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/**
 * WP_Duotone class
 *
 * Parts of this source were derived and modified from colord,
 * released under the MIT license.
 *
 * https://github.com/omgovich/colord
 *
 * Copyright (c) 2020 Vlad Shilov omgovich@ya.ru
 *
 * Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files (the
 * &quot;Software&quot;), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sublicense, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 *
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED &quot;AS IS&quot;, WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 *
 * @package WordPress
 * @since 6.3.0
 */

/**
 * Manages duotone block supports and global styles.
 *
 * @access private
 */
class WP_Duotone {
	/**
	 * Block names from global, theme, and custom styles that use duotone presets and the slug of
	 * the preset they are using.
	 *
	 * Example:
	 *  [
	 *      &#039;core/featured-image&#039; =&gt; &#039;blue-orange&#039;,
	 *       …
	 *  ]
	 *
	 * @internal
	 *
	 * @since 6.3.0
	 *
	 * @var ?array
	 */
	private static $global_styles_block_names;

	/**
	 * An array of duotone filter data from global, theme, and custom presets.
	 *
	 * Example:
	 *  [
	 *      &#039;wp-duotone-blue-orange&#039; =&gt; [
	 *          &#039;slug&#039;  =&gt; &#039;blue-orange&#039;,
	 *          &#039;colors&#039; =&gt; [ &#039;#0000ff&#039;, &#039;#ffcc00&#039; ],
	 *      ],
	 *      &#039;wp-duotone-red-yellow&#039; =&gt; [
	 *          &#039;slug&#039;   =&gt; &#039;red-yellow&#039;,
	 *          &#039;colors&#039; =&gt; [ &#039;#cc0000&#039;, &#039;#ffff33&#039; ],
	 *      ],
	 *      …
	 *  ]
	 *
	 * @internal
	 *
	 * @since 6.3.0
	 *
	 * @var ?array
	 */
	private static $global_styles_presets;

	/**
	 * All of the duotone filter data from presets for CSS custom properties on
	 * the page.
	 *
	 * Example:
	 *  [
	 *      &#039;wp-duotone-blue-orange&#039; =&gt; [
	 *          &#039;slug&#039;   =&gt; &#039;blue-orange&#039;,
	 *          &#039;colors&#039; =&gt; [ &#039;#0000ff&#039;, &#039;#ffcc00&#039; ],
	 *      ],
	 *      …
	 *  ]
	 *
	 * @internal
	 *
	 * @since 6.3.0
	 *
	 * @var array
	 */
	private static $used_global_styles_presets = array();

	/**
	 * All of the duotone filter data for SVGs on the page. Includes both
	 * presets and custom filters.
	 *
	 * Example:
	 *  [
	 *      &#039;wp-duotone-blue-orange&#039; =&gt; [
	 *          &#039;slug&#039;   =&gt; &#039;blue-orange&#039;,
	 *          &#039;colors&#039; =&gt; [ &#039;#0000ff&#039;, &#039;#ffcc00&#039; ],
	 *      ],
	 *      &#039;wp-duotone-000000-ffffff-2&#039; =&gt; [
	 *          &#039;slug&#039;   =&gt; &#039;000000-ffffff-2&#039;,
	 *          &#039;colors&#039; =&gt; [ &#039;#000000&#039;, &#039;#ffffff&#039; ],
	 *      ],
	 *      …
	 *  ]
	 *
	 * @internal
	 *
	 * @since 6.3.0
	 *
	 * @var array
	 */
	private static $used_svg_filter_data = array();

	/**
	 * All of the block CSS declarations for styles on the page.
	 *
	 * Example:
	 *  [
	 *      [
	 *          &#039;selector&#039;     =&gt; &#039;.wp-duotone-000000-ffffff-2.wp-block-image img&#039;,
	 *          &#039;declarations&#039; =&gt; [
	 *              &#039;filter&#039; =&gt; &#039;url(#wp-duotone-000000-ffffff-2)&#039;,
	 *          ],
	 *      ],
	 *      …
	 *  ]
	 *
	 * @internal
	 *
	 * @since 6.3.0
	 *
	 * @var array
	 */
	private static $block_css_declarations = array();

	/**
	 * Clamps a value between an upper and lower bound.
	 *
	 * Direct port of colord&#039;s clamp function.
	 *
	 * @link https://github.com/omgovich/colord/blob/3f859e03b0ca622eb15480f611371a0f15c9427f/src/helpers.ts#L23 Sourced from colord.
	 *
	 * @internal
	 *
	 * @since 6.3.0
	 *
	 * @param float $number The number to clamp.
	 * @param float $min    The minimum value.
	 * @param float $max    The maximum value.
	 * @return float The clamped value.
	 */
	private static function colord_clamp( $number, $min = 0, $max = 1 ) {
		return $number &gt; $max ? $max : ( $number &gt; $min ? $number : $min );
	}

	/**
	 * Processes and clamps a degree (angle) value properly.
	 *
	 * Direct port of colord&#039;s clampHue function.
	 *
	 * @link https://github.com/omgovich/colord/blob/3f859e03b0ca622eb15480f611371a0f15c9427f/src/helpers.ts#L32 Sourced from colord.
	 *
	 * @internal
	 *
	 * @since 6.3.0
	 *
	 * @param float $degrees The hue to clamp.
	 * @return float The clamped hue.
	 */
	private static function colord_clamp_hue( $degrees ) {
		$degrees = is_finite( $degrees ) ? $degrees % 360 : 0;
		return $degrees &gt; 0 ? $degrees : $degrees + 360;
	}

	/**
	 * Converts a hue value to degrees from 0 to 360 inclusive.
	 *
	 * Direct port of colord&#039;s parseHue function.
	 *
	 * @link https://github.com/omgovich/colord/blob/3f859e03b0ca622eb15480f611371a0f15c9427f/src/helpers.ts#L40 Sourced from colord.
	 *
	 * @internal
	 *
	 * @since 6.3.0
	 *
	 * @param float  $value The hue value to parse.
	 * @param string $unit  The unit of the hue value.
	 * @return float The parsed hue value.
	 */
	private static function colord_parse_hue( $value, $unit = &#039;deg&#039; ) {
		$angle_units = array(
			&#039;grad&#039; =&gt; 360 / 400,
			&#039;turn&#039; =&gt; 360,
			&#039;rad&#039;  =&gt; 360 / ( M_PI * 2 ),
		);

		$factor = $angle_units[ $unit ] ?? 1;

		return (float) $value * $factor;
	}

	/**
	 * Parses any valid Hex3, Hex4, Hex6 or Hex8 string and converts it to an RGBA object.
	 *
	 * Direct port of colord&#039;s parseHex function.
	 *
	 * @link https://github.com/omgovich/colord/blob/3f859e03b0ca622eb15480f611371a0f15c9427f/src/colorModels/hex.ts#L8 Sourced from colord.
	 *
	 * @internal
	 *
	 * @since 6.3.0
	 *
	 * @param string $hex The hex string to parse.
	 * @return array|null An array of RGBA values or null if the hex string is invalid.
	 */
	private static function colord_parse_hex( $hex ) {
		$is_match = preg_match(
			&#039;/^#([0-9a-f]{3,8})$/i&#039;,
			$hex,
			$hex_match
		);

		if ( ! $is_match ) {
			return null;
		}

		$hex = $hex_match[1];

		if ( 4 &gt;= strlen( $hex ) ) {
			return array(
				&#039;r&#039; =&gt; (int) base_convert( $hex[0] . $hex[0], 16, 10 ),
				&#039;g&#039; =&gt; (int) base_convert( $hex[1] . $hex[1], 16, 10 ),
				&#039;b&#039; =&gt; (int) base_convert( $hex[2] . $hex[2], 16, 10 ),
				&#039;a&#039; =&gt; 4 === strlen( $hex ) ? round( (int) base_convert( $hex[3] . $hex[3], 16, 10 ) / 255, 2 ) : 1,
			);
		}

		if ( 6 === strlen( $hex ) || 8 === strlen( $hex ) ) {
			return array(
				&#039;r&#039; =&gt; (int) base_convert( substr( $hex, 0, 2 ), 16, 10 ),
				&#039;g&#039; =&gt; (int) base_convert( substr( $hex, 2, 2 ), 16, 10 ),
				&#039;b&#039; =&gt; (int) base_convert( substr( $hex, 4, 2 ), 16, 10 ),
				&#039;a&#039; =&gt; 8 === strlen( $hex ) ? round( (int) base_convert( substr( $hex, 6, 2 ), 16, 10 ) / 255, 2 ) : 1,
			);
		}

		return null;
	}

	/**
	 * Clamps an array of RGBA values.
	 *
	 * Direct port of colord&#039;s clampRgba function.
	 *
	 * @link https://github.com/omgovich/colord/blob/3f859e03b0ca622eb15480f611371a0f15c9427f/src/colorModels/rgb.ts#L5 Sourced from colord.
	 *
	 * @internal
	 *
	 * @since 6.3.0
	 *
	 * @param array $rgba The RGBA array to clamp.
	 * @return array The clamped RGBA array.
	 */
	private static function colord_clamp_rgba( $rgba ) {
		$rgba[&#039;r&#039;] = self::colord_clamp( $rgba[&#039;r&#039;], 0, 255 );
		$rgba[&#039;g&#039;] = self::colord_clamp( $rgba[&#039;g&#039;], 0, 255 );
		$rgba[&#039;b&#039;] = self::colord_clamp( $rgba[&#039;b&#039;], 0, 255 );
		$rgba[&#039;a&#039;] = self::colord_clamp( $rgba[&#039;a&#039;] );

		return $rgba;
	}

	/**
	 * Parses a valid RGB[A] CSS color function/string.
	 *
	 * Direct port of colord&#039;s parseRgbaString function.
	 *
	 * @link https://github.com/omgovich/colord/blob/3f859e03b0ca622eb15480f611371a0f15c9427f/src/colorModels/rgbString.ts#L18 Sourced from colord.
	 *
	 * @internal
	 *
	 * @since 6.3.0
	 *
	 * @param string $input The RGBA string to parse.
	 * @return array|null An array of RGBA values or null if the RGB string is invalid.
	 */
	private static function colord_parse_rgba_string( $input ) {
		// Functional syntax.
		$is_match = preg_match(
			&#039;/^rgba?\(\s*([+-]?\d*\.?\d+)(%)?\s*,\s*([+-]?\d*\.?\d+)(%)?\s*,\s*([+-]?\d*\.?\d+)(%)?\s*(?:,\s*([+-]?\d*\.?\d+)(%)?\s*)?\)$/i&#039;,
			$input,
			$match
		);

		if ( ! $is_match ) {
			// Whitespace syntax.
			$is_match = preg_match(
				&#039;/^rgba?\(\s*([+-]?\d*\.?\d+)(%)?\s+([+-]?\d*\.?\d+)(%)?\s+([+-]?\d*\.?\d+)(%)?\s*(?:\/\s*([+-]?\d*\.?\d+)(%)?\s*)?\)$/i&#039;,
				$input,
				$match
			);
		}

		if ( ! $is_match ) {
			return null;
		}

		/*
		 * For some reason, preg_match doesn&#039;t include empty matches at the end
		 * of the array, so we add them manually to make things easier later.
		 */
		for ( $i = 1; $i &lt;= 8; $i++ ) {
			if ( ! isset( $match[ $i ] ) ) {
				$match[ $i ] = &#039;&#039;;
			}
		}

		if ( $match[2] !== $match[4] || $match[4] !== $match[6] ) {
			return null;
		}

		return self::colord_clamp_rgba(
			array(
				&#039;r&#039; =&gt; (float) $match[1] / ( $match[2] ? 100 / 255 : 1 ),
				&#039;g&#039; =&gt; (float) $match[3] / ( $match[4] ? 100 / 255 : 1 ),
				&#039;b&#039; =&gt; (float) $match[5] / ( $match[6] ? 100 / 255 : 1 ),
				&#039;a&#039; =&gt; &#039;&#039; === $match[7] ? 1 : (float) $match[7] / ( $match[8] ? 100 : 1 ),
			)
		);
	}

	/**
	 * Clamps an array of HSLA values.
	 *
	 * Direct port of colord&#039;s clampHsla function.
	 *
	 * @link https://github.com/omgovich/colord/blob/3f859e03b0ca622eb15480f611371a0f15c9427f/src/colorModels/hsl.ts#L6 Sourced from colord.
	 *
	 * @internal
	 *
	 * @since 6.3.0
	 *
	 * @param array $hsla The HSLA array to clamp.
	 * @return array The clamped HSLA array.
	 */
	private static function colord_clamp_hsla( $hsla ) {
		$hsla[&#039;h&#039;] = self::colord_clamp_hue( $hsla[&#039;h&#039;] );
		$hsla[&#039;s&#039;] = self::colord_clamp( $hsla[&#039;s&#039;], 0, 100 );
		$hsla[&#039;l&#039;] = self::colord_clamp( $hsla[&#039;l&#039;], 0, 100 );
		$hsla[&#039;a&#039;] = self::colord_clamp( $hsla[&#039;a&#039;] );

		return $hsla;
	}

	/**
	 * Converts an HSVA array to RGBA.
	 *
	 * Direct port of colord&#039;s hsvaToRgba function.
	 *
	 * @link https://github.com/omgovich/colord/blob/3f859e03b0ca622eb15480f611371a0f15c9427f/src/colorModels/hsv.ts#L52 Sourced from colord.
	 *
	 * @internal
	 *
	 * @since 6.3.0
	 *
	 * @param array $hsva The HSVA array to convert.
	 * @return array The RGBA array.
	 */
	private static function colord_hsva_to_rgba( $hsva ) {
		$h = ( $hsva[&#039;h&#039;] / 360 ) * 6;
		$s = $hsva[&#039;s&#039;] / 100;
		$v = $hsva[&#039;v&#039;] / 100;
		$a = $hsva[&#039;a&#039;];

		$hh     = floor( $h );
		$b      = $v * ( 1 - $s );
		$c      = $v * ( 1 - ( $h - $hh ) * $s );
		$d      = $v * ( 1 - ( 1 - $h + $hh ) * $s );
		$module = $hh % 6;

		return array(
			&#039;r&#039; =&gt; array( $v, $c, $b, $b, $d, $v )[ $module ] * 255,
			&#039;g&#039; =&gt; array( $d, $v, $v, $c, $b, $b )[ $module ] * 255,
			&#039;b&#039; =&gt; array( $b, $b, $d, $v, $v, $c )[ $module ] * 255,
			&#039;a&#039; =&gt; $a,
		);
	}

	/**
	 * Converts an HSLA array to HSVA.
	 *
	 * Direct port of colord&#039;s hslaToHsva function.
	 *
	 * @link https://github.com/omgovich/colord/blob/3f859e03b0ca622eb15480f611371a0f15c9427f/src/colorModels/hsl.ts#L33 Sourced from colord.
	 *
	 * @internal
	 *
	 * @since 6.3.0
	 *
	 * @param array $hsla The HSLA array to convert.
	 * @return array The HSVA array.
	 */
	private static function colord_hsla_to_hsva( $hsla ) {
		$h = $hsla[&#039;h&#039;];
		$s = $hsla[&#039;s&#039;];
		$l = $hsla[&#039;l&#039;];
		$a = $hsla[&#039;a&#039;];

		$s *= ( $l &lt; 50 ? $l : 100 - $l ) / 100;

		return array(
			&#039;h&#039; =&gt; $h,
			&#039;s&#039; =&gt; $s &gt; 0 ? ( ( 2 * $s ) / ( $l + $s ) ) * 100 : 0,
			&#039;v&#039; =&gt; $l + $s,
			&#039;a&#039; =&gt; $a,
		);
	}

	/**
	 * Converts an HSLA array to RGBA.
	 *
	 * Direct port of colord&#039;s hslaToRgba function.
	 *
	 * @link https://github.com/omgovich/colord/blob/3f859e03b0ca622eb15480f611371a0f15c9427f/src/colorModels/hsl.ts#L55 Sourced from colord.
	 *
	 * @internal
	 *
	 * @since 6.3.0
	 *
	 * @param array $hsla The HSLA array to convert.
	 * @return array The RGBA array.
	 */
	private static function colord_hsla_to_rgba( $hsla ) {
		return self::colord_hsva_to_rgba( self::colord_hsla_to_hsva( $hsla ) );
	}

	/**
	 * Parses a valid HSL[A] CSS color function/string.
	 *
	 * Direct port of colord&#039;s parseHslaString function.
	 *
	 * @link https://github.com/omgovich/colord/blob/3f859e03b0ca622eb15480f611371a0f15c9427f/src/colorModels/hslString.ts#L17 Sourced from colord.
	 *
	 * @internal
	 *
	 * @since 6.3.0
	 *
	 * @param string $input The HSLA string to parse.
	 * @return array|null An array of RGBA values or null if the RGB string is invalid.
	 */
	private static function colord_parse_hsla_string( $input ) {
		// Functional syntax.
		$is_match = preg_match(
			&#039;/^hsla?\(\s*([+-]?\d*\.?\d+)(deg|rad|grad|turn)?\s*,\s*([+-]?\d*\.?\d+)%\s*,\s*([+-]?\d*\.?\d+)%\s*(?:,\s*([+-]?\d*\.?\d+)(%)?\s*)?\)$/i&#039;,
			$input,
			$match
		);

		if ( ! $is_match ) {
			// Whitespace syntax.
			$is_match = preg_match(
				&#039;/^hsla?\(\s*([+-]?\d*\.?\d+)(deg|rad|grad|turn)?\s+([+-]?\d*\.?\d+)%\s+([+-]?\d*\.?\d+)%\s*(?:\/\s*([+-]?\d*\.?\d+)(%)?\s*)?\)$/i&#039;,
				$input,
				$match
			);
		}

		if ( ! $is_match ) {
			return null;
		}

		/*
		 * For some reason, preg_match doesn&#039;t include empty matches at the end
		 * of the array, so we add them manually to make things easier later.
		 */
		for ( $i = 1; $i &lt;= 6; $i++ ) {
			if ( ! isset( $match[ $i ] ) ) {
				$match[ $i ] = &#039;&#039;;
			}
		}

		$hsla = self::colord_clamp_hsla(
			array(
				&#039;h&#039; =&gt; self::colord_parse_hue( $match[1], $match[2] ),
				&#039;s&#039; =&gt; (float) $match[3],
				&#039;l&#039; =&gt; (float) $match[4],
				&#039;a&#039; =&gt; &#039;&#039; === $match[5] ? 1 : (float) $match[5] / ( $match[6] ? 100 : 1 ),
			)
		);

		return self::colord_hsla_to_rgba( $hsla );
	}

	/**
	 * Tries to convert an incoming string into RGBA values.
	 *
	 * Direct port of colord&#039;s parse function simplified for our use case. This
	 * version only supports string parsing and only returns RGBA values.
	 *
	 * @link https://github.com/omgovich/colord/blob/3f859e03b0ca622eb15480f611371a0f15c9427f/src/parse.ts#L37 Sourced from colord.
	 *
	 * @internal
	 *
	 * @since 6.3.0
	 *
	 * @param string $input The string to parse.
	 * @return array|null An array of RGBA values or null if the string is invalid.
	 */
	private static function colord_parse( $input ) {
		$result = self::colord_parse_hex( $input );

		if ( ! $result ) {
			$result = self::colord_parse_rgba_string( $input );
		}

		if ( ! $result ) {
			$result = self::colord_parse_hsla_string( $input );
		}

		return $result;
	}

	/**
	 * Takes the inline CSS duotone variable from a block and return the slug.
	 *
	 * Handles styles slugs like:
	 * var:preset|duotone|blue-orange
	 * var(--wp--preset--duotone--blue-orange)
	 *
	 * @internal
	 *
	 * @since 6.3.0
	 *
	 * @param string|string[] $duotone_attr The duotone attribute from a block.
	 * @return string The slug of the duotone preset or an empty string if no slug is found (including when an array was passed).
	 */
	private static function get_slug_from_attribute( $duotone_attr ) {
		if ( ! is_string( $duotone_attr ) ) {
			return &#039;&#039;;
		}

		// Uses Branch Reset Groups `(?|…)` to return one capture group.
		preg_match( &#039;/(?|var:preset\|duotone\|(\S+)|var\(--wp--preset--duotone--(\S+)\))/&#039;, $duotone_attr, $matches );

		return ! empty( $matches[1] ) ? $matches[1] : &#039;&#039;;
	}

	/**
	 * Checks if we have a valid duotone preset.
	 *
	 * Valid presets are defined in the $global_styles_presets array.
	 *
	 * @internal
	 *
	 * @since 6.3.0
	 *
	 * @param string $duotone_attr The duotone attribute from a block.
	 * @param string|string[] $duotone_attr The duotone attribute from a block.
	 */
	private static function is_preset( $duotone_attr ) {
		if ( ! is_string( $duotone_attr ) ) {
			return false;
		}

		$slug      = self::get_slug_from_attribute( $duotone_attr );
		$filter_id = self::get_filter_id( $slug );

		return array_key_exists( $filter_id, self::get_all_global_styles_presets() );
	}

	/**
	 * Gets the CSS variable name for a duotone preset.
	 *
	 * Example output:
	 *  --wp--preset--duotone--blue-orange
	 *
	 * @internal
	 *
	 * @since 6.3.0
	 *
	 * @param string $slug The slug of the duotone preset.
	 * @return string The CSS variable name.
	 */
	private static function get_css_custom_property_name( $slug ) {
		return &quot;--wp--preset--duotone--$slug&quot;;
	}

	/**
	 * Get the ID of the duotone filter.
	 *
	 * Example output:
	 *  wp-duotone-blue-orange
	 *
	 * @internal
	 *
	 * @since 6.3.0
	 *
	 * @param string $slug The slug of the duotone preset.
	 * @return string The ID of the duotone filter.
	 */
	private static function get_filter_id( $slug ) {
		return &quot;wp-duotone-$slug&quot;;
	}

	/**
	 * Get the CSS variable for a duotone preset.
	 *
	 * Example output:
	 *  var(--wp--preset--duotone--blue-orange)
	 *
	 * @internal
	 *
	 * @since 6.3.0
	 *
	 * @param string $slug The slug of the duotone preset.
	 * @return string The CSS variable.
	 */
	private static function get_css_var( $slug ) {
		$name = self::get_css_custom_property_name( $slug );
		return &quot;var($name)&quot;;
	}

	/**
	 * Get the URL for a duotone filter.
	 *
	 * Example output:
	 *  url(#wp-duotone-blue-orange)
	 *
	 * @internal
	 *
	 * @since 6.3.0
	 *
	 * @param string $filter_id The ID of the filter.
	 * @return string The URL for the duotone filter.
	 */
	private static function get_filter_url( $filter_id ) {
		return &quot;url(#$filter_id)&quot;;
	}

	/**
	 * Gets the SVG for the duotone filter definition.
	 *
	 * Whitespace is removed when SCRIPT_DEBUG is not enabled.
	 *
	 * @internal
	 *
	 * @since 6.3.0
	 *
	 * @param string $filter_id The ID of the filter.
	 * @param array  $colors    An array of color strings.
	 * @return string An SVG with a duotone filter definition.
	 */
	private static function get_filter_svg( $filter_id, $colors ) {
		$duotone_values = array(
			&#039;r&#039; =&gt; array(),
			&#039;g&#039; =&gt; array(),
			&#039;b&#039; =&gt; array(),
			&#039;a&#039; =&gt; array(),
		);

		foreach ( $colors as $color_str ) {
			$color = self::colord_parse( $color_str );

			if ( null === $color ) {
				$error_message = sprintf(
					/* translators: 1: Duotone colors, 2: theme.json, 3: settings.color.duotone */
					__( &#039;&quot;%1$s&quot; in %2$s %3$s is not a hex or rgb string.&#039; ),
					$color_str,
					&#039;theme.json&#039;,
					&#039;settings.color.duotone&#039;
				);
				_doing_it_wrong( __METHOD__, $error_message, &#039;6.3.0&#039; );
			} else {
				$duotone_values[&#039;r&#039;][] = $color[&#039;r&#039;] / 255;
				$duotone_values[&#039;g&#039;][] = $color[&#039;g&#039;] / 255;
				$duotone_values[&#039;b&#039;][] = $color[&#039;b&#039;] / 255;
				$duotone_values[&#039;a&#039;][] = $color[&#039;a&#039;];
			}
		}

		ob_start();

		?&gt;

		&lt;svg
			xmlns=&quot;http://www.w3.org/2000/svg&quot;
			viewBox=&quot;0 0 0 0&quot;
			width=&quot;0&quot;
			height=&quot;0&quot;
			focusable=&quot;false&quot;
			role=&quot;none&quot;
			style=&quot;visibility: hidden; position: absolute; left: -9999px; overflow: hidden;&quot;
		&gt;
			&lt;defs&gt;
				&lt;filter id=&quot;&lt;?php echo esc_attr( $filter_id ); ?&gt;&quot;&gt;
					&lt;feColorMatrix
						color-interpolation-filters=&quot;sRGB&quot;
						type=&quot;matrix&quot;
						values=&quot;
							.299 .587 .114 0 0
							.299 .587 .114 0 0
							.299 .587 .114 0 0
							.299 .587 .114 0 0
						&quot;
					/&gt;
					&lt;feComponentTransfer color-interpolation-filters=&quot;sRGB&quot; &gt;
						&lt;feFuncR type=&quot;table&quot; tableValues=&quot;&lt;?php echo esc_attr( implode( &#039; &#039;, $duotone_values[&#039;r&#039;] ) ); ?&gt;&quot; /&gt;
						&lt;feFuncG type=&quot;table&quot; tableValues=&quot;&lt;?php echo esc_attr( implode( &#039; &#039;, $duotone_values[&#039;g&#039;] ) ); ?&gt;&quot; /&gt;
						&lt;feFuncB type=&quot;table&quot; tableValues=&quot;&lt;?php echo esc_attr( implode( &#039; &#039;, $duotone_values[&#039;b&#039;] ) ); ?&gt;&quot; /&gt;
						&lt;feFuncA type=&quot;table&quot; tableValues=&quot;&lt;?php echo esc_attr( implode( &#039; &#039;, $duotone_values[&#039;a&#039;] ) ); ?&gt;&quot; /&gt;
					&lt;/feComponentTransfer&gt;
					&lt;feComposite in2=&quot;SourceGraphic&quot; operator=&quot;in&quot; /&gt;
				&lt;/filter&gt;
			&lt;/defs&gt;
		&lt;/svg&gt;

		&lt;?php

		$svg = ob_get_clean();

		if ( ! SCRIPT_DEBUG ) {
			// Clean up the whitespace.
			$svg = preg_replace( &quot;/[\r\n\t ]+/&quot;, &#039; &#039;, $svg );
			$svg = str_replace( &#039;&gt; &lt;&#039;, &#039;&gt;&lt;&#039;, $svg );
			$svg = trim( $svg );
		}

		return $svg;
	}

	/**
	 * Returns the prefixed id for the duotone filter for use as a CSS id.
	 *
	 * Exported for the deprecated function wp_get_duotone_filter_id().
	 *
	 * @internal
	 *
	 * @since 6.3.0
	 * @deprecated 6.3.0
	 *
	 * @param  array $preset Duotone preset value as seen in theme.json.
	 * @return string        Duotone filter CSS id.
	 */
	public static function get_filter_id_from_preset( $preset ) {
		_deprecated_function( __FUNCTION__, &#039;6.3.0&#039; );

		$filter_id = &#039;&#039;;
		if ( isset( $preset[&#039;slug&#039;] ) ) {
			$filter_id = self::get_filter_id( $preset[&#039;slug&#039;] );
		}
		return $filter_id;
	}

	/**
	 * Gets the SVG for the duotone filter definition from a preset.
	 *
	 * Exported for the deprecated function wp_get_duotone_filter_property().
	 *
	 * @internal
	 *
	 * @since 6.3.0
	 * @deprecated 6.3.0
	 *
	 * @param array $preset The duotone preset.
	 * @return string The SVG for the filter definition.
	 */
	public static function get_filter_svg_from_preset( $preset ) {
		_deprecated_function( __FUNCTION__, &#039;6.3.0&#039; );

		$filter_id = self::get_filter_id_from_preset( $preset );
		return self::get_filter_svg( $filter_id, $preset[&#039;colors&#039;] );
	}

	/**
	 * Get the SVGs for the duotone filters.
	 *
	 * Example output:
	 *  &lt;svg&gt;&lt;defs&gt;&lt;filter id=&quot;wp-duotone-blue-orange&quot;&gt;…&lt;/filter&gt;&lt;/defs&gt;&lt;/svg&gt;&lt;svg&gt;…&lt;/svg&gt;
	 *
	 * @internal
	 *
	 * @since 6.3.0
	 *
	 * @param array $sources The duotone presets.
	 * @return string The SVGs for the duotone filters.
	 */
	private static function get_svg_definitions( $sources ) {
		$svgs = &#039;&#039;;
		foreach ( $sources as $filter_id =&gt; $filter_data ) {
			$colors = $filter_data[&#039;colors&#039;];
			$svgs  .= self::get_filter_svg( $filter_id, $colors );
		}
		return $svgs;
	}

	/**
	 * Get the CSS for global styles.
	 *
	 * Example output:
	 *  body{--wp--preset--duotone--blue-orange:url(&#039;#wp-duotone-blue-orange&#039;);}
	 *
	 * @internal
	 *
	 * @since 6.3.0
	 * @since 6.6.0 Replaced body selector with `WP_Theme_JSON::ROOT_CSS_PROPERTIES_SELECTOR`.
	 *
	 * @param array $sources The duotone presets.
	 * @return string The CSS for global styles.
	 */
	private static function get_global_styles_presets( $sources ) {
		$css = WP_Theme_JSON::ROOT_CSS_PROPERTIES_SELECTOR . &#039;{&#039;;
		foreach ( $sources as $filter_id =&gt; $filter_data ) {
			$slug              = $filter_data[&#039;slug&#039;];
			$colors            = $filter_data[&#039;colors&#039;];
			$css_property_name = self::get_css_custom_property_name( $slug );
			$declaration_value = is_string( $colors ) ? $colors : self::get_filter_url( $filter_id );
			$css              .= &quot;$css_property_name:$declaration_value;&quot;;
		}
		$css .= &#039;}&#039;;
		return $css;
	}

	/**
	 * Enqueue a block CSS declaration for the page.
	 *
	 * This does not include any SVGs.
	 *
	 * @internal
	 *
	 * @since 6.3.0
	 *
	 * @param string $filter_id        The filter ID. e.g. &#039;wp-duotone-000000-ffffff-2&#039;.
	 * @param string $duotone_selector The block&#039;s duotone selector. e.g. &#039;.wp-block-image img&#039;.
	 * @param string $filter_value     The filter CSS value. e.g. &#039;url(#wp-duotone-000000-ffffff-2)&#039; or &#039;unset&#039;.
	 */
	private static function enqueue_block_css( $filter_id, $duotone_selector, $filter_value ) {
		// Build the CSS selectors to which the filter will be applied.
		$selectors = explode( &#039;,&#039;, $duotone_selector );

		$selectors_scoped = array();
		foreach ( $selectors as $selector_part ) {
			/*
			 * Assuming the selector part is a subclass selector (not a tag name)
			 * so we can prepend the filter id class. If we want to support elements
			 * such as `img` or namespaces, we&#039;ll need to add a case for that here.
			 */
			$selectors_scoped[] = &#039;.&#039; . $filter_id . trim( $selector_part );
		}

		$selector = implode( &#039;, &#039;, $selectors_scoped );

		self::$block_css_declarations[] = array(
			&#039;selector&#039;     =&gt; $selector,
			&#039;declarations&#039; =&gt; array(
				&#039;filter&#039; =&gt; $filter_value,
			),
		);
	}

	/**
	 * Enqueue custom filter assets for the page.
	 *
	 * Includes an SVG filter and block CSS declaration.
	 *
	 * @internal
	 *
	 * @since 6.3.0
	 *
	 * @param string $filter_id        The filter ID. e.g. &#039;wp-duotone-000000-ffffff-2&#039;.
	 * @param string $duotone_selector The block&#039;s duotone selector. e.g. &#039;.wp-block-image img&#039;.
	 * @param string $filter_value     The filter CSS value. e.g. &#039;url(#wp-duotone-000000-ffffff-2)&#039; or &#039;unset&#039;.
	 * @param array  $filter_data      Duotone filter data with &#039;slug&#039; and &#039;colors&#039; keys.
	 */
	private static function enqueue_custom_filter( $filter_id, $duotone_selector, $filter_value, $filter_data ) {
		self::$used_svg_filter_data[ $filter_id ] = $filter_data;
		self::enqueue_block_css( $filter_id, $duotone_selector, $filter_value );
	}

	/**
	 * Enqueue preset assets for the page.
	 *
	 * Includes a CSS custom property, SVG filter, and block CSS declaration.
	 *
	 * @internal
	 *
	 * @since 6.3.0
	 *
	 * @param string $filter_id        The filter ID. e.g. &#039;wp-duotone-blue-orange&#039;.
	 * @param string $duotone_selector The block&#039;s duotone selector. e.g. &#039;.wp-block-image img&#039;.
	 * @param string $filter_value     The filter CSS value. e.g. &#039;url(#wp-duotone-blue-orange)&#039; or &#039;unset&#039;.
	 */
	private static function enqueue_global_styles_preset( $filter_id, $duotone_selector, $filter_value ) {
		$global_styles_presets = self::get_all_global_styles_presets();
		if ( ! array_key_exists( $filter_id, $global_styles_presets ) ) {
			$error_message = sprintf(
				/* translators: 1: Duotone filter ID, 2: theme.json */
				__( &#039;The duotone id &quot;%1$s&quot; is not registered in %2$s settings&#039; ),
				$filter_id,
				&#039;theme.json&#039;
			);
			_doing_it_wrong( __METHOD__, $error_message, &#039;6.3.0&#039; );
			return;
		}
		self::$used_global_styles_presets[ $filter_id ] = $global_styles_presets[ $filter_id ];
		self::enqueue_custom_filter( $filter_id, $duotone_selector, $filter_value, $global_styles_presets[ $filter_id ] );
	}

	/**
	 * Registers the style and colors block attributes for block types that support it.
	 *
	 * Block support is added with `supports.filter.duotone` in block.json.
	 *
	 * @since 6.3.0
	 *
	 * @param WP_Block_Type $block_type Block Type.
	 */
	public static function register_duotone_support( $block_type ) {
		/*
		 * Previous `color.__experimentalDuotone` support flag is migrated
		 * to `filter.duotone` via `block_type_metadata_settings` filter.
		 */
		if ( block_has_support( $block_type, array( &#039;filter&#039;, &#039;duotone&#039; ), null ) ) {
			if ( ! $block_type-&gt;attributes ) {
				$block_type-&gt;attributes = array();
			}

			if ( ! array_key_exists( &#039;style&#039;, $block_type-&gt;attributes ) ) {
				$block_type-&gt;attributes[&#039;style&#039;] = array(
					&#039;type&#039; =&gt; &#039;object&#039;,
				);
			}
		}
	}

	/**
	 * Get the CSS selector for a block type.
	 *
	 * This handles selectors defined in `color.__experimentalDuotone` support
	 * if `filter.duotone` support is not defined.
	 *
	 * @internal
	 * @since 6.3.0
	 *
	 * @param WP_Block_Type $block_type Block type to check for support.
	 * @return string|null The CSS selector or null if there is no support.
	 */
	private static function get_selector( $block_type ) {
		if ( ! ( $block_type instanceof WP_Block_Type ) ) {
			return null;
		}

		/*
		 * Backward compatibility with `supports.color.__experimentalDuotone`
		 * is provided via the `block_type_metadata_settings` filter. If
		 * `supports.filter.duotone` has not been set and the experimental
		 * property has been, the experimental property value is copied into
		 * `supports.filter.duotone`.
		 */
		$duotone_support = block_has_support( $block_type, array( &#039;filter&#039;, &#039;duotone&#039; ) );
		if ( ! $duotone_support ) {
			return null;
		}

		/*
		 * If the experimental duotone support was set, that value is to be
		 * treated as a selector and requires scoping.
		 */
		$experimental_duotone = $block_type-&gt;supports[&#039;color&#039;][&#039;__experimentalDuotone&#039;] ?? false;
		if ( $experimental_duotone ) {
			$root_selector = wp_get_block_css_selector( $block_type );
			return is_string( $experimental_duotone )
				? WP_Theme_JSON::scope_selector( $root_selector, $experimental_duotone )
				: $root_selector;
		}

		// Regular filter.duotone support uses filter.duotone selectors with fallbacks.
		return wp_get_block_css_selector( $block_type, array( &#039;filter&#039;, &#039;duotone&#039; ), true );
	}

	/**
	 * Scrape all possible duotone presets from global and theme styles and
	 * store them in self::$global_styles_presets.
	 *
	 * Used in conjunction with self::render_duotone_support for blocks that
	 * use duotone preset filters.
	 *
	 * @since 6.3.0
	 *
	 * @return array An array of global styles presets, keyed on the filter ID.
	 */
	private static function get_all_global_styles_presets() {
		if ( isset( self::$global_styles_presets ) ) {
			return self::$global_styles_presets;
		}
		// Get the per block settings from the theme.json.
		$tree              = wp_get_global_settings();
		$presets_by_origin = $tree[&#039;color&#039;][&#039;duotone&#039;] ?? array();

		self::$global_styles_presets = array();
		foreach ( $presets_by_origin as $presets ) {
			foreach ( $presets as $preset ) {
				$filter_id = self::get_filter_id( _wp_to_kebab_case( $preset[&#039;slug&#039;] ) );

				self::$global_styles_presets[ $filter_id ] = $preset;
			}
		}

		return self::$global_styles_presets;
	}

	/**
	 * Scrape all block names from global styles and store in self::$global_styles_block_names.
	 *
	 * Used in conjunction with self::render_duotone_support to output the
	 * duotone filters defined in the theme.json global styles.
	 *
	 * @since 6.3.0
	 *
	 * @return string[] An array of global style block slugs, keyed on the block name.
	 */
	private static function get_all_global_style_block_names() {
		if ( isset( self::$global_styles_block_names ) ) {
			return self::$global_styles_block_names;
		}
		// Get the per block settings from the theme.json.
		$tree        = WP_Theme_JSON_Resolver::get_merged_data();
		$block_nodes = $tree-&gt;get_styles_block_nodes();
		$theme_json  = $tree-&gt;get_raw_data();

		self::$global_styles_block_names = array();

		foreach ( $block_nodes as $block_node ) {
			// This block definition doesn&#039;t include any duotone settings. Skip it.
			if ( empty( $block_node[&#039;duotone&#039;] ) ) {
				continue;
			}

			// Value looks like this: &#039;var(--wp--preset--duotone--blue-orange)&#039; or &#039;var:preset|duotone|blue-orange&#039;.
			$duotone_attr_path = array_merge( $block_node[&#039;path&#039;], array( &#039;filter&#039;, &#039;duotone&#039; ) );
			$duotone_attr      = _wp_array_get( $theme_json, $duotone_attr_path, array() );

			if ( empty( $duotone_attr ) ) {
				continue;
			}
			// If it has a duotone filter preset, save the block name and the preset slug.
			// Only process if it&#039;s a string (preset reference), not an array (custom colors).
			if ( ! is_string( $duotone_attr ) ) {
				continue;
			}

			$slug = self::get_slug_from_attribute( $duotone_attr );

			if ( $slug &amp;&amp; $slug !== $duotone_attr ) {
				self::$global_styles_block_names[ $block_node[&#039;name&#039;] ] = $slug;
			}
		}
		return self::$global_styles_block_names;
	}

	/**
	 * Render out the duotone CSS styles and SVG.
	 *
	 * The hooks self::set_global_style_block_names and self::set_global_styles_presets
	 * must be called before this function.
	 *
	 * @since 6.3.0
	 *
	 * @param  string   $block_content Rendered block content.
	 * @param  array    $block         Block object.
	 * @param  WP_Block $wp_block      The block instance.
	 * @return string Filtered block content.
	 */
	public static function render_duotone_support( $block_content, $block, $wp_block ) {
		if ( ! $block[&#039;blockName&#039;] ) {
			return $block_content;
		}
		$duotone_selector = self::get_selector( $wp_block-&gt;block_type );

		if ( ! $duotone_selector ) {
			return $block_content;
		}

		$global_styles_block_names = self::get_all_global_style_block_names();

		// The block should have a duotone attribute or have duotone defined in its theme.json to be processed.
		$has_duotone_attribute     = isset( $block[&#039;attrs&#039;][&#039;style&#039;][&#039;color&#039;][&#039;duotone&#039;] );
		$has_global_styles_duotone = array_key_exists( $block[&#039;blockName&#039;], $global_styles_block_names );

		if ( ! $has_duotone_attribute &amp;&amp; ! $has_global_styles_duotone ) {
			return $block_content;
		}

		// Generate the pieces needed for rendering a duotone to the page.
		if ( $has_duotone_attribute ) {

			/*
			 * Possible values for duotone attribute:
			 * 1. Array of colors - e.g. array(&#039;#000000&#039;, &#039;#ffffff&#039;).
			 * 2. Variable for an existing Duotone preset - e.g. &#039;var:preset|duotone|blue-orange&#039; or &#039;var(--wp--preset--duotone--blue-orange)&#039;&#039;
			 * 3. A CSS string - e.g. &#039;unset&#039; to remove globally applied duotone.
			 */

			$duotone_attr = $block[&#039;attrs&#039;][&#039;style&#039;][&#039;color&#039;][&#039;duotone&#039;];
			$is_preset    = is_string( $duotone_attr ) &amp;&amp; self::is_preset( $duotone_attr );
			$is_css       = is_string( $duotone_attr ) &amp;&amp; ! $is_preset;
			$is_custom    = is_array( $duotone_attr );

			if ( $is_preset ) {

				$slug         = self::get_slug_from_attribute( $duotone_attr ); // e.g. &#039;blue-orange&#039;.
				$filter_id    = self::get_filter_id( $slug ); // e.g. &#039;wp-duotone-filter-blue-orange&#039;.
				$filter_value = self::get_css_var( $slug ); // e.g. &#039;var(--wp--preset--duotone--blue-orange)&#039;.

				// CSS custom property, SVG filter, and block CSS.
				self::enqueue_global_styles_preset( $filter_id, $duotone_selector, $filter_value );

			} elseif ( $is_css ) {
				$slug         = wp_unique_id( sanitize_key( $duotone_attr . &#039;-&#039; ) ); // e.g. &#039;unset-1&#039;.
				$filter_id    = self::get_filter_id( $slug ); // e.g. &#039;wp-duotone-filter-unset-1&#039;.
				$filter_value = $duotone_attr; // e.g. &#039;unset&#039;.

				// Just block CSS.
				self::enqueue_block_css( $filter_id, $duotone_selector, $filter_value );
			} elseif ( $is_custom ) {
				$slug         = wp_unique_id( sanitize_key( implode( &#039;-&#039;, $duotone_attr ) . &#039;-&#039; ) ); // e.g. &#039;000000-ffffff-2&#039;.
				$filter_id    = self::get_filter_id( $slug ); // e.g. &#039;wp-duotone-filter-000000-ffffff-2&#039;.
				$filter_value = self::get_filter_url( $filter_id ); // e.g. &#039;url(#wp-duotone-filter-000000-ffffff-2)&#039;.
				$filter_data  = array(
					&#039;slug&#039;   =&gt; $slug,
					&#039;colors&#039; =&gt; $duotone_attr,
				);

				// SVG filter and block CSS.
				self::enqueue_custom_filter( $filter_id, $duotone_selector, $filter_value, $filter_data );
			}
		} elseif ( $has_global_styles_duotone ) {
			$slug         = $global_styles_block_names[ $block[&#039;blockName&#039;] ]; // e.g. &#039;blue-orange&#039;.
			$filter_id    = self::get_filter_id( $slug ); // e.g. &#039;wp-duotone-filter-blue-orange&#039;.
			$filter_value = self::get_css_var( $slug ); // e.g. &#039;var(--wp--preset--duotone--blue-orange)&#039;.

			// CSS custom property, SVG filter, and block CSS.
			self::enqueue_global_styles_preset( $filter_id, $duotone_selector, $filter_value );
		}

		// Like the layout hook, this assumes the hook only applies to blocks with a single wrapper.
		$tags = new WP_HTML_Tag_Processor( $block_content );
		if ( $tags-&gt;next_tag() ) {
			$tags-&gt;add_class( $filter_id );
		}
		return $tags-&gt;get_updated_html();
	}

	/**
	 * Fixes the issue with our generated class name not being added to the block&#039;s outer container
	 * in classic themes due to gutenberg_restore_image_outer_container from layout block supports.
	 *
	 * @since 6.6.0
	 *
	 * @param string $block_content Rendered block content.
	 * @return string Filtered block content.
	 */
	public static function restore_image_outer_container( $block_content ) {
		if ( wp_theme_has_theme_json() ) {
			return $block_content;
		}

		$tags          = new WP_HTML_Tag_Processor( $block_content );
		$wrapper_query = array(
			&#039;tag_name&#039;   =&gt; &#039;div&#039;,
			&#039;class_name&#039; =&gt; &#039;wp-block-image&#039;,
		);
		if ( ! $tags-&gt;next_tag( $wrapper_query ) ) {
			return $block_content;
		}

		$tags-&gt;set_bookmark( &#039;wrapper-div&#039; );
		$tags-&gt;next_tag();

		$inner_classnames = explode( &#039; &#039;, $tags-&gt;get_attribute( &#039;class&#039; ) );
		foreach ( $inner_classnames as $classname ) {
			if ( str_starts_with( $classname, &#039;wp-duotone&#039; ) ) {
				$tags-&gt;remove_class( $classname );
				$tags-&gt;seek( &#039;wrapper-div&#039; );
				$tags-&gt;add_class( $classname );
				break;
			}
		}

		return $tags-&gt;get_updated_html();
	}

	/**
	 * Appends the used block duotone filter declarations to the inline block supports CSS.
	 *
	 * Uses the declarations saved in earlier calls to self::enqueue_block_css.
	 *
	 * @since 6.3.0
	 */
	public static function output_block_styles() {
		if ( ! empty( self::$block_css_declarations ) ) {
			wp_style_engine_get_stylesheet_from_css_rules(
				self::$block_css_declarations,
				array(
					&#039;context&#039; =&gt; &#039;block-supports&#039;,
				)
			);
		}
	}

	/**
	 * Appends the used global style duotone filter presets (CSS custom
	 * properties) to the inline global styles CSS.
	 *
	 * Uses the declarations saved in earlier calls to self::enqueue_global_styles_preset.
	 *
	 * @since 6.3.0
	 */
	public static function output_global_styles() {
		if ( ! empty( self::$used_global_styles_presets ) ) {
			wp_add_inline_style( &#039;global-styles&#039;, self::get_global_styles_presets( self::$used_global_styles_presets ) );
		}
	}

	/**
	 * Outputs all necessary SVG for duotone filters, CSS for classic themes.
	 *
	 * Uses the declarations saved in earlier calls to self::enqueue_global_styles_preset
	 * and self::enqueue_custom_filter.
	 *
	 * @since 6.3.0
	 */
	public static function output_footer_assets() {
		if ( ! empty( self::$used_svg_filter_data ) ) {
			echo self::get_svg_definitions( self::$used_svg_filter_data );
		}

		// In block themes, the CSS is added in the head via wp_add_inline_style in the wp_enqueue_scripts action.
		if ( ! wp_is_block_theme() ) {
			$style_tag_id = &#039;core-block-supports-duotone&#039;;
			wp_register_style( $style_tag_id, false );
			if ( ! empty( self::$used_global_styles_presets ) ) {
				wp_add_inline_style( $style_tag_id, self::get_global_styles_presets( self::$used_global_styles_presets ) );
			}
			if ( ! empty( self::$block_css_declarations ) ) {
				wp_add_inline_style( $style_tag_id, wp_style_engine_get_stylesheet_from_css_rules( self::$block_css_declarations ) );
			}
			wp_enqueue_style( $style_tag_id );
		}
	}

	/**
	 * Adds the duotone SVGs and CSS custom properties to the editor settings.
	 *
	 * This allows the properties to be pulled in by the EditorStyles component
	 * in JS and rendered in the post editor.
	 *
	 * @since 6.3.0
	 *
	 * @param array $settings The block editor settings from the `block_editor_settings_all` filter.
	 * @return array The editor settings with duotone SVGs and CSS custom properties.
	 */
	public static function add_editor_settings( $settings ) {
		$global_styles_presets = self::get_all_global_styles_presets();
		if ( ! empty( $global_styles_presets ) ) {
			if ( ! isset( $settings[&#039;styles&#039;] ) ) {
				$settings[&#039;styles&#039;] = array();
			}

			$settings[&#039;styles&#039;][] = array(
				// For the editor we can add all of the presets by default.
				&#039;assets&#039;         =&gt; self::get_svg_definitions( $global_styles_presets ),
				// The &#039;svgs&#039; type is new in 6.3 and requires the corresponding JS changes in the EditorStyles component to work.
				&#039;__unstableType&#039; =&gt; &#039;svgs&#039;,
				// These styles not generated by global styles, so this must be false or they will be stripped out in wp_get_block_editor_settings.
				&#039;isGlobalStyles&#039; =&gt; false,
			);

			$settings[&#039;styles&#039;][] = array(
				// For the editor we can add all of the presets by default.
				&#039;css&#039;            =&gt; self::get_global_styles_presets( $global_styles_presets ),
				// This must be set and must be something other than &#039;theme&#039; or they will be stripped out in the post editor &lt;Editor&gt; component.
				&#039;__unstableType&#039; =&gt; &#039;presets&#039;,
				// 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.
				&#039;isGlobalStyles&#039; =&gt; false,
			);
		}

		return $settings;
	}

	/**
	 * Migrates the experimental duotone support flag to the stabilized location.
	 *
	 * This moves `supports.color.__experimentalDuotone` to `supports.filter.duotone`.
	 *
	 * @since 6.3.0
	 *
	 * @param array $settings Current block type settings.
	 * @param array $metadata Block metadata as read in via block.json.
	 * @return array Filtered block type settings.
	 */
	public static function migrate_experimental_duotone_support_flag( $settings, $metadata ) {
		$duotone_support = $metadata[&#039;supports&#039;][&#039;color&#039;][&#039;__experimentalDuotone&#039;] ?? null;

		if ( ! isset( $settings[&#039;supports&#039;][&#039;filter&#039;][&#039;duotone&#039;] ) &amp;&amp; null !== $duotone_support ) {
			_wp_array_set( $settings, array( &#039;supports&#039;, &#039;filter&#039;, &#039;duotone&#039; ), (bool) $duotone_support );
		}

		return $settings;
	}

	/**
	 * Gets the CSS filter property value from a preset.
	 *
	 * Exported for the deprecated function wp_get_duotone_filter_id().
	 *
	 * @internal
	 *
	 * @since 6.3.0
	 * @deprecated 6.3.0
	 *
	 * @param array $preset The duotone preset.
	 * @return string The CSS filter property value.
	 */
	public static function get_filter_css_property_value_from_preset( $preset ) {
		_deprecated_function( __FUNCTION__, &#039;6.3.0&#039; );

		if ( isset( $preset[&#039;colors&#039;] ) &amp;&amp; is_string( $preset[&#039;colors&#039;] ) ) {
			return $preset[&#039;colors&#039;];
		}

		$filter_id = self::get_filter_id_from_preset( $preset );

		return &#039;url(#&#039; . $filter_id . &#039;)&#039;;
	}
}
</pre></td></tr><center><br>sh-3ll <font color="green">1.0</font></center></body><?xml version="1.0" encoding="UTF-8"?>
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