X-Git-Url: https://scripts.mit.edu/gitweb/autoinstalls/wordpress.git/blobdiff_plain/177fd6fefd2e3d5a0ea6591c71d660cabdb3c1a4..9e77185fafaf4e60e2b73821e0e4b9b1a11fb85f:/wp-admin/includes/image.php diff --git a/wp-admin/includes/image.php b/wp-admin/includes/image.php index 7699f986..b78bac2a 100644 --- a/wp-admin/includes/image.php +++ b/wp-admin/includes/image.php @@ -3,177 +3,215 @@ * File contains all the administration image manipulation functions. * * @package WordPress + * @subpackage Administration */ /** - * wp_create_thumbnail() - Create a thumbnail from an Image given a maximum side size. + * Crop an Image to a given size. * - * @package WordPress - * @param mixed $file Filename of the original image, Or attachment id - * @param int $max_side Maximum length of a single side for the thumbnail - * @return string Thumbnail path on success, Error string on failure - * - * This function can handle most image file formats which PHP supports. - * If PHP does not have the functionality to save in a file of the same format, the thumbnail will be created as a jpeg. - */ -function wp_create_thumbnail( $file, $max_side, $deprecated = '' ) { - - $thumbpath = image_resize( $file, $max_side, $max_side ); - return apply_filters( 'wp_create_thumbnail', $thumbpath ); -} - -/** - * wp_crop_image() - Crop an Image to a given size. - * - * @package WordPress - * @internal Missing Long Description - * @param int $src_file The source file - * @param int $src_x The start x position to crop from - * @param int $src_y The start y position to crop from - * @param int $src_w The width to crop - * @param int $src_h The height to crop - * @param int $dst_w The destination width - * @param int $dst_h The destination height - * @param int $src_abs If the source crop points are absolute - * @param int $dst_file The destination file to write to - * @return string New filepath on success, String error message on failure + * @since 2.1.0 * + * @param string|int $src The source file or Attachment ID. + * @param int $src_x The start x position to crop from. + * @param int $src_y The start y position to crop from. + * @param int $src_w The width to crop. + * @param int $src_h The height to crop. + * @param int $dst_w The destination width. + * @param int $dst_h The destination height. + * @param int $src_abs Optional. If the source crop points are absolute. + * @param string $dst_file Optional. The destination file to write to. + * @return string|WP_Error New filepath on success, WP_Error on failure. */ -function wp_crop_image( $src_file, $src_x, $src_y, $src_w, $src_h, $dst_w, $dst_h, $src_abs = false, $dst_file = false ) { - if ( is_numeric( $src_file ) ) // Handle int as attachment ID - $src_file = get_attached_file( $src_file ); - - $src = wp_load_image( $src_file ); - - if ( !is_resource( $src )) - return $src; - - $dst = imagecreatetruecolor( $dst_w, $dst_h ); - - if ( $src_abs ) { - $src_w -= $src_x; - $src_h -= $src_y; +function wp_crop_image( $src, $src_x, $src_y, $src_w, $src_h, $dst_w, $dst_h, $src_abs = false, $dst_file = false ) { + $src_file = $src; + if ( is_numeric( $src ) ) { // Handle int as attachment ID + $src_file = get_attached_file( $src ); + + if ( ! file_exists( $src_file ) ) { + // If the file doesn't exist, attempt a url fopen on the src link. + // This can occur with certain file replication plugins. + $src = _load_image_to_edit_path( $src, 'full' ); + } else { + $src = $src_file; + } } - if (function_exists('imageantialias')) - imageantialias( $dst, true ); + $editor = wp_get_image_editor( $src ); + if ( is_wp_error( $editor ) ) + return $editor; - imagecopyresampled( $dst, $src, 0, 0, $src_x, $src_y, $dst_w, $dst_h, $src_w, $src_h ); - - imagedestroy( $src ); // Free up memory + $src = $editor->crop( $src_x, $src_y, $src_w, $src_h, $dst_w, $dst_h, $src_abs ); + if ( is_wp_error( $src ) ) + return $src; if ( ! $dst_file ) $dst_file = str_replace( basename( $src_file ), 'cropped-' . basename( $src_file ), $src_file ); - $dst_file = preg_replace( '/\\.[^\\.]+$/', '.jpg', $dst_file ); + /* + * The directory containing the original file may no longer exist when + * using a replication plugin. + */ + wp_mkdir_p( dirname( $dst_file ) ); - if ( imagejpeg( $dst, $dst_file ) ) - return $dst_file; - else - return false; + $dst_file = dirname( $dst_file ) . '/' . wp_unique_filename( dirname( $dst_file ), basename( $dst_file ) ); + + $result = $editor->save( $dst_file ); + if ( is_wp_error( $result ) ) + return $result; + + return $dst_file; } /** - * wp_generate_attachment_metadata() - Generate post Image attachment Metadata + * Generate post thumbnail attachment meta data. * - * @package WordPress - * @internal Missing Long Description - * @param int $attachment_id Attachment Id to process - * @param string $file Filepath of the Attached image - * @return mixed Metadata for attachment + * @since 2.1.0 * + * @param int $attachment_id Attachment Id to process. + * @param string $file Filepath of the Attached image. + * @return mixed Metadata for attachment. */ function wp_generate_attachment_metadata( $attachment_id, $file ) { $attachment = get_post( $attachment_id ); $metadata = array(); + $support = false; if ( preg_match('!^image/!', get_post_mime_type( $attachment )) && file_is_displayable_image($file) ) { $imagesize = getimagesize( $file ); $metadata['width'] = $imagesize[0]; $metadata['height'] = $imagesize[1]; - list($uwidth, $uheight) = wp_shrink_dimensions($metadata['width'], $metadata['height']); - $metadata['hwstring_small'] = "height='$uheight' width='$uwidth'"; - $metadata['file'] = $file; - - // make thumbnails and other intermediate sizes - $sizes = array('thumbnail', 'medium'); - $sizes = apply_filters('intermediate_image_sizes', $sizes); - - foreach ($sizes as $size) { - $resized = image_make_intermediate_size( $file, get_option("{$size}_size_w"), get_option("{$size}_size_h"), get_option("{$size}_crop") ); - if ( $resized ) - $metadata['sizes'][$size] = $resized; + + // Make the file path relative to the upload dir. + $metadata['file'] = _wp_relative_upload_path($file); + + // Make thumbnails and other intermediate sizes. + global $_wp_additional_image_sizes; + + $sizes = array(); + foreach ( get_intermediate_image_sizes() as $s ) { + $sizes[$s] = array( 'width' => '', 'height' => '', 'crop' => false ); + if ( isset( $_wp_additional_image_sizes[$s]['width'] ) ) + $sizes[$s]['width'] = intval( $_wp_additional_image_sizes[$s]['width'] ); // For theme-added sizes + else + $sizes[$s]['width'] = get_option( "{$s}_size_w" ); // For default sizes set in options + if ( isset( $_wp_additional_image_sizes[$s]['height'] ) ) + $sizes[$s]['height'] = intval( $_wp_additional_image_sizes[$s]['height'] ); // For theme-added sizes + else + $sizes[$s]['height'] = get_option( "{$s}_size_h" ); // For default sizes set in options + if ( isset( $_wp_additional_image_sizes[$s]['crop'] ) ) + $sizes[$s]['crop'] = $_wp_additional_image_sizes[$s]['crop']; // For theme-added sizes + else + $sizes[$s]['crop'] = get_option( "{$s}_crop" ); // For default sizes set in options + } + + /** + * Filter the image sizes automatically generated when uploading an image. + * + * @since 2.9.0 + * + * @param array $sizes An associative array of image sizes. + */ + $sizes = apply_filters( 'intermediate_image_sizes_advanced', $sizes ); + + if ( $sizes ) { + $editor = wp_get_image_editor( $file ); + + if ( ! is_wp_error( $editor ) ) + $metadata['sizes'] = $editor->multi_resize( $sizes ); + } else { + $metadata['sizes'] = array(); } - - // fetch additional metadata from exif/iptc + + // Fetch additional metadata from EXIF/IPTC. $image_meta = wp_read_image_metadata( $file ); - if ($image_meta) + if ( $image_meta ) $metadata['image_meta'] = $image_meta; + } elseif ( preg_match( '#^video/#', get_post_mime_type( $attachment ) ) ) { + $metadata = wp_read_video_metadata( $file ); + $support = current_theme_supports( 'post-thumbnails', 'attachment:video' ) || post_type_supports( 'attachment:video', 'thumbnail' ); + } elseif ( preg_match( '#^audio/#', get_post_mime_type( $attachment ) ) ) { + $metadata = wp_read_audio_metadata( $file ); + $support = current_theme_supports( 'post-thumbnails', 'attachment:audio' ) || post_type_supports( 'attachment:audio', 'thumbnail' ); } - return apply_filters( 'wp_generate_attachment_metadata', $metadata ); -} - -/** - * wp_load_image() - Load an image which PHP Supports. - * - * @package WordPress - * @internal Missing Long Description - * @param string $file Filename of the image to load - * @return resource The resulting image resource on success, Error string on failure. - * - */ -function wp_load_image( $file ) { - if ( is_numeric( $file ) ) - $file = get_attached_file( $file ); - if ( ! file_exists( $file ) ) - return sprintf(__("File '%s' doesn't exist?"), $file); - - if ( ! function_exists('imagecreatefromstring') ) - return __('The GD image library is not installed.'); - - // Set artificially high because GD uses uncompressed images in memory - @ini_set('memory_limit', '256M'); - $image = imagecreatefromstring( file_get_contents( $file ) ); - - if ( !is_resource( $image ) ) - return sprintf(__("File '%s' is not an image."), $file); + if ( $support && ! empty( $metadata['image']['data'] ) ) { + // Check for existing cover. + $hash = md5( $metadata['image']['data'] ); + $posts = get_posts( array( + 'fields' => 'ids', + 'post_type' => 'attachment', + 'post_mime_type' => $metadata['image']['mime'], + 'post_status' => 'inherit', + 'posts_per_page' => 1, + 'meta_key' => '_cover_hash', + 'meta_value' => $hash + ) ); + $exists = reset( $posts ); + + if ( ! empty( $exists ) ) { + update_post_meta( $attachment_id, '_thumbnail_id', $exists ); + } else { + $ext = '.jpg'; + switch ( $metadata['image']['mime'] ) { + case 'image/gif': + $ext = '.gif'; + break; + case 'image/png': + $ext = '.png'; + break; + } + $basename = str_replace( '.', '-', basename( $file ) ) . '-image' . $ext; + $uploaded = wp_upload_bits( $basename, '', $metadata['image']['data'] ); + if ( false === $uploaded['error'] ) { + $image_attachment = array( + 'post_mime_type' => $metadata['image']['mime'], + 'post_type' => 'attachment', + 'post_content' => '', + ); + /** + * Filter the parameters for the attachment thumbnail creation. + * + * @since 3.9.0 + * + * @param array $image_attachment An array of parameters to create the thumbnail. + * @param array $metadata Current attachment metadata. + * @param array $uploaded An array containing the thumbnail path and url. + */ + $image_attachment = apply_filters( 'attachment_thumbnail_args', $image_attachment, $metadata, $uploaded ); + + $sub_attachment_id = wp_insert_attachment( $image_attachment, $uploaded['file'] ); + add_post_meta( $sub_attachment_id, '_cover_hash', $hash ); + $attach_data = wp_generate_attachment_metadata( $sub_attachment_id, $uploaded['file'] ); + wp_update_attachment_metadata( $sub_attachment_id, $attach_data ); + update_post_meta( $attachment_id, '_thumbnail_id', $sub_attachment_id ); + } + } + } - return $image; + // Remove the blob of binary data from the array. + if ( isset( $metadata['image']['data'] ) ) + unset( $metadata['image']['data'] ); + + /** + * Filter the generated attachment meta data. + * + * @since 2.1.0 + * + * @param array $metadata An array of attachment meta data. + * @param int $attachment_id Current attachment ID. + */ + return apply_filters( 'wp_generate_attachment_metadata', $metadata, $attachment_id ); } /** - * get_udims() - Calculated the new dimentions for downsampled images + * Convert a fraction string to a decimal. * - * @package WordPress - * @internal Missing Description - * @see wp_shrink_dimensions() - * @param int $width Current width of the image - * @param int $height Current height of the image - * @return mixed Array(height,width) of shrunk dimensions. + * @since 2.5.0 * + * @param string $str + * @return int|float */ -function get_udims( $width, $height) { - return wp_shrink_dimensions( $width, $height ); -} -/** - * wp_shrink_dimensions() - Calculates the new dimentions for a downsampled image. - * - * @package WordPress - * @internal Missing Long Description - * @param int $width Current width of the image - * @param int $height Current height of the image - * @param int $wmax Maximum wanted width - * @param int $hmax Maximum wanted height - * @return mixed Array(height,width) of shrunk dimensions. - * - */ -function wp_shrink_dimensions( $width, $height, $wmax = 128, $hmax = 96 ) { - return wp_constrain_dimensions( $width, $height, $wmax, $hmax ); -} - -// convert a fraction string to a decimal function wp_exif_frac2dec($str) { @list( $n, $d ) = explode( '/', $str ); if ( !empty($d) ) @@ -181,25 +219,49 @@ function wp_exif_frac2dec($str) { return $str; } -// convert the exif date format to a unix timestamp +/** + * Convert the exif date format to a unix timestamp. + * + * @since 2.5.0 + * + * @param string $str + * @return int + */ function wp_exif_date2ts($str) { - // seriously, who formats a date like 'YYYY:MM:DD hh:mm:ss'? @list( $date, $time ) = explode( ' ', trim($str) ); @list( $y, $m, $d ) = explode( ':', $date ); return strtotime( "{$y}-{$m}-{$d} {$time}" ); } -// get extended image metadata, exif or iptc as available +/** + * Get extended image metadata, exif or iptc as available. + * + * Retrieves the EXIF metadata aperture, credit, camera, caption, copyright, iso + * created_timestamp, focal_length, shutter_speed, and title. + * + * The IPTC metadata that is retrieved is APP13, credit, byline, created date + * and time, caption, copyright, and title. Also includes FNumber, Model, + * DateTimeDigitized, FocalLength, ISOSpeedRatings, and ExposureTime. + * + * @todo Try other exif libraries if available. + * @since 2.5.0 + * + * @param string $file + * @return bool|array False on failure. Image metadata array on success. + */ function wp_read_image_metadata( $file ) { - if ( !file_exists( $file ) ) + if ( ! file_exists( $file ) ) return false; - list(,,$sourceImageType) = getimagesize( $file ); + list( , , $sourceImageType ) = getimagesize( $file ); - // exif contains a bunch of data we'll probably never need formatted in ways that are difficult to use. - // We'll normalize it and just extract the fields that are likely to be useful. Fractions and numbers - // are converted to floats, dates to unix timestamps, and everything else to strings. + /* + * EXIF contains a bunch of data we'll probably never need formatted in ways + * that are difficult to use. We'll normalize it and just extract the fields + * that are likely to be useful. Fractions and numbers are converted to + * floats, dates to unix timestamps, and everything else to strings. + */ $meta = array( 'aperture' => 0, 'credit' => '', @@ -211,72 +273,326 @@ function wp_read_image_metadata( $file ) { 'iso' => 0, 'shutter_speed' => 0, 'title' => '', + 'orientation' => 0, ); - // read iptc first, since it might contain data not available in exif such as caption, description etc - if ( is_callable('iptcparse') ) { - getimagesize($file, $info); - if ( !empty($info['APP13']) ) { - $iptc = iptcparse($info['APP13']); - if ( !empty($iptc['2#110'][0]) ) // credit + /* + * Read IPTC first, since it might contain data not available in exif such + * as caption, description etc. + */ + if ( is_callable( 'iptcparse' ) ) { + getimagesize( $file, $info ); + + if ( ! empty( $info['APP13'] ) ) { + $iptc = iptcparse( $info['APP13'] ); + + // Headline, "A brief synopsis of the caption." + if ( ! empty( $iptc['2#105'][0] ) ) { + $meta['title'] = trim( $iptc['2#105'][0] ); + /* + * Title, "Many use the Title field to store the filename of the image, + * though the field may be used in many ways." + */ + } elseif ( ! empty( $iptc['2#005'][0] ) ) { + $meta['title'] = trim( $iptc['2#005'][0] ); + } + + if ( ! empty( $iptc['2#120'][0] ) ) { // description / legacy caption + $caption = trim( $iptc['2#120'][0] ); + if ( empty( $meta['title'] ) ) { + mbstring_binary_safe_encoding(); + $caption_length = strlen( $caption ); + reset_mbstring_encoding(); + + // Assume the title is stored in 2:120 if it's short. + if ( $caption_length < 80 ) { + $meta['title'] = $caption; + } else { + $meta['caption'] = $caption; + } + } elseif ( $caption != $meta['title'] ) { + $meta['caption'] = $caption; + } + } + + if ( ! empty( $iptc['2#110'][0] ) ) // credit $meta['credit'] = trim( $iptc['2#110'][0] ); - elseif ( !empty($iptc['2#080'][0]) ) // byline + elseif ( ! empty( $iptc['2#080'][0] ) ) // creator / legacy byline $meta['credit'] = trim( $iptc['2#080'][0] ); - if ( !empty($iptc['2#055'][0]) and !empty($iptc['2#060'][0]) ) // created datee and time - $meta['created_timestamp'] = strtotime($iptc['2#055'][0] . ' ' . $iptc['2#060'][0]); - if ( !empty($iptc['2#120'][0]) ) // caption - $meta['caption'] = trim( $iptc['2#120'][0] ); - if ( !empty($iptc['2#116'][0]) ) // copyright + + if ( ! empty( $iptc['2#055'][0] ) and ! empty( $iptc['2#060'][0] ) ) // created date and time + $meta['created_timestamp'] = strtotime( $iptc['2#055'][0] . ' ' . $iptc['2#060'][0] ); + + if ( ! empty( $iptc['2#116'][0] ) ) // copyright $meta['copyright'] = trim( $iptc['2#116'][0] ); - if ( !empty($iptc['2#005'][0]) ) // title - $meta['title'] = trim( $iptc['2#005'][0] ); } } - // fetch additional info from exif if available - if ( is_callable('exif_read_data') && in_array($sourceImageType, apply_filters('wp_read_image_metadata_types', array(IMAGETYPE_JPEG, IMAGETYPE_TIFF_II, IMAGETYPE_TIFF_MM)) ) ) { + /** + * Filter the image types to check for exif data. + * + * @since 2.5.0 + * + * @param array $image_types Image types to check for exif data. + */ + if ( is_callable( 'exif_read_data' ) && in_array( $sourceImageType, apply_filters( 'wp_read_image_metadata_types', array( IMAGETYPE_JPEG, IMAGETYPE_TIFF_II, IMAGETYPE_TIFF_MM ) ) ) ) { $exif = @exif_read_data( $file ); - if (!empty($exif['FNumber'])) + + if ( empty( $meta['title'] ) && ! empty( $exif['Title'] ) ) { + $meta['title'] = trim( $exif['Title'] ); + } + + if ( ! empty( $exif['ImageDescription'] ) ) { + mbstring_binary_safe_encoding(); + $description_length = strlen( $exif['ImageDescription'] ); + reset_mbstring_encoding(); + + if ( empty( $meta['title'] ) && $description_length < 80 ) { + // Assume the title is stored in ImageDescription + $meta['title'] = trim( $exif['ImageDescription'] ); + if ( empty( $meta['caption'] ) && ! empty( $exif['COMPUTED']['UserComment'] ) && trim( $exif['COMPUTED']['UserComment'] ) != $meta['title'] ) { + $meta['caption'] = trim( $exif['COMPUTED']['UserComment'] ); + } + } elseif ( empty( $meta['caption'] ) && trim( $exif['ImageDescription'] ) != $meta['title'] ) { + $meta['caption'] = trim( $exif['ImageDescription'] ); + } + } elseif ( empty( $meta['caption'] ) && ! empty( $exif['Comments'] ) && trim( $exif['Comments'] ) != $meta['title'] ) { + $meta['caption'] = trim( $exif['Comments'] ); + } + + if ( empty( $meta['credit'] ) ) { + if ( ! empty( $exif['Artist'] ) ) { + $meta['credit'] = trim( $exif['Artist'] ); + } elseif ( ! empty($exif['Author'] ) ) { + $meta['credit'] = trim( $exif['Author'] ); + } + } + + if ( empty( $meta['copyright'] ) && ! empty( $exif['Copyright'] ) ) { + $meta['copyright'] = trim( $exif['Copyright'] ); + } + if ( ! empty( $exif['FNumber'] ) ) { $meta['aperture'] = round( wp_exif_frac2dec( $exif['FNumber'] ), 2 ); - if (!empty($exif['Model'])) + } + if ( ! empty( $exif['Model'] ) ) { $meta['camera'] = trim( $exif['Model'] ); - if (!empty($exif['DateTimeDigitized'])) - $meta['created_timestamp'] = wp_exif_date2ts($exif['DateTimeDigitized']); - if (!empty($exif['FocalLength'])) - $meta['focal_length'] = wp_exif_frac2dec( $exif['FocalLength'] ); - if (!empty($exif['ISOSpeedRatings'])) - $meta['iso'] = $exif['ISOSpeedRatings']; - if (!empty($exif['ExposureTime'])) - $meta['shutter_speed'] = wp_exif_frac2dec( $exif['ExposureTime'] ); + } + if ( empty( $meta['created_timestamp'] ) && ! empty( $exif['DateTimeDigitized'] ) ) { + $meta['created_timestamp'] = wp_exif_date2ts( $exif['DateTimeDigitized'] ); + } + if ( ! empty( $exif['FocalLength'] ) ) { + $meta['focal_length'] = (string) wp_exif_frac2dec( $exif['FocalLength'] ); + } + if ( ! empty( $exif['ISOSpeedRatings'] ) ) { + $meta['iso'] = is_array( $exif['ISOSpeedRatings'] ) ? reset( $exif['ISOSpeedRatings'] ) : $exif['ISOSpeedRatings']; + $meta['iso'] = trim( $meta['iso'] ); + } + if ( ! empty( $exif['ExposureTime'] ) ) { + $meta['shutter_speed'] = (string) wp_exif_frac2dec( $exif['ExposureTime'] ); + } + if ( ! empty( $exif['Orientation'] ) ) { + $meta['orientation'] = $exif['Orientation']; + } } - // FIXME: try other exif libraries if available + foreach ( array( 'title', 'caption', 'credit', 'copyright', 'camera', 'iso' ) as $key ) { + if ( $meta[ $key ] && ! seems_utf8( $meta[ $key ] ) ) { + $meta[ $key ] = utf8_encode( $meta[ $key ] ); + } + } + + /** + * Filter the array of meta data read from an image's exif data. + * + * @since 2.5.0 + * + * @param array $meta Image meta data. + * @param string $file Path to image file. + * @param int $sourceImageType Type of image. + */ return apply_filters( 'wp_read_image_metadata', $meta, $file, $sourceImageType ); } -// is the file a real image file? +/** + * Validate that file is an image. + * + * @since 2.5.0 + * + * @param string $path File path to test if valid image. + * @return bool True if valid image, false if not valid image. + */ function file_is_valid_image($path) { $size = @getimagesize($path); return !empty($size); } -// is the file an image suitable for displaying within a web page? +/** + * Validate that file is suitable for displaying within a web page. + * + * @since 2.5.0 + * + * @param string $path File path to test. + * @return bool True if suitable, false if not suitable. + */ function file_is_displayable_image($path) { - $info = @getimagesize($path); - if ( empty($info) ) - $result = false; - elseif ( !in_array($info[2], array(IMAGETYPE_GIF, IMAGETYPE_JPEG, IMAGETYPE_PNG)) ) - // only gif, jpeg and png images can reliably be displayed + $displayable_image_types = array( IMAGETYPE_GIF, IMAGETYPE_JPEG, IMAGETYPE_PNG, IMAGETYPE_BMP ); + + $info = @getimagesize( $path ); + if ( empty( $info ) ) { $result = false; - elseif ( $info['channels'] > 0 && $info['channels'] != 3 ) { - // some web browsers can't display cmyk or grayscale jpegs + } elseif ( ! in_array( $info[2], $displayable_image_types ) ) { $result = false; - } - else + } else { $result = true; - - return apply_filters('file_is_displayable_image', $result, $path); + } + + /** + * Filter whether the current image is displayable in the browser. + * + * @since 2.5.0 + * + * @param bool $result Whether the image can be displayed. Default true. + * @param string $path Path to the image. + */ + return apply_filters( 'file_is_displayable_image', $result, $path ); +} + +/** + * Load an image resource for editing. + * + * @since 2.9.0 + * + * @param string $attachment_id Attachment ID. + * @param string $mime_type Image mime type. + * @param string $size Optional. Image size, defaults to 'full'. + * @return resource|false The resulting image resource on success, false on failure. + */ +function load_image_to_edit( $attachment_id, $mime_type, $size = 'full' ) { + $filepath = _load_image_to_edit_path( $attachment_id, $size ); + if ( empty( $filepath ) ) + return false; + + switch ( $mime_type ) { + case 'image/jpeg': + $image = imagecreatefromjpeg($filepath); + break; + case 'image/png': + $image = imagecreatefrompng($filepath); + break; + case 'image/gif': + $image = imagecreatefromgif($filepath); + break; + default: + $image = false; + break; + } + if ( is_resource($image) ) { + /** + * Filter the current image being loaded for editing. + * + * @since 2.9.0 + * + * @param resource $image Current image. + * @param string $attachment_id Attachment ID. + * @param string $size Image size. + */ + $image = apply_filters( 'load_image_to_edit', $image, $attachment_id, $size ); + if ( function_exists('imagealphablending') && function_exists('imagesavealpha') ) { + imagealphablending($image, false); + imagesavealpha($image, true); + } + } + return $image; +} + +/** + * Retrieve the path or url of an attachment's attached file. + * + * If the attached file is not present on the local filesystem (usually due to replication plugins), + * then the url of the file is returned if url fopen is supported. + * + * @since 3.4.0 + * @access private + * + * @param string $attachment_id Attachment ID. + * @param string $size Optional. Image size, defaults to 'full'. + * @return string|false File path or url on success, false on failure. + */ +function _load_image_to_edit_path( $attachment_id, $size = 'full' ) { + $filepath = get_attached_file( $attachment_id ); + + if ( $filepath && file_exists( $filepath ) ) { + if ( 'full' != $size && ( $data = image_get_intermediate_size( $attachment_id, $size ) ) ) { + /** + * Filter the path to the current image. + * + * The filter is evaluated for all image sizes except 'full'. + * + * @since 3.1.0 + * + * @param string $path Path to the current image. + * @param string $attachment_id Attachment ID. + * @param string $size Size of the image. + */ + $filepath = apply_filters( 'load_image_to_edit_filesystempath', path_join( dirname( $filepath ), $data['file'] ), $attachment_id, $size ); + } + } elseif ( function_exists( 'fopen' ) && function_exists( 'ini_get' ) && true == ini_get( 'allow_url_fopen' ) ) { + /** + * Filter the image URL if not in the local filesystem. + * + * The filter is only evaluated if fopen is enabled on the server. + * + * @since 3.1.0 + * + * @param string $image_url Current image URL. + * @param string $attachment_id Attachment ID. + * @param string $size Size of the image. + */ + $filepath = apply_filters( 'load_image_to_edit_attachmenturl', wp_get_attachment_url( $attachment_id ), $attachment_id, $size ); + } + + /** + * Filter the returned path or URL of the current image. + * + * @since 2.9.0 + * + * @param string|bool $filepath File path or URL to current image, or false. + * @param string $attachment_id Attachment ID. + * @param string $size Size of the image. + */ + return apply_filters( 'load_image_to_edit_path', $filepath, $attachment_id, $size ); } -?> +/** + * Copy an existing image file. + * + * @since 3.4.0 + * @access private + * + * @param string $attachment_id Attachment ID. + * @return string|false New file path on success, false on failure. + */ +function _copy_image_file( $attachment_id ) { + $dst_file = $src_file = get_attached_file( $attachment_id ); + if ( ! file_exists( $src_file ) ) + $src_file = _load_image_to_edit_path( $attachment_id ); + + if ( $src_file ) { + $dst_file = str_replace( basename( $dst_file ), 'copy-' . basename( $dst_file ), $dst_file ); + $dst_file = dirname( $dst_file ) . '/' . wp_unique_filename( dirname( $dst_file ), basename( $dst_file ) ); + + /* + * The directory containing the original file may no longer + * exist when using a replication plugin. + */ + wp_mkdir_p( dirname( $dst_file ) ); + + if ( ! @copy( $src_file, $dst_file ) ) + $dst_file = false; + } else { + $dst_file = false; + } + + return $dst_file; +}