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205 lines
7.8 KiB
PHP
205 lines
7.8 KiB
PHP
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<?php
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/* Provider: - *
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* Title : Aqua Resizer
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* Description : Resizes WordPress images on the fly
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* Version : 1.2.0
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* Author : Syamil MJ
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* Author URI : http://aquagraphite.com
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* License : WTFPL - http://sam.zoy.org/wtfpl/
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* Documentation : https://github.com/sy4mil/Aqua-Resizer/
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*
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* @param string $url - (required) must be uploaded using wp media uploader
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* @param int $width - (required)
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* @param int $height - (optional)
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* @param bool $crop - (optional) default to soft crop
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* @param bool $single - (optional) returns an array if false
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* @uses wp_upload_dir()
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* @uses image_resize_dimensions()
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* @uses wp_get_image_editor()
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*
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* @return str|array
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*/
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if( !defined( 'ABSPATH') ) exit();
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if(!class_exists('Rev_Aq_Resize')) {
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class Rev_Aq_Resize
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{
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/* Provider: - *
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* The singleton instance
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*/
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static private $instance = null;
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/* Provider: - *
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* No initialization allowed
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*/
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private function __construct() {}
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/* Provider: - *
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* No cloning allowed
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*/
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private function __clone() {}
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/* Provider: - *
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* For your custom default usage you may want to initialize an Aq_Resize object by yourself and then have own defaults
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*/
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static public function getInstance() {
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if(self::$instance == null) {
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self::$instance = new self;
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}
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return self::$instance;
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}
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/* Provider: - *
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* Run, forest.
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*/
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public function process( $url, $width = null, $height = null, $crop = null, $single = true, $upscale = false ) {
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// Validate inputs.
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if ( ! $url || ( ! $width && ! $height ) ) return false;
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// Caipt'n, ready to hook.
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if ( true === $upscale ) add_filter( 'image_resize_dimensions', array($this, 'aq_upscale'), 10, 6 );
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// Define upload path & dir.
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$upload_info = wp_upload_dir();
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$upload_dir = $upload_info['basedir'];
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$upload_url = $upload_info['baseurl'];
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$http_prefix = "http://";
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$https_prefix = "https://";
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/* Provider: - if the $url scheme differs from $upload_url scheme, make them match
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if the schemes differe, images don't show up. */
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if(!strncmp($url,$https_prefix,strlen($https_prefix))){ //if url begins with https:// make $upload_url begin with https:// as well
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$upload_url = str_replace($http_prefix,$https_prefix,$upload_url);
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}
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elseif(!strncmp($url,$http_prefix,strlen($http_prefix))){ //if url begins with http:// make $upload_url begin with http:// as well
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$upload_url = str_replace($https_prefix,$http_prefix,$upload_url);
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}
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// Check if $img_url is local.
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if ( false === strpos( $url, $upload_url ) ) return false;
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// Define path of image.
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$rel_path = str_replace( $upload_url, '', $url );
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$img_path = $upload_dir . $rel_path;
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// Check if img path exists, and is an image indeed.
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if ( ! file_exists( $img_path ) or ! getimagesize( $img_path ) ) return false;
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// Get image info.
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$info = pathinfo( $img_path );
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$ext = $info['extension'];
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list( $orig_w, $orig_h ) = getimagesize( $img_path );
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// Get image size after cropping.
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$dims = image_resize_dimensions( $orig_w, $orig_h, $width, $height, $crop );
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$dst_w = $dims[4];
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$dst_h = $dims[5];
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// Return the original image only if it exactly fits the needed measures.
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if ( ! $dims && ( ( ( null === $height && $orig_w == $width ) xor ( null === $width && $orig_h == $height ) ) xor ( $height == $orig_h && $width == $orig_w ) ) ) {
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$img_url = $url;
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$dst_w = $orig_w;
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$dst_h = $orig_h;
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} else {
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// Use this to check if cropped image already exists, so we can return that instead.
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$suffix = "{$dst_w}x{$dst_h}";
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$dst_rel_path = str_replace( '.' . $ext, '', $rel_path );
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$destfilename = "{$upload_dir}{$dst_rel_path}-{$suffix}.{$ext}";
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if ( ! $dims || ( true == $crop && false == $upscale && ( $dst_w < $width || $dst_h < $height ) ) ) {
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// Can't resize, so return false saying that the action to do could not be processed as planned.
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return false;
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}
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// Else check if cache exists.
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elseif ( file_exists( $destfilename ) && getimagesize( $destfilename ) ) {
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$img_url = "{$upload_url}{$dst_rel_path}-{$suffix}.{$ext}";
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}
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// Else, we resize the image and return the new resized image url.
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else {
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$editor = wp_get_image_editor( $img_path );
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if ( is_wp_error( $editor ) || is_wp_error( $editor->resize( $width, $height, $crop ) ) )
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return false;
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$resized_file = $editor->save();
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if ( ! is_wp_error( $resized_file ) ) {
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$resized_rel_path = str_replace( $upload_dir, '', $resized_file['path'] );
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$img_url = $upload_url . $resized_rel_path;
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} else {
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return false;
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}
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}
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}
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// Okay, leave the ship.
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if ( true === $upscale ) remove_filter( 'image_resize_dimensions', array( $this, 'aq_upscale' ) );
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// Return the output.
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if ( $single ) {
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// str return.
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$image = $img_url;
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} else {
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// array return.
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$image = array (
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0 => $img_url,
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1 => $dst_w,
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2 => $dst_h
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);
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}
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return $image;
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}
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/* Provider: - *
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* Callback to overwrite WP computing of thumbnail measures
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*/
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function aq_upscale( $default, $orig_w, $orig_h, $dest_w, $dest_h, $crop ) {
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if ( ! $crop ) return null; // Let the wordpress default function handle this.
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// Here is the point we allow to use larger image size than the original one.
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$aspect_ratio = $orig_w / $orig_h;
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$new_w = $dest_w;
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$new_h = $dest_h;
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if ( ! $new_w ) {
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$new_w = intval( $new_h * $aspect_ratio );
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}
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if ( ! $new_h ) {
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$new_h = intval( $new_w / $aspect_ratio );
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}
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$size_ratio = max( $new_w / $orig_w, $new_h / $orig_h );
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$crop_w = round( $new_w / $size_ratio );
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$crop_h = round( $new_h / $size_ratio );
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$s_x = floor( ( $orig_w - $crop_w ) / 2 );
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$s_y = floor( ( $orig_h - $crop_h ) / 2 );
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return array( 0, 0, (int) $s_x, (int) $s_y, (int) $new_w, (int) $new_h, (int) $crop_w, (int) $crop_h );
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}
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}
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}
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if(!function_exists('rev_aq_resize')) {
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/* Provider: - *
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* This is just a tiny wrapper function for the class above so that there is no
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* need to change any code in your own WP themes. Usage is still the same :)
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*/
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function rev_aq_resize( $url, $width = null, $height = null, $crop = null, $single = true, $upscale = false ) {
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$aq_resize = Rev_Aq_Resize::getInstance();
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return $aq_resize->process( $url, $width, $height, $crop, $single, $upscale );
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}
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}
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?>
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