src/lyxfont.C

   1 /* This file is part of
   2  * ======================================================
   3  *
   4  *           LyX, The Document Processor
   5  *
   6  *           Copyright 1995 Matthias Ettrich
   7  *           Copyright 1995-2000 The LyX Team.
   8  *
   9  * ====================================================== */
  10
  11 #include <config.h>
  12 #include <clocale>
  13
  14 #ifdef __GNUG__
  15 #pragma implementation "lyxfont.h"
  16 #endif
  17
  18 #include <cctype>
  19
  20 #include "gettext.h"
  21 #include "lyxfont.h"
  22 #include "debug.h"
  23 #include "lyxrc.h"
  24 #include "lyxlex.h"
  25 #include "FontLoader.h"
  26 #include "support/lstrings.h"
  27 #include "bufferparams.h" // stateText
  28
  29 using std::ostream;
  30 using std::endl;
  31
  32 //
  33 // Names for the GUI
  34 //
  35
  36 static
  37 char const * GUIFamilyNames[6] =
  38 { N_("Roman"), N_("Sans serif"), N_("Typewriter"), N_("Symbol"), N_("Inherit"),
  39   N_("Ignore") };
  40
  41 static
  42 char const * GUISeriesNames[4] =
  43 { N_("Medium"), N_("Bold"), N_("Inherit"), N_("Ignore") };
  44
  45 static
  46 char const * GUIShapeNames[6] =
  47 { N_("Upright"), N_("Italic"), N_("Slanted"), N_("Smallcaps"), N_("Inherit"),
  48   N_("Ignore") };
  49
  50 static
  51 char const * GUISizeNames[14] =
  52 { N_("Tiny"), N_("Smallest"), N_("Smaller"), N_("Small"), N_("Normal"), N_("Large"),
  53   N_("Larger"), N_("Largest"), N_("Huge"), N_("Huger"), N_("Increase"), N_("Decrease"),
  54   N_("Inherit"), N_("Ignore") };
  55
  56 static
  57 char const * GUIMiscNames[5] =
  58 { N_("Off"), N_("On"), N_("Toggle"), N_("Inherit"), N_("Ignore") };
  59
  60
  61 //
  62 // Strings used to read and write .lyx format files
  63 //
  64 static
  65 char const * LyXFamilyNames[6] =
  66 { "roman", "sans", "typewriter", "symbol", "default", "error" };
  67
  68 static
  69 char const * LyXSeriesNames[4] =
  70 { "medium", "bold", "default", "error" };
  71
  72 static
  73 char const * LyXShapeNames[6] =
  74 { "up", "italic", "slanted", "smallcaps", "default", "error" };
  75
  76 static
  77 char const * LyXSizeNames[14] =
  78 { "tiny", "scriptsize", "footnotesize", "small", "normal", "large",
  79   "larger", "largest", "huge", "giant",
  80   "increase-error", "decrease-error", "default", "error" };
  81
  82 static
  83 char const * LyXMiscNames[5] =
  84 { "off", "on", "toggle", "default", "error" };
  85
  86 //
  87 // Strings used to write LaTeX files
  88 //
  89 static
  90 char const * LaTeXFamilyNames[6] =
  91 { "textrm", "textsf", "texttt", "error1", "error2", "error3" };
  92
  93 static
  94 char const * LaTeXSeriesNames[4] =
  95 { "textmd", "textbf", "error4", "error5" };
  96
  97 static
  98 char const * LaTeXShapeNames[6] =
  99 { "textup", "textit", "textsl", "textsc", "error6", "error7" };
 100
 101 static
 102 char const * LaTeXSizeNames[14] =
 103 { "tiny", "scriptsize", "footnotesize", "small", "normalsize", "large",
 104   "Large", "LARGE", "huge", "Huge", "error8", "error9", "error10", "error11" };
 105
 106
 107 LyXFont::FontBits LyXFont::sane = {
 108         ROMAN_FAMILY,
 109         MEDIUM_SERIES,
 110         UP_SHAPE,
 111         SIZE_NORMAL,
 112         LColor::none,
 113         OFF,
 114         OFF,
 115         OFF,
 116         OFF };
 117
 118 LyXFont::FontBits LyXFont::inherit = {
 119         INHERIT_FAMILY,
 120         INHERIT_SERIES,
 121         INHERIT_SHAPE,
 122         INHERIT_SIZE,
 123         LColor::inherit,
 124         INHERIT,
 125         INHERIT,
 126         INHERIT,
 127         INHERIT };
 128
 129 LyXFont::FontBits LyXFont::ignore = {
 130         IGNORE_FAMILY,
 131         IGNORE_SERIES,
 132         IGNORE_SHAPE,
 133         IGNORE_SIZE,
 134         LColor::ignore,
 135         IGNORE,
 136         IGNORE,
 137         IGNORE,
 138         IGNORE };
 139
 140
 141 bool LyXFont::FontBits::operator==(LyXFont::FontBits const & fb1) const
 142 {
 143                         return fb1.family == family &&
 144                                 fb1.series == series &&
 145                                 fb1.shape == shape &&
 146                                 fb1.size == size &&
 147                                 fb1.color == color &&
 148                                 fb1.emph == emph &&
 149                                 fb1.underbar == underbar &&
 150                                 fb1.noun == noun &&
 151                                 fb1.latex == latex;
 152 }
 153
 154
 155 bool LyXFont::FontBits::operator!=(LyXFont::FontBits const & fb1) const
 156 {
 157         return !(fb1 == *this);
 158 }
 159
 160
 161 /// Decreases font size by one
 162 LyXFont & LyXFont::decSize()
 163 {
 164         switch (size()) {
 165         case SIZE_HUGER:        setSize(SIZE_HUGE);     break;
 166         case SIZE_HUGE:         setSize(SIZE_LARGEST);  break;
 167         case SIZE_LARGEST:      setSize(SIZE_LARGER);   break;
 168         case SIZE_LARGER:       setSize(SIZE_LARGE);    break;
 169         case SIZE_LARGE:        setSize(SIZE_NORMAL);   break;
 170         case SIZE_NORMAL:       setSize(SIZE_SMALL);    break;
 171         case SIZE_SMALL:        setSize(SIZE_FOOTNOTE); break;
 172         case SIZE_FOOTNOTE:     setSize(SIZE_SCRIPT);   break;
 173         case SIZE_SCRIPT:       setSize(SIZE_TINY);     break;
 174         case SIZE_TINY:         break;
 175         case INCREASE_SIZE:
 176                 lyxerr << "Can't LyXFont::decSize on INCREASE_SIZE" << endl;
 177                 break;
 178         case DECREASE_SIZE:
 179                 lyxerr <<"Can't LyXFont::decSize on DECREASE_SIZE" << endl;
 180                 break;
 181         case INHERIT_SIZE:
 182                 lyxerr <<"Can't LyXFont::decSize on INHERIT_SIZE" << endl;
 183                 break;
 184         case IGNORE_SIZE:
 185                 lyxerr <<"Can't LyXFont::decSize on IGNORE_SIZE" << endl;
 186                 break;
 187         }
 188         return *this;
 189 }
 190
 191
 192 /// Increases font size by one
 193 LyXFont & LyXFont::incSize()
 194 {
 195         switch(size()) {
 196         case SIZE_HUGER:        break;
 197         case SIZE_HUGE:         setSize(SIZE_HUGER);    break;
 198         case SIZE_LARGEST:      setSize(SIZE_HUGE);     break;
 199         case SIZE_LARGER:       setSize(SIZE_LARGEST);  break;
 200         case SIZE_LARGE:        setSize(SIZE_LARGER);   break;
 201         case SIZE_NORMAL:       setSize(SIZE_LARGE);    break;
 202         case SIZE_SMALL:        setSize(SIZE_NORMAL);   break;
 203         case SIZE_FOOTNOTE:     setSize(SIZE_SMALL);    break;
 204         case SIZE_SCRIPT:       setSize(SIZE_FOOTNOTE); break;
 205         case SIZE_TINY:         setSize(SIZE_SCRIPT);   break;
 206         case INCREASE_SIZE:
 207                 lyxerr <<"Can't LyXFont::incSize on INCREASE_SIZE" << endl;
 208                 break;
 209         case DECREASE_SIZE:
 210                 lyxerr <<"Can't LyXFont::incSize on DECREASE_SIZE" << endl;
 211                 break;
 212         case INHERIT_SIZE:
 213                 lyxerr <<"Can't LyXFont::incSize on INHERIT_SIZE" << endl;
 214                 break;
 215         case IGNORE_SIZE:
 216                 lyxerr <<"Can't LyXFont::incSize on IGNORE_SIZE" << endl;
 217                 break;
 218         }
 219         return *this;
 220 }
 221
 222
 223 /// Updates a misc setting according to request
 224 LyXFont::FONT_MISC_STATE LyXFont::setMisc(FONT_MISC_STATE newfont,
 225                                           FONT_MISC_STATE org)
 226 {
 227         if (newfont == TOGGLE) {
 228                 if (org == ON)
 229                         return OFF;
 230                 else if (org == OFF)
 231                         return ON;
 232                 else {
 233                         lyxerr <<"LyXFont::setMisc: Need state"
 234                                 " ON or OFF to toggle. Setting to ON" << endl;
 235                         return ON;
 236                 }
 237         } else if (newfont == IGNORE)
 238                 return org;
 239         else
 240                 return newfont;
 241 }
 242
 243
 244 /// Updates font settings according to request
 245 void LyXFont::update(LyXFont const & newfont,
 246                      Language const * document_language, bool toggleall)
 247 {
 248         if(newfont.family() == family() && toggleall)
 249                 setFamily(INHERIT_FAMILY); // toggle 'back'
 250         else if (newfont.family() != IGNORE_FAMILY)
 251                 setFamily(newfont.family());
 252         // else it's IGNORE_SHAPE
 253
 254         // "Old" behaviour: "Setting" bold will toggle bold on/off.
 255         switch (newfont.series()) {
 256         case BOLD_SERIES:
 257                 // We toggle...
 258                 if (series() == BOLD_SERIES && toggleall)
 259                         setSeries(MEDIUM_SERIES);
 260                 else
 261                         setSeries(BOLD_SERIES);
 262                 break;
 263         case MEDIUM_SERIES:
 264         case INHERIT_SERIES:
 265                 setSeries(newfont.series());
 266                 break;
 267         case IGNORE_SERIES:
 268                 break;
 269         }
 270
 271         if(newfont.shape() == shape() && toggleall)
 272                 setShape(INHERIT_SHAPE); // toggle 'back'
 273         else if (newfont.shape() != IGNORE_SHAPE)
 274                 setShape(newfont.shape());
 275         // else it's IGNORE_SHAPE
 276
 277         if (newfont.size() != IGNORE_SIZE) {
 278                 if (newfont.size() == INCREASE_SIZE)
 279                         incSize();
 280                 else if (newfont.size() == DECREASE_SIZE)
 281                         decSize();
 282                 else if (newfont.size() == size() && toggleall)
 283                         setSize(INHERIT_SIZE); // toggle 'back'
 284                 else
 285                         setSize(newfont.size());
 286         }
 287
 288         setEmph(setMisc(newfont.emph(), emph()));
 289         setUnderbar(setMisc(newfont.underbar(), underbar()));
 290         setNoun(setMisc(newfont.noun(), noun()));
 291         setLatex(setMisc(newfont.latex(), latex()));
 292
 293         if (newfont.language() == language() && toggleall)
 294                 if (language() == document_language)
 295                         setLanguage(default_language);
 296                 else
 297                         setLanguage(document_language);
 298         else if (newfont.language() != ignore_language)
 299                 setLanguage(newfont.language());
 300
 301         if (newfont.color() == color() && toggleall)
 302                 setColor(LColor::inherit); // toggle 'back'
 303         else if (newfont.color() != LColor::ignore)
 304                 setColor(newfont.color());
 305 }
 306
 307
 308 /// Reduce font to fall back to template where possible
 309 void LyXFont::reduce(LyXFont const & tmplt)
 310 {
 311         if (family() == tmplt.family())
 312                 setFamily(INHERIT_FAMILY);
 313         if (series() == tmplt.series())
 314                 setSeries(INHERIT_SERIES);
 315         if (shape() == tmplt.shape())
 316                 setShape(INHERIT_SHAPE);
 317         if (size() == tmplt.size())
 318                 setSize(INHERIT_SIZE);
 319         if (emph() == tmplt.emph())
 320                 setEmph(INHERIT);
 321         if (underbar() == tmplt.underbar())
 322                 setUnderbar(INHERIT);
 323         if (noun() == tmplt.noun())
 324                 setNoun(INHERIT);
 325         if (latex() == tmplt.latex())
 326                 setLatex(INHERIT);
 327         if (color() == tmplt.color())
 328                 setColor(LColor::inherit);
 329 }
 330
 331
 332 /// Realize font from a template
 333 LyXFont & LyXFont::realize(LyXFont const & tmplt)
 334 {
 335         if (bits == inherit) {
 336                 bits = tmplt.bits;
 337                 return *this;
 338         }
 339
 340         if (bits.family == INHERIT_FAMILY) {
 341                 bits.family = tmplt.bits.family;
 342         }
 343         if (bits.series == INHERIT_SERIES) {
 344                 bits.series = tmplt.bits.series;
 345         }
 346         if (bits.shape == INHERIT_SHAPE) {
 347                 bits.shape = tmplt.bits.shape;
 348         }
 349         if (bits.size == INHERIT_SIZE) {
 350                 bits.size = tmplt.bits.size;
 351         }
 352         if (bits.emph == INHERIT) {
 353                 bits.emph = tmplt.bits.emph;
 354         }
 355         if (bits.underbar == INHERIT) {
 356                 bits.underbar = tmplt.bits.underbar;
 357         }
 358         if (bits.noun == INHERIT) {
 359                 bits.noun = tmplt.bits.noun;
 360         }
 361         if (bits.latex == INHERIT) {
 362                 bits.latex = tmplt.bits.latex;
 363         }
 364         if (bits.color == LColor::inherit) {
 365                 bits.color = tmplt.bits.color;
 366         }
 367
 368         return *this;
 369 }
 370
 371
 372 /// Is font resolved?
 373 bool LyXFont::resolved() const
 374 {
 375         return (family() != INHERIT_FAMILY && series() != INHERIT_SERIES &&
 376                 shape() != INHERIT_SHAPE && size() != INHERIT_SIZE &&
 377                 emph() != INHERIT && underbar() != INHERIT &&
 378                 noun() != INHERIT && latex() != INHERIT &&
 379                 color() != LColor::inherit);
 380 }
 381
 382
 383 /// Build GUI description of font state
 384 string LyXFont::stateText(BufferParams * params) 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 (bits == inherit)
 413                 ost << _("Default") << ", ";
 414         if (!params || (language() != params->language_info &&
 415                         language()->lang() != "default"))
 416                 ost << _("Language: ") << _(language()->display().c_str());
 417 #ifdef HAVE_SSTREAM
 418         string buf(ost.str().c_str());
 419 #else
 420         ost << '\0';
 421         string buf(ost.str());
 422 #endif
 423         buf = strip(buf, ' ');
 424         buf = strip(buf, ',');
 425         return buf;
 426 }
 427
 428
 429 // Set family according to lyx format string
 430 LyXFont & LyXFont::setLyXFamily(string const & fam)
 431 {
 432         string s = lowercase(fam);
 433
 434         int i = 0;
 435         while (s != LyXFamilyNames[i] && LyXFamilyNames[i] != "error") ++i;
 436         if (s == LyXFamilyNames[i]) {
 437                 setFamily(LyXFont::FONT_FAMILY(i));
 438         } else
 439                 lyxerr << "LyXFont::setLyXFamily: Unknown family `"
 440                        << s << '\'' << endl;
 441         return *this;
 442 }
 443
 444
 445 // Set series according to lyx format string
 446 LyXFont & LyXFont::setLyXSeries(string const & ser)
 447 {
 448         string s = lowercase(ser);
 449
 450         int i = 0;
 451         while (s != LyXSeriesNames[i] && LyXSeriesNames[i] != "error") ++i;
 452         if (s == LyXSeriesNames[i]) {
 453                 setSeries(LyXFont::FONT_SERIES(i));
 454         } else
 455                 lyxerr << "LyXFont::setLyXSeries: Unknown series `"
 456                        << s << '\'' << endl;
 457         return *this;
 458 }
 459
 460
 461 // Set shape according to lyx format string
 462 LyXFont & LyXFont::setLyXShape(string const & sha)
 463 {
 464         string s = lowercase(sha);
 465
 466         int i = 0;
 467         while (s != LyXShapeNames[i] && LyXShapeNames[i] != "error") ++i;
 468         if (s == LyXShapeNames[i]) {
 469                 setShape(LyXFont::FONT_SHAPE(i));
 470         } else
 471                 lyxerr << "LyXFont::setLyXShape: Unknown shape `"
 472                        << s << '\'' << endl;
 473         return *this;
 474 }
 475
 476
 477 // Set size according to lyx format string
 478 LyXFont & LyXFont::setLyXSize(string const & siz)
 479 {
 480         string s = lowercase(siz);
 481         int i = 0;
 482         while (s != LyXSizeNames[i] && LyXSizeNames[i] != "error") ++i;
 483         if (s == LyXSizeNames[i]) {
 484                 setSize(LyXFont::FONT_SIZE(i));
 485         } else
 486                 lyxerr << "LyXFont::setLyXSize: Unknown size `"
 487                        << s << '\'' << endl;
 488         return *this;
 489 }
 490
 491
 492 // Set size according to lyx format string
 493 LyXFont::FONT_MISC_STATE LyXFont::setLyXMisc(string const & siz)
 494 {
 495         string s = lowercase(siz);
 496         int i = 0;
 497         while (s != LyXMiscNames[i] && LyXMiscNames[i] != "error") ++i;
 498         if (s == LyXMiscNames[i])
 499                 return FONT_MISC_STATE(i);
 500         lyxerr << "LyXFont::setLyXMisc: Unknown misc flag `"
 501                << s << '\'' << endl;
 502         return OFF;
 503 }
 504
 505
 506 /// Sets color after LyX text format
 507 LyXFont & LyXFont::setLyXColor(string const & col)
 508 {
 509         setColor(lcolor.getFromLyXName(col));
 510         return *this;
 511 }
 512
 513
 514 /// Sets size after GUI name
 515 LyXFont & LyXFont::setGUISize(string const & siz)
 516 {
 517         // CHECK this might be wrong.
 518         /// ??????
 519         // this is how it was how it was done in the lyx repository...
 520         // but this does not make sense.
 521         setColor(lcolor.getFromGUIName(siz));
 522         return *this;
 523 }
 524
 525
 526 // Returns size in latex format
 527 string LyXFont::latexSize() const
 528 {
 529         return LaTeXSizeNames[size()];
 530 }
 531
 532
 533 // Read a font definition from given file in lyx format
 534 // Used for layouts
 535 LyXFont & LyXFont::lyxRead(LyXLex & lex)
 536 {
 537         bool error = false;
 538         bool finished = false;
 539         while (!finished && lex.IsOK() && !error) {
 540                 lex.next();
 541                 string tok = lowercase(lex.GetString());
 542
 543                 if (tok.empty()) {
 544                         continue;
 545                 } else if (tok == "endfont") {
 546                         finished = true;
 547                 } else if (tok == "family") {
 548                         lex.next();
 549                         string tok = lex.GetString();
 550                         setLyXFamily(tok);
 551                 } else if (tok == "series") {
 552                         lex.next();
 553                         string tok = lex.GetString();
 554                         setLyXSeries(tok);
 555                 } else if (tok == "shape") {
 556                         lex.next();
 557                         string tok = lex.GetString();
 558                         setLyXShape(tok);
 559                 } else if (tok == "size") {
 560                         lex.next();
 561                         string tok = lex.GetString();
 562                         setLyXSize(tok);
 563                 } else if (tok == "latex") {
 564                         lex.next();
 565                         string tok = lowercase(lex.GetString());
 566
 567                         if (tok == "no_latex") {
 568                                 setLatex(OFF);
 569                         } else if (tok == "latex") {
 570                                 setLatex(ON);
 571                         } else {
 572                                 lex.printError("Illegal LaTeX type`$$Token'");
 573                         }
 574                 } else if (tok == "misc") {
 575                         lex.next();
 576                         string tok = lowercase(lex.GetString());
 577
 578                         if (tok == "no_bar") {
 579                                 setUnderbar(OFF);
 580                         } else if (tok == "no_emph") {
 581                                 setEmph(OFF);
 582                         } else if (tok == "no_noun") {
 583                                 setNoun(OFF);
 584                         } else if (tok == "emph") {
 585                                 setEmph(ON);
 586                         } else if (tok == "underbar") {
 587                                 setUnderbar(ON);
 588                         } else if (tok == "noun") {
 589                                 setNoun(ON);
 590                         } else {
 591                                 lex.printError("Illegal misc type `$$Token´");
 592                         }
 593                 } else if (tok == "color") {
 594                         lex.next();
 595                         string tok = lex.GetString();
 596                         setLyXColor(tok);
 597                 } else {
 598                         lex.printError("Unknown tag `$$Token'");
 599                         error = true;
 600                 }
 601         }
 602         return *this;
 603 }
 604
 605
 606 /// Writes the changes from this font to orgfont in .lyx format in file
 607 void LyXFont::lyxWriteChanges(LyXFont const & orgfont, ostream & os) const
 608 {
 609         os << "\n";
 610         if (orgfont.family() != family()) {
 611                 os << "\\family " << LyXFamilyNames[family()] << " \n";
 612         }
 613         if (orgfont.series() != series()) {
 614                 os << "\\series " << LyXSeriesNames[series()] << " \n";
 615         }
 616         if (orgfont.shape() != shape()) {
 617                 os << "\\shape " << LyXShapeNames[shape()] << " \n";
 618         }
 619         if (orgfont.size() != size()) {
 620                 os << "\\size " << LyXSizeNames[size()] << " \n";
 621         }
 622         if (orgfont.emph() != emph()) {
 623                 os << "\\emph " << LyXMiscNames[emph()] << " \n";
 624         }
 625         if (orgfont.underbar() != underbar()) {
 626                 // This is only for backwards compatibility
 627                 switch (underbar()) {
 628                 case OFF:       os << "\\bar no \n"; break;
 629                 case ON:        os << "\\bar under \n"; break;
 630                 case TOGGLE:    lyxerr << "LyXFont::lyxWriteFontChanges: "
 631                                         "TOGGLE should not appear here!"
 632                                        << endl;
 633                 break;
 634                 case INHERIT:   os << "\\bar default \n"; break;
 635                 case IGNORE:    lyxerr << "LyXFont::lyxWriteFontChanges: "
 636                                         "IGNORE should not appear here!"
 637                                        << endl;
 638                 break;
 639                 }
 640         }
 641         if (orgfont.noun() != noun()) {
 642                 os << "\\noun " << LyXMiscNames[noun()] << " \n";
 643         }
 644         if (orgfont.latex() != latex()) {
 645                 // This is only for backwards compatibility
 646                 switch (latex()) {
 647                 case OFF:       os << "\\latex no_latex \n"; break;
 648                 case ON:        os << "\\latex latex \n"; break;
 649                 case TOGGLE:    lyxerr << "LyXFont::lyxWriteFontChanges: "
 650                                         "TOGGLE should not appear here!"
 651                                        << endl;
 652                 break;
 653                 case INHERIT:   os << "\\latex default \n"; break;
 654                 case IGNORE:    lyxerr << "LyXFont::lyxWriteFontChanges: "
 655                                         "IGNORE should not appear here!"
 656                                        << endl;
 657                 break;
 658                 }
 659         }
 660         if (orgfont.color() != color()) {
 661                 // To make us file compatible with older
 662                 // lyx versions we emit "default" instead
 663                 // of "inherit"
 664                 string col_str(lcolor.getLyXName(color()));
 665                 if (col_str == "inherit") col_str = "default";
 666                 os << "\\color " << col_str << "\n";
 667         }
 668         if (orgfont.language() != language() &&
 669             language()->lang() != "default") {
 670                 if (language())
 671                         os << "\\lang " << language()->lang() << "\n";
 672                 else
 673                         os << "\\lang unknown\n";
 674         }
 675 }
 676
 677
 678 /// Writes the head of the LaTeX needed to impose this font
 679 // Returns number of chars written.
 680 int LyXFont::latexWriteStartChanges(ostream & os, LyXFont const & base,
 681                                     LyXFont const & prev) const
 682 {
 683         int count = 0;
 684         bool env = false;
 685
 686         if (language() != base.language() && language() != prev.language() &&
 687             language()->lang() != "default") {
 688                 if (isRightToLeft() != prev.isRightToLeft()) {
 689                         if (isRightToLeft()) {
 690                                 os << "\\R{";
 691                                 count += 3;
 692                                 env = true; //We have opened a new environment
 693                         } else {
 694                                 os << "\\L{";
 695                                 count += 3;
 696                                 env = true; //We have opened a new environment
 697                         }
 698                 } else {
 699                         string tmp = '{' +
 700                                 subst(lyxrc.language_command_begin,
 701                                       "$$lang", language()->lang());
 702                         os << tmp;
 703                         count += tmp.length();
 704                         env = true; //We have opened a new environment
 705                 }
 706         }
 707
 708         LyXFont f = *this;
 709         f.reduce(base);
 710
 711         if (f.family() != INHERIT_FAMILY) {
 712                 os << '\\'
 713                    << LaTeXFamilyNames[f.family()]
 714                    << '{';
 715                 count += strlen(LaTeXFamilyNames[f.family()]) + 2;
 716                 env = true; //We have opened a new environment
 717         }
 718         if (f.series() != INHERIT_SERIES) {
 719                 os << '\\'
 720                    << LaTeXSeriesNames[f.series()]
 721                    << '{';
 722                 count += strlen(LaTeXSeriesNames[f.series()]) + 2;
 723                 env = true; //We have opened a new environment
 724         }
 725         if (f.shape() != INHERIT_SHAPE) {
 726                 os << '\\'
 727                    << LaTeXShapeNames[f.shape()]
 728                    << '{';
 729                 count += strlen(LaTeXShapeNames[f.shape()]) + 2;
 730                 env = true; //We have opened a new environment
 731         }
 732         if (f.color() != LColor::inherit) {
 733                 os << "\\textcolor{"
 734                    << lcolor.getLaTeXName(f.color())
 735                    << "}{";
 736                 count += lcolor.getLaTeXName(f.color()).length() + 13;
 737                 env = true; //We have opened a new environment
 738         }
 739         if (f.emph() == ON) {
 740                 os << "\\emph{";
 741                 count += 6;
 742                 env = true; //We have opened a new environment
 743         }
 744         if (f.underbar() == ON) {
 745                 os << "\\underbar{";
 746                 count += 10;
 747                 env = true; //We have opened a new environment
 748         }
 749         // \noun{} is a LyX special macro
 750         if (f.noun() == ON) {
 751                 os << "\\noun{";
 752                 count += 8;
 753                 env = true; //We have opened a new environment
 754         }
 755         if (f.size() != INHERIT_SIZE) {
 756                 // If we didn't open an environment above, we open one here
 757                 if (!env) {
 758                         os << '{';
 759                         ++count;
 760                 }
 761                 os << '\\'
 762                    << LaTeXSizeNames[f.size()]
 763                    << ' ';
 764                 count += strlen(LaTeXSizeNames[f.size()]) + 2;
 765         }
 766         return count;
 767 }
 768
 769
 770 /// Writes ending block of LaTeX needed to close use of this font
 771 // Returns number of chars written
 772 // This one corresponds to latexWriteStartChanges(). (Asger)
 773 int LyXFont::latexWriteEndChanges(ostream & os, LyXFont const & base,
 774                                   LyXFont const & next) const
 775 {
 776         int count = 0;
 777         bool env = false;
 778
 779         if (language() != base.language() && language() != next.language()
 780             && language()->lang() != "default") {
 781                 os << "}";
 782                 ++count;
 783                 env = true; // Size change need not bother about closing env.
 784         }
 785
 786         LyXFont f = *this; // why do you need this?
 787         f.reduce(base); // why isn't this just "reduce(base);" (Lgb)
 788         // Because this function is const. Everything breaks if this
 789         // method changes the font it represents. There is no speed penalty
 790         // by using the temporary. (Asger)
 791
 792         if (f.family() != INHERIT_FAMILY) {
 793                 os << '}';
 794                 ++count;
 795                 env = true; // Size change need not bother about closing env.
 796         }
 797         if (f.series() != INHERIT_SERIES) {
 798                 os << '}';
 799                 ++count;
 800                 env = true; // Size change need not bother about closing env.
 801         }
 802         if (f.shape() != INHERIT_SHAPE) {
 803                 os << '}';
 804                 ++count;
 805                 env = true; // Size change need not bother about closing env.
 806         }
 807         if (f.color() != LColor::inherit) {
 808                 os << '}';
 809                 ++count;
 810                 env = true; // Size change need not bother about closing env.
 811         }
 812         if (f.emph() == ON) {
 813                 os << '}';
 814                 ++count;
 815                 env = true; // Size change need not bother about closing env.
 816         }
 817         if (f.underbar() == ON) {
 818                 os << '}';
 819                 ++count;
 820                 env = true; // Size change need not bother about closing env.
 821         }
 822         if (f.noun() == ON) {
 823                 os << '}';
 824                 ++count;
 825                 env = true; // Size change need not bother about closing env.
 826         }
 827         if (f.size() != INHERIT_SIZE) {
 828                 // We only have to close if only size changed
 829                 if (!env) {
 830                         os << '}';
 831                         ++count;
 832                 }
 833         }
 834
 835         return count;
 836 }
 837
 838
 839 LColor::color LyXFont::realColor() const
 840 {
 841         if (latex() == ON)
 842                 return LColor::latex;
 843         if (color() == LColor::none)
 844                 return LColor::foreground;
 845         return color();
 846 }
 847
 848
 849 // Convert logical attributes to concrete shape attribute
 850 LyXFont::FONT_SHAPE LyXFont::realShape() const
 851 {
 852         register FONT_SHAPE s = shape();
 853
 854         if (emph() == ON) {
 855                 if (s == UP_SHAPE)
 856                         s = ITALIC_SHAPE;
 857                 else
 858                         s = UP_SHAPE;
 859         }
 860         if (noun() == ON)
 861                 s = SMALLCAPS_SHAPE;
 862         return s;
 863 }
 864
 865
 866 bool LyXFont::equalExceptLatex(LyXFont const & f) const
 867 {
 868         LyXFont f1 = *this;
 869         f1.setLatex(f.latex());
 870         return f1 == f;
 871 }
 872
 873
 874 ostream & operator<<(ostream & o, LyXFont::FONT_MISC_STATE fms)
 875 {
 876         return o << int(fms);
 877 }