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<?php
/*
* CWS Image Resizer v1.0
*
* (c) 2017 CWS Team
*
* Uses WP's Image Editor Class
*
* @param $url string the local image URL to manipulate
* @param $params array the options to perform on the image. Keys and values supported:
* 'width' int pixels
* 'height' int pixels
* 'crop' bool | array()
*/
if ( ! defined( 'ABSPATH' ) ) exit; // Exit if accessed directly
if(!function_exists('cws_thumb_get_id_from_url')) {
function cws_thumb_get_id_from_url($attachment_url) {
$attachment_id = '';
if (!empty($attachment_url)) {
$attachment_id = attachment_url_to_postid($attachment_url);
}
return $attachment_id;
}
}
if(!function_exists('cws_thumb_get_suffix')) {
function cws_thumb_get_suffix($width, $height, $crop, $attach_id) {
if (is_array($crop)){
$crop = $crop[0][0].$crop[1][0];
} else {
$crop = $crop ? '1' : '0';
}
return sprintf('%04x', $width) . sprintf('%04x', $height) . $crop . '_' .$attach_id;
}
}
if(!function_exists('cws_thumb')) {
function cws_thumb($url, $params) {
global $wp_filesystem;
if( empty( $wp_filesystem ) ) {
require_once( ABSPATH .'/wp-admin/includes/file.php' );
WP_Filesystem();
}
extract(shortcode_atts(array(
'width'=> '',
'height'=>'',
'crop' => false ), $params)
);
$attach_id = intval($url);
if (is_int($attach_id) && $attach_id == 0){
$attach_id = cws_thumb_get_id_from_url($url);
}
if (!$attach_id) { return null; }
list($src, $orig_image_width, $orig_image_height) = wp_get_attachment_image_src($attach_id, 'full');
if (empty($width) && empty($height)) {
$width = $orig_image_width;
$height = $orig_image_height;
}
if (!$crop) {
if (empty($width)) {
if($orig_image_height != 0 && $height != 0){
$width = (int)(($height / $orig_image_height) * $orig_image_width);
}
} else if (empty($height)) {
if ($orig_image_width && $orig_image_height){
$height = (int)(($width / $orig_image_width) * $orig_image_height);
}
}
} else {
if (empty($width)) {
$width = $height;
} else if (empty($height)) {
$height = $width;
}
}
$return_array = array($url, $width, $height, null);
$img_suffix = cws_thumb_get_suffix($width, $height, $crop, $attach_id);
$img_path = get_attached_file($attach_id);
$img_path_array = pathinfo($img_path);
if (empty($img_path)) return;
$new_img_path = $img_path_array['dirname'].'/'.$img_path_array['filename'].'_'.$img_suffix.'.'.$img_path_array['extension'];
$retina_new_img_path = $img_path_array['dirname'].'/'.$img_path_array['filename'].'_'.$img_suffix.'@2x.'.$img_path_array['extension'];
if($wp_filesystem->exists($new_img_path)) {
// check if there is a retina version
$retina_new_img_url = null;
if($wp_filesystem->exists($new_img_path)) {
$img_url = wp_get_attachment_url($attach_id);
$new_img_url = str_replace($img_path_array['basename'], $img_path_array['filename'].'_'.$img_suffix.'.'.$img_path_array['extension'], $img_url);
$retina_new_img_url = str_replace($img_path_array['basename'], $img_path_array['filename'].'_'.$img_suffix.'@2x.'.$img_path_array['extension'], $img_url);
if(!$wp_filesystem->exists($retina_new_img_path)) {
$retina_new_img_url = null;
}
}
return array($new_img_url, $width, $height, $retina_new_img_url);
}
if(!empty($attach_id)) {
// Retina Dimensions
$retina_width = (int)$width << 1;
$retina_height = (int)$height << 1;
$retina_thumb = true;
//Make sure we can get Retina
if ( ((isset($retina_width) && $retina_width > $orig_image_width) || (isset($retina_height) && $retina_height > $orig_image_height)) || ($retina_width == 0 && $retina_height == 0) ) {
$retina_thumb = false;
}
//Retina Dimensions
$img_path = get_attached_file($attach_id);
$img_url = wp_get_attachment_url($attach_id);
//Thumbnail path
$new_img_url = str_replace($img_path_array['basename'], $img_path_array['filename'].'_'.$img_suffix.'.'.$img_path_array['extension'], $img_url);
$retina_new_img_url = str_replace($img_path_array['basename'], $img_path_array['filename'].'_'.$img_suffix.'@2x.'.$img_path_array['extension'], $img_url);
//Get image object
$image_object = wp_get_image_editor($img_path);
if(!is_wp_error($image_object)) {
//Resize and save
$image_object->resize(isset( $width ) ? $width : null, isset( $height ) ? $height : null, isset( $crop ) ? $crop : false);
$image_object->save($new_img_path);
//Get sizes of new image object
$image_sizes = $image_object->get_size();
$image_width = $image_sizes['width'];
$image_height = $image_sizes['height'];
} else {
$error_string = $image_object->get_error_message();
echo '<div id="message" class="error"><p>Error: ' . $error_string . ' <br>Please make sure the PHP GD library is properly installed.</p></div>';
}
if ( $retina_thumb ) {
//Get image object (Retina)
$retina_object = wp_get_image_editor($img_path);
if(!is_wp_error($retina_object)) {
//Resize and save
if ( ( isset( $retina_width ) && $retina_width ) || ( isset( $retina_height ) && $retina_height ) ) {
$retina_object->resize(isset( $retina_width ) ? $retina_width : null, isset( $retina_height ) ? $retina_height : null, isset( $crop ) ? $crop : false);
$retina_object->save($retina_new_img_path);
}
}
} else {
$retina_new_img_url = null;
}
// Data to return
$return_array = array (
0 => $new_img_url,
1 => isset($image_width) ? $image_width : $orig_image_width,
2 => isset($image_height) ? $image_height : $orig_image_height,
3 => $retina_new_img_url,
);
}
return $return_array;
}
}
?>