gecko-dev/layout/mathml/nsMathMLsemanticsFrame.cpp

71 lines
2.7 KiB
C++

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Mozilla MathML Project.
*
* The Initial Developer of the Original Code is
* Frederic Wang <fred.wang@free.fr>
* Portions created by the Initial Developer are Copyright (C) 2010
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the terms of
* either of the GNU General Public License Version 2 or later (the "GPL"),
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include "nsMathMLsemanticsFrame.h"
//
// <semantics> -- associate annotations with a MathML expression
//
nsIFrame*
NS_NewMathMLsemanticsFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
{
return new (aPresShell) nsMathMLsemanticsFrame(aContext);
}
NS_IMPL_FRAMEARENA_HELPERS(nsMathMLsemanticsFrame)
nsMathMLsemanticsFrame::~nsMathMLsemanticsFrame()
{
}
NS_IMETHODIMP
nsMathMLsemanticsFrame::TransmitAutomaticData()
{
// The REC defines the following elements to be embellished operators:
// * one of the elements msub, msup, msubsup, munder, mover, munderover,
// mmultiscripts, mfrac, or semantics (Section 5.1 Annotation Framework),
// whose first argument exists and is an embellished operator;
//
// If our first child is an embellished operator, its flags bubble to us
mPresentationData.baseFrame = mFrames.FirstChild();
GetEmbellishDataFrom(mPresentationData.baseFrame, mEmbellishData);
return NS_OK;
}