845 lines
28 KiB
PHP
845 lines
28 KiB
PHP
<?php
|
|
/*
|
|
* bfi_thumb - WP Image Resizer v1.3
|
|
*
|
|
* (c) 2013 Benjamin F. Intal / Gambit
|
|
*
|
|
* This program is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
/** Uses WP's Image Editor Class to resize and filter images
|
|
*
|
|
* @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
|
|
* 'negate' bool
|
|
* 'crop' 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 containing the url of the resized modified image
|
|
*/
|
|
|
|
if ( ! defined( 'ABSPATH' ) ) exit; // Exit if accessed directly
|
|
|
|
if ( ! function_exists( 'bfi_thumb' ) ) {
|
|
|
|
function bfi_thumb( $url, $params = array(), $single = true ) {
|
|
$class = BFI_Class_Factory::getNewestVersion( 'BFI_Thumb' );
|
|
return call_user_func( array( $class, 'thumb' ), $url, $params, $single );
|
|
}
|
|
|
|
}
|
|
|
|
|
|
/**
|
|
* Class factory, this is to make sure that when multiple bfi_thumb scripts
|
|
* are used (e.g. a plugin and a theme both use it), we always use the
|
|
* latest version.
|
|
*/
|
|
if ( ! class_exists( 'BFI_Class_Factory' ) ) {
|
|
|
|
class BFI_Class_Factory {
|
|
|
|
public static $versions = array();
|
|
public static $latestClass = array();
|
|
|
|
|
|
public static function addClassVersion( $baseClassName, $className, $version ) {
|
|
if ( empty( self::$versions[ $baseClassName ] ) ) {
|
|
self::$versions[ $baseClassName ] = array();
|
|
}
|
|
self::$versions[ $baseClassName ][] = array(
|
|
'class' => $className,
|
|
'version' => $version
|
|
);
|
|
}
|
|
|
|
|
|
public static function getNewestVersion( $baseClassName ) {
|
|
if ( empty( self::$latestClass[ $baseClassName ] ) ) {
|
|
usort( self::$versions[ $baseClassName ], array( __CLASS__, "versionCompare" ) );
|
|
self::$latestClass[ $baseClassName ] = self::$versions[ $baseClassName ][0]['class'];
|
|
unset( self::$versions[ $baseClassName ] );
|
|
}
|
|
return self::$latestClass[ $baseClassName ];
|
|
}
|
|
|
|
|
|
public static function versionCompare( $a, $b ) {
|
|
return version_compare( $a['version'], $b['version'] ) == 1 ? -1 : 1;
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
* Change the default image editors
|
|
*/
|
|
add_filter( 'wp_image_editors', 'bfi_wp_image_editor' );
|
|
|
|
// Instead of using the default image editors, use our extended ones
|
|
if ( ! function_exists( 'bfi_wp_image_editor' ) ) {
|
|
|
|
function bfi_wp_image_editor( $editorArray ) {
|
|
// Make sure that we use the latest versions
|
|
return array(
|
|
BFI_Class_Factory::getNewestVersion( 'BFI_Image_Editor_GD' ),
|
|
BFI_Class_Factory::getNewestVersion( 'BFI_Image_Editor_Imagick' ),
|
|
);
|
|
}
|
|
|
|
}
|
|
|
|
|
|
/*
|
|
* Include the WP Image classes
|
|
*/
|
|
|
|
require_once ABSPATH . WPINC . '/class-wp-image-editor.php';
|
|
require_once ABSPATH . WPINC . '/class-wp-image-editor-imagick.php';
|
|
require_once ABSPATH . WPINC . '/class-wp-image-editor-gd.php';
|
|
|
|
|
|
/**
|
|
* check for ImageMagick or GD
|
|
*/
|
|
|
|
|
|
add_action( 'admin_init', 'bfi_wp_image_editor_check' );
|
|
if ( ! function_exists( 'bfi_wp_image_editor_check' ) ) {
|
|
|
|
function bfi_wp_image_editor_check() {
|
|
$arg = array( 'mime_type' => 'image/jpeg' );
|
|
if ( wp_image_editor_supports( $arg ) !== true ) {
|
|
add_filter( 'admin_notices', 'bfi_wp_image_editor_check_notice' );
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
if ( ! function_exists( 'bfi_wp_image_editor_check_notice' ) ) {
|
|
function bfi_wp_image_editor_check_notice() {
|
|
printf( "<div class='error'><p>%s</div>",
|
|
__( "The server does not have ImageMagick or GD installed and/or enabled! Any of these libraries are required for WordPress to be able to resize images. Please contact your server administrator to enable this before continuing.", "default" ) );
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
* Enhanced Imagemagick Image Editor
|
|
*/
|
|
|
|
|
|
if ( ! class_exists( 'BFI_Image_Editor_Imagick_1_3' ) ) {
|
|
|
|
BFI_Class_Factory::addClassVersion( 'BFI_Image_Editor_Imagick', 'BFI_Image_Editor_Imagick_1_3', '1.3' );
|
|
|
|
|
|
class BFI_Image_Editor_Imagick_1_3 extends WP_Image_Editor_Imagick {
|
|
|
|
/** Changes the opacity of the image
|
|
*
|
|
* @supports 3.5.1
|
|
* @access public
|
|
*
|
|
* @param float $opacity (0.0-1.0)
|
|
* @return boolean|WP_Error
|
|
*/
|
|
public function opacity( $opacity ) {
|
|
$opacity /= 100;
|
|
|
|
try {
|
|
// From: http://stackoverflow.com/questions/3538851/php-imagick-setimageopacity-destroys-transparency-and-does-nothing
|
|
// preserves transparency
|
|
//$this->image->setImageOpacity($opacity);
|
|
return $this->image->evaluateImage( Imagick::EVALUATE_MULTIPLY, $opacity, Imagick::CHANNEL_ALPHA );
|
|
|
|
} catch ( Exception $e ) {
|
|
return new WP_Error( 'image_opacity_error', $e->getMessage() );
|
|
}
|
|
}
|
|
|
|
|
|
/** Tints the image a different color
|
|
*
|
|
* @supports 3.5.1
|
|
* @access public
|
|
*
|
|
* @param string hex color e.g. #ff00ff
|
|
* @return boolean|WP_Error
|
|
*/
|
|
public function colorize( $hexColor ) {
|
|
try {
|
|
return $this->image->colorizeImage( $hexColor, 1.0 );
|
|
} catch ( Exception $e ) {
|
|
return new WP_Error( 'image_colorize_error', $e->getMessage() );
|
|
}
|
|
}
|
|
|
|
|
|
/** Makes the image grayscale
|
|
*
|
|
* @supports 3.5.1
|
|
* @access public
|
|
*
|
|
* @return boolean|WP_Error
|
|
*/
|
|
public function grayscale() {
|
|
try {
|
|
return $this->image->modulateImage( 100, 0, 100 );
|
|
} catch ( Exception $e ) {
|
|
return new WP_Error( 'image_grayscale_error', $e->getMessage() );
|
|
}
|
|
}
|
|
|
|
|
|
/** Negates the image
|
|
*
|
|
* @supports 3.5.1
|
|
* @access public
|
|
*
|
|
* @return boolean|WP_Error
|
|
*/
|
|
public function negate() {
|
|
try {
|
|
return $this->image->negateImage( false );
|
|
} catch ( Exception $e ) {
|
|
return new WP_Error( 'image_negate_error', $e->getMessage() );
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
* Enhanced GD Image Editor
|
|
*/
|
|
|
|
|
|
if ( ! class_exists( 'BFI_Image_Editor_GD_1_3' ) ) {
|
|
|
|
BFI_Class_Factory::addClassVersion( 'BFI_Image_Editor_GD', 'BFI_Image_Editor_GD_1_3', '1.3' );
|
|
|
|
class BFI_Image_Editor_GD_1_3 extends WP_Image_Editor_GD {
|
|
|
|
/** Rotates current image counter-clockwise by $angle.
|
|
* Ported from image-edit.php
|
|
* Added presevation of alpha channels
|
|
*
|
|
* @since 3.5.0
|
|
* @access public
|
|
*
|
|
* @param float $angle
|
|
* @return boolean|WP_Error
|
|
*/
|
|
public function rotate( $angle ) {
|
|
if ( function_exists('imagerotate') ) {
|
|
$rotated = imagerotate( $this->image, $angle, 0 );
|
|
|
|
// Add alpha blending
|
|
imagealphablending( $rotated, true );
|
|
imagesavealpha( $rotated, true );
|
|
|
|
if ( is_resource( $rotated ) ) {
|
|
imagedestroy( $this->image );
|
|
$this->image = $rotated;
|
|
$this->update_size();
|
|
return true;
|
|
}
|
|
}
|
|
|
|
return new WP_Error( 'image_rotate_error', __( 'Image rotate failed.', 'default' ), $this->file );
|
|
}
|
|
|
|
|
|
/** Changes the opacity of the image
|
|
*
|
|
* @supports 3.5.1
|
|
* @access public
|
|
*
|
|
* @param float $opacity (0.0-1.0)
|
|
* @return boolean|WP_Error
|
|
*/
|
|
public function opacity( $opacity ) {
|
|
$opacity /= 100;
|
|
|
|
$filtered = $this->_opacity( $this->image, $opacity );
|
|
|
|
if ( is_resource( $filtered ) ) {
|
|
// imagedestroy($this->image);
|
|
$this->image = $filtered;
|
|
return true;
|
|
}
|
|
|
|
return new WP_Error( 'image_opacity_error', __('Image opacity change failed.', 'default' ), $this->file );
|
|
}
|
|
|
|
|
|
// from: http://php.net/manual/en/function.imagefilter.php
|
|
// params: image resource id, opacity (eg. 0.0-1.0)
|
|
protected function _opacity( $image, $opacity ) {
|
|
if ( ! function_exists( 'imagealphablending' ) ||
|
|
! function_exists( 'imagecolorat' ) ||
|
|
! function_exists( 'imagecolorallocatealpha' ) ||
|
|
! function_exists( 'imagesetpixel' ) ) {
|
|
return false;
|
|
}
|
|
|
|
// get image width and height
|
|
$w = imagesx( $image );
|
|
$h = imagesy( $image );
|
|
|
|
// turn alpha blending off
|
|
imagealphablending( $image, false );
|
|
|
|
// find the most opaque pixel in the image (the one with the smallest alpha value)
|
|
$minalpha = 127;
|
|
for ( $x = 0; $x < $w; $x++ ) {
|
|
for ( $y = 0; $y < $h; $y++ ) {
|
|
$alpha = ( imagecolorat( $image, $x, $y ) >> 24 ) & 0xFF;
|
|
if ( $alpha < $minalpha ) {
|
|
$minalpha = $alpha;
|
|
}
|
|
}
|
|
}
|
|
|
|
// loop through image pixels and modify alpha for each
|
|
for ( $x = 0; $x < $w; $x++ ) {
|
|
for ( $y = 0; $y < $h; $y++ ) {
|
|
|
|
// get current alpha value (represents the TANSPARENCY!)
|
|
$colorxy = imagecolorat( $image, $x, $y );
|
|
$alpha = ( $colorxy >> 24 ) & 0xFF;
|
|
|
|
// calculate new alpha
|
|
if ( $minalpha !== 127 ) {
|
|
$alpha = 127 + 127 * $opacity * ( $alpha - 127 ) / ( 127 - $minalpha );
|
|
} else {
|
|
$alpha += 127 * $opacity;
|
|
}
|
|
|
|
// get the color index with new alpha
|
|
$alphacolorxy = imagecolorallocatealpha( $image, ( $colorxy >> 16 ) & 0xFF, ( $colorxy >> 8 ) & 0xFF, $colorxy & 0xFF, $alpha );
|
|
|
|
// set pixel with the new color + opacity
|
|
if( ! imagesetpixel( $image, $x, $y, $alphacolorxy ) ) {
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
|
|
imagesavealpha( $image, true );
|
|
|
|
return $image;
|
|
}
|
|
|
|
|
|
/** Tints the image a different color
|
|
*
|
|
* @supports 3.5.1
|
|
* @access public
|
|
*
|
|
* @param string hex color e.g. #ff00ff
|
|
* @return boolean|WP_Error
|
|
*/
|
|
public function colorize( $hexColor ) {
|
|
if ( function_exists( 'imagefilter' ) &&
|
|
function_exists( 'imagesavealpha' ) &&
|
|
function_exists( 'imagealphablending' ) ) {
|
|
|
|
$hexColor = preg_replace( '#^\##', '', $hexColor );
|
|
$r = hexdec( substr( $hexColor, 0, 2 ) );
|
|
$g = hexdec( substr( $hexColor, 2, 2 ) );
|
|
$b = hexdec( substr( $hexColor, 2, 2 ) );
|
|
|
|
imagealphablending( $this->image, false );
|
|
if ( imagefilter( $this->image, IMG_FILTER_COLORIZE, $r, $g, $b, 0 ) ) {
|
|
imagesavealpha( $this->image, true );
|
|
return true;
|
|
}
|
|
}
|
|
return new WP_Error( 'image_colorize_error', __( 'Image color change failed.', 'default' ), $this->file );
|
|
}
|
|
|
|
|
|
/** Makes the image grayscale
|
|
*
|
|
* @supports 3.5.1
|
|
* @access public
|
|
*
|
|
* @return boolean|WP_Error
|
|
*/
|
|
public function grayscale() {
|
|
if ( function_exists( 'imagefilter' ) ) {
|
|
if ( imagefilter( $this->image, IMG_FILTER_GRAYSCALE ) ) {
|
|
return true;
|
|
}
|
|
}
|
|
return new WP_Error( 'image_grayscale_error', __( 'Image grayscale failed.', 'default' ), $this->file );
|
|
}
|
|
|
|
|
|
/** Negates the image
|
|
*
|
|
* @supports 3.5.1
|
|
* @access public
|
|
*
|
|
* @return boolean|WP_Error
|
|
*/
|
|
public function negate() {
|
|
if ( function_exists( 'imagefilter' ) ) {
|
|
if ( imagefilter( $this->image, IMG_FILTER_NEGATE ) ) {
|
|
return true;
|
|
}
|
|
}
|
|
return new WP_Error( 'image_negate_error', __( 'Image negate failed.', 'default' ), $this->file );
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
* Main Class
|
|
*/
|
|
if ( ! class_exists( 'BFI_Thumb_1_3' ) ) {
|
|
|
|
BFI_Class_Factory::addClassVersion( 'BFI_Thumb', 'BFI_Thumb_1_3', '1.3' );
|
|
|
|
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;
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
|
|
// don't use the default resizer since we want to allow resizing to larger sizes (than the original one)
|
|
// Parts are copied from media.php
|
|
// Crop is always applied (just like timthumb)
|
|
// Don't use this inside the admin since sometimes images in the media library get resized
|
|
if ( ! is_admin() ) {
|
|
add_filter( 'image_resize_dimensions', 'bfi_image_resize_dimensions', 10, 5 );
|
|
}
|
|
|
|
if ( ! function_exists( 'bfi_image_resize_dimensions' ) ) {
|
|
function bfi_image_resize_dimensions( $payload, $orig_w, $orig_h, $dest_w, $dest_h, $crop = false ) {
|
|
$aspect_ratio = $orig_w / $orig_h;
|
|
|
|
$new_w = $dest_w;
|
|
$new_h = $dest_h;
|
|
|
|
if ( empty( $new_w ) || $new_w < 0 ) {
|
|
$new_w = intval( $new_h * $aspect_ratio );
|
|
}
|
|
|
|
if ( empty( $new_h ) || $new_h < 0 ) {
|
|
$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 );
|
|
|
|
// Safe guard against super large or zero images which might cause 500 errors
|
|
if ( $new_w > 5000 || $new_h > 5000 || $new_w <= 0 || $new_h <= 0 ) {
|
|
return null;
|
|
}
|
|
|
|
// 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 );
|
|
}
|
|
}
|
|
|
|
|
|
// This function allows us to latch on WP image functions such as
|
|
// post_thumbnail, get_image_tag and wp_get_attachment_image_src
|
|
// so that you won't have to use the function bfi_thumb in order to do resizing.
|
|
// To make this work, in the WP image functions, when specifying an
|
|
// array for the image dimensions, add a 'bfi_thumb' => true to
|
|
// the array, then add your normal $params arguments.
|
|
//
|
|
// e.g. post_thumbnail( array( 1024, 400, 'bfi_thumb' => true, 'grayscale' => true ) );
|
|
add_filter( 'image_downsize', 'bfi_image_downsize', 1, 3 );
|
|
|
|
if ( ! function_exists( 'bfi_image_downsize' ) ) {
|
|
function bfi_image_downsize( $out, $id, $size ) {
|
|
if ( ! is_array( $size ) ) {
|
|
return false;
|
|
}
|
|
if ( ! array_key_exists( 'bfi_thumb', $size ) ) {
|
|
return false;
|
|
}
|
|
if ( empty( $size['bfi_thumb'] ) ) {
|
|
return false;
|
|
}
|
|
|
|
$img_url = wp_get_attachment_url( $id );
|
|
|
|
$params = $size;
|
|
$params['width'] = $size[0];
|
|
$params['height'] = $size[1];
|
|
|
|
$resized_img_url = bfi_thumb( $img_url, $params );
|
|
|
|
return array( $resized_img_url, $size[0], $size[1], false );
|
|
}
|
|
}
|