Differential D25540 Diff 1891 src/infrastructure/markup/markuprule/PhutilRemarkupHexColorCodeRule.php

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src/infrastructure/markup/markuprule/PhutilRemarkupHexColorCodeRule.php

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				<?php

				final class PhutilRemarkupHexColorCodeRule
				extends PhabricatorRemarkupCustomInlineRule {

				public function getPriority() {
				return 1000.0;
				}

				public function apply($text) {
				// Match {#FFFFFF}
				valerio.bozzolanUnsubmitted Done Inline Actions oh NO extra newline here (nuclear alarm sound) valerio.bozzolan: oh NO extra newline here (nuclear alarm sound)
				return preg_replace_callback(
				'@\B\{(#([0-9a-fA-F]{3}){1,2})\}@',
				array($this, 'markupHexColorCodedText'),
				20after4AuthorUnsubmitted Done Inline Actions repeat exactly 3 times for the 3 digit codes, then repeat that sequence exactly 1 or 2 times for 3 or 6 digits. 20after4: repeat exactly 3 times for the 3 digit codes, then repeat that sequence exactly 1 or 2 times…
				$text);
				}

				protected function contrastingColor($color_code) {
				$match = ltrim($color_code, '#');
				$colors_hex = str_split($match, strlen($match) / 3);
				list($r, $g, $b) = array_map('hexdec', $colors_hex);
				// Calculation adapted from Myndex, CC BY-SA 4.0
				// https://stackoverflow.com/a/69869976
				$y = pow((double)$r / 255.0, 2.2) * 0.2126 +
				pow((double)$g / 255.0, 2.2) * 0.7152 +
				valerio.bozzolanUnsubmitted Done Inline Actions Maybe we can move public methods above, so to have protected methods below valerio.bozzolan: Maybe we can move public methods above, so to have protected methods below
				pow((double)$b / 255.0, 2.2) * 0.0722;

				return ($y < 0.34) ? 'white' : 'black';
				aviveyUnsubmitted Done Inline Actions can the repeat syntax say "exactly 6 times" avivey: can the repeat syntax say "exactly 6 times"
				20after4AuthorUnsubmitted Done Inline Actions Good catch. 20after4: Good catch.
				}

				protected function markupHexColorCodedText(array $matches) {
				if ($this->getEngine()->isTextMode()) {
				$result = $matches[1];
				} else {
				if (count($matches) < 2) {
				return $matches[0];
				} else {
				$len = strlen($matches[1]);
				if (7 !== $len && 4 !== $len) {
				return $matches[0];
				}
				}
				$match = $matches[1];
				$fg = $this->contrastingColor($match);
				$result = phutil_tag(
				'tt',
				aviveyUnsubmitted Done Inline Actions I think we use `{$foo}` avivey: I think we use `{$foo}`
				array(
				'class' => 'remarkup-monospaced',
				'style' => "color: {$fg}; background-color: {$match};",
				),
				$match);
				}

				return $this->getEngine()->storeText($result);
				}

				}