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287 lines
6.3 KiB
C++
287 lines
6.3 KiB
C++
/**
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* \file InsetMathSymbol.cpp
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* This file is part of LyX, the document processor.
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* Licence details can be found in the file COPYING.
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*
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* \author André Pönitz
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*
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* Full author contact details are available in file CREDITS.
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*/
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#include <config.h>
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#include "InsetMathSymbol.h"
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#include "Dimension.h"
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#include "LaTeXFeatures.h"
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#include "MathAtom.h"
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#include "MathParser.h"
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#include "MathStream.h"
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#include "MathSupport.h"
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#include "support/debug.h"
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#include "support/docstream.h"
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#include "support/textutils.h"
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#include <boost/scoped_ptr.hpp>
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namespace lyx {
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InsetMathSymbol::InsetMathSymbol(latexkeys const * l)
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: sym_(l), h_(0), kerning_(0), scriptable_(false)
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{}
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InsetMathSymbol::InsetMathSymbol(char const * name)
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: sym_(in_word_set(from_ascii(name))), h_(0),
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kerning_(0), scriptable_(false)
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{}
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InsetMathSymbol::InsetMathSymbol(docstring const & name)
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: sym_(in_word_set(name)), h_(0), kerning_(0), scriptable_(false)
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{}
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Inset * InsetMathSymbol::clone() const
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{
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return new InsetMathSymbol(*this);
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}
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docstring InsetMathSymbol::name() const
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{
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return sym_->name;
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}
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void InsetMathSymbol::metrics(MetricsInfo & mi, Dimension & dim) const
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{
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//lyxerr << "metrics: symbol: '" << sym_->name
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// << "' in font: '" << sym_->inset
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// << "' drawn as: '" << sym_->draw
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// << "'" << endl;
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bool const italic_upcase_greek = sym_->inset == "cmr" &&
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sym_->extra == "mathalpha" &&
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mi.base.fontname == "mathit";
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docstring const font = italic_upcase_greek ? from_ascii("cmm") : sym_->inset;
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int const em = mathed_char_width(mi.base.font, 'M');
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FontSetChanger dummy(mi.base, font);
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mathed_string_dim(mi.base.font, sym_->draw, dim);
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docstring::const_reverse_iterator rit = sym_->draw.rbegin();
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kerning_ = mathed_char_kerning(mi.base.font, *rit);
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// correct height for broken cmex and wasy font
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if (sym_->inset == "cmex" || sym_->inset == "wasy") {
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h_ = 4 * dim.des / 5;
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dim.asc += h_;
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dim.des -= h_;
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}
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// seperate things a bit
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if (isRelOp())
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dim.wid += static_cast<int>(0.5 * em + 0.5);
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else
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dim.wid += static_cast<int>(0.1667 * em + 0.5);
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scriptable_ = false;
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if (mi.base.style == LM_ST_DISPLAY)
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if (sym_->inset == "cmex" || sym_->inset == "esint" ||
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sym_->extra == "funclim")
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scriptable_ = true;
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}
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void InsetMathSymbol::draw(PainterInfo & pi, int x, int y) const
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{
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//lyxerr << "metrics: symbol: '" << sym_->name
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// << "' in font: '" << sym_->inset
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// << "' drawn as: '" << sym_->draw
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// << "'" << endl;
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bool const italic_upcase_greek = sym_->inset == "cmr" &&
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sym_->extra == "mathalpha" &&
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pi.base.fontname == "mathit";
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docstring const font = italic_upcase_greek ? from_ascii("cmm") : sym_->inset;
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int const em = mathed_char_width(pi.base.font, 'M');
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if (isRelOp())
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x += static_cast<int>(0.25*em+0.5);
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else
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x += static_cast<int>(0.0833*em+0.5);
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FontSetChanger dummy(pi.base, font);
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pi.draw(x, y - h_, sym_->draw);
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}
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InsetMath::mode_type InsetMathSymbol::currentMode() const
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{
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return sym_->extra == "textmode" ? TEXT_MODE : MATH_MODE;
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}
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bool InsetMathSymbol::isRelOp() const
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{
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return sym_->extra == "mathrel";
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}
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bool InsetMathSymbol::isOrdAlpha() const
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{
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return sym_->extra == "mathord" || sym_->extra == "mathalpha";
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}
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bool InsetMathSymbol::isScriptable() const
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{
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return scriptable_;
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}
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bool InsetMathSymbol::takesLimits() const
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{
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return
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sym_->inset == "cmex" ||
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sym_->inset == "lyxboldsymb" ||
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sym_->inset == "esint" ||
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sym_->extra == "funclim";
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}
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void InsetMathSymbol::normalize(NormalStream & os) const
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{
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os << "[symbol " << name() << ']';
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}
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void InsetMathSymbol::maple(MapleStream & os) const
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{
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if (name() == "cdot")
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os << '*';
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else if (name() == "infty")
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os << "infinity";
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else
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os << name();
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}
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void InsetMathSymbol::maxima(MaximaStream & os) const
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{
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if (name() == "cdot")
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os << '*';
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else if (name() == "infty")
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os << "inf";
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else if (name() == "pi")
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os << "%pi";
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else
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os << name();
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}
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void InsetMathSymbol::mathematica(MathematicaStream & os) const
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{
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if ( name() == "pi") { os << "Pi"; return;}
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if ( name() == "infty") { os << "Infinity"; return;}
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if ( name() == "cdot") { os << '*'; return;}
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os << name();
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}
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// FIXME This will likely need some work.
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char const * MathMLtype(docstring const & s)
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{
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if (s == "mathord")
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return "mi";
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return "mo";
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}
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void InsetMathSymbol::mathmlize(MathStream & os) const
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{
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// FIXME We may need to do more interesting things
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// with MathMLtype.
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char const * type = MathMLtype(sym_->extra);
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os << '<' << type << "> ";
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if (sym_->xmlname == "x")
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// unknown so far
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os << name();
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else
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os << sym_->xmlname;
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os << " </" << type << '>';
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}
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void InsetMathSymbol::htmlize(HtmlStream & os, bool spacing) const
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{
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// FIXME We may need to do more interesting things
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// with MathMLtype.
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char const * type = MathMLtype(sym_->extra);
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bool op = (std::string(type) == "mo");
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if (sym_->xmlname == "x")
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// unknown so far
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os << ' ' << name() << ' ';
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else if (op && spacing)
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os << ' ' << sym_->xmlname << ' ';
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else
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os << sym_->xmlname;
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}
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void InsetMathSymbol::htmlize(HtmlStream & os) const
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{
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htmlize(os, true);
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}
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void InsetMathSymbol::octave(OctaveStream & os) const
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{
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if (name() == "cdot")
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os << '*';
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else
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os << name();
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}
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void InsetMathSymbol::write(WriteStream & os) const
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{
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boost::scoped_ptr<MathEnsurer> ensurer;
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if (currentMode() != TEXT_MODE)
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ensurer.reset(new MathEnsurer(os));
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os << '\\' << name();
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// $,#, etc. In theory the restriction based on catcodes, but then
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// we do not handle catcodes very well, let alone cat code changes,
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// so being outside the alpha range is good enough.
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if (name().size() == 1 && !isAlphaASCII(name()[0]))
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return;
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os.pendingSpace(true);
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}
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void InsetMathSymbol::infoize2(odocstream & os) const
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{
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os << from_ascii("Symbol: ") << name();
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}
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void InsetMathSymbol::validate(LaTeXFeatures & features) const
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{
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// this is not really the ideal place to do this, but we can't
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// validate in InsetMathExInt.
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if (features.runparams().math_flavor == OutputParams::MathAsHTML
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&& sym_->name == from_ascii("int")) {
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features.addCSSSnippet(
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"span.limits{display: inline-block; vertical-align: middle; text-align:center; font-size: 75%;}\n"
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"span.limits span{display: block;}\n"
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"span.intsym{font-size: 150%;}\n"
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"sub.limit{font-size: 75%;}\n"
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"sup.limit{font-size: 75%;}");
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} else {
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if (!sym_->requires.empty())
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features.require(to_utf8(sym_->requires));
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}
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}
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} // namespace lyx
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