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
  28 using std::ostream;
  29 using std::endl;
  30
  31 //
  32 // Names for the GUI
  33 //
  34
  35 static
  36 char const * GUIFamilyNames[6] =
  37 { N_("Roman"), N_("Sans serif"), N_("Typewriter"), N_("Symbol"), N_("Inherit"),
  38   N_("Ignore") };
  39
  40 static
  41 char const * GUISeriesNames[4] =
  42 { N_("Medium"), N_("Bold"), N_("Inherit"), N_("Ignore") };
  43
  44 static
  45 char const * GUIShapeNames[6] =
  46 { N_("Upright"), N_("Italic"), N_("Slanted"), N_("Smallcaps"), N_("Inherit"),
  47   N_("Ignore") };
  48
  49 static
  50 char const * GUISizeNames[14] =
  51 { N_("Tiny"), N_("Smallest"), N_("Smaller"), N_("Small"), N_("Normal"), N_("Large"),
  52   N_("Larger"), N_("Largest"), N_("Huge"), N_("Huger"), N_("Increase"), N_("Decrease"),
  53   N_("Inherit"), N_("Ignore") };
  54
  55 static
  56 char const * GUIMiscNames[5] =
  57 { N_("Off"), N_("On"), N_("Toggle"), N_("Inherit"), N_("Ignore") };
  58
  59
  60 //
  61 // Strings used to read and write .lyx format files
  62 //
  63 static
  64 char const * LyXFamilyNames[6] =
  65 { "roman", "sans", "typewriter", "symbol", "default", "error" };
  66
  67 static
  68 char const * LyXSeriesNames[4] =
  69 { "medium", "bold", "default", "error" };
  70
  71 static
  72 char const * LyXShapeNames[6] =
  73 { "up", "italic", "slanted", "smallcaps", "default", "error" };
  74
  75 static
  76 char const * LyXSizeNames[14] =
  77 { "tiny", "scriptsize", "footnotesize", "small", "normal", "large",
  78   "larger", "largest", "huge", "giant",
  79   "increase-error", "decrease-error", "default", "error" };
  80
  81 static
  82 char const * LyXMiscNames[5] =
  83 { "off", "on", "toggle", "default", "error" };
  84
  85 //
  86 // Strings used to write LaTeX files
  87 //
  88 static
  89 char const * LaTeXFamilyNames[6] =
  90 { "textrm", "textsf", "texttt", "error1", "error2", "error3" };
  91
  92 static
  93 char const * LaTeXSeriesNames[4] =
  94 { "textmd", "textbf", "error4", "error5" };
  95
  96 static
  97 char const * LaTeXShapeNames[6] =
  98 { "textup", "textit", "textsl", "textsc", "error6", "error7" };
  99
 100 static
 101 char const * LaTeXSizeNames[14] =
 102 { "tiny", "scriptsize", "footnotesize", "small", "normalsize", "large",
 103   "Large", "LARGE", "huge", "Huge", "error8", "error9", "error10", "error11" };
 104
 105
 106 LyXFont::FontBits LyXFont::sane = {
 107         ROMAN_FAMILY,
 108         MEDIUM_SERIES,
 109         UP_SHAPE,
 110         SIZE_NORMAL,
 111         LColor::none,
 112         OFF,
 113         OFF,
 114         OFF,
 115         OFF };
 116
 117 LyXFont::FontBits LyXFont::inherit = {
 118         INHERIT_FAMILY,
 119         INHERIT_SERIES,
 120         INHERIT_SHAPE,
 121         INHERIT_SIZE,
 122         LColor::inherit,
 123         INHERIT,
 124         INHERIT,
 125         INHERIT,
 126         INHERIT };
 127
 128 LyXFont::FontBits LyXFont::ignore = {
 129         IGNORE_FAMILY,
 130         IGNORE_SERIES,
 131         IGNORE_SHAPE,
 132         IGNORE_SIZE,
 133         LColor::ignore,
 134         IGNORE,
 135         IGNORE,
 136         IGNORE,
 137         IGNORE };
 138
 139
 140 bool LyXFont::FontBits::operator==(LyXFont::FontBits const & fb1) const
 141 {
 142                         return fb1.family == family &&
 143                                 fb1.series == series &&
 144                                 fb1.shape == shape &&
 145                                 fb1.size == size &&
 146                                 fb1.color == color &&
 147                                 fb1.emph == emph &&
 148                                 fb1.underbar == underbar &&
 149                                 fb1.noun == noun &&
 150                                 fb1.latex == latex;
 151 }
 152
 153
 154 bool LyXFont::FontBits::operator!=(LyXFont::FontBits const & fb1) const
 155 {
 156         return !(fb1 == *this);
 157 }
 158
 159
 160 /// Decreases font size by one
 161 LyXFont & LyXFont::decSize()
 162 {
 163         switch (size()) {
 164         case SIZE_HUGER:        setSize(SIZE_HUGE);     break;
 165         case SIZE_HUGE:         setSize(SIZE_LARGEST);  break;
 166         case SIZE_LARGEST:      setSize(SIZE_LARGER);   break;
 167         case SIZE_LARGER:       setSize(SIZE_LARGE);    break;
 168         case SIZE_LARGE:        setSize(SIZE_NORMAL);   break;
 169         case SIZE_NORMAL:       setSize(SIZE_SMALL);    break;
 170         case SIZE_SMALL:        setSize(SIZE_FOOTNOTE); break;
 171         case SIZE_FOOTNOTE:     setSize(SIZE_SCRIPT);   break;
 172         case SIZE_SCRIPT:       setSize(SIZE_TINY);     break;
 173         case SIZE_TINY:         break;
 174         case INCREASE_SIZE:
 175                 lyxerr << "Can't LyXFont::decSize on INCREASE_SIZE" << endl;
 176                 break;
 177         case DECREASE_SIZE:
 178                 lyxerr <<"Can't LyXFont::decSize on DECREASE_SIZE" << endl;
 179                 break;
 180         case INHERIT_SIZE:
 181                 lyxerr <<"Can't LyXFont::decSize on INHERIT_SIZE" << endl;
 182                 break;
 183         case IGNORE_SIZE:
 184                 lyxerr <<"Can't LyXFont::decSize on IGNORE_SIZE" << endl;
 185                 break;
 186         }
 187         return *this;
 188 }
 189
 190
 191 /// Increases font size by one
 192 LyXFont & LyXFont::incSize()
 193 {
 194         switch(size()) {
 195         case SIZE_HUGER:        break;
 196         case SIZE_HUGE:         setSize(SIZE_HUGER);    break;
 197         case SIZE_LARGEST:      setSize(SIZE_HUGE);     break;
 198         case SIZE_LARGER:       setSize(SIZE_LARGEST);  break;
 199         case SIZE_LARGE:        setSize(SIZE_LARGER);   break;
 200         case SIZE_NORMAL:       setSize(SIZE_LARGE);    break;
 201         case SIZE_SMALL:        setSize(SIZE_NORMAL);   break;
 202         case SIZE_FOOTNOTE:     setSize(SIZE_SMALL);    break;
 203         case SIZE_SCRIPT:       setSize(SIZE_FOOTNOTE); break;
 204         case SIZE_TINY:         setSize(SIZE_SCRIPT);   break;
 205         case INCREASE_SIZE:
 206                 lyxerr <<"Can't LyXFont::incSize on INCREASE_SIZE" << endl;
 207                 break;
 208         case DECREASE_SIZE:
 209                 lyxerr <<"Can't LyXFont::incSize on DECREASE_SIZE" << endl;
 210                 break;
 211         case INHERIT_SIZE:
 212                 lyxerr <<"Can't LyXFont::incSize on INHERIT_SIZE" << endl;
 213                 break;
 214         case IGNORE_SIZE:
 215                 lyxerr <<"Can't LyXFont::incSize on IGNORE_SIZE" << endl;
 216                 break;
 217         }
 218         return *this;
 219 }
 220
 221
 222 /// Updates a misc setting according to request
 223 LyXFont::FONT_MISC_STATE LyXFont::setMisc(FONT_MISC_STATE newfont,
 224                                           FONT_MISC_STATE org)
 225 {
 226         if (newfont == TOGGLE) {
 227                 if (org == ON)
 228                         return OFF;
 229                 else if (org == OFF)
 230                         return ON;
 231                 else {
 232                         lyxerr <<"LyXFont::setMisc: Need state"
 233                                 " ON or OFF to toggle. Setting to ON" << endl;
 234                         return ON;
 235                 }
 236         } else if (newfont == IGNORE)
 237                 return org;
 238         else
 239                 return newfont;
 240 }
 241
 242
 243 /// Updates font settings according to request
 244 void LyXFont::update(LyXFont const & newfont,
 245                      Language const * document_language, bool toggleall)
 246 {
 247         if(newfont.family() == family() && toggleall)
 248                 setFamily(INHERIT_FAMILY); // toggle 'back'
 249         else if (newfont.family() != IGNORE_FAMILY)
 250                 setFamily(newfont.family());
 251         // else it's IGNORE_SHAPE
 252
 253         // "Old" behaviour: "Setting" bold will toggle bold on/off.
 254         switch (newfont.series()) {
 255         case BOLD_SERIES:
 256                 // We toggle...
 257                 if (series() == BOLD_SERIES && toggleall)
 258                         setSeries(MEDIUM_SERIES);
 259                 else
 260                         setSeries(BOLD_SERIES);
 261                 break;
 262         case MEDIUM_SERIES:
 263         case INHERIT_SERIES:
 264                 setSeries(newfont.series());
 265                 break;
 266         case IGNORE_SERIES:
 267                 break;
 268         }
 269
 270         if(newfont.shape() == shape() && toggleall)
 271                 setShape(INHERIT_SHAPE); // toggle 'back'
 272         else if (newfont.shape() != IGNORE_SHAPE)
 273                 setShape(newfont.shape());
 274         // else it's IGNORE_SHAPE
 275
 276         if (newfont.size() != IGNORE_SIZE) {
 277                 if (newfont.size() == INCREASE_SIZE)
 278                         incSize();
 279                 else if (newfont.size() == DECREASE_SIZE)
 280                         decSize();
 281                 else if (newfont.size() == size() && toggleall)
 282                         setSize(INHERIT_SIZE); // toggle 'back'
 283                 else
 284                         setSize(newfont.size());
 285         }
 286
 287         setEmph(setMisc(newfont.emph(), emph()));
 288         setUnderbar(setMisc(newfont.underbar(), underbar()));
 289         setNoun(setMisc(newfont.noun(), noun()));
 290         setLatex(setMisc(newfont.latex(), latex()));
 291
 292         if (newfont.language() != ignore_language)
 293                 if (language() == newfont.language())
 294                         if (language() == document_language)
 295                                 setLanguage(default_language);
 296                         else
 297                                 setLanguage(document_language);
 298                 else
 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 LyXFont::stateText() const
 385 {
 386 #ifdef HAVE_SSTREAM
 387         std::ostringstream ost;
 388 #else
 389         char str[1024];
 390         ostrstream ost(str, 1024);
 391 #endif
 392         if (family() != INHERIT_FAMILY)
 393                 ost << _(GUIFamilyNames[family()]) << ", ";
 394         if (series() != INHERIT_SERIES)
 395                 ost << _(GUISeriesNames[series()]) << ", ";
 396         if (shape() != INHERIT_SHAPE)
 397                 ost << _(GUIShapeNames[shape()]) << ", ";
 398         if (size() != INHERIT_SIZE)
 399                 ost << _(GUISizeNames[size()]) << ", ";
 400         if (color() != LColor::inherit)
 401                 ost << lcolor.getGUIName(color()) << ", ";
 402         if (emph() != INHERIT)
 403                 ost << _("Emphasis ")
 404                     << _(GUIMiscNames[emph()]) << ", ";
 405         if (underbar() != INHERIT)
 406                 ost << _("Underline ")
 407                     << _(GUIMiscNames[underbar()]) << ", ";
 408         if (noun() != INHERIT)
 409                 ost << _("Noun ") << _(GUIMiscNames[noun()]) << ", ";
 410         if (latex() != INHERIT)
 411                 ost << _("Latex ") << _(GUIMiscNames[latex()]) << ", ";
 412         //if (buf.empty())
 413         //      ost << _("Default");
 414         unsigned int opos = ost.tellp();
 415         lyxerr << "Opos: " << opos << endl;
 416         if (opos == 0)
 417                 ost << _("Default") << ", ";
 418         ost << _("Language: ") << _(language()->display.c_str());
 419 #ifdef HAVE_SSTREAM
 420         string buf(ost.str().c_str());
 421 #else
 422         ost << '\0';
 423         string buf(ost.str());
 424 #endif
 425         buf = strip(buf, ' ');
 426         buf = strip(buf, ',');
 427         return buf;
 428 }
 429
 430
 431 // Set family according to lyx format string
 432 LyXFont & LyXFont::setLyXFamily(string const & fam)
 433 {
 434         string s = lowercase(fam);
 435
 436         int i = 0;
 437         while (s != LyXFamilyNames[i] && LyXFamilyNames[i] != "error") ++i;
 438         if (s == LyXFamilyNames[i]) {
 439                 setFamily(LyXFont::FONT_FAMILY(i));
 440         } else
 441                 lyxerr << "LyXFont::setLyXFamily: Unknown family `"
 442                        << s << '\'' << endl;
 443         return *this;
 444 }
 445
 446
 447 // Set series according to lyx format string
 448 LyXFont & LyXFont::setLyXSeries(string const & ser)
 449 {
 450         string s = lowercase(ser);
 451
 452         int i = 0;
 453         while (s != LyXSeriesNames[i] && LyXSeriesNames[i] != "error") ++i;
 454         if (s == LyXSeriesNames[i]) {
 455                 setSeries(LyXFont::FONT_SERIES(i));
 456         } else
 457                 lyxerr << "LyXFont::setLyXSeries: Unknown series `"
 458                        << s << '\'' << endl;
 459         return *this;
 460 }
 461
 462
 463 // Set shape according to lyx format string
 464 LyXFont & LyXFont::setLyXShape(string const & sha)
 465 {
 466         string s = lowercase(sha);
 467
 468         int i = 0;
 469         while (s != LyXShapeNames[i] && LyXShapeNames[i] != "error") ++i;
 470         if (s == LyXShapeNames[i]) {
 471                 setShape(LyXFont::FONT_SHAPE(i));
 472         } else
 473                 lyxerr << "LyXFont::setLyXShape: Unknown shape `"
 474                        << s << '\'' << endl;
 475         return *this;
 476 }
 477
 478
 479 // Set size according to lyx format string
 480 LyXFont & LyXFont::setLyXSize(string const & siz)
 481 {
 482         string s = lowercase(siz);
 483         int i = 0;
 484         while (s != LyXSizeNames[i] && LyXSizeNames[i] != "error") ++i;
 485         if (s == LyXSizeNames[i]) {
 486                 setSize(LyXFont::FONT_SIZE(i));
 487         } else
 488                 lyxerr << "LyXFont::setLyXSize: Unknown size `"
 489                        << s << '\'' << endl;
 490         return *this;
 491 }
 492
 493
 494 // Set size according to lyx format string
 495 LyXFont::FONT_MISC_STATE LyXFont::setLyXMisc(string const & siz)
 496 {
 497         string s = lowercase(siz);
 498         int i = 0;
 499         while (s != LyXMiscNames[i] && LyXMiscNames[i] != "error") ++i;
 500         if (s == LyXMiscNames[i])
 501                 return FONT_MISC_STATE(i);
 502         lyxerr << "LyXFont::setLyXMisc: Unknown misc flag `"
 503                << s << '\'' << endl;
 504         return OFF;
 505 }
 506
 507
 508 /// Sets color after LyX text format
 509 LyXFont & LyXFont::setLyXColor(string const & col)
 510 {
 511         setColor(lcolor.getFromLyXName(col));
 512         return *this;
 513 }
 514
 515
 516 /// Sets size after GUI name
 517 LyXFont & LyXFont::setGUISize(string const & siz)
 518 {
 519 #warning this might be wrong.
 520         /// ??????
 521         // this is how it was how it was done in the lyx repository...
 522         // but this does not make sense.
 523         setColor(lcolor.getFromGUIName(siz));
 524         return *this;
 525 }
 526
 527
 528 // Returns size in latex format
 529 string LyXFont::latexSize() const
 530 {
 531         return LaTeXSizeNames[size()];
 532 }
 533
 534
 535 // Read a font definition from given file in lyx format
 536 // Used for layouts
 537 LyXFont & LyXFont::lyxRead(LyXLex & lex)
 538 {
 539         bool error = false;
 540         bool finished = false;
 541         while (!finished && lex.IsOK() && !error) {
 542                 lex.next();
 543                 string tok = lowercase(lex.GetString());
 544
 545                 if (tok.empty()) {
 546                         continue;
 547                 } else if (tok == "endfont") {
 548                         finished = true;
 549                 } else if (tok == "family") {
 550                         lex.next();
 551                         string tok = lex.GetString();
 552                         setLyXFamily(tok);
 553                 } else if (tok == "series") {
 554                         lex.next();
 555                         string tok = lex.GetString();
 556                         setLyXSeries(tok);
 557                 } else if (tok == "shape") {
 558                         lex.next();
 559                         string tok = lex.GetString();
 560                         setLyXShape(tok);
 561                 } else if (tok == "size") {
 562                         lex.next();
 563                         string tok = lex.GetString();
 564                         setLyXSize(tok);
 565                 } else if (tok == "latex") {
 566                         lex.next();
 567                         string tok = lowercase(lex.GetString());
 568
 569                         if (tok == "no_latex") {
 570                                 setLatex(OFF);
 571                         } else if (tok == "latex") {
 572                                 setLatex(ON);
 573                         } else {
 574                                 lex.printError("Illegal LaTeX type`$$Token'");
 575                         }
 576                 } else if (tok == "misc") {
 577                         lex.next();
 578                         string tok = lowercase(lex.GetString());
 579
 580                         if (tok == "no_bar") {
 581                                 setUnderbar(OFF);
 582                         } else if (tok == "no_emph") {
 583                                 setEmph(OFF);
 584                         } else if (tok == "no_noun") {
 585                                 setNoun(OFF);
 586                         } else if (tok == "emph") {
 587                                 setEmph(ON);
 588                         } else if (tok == "underbar") {
 589                                 setUnderbar(ON);
 590                         } else if (tok == "noun") {
 591                                 setNoun(ON);
 592                         } else {
 593                                 lex.printError("Illegal misc type `$$Token´");
 594                         }
 595                 } else if (tok == "color") {
 596                         lex.next();
 597                         string tok = lex.GetString();
 598                         setLyXColor(tok);
 599                 } else {
 600                         lex.printError("Unknown tag `$$Token'");
 601                         error = true;
 602                 }
 603         }
 604         return *this;
 605 }
 606
 607
 608 /// Writes the changes from this font to orgfont in .lyx format in file
 609 void LyXFont::lyxWriteChanges(LyXFont const & orgfont, ostream & os) const
 610 {
 611         os << "\n";
 612         if (orgfont.family() != family()) {
 613                 os << "\\family " << LyXFamilyNames[family()] << " \n";
 614         }
 615         if (orgfont.series() != series()) {
 616                 os << "\\series " << LyXSeriesNames[series()] << " \n";
 617         }
 618         if (orgfont.shape() != shape()) {
 619                 os << "\\shape " << LyXShapeNames[shape()] << " \n";
 620         }
 621         if (orgfont.size() != size()) {
 622                 os << "\\size " << LyXSizeNames[size()] << " \n";
 623         }
 624         if (orgfont.emph() != emph()) {
 625                 os << "\\emph " << LyXMiscNames[emph()] << " \n";
 626         }
 627         if (orgfont.underbar() != underbar()) {
 628                 // This is only for backwards compatibility
 629                 switch (underbar()) {
 630                 case OFF:       os << "\\bar no \n"; break;
 631                 case ON:        os << "\\bar under \n"; break;
 632                 case TOGGLE:    lyxerr << "LyXFont::lyxWriteFontChanges: "
 633                                         "TOGGLE should not appear here!"
 634                                        << endl;
 635                 break;
 636                 case INHERIT:   os << "\\bar default \n"; break;
 637                 case IGNORE:    lyxerr << "LyXFont::lyxWriteFontChanges: "
 638                                         "IGNORE should not appear here!"
 639                                        << endl;
 640                 break;
 641                 }
 642         }
 643         if (orgfont.noun() != noun()) {
 644                 os << "\\noun " << LyXMiscNames[noun()] << " \n";
 645         }
 646         if (orgfont.latex() != latex()) {
 647                 // This is only for backwards compatibility
 648                 switch (latex()) {
 649                 case OFF:       os << "\\latex no_latex \n"; break;
 650                 case ON:        os << "\\latex latex \n"; break;
 651                 case TOGGLE:    lyxerr << "LyXFont::lyxWriteFontChanges: "
 652                                         "TOGGLE should not appear here!"
 653                                        << endl;
 654                 break;
 655                 case INHERIT:   os << "\\latex default \n"; break;
 656                 case IGNORE:    lyxerr << "LyXFont::lyxWriteFontChanges: "
 657                                         "IGNORE should not appear here!"
 658                                        << endl;
 659                 break;
 660                 }
 661         }
 662         if (orgfont.color() != color()) {
 663                 os << "\\color " << lcolor.getLyXName(color()) << "\n";
 664         }
 665         if (orgfont.language() != language()) {
 666                 if (language())
 667                         os << "\\lang " << language()->lang << "\n";
 668                 else
 669                         os << "\\lang unknown\n";
 670         }
 671 }
 672
 673
 674 /// Writes the head of the LaTeX needed to impose this font
 675 // Returns number of chars written.
 676 int LyXFont::latexWriteStartChanges(ostream & os, LyXFont const & base,
 677                                     LyXFont const & prev) const
 678 {
 679         int count = 0;
 680         bool env = false;
 681
 682         if (language() != base.language() && language() != prev.language()) {
 683                 if (isRightToLeft() != prev.isRightToLeft()) {
 684                         if (isRightToLeft()) {
 685                                 os << "\\R{";
 686                                 count += 3;
 687                                 env = true; //We have opened a new environment
 688                         } else {
 689                                 os << "\\L{";
 690                                 count += 3;
 691                                 env = true; //We have opened a new environment
 692                         }
 693                 } else {
 694                         string tmp = '{' +
 695                                 subst(lyxrc.language_command_begin,
 696                                       "$$lang", language()->lang);
 697                         os << tmp;
 698                         count += tmp.length();
 699                         env = true; //We have opened a new environment
 700                 }
 701         }
 702
 703         LyXFont f = *this;
 704         f.reduce(base);
 705
 706         if (f.family() != INHERIT_FAMILY) {
 707                 os << '\\'
 708                    << LaTeXFamilyNames[f.family()]
 709                    << '{';
 710                 count += strlen(LaTeXFamilyNames[f.family()]) + 2;
 711                 env = true; //We have opened a new environment
 712         }
 713         if (f.series() != INHERIT_SERIES) {
 714                 os << '\\'
 715                    << LaTeXSeriesNames[f.series()]
 716                    << '{';
 717                 count += strlen(LaTeXSeriesNames[f.series()]) + 2;
 718                 env = true; //We have opened a new environment
 719         }
 720         if (f.shape() != INHERIT_SHAPE) {
 721                 os << '\\'
 722                    << LaTeXShapeNames[f.shape()]
 723                    << '{';
 724                 count += strlen(LaTeXShapeNames[f.shape()]) + 2;
 725                 env = true; //We have opened a new environment
 726         }
 727         if (f.color() != LColor::inherit) {
 728                 os << "\\textcolor{"
 729                    << lcolor.getLaTeXName(f.color())
 730                    << "}{";
 731                 count += lcolor.getLaTeXName(f.color()).length() + 13;
 732                 env = true; //We have opened a new environment
 733         }
 734         if (f.emph() == ON) {
 735                 os << "\\emph{";
 736                 count += 6;
 737                 env = true; //We have opened a new environment
 738         }
 739         if (f.underbar() == ON) {
 740                 os << "\\underbar{";
 741                 count += 10;
 742                 env = true; //We have opened a new environment
 743         }
 744         // \noun{} is a LyX special macro
 745         if (f.noun() == ON) {
 746                 os << "\\noun{";
 747                 count += 8;
 748                 env = true; //We have opened a new environment
 749         }
 750         if (f.size() != INHERIT_SIZE) {
 751                 // If we didn't open an environment above, we open one here
 752                 if (!env) {
 753                         os << '{';
 754                         ++count;
 755                 }
 756                 os << '\\'
 757                    << LaTeXSizeNames[f.size()]
 758                    << ' ';
 759                 count += strlen(LaTeXSizeNames[f.size()]) + 2;
 760         }
 761         return count;
 762 }
 763
 764
 765 /// Writes ending block of LaTeX needed to close use of this font
 766 // Returns number of chars written
 767 // This one corresponds to latexWriteStartChanges(). (Asger)
 768 int LyXFont::latexWriteEndChanges(ostream & os, LyXFont const & base,
 769                                   LyXFont const & next) const
 770 {
 771         int count = 0;
 772         bool env = false;
 773
 774         if (language() != base.language() && language() != next.language()) {
 775                 os << "}";
 776                 ++count;
 777                 env = true; // Size change need not bother about closing env.
 778         }
 779
 780         LyXFont f = *this; // why do you need this?
 781         f.reduce(base); // why isn't this just "reduce(base);" (Lgb)
 782         // Because this function is const. Everything breaks if this
 783         // method changes the font it represents. There is no speed penalty
 784         // by using the temporary. (Asger)
 785
 786         if (f.family() != INHERIT_FAMILY) {
 787                 os << '}';
 788                 ++count;
 789                 env = true; // Size change need not bother about closing env.
 790         }
 791         if (f.series() != INHERIT_SERIES) {
 792                 os << '}';
 793                 ++count;
 794                 env = true; // Size change need not bother about closing env.
 795         }
 796         if (f.shape() != INHERIT_SHAPE) {
 797                 os << '}';
 798                 ++count;
 799                 env = true; // Size change need not bother about closing env.
 800         }
 801         if (f.color() != LColor::inherit) {
 802                 os << '}';
 803                 ++count;
 804                 env = true; // Size change need not bother about closing env.
 805         }
 806         if (f.emph() == ON) {
 807                 os << '}';
 808                 ++count;
 809                 env = true; // Size change need not bother about closing env.
 810         }
 811         if (f.underbar() == ON) {
 812                 os << '}';
 813                 ++count;
 814                 env = true; // Size change need not bother about closing env.
 815         }
 816         if (f.noun() == ON) {
 817                 os << '}';
 818                 ++count;
 819                 env = true; // Size change need not bother about closing env.
 820         }
 821         if (f.size() != INHERIT_SIZE) {
 822                 // We only have to close if only size changed
 823                 if (!env) {
 824                         os << '}';
 825                         ++count;
 826                 }
 827         }
 828
 829         return count;
 830 }
 831
 832
 833 LColor::color LyXFont::realColor() const
 834 {
 835         if (latex() == ON)
 836                 return LColor::latex;
 837         if (color() == LColor::none)
 838                 return LColor::foreground;
 839         return color();
 840 }
 841
 842
 843 // Convert logical attributes to concrete shape attribute
 844 LyXFont::FONT_SHAPE LyXFont::realShape() const
 845 {
 846         register FONT_SHAPE s = shape();
 847
 848         if (emph() == ON) {
 849                 if (s == UP_SHAPE)
 850                         s = ITALIC_SHAPE;
 851                 else
 852                         s = UP_SHAPE;
 853         }
 854         if (noun() == ON)
 855                 s = SMALLCAPS_SHAPE;
 856         return s;
 857 }
 858
 859
 860 bool LyXFont::equalExceptLatex(LyXFont const & f) const
 861 {
 862         LyXFont f1 = *this;
 863         f1.setLatex(f.latex());
 864         return f1 == f;
 865 }
 866
 867
 868 ostream & operator<<(ostream & o, LyXFont::FONT_MISC_STATE fms)
 869 {
 870         return o << int(fms);
 871 }