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<?php |
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/* |
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* This file is part of the core-bundle package. |
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* |
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* (c) 2019 WEBEWEB |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace WBW\Bundle\CoreBundle\Twig\Extension; |
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use Twig\TwigFilter; |
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use Twig\TwigFunction; |
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/** |
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* Stylesheet Twig extension. |
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* |
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* @author webeweb <https://github.com/webeweb/> |
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* @package WBW\Bundle\CoreBundle\Twig\Extension\CSS |
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*/ |
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class StylesheetTwigExtension extends AbstractTwigExtension { |
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/** |
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* Service name. |
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* |
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* @var string |
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*/ |
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const SERVICE_NAME = "wbw.core.twig.extension.stylesheet"; |
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/** |
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* Displays a rgba(). |
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* |
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* @param string $color The hexadecimal color. |
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* @param float $alpha The alpha channel. |
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* @return string Returns the rgba(). |
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*/ |
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public function cssRgba($color, $alpha = 1.00) { |
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if (0 === preg_match_all("/^#?([A-Fa-f0-9]{6}|[A-Fa-f0-9]{3})$/", strtolower($color), $hex)) { |
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return ""; |
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} |
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$length = strlen($hex[1][0]); |
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$pattern = "/[A-Fa-f0-9]{" . intval($length / 3) . "}/"; |
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preg_match_all($pattern, $hex[1][0], $channels); |
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if (3 === $length) { |
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$channels[0][0] = str_repeat($channels[0][0], 2); |
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$channels[0][1] = str_repeat($channels[0][1], 2); |
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$channels[0][2] = str_repeat($channels[0][2], 2); |
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} |
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$template = "rgba(%r%, %g%, %b%, %a%)"; |
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return str_replace(["%r%", "%g%", "%b%", "%a%"], [hexdec($channels[0][0]), hexdec($channels[0][1]), hexdec($channels[0][2]), number_format($alpha, 2)], $template); |
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} |
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/** |
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* Get the Twig filters. |
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* |
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* @return TwigFilter[] Returns the Twig filters. |
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*/ |
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public function getFilters() { |
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return [ |
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new TwigFilter("cssRgba", [$this, "cssRgba"], ["is_safe" => ["html"]]), |
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]; |
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} |
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/** |
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* Get the Twig functions. |
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* |
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* @return TwigFunction[] Returns the Twig functions. |
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*/ |
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public function getFunctions() { |
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return [ |
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new TwigFunction("cssRgba", [$this, "cssRgba"], ["is_safe" => ["html"]]), |
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]; |
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} |
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} |
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webeweb /
core-bundle
