extract detail from pdf

oml/item/handlers.py

@@ -93,6 +93,24 @@ class EpubHandler(OMLHandler):
                 self.set_header('Content-Type', content_type)
                 self.write(z.read(filename))
 
+class CropHandler(OMLHandler):
+
+    def get(self, id, page, left, top, right, bottom):
+        from media.pdf import crop
+        with db.session():
+            item = Item.get(id)
+            path = item.get_path()
+            print(path, page, left, top, right, bottom)
+            data = crop(path, page, left, top, right, bottom)
+            if data:
+                self.set_header('Content-Type', 'image/jpeg')
+                self.set_header('Content-Length', str(len(data)))
+                self.write(data)
+                return
+        self.set_status(404)
+        return
+
+
 def serve_static(handler, path, mimetype, include_body=True, disposition=None):
     handler.set_header('Content-Type', mimetype)
     size = os.stat(path).st_size