fix: use max[Width|Height] when fitImagesInViewport is false

Author: k-iwanishi

src/js/lightbox.js

@@ -327,20 +327,24 @@
           maxImageHeight = self.options.maxHeight;
         }
 
-        // Is the current image's width or height is greater than the maxImageWidth or maxImageHeight
-        // option than we need to size down while maintaining the aspect ratio.
-        if ((preloader.width > maxImageWidth) || (preloader.height > maxImageHeight)) {
-          if ((preloader.width / maxImageWidth) > (preloader.height / maxImageHeight)) {
-            imageWidth  = maxImageWidth;
-            imageHeight = parseInt(preloader.height / (preloader.width / imageWidth), 10);
-            $image.width(imageWidth);
-            $image.height(imageHeight);
-          } else {
-            imageHeight = maxImageHeight;
-            imageWidth = parseInt(preloader.width / (preloader.height / imageHeight), 10);
-            $image.width(imageWidth);
-            $image.height(imageHeight);
-          }
+      } else {
+        maxImageWidth = self.options.maxWidth || preloader.width || maxImageWidth;
+        maxImageHeight = self.options.maxHeight || preloader.height || maxImageHeight;
+      }
+
+      // Is the current image's width or height is greater than the maxImageWidth or maxImageHeight
+      // option than we need to size down while maintaining the aspect ratio.
+      if ((preloader.width > maxImageWidth) || (preloader.height > maxImageHeight)) {
+        if ((preloader.width / maxImageWidth) > (preloader.height / maxImageHeight)) {
+          imageWidth  = maxImageWidth;
+          imageHeight = parseInt(preloader.height / (preloader.width / imageWidth), 10);
+          $image.width(imageWidth);
+          $image.height(imageHeight);
+        } else {
+          imageHeight = maxImageHeight;
+          imageWidth = parseInt(preloader.width / (preloader.height / imageHeight), 10);
+          $image.width(imageWidth);
+          $image.height(imageHeight);
         }
       }
       self.sizeContainer($image.width(), $image.height());