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
  61 namespace {
  62
  63 // file scope
  64 typedef std::map<string, latexkeys> WordList;
  65 WordList theWordList;
  66
  67
  68 bool math_font_available(string & name)
  69 {
  70         LyXFont f;
  71         augmentFont(f, name);
  72
  73         // Do we have the font proper?
  74         if (lyx_gui::font_available(f))
  75                 return true;
  76
  77         // can we fake it?
  78         if (name == "eufrak") {
  79                 name = "lyxfakefrak";
  80                 return true;
  81         }
  82
  83         lyxerr[Debug::MATHED]
  84                 << "font " << name << " not available and I can't fake it"
  85                 << endl;
  86         return false;
  87 }
  88
  89
  90 void initSymbols()
  91 {
  92         string const filename = LibFileSearch(string(), "symbols");
  93         lyxerr[Debug::MATHED] << "read symbols from " << filename << endl;
  94         if (filename.empty()) {
  95                 lyxerr << "Could not find symbols file" << endl;
  96                 return;
  97         }
  98
  99         std::ifstream fs(filename.c_str());
 100         string line;
 101         bool skip = false;
 102         while (getline(fs, line)) {
 103                 int charid     = 0;
 104                 int fallbackid = 0;
 105                 if (!line.empty() && line[0] == '#')
 106                         continue;
 107
 108                 // special case of iffont/else/endif
 109                 if (line.size() >= 7 && line.substr(0, 6) == "iffont") {
 110                         istringstream is(STRCONV(line));
 111                         string tmp;
 112                         is >> tmp;
 113                         is >> tmp;
 114                         skip = !math_font_available(tmp);
 115                         continue;
 116                 } else if (line.size() >= 4 && line.substr(0, 4) == "else") {
 117                         skip = !skip;
 118                 } else if (line.size() >= 5 && line.substr(0, 5) == "endif") {
 119                         skip = false;
 120                         continue;
 121                 } else if (skip)
 122                         continue;
 123
 124                 // special case of pre-defined macros
 125                 if (line.size() > 8 && line.substr(0, 5) == "\\def\\") {
 126                         //lyxerr << "defining: '" << line << '\'' << endl;
 127                         istringstream is(STRCONV(line));
 128                         MathMacroTable::create(MathAtom(new MathMacroTemplate(is)));
 129                         continue;
 130                 }
 131
 132                 istringstream is(STRCONV(line));
 133                 latexkeys tmp;
 134                 is >> tmp.name >> tmp.inset;
 135                 if (isFontName(tmp.inset))
 136                         is >> charid >> fallbackid >> tmp.extra >> tmp.xmlname;
 137                 else
 138                         is >> tmp.extra;
 139                 if (!is) {
 140                         lyxerr[Debug::MATHED] << "skipping line '" << line << '\'' << endl;
 141                         lyxerr[Debug::MATHED]
 142                                 << tmp.name << ' ' << tmp.inset << ' ' << tmp.extra << endl;
 143                         continue;
 144                 }
 145
 146                 if (isFontName(tmp.inset)) {
 147                         // tmp.inset _is_ the fontname here.
 148                         // create fallbacks if necessary
 149
 150                         // symbol font is not available sometimes
 151                         string symbol_font = "lyxsymbol";
 152
 153                         if (tmp.extra == "func" || tmp.extra == "funclim" || tmp.extra == "special") {
 154                                 lyxerr[Debug::MATHED] << "symbol abuse for " << tmp.name << endl;
 155                                 tmp.draw = tmp.name;
 156                         } else if (math_font_available(tmp.inset)) {
 157                                 lyxerr[Debug::MATHED] << "symbol available for " << tmp.name << endl;
 158                                 tmp.draw += char(charid);
 159                         } else if (fallbackid && math_font_available(symbol_font)) {
 160                                 if (tmp.inset == "cmex")
 161                                         tmp.inset  = "lyxsymbol";
 162                                 else
 163                                         tmp.inset  = "lyxboldsymbol";
 164                                 lyxerr[Debug::MATHED] << "symbol fallback for " << tmp.name << endl;
 165                                 tmp.draw += char(fallbackid);
 166                         } else {
 167                                 lyxerr[Debug::MATHED] << "faking " << tmp.name << endl;
 168                                 tmp.draw = tmp.name;
 169                                 tmp.inset = "lyxtex";
 170                         }
 171                 } else {
 172                         // it's a proper inset
 173                         lyxerr[Debug::MATHED] << "inset " << tmp.inset
 174                                               << " used for " << tmp.name
 175                                               << endl;
 176                 }
 177
 178                 if (theWordList.find(tmp.name) != theWordList.end())
 179                         lyxerr[Debug::MATHED]
 180                                 << "readSymbols: inset " << tmp.name
 181                                 << " already exists." << endl;
 182                 else
 183                         theWordList[tmp.name] = tmp;
 184
 185                 lyxerr[Debug::MATHED]
 186                         << "read symbol '" << tmp.name
 187                         << "  inset: " << tmp.inset
 188                         << "  draw: " << int(tmp.draw.empty() ? 0 : tmp.draw[0])
 189                         << "  extra: " << tmp.extra
 190                         << '\'' << endl;
 191         }
 192         string tmp = "cmm";
 193         string tmp2 = "cmsy";
 194         has_math_fonts = math_font_available(tmp) && math_font_available(tmp2);
 195 }
 196
 197
 198 } // namespace anon
 199
 200
 201 void initMath()
 202 {
 203         static bool initialized = false;
 204         if (!initialized) {
 205                 initSymbols();
 206                 initialized = true;
 207         }
 208 }
 209
 210
 211 latexkeys const * in_word_set(string const & str)
 212 {
 213         WordList::iterator it = theWordList.find(str);
 214         //lyxerr << "looking up '" << str << "' found: "
 215         // << (it != theWordList.end()) << endl;
 216         return (it != theWordList.end()) ? &(it->second) : 0;
 217 }
 218
 219
 220 MathAtom createMathInset(string const & s)
 221 {
 222         lyxerr[Debug::MATHED] << "creating inset with name: '"
 223                               << s << '\'' << endl;;
 224         latexkeys const * l = in_word_set(s);
 225         if (l) {
 226                 string const & inset = l->inset;
 227                 lyxerr[Debug::MATHED] << " found inset: '" <<
 228                         inset << '\'' << endl;
 229                 if (inset == "ref")
 230                         return MathAtom(new RefInset(l->name));
 231                 if (inset == "underset")
 232                         return MathAtom(new MathUndersetInset);
 233                 if (inset == "decoration")
 234                         return MathAtom(new MathDecorationInset(l));
 235                 if (inset == "space")
 236                         return MathAtom(new MathSpaceInset(l->name));
 237                 if (inset == "dots")
 238                         return MathAtom(new MathDotsInset(l));
 239                 if (inset == "mbox")
 240                         return MathAtom(new MathBoxInset(l->name));
 241                 if (inset == "parbox")
 242                         return MathAtom(new MathParboxInset);
 243                 if (inset == "fbox")
 244                         return MathAtom(new MathFboxInset(l));
 245                 if (inset == "style")
 246                         return MathAtom(new MathSizeInset(l));
 247                 if (inset == "font")
 248                         return MathAtom(new MathFontInset(l));
 249                 if (inset == "oldfont")
 250                         return MathAtom(new MathFontOldInset(l));
 251                 if (inset == "matrix")
 252                         return MathAtom(new MathAMSArrayInset(s));
 253                 return MathAtom(new MathSymbolInset(l));
 254         }
 255
 256         if (s.size() == 2 && s[0] == '#' && s[1] >= '1' && s[1] <= '9')
 257                 return MathAtom(new MathMacroArgument(s[1] - '0'));
 258         if (s.size() == 3 && s[0] == '\\' && s[1] == '#'
 259                         && s[2] >= '1' && s[2] <= '9')
 260                 return MathAtom(new MathMacroArgument(s[2] - '0'));
 261         if (s == "framebox")
 262                 return MathAtom(new MathFrameboxInset);
 263         if (s == "kern")
 264                 return MathAtom(new MathKernInset);
 265         if (s == "xymatrix")
 266                 return MathAtom(new MathXYMatrixInset);
 267         if (s == "xrightarrow" || s == "xleftarrow")
 268                 return MathAtom(new MathXArrowInset(s));
 269         if (s == "split" || s == "gathered" || s == "aligned")
 270                 return MathAtom(new MathSplitInset(s));
 271         if (s == "cases")
 272                 return MathAtom(new MathCasesInset);
 273         if (s == "substack")
 274                 return MathAtom(new MathSubstackInset);
 275         if (s == "subarray" || s == "array")
 276                 return MathAtom(new MathArrayInset(s, 1, 1));
 277         if (s == "sqrt")
 278                 return MathAtom(new MathSqrtInset);
 279         if (s == "root")
 280                 return MathAtom(new MathRootInset);
 281         if (s == "stackrel")
 282                 return MathAtom(new MathStackrelInset);
 283         if (s == "binom" || s == "choose")
 284                 return MathAtom(new MathBinomInset(s == "choose"));
 285         if (s == "over" || s == "frac")
 286                 return MathAtom(new MathFracInset);
 287         //if (s == "infer")
 288         //      return MathAtom(new MathInferInset);
 289         if (s == "atop")
 290                 return MathAtom(new MathFracInset(true));
 291         if (s == "lefteqn")
 292                 return MathAtom(new MathLefteqnInset);
 293         if (s == "lyxert")
 294                 return MathAtom(new MathErtInset);
 295
 296         if (MathMacroTable::has(s))
 297                 return MathAtom(new MathMacro(s));
 298
 299         //lyxerr[Debug::MATHED] << "creating inset 2 with name: '" << s << '\'' << endl;
 300         return MathAtom(new MathUnknownInset(s));
 301 }