| 1 |
<?php |
| 2 |
/** |
| 3 |
* Duotone block support flag. |
| 4 |
* |
| 5 |
* @package gutenberg |
| 6 |
*/ |
| 7 |
|
| 8 |
/** |
| 9 |
* Direct port of tinycolor's bound01 function, lightly simplified to maintain |
| 10 |
* consistency with tinycolor. |
| 11 |
* |
| 12 |
* @see https://github.com/bgrins/TinyColor |
| 13 |
* |
| 14 |
* @param mixed $n Number of unknown type. |
| 15 |
* @param int $max Upper value of the range to bound to. |
| 16 |
* @return float Value in the range [0,1]. |
| 17 |
*/ |
| 18 |
function gutenberg_tinycolor_bound01( $n, $max ) { |
| 19 |
if ( 'string' === gettype( $n ) && false !== strpos( $n, '.' ) && 1 === (float) $n ) { |
| 20 |
$n = '100%'; |
| 21 |
} |
| 22 |
|
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$n = min( $max, max( 0, (float) $n ) ); |
| 24 |
|
| 25 |
// Automatically convert percentage into number. |
| 26 |
if ( 'string' === gettype( $n ) && false !== strpos( $n, '%' ) ) { |
| 27 |
$n = (int) ( $n * $max ) / 100; |
| 28 |
} |
| 29 |
|
| 30 |
// Handle floating point rounding errors. |
| 31 |
if ( ( abs( $n - $max ) < 0.000001 ) ) { |
| 32 |
return 1.0; |
| 33 |
} |
| 34 |
|
| 35 |
// Convert into [0, 1] range if it isn't already. |
| 36 |
return ( $n % $max ) / (float) $max; |
| 37 |
} |
| 38 |
|
| 39 |
/** |
| 40 |
* Direct port of tinycolor's boundAlpha function to maintain consistency with |
| 41 |
* how tinycolor works. |
| 42 |
* |
| 43 |
* @see https://github.com/bgrins/TinyColor |
| 44 |
* |
| 45 |
* @param mixed $n Number of unknown type. |
| 46 |
* @return float Value in the range [0,1]. |
| 47 |
*/ |
| 48 |
function gutenberg_tinycolor_bound_alpha( $n ) { |
| 49 |
if ( is_numeric( $n ) ) { |
| 50 |
$n = (float) $n; |
| 51 |
if ( $n >= 0 && $n <= 1 ) { |
| 52 |
return $n; |
| 53 |
} |
| 54 |
} |
| 55 |
return 1; |
| 56 |
} |
| 57 |
|
| 58 |
/** |
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* Round and convert values of an RGB object. |
| 60 |
* |
| 61 |
* @see https://github.com/bgrins/TinyColor |
| 62 |
* |
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* @param array $rgb_color RGB object. |
| 64 |
* @return array Rounded and converted RGB object. |
| 65 |
*/ |
| 66 |
function gutenberg_tinycolor_rgb_to_rgb( $rgb_color ) { |
| 67 |
return array( |
| 68 |
'r' => gutenberg_tinycolor_bound01( $rgb_color['r'], 255 ) * 255, |
| 69 |
'g' => gutenberg_tinycolor_bound01( $rgb_color['g'], 255 ) * 255, |
| 70 |
'b' => gutenberg_tinycolor_bound01( $rgb_color['b'], 255 ) * 255, |
| 71 |
); |
| 72 |
} |
| 73 |
|
| 74 |
/** |
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* Helper function for hsl to rgb conversion. |
| 76 |
* |
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* @see https://github.com/bgrins/TinyColor |
| 78 |
* |
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* @param float $p first component. |
| 80 |
* @param float $q second component. |
| 81 |
* @param float $t third component. |
| 82 |
* @return float R, G, or B component. |
| 83 |
*/ |
| 84 |
function gutenberg_tinycolor_hue_to_rgb( $p, $q, $t ) { |
| 85 |
if ( $t < 0 ) { |
| 86 |
$t += 1; |
| 87 |
} |
| 88 |
if ( $t > 1 ) { |
| 89 |
$t -= 1; |
| 90 |
} |
| 91 |
if ( $t < 1 / 6 ) { |
| 92 |
return $p + ( $q - $p ) * 6 * $t; |
| 93 |
} |
| 94 |
if ( $t < 1 / 2 ) { |
| 95 |
return $q; |
| 96 |
} |
| 97 |
if ( $t < 2 / 3 ) { |
| 98 |
return $p + ( $q - $p ) * ( 2 / 3 - $t ) * 6; |
| 99 |
} |
| 100 |
return $p; |
| 101 |
} |
| 102 |
|
| 103 |
/** |
| 104 |
* Convert an HSL object to an RGB object with converted and rounded values. |
| 105 |
* |
| 106 |
* @see https://github.com/bgrins/TinyColor |
| 107 |
* |
| 108 |
* @param array $hsl_color HSL object. |
| 109 |
* @return array Rounded and converted RGB object. |
| 110 |
*/ |
| 111 |
function gutenberg_tinycolor_hsl_to_rgb( $hsl_color ) { |
| 112 |
$h = gutenberg_tinycolor_bound01( $hsl_color['h'], 360 ); |
| 113 |
$s = gutenberg_tinycolor_bound01( $hsl_color['s'], 100 ); |
| 114 |
$l = gutenberg_tinycolor_bound01( $hsl_color['l'], 100 ); |
| 115 |
|
| 116 |
if ( 0 === $s ) { |
| 117 |
// Achromatic. |
| 118 |
$r = $l; |
| 119 |
$g = $l; |
| 120 |
$b = $l; |
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} else { |
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$q = $l < 0.5 ? $l * ( 1 + $s ) : $l + $s - $l * $s; |
| 123 |
$p = 2 * $l - $q; |
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$r = gutenberg_tinycolor_hue_to_rgb( $p, $q, $h + 1 / 3 ); |
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$g = gutenberg_tinycolor_hue_to_rgb( $p, $q, $h ); |
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$b = gutenberg_tinycolor_hue_to_rgb( $p, $q, $h - 1 / 3 ); |
| 127 |
} |
| 128 |
|
| 129 |
return array( |
| 130 |
'r' => $r * 255, |
| 131 |
'g' => $g * 255, |
| 132 |
'b' => $b * 255, |
| 133 |
); |
| 134 |
} |
| 135 |
|
| 136 |
/** |
| 137 |
* Parses hex, hsl, and rgb CSS strings using the same regex as tinycolor v1.4.2 |
| 138 |
* used in the JavaScript. Only colors output from react-color are implemented. |
| 139 |
* |
| 140 |
* @see https://github.com/bgrins/TinyColor |
| 141 |
* @see https://github.com/casesandberg/react-color/ |
| 142 |
* |
| 143 |
* @param string $color_str CSS color string. |
| 144 |
* @return array RGB object. |
| 145 |
*/ |
| 146 |
function gutenberg_tinycolor_string_to_rgb( $color_str ) { |
| 147 |
$color_str = strtolower( trim( $color_str ) ); |
| 148 |
|
| 149 |
$css_integer = '[-\\+]?\\d+%?'; |
| 150 |
$css_number = '[-\\+]?\\d*\\.\\d+%?'; |
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|
| 152 |
$css_unit = '(?:' . $css_number . ')|(?:' . $css_integer . ')'; |
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|
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$permissive_match3 = '[\\s|\\(]+(' . $css_unit . ')[,|\\s]+(' . $css_unit . ')[,|\\s]+(' . $css_unit . ')\\s*\\)?'; |
| 155 |
$permissive_match4 = '[\\s|\\(]+(' . $css_unit . ')[,|\\s]+(' . $css_unit . ')[,|\\s]+(' . $css_unit . ')[,|\\s]+(' . $css_unit . ')\\s*\\)?'; |
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|
| 157 |
$rgb_regexp = '/^rgb' . $permissive_match3 . '$/'; |
| 158 |
if ( preg_match( $rgb_regexp, $color_str, $match ) ) { |
| 159 |
$rgb = gutenberg_tinycolor_rgb_to_rgb( |
| 160 |
array( |
| 161 |
'r' => $match[1], |
| 162 |
'g' => $match[2], |
| 163 |
'b' => $match[3], |
| 164 |
) |
| 165 |
); |
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|
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$rgb['a'] = 1; |
| 168 |
|
| 169 |
return $rgb; |
| 170 |
} |
| 171 |
|
| 172 |
$rgba_regexp = '/^rgba' . $permissive_match4 . '$/'; |
| 173 |
if ( preg_match( $rgba_regexp, $color_str, $match ) ) { |
| 174 |
$rgb = gutenberg_tinycolor_rgb_to_rgb( |
| 175 |
array( |
| 176 |
'r' => $match[1], |
| 177 |
'g' => $match[2], |
| 178 |
'b' => $match[3], |
| 179 |
) |
| 180 |
); |
| 181 |
|
| 182 |
$rgb['a'] = gutenberg_tinycolor_bound_alpha( $match[4] ); |
| 183 |
|
| 184 |
return $rgb; |
| 185 |
} |
| 186 |
|
| 187 |
$hsl_regexp = '/^hsl' . $permissive_match3 . '$/'; |
| 188 |
if ( preg_match( $hsl_regexp, $color_str, $match ) ) { |
| 189 |
$rgb = gutenberg_tinycolor_hsl_to_rgb( |
| 190 |
array( |
| 191 |
'h' => $match[1], |
| 192 |
's' => $match[2], |
| 193 |
'l' => $match[3], |
| 194 |
) |
| 195 |
); |
| 196 |
|
| 197 |
$rgb['a'] = 1; |
| 198 |
|
| 199 |
return $rgb; |
| 200 |
} |
| 201 |
|
| 202 |
$hsla_regexp = '/^hsla' . $permissive_match4 . '$/'; |
| 203 |
if ( preg_match( $hsla_regexp, $color_str, $match ) ) { |
| 204 |
$rgb = gutenberg_tinycolor_hsl_to_rgb( |
| 205 |
array( |
| 206 |
'h' => $match[1], |
| 207 |
's' => $match[2], |
| 208 |
'l' => $match[3], |
| 209 |
) |
| 210 |
); |
| 211 |
|
| 212 |
$rgb['a'] = gutenberg_tinycolor_bound_alpha( $match[4] ); |
| 213 |
|
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return $rgb; |
| 215 |
} |
| 216 |
|
| 217 |
$hex8_regexp = '/^#?([0-9a-fA-F]{2})([0-9a-fA-F]{2})([0-9a-fA-F]{2})([0-9a-fA-F]{2})$/'; |
| 218 |
if ( preg_match( $hex8_regexp, $color_str, $match ) ) { |
| 219 |
$rgb = gutenberg_tinycolor_rgb_to_rgb( |
| 220 |
array( |
| 221 |
'r' => base_convert( $match[1], 16, 10 ), |
| 222 |
'g' => base_convert( $match[2], 16, 10 ), |
| 223 |
'b' => base_convert( $match[3], 16, 10 ), |
| 224 |
) |
| 225 |
); |
| 226 |
|
| 227 |
$rgb['a'] = gutenberg_tinycolor_bound_alpha( |
| 228 |
base_convert( $match[4], 16, 10 ) / 255 |
| 229 |
); |
| 230 |
|
| 231 |
return $rgb; |
| 232 |
} |
| 233 |
|
| 234 |
$hex6_regexp = '/^#?([0-9a-fA-F]{2})([0-9a-fA-F]{2})([0-9a-fA-F]{2})$/'; |
| 235 |
if ( preg_match( $hex6_regexp, $color_str, $match ) ) { |
| 236 |
$rgb = gutenberg_tinycolor_rgb_to_rgb( |
| 237 |
array( |
| 238 |
'r' => base_convert( $match[1], 16, 10 ), |
| 239 |
'g' => base_convert( $match[2], 16, 10 ), |
| 240 |
'b' => base_convert( $match[3], 16, 10 ), |
| 241 |
) |
| 242 |
); |
| 243 |
|
| 244 |
$rgb['a'] = 1; |
| 245 |
|
| 246 |
return $rgb; |
| 247 |
} |
| 248 |
|
| 249 |
$hex4_regexp = '/^#?([0-9a-fA-F]{1})([0-9a-fA-F]{1})([0-9a-fA-F]{1})([0-9a-fA-F]{1})$/'; |
| 250 |
if ( preg_match( $hex4_regexp, $color_str, $match ) ) { |
| 251 |
$rgb = gutenberg_tinycolor_rgb_to_rgb( |
| 252 |
array( |
| 253 |
'r' => base_convert( $match[1] . $match[1], 16, 10 ), |
| 254 |
'g' => base_convert( $match[2] . $match[2], 16, 10 ), |
| 255 |
'b' => base_convert( $match[3] . $match[3], 16, 10 ), |
| 256 |
) |
| 257 |
); |
| 258 |
|
| 259 |
$rgb['a'] = gutenberg_tinycolor_bound_alpha( |
| 260 |
base_convert( $match[4] . $match[4], 16, 10 ) / 255 |
| 261 |
); |
| 262 |
|
| 263 |
return $rgb; |
| 264 |
} |
| 265 |
|
| 266 |
$hex3_regexp = '/^#?([0-9a-fA-F]{1})([0-9a-fA-F]{1})([0-9a-fA-F]{1})$/'; |
| 267 |
if ( preg_match( $hex3_regexp, $color_str, $match ) ) { |
| 268 |
$rgb = gutenberg_tinycolor_rgb_to_rgb( |
| 269 |
array( |
| 270 |
'r' => base_convert( $match[1] . $match[1], 16, 10 ), |
| 271 |
'g' => base_convert( $match[2] . $match[2], 16, 10 ), |
| 272 |
'b' => base_convert( $match[3] . $match[3], 16, 10 ), |
| 273 |
) |
| 274 |
); |
| 275 |
|
| 276 |
$rgb['a'] = 1; |
| 277 |
|
| 278 |
return $rgb; |
| 279 |
} |
| 280 |
|
| 281 |
// The JS color picker considers the string "transparent" to be a hex value, |
| 282 |
// so we need to handle it here as a special case. |
| 283 |
if ( 'transparent' === $color_str ) { |
| 284 |
return array( |
| 285 |
'r' => 0, |
| 286 |
'g' => 0, |
| 287 |
'b' => 0, |
| 288 |
'a' => 0, |
| 289 |
); |
| 290 |
} |
| 291 |
} |
| 292 |
|
| 293 |
|
| 294 |
/** |
| 295 |
* Registers the style and colors block attributes for block types that support it. |
| 296 |
* |
| 297 |
* @param WP_Block_Type $block_type Block Type. |
| 298 |
*/ |
| 299 |
function gutenberg_register_duotone_support( $block_type ) { |
| 300 |
$has_duotone_support = false; |
| 301 |
if ( property_exists( $block_type, 'supports' ) ) { |
| 302 |
$has_duotone_support = _wp_array_get( $block_type->supports, array( 'color', '__experimentalDuotone' ), false ); |
| 303 |
} |
| 304 |
|
| 305 |
if ( $has_duotone_support ) { |
| 306 |
if ( ! $block_type->attributes ) { |
| 307 |
$block_type->attributes = array(); |
| 308 |
} |
| 309 |
|
| 310 |
if ( ! array_key_exists( 'style', $block_type->attributes ) ) { |
| 311 |
$block_type->attributes['style'] = array( |
| 312 |
'type' => 'object', |
| 313 |
); |
| 314 |
} |
| 315 |
} |
| 316 |
} |
| 317 |
|
| 318 |
/** |
| 319 |
* Renders the duotone filter SVG and returns the CSS filter property to |
| 320 |
* reference the rendered SVG. |
| 321 |
* |
| 322 |
* @param array $preset Duotone preset value as seen in theme.json. |
| 323 |
* |
| 324 |
* @return string Duotone CSS filter property. |
| 325 |
*/ |
| 326 |
function gutenberg_render_duotone_filter_preset( $preset ) { |
| 327 |
$duotone_id = $preset['slug']; |
| 328 |
$duotone_colors = $preset['colors']; |
| 329 |
$filter_id = 'wp-duotone-' . $duotone_id; |
| 330 |
$duotone_values = array( |
| 331 |
'r' => array(), |
| 332 |
'g' => array(), |
| 333 |
'b' => array(), |
| 334 |
'a' => array(), |
| 335 |
); |
| 336 |
foreach ( $duotone_colors as $color_str ) { |
| 337 |
$color = gutenberg_tinycolor_string_to_rgb( $color_str ); |
| 338 |
|
| 339 |
$duotone_values['r'][] = $color['r'] / 255; |
| 340 |
$duotone_values['g'][] = $color['g'] / 255; |
| 341 |
$duotone_values['b'][] = $color['b'] / 255; |
| 342 |
$duotone_values['a'][] = $color['a']; |
| 343 |
} |
| 344 |
|
| 345 |
ob_start(); |
| 346 |
|
| 347 |
?> |
| 348 |
|
| 349 |
<svg |
| 350 |
xmlns="http://www.w3.org/2000/svg" |
| 351 |
viewBox="0 0 0 0" |
| 352 |
width="0" |
| 353 |
height="0" |
| 354 |
focusable="false" |
| 355 |
role="none" |
| 356 |
style="visibility: hidden; position: absolute; left: -9999px; overflow: hidden;" |
| 357 |
> |
| 358 |
<defs> |
| 359 |
<filter id="<?php echo esc_attr( $filter_id ); ?>"> |
| 360 |
<feColorMatrix |
| 361 |
color-interpolation-filters="sRGB" |
| 362 |
type="matrix" |
| 363 |
values=" |
| 364 |
.299 .587 .114 0 0 |
| 365 |
.299 .587 .114 0 0 |
| 366 |
.299 .587 .114 0 0 |
| 367 |
.299 .587 .114 0 0 |
| 368 |
" |
| 369 |
/> |
| 370 |
<feComponentTransfer color-interpolation-filters="sRGB" > |
| 371 |
<feFuncR type="table" tableValues="<?php echo esc_attr( implode( ' ', $duotone_values['r'] ) ); ?>" /> |
| 372 |
<feFuncG type="table" tableValues="<?php echo esc_attr( implode( ' ', $duotone_values['g'] ) ); ?>" /> |
| 373 |
<feFuncB type="table" tableValues="<?php echo esc_attr( implode( ' ', $duotone_values['b'] ) ); ?>" /> |
| 374 |
<feFuncA type="table" tableValues="<?php echo esc_attr( implode( ' ', $duotone_values['a'] ) ); ?>" /> |
| 375 |
</feComponentTransfer> |
| 376 |
<feComposite in2="SourceGraphic" operator="in" /> |
| 377 |
</filter> |
| 378 |
</defs> |
| 379 |
</svg> |
| 380 |
|
| 381 |
<?php |
| 382 |
|
| 383 |
$svg = ob_get_clean(); |
| 384 |
|
| 385 |
if ( ! defined( 'SCRIPT_DEBUG' ) || ! SCRIPT_DEBUG ) { |
| 386 |
// Clean up the whitespace. |
| 387 |
$svg = preg_replace( "/[\r\n\t ]+/", ' ', $svg ); |
| 388 |
$svg = preg_replace( '/> </', '><', $svg ); |
| 389 |
$svg = trim( $svg ); |
| 390 |
} |
| 391 |
|
| 392 |
add_action( |
| 393 |
// SVG filters won't render at all in the head of a document and |
| 394 |
// Safari incorrectly renders SVG filters in the footer, so the |
| 395 |
// beginning of the body seems to be the safest place to render. |
| 396 |
'wp_body_open', |
| 397 |
function () use ( $svg ) { |
| 398 |
echo $svg; |
| 399 |
} |
| 400 |
); |
| 401 |
|
| 402 |
return "url('#" . $filter_id . "')"; |
| 403 |
} |
| 404 |
|
| 405 |
/** |
| 406 |
* Render out the duotone stylesheet and SVG. |
| 407 |
* |
| 408 |
* @param string $block_content Rendered block content. |
| 409 |
* @param array $block Block object. |
| 410 |
* @return string Filtered block content. |
| 411 |
*/ |
| 412 |
function gutenberg_render_duotone_support( $block_content, $block ) { |
| 413 |
$block_type = WP_Block_Type_Registry::get_instance()->get_registered( $block['blockName'] ); |
| 414 |
|
| 415 |
$duotone_support = false; |
| 416 |
if ( $block_type && property_exists( $block_type, 'supports' ) ) { |
| 417 |
$duotone_support = _wp_array_get( $block_type->supports, array( 'color', '__experimentalDuotone' ), false ); |
| 418 |
} |
| 419 |
|
| 420 |
$has_duotone_attribute = isset( $block['attrs']['style']['color']['duotone'] ); |
| 421 |
|
| 422 |
if ( |
| 423 |
! $duotone_support || |
| 424 |
! $has_duotone_attribute |
| 425 |
) { |
| 426 |
return $block_content; |
| 427 |
} |
| 428 |
|
| 429 |
$filter_preset = array( |
| 430 |
'slug' => uniqid(), |
| 431 |
'colors' => $block['attrs']['style']['color']['duotone'], |
| 432 |
); |
| 433 |
$filter_property = gutenberg_render_duotone_filter_preset( $filter_preset ); |
| 434 |
$filter_id = 'wp-duotone-' . $filter_preset['slug']; |
| 435 |
|
| 436 |
$scope = '.' . $filter_id; |
| 437 |
$selectors = explode( ',', $duotone_support ); |
| 438 |
$scoped = array(); |
| 439 |
foreach ( $selectors as $sel ) { |
| 440 |
$scoped[] = $scope . ' ' . trim( $sel ); |
| 441 |
} |
| 442 |
$selector = implode( ', ', $scoped ); |
| 443 |
|
| 444 |
// !important is needed because these styles render before global styles, |
| 445 |
// and they should be overriding the duotone filters set by global styles. |
| 446 |
$filter_style = defined( 'SCRIPT_DEBUG' ) && SCRIPT_DEBUG |
| 447 |
? $selector . " {\n\tfilter: " . $filter_property . " !important;\n}\n" |
| 448 |
: $selector . '{filter:' . $filter_property . ' !important;}'; |
| 449 |
|
| 450 |
wp_register_style( $filter_id, false, array(), true, true ); |
| 451 |
wp_add_inline_style( $filter_id, $filter_style ); |
| 452 |
wp_enqueue_style( $filter_id ); |
| 453 |
|
| 454 |
// Like the layout hook, this assumes the hook only applies to blocks with a single wrapper. |
| 455 |
return preg_replace( |
| 456 |
'/' . preg_quote( 'class="', '/' ) . '/', |
| 457 |
'class="' . $filter_id . ' ', |
| 458 |
$block_content, |
| 459 |
1 |
| 460 |
); |
| 461 |
} |
| 462 |
|
| 463 |
// Register the block support. |
| 464 |
WP_Block_Supports::get_instance()->register( |
| 465 |
'duotone', |
| 466 |
array( |
| 467 |
'register_attribute' => 'gutenberg_register_duotone_support', |
| 468 |
) |
| 469 |
); |
| 470 |
|
| 471 |
// Remove WordPress core filter to avoid rendering duplicate support elements. |
| 472 |
remove_filter( 'render_block', 'wp_render_duotone_support', 10, 2 ); |
| 473 |
add_filter( 'render_block', 'gutenberg_render_duotone_support', 10, 2 ); |
| 474 |
|
