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<?php |
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namespace Yoast\WP\SEO\Helpers\Twitter; |
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|
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use Yoast\WP\SEO\Helpers\Image_Helper as Base_Image_Helper; |
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|
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/** |
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* A helper object for Twitter images. |
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*/ |
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class Image_Helper { |
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|
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/** |
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* The base image helper. |
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* |
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* @var Base_Image_Helper |
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*/ |
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private $image; |
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|
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/** |
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* Image_Helper constructor. |
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* |
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* @codeCoverageIgnore |
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* |
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* @param Base_Image_Helper $image The image helper. |
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*/ |
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public function __construct( Base_Image_Helper $image ) { |
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$this->image = $image; |
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} |
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|
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/** |
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* The image size to use for Twitter. |
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* |
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* @return string Image size string. |
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*/ |
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public function get_image_size() { |
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/** |
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* Filter: 'wpseo_twitter_image_size' - Allow changing the Twitter Card image size. |
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* |
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* @param string $featured_img Image size string. |
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*/ |
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return (string) \apply_filters( 'wpseo_twitter_image_size', 'full' ); |
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} |
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|
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/** |
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* Retrieves an image url by its id. |
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* |
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* @param int $image_id The image id. |
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* |
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* @return string The image url. Empty string if the attachment is not valid. |
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*/ |
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public function get_by_id( $image_id ) { |
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if ( ! $this->image->is_valid_attachment( $image_id ) ) { |
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return ''; |
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} |
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|
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return $this->image->get_attachment_image_source( $image_id, $this->get_image_size() ); |
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} |
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} |
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|
