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<?php |
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namespace GeminiLabs\Castor\Helpers; |
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use GeminiLabs\Castor\Helpers\PostMeta; |
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use GeminiLabs\Castor\Helpers\Theme; |
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use WP_Post; |
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use WP_Query; |
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class Media |
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{ |
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public $postmeta; |
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public $theme; |
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public function __construct( PostMeta $postmeta, Theme $theme ) |
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{ |
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$this->postmeta = $postmeta; |
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$this->theme = $theme; |
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} |
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/** |
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* @return string |
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*/ |
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public function gallery( array $args = [] ) |
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{ |
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$gallery = $this->getGallery( $args ); |
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return $this->renderGallery( $gallery ) . $this->renderGalleryPagination( $gallery ); |
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} |
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/** |
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* @return WP_Query |
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*/ |
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public function getGallery( array $args ) |
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{ |
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$args = $this->normalizeArgs( $args ); |
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return new WP_Query([ |
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'orderby' => 'post__in', |
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'paged' => $this->getPaged(), |
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'post__in' => $this->getMediaIds( $args ), |
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'post_mime_type' => 'image', |
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'post_type' => 'attachment', |
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'post_status' => 'inherit', |
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'posts_per_page' => $this->getImagesPerPage( $args ), |
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]); |
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} |
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/** |
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* @return string |
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*/ |
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public function renderGallery( WP_Query $gallery ) |
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{ |
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$images = array_reduce( $gallery->posts, function( $images, $attachment ) { |
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return $images . $this->renderGalleryImage( $attachment ); |
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}); |
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return sprintf( '<div class="gallery-images" itemscope itemtype="http://schema.org/ImageGallery">%s</div>', $images ); |
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} |
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/** |
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* @return null|string |
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*/ |
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public function renderGalleryImage( WP_Post $attachment ) |
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{ |
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$image = $this->getImageSrc( $attachment->ID ); |
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if( !$image )return; |
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return sprintf( |
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'<figure data-w="%s" data-h="%s" data-ps="%s" itemprop="associatedMedia" itemscope itemtype="http://schema.org/ImageObject">' . |
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'<a href="%s" itemprop="contentUrl"><img src="%s" data-src="%s" itemprop="thumbnail" alt="%s"/></a>' . |
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'<figcaption itemprop="caption description">%s<span itemprop="copyrightHolder">%s</span></figcaption>' . |
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'</figure>', |
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$image->thumbnail['width'], |
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$image->thumbnail['height'], |
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$this->getPhotoswipeData( $image ), |
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get_attachment_link( $attachment->ID ), |
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$this->theme->imageUri( 'blank.gif' ), |
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$image->thumbnail['url'], |
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$image->alt, |
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$image->caption, |
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$image->copyright |
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); |
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} |
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/** |
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* @return string |
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*/ |
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public function renderGalleryPagination( WP_Query $query ) |
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{ |
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return paginate_links([ |
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'before_page_number' => '<span class="screen-reader-text">' . __( 'Page', 'castor' ) . ' </span>', |
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'current' => $query->query['paged'], |
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'mid_size' => 1, |
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'next_text' => __( 'Next', 'castor' ), |
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'prev_text' => __( 'Previous', 'castor' ), |
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'total' => $query->max_num_pages, |
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]); |
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} |
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/** |
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* @return mixed |
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*/ |
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protected function getImagesPerPage( array $args ) |
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{ |
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$args = $this->normalizeArgs( $args ); |
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return $this->postmeta->get( $args['per_page'], [ |
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'fallback' => -1, |
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]); |
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} |
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/** |
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* @param int $id |
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* |
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* @return null|object |
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*/ |
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protected function getImageSrc( $id ) |
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{ |
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$thumbnail = wp_get_attachment_image_src( $id, 'thumbnail' ); |
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if( !$thumbnail )return; |
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$medium = $this->normalizeImageSrc( wp_get_attachment_image_src( $id, 'medium' ), $thumbnail ); |
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$large = $this->normalizeImageSrc( wp_get_attachment_image_src( $id, 'large' ), $medium ); |
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return (object) [ |
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'alt' => trim( strip_tags( get_post_meta( $id, '_wp_attachment_image_alt', true ))), |
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'caption' => wp_get_attachment_caption( $id ), |
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'copyright' => trim( strip_tags( get_post_meta( $id, '_copyright', true ))), |
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'thumbnail' => $this->normalizeImageSrc( $thumbnail ), |
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'medium' => $medium, |
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'large' => $large, |
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]; |
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} |
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/** |
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* @return array |
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*/ |
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protected function getMediaIds( array $args ) |
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{ |
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$args = $this->normalizeArgs( $args ); |
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return wp_parse_id_list( $this->postmeta->get( $args['media'], [ |
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'ID' => $this->postmeta->get( $args['gallery'] ), |
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'single' => false, |
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])); |
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} |
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/** |
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* @return int |
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*/ |
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protected function getPaged() |
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{ |
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return intval( get_query_var(( is_front_page() ? 'page' : 'paged' ))) ?: 1; |
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} |
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/** |
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* @return string |
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*/ |
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protected function getPhotoswipeData( $image ) |
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{ |
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return sprintf( '{o:{src:"%s",w:"%d",h:"%d"},m:{src:"%s",w:"%d",h:"%d"}}', |
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$image->large['url'], |
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$image->large['width'], |
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$image->large['height'], |
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$image->medium['url'], |
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$image->medium['width'], |
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$image->medium['height'] |
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); |
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} |
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/** |
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* @return array |
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*/ |
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protected function normalizeArgs( array $args = [] ) |
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{ |
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return shortcode_atts([ |
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'gallery' => 'gallery', |
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'media' => 'media', |
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'per_page' => 'per_page', |
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], $args ); |
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} |
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/** |
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* @param mixed $fallback |
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* |
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* @return array |
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*/ |
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protected function normalizeImageSrc( array $image, $fallback = false ) |
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{ |
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if( is_array( $fallback ) && count( array_diff( $image, $fallback )) < 2 ) { |
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$image = $fallback; |
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} |
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return [ |
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'url' => $image[0], |
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'width' => $image[1], |
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'height' => $image[2], |
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]; |
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} |
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} |
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pryley /
castor-framework
