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         setNumber(setMisc(newfont.number(), number()));
 294         if (newfont.language() == language() && toggleall)
 295                 if (language() == document_language)
 296                         setLanguage(default_language);
 297                 else
 298                         setLanguage(document_language);
 299         else if (newfont.language() != ignore_language)
 300                 setLanguage(newfont.language());
 301
 302         if (newfont.color() == color() && toggleall)
 303                 setColor(LColor::inherit); // toggle 'back'
 304         else if (newfont.color() != LColor::ignore)
 305                 setColor(newfont.color());
 306 }
 307
 308
 309 /// Reduce font to fall back to template where possible
 310 void LyXFont::reduce(LyXFont const & tmplt)
 311 {
 312         if (family() == tmplt.family())
 313                 setFamily(INHERIT_FAMILY);
 314         if (series() == tmplt.series())
 315                 setSeries(INHERIT_SERIES);
 316         if (shape() == tmplt.shape())
 317                 setShape(INHERIT_SHAPE);
 318         if (size() == tmplt.size())
 319                 setSize(INHERIT_SIZE);
 320         if (emph() == tmplt.emph())
 321                 setEmph(INHERIT);
 322         if (underbar() == tmplt.underbar())
 323                 setUnderbar(INHERIT);
 324         if (noun() == tmplt.noun())
 325                 setNoun(INHERIT);
 326         if (latex() == tmplt.latex())
 327                 setLatex(INHERIT);
 328         if (color() == tmplt.color())
 329                 setColor(LColor::inherit);
 330 }
 331
 332
 333 /// Realize font from a template
 334 LyXFont & LyXFont::realize(LyXFont const & tmplt)
 335 {
 336         if (bits == inherit) {
 337                 bits = tmplt.bits;
 338                 return *this;
 339         }
 340
 341         if (bits.family == INHERIT_FAMILY) {
 342                 bits.family = tmplt.bits.family;
 343         }
 344         if (bits.series == INHERIT_SERIES) {
 345                 bits.series = tmplt.bits.series;
 346         }
 347         if (bits.shape == INHERIT_SHAPE) {
 348                 bits.shape = tmplt.bits.shape;
 349         }
 350         if (bits.size == INHERIT_SIZE) {
 351                 bits.size = tmplt.bits.size;
 352         }
 353         if (bits.emph == INHERIT) {
 354                 bits.emph = tmplt.bits.emph;
 355         }
 356         if (bits.underbar == INHERIT) {
 357                 bits.underbar = tmplt.bits.underbar;
 358         }
 359         if (bits.noun == INHERIT) {
 360                 bits.noun = tmplt.bits.noun;
 361         }
 362         if (bits.latex == INHERIT) {
 363                 bits.latex = tmplt.bits.latex;
 364         }
 365         if (bits.color == LColor::inherit) {
 366                 bits.color = tmplt.bits.color;
 367         }
 368
 369         return *this;
 370 }
 371
 372
 373 /// Is font resolved?
 374 bool LyXFont::resolved() const
 375 {
 376         return (family() != INHERIT_FAMILY && series() != INHERIT_SERIES &&
 377                 shape() != INHERIT_SHAPE && size() != INHERIT_SIZE &&
 378                 emph() != INHERIT && underbar() != INHERIT &&
 379                 noun() != INHERIT && latex() != INHERIT &&
 380                 color() != LColor::inherit);
 381 }
 382
 383
 384 /// Build GUI description of font state
 385 string const LyXFont::stateText(BufferParams * params) const
 386 {
 387         std::ostringstream ost;
 388         if (family() != INHERIT_FAMILY)
 389                 ost << _(GUIFamilyNames[family()]) << ", ";
 390         if (series() != INHERIT_SERIES)
 391                 ost << _(GUISeriesNames[series()]) << ", ";
 392         if (shape() != INHERIT_SHAPE)
 393                 ost << _(GUIShapeNames[shape()]) << ", ";
 394         if (size() != INHERIT_SIZE)
 395                 ost << _(GUISizeNames[size()]) << ", ";
 396         if (color() != LColor::inherit)
 397                 ost << lcolor.getGUIName(color()) << ", ";
 398         if (emph() != INHERIT)
 399                 ost << _("Emphasis ")
 400                     << _(GUIMiscNames[emph()]) << ", ";
 401         if (underbar() != INHERIT)
 402                 ost << _("Underline ")
 403                     << _(GUIMiscNames[underbar()]) << ", ";
 404         if (noun() != INHERIT)
 405                 ost << _("Noun ") << _(GUIMiscNames[noun()]) << ", ";
 406         if (latex() != INHERIT)
 407                 ost << _("Latex ") << _(GUIMiscNames[latex()]) << ", ";
 408         if (bits == inherit)
 409                 ost << _("Default") << ", ";
 410         if (!params || (language() != params->language))
 411                 ost << _("Language: ") << _(language()->display()) << ", ";
 412         if (number() != OFF)
 413                 ost << _("  Number ") << _(GUIMiscNames[number()]);
 414
 415         string buf(ost.str().c_str());
 416         buf = strip(buf, ' ');
 417         buf = strip(buf, ',');
 418         return buf;
 419 }
 420
 421
 422 // Set family according to lyx format string
 423 LyXFont & LyXFont::setLyXFamily(string const & fam)
 424 {
 425         string s = lowercase(fam);
 426
 427         int i = 0;
 428         while (s != LyXFamilyNames[i] && LyXFamilyNames[i] != "error") ++i;
 429         if (s == LyXFamilyNames[i]) {
 430                 setFamily(LyXFont::FONT_FAMILY(i));
 431         } else
 432                 lyxerr << "LyXFont::setLyXFamily: Unknown family `"
 433                        << s << '\'' << endl;
 434         return *this;
 435 }
 436
 437
 438 // Set series according to lyx format string
 439 LyXFont & LyXFont::setLyXSeries(string const & ser)
 440 {
 441         string s = lowercase(ser);
 442
 443         int i = 0;
 444         while (s != LyXSeriesNames[i] && LyXSeriesNames[i] != "error") ++i;
 445         if (s == LyXSeriesNames[i]) {
 446                 setSeries(LyXFont::FONT_SERIES(i));
 447         } else
 448                 lyxerr << "LyXFont::setLyXSeries: Unknown series `"
 449                        << s << '\'' << endl;
 450         return *this;
 451 }
 452
 453
 454 // Set shape according to lyx format string
 455 LyXFont & LyXFont::setLyXShape(string const & sha)
 456 {
 457         string s = lowercase(sha);
 458
 459         int i = 0;
 460         while (s != LyXShapeNames[i] && LyXShapeNames[i] != "error") ++i;
 461         if (s == LyXShapeNames[i]) {
 462                 setShape(LyXFont::FONT_SHAPE(i));
 463         } else
 464                 lyxerr << "LyXFont::setLyXShape: Unknown shape `"
 465                        << s << '\'' << endl;
 466         return *this;
 467 }
 468
 469
 470 // Set size according to lyx format string
 471 LyXFont & LyXFont::setLyXSize(string const & siz)
 472 {
 473         string s = lowercase(siz);
 474         int i = 0;
 475         while (s != LyXSizeNames[i] && LyXSizeNames[i] != "error") ++i;
 476         if (s == LyXSizeNames[i]) {
 477                 setSize(LyXFont::FONT_SIZE(i));
 478         } else
 479                 lyxerr << "LyXFont::setLyXSize: Unknown size `"
 480                        << s << '\'' << endl;
 481         return *this;
 482 }
 483
 484
 485 // Set size according to lyx format string
 486 LyXFont::FONT_MISC_STATE LyXFont::setLyXMisc(string const & siz)
 487 {
 488         string s = lowercase(siz);
 489         int i = 0;
 490         while (s != LyXMiscNames[i] && LyXMiscNames[i] != "error") ++i;
 491         if (s == LyXMiscNames[i])
 492                 return FONT_MISC_STATE(i);
 493         lyxerr << "LyXFont::setLyXMisc: Unknown misc flag `"
 494                << s << '\'' << endl;
 495         return OFF;
 496 }
 497
 498
 499 /// Sets color after LyX text format
 500 LyXFont & LyXFont::setLyXColor(string const & col)
 501 {
 502         setColor(lcolor.getFromLyXName(col));
 503         return *this;
 504 }
 505
 506
 507 // Returns size in latex format
 508 string const LyXFont::latexSize() const
 509 {
 510         return LaTeXSizeNames[size()];
 511 }
 512
 513
 514 // Read a font definition from given file in lyx format
 515 // Used for layouts
 516 LyXFont & LyXFont::lyxRead(LyXLex & lex)
 517 {
 518         bool error = false;
 519         bool finished = false;
 520         while (!finished && lex.IsOK() && !error) {
 521                 lex.next();
 522                 string tok = lowercase(lex.GetString());
 523
 524                 if (tok.empty()) {
 525                         continue;
 526                 } else if (tok == "endfont") {
 527                         finished = true;
 528                 } else if (tok == "family") {
 529                         lex.next();
 530                         string tok = lex.GetString();
 531                         setLyXFamily(tok);
 532                 } else if (tok == "series") {
 533                         lex.next();
 534                         string tok = lex.GetString();
 535                         setLyXSeries(tok);
 536                 } else if (tok == "shape") {
 537                         lex.next();
 538                         string tok = lex.GetString();
 539                         setLyXShape(tok);
 540                 } else if (tok == "size") {
 541                         lex.next();
 542                         string tok = lex.GetString();
 543                         setLyXSize(tok);
 544                 } else if (tok == "latex") {
 545                         lex.next();
 546                         string tok = lowercase(lex.GetString());
 547
 548                         if (tok == "no_latex") {
 549                                 setLatex(OFF);
 550                         } else if (tok == "latex") {
 551                                 setLatex(ON);
 552                         } else {
 553                                 lex.printError("Illegal LaTeX type`$$Token'");
 554                         }
 555                 } else if (tok == "misc") {
 556                         lex.next();
 557                         string tok = lowercase(lex.GetString());
 558
 559                         if (tok == "no_bar") {
 560                                 setUnderbar(OFF);
 561                         } else if (tok == "no_emph") {
 562                                 setEmph(OFF);
 563                         } else if (tok == "no_noun") {
 564                                 setNoun(OFF);
 565                         } else if (tok == "emph") {
 566                                 setEmph(ON);
 567                         } else if (tok == "underbar") {
 568                                 setUnderbar(ON);
 569                         } else if (tok == "noun") {
 570                                 setNoun(ON);
 571                         } else {
 572                                 lex.printError("Illegal misc type `$$Token´");
 573                         }
 574                 } else if (tok == "color") {
 575                         lex.next();
 576                         string tok = lex.GetString();
 577                         setLyXColor(tok);
 578                 } else {
 579                         lex.printError("Unknown tag `$$Token'");
 580                         error = true;
 581                 }
 582         }
 583         return *this;
 584 }
 585
 586
 587 /// Writes the changes from this font to orgfont in .lyx format in file
 588 void LyXFont::lyxWriteChanges(LyXFont const & orgfont, ostream & os) const
 589 {
 590         os << "\n";
 591         if (orgfont.family() != family()) {
 592                 os << "\\family " << LyXFamilyNames[family()] << " \n";
 593         }
 594         if (orgfont.series() != series()) {
 595                 os << "\\series " << LyXSeriesNames[series()] << " \n";
 596         }
 597         if (orgfont.shape() != shape()) {
 598                 os << "\\shape " << LyXShapeNames[shape()] << " \n";
 599         }
 600         if (orgfont.size() != size()) {
 601                 os << "\\size " << LyXSizeNames[size()] << " \n";
 602         }
 603         if (orgfont.emph() != emph()) {
 604                 os << "\\emph " << LyXMiscNames[emph()] << " \n";
 605         }
 606         if (orgfont.number() != number()) {
 607                 os << "\\numeric " << LyXMiscNames[number()] << " \n";
 608         }
 609         if (orgfont.underbar() != underbar()) {
 610                 // This is only for backwards compatibility
 611                 switch (underbar()) {
 612                 case OFF:       os << "\\bar no \n"; break;
 613                 case ON:        os << "\\bar under \n"; break;
 614                 case TOGGLE:    lyxerr << "LyXFont::lyxWriteFontChanges: "
 615                                         "TOGGLE should not appear here!"
 616                                        << endl;
 617                 break;
 618                 case INHERIT:   os << "\\bar default \n"; break;
 619                 case IGNORE:    lyxerr << "LyXFont::lyxWriteFontChanges: "
 620                                         "IGNORE should not appear here!"
 621                                        << endl;
 622                 break;
 623                 }
 624         }
 625         if (orgfont.noun() != noun()) {
 626                 os << "\\noun " << LyXMiscNames[noun()] << " \n";
 627         }
 628         if (orgfont.latex() != latex()) {
 629                 // This is only for backwards compatibility
 630                 switch (latex()) {
 631                 case OFF:       os << "\\latex no_latex \n"; break;
 632                 case ON:        os << "\\latex latex \n"; break;
 633                 case TOGGLE:    lyxerr << "LyXFont::lyxWriteFontChanges: "
 634                                         "TOGGLE should not appear here!"
 635                                        << endl;
 636                 break;
 637                 case INHERIT:   os << "\\latex default \n"; break;
 638                 case IGNORE:    lyxerr << "LyXFont::lyxWriteFontChanges: "
 639                                         "IGNORE should not appear here!"
 640                                        << endl;
 641                 break;
 642                 }
 643         }
 644         if (orgfont.color() != color()) {
 645                 // To make us file compatible with older
 646                 // lyx versions we emit "default" instead
 647                 // of "inherit"
 648                 string col_str(lcolor.getLyXName(color()));
 649                 if (col_str == "inherit") col_str = "default";
 650                 os << "\\color " << col_str << "\n";
 651         }
 652         if (orgfont.language() != language()) {
 653                 if (language())
 654                         os << "\\lang " << language()->lang() << "\n";
 655                 else
 656                         os << "\\lang unknown\n";
 657         }
 658 }
 659
 660
 661 /// Writes the head of the LaTeX needed to impose this font
 662 // Returns number of chars written.
 663 int LyXFont::latexWriteStartChanges(ostream & os, LyXFont const & base,
 664                                     LyXFont const & prev) const
 665 {
 666         int count = 0;
 667         bool env = false;
 668
 669         if (language()->babel() != base.language()->babel() &&
 670             language()->babel() != prev.language()->babel()) {
 671                 if (isRightToLeft() != prev.isRightToLeft()) {
 672                         if (isRightToLeft()) {
 673                                 os << "\\R{";
 674                                 count += 3;
 675                         } else {
 676                                 os << "\\L{";
 677                                 count += 3;
 678                         }
 679                 } else {
 680                         string tmp = '{' +
 681                                 subst(lyxrc.language_command_begin,
 682                                       "$$lang", language()->babel());
 683                         os << tmp;
 684                         count += tmp.length();
 685                 }
 686         }
 687
 688         if (number() == ON && prev.number() != ON &&
 689             language()->lang() == "hebrew") {
 690                 os << "{\\beginL ";
 691                 count += 9;
 692         }
 693
 694         LyXFont f = *this;
 695         f.reduce(base);
 696
 697         if (f.family() != INHERIT_FAMILY) {
 698                 os << '\\'
 699                    << LaTeXFamilyNames[f.family()]
 700                    << '{';
 701                 count += strlen(LaTeXFamilyNames[f.family()]) + 2;
 702                 env = true; //We have opened a new environment
 703         }
 704         if (f.series() != INHERIT_SERIES) {
 705                 os << '\\'
 706                    << LaTeXSeriesNames[f.series()]
 707                    << '{';
 708                 count += strlen(LaTeXSeriesNames[f.series()]) + 2;
 709                 env = true; //We have opened a new environment
 710         }
 711         if (f.shape() != INHERIT_SHAPE) {
 712                 os << '\\'
 713                    << LaTeXShapeNames[f.shape()]
 714                    << '{';
 715                 count += strlen(LaTeXShapeNames[f.shape()]) + 2;
 716                 env = true; //We have opened a new environment
 717         }
 718         if (f.color() != LColor::inherit && f.color() != LColor::ignore) {
 719                 os << "\\textcolor{"
 720                    << lcolor.getLaTeXName(f.color())
 721                    << "}{";
 722                 count += lcolor.getLaTeXName(f.color()).length() + 13;
 723                 env = true; //We have opened a new environment
 724         }
 725         if (f.emph() == ON) {
 726                 os << "\\emph{";
 727                 count += 6;
 728                 env = true; //We have opened a new environment
 729         }
 730         if (f.underbar() == ON) {
 731                 os << "\\underbar{";
 732                 count += 10;
 733                 env = true; //We have opened a new environment
 734         }
 735         // \noun{} is a LyX special macro
 736         if (f.noun() == ON) {
 737                 os << "\\noun{";
 738                 count += 8;
 739                 env = true; //We have opened a new environment
 740         }
 741         if (f.size() != INHERIT_SIZE) {
 742                 // If we didn't open an environment above, we open one here
 743                 if (!env) {
 744                         os << '{';
 745                         ++count;
 746                 }
 747                 os << '\\'
 748                    << LaTeXSizeNames[f.size()]
 749                    << ' ';
 750                 count += strlen(LaTeXSizeNames[f.size()]) + 2;
 751         }
 752         return count;
 753 }
 754
 755
 756 /// Writes ending block of LaTeX needed to close use of this font
 757 // Returns number of chars written
 758 // This one corresponds to latexWriteStartChanges(). (Asger)
 759 int LyXFont::latexWriteEndChanges(ostream & os, LyXFont const & base,
 760                                   LyXFont const & next) const
 761 {
 762         int count = 0;
 763         bool env = false;
 764
 765         LyXFont f = *this; // why do you need this?
 766         f.reduce(base); // why isn't this just "reduce(base);" (Lgb)
 767         // Because this function is const. Everything breaks if this
 768         // method changes the font it represents. There is no speed penalty
 769         // by using the temporary. (Asger)
 770
 771
 772         if (f.family() != INHERIT_FAMILY) {
 773                 os << '}';
 774                 ++count;
 775                 env = true; // Size change need not bother about closing env.
 776         }
 777         if (f.series() != INHERIT_SERIES) {
 778                 os << '}';
 779                 ++count;
 780                 env = true; // Size change need not bother about closing env.
 781         }
 782         if (f.shape() != INHERIT_SHAPE) {
 783                 os << '}';
 784                 ++count;
 785                 env = true; // Size change need not bother about closing env.
 786         }
 787         if (f.color() != LColor::inherit && f.color() != LColor::ignore) {
 788                 os << '}';
 789                 ++count;
 790                 env = true; // Size change need not bother about closing env.
 791         }
 792         if (f.emph() == ON) {
 793                 os << '}';
 794                 ++count;
 795                 env = true; // Size change need not bother about closing env.
 796         }
 797         if (f.underbar() == ON) {
 798                 os << '}';
 799                 ++count;
 800                 env = true; // Size change need not bother about closing env.
 801         }
 802         if (f.noun() == ON) {
 803                 os << '}';
 804                 ++count;
 805                 env = true; // Size change need not bother about closing env.
 806         }
 807         if (f.size() != INHERIT_SIZE) {
 808                 // We only have to close if only size changed
 809                 if (!env) {
 810                         os << '}';
 811                         ++count;
 812                 }
 813         }
 814
 815         if (number() == ON && next.number() != ON &&
 816             language()->lang() == "hebrew") {
 817                 os << "\\endL}";
 818                 count += 6;
 819         }
 820
 821         if (language() != base.language() && language() != next.language()) {
 822                 os << "}";
 823                 ++count;
 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 }