зеркало из https://github.com/mozilla/gecko-dev.git
66 строки
2.0 KiB
C++
66 строки
2.0 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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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
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "nsMathMLmsqrtFrame.h"
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//
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// <msqrt> -- form a radical - implementation
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//
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//NOTE:
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// The code assumes that TeX fonts are picked.
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// There is no fall-back to draw the branches of the sqrt explicitly
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// in the case where TeX fonts are not there. In general, there are no
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// fall-back(s) in MathML when some (freely-downloadable) fonts are missing.
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// Otherwise, this will add much work and unnecessary complexity to the core
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// MathML engine. Assuming that authors have the free fonts is part of the
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// deal. We are not responsible for cases of misconfigurations out there.
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nsIFrame*
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NS_NewMathMLmsqrtFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
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{
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return new (aPresShell) nsMathMLmsqrtFrame(aContext);
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}
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NS_IMPL_FRAMEARENA_HELPERS(nsMathMLmsqrtFrame)
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nsMathMLmsqrtFrame::nsMathMLmsqrtFrame(nsStyleContext* aContext) :
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nsMathMLmencloseFrame(aContext)
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{
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}
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nsMathMLmsqrtFrame::~nsMathMLmsqrtFrame()
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{
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}
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void
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nsMathMLmsqrtFrame::Init(nsIContent* aContent,
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nsIFrame* aParent,
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nsIFrame* aPrevInFlow)
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{
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nsMathMLContainerFrame::Init(aContent, aParent, aPrevInFlow);
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AllocateMathMLChar(NOTATION_RADICAL);
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mNotationsToDraw |= NOTATION_RADICAL;
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}
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NS_IMETHODIMP
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nsMathMLmsqrtFrame::InheritAutomaticData(nsIFrame* aParent)
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{
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nsMathMLContainerFrame::InheritAutomaticData(aParent);
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mPresentationData.flags |= NS_MATHML_STRETCH_ALL_CHILDREN_VERTICALLY;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsMathMLmsqrtFrame::AttributeChanged(int32_t aNameSpaceID,
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nsIAtom* aAttribute,
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int32_t aModType)
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{
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return nsMathMLContainerFrame::
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AttributeChanged(aNameSpaceID, aAttribute, aModType);
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}
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