--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/wp/wp-includes/class-wp-duotone.php Fri Sep 05 18:40:08 2025 +0200
@@ -0,0 +1,1342 @@
+<?php
+/**
+ * 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
+ * "Software"), 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 "AS IS", 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:
+ * [
+ * 'core/featured-image' => 'blue-orange',
+ * …
+ * ]
+ *
+ * @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:
+ * [
+ * 'wp-duotone-blue-orange' => [
+ * 'slug' => 'blue-orange',
+ * 'colors' => [ '#0000ff', '#ffcc00' ],
+ * ],
+ * 'wp-duotone-red-yellow' => [
+ * 'slug' => 'red-yellow',
+ * 'colors' => [ '#cc0000', '#ffff33' ],
+ * ],
+ * …
+ * ]
+ *
+ * @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:
+ * [
+ * 'wp-duotone-blue-orange' => [
+ * 'slug' => 'blue-orange',
+ * 'colors' => [ '#0000ff', '#ffcc00' ],
+ * ],
+ * …
+ * ]
+ *
+ * @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:
+ * [
+ * 'wp-duotone-blue-orange' => [
+ * 'slug' => 'blue-orange',
+ * 'colors' => [ '#0000ff', '#ffcc00' ],
+ * ],
+ * 'wp-duotone-000000-ffffff-2' => [
+ * 'slug' => '000000-ffffff-2',
+ * 'colors' => [ '#000000', '#ffffff' ],
+ * ],
+ * …
+ * ]
+ *
+ * @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:
+ * [
+ * [
+ * 'selector' => '.wp-duotone-000000-ffffff-2.wp-block-image img',
+ * 'declarations' => [
+ * 'filter' => 'url(#wp-duotone-000000-ffffff-2)',
+ * ],
+ * ],
+ * …
+ * ]
+ *
+ * @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'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 > $max ? $max : ( $number > $min ? $number : $min );
+ }
+
+ /**
+ * Processes and clamps a degree (angle) value properly.
+ *
+ * Direct port of colord'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 > 0 ? $degrees : $degrees + 360;
+ }
+
+ /**
+ * Converts a hue value to degrees from 0 to 360 inclusive.
+ *
+ * Direct port of colord'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 = 'deg' ) {
+ $angle_units = array(
+ 'grad' => 360 / 400,
+ 'turn' => 360,
+ 'rad' => 360 / ( M_PI * 2 ),
+ );
+
+ $factor = isset( $angle_units[ $unit ] ) ? $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'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 ) {
+ $is_match = preg_match(
+ '/^#([0-9a-f]{3,8})$/i',
+ $hex,
+ $hex_match
+ );
+
+ if ( ! $is_match ) {
+ return null;
+ }
+
+ $hex = $hex_match[1];
+
+ if ( 4 >= strlen( $hex ) ) {
+ return array(
+ 'r' => (int) base_convert( $hex[0] . $hex[0], 16, 10 ),
+ 'g' => (int) base_convert( $hex[1] . $hex[1], 16, 10 ),
+ 'b' => (int) base_convert( $hex[2] . $hex[2], 16, 10 ),
+ 'a' => 4 === strlen( $hex ) ? round( base_convert( $hex[3] . $hex[3], 16, 10 ) / 255, 2 ) : 1,
+ );
+ }
+
+ if ( 6 === strlen( $hex ) || 8 === strlen( $hex ) ) {
+ return array(
+ 'r' => (int) base_convert( substr( $hex, 0, 2 ), 16, 10 ),
+ 'g' => (int) base_convert( substr( $hex, 2, 2 ), 16, 10 ),
+ 'b' => (int) base_convert( substr( $hex, 4, 2 ), 16, 10 ),
+ 'a' => 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'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['r'] = self::colord_clamp( $rgba['r'], 0, 255 );
+ $rgba['g'] = self::colord_clamp( $rgba['g'], 0, 255 );
+ $rgba['b'] = self::colord_clamp( $rgba['b'], 0, 255 );
+ $rgba['a'] = self::colord_clamp( $rgba['a'] );
+
+ return $rgba;
+ }
+
+ /**
+ * Parses a valid RGB[A] CSS color function/string.
+ *
+ * Direct port of colord'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(
+ '/^rgba?\(\s*([+-]?\d*\.?\d+)(%)?\s*,\s*([+-]?\d*\.?\d+)(%)?\s*,\s*([+-]?\d*\.?\d+)(%)?\s*(?:,\s*([+-]?\d*\.?\d+)(%)?\s*)?\)$/i',
+ $input,
+ $match
+ );
+
+ if ( ! $is_match ) {
+ // Whitespace syntax.
+ $is_match = preg_match(
+ '/^rgba?\(\s*([+-]?\d*\.?\d+)(%)?\s+([+-]?\d*\.?\d+)(%)?\s+([+-]?\d*\.?\d+)(%)?\s*(?:\/\s*([+-]?\d*\.?\d+)(%)?\s*)?\)$/i',
+ $input,
+ $match
+ );
+ }
+
+ if ( ! $is_match ) {
+ return null;
+ }
+
+ /*
+ * For some reason, preg_match doesn't include empty matches at the end
+ * of the array, so we add them manually to make things easier later.
+ */
+ for ( $i = 1; $i <= 8; $i++ ) {
+ if ( ! isset( $match[ $i ] ) ) {
+ $match[ $i ] = '';
+ }
+ }
+
+ if ( $match[2] !== $match[4] || $match[4] !== $match[6] ) {
+ return null;
+ }
+
+ return self::colord_clamp_rgba(
+ array(
+ 'r' => (float) $match[1] / ( $match[2] ? 100 / 255 : 1 ),
+ 'g' => (float) $match[3] / ( $match[4] ? 100 / 255 : 1 ),
+ 'b' => (float) $match[5] / ( $match[6] ? 100 / 255 : 1 ),
+ 'a' => '' === $match[7] ? 1 : (float) $match[7] / ( $match[8] ? 100 : 1 ),
+ )
+ );
+ }
+
+ /**
+ * Clamps an array of HSLA values.
+ *
+ * Direct port of colord'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['h'] = self::colord_clamp_hue( $hsla['h'] );
+ $hsla['s'] = self::colord_clamp( $hsla['s'], 0, 100 );
+ $hsla['l'] = self::colord_clamp( $hsla['l'], 0, 100 );
+ $hsla['a'] = self::colord_clamp( $hsla['a'] );
+
+ return $hsla;
+ }
+
+ /**
+ * Converts an HSVA array to RGBA.
+ *
+ * Direct port of colord'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['h'] / 360 ) * 6;
+ $s = $hsva['s'] / 100;
+ $v = $hsva['v'] / 100;
+ $a = $hsva['a'];
+
+ $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(
+ 'r' => array( $v, $c, $b, $b, $d, $v )[ $module ] * 255,
+ 'g' => array( $d, $v, $v, $c, $b, $b )[ $module ] * 255,
+ 'b' => array( $b, $b, $d, $v, $v, $c )[ $module ] * 255,
+ 'a' => $a,
+ );
+ }
+
+ /**
+ * Converts an HSLA array to HSVA.
+ *
+ * Direct port of colord'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['h'];
+ $s = $hsla['s'];
+ $l = $hsla['l'];
+ $a = $hsla['a'];
+
+ $s *= ( $l < 50 ? $l : 100 - $l ) / 100;
+
+ return array(
+ 'h' => $h,
+ 's' => $s > 0 ? ( ( 2 * $s ) / ( $l + $s ) ) * 100 : 0,
+ 'v' => $l + $s,
+ 'a' => $a,
+ );
+ }
+
+ /**
+ * Converts an HSLA array to RGBA.
+ *
+ * Direct port of colord'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'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(
+ '/^hsla?\(\s*([+-]?\d*\.?\d+)(deg|rad|grad|turn)?\s*,\s*([+-]?\d*\.?\d+)%\s*,\s*([+-]?\d*\.?\d+)%\s*(?:,\s*([+-]?\d*\.?\d+)(%)?\s*)?\)$/i',
+ $input,
+ $match
+ );
+
+ if ( ! $is_match ) {
+ // Whitespace syntax.
+ $is_match = preg_match(
+ '/^hsla?\(\s*([+-]?\d*\.?\d+)(deg|rad|grad|turn)?\s+([+-]?\d*\.?\d+)%\s+([+-]?\d*\.?\d+)%\s*(?:\/\s*([+-]?\d*\.?\d+)(%)?\s*)?\)$/i',
+ $input,
+ $match
+ );
+ }
+
+ if ( ! $is_match ) {
+ return null;
+ }
+
+ /*
+ * For some reason, preg_match doesn't include empty matches at the end
+ * of the array, so we add them manually to make things easier later.
+ */
+ for ( $i = 1; $i <= 6; $i++ ) {
+ if ( ! isset( $match[ $i ] ) ) {
+ $match[ $i ] = '';
+ }
+ }
+
+ $hsla = self::colord_clamp_hsla(
+ array(
+ 'h' => self::colord_parse_hue( $match[1], $match[2] ),
+ 's' => (float) $match[3],
+ 'l' => (float) $match[4],
+ 'a' => '' === $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'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 $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.
+ */
+ private static function get_slug_from_attribute( $duotone_attr ) {
+ // Uses Branch Reset Groups `(?|…)` to return one capture group.
+ preg_match( '/(?|var:preset\|duotone\|(\S+)|var\(--wp--preset--duotone--(\S+)\))/', $duotone_attr, $matches );
+
+ return ! empty( $matches[1] ) ? $matches[1] : '';
+ }
+
+ /**
+ * 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.
+ * @return bool True if the duotone preset present and valid.
+ */
+ private static function is_preset( $duotone_attr ) {
+ $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( $slug ) {
+ return "--wp--preset--duotone--$slug";
+ }
+
+ /**
+ * 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( $slug ) {
+ return "wp-duotone-$slug";
+ }
+
+ /**
+ * 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( $slug );
+ return "var($name)";
+ }
+
+ /**
+ * 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( $filter_id ) {
+ return "url(#$filter_id)";
+ }
+
+ /**
+ * 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(
+ 'r' => array(),
+ 'g' => array(),
+ 'b' => array(),
+ 'a' => array(),
+ );
+
+ foreach ( $colors as $color_str ) {
+ $color = self::colord_parse( $color_str );
+
+ if ( null === $color ) {
+ $error_message = sprintf(
+ /* translators: 1: Duotone colors, 2: theme.json, 3: settings.color.duotone */
+ __( '"%1$s" in %2$s %3$s is not a hex or rgb string.' ),
+ $color_str,
+ 'theme.json',
+ 'settings.color.duotone'
+ );
+ _doing_it_wrong( __METHOD__, $error_message, '6.3.0' );
+ } else {
+ $duotone_values['r'][] = $color['r'] / 255;
+ $duotone_values['g'][] = $color['g'] / 255;
+ $duotone_values['b'][] = $color['b'] / 255;
+ $duotone_values['a'][] = $color['a'];
+ }
+ }
+
+ ob_start();
+
+ ?>
+
+ <svg
+ xmlns="http://www.w3.org/2000/svg"
+ viewBox="0 0 0 0"
+ width="0"
+ height="0"
+ focusable="false"
+ role="none"
+ style="visibility: hidden; position: absolute; left: -9999px; overflow: hidden;"
+ >
+ <defs>
+ <filter id="<?php echo esc_attr( $filter_id ); ?>">
+ <feColorMatrix
+ color-interpolation-filters="sRGB"
+ type="matrix"
+ values="
+ .299 .587 .114 0 0
+ .299 .587 .114 0 0
+ .299 .587 .114 0 0
+ .299 .587 .114 0 0
+ "
+ />
+ <feComponentTransfer color-interpolation-filters="sRGB" >
+ <feFuncR type="table" tableValues="<?php echo esc_attr( implode( ' ', $duotone_values['r'] ) ); ?>" />
+ <feFuncG type="table" tableValues="<?php echo esc_attr( implode( ' ', $duotone_values['g'] ) ); ?>" />
+ <feFuncB type="table" tableValues="<?php echo esc_attr( implode( ' ', $duotone_values['b'] ) ); ?>" />
+ <feFuncA type="table" tableValues="<?php echo esc_attr( implode( ' ', $duotone_values['a'] ) ); ?>" />
+ </feComponentTransfer>
+ <feComposite in2="SourceGraphic" operator="in" />
+ </filter>
+ </defs>
+ </svg>
+
+ <?php
+
+ $svg = ob_get_clean();
+
+ if ( ! SCRIPT_DEBUG ) {
+ // Clean up the whitespace.
+ $svg = preg_replace( "/[\r\n\t ]+/", ' ', $svg );
+ $svg = str_replace( '> <', '><', $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__, '6.3.0' );
+
+ $filter_id = '';
+ if ( isset( $preset['slug'] ) ) {
+ $filter_id = self::get_filter_id( $preset['slug'] );
+ }
+ 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__, '6.3.0' );
+
+ $filter_id = self::get_filter_id_from_preset( $preset );
+ return self::get_filter_svg( $filter_id, $preset['colors'] );
+ }
+
+ /**
+ * Get the SVGs for the duotone filters.
+ *
+ * Example output:
+ * <svg><defs><filter id="wp-duotone-blue-orange">…</filter></defs></svg><svg>…</svg>
+ *
+ * @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 = '';
+ foreach ( $sources as $filter_id => $filter_data ) {
+ $colors = $filter_data['colors'];
+ $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('#wp-duotone-blue-orange');}
+ *
+ * @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 . '{';
+ foreach ( $sources as $filter_id => $filter_data ) {
+ $slug = $filter_data['slug'];
+ $colors = $filter_data['colors'];
+ $css_property_name = self::get_css_custom_property_name( $slug );
+ $declaration_value = is_string( $colors ) ? $colors : self::get_filter_url( $filter_id );
+ $css .= "$css_property_name:$declaration_value;";
+ }
+ $css .= '}';
+ 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. 'wp-duotone-000000-ffffff-2'.
+ * @param string $duotone_selector The block's duotone selector. e.g. '.wp-block-image img'.
+ * @param string $filter_value The filter CSS value. e.g. 'url(#wp-duotone-000000-ffffff-2)' or 'unset'.
+ */
+ 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( ',', $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'll need to add a case for that here.
+ */
+ $selectors_scoped[] = '.' . $filter_id . trim( $selector_part );
+ }
+
+ $selector = implode( ', ', $selectors_scoped );
+
+ self::$block_css_declarations[] = array(
+ 'selector' => $selector,
+ 'declarations' => array(
+ 'filter' => $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. 'wp-duotone-000000-ffffff-2'.
+ * @param string $duotone_selector The block's duotone selector. e.g. '.wp-block-image img'.
+ * @param string $filter_value The filter CSS value. e.g. 'url(#wp-duotone-000000-ffffff-2)' or 'unset'.
+ * @param array $filter_data Duotone filter data with 'slug' and 'colors' 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. 'wp-duotone-blue-orange'.
+ * @param string $duotone_selector The block's duotone selector. e.g. '.wp-block-image img'.
+ * @param string $filter_value The filter CSS value. e.g. 'url(#wp-duotone-blue-orange)' or 'unset'.
+ */
+ 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 ) ) {
+ $error_message = sprintf(
+ /* translators: 1: Duotone filter ID, 2: theme.json */
+ __( 'The duotone id "%1$s" is not registered in %2$s settings' ),
+ $filter_id,
+ 'theme.json'
+ );
+ _doing_it_wrong( __METHOD__, $error_message, '6.3.0' );
+ return;
+ }
+ self::$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( 'filter', 'duotone' ), null ) ) {
+ if ( ! $block_type->attributes ) {
+ $block_type->attributes = array();
+ }
+
+ if ( ! array_key_exists( 'style', $block_type->attributes ) ) {
+ $block_type->attributes['style'] = array(
+ 'type' => 'object',
+ );
+ }
+ }
+ }
+
+ /**
+ * 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( 'filter', 'duotone' ) );
+ 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 = isset( $block_type->supports['color']['__experimentalDuotone'] )
+ ? $block_type->supports['color']['__experimentalDuotone']
+ : 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( $block_type, array( 'filter', 'duotone' ), true );
+ }
+
+ /**
+ * Scrape all possible duotone presets from global and theme styles and
+ * store them in self::$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 = isset( $tree['color']['duotone'] ) ? $tree['color']['duotone'] : array();
+
+ self::$global_styles_presets = array();
+ foreach ( $presets_by_origin as $presets ) {
+ foreach ( $presets as $preset ) {
+ $filter_id = self::get_filter_id( _wp_to_kebab_case( $preset['slug'] ) );
+
+ self::$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->get_styles_block_nodes();
+ $theme_json = $tree->get_raw_data();
+
+ self::$global_styles_block_names = array();
+
+ foreach ( $block_nodes as $block_node ) {
+ // This block definition doesn't include any duotone settings. Skip it.
+ if ( empty( $block_node['duotone'] ) ) {
+ continue;
+ }
+
+ // Value looks like this: 'var(--wp--preset--duotone--blue-orange)' or 'var:preset|duotone|blue-orange'.
+ $duotone_attr_path = array_merge( $block_node['path'], array( 'filter', 'duotone' ) );
+ $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.
+ $slug = self::get_slug_from_attribute( $duotone_attr );
+
+ if ( $slug && $slug !== $duotone_attr ) {
+ self::$global_styles_block_names[ $block_node['name'] ] = $slug;
+ }
+ }
+ return self::$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['blockName'] ) {
+ return $block_content;
+ }
+ $duotone_selector = self::get_selector( $wp_block->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['attrs']['style']['color']['duotone'] );
+ $has_global_styles_duotone = array_key_exists( $block['blockName'], $global_styles_block_names );
+
+ if ( ! $has_duotone_attribute && ! $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('#000000', '#ffffff').
+ * 2. Variable for an existing Duotone preset - e.g. 'var:preset|duotone|blue-orange' or 'var(--wp--preset--duotone--blue-orange)''
+ * 3. A CSS string - e.g. 'unset' to remove globally applied duotone.
+ */
+
+ $duotone_attr = $block['attrs']['style']['color']['duotone'];
+ $is_preset = is_string( $duotone_attr ) && self::is_preset( $duotone_attr );
+ $is_css = is_string( $duotone_attr ) && ! $is_preset;
+ $is_custom = is_array( $duotone_attr );
+
+ if ( $is_preset ) {
+
+ $slug = self::get_slug_from_attribute( $duotone_attr ); // e.g. 'blue-orange'.
+ $filter_id = self::get_filter_id( $slug ); // e.g. 'wp-duotone-filter-blue-orange'.
+ $filter_value = self::get_css_var( $slug ); // e.g. 'var(--wp--preset--duotone--blue-orange)'.
+
+ // 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 . '-' ) ); // e.g. 'unset-1'.
+ $filter_id = self::get_filter_id( $slug ); // e.g. 'wp-duotone-filter-unset-1'.
+ $filter_value = $duotone_attr; // e.g. 'unset'.
+
+ // Just block CSS.
+ self::enqueue_block_css( $filter_id, $duotone_selector, $filter_value );
+ } elseif ( $is_custom ) {
+ $slug = wp_unique_id( sanitize_key( implode( '-', $duotone_attr ) . '-' ) ); // e.g. '000000-ffffff-2'.
+ $filter_id = self::get_filter_id( $slug ); // e.g. 'wp-duotone-filter-000000-ffffff-2'.
+ $filter_value = self::get_filter_url( $filter_id ); // e.g. 'url(#wp-duotone-filter-000000-ffffff-2)'.
+ $filter_data = array(
+ 'slug' => $slug,
+ 'colors' => $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['blockName'] ]; // e.g. 'blue-orange'.
+ $filter_id = self::get_filter_id( $slug ); // e.g. 'wp-duotone-filter-blue-orange'.
+ $filter_value = self::get_css_var( $slug ); // e.g. 'var(--wp--preset--duotone--blue-orange)'.
+
+ // 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->next_tag() ) {
+ $tags->add_class( $filter_id );
+ }
+ return $tags->get_updated_html();
+ }
+
+ /**
+ * Fixes the issue with our generated class name not being added to the block'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(
+ 'tag_name' => 'div',
+ 'class_name' => 'wp-block-image',
+ );
+ if ( ! $tags->next_tag( $wrapper_query ) ) {
+ return $block_content;
+ }
+
+ $tags->set_bookmark( 'wrapper-div' );
+ $tags->next_tag();
+
+ $inner_classnames = explode( ' ', $tags->get_attribute( 'class' ) );
+ foreach ( $inner_classnames as $classname ) {
+ if ( 0 === strpos( $classname, 'wp-duotone' ) ) {
+ $tags->remove_class( $classname );
+ $tags->seek( 'wrapper-div' );
+ $tags->add_class( $classname );
+ break;
+ }
+ }
+
+ return $tags->get_updated_html();
+ }
+
+ /**
+ * Appends the used block duotone filter declarations to the inline block supports CSS.
+ *
+ * Uses the declarations saved in earlier calls to self::enqueue_block_css.
+ *
+ * @since 6.3.0
+ */
+ public static function output_block_styles() {
+ if ( ! empty( self::$block_css_declarations ) ) {
+ wp_style_engine_get_stylesheet_from_css_rules(
+ self::$block_css_declarations,
+ array(
+ 'context' => 'block-supports',
+ )
+ );
+ }
+ }
+
+ /**
+ * Appends the used global style duotone filter presets (CSS custom
+ * properties) to the inline global styles CSS.
+ *
+ * Uses the declarations saved in earlier calls to self::enqueue_global_styles_preset.
+ *
+ * @since 6.3.0
+ */
+ public static function output_global_styles() {
+ if ( ! empty( self::$used_global_styles_presets ) ) {
+ wp_add_inline_style( 'global-styles', 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 = 'core-block-supports-duotone';
+ 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['styles'] ) ) {
+ $settings['styles'] = array();
+ }
+
+ $settings['styles'][] = array(
+ // For the editor we can add all of the presets by default.
+ 'assets' => self::get_svg_definitions( $global_styles_presets ),
+ // The 'svgs' type is new in 6.3 and requires the corresponding JS changes in the EditorStyles component to work.
+ '__unstableType' => 'svgs',
+ // These styles not generated by global styles, so this must be false or they will be stripped out in wp_get_block_editor_settings.
+ 'isGlobalStyles' => false,
+ );
+
+ $settings['styles'][] = array(
+ // For the editor we can add all of the presets by default.
+ 'css' => self::get_global_styles_presets( $global_styles_presets ),
+ // This must be set and must be something other than 'theme' or they will be stripped out in the post editor <Editor> component.
+ '__unstableType' => 'presets',
+ // 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.
+ 'isGlobalStyles' => 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 = isset( $metadata['supports']['color']['__experimentalDuotone'] )
+ ? $metadata['supports']['color']['__experimentalDuotone']
+ : null;
+
+ if ( ! isset( $settings['supports']['filter']['duotone'] ) && null !== $duotone_support ) {
+ _wp_array_set( $settings, array( 'supports', 'filter', 'duotone' ), (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__, '6.3.0' );
+
+ if ( isset( $preset['colors'] ) && is_string( $preset['colors'] ) ) {
+ return $preset['colors'];
+ }
+
+ $filter_id = self::get_filter_id_from_preset( $preset );
+
+ return 'url(#' . $filter_id . ')';
+ }
+}