0 ) $max_width = min( intval($content_width), $max_width ); } elseif ( isset( $_wp_additional_image_sizes ) && count( $_wp_additional_image_sizes ) && in_array( $size, array_keys( $_wp_additional_image_sizes ) ) ) { $max_width = intval( $_wp_additional_image_sizes[$size]['width'] ); $max_height = intval( $_wp_additional_image_sizes[$size]['height'] ); if ( intval($content_width) > 0 && 'edit' == $context ) // Only in admin. Assume that theme authors know what they're doing. $max_width = min( intval($content_width), $max_width ); } // $size == 'full' has no constraint else { $max_width = $width; $max_height = $height; } /** * Filter the maximum image size dimensions for the editor. * * @since 2.5.0 * * @param array $max_image_size An array with the width as the first element, * and the height as the second element. * @param string|array $size Size of what the result image should be. * @param string $context The context the image is being resized for. * Possible values are 'display' (like in a theme) * or 'edit' (like inserting into an editor). */ list( $max_width, $max_height ) = apply_filters( 'editor_max_image_size', array( $max_width, $max_height ), $size, $context ); return wp_constrain_dimensions( $width, $height, $max_width, $max_height ); } /** * Retrieve width and height attributes using given width and height values. * * Both attributes are required in the sense that both parameters must have a * value, but are optional in that if you set them to false or null, then they * will not be added to the returned string. * * You can set the value using a string, but it will only take numeric values. * If you wish to put 'px' after the numbers, then it will be stripped out of * the return. * * @since 2.5.0 * * @param int|string $width Image width in pixels. * @param int|string $height Image height in pixels. * @return string HTML attributes for width and, or height. */ function image_hwstring( $width, $height ) { $out = ''; if ($width) $out .= 'width="'.intval($width).'" '; if ($height) $out .= 'height="'.intval($height).'" '; return $out; } /** * Scale an image to fit a particular size (such as 'thumb' or 'medium'). * * Array with image url, width, height, and whether is intermediate size, in * that order is returned on success is returned. $is_intermediate is true if * $url is a resized image, false if it is the original. * * The URL might be the original image, or it might be a resized version. This * function won't create a new resized copy, it will just return an already * resized one if it exists. * * A plugin may use the 'image_downsize' filter to hook into and offer image * resizing services for images. The hook must return an array with the same * elements that are returned in the function. The first element being the URL * to the new image that was resized. * * @since 2.5.0 * * @param int $id Attachment ID for image. * @param array|string $size Optional. Image size to scale to. Accepts any valid image size, * or an array of width and height values in pixels (in that order). * Default 'medium'. * @return false|array Array containing the image URL, width, height, and boolean for whether * the image is an intermediate size. False on failure. */ function image_downsize( $id, $size = 'medium' ) { if ( !wp_attachment_is_image($id) ) return false; /** * Filter whether to preempt the output of image_downsize(). * * Passing a truthy value to the filter will effectively short-circuit * down-sizing the image, returning that value as output instead. * * @since 2.5.0 * * @param bool $downsize Whether to short-circuit the image downsize. Default false. * @param int $id Attachment ID for image. * @param array|string $size Size of image. Image size or array of width and height values (in that order). * Default 'medium'. */ if ( $out = apply_filters( 'image_downsize', false, $id, $size ) ) { return $out; } $img_url = wp_get_attachment_url($id); $meta = wp_get_attachment_metadata($id); $width = $height = 0; $is_intermediate = false; $img_url_basename = wp_basename($img_url); // try for a new style intermediate size if ( $intermediate = image_get_intermediate_size($id, $size) ) { $img_url = str_replace($img_url_basename, $intermediate['file'], $img_url); $width = $intermediate['width']; $height = $intermediate['height']; $is_intermediate = true; } elseif ( $size == 'thumbnail' ) { // fall back to the old thumbnail if ( ($thumb_file = wp_get_attachment_thumb_file($id)) && $info = getimagesize($thumb_file) ) { $img_url = str_replace($img_url_basename, wp_basename($thumb_file), $img_url); $width = $info[0]; $height = $info[1]; $is_intermediate = true; } } if ( !$width && !$height && isset( $meta['width'], $meta['height'] ) ) { // any other type: use the real image $width = $meta['width']; $height = $meta['height']; } if ( $img_url) { // we have the actual image size, but might need to further constrain it if content_width is narrower list( $width, $height ) = image_constrain_size_for_editor( $width, $height, $size ); return array( $img_url, $width, $height, $is_intermediate ); } return false; } /** * Register a new image size. * * Cropping behavior for the image size is dependent on the value of $crop: * 1. If false (default), images will be scaled, not cropped. * 2. If an array in the form of array( x_crop_position, y_crop_position ): * - x_crop_position accepts 'left' 'center', or 'right'. * - y_crop_position accepts 'top', 'center', or 'bottom'. * Images will be cropped to the specified dimensions within the defined crop area. * 3. If true, images will be cropped to the specified dimensions using center positions. * * @since 2.9.0 * * @global array $_wp_additional_image_sizes Associative array of additional image sizes. * * @param string $name Image size identifier. * @param int $width Image width in pixels. * @param int $height Image height in pixels. * @param bool|array $crop Optional. Whether to crop images to specified width and height or resize. * An array can specify positioning of the crop area. Default false. */ function add_image_size( $name, $width = 0, $height = 0, $crop = false ) { global $_wp_additional_image_sizes; $_wp_additional_image_sizes[ $name ] = array( 'width' => absint( $width ), 'height' => absint( $height ), 'crop' => $crop, ); } /** * Check if an image size exists. * * @since 3.9.0 * * @global array $_wp_additional_image_sizes * * @param string $name The image size to check. * @return bool True if the image size exists, false if not. */ function has_image_size( $name ) { global $_wp_additional_image_sizes; return isset( $_wp_additional_image_sizes[ $name ] ); } /** * Remove a new image size. * * @since 3.9.0 * * @global array $_wp_additional_image_sizes * * @param string $name The image size to remove. * @return bool True if the image size was successfully removed, false on failure. */ function remove_image_size( $name ) { global $_wp_additional_image_sizes; if ( isset( $_wp_additional_image_sizes[ $name ] ) ) { unset( $_wp_additional_image_sizes[ $name ] ); return true; } return false; } /** * Registers an image size for the post thumbnail. * * @since 2.9.0 * * @see add_image_size() for details on cropping behavior. * * @param int $width Image width in pixels. * @param int $height Image height in pixels. * @param bool|array $crop Optional. Whether to crop images to specified width and height or resize. * An array can specify positioning of the crop area. Default false. */ function set_post_thumbnail_size( $width = 0, $height = 0, $crop = false ) { add_image_size( 'post-thumbnail', $width, $height, $crop ); } /** * Gets an img tag for an image attachment, scaling it down if requested. * * The filter 'get_image_tag_class' allows for changing the class name for the * image without having to use regular expressions on the HTML content. The * parameters are: what WordPress will use for the class, the Attachment ID, * image align value, and the size the image should be. * * The second filter 'get_image_tag' has the HTML content, which can then be * further manipulated by a plugin to change all attribute values and even HTML * content. * * @since 2.5.0 * * @param int $id Attachment ID. * @param string $alt Image Description for the alt attribute. * @param string $title Image Description for the title attribute. * @param string $align Part of the class name for aligning the image. * @param string|array $size Optional. Registered image size to retrieve a tag for. Accepts any * valid image size, or an array of width and height values in pixels * (in that order). Default 'medium'. * @return string HTML IMG element for given image attachment */ function get_image_tag( $id, $alt, $title, $align, $size = 'medium' ) { list( $img_src, $width, $height ) = image_downsize($id, $size); $hwstring = image_hwstring($width, $height); $title = $title ? 'title="' . esc_attr( $title ) . '" ' : ''; $class = 'align' . esc_attr($align) .' size-' . esc_attr($size) . ' wp-image-' . $id; /** * Filter the value of the attachment's image tag class attribute. * * @since 2.6.0 * * @param string $class CSS class name or space-separated list of classes. * @param int $id Attachment ID. * @param string $align Part of the class name for aligning the image. * @param string|array $size Size of image. Image size or array of width and height values (in that order). * Default 'medium'. */ $class = apply_filters( 'get_image_tag_class', $class, $id, $align, $size ); $html = '' . esc_attr($alt) . ''; /** * Filter the HTML content for the image tag. * * @since 2.6.0 * * @param string $html HTML content for the image. * @param int $id Attachment ID. * @param string $alt Alternate text. * @param string $title Attachment title. * @param string $align Part of the class name for aligning the image. * @param string|array $size Size of image. Image size or array of width and height values (in that order). * Default 'medium'. */ return apply_filters( 'get_image_tag', $html, $id, $alt, $title, $align, $size ); } /** * Calculates the new dimensions for a down-sampled image. * * If either width or height are empty, no constraint is applied on * that dimension. * * @since 2.5.0 * * @param int $current_width Current width of the image. * @param int $current_height Current height of the image. * @param int $max_width Optional. Max width in pixels to constrain to. Default 0. * @param int $max_height Optional. Max height in pixels to constrain to. Default 0. * @return array First item is the width, the second item is the height. */ function wp_constrain_dimensions( $current_width, $current_height, $max_width = 0, $max_height = 0 ) { if ( !$max_width && !$max_height ) return array( $current_width, $current_height ); $width_ratio = $height_ratio = 1.0; $did_width = $did_height = false; if ( $max_width > 0 && $current_width > 0 && $current_width > $max_width ) { $width_ratio = $max_width / $current_width; $did_width = true; } if ( $max_height > 0 && $current_height > 0 && $current_height > $max_height ) { $height_ratio = $max_height / $current_height; $did_height = true; } // Calculate the larger/smaller ratios $smaller_ratio = min( $width_ratio, $height_ratio ); $larger_ratio = max( $width_ratio, $height_ratio ); if ( (int) round( $current_width * $larger_ratio ) > $max_width || (int) round( $current_height * $larger_ratio ) > $max_height ) { // The larger ratio is too big. It would result in an overflow. $ratio = $smaller_ratio; } else { // The larger ratio fits, and is likely to be a more "snug" fit. $ratio = $larger_ratio; } // Very small dimensions may result in 0, 1 should be the minimum. $w = max ( 1, (int) round( $current_width * $ratio ) ); $h = max ( 1, (int) round( $current_height * $ratio ) ); // Sometimes, due to rounding, we'll end up with a result like this: 465x700 in a 177x177 box is 117x176... a pixel short // We also have issues with recursive calls resulting in an ever-changing result. Constraining to the result of a constraint should yield the original result. // Thus we look for dimensions that are one pixel shy of the max value and bump them up // Note: $did_width means it is possible $smaller_ratio == $width_ratio. if ( $did_width && $w == $max_width - 1 ) { $w = $max_width; // Round it up } // Note: $did_height means it is possible $smaller_ratio == $height_ratio. if ( $did_height && $h == $max_height - 1 ) { $h = $max_height; // Round it up } /** * Filter dimensions to constrain down-sampled images to. * * @since 4.1.0 * * @param array $dimensions The image width and height. * @param int $current_width The current width of the image. * @param int $current_height The current height of the image. * @param int $max_width The maximum width permitted. * @param int $max_height The maximum height permitted. */ return apply_filters( 'wp_constrain_dimensions', array( $w, $h ), $current_width, $current_height, $max_width, $max_height ); } /** * Retrieves calculated resize dimensions for use in WP_Image_Editor. * * Calculates dimensions and coordinates for a resized image that fits * within a specified width and height. * * Cropping behavior is dependent on the value of $crop: * 1. If false (default), images will not be cropped. * 2. If an array in the form of array( x_crop_position, y_crop_position ): * - x_crop_position accepts 'left' 'center', or 'right'. * - y_crop_position accepts 'top', 'center', or 'bottom'. * Images will be cropped to the specified dimensions within the defined crop area. * 3. If true, images will be cropped to the specified dimensions using center positions. * * @since 2.5.0 * * @param int $orig_w Original width in pixels. * @param int $orig_h Original height in pixels. * @param int $dest_w New width in pixels. * @param int $dest_h New height in pixels. * @param bool|array $crop Optional. Whether to crop image to specified width and height or resize. * An array can specify positioning of the crop area. Default false. * @return false|array False on failure. Returned array matches parameters for `imagecopyresampled()`. */ function image_resize_dimensions( $orig_w, $orig_h, $dest_w, $dest_h, $crop = false ) { if ($orig_w <= 0 || $orig_h <= 0) return false; // at least one of dest_w or dest_h must be specific if ($dest_w <= 0 && $dest_h <= 0) return false; /** * Filter whether to preempt calculating the image resize dimensions. * * Passing a non-null value to the filter will effectively short-circuit * image_resize_dimensions(), returning that value instead. * * @since 3.4.0 * * @param null|mixed $null Whether to preempt output of the resize dimensions. * @param int $orig_w Original width in pixels. * @param int $orig_h Original height in pixels. * @param int $dest_w New width in pixels. * @param int $dest_h New height in pixels. * @param bool|array $crop Whether to crop image to specified width and height or resize. * An array can specify positioning of the crop area. Default false. */ $output = apply_filters( 'image_resize_dimensions', null, $orig_w, $orig_h, $dest_w, $dest_h, $crop ); if ( null !== $output ) return $output; if ( $crop ) { // crop the largest possible portion of the original image that we can size to $dest_w x $dest_h $aspect_ratio = $orig_w / $orig_h; $new_w = min($dest_w, $orig_w); $new_h = min($dest_h, $orig_h); if ( ! $new_w ) { $new_w = (int) round( $new_h * $aspect_ratio ); } if ( ! $new_h ) { $new_h = (int) round( $new_w / $aspect_ratio ); } $size_ratio = max($new_w / $orig_w, $new_h / $orig_h); $crop_w = round($new_w / $size_ratio); $crop_h = round($new_h / $size_ratio); if ( ! is_array( $crop ) || count( $crop ) !== 2 ) { $crop = array( 'center', 'center' ); } list( $x, $y ) = $crop; if ( 'left' === $x ) { $s_x = 0; } elseif ( 'right' === $x ) { $s_x = $orig_w - $crop_w; } else { $s_x = floor( ( $orig_w - $crop_w ) / 2 ); } if ( 'top' === $y ) { $s_y = 0; } elseif ( 'bottom' === $y ) { $s_y = $orig_h - $crop_h; } else { $s_y = floor( ( $orig_h - $crop_h ) / 2 ); } } else { // don't crop, just resize using $dest_w x $dest_h as a maximum bounding box $crop_w = $orig_w; $crop_h = $orig_h; $s_x = 0; $s_y = 0; list( $new_w, $new_h ) = wp_constrain_dimensions( $orig_w, $orig_h, $dest_w, $dest_h ); } // if the resulting image would be the same size or larger we don't want to resize it if ( $new_w >= $orig_w && $new_h >= $orig_h && $dest_w != $orig_w && $dest_h != $orig_h ) { return false; } // the return array matches the parameters to imagecopyresampled() // int dst_x, int dst_y, int src_x, int src_y, int dst_w, int dst_h, int src_w, int src_h return array( 0, 0, (int) $s_x, (int) $s_y, (int) $new_w, (int) $new_h, (int) $crop_w, (int) $crop_h ); } /** * Resizes an image to make a thumbnail or intermediate size. * * The returned array has the file size, the image width, and image height. The * filter 'image_make_intermediate_size' can be used to hook in and change the * values of the returned array. The only parameter is the resized file path. * * @since 2.5.0 * * @param string $file File path. * @param int $width Image width. * @param int $height Image height. * @param bool $crop Optional. Whether to crop image to specified width and height or resize. * Default false. * @return false|array False, if no image was created. Metadata array on success. */ function image_make_intermediate_size( $file, $width, $height, $crop = false ) { if ( $width || $height ) { $editor = wp_get_image_editor( $file ); if ( is_wp_error( $editor ) || is_wp_error( $editor->resize( $width, $height, $crop ) ) ) return false; $resized_file = $editor->save(); if ( ! is_wp_error( $resized_file ) && $resized_file ) { unset( $resized_file['path'] ); return $resized_file; } } return false; } /** * Retrieves the image's intermediate size (resized) path, width, and height. * * The $size parameter can be an array with the width and height respectively. * If the size matches the 'sizes' metadata array for width and height, then it * will be used. If there is no direct match, then the nearest image size larger * than the specified size will be used. If nothing is found, then the function * will break out and return false. * * The metadata 'sizes' is used for compatible sizes that can be used for the * parameter $size value. * * The url path will be given, when the $size parameter is a string. * * If you are passing an array for the $size, you should consider using * add_image_size() so that a cropped version is generated. It's much more * efficient than having to find the closest-sized image and then having the * browser scale down the image. * * @since 2.5.0 * * @param int $post_id Attachment ID. * @param array|string $size Optional. Image size. Accepts any valid image size, or an array * of width and height values in pixels (in that order). * Default 'thumbnail'. * @return false|array $data { * Array of file relative path, width, and height on success. Additionally includes absolute * path and URL if registered size is passed to $size parameter. False on failure. * * @type string $file Image's path relative to uploads directory * @type int $width Width of image * @type int $height Height of image * @type string $path Optional. Image's absolute filesystem path. Only returned if registered * size is passed to `$size` parameter. * @type string $url Optional. Image's URL. Only returned if registered size is passed to `$size` * parameter. * } */ function image_get_intermediate_size( $post_id, $size = 'thumbnail' ) { if ( !is_array( $imagedata = wp_get_attachment_metadata( $post_id ) ) ) return false; // get the best one for a specified set of dimensions if ( is_array($size) && !empty($imagedata['sizes']) ) { $candidates = array(); foreach ( $imagedata['sizes'] as $_size => $data ) { // If there's an exact match to an existing image size, short circuit. if ( $data['width'] == $size[0] && $data['height'] == $size[1] ) { list( $data['width'], $data['height'] ) = image_constrain_size_for_editor( $data['width'], $data['height'], $size ); /** This filter is documented in wp-includes/media.php */ return apply_filters( 'image_get_intermediate_size', $data, $post_id, $size ); } // If it's not an exact match but it's at least the dimensions requested. if ( $data['width'] >= $size[0] && $data['height'] >= $size[1] ) { $candidates[ $data['width'] * $data['height'] ] = $_size; } } if ( ! empty( $candidates ) ) { // find for the smallest image not smaller than the desired size ksort( $candidates ); foreach ( $candidates as $_size ) { $data = $imagedata['sizes'][$_size]; // Skip images with unexpectedly divergent aspect ratios (crops) // First, we calculate what size the original image would be if constrained to a box the size of the current image in the loop $maybe_cropped = image_resize_dimensions($imagedata['width'], $imagedata['height'], $data['width'], $data['height'], false ); // If the size doesn't match within one pixel, then it is of a different aspect ratio, so we skip it, unless it's the thumbnail size if ( 'thumbnail' != $_size && ( ! $maybe_cropped || ( $maybe_cropped[4] != $data['width'] && $maybe_cropped[4] + 1 != $data['width'] ) || ( $maybe_cropped[5] != $data['height'] && $maybe_cropped[5] + 1 != $data['height'] ) ) ) { continue; } // If we're still here, then we're going to use this size. list( $data['width'], $data['height'] ) = image_constrain_size_for_editor( $data['width'], $data['height'], $size ); /** This filter is documented in wp-includes/media.php */ return apply_filters( 'image_get_intermediate_size', $data, $post_id, $size ); } } } if ( is_array($size) || empty($size) || empty($imagedata['sizes'][$size]) ) return false; $data = $imagedata['sizes'][$size]; // include the full filesystem path of the intermediate file if ( empty($data['path']) && !empty($data['file']) ) { $file_url = wp_get_attachment_url($post_id); $data['path'] = path_join( dirname($imagedata['file']), $data['file'] ); $data['url'] = path_join( dirname($file_url), $data['file'] ); } /** * Filter the output of image_get_intermediate_size() * * @since 4.4.0 * * @see image_get_intermediate_size() * * @param array $data Array of file relative path, width, and height on success. May also include * file absolute path and URL. * @param int $post_id The post_id of the image attachment * @param string|array $size Registered image size or flat array of initially-requested height and width * dimensions (in that order). */ return apply_filters( 'image_get_intermediate_size', $data, $post_id, $size ); } /** * Gets the available intermediate image sizes. * * @since 3.0.0 * * @global array $_wp_additional_image_sizes * * @return array Returns a filtered array of image size strings. */ function get_intermediate_image_sizes() { global $_wp_additional_image_sizes; $image_sizes = array('thumbnail', 'medium', 'large'); // Standard sizes if ( isset( $_wp_additional_image_sizes ) && count( $_wp_additional_image_sizes ) ) $image_sizes = array_merge( $image_sizes, array_keys( $_wp_additional_image_sizes ) ); /** * Filter the list of intermediate image sizes. * * @since 2.5.0 * * @param array $image_sizes An array of intermediate image sizes. Defaults * are 'thumbnail', 'medium', 'large'. */ return apply_filters( 'intermediate_image_sizes', $image_sizes ); } /** * Retrieve an image to represent an attachment. * * A mime icon for files, thumbnail or intermediate size for images. * * The returned array contains four values: the URL of the attachment image src, * the width of the image file, the height of the image file, and a boolean * representing whether the returned array describes an intermediate (generated) * image size or the original, full-sized upload. * * @since 2.5.0 * * @param int $attachment_id Image attachment ID. * @param string|array $size Optional. Image size. Accepts any valid image size, or an array of width * and height values in pixels (in that order). Default 'thumbnail'. * @param bool $icon Optional. Whether the image should be treated as an icon. Default false. * @return false|array Returns an array (url, width, height, is_intermediate), or false, if no image is available. */ function wp_get_attachment_image_src( $attachment_id, $size = 'thumbnail', $icon = false ) { // get a thumbnail or intermediate image if there is one $image = image_downsize( $attachment_id, $size ); if ( ! $image ) { $src = false; if ( $icon && $src = wp_mime_type_icon( $attachment_id ) ) { /** This filter is documented in wp-includes/post-functions.php */ $icon_dir = apply_filters( 'icon_dir', ABSPATH . WPINC . '/images/media' ); $src_file = $icon_dir . '/' . wp_basename( $src ); @list( $width, $height ) = getimagesize( $src_file ); } if ( $src && $width && $height ) { $image = array( $src, $width, $height ); } } /** * Filter the image src result. * * @since 4.3.0 * * @param array|false $image Either array with src, width & height, icon src, or false. * @param int $attachment_id Image attachment ID. * @param string|array $size Size of image. Image size or array of width and height values * (in that order). Default 'thumbnail'. * @param bool $icon Whether the image should be treated as an icon. Default false. */ return apply_filters( 'wp_get_attachment_image_src', $image, $attachment_id, $size, $icon ); } /** * Get an HTML img element representing an image attachment * * While `$size` will accept an array, it is better to register a size with * add_image_size() so that a cropped version is generated. It's much more * efficient than having to find the closest-sized image and then having the * browser scale down the image. * * @since 2.5.0 * * @param int $attachment_id Image attachment ID. * @param string|array $size Optional. Image size. Accepts any valid image size, or an array of width * and height values in pixels (in that order). Default 'thumbnail'. * @param bool $icon Optional. Whether the image should be treated as an icon. Default false. * @param string|array $attr Optional. Attributes for the image markup. Default empty. * @return string HTML img element or empty string on failure. */ function wp_get_attachment_image($attachment_id, $size = 'thumbnail', $icon = false, $attr = '') { $html = ''; $image = wp_get_attachment_image_src($attachment_id, $size, $icon); if ( $image ) { list($src, $width, $height) = $image; $hwstring = image_hwstring($width, $height); $size_class = $size; if ( is_array( $size_class ) ) { $size_class = join( 'x', $size_class ); } $attachment = get_post($attachment_id); $default_attr = array( 'src' => $src, 'class' => "attachment-$size_class size-$size_class", 'alt' => trim(strip_tags( get_post_meta($attachment_id, '_wp_attachment_image_alt', true) )), // Use Alt field first ); if ( empty($default_attr['alt']) ) $default_attr['alt'] = trim(strip_tags( $attachment->post_excerpt )); // If not, Use the Caption if ( empty($default_attr['alt']) ) $default_attr['alt'] = trim(strip_tags( $attachment->post_title )); // Finally, use the title $attr = wp_parse_args( $attr, $default_attr ); // Generate 'srcset' and 'sizes' if not already present. if ( empty( $attr['srcset'] ) ) { $image_meta = wp_get_attachment_metadata( $attachment_id ); if ( is_array( $image_meta ) ) { $size_array = array( absint( $width ), absint( $height ) ); $sources = wp_calculate_image_srcset( $src, $size_array, $image_meta, $attachment_id ); $sizes = wp_get_attachment_image_sizes( $size_array, $image_meta, $attachment_id ); if ( count( $sources ) > 1 && ( $sizes || ! empty( $attr['sizes'] ) ) ) { $attr['srcset'] = wp_image_srcset_attr( $sources, $size_array, $image_meta, $attachment_id ); if ( empty( $attr['sizes'] ) ) { $attr['sizes'] = $sizes; } } } } /** * Filter the list of attachment image attributes. * * @since 2.8.0 * * @param array $attr Attributes for the image markup. * @param WP_Post $attachment Image attachment post. * @param string|array $size Requested size. Image size or array of width and height values * (in that order). Default 'thumbnail'. */ $attr = apply_filters( 'wp_get_attachment_image_attributes', $attr, $attachment, $size ); $attr = array_map( 'esc_attr', $attr ); $html = rtrim(" $value ) { $html .= " $name=" . '"' . $value . '"'; } $html .= ' />'; } return $html; } /** * Get the URL of an image attachment. * * @since 4.4.0 * * @param int $attachment_id Image attachment ID. * @param string|array $size Optional. Image size to retrieve. Accepts any valid image size, or an array * of width and height values in pixels (in that order). Default 'thumbnail'. * @param bool $icon Optional. Whether the image should be treated as an icon. Default false. * @return string|false Attachment URL or false if no image is available. */ function wp_get_attachment_image_url( $attachment_id, $size = 'thumbnail', $icon = false ) { $image = wp_get_attachment_image_src( $attachment_id, $size, $icon ); return isset( $image['0'] ) ? $image['0'] : false; } /** * Private, do not use */ function _wp_upload_dir_baseurl() { static $baseurl = null; if ( ! $baseurl ) { $uploads_dir = wp_upload_dir(); $baseurl = $uploads_dir['baseurl']; } return $baseurl; } /** * Private, do not use */ function _wp_get_image_size_from_meta( $size, $image_meta ) { if ( $size === 'full' ) { return array( absint( $image_meta['width'] ), absint( $image_meta['height'] ), ); } elseif ( ! empty( $image_meta['sizes'][$size] ) ) { return array( absint( $image_meta['sizes'][$size]['width'] ), absint( $image_meta['sizes'][$size]['height'] ), ); } return false; } /** * Retrieves the value for an image attachment's 'srcset' attribute. * * @since 4.4.0 * * @param int $attachment_id Optional. Image attachment ID. * @param array|string $size Image size. Accepts any valid image size, or an array of width and height * values in pixels (in that order). Default 'medium'. * @param array $image_meta Optional. The image meta data as returned by 'wp_get_attachment_metadata()'. * @return string|bool A 'srcset' value string or false. */ function wp_get_attachment_image_srcset( $attachment_id, $size = 'medium', $image_meta = null ) { if ( ! $image = wp_get_attachment_image_src( $attachment_id, $size ) ) { return false; } if ( ! is_array( $image_meta ) ) { $image_meta = get_post_meta( $attachment_id, '_wp_attachment_metadata', true ); } $image_url = $image[0]; $size_array = array( absint( $image[1] ), absint( $image[2] ) ); // Calculate the sources for the 'srcset'. $sources = wp_calculate_image_srcset( $image_url, $size_array, $image_meta, $attachment_id ); // Only return a 'srcset' value if there is more than one source. if ( count( $sources ) < 2 ) { return false; } return wp_image_srcset_attr( $sources, $size_array, $image_meta, $attachment_id ); } /** * A helper function to concatenate and filter the 'srcset' attribute value. * * @since 4.4.0 * * @param array $sources The array containing image sizes data as returned by 'wp_calculate_image_srcset()'. * @param array $size_array Array of width and height values in pixels (in that order). * @param array $image_meta The image meta data as returned by 'wp_get_attachment_metadata()'. * @param int $attachment_id The image attachment ID to pass to the filter. * @return string The 'srcset' attribute value. */ function wp_image_srcset_attr( $sources, $size_array, $image_meta, $attachment_id ) { $srcset = ''; foreach ( $sources as $source ) { $srcset .= $source['url'] . ' ' . $source['value'] . $source['descriptor'] . ', '; } /** * Filter the output of 'wp_image_srcset_attr()'. * * @since 4.4.0 * * @param string $srcset A source set formatted for a 'srcset' attribute. * @param int $attachment_id Image attachment ID. * @param array|string $size Image size. Image size name, or an array of width and height * values in pixels (in that order). * @param array $image_meta The image meta data as returned by 'wp_get_attachment_metadata()'. */ return apply_filters( 'wp_image_srcset', rtrim( $srcset, ', ' ), $attachment_id, $size_array, $image_meta ); } /** * A helper function to calculate the image sources to include in a 'srcset' attribute. * * @since 4.4.0 * * @param string $image_name The file name, path, URL, or partial path or URL, of the image being matched. * @param array $size_array Array of width and height values in pixels (in that order). * @param array $image_meta The image meta data as returned by 'wp_get_attachment_metadata()'. * @param int $attachment_id Optional. The image attachment ID to pass to the filter. * @return array|bool $sources { * Array image candidate values containing a URL, descriptor type, and * descriptor value. False if none exist. * * @type array $values { * @type string $url An image URL. * @type string $descriptor A width or density descriptor used in a 'srcset'. * @type int $value The descriptor value representing a width or * or pixel density. * } * } */ function wp_calculate_image_srcset( $image_name, $size_array, $image_meta, $attachment_id = 0 ) { if ( empty( $image_meta['sizes'] ) ) { return false; } $image_sizes = $image_meta['sizes']; // Get the width and height of the image. $image_width = (int) $size_array[0]; $image_height = (int) $size_array[1]; // Bail early if error/no width. if ( $image_width < 1 ) { return false; } // Add full size to the '$img_sizes' array. $image_sizes['full'] = array( 'width' => $image_meta['width'], 'height' => $image_meta['height'], 'file' => wp_basename( $image_meta['file'] ), ); $image_baseurl = _wp_upload_dir_baseurl(); $dirname = dirname( $image_meta['file'] ); if ( $dirname !== '.' ) { $image_baseurl = path_join( $image_baseurl, $dirname ); } // Calculate the image aspect ratio. $image_ratio = $image_height / $image_width; /* * Images that have been edited in WordPress after being uploaded will * contain a unique hash. Look for that hash and use it later to filter * out images that are leftovers from previous versions. */ $image_edited = preg_match( '/-e[0-9]{13}/', $image_name, $image_edit_hash ); /** * Filter the maximum image width to be included in a 'srcset' attribute. * * @since 4.4.0 * * @param int $max_width The maximum image width to be included in the 'srcset'. Default '1600'. * @param array $size_array Array of width and height values in pixels (in that order). */ $max_srcset_image_width = apply_filters( 'max_srcset_image_width', 1600, $size_array ); // Array to hold URL candidates. $sources = array(); /* * Loop through available images. Only use images that are resized * versions of the same edit. */ foreach ( $image_sizes as $image ) { // Filter out images that are from previous edits. if ( $image_edited && ! strpos( $image['file'], $image_edit_hash[0] ) ) { continue; } // Filter out images that are wider than '$max_srcset_image_width'. if ( $max_srcset_image_width && $image['width'] > $max_srcset_image_width ) { continue; } $candidate_url = $image['file']; // Calculate the new image ratio. if ( $image['width'] ) { $image_ratio_compare = $image['height'] / $image['width']; } else { $image_ratio_compare = 0; } // If the new ratio differs by less than 0.01, use it. if ( abs( $image_ratio - $image_ratio_compare ) < 0.01 && ! array_key_exists( $candidate_url, $sources ) ) { // Add the URL, descriptor, and value to the sources array to be returned. $sources[ $image['width'] ] = array( 'url' => path_join( $image_baseurl, $candidate_url ), 'descriptor' => 'w', 'value' => $image['width'], ); } } /** * Filter the output of 'wp_calculate_image_srcset()'. * * @since 4.4.0 * * @param array $sources An array of image URLs and widths. * @param int $attachment_id Image attachment ID. * @param array|string $size Image size. Image size name, or an array of width and height * values in pixels (in that order). * @param array $image_meta The image meta data as returned by 'wp_get_attachment_metadata()'. */ return apply_filters( 'wp_calculate_image_srcset', array_values( $sources ), $attachment_id, $size_array, $image_meta ); } /** * Create 'sizes' attribute value for an image. * * @since 4.4.0 * * @param array|string $size Image size. Accepts any valid image size name ('thumbnail', 'medium', etc.), * or an array of width and height values in pixels (in that order). * @param array $image_meta Optional. The image meta data as returned by 'wp_get_attachment_metadata()'. * @param int $attachment_id Optional. Image attachment ID. Either `$image_meta` or `$attachment_id` is needed * when using the image size name as argument for `$size`. * * @return string|bool A valid source size value for use in a 'sizes' attribute or false. */ function wp_get_attachment_image_sizes( $size, $image_meta = null, $attachment_id = 0 ) { $width = 0; if ( is_numeric( $size ) ) { $width = absint( $size ); } elseif ( is_array( $size ) ) { $width = absint( $size[0] ); } elseif ( is_string( $size ) ) { if ( ! $image_meta && $attachment_id ) { $image_meta = wp_get_attachment_metadata( $attachment_id ); } if ( is_array( $image_meta ) ) { $width = _wp_get_image_size_from_meta( $size, $image_meta ); if ( $width ) { $width = absint( $width[0] ); } } } if ( ! $width ) { return false; } // Setup the default 'sizes' attribute. $sizes = sprintf( '(max-width: %1$dpx) 100vw, %1$dpx', $width ); /** * Filter the output of 'wp_get_attachment_image_sizes()'. * * @since 4.4.0 * * @param string $sizes A source size value for use in a 'sizes' attribute. * @param array|string $size Image size. Image size name, or an array of width and height * values in pixels (in that order). * @param array $image_meta The image meta data as returned by 'wp_get_attachment_metadata()'. * @param int $attachment_id Image attachment ID of the original image. */ return apply_filters( 'wp_get_attachment_image_sizes', $sizes, $size, $image_meta, $attachment_id ); } /** * Filters 'img' elements in post content to add 'srcset' and 'sizes' attributes. * * @since 4.4.0 * * @see 'wp_image_add_srcset_and_sizes()' * * @param string $content The raw post content to be filtered. * @return string Converted content with 'srcset' and 'sizes' attributes added to images. */ function wp_make_content_images_responsive( $content ) { $images = get_media_embedded_in_content( $content, 'img' ); $selected_images = $attachment_ids = array(); foreach( $images as $image ) { if ( false === strpos( $image, ' srcset="' ) && preg_match( '/wp-image-([0-9]+)/i', $image, $class_id ) && ( $attachment_id = absint( $class_id[1] ) ) ) { /* * If exactly the same image tag is used more than once, overwrite it. * All identical tags will be replaced later with 'str_replace()'. */ $selected_images[ $image ] = $attachment_id; // Overwrite the ID when the same image is included more than once. $attachment_ids[ $attachment_id ] = true; } } if ( count( $attachment_ids ) > 1 ) { /* * Warm object cache for use with 'get_post_meta()'. * * To avoid making a database call for each image, a single query * warms the object cache with the meta information for all images. */ update_meta_cache( 'post', array_keys( $attachment_ids ) ); } foreach ( $selected_images as $image => $attachment_id ) { $image_meta = get_post_meta( $attachment_id, '_wp_attachment_metadata', true ); $content = str_replace( $image, wp_image_add_srcset_and_sizes( $image, $image_meta, $attachment_id ), $content ); } return $content; } /** * Adds 'srcset' and 'sizes' attributes to an existing 'img' element. * * @since 4.4.0 * * @see 'wp_get_attachment_image_srcset()' * @see 'wp_get_attachment_image_sizes()' * * @param string $image An HTML 'img' element to be filtered. * @param array $image_meta The image meta data as returned by 'wp_get_attachment_metadata()'. * @param int $attachment_id Image attachment ID. * @return string Converted 'img' element with 'srcset' and 'sizes' attributes added. */ function wp_image_add_srcset_and_sizes( $image, $image_meta, $attachment_id ) { // Ensure the image meta exists. if ( empty( $image_meta['sizes'] ) ) { return $image; } $src = preg_match( '/src="([^"]+)"/', $image, $match_src ) ? $match_src[1] : ''; list( $src ) = explode( '?', $src ); // Return early if we couldn't get the image source. if ( ! $src ) { return $image; } // Bail early if an image has been inserted and later edited. if ( preg_match( '/-e[0-9]{13}/', $image_meta['file'], $img_edit_hash ) && strpos( wp_basename( $src ), $img_edit_hash[0] ) === false ) { return $image; } $width = preg_match( '/ width="([0-9]+)"/', $image, $match_width ) ? (int) $match_width[1] : 0; $height = preg_match( '/ height="([0-9]+)"/', $image, $match_height ) ? (int) $match_height[1] : 0; if ( ! $width || ! $height ) { /* * If attempts to parse the size value failed, attempt to use the image meta data to match * the image file name from 'src' against the available sizes for an attachment. */ $image_filename = wp_basename( $src ); if ( $image_filename === wp_basename( $image_meta['file'] ) ) { $width = (int) $image_meta['width']; $height = (int) $image_meta['height']; } else { foreach( $image_meta['sizes'] as $image_size_data ) { if ( $image_filename === $image_size_data['file'] ) { $width = (int) $image_size_data['width']; $height = (int) $image_size_data['height']; break; } } } } if ( ! $width || ! $height ) { return $image; } $size_array = array( $width, $height ); $sources = wp_calculate_image_srcset( $src, $size_array, $image_meta, $attachment_id ); $srcset = $sizes = ''; // Only calculate 'srcset' and 'sizes' values if there is more than one source. if ( count( $sources ) > 1 ) { $srcset = wp_image_srcset_attr( $sources, $size_array, $image_meta, $attachment_id ); $sizes = wp_get_attachment_image_sizes( $size_array, $image_meta, $attachment_id ); } if ( $srcset && $sizes ) { // Format the 'srcset' and 'sizes' string and escape attributes. $srcset_and_sizes = sprintf( ' srcset="%s" sizes="%s"', esc_attr( $srcset ), esc_attr( $sizes ) ); // Add 'srcset' and 'sizes' attributes to the image markup. $image = preg_replace( '/]+?)[\/ ]*>/', '', $image ); } return $image; } /** * Adds a 'wp-post-image' class to post thumbnails. Internal use only. * * Uses the 'begin_fetch_post_thumbnail_html' and 'end_fetch_post_thumbnail_html' action hooks to * dynamically add/remove itself so as to only filter post thumbnails. * * @ignore * @since 2.9.0 * * @param array $attr Thumbnail attributes including src, class, alt, title. * @return array Modified array of attributes including the new 'wp-post-image' class. */ function _wp_post_thumbnail_class_filter( $attr ) { $attr['class'] .= ' wp-post-image'; return $attr; } /** * Adds '_wp_post_thumbnail_class_filter' callback to the 'wp_get_attachment_image_attributes' * filter hook. Internal use only. * * @ignore * @since 2.9.0 * * @param array $attr Thumbnail attributes including src, class, alt, title. */ function _wp_post_thumbnail_class_filter_add( $attr ) { add_filter( 'wp_get_attachment_image_attributes', '_wp_post_thumbnail_class_filter' ); } /** * Removes the '_wp_post_thumbnail_class_filter' callback from the 'wp_get_attachment_image_attributes' * filter hook. Internal use only. * * @ignore * @since 2.9.0 * * @param array $attr Thumbnail attributes including src, class, alt, title. */ function _wp_post_thumbnail_class_filter_remove( $attr ) { remove_filter( 'wp_get_attachment_image_attributes', '_wp_post_thumbnail_class_filter' ); } add_shortcode('wp_caption', 'img_caption_shortcode'); add_shortcode('caption', 'img_caption_shortcode'); /** * Builds the Caption shortcode output. * * Allows a plugin to replace the content that would otherwise be returned. The * filter is 'img_caption_shortcode' and passes an empty string, the attr * parameter and the content parameter values. * * The supported attributes for the shortcode are 'id', 'align', 'width', and * 'caption'. * * @since 2.6.0 * * @param array $attr { * Attributes of the caption shortcode. * * @type string $id ID of the div element for the caption. * @type string $align Class name that aligns the caption. Default 'alignnone'. Accepts 'alignleft', * 'aligncenter', alignright', 'alignnone'. * @type int $width The width of the caption, in pixels. * @type string $caption The caption text. * @type string $class Additional class name(s) added to the caption container. * } * @param string $content Shortcode content. * @return string HTML content to display the caption. */ function img_caption_shortcode( $attr, $content = null ) { // New-style shortcode with the caption inside the shortcode with the link and image tags. if ( ! isset( $attr['caption'] ) ) { if ( preg_match( '#((?:]+>\s*)?]+>(?:\s*)?)(.*)#is', $content, $matches ) ) { $content = $matches[1]; $attr['caption'] = trim( $matches[2] ); } } elseif ( strpos( $attr['caption'], '<' ) !== false ) { $attr['caption'] = wp_kses( $attr['caption'], 'post' ); } /** * Filter the default caption shortcode output. * * If the filtered output isn't empty, it will be used instead of generating * the default caption template. * * @since 2.6.0 * * @see img_caption_shortcode() * * @param string $output The caption output. Default empty. * @param array $attr Attributes of the caption shortcode. * @param string $content The image element, possibly wrapped in a hyperlink. */ $output = apply_filters( 'img_caption_shortcode', '', $attr, $content ); if ( $output != '' ) return $output; $atts = shortcode_atts( array( 'id' => '', 'align' => 'alignnone', 'width' => '', 'caption' => '', 'class' => '', ), $attr, 'caption' ); $atts['width'] = (int) $atts['width']; if ( $atts['width'] < 1 || empty( $atts['caption'] ) ) return $content; if ( ! empty( $atts['id'] ) ) $atts['id'] = 'id="' . esc_attr( sanitize_html_class( $atts['id'] ) ) . '" '; $class = trim( 'wp-caption ' . $atts['align'] . ' ' . $atts['class'] ); $html5 = current_theme_supports( 'html5', 'caption' ); // HTML5 captions never added the extra 10px to the image width $width = $html5 ? $atts['width'] : ( 10 + $atts['width'] ); /** * Filter the width of an image's caption. * * By default, the caption is 10 pixels greater than the width of the image, * to prevent post content from running up against a floated image. * * @since 3.7.0 * * @see img_caption_shortcode() * * @param int $width Width of the caption in pixels. To remove this inline style, * return zero. * @param array $atts Attributes of the caption shortcode. * @param string $content The image element, possibly wrapped in a hyperlink. */ $caption_width = apply_filters( 'img_caption_shortcode_width', $width, $atts, $content ); $style = ''; if ( $caption_width ) $style = 'style="width: ' . (int) $caption_width . 'px" '; $html = ''; if ( $html5 ) { $html = '
' . do_shortcode( $content ) . '
' . $atts['caption'] . '
'; } else { $html = '
' . do_shortcode( $content ) . '

' . $atts['caption'] . '

'; } return $html; } add_shortcode('gallery', 'gallery_shortcode'); /** * Builds the Gallery shortcode output. * * This implements the functionality of the Gallery Shortcode for displaying * WordPress images on a post. * * @since 2.5.0 * * @staticvar int $instance * * @param array $attr { * Attributes of the gallery shortcode. * * @type string $order Order of the images in the gallery. Default 'ASC'. Accepts 'ASC', 'DESC'. * @type string $orderby The field to use when ordering the images. Default 'menu_order ID'. * Accepts any valid SQL ORDERBY statement. * @type int $id Post ID. * @type string $itemtag HTML tag to use for each image in the gallery. * Default 'dl', or 'figure' when the theme registers HTML5 gallery support. * @type string $icontag HTML tag to use for each image's icon. * Default 'dt', or 'div' when the theme registers HTML5 gallery support. * @type string $captiontag HTML tag to use for each image's caption. * Default 'dd', or 'figcaption' when the theme registers HTML5 gallery support. * @type int $columns Number of columns of images to display. Default 3. * @type string|array $size Size of the images to display. Accepts any valid image size, or an array of width * and height values in pixels (in that order). Default 'thumbnail'. * @type string $ids A comma-separated list of IDs of attachments to display. Default empty. * @type string $include A comma-separated list of IDs of attachments to include. Default empty. * @type string $exclude A comma-separated list of IDs of attachments to exclude. Default empty. * @type string $link What to link each image to. Default empty (links to the attachment page). * Accepts 'file', 'none'. * } * @return string HTML content to display gallery. */ function gallery_shortcode( $attr ) { $post = get_post(); static $instance = 0; $instance++; if ( ! empty( $attr['ids'] ) ) { // 'ids' is explicitly ordered, unless you specify otherwise. if ( empty( $attr['orderby'] ) ) { $attr['orderby'] = 'post__in'; } $attr['include'] = $attr['ids']; } /** * Filter the default gallery shortcode output. * * If the filtered output isn't empty, it will be used instead of generating * the default gallery template. * * @since 2.5.0 * @since 4.2.0 The `$instance` parameter was added. * * @see gallery_shortcode() * * @param string $output The gallery output. Default empty. * @param array $attr Attributes of the gallery shortcode. * @param int $instance Unique numeric ID of this gallery shortcode instance. */ $output = apply_filters( 'post_gallery', '', $attr, $instance ); if ( $output != '' ) { return $output; } $html5 = current_theme_supports( 'html5', 'gallery' ); $atts = shortcode_atts( array( 'order' => 'ASC', 'orderby' => 'menu_order ID', 'id' => $post ? $post->ID : 0, 'itemtag' => $html5 ? 'figure' : 'dl', 'icontag' => $html5 ? 'div' : 'dt', 'captiontag' => $html5 ? 'figcaption' : 'dd', 'columns' => 3, 'size' => 'thumbnail', 'include' => '', 'exclude' => '', 'link' => '' ), $attr, 'gallery' ); $id = intval( $atts['id'] ); if ( ! empty( $atts['include'] ) ) { $_attachments = get_posts( array( 'include' => $atts['include'], 'post_status' => 'inherit', 'post_type' => 'attachment', 'post_mime_type' => 'image', 'order' => $atts['order'], 'orderby' => $atts['orderby'] ) ); $attachments = array(); foreach ( $_attachments as $key => $val ) { $attachments[$val->ID] = $_attachments[$key]; } } elseif ( ! empty( $atts['exclude'] ) ) { $attachments = get_children( array( 'post_parent' => $id, 'exclude' => $atts['exclude'], 'post_status' => 'inherit', 'post_type' => 'attachment', 'post_mime_type' => 'image', 'order' => $atts['order'], 'orderby' => $atts['orderby'] ) ); } else { $attachments = get_children( array( 'post_parent' => $id, 'post_status' => 'inherit', 'post_type' => 'attachment', 'post_mime_type' => 'image', 'order' => $atts['order'], 'orderby' => $atts['orderby'] ) ); } if ( empty( $attachments ) ) { return ''; } if ( is_feed() ) { $output = "\n"; foreach ( $attachments as $att_id => $attachment ) { $output .= wp_get_attachment_link( $att_id, $atts['size'], true ) . "\n"; } return $output; } $itemtag = tag_escape( $atts['itemtag'] ); $captiontag = tag_escape( $atts['captiontag'] ); $icontag = tag_escape( $atts['icontag'] ); $valid_tags = wp_kses_allowed_html( 'post' ); if ( ! isset( $valid_tags[ $itemtag ] ) ) { $itemtag = 'dl'; } if ( ! isset( $valid_tags[ $captiontag ] ) ) { $captiontag = 'dd'; } if ( ! isset( $valid_tags[ $icontag ] ) ) { $icontag = 'dt'; } $columns = intval( $atts['columns'] ); $itemwidth = $columns > 0 ? floor(100/$columns) : 100; $float = is_rtl() ? 'right' : 'left'; $selector = "gallery-{$instance}"; $gallery_style = ''; /** * Filter whether to print default gallery styles. * * @since 3.1.0 * * @param bool $print Whether to print default gallery styles. * Defaults to false if the theme supports HTML5 galleries. * Otherwise, defaults to true. */ if ( apply_filters( 'use_default_gallery_style', ! $html5 ) ) { $gallery_style = " \n\t\t"; } $size_class = sanitize_html_class( $atts['size'] ); $gallery_div = "\n"; return $output; } /** * Outputs the templates used by playlists. * * @since 3.9.0 */ function wp_underscore_playlist_templates() { ?> 'audio', 'order' => 'ASC', 'orderby' => 'menu_order ID', 'id' => $post ? $post->ID : 0, 'include' => '', 'exclude' => '', 'style' => 'light', 'tracklist' => true, 'tracknumbers' => true, 'images' => true, 'artists' => true ), $attr, 'playlist' ); $id = intval( $atts['id'] ); if ( $atts['type'] !== 'audio' ) { $atts['type'] = 'video'; } $args = array( 'post_status' => 'inherit', 'post_type' => 'attachment', 'post_mime_type' => $atts['type'], 'order' => $atts['order'], 'orderby' => $atts['orderby'] ); if ( ! empty( $atts['include'] ) ) { $args['include'] = $atts['include']; $_attachments = get_posts( $args ); $attachments = array(); foreach ( $_attachments as $key => $val ) { $attachments[$val->ID] = $_attachments[$key]; } } elseif ( ! empty( $atts['exclude'] ) ) { $args['post_parent'] = $id; $args['exclude'] = $atts['exclude']; $attachments = get_children( $args ); } else { $args['post_parent'] = $id; $attachments = get_children( $args ); } if ( empty( $attachments ) ) { return ''; } if ( is_feed() ) { $output = "\n"; foreach ( $attachments as $att_id => $attachment ) { $output .= wp_get_attachment_link( $att_id ) . "\n"; } return $output; } $outer = 22; // default padding and border of wrapper $default_width = 640; $default_height = 360; $theme_width = empty( $content_width ) ? $default_width : ( $content_width - $outer ); $theme_height = empty( $content_width ) ? $default_height : round( ( $default_height * $theme_width ) / $default_width ); $data = array( 'type' => $atts['type'], // don't pass strings to JSON, will be truthy in JS 'tracklist' => wp_validate_boolean( $atts['tracklist'] ), 'tracknumbers' => wp_validate_boolean( $atts['tracknumbers'] ), 'images' => wp_validate_boolean( $atts['images'] ), 'artists' => wp_validate_boolean( $atts['artists'] ), ); $tracks = array(); foreach ( $attachments as $attachment ) { $url = wp_get_attachment_url( $attachment->ID ); $ftype = wp_check_filetype( $url, wp_get_mime_types() ); $track = array( 'src' => $url, 'type' => $ftype['type'], 'title' => $attachment->post_title, 'caption' => $attachment->post_excerpt, 'description' => $attachment->post_content ); $track['meta'] = array(); $meta = wp_get_attachment_metadata( $attachment->ID ); if ( ! empty( $meta ) ) { foreach ( wp_get_attachment_id3_keys( $attachment ) as $key => $label ) { if ( ! empty( $meta[ $key ] ) ) { $track['meta'][ $key ] = $meta[ $key ]; } } if ( 'video' === $atts['type'] ) { if ( ! empty( $meta['width'] ) && ! empty( $meta['height'] ) ) { $width = $meta['width']; $height = $meta['height']; $theme_height = round( ( $height * $theme_width ) / $width ); } else { $width = $default_width; $height = $default_height; } $track['dimensions'] = array( 'original' => compact( 'width', 'height' ), 'resized' => array( 'width' => $theme_width, 'height' => $theme_height ) ); } } if ( $atts['images'] ) { $thumb_id = get_post_thumbnail_id( $attachment->ID ); if ( ! empty( $thumb_id ) ) { list( $src, $width, $height ) = wp_get_attachment_image_src( $thumb_id, 'full' ); $track['image'] = compact( 'src', 'width', 'height' ); list( $src, $width, $height ) = wp_get_attachment_image_src( $thumb_id, 'thumbnail' ); $track['thumb'] = compact( 'src', 'width', 'height' ); } else { $src = wp_mime_type_icon( $attachment->ID ); $width = 48; $height = 64; $track['image'] = compact( 'src', 'width', 'height' ); $track['thumb'] = compact( 'src', 'width', 'height' ); } } $tracks[] = $track; } $data['tracks'] = $tracks; $safe_type = esc_attr( $atts['type'] ); $safe_style = esc_attr( $atts['style'] ); ob_start(); if ( 1 === $instance ) { /** * Print and enqueue playlist scripts, styles, and JavaScript templates. * * @since 3.9.0 * * @param string $type Type of playlist. Possible values are 'audio' or 'video'. * @param string $style The 'theme' for the playlist. Core provides 'light' and 'dark'. */ do_action( 'wp_playlist_scripts', $atts['type'], $atts['style'] ); } ?>
< controls="controls" preload="none" width="">>
%1$s', esc_url( $url ) ), $url ); } /** * Returns a filtered list of WP-supported audio formats. * * @since 3.6.0 * * @return array Supported audio formats. */ function wp_get_audio_extensions() { /** * Filter the list of supported audio formats. * * @since 3.6.0 * * @param array $extensions An array of support audio formats. Defaults are * 'mp3', 'ogg', 'wma', 'm4a', 'wav'. */ return apply_filters( 'wp_audio_extensions', array( 'mp3', 'ogg', 'wma', 'm4a', 'wav' ) ); } /** * Returns useful keys to use to lookup data from an attachment's stored metadata. * * @since 3.9.0 * * @param WP_Post $attachment The current attachment, provided for context. * @param string $context Optional. The context. Accepts 'edit', 'display'. Default 'display'. * @return array Key/value pairs of field keys to labels. */ function wp_get_attachment_id3_keys( $attachment, $context = 'display' ) { $fields = array( 'artist' => __( 'Artist' ), 'album' => __( 'Album' ), ); if ( 'display' === $context ) { $fields['genre'] = __( 'Genre' ); $fields['year'] = __( 'Year' ); $fields['length_formatted'] = _x( 'Length', 'video or audio' ); } elseif ( 'js' === $context ) { $fields['bitrate'] = __( 'Bitrate' ); $fields['bitrate_mode'] = __( 'Bitrate Mode' ); } /** * Filter the editable list of keys to look up data from an attachment's metadata. * * @since 3.9.0 * * @param array $fields Key/value pairs of field keys to labels. * @param WP_Post $attachment Attachment object. * @param string $context The context. Accepts 'edit', 'display'. Default 'display'. */ return apply_filters( 'wp_get_attachment_id3_keys', $fields, $attachment, $context ); } /** * Builds the Audio shortcode output. * * This implements the functionality of the Audio Shortcode for displaying * WordPress mp3s in a post. * * @since 3.6.0 * * @staticvar int $instance * * @param array $attr { * Attributes of the audio shortcode. * * @type string $src URL to the source of the audio file. Default empty. * @type string $loop The 'loop' attribute for the `