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| 1 // Copyright (c) 2010 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #ifndef CHROME_BROWSER_GEOLOCATION_WIN7_LOCATION_API_WIN_H_ | |
| 6 #define CHROME_BROWSER_GEOLOCATION_WIN7_LOCATION_API_WIN_H_ | |
| 7 | |
| 8 #include <atlbase.h> | |
| 9 #include <atlcom.h> | |
| 10 #include <locationapi.h> | |
| 11 #include <sensors.h> | |
| 12 #include <Windows.h> | |
| 13 | |
| 14 #include "app/win/scoped_com_initializer.h" | |
| 15 #include "base/time.h" | |
| 16 | |
| 17 struct Geoposition; | |
| 18 | |
| 19 // PropVariantToDouble | |
| 20 typedef HRESULT (WINAPI* PropVariantToDoubleFunction) | |
| 21 (REFPROPVARIANT propvarIn, DOUBLE *pdblRet); | |
| 22 | |
| 23 class Win7LocationApi { | |
| 24 public: | |
| 25 virtual ~Win7LocationApi(); | |
| 26 // Attempts to load propsys.dll, initialise |location_| and requests the user | |
| 27 // for access to location information. Creates and returns ownership of an | |
| 28 // instance of Win7LocationApi if all succeed. | |
| 29 static Win7LocationApi* Create(); | |
| 30 static Win7LocationApi* CreateForTesting( | |
| 31 PropVariantToDoubleFunction PropVariantToDouble_function, | |
| 32 ILocation* locator); | |
| 33 // Gives the best available position. | |
| 34 // Returns false if no valid position is available. | |
| 35 virtual void GetPosition(Geoposition* position); | |
| 36 // Changes the "accuracy" needed. Affects power levels of devices. | |
| 37 virtual bool SetHighAccuracy(bool acc); | |
| 38 | |
| 39 protected: | |
| 40 Win7LocationApi(); | |
| 41 | |
| 42 private: | |
| 43 void Init(HINSTANCE prop_library, | |
| 44 PropVariantToDoubleFunction PropVariantToDouble_function, | |
| 45 ILocation* locator); | |
| 46 | |
| 47 // Provides the best position fix if one is available. | |
| 48 // Does this by requesting a location report and querying it to obtain | |
| 49 // location information. | |
| 50 virtual bool GetPositionIfFixed(Geoposition* position); | |
| 51 | |
| 52 // Ensure that COM has been initialized for this thread. | |
| 53 app::win::ScopedCOMInitializer com_initializer_; | |
| 54 // ILocation object that lets us communicate with the Location and | |
| 55 // Sensors platform. | |
| 56 CComPtr<ILocation> locator_; | |
| 57 // Holds the opened propsys.dll library that is passed on construction. | |
| 58 // This class is responsible for closing it. | |
| 59 HINSTANCE prop_lib_; | |
| 60 PropVariantToDoubleFunction PropVariantToDouble_function_; | |
| 61 | |
| 62 DISALLOW_COPY_AND_ASSIGN(Win7LocationApi); | |
| 63 }; | |
| 64 | |
| 65 #endif // CHROME_BROWSER_GEOLOCATION_WIN7_LOCATION_API_WIN_H_ | |
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