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<?php |
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/** |
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* This file is part of the bootstrap-bundle package. |
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* |
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* (c) 2018 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\BootstrapBundle\Twig\Extension\CSS; |
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use SplFileObject; |
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use Symfony\Component\HttpKernel\Kernel; |
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use Symfony\Component\Serializer\Normalizer\DataUriNormalizer; |
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use Twig_SimpleFunction; |
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use WBW\Library\Core\Utility\Argument\ArrayUtility; |
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/** |
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* Image Twig extension. |
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* |
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* @author webeweb <https://github.com/webeweb/> |
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* @package WBW\Bundle\BootstrapBundle\Twig\Extension\CSS |
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* @see https://getbootstrap.com/docs/3.3/css/#images |
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*/ |
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class ImageTwigExtension extends AbstractImageTwigExtension { |
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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 = "webeweb.bootstrapbundle.twig.extension.css.image"; |
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/** |
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* Constructor. |
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*/ |
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public function __construct() { |
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parent::__construct(); |
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} |
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/** |
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* Encode an URI into base 64. |
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* |
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* @param string $uri The URI. |
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* @return string Returns the URI encoded into base 64. |
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*/ |
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private function base64Encode($uri) { |
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// Check the URI. |
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if (null === $uri) { |
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return null; |
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} |
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// Initialize a SPL file object. |
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$splFileObject = new SplFileObject($uri); |
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// Check the Kernel version. |
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if (30100 < Kernel::VERSION_ID) { |
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// Use a Data URI normalizer. |
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return (new DataUriNormalizer())->normalize($splFileObject); |
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} |
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// Read the SPL file object. |
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$data = ""; |
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while (false === $splFileObject->eof()) { |
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$data .= $splFileObject->fgets(); |
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} |
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// Encode into base 64. |
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return sprintf("data:%s;base64,%s", mime_content_type($uri), base64_encode($data)); |
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} |
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/** |
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* Displays a Bootstrap image "Base 64". |
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* |
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* @param array $args The arguments. |
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* @return string Returns the Bootstrap base 64 image. |
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*/ |
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public function bootstrapImageBase64Function(array $args = []) { |
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// Initialize the src. |
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$src = $this->base64Encode(ArrayUtility::get($args, "src")); |
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// Return the Bootstrap image. |
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return $this->bootstrapImage($src, ArrayUtility::get($args, "alt"), ArrayUtility::get($args, "width"), ArrayUtility::get($args, "height"), ArrayUtility::get($args, "class"), ArrayUtility::get($args, "usemap")); |
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} |
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/** |
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* Get the Twig functions. |
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* |
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* @return array Returns the Twig functions. |
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*/ |
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public function getFunctions() { |
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return [ |
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new Twig_SimpleFunction("bootstrapImageBase64", [$this, "bootstrapImageBase64Function"], ["is_safe" => ["html"]]), |
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]; |
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} |
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} |
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webeweb /
bootstrap-bundle
