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76 lines
3.4 KiB
Plaintext
76 lines
3.4 KiB
Plaintext
/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Mozilla Foundation
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* Portions created by the Initial Developer are Copyright (C) 2011
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "nsIDOMEvent.idl"
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[scriptable, uuid(a9bd91fd-c0a7-44ed-9975-5a58faba3be3)]
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interface nsIDOMDeviceOrientationEvent : nsIDOMEvent
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{
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void initDeviceOrientationEvent(in DOMString eventTypeArg,
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in boolean canBubbleArg,
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in boolean cancelableArg,
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in double alpha,
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in double beta,
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in double gamma,
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in boolean absolute);
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/*
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* W3C specification values: http://dev.w3.org/geo/api/spec-source-orientation.html
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*
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* Alpha, beta and gamma are Tait-Bryan angles (Z-X'-Y''), that is they correspond to
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* yaw, pitch and roll in flight coordinates. More specifically, assume the device
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* is resting face up on a flat surface (its screen is pointing straight up). Then
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* the X axis points to the right when looking at the screen, the Y axis points up
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* when looking at the screen, and the Z axis points toward you when looking at
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* the screen. Alpha/beta/gamma then define the device's orientation by applying
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* the following rotations to the device in order:
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*
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* 1) Rotate it by alpha degrees around its Z axis (like a compass, or like changing
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* the yaw of an aircraft, assuming the Y axis is the nose of the craft); alpha
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* is in [0,360).
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* 2) Rotate it by beta degrees around its X axis (tilting the top of the device
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* towards or away from you, like pitching an aircraft); beta is in [-180,180).
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* 3) Rotate it by gamma degrees around its Y axis (tilting it sideways, like
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* rolling an aircraft); gamma is in [-90,90).
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*/
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readonly attribute double alpha;
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readonly attribute double beta;
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readonly attribute double gamma;
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readonly attribute boolean absolute;
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};
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