src/mathed/math_factory.C

   1
   2 #include <config.h>
   3
   4 #include "math_parser.h"
   5 #include "math_arrayinset.h"
   6 #include "math_amsarrayinset.h"
   7 #include "math_binominset.h"
   8 #include "math_boxinset.h"
   9 #include "math_casesinset.h"
  10 #include "math_decorationinset.h"
  11 #include "math_dotsinset.h"
  12 #include "math_ertinset.h"
  13 #include "math_fboxinset.h"
  14 #include "math_frameboxinset.h"
  15 #include "math_fontinset.h"
  16 #include "math_fontoldinset.h"
  17 #include "math_fracinset.h"
  18 #include "math_kerninset.h"
  19 #include "math_inferinset.h"
  20 #include "math_lefteqninset.h"
  21 #include "math_macro.h"
  22 #include "math_macrotable.h"
  23 #include "math_macrotemplate.h"
  24 #include "math_macroarg.h"
  25 #include "math_parboxinset.h"
  26 #include "math_rootinset.h"
  27 #include "math_sizeinset.h"
  28 #include "math_spaceinset.h"
  29 #include "math_splitinset.h"
  30 #include "math_sqrtinset.h"
  31 #include "math_stackrelinset.h"
  32 #include "math_substackinset.h"
  33 #include "math_symbolinset.h"
  34 #include "math_undersetinset.h"
  35 #include "math_unknowninset.h"
  36 #include "math_xarrowinset.h"
  37 #include "math_xymatrixinset.h"
  38 #include "math_xyarrowinset.h"
  39
  40 //#include "insets/insetref.h"
  41 #include "ref_inset.h"
  42
  43 #include "math_metricsinfo.h"
  44 #include "debug.h"
  45 #include "math_support.h"
  46 #include "Lsstream.h"
  47 #include "support/filetools.h" // LibFileSearch
  48 #include "frontends/lyx_gui.h"
  49
  50 #include <map>
  51 #include <fstream>
  52
  53 bool has_math_fonts;
  54
  55 using std::endl;
  56
  57
  58 namespace {
  59
  60 // file scope
  61 typedef std::map<string, latexkeys> WordList;
  62 WordList theWordList;
  63
  64
  65 bool math_font_available(string & name)
  66 {
  67         LyXFont f;
  68         augmentFont(f, name);
  69
  70         // Do we have the font proper?
  71         if (lyx_gui::font_available(f))
  72                 return true;
  73
  74         // can we fake it?
  75         if (name == "eufrak") {
  76                 name = "lyxfakefrak";
  77                 return true;
  78         }
  79
  80         lyxerr[Debug::MATHED]
  81                 << "font " << name << " not available and I can't fake it"
  82                 << endl;
  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 << endl;
  91         if (filename.empty()) {
  92                 lyxerr << "Could not find symbols file" << endl;
  93                 return;
  94         }
  95
  96         std::ifstream fs(filename.c_str());
  97         string line;
  98         bool skip = false;
  99         while (getline(fs, line)) {
 100                 int charid     = 0;
 101                 int fallbackid = 0;
 102                 if (!line.empty() && 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(STRCONV(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 << '\'' << endl;
 124                         istringstream is(STRCONV(line));
 125                         MathMacroTable::create(MathAtom(new MathMacroTemplate(is)));
 126                         continue;
 127                 }
 128
 129                 istringstream is(STRCONV(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 << '\'' << endl;
 138                         lyxerr[Debug::MATHED]
 139                                 << tmp.name << ' ' << tmp.inset << ' ' << tmp.extra << endl;
 140                         continue;
 141                 }
 142
 143                 if (isFontName(tmp.inset)) {
 144                         // tmp.inset _is_ the fontname here.
 145                         // create fallbacks if necessary
 146
 147                         // symbol font is not available sometimes
 148                         string symbol_font = "lyxsymbol";
 149
 150                         if (tmp.extra == "func" || tmp.extra == "funclim" || tmp.extra == "special") {
 151                                 lyxerr[Debug::MATHED] << "symbol abuse for " << tmp.name << endl;
 152                                 tmp.draw = tmp.name;
 153                         } else if (math_font_available(tmp.inset)) {
 154                                 lyxerr[Debug::MATHED] << "symbol available for " << tmp.name << endl;
 155                                 tmp.draw += char(charid);
 156                         } else if (fallbackid && math_font_available(symbol_font)) {
 157                                 if (tmp.inset == "cmex")
 158                                         tmp.inset  = "lyxsymbol";
 159                                 else
 160                                         tmp.inset  = "lyxboldsymbol";
 161                                 lyxerr[Debug::MATHED] << "symbol fallback for " << tmp.name << endl;
 162                                 tmp.draw += char(fallbackid);
 163                         } else {
 164                                 lyxerr[Debug::MATHED] << "faking " << tmp.name << endl;
 165                                 tmp.draw = tmp.name;
 166                                 tmp.inset = "lyxtex";
 167                         }
 168                 } else {
 169                         // it's a proper inset
 170                         lyxerr[Debug::MATHED] << "inset " << tmp.inset
 171                                               << " used for " << tmp.name
 172                                               << endl;
 173                 }
 174
 175                 if (theWordList.find(tmp.name) != theWordList.end())
 176                         lyxerr[Debug::MATHED]
 177                                 << "readSymbols: inset " << tmp.name
 178                                 << " already exists." << endl;
 179                 else
 180                         theWordList[tmp.name] = tmp;
 181
 182                 lyxerr[Debug::MATHED]
 183                         << "read symbol '" << tmp.name
 184                         << "  inset: " << tmp.inset
 185                         << "  draw: " << int(tmp.draw.empty() ? 0 : tmp.draw[0])
 186                         << "  extra: " << tmp.extra
 187                         << '\'' << endl;
 188         }
 189         string tmp = "cmm";
 190         string tmp2 = "cmsy";
 191         has_math_fonts = math_font_available(tmp) && math_font_available(tmp2);
 192 }
 193
 194
 195 } // namespace anon
 196
 197
 198 void initMath()
 199 {
 200         static bool initialized = false;
 201         if (!initialized) {
 202                 initSymbols();
 203                 initialized = true;
 204         }
 205 }
 206
 207
 208 latexkeys const * in_word_set(string const & str)
 209 {
 210         WordList::iterator it = theWordList.find(str);
 211         //lyxerr << "looking up '" << str << "' found: "
 212         // << (it != theWordList.end()) << endl;
 213         return (it != theWordList.end()) ? &(it->second) : 0;
 214 }
 215
 216
 217 MathAtom createMathInset(string const & s)
 218 {
 219         lyxerr[Debug::MATHED] << "creating inset with name: '"
 220                               << s << '\'' << endl;;
 221         latexkeys const * l = in_word_set(s);
 222         if (l) {
 223                 string const & inset = l->inset;
 224                 lyxerr[Debug::MATHED] << " found inset: '" <<
 225                         inset << '\'' << endl;
 226                 if (inset == "ref")
 227                         return MathAtom(new RefInset(l->name));
 228                 if (inset == "underset")
 229                         return MathAtom(new MathUndersetInset);
 230                 if (inset == "decoration")
 231                         return MathAtom(new MathDecorationInset(l));
 232                 if (inset == "space")
 233                         return MathAtom(new MathSpaceInset(l->name));
 234                 if (inset == "dots")
 235                         return MathAtom(new MathDotsInset(l));
 236                 if (inset == "mbox")
 237                         return MathAtom(new MathBoxInset(l->name));
 238                 if (inset == "parbox")
 239                         return MathAtom(new MathParboxInset);
 240                 if (inset == "fbox")
 241                         return MathAtom(new MathFboxInset(l));
 242                 if (inset == "style")
 243                         return MathAtom(new MathSizeInset(l));
 244                 if (inset == "font")
 245                         return MathAtom(new MathFontInset(l));
 246                 if (inset == "oldfont")
 247                         return MathAtom(new MathFontOldInset(l));
 248                 if (inset == "matrix")
 249                         return MathAtom(new MathAMSArrayInset(s));
 250                 return MathAtom(new MathSymbolInset(l));
 251         }
 252
 253         if (s.size() == 2 && s[0] == '#' && s[1] >= '1' && s[1] <= '9')
 254                 return MathAtom(new MathMacroArgument(s[1] - '0'));
 255         if (s.size() == 3 && s[0] == '\\' && s[1] == '#'
 256                         && s[2] >= '1' && s[2] <= '9')
 257                 return MathAtom(new MathMacroArgument(s[2] - '0'));
 258         if (s == "framebox")
 259                 return MathAtom(new MathFrameboxInset);
 260         if (s == "kern")
 261                 return MathAtom(new MathKernInset);
 262         if (s == "xymatrix")
 263                 return MathAtom(new MathXYMatrixInset);
 264         if (s == "xrightarrow" || s == "xleftarrow")
 265                 return MathAtom(new MathXArrowInset(s));
 266         if (s == "split" || s == "gathered" || s == "aligned")
 267                 return MathAtom(new MathSplitInset(s));
 268         if (s == "cases")
 269                 return MathAtom(new MathCasesInset);
 270         if (s == "substack")
 271                 return MathAtom(new MathSubstackInset);
 272         if (s == "subarray" || s == "array")
 273                 return MathAtom(new MathArrayInset(s, 1, 1));
 274         if (s == "sqrt")
 275                 return MathAtom(new MathSqrtInset);
 276         if (s == "root")
 277                 return MathAtom(new MathRootInset);
 278         if (s == "stackrel")
 279                 return MathAtom(new MathStackrelInset);
 280         if (s == "binom" || s == "choose")
 281                 return MathAtom(new MathBinomInset(s == "choose"));
 282         if (s == "over" || s == "frac")
 283                 return MathAtom(new MathFracInset);
 284         //if (s == "infer")
 285         //      return MathAtom(new MathInferInset);
 286         if (s == "atop")
 287                 return MathAtom(new MathFracInset(true));
 288         if (s == "lefteqn")
 289                 return MathAtom(new MathLefteqnInset);
 290         if (s == "lyxert")
 291                 return MathAtom(new MathErtInset);
 292
 293         if (MathMacroTable::has(s))
 294                 return MathAtom(new MathMacro(s));
 295
 296         //lyxerr[Debug::MATHED] << "creating inset 2 with name: '" << s << '\'' << endl;
 297         return MathAtom(new MathUnknownInset(s));
 298 }