Initial commit

site/OFF_plugins/imagekit/lib/component/thumb.php

@@ -0,0 +1,128 @@
+<?php
+
+namespace Kirby\Plugins\ImageKit\Component;
+
+use Asset;
+use F;
+use Header;
+use Kirby\Component\Thumb as ThumbComponent;
+use Kirby\Plugins\ImageKit\LazyThumb;
+use Kirby\Plugins\ImageKit\ComplainingThumb;
+use Kirby\Plugins\ImageKit\ProxyAsset;
+use Kirby\Plugins\ImageKit\Optimizer;
+
+
+/**
+ * Replacement for Kirby’s built-in `thumb` component with
+ * asynchronous thumb creation and image optimization
+ * capabilities.
+ */
+class Thumb extends ThumbComponent {
+  
+  public function defaults() {
+    
+    return array_merge(parent::defaults(), [
+      'imagekit.lazy'               => true,
+      'imagekit.complain'           => true,
+      'imagekit.widget'             => true,
+      'imagekit.widget.step'        => 5,
+      'imagekit.widget.discover'    => true,
+
+      'imagekit.optimize'           => false,
+      'imagekit.engine'             => null,
+      
+      'imagekit.license'            => '',
+
+      // Used for the development of the plugin, currently
+      // not officialy documented.
+      'imagekit.debug'              => false,
+    ]);
+    
+  }
+  
+  public function configure() {    
+    parent::configure();
+    
+    // Register route to catch non-existing files within the
+    // thumbs directory.
+    $base = ltrim(substr($this->kirby->roots->thumbs(), strlen($this->kirby->roots->index())), DS);
+    
+    // Setup optimizer if enabled.
+    if($this->kirby->option('imagekit.optimize')) {
+      optimizer::register();
+    }
+
+    $this->kirby->set('route', [
+      'pattern' => "{$base}/(:all)", // $base = 'thumbs' by default
+      'action'  => function ($path) {
+        
+        if($this->kirby->option('imagekit.complain')) {
+          complainingthumb::enableSendError();
+          complainingthumb::setErrorFormat('image');
+        }
+        
+        // Try to load a jobfile for given thumb url and
+        // execute if exists
+        $thumb = lazythumb::process($path);
+        
+        if($thumb) {
+          // Serve the image, if everything went fine :-D
+          
+          $root = $thumb->result->root();
+
+          // Make sure, we’re sending a 200 status, telling
+          // the browser that everything’s okay.
+          header::status(200);
+
+          // Don’t tell anyone that this image was just
+          // created by PHP ;-)
+          header_remove('X-Powered-By');
+
+          header('Last-Modified: '  . gmdate('D, d M Y H:i:s', f::modified($root)) . ' GMT');
+          header('Content-Type: '   . f::mime($root));
+          header('Content-Length: ' . f::size($root));
+
+          // Send file and stop script execution
+          readfile($root);
+          
+          exit;
+
+        } else {
+          // Show a 404 error, if the job could not be
+          // found or executed
+          return site()->errorPage();
+        }
+        
+      },
+    ]);
+  }  
+  
+  public function create($file, $params) {
+    
+    if (!$this->kirby->option('imagekit.lazy') || (isset($params['imagekit.lazy']) && !$params['imagekit.lazy'])) {
+      return parent::create($file, $params);
+    }
+    
+    if(!$file->isWebsafe()) return $file;
+    
+    // Instead of a Thumb, a Job will be created for later
+    // execution
+    $thumb = new LazyThumb($file, $params);
+    
+    if($thumb->result instanceof ProxyAsset) {
+      // If the thumb is yet to be generated, use the
+      // virtual asset, created by the LazyThumb class
+      $asset = $thumb->result;
+    } else {
+      // Otherwise, create a new asset from the returned
+      // media object.
+      $asset = new Asset($thumb->result);
+    }
+    
+    // store a reference to the original file
+    $asset->original($file);
+    
+    return $asset;
+  }
+  
+}