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; } 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 Optional. Width attribute value. * @param int|string $height Optional. Height attribute value. * @return string HTML attributes for width and, or height. */ function image_hwstring($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 * @uses apply_filters() Calls 'image_downsize' on $id and $size to provide * resize services. * * @param int $id Attachment ID for image. * @param array|string $size Optional, default is 'medium'. Size of image, either array or string. * @return bool|array False on failure, array on success. */ function image_downsize($id, $size = 'medium') { if ( !wp_attachment_is_image($id) ) return false; // plugins can use this to provide resize services 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 * * @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 height and width or resize. * An array can specify positioning of the crop area. Default false. * @return bool|array False, if no image was created. Metadata array on success. */ 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 * * @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 * * @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 height and width or resize. * An array can specify positioning of the crop area. Default false. * @return bool|array False, if no image was created. Metadata array on success. */ function set_post_thumbnail_size( $width = 0, $height = 0, $crop = false ) { add_image_size( 'post-thumbnail', $width, $height, $crop ); } /** * An 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 * * @uses apply_filters() The 'get_image_tag_class' filter is the IMG element * class attribute. * @uses apply_filters() The 'get_image_tag' filter is the full IMG element with * all attributes. * * @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 $size Optional. Default is 'medium'. * @return string HTML IMG element for given image attachment */ function get_image_tag($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; $class = apply_filters('get_image_tag_class', $class, $id, $align, $size); $html = '' . esc_attr($alt) . ''; $html = apply_filters( 'get_image_tag', $html, $id, $alt, $title, $align, $size ); return $html; } /** * Calculates the new dimensions for a downsampled 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. Maximum wanted width. * @param int $max_height Optional. Maximum wanted height. * @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 and !$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 ( intval( $current_width * $larger_ratio ) > $max_width || intval( $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, intval( $current_width * $ratio ) ); $h = max ( 1, intval( $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 if ( $did_width && $w == $max_width - 1 ) $w = $max_width; // Round it up if ( $did_height && $h == $max_height - 1 ) $h = $max_height; // Round it up return array( $w, $h ); } /** * Retrieve 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 * @uses apply_filters() Calls 'image_resize_dimensions' on $orig_w, $orig_h, $dest_w, * $dest_h and $crop to provide custom 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 $crop Optional. Whether to crop image to specified height and width or resize. * An array can specify positioning of the crop area. Default false. * @return bool|array False on failure. Returned array matches parameters for `imagecopyresampled()`. */ function image_resize_dimensions($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; // plugins can use this to provide custom resize dimensions $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 ) { $new_w = intval($new_h * $aspect_ratio); } if ( !$new_h ) { $new_h = intval($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 ) 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 ); } /** * Resize 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, default is false. Whether to crop image to specified height and width or resize. * @return bool|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; } /** * Retrieve 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 * @see add_image_size() * * @param int $post_id Attachment ID for image. * @param array|string $size Optional, default is 'thumbnail'. Size of image, either array or string. * @return bool|array False on failure or array of file path, width, and height on success. */ function image_get_intermediate_size($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']) ) { foreach ( $imagedata['sizes'] as $_size => $data ) { // already cropped to width or height; so use this size if ( ( $data['width'] == $size[0] && $data['height'] <= $size[1] ) || ( $data['height'] == $size[1] && $data['width'] <= $size[0] ) ) { $file = $data['file']; list($width, $height) = image_constrain_size_for_editor( $data['width'], $data['height'], $size ); return compact( 'file', 'width', 'height' ); } // add to lookup table: area => size $areas[$data['width'] * $data['height']] = $_size; } if ( !$size || !empty($areas) ) { // find for the smallest image not smaller than the desired size ksort($areas); foreach ( $areas as $_size ) { $data = $imagedata['sizes'][$_size]; if ( $data['width'] >= $size[0] || $data['height'] >= $size[1] ) { // 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 $file = $data['file']; list($width, $height) = image_constrain_size_for_editor( $data['width'], $data['height'], $size ); return compact( 'file', 'width', 'height' ); } } } } if ( is_array($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'] ); } return $data; } /** * Get the available image sizes * @since 3.0.0 * @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 ) ); 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. * * @since 2.5.0 * * @param int $attachment_id Image attachment ID. * @param string $size Optional, default is 'thumbnail'. * @param bool $icon Optional, default is false. Whether it is an icon. * @return bool|array Returns an array (url, width, height), or false, if no image is available. */ function wp_get_attachment_image_src($attachment_id, $size='thumbnail', $icon = false) { // get a thumbnail or intermediate image if there is one if ( $image = image_downsize($attachment_id, $size) ) return $image; $src = false; if ( $icon && $src = wp_mime_type_icon($attachment_id) ) { $icon_dir = apply_filters( 'icon_dir', ABSPATH . WPINC . '/images/crystal' ); $src_file = $icon_dir . '/' . wp_basename($src); @list($width, $height) = getimagesize($src_file); } if ( $src && $width && $height ) return array( $src, $width, $height ); return false; } /** * 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. * * @see add_image_size() * @uses apply_filters() Calls 'wp_get_attachment_image_attributes' hook on attributes array * @uses wp_get_attachment_image_src() Gets attachment file URL and dimensions * @since 2.5.0 * * @param int $attachment_id Image attachment ID. * @param string $size Optional, default is 'thumbnail'. * @param bool $icon Optional, default is false. Whether it is an icon. * @param mixed $attr Optional, attributes for the image markup. * @return string HTML img element or empty string on failure. */ function wp_get_attachment_image($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, $height); if ( is_array($size) ) $size = join('x', $size); $attachment = get_post($attachment_id); $default_attr = array( 'src' => $src, 'class' => "attachment-$size", '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); $attr = apply_filters( 'wp_get_attachment_image_attributes', $attr, $attachment ); $attr = array_map( 'esc_attr', $attr ); $html = rtrim(" $value ) { $html .= " $name=" . '"' . $value . '"'; } $html .= ' />'; } return $html; } /** * Adds a 'wp-post-image' class to post thumbnails * 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 * * @since 2.9.0 * @param array $attr Attributes including src, class, alt, title * @return array */ function _wp_post_thumbnail_class_filter( $attr ) { $attr['class'] .= ' wp-post-image'; return $attr; } /** * Adds _wp_post_thumbnail_class_filter to the wp_get_attachment_image_attributes filter * * @since 2.9.0 */ function _wp_post_thumbnail_class_filter_add( $attr ) { add_filter( 'wp_get_attachment_image_attributes', '_wp_post_thumbnail_class_filter' ); } /** * Removes _wp_post_thumbnail_class_filter from the wp_get_attachment_image_attributes filter * * @since 2.9.0 */ 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'); /** * The Caption shortcode. * * 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 Optional. 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] ); } } /** * 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( $atts['id'] ) . '" '; $caption_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 $caption_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', $caption_width, $atts, $content ); $style = ''; if ( $caption_width ) $style = 'style="width: ' . (int) $caption_width . 'px" '; $class = trim( 'wp-caption ' . $atts['align'] . ' ' . $atts['class'] ); return '
' . do_shortcode( $content ) . '

' . $atts['caption'] . '

'; } add_shortcode('gallery', 'gallery_shortcode'); /** * The Gallery shortcode. * * This implements the functionality of the Gallery Shortcode for displaying * WordPress images on a post. * * @since 2.5.0 * * @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 $size Size of the images to display. 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 * * @see gallery_shortcode() * * @param string $output The gallery output. Default empty. * @param array $attr Attributes of the gallery shortcode. */ $output = apply_filters( 'post_gallery', '', $attr ); if ( $output != '' ) return $output; // We're trusting author input, so let's at least make sure it looks like a valid orderby statement if ( isset( $attr['orderby'] ) ) { $attr['orderby'] = sanitize_sql_orderby( $attr['orderby'] ); if ( !$attr['orderby'] ) unset( $attr['orderby'] ); } $html5 = current_theme_supports( 'html5', 'gallery' ); extract(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')); $id = intval($id); if ( 'RAND' == $order ) $orderby = 'none'; if ( !empty($include) ) { $_attachments = get_posts( array('include' => $include, 'post_status' => 'inherit', 'post_type' => 'attachment', 'post_mime_type' => 'image', 'order' => $order, 'orderby' => $orderby) ); $attachments = array(); foreach ( $_attachments as $key => $val ) { $attachments[$val->ID] = $_attachments[$key]; } } elseif ( !empty($exclude) ) { $attachments = get_children( array('post_parent' => $id, 'exclude' => $exclude, 'post_status' => 'inherit', 'post_type' => 'attachment', 'post_mime_type' => 'image', 'order' => $order, 'orderby' => $orderby) ); } else { $attachments = get_children( array('post_parent' => $id, 'post_status' => 'inherit', 'post_type' => 'attachment', 'post_mime_type' => 'image', 'order' => $order, 'orderby' => $orderby) ); } if ( empty($attachments) ) return ''; if ( is_feed() ) { $output = "\n"; foreach ( $attachments as $att_id => $attachment ) $output .= wp_get_attachment_link($att_id, $size, true) . "\n"; return $output; } $itemtag = tag_escape($itemtag); $captiontag = tag_escape($captiontag); $icontag = tag_escape($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'; $columns = intval($columns); $itemwidth = $columns > 0 ? floor(100/$columns) : 100; $float = is_rtl() ? 'right' : 'left'; $selector = "gallery-{$instance}"; $gallery_style = $gallery_div = ''; /** * 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( $size ); $gallery_div = "\n"; return $output; } /** * Output and enqueue default scripts and styles for playlists. * * @since 3.9.0 * * @param string $type Type of playlist: "audio" or "video." */ function wp_playlist_scripts( $type ) { wp_enqueue_style( 'wp-mediaelement' ); wp_enqueue_script( 'wp-playlist' ); ?> 'ASC', 'orderby' => 'menu_order ID', 'id' => $post ? $post->ID : 0, 'include' => '', 'exclude' => '', 'style' => 'light', 'tracklist' => 'audio' === $type, 'tracknumbers' => 'audio' === $type, 'images' => true, 'artists' => true ), $attr, 'playlist' ) ); $id = intval( $id ); if ( 'RAND' == $order ) { $orderby = 'none'; } $playlist_styles = array( 'light' => _x( 'Light', 'light playlist theme' ), 'dark' => _x( 'Dark', 'dark playlist theme' ) ); /** * Filter the available playlist styles. * * @since 3.9.0 * * @param array $playlist_styles Array of playlist styles. Defaults are 'light' and 'dark'. */ $styles = apply_filters( 'playlist_styles', $playlist_styles ); if ( ! in_array( $style, array_keys( $styles ), true ) ) { $style = 'light'; } $args = array( 'post_status' => 'inherit', 'post_type' => 'attachment', 'post_mime_type' => $type, 'order' => $order, 'orderby' => $orderby ); if ( ! empty( $include ) ) { $args['include'] = $include; $_attachments = get_posts( $args ); $attachments = array(); foreach ( $_attachments as $key => $val ) { $attachments[$val->ID] = $_attachments[$key]; } } elseif ( ! empty( $exclude ) ) { $args['post_parent'] = $id; $args['exclude'] = $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; } $supports_thumbs = ( current_theme_supports( 'post-thumbnails', "attachment:$type" ) && post_type_supports( "attachment:$type", 'thumbnail' ) ) || $images; $outer = 22; // default padding and border of wrapper $default_width = 640; $default_height = 360; $theme_width = $content_width - $outer; $theme_height = round( ( $default_height * $theme_width ) / $default_width ); $data = compact( 'type', 'style' ); // don't pass strings to JSON, will be truthy in JS foreach ( array( 'tracklist', 'tracknumbers', 'images', 'artists' ) as $key ) { $data[$key] = filter_var( $$key, FILTER_VALIDATE_BOOLEAN ); } $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' => get_the_title( $attachment->ID ), 'caption' => wptexturize( $attachment->post_excerpt ), 'description' => wptexturize( $attachment->post_content ) ); $track['meta'] = array(); $meta = wp_get_attachment_metadata( $attachment->ID ); if ( ! empty( $meta ) ) { $keys = array( 'title', 'artist', 'band', 'album', 'genre', 'year', 'length', 'length_formatted' ); foreach ( $keys as $key ) { if ( ! empty( $meta[ $key ] ) ) { $track['meta'][ $key ] = $meta[ $key ]; } } if ( 'video' === $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 ( $supports_thumbs ) { $id = get_post_thumbnail_id( $attachment->ID ); if ( ! empty( $id ) ) { list( $src, $width, $height ) = wp_get_attachment_image_src( $id, 'full' ); $track['image'] = compact( 'src', 'width', 'height' ); list( $src, $width, $height ) = wp_get_attachment_image_src( $id, 'thumbnail' ); $track['thumb'] = compact( 'src', 'width', 'height' ); } } $tracks[] = $track; } $data['tracks'] = $tracks; $safe_type = esc_attr( $type ); $safe_style = esc_attr( $style ); ob_start(); if ( 1 === $instance ) { /** * Hook to print and enqueue playlist scripts, styles, and JavaScript templates. * * @since 3.9.0 * * @param string $type Type of playlist: "audio" or "video." * @param string $style The "theme" for the playlist. Core provides "light" and "dark." */ do_action( 'wp_playlist_scripts', $type, $style ); } ?>
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%1$s', esc_url( $url ) ), $url ); } /** * Return a filtered list of WP-supported audio formats * * @since 3.6.0 * @return array */ function wp_get_audio_extensions() { return apply_filters( 'wp_audio_extensions', array( 'mp3', 'ogg', 'wma', 'm4a', 'wav' ) ); } /** * The Audio shortcode. * * This implements the functionality of the Audio Shortcode for displaying * WordPress mp3s in a post. * * @since 3.6.0 * * @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 `