src/mathed/InsetMathBig.cpp

   1 /**
   2  * \file InsetMathBig.cpp
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author André Pönitz
   7  *
   8  * Full author contact details are available in file CREDITS.
   9  */
  10
  11 #include <config.h>
  12
  13 #include "InsetMathBig.h"
  14
  15 #include "LaTeXFeatures.h"
  16 #include "MathSupport.h"
  17 #include "MathStream.h"
  18 #include "MetricsInfo.h"
  19
  20 #include "frontends/FontMetrics.h"
  21
  22 #include "support/docstream.h"
  23 #include "support/lstrings.h"
  24
  25
  26 namespace lyx {
  27
  28
  29 InsetMathBig::InsetMathBig(docstring const & name, docstring const & delim)
  30         : name_(name), delim_(delim)
  31 {}
  32
  33
  34 docstring InsetMathBig::name() const
  35 {
  36         return name_;
  37 }
  38
  39
  40 Inset * InsetMathBig::clone() const
  41 {
  42         return new InsetMathBig(*this);
  43 }
  44
  45
  46 InsetMathBig::size_type InsetMathBig::size() const
  47 {
  48         // order: big Big bigg Bigg biggg Biggg
  49         //        0   1   2    3    4     5
  50         return name_[0] == 'B' ?
  51                 2 * (name_.size() - 4) + 1:
  52                 2 * (name_.size() - 4);
  53 }
  54
  55
  56 double InsetMathBig::increase() const
  57 {
  58         // The formula used in amsmath.sty is
  59         // 1.2 * (1.0 + size() * 0.5) - 1.0.
  60         // We use a smaller step and a bigger offset because our base size
  61         // is different.
  62         return (size() + 1) * 0.3;
  63 }
  64
  65
  66 void InsetMathBig::metrics(MetricsInfo & mi, Dimension & dim) const
  67 {
  68         double const h = theFontMetrics(mi.base.font).ascent('I');
  69         double const f = increase();
  70         dim.wid = 6;
  71         dim.asc = int(h + f * h);
  72         dim.des = int(f * h);
  73 }
  74
  75
  76 void InsetMathBig::draw(PainterInfo & pi, int x, int y) const
  77 {
  78         Dimension const dim = dimension(*pi.base.bv);
  79         // mathed_draw_deco does not use the leading backslash, so remove it
  80         // (but don't use ltrim if this is the backslash delimiter).
  81         // Replace \| by \Vert (equivalent in LaTeX), since mathed_draw_deco
  82         // would treat it as |.
  83         docstring const delim = (delim_ == "\\|") ?  from_ascii("Vert") :
  84                 (delim_ == "\\\\") ? from_ascii("\\") : support::ltrim(delim_, "\\");
  85         mathed_draw_deco(pi, x + 1, y - dim.ascent(), 4, dim.height(),
  86                          delim);
  87         setPosCache(pi, x, y);
  88 }
  89
  90
  91 void InsetMathBig::write(WriteStream & os) const
  92 {
  93         MathEnsurer ensurer(os);
  94         os << '\\' << name_ << delim_;
  95         if (delim_[0] == '\\')
  96                 os.pendingSpace(true);
  97 }
  98
  99
 100 void InsetMathBig::normalize(NormalStream & os) const
 101 {
 102         os << '[' << name_ << ' ' << delim_ << ']';
 103 }
 104
 105
 106 void InsetMathBig::mathmlize(MathStream & os) const
 107 {
 108         os << "<mo form='prefix' fence='true' stretchy='true' symmetric='true'>";
 109         if (delim_ == "(" || delim_ == ")"
 110                         || delim_ == "[" || delim_ == "]"
 111                         || delim_ == "|" || delim_ == "/")
 112                 os << delim_;
 113         else if (delim_ == "\\{" || delim_ == "\\lbrace")
 114                 os << "{";
 115         else if (delim_ == "\\}" || delim_ == "\\rbrace")
 116                 os << "}";
 117         else if (delim_ == "\\slash")
 118                 os << "/";
 119         else if (delim_ == "\\|" || delim_ == "\\vert")
 120                 os << "|";
 121         else if (delim_ == "\\Vert")
 122                 os << "&par;";
 123         else if (delim_ == "\\\\" || delim_ == "\\backslash")
 124                 os <<" \\";
 125         else if (delim_ == "\\langle")
 126                 os << "&lt;";
 127         else if (delim_ == "\\rangle")
 128                 os << "&gt;";
 129         else if (delim_ == "\\lceil")
 130                 os << "&lceil;";
 131         else if (delim_ == "\\rceil")
 132                 os << "&rceil;";
 133         else if (delim_ == "\\lfloor")
 134                 os << "&lfloor;";
 135         else if (delim_ == "\\rfloor")
 136                 os << "&rfloor;";
 137         else if (delim_ == "\\downarrow")
 138                 os << "&darr;";
 139         else if (delim_ == "\\uparrow")
 140                 os << "&uarr;";
 141         else if (delim_ == "\\Downarrow")
 142                 os << "&dArr;";
 143         else if (delim_ == "\\Uparrow")
 144                 os << "&uArr;";
 145         else if (delim_ == "\\updownarrow")
 146                 os << "&varr;";
 147         else if (delim_ == "\\Updownarrow")
 148                 os << "&vArr;";
 149         os << "</mo>";
 150 }
 151
 152
 153 void InsetMathBig::htmlize(HtmlStream & os) const
 154 {
 155         std::string name;
 156         switch (size()) {
 157         case 0: case 1: name = "big"; break;
 158         case 2: case 3: name = "bigg"; break;
 159         case 4: case 5: name = "biggg"; break;
 160         default: name  = "big"; break;
 161         }
 162         os << MTag("span", "class='" + name + "symbol'");
 163         if (delim_ == "(" || delim_ == ")"
 164                         || delim_ == "[" || delim_ == "]"
 165                         || delim_ == "|" || delim_ == "/")
 166                 os << delim_;
 167         else if (delim_ == "\\{" || delim_ == "\\lbrace")
 168                 os << "{";
 169         else if (delim_ == "\\}" || delim_ == "\\rbrace")
 170                 os << "}";
 171         else if (delim_ == "\\slash")
 172                 os << "/";
 173         else if (delim_ == "\\|" || delim_ == "\\vert")
 174                 os << "|";
 175         else if (delim_ == "\\Vert")
 176                 os << "&par;";
 177         else if (delim_ == "\\\\" || delim_ == "\\backslash")
 178                 os <<" \\";
 179         else if (delim_ == "\\langle")
 180                 os << "&lt;";
 181         else if (delim_ == "\\rangle")
 182                 os << "&gt;";
 183         else if (delim_ == "\\lceil")
 184                 os << "&lceil;";
 185         else if (delim_ == "\\rceil")
 186                 os << "&rceil;";
 187         else if (delim_ == "\\lfloor")
 188                 os << "&lfloor;";
 189         else if (delim_ == "\\rfloor")
 190                 os << "&rfloor;";
 191         else if (delim_ == "\\downarrow")
 192                 os << "&darr;";
 193         else if (delim_ == "\\uparrow")
 194                 os << "&uarr;";
 195         else if (delim_ == "\\Downarrow")
 196                 os << "&dArr;";
 197         else if (delim_ == "\\Uparrow")
 198                 os << "&uArr;";
 199         else if (delim_ == "\\updownarrow")
 200                 os << "&varr;";
 201         else if (delim_ == "\\Updownarrow")
 202                 os << "&vArr;";
 203         os << ETag("span");
 204 }
 205
 206
 207 void InsetMathBig::infoize2(odocstream & os) const
 208 {
 209         os << name_;
 210 }
 211
 212
 213 bool InsetMathBig::isBigInsetDelim(docstring const & delim)
 214 {
 215         // mathed_draw_deco must handle these
 216         static char const * const delimiters[] = {
 217                 "(", ")", "\\{", "\\}", "\\lbrace", "\\rbrace", "[", "]",
 218                 "|", "/", "\\slash", "\\|", "\\vert", "\\Vert", "'",
 219                 "\\\\", "\\backslash",
 220                 "\\langle", "\\lceil", "\\lfloor",
 221                 "\\rangle", "\\rceil", "\\rfloor",
 222                 "\\downarrow", "\\Downarrow",
 223                 "\\uparrow", "\\Uparrow",
 224                 "\\updownarrow", "\\Updownarrow", ""
 225         };
 226         return support::findToken(delimiters, to_utf8(delim)) >= 0;
 227 }
 228
 229
 230 void InsetMathBig::validate(LaTeXFeatures & features) const
 231 {
 232         if (features.runparams().math_flavor == OutputParams::MathAsHTML)
 233                 features.addPreambleSnippet("<style type=\"text/css\">\n"
 234                         "span.bigsymbol{font-size: 150%;}\n"
 235                         "span.biggsymbol{font-size: 200%;}\n"
 236                         "span.bigggsymbol{font-size: 225%;}\n"
 237                         "</style>");
 238 }
 239
 240
 241 } // namespace lyx