content/public/common/geoposition.cc

   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 #include "content/public/common/geoposition.h"
   6
   7 namespace {
   8 // Sentinel values to mark invalid data. (WebKit carries companion is_valid
   9 // bools for this purpose; we may eventually follow that approach, but
  10 // sentinels worked OK in the Gears code this is based on.)
  11 const double kBadLatitudeLongitude = 200;
  12 // Lowest point on land is at approximately -400 meters.
  13 const int kBadAltitude = -10000;
  14 const int kBadAccuracy = -1;  // Accuracy must be non-negative.
  15 const int kBadHeading = -1;  // Heading must be non-negative.
  16 const int kBadSpeed = -1;
  17 }
  18
  19 namespace content {
  20
  21 Geoposition::Geoposition()
  22     : latitude(kBadLatitudeLongitude),
  23       longitude(kBadLatitudeLongitude),
  24       altitude(kBadAltitude),
  25       accuracy(kBadAccuracy),
  26       altitude_accuracy(kBadAccuracy),
  27       heading(kBadHeading),
  28       speed(kBadSpeed),
  29       error_code(ERROR_CODE_NONE) {
  30 }
  31
  32 bool Geoposition::Validate() const {
  33   return latitude >= -90. && latitude <= 90. &&
  34          longitude >= -180. && longitude <= 180. &&
  35          accuracy >= 0. &&
  36          !timestamp.is_null();
  37 }
  38
  39 }  // namespace content