function.
 221       *
 222       * @link https://github.com/omgovich/colord/blob/3f859e03b0ca622eb15480f611371a0f15c9427f/src/colorModels/hex.ts#L8 Sourced from colord.
 223       *
 224       * @internal
 225       *
 226       * @since 6.3.0
 227       *
 228       * @param string $hex The hex string to parse.
 229       * @return array|null An array of RGBA values or null if the hex string is invalid.
 230       */
 231  	private static function colord_parse_hex( $hex ) {
 232          $is_match = preg_match(
 233              '/^#([0-9a-f]{3,8})$/i',
 234              $hex,
 235              $hex_match
 236          );
 237  
 238          if ( ! $is_match ) {
 239              return null;
 240          }
 241  
 242          $hex = $hex_match[1];
 243  
 244          if ( 4 >= strlen( $hex ) ) {
 245              return array(
 246                  'r' => (int) base_convert( $hex[0] . $hex[0], 16, 10 ),
 247                  'g' => (int) base_convert( $hex[1] . $hex[1], 16, 10 ),
 248                  'b' => (int) base_convert( $hex[2] . $hex[2], 16, 10 ),
 249                  'a' => 4 === strlen( $hex ) ? round( base_convert( $hex[3] . $hex[3], 16, 10 ) / 255, 2 ) : 1,
 250              );
 251          }
 252  
 253          if ( 6 === strlen( $hex ) || 8 === strlen( $hex ) ) {
 254              return array(
 255                  'r' => (int) base_convert( substr( $hex, 0, 2 ), 16, 10 ),
 256                  'g' => (int) base_convert( substr( $hex, 2, 2 ), 16, 10 ),
 257                  'b' => (int) base_convert( substr( $hex, 4, 2 ), 16, 10 ),
 258                  'a' => 8 === strlen( $hex ) ? round( (int) base_convert( substr( $hex, 6, 2 ), 16, 10 ) / 255, 2 ) : 1,
 259              );
 260          }
 261  
 262          return null;
 263      }
 264  
 265      /**
 266       * Clamps an array of RGBA values.
 267       *
 268       * Direct port of colord's clampRgba function.
 269       *
 270       * @link https://github.com/omgovich/colord/blob/3f859e03b0ca622eb15480f611371a0f15c9427f/src/colorModels/rgb.ts#L5 Sourced from colord.
 271       *
 272       * @internal
 273       *
 274       * @since 6.3.0
 275       *
 276       * @param array $rgba The RGBA array to clamp.
 277       * @return array The clamped RGBA array.
 278       */
 279  	private static function colord_clamp_rgba( $rgba ) {
 280          $rgba['r'] = self::colord_clamp( $rgba['r'], 0, 255 );
 281          $rgba['g'] = self::colord_clamp( $rgba['g'], 0, 255 );
 282          $rgba['b'] = self::colord_clamp( $rgba['b'], 0, 255 );
 283          $rgba['a'] = self::colord_clamp( $rgba['a'] );
 284  
 285          return $rgba;
 286      }
 287  
 288      /**
 289       * Parses a valid RGB[A] CSS color function/string.
 290       *
 291       * Direct port of colord's parseRgbaString function.
 292       *
 293       * @link https://github.com/omgovich/colord/blob/3f859e03b0ca622eb15480f611371a0f15c9427f/src/colorModels/rgbString.ts#L18 Sourced from colord.
 294       *
 295       * @internal
 296       *
 297       * @since 6.3.0
 298       *
 299       * @param string $input The RGBA string to parse.
 300       * @return array|null An array of RGBA values or null if the RGB string is invalid.
 301       */
 302  	private static function colord_parse_rgba_string( $input ) {
 303          // Functional syntax.
 304          $is_match = preg_match(
 305              '/^rgba?\(\s*([+-]?\d*\.?\d+)(%)?\s*,\s*([+-]?\d*\.?\d+)(%)?\s*,\s*([+-]?\d*\.?\d+)(%)?\s*(?:,\s*([+-]?\d*\.?\d+)(%)?\s*)?\)$/i',
 306              $input,
 307              $match
 308          );
 309  
 310          if ( ! $is_match ) {
 311              // Whitespace syntax.
 312              $is_match = preg_match(
 313                  '/^rgba?\(\s*([+-]?\d*\.?\d+)(%)?\s+([+-]?\d*\.?\d+)(%)?\s+([+-]?\d*\.?\d+)(%)?\s*(?:\/\s*([+-]?\d*\.?\d+)(%)?\s*)?\)$/i',
 314                  $input,
 315                  $match
 316              );
 317          }
 318  
 319          if ( ! $is_match ) {
 320              return null;
 321          }
 322  
 323          /*
 324           * For some reason, preg_match doesn't include empty matches at the end
 325           * of the array, so we add them manually to make things easier later.
 326           */
 327          for ( $i = 1; $i <= 8; $i++ ) {
 328              if ( ! isset( $match[ $i ] ) ) {
 329                  $match[ $i ] = '';
 330              }
 331          }
 332  
 333          if ( $match[2] !== $match[4] || $match[4] !== $match[6] ) {
 334              return null;
 335          }
 336  
 337          return self::colord_clamp_rgba(
 338              array(
 339                  'r' => (float) $match[1] / ( $match[2] ? 100 / 255 : 1 ),
 340                  'g' => (float) $match[3] / ( $match[4] ? 100 / 255 : 1 ),
 341                  'b' => (float) $match[5] / ( $match[6] ? 100 / 255 : 1 ),
 342                  'a' => '' === $match[7] ? 1 : (float) $match[7] / ( $match[8] ? 100 : 1 ),
 343              )
 344          );
 345      }
 346  
 347      /**
 348       * Clamps an array of HSLA values.
 349       *
 350       * Direct port of colord's clampHsla function.
 351       *
 352       * @link https://github.com/omgovich/colord/blob/3f859e03b0ca622eb15480f611371a0f15c9427f/src/colorModels/hsl.ts#L6 Sourced from colord.
 353       *
 354       * @internal
 355       *
 356       * @since 6.3.0
 357       *
 358       * @param array $hsla The HSLA array to clamp.
 359       * @return array The clamped HSLA array.
 360       */
 361  	private static function colord_clamp_hsla( $hsla ) {
 362          $hsla['h'] = self::colord_clamp_hue( $hsla['h'] );
 363          $hsla['s'] = self::colord_clamp( $hsla['s'], 0, 100 );
 364          $hsla['l'] = self::colord_clamp( $hsla['l'], 0, 100 );
 365          $hsla['a'] = self::colord_clamp( $hsla['a'] );
 366  
 367          return $hsla;
 368      }
 369  
 370      /**
 371       * Converts an HSVA array to RGBA.
 372       *
 373       * Direct port of colord's hsvaToRgba function.
 374       *
 375       * @link https://github.com/omgovich/colord/blob/3f859e03b0ca622eb15480f611371a0f15c9427f/src/colorModels/hsv.ts#L52 Sourced from colord.
 376       *
 377       * @internal
 378       *
 379       * @since 6.3.0
 380       *
 381       * @param array $hsva The HSVA array to convert.
 382       * @return array The RGBA array.
 383       */
 384  	private static function colord_hsva_to_rgba( $hsva ) {
 385          $h = ( $hsva['h'] / 360 ) * 6;
 386          $s = $hsva['s'] / 100;
 387          $v = $hsva['v'] / 100;
 388          $a = $hsva['a'];
 389  
 390          $hh     = floor( $h );
 391          $b      = $v * ( 1 - $s );
 392          $c      = $v * ( 1 - ( $h - $hh ) * $s );
 393          $d      = $v * ( 1 - ( 1 - $h + $hh ) * $s );
 394          $module = $hh % 6;
 395  
 396          return array(
 397              'r' => array( $v, $c, $b, $b, $d, $v )[ $module ] * 255,
 398              'g' => array( $d, $v, $v, $c, $b, $b )[ $module ] * 255,
 399              'b' => array( $b, $b, $d, $v, $v, $c )[ $module ] * 255,
 400              'a' => $a,
 401          );
 402      }
 403  
 404      /**
 405       * Converts an HSLA array to HSVA.
 406       *
 407       * Direct port of colord's hslaToHsva function.
 408       *
 409       * @link https://github.com/omgovich/colord/blob/3f859e03b0ca622eb15480f611371a0f15c9427f/src/colorModels/hsl.ts#L33 Sourced from colord.
 410       *
 411       * @internal
 412       *
 413       * @since 6.3.0
 414       *
 415       * @param array $hsla The HSLA array to convert.
 416       * @return array The HSVA array.
 417       */
 418  	private static function colord_hsla_to_hsva( $hsla ) {
 419          $h = $hsla['h'];
 420          $s = $hsla['s'];
 421          $l = $hsla['l'];
 422          $a = $hsla['a'];
 423  
 424          $s *= ( $l < 50 ? $l : 100 - $l ) / 100;
 425  
 426          return array(
 427              'h' => $h,
 428              's' => $s > 0 ? ( ( 2 * $s ) / ( $l + $s ) ) * 100 : 0,
 429              'v' => $l + $s,
 430              'a' => $a,
 431          );
 432      }
 433  
 434      /**
 435       * Converts an HSLA array to RGBA.
 436       *
 437       * Direct port of colord's hslaToRgba function.
 438       *
 439       * @link https://github.com/omgovich/colord/blob/3f859e03b0ca622eb15480f611371a0f15c9427f/src/colorModels/hsl.ts#L55 Sourced from colord.
 440       *
 441       * @internal
 442       *
 443       * @since 6.3.0
 444       *
 445       * @param array $hsla The HSLA array to convert.
 446       * @return array The RGBA array.
 447       */
 448  	private static function colord_hsla_to_rgba( $hsla ) {
 449          return self::colord_hsva_to_rgba( self::colord_hsla_to_hsva( $hsla ) );
 450      }
 451  
 452      /**
 453       * Parses a valid HSL[A] CSS color function/string.
 454       *
 455       * Direct port of colord's parseHslaString function.
 456       *
 457       * @link https://github.com/omgovich/colord/blob/3f859e03b0ca622eb15480f611371a0f15c9427f/src/colorModels/hslString.ts#L17 Sourced from colord.
 458       *
 459       * @internal
 460       *
 461       * @since 6.3.0
 462       *
 463       * @param string $input The HSLA string to parse.
 464       * @return array|null An array of RGBA values or null if the RGB string is invalid.
 465       */
 466  	private static function colord_parse_hsla_string( $input ) {
 467          // Functional syntax.
 468          $is_match = preg_match(
 469              '/^hsla?\(\s*([+-]?\d*\.?\d+)(deg|rad|grad|turn)?\s*,\s*([+-]?\d*\.?\d+)%\s*,\s*([+-]?\d*\.?\d+)%\s*(?:,\s*([+-]?\d*\.?\d+)(%)?\s*)?\)$/i',
 470              $input,
 471              $match
 472          );
 473  
 474          if ( ! $is_match ) {
 475              // Whitespace syntax.
 476              $is_match = preg_match(
 477                  '/^hsla?\(\s*([+-]?\d*\.?\d+)(deg|rad|grad|turn)?\s+([+-]?\d*\.?\d+)%\s+([+-]?\d*\.?\d+)%\s*(?:\/\s*([+-]?\d*\.?\d+)(%)?\s*)?\)$/i',
 478                  $input,
 479                  $match
 480              );
 481          }
 482  
 483          if ( ! $is_match ) {
 484              return null;
 485          }
 486  
 487          /*
 488           * For some reason, preg_match doesn't include empty matches at the end
 489           * of the array, so we add them manually to make things easier later.
 490           */
 491          for ( $i = 1; $i <= 6; $i++ ) {
 492              if ( ! isset( $match[ $i ] ) ) {
 493                  $match[ $i ] = '';
 494              }
 495          }
 496  
 497          $hsla = self::colord_clamp_hsla(
 498              array(
 499                  'h' => self::colord_parse_hue( $match[1], $match[2] ),
 500                  's' => (float) $match[3],
 501                  'l' => (float) $match[4],
 502                  'a' => '' === $match[5] ? 1 : (float) $match[5] / ( $match[6] ? 100 : 1 ),
 503              )
 504          );
 505  
 506          return self::colord_hsla_to_rgba( $hsla );
 507      }
 508  
 509      /**
 510       * Tries to convert an incoming string into RGBA values.
 511       *
 512       * Direct port of colord's parse function simplified for our use case. This
 513       * version only supports string parsing and only returns RGBA values.
 514       *
 515       * @link https://github.com/omgovich/colord/blob/3f859e03b0ca622eb15480f611371a0f15c9427f/src/parse.ts#L37 Sourced from colord.
 516       *
 517       * @internal
 518       *
 519       * @since 6.3.0
 520       *
 521       * @param string $input The string to parse.
 522       * @return array|null An array of RGBA values or null if the string is invalid.
 523       */
 524  	private static function colord_parse( $input ) {
 525          $result = self::colord_parse_hex( $input );
 526  
 527          if ( ! $result ) {
 528              $result = self::colord_parse_rgba_string( $input );
 529          }
 530  
 531          if ( ! $result ) {
 532              $result = self::colord_parse_hsla_string( $input );
 533          }
 534  
 535          return $result;
 536      }
 537  
 538      /**
 539       * Takes the inline CSS duotone variable from a block and return the slug.
 540       *
 541       * Handles styles slugs like:
 542       * var:preset|duotone|blue-orange
 543       * var(--wp--preset--duotone--blue-orange)
 544       *
 545       * @internal
 546       *
 547       * @since 6.3.0
 548       *
 549       * @param string $duotone_attr The duotone attribute from a block.
 550       * @return string The slug of the duotone preset or an empty string if no slug is found.
 551       */
 552  	private static function get_slug_from_attribute( $duotone_attr ) {
 553          // Uses Branch Reset Groups `(?|…)` to return one capture group.
 554          preg_match( '/(?|var:preset\|duotone\|(\S+)|var\(--wp--preset--duotone--(\S+)\))/', $duotone_attr, $matches );
 555  
 556          return ! empty( $matches[1] ) ? $matches[1] : '';
 557      }
 558  
 559      /**
 560       * Checks if we have a valid duotone preset.
 561       *
 562       * Valid presets are defined in the $global_styles_presets array.
 563       *
 564       * @internal
 565       *
 566       * @since 6.3.0
 567       *
 568       * @param string $duotone_attr The duotone attribute from a block.
 569       * @return bool True if the duotone preset present and valid.
 570       */
 571  	private static function is_preset( $duotone_attr ) {
 572          $slug      = self::get_slug_from_attribute( $duotone_attr );
 573          $filter_id = self::get_filter_id( $slug );
 574  
 575          return array_key_exists( $filter_id, self::get_all_global_styles_presets() );
 576      }
 577  
 578      /**
 579       * Gets the CSS variable name for a duotone preset.
 580       *
 581       * Example output:
 582       *  --wp--preset--duotone--blue-orange
 583       *
 584       * @internal
 585       *
 586       * @since 6.3.0
 587       *
 588       * @param string $slug The slug of the duotone preset.
 589       * @return string The CSS variable name.
 590       */
 591  	private static function get_css_custom_property_name( $slug ) {
 592          return "--wp--preset--duotone--$slug";
 593      }
 594  
 595      /**
 596       * Get the ID of the duotone filter.
 597       *
 598       * Example output:
 599       *  wp-duotone-blue-orange
 600       *
 601       * @internal
 602       *
 603       * @since 6.3.0
 604       *
 605       * @param string $slug The slug of the duotone preset.
 606       * @return string The ID of the duotone filter.
 607       */
 608  	private static function get_filter_id( $slug ) {
 609          return "wp-duotone-$slug";
 610      }
 611  
 612      /**
 613       * Get the CSS variable for a duotone preset.
 614       *
 615       * Example output:
 616       *  var(--wp--preset--duotone--blue-orange)
 617       *
 618       * @internal
 619       *
 620       * @since 6.3.0
 621       *
 622       * @param string $slug The slug of the duotone preset.
 623       * @return string The CSS variable.
 624       */
 625  	private static function get_css_var( $slug ) {
 626          $name = self::get_css_custom_property_name( $slug );
 627          return "var($name)";
 628      }
 629  
 630      /**
 631       * Get the URL for a duotone filter.
 632       *
 633       * Example output:
 634       *  url(#wp-duotone-blue-orange)
 635       *
 636       * @internal
 637       *
 638       * @since 6.3.0
 639       *
 640       * @param string $filter_id The ID of the filter.
 641       * @return string The URL for the duotone filter.
 642       */
 643  	private static function get_filter_url( $filter_id ) {
 644          return "url(#$filter_id)";
 645      }
 646  
 647      /**
 648       * Gets the SVG for the duotone filter definition.
 649       *
 650       * Whitespace is removed when SCRIPT_DEBUG is not enabled.
 651       *
 652       * @internal
 653       *
 654       * @since 6.3.0
 655       *
 656       * @param string $filter_id The ID of the filter.
 657       * @param array  $colors    An array of color strings.
 658       * @return string An SVG with a duotone filter definition.
 659       */
 660  	private static function get_filter_svg( $filter_id, $colors ) {
 661          $duotone_values = array(
 662              'r' => array(),
 663              'g' => array(),
 664              'b' => array(),
 665              'a' => array(),
 666          );
 667  
 668          foreach ( $colors as $color_str ) {
 669              $color = self::colord_parse( $color_str );
 670  
 671              if ( null === $color ) {
 672                  $error_message = sprintf(
 673                      /* translators: 1: Duotone colors, 2: theme.json, 3: settings.color.duotone */
 674                      __( '"%1$s" in %2$s %3$s is not a hex or rgb string.' ),
 675                      $color_str,
 676                      'theme.json',
 677                      'settings.color.duotone'
 678                  );
 679                  _doing_it_wrong( __METHOD__, $error_message, '6.3.0' );
 680              } else {
 681                  $duotone_values['r'][] = $color['r'] / 255;
 682                  $duotone_values['g'][] = $color['g'] / 255;
 683                  $duotone_values['b'][] = $color['b'] / 255;
 684                  $duotone_values['a'][] = $color['a'];
 685              }
 686          }
 687  
 688          ob_start();
 689  
 690          ?>
 691  
 692          <svg
 693              xmlns="http://www.w3.org/2000/svg"
 694              viewBox="0 0 0 0"
 695              width="0"
 696              height="0"
 697              focusable="false"
 698              role="none"
 699              style="visibility: hidden; position: absolute; left: -9999px; overflow: hidden;"
 700          >
 701              <defs>
 702                  <filter id="<?php echo esc_attr( $filter_id ); ?>">
 703                      <feColorMatrix
 704                          color-interpolation-filters="sRGB"
 705                          type="matrix"
 706                          values="
 707                              .299 .587 .114 0 0
 708                              .299 .587 .114 0 0
 709                              .299 .587 .114 0 0
 710                              .299 .587 .114 0 0
 711                          "
 712                      />
 713                      <feComponentTransfer color-interpolation-filters="sRGB" >
 714                          <feFuncR type="table" tableValues="<?php echo esc_attr( implode( ' ', $duotone_values['r'] ) ); ?>" />
 715                          <feFuncG type="table" tableValues="<?php echo esc_attr( implode( ' ', $duotone_values['g'] ) ); ?>" />
 716                          <feFuncB type="table" tableValues="<?php echo esc_attr( implode( ' ', $duotone_values['b'] ) ); ?>" />
 717                          <feFuncA type="table" tableValues="<?php echo esc_attr( implode( ' ', $duotone_values['a'] ) ); ?>" />
 718                      </feComponentTransfer>
 719                      <feComposite in2="SourceGraphic" operator="in" />
 720                  </filter>
 721              </defs>
 722          </svg>
 723  
 724          <?php
 725  
 726          $svg = ob_get_clean();
 727  
 728          if ( ! SCRIPT_DEBUG ) {
 729              // Clean up the whitespace.
 730              $svg = preg_replace( "/[\r\n\t ]+/", ' ', $svg );
 731              $svg = str_replace( '> <', '><', $svg );
 732              $svg = trim( $svg );
 733          }
 734  
 735          return $svg;
 736      }
 737  
 738      /**
 739       * Returns the prefixed id for the duotone filter for use as a CSS id.
 740       *
 741       * Exported for the deprecated function wp_get_duotone_filter_id().
 742       *
 743       * @internal
 744       *
 745       * @since 6.3.0
 746       * @deprecated 6.3.0
 747       *
 748       * @param  array $preset Duotone preset value as seen in theme.json.
 749       * @return string        Duotone filter CSS id.
 750       */
 751  	public static function get_filter_id_from_preset( $preset ) {
 752          _deprecated_function( __FUNCTION__, '6.3.0' );
 753  
 754          $filter_id = '';
 755          if ( isset( $preset['slug'] ) ) {
 756              $filter_id = self::get_filter_id( $preset['slug'] );
 757          }
 758          return $filter_id;
 759      }
 760  
 761      /**
 762       * Gets the SVG for the duotone filter definition from a preset.
 763       *
 764       * Exported for the deprecated function wp_get_duotone_filter_property().
 765       *
 766       * @internal
 767       *
 768       * @since 6.3.0
 769       * @deprecated 6.3.0
 770       *
 771       * @param array $preset The duotone preset.
 772       * @return string The SVG for the filter definition.
 773       */
 774  	public static function get_filter_svg_from_preset( $preset ) {
 775          _deprecated_function( __FUNCTION__, '6.3.0' );
 776  
 777          $filter_id = self::get_filter_id_from_preset( $preset );
 778          return self::get_filter_svg( $filter_id, $preset['colors'] );
 779      }
 780  
 781      /**
 782       * Get the SVGs for the duotone filters.
 783       *
 784       * Example output:
 785       *  <svg><defs><filter id="wp-duotone-blue-orange">…</filter></defs></svg><svg>…</svg>
 786       *
 787       * @internal
 788       *
 789       * @since 6.3.0
 790       *
 791       * @param array $sources The duotone presets.
 792       * @return string The SVGs for the duotone filters.
 793       */
 794  	private static function get_svg_definitions( $sources ) {
 795          $svgs = '';
 796          foreach ( $sources as $filter_id => $filter_data ) {
 797              $colors = $filter_data['colors'];
 798              $svgs  .= self::get_filter_svg( $filter_id, $colors );
 799          }
 800          return $svgs;
 801      }
 802  
 803      /**
 804       * Get the CSS for global styles.
 805       *
 806       * Example output:
 807       *  body{--wp--preset--duotone--blue-orange:url('#wp-duotone-blue-orange');}
 808       *
 809       * @internal
 810       *
 811       * @since 6.3.0
 812       * @since 6.6.0 Replaced body selector with `WP_Theme_JSON::ROOT_CSS_PROPERTIES_SELECTOR`.
 813       *
 814       * @param array $sources The duotone presets.
 815       * @return string The CSS for global styles.
 816       */
 817  	private static function get_global_styles_presets( $sources ) {
 818          $css = WP_Theme_JSON::ROOT_CSS_PROPERTIES_SELECTOR . '{';
 819          foreach ( $sources as $filter_id => $filter_data ) {
 820              $slug              = $filter_data['slug'];
 821              $colors            = $filter_data['colors'];
 822              $css_property_name = self::get_css_custom_property_name( $slug );
 823              $declaration_value = is_string( $colors ) ? $colors : self::get_filter_url( $filter_id );
 824              $css              .= "$css_property_name:$declaration_value;";
 825          }
 826          $css .= '}';
 827          return $css;
 828      }
 829  
 830      /**
 831       * Enqueue a block CSS declaration for the page.
 832       *
 833       * This does not include any SVGs.
 834       *
 835       * @internal
 836       *
 837       * @since 6.3.0
 838       *
 839       * @param string $filter_id        The filter ID. e.g. 'wp-duotone-000000-ffffff-2'.
 840       * @param string $duotone_selector The block's duotone selector. e.g. '.wp-block-image img'.
 841       * @param string $filter_value     The filter CSS value. e.g. 'url(#wp-duotone-000000-ffffff-2)' or 'unset'.
 842       */
 843  	private static function enqueue_block_css( $filter_id, $duotone_selector, $filter_value ) {
 844          // Build the CSS selectors to which the filter will be applied.
 845          $selectors = explode( ',', $duotone_selector );
 846  
 847          $selectors_scoped = array();
 848          foreach ( $selectors as $selector_part ) {
 849              /*
 850               * Assuming the selector part is a subclass selector (not a tag name)
 851               * so we can prepend the filter id class. If we want to support elements
 852               * such as `img` or namespaces, we'll need to add a case for that here.
 853               */
 854              $selectors_scoped[] = '.' . $filter_id . trim( $selector_part );
 855          }
 856  
 857          $selector = implode( ', ', $selectors_scoped );
 858  
 859          self::$block_css_declarations[] = array(
 860              'selector'     => $selector,
 861              'declarations' => array(
 862                  'filter' => $filter_value,
 863              ),
 864          );
 865      }
 866  
 867      /**
 868       * Enqueue custom filter assets for the page.
 869       *
 870       * Includes an SVG filter and block CSS declaration.
 871       *
 872       * @internal
 873       *
 874       * @since 6.3.0
 875       *
 876       * @param string $filter_id        The filter ID. e.g. 'wp-duotone-000000-ffffff-2'.
 877       * @param string $duotone_selector The block's duotone selector. e.g. '.wp-block-image img'.
 878       * @param string $filter_value     The filter CSS value. e.g. 'url(#wp-duotone-000000-ffffff-2)' or 'unset'.
 879       * @param array  $filter_data      Duotone filter data with 'slug' and 'colors' keys.
 880       */
 881  	private static function enqueue_custom_filter( $filter_id, $duotone_selector, $filter_value, $filter_data ) {
 882          self::$used_svg_filter_data[ $filter_id ] = $filter_data;
 883          self::enqueue_block_css( $filter_id, $duotone_selector, $filter_value );
 884      }
 885  
 886      /**
 887       * Enqueue preset assets for the page.
 888       *
 889       * Includes a CSS custom property, SVG filter, and block CSS declaration.
 890       *
 891       * @internal
 892       *
 893       * @since 6.3.0
 894       *
 895       * @param string $filter_id        The filter ID. e.g. 'wp-duotone-blue-orange'.
 896       * @param string $duotone_selector The block's duotone selector. e.g. '.wp-block-image img'.
 897       * @param string $filter_value     The filter CSS value. e.g. 'url(#wp-duotone-blue-orange)' or 'unset'.
 898       */
 899  	private static function enqueue_global_styles_preset( $filter_id, $duotone_selector, $filter_value ) {
 900          $global_styles_presets = self::get_all_global_styles_presets();
 901          if ( ! array_key_exists( $filter_id, $global_styles_presets ) ) {
 902              $error_message = sprintf(
 903                  /* translators: 1: Duotone filter ID, 2: theme.json */
 904                  __( 'The duotone id "%1$s" is not registered in %2$s settings' ),
 905                  $filter_id,
 906                  'theme.json'
 907              );
 908              _doing_it_wrong( __METHOD__, $error_message, '6.3.0' );
 909              return;
 910          }
 911          self::$used_global_styles_presets[ $filter_id ] = $global_styles_presets[ $filter_id ];
 912          self::enqueue_custom_filter( $filter_id, $duotone_selector, $filter_value, $global_styles_presets[ $filter_id ] );
 913      }
 914  
 915      /**
 916       * Registers the style and colors block attributes for block types that support it.
 917       *
 918       * Block support is added with `supports.filter.duotone` in block.json.
 919       *
 920       * @since 6.3.0
 921       *
 922       * @param WP_Block_Type $block_type Block Type.
 923       */
 924  	public static function register_duotone_support( $block_type ) {
 925          /*
 926           * Previous `color.__experimentalDuotone` support flag is migrated
 927           * to `filter.duotone` via `block_type_metadata_settings` filter.
 928           */
 929          if ( block_has_support( $block_type, array( 'filter', 'duotone' ), null ) ) {
 930              if ( ! $block_type->attributes ) {
 931                  $block_type->attributes = array();
 932              }
 933  
 934              if ( ! array_key_exists( 'style', $block_type->attributes ) ) {
 935                  $block_type->attributes['style'] = array(
 936                      'type' => 'object',
 937                  );
 938              }
 939          }
 940      }
 941  
 942      /**
 943       * Get the CSS selector for a block type.
 944       *
 945       * This handles selectors defined in `color.__experimentalDuotone` support
 946       * if `filter.duotone` support is not defined.
 947       *
 948       * @internal
 949       * @since 6.3.0
 950       *
 951       * @param WP_Block_Type $block_type Block type to check for support.
 952       * @return string|null The CSS selector or null if there is no support.
 953       */
 954  	private static function get_selector( $block_type ) {
 955          if ( ! ( $block_type instanceof WP_Block_Type ) ) {
 956              return null;
 957          }
 958  
 959          /*
 960           * Backward compatibility with `supports.color.__experimentalDuotone`
 961           * is provided via the `block_type_metadata_settings` filter. If
 962           * `supports.filter.duotone` has not been set and the experimental
 963           * property has been, the experimental property value is copied into
 964           * `supports.filter.duotone`.
 965           */
 966          $duotone_support = block_has_support( $block_type, array( 'filter', 'duotone' ) );
 967          if ( ! $duotone_support ) {
 968              return null;
 969          }
 970  
 971          /*
 972           * If the experimental duotone support was set, that value is to be
 973           * treated as a selector and requires scoping.
 974           */
 975          $experimental_duotone = isset( $block_type->supports['color']['__experimentalDuotone'] )
 976              ? $block_type->supports['color']['__experimentalDuotone']
 977              : false;
 978          if ( $experimental_duotone ) {
 979              $root_selector = wp_get_block_css_selector( $block_type );
 980              return is_string( $experimental_duotone )
 981                  ? WP_Theme_JSON::scope_selector( $root_selector, $experimental_duotone )
 982                  : $root_selector;
 983          }
 984  
 985          // Regular filter.duotone support uses filter.duotone selectors with fallbacks.
 986          return wp_get_block_css_selector( $block_type, array( 'filter', 'duotone' ), true );
 987      }
 988  
 989      /**
 990       * Scrape all possible duotone presets from global and theme styles and
 991       * store them in self::$global_styles_presets.
 992       *
 993       * Used in conjunction with self::render_duotone_support for blocks that
 994       * use duotone preset filters.
 995       *
 996       * @since 6.3.0
 997       *
 998       * @return array An array of global styles presets, keyed on the filter ID.
 999       */
1000  	private static function get_all_global_styles_presets() {
1001          if ( isset( self::$global_styles_presets ) ) {
1002              return self::$global_styles_presets;
1003          }
1004          // Get the per block settings from the theme.json.
1005          $tree              = wp_get_global_settings();
1006          $presets_by_origin = isset( $tree['color']['duotone'] ) ? $tree['color']['duotone'] : array();
1007  
1008          self::$global_styles_presets = array();
1009          foreach ( $presets_by_origin as $presets ) {
1010              foreach ( $presets as $preset ) {
1011                  $filter_id = self::get_filter_id( _wp_to_kebab_case( $preset['slug'] ) );
1012  
1013                  self::$global_styles_presets[ $filter_id ] = $preset;
1014              }
1015          }
1016  
1017          return self::$global_styles_presets;
1018      }
1019  
1020      /**
1021       * Scrape all block names from global styles and store in self::$global_styles_block_names.
1022       *
1023       * Used in conjunction with self::render_duotone_support to output the
1024       * duotone filters defined in the theme.json global styles.
1025       *
1026       * @since 6.3.0
1027       *
1028       * @return string[] An array of global style block slugs, keyed on the block name.
1029       */
1030  	private static function get_all_global_style_block_names() {
1031          if ( isset( self::$global_styles_block_names ) ) {
1032              return self::$global_styles_block_names;
1033          }
1034          // Get the per block settings from the theme.json.
1035          $tree        = WP_Theme_JSON_Resolver::get_merged_data();
1036          $block_nodes = $tree->get_styles_block_nodes();
1037          $theme_json  = $tree->get_raw_data();
1038  
1039          self::$global_styles_block_names = array();
1040  
1041          foreach ( $block_nodes as $block_node ) {
1042              // This block definition doesn't include any duotone settings. Skip it.
1043              if ( empty( $block_node['duotone'] ) ) {
1044                  continue;
1045              }
1046  
1047              // Value looks like this: 'var(--wp--preset--duotone--blue-orange)' or 'var:preset|duotone|blue-orange'.
1048              $duotone_attr_path = array_merge( $block_node['path'], array( 'filter', 'duotone' ) );
1049              $duotone_attr      = _wp_array_get( $theme_json, $duotone_attr_path, array() );
1050  
1051              if ( empty( $duotone_attr ) ) {
1052                  continue;
1053              }
1054              // If it has a duotone filter preset, save the block name and the preset slug.
1055              $slug = self::get_slug_from_attribute( $duotone_attr );
1056  
1057              if ( $slug && $slug !== $duotone_attr ) {
1058                  self::$global_styles_block_names[ $block_node['name'] ] = $slug;
1059              }
1060          }
1061          return self::$global_styles_block_names;
1062      }
1063  
1064      /**
1065       * Render out the duotone CSS styles and SVG.
1066       *
1067       * The hooks self::set_global_style_block_names and self::set_global_styles_presets
1068       * must be called before this function.
1069       *
1070       * @since 6.3.0
1071       *
1072       * @param  string   $block_content Rendered block content.
1073       * @param  array    $block         Block object.
1074       * @param  WP_Block $wp_block      The block instance.
1075       * @return string Filtered block content.
1076       */
1077  	public static function render_duotone_support( $block_content, $block, $wp_block ) {
1078          if ( ! $block['blockName'] ) {
1079              return $block_content;
1080          }
1081          $duotone_selector = self::get_selector( $wp_block->block_type );
1082  
1083          if ( ! $duotone_selector ) {
1084              return $block_content;
1085          }
1086  
1087          $global_styles_block_names = self::get_all_global_style_block_names();
1088  
1089          // The block should have a duotone attribute or have duotone defined in its theme.json to be processed.
1090          $has_duotone_attribute     = isset( $block['attrs']['style']['color']['duotone'] );
1091          $has_global_styles_duotone = array_key_exists( $block['blockName'], $global_styles_block_names );
1092  
1093          if ( ! $has_duotone_attribute && ! $has_global_styles_duotone ) {
1094              return $block_content;
1095          }
1096  
1097          // Generate the pieces needed for rendering a duotone to the page.
1098          if ( $has_duotone_attribute ) {
1099  
1100              /*
1101               * Possible values for duotone attribute:
1102               * 1. Array of colors - e.g. array('#000000', '#ffffff').
1103               * 2. Variable for an existing Duotone preset - e.g. 'var:preset|duotone|blue-orange' or 'var(--wp--preset--duotone--blue-orange)''
1104               * 3. A CSS string - e.g. 'unset' to remove globally applied duotone.
1105               */
1106  
1107              $duotone_attr = $block['attrs']['style']['color']['duotone'];
1108              $is_preset    = is_string( $duotone_attr ) && self::is_preset( $duotone_attr );
1109              $is_css       = is_string( $duotone_attr ) && ! $is_preset;
1110              $is_custom    = is_array( $duotone_attr );
1111  
1112              if ( $is_preset ) {
1113  
1114                  $slug         = self::get_slug_from_attribute( $duotone_attr ); // e.g. 'blue-orange'.
1115                  $filter_id    = self::get_filter_id( $slug ); // e.g. 'wp-duotone-filter-blue-orange'.
1116                  $filter_value = self::get_css_var( $slug ); // e.g. 'var(--wp--preset--duotone--blue-orange)'.
1117  
1118                  // CSS custom property, SVG filter, and block CSS.
1119                  self::enqueue_global_styles_preset( $filter_id, $duotone_selector, $filter_value );
1120  
1121              } elseif ( $is_css ) {
1122                  $slug         = wp_unique_id( sanitize_key( $duotone_attr . '-' ) ); // e.g. 'unset-1'.
1123                  $filter_id    = self::get_filter_id( $slug ); // e.g. 'wp-duotone-filter-unset-1'.
1124                  $filter_value = $duotone_attr; // e.g. 'unset'.
1125  
1126                  // Just block CSS.
1127                  self::enqueue_block_css( $filter_id, $duotone_selector, $filter_value );
1128              } elseif ( $is_custom ) {
1129                  $slug         = wp_unique_id( sanitize_key( implode( '-', $duotone_attr ) . '-' ) ); // e.g. '000000-ffffff-2'.
1130                  $filter_id    = self::get_filter_id( $slug ); // e.g. 'wp-duotone-filter-000000-ffffff-2'.
1131                  $filter_value = self::get_filter_url( $filter_id ); // e.g. 'url(#wp-duotone-filter-000000-ffffff-2)'.
1132                  $filter_data  = array(
1133                      'slug'   => $slug,
1134                      'colors' => $duotone_attr,
1135                  );
1136  
1137                  // SVG filter and block CSS.
1138                  self::enqueue_custom_filter( $filter_id, $duotone_selector, $filter_value, $filter_data );
1139              }
1140          } elseif ( $has_global_styles_duotone ) {
1141              $slug         = $global_styles_block_names[ $block['blockName'] ]; // e.g. 'blue-orange'.
1142              $filter_id    = self::get_filter_id( $slug ); // e.g. 'wp-duotone-filter-blue-orange'.
1143              $filter_value = self::get_css_var( $slug ); // e.g. 'var(--wp--preset--duotone--blue-orange)'.
1144  
1145              // CSS custom property, SVG filter, and block CSS.
1146              self::enqueue_global_styles_preset( $filter_id, $duotone_selector, $filter_value );
1147          }
1148  
1149          // Like the layout hook, this assumes the hook only applies to blocks with a single wrapper.
1150          $tags = new WP_HTML_Tag_Processor( $block_content );
1151          if ( $tags->next_tag() ) {
1152              $tags->add_class( $filter_id );
1153          }
1154          return $tags->get_updated_html();
1155      }
1156  
1157      /**
1158       * Fixes the issue with our generated class name not being added to the block's outer container
1159       * in classic themes due to gutenberg_restore_image_outer_container from layout block supports.
1160       *
1161       * @since 6.6.0
1162       *
1163       * @param string $block_content Rendered block content.
1164       * @return string Filtered block content.
1165       */
1166  	public static function restore_image_outer_container( $block_content ) {
1167          if ( wp_theme_has_theme_json() ) {
1168              return $block_content;
1169          }
1170  
1171          $tags          = new WP_HTML_Tag_Processor( $block_content );
1172          $wrapper_query = array(
1173              'tag_name'   => 'div',
1174              'class_name' => 'wp-block-image',
1175          );
1176          if ( ! $tags->next_tag( $wrapper_query ) ) {
1177              return $block_content;
1178          }
1179  
1180          $tags->set_bookmark( 'wrapper-div' );
1181          $tags->next_tag();
1182  
1183          $inner_classnames = explode( ' ', $tags->get_attribute( 'class' ) );
1184          foreach ( $inner_classnames as $classname ) {
1185              if ( 0 === strpos( $classname, 'wp-duotone' ) ) {
1186                  $tags->remove_class( $classname );
1187                  $tags->seek( 'wrapper-div' );
1188                  $tags->add_class( $classname );
1189                  break;
1190              }
1191          }
1192  
1193          return $tags->get_updated_html();
1194      }
1195  
1196      /**
1197       * Appends the used block duotone filter declarations to the inline block supports CSS.
1198       *
1199       * Uses the declarations saved in earlier calls to self::enqueue_block_css.
1200       *
1201       * @since 6.3.0
1202       */
1203  	public static function output_block_styles() {
1204          if ( ! empty( self::$block_css_declarations ) ) {
1205              wp_style_engine_get_stylesheet_from_css_rules(
1206                  self::$block_css_declarations,
1207                  array(
1208                      'context' => 'block-supports',
1209                  )
1210              );
1211          }
1212      }
1213  
1214      /**
1215       * Appends the used global style duotone filter presets (CSS custom
1216       * properties) to the inline global styles CSS.
1217       *
1218       * Uses the declarations saved in earlier calls to self::enqueue_global_styles_preset.
1219       *
1220       * @since 6.3.0
1221       */
1222  	public static function output_global_styles() {
1223          if ( ! empty( self::$used_global_styles_presets ) ) {
1224              wp_add_inline_style( 'global-styles', self::get_global_styles_presets( self::$used_global_styles_presets ) );
1225          }
1226      }
1227  
1228      /**
1229       * Outputs all necessary SVG for duotone filters, CSS for classic themes.
1230       *
1231       * Uses the declarations saved in earlier calls to self::enqueue_global_styles_preset
1232       * and self::enqueue_custom_filter.
1233       *
1234       * @since 6.3.0
1235       */
1236  	public static function output_footer_assets() {
1237          if ( ! empty( self::$used_svg_filter_data ) ) {
1238              echo self::get_svg_definitions( self::$used_svg_filter_data );
1239          }
1240  
1241          // In block themes, the CSS is added in the head via wp_add_inline_style in the wp_enqueue_scripts action.
1242          if ( ! wp_is_block_theme() ) {
1243              $style_tag_id = 'core-block-supports-duotone';
1244              wp_register_style( $style_tag_id, false );
1245              if ( ! empty( self::$used_global_styles_presets ) ) {
1246                  wp_add_inline_style( $style_tag_id, self::get_global_styles_presets( self::$used_global_styles_presets ) );
1247              }
1248              if ( ! empty( self::$block_css_declarations ) ) {
1249                  wp_add_inline_style( $style_tag_id, wp_style_engine_get_stylesheet_from_css_rules( self::$block_css_declarations ) );
1250              }
1251              wp_enqueue_style( $style_tag_id );
1252          }
1253      }
1254  
1255      /**
1256       * Adds the duotone SVGs and CSS custom properties to the editor settings.
1257       *
1258       * This allows the properties to be pulled in by the EditorStyles component
1259       * in JS and rendered in the post editor.
1260       *
1261       * @since 6.3.0
1262       *
1263       * @param array $settings The block editor settings from the `block_editor_settings_all` filter.
1264       * @return array The editor settings with duotone SVGs and CSS custom properties.
1265       */
1266  	public static function add_editor_settings( $settings ) {
1267          $global_styles_presets = self::get_all_global_styles_presets();
1268          if ( ! empty( $global_styles_presets ) ) {
1269              if ( ! isset( $settings['styles'] ) ) {
1270                  $settings['styles'] = array();
1271              }
1272  
1273              $settings['styles'][] = array(
1274                  // For the editor we can add all of the presets by default.
1275                  'assets'         => self::get_svg_definitions( $global_styles_presets ),
1276                  // The 'svgs' type is new in 6.3 and requires the corresponding JS changes in the EditorStyles component to work.
1277                  '__unstableType' => 'svgs',
1278                  // These styles not generated by global styles, so this must be false or they will be stripped out in wp_get_block_editor_settings.
1279                  'isGlobalStyles' => false,
1280              );
1281  
1282              $settings['styles'][] = array(
1283                  // For the editor we can add all of the presets by default.
1284                  'css'            => self::get_global_styles_presets( $global_styles_presets ),
1285                  // This must be set and must be something other than 'theme' or they will be stripped out in the post editor <Editor> component.
1286                  '__unstableType' => 'presets',
1287                  // These styles are no longer generated by global styles, so this must be false or they will be stripped out in wp_get_block_editor_settings.
1288                  'isGlobalStyles' => false,
1289              );
1290          }
1291  
1292          return $settings;
1293      }
1294  
1295      /**
1296       * Migrates the experimental duotone support flag to the stabilized location.
1297       *
1298       * This moves `supports.color.__experimentalDuotone` to `supports.filter.duotone`.
1299       *
1300       * @since 6.3.0
1301       *
1302       * @param array $settings Current block type settings.
1303       * @param array $metadata Block metadata as read in via block.json.
1304       * @return array Filtered block type settings.
1305       */
1306  	public static function migrate_experimental_duotone_support_flag( $settings, $metadata ) {
1307          $duotone_support = isset( $metadata['supports']['color']['__experimentalDuotone'] )
1308              ? $metadata['supports']['color']['__experimentalDuotone']
1309              : null;
1310  
1311          if ( ! isset( $settings['supports']['filter']['duotone'] ) && null !== $duotone_support ) {
1312              _wp_array_set( $settings, array( 'supports', 'filter', 'duotone' ), (bool) $duotone_support );
1313          }
1314  
1315          return $settings;
1316      }
1317  
1318      /**
1319       * Gets the CSS filter property value from a preset.
1320       *
1321       * Exported for the deprecated function wp_get_duotone_filter_id().
1322       *
1323       * @internal
1324       *
1325       * @since 6.3.0
1326       * @deprecated 6.3.0
1327       *
1328       * @param array $preset The duotone preset.
1329       * @return string The CSS filter property value.
1330       */
1331  	public static function get_filter_css_property_value_from_preset( $preset ) {
1332          _deprecated_function( __FUNCTION__, '6.3.0' );
1333  
1334          if ( isset( $preset['colors'] ) && is_string( $preset['colors'] ) ) {
1335              return $preset['colors'];
1336          }
1337  
1338          $filter_id = self::get_filter_id_from_preset( $preset );
1339  
1340          return 'url(#' . $filter_id . ')';
1341      }
1342  }


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