// Copyright 2017 The Chromium Authors. All rights reserved. // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. module device.mojom; import "mojo/common/time.mojom"; // Sentinel values to mark invalid data. (WebKit carries companion is_valid // bools for this purpose; we may eventually follow that approach, but // sentinels worked OK in the Gears code this is based on.) const double kBadLatitudeLongitude = 200; // Lowest point on land is at approximately -400 meters. const double kBadAltitude = -10000; const double kBadAccuracy = -1; // Accuracy must be non-negative. const double kBadHeading = -1; // Heading must be non-negative. const double kBadSpeed = -1; // A Geoposition represents a position fix. It was originally derived from: // http://gears.googlecode.com/svn/trunk/gears/geolocation/geolocation.h struct Geoposition { // These values follow the W3C geolocation specification and can be returned // to JavaScript without the need for a conversion. enum ErrorCode { NONE = 0, // Chrome addition. PERMISSION_DENIED = 1, POSITION_UNAVAILABLE = 2, TIMEOUT = 3, LAST = TIMEOUT }; // Whether this geoposition is valid. bool valid; // These properties correspond to those of the JavaScript Position object // although their types may differ. // Latitude in decimal degrees north (WGS84 coordinate frame). double latitude = kBadLatitudeLongitude; // Longitude in decimal degrees west (WGS84 coordinate frame). double longitude = kBadLatitudeLongitude; // Altitude in meters (above WGS84 datum). double altitude = kBadAltitude; // Accuracy of horizontal position in meters. double accuracy = kBadAccuracy; // Accuracy of altitude in meters. double altitude_accuracy = kBadAccuracy; // Heading in decimal degrees clockwise from true north. double heading = kBadHeading; // Horizontal component of device velocity in meters per second. double speed = kBadSpeed; // Time of position measurement in seconds since the Windows FILETIME epoch // (1601-01-01 00:00:00 UTC). This is taken from the host computer's system // clock (i.e. from Time::Now(), not the source device's clock). mojo.common.mojom.Time timestamp; // Error code, see enum above. ErrorCode error_code = NONE; // Human-readable error message. string error_message; };