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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set sw=2 ts=8 et ft=cpp : */
/* Copyright 2012 Mozilla Foundation and Mozilla contributors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef OrientationObserver_h
#define OrientationObserver_h
#include "mozilla/Observer.h"
#include "mozilla/dom/ScreenOrientation.h"
#include "mozilla/UniquePtr.h"
namespace mozilla {
class ProcessOrientation;
namespace hal {
class SensorData;
typedef mozilla::Observer<SensorData> ISensorObserver;
} // namespace hal
} // namespace mozilla
using mozilla::hal::ISensorObserver;
using mozilla::hal::SensorData;
using mozilla::dom::ScreenOrientationInternal;
class OrientationObserver : public ISensorObserver {
public:
OrientationObserver();
~OrientationObserver();
// Call DisableAutoOrientation on the existing OrientatiOnobserver singleton,
// if it exists. If no OrientationObserver exists, do nothing.
static void ShutDown();
// Notification from sensor.
void Notify(const SensorData& aSensorData);
// Methods to enable/disable automatic orientation.
void EnableAutoOrientation();
void DisableAutoOrientation();
// Methods called by methods in hal_impl namespace.
bool LockScreenOrientation(ScreenOrientationInternal aOrientation);
void UnlockScreenOrientation();
static OrientationObserver* GetInstance();
private:
bool mAutoOrientationEnabled;
uint32_t mAllowedOrientations;
mozilla::UniquePtr<mozilla::ProcessOrientation> mOrientation;
static const uint32_t sDefaultOrientations =
mozilla::dom::eScreenOrientation_PortraitPrimary |
mozilla::dom::eScreenOrientation_PortraitSecondary |
mozilla::dom::eScreenOrientation_LandscapePrimary |
mozilla::dom::eScreenOrientation_LandscapeSecondary;
};
#endif
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