mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
2c717f398d
This changes a number of callers that were previously bypassing the use of the correct language (with either no language or the charset-detected language on the pres context via nsPresContext::GetMetricsFor) and/or the correct user font set to pass the correct values, which should improve the correctness of the behavior of whatever they were using the fonts for, and also reduce the number of unique sets of font metrics requested (which helps nsFontCache effectiveness).
724 lines
24 KiB
C++
724 lines
24 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* 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
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* The University Of Queensland.
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* Portions created by the Initial Developer are Copyright (C) 1999
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* the Initial Developer. 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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* David J. Fiddes <D.J.Fiddes@hw.ac.uk>
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* Pierre Phaneuf <pp@ludusdesign.com>
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* Frederic Wang <fred.wang@free.fr>
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* Florian Scholz <elchi3@elchi3.de>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either of the GNU General Public License Version 2 or later (the "GPL"),
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* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "nsCOMPtr.h"
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#include "nsFrame.h"
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#include "nsPresContext.h"
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#include "nsStyleContext.h"
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#include "nsStyleConsts.h"
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#include "nsRenderingContext.h"
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#include "nsMathMLmfencedFrame.h"
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//
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// <mfenced> -- surround content with a pair of fences
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//
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nsIFrame*
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NS_NewMathMLmfencedFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
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{
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return new (aPresShell) nsMathMLmfencedFrame(aContext);
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}
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NS_IMPL_FRAMEARENA_HELPERS(nsMathMLmfencedFrame)
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nsMathMLmfencedFrame::~nsMathMLmfencedFrame()
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{
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RemoveFencesAndSeparators();
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}
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NS_IMETHODIMP
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nsMathMLmfencedFrame::InheritAutomaticData(nsIFrame* aParent)
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{
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// let the base class get the default from our parent
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nsMathMLContainerFrame::InheritAutomaticData(aParent);
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mPresentationData.flags |= NS_MATHML_STRETCH_ALL_CHILDREN_VERTICALLY;
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RemoveFencesAndSeparators();
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CreateFencesAndSeparators(PresContext());
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return NS_OK;
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}
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NS_IMETHODIMP
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nsMathMLmfencedFrame::SetInitialChildList(nsIAtom* aListName,
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nsFrameList& aChildList)
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{
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// First, let the base class do its work
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nsresult rv = nsMathMLContainerFrame::SetInitialChildList(aListName, aChildList);
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if (NS_FAILED(rv)) return rv;
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// InheritAutomaticData will not get called if our parent is not a mathml
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// frame, so initialize NS_MATHML_STRETCH_ALL_CHILDREN_VERTICALLY for
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// GetPreferredStretchSize() from Reflow().
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mPresentationData.flags |= NS_MATHML_STRETCH_ALL_CHILDREN_VERTICALLY;
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// No need to track the style contexts given to our MathML chars.
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// The Style System will use Get/SetAdditionalStyleContext() to keep them
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// up-to-date if dynamic changes arise.
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CreateFencesAndSeparators(PresContext());
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return NS_OK;
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}
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NS_IMETHODIMP
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nsMathMLmfencedFrame::AttributeChanged(PRInt32 aNameSpaceID,
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nsIAtom* aAttribute,
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PRInt32 aModType)
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{
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RemoveFencesAndSeparators();
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CreateFencesAndSeparators(PresContext());
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return nsMathMLContainerFrame::
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AttributeChanged(aNameSpaceID, aAttribute, aModType);
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}
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nsresult
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nsMathMLmfencedFrame::ChildListChanged(PRInt32 aModType)
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{
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RemoveFencesAndSeparators();
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CreateFencesAndSeparators(PresContext());
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return nsMathMLContainerFrame::ChildListChanged(aModType);
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}
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void
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nsMathMLmfencedFrame::RemoveFencesAndSeparators()
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{
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delete mOpenChar;
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delete mCloseChar;
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if (mSeparatorsChar) delete[] mSeparatorsChar;
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mOpenChar = nsnull;
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mCloseChar = nsnull;
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mSeparatorsChar = nsnull;
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mSeparatorsCount = 0;
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}
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void
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nsMathMLmfencedFrame::CreateFencesAndSeparators(nsPresContext* aPresContext)
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{
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nsAutoString value;
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PRBool isMutable = PR_FALSE;
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//////////////
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// see if the opening fence is there ...
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if (!GetAttribute(mContent, mPresentationData.mstyle, nsGkAtoms::open,
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value)) {
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value = PRUnichar('('); // default as per the MathML REC
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} else {
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value.CompressWhitespace();
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}
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if (!value.IsEmpty()) {
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mOpenChar = new nsMathMLChar;
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mOpenChar->SetData(aPresContext, value);
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isMutable = nsMathMLOperators::IsMutableOperator(value);
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ResolveMathMLCharStyle(aPresContext, mContent, mStyleContext, mOpenChar, isMutable);
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}
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//////////////
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// see if the closing fence is there ...
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if(!GetAttribute(mContent, mPresentationData.mstyle,
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nsGkAtoms::close, value)) {
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value = PRUnichar(')'); // default as per the MathML REC
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} else {
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value.CompressWhitespace();
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}
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if (!value.IsEmpty()) {
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mCloseChar = new nsMathMLChar;
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mCloseChar->SetData(aPresContext, value);
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isMutable = nsMathMLOperators::IsMutableOperator(value);
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ResolveMathMLCharStyle(aPresContext, mContent, mStyleContext, mCloseChar, isMutable);
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}
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//////////////
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// see if separators are there ...
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if (!GetAttribute(mContent, mPresentationData.mstyle,
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nsGkAtoms::separators_, value)) {
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value = PRUnichar(','); // default as per the MathML REC
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} else {
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value.StripWhitespace();
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}
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mSeparatorsCount = value.Length();
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if (0 < mSeparatorsCount) {
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PRInt32 sepCount = mFrames.GetLength() - 1;
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if (0 < sepCount) {
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mSeparatorsChar = new nsMathMLChar[sepCount];
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nsAutoString sepChar;
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for (PRInt32 i = 0; i < sepCount; i++) {
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if (i < mSeparatorsCount) {
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sepChar = value[i];
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isMutable = nsMathMLOperators::IsMutableOperator(sepChar);
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}
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else {
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sepChar = value[mSeparatorsCount-1];
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// keep the value of isMutable that was set earlier
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}
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mSeparatorsChar[i].SetData(aPresContext, sepChar);
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ResolveMathMLCharStyle(aPresContext, mContent, mStyleContext, &mSeparatorsChar[i], isMutable);
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}
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mSeparatorsCount = sepCount;
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} else {
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// No separators. Note that sepCount can be -1 here, so don't
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// set mSeparatorsCount to it.
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mSeparatorsCount = 0;
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}
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}
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}
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NS_IMETHODIMP
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nsMathMLmfencedFrame::BuildDisplayList(nsDisplayListBuilder* aBuilder,
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const nsRect& aDirtyRect,
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const nsDisplayListSet& aLists)
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{
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/////////////
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// display the content
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nsresult rv = nsMathMLContainerFrame::BuildDisplayList(aBuilder, aDirtyRect, aLists);
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NS_ENSURE_SUCCESS(rv, rv);
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////////////
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// display fences and separators
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if (mOpenChar) {
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rv = mOpenChar->Display(aBuilder, this, aLists);
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NS_ENSURE_SUCCESS(rv, rv);
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}
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if (mCloseChar) {
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rv = mCloseChar->Display(aBuilder, this, aLists);
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NS_ENSURE_SUCCESS(rv, rv);
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}
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for (PRInt32 i = 0; i < mSeparatorsCount; i++) {
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rv = mSeparatorsChar[i].Display(aBuilder, this, aLists);
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NS_ENSURE_SUCCESS(rv, rv);
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}
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return NS_OK;
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}
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NS_IMETHODIMP
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nsMathMLmfencedFrame::Reflow(nsPresContext* aPresContext,
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nsHTMLReflowMetrics& aDesiredSize,
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const nsHTMLReflowState& aReflowState,
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nsReflowStatus& aStatus)
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{
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nsresult rv;
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aDesiredSize.width = aDesiredSize.height = 0;
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aDesiredSize.ascent = 0;
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aDesiredSize.mBoundingMetrics = nsBoundingMetrics();
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PRInt32 i;
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const nsStyleFont* font = GetStyleFont();
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nsRefPtr<nsFontMetrics> fm;
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nsLayoutUtils::GetFontMetricsForFrame(this, getter_AddRefs(fm));
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aReflowState.rendContext->SetFont(fm);
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nscoord axisHeight, em;
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GetAxisHeight(*aReflowState.rendContext, fm, axisHeight);
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GetEmHeight(fm, em);
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// leading to be left at the top and the bottom of stretched chars
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nscoord leading = NSToCoordRound(0.2f * em);
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/////////////
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// Reflow children
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// Asking each child to cache its bounding metrics
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// Note that we don't use the base method nsMathMLContainerFrame::Reflow()
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// because we want to stretch our fences, separators and stretchy frames using
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// the *same* initial aDesiredSize.mBoundingMetrics. If we were to use the base
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// method here, our stretchy frames will be stretched and placed, and we may
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// end up stretching our fences/separators with a different aDesiredSize.
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// XXX The above decision was revisited in bug 121748 and this code can be
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// refactored to use nsMathMLContainerFrame::Reflow() at some stage.
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nsReflowStatus childStatus;
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nsSize availSize(aReflowState.ComputedWidth(), NS_UNCONSTRAINEDSIZE);
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nsIFrame* firstChild = GetFirstChild(nsnull);
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nsIFrame* childFrame = firstChild;
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nscoord ascent = 0, descent = 0;
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if (firstChild || mOpenChar || mCloseChar || mSeparatorsCount > 0) {
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// We use the ASCII metrics to get our minimum height. This way,
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// if we have borders or a background, they will fit better with
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// other elements on the line.
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ascent = fm->MaxAscent();
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descent = fm->MaxDescent();
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}
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while (childFrame) {
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nsHTMLReflowMetrics childDesiredSize(aDesiredSize.mFlags
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| NS_REFLOW_CALC_BOUNDING_METRICS);
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nsHTMLReflowState childReflowState(aPresContext, aReflowState,
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childFrame, availSize);
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rv = ReflowChild(childFrame, aPresContext, childDesiredSize,
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childReflowState, childStatus);
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//NS_ASSERTION(NS_FRAME_IS_COMPLETE(childStatus), "bad status");
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if (NS_FAILED(rv)) {
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// Call DidReflow() for the child frames we successfully did reflow.
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DidReflowChildren(firstChild, childFrame);
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return rv;
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}
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SaveReflowAndBoundingMetricsFor(childFrame, childDesiredSize,
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childDesiredSize.mBoundingMetrics);
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nscoord childDescent = childDesiredSize.height - childDesiredSize.ascent;
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if (descent < childDescent)
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descent = childDescent;
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if (ascent < childDesiredSize.ascent)
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ascent = childDesiredSize.ascent;
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childFrame = childFrame->GetNextSibling();
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}
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/////////////
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// Ask stretchy children to stretch themselves
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nsBoundingMetrics containerSize;
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nsStretchDirection stretchDir = NS_STRETCH_DIRECTION_VERTICAL;
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GetPreferredStretchSize(*aReflowState.rendContext,
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0, /* i.e., without embellishments */
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stretchDir, containerSize);
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childFrame = firstChild;
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while (childFrame) {
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nsIMathMLFrame* mathmlChild = do_QueryFrame(childFrame);
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if (mathmlChild) {
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nsHTMLReflowMetrics childDesiredSize;
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// retrieve the metrics that was stored at the previous pass
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GetReflowAndBoundingMetricsFor(childFrame, childDesiredSize,
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childDesiredSize.mBoundingMetrics);
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mathmlChild->Stretch(*aReflowState.rendContext,
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stretchDir, containerSize, childDesiredSize);
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// store the updated metrics
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SaveReflowAndBoundingMetricsFor(childFrame, childDesiredSize,
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childDesiredSize.mBoundingMetrics);
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nscoord childDescent = childDesiredSize.height - childDesiredSize.ascent;
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if (descent < childDescent)
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descent = childDescent;
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if (ascent < childDesiredSize.ascent)
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ascent = childDesiredSize.ascent;
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}
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childFrame = childFrame->GetNextSibling();
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}
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// bug 121748: for surrounding fences & separators, use a size that covers everything
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GetPreferredStretchSize(*aReflowState.rendContext,
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STRETCH_CONSIDER_EMBELLISHMENTS,
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stretchDir, containerSize);
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//////////////////////////////////////////
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// Prepare the opening fence, separators, and closing fence, and
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// adjust the origin of children.
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// we need to center around the axis
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nscoord delta = NS_MAX(containerSize.ascent - axisHeight,
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containerSize.descent + axisHeight);
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containerSize.ascent = delta + axisHeight;
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containerSize.descent = delta - axisHeight;
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/////////////////
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// opening fence ...
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ReflowChar(aPresContext, *aReflowState.rendContext, mOpenChar,
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NS_MATHML_OPERATOR_FORM_PREFIX, font->mScriptLevel,
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axisHeight, leading, em, containerSize, ascent, descent);
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/////////////////
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// separators ...
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for (i = 0; i < mSeparatorsCount; i++) {
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ReflowChar(aPresContext, *aReflowState.rendContext, &mSeparatorsChar[i],
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NS_MATHML_OPERATOR_FORM_INFIX, font->mScriptLevel,
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axisHeight, leading, em, containerSize, ascent, descent);
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}
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/////////////////
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// closing fence ...
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ReflowChar(aPresContext, *aReflowState.rendContext, mCloseChar,
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NS_MATHML_OPERATOR_FORM_POSTFIX, font->mScriptLevel,
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axisHeight, leading, em, containerSize, ascent, descent);
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//////////////////
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// Adjust the origins of each child.
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// and update our bounding metrics
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i = 0;
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nscoord dx = 0;
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nsBoundingMetrics bm;
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PRBool firstTime = PR_TRUE;
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if (mOpenChar) {
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PlaceChar(mOpenChar, ascent, bm, dx);
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aDesiredSize.mBoundingMetrics = bm;
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firstTime = PR_FALSE;
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}
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childFrame = firstChild;
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while (childFrame) {
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nsHTMLReflowMetrics childSize;
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GetReflowAndBoundingMetricsFor(childFrame, childSize, bm);
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if (firstTime) {
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firstTime = PR_FALSE;
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aDesiredSize.mBoundingMetrics = bm;
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}
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else
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aDesiredSize.mBoundingMetrics += bm;
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FinishReflowChild(childFrame, aPresContext, nsnull, childSize,
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dx, ascent - childSize.ascent, 0);
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dx += childSize.width;
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if (i < mSeparatorsCount) {
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PlaceChar(&mSeparatorsChar[i], ascent, bm, dx);
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aDesiredSize.mBoundingMetrics += bm;
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}
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i++;
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childFrame = childFrame->GetNextSibling();
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}
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if (mCloseChar) {
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PlaceChar(mCloseChar, ascent, bm, dx);
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if (firstTime)
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aDesiredSize.mBoundingMetrics = bm;
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else
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aDesiredSize.mBoundingMetrics += bm;
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}
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aDesiredSize.width = aDesiredSize.mBoundingMetrics.width;
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aDesiredSize.height = ascent + descent;
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aDesiredSize.ascent = ascent;
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SetBoundingMetrics(aDesiredSize.mBoundingMetrics);
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SetReference(nsPoint(0, aDesiredSize.ascent));
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// see if we should fix the spacing
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FixInterFrameSpacing(aDesiredSize);
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// Finished with these:
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ClearSavedChildMetrics();
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// Set our overflow area
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GatherAndStoreOverflow(&aDesiredSize);
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aStatus = NS_FRAME_COMPLETE;
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NS_FRAME_SET_TRUNCATION(aStatus, aReflowState, aDesiredSize);
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return NS_OK;
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}
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static void
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GetCharSpacing(nsMathMLChar* aMathMLChar,
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|
nsOperatorFlags aForm,
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|
PRInt32 aScriptLevel,
|
|
nscoord em,
|
|
nscoord& aLeftSpace,
|
|
nscoord& aRightSpace)
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|
{
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|
nsAutoString data;
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aMathMLChar->GetData(data);
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nsOperatorFlags flags = 0;
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float lspace = 0.0f;
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float rspace = 0.0f;
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PRBool found = nsMathMLOperators::LookupOperator(data, aForm,
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&flags, &lspace, &rspace);
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// We don't want extra space when we are a script
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if (found && aScriptLevel > 0) {
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lspace /= 2.0f;
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rspace /= 2.0f;
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}
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aLeftSpace = NSToCoordRound(lspace * em);
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aRightSpace = NSToCoordRound(rspace * em);
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}
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|
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// helper functions to perform the common task of formatting our chars
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/*static*/ nsresult
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nsMathMLmfencedFrame::ReflowChar(nsPresContext* aPresContext,
|
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nsRenderingContext& aRenderingContext,
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nsMathMLChar* aMathMLChar,
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nsOperatorFlags aForm,
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PRInt32 aScriptLevel,
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nscoord axisHeight,
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nscoord leading,
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nscoord em,
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nsBoundingMetrics& aContainerSize,
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nscoord& aAscent,
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nscoord& aDescent)
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|
{
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|
if (aMathMLChar && 0 < aMathMLChar->Length()) {
|
|
nscoord leftSpace;
|
|
nscoord rightSpace;
|
|
GetCharSpacing(aMathMLChar, aForm, aScriptLevel, em, leftSpace, rightSpace);
|
|
|
|
// stretch the char to the appropriate height if it is not big enough.
|
|
nsBoundingMetrics charSize;
|
|
nsresult res = aMathMLChar->Stretch(aPresContext, aRenderingContext,
|
|
NS_STRETCH_DIRECTION_VERTICAL,
|
|
aContainerSize, charSize);
|
|
|
|
if (NS_STRETCH_DIRECTION_UNSUPPORTED != aMathMLChar->GetStretchDirection()) {
|
|
// has changed... so center the char around the axis
|
|
nscoord height = charSize.ascent + charSize.descent;
|
|
charSize.ascent = height/2 + axisHeight;
|
|
charSize.descent = height - charSize.ascent;
|
|
}
|
|
else {
|
|
// either it hasn't changed or stretching the char failed (i.e.,
|
|
// GetBoundingMetrics failed)
|
|
leading = 0;
|
|
if (NS_FAILED(res)) {
|
|
nsAutoString data;
|
|
aMathMLChar->GetData(data);
|
|
nsBoundingMetrics metrics =
|
|
aRenderingContext.GetBoundingMetrics(data.get(), data.Length());
|
|
charSize.ascent = metrics.ascent;
|
|
charSize.descent = metrics.descent;
|
|
charSize.width = metrics.width;
|
|
// Set this as the bounding metrics of the MathMLChar to leave
|
|
// the necessary room to paint the char.
|
|
aMathMLChar->SetBoundingMetrics(charSize);
|
|
}
|
|
}
|
|
|
|
if (aAscent < charSize.ascent + leading)
|
|
aAscent = charSize.ascent + leading;
|
|
if (aDescent < charSize.descent + leading)
|
|
aDescent = charSize.descent + leading;
|
|
|
|
// account the spacing
|
|
charSize.width += leftSpace + rightSpace;
|
|
|
|
// x-origin is used to store lspace ...
|
|
// y-origin is used to stored the ascent ...
|
|
aMathMLChar->SetRect(nsRect(leftSpace,
|
|
charSize.ascent, charSize.width,
|
|
charSize.ascent + charSize.descent));
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
/*static*/ void
|
|
nsMathMLmfencedFrame::PlaceChar(nsMathMLChar* aMathMLChar,
|
|
nscoord aDesiredAscent,
|
|
nsBoundingMetrics& bm,
|
|
nscoord& dx)
|
|
{
|
|
aMathMLChar->GetBoundingMetrics(bm);
|
|
|
|
// the char's x-origin was used to store lspace ...
|
|
// the char's y-origin was used to store the ascent ...
|
|
// the char's width was used to store the advance with (with spacing) ...
|
|
nsRect rect;
|
|
aMathMLChar->GetRect(rect);
|
|
|
|
nscoord dy = aDesiredAscent - rect.y;
|
|
if (aMathMLChar->GetStretchDirection() != NS_STRETCH_DIRECTION_UNSUPPORTED) {
|
|
// the stretchy char will be centered around the axis
|
|
// so we adjust the returned bounding metrics accordingly
|
|
bm.descent = (bm.ascent + bm.descent) - rect.y;
|
|
bm.ascent = rect.y;
|
|
}
|
|
|
|
aMathMLChar->SetRect(nsRect(dx + rect.x, dy, bm.width, rect.height));
|
|
|
|
bm.leftBearing += rect.x;
|
|
bm.rightBearing += rect.x;
|
|
|
|
// return rect.width since it includes lspace and rspace
|
|
bm.width = rect.width;
|
|
dx += rect.width;
|
|
}
|
|
|
|
static nscoord
|
|
GetMaxCharWidth(nsPresContext* aPresContext,
|
|
nsRenderingContext* aRenderingContext,
|
|
nsMathMLChar* aMathMLChar,
|
|
nsOperatorFlags aForm,
|
|
PRInt32 aScriptLevel,
|
|
nscoord em)
|
|
{
|
|
nscoord width = aMathMLChar->GetMaxWidth(aPresContext, *aRenderingContext);
|
|
|
|
if (0 < aMathMLChar->Length()) {
|
|
nscoord leftSpace;
|
|
nscoord rightSpace;
|
|
GetCharSpacing(aMathMLChar, aForm, aScriptLevel, em, leftSpace, rightSpace);
|
|
|
|
width += leftSpace + rightSpace;
|
|
}
|
|
|
|
return width;
|
|
}
|
|
|
|
/* virtual */ nscoord
|
|
nsMathMLmfencedFrame::GetIntrinsicWidth(nsRenderingContext* aRenderingContext)
|
|
{
|
|
nscoord width = 0;
|
|
|
|
nsPresContext* presContext = PresContext();
|
|
const nsStyleFont* font = GetStyleFont();
|
|
nsRefPtr<nsFontMetrics> fm;
|
|
nsLayoutUtils::GetFontMetricsForFrame(this, getter_AddRefs(fm));
|
|
nscoord em;
|
|
GetEmHeight(fm, em);
|
|
|
|
if (mOpenChar) {
|
|
width +=
|
|
GetMaxCharWidth(presContext, aRenderingContext, mOpenChar,
|
|
NS_MATHML_OPERATOR_FORM_PREFIX, font->mScriptLevel, em);
|
|
}
|
|
|
|
PRInt32 i = 0;
|
|
nsIFrame* childFrame = GetFirstChild(nsnull);
|
|
while (childFrame) {
|
|
// XXX This includes margin while Reflow currently doesn't consider
|
|
// margin, so we may end up with too much space, but, with stretchy
|
|
// characters, this is an approximation anyway.
|
|
width += nsLayoutUtils::IntrinsicForContainer(aRenderingContext, childFrame,
|
|
nsLayoutUtils::PREF_WIDTH);
|
|
|
|
if (i < mSeparatorsCount) {
|
|
width +=
|
|
GetMaxCharWidth(presContext, aRenderingContext, &mSeparatorsChar[i],
|
|
NS_MATHML_OPERATOR_FORM_INFIX, font->mScriptLevel, em);
|
|
}
|
|
i++;
|
|
|
|
childFrame = childFrame->GetNextSibling();
|
|
}
|
|
|
|
if (mCloseChar) {
|
|
width +=
|
|
GetMaxCharWidth(presContext, aRenderingContext, mCloseChar,
|
|
NS_MATHML_OPERATOR_FORM_POSTFIX, font->mScriptLevel, em);
|
|
}
|
|
|
|
return width;
|
|
}
|
|
|
|
nscoord
|
|
nsMathMLmfencedFrame::FixInterFrameSpacing(nsHTMLReflowMetrics& aDesiredSize)
|
|
{
|
|
nscoord gap = nsMathMLContainerFrame::FixInterFrameSpacing(aDesiredSize);
|
|
if (!gap) return 0;
|
|
|
|
nsRect rect;
|
|
if (mOpenChar) {
|
|
mOpenChar->GetRect(rect);
|
|
rect.MoveBy(gap, 0);
|
|
mOpenChar->SetRect(rect);
|
|
}
|
|
if (mCloseChar) {
|
|
mCloseChar->GetRect(rect);
|
|
rect.MoveBy(gap, 0);
|
|
mCloseChar->SetRect(rect);
|
|
}
|
|
for (PRInt32 i = 0; i < mSeparatorsCount; i++) {
|
|
mSeparatorsChar[i].GetRect(rect);
|
|
rect.MoveBy(gap, 0);
|
|
mSeparatorsChar[i].SetRect(rect);
|
|
}
|
|
return gap;
|
|
}
|
|
|
|
// ----------------------
|
|
// the Style System will use these to pass the proper style context to our MathMLChar
|
|
nsStyleContext*
|
|
nsMathMLmfencedFrame::GetAdditionalStyleContext(PRInt32 aIndex) const
|
|
{
|
|
PRInt32 openIndex = -1;
|
|
PRInt32 closeIndex = -1;
|
|
PRInt32 lastIndex = mSeparatorsCount-1;
|
|
|
|
if (mOpenChar) {
|
|
lastIndex++;
|
|
openIndex = lastIndex;
|
|
}
|
|
if (mCloseChar) {
|
|
lastIndex++;
|
|
closeIndex = lastIndex;
|
|
}
|
|
if (aIndex < 0 || aIndex > lastIndex) {
|
|
return nsnull;
|
|
}
|
|
|
|
if (aIndex < mSeparatorsCount) {
|
|
return mSeparatorsChar[aIndex].GetStyleContext();
|
|
}
|
|
else if (aIndex == openIndex) {
|
|
return mOpenChar->GetStyleContext();
|
|
}
|
|
else if (aIndex == closeIndex) {
|
|
return mCloseChar->GetStyleContext();
|
|
}
|
|
return nsnull;
|
|
}
|
|
|
|
void
|
|
nsMathMLmfencedFrame::SetAdditionalStyleContext(PRInt32 aIndex,
|
|
nsStyleContext* aStyleContext)
|
|
{
|
|
PRInt32 openIndex = -1;
|
|
PRInt32 closeIndex = -1;
|
|
PRInt32 lastIndex = mSeparatorsCount-1;
|
|
|
|
if (mOpenChar) {
|
|
lastIndex++;
|
|
openIndex = lastIndex;
|
|
}
|
|
if (mCloseChar) {
|
|
lastIndex++;
|
|
closeIndex = lastIndex;
|
|
}
|
|
if (aIndex < 0 || aIndex > lastIndex) {
|
|
return;
|
|
}
|
|
|
|
if (aIndex < mSeparatorsCount) {
|
|
mSeparatorsChar[aIndex].SetStyleContext(aStyleContext);
|
|
}
|
|
else if (aIndex == openIndex) {
|
|
mOpenChar->SetStyleContext(aStyleContext);
|
|
}
|
|
else if (aIndex == closeIndex) {
|
|
mCloseChar->SetStyleContext(aStyleContext);
|
|
}
|
|
}
|