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49 lines
2.1 KiB
Plaintext
49 lines
2.1 KiB
Plaintext
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "nsIDOMMouseEvent.idl"
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[builtinclass, uuid(f1ca2983-8559-43d1-be0e-1af8331755fd)]
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interface nsIDOMWheelEvent : nsIDOMMouseEvent
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{
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const unsigned long DOM_DELTA_PIXEL = 0x00;
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const unsigned long DOM_DELTA_LINE = 0x01;
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const unsigned long DOM_DELTA_PAGE = 0x02;
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// Note that DOM Level 3 Events defines the type of delta values as float.
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// However, we should use double for them. Javascript engine always uses
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// double even if interface attributes are float. If we defined them
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// as float, that would cause error at casting from float to double.
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// E.g., following function may return false if the deltaX is float:
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//
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// function () {
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// var event = new WheelEvent("wheel", { deltaX: 0.1 });
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// return (event.deltaX == 0.1);
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// }
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readonly attribute double deltaX;
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readonly attribute double deltaY;
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readonly attribute double deltaZ;
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readonly attribute unsigned long deltaMode;
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[noscript] void initWheelEvent(in DOMString typeArg,
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in boolean canBubbleArg,
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in boolean cancelableArg,
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in nsIDOMWindow viewArg,
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in long detailArg,
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in long screenXArg,
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in long screenYArg,
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in long clientXArg,
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in long clientYArg,
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in unsigned short buttonArg,
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in nsIDOMEventTarget relatedTargetArg,
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in DOMString modifiersListArg,
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in double deltaXArg,
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in double deltaYArg,
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in double deltaZArg,
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in unsigned long deltaMode);
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};
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