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1 // Copyright (c) 2012 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 CONTENT_BROWSER_GEOLOCATION_WIN7_LOCATION_API_WIN_H_ | |
6 #define CONTENT_BROWSER_GEOLOCATION_WIN7_LOCATION_API_WIN_H_ | |
7 | |
8 #include <windows.h> | |
9 #include <atlbase.h> | |
10 #include <atlcom.h> | |
11 #include <locationapi.h> | |
12 #include <sensors.h> | |
13 | |
14 #include "base/basictypes.h" | |
15 #include "content/common/content_export.h" | |
16 | |
17 namespace content { | |
18 struct Geoposition; | |
19 | |
20 // PropVariantToDouble | |
21 typedef HRESULT (WINAPI* PropVariantToDoubleFunction) | |
22 (REFPROPVARIANT propvarIn, DOUBLE *pdblRet); | |
23 | |
24 class CONTENT_EXPORT Win7LocationApi { | |
25 public: | |
26 virtual ~Win7LocationApi(); | |
27 // Attempts to load propsys.dll, initialise |location_| and requests the user | |
28 // for access to location information. Creates and returns ownership of an | |
29 // instance of Win7LocationApi if all succeed. | |
30 static Win7LocationApi* Create(); | |
31 static Win7LocationApi* CreateForTesting( | |
32 PropVariantToDoubleFunction PropVariantToDouble_function, | |
33 ILocation* locator); | |
34 // Gives the best available position. | |
35 // Returns false if no valid position is available. | |
36 virtual void GetPosition(Geoposition* position); | |
37 // Changes the "accuracy" needed. Affects power levels of devices. | |
38 virtual bool SetHighAccuracy(bool acc); | |
39 | |
40 protected: | |
41 Win7LocationApi(); | |
42 | |
43 private: | |
44 void Init(HINSTANCE prop_library, | |
45 PropVariantToDoubleFunction PropVariantToDouble_function, | |
46 ILocation* locator); | |
47 | |
48 // Provides the best position fix if one is available. | |
49 // Does this by requesting a location report and querying it to obtain | |
50 // location information. | |
51 virtual bool GetPositionIfFixed(Geoposition* position); | |
52 | |
53 // ILocation object that lets us communicate with the Location and | |
54 // Sensors platform. | |
55 CComPtr<ILocation> locator_; | |
56 // Holds the opened propsys.dll library that is passed on construction. | |
57 // This class is responsible for closing it. | |
58 HINSTANCE prop_lib_; | |
59 PropVariantToDoubleFunction PropVariantToDouble_function_; | |
60 | |
61 DISALLOW_COPY_AND_ASSIGN(Win7LocationApi); | |
62 }; | |
63 | |
64 } // namespace content | |
65 | |
66 #endif // CONTENT_BROWSER_GEOLOCATION_WIN7_LOCATION_API_WIN_H_ | |
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