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_tabularinset.h"
  35 #include "math_undersetinset.h"
  36 #include "math_unknowninset.h"
  37 #include "math_xarrowinset.h"
  38 #include "math_xymatrixinset.h"
  39 #include "math_xyarrowinset.h"
  40
  41 //#include "insets/insetref.h"
  42 #include "ref_inset.h"
  43
  44 #include "math_metricsinfo.h"
  45 #include "debug.h"
  46 #include "math_support.h"
  47 #include "Lsstream.h"
  48 #include "support/filetools.h" // LibFileSearch
  49 #include "frontends/lyx_gui.h"
  50
  51 #include <map>
  52 #include <fstream>
  53
  54 bool has_math_fonts;
  55
  56 using std::endl;
  57
  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"
  83                 << endl;
  84         return false;
  85 }
  86
  87
  88 void initSymbols()
  89 {
  90         string const filename = LibFileSearch(string(), "symbols");
  91         lyxerr[Debug::MATHED] << "read symbols from " << filename << endl;
  92         if (filename.empty()) {
  93                 lyxerr << "Could not find symbols file" << endl;
  94                 return;
  95         }
  96
  97         std::ifstream fs(filename.c_str());
  98         string line;
  99         bool skip = false;
 100         while (getline(fs, line)) {
 101                 int charid     = 0;
 102                 int fallbackid = 0;
 103                 if (!line.empty() && line[0] == '#')
 104                         continue;
 105
 106                 // special case of iffont/else/endif
 107                 if (line.size() >= 7 && line.substr(0, 6) == "iffont") {
 108                         istringstream is(STRCONV(line));
 109                         string tmp;
 110                         is >> tmp;
 111                         is >> tmp;
 112                         skip = !math_font_available(tmp);
 113                         continue;
 114                 } else if (line.size() >= 4 && line.substr(0, 4) == "else") {
 115                         skip = !skip;
 116                 } else if (line.size() >= 5 && line.substr(0, 5) == "endif") {
 117                         skip = false;
 118                         continue;
 119                 } else if (skip)
 120                         continue;
 121
 122                 // special case of pre-defined macros
 123                 if (line.size() > 8 && line.substr(0, 5) == "\\def\\") {
 124                         //lyxerr << "defining: '" << line << '\'' << endl;
 125                         istringstream is(STRCONV(line));
 126                         MathMacroTable::create(MathAtom(new MathMacroTemplate(is)));
 127                         continue;
 128                 }
 129
 130                 istringstream is(STRCONV(line));
 131                 latexkeys tmp;
 132                 is >> tmp.name >> tmp.inset;
 133                 if (isFontName(tmp.inset))
 134                         is >> charid >> fallbackid >> tmp.extra >> tmp.xmlname;
 135                 else
 136                         is >> tmp.extra;
 137                 if (!is) {
 138                         lyxerr[Debug::MATHED] << "skipping line '" << line << '\'' << endl;
 139                         lyxerr[Debug::MATHED]
 140                                 << tmp.name << ' ' << tmp.inset << ' ' << tmp.extra << endl;
 141                         continue;
 142                 }
 143
 144                 if (isFontName(tmp.inset)) {
 145                         // tmp.inset _is_ the fontname here.
 146                         // create fallbacks if necessary
 147
 148                         // symbol font is not available sometimes
 149                         string symbol_font = "lyxsymbol";
 150
 151                         if (tmp.extra == "func" || tmp.extra == "funclim" || tmp.extra == "special") {
 152                                 lyxerr[Debug::MATHED] << "symbol abuse for " << tmp.name << endl;
 153                                 tmp.draw = tmp.name;
 154                         } else if (math_font_available(tmp.inset)) {
 155                                 lyxerr[Debug::MATHED] << "symbol available for " << tmp.name << endl;
 156                                 tmp.draw += char(charid);
 157                         } else if (fallbackid && math_font_available(symbol_font)) {
 158                                 if (tmp.inset == "cmex")
 159                                         tmp.inset  = "lyxsymbol";
 160                                 else
 161                                         tmp.inset  = "lyxboldsymbol";
 162                                 lyxerr[Debug::MATHED] << "symbol fallback for " << tmp.name << endl;
 163                                 tmp.draw += char(fallbackid);
 164                         } else {
 165                                 lyxerr[Debug::MATHED] << "faking " << tmp.name << endl;
 166                                 tmp.draw = tmp.name;
 167                                 tmp.inset = "lyxtex";
 168                         }
 169                 } else {
 170                         // it's a proper inset
 171                         lyxerr[Debug::MATHED] << "inset " << tmp.inset
 172                                               << " used for " << tmp.name
 173                                               << endl;
 174                 }
 175
 176                 if (theWordList.find(tmp.name) != theWordList.end())
 177                         lyxerr[Debug::MATHED]
 178                                 << "readSymbols: inset " << tmp.name
 179                                 << " already exists." << endl;
 180                 else
 181                         theWordList[tmp.name] = tmp;
 182
 183                 lyxerr[Debug::MATHED]
 184                         << "read symbol '" << tmp.name
 185                         << "  inset: " << tmp.inset
 186                         << "  draw: " << int(tmp.draw.empty() ? 0 : tmp.draw[0])
 187                         << "  extra: " << tmp.extra
 188                         << '\'' << endl;
 189         }
 190         string tmp = "cmm";
 191         string tmp2 = "cmsy";
 192         has_math_fonts = math_font_available(tmp) && math_font_available(tmp2);
 193 }
 194
 195
 196 } // namespace anon
 197
 198
 199 void initMath()
 200 {
 201         static bool initialized = false;
 202         if (!initialized) {
 203                 initSymbols();
 204                 initialized = true;
 205         }
 206 }
 207
 208
 209 latexkeys const * in_word_set(string const & str)
 210 {
 211         WordList::iterator it = theWordList.find(str);
 212         //lyxerr << "looking up '" << str << "' found: "
 213         // << (it != theWordList.end()) << endl;
 214         return (it != theWordList.end()) ? &(it->second) : 0;
 215 }
 216
 217
 218 MathAtom createMathInset(string const & s)
 219 {
 220         lyxerr[Debug::MATHED] << "creating inset with name: '"
 221                               << s << '\'' << endl;;
 222         latexkeys const * l = in_word_set(s);
 223         if (l) {
 224                 string const & inset = l->inset;
 225                 lyxerr[Debug::MATHED] << " found inset: '" <<
 226                         inset << '\'' << endl;
 227                 if (inset == "ref")
 228                         return MathAtom(new RefInset(l->name));
 229                 if (inset == "underset")
 230                         return MathAtom(new MathUndersetInset);
 231                 if (inset == "decoration")
 232                         return MathAtom(new MathDecorationInset(l));
 233                 if (inset == "space")
 234                         return MathAtom(new MathSpaceInset(l->name));
 235                 if (inset == "dots")
 236                         return MathAtom(new MathDotsInset(l));
 237                 if (inset == "mbox")
 238                         return MathAtom(new MathBoxInset(l->name));
 239                 if (inset == "parbox")
 240                         return MathAtom(new MathParboxInset);
 241                 if (inset == "fbox")
 242                         return MathAtom(new MathFboxInset(l));
 243                 if (inset == "style")
 244                         return MathAtom(new MathSizeInset(l));
 245                 if (inset == "font")
 246                         return MathAtom(new MathFontInset(l));
 247                 if (inset == "oldfont")
 248                         return MathAtom(new MathFontOldInset(l));
 249                 if (inset == "matrix")
 250                         return MathAtom(new MathAMSArrayInset(s));
 251                 return MathAtom(new MathSymbolInset(l));
 252         }
 253
 254         if (s.size() == 2 && s[0] == '#' && s[1] >= '1' && s[1] <= '9')
 255                 return MathAtom(new MathMacroArgument(s[1] - '0'));
 256         if (s.size() == 3 && s[0] == '\\' && s[1] == '#'
 257                         && s[2] >= '1' && s[2] <= '9')
 258                 return MathAtom(new MathMacroArgument(s[2] - '0'));
 259         if (s == "framebox")
 260                 return MathAtom(new MathFrameboxInset);
 261         if (s == "kern")
 262                 return MathAtom(new MathKernInset);
 263         if (s == "xymatrix")
 264                 return MathAtom(new MathXYMatrixInset);
 265         if (s == "xrightarrow" || s == "xleftarrow")
 266                 return MathAtom(new MathXArrowInset(s));
 267         if (s == "split" || s == "gathered" || s == "aligned")
 268                 return MathAtom(new MathSplitInset(s));
 269         if (s == "cases")
 270                 return MathAtom(new MathCasesInset);
 271         if (s == "substack")
 272                 return MathAtom(new MathSubstackInset);
 273         if (s == "subarray" || s == "array")
 274                 return MathAtom(new MathArrayInset(s, 1, 1));
 275         if (s == "sqrt")
 276                 return MathAtom(new MathSqrtInset);
 277         if (s == "root")
 278                 return MathAtom(new MathRootInset);
 279         if (s == "tabular")
 280                 return MathAtom(new MathTabularInset(s, 1, 1));
 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 }