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 && is_admin() ) // 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 ); 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; $img_url = wp_get_attachment_url($id); $meta = wp_get_attachment_metadata($id); $width = $height = 0; $is_intermediate = false; $img_url_basename = wp_basename($img_url); // plugins can use this to provide resize services if ( $out = apply_filters('image_downsize', false, $id, $size) ) return $out; // 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; } /** * Registers a new image size * * @since 2.9.0 */ 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' => (bool) $crop ); } /** * Registers an image size for the post thumbnail * * @since 2.9.0 */ 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); $class = 'align' . esc_attr($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; $w = intval( $current_width * $ratio ); $h = 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 resized dimensions for use in imagecopyresampled(). * * Calculate dimensions and coordinates for a resized image that fits within a * specified width and height. If $crop is true, the largest matching central * portion of the image will be cropped out and resized to the required size. * * @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. * @param int $orig_h Original height. * @param int $dest_w New width. * @param int $dest_h New height. * @param bool $crop Optional, default is false. Whether to crop image or resize. * @return bool|array False on failure. Returned array matches parameters for imagecopyresampled() PHP function. */ function image_resize_dimensions($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); $s_x = floor( ($orig_w - $crop_w) / 2 ); $s_y = floor( ($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_Image_Editor::get_instance( $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 $icon Optional, default is false. Whether it is an icon. * @return string HTML img element or empty string on failure. */ function wp_get_attachment_image($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 attributed to the shortcode. * @param string $content Optional. Shortcode content. * @return string */ function img_caption_shortcode($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] ); } } // Allow plugins/themes to override the default caption template. $output = apply_filters('img_caption_shortcode', '', $attr, $content); if ( $output != '' ) return $output; extract(shortcode_atts(array( 'id' => '', 'align' => 'alignnone', 'width' => '', 'caption' => '' ), $attr)); if ( 1 > (int) $width || empty($caption) ) return $content; if ( $id ) $id = 'id="' . esc_attr($id) . '" '; return '
' . do_shortcode( $content ) . '

' . $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 $attr Attributes of the shortcode. * @return string HTML content to display gallery. */ function gallery_shortcode($attr) { $post = get_post(); static $instance = 0; $instance++; // Allow plugins/themes to override the default gallery template. $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'] ); } extract(shortcode_atts(array( 'order' => 'ASC', 'orderby' => 'menu_order ID', 'id' => $post->ID, 'itemtag' => 'dl', 'icontag' => 'dt', 'captiontag' => 'dd', 'columns' => 3, 'size' => 'thumbnail', 'ids' => '', 'include' => '', 'exclude' => '' ), $attr)); $id = intval($id); if ( 'RAND' == $order ) $orderby = 'none'; if ( !empty( $ids ) ) { // 'ids' is explicitly ordered $orderby = 'post__in'; $include = $ids; } if ( !empty($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); $columns = intval($columns); $itemwidth = $columns > 0 ? floor(100/$columns) : 100; $float = is_rtl() ? 'right' : 'left'; $selector = "gallery-{$instance}"; $gallery_style = $gallery_div = ''; if ( apply_filters( 'use_default_gallery_style', true ) ) $gallery_style = " "; $size_class = sanitize_html_class( $size ); $gallery_div = "\n"; return $output; } /** * Display previous image link that has the same post parent. * * @since 2.5.0 * @param string $size Optional, default is 'thumbnail'. Size of image, either array or string. 0 or 'none' will default to post_title or $text; * @param string $text Optional, default is false. If included, link will reflect $text variable. * @return string HTML content. */ function previous_image_link($size = 'thumbnail', $text = false) { adjacent_image_link(true, $size, $text); } /** * Display next image link that has the same post parent. * * @since 2.5.0 * @param string $size Optional, default is 'thumbnail'. Size of image, either array or string. 0 or 'none' will default to post_title or $text; * @param string $text Optional, default is false. If included, link will reflect $text variable. * @return string HTML content. */ function next_image_link($size = 'thumbnail', $text = false) { adjacent_image_link(false, $size, $text); } /** * Display next or previous image link that has the same post parent. * * Retrieves the current attachment object from the $post global. * * @since 2.5.0 * * @param bool $prev Optional. Default is true to display previous link, false for next. */ function adjacent_image_link($prev = true, $size = 'thumbnail', $text = false) { $post = get_post(); $attachments = array_values( get_children( array( 'post_parent' => $post->post_parent, 'post_status' => 'inherit', 'post_type' => 'attachment', 'post_mime_type' => 'image', 'order' => 'ASC', 'orderby' => 'menu_order ID' ) ) ); foreach ( $attachments as $k => $attachment ) if ( $attachment->ID == $post->ID ) break; $k = $prev ? $k - 1 : $k + 1; if ( isset($attachments[$k]) ) echo wp_get_attachment_link($attachments[$k]->ID, $size, true, false, $text); } /** * Retrieve taxonomies attached to the attachment. * * @since 2.5.0 * * @param int|array|object $attachment Attachment ID, Attachment data array, or Attachment data object. * @return array Empty array on failure. List of taxonomies on success. */ function get_attachment_taxonomies($attachment) { if ( is_int( $attachment ) ) $attachment = get_post($attachment); else if ( is_array($attachment) ) $attachment = (object) $attachment; if ( ! is_object($attachment) ) return array(); $filename = basename($attachment->guid); $objects = array('attachment'); if ( false !== strpos($filename, '.') ) $objects[] = 'attachment:' . substr($filename, strrpos($filename, '.') + 1); if ( !empty($attachment->post_mime_type) ) { $objects[] = 'attachment:' . $attachment->post_mime_type; if ( false !== strpos($attachment->post_mime_type, '/') ) foreach ( explode('/', $attachment->post_mime_type) as $token ) if ( !empty($token) ) $objects[] = "attachment:$token"; } $taxonomies = array(); foreach ( $objects as $object ) if ( $taxes = get_object_taxonomies($object) ) $taxonomies = array_merge($taxonomies, $taxes); return array_unique($taxonomies); } /** * Return all of the taxonomy names that are registered for attachments. * * Handles mime-type-specific taxonomies such as attachment:image and attachment:video. * * @since 3.5.0 * @see get_attachment_taxonomies() * @uses get_taxonomies() * * @param string $output The type of output to return, either taxonomy 'names' or 'objects'. 'names' is the default. * @return array The names of all taxonomy of $object_type. */ function get_taxonomies_for_attachments( $output = 'names' ) { $taxonomies = array(); foreach ( get_taxonomies( array(), 'objects' ) as $taxonomy ) { foreach ( $taxonomy->object_type as $object_type ) { if ( 'attachment' == $object_type || 0 === strpos( $object_type, 'attachment:' ) ) { if ( 'names' == $output ) $taxonomies[] = $taxonomy->name; else $taxonomies[ $taxonomy->name ] = $taxonomy; break; } } } return $taxonomies; } /** * Check if the installed version of GD supports particular image type * * @since 2.9.0 * * @param string $mime_type * @return bool */ function gd_edit_image_support($mime_type) { if ( function_exists('imagetypes') ) { switch( $mime_type ) { case 'image/jpeg': return (imagetypes() & IMG_JPG) != 0; case 'image/png': return (imagetypes() & IMG_PNG) != 0; case 'image/gif': return (imagetypes() & IMG_GIF) != 0; } } else { switch( $mime_type ) { case 'image/jpeg': return function_exists('imagecreatefromjpeg'); case 'image/png': return function_exists('imagecreatefrompng'); case 'image/gif': return function_exists('imagecreatefromgif'); } } return false; } /** * Create new GD image resource with transparency support * @TODO: Deprecate if possible. * * @since 2.9.0 * * @param int $width Image width * @param int $height Image height * @return image resource */ function wp_imagecreatetruecolor($width, $height) { $img = imagecreatetruecolor($width, $height); if ( is_resource($img) && function_exists('imagealphablending') && function_exists('imagesavealpha') ) { imagealphablending($img, false); imagesavealpha($img, true); } return $img; } /** * Register an embed handler. This function should probably only be used for sites that do not support oEmbed. * * @since 2.9.0 * @see WP_Embed::register_handler() */ function wp_embed_register_handler( $id, $regex, $callback, $priority = 10 ) { global $wp_embed; $wp_embed->register_handler( $id, $regex, $callback, $priority ); } /** * Unregister a previously registered embed handler. * * @since 2.9.0 * @see WP_Embed::unregister_handler() */ function wp_embed_unregister_handler( $id, $priority = 10 ) { global $wp_embed; $wp_embed->unregister_handler( $id, $priority ); } /** * Create default array of embed parameters. * * The width defaults to the content width as specified by the theme. If the * theme does not specify a content width, then 500px is used. * * The default height is 1.5 times the width, or 1000px, whichever is smaller. * * The 'embed_defaults' filter can be used to adjust either of these values. * * @since 2.9.0 * * @return array Default embed parameters. */ function wp_embed_defaults() { if ( ! empty( $GLOBALS['content_width'] ) ) $width = (int) $GLOBALS['content_width']; if ( empty( $width ) ) $width = 500; $height = min( ceil( $width * 1.5 ), 1000 ); return apply_filters( 'embed_defaults', compact( 'width', 'height' ) ); } /** * Based on a supplied width/height example, return the biggest possible dimensions based on the max width/height. * * @since 2.9.0 * @uses wp_constrain_dimensions() This function passes the widths and the heights. * * @param int $example_width The width of an example embed. * @param int $example_height The height of an example embed. * @param int $max_width The maximum allowed width. * @param int $max_height The maximum allowed height. * @return array The maximum possible width and height based on the example ratio. */ function wp_expand_dimensions( $example_width, $example_height, $max_width, $max_height ) { $example_width = (int) $example_width; $example_height = (int) $example_height; $max_width = (int) $max_width; $max_height = (int) $max_height; return wp_constrain_dimensions( $example_width * 1000000, $example_height * 1000000, $max_width, $max_height ); } /** * Attempts to fetch the embed HTML for a provided URL using oEmbed. * * @since 2.9.0 * @see WP_oEmbed * * @uses _wp_oembed_get_object() * @uses WP_oEmbed::get_html() * * @param string $url The URL that should be embedded. * @param array $args Additional arguments and parameters. * @return bool|string False on failure or the embed HTML on success. */ function wp_oembed_get( $url, $args = '' ) { require_once( ABSPATH . WPINC . '/class-oembed.php' ); $oembed = _wp_oembed_get_object(); return $oembed->get_html( $url, $args ); } /** * Adds a URL format and oEmbed provider URL pair. * * @since 2.9.0 * @see WP_oEmbed * * @uses _wp_oembed_get_object() * * @param string $format The format of URL that this provider can handle. You can use asterisks as wildcards. * @param string $provider The URL to the oEmbed provider. * @param boolean $regex Whether the $format parameter is in a regex format. */ function wp_oembed_add_provider( $format, $provider, $regex = false ) { require_once( ABSPATH . WPINC . '/class-oembed.php' ); $oembed = _wp_oembed_get_object(); $oembed->providers[$format] = array( $provider, $regex ); } /** * Removes an oEmbed provider. * * @since 3.5 * @see WP_oEmbed * * @uses _wp_oembed_get_object() * * @param string $format The URL format for the oEmbed provider to remove. */ function wp_oembed_remove_provider( $format ) { require_once( ABSPATH . WPINC . '/class-oembed.php' ); $oembed = _wp_oembed_get_object(); if ( isset( $oembed->providers[ $format ] ) ) { unset( $oembed->providers[ $format ] ); return true; } return false; } /** * Determines if default embed handlers should be loaded. * * Checks to make sure that the embeds library hasn't already been loaded. If * it hasn't, then it will load the embeds library. * * @since 2.9.0 */ function wp_maybe_load_embeds() { if ( ! apply_filters( 'load_default_embeds', true ) ) return; wp_embed_register_handler( 'googlevideo', '#http://video\.google\.([A-Za-z.]{2,5})/videoplay\?docid=([\d-]+)(.*?)#i', 'wp_embed_handler_googlevideo' ); } /** * The Google Video embed handler callback. Google Video does not support oEmbed. * * @see WP_Embed::register_handler() * @see WP_Embed::shortcode() * * @param array $matches The regex matches from the provided regex when calling {@link wp_embed_register_handler()}. * @param array $attr Embed attributes. * @param string $url The original URL that was matched by the regex. * @param array $rawattr The original unmodified attributes. * @return string The embed HTML. */ function wp_embed_handler_googlevideo( $matches, $attr, $url, $rawattr ) { // If the user supplied a fixed width AND height, use it if ( !empty($rawattr['width']) && !empty($rawattr['height']) ) { $width = (int) $rawattr['width']; $height = (int) $rawattr['height']; } else { list( $width, $height ) = wp_expand_dimensions( 425, 344, $attr['width'], $attr['height'] ); } return apply_filters( 'embed_googlevideo', '', $matches, $attr, $url, $rawattr ); } /** * {@internal Missing Short Description}} * * @since 2.3.0 * * @param unknown_type $size * @return unknown */ function wp_convert_hr_to_bytes( $size ) { $size = strtolower( $size ); $bytes = (int) $size; if ( strpos( $size, 'k' ) !== false ) $bytes = intval( $size ) * 1024; elseif ( strpos( $size, 'm' ) !== false ) $bytes = intval($size) * 1024 * 1024; elseif ( strpos( $size, 'g' ) !== false ) $bytes = intval( $size ) * 1024 * 1024 * 1024; return $bytes; } /** * {@internal Missing Short Description}} * * @since 2.3.0 * * @param unknown_type $bytes * @return unknown */ function wp_convert_bytes_to_hr( $bytes ) { $units = array( 0 => 'B', 1 => 'kB', 2 => 'MB', 3 => 'GB' ); $log = log( $bytes, 1024 ); $power = (int) $log; $size = pow( 1024, $log - $power ); return $size . $units[$power]; } /** * {@internal Missing Short Description}} * * @since 2.5.0 * * @return unknown */ function wp_max_upload_size() { $u_bytes = wp_convert_hr_to_bytes( ini_get( 'upload_max_filesize' ) ); $p_bytes = wp_convert_hr_to_bytes( ini_get( 'post_max_size' ) ); $bytes = apply_filters( 'upload_size_limit', min( $u_bytes, $p_bytes ), $u_bytes, $p_bytes ); return $bytes; } /** * Prints default plupload arguments. * * @since 3.4.0 */ function wp_plupload_default_settings() { global $wp_scripts; $data = $wp_scripts->get_data( 'wp-plupload', 'data' ); if ( $data && false !== strpos( $data, '_wpPluploadSettings' ) ) return; $max_upload_size = wp_max_upload_size(); $defaults = array( 'runtimes' => 'html5,silverlight,flash,html4', 'file_data_name' => 'async-upload', // key passed to $_FILE. 'multiple_queues' => true, 'max_file_size' => $max_upload_size . 'b', 'url' => admin_url( 'admin-ajax.php', 'relative' ), 'flash_swf_url' => includes_url( 'js/plupload/plupload.flash.swf' ), 'silverlight_xap_url' => includes_url( 'js/plupload/plupload.silverlight.xap' ), 'filters' => array( array( 'title' => __( 'Allowed Files' ), 'extensions' => '*') ), 'multipart' => true, 'urlstream_upload' => true, ); $defaults = apply_filters( 'plupload_default_settings', $defaults ); $params = array( 'action' => 'upload-attachment', ); $params = apply_filters( 'plupload_default_params', $params ); $params['_wpnonce'] = wp_create_nonce( 'media-form' ); $defaults['multipart_params'] = $params; $settings = array( 'defaults' => $defaults, 'browser' => array( 'mobile' => wp_is_mobile(), 'supported' => _device_can_upload(), ), ); $script = 'var _wpPluploadSettings = ' . json_encode( $settings ) . ';'; if ( $data ) $script = "$data\n$script"; $wp_scripts->add_data( 'wp-plupload', 'data', $script ); } add_action( 'customize_controls_enqueue_scripts', 'wp_plupload_default_settings' ); /** * Prepares an attachment post object for JS, where it is expected * to be JSON-encoded and fit into an Attachment model. * * @since 3.5.0 * * @param mixed $attachment Attachment ID or object. * @return array Array of attachment details. */ function wp_prepare_attachment_for_js( $attachment ) { if ( ! $attachment = get_post( $attachment ) ) return; if ( 'attachment' != $attachment->post_type ) return; $meta = wp_get_attachment_metadata( $attachment->ID ); list( $type, $subtype ) = explode( '/', $attachment->post_mime_type ); $attachment_url = wp_get_attachment_url( $attachment->ID ); $response = array( 'id' => $attachment->ID, 'title' => $attachment->post_title, 'filename' => basename( $attachment->guid ), 'url' => $attachment_url, 'link' => get_attachment_link( $attachment->ID ), 'alt' => get_post_meta( $attachment->ID, '_wp_attachment_image_alt', true ), 'author' => $attachment->post_author, 'description' => $attachment->post_content, 'caption' => $attachment->post_excerpt, 'name' => $attachment->post_name, 'status' => $attachment->post_status, 'uploadedTo' => $attachment->post_parent, 'date' => strtotime( $attachment->post_date_gmt ) * 1000, 'modified' => strtotime( $attachment->post_modified_gmt ) * 1000, 'mime' => $attachment->post_mime_type, 'type' => $type, 'subtype' => $subtype, 'icon' => wp_mime_type_icon( $attachment->ID ), ); if ( $meta && 'image' === $type ) { $sizes = array(); $base_url = str_replace( wp_basename( $attachment_url ), '', $attachment_url ); if ( isset( $meta['sizes'] ) ) { foreach ( $meta['sizes'] as $slug => $size ) { $sizes[ $slug ] = array( 'height' => $size['height'], 'width' => $size['width'], 'url' => $base_url . $size['file'], 'orientation' => $size['height'] > $size['width'] ? 'portrait' : 'landscape', ); } } $response = array_merge( $response, array( 'height' => $meta['height'], 'width' => $meta['width'], 'sizes' => $sizes, 'orientation' => $meta['height'] > $meta['width'] ? 'portrait' : 'landscape', ) ); } return apply_filters( 'wp_prepare_attachment_for_js', $response, $attachment, $meta ); } /** * Prints the templates used in the media manager. * * @since 3.5.0 */ function wp_print_media_templates( $attachment ) { ?>