BFI_Thumb_1_3()
Methods
- base_convert_arbitrary — Shortens a number into a base 36 string
- base_convert_arbitrary — Shortens a number into a base 36 string
- base_convert_arbitrary — Shortens a number into a base 36 string
- thumb — Uses WP's Image Editor Class to resize and filter images Inspired by: https://github.com/sy4mil/Aqua-Resizer/blob/master/aq_resizer.php
- thumb — Uses WP's Image Editor Class to resize and filter images Inspired by: https://github.com/sy4mil/Aqua-Resizer/blob/master/aq_resizer.php
- thumb — Uses WP's Image Editor Class to resize and filter images Inspired by: https://github.com/sy4mil/Aqua-Resizer/blob/master/aq_resizer.php
Source
includes/libraries/bfi-thumb/bfi-thumb.php
class BFI_Thumb_1_3 { /** Uses WP's Image Editor Class to resize and filter images * Inspired by: https://github.com/sy4mil/Aqua-Resizer/blob/master/aq_resizer.php * * @param $url string the local image URL to manipulate * @param $params array the options to perform on the image. Keys and values supported: * 'width' int pixels * 'height' int pixels * 'opacity' int 0-100 * 'color' string hex-color #000000-#ffffff * 'grayscale' bool * 'crop' bool * 'negate' bool * 'crop_only' bool * 'crop_x' bool string * 'crop_y' bool string * 'crop_width' bool string * 'crop_height' bool string * 'quality' int 1-100 * @param $single boolean, if false then an array of data will be returned * * @return string|array */ public static function thumb( $url, $params = array(), $single = true ) { extract( $params ); //validate inputs if ( ! $url ) { return false; } $crop_only = isset( $crop_only ) ? $crop_only : false; //define upload path & dir $upload_info = wp_upload_dir(); $upload_dir = $upload_info['basedir']; $upload_url = $upload_info['baseurl']; $theme_url = get_template_directory_uri(); $theme_dir = get_template_directory(); // find the path of the image. Perform 2 checks: // #1 check if the image is in the uploads folder if ( strpos( $url, $upload_url ) !== false ) { $rel_path = str_replace( $upload_url, '', $url ); $img_path = $upload_dir . $rel_path; // #2 check if the image is in the current theme folder } else if ( strpos( $url, $theme_url ) !== false ) { $rel_path = str_replace( $theme_url, '', $url ); $img_path = $theme_dir . $rel_path; } // Fail if we can't find the image in our WP local directory if ( empty( $img_path ) ) { return $url; } // check if img path exists, and is an image indeed if ( ! @file_exists( $img_path ) || ! getimagesize( $img_path ) ) { return $url; } // This is the filename $basename = basename( $img_path ); //get image info $info = pathinfo( $img_path ); $ext = $info['extension']; list( $orig_w, $orig_h ) = getimagesize( $img_path ); // support percentage dimensions. compute percentage based on // the original dimensions if ( isset( $width ) ) { if ( stripos( $width, '%' ) !== false ) { $width = (int) ( (float) str_replace( '%', '', $width ) / 100 * $orig_w ); } } if ( isset( $height ) ) { if ( stripos( $height, '%' ) !== false ) { $height = (int) ( (float) str_replace( '%', '', $height ) / 100 * $orig_h ); } } // The only purpose of this is to determine the final width and height // without performing any actual image manipulation, which will be used // to check whether a resize was previously done. if ( isset( $width ) && $crop_only === false ) { //get image size after cropping $dims = image_resize_dimensions( $orig_w, $orig_h, $width, isset( $height ) ? $height : null, isset( $crop ) ? $crop : false ); $dst_w = $dims[4]; $dst_h = $dims[5]; } else if ( $crop_only === true ) { // we don't want a resize, // but only a crop in the image // get x position to start croping $src_x = ( isset( $crop_x ) ) ? $crop_x : 0; // get y position to start croping $src_y = ( isset( $crop_y ) ) ? $crop_y : 0; // width of the crop if ( isset( $crop_width ) ) { $src_w = $crop_width; } else if ( isset( $width ) ) { $src_w = $width; } else { $src_w = $orig_w; } // height of the crop if ( isset( $crop_height ) ) { $src_h = $crop_height; } else if ( isset( $height ) ) { $src_h = $height; } else { $src_h = $orig_h; } // set the width resize with the crop if ( isset( $crop_width ) && isset( $width ) ) { $dst_w = $width; } else { $dst_w = null; } // set the height resize with the crop if ( isset( $crop_height ) && isset( $height ) ) { $dst_h = $height; } else { $dst_h = null; } // allow percentages if ( isset( $dst_w ) ) { if ( stripos( $dst_w, '%' ) !== false ) { $dst_w = (int) ( (float) str_replace( '%', '', $dst_w ) / 100 * $orig_w ); } } if ( isset( $dst_h ) ) { if ( stripos( $dst_h, '%' ) !== false ) { $dst_h = (int) ( (float) str_replace( '%', '', $dst_h ) / 100 * $orig_h ); } } $dims = image_resize_dimensions( $src_w, $src_h, $dst_w, $dst_h, false ); $dst_w = $dims[4]; $dst_h = $dims[5]; // Make the pos x and pos y work with percentages if ( stripos( $src_x, '%' ) !== false ) { $src_x = (int) ( (float) str_replace( '%', '', $width ) / 100 * $orig_w ); } if ( stripos( $src_y, '%' ) !== false ) { $src_y = (int) ( (float) str_replace( '%', '', $height ) / 100 * $orig_h ); } // allow center to position crop start if ( $src_x === 'center' ) { $src_x = ( $orig_w - $src_w ) / 2; } if ( $src_y === 'center' ) { $src_y = ( $orig_h - $src_h ) / 2; } } // create the suffix for the saved file // we can use this to check whether we need to create a new file or just use an existing one. $suffix = (string) filemtime( $img_path ) . ( isset( $width ) ? str_pad( (string) $width, 5, '0', STR_PAD_LEFT ) : '00000' ) . ( isset( $height ) ? str_pad( (string) $height, 5, '0', STR_PAD_LEFT ) : '00000' ) . ( isset( $opacity ) ? str_pad( (string) $opacity, 3, '0', STR_PAD_LEFT ) : '100' ) . ( isset( $color ) ? str_pad( preg_replace( '#^\##', '', $color ), 8, '0', STR_PAD_LEFT ) : '00000000' ) . ( isset( $grayscale ) ? ( $grayscale ? '1' : '0' ) : '0' ) . ( isset( $crop ) ? ( $crop ? '1' : '0' ) : '0' ) . ( isset( $negate ) ? ( $negate ? '1' : '0' ) : '0' ) . ( isset( $crop_only ) ? ( $crop_only ? '1' : '0' ) : '0' ) . ( isset( $src_x ) ? str_pad( (string) $src_x, 5, '0', STR_PAD_LEFT ) : '00000' ) . ( isset( $src_y ) ? str_pad( (string) $src_y, 5, '0', STR_PAD_LEFT ) : '00000' ) . ( isset( $src_w ) ? str_pad( (string) $src_w, 5, '0', STR_PAD_LEFT ) : '00000' ) . ( isset( $src_h ) ? str_pad( (string) $src_h, 5, '0', STR_PAD_LEFT ) : '00000' ) . ( isset( $dst_w ) ? str_pad( (string) $dst_w, 5, '0', STR_PAD_LEFT ) : '00000' ) . ( isset( $dst_h ) ? str_pad( (string) $dst_h, 5, '0', STR_PAD_LEFT ) : '00000' ) . ( ( isset ( $quality ) && $quality > 0 && $quality <= 100 ) ? ( $quality ? (string) $quality : '0' ) : '0' ); $suffix = self::base_convert_arbitrary( $suffix, 10, 36 ); // use this to check if cropped image already exists, so we can return that instead $dst_rel_path = str_replace( '.' . $ext, '', basename( $img_path ) ); // If opacity is set, change the image type to png if ( isset( $opacity ) ) { $ext = 'png'; } // Create the upload subdirectory, this is where // we store all our generated images if ( defined( 'BFITHUMB_UPLOAD_DIR' ) ) { $upload_dir .= "/" . BFITHUMB_UPLOAD_DIR; $upload_url .= "/" . BFITHUMB_UPLOAD_DIR; } else { $upload_dir .= "/bfi_thumb"; $upload_url .= "/bfi_thumb"; } if ( ! is_dir( $upload_dir ) ) { wp_mkdir_p( $upload_dir ); } // desination paths and urls $destfilename = "{$upload_dir}/{$dst_rel_path}-{$suffix}.{$ext}"; // The urls generated have lower case extensions regardless of the original case $ext = strtolower( $ext ); $img_url = "{$upload_url}/{$dst_rel_path}-{$suffix}.{$ext}"; // if file exists, just return it if ( @file_exists( $destfilename ) && getimagesize( $destfilename ) ) { } else { // perform resizing and other filters $editor = wp_get_image_editor( $img_path ); if ( is_wp_error( $editor ) ) { return false; } /* * Perform image manipulations */ if ( $crop_only === false ) { if ( ( isset( $width ) && $width ) || ( isset( $height ) && $height ) ) { if ( is_wp_error( $editor->resize( isset( $width ) ? $width : null, isset( $height ) ? $height : null, isset( $crop ) ? $crop : false ) ) ) { return false; } } } else { if ( is_wp_error( $editor->crop( $src_x, $src_y, $src_w, $src_h, $dst_w, $dst_h ) ) ) { return false; } } if ( isset( $negate ) ) { if ( $negate ) { if ( is_wp_error( $editor->negate() ) ) { return false; } } } if ( isset( $opacity ) ) { if ( is_wp_error( $editor->opacity( $opacity ) ) ) { return false; } } if ( isset( $grayscale ) ) { if ( $grayscale ) { if ( is_wp_error( $editor->grayscale() ) ) { return false; } } } if ( isset( $color ) ) { if ( is_wp_error( $editor->colorize( $color ) ) ) { return false; } } // set the image quality (1-100) to save this image at if ( isset( $quality ) && $quality > 0 && $quality <= 100 && $ext != 'png' ) { $editor->set_quality( $quality ); } // save our new image $mime_type = isset( $opacity ) ? 'image/png' : null; $resized_file = $editor->save( $destfilename, $mime_type ); } //return the output if ( $single ) { $image = $img_url; } else { //array return $image = array( 0 => $img_url, 1 => isset( $dst_w ) ? $dst_w : $orig_w, 2 => isset( $dst_h ) ? $dst_h : $orig_h, ); } return $image; } /** Shortens a number into a base 36 string * * @param $number string a string of numbers to convert * @param $fromBase starting base * @param $toBase base to convert the number to * * @return string base converted characters */ protected static function base_convert_arbitrary( $number, $fromBase, $toBase ) { $digits = '0123456789abcdefghijklmnopqrstuvwxyz'; $length = strlen( $number ); $result = ''; $nibbles = array(); for ( $i = 0; $i < $length; ++$i ) { $nibbles[ $i ] = strpos( $digits, $number[ $i ] ); } do { $value = 0; $newlen = 0; for ( $i = 0; $i < $length; ++$i ) { $value = $value * $fromBase + $nibbles[ $i ]; if ( $value >= $toBase ) { $nibbles[ $newlen++ ] = (int) ( $value / $toBase ); $value %= $toBase; } else if ( $newlen > 0 ) { $nibbles[ $newlen++ ] = 0; } } $length = $newlen; $result = $digits[ $value ] . $result; } while ( $newlen != 0 ); return $result; } }