src/mathed/math_factory.C

   1
   2 #ifdef __GNUG__
   3 #pragma implementation
   4 #endif
   5
   6 #include <config.h>
   7
   8 #include "math_parser.h"
   9 #include "math_arrayinset.h"
  10 #include "math_amsarrayinset.h"
  11 #include "math_binominset.h"
  12 #include "math_boxinset.h"
  13 #include "math_casesinset.h"
  14 #include "math_decorationinset.h"
  15 #include "math_dotsinset.h"
  16 #include "math_ertinset.h"
  17 #include "math_fboxinset.h"
  18 #include "math_frameboxinset.h"
  19 #include "math_fontinset.h"
  20 #include "math_fontoldinset.h"
  21 #include "math_fracinset.h"
  22 #include "math_kerninset.h"
  23 #include "math_inferinset.h"
  24 #include "math_lefteqninset.h"
  25 #include "math_macro.h"
  26 #include "math_macrotable.h"
  27 #include "math_macrotemplate.h"
  28 #include "math_macroarg.h"
  29 #include "math_parboxinset.h"
  30 #include "math_rootinset.h"
  31 #include "math_sizeinset.h"
  32 #include "math_spaceinset.h"
  33 #include "math_splitinset.h"
  34 #include "math_sqrtinset.h"
  35 #include "math_stackrelinset.h"
  36 #include "math_substackinset.h"
  37 #include "math_symbolinset.h"
  38 #include "math_undersetinset.h"
  39 #include "math_unknowninset.h"
  40 #include "math_xarrowinset.h"
  41 #include "math_xymatrixinset.h"
  42 #include "math_xyarrowinset.h"
  43
  44 //#include "insets/insetref.h"
  45 #include "ref_inset.h"
  46
  47 #include "math_metricsinfo.h"
  48 #include "debug.h"
  49 #include "math_support.h"
  50 #include "Lsstream.h"
  51 #include "support/filetools.h" // LibFileSearch
  52 #include "frontends/lyx_gui.h"
  53
  54 #include <map>
  55 #include <fstream>
  56
  57 bool has_math_fonts;
  58
  59 namespace {
  60
  61 // file scope
  62 typedef std::map<string, latexkeys> WordList;
  63 WordList theWordList;
  64
  65
  66 bool math_font_available(string & name)
  67 {
  68         LyXFont f;
  69         augmentFont(f, name);
  70
  71         // Do we have the font proper?
  72         if (lyx_gui::font_available(f))
  73                 return true;
  74
  75         // can we fake it?
  76         if (name == "eufrak") {
  77                 name = "lyxfakefrak";
  78                 return true;
  79         }
  80
  81         lyxerr[Debug::MATHED]
  82                 << "font " << name << " not available and I can't fake it\n";
  83         return false;
  84 }
  85
  86
  87 void initSymbols()
  88 {
  89         string const filename = LibFileSearch(string(), "symbols");
  90         lyxerr[Debug::MATHED] << "read symbols from " << filename << "\n";
  91         if (filename.empty()) {
  92                 lyxerr << "Could not find symbols file\n";
  93                 return;
  94         }
  95
  96         std::ifstream fs(filename.c_str());
  97         string line;
  98         bool skip = false;
  99         while (std::getline(fs, line)) {
 100                 int charid     = 0;
 101                 int fallbackid = 0;
 102                 if (line.size() > 0 && line[0] == '#')
 103                         continue;
 104
 105                 // special case of iffont/else/endif
 106                 if (line.size() >= 7 && line.substr(0, 6) == "iffont") {
 107                         istringstream is(line);
 108                         string tmp;
 109                         is >> tmp;
 110                         is >> tmp;
 111                         skip = !math_font_available(tmp);
 112                         continue;
 113                 } else if (line.size() >= 4 && line.substr(0, 4) == "else") {
 114                         skip = !skip;
 115                 } else if (line.size() >= 5 && line.substr(0, 5) == "endif") {
 116                         skip = false;
 117                         continue;
 118                 } else if (skip)
 119                         continue;
 120
 121                 // special case of pre-defined macros
 122                 if (line.size() > 8 && line.substr(0, 5) == "\\def\\") {
 123                         //lyxerr << "defining: '" << line << "'\n";
 124                         istringstream is(line);
 125                         MathMacroTable::create(MathAtom(new MathMacroTemplate(is)));
 126                         continue;
 127                 }
 128
 129                 istringstream is(line);
 130                 latexkeys tmp;
 131                 is >> tmp.name >> tmp.inset;
 132                 if (isFontName(tmp.inset))
 133                         is >> charid >> fallbackid >> tmp.extra >> tmp.xmlname;
 134                 else
 135                         is >> tmp.extra;
 136                 if (!is) {
 137                         lyxerr[Debug::MATHED] << "skipping line '" << line << "'\n";
 138                         lyxerr[Debug::MATHED]
 139                                 << tmp.name << ' ' << tmp.inset << ' ' << tmp.extra << "\n";
 140                         continue;
 141                 }
 142
 143                 if (isFontName(tmp.inset)) {
 144                         // tmp.inset _is_ the fontname here.
 145                         // create fallbacks if necessary
 146                         if (tmp.extra=="func" || tmp.extra=="funclim" || tmp.extra=="special") {
 147                                 lyxerr[Debug::MATHED] << "symbol abuse for " << tmp.name << "\n";
 148                                 tmp.draw = tmp.name;
 149                         } else if (math_font_available(tmp.inset)) {
 150                                 lyxerr[Debug::MATHED] << "symbol available for " << tmp.name << "\n";
 151                                 tmp.draw += char(charid);
 152                         } else if (fallbackid) {
 153                                 if (tmp.inset == "cmex")
 154                                         tmp.inset  = "lyxsymbol";
 155                                 else
 156                                         tmp.inset  = "lyxboldsymbol";
 157                                 lyxerr[Debug::MATHED] << "symbol fallback for " << tmp.name << "\n";
 158                                 tmp.draw += char(fallbackid);
 159                         } else {
 160                                 lyxerr[Debug::MATHED] << "faking " << tmp.name << "\n";
 161                                 tmp.draw = tmp.name;
 162                                 tmp.inset = "lyxtex";
 163                         }
 164                 } else {
 165                         // it's a proper inset
 166                         lyxerr[Debug::MATHED] << "inset " << tmp.inset << " used for "
 167                                 << tmp.name << "\n";
 168                 }
 169
 170                 if (theWordList.find(tmp.name) != theWordList.end())
 171                         lyxerr[Debug::MATHED] << "readSymbols: inset " << tmp.name
 172                                 << " already exists.\n";
 173                 else
 174                         theWordList[tmp.name] = tmp;
 175                 lyxerr[Debug::MATHED] << "read symbol '" << tmp.name
 176                                         <<  "  inset: " << tmp.inset
 177                                         <<  "  draw: " << int(tmp.draw[0])
 178                                         <<  "  extra: " << tmp.extra
 179                                         << "'\n";
 180         }
 181         string tmp = "cmm";
 182         string tmp2 = "cmsy";
 183         has_math_fonts = math_font_available(tmp) && math_font_available(tmp2);
 184 }
 185
 186
 187 } // namespace anon
 188
 189
 190 void initMath()
 191 {
 192         static bool initialized = false;
 193         if (!initialized) {
 194                 initSymbols();
 195                 initialized = true;
 196         }
 197 }
 198
 199
 200 latexkeys const * in_word_set(string const & str)
 201 {
 202         WordList::iterator it = theWordList.find(str);
 203         //lyxerr << "looking up '" << str << "' found: "
 204         // << (it != theWordList.end()) << "\n";
 205         return (it != theWordList.end()) ? &(it->second) : 0;
 206 }
 207
 208
 209 MathAtom createMathInset(string const & s)
 210 {
 211         lyxerr[Debug::MATHED] << "creating inset with name: '" << s << "'\n";
 212         latexkeys const * l = in_word_set(s);
 213         if (l) {
 214                 string const & inset = l->inset;
 215                 lyxerr[Debug::MATHED] << " found inset: '" << inset << "'\n";
 216                 if (inset == "ref")
 217                         return MathAtom(new RefInset(l->name));
 218                 if (inset == "underset")
 219                         return MathAtom(new MathUndersetInset);
 220                 if (inset == "decoration")
 221                         return MathAtom(new MathDecorationInset(l));
 222                 if (inset == "space")
 223                         return MathAtom(new MathSpaceInset(l->name));
 224                 if (inset == "dots")
 225                         return MathAtom(new MathDotsInset(l));
 226                 if (inset == "mbox")
 227                         return MathAtom(new MathBoxInset(l->name));
 228                 if (inset == "parbox")
 229                         return MathAtom(new MathParboxInset);
 230                 if (inset == "fbox")
 231                         return MathAtom(new MathFboxInset(l));
 232                 if (inset == "style")
 233                         return MathAtom(new MathSizeInset(l));
 234                 if (inset == "font")
 235                         return MathAtom(new MathFontInset(l));
 236                 if (inset == "oldfont")
 237                         return MathAtom(new MathFontOldInset(l));
 238                 if (inset == "matrix")
 239                         return MathAtom(new MathAMSArrayInset(s));
 240                 return MathAtom(new MathSymbolInset(l));
 241         }
 242
 243         if (s.size() == 2 && s[0] == '#' && s[1] >= '1' && s[1] <= '9')
 244                 return MathAtom(new MathMacroArgument(s[1] - '0'));
 245         if (s.size() == 3 && s[0] == '\\' && s[1] == '#'
 246                         && s[2] >= '1' && s[2] <= '9')
 247                 return MathAtom(new MathMacroArgument(s[2] - '0'));
 248         if (s == "framebox")
 249                 return MathAtom(new MathFrameboxInset);
 250         if (s == "kern")
 251                 return MathAtom(new MathKernInset);
 252         if (s == "xymatrix")
 253                 return MathAtom(new MathXYMatrixInset);
 254         if (s == "xrightarrow" || s == "xleftarrow")
 255                 return MathAtom(new MathXArrowInset(s));
 256         if (s == "split" || s == "gathered" || s == "aligned")
 257                 return MathAtom(new MathSplitInset(s));
 258         if (s == "cases")
 259                 return MathAtom(new MathCasesInset);
 260         if (s == "substack")
 261                 return MathAtom(new MathSubstackInset);
 262         if (s == "subarray" || s == "array")
 263                 return MathAtom(new MathArrayInset(s, 1, 1));
 264         if (s == "sqrt")
 265                 return MathAtom(new MathSqrtInset);
 266         if (s == "root")
 267                 return MathAtom(new MathRootInset);
 268         if (s == "stackrel")
 269                 return MathAtom(new MathStackrelInset);
 270         if (s == "binom" || s == "choose")
 271                 return MathAtom(new MathBinomInset(s == "choose"));
 272         if (s == "over" || s == "frac")
 273                 return MathAtom(new MathFracInset);
 274         //if (s == "infer")
 275         //      return MathAtom(new MathInferInset);
 276         if (s == "atop")
 277                 return MathAtom(new MathFracInset(true));
 278         if (s == "lefteqn")
 279                 return MathAtom(new MathLefteqnInset);
 280         if (s == "lyxert")
 281                 return MathAtom(new MathErtInset);
 282
 283         if (MathMacroTable::has(s))
 284                 return MathAtom(new MathMacro(s));
 285
 286         //lyxerr[Debug::MATHED] << "creating inset 2 with name: '" << s << "'\n";
 287         return MathAtom(new MathUnknownInset(s));
 288 }