src/lyxfont.C

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