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Issue 6576020: Remove Gears from Chrome (Closed) Base URL: http://git.chromium.org/git/chromium.git@trunk
Patch Set: windows fixes Created 9 years, 9 months ago
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1 // Copyright (c) 2010 The Chromium Authors. All rights reserved. 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 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 #include "content/browser/geolocation/win7_location_provider_win.h" 5 #include "content/browser/geolocation/win7_location_provider_win.h"
6 6
7 #include <algorithm> 7 #include <algorithm>
8 #include <cmath> 8 #include <cmath>
9 9
10 #include "base/compiler_specific.h" 10 #include "base/compiler_specific.h"
11 #include "base/logging.h" 11 #include "base/logging.h"
12 #include "base/message_loop.h" 12 #include "base/message_loop.h"
13 13
14 namespace{ 14 namespace{
15 const int kPollPeriodMovingMillis = 500; 15 const int kPollPeriodMovingMillis = 500;
16 // Poll less frequently whilst stationary. 16 // Poll less frequently whilst stationary.
17 const int kPollPeriodStationaryMillis = kPollPeriodMovingMillis * 3; 17 const int kPollPeriodStationaryMillis = kPollPeriodMovingMillis * 3;
18 // Reading must differ by more than this amount to be considered movement. 18 // Reading must differ by more than this amount to be considered movement.
19 const int kMovementThresholdMeters = 20; 19 const int kMovementThresholdMeters = 20;
20 20
21 // This algorithm is reused from the corresponding code in the gears project 21 // This algorithm is reused from the corresponding code in the Gears project
22 // and is also used in gps_location_provider_linux.cc 22 // and is also used in gps_location_provider_linux.cc
23 // The arbitrary delta is decreased (gears used 100 meters); if we need to 23 // The arbitrary delta is decreased (Gears used 100 meters); if we need to
24 // decrease it any further we'll likely want to do some smarter filtering to 24 // decrease it any further we'll likely want to do some smarter filtering to
25 // remove GPS location jitter noise. 25 // remove GPS location jitter noise.
26 bool PositionsDifferSiginificantly(const Geoposition& position_1, 26 bool PositionsDifferSiginificantly(const Geoposition& position_1,
27 const Geoposition& position_2) { 27 const Geoposition& position_2) {
28 const bool pos_1_valid = position_1.IsValidFix(); 28 const bool pos_1_valid = position_1.IsValidFix();
29 if (pos_1_valid != position_2.IsValidFix()) 29 if (pos_1_valid != position_2.IsValidFix())
30 return true; 30 return true;
31 if (!pos_1_valid) { 31 if (!pos_1_valid) {
32 DCHECK(!position_2.IsValidFix()); 32 DCHECK(!position_2.IsValidFix());
33 return false; 33 return false;
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97 task_factory_.NewRunnableMethod(&Win7LocationProvider::DoPollTask), 97 task_factory_.NewRunnableMethod(&Win7LocationProvider::DoPollTask),
98 interval); 98 interval);
99 } 99 }
100 100
101 LocationProviderBase* NewSystemLocationProvider() { 101 LocationProviderBase* NewSystemLocationProvider() {
102 Win7LocationApi* api = Win7LocationApi::Create(); 102 Win7LocationApi* api = Win7LocationApi::Create();
103 if (api == NULL) 103 if (api == NULL)
104 return NULL; // API not supported on this machine. 104 return NULL; // API not supported on this machine.
105 return new Win7LocationProvider(api); 105 return new Win7LocationProvider(api);
106 } 106 }
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