52 lines
1.8 KiB
C++
52 lines
1.8 KiB
C++
/*
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* The contents of this file are subject to the Mozilla Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is Mozilla MathML Project.
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*
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* The Initial Developer of the Original Code is The University Of
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* Queensland. Portions created by The University Of Queensland are
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* Copyright (C) 1999 The University Of Queensland. All Rights Reserved.
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*
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* Contributor(s):
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* Roger B. Sidje <rbs@maths.uq.edu.au>
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*/
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#include "nsMathMLFrame.h"
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NS_IMPL_QUERY_INTERFACE1(nsMathMLFrame, nsIMathMLFrame)
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NS_IMETHODIMP
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nsMathMLFrame::UpdatePresentationData(PRInt32 aScriptLevelIncrement,
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PRUint32 aFlagsValues,
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PRUint32 aFlagsToUpdate)
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{
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mPresentationData.scriptLevel += aScriptLevelIncrement;
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// update flags that are relevant to this call
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if (NS_MATHML_IS_DISPLAYSTYLE(aFlagsToUpdate)) {
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// updating the displaystyle flag is allowed
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if (NS_MATHML_IS_DISPLAYSTYLE(aFlagsValues)) {
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mPresentationData.flags |= NS_MATHML_DISPLAYSTYLE;
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}
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else {
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mPresentationData.flags &= ~NS_MATHML_DISPLAYSTYLE;
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}
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}
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if (NS_MATHML_IS_COMPRESSED(aFlagsToUpdate)) {
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// updating the compression flag is allowed
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if (NS_MATHML_IS_COMPRESSED(aFlagsValues)) {
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// 'compressed' means 'prime' style in App. G, TeXbook
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mPresentationData.flags |= NS_MATHML_COMPRESSED;
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}
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// no else. the flag is sticky. it retains its value once it is set
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}
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return NS_OK;
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}
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