433 lines
12 KiB
PHP
433 lines
12 KiB
PHP
<?php
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/**
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* Duotone block support flag.
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*
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* Parts of this source were derived and modified from TinyColor,
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* released under the MIT license.
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*
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* https://github.com/bgrins/TinyColor
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*
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* Copyright (c), Brian Grinstead, http://briangrinstead.com
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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* @package WordPress
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* @since 5.8.0
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*/
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/**
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* Takes input from [0, n] and returns it as [0, 1].
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*
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* Direct port of TinyColor's function, lightly simplified to maintain
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* consistency with TinyColor.
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*
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* @see https://github.com/bgrins/TinyColor
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*
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* @since 5.8.0
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* @access private
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*
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* @param mixed $n Number of unknown type.
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* @param int $max Upper value of the range to bound to.
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*
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* @return float Value in the range [0, 1].
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*/
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function wp_tinycolor_bound01( $n, $max ) {
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if ( 'string' === gettype( $n ) && false !== strpos( $n, '.' ) && 1 === (float) $n ) {
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$n = '100%';
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}
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$n = min( $max, max( 0, (float) $n ) );
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// Automatically convert percentage into number.
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if ( 'string' === gettype( $n ) && false !== strpos( $n, '%' ) ) {
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$n = (int) ( $n * $max ) / 100;
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}
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// Handle floating point rounding errors.
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if ( ( abs( $n - $max ) < 0.000001 ) ) {
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return 1.0;
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}
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// Convert into [0, 1] range if it isn't already.
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return ( $n % $max ) / (float) $max;
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}
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/**
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* Round and convert values of an RGB object.
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*
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* Direct port of TinyColor's function, lightly simplified to maintain
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* consistency with TinyColor.
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*
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* @see https://github.com/bgrins/TinyColor
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*
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* @since 5.8.0
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* @access private
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*
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* @param array $rgb_color RGB object.
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*
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* @return array Rounded and converted RGB object.
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*/
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function wp_tinycolor_rgb_to_rgb( $rgb_color ) {
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return array(
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'r' => wp_tinycolor_bound01( $rgb_color['r'], 255 ) * 255,
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'g' => wp_tinycolor_bound01( $rgb_color['g'], 255 ) * 255,
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'b' => wp_tinycolor_bound01( $rgb_color['b'], 255 ) * 255,
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);
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}
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/**
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* Helper function for hsl to rgb conversion.
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*
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* Direct port of TinyColor's function, lightly simplified to maintain
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* consistency with TinyColor.
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*
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* @see https://github.com/bgrins/TinyColor
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*
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* @since 5.8.0
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* @access private
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*
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* @param float $p first component.
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* @param float $q second component.
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* @param float $t third component.
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*
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* @return float R, G, or B component.
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*/
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function wp_tinycolor_hue_to_rgb( $p, $q, $t ) {
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if ( $t < 0 ) {
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$t += 1;
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}
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if ( $t > 1 ) {
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$t -= 1;
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}
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if ( $t < 1 / 6 ) {
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return $p + ( $q - $p ) * 6 * $t;
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}
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if ( $t < 1 / 2 ) {
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return $q;
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}
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if ( $t < 2 / 3 ) {
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return $p + ( $q - $p ) * ( 2 / 3 - $t ) * 6;
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}
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return $p;
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}
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/**
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* Convert an HSL object to an RGB object with converted and rounded values.
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*
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* Direct port of TinyColor's function, lightly simplified to maintain
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* consistency with TinyColor.
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*
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* @see https://github.com/bgrins/TinyColor
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*
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* @since 5.8.0
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* @access private
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*
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* @param array $hsl_color HSL object.
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*
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* @return array Rounded and converted RGB object.
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*/
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function wp_tinycolor_hsl_to_rgb( $hsl_color ) {
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$h = wp_tinycolor_bound01( $hsl_color['h'], 360 );
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$s = wp_tinycolor_bound01( $hsl_color['s'], 100 );
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$l = wp_tinycolor_bound01( $hsl_color['l'], 100 );
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if ( 0 === $s ) {
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// Achromatic.
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$r = $l;
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$g = $l;
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$b = $l;
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} else {
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$q = $l < 0.5 ? $l * ( 1 + $s ) : $l + $s - $l * $s;
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$p = 2 * $l - $q;
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$r = wp_tinycolor_hue_to_rgb( $p, $q, $h + 1 / 3 );
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$g = wp_tinycolor_hue_to_rgb( $p, $q, $h );
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$b = wp_tinycolor_hue_to_rgb( $p, $q, $h - 1 / 3 );
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}
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return array(
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'r' => $r * 255,
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'g' => $g * 255,
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'b' => $b * 255,
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);
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}
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/**
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* Parses hex, hsl, and rgb CSS strings using the same regex as TinyColor v1.4.2
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* used in the JavaScript. Only colors output from react-color are implemented
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* and the alpha value is ignored as it is not used in duotone.
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*
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* Direct port of TinyColor's function, lightly simplified to maintain
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* consistency with TinyColor.
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*
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* @see https://github.com/bgrins/TinyColor
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* @see https://github.com/casesandberg/react-color/
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*
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* @since 5.8.0
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* @access private
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*
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* @param string $color_str CSS color string.
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*
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* @return array RGB object.
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*/
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function wp_tinycolor_string_to_rgb( $color_str ) {
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$color_str = strtolower( trim( $color_str ) );
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$css_integer = '[-\\+]?\\d+%?';
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$css_number = '[-\\+]?\\d*\\.\\d+%?';
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$css_unit = '(?:' . $css_number . ')|(?:' . $css_integer . ')';
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$permissive_match3 = '[\\s|\\(]+(' . $css_unit . ')[,|\\s]+(' . $css_unit . ')[,|\\s]+(' . $css_unit . ')\\s*\\)?';
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$permissive_match4 = '[\\s|\\(]+(' . $css_unit . ')[,|\\s]+(' . $css_unit . ')[,|\\s]+(' . $css_unit . ')[,|\\s]+(' . $css_unit . ')\\s*\\)?';
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$rgb_regexp = '/^rgb' . $permissive_match3 . '$/';
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if ( preg_match( $rgb_regexp, $color_str, $match ) ) {
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return wp_tinycolor_rgb_to_rgb(
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array(
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'r' => $match[1],
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'g' => $match[2],
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'b' => $match[3],
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)
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);
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}
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$rgba_regexp = '/^rgba' . $permissive_match4 . '$/';
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if ( preg_match( $rgba_regexp, $color_str, $match ) ) {
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return wp_tinycolor_rgb_to_rgb(
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array(
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'r' => $match[1],
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'g' => $match[2],
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'b' => $match[3],
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)
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);
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}
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$hsl_regexp = '/^hsl' . $permissive_match3 . '$/';
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if ( preg_match( $hsl_regexp, $color_str, $match ) ) {
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return wp_tinycolor_hsl_to_rgb(
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array(
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'h' => $match[1],
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's' => $match[2],
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'l' => $match[3],
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)
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);
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}
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$hsla_regexp = '/^hsla' . $permissive_match4 . '$/';
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if ( preg_match( $hsla_regexp, $color_str, $match ) ) {
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return wp_tinycolor_hsl_to_rgb(
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array(
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'h' => $match[1],
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's' => $match[2],
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'l' => $match[3],
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)
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);
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}
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$hex8_regexp = '/^#?([0-9a-fA-F]{2})([0-9a-fA-F]{2})([0-9a-fA-F]{2})([0-9a-fA-F]{2})$/';
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if ( preg_match( $hex8_regexp, $color_str, $match ) ) {
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return wp_tinycolor_rgb_to_rgb(
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array(
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'r' => base_convert( $match[1], 16, 10 ),
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'g' => base_convert( $match[2], 16, 10 ),
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'b' => base_convert( $match[3], 16, 10 ),
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)
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);
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}
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$hex6_regexp = '/^#?([0-9a-fA-F]{2})([0-9a-fA-F]{2})([0-9a-fA-F]{2})$/';
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if ( preg_match( $hex6_regexp, $color_str, $match ) ) {
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return wp_tinycolor_rgb_to_rgb(
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array(
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'r' => base_convert( $match[1], 16, 10 ),
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'g' => base_convert( $match[2], 16, 10 ),
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'b' => base_convert( $match[3], 16, 10 ),
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)
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);
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}
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$hex4_regexp = '/^#?([0-9a-fA-F]{1})([0-9a-fA-F]{1})([0-9a-fA-F]{1})([0-9a-fA-F]{1})$/';
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if ( preg_match( $hex4_regexp, $color_str, $match ) ) {
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return wp_tinycolor_rgb_to_rgb(
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array(
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'r' => base_convert( $match[1] . $match[1], 16, 10 ),
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'g' => base_convert( $match[2] . $match[2], 16, 10 ),
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'b' => base_convert( $match[3] . $match[3], 16, 10 ),
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)
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);
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}
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$hex3_regexp = '/^#?([0-9a-fA-F]{1})([0-9a-fA-F]{1})([0-9a-fA-F]{1})$/';
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if ( preg_match( $hex3_regexp, $color_str, $match ) ) {
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return wp_tinycolor_rgb_to_rgb(
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array(
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'r' => base_convert( $match[1] . $match[1], 16, 10 ),
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'g' => base_convert( $match[2] . $match[2], 16, 10 ),
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'b' => base_convert( $match[3] . $match[3], 16, 10 ),
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)
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);
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}
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}
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/**
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* Registers the style and colors block attributes for block types that support it.
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*
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* @since 5.8.0
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* @access private
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*
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* @param WP_Block_Type $block_type Block Type.
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*/
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function wp_register_duotone_support( $block_type ) {
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$has_duotone_support = false;
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if ( property_exists( $block_type, 'supports' ) ) {
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$has_duotone_support = _wp_array_get( $block_type->supports, array( 'color', '__experimentalDuotone' ), false );
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}
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if ( $has_duotone_support ) {
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if ( ! $block_type->attributes ) {
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$block_type->attributes = array();
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}
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if ( ! array_key_exists( 'style', $block_type->attributes ) ) {
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$block_type->attributes['style'] = array(
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'type' => 'object',
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);
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}
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}
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}
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/**
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* Render out the duotone stylesheet and SVG.
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*
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* @since 5.8.0
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* @access private
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*
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* @param string $block_content Rendered block content.
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* @param array $block Block object.
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*
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* @return string Filtered block content.
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*/
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function wp_render_duotone_support( $block_content, $block ) {
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$block_type = WP_Block_Type_Registry::get_instance()->get_registered( $block['blockName'] );
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$duotone_support = false;
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if ( $block_type && property_exists( $block_type, 'supports' ) ) {
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$duotone_support = _wp_array_get( $block_type->supports, array( 'color', '__experimentalDuotone' ), false );
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}
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$has_duotone_attribute = isset( $block['attrs']['style']['color']['duotone'] );
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if (
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! $duotone_support ||
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! $has_duotone_attribute
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) {
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return $block_content;
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}
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$duotone_colors = $block['attrs']['style']['color']['duotone'];
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$duotone_values = array(
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'r' => array(),
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'g' => array(),
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'b' => array(),
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);
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foreach ( $duotone_colors as $color_str ) {
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$color = wp_tinycolor_string_to_rgb( $color_str );
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$duotone_values['r'][] = $color['r'] / 255;
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$duotone_values['g'][] = $color['g'] / 255;
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$duotone_values['b'][] = $color['b'] / 255;
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}
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$duotone_id = 'wp-duotone-filter-' . uniqid();
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$selectors = explode( ',', $duotone_support );
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$selectors_scoped = array_map(
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function ( $selector ) use ( $duotone_id ) {
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return '.' . $duotone_id . ' ' . trim( $selector );
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},
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$selectors
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);
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$selectors_group = implode( ', ', $selectors_scoped );
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ob_start();
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?>
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<style>
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<?php echo $selectors_group; ?> {
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filter: url( <?php echo esc_url( '#' . $duotone_id ); ?> );
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}
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</style>
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<svg
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xmlns:xlink="http://www.w3.org/1999/xlink"
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viewBox="0 0 0 0"
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width="0"
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height="0"
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focusable="false"
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role="none"
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style="visibility: hidden; position: absolute; left: -9999px; overflow: hidden;"
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>
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<defs>
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<filter id="<?php echo esc_attr( $duotone_id ); ?>">
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<feColorMatrix
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type="matrix"
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<?php // phpcs:disable Generic.WhiteSpace.DisallowSpaceIndent ?>
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values=".299 .587 .114 0 0
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.299 .587 .114 0 0
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.299 .587 .114 0 0
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0 0 0 1 0"
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<?php // phpcs:enable Generic.WhiteSpace.DisallowSpaceIndent ?>
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/>
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<feComponentTransfer color-interpolation-filters="sRGB" >
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<feFuncR type="table" tableValues="<?php echo esc_attr( implode( ' ', $duotone_values['r'] ) ); ?>" />
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<feFuncG type="table" tableValues="<?php echo esc_attr( implode( ' ', $duotone_values['g'] ) ); ?>" />
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<feFuncB type="table" tableValues="<?php echo esc_attr( implode( ' ', $duotone_values['b'] ) ); ?>" />
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</feComponentTransfer>
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</filter>
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</defs>
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</svg>
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<?php
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$duotone = ob_get_clean();
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// Like the layout hook, this assumes the hook only applies to blocks with a single wrapper.
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$content = preg_replace(
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'/' . preg_quote( 'class="', '/' ) . '/',
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'class="' . $duotone_id . ' ',
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$block_content,
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1
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);
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return $content . $duotone;
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}
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// Register the block support.
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WP_Block_Supports::get_instance()->register(
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'duotone',
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array(
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'register_attribute' => 'wp_register_duotone_support',
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)
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);
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add_filter( 'render_block', 'wp_render_duotone_support', 10, 2 );
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