index.php

<?php

use Intervention\Image\ImageManagerStatic as Image;
use Illuminate\Http\Request as Request;

// load the image manipulation library
require 'vendor/autoload.php';

// the request
$request = Request::createFromGlobals();

// the original image to process
$img_path = dirname(dirname(dirname(dirname(__FILE__)))) . '/' . $request->path();

// where we will write the cache file
$cache_path = dirname(__FILE__) . '/cache/' . http_build_query($request->query()) . '_' . basename($img_path);

try {
    // if CACHE HIT
    if (file_exists($cache_path)) {

        $img = Image::make($cache_path);

    }
    // else CACHE MISS
    else {
    	// load wordpress
		require_once( dirname(__FILE__) . '/../../../wp-load.php');
		
		if (!function_exists('is_plugin_active')) {
			require_once( ABSPATH . '/wp-admin/includes/plugin.php' );
		}
		
		// check for this plugin being active
		if (is_plugin_active(basename(dirname(__FILE__)) . '/atd-pictator.php')) {

			$driver = get_option('image_library');
			
			$driver = in_array($driver, array('gd', 'imagick')) ? $driver : 'gd';
			
			// image manipulation object
			Image::configure(array('driver' => $driver));
			
	        $img = Image::make($img_path);
	
		    // Image Resize
	        if ($request->query('a', 'resize') == 'resize') {
			    switch ($request->query('r')) {
				    case 'contain':
					    $img->resize($request->query('w'), $request->query('h'), function($constraint) {
	                    	$constraint->aspectRatio();
	                	});
				    break;
				    case 'widen':
					    $img->widen($request->query('w'));
				    break;
				    case 'heighten':
					    $img->heighten($request->query('h'));
				    break;
				    case 'cover':
					    $img->fit(
						    $request->query('w'), 
						    $request->query('h')
					    );
			    }
	        }
		    // Image Crop
	        else if ($request->query('a') == 'crop') {
	            $img->crop(
				    $request->query('w'), 
				    $request->query('h'), 
				    $request->query('x'), 
				    $request->query('y')
			    );
	        }
	        
	        if (get_option('atd_pictator_debug')) {
	        	
		        // write DEBUG query params to text
				$text = "ATD Pictator DEBUG\n";
				$text.= "--------------------\n";
				$text.= "Image: " . basename($request->path()) . "\n";
				foreach ($request->query() as $key => $val) {
					$text.= "$key: $val\n";
				}
				
				// write it twice to help reading with overly dark/light images
				$img->text($text, 10, 22, function($font) {
				    $font->file('assets/InconsolataLGC-OT/Inconsolata-LGC.otf');
				    $font->size(12);
				    $font->color('#000000');
				});
				$img->text($text, 11, 21, function($font) {
				    $font->file('assets/InconsolataLGC-OT/Inconsolata-LGC.otf');
				    $font->size(12);
				    $font->color('#ffffff');
				});
				
				// output image
				echo $img->response();
				exit;
	        }
	        
	        $img->save($cache_path);

		}
    }

	if(isset($img)) {
    	echo $img->response();
	} else {
		http_response_code(404);
		exit;
	}

} catch (Exception $e) {
	http_response_code(404);
	exit;
}