1 files changed, 48 insertions, 0 deletions
diff --git a/dom/base/ViewportMetaData.h b/dom/base/ViewportMetaData.h
new file mode 100644
index 0000000000..7de6eda731
--- /dev/null
+++ b/dom/base/ViewportMetaData.h
@@ -0,0 +1,48 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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/. */
+
+#ifndef DOM_VIEWPORT_META_DATA_H_
+#define DOM_VIEWPORT_META_DATA_H_
+
+#include "nsString.h"
+#include "nsAString.h"
+
+namespace mozilla::dom {
+struct ViewportMetaData {
+  // https://drafts.csswg.org/css-device-adapt/#meta-properties
+  nsString mWidth;
+  nsString mHeight;
+  nsString mInitialScale;
+  nsString mMinimumScale;
+  nsString mMaximumScale;
+  nsString mUserScalable;
+  nsString mViewportFit;
+
+  bool operator==(const ViewportMetaData& aOther) const {
+    return mWidth == aOther.mWidth && mHeight == aOther.mHeight &&
+           mInitialScale == aOther.mInitialScale &&
+           mMinimumScale == aOther.mMinimumScale &&
+           mMaximumScale == aOther.mMaximumScale &&
+           mUserScalable == aOther.mUserScalable &&
+           mViewportFit == aOther.mViewportFit;
+  }
+  bool operator!=(const ViewportMetaData& aOther) const {
+    return !(*this == aOther);
+  }
+
+  ViewportMetaData() = default;
+  /* Process viewport META data. This gives us information for the scale
+   * and zoom of a page on mobile devices. We stick the information in
+   * the document header and use it later on after rendering.
+   *
+   * See Bug #436083
+   */
+  explicit ViewportMetaData(const nsAString& aViewportInfo);
+};
+
+}  // namespace mozilla::dom
+
+#endif  // DOM_VIEWPORT_META_DATA_H_