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;
}
}