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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_DEVICE_ORIENTATION_ORIENTATION_H_ | |
| 6 #define CHROME_BROWSER_DEVICE_ORIENTATION_ORIENTATION_H_ | |
| 7 | |
| 8 namespace device_orientation { | |
| 9 class Orientation { | |
| 10 public: | |
| 11 // alpha, beta and gamma are the rotations around the axes as specified in | |
| 12 // http://dev.w3.org/geo/api/spec-source-orientation.html | |
| 13 // | |
| 14 // can_provide_{alpha,beta,gamma} is true if data can be provided for that | |
| 15 // variable. | |
| 16 | |
| 17 Orientation(bool can_provide_alpha, double alpha, | |
| 18 bool can_provide_beta, double beta, | |
| 19 bool can_provide_gamma, double gamma) | |
| 20 : alpha_(alpha), | |
| 21 beta_(beta), | |
| 22 gamma_(gamma), | |
| 23 can_provide_alpha_(can_provide_alpha), | |
| 24 can_provide_beta_(can_provide_beta), | |
| 25 can_provide_gamma_(can_provide_gamma) { | |
| 26 } | |
| 27 | |
| 28 Orientation() | |
| 29 : alpha_(0), | |
| 30 beta_(0), | |
| 31 gamma_(0), | |
| 32 can_provide_alpha_(false), | |
| 33 can_provide_beta_(false), | |
| 34 can_provide_gamma_(false) { | |
| 35 } | |
| 36 | |
| 37 static Orientation Empty() { return Orientation(); } | |
| 38 | |
| 39 bool IsEmpty() const { | |
| 40 return !can_provide_alpha_ && !can_provide_beta_ && !can_provide_gamma_; | |
| 41 } | |
| 42 | |
| 43 double alpha_; | |
| 44 double beta_; | |
| 45 double gamma_; | |
| 46 bool can_provide_alpha_; | |
| 47 bool can_provide_beta_; | |
| 48 bool can_provide_gamma_; | |
| 49 }; | |
| 50 | |
| 51 } // namespace device_orientation | |
| 52 | |
| 53 #endif // CHROME_BROWSER_DEVICE_ORIENTATION_ORIENTATION_H_ | |
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