The Tor Browser: widget/gonk/OrientationObserver.h@b8a032363ba2

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

     1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

     2 /* vim: set sw=2 ts=8 et ft=cpp : */

     3 /* Copyright 2012 Mozilla Foundation and Mozilla contributors

     4  *

     5  * Licensed under the Apache License, Version 2.0 (the "License");

     6  * you may not use this file except in compliance with the License.

     7  * You may obtain a copy of the License at

     8  *

     9  *     http://www.apache.org/licenses/LICENSE-2.0

    10  *

    11  * Unless required by applicable law or agreed to in writing, software

    12  * distributed under the License is distributed on an "AS IS" BASIS,

    13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

    14  * See the License for the specific language governing permissions and

    15  * limitations under the License.

    16  */

    18 #ifndef OrientationObserver_h

    19 #define OrientationObserver_h

    21 #include "mozilla/Observer.h"

    22 #include "mozilla/dom/ScreenOrientation.h"

    23 #include "mozilla/Scoped.h"

    25 namespace mozilla {

    26 class ProcessOrientation;

    27 namespace hal {

    28 class SensorData;

    29 typedef mozilla::Observer<SensorData> ISensorObserver;

    30 } // namespace hal

    31 } // namespace mozilla

    33 using mozilla::hal::ISensorObserver;

    34 using mozilla::hal::SensorData;

    35 using mozilla::dom::ScreenOrientation;

    37 class OrientationObserver : public ISensorObserver {

    38 public:

    39   OrientationObserver();

    40   ~OrientationObserver();

    42   // Call DisableAutoOrientation on the existing OrientatiOnobserver singleton,

    43   // if it exists.  If no OrientationObserver exists, do nothing.

    44   static void ShutDown();

    46   // Notification from sensor.

    47   void Notify(const SensorData& aSensorData);

    49   // Methods to enable/disable automatic orientation.

    50   void EnableAutoOrientation();

    51   void DisableAutoOrientation();

    53   // Methods called by methods in hal_impl namespace.

    54   bool LockScreenOrientation(ScreenOrientation aOrientation);

    55   void UnlockScreenOrientation();

    57   static OrientationObserver* GetInstance();

    59 private:

    60   bool mAutoOrientationEnabled;

    61   uint32_t mAllowedOrientations;

    62   mozilla::ScopedDeletePtr<mozilla::ProcessOrientation> mOrientation;

    64   static const uint32_t sDefaultOrientations =

    65       mozilla::dom::eScreenOrientation_PortraitPrimary |

    66       mozilla::dom::eScreenOrientation_PortraitSecondary |

    67       mozilla::dom::eScreenOrientation_LandscapePrimary |

    68       mozilla::dom::eScreenOrientation_LandscapeSecondary;

    69 };

    71 #endif

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