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// File "MathmlNode.h"
//
// blahtex (version 0.4.4)
// a TeX to MathML converter designed with MediaWiki in mind
// Copyright (C) 2006, David Harvey
//
// blahtexml (version 0.5)
// Copyright (C) 2007-2008, Gilles Van Assche
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
#ifndef BLAHTEX_MATHMLNODE_H
#define BLAHTEX_MATHMLNODE_H
#include <iostream>
#include <map>
#include <list>
#include <string>
#include "Misc.h"
#ifdef BLAHTEXML_USING_XERCES
#include <xercesc/sax2/ContentHandler.hpp>
XERCES_CPP_NAMESPACE_USE
#endif
namespace blahtex
{
// MathmlFont lists all possible MathML "mathvariant" values. Blahtex
// uses these to record fonts in the layout tree; they get converted to
// MathML 1.x font attributes if needed.
enum MathmlFont
{
cMathmlFontNormal,
cMathmlFontBold,
cMathmlFontItalic,
cMathmlFontBoldItalic,
cMathmlFontDoubleStruck,
cMathmlFontBoldFraktur,
cMathmlFontScript,
cMathmlFontBoldScript,
cMathmlFontFraktur,
cMathmlFontSansSerif,
cMathmlFontBoldSansSerif,
cMathmlFontSansSerifItalic,
cMathmlFontSansSerifBoldItalic,
cMathmlFontMonospace
};
// String versions of the MathML mathvariant fonts.
// (See enum MathmlFont in LayoutTree.h.)
extern std::wstring gMathmlFontStrings[];
// Represents a node in an MathML tree.
struct MathmlNode
{
enum Type
{
// Leaf nodes types ("token elements" in MathML documentation):
cTypeMi,
cTypeMo,
cTypeMn,
cTypeMspace,
cTypeMtext,
// Internal nodes types:
cTypeMrow,
cTypeMstyle,
cTypeMsub,
cTypeMsup,
cTypeMsubsup,
cTypeMunder,
cTypeMover,
cTypeMunderover,
cTypeMfrac,
cTypeMsqrt,
cTypeMroot,
cTypeMtable,
cTypeMtr,
cTypeMtd,
cTypeMpadded
}
mType;
enum Attribute
{
cAttributeDisplaystyle,
cAttributeScriptlevel,
cAttributeMathvariant,
cAttributeMathcolor,
cAttributeLspace,
cAttributeRspace,
cAttributeWidth,
cAttributeStretchy,
cAttributeMinsize,
cAttributeMaxsize,
cAttributeAccent,
cAttributeMovablelimits,
cAttributeLinethickness,
cAttributeColumnalign,
cAttributeColumnspacing,
cAttributeRowspacing,
cAttributeFontfamily,
cAttributeFontstyle,
cAttributeFontweight
};
std::map<Attribute, std::wstring> mAttributes;
// mText is only used for leaf nodes: it holds the text that is
// displayed between the opening and closing tags
std::wstring mText;
// mChildren is only used for internal nodes
std::list<MathmlNode*> mChildren;
MathmlNode(Type type, const std::wstring& text = L"") :
mType(type),
mText(text)
{ }
~MathmlNode();
// This function adds mathvariant (for MathML 2.0) or fontstyle/
// fontweight/fontfamily (for MathML 1.x) as appropriate to this node
// to obtain the desired font. It knows about MathML defaults (like the
// annoying automatic italic for single character <mi> nodes).
void AddFontAttributes(
MathmlFont desiredFont,
const MathmlOptions& options
);
// Print() recursively prints the tree rooted at this node to the
// given output stream.
//
// XML entities translated according to EncodingOptions.
//
// If "indent" is true, it will print each tag pair on a new line, and
// add appropriate indenting.
void Print(
std::wostream& os,
const EncodingOptions& options,
bool indent,
int depth = 0
) const;
// Used internally by Print:
void PrintType(std::wostream& os) const;
void PrintAttributes(std::wostream& os) const;
#ifdef BLAHTEXML_USING_XERCES
void PrintAsSAX2(ContentHandler& sax, const std::wstring& prefix, bool ignoreFirstmrow) const;
#endif
};
}
#endif
// end of file @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
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