src/mathed/math_factory.C

   1 #ifdef __GNUG__
   2 #pragma implementation
   3 #endif
   4
   5 #include <config.h>
   6
   7 #include "math_parser.h"
   8 #include "math_arrayinset.h"
   9 #include "math_amsarrayinset.h"
  10 #include "math_binominset.h"
  11 #include "math_boxinset.h"
  12 #include "math_casesinset.h"
  13 #include "math_decorationinset.h"
  14 #include "math_dotsinset.h"
  15 #include "math_ertinset.h"
  16 #include "math_fboxinset.h"
  17 #include "math_frameboxinset.h"
  18 #include "math_fontinset.h"
  19 #include "math_fontoldinset.h"
  20 #include "math_fracinset.h"
  21 #include "math_kerninset.h"
  22 #include "math_inferinset.h"
  23 #include "math_lefteqninset.h"
  24 #include "math_macro.h"
  25 #include "math_macrotable.h"
  26 #include "math_macrotemplate.h"
  27 #include "math_macroarg.h"
  28 #include "math_parboxinset.h"
  29 #include "math_rootinset.h"
  30 #include "math_sizeinset.h"
  31 #include "math_spaceinset.h"
  32 #include "math_splitinset.h"
  33 #include "math_sqrtinset.h"
  34 #include "math_stackrelinset.h"
  35 #include "math_substackinset.h"
  36 #include "math_symbolinset.h"
  37 #include "math_undersetinset.h"
  38 #include "math_unknowninset.h"
  39 #include "math_xarrowinset.h"
  40 #include "math_xymatrixinset.h"
  41 #include "math_xyarrowinset.h"
  42
  43 //#include "insets/insetref.h"
  44 #include "ref_inset.h"
  45
  46 #include "math_metricsinfo.h"
  47 #include "debug.h"
  48 #include "math_support.h"
  49 #include "Lsstream.h"
  50 #include "support/filetools.h" // LibFileSearch
  51 #include "frontends/lyx_gui.h"
  52
  53 #include <map>
  54 #include <fstream>
  55
  56 bool has_math_fonts;
  57
  58 using std::endl;
  59
  60 namespace {
  61
  62 // file scope
  63 typedef std::map<string, latexkeys> WordList;
  64 WordList theWordList;
  65
  66
  67 bool math_font_available(string & name)
  68 {
  69         LyXFont f;
  70         augmentFont(f, name);
  71
  72         // Do we have the font proper?
  73         if (lyx_gui::font_available(f))
  74                 return true;
  75
  76         // can we fake it?
  77         if (name == "eufrak") {
  78                 name = "lyxfakefrak";
  79                 return true;
  80         }
  81
  82         lyxerr[Debug::MATHED]
  83                 << "font " << name << " not available and I can't fake it"
  84                 << endl;
  85         return false;
  86 }
  87
  88
  89 void initSymbols()
  90 {
  91         string const filename = LibFileSearch(string(), "symbols");
  92         lyxerr[Debug::MATHED] << "read symbols from " << filename << endl;
  93         if (filename.empty()) {
  94                 lyxerr << "Could not find symbols file" << endl;
  95                 return;
  96         }
  97
  98         std::ifstream fs(filename.c_str());
  99         string line;
 100         bool skip = false;
 101         while (std::getline(fs, line)) {
 102                 int charid     = 0;
 103                 int fallbackid = 0;
 104                 if (line.size() > 0 && line[0] == '#')
 105                         continue;
 106
 107                 // special case of iffont/else/endif
 108                 if (line.size() >= 7 && line.substr(0, 6) == "iffont") {
 109                         istringstream is(line);
 110                         string tmp;
 111                         is >> tmp;
 112                         is >> tmp;
 113                         skip = !math_font_available(tmp);
 114                         continue;
 115                 } else if (line.size() >= 4 && line.substr(0, 4) == "else") {
 116                         skip = !skip;
 117                 } else if (line.size() >= 5 && line.substr(0, 5) == "endif") {
 118                         skip = false;
 119                         continue;
 120                 } else if (skip)
 121                         continue;
 122
 123                 // special case of pre-defined macros
 124                 if (line.size() > 8 && line.substr(0, 5) == "\\def\\") {
 125                         //lyxerr << "defining: '" << line << "'\n";
 126                         istringstream is(line);
 127                         MathMacroTable::create(MathAtom(new MathMacroTemplate(is)));
 128                         continue;
 129                 }
 130
 131                 istringstream is(line);
 132                 latexkeys tmp;
 133                 is >> tmp.name >> tmp.inset;
 134                 if (isFontName(tmp.inset))
 135                         is >> charid >> fallbackid >> tmp.extra >> tmp.xmlname;
 136                 else
 137                         is >> tmp.extra;
 138                 if (!is) {
 139                         lyxerr[Debug::MATHED] << "skipping line '" << line << "'" << endl;
 140                         lyxerr[Debug::MATHED]
 141                                 << tmp.name << ' ' << tmp.inset << ' ' << tmp.extra << endl;
 142                         continue;
 143                 }
 144
 145                 if (isFontName(tmp.inset)) {
 146                         // tmp.inset _is_ the fontname here.
 147                         // create fallbacks if necessary
 148                         if (tmp.extra=="func" || tmp.extra=="funclim" || tmp.extra=="special") {
 149                                 lyxerr[Debug::MATHED] << "symbol abuse for " << tmp.name << endl;
 150                                 tmp.draw = tmp.name;
 151                         } else if (math_font_available(tmp.inset)) {
 152                                 lyxerr[Debug::MATHED] << "symbol available for " << tmp.name << endl;
 153                                 tmp.draw += char(charid);
 154                         } else if (fallbackid) {
 155                                 if (tmp.inset == "cmex")
 156                                         tmp.inset  = "lyxsymbol";
 157                                 else
 158                                         tmp.inset  = "lyxboldsymbol";
 159                                 lyxerr[Debug::MATHED] << "symbol fallback for " << tmp.name << endl;
 160                                 tmp.draw += char(fallbackid);
 161                         } else {
 162                                 lyxerr[Debug::MATHED] << "faking " << tmp.name << endl;
 163                                 tmp.draw = tmp.name;
 164                                 tmp.inset = "lyxtex";
 165                         }
 166                 } else {
 167                         // it's a proper inset
 168                         lyxerr[Debug::MATHED] << "inset " << tmp.inset << " used for "
 169                                 << tmp.name << endl;
 170                 }
 171
 172                 if (theWordList.find(tmp.name) != theWordList.end())
 173                         lyxerr[Debug::MATHED] << "readSymbols: inset " << tmp.name
 174                                               << " already exists." << endl;
 175                 else
 176                         theWordList[tmp.name] = tmp;
 177                 lyxerr[Debug::MATHED] << "read symbol '" << tmp.name
 178                                         <<  "  inset: " << tmp.inset
 179                                         <<  "  draw: " << int(tmp.draw[0])
 180                                         <<  "  extra: " << tmp.extra
 181                                       << "'" << endl;
 182         }
 183         string tmp = "cmm";
 184         string tmp2 = "cmsy";
 185         has_math_fonts = math_font_available(tmp) && math_font_available(tmp2);
 186 }
 187
 188
 189 } // namespace anon
 190
 191
 192 void initMath()
 193 {
 194         static bool initialized = false;
 195         if (!initialized) {
 196                 initSymbols();
 197                 initialized = true;
 198         }
 199 }
 200
 201
 202 latexkeys const * in_word_set(string const & str)
 203 {
 204         WordList::iterator it = theWordList.find(str);
 205         //lyxerr << "looking up '" << str << "' found: "
 206         // << (it != theWordList.end()) << "\n";
 207         return (it != theWordList.end()) ? &(it->second) : 0;
 208 }
 209
 210
 211 MathAtom createMathInset(string const & s)
 212 {
 213         lyxerr[Debug::MATHED] << "creating inset with name: '" << s << "'" << endl;
 214         latexkeys const * l = in_word_set(s);
 215         if (l) {
 216                 string const & inset = l->inset;
 217                 lyxerr[Debug::MATHED] << " found inset: '" << inset << "'" << endl;
 218                 if (inset == "ref")
 219                         return MathAtom(new RefInset(l->name));
 220                 if (inset == "underset")
 221                         return MathAtom(new MathUndersetInset);
 222                 if (inset == "decoration")
 223                         return MathAtom(new MathDecorationInset(l));
 224                 if (inset == "space")
 225                         return MathAtom(new MathSpaceInset(l->name));
 226                 if (inset == "dots")
 227                         return MathAtom(new MathDotsInset(l));
 228                 if (inset == "mbox")
 229                         return MathAtom(new MathBoxInset(l->name));
 230                 if (inset == "parbox")
 231                         return MathAtom(new MathParboxInset);
 232                 if (inset == "fbox")
 233                         return MathAtom(new MathFboxInset(l));
 234                 if (inset == "style")
 235                         return MathAtom(new MathSizeInset(l));
 236                 if (inset == "font")
 237                         return MathAtom(new MathFontInset(l));
 238                 if (inset == "oldfont")
 239                         return MathAtom(new MathFontOldInset(l));
 240                 if (inset == "matrix")
 241                         return MathAtom(new MathAMSArrayInset(s));
 242                 return MathAtom(new MathSymbolInset(l));
 243         }
 244
 245         if (s.size() == 2 && s[0] == '#' && s[1] >= '1' && s[1] <= '9')
 246                 return MathAtom(new MathMacroArgument(s[1] - '0'));
 247         if (s.size() == 3 && s[0] == '\\' && s[1] == '#'
 248                         && s[2] >= '1' && s[2] <= '9')
 249                 return MathAtom(new MathMacroArgument(s[2] - '0'));
 250         if (s == "framebox")
 251                 return MathAtom(new MathFrameboxInset);
 252         if (s == "kern")
 253                 return MathAtom(new MathKernInset);
 254         if (s == "xymatrix")
 255                 return MathAtom(new MathXYMatrixInset);
 256         if (s == "xrightarrow" || s == "xleftarrow")
 257                 return MathAtom(new MathXArrowInset(s));
 258         if (s == "split" || s == "gathered" || s == "aligned")
 259                 return MathAtom(new MathSplitInset(s));
 260         if (s == "cases")
 261                 return MathAtom(new MathCasesInset);
 262         if (s == "substack")
 263                 return MathAtom(new MathSubstackInset);
 264         if (s == "subarray" || s == "array")
 265                 return MathAtom(new MathArrayInset(s, 1, 1));
 266         if (s == "sqrt")
 267                 return MathAtom(new MathSqrtInset);
 268         if (s == "root")
 269                 return MathAtom(new MathRootInset);
 270         if (s == "stackrel")
 271                 return MathAtom(new MathStackrelInset);
 272         if (s == "binom" || s == "choose")
 273                 return MathAtom(new MathBinomInset(s == "choose"));
 274         if (s == "over" || s == "frac")
 275                 return MathAtom(new MathFracInset);
 276         //if (s == "infer")
 277         //      return MathAtom(new MathInferInset);
 278         if (s == "atop")
 279                 return MathAtom(new MathFracInset(true));
 280         if (s == "lefteqn")
 281                 return MathAtom(new MathLefteqnInset);
 282         if (s == "lyxert")
 283                 return MathAtom(new MathErtInset);
 284
 285         if (MathMacroTable::has(s))
 286                 return MathAtom(new MathMacro(s));
 287
 288         //lyxerr[Debug::MATHED] << "creating inset 2 with name: '" << s << "'" << endl;
 289         return MathAtom(new MathUnknownInset(s));
 290 }