michael@0: /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0: /* vim: set sw=2 ts=8 et ft=cpp : */
michael@0: /* Copyright 2012 Mozilla Foundation and Mozilla contributors
michael@0:  *
michael@0:  * Licensed under the Apache License, Version 2.0 (the "License");
michael@0:  * you may not use this file except in compliance with the License.
michael@0:  * You may obtain a copy of the License at
michael@0:  *
michael@0:  *     http://www.apache.org/licenses/LICENSE-2.0
michael@0:  *
michael@0:  * Unless required by applicable law or agreed to in writing, software
michael@0:  * distributed under the License is distributed on an "AS IS" BASIS,
michael@0:  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
michael@0:  * See the License for the specific language governing permissions and
michael@0:  * limitations under the License.
michael@0:  */
michael@0: 
michael@0: #ifndef OrientationObserver_h
michael@0: #define OrientationObserver_h
michael@0: 
michael@0: #include "mozilla/Observer.h"
michael@0: #include "mozilla/dom/ScreenOrientation.h"
michael@0: #include "mozilla/Scoped.h"
michael@0: 
michael@0: namespace mozilla {
michael@0: class ProcessOrientation;
michael@0: namespace hal {
michael@0: class SensorData;
michael@0: typedef mozilla::Observer<SensorData> ISensorObserver;
michael@0: } // namespace hal
michael@0: } // namespace mozilla
michael@0: 
michael@0: using mozilla::hal::ISensorObserver;
michael@0: using mozilla::hal::SensorData;
michael@0: using mozilla::dom::ScreenOrientation;
michael@0: 
michael@0: class OrientationObserver : public ISensorObserver {
michael@0: public:
michael@0:   OrientationObserver();
michael@0:   ~OrientationObserver();
michael@0: 
michael@0:   // Call DisableAutoOrientation on the existing OrientatiOnobserver singleton,
michael@0:   // if it exists.  If no OrientationObserver exists, do nothing.
michael@0:   static void ShutDown();
michael@0: 
michael@0:   // Notification from sensor.
michael@0:   void Notify(const SensorData& aSensorData);
michael@0: 
michael@0:   // Methods to enable/disable automatic orientation.
michael@0:   void EnableAutoOrientation();
michael@0:   void DisableAutoOrientation();
michael@0: 
michael@0:   // Methods called by methods in hal_impl namespace.
michael@0:   bool LockScreenOrientation(ScreenOrientation aOrientation);
michael@0:   void UnlockScreenOrientation();
michael@0: 
michael@0:   static OrientationObserver* GetInstance();
michael@0: 
michael@0: private:
michael@0:   bool mAutoOrientationEnabled;
michael@0:   uint32_t mAllowedOrientations;
michael@0:   mozilla::ScopedDeletePtr<mozilla::ProcessOrientation> mOrientation;
michael@0: 
michael@0:   static const uint32_t sDefaultOrientations =
michael@0:       mozilla::dom::eScreenOrientation_PortraitPrimary |
michael@0:       mozilla::dom::eScreenOrientation_PortraitSecondary |
michael@0:       mozilla::dom::eScreenOrientation_LandscapePrimary |
michael@0:       mozilla::dom::eScreenOrientation_LandscapeSecondary;
michael@0: };
michael@0: 
michael@0: #endif