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() == language() && toggleall)
 293                 if (language() == document_language)
 294                         setLanguage(default_language);
 295                 else
 296                         setLanguage(document_language);
 297         else if (newfont.language() != ignore_language)
 298                 setLanguage(newfont.language());
 299
 300         if (newfont.color() == color() && toggleall)
 301                 setColor(LColor::inherit); // toggle 'back'
 302         else if (newfont.color() != LColor::ignore)
 303                 setColor(newfont.color());
 304 }
 305
 306
 307 /// Reduce font to fall back to template where possible
 308 void LyXFont::reduce(LyXFont const & tmplt)
 309 {
 310         if (family() == tmplt.family())
 311                 setFamily(INHERIT_FAMILY);
 312         if (series() == tmplt.series())
 313                 setSeries(INHERIT_SERIES);
 314         if (shape() == tmplt.shape())
 315                 setShape(INHERIT_SHAPE);
 316         if (size() == tmplt.size())
 317                 setSize(INHERIT_SIZE);
 318         if (emph() == tmplt.emph())
 319                 setEmph(INHERIT);
 320         if (underbar() == tmplt.underbar())
 321                 setUnderbar(INHERIT);
 322         if (noun() == tmplt.noun())
 323                 setNoun(INHERIT);
 324         if (latex() == tmplt.latex())
 325                 setLatex(INHERIT);
 326         if (color() == tmplt.color())
 327                 setColor(LColor::inherit);
 328 }
 329
 330
 331 /// Realize font from a template
 332 LyXFont & LyXFont::realize(LyXFont const & tmplt)
 333 {
 334         if (bits == inherit) {
 335                 bits = tmplt.bits;
 336                 return *this;
 337         }
 338
 339         if (bits.family == INHERIT_FAMILY) {
 340                 bits.family = tmplt.bits.family;
 341         }
 342         if (bits.series == INHERIT_SERIES) {
 343                 bits.series = tmplt.bits.series;
 344         }
 345         if (bits.shape == INHERIT_SHAPE) {
 346                 bits.shape = tmplt.bits.shape;
 347         }
 348         if (bits.size == INHERIT_SIZE) {
 349                 bits.size = tmplt.bits.size;
 350         }
 351         if (bits.emph == INHERIT) {
 352                 bits.emph = tmplt.bits.emph;
 353         }
 354         if (bits.underbar == INHERIT) {
 355                 bits.underbar = tmplt.bits.underbar;
 356         }
 357         if (bits.noun == INHERIT) {
 358                 bits.noun = tmplt.bits.noun;
 359         }
 360         if (bits.latex == INHERIT) {
 361                 bits.latex = tmplt.bits.latex;
 362         }
 363         if (bits.color == LColor::inherit) {
 364                 bits.color = tmplt.bits.color;
 365         }
 366
 367         return *this;
 368 }
 369
 370
 371 /// Is font resolved?
 372 bool LyXFont::resolved() const
 373 {
 374         return (family() != INHERIT_FAMILY && series() != INHERIT_SERIES &&
 375                 shape() != INHERIT_SHAPE && size() != INHERIT_SIZE &&
 376                 emph() != INHERIT && underbar() != INHERIT &&
 377                 noun() != INHERIT && latex() != INHERIT &&
 378                 color() != LColor::inherit);
 379 }
 380
 381
 382 /// Build GUI description of font state
 383 string LyXFont::stateText() const
 384 {
 385 #ifdef HAVE_SSTREAM
 386         std::ostringstream ost;
 387 #else
 388         char str[1024];
 389         ostrstream ost(str, 1024);
 390 #endif
 391         if (family() != INHERIT_FAMILY)
 392                 ost << _(GUIFamilyNames[family()]) << ", ";
 393         if (series() != INHERIT_SERIES)
 394                 ost << _(GUISeriesNames[series()]) << ", ";
 395         if (shape() != INHERIT_SHAPE)
 396                 ost << _(GUIShapeNames[shape()]) << ", ";
 397         if (size() != INHERIT_SIZE)
 398                 ost << _(GUISizeNames[size()]) << ", ";
 399         if (color() != LColor::inherit)
 400                 ost << lcolor.getGUIName(color()) << ", ";
 401         if (emph() != INHERIT)
 402                 ost << _("Emphasis ")
 403                     << _(GUIMiscNames[emph()]) << ", ";
 404         if (underbar() != INHERIT)
 405                 ost << _("Underline ")
 406                     << _(GUIMiscNames[underbar()]) << ", ";
 407         if (noun() != INHERIT)
 408                 ost << _("Noun ") << _(GUIMiscNames[noun()]) << ", ";
 409         if (latex() != INHERIT)
 410                 ost << _("Latex ") << _(GUIMiscNames[latex()]) << ", ";
 411         //if (buf.empty())
 412         //      ost << _("Default");
 413         unsigned int opos = ost.tellp();
 414         //lyxerr << "Opos: " << opos << endl;
 415         if (opos == 0)
 416                 ost << _("Default") << ", ";
 417         ost << _("Language: ") << _(language()->display.c_str());
 418 #ifdef HAVE_SSTREAM
 419         string buf(ost.str().c_str());
 420 #else
 421         ost << '\0';
 422         string buf(ost.str());
 423 #endif
 424         buf = strip(buf, ' ');
 425         buf = strip(buf, ',');
 426         return buf;
 427 }
 428
 429
 430 // Set family according to lyx format string
 431 LyXFont & LyXFont::setLyXFamily(string const & fam)
 432 {
 433         string s = lowercase(fam);
 434
 435         int i = 0;
 436         while (s != LyXFamilyNames[i] && LyXFamilyNames[i] != "error") ++i;
 437         if (s == LyXFamilyNames[i]) {
 438                 setFamily(LyXFont::FONT_FAMILY(i));
 439         } else
 440                 lyxerr << "LyXFont::setLyXFamily: Unknown family `"
 441                        << s << '\'' << endl;
 442         return *this;
 443 }
 444
 445
 446 // Set series according to lyx format string
 447 LyXFont & LyXFont::setLyXSeries(string const & ser)
 448 {
 449         string s = lowercase(ser);
 450
 451         int i = 0;
 452         while (s != LyXSeriesNames[i] && LyXSeriesNames[i] != "error") ++i;
 453         if (s == LyXSeriesNames[i]) {
 454                 setSeries(LyXFont::FONT_SERIES(i));
 455         } else
 456                 lyxerr << "LyXFont::setLyXSeries: Unknown series `"
 457                        << s << '\'' << endl;
 458         return *this;
 459 }
 460
 461
 462 // Set shape according to lyx format string
 463 LyXFont & LyXFont::setLyXShape(string const & sha)
 464 {
 465         string s = lowercase(sha);
 466
 467         int i = 0;
 468         while (s != LyXShapeNames[i] && LyXShapeNames[i] != "error") ++i;
 469         if (s == LyXShapeNames[i]) {
 470                 setShape(LyXFont::FONT_SHAPE(i));
 471         } else
 472                 lyxerr << "LyXFont::setLyXShape: Unknown shape `"
 473                        << s << '\'' << endl;
 474         return *this;
 475 }
 476
 477
 478 // Set size according to lyx format string
 479 LyXFont & LyXFont::setLyXSize(string const & siz)
 480 {
 481         string s = lowercase(siz);
 482         int i = 0;
 483         while (s != LyXSizeNames[i] && LyXSizeNames[i] != "error") ++i;
 484         if (s == LyXSizeNames[i]) {
 485                 setSize(LyXFont::FONT_SIZE(i));
 486         } else
 487                 lyxerr << "LyXFont::setLyXSize: Unknown size `"
 488                        << s << '\'' << endl;
 489         return *this;
 490 }
 491
 492
 493 // Set size according to lyx format string
 494 LyXFont::FONT_MISC_STATE LyXFont::setLyXMisc(string const & siz)
 495 {
 496         string s = lowercase(siz);
 497         int i = 0;
 498         while (s != LyXMiscNames[i] && LyXMiscNames[i] != "error") ++i;
 499         if (s == LyXMiscNames[i])
 500                 return FONT_MISC_STATE(i);
 501         lyxerr << "LyXFont::setLyXMisc: Unknown misc flag `"
 502                << s << '\'' << endl;
 503         return OFF;
 504 }
 505
 506
 507 /// Sets color after LyX text format
 508 LyXFont & LyXFont::setLyXColor(string const & col)
 509 {
 510         setColor(lcolor.getFromLyXName(col));
 511         return *this;
 512 }
 513
 514
 515 /// Sets size after GUI name
 516 LyXFont & LyXFont::setGUISize(string const & siz)
 517 {
 518         // CHECK this might be wrong.
 519         /// ??????
 520         // this is how it was how it was done in the lyx repository...
 521         // but this does not make sense.
 522         setColor(lcolor.getFromGUIName(siz));
 523         return *this;
 524 }
 525
 526
 527 // Returns size in latex format
 528 string LyXFont::latexSize() const
 529 {
 530         return LaTeXSizeNames[size()];
 531 }
 532
 533
 534 // Read a font definition from given file in lyx format
 535 // Used for layouts
 536 LyXFont & LyXFont::lyxRead(LyXLex & lex)
 537 {
 538         bool error = false;
 539         bool finished = false;
 540         while (!finished && lex.IsOK() && !error) {
 541                 lex.next();
 542                 string tok = lowercase(lex.GetString());
 543
 544                 if (tok.empty()) {
 545                         continue;
 546                 } else if (tok == "endfont") {
 547                         finished = true;
 548                 } else if (tok == "family") {
 549                         lex.next();
 550                         string tok = lex.GetString();
 551                         setLyXFamily(tok);
 552                 } else if (tok == "series") {
 553                         lex.next();
 554                         string tok = lex.GetString();
 555                         setLyXSeries(tok);
 556                 } else if (tok == "shape") {
 557                         lex.next();
 558                         string tok = lex.GetString();
 559                         setLyXShape(tok);
 560                 } else if (tok == "size") {
 561                         lex.next();
 562                         string tok = lex.GetString();
 563                         setLyXSize(tok);
 564                 } else if (tok == "latex") {
 565                         lex.next();
 566                         string tok = lowercase(lex.GetString());
 567
 568                         if (tok == "no_latex") {
 569                                 setLatex(OFF);
 570                         } else if (tok == "latex") {
 571                                 setLatex(ON);
 572                         } else {
 573                                 lex.printError("Illegal LaTeX type`$$Token'");
 574                         }
 575                 } else if (tok == "misc") {
 576                         lex.next();
 577                         string tok = lowercase(lex.GetString());
 578
 579                         if (tok == "no_bar") {
 580                                 setUnderbar(OFF);
 581                         } else if (tok == "no_emph") {
 582                                 setEmph(OFF);
 583                         } else if (tok == "no_noun") {
 584                                 setNoun(OFF);
 585                         } else if (tok == "emph") {
 586                                 setEmph(ON);
 587                         } else if (tok == "underbar") {
 588                                 setUnderbar(ON);
 589                         } else if (tok == "noun") {
 590                                 setNoun(ON);
 591                         } else {
 592                                 lex.printError("Illegal misc type `$$Token´");
 593                         }
 594                 } else if (tok == "color") {
 595                         lex.next();
 596                         string tok = lex.GetString();
 597                         setLyXColor(tok);
 598                 } else {
 599                         lex.printError("Unknown tag `$$Token'");
 600                         error = true;
 601                 }
 602         }
 603         return *this;
 604 }
 605
 606
 607 /// Writes the changes from this font to orgfont in .lyx format in file
 608 void LyXFont::lyxWriteChanges(LyXFont const & orgfont, ostream & os) const
 609 {
 610         os << "\n";
 611         if (orgfont.family() != family()) {
 612                 os << "\\family " << LyXFamilyNames[family()] << " \n";
 613         }
 614         if (orgfont.series() != series()) {
 615                 os << "\\series " << LyXSeriesNames[series()] << " \n";
 616         }
 617         if (orgfont.shape() != shape()) {
 618                 os << "\\shape " << LyXShapeNames[shape()] << " \n";
 619         }
 620         if (orgfont.size() != size()) {
 621                 os << "\\size " << LyXSizeNames[size()] << " \n";
 622         }
 623         if (orgfont.emph() != emph()) {
 624                 os << "\\emph " << LyXMiscNames[emph()] << " \n";
 625         }
 626         if (orgfont.underbar() != underbar()) {
 627                 // This is only for backwards compatibility
 628                 switch (underbar()) {
 629                 case OFF:       os << "\\bar no \n"; break;
 630                 case ON:        os << "\\bar under \n"; break;
 631                 case TOGGLE:    lyxerr << "LyXFont::lyxWriteFontChanges: "
 632                                         "TOGGLE should not appear here!"
 633                                        << endl;
 634                 break;
 635                 case INHERIT:   os << "\\bar default \n"; break;
 636                 case IGNORE:    lyxerr << "LyXFont::lyxWriteFontChanges: "
 637                                         "IGNORE should not appear here!"
 638                                        << endl;
 639                 break;
 640                 }
 641         }
 642         if (orgfont.noun() != noun()) {
 643                 os << "\\noun " << LyXMiscNames[noun()] << " \n";
 644         }
 645         if (orgfont.latex() != latex()) {
 646                 // This is only for backwards compatibility
 647                 switch (latex()) {
 648                 case OFF:       os << "\\latex no_latex \n"; break;
 649                 case ON:        os << "\\latex latex \n"; break;
 650                 case TOGGLE:    lyxerr << "LyXFont::lyxWriteFontChanges: "
 651                                         "TOGGLE should not appear here!"
 652                                        << endl;
 653                 break;
 654                 case INHERIT:   os << "\\latex default \n"; break;
 655                 case IGNORE:    lyxerr << "LyXFont::lyxWriteFontChanges: "
 656                                         "IGNORE should not appear here!"
 657                                        << endl;
 658                 break;
 659                 }
 660         }
 661         if (orgfont.color() != color()) {
 662                 os << "\\color " << lcolor.getLyXName(color()) << "\n";
 663         }
 664         if (orgfont.language() != language()) {
 665                 if (language())
 666                         os << "\\lang " << language()->lang << "\n";
 667                 else
 668                         os << "\\lang unknown\n";
 669         }
 670 }
 671
 672
 673 /// Writes the head of the LaTeX needed to impose this font
 674 // Returns number of chars written.
 675 int LyXFont::latexWriteStartChanges(ostream & os, LyXFont const & base,
 676                                     LyXFont const & prev) const
 677 {
 678         int count = 0;
 679         bool env = false;
 680
 681         if (language() != base.language() && language() != prev.language()) {
 682                 if (isRightToLeft() != prev.isRightToLeft()) {
 683                         if (isRightToLeft()) {
 684                                 os << "\\R{";
 685                                 count += 3;
 686                                 env = true; //We have opened a new environment
 687                         } else {
 688                                 os << "\\L{";
 689                                 count += 3;
 690                                 env = true; //We have opened a new environment
 691                         }
 692                 } else {
 693                         string tmp = '{' +
 694                                 subst(lyxrc.language_command_begin,
 695                                       "$$lang", language()->lang);
 696                         os << tmp;
 697                         count += tmp.length();
 698                         env = true; //We have opened a new environment
 699                 }
 700         }
 701
 702         LyXFont f = *this;
 703         f.reduce(base);
 704
 705         if (f.family() != INHERIT_FAMILY) {
 706                 os << '\\'
 707                    << LaTeXFamilyNames[f.family()]
 708                    << '{';
 709                 count += strlen(LaTeXFamilyNames[f.family()]) + 2;
 710                 env = true; //We have opened a new environment
 711         }
 712         if (f.series() != INHERIT_SERIES) {
 713                 os << '\\'
 714                    << LaTeXSeriesNames[f.series()]
 715                    << '{';
 716                 count += strlen(LaTeXSeriesNames[f.series()]) + 2;
 717                 env = true; //We have opened a new environment
 718         }
 719         if (f.shape() != INHERIT_SHAPE) {
 720                 os << '\\'
 721                    << LaTeXShapeNames[f.shape()]
 722                    << '{';
 723                 count += strlen(LaTeXShapeNames[f.shape()]) + 2;
 724                 env = true; //We have opened a new environment
 725         }
 726         if (f.color() != LColor::inherit) {
 727                 os << "\\textcolor{"
 728                    << lcolor.getLaTeXName(f.color())
 729                    << "}{";
 730                 count += lcolor.getLaTeXName(f.color()).length() + 13;
 731                 env = true; //We have opened a new environment
 732         }
 733         if (f.emph() == ON) {
 734                 os << "\\emph{";
 735                 count += 6;
 736                 env = true; //We have opened a new environment
 737         }
 738         if (f.underbar() == ON) {
 739                 os << "\\underbar{";
 740                 count += 10;
 741                 env = true; //We have opened a new environment
 742         }
 743         // \noun{} is a LyX special macro
 744         if (f.noun() == ON) {
 745                 os << "\\noun{";
 746                 count += 8;
 747                 env = true; //We have opened a new environment
 748         }
 749         if (f.size() != INHERIT_SIZE) {
 750                 // If we didn't open an environment above, we open one here
 751                 if (!env) {
 752                         os << '{';
 753                         ++count;
 754                 }
 755                 os << '\\'
 756                    << LaTeXSizeNames[f.size()]
 757                    << ' ';
 758                 count += strlen(LaTeXSizeNames[f.size()]) + 2;
 759         }
 760         return count;
 761 }
 762
 763
 764 /// Writes ending block of LaTeX needed to close use of this font
 765 // Returns number of chars written
 766 // This one corresponds to latexWriteStartChanges(). (Asger)
 767 int LyXFont::latexWriteEndChanges(ostream & os, LyXFont const & base,
 768                                   LyXFont const & next) const
 769 {
 770         int count = 0;
 771         bool env = false;
 772
 773         if (language() != base.language() && language() != next.language()) {
 774                 os << "}";
 775                 ++count;
 776                 env = true; // Size change need not bother about closing env.
 777         }
 778
 779         LyXFont f = *this; // why do you need this?
 780         f.reduce(base); // why isn't this just "reduce(base);" (Lgb)
 781         // Because this function is const. Everything breaks if this
 782         // method changes the font it represents. There is no speed penalty
 783         // by using the temporary. (Asger)
 784
 785         if (f.family() != INHERIT_FAMILY) {
 786                 os << '}';
 787                 ++count;
 788                 env = true; // Size change need not bother about closing env.
 789         }
 790         if (f.series() != INHERIT_SERIES) {
 791                 os << '}';
 792                 ++count;
 793                 env = true; // Size change need not bother about closing env.
 794         }
 795         if (f.shape() != INHERIT_SHAPE) {
 796                 os << '}';
 797                 ++count;
 798                 env = true; // Size change need not bother about closing env.
 799         }
 800         if (f.color() != LColor::inherit) {
 801                 os << '}';
 802                 ++count;
 803                 env = true; // Size change need not bother about closing env.
 804         }
 805         if (f.emph() == ON) {
 806                 os << '}';
 807                 ++count;
 808                 env = true; // Size change need not bother about closing env.
 809         }
 810         if (f.underbar() == ON) {
 811                 os << '}';
 812                 ++count;
 813                 env = true; // Size change need not bother about closing env.
 814         }
 815         if (f.noun() == ON) {
 816                 os << '}';
 817                 ++count;
 818                 env = true; // Size change need not bother about closing env.
 819         }
 820         if (f.size() != INHERIT_SIZE) {
 821                 // We only have to close if only size changed
 822                 if (!env) {
 823                         os << '}';
 824                         ++count;
 825                 }
 826         }
 827
 828         return count;
 829 }
 830
 831
 832 LColor::color LyXFont::realColor() const
 833 {
 834         if (latex() == ON)
 835                 return LColor::latex;
 836         if (color() == LColor::none)
 837                 return LColor::foreground;
 838         return color();
 839 }
 840
 841
 842 // Convert logical attributes to concrete shape attribute
 843 LyXFont::FONT_SHAPE LyXFont::realShape() const
 844 {
 845         register FONT_SHAPE s = shape();
 846
 847         if (emph() == ON) {
 848                 if (s == UP_SHAPE)
 849                         s = ITALIC_SHAPE;
 850                 else
 851                         s = UP_SHAPE;
 852         }
 853         if (noun() == ON)
 854                 s = SMALLCAPS_SHAPE;
 855         return s;
 856 }
 857
 858
 859 bool LyXFont::equalExceptLatex(LyXFont const & f) const
 860 {
 861         LyXFont f1 = *this;
 862         f1.setLatex(f.latex());
 863         return f1 == f;
 864 }
 865
 866
 867 ostream & operator<<(ostream & o, LyXFont::FONT_MISC_STATE fms)
 868 {
 869         return o << int(fms);
 870 }