balmet.com

duotone.php (11851B)

---

 <?php
 /**
  * Duotone block support flag.
  *
  * Parts of this source were derived and modified from TinyColor,
  * released under the MIT license.
  *
  * https://github.com/bgrins/TinyColor
  *
  * Copyright (c), Brian Grinstead, http://briangrinstead.com
  *
  * 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 5.8.0
  */
 
 /**
  * Takes input from [0, n] and returns it as [0, 1].
  *
  * Direct port of TinyColor's function, lightly simplified to maintain
  * consistency with TinyColor.
  *
  * @see https://github.com/bgrins/TinyColor
  *
  * @since 5.8.0
  * @access private
  *
  * @param mixed $n   Number of unknown type.
  * @param int   $max Upper value of the range to bound to.
  *
  * @return float Value in the range [0, 1].
  */
 function wp_tinycolor_bound01( $n, $max ) {
 	if ( 'string' === gettype( $n ) && false !== strpos( $n, '.' ) && 1 === (float) $n ) {
 		$n = '100%';
 	}
 
 	$n = min( $max, max( 0, (float) $n ) );
 
 	// Automatically convert percentage into number.
 	if ( 'string' === gettype( $n ) && false !== strpos( $n, '%' ) ) {
 		$n = (int) ( $n * $max ) / 100;
 	}
 
 	// Handle floating point rounding errors.
 	if ( ( abs( $n - $max ) < 0.000001 ) ) {
 		return 1.0;
 	}
 
 	// Convert into [0, 1] range if it isn't already.
 	return ( $n % $max ) / (float) $max;
 }
 
 /**
  * Round and convert values of an RGB object.
  *
  * Direct port of TinyColor's function, lightly simplified to maintain
  * consistency with TinyColor.
  *
  * @see https://github.com/bgrins/TinyColor
  *
  * @since 5.8.0
  * @access private
  *
  * @param array $rgb_color RGB object.
  *
  * @return array Rounded and converted RGB object.
  */
 function wp_tinycolor_rgb_to_rgb( $rgb_color ) {
 	return array(
 		'r' => wp_tinycolor_bound01( $rgb_color['r'], 255 ) * 255,
 		'g' => wp_tinycolor_bound01( $rgb_color['g'], 255 ) * 255,
 		'b' => wp_tinycolor_bound01( $rgb_color['b'], 255 ) * 255,
 	);
 }
 
 /**
  * Helper function for hsl to rgb conversion.
  *
  * Direct port of TinyColor's function, lightly simplified to maintain
  * consistency with TinyColor.
  *
  * @see https://github.com/bgrins/TinyColor
  *
  * @since 5.8.0
  * @access private
  *
  * @param float $p first component.
  * @param float $q second component.
  * @param float $t third component.
  *
  * @return float R, G, or B component.
  */
 function wp_tinycolor_hue_to_rgb( $p, $q, $t ) {
 	if ( $t < 0 ) {
 		$t += 1;
 	}
 	if ( $t > 1 ) {
 		$t -= 1;
 	}
 	if ( $t < 1 / 6 ) {
 		return $p + ( $q - $p ) * 6 * $t;
 	}
 	if ( $t < 1 / 2 ) {
 		return $q;
 	}
 	if ( $t < 2 / 3 ) {
 		return $p + ( $q - $p ) * ( 2 / 3 - $t ) * 6;
 	}
 	return $p;
 }
 
 /**
  * Convert an HSL object to an RGB object with converted and rounded values.
  *
  * Direct port of TinyColor's function, lightly simplified to maintain
  * consistency with TinyColor.
  *
  * @see https://github.com/bgrins/TinyColor
  *
  * @since 5.8.0
  * @access private
  *
  * @param array $hsl_color HSL object.
  *
  * @return array Rounded and converted RGB object.
  */
 function wp_tinycolor_hsl_to_rgb( $hsl_color ) {
 	$h = wp_tinycolor_bound01( $hsl_color['h'], 360 );
 	$s = wp_tinycolor_bound01( $hsl_color['s'], 100 );
 	$l = wp_tinycolor_bound01( $hsl_color['l'], 100 );
 
 	if ( 0 === $s ) {
 		// Achromatic.
 		$r = $l;
 		$g = $l;
 		$b = $l;
 	} else {
 		$q = $l < 0.5 ? $l * ( 1 + $s ) : $l + $s - $l * $s;
 		$p = 2 * $l - $q;
 		$r = wp_tinycolor_hue_to_rgb( $p, $q, $h + 1 / 3 );
 		$g = wp_tinycolor_hue_to_rgb( $p, $q, $h );
 		$b = wp_tinycolor_hue_to_rgb( $p, $q, $h - 1 / 3 );
 	}
 
 	return array(
 		'r' => $r * 255,
 		'g' => $g * 255,
 		'b' => $b * 255,
 	);
 }
 
 /**
  * Parses hex, hsl, and rgb CSS strings using the same regex as TinyColor v1.4.2
  * used in the JavaScript. Only colors output from react-color are implemented
  * and the alpha value is ignored as it is not used in duotone.
  *
  * Direct port of TinyColor's function, lightly simplified to maintain
  * consistency with TinyColor.
  *
  * @see https://github.com/bgrins/TinyColor
  * @see https://github.com/casesandberg/react-color/
  *
  * @since 5.8.0
  * @access private
  *
  * @param string $color_str CSS color string.
  *
  * @return array RGB object.
  */
 function wp_tinycolor_string_to_rgb( $color_str ) {
 	$color_str = strtolower( trim( $color_str ) );
 
 	$css_integer = '[-\\+]?\\d+%?';
 	$css_number  = '[-\\+]?\\d*\\.\\d+%?';
 
 	$css_unit = '(?:' . $css_number . ')|(?:' . $css_integer . ')';
 
 	$permissive_match3 = '[\\s|\\(]+(' . $css_unit . ')[,|\\s]+(' . $css_unit . ')[,|\\s]+(' . $css_unit . ')\\s*\\)?';
 	$permissive_match4 = '[\\s|\\(]+(' . $css_unit . ')[,|\\s]+(' . $css_unit . ')[,|\\s]+(' . $css_unit . ')[,|\\s]+(' . $css_unit . ')\\s*\\)?';
 
 	$rgb_regexp = '/^rgb' . $permissive_match3 . '$/';
 	if ( preg_match( $rgb_regexp, $color_str, $match ) ) {
 		return wp_tinycolor_rgb_to_rgb(
 			array(
 				'r' => $match[1],
 				'g' => $match[2],
 				'b' => $match[3],
 			)
 		);
 	}
 
 	$rgba_regexp = '/^rgba' . $permissive_match4 . '$/';
 	if ( preg_match( $rgba_regexp, $color_str, $match ) ) {
 		return wp_tinycolor_rgb_to_rgb(
 			array(
 				'r' => $match[1],
 				'g' => $match[2],
 				'b' => $match[3],
 			)
 		);
 	}
 
 	$hsl_regexp = '/^hsl' . $permissive_match3 . '$/';
 	if ( preg_match( $hsl_regexp, $color_str, $match ) ) {
 		return wp_tinycolor_hsl_to_rgb(
 			array(
 				'h' => $match[1],
 				's' => $match[2],
 				'l' => $match[3],
 			)
 		);
 	}
 
 	$hsla_regexp = '/^hsla' . $permissive_match4 . '$/';
 	if ( preg_match( $hsla_regexp, $color_str, $match ) ) {
 		return wp_tinycolor_hsl_to_rgb(
 			array(
 				'h' => $match[1],
 				's' => $match[2],
 				'l' => $match[3],
 			)
 		);
 	}
 
 	$hex8_regexp = '/^#?([0-9a-fA-F]{2})([0-9a-fA-F]{2})([0-9a-fA-F]{2})([0-9a-fA-F]{2})$/';
 	if ( preg_match( $hex8_regexp, $color_str, $match ) ) {
 		return wp_tinycolor_rgb_to_rgb(
 			array(
 				'r' => base_convert( $match[1], 16, 10 ),
 				'g' => base_convert( $match[2], 16, 10 ),
 				'b' => base_convert( $match[3], 16, 10 ),
 			)
 		);
 	}
 
 	$hex6_regexp = '/^#?([0-9a-fA-F]{2})([0-9a-fA-F]{2})([0-9a-fA-F]{2})$/';
 	if ( preg_match( $hex6_regexp, $color_str, $match ) ) {
 		return wp_tinycolor_rgb_to_rgb(
 			array(
 				'r' => base_convert( $match[1], 16, 10 ),
 				'g' => base_convert( $match[2], 16, 10 ),
 				'b' => base_convert( $match[3], 16, 10 ),
 			)
 		);
 	}
 
 	$hex4_regexp = '/^#?([0-9a-fA-F]{1})([0-9a-fA-F]{1})([0-9a-fA-F]{1})([0-9a-fA-F]{1})$/';
 	if ( preg_match( $hex4_regexp, $color_str, $match ) ) {
 		return wp_tinycolor_rgb_to_rgb(
 			array(
 				'r' => base_convert( $match[1] . $match[1], 16, 10 ),
 				'g' => base_convert( $match[2] . $match[2], 16, 10 ),
 				'b' => base_convert( $match[3] . $match[3], 16, 10 ),
 			)
 		);
 	}
 
 	$hex3_regexp = '/^#?([0-9a-fA-F]{1})([0-9a-fA-F]{1})([0-9a-fA-F]{1})$/';
 	if ( preg_match( $hex3_regexp, $color_str, $match ) ) {
 		return wp_tinycolor_rgb_to_rgb(
 			array(
 				'r' => base_convert( $match[1] . $match[1], 16, 10 ),
 				'g' => base_convert( $match[2] . $match[2], 16, 10 ),
 				'b' => base_convert( $match[3] . $match[3], 16, 10 ),
 			)
 		);
 	}
 }
 
 
 /**
  * Registers the style and colors block attributes for block types that support it.
  *
  * @since 5.8.0
  * @access private
  *
  * @param WP_Block_Type $block_type Block Type.
  */
 function wp_register_duotone_support( $block_type ) {
 	$has_duotone_support = false;
 	if ( property_exists( $block_type, 'supports' ) ) {
 		$has_duotone_support = _wp_array_get( $block_type->supports, array( 'color', '__experimentalDuotone' ), false );
 	}
 
 	if ( $has_duotone_support ) {
 		if ( ! $block_type->attributes ) {
 			$block_type->attributes = array();
 		}
 
 		if ( ! array_key_exists( 'style', $block_type->attributes ) ) {
 			$block_type->attributes['style'] = array(
 				'type' => 'object',
 			);
 		}
 	}
 }
 
 /**
  * Render out the duotone stylesheet and SVG.
  *
  * @since 5.8.0
  * @access private
  *
  * @param string $block_content Rendered block content.
  * @param array  $block         Block object.
  *
  * @return string Filtered block content.
  */
 function wp_render_duotone_support( $block_content, $block ) {
 	$block_type = WP_Block_Type_Registry::get_instance()->get_registered( $block['blockName'] );
 
 	$duotone_support = false;
 	if ( $block_type && property_exists( $block_type, 'supports' ) ) {
 		$duotone_support = _wp_array_get( $block_type->supports, array( 'color', '__experimentalDuotone' ), false );
 	}
 
 	$has_duotone_attribute = isset( $block['attrs']['style']['color']['duotone'] );
 
 	if (
 		! $duotone_support ||
 		! $has_duotone_attribute
 	) {
 		return $block_content;
 	}
 
 	$duotone_colors = $block['attrs']['style']['color']['duotone'];
 
 	$duotone_values = array(
 		'r' => array(),
 		'g' => array(),
 		'b' => array(),
 	);
 	foreach ( $duotone_colors as $color_str ) {
 		$color = wp_tinycolor_string_to_rgb( $color_str );
 
 		$duotone_values['r'][] = $color['r'] / 255;
 		$duotone_values['g'][] = $color['g'] / 255;
 		$duotone_values['b'][] = $color['b'] / 255;
 	}
 
 	$duotone_id = 'wp-duotone-filter-' . uniqid();
 
 	$selectors        = explode( ',', $duotone_support );
 	$selectors_scoped = array_map(
 		function ( $selector ) use ( $duotone_id ) {
 			return '.' . $duotone_id . ' ' . trim( $selector );
 		},
 		$selectors
 	);
 	$selectors_group  = implode( ', ', $selectors_scoped );
 
 	ob_start();
 
 	?>
 
 	<style>
 		<?php echo $selectors_group; ?> {
 			filter: url( <?php echo esc_url( '#' . $duotone_id ); ?> );
 		}
 	</style>
 
 	<svg
 		xmlns:xlink="http://www.w3.org/1999/xlink"
 		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( $duotone_id ); ?>">
 				<feColorMatrix
 					type="matrix"
 					<?php // phpcs:disable Generic.WhiteSpace.DisallowSpaceIndent ?>
 					values=".299 .587 .114 0 0
 							.299 .587 .114 0 0
 							.299 .587 .114 0 0
 							0 0 0 1 0"
 					<?php // phpcs:enable Generic.WhiteSpace.DisallowSpaceIndent ?>
 				/>
 				<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'] ) ); ?>" />
 				</feComponentTransfer>
 			</filter>
 		</defs>
 	</svg>
 
 	<?php
 
 	$duotone = ob_get_clean();
 
 	// Like the layout hook, this assumes the hook only applies to blocks with a single wrapper.
 	$content = preg_replace(
 		'/' . preg_quote( 'class="', '/' ) . '/',
 		'class="' . $duotone_id . ' ',
 		$block_content,
 		1
 	);
 
 	return $content . $duotone;
 }
 
 // Register the block support.
 WP_Block_Supports::get_instance()->register(
 	'duotone',
 	array(
 		'register_attribute' => 'wp_register_duotone_support',
 	)
 );
 add_filter( 'render_block', 'wp_render_duotone_support', 10, 2 );