dom/base/WindowOrientationObserver.h
author William Chen <wchen@mozilla.com>
Fri, 23 Oct 2015 21:37:28 -0700
changeset 269383 f8c8a754583350b964cb251aed8ce6dc4eaaee7f
child 391070 ff6e961b87dc1163c5efe35da2e334c6723a14e1
permissions -rw-r--r--
Bug 920734 - Part 1: Implement window.orientation and window.onorientationchange. r=baku

/* -*- 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 mozilla_dom_WindowOrientationObserver_h
#define mozilla_dom_WindowOrientationObserver_h

#include "mozilla/HalScreenConfiguration.h"

class nsGlobalWindow;

namespace mozilla {
namespace dom {

class WindowOrientationObserver final :
  public mozilla::hal::ScreenConfigurationObserver
{
public:
  explicit WindowOrientationObserver(nsGlobalWindow* aGlobalWindow);
  ~WindowOrientationObserver();
  void Notify(const mozilla::hal::ScreenConfiguration& aConfiguration) override;
  static int16_t OrientationAngle();

private:
  // Weak pointer, instance is owned by mWindow.
  nsGlobalWindow* MOZ_NON_OWNING_REF mWindow;
  uint16_t mAngle;
};

} // namespace dom
} // namespace mozilla

#endif // mozilla_dom_WindowOrientationObserver_h