Animated Rotation

content/common/sensors.h

+// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CONTENT_COMMON_SENSORS_H_
+#define CONTENT_COMMON_SENSORS_H_
+#pragma once
+
+namespace sensors {
+
+enum Channel {
+  kScreenOrientationChannel,
+};
+
+struct ScreenOrientationChange {
+  enum Side {
+    TOP = 0,
+    BOTTOM = 1,
+    LEFT = 2,
+    RIGHT = 3,
+    FRONT = 4,
+    BACK = 5,
+  };
+
+  // The side of the device which the user probably perceives as facing upward.
+  // This can be used to orient controls and content in a "natural" direction.
+  Side upward;
+};
+
+}  // namespace sensors
+
+#endif  // CONTENT_COMMON_SENSORS_H_