src/lyxfont.C

   1 /* This file is part of
   2  * ======================================================
   3  *
   4  *           LyX, The Document Processor
   5  *
   6  *           Copyright 1995 Matthias Ettrich
   7  *           Copyright 1995-2000 The LyX Team.
   8  *
   9  * ====================================================== */
  10
  11 #include <config.h>
  12 #include <clocale>
  13
  14 #ifdef __GNUG__
  15 #pragma implementation "lyxfont.h"
  16 #endif
  17
  18 #include <cctype>
  19
  20 #include "gettext.h"
  21 #include "lyxfont.h"
  22 #include "debug.h"
  23 #include "lyxrc.h"
  24 #include "lyxlex.h"
  25 #include "FontLoader.h"
  26 #include "support/lstrings.h"
  27 #include "bufferparams.h" // stateText
  28
  29 using std::ostream;
  30 using std::endl;
  31
  32 //
  33 // Names for the GUI
  34 //
  35
  36 static
  37 char const * GUIFamilyNames[6] =
  38 { N_("Roman"), N_("Sans serif"), N_("Typewriter"), N_("Symbol"), N_("Inherit"),
  39   N_("Ignore") };
  40
  41 static
  42 char const * GUISeriesNames[4] =
  43 { N_("Medium"), N_("Bold"), N_("Inherit"), N_("Ignore") };
  44
  45 static
  46 char const * GUIShapeNames[6] =
  47 { N_("Upright"), N_("Italic"), N_("Slanted"), N_("Smallcaps"), N_("Inherit"),
  48   N_("Ignore") };
  49
  50 static
  51 char const * GUISizeNames[14] =
  52 { N_("Tiny"), N_("Smallest"), N_("Smaller"), N_("Small"), N_("Normal"), N_("Large"),
  53   N_("Larger"), N_("Largest"), N_("Huge"), N_("Huger"), N_("Increase"), N_("Decrease"),
  54   N_("Inherit"), N_("Ignore") };
  55
  56 static
  57 char const * GUIMiscNames[5] =
  58 { N_("Off"), N_("On"), N_("Toggle"), N_("Inherit"), N_("Ignore") };
  59
  60
  61 //
  62 // Strings used to read and write .lyx format files
  63 //
  64 static
  65 char const * LyXFamilyNames[6] =
  66 { "roman", "sans", "typewriter", "symbol", "default", "error" };
  67
  68 static
  69 char const * LyXSeriesNames[4] =
  70 { "medium", "bold", "default", "error" };
  71
  72 static
  73 char const * LyXShapeNames[6] =
  74 { "up", "italic", "slanted", "smallcaps", "default", "error" };
  75
  76 static
  77 char const * LyXSizeNames[14] =
  78 { "tiny", "scriptsize", "footnotesize", "small", "normal", "large",
  79   "larger", "largest", "huge", "giant",
  80   "increase-error", "decrease-error", "default", "error" };
  81
  82 static
  83 char const * LyXMiscNames[5] =
  84 { "off", "on", "toggle", "default", "error" };
  85
  86 //
  87 // Strings used to write LaTeX files
  88 //
  89 static
  90 char const * LaTeXFamilyNames[6] =
  91 { "textrm", "textsf", "texttt", "error1", "error2", "error3" };
  92
  93 static
  94 char const * LaTeXSeriesNames[4] =
  95 { "textmd", "textbf", "error4", "error5" };
  96
  97 static
  98 char const * LaTeXShapeNames[6] =
  99 { "textup", "textit", "textsl", "textsc", "error6", "error7" };
 100
 101 static
 102 char const * LaTeXSizeNames[14] =
 103 { "tiny", "scriptsize", "footnotesize", "small", "normalsize", "large",
 104   "Large", "LARGE", "huge", "Huge", "error8", "error9", "error10", "error11" };
 105
 106
 107 LyXFont::FontBits LyXFont::sane = {
 108         ROMAN_FAMILY,
 109         MEDIUM_SERIES,
 110         UP_SHAPE,
 111         SIZE_NORMAL,
 112         LColor::none,
 113         OFF,
 114         OFF,
 115         OFF,
 116         OFF };
 117
 118 LyXFont::FontBits LyXFont::inherit = {
 119         INHERIT_FAMILY,
 120         INHERIT_SERIES,
 121         INHERIT_SHAPE,
 122         INHERIT_SIZE,
 123         LColor::inherit,
 124         INHERIT,
 125         INHERIT,
 126         INHERIT,
 127         INHERIT };
 128
 129 LyXFont::FontBits LyXFont::ignore = {
 130         IGNORE_FAMILY,
 131         IGNORE_SERIES,
 132         IGNORE_SHAPE,
 133         IGNORE_SIZE,
 134         LColor::ignore,
 135         IGNORE,
 136         IGNORE,
 137         IGNORE,
 138         IGNORE };
 139
 140
 141 bool LyXFont::FontBits::operator==(LyXFont::FontBits const & fb1) const
 142 {
 143                         return fb1.family == family &&
 144                                 fb1.series == series &&
 145                                 fb1.shape == shape &&
 146                                 fb1.size == size &&
 147                                 fb1.color == color &&
 148                                 fb1.emph == emph &&
 149                                 fb1.underbar == underbar &&
 150                                 fb1.noun == noun &&
 151                                 fb1.latex == latex;
 152 }
 153
 154
 155 bool LyXFont::FontBits::operator!=(LyXFont::FontBits const & fb1) const
 156 {
 157         return !(fb1 == *this);
 158 }
 159
 160
 161 /// Decreases font size by one
 162 LyXFont & LyXFont::decSize()
 163 {
 164         switch (size()) {
 165         case SIZE_HUGER:        setSize(SIZE_HUGE);     break;
 166         case SIZE_HUGE:         setSize(SIZE_LARGEST);  break;
 167         case SIZE_LARGEST:      setSize(SIZE_LARGER);   break;
 168         case SIZE_LARGER:       setSize(SIZE_LARGE);    break;
 169         case SIZE_LARGE:        setSize(SIZE_NORMAL);   break;
 170         case SIZE_NORMAL:       setSize(SIZE_SMALL);    break;
 171         case SIZE_SMALL:        setSize(SIZE_FOOTNOTE); break;
 172         case SIZE_FOOTNOTE:     setSize(SIZE_SCRIPT);   break;
 173         case SIZE_SCRIPT:       setSize(SIZE_TINY);     break;
 174         case SIZE_TINY:         break;
 175         case INCREASE_SIZE:
 176                 lyxerr << "Can't LyXFont::decSize on INCREASE_SIZE" << endl;
 177                 break;
 178         case DECREASE_SIZE:
 179                 lyxerr <<"Can't LyXFont::decSize on DECREASE_SIZE" << endl;
 180                 break;
 181         case INHERIT_SIZE:
 182                 lyxerr <<"Can't LyXFont::decSize on INHERIT_SIZE" << endl;
 183                 break;
 184         case IGNORE_SIZE:
 185                 lyxerr <<"Can't LyXFont::decSize on IGNORE_SIZE" << endl;
 186                 break;
 187         }
 188         return *this;
 189 }
 190
 191
 192 /// Increases font size by one
 193 LyXFont & LyXFont::incSize()
 194 {
 195         switch(size()) {
 196         case SIZE_HUGER:        break;
 197         case SIZE_HUGE:         setSize(SIZE_HUGER);    break;
 198         case SIZE_LARGEST:      setSize(SIZE_HUGE);     break;
 199         case SIZE_LARGER:       setSize(SIZE_LARGEST);  break;
 200         case SIZE_LARGE:        setSize(SIZE_LARGER);   break;
 201         case SIZE_NORMAL:       setSize(SIZE_LARGE);    break;
 202         case SIZE_SMALL:        setSize(SIZE_NORMAL);   break;
 203         case SIZE_FOOTNOTE:     setSize(SIZE_SMALL);    break;
 204         case SIZE_SCRIPT:       setSize(SIZE_FOOTNOTE); break;
 205         case SIZE_TINY:         setSize(SIZE_SCRIPT);   break;
 206         case INCREASE_SIZE:
 207                 lyxerr <<"Can't LyXFont::incSize on INCREASE_SIZE" << endl;
 208                 break;
 209         case DECREASE_SIZE:
 210                 lyxerr <<"Can't LyXFont::incSize on DECREASE_SIZE" << endl;
 211                 break;
 212         case INHERIT_SIZE:
 213                 lyxerr <<"Can't LyXFont::incSize on INHERIT_SIZE" << endl;
 214                 break;
 215         case IGNORE_SIZE:
 216                 lyxerr <<"Can't LyXFont::incSize on IGNORE_SIZE" << endl;
 217                 break;
 218         }
 219         return *this;
 220 }
 221
 222
 223 /// Updates a misc setting according to request
 224 LyXFont::FONT_MISC_STATE LyXFont::setMisc(FONT_MISC_STATE newfont,
 225                                           FONT_MISC_STATE org)
 226 {
 227         if (newfont == TOGGLE) {
 228                 if (org == ON)
 229                         return OFF;
 230                 else if (org == OFF)
 231                         return ON;
 232                 else {
 233                         lyxerr <<"LyXFont::setMisc: Need state"
 234                                 " ON or OFF to toggle. Setting to ON" << endl;
 235                         return ON;
 236                 }
 237         } else if (newfont == IGNORE)
 238                 return org;
 239         else
 240                 return newfont;
 241 }
 242
 243
 244 /// Updates font settings according to request
 245 void LyXFont::update(LyXFont const & newfont,
 246                      Language const * document_language, bool toggleall)
 247 {
 248         if(newfont.family() == family() && toggleall)
 249                 setFamily(INHERIT_FAMILY); // toggle 'back'
 250         else if (newfont.family() != IGNORE_FAMILY)
 251                 setFamily(newfont.family());
 252         // else it's IGNORE_SHAPE
 253
 254         // "Old" behaviour: "Setting" bold will toggle bold on/off.
 255         switch (newfont.series()) {
 256         case BOLD_SERIES:
 257                 // We toggle...
 258                 if (series() == BOLD_SERIES && toggleall)
 259                         setSeries(MEDIUM_SERIES);
 260                 else
 261                         setSeries(BOLD_SERIES);
 262                 break;
 263         case MEDIUM_SERIES:
 264         case INHERIT_SERIES:
 265                 setSeries(newfont.series());
 266                 break;
 267         case IGNORE_SERIES:
 268                 break;
 269         }
 270
 271         if(newfont.shape() == shape() && toggleall)
 272                 setShape(INHERIT_SHAPE); // toggle 'back'
 273         else if (newfont.shape() != IGNORE_SHAPE)
 274                 setShape(newfont.shape());
 275         // else it's IGNORE_SHAPE
 276
 277         if (newfont.size() != IGNORE_SIZE) {
 278                 if (newfont.size() == INCREASE_SIZE)
 279                         incSize();
 280                 else if (newfont.size() == DECREASE_SIZE)
 281                         decSize();
 282                 else if (newfont.size() == size() && toggleall)
 283                         setSize(INHERIT_SIZE); // toggle 'back'
 284                 else
 285                         setSize(newfont.size());
 286         }
 287
 288         setEmph(setMisc(newfont.emph(), emph()));
 289         setUnderbar(setMisc(newfont.underbar(), underbar()));
 290         setNoun(setMisc(newfont.noun(), noun()));
 291         setLatex(setMisc(newfont.latex(), latex()));
 292
 293         if (newfont.language() == language() && toggleall)
 294                 if (language() == document_language)
 295                         setLanguage(default_language);
 296                 else
 297                         setLanguage(document_language);
 298         else if (newfont.language() != ignore_language)
 299                 setLanguage(newfont.language());
 300
 301         if (newfont.color() == color() && toggleall)
 302                 setColor(LColor::inherit); // toggle 'back'
 303         else if (newfont.color() != LColor::ignore)
 304                 setColor(newfont.color());
 305 }
 306
 307
 308 /// Reduce font to fall back to template where possible
 309 void LyXFont::reduce(LyXFont const & tmplt)
 310 {
 311         if (family() == tmplt.family())
 312                 setFamily(INHERIT_FAMILY);
 313         if (series() == tmplt.series())
 314                 setSeries(INHERIT_SERIES);
 315         if (shape() == tmplt.shape())
 316                 setShape(INHERIT_SHAPE);
 317         if (size() == tmplt.size())
 318                 setSize(INHERIT_SIZE);
 319         if (emph() == tmplt.emph())
 320                 setEmph(INHERIT);
 321         if (underbar() == tmplt.underbar())
 322                 setUnderbar(INHERIT);
 323         if (noun() == tmplt.noun())
 324                 setNoun(INHERIT);
 325         if (latex() == tmplt.latex())
 326                 setLatex(INHERIT);
 327         if (color() == tmplt.color())
 328                 setColor(LColor::inherit);
 329 }
 330
 331
 332 /// Realize font from a template
 333 LyXFont & LyXFont::realize(LyXFont const & tmplt)
 334 {
 335         if (bits == inherit) {
 336                 bits = tmplt.bits;
 337                 return *this;
 338         }
 339
 340         if (bits.family == INHERIT_FAMILY) {
 341                 bits.family = tmplt.bits.family;
 342         }
 343         if (bits.series == INHERIT_SERIES) {
 344                 bits.series = tmplt.bits.series;
 345         }
 346         if (bits.shape == INHERIT_SHAPE) {
 347                 bits.shape = tmplt.bits.shape;
 348         }
 349         if (bits.size == INHERIT_SIZE) {
 350                 bits.size = tmplt.bits.size;
 351         }
 352         if (bits.emph == INHERIT) {
 353                 bits.emph = tmplt.bits.emph;
 354         }
 355         if (bits.underbar == INHERIT) {
 356                 bits.underbar = tmplt.bits.underbar;
 357         }
 358         if (bits.noun == INHERIT) {
 359                 bits.noun = tmplt.bits.noun;
 360         }
 361         if (bits.latex == INHERIT) {
 362                 bits.latex = tmplt.bits.latex;
 363         }
 364         if (bits.color == LColor::inherit) {
 365                 bits.color = tmplt.bits.color;
 366         }
 367
 368         return *this;
 369 }
 370
 371
 372 /// Is font resolved?
 373 bool LyXFont::resolved() const
 374 {
 375         return (family() != INHERIT_FAMILY && series() != INHERIT_SERIES &&
 376                 shape() != INHERIT_SHAPE && size() != INHERIT_SIZE &&
 377                 emph() != INHERIT && underbar() != INHERIT &&
 378                 noun() != INHERIT && latex() != INHERIT &&
 379                 color() != LColor::inherit);
 380 }
 381
 382
 383 /// Build GUI description of font state
 384 string const LyXFont::stateText(BufferParams * params) const
 385 {
 386         std::ostringstream ost;
 387         if (family() != INHERIT_FAMILY)
 388                 ost << _(GUIFamilyNames[family()]) << ", ";
 389         if (series() != INHERIT_SERIES)
 390                 ost << _(GUISeriesNames[series()]) << ", ";
 391         if (shape() != INHERIT_SHAPE)
 392                 ost << _(GUIShapeNames[shape()]) << ", ";
 393         if (size() != INHERIT_SIZE)
 394                 ost << _(GUISizeNames[size()]) << ", ";
 395         if (color() != LColor::inherit)
 396                 ost << lcolor.getGUIName(color()) << ", ";
 397         if (emph() != INHERIT)
 398                 ost << _("Emphasis ")
 399                     << _(GUIMiscNames[emph()]) << ", ";
 400         if (underbar() != INHERIT)
 401                 ost << _("Underline ")
 402                     << _(GUIMiscNames[underbar()]) << ", ";
 403         if (noun() != INHERIT)
 404                 ost << _("Noun ") << _(GUIMiscNames[noun()]) << ", ";
 405         if (latex() != INHERIT)
 406                 ost << _("Latex ") << _(GUIMiscNames[latex()]) << ", ";
 407         if (bits == inherit)
 408                 ost << _("Default") << ", ";
 409         if (!params || (language() != params->language_info &&
 410                         language()->lang() != "default"))
 411                 ost << _("Language: ") << _(language()->display().c_str());
 412
 413         string buf(ost.str().c_str());
 414         buf = strip(buf, ' ');
 415         buf = strip(buf, ',');
 416         return buf;
 417 }
 418
 419
 420 // Set family according to lyx format string
 421 LyXFont & LyXFont::setLyXFamily(string const & fam)
 422 {
 423         string s = lowercase(fam);
 424
 425         int i = 0;
 426         while (s != LyXFamilyNames[i] && LyXFamilyNames[i] != "error") ++i;
 427         if (s == LyXFamilyNames[i]) {
 428                 setFamily(LyXFont::FONT_FAMILY(i));
 429         } else
 430                 lyxerr << "LyXFont::setLyXFamily: Unknown family `"
 431                        << s << '\'' << endl;
 432         return *this;
 433 }
 434
 435
 436 // Set series according to lyx format string
 437 LyXFont & LyXFont::setLyXSeries(string const & ser)
 438 {
 439         string s = lowercase(ser);
 440
 441         int i = 0;
 442         while (s != LyXSeriesNames[i] && LyXSeriesNames[i] != "error") ++i;
 443         if (s == LyXSeriesNames[i]) {
 444                 setSeries(LyXFont::FONT_SERIES(i));
 445         } else
 446                 lyxerr << "LyXFont::setLyXSeries: Unknown series `"
 447                        << s << '\'' << endl;
 448         return *this;
 449 }
 450
 451
 452 // Set shape according to lyx format string
 453 LyXFont & LyXFont::setLyXShape(string const & sha)
 454 {
 455         string s = lowercase(sha);
 456
 457         int i = 0;
 458         while (s != LyXShapeNames[i] && LyXShapeNames[i] != "error") ++i;
 459         if (s == LyXShapeNames[i]) {
 460                 setShape(LyXFont::FONT_SHAPE(i));
 461         } else
 462                 lyxerr << "LyXFont::setLyXShape: Unknown shape `"
 463                        << s << '\'' << endl;
 464         return *this;
 465 }
 466
 467
 468 // Set size according to lyx format string
 469 LyXFont & LyXFont::setLyXSize(string const & siz)
 470 {
 471         string s = lowercase(siz);
 472         int i = 0;
 473         while (s != LyXSizeNames[i] && LyXSizeNames[i] != "error") ++i;
 474         if (s == LyXSizeNames[i]) {
 475                 setSize(LyXFont::FONT_SIZE(i));
 476         } else
 477                 lyxerr << "LyXFont::setLyXSize: Unknown size `"
 478                        << s << '\'' << endl;
 479         return *this;
 480 }
 481
 482
 483 // Set size according to lyx format string
 484 LyXFont::FONT_MISC_STATE LyXFont::setLyXMisc(string const & siz)
 485 {
 486         string s = lowercase(siz);
 487         int i = 0;
 488         while (s != LyXMiscNames[i] && LyXMiscNames[i] != "error") ++i;
 489         if (s == LyXMiscNames[i])
 490                 return FONT_MISC_STATE(i);
 491         lyxerr << "LyXFont::setLyXMisc: Unknown misc flag `"
 492                << s << '\'' << endl;
 493         return OFF;
 494 }
 495
 496
 497 /// Sets color after LyX text format
 498 LyXFont & LyXFont::setLyXColor(string const & col)
 499 {
 500         setColor(lcolor.getFromLyXName(col));
 501         return *this;
 502 }
 503
 504
 505 /// Sets size after GUI name
 506 LyXFont & LyXFont::setGUISize(string const & siz)
 507 {
 508         // CHECK this might be wrong.
 509         /// ??????
 510         // this is how it was how it was done in the lyx repository...
 511         // but this does not make sense.
 512         setColor(lcolor.getFromGUIName(siz));
 513         return *this;
 514 }
 515
 516
 517 // Returns size in latex format
 518 string const LyXFont::latexSize() const
 519 {
 520         return LaTeXSizeNames[size()];
 521 }
 522
 523
 524 // Read a font definition from given file in lyx format
 525 // Used for layouts
 526 LyXFont & LyXFont::lyxRead(LyXLex & lex)
 527 {
 528         bool error = false;
 529         bool finished = false;
 530         while (!finished && lex.IsOK() && !error) {
 531                 lex.next();
 532                 string tok = lowercase(lex.GetString());
 533
 534                 if (tok.empty()) {
 535                         continue;
 536                 } else if (tok == "endfont") {
 537                         finished = true;
 538                 } else if (tok == "family") {
 539                         lex.next();
 540                         string tok = lex.GetString();
 541                         setLyXFamily(tok);
 542                 } else if (tok == "series") {
 543                         lex.next();
 544                         string tok = lex.GetString();
 545                         setLyXSeries(tok);
 546                 } else if (tok == "shape") {
 547                         lex.next();
 548                         string tok = lex.GetString();
 549                         setLyXShape(tok);
 550                 } else if (tok == "size") {
 551                         lex.next();
 552                         string tok = lex.GetString();
 553                         setLyXSize(tok);
 554                 } else if (tok == "latex") {
 555                         lex.next();
 556                         string tok = lowercase(lex.GetString());
 557
 558                         if (tok == "no_latex") {
 559                                 setLatex(OFF);
 560                         } else if (tok == "latex") {
 561                                 setLatex(ON);
 562                         } else {
 563                                 lex.printError("Illegal LaTeX type`$$Token'");
 564                         }
 565                 } else if (tok == "misc") {
 566                         lex.next();
 567                         string tok = lowercase(lex.GetString());
 568
 569                         if (tok == "no_bar") {
 570                                 setUnderbar(OFF);
 571                         } else if (tok == "no_emph") {
 572                                 setEmph(OFF);
 573                         } else if (tok == "no_noun") {
 574                                 setNoun(OFF);
 575                         } else if (tok == "emph") {
 576                                 setEmph(ON);
 577                         } else if (tok == "underbar") {
 578                                 setUnderbar(ON);
 579                         } else if (tok == "noun") {
 580                                 setNoun(ON);
 581                         } else {
 582                                 lex.printError("Illegal misc type `$$Token´");
 583                         }
 584                 } else if (tok == "color") {
 585                         lex.next();
 586                         string tok = lex.GetString();
 587                         setLyXColor(tok);
 588                 } else {
 589                         lex.printError("Unknown tag `$$Token'");
 590                         error = true;
 591                 }
 592         }
 593         return *this;
 594 }
 595
 596
 597 /// Writes the changes from this font to orgfont in .lyx format in file
 598 void LyXFont::lyxWriteChanges(LyXFont const & orgfont, ostream & os) const
 599 {
 600         os << "\n";
 601         if (orgfont.family() != family()) {
 602                 os << "\\family " << LyXFamilyNames[family()] << " \n";
 603         }
 604         if (orgfont.series() != series()) {
 605                 os << "\\series " << LyXSeriesNames[series()] << " \n";
 606         }
 607         if (orgfont.shape() != shape()) {
 608                 os << "\\shape " << LyXShapeNames[shape()] << " \n";
 609         }
 610         if (orgfont.size() != size()) {
 611                 os << "\\size " << LyXSizeNames[size()] << " \n";
 612         }
 613         if (orgfont.emph() != emph()) {
 614                 os << "\\emph " << LyXMiscNames[emph()] << " \n";
 615         }
 616         if (orgfont.underbar() != underbar()) {
 617                 // This is only for backwards compatibility
 618                 switch (underbar()) {
 619                 case OFF:       os << "\\bar no \n"; break;
 620                 case ON:        os << "\\bar under \n"; break;
 621                 case TOGGLE:    lyxerr << "LyXFont::lyxWriteFontChanges: "
 622                                         "TOGGLE should not appear here!"
 623                                        << endl;
 624                 break;
 625                 case INHERIT:   os << "\\bar default \n"; break;
 626                 case IGNORE:    lyxerr << "LyXFont::lyxWriteFontChanges: "
 627                                         "IGNORE should not appear here!"
 628                                        << endl;
 629                 break;
 630                 }
 631         }
 632         if (orgfont.noun() != noun()) {
 633                 os << "\\noun " << LyXMiscNames[noun()] << " \n";
 634         }
 635         if (orgfont.latex() != latex()) {
 636                 // This is only for backwards compatibility
 637                 switch (latex()) {
 638                 case OFF:       os << "\\latex no_latex \n"; break;
 639                 case ON:        os << "\\latex latex \n"; break;
 640                 case TOGGLE:    lyxerr << "LyXFont::lyxWriteFontChanges: "
 641                                         "TOGGLE should not appear here!"
 642                                        << endl;
 643                 break;
 644                 case INHERIT:   os << "\\latex default \n"; break;
 645                 case IGNORE:    lyxerr << "LyXFont::lyxWriteFontChanges: "
 646                                         "IGNORE should not appear here!"
 647                                        << endl;
 648                 break;
 649                 }
 650         }
 651         if (orgfont.color() != color()) {
 652                 // To make us file compatible with older
 653                 // lyx versions we emit "default" instead
 654                 // of "inherit"
 655                 string col_str(lcolor.getLyXName(color()));
 656                 if (col_str == "inherit") col_str = "default";
 657                 os << "\\color " << col_str << "\n";
 658         }
 659         if (orgfont.language() != language() &&
 660             language()->lang() != "default") {
 661                 if (language())
 662                         os << "\\lang " << language()->lang() << "\n";
 663                 else
 664                         os << "\\lang unknown\n";
 665         }
 666 }
 667
 668
 669 /// Writes the head of the LaTeX needed to impose this font
 670 // Returns number of chars written.
 671 int LyXFont::latexWriteStartChanges(ostream & os, LyXFont const & base,
 672                                     LyXFont const & prev) const
 673 {
 674         int count = 0;
 675         bool env = false;
 676
 677         if (language() != base.language() && language() != prev.language() &&
 678             language()->lang() != "default") {
 679                 if (isRightToLeft() != prev.isRightToLeft()) {
 680                         if (isRightToLeft()) {
 681                                 os << "\\R{";
 682                                 count += 3;
 683                                 env = true; //We have opened a new environment
 684                         } else {
 685                                 os << "\\L{";
 686                                 count += 3;
 687                                 env = true; //We have opened a new environment
 688                         }
 689                 } else {
 690                         string tmp = '{' +
 691                                 subst(lyxrc.language_command_begin,
 692                                       "$$lang", language()->lang());
 693                         os << tmp;
 694                         count += tmp.length();
 695                         env = true; //We have opened a new environment
 696                 }
 697         }
 698
 699         LyXFont f = *this;
 700         f.reduce(base);
 701
 702         if (f.family() != INHERIT_FAMILY) {
 703                 os << '\\'
 704                    << LaTeXFamilyNames[f.family()]
 705                    << '{';
 706                 count += strlen(LaTeXFamilyNames[f.family()]) + 2;
 707                 env = true; //We have opened a new environment
 708         }
 709         if (f.series() != INHERIT_SERIES) {
 710                 os << '\\'
 711                    << LaTeXSeriesNames[f.series()]
 712                    << '{';
 713                 count += strlen(LaTeXSeriesNames[f.series()]) + 2;
 714                 env = true; //We have opened a new environment
 715         }
 716         if (f.shape() != INHERIT_SHAPE) {
 717                 os << '\\'
 718                    << LaTeXShapeNames[f.shape()]
 719                    << '{';
 720                 count += strlen(LaTeXShapeNames[f.shape()]) + 2;
 721                 env = true; //We have opened a new environment
 722         }
 723         if (f.color() != LColor::inherit && f.color() != LColor::ignore) {
 724                 os << "\\textcolor{"
 725                    << lcolor.getLaTeXName(f.color())
 726                    << "}{";
 727                 count += lcolor.getLaTeXName(f.color()).length() + 13;
 728                 env = true; //We have opened a new environment
 729         }
 730         if (f.emph() == ON) {
 731                 os << "\\emph{";
 732                 count += 6;
 733                 env = true; //We have opened a new environment
 734         }
 735         if (f.underbar() == ON) {
 736                 os << "\\underbar{";
 737                 count += 10;
 738                 env = true; //We have opened a new environment
 739         }
 740         // \noun{} is a LyX special macro
 741         if (f.noun() == ON) {
 742                 os << "\\noun{";
 743                 count += 8;
 744                 env = true; //We have opened a new environment
 745         }
 746         if (f.size() != INHERIT_SIZE) {
 747                 // If we didn't open an environment above, we open one here
 748                 if (!env) {
 749                         os << '{';
 750                         ++count;
 751                 }
 752                 os << '\\'
 753                    << LaTeXSizeNames[f.size()]
 754                    << ' ';
 755                 count += strlen(LaTeXSizeNames[f.size()]) + 2;
 756         }
 757         return count;
 758 }
 759
 760
 761 /// Writes ending block of LaTeX needed to close use of this font
 762 // Returns number of chars written
 763 // This one corresponds to latexWriteStartChanges(). (Asger)
 764 int LyXFont::latexWriteEndChanges(ostream & os, LyXFont const & base,
 765                                   LyXFont const & next) const
 766 {
 767         int count = 0;
 768         bool env = false;
 769
 770         if (language() != base.language() && language() != next.language()
 771             && language()->lang() != "default") {
 772                 os << "}";
 773                 ++count;
 774                 env = true; // Size change need not bother about closing env.
 775         }
 776
 777         LyXFont f = *this; // why do you need this?
 778         f.reduce(base); // why isn't this just "reduce(base);" (Lgb)
 779         // Because this function is const. Everything breaks if this
 780         // method changes the font it represents. There is no speed penalty
 781         // by using the temporary. (Asger)
 782
 783         if (f.family() != INHERIT_FAMILY) {
 784                 os << '}';
 785                 ++count;
 786                 env = true; // Size change need not bother about closing env.
 787         }
 788         if (f.series() != INHERIT_SERIES) {
 789                 os << '}';
 790                 ++count;
 791                 env = true; // Size change need not bother about closing env.
 792         }
 793         if (f.shape() != INHERIT_SHAPE) {
 794                 os << '}';
 795                 ++count;
 796                 env = true; // Size change need not bother about closing env.
 797         }
 798         if (f.color() != LColor::inherit && f.color() != LColor::ignore) {
 799                 os << '}';
 800                 ++count;
 801                 env = true; // Size change need not bother about closing env.
 802         }
 803         if (f.emph() == ON) {
 804                 os << '}';
 805                 ++count;
 806                 env = true; // Size change need not bother about closing env.
 807         }
 808         if (f.underbar() == ON) {
 809                 os << '}';
 810                 ++count;
 811                 env = true; // Size change need not bother about closing env.
 812         }
 813         if (f.noun() == ON) {
 814                 os << '}';
 815                 ++count;
 816                 env = true; // Size change need not bother about closing env.
 817         }
 818         if (f.size() != INHERIT_SIZE) {
 819                 // We only have to close if only size changed
 820                 if (!env) {
 821                         os << '}';
 822                         ++count;
 823                 }
 824         }
 825
 826         return count;
 827 }
 828
 829
 830 LColor::color LyXFont::realColor() const
 831 {
 832         if (latex() == ON)
 833                 return LColor::latex;
 834         if (color() == LColor::none)
 835                 return LColor::foreground;
 836         return color();
 837 }
 838
 839
 840 // Convert logical attributes to concrete shape attribute
 841 LyXFont::FONT_SHAPE LyXFont::realShape() const
 842 {
 843         register FONT_SHAPE s = shape();
 844
 845         if (emph() == ON) {
 846                 if (s == UP_SHAPE)
 847                         s = ITALIC_SHAPE;
 848                 else
 849                         s = UP_SHAPE;
 850         }
 851         if (noun() == ON)
 852                 s = SMALLCAPS_SHAPE;
 853         return s;
 854 }
 855
 856
 857 bool LyXFont::equalExceptLatex(LyXFont const & f) const
 858 {
 859         LyXFont f1 = *this;
 860         f1.setLatex(f.latex());
 861         return f1 == f;
 862 }
 863
 864
 865 ostream & operator<<(ostream & o, LyXFont::FONT_MISC_STATE fms)
 866 {
 867         return o << int(fms);
 868 }