diff options
Diffstat (limited to 'plugins/jetpack/_inc/lib/class.jetpack-photon-image-sizes.php')
| -rw-r--r-- | plugins/jetpack/_inc/lib/class.jetpack-photon-image-sizes.php | 182 |
1 files changed, 182 insertions, 0 deletions
diff --git a/plugins/jetpack/_inc/lib/class.jetpack-photon-image-sizes.php b/plugins/jetpack/_inc/lib/class.jetpack-photon-image-sizes.php new file mode 100644 index 00000000..8dc22d19 --- /dev/null +++ b/plugins/jetpack/_inc/lib/class.jetpack-photon-image-sizes.php @@ -0,0 +1,182 @@ +<?php +/** + * The Image Sizes library. + * + * @package jetpack + */ + +jetpack_require_lib( 'class.jetpack-photon-image' ); + +/** + * Class Jetpack_Photon_ImageSizes + * + * Manages image resizing via Jetpack CDN Service. + */ +class Jetpack_Photon_ImageSizes { + + /** + * @var array $data Attachment metadata. + */ + public $data; + + /** + * @var Image Image to be resized. + */ + public $image; + + /** + * @var null|array $sizes Intermediate sizes. + */ + public static $sizes = null; + + /** + * Construct new sizes meta + * + * @param int $attachment_id Attachment ID. + * @param array $data Attachment metadata. + */ + public function __construct( $attachment_id, $data ) { + $this->data = $data; + $this->image = new Jetpack_Photon_Image( $data, get_post_mime_type( $attachment_id ) ); + $this->generate_sizes(); + } + + /** + * Generate sizes for attachment. + * + * @return array Array of sizes; empty array as failure fallback. + */ + protected function generate_sizes() { + + // There is no need to generate the sizes a new for every single image. + if ( null !== self::$sizes ) { + return self::$sizes; + } + + /* + * The following logic is copied over from wp_generate_attachment_metadata + */ + $_wp_additional_image_sizes = wp_get_additional_image_sizes(); + + $sizes = array(); + + $intermediate_image_sizes = get_intermediate_image_sizes(); + + foreach ( $intermediate_image_sizes as $s ) { + $sizes[ $s ] = array( + 'width' => '', + 'height' => '', + 'crop' => false, + ); + if ( isset( $_wp_additional_image_sizes[ $s ]['width'] ) ) { + // For theme-added sizes. + $sizes[ $s ]['width'] = intval( $_wp_additional_image_sizes[ $s ]['width'] ); + } else { + // For default sizes set in options. + $sizes[ $s ]['width'] = get_option( "{$s}_size_w" ); + } + + if ( isset( $_wp_additional_image_sizes[ $s ]['height'] ) ) { + // For theme-added sizes. + $sizes[ $s ]['height'] = intval( $_wp_additional_image_sizes[ $s ]['height'] ); + } else { + // For default sizes set in options. + $sizes[ $s ]['height'] = get_option( "{$s}_size_h" ); + } + + if ( isset( $_wp_additional_image_sizes[ $s ]['crop'] ) ) { + // For theme-added sizes. + $sizes[ $s ]['crop'] = $_wp_additional_image_sizes[ $s ]['crop']; + } else { + // For default sizes set in options. + $sizes[ $s ]['crop'] = get_option( "{$s}_crop" ); + } + } + + self::$sizes = $sizes; + + return $sizes; + } + + /** + * @return array + */ + public function filtered_sizes() { + // Remove filter preventing the creation of advanced sizes. + remove_filter( + 'intermediate_image_sizes_advanced', + array( 'Jetpack_Photon', 'filter_photon_noresize_intermediate_sizes' ) + ); + + /** This filter is documented in wp-admin/includes/image.php */ + $sizes = apply_filters( 'intermediate_image_sizes_advanced', self::$sizes, $this->data ); + + // Re-add the filter removed above. + add_filter( + 'intermediate_image_sizes_advanced', + array( 'Jetpack_Photon', 'filter_photon_noresize_intermediate_sizes' ) + ); + + return (array) $sizes; + } + + /** + * Standardises and validates the size_data array. + * + * @param array $size_data Size data array - at least containing height or width key. Can contain crop as well. + * + * @return array Array with populated width, height and crop keys; empty array if no width and height are provided. + */ + public function standardize_size_data( $size_data ) { + $has_at_least_width_or_height = ( isset( $size_data['width'] ) || isset( $size_data['height'] ) ); + if ( ! $has_at_least_width_or_height ) { + return array(); + } + + $defaults = array( + 'width' => null, + 'height' => null, + 'crop' => false, + ); + + return array_merge( $defaults, $size_data ); + } + + /** + * Get sizes for attachment post meta. + * + * @return array ImageSizes for attachment postmeta. + */ + public function generate_sizes_meta() { + + $metadata = array(); + + foreach ( $this->filtered_sizes() as $size => $size_data ) { + + $size_data = $this->standardize_size_data( $size_data ); + + if ( true === empty( $size_data ) ) { + continue; + } + + $resized_image = $this->resize( $size_data ); + + if ( true === is_array( $resized_image ) ) { + $metadata[ $size ] = $resized_image; + } + } + + return $metadata; + } + + /** + * @param array $size_data + * + * @return array|\WP_Error Array for usage in $metadata['sizes']; WP_Error on failure. + */ + protected function resize( $size_data ) { + + return $this->image->get_size( $size_data ); + + } +} |