2 * \file InsetMathSymbol.cpp
3 * This file is part of LyX, the document processor.
4 * Licence details can be found in the file COPYING.
8 * Full author contact details are available in file CREDITS.
13 #include "InsetMathSymbol.h"
15 #include "Dimension.h"
16 #include "LaTeXFeatures.h"
18 #include "MathParser.h"
19 #include "MathStream.h"
20 #include "MathSupport.h"
22 #include "support/debug.h"
23 #include "support/docstream.h"
24 #include "support/textutils.h"
26 #include <boost/scoped_ptr.hpp>
31 InsetMathSymbol::InsetMathSymbol(latexkeys const * l)
32 : sym_(l), h_(0), kerning_(0), scriptable_(false)
36 InsetMathSymbol::InsetMathSymbol(char const * name)
37 : sym_(in_word_set(from_ascii(name))), h_(0),
38 kerning_(0), scriptable_(false)
42 InsetMathSymbol::InsetMathSymbol(docstring const & name)
43 : sym_(in_word_set(name)), h_(0), kerning_(0), scriptable_(false)
47 Inset * InsetMathSymbol::clone() const
49 return new InsetMathSymbol(*this);
53 docstring InsetMathSymbol::name() const
59 void InsetMathSymbol::metrics(MetricsInfo & mi, Dimension & dim) const
61 //lyxerr << "metrics: symbol: '" << sym_->name
62 // << "' in font: '" << sym_->inset
63 // << "' drawn as: '" << sym_->draw
66 bool const italic_upcase_greek = sym_->inset == "cmr" &&
67 sym_->extra == "mathalpha" &&
68 mi.base.fontname == "mathit";
69 std::string const font = italic_upcase_greek ? "cmm" : sym_->inset;
70 int const em = mathed_font_em(mi.base.font);
71 FontSetChanger dummy(mi.base, from_ascii(font));
72 mathed_string_dim(mi.base.font, sym_->draw, dim);
73 docstring::const_reverse_iterator rit = sym_->draw.rbegin();
74 kerning_ = mathed_char_kerning(mi.base.font, *rit);
75 // correct height for broken cmex and wasy font
76 if (sym_->inset == "cmex" || sym_->inset == "wasy") {
81 // seperate things a bit
83 dim.wid += static_cast<int>(0.5 * em + 0.5);
85 dim.wid += static_cast<int>(0.1667 * em + 0.5);
88 if (mi.base.style == LM_ST_DISPLAY)
89 if (sym_->inset == "cmex" || sym_->inset == "esint" ||
90 sym_->extra == "funclim" ||
91 (sym_->inset == "stmry" && sym_->extra == "mathop"))
96 void InsetMathSymbol::draw(PainterInfo & pi, int x, int y) const
98 //lyxerr << "metrics: symbol: '" << sym_->name
99 // << "' in font: '" << sym_->inset
100 // << "' drawn as: '" << sym_->draw
103 bool const italic_upcase_greek = sym_->inset == "cmr" &&
104 sym_->extra == "mathalpha" &&
105 pi.base.fontname == "mathit";
106 std::string const font = italic_upcase_greek ? "cmm" : sym_->inset;
107 int const em = mathed_font_em(pi.base.font);
109 x += static_cast<int>(0.25*em+0.5);
111 x += static_cast<int>(0.0833*em+0.5);
113 FontSetChanger dummy(pi.base, from_ascii(font));
114 pi.draw(x, y - h_, sym_->draw);
118 InsetMath::mode_type InsetMathSymbol::currentMode() const
120 return sym_->extra == "textmode" ? TEXT_MODE : MATH_MODE;
124 bool InsetMathSymbol::isRelOp() const
126 return sym_->extra == "mathrel";
130 bool InsetMathSymbol::isOrdAlpha() const
132 return sym_->extra == "mathord" || sym_->extra == "mathalpha";
136 bool InsetMathSymbol::isScriptable() const
142 bool InsetMathSymbol::takesLimits() const
145 sym_->inset == "cmex" ||
146 sym_->inset == "lyxboldsymb" ||
147 sym_->inset == "esint" ||
148 sym_->extra == "funclim" ||
149 (sym_->inset == "stmry" && sym_->extra == "mathop");
153 void InsetMathSymbol::normalize(NormalStream & os) const
155 os << "[symbol " << name() << ']';
159 void InsetMathSymbol::maple(MapleStream & os) const
161 if (name() == "cdot")
163 else if (name() == "infty")
169 void InsetMathSymbol::maxima(MaximaStream & os) const
171 if (name() == "cdot")
173 else if (name() == "infty")
175 else if (name() == "pi")
182 void InsetMathSymbol::mathematica(MathematicaStream & os) const
184 if ( name() == "pi") { os << "Pi"; return;}
185 if ( name() == "infty") { os << "Infinity"; return;}
186 if ( name() == "cdot") { os << '*'; return;}
191 void InsetMathSymbol::mathmlize(MathStream & os) const
193 // FIXME We may need to do more interesting things
195 char const * type = sym_->MathMLtype();
196 os << '<' << type << "> ";
197 if (sym_->xmlname == "x")
202 os << " </" << type << '>';
206 void InsetMathSymbol::htmlize(HtmlStream & os, bool spacing) const
208 // FIXME We may need to do more interesting things
210 char const * type = sym_->MathMLtype();
211 bool op = (std::string(type) == "mo");
213 if (sym_->xmlname == "x")
215 os << ' ' << name() << ' ';
216 else if (op && spacing)
217 os << ' ' << sym_->xmlname << ' ';
223 void InsetMathSymbol::htmlize(HtmlStream & os) const
229 void InsetMathSymbol::octave(OctaveStream & os) const
231 if (name() == "cdot")
238 void InsetMathSymbol::write(WriteStream & os) const
240 boost::scoped_ptr<MathEnsurer> ensurer;
241 if (currentMode() != TEXT_MODE)
242 ensurer.reset(new MathEnsurer(os));
243 os << '\\' << name();
245 // $,#, etc. In theory the restriction based on catcodes, but then
246 // we do not handle catcodes very well, let alone cat code changes,
247 // so being outside the alpha range is good enough.
248 if (name().size() == 1 && !isAlphaASCII(name()[0]))
251 os.pendingSpace(true);
255 void InsetMathSymbol::infoize2(odocstream & os) const
257 os << from_ascii("Symbol: ") << name();
261 void InsetMathSymbol::validate(LaTeXFeatures & features) const
263 // this is not really the ideal place to do this, but we can't
264 // validate in InsetMathExInt.
265 if (features.runparams().math_flavor == OutputParams::MathAsHTML
266 && sym_->name == from_ascii("int")) {
267 features.addCSSSnippet(
268 "span.limits{display: inline-block; vertical-align: middle; text-align:center; font-size: 75%;}\n"
269 "span.limits span{display: block;}\n"
270 "span.intsym{font-size: 150%;}\n"
271 "sub.limit{font-size: 75%;}\n"
272 "sup.limit{font-size: 75%;}");
274 if (!sym_->requires.empty())
275 features.require(sym_->requires);