diff -r 000000000000 -r 6474c204b198 content/html/document/public/nsIImageDocument.idl
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/content/html/document/public/nsIImageDocument.idl	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,50 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "nsISupports.idl"
+
+/**
+ * @status UNDER_DEVELOPMENT
+ */
+
+interface imgIRequest;
+
+[scriptable, uuid(87c27f98-37dc-4b64-a8cd-92003624bcee)]
+interface nsIImageDocument : nsISupports {
+
+  /* Whether the pref for image resizing has been set. */
+  readonly attribute boolean imageResizingEnabled;
+
+  /* Whether the image is overflowing visible area. */
+  readonly attribute boolean imageIsOverflowing;
+
+  /* Whether the image has been resized to fit visible area. */
+  readonly attribute boolean imageIsResized;
+
+  /* The image request being displayed in the content area */
+  readonly attribute imgIRequest imageRequest;
+
+  /* Resize the image to fit visible area. */
+  [binaryname(DOMShrinkToFit)]
+  void shrinkToFit();
+
+  /* Restore image original size. */
+  [binaryname(DOMRestoreImage)]
+  void restoreImage();
+
+  /* Restore the image, trying to keep a certain pixel in the same position.
+   * The coordinate system is that of the shrunken image.
+   */
+  [binaryname(DOMRestoreImageTo)]
+  void restoreImageTo(in long x, in long y);
+
+  /* A helper method for switching between states.
+   * The switching logic is as follows. If the image has been resized
+   * restore image original size, otherwise if the image is overflowing
+   * current visible area resize the image to fit the area.
+   */
+  [binaryname(DOMToggleImageSize)]
+  void toggleImageSize();
+};