1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/dom/interfaces/events/nsIDOMWheelEvent.idl Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,48 @@
1.4 +/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
1.5 +/* vim: set ts=2 et sw=2 tw=80: */
1.6 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.7 + * License, v. 2.0. If a copy of the MPL was not distributed with this file,
1.8 + * You can obtain one at http://mozilla.org/MPL/2.0/. */
1.9 +
1.10 +#include "nsIDOMMouseEvent.idl"
1.11 +
1.12 +[scriptable, builtinclass, uuid(86e2b577-7e61-4ed5-8ddd-c1533bf07137)]
1.13 +interface nsIDOMWheelEvent : nsIDOMMouseEvent
1.14 +{
1.15 + const unsigned long DOM_DELTA_PIXEL = 0x00;
1.16 + const unsigned long DOM_DELTA_LINE = 0x01;
1.17 + const unsigned long DOM_DELTA_PAGE = 0x02;
1.18 +
1.19 + // Note that DOM Level 3 Events defines the type of delta values as float.
1.20 + // However, we should use double for them. Javascript engine always uses
1.21 + // double even if interface attributes are float. If we defined them
1.22 + // as float, that would cause error at casting from float to double.
1.23 + // E.g., following function may return false if the deltaX is float:
1.24 + //
1.25 + // function () {
1.26 + // var event = new WheelEvent("wheel", { deltaX: 0.1 });
1.27 + // return (event.deltaX == 0.1);
1.28 + // }
1.29 +
1.30 + readonly attribute double deltaX;
1.31 + readonly attribute double deltaY;
1.32 + readonly attribute double deltaZ;
1.33 + readonly attribute unsigned long deltaMode;
1.34 +
1.35 + [noscript] void initWheelEvent(in DOMString typeArg,
1.36 + in boolean canBubbleArg,
1.37 + in boolean cancelableArg,
1.38 + in nsIDOMWindow viewArg,
1.39 + in long detailArg,
1.40 + in long screenXArg,
1.41 + in long screenYArg,
1.42 + in long clientXArg,
1.43 + in long clientYArg,
1.44 + in unsigned short buttonArg,
1.45 + in nsIDOMEventTarget relatedTargetArg,
1.46 + in DOMString modifiersListArg,
1.47 + in double deltaXArg,
1.48 + in double deltaYArg,
1.49 + in double deltaZArg,
1.50 + in unsigned long deltaMode);
1.51 +};
