src/paragraph_pimpl.C

   1 /* This file is part of
   2  * ======================================================
   3  *
   4  *           LyX, The Document Processor
   5  *
   6  *           Copyright 1995 Matthias Ettrich
   7  *           Copyright 1995-2001 The LyX Team.
   8  *
   9  * ====================================================== */
  10
  11 #include <config.h>
  12
  13 #include "paragraph_pimpl.h"
  14 #include "LaTeXFeatures.h"
  15 #include "texrow.h"
  16 #include "language.h"
  17 #include "bufferparams.h"
  18 #include "encoding.h"
  19 #include "lyxrc.h"
  20 #include "debug.h"
  21
  22 #include "support/LAssert.h"
  23
  24 using lyx::pos_type;
  25 using std::endl;
  26 using std::ostream;
  27 using std::upper_bound;
  28 using std::lower_bound;
  29
  30 // Initialize static member.
  31 ShareContainer<LyXFont> Paragraph::Pimpl::FontTable::container;
  32 // Initialization of the counter for the paragraph id's,
  33 unsigned int Paragraph::Pimpl::paragraph_id = 0;
  34
  35 namespace {
  36
  37 struct special_phrase {
  38         string phrase;
  39         string macro;
  40         bool builtin;
  41 };
  42
  43 special_phrase special_phrases[] = {
  44         { "LyX", "\\LyX{}", false },
  45         { "TeX", "\\TeX{}", true },
  46         { "LaTeX2e", "\\LaTeXe{}", true },
  47         { "LaTeX", "\\LaTeX{}", true },
  48 };
  49
  50 size_t const phrases_nr = sizeof(special_phrases)/sizeof(special_phrase);
  51
  52 } // namespace anon
  53
  54
  55 Paragraph::Pimpl::Pimpl(Paragraph * owner)
  56         : owner_(owner)
  57 {
  58         inset_owner = 0;
  59         id_ = paragraph_id++;
  60 }
  61
  62
  63 Paragraph::Pimpl::Pimpl(Pimpl const & p, Paragraph * owner, bool same_ids)
  64         : params(p.params), owner_(owner)
  65 {
  66         inset_owner = p.inset_owner;
  67         text = p.text;
  68         fontlist = p.fontlist;
  69         if (same_ids)
  70                 id_ = p.id_;
  71         else
  72                 id_ = paragraph_id++;
  73
  74         if (p.tracking())
  75                 changes_.reset(new Changes(*p.changes_.get()));
  76 }
  77
  78
  79 void Paragraph::Pimpl::clear()
  80 {
  81         text.clear();
  82 #warning changes ?
  83 }
  84
  85
  86 void Paragraph::Pimpl::setContentsFromPar(Paragraph const * par)
  87 {
  88         lyx::Assert(par);
  89         text = par->pimpl_->text;
  90         if (par->pimpl_->tracking()) {
  91                 changes_.reset(new Changes(*(par->pimpl_->changes_.get())));
  92         }
  93 }
  94
  95
  96 void Paragraph::Pimpl::trackChanges(Change::Type type)
  97 {
  98         if (tracking()) {
  99                 lyxerr[Debug::CHANGES] << "already tracking for par " << id_ << endl;
 100                 return;
 101         }
 102
 103         lyxerr[Debug::CHANGES] << "track changes for par "
 104                 << id_ << " type " << type << endl;
 105         changes_.reset(new Changes(type));
 106         changes_->set(type, 0, size());
 107 }
 108
 109
 110 void Paragraph::Pimpl::untrackChanges()
 111 {
 112         changes_.reset(0);
 113 }
 114
 115
 116 void Paragraph::Pimpl::cleanChanges()
 117 {
 118         // if we're not tracking, we don't want to reset...
 119         if (!tracking())
 120                 return;
 121
 122         changes_.reset(new Changes(Change::INSERTED));
 123         changes_->set(Change::INSERTED, 0, size());
 124 }
 125
 126
 127 bool Paragraph::Pimpl::isChanged(pos_type start, pos_type end) const
 128 {
 129         if (!tracking())
 130                 return false;
 131
 132         return changes_->isChange(start, end);
 133 }
 134
 135
 136 bool Paragraph::Pimpl::isChangeEdited(pos_type start, pos_type end) const
 137 {
 138         if (!tracking())
 139                 return false;
 140
 141         return changes_->isChangeEdited(start, end);
 142 }
 143
 144
 145 void Paragraph::Pimpl::setChange(pos_type pos, Change::Type type)
 146 {
 147         if (!tracking())
 148                 return;
 149
 150         changes_->set(type, pos);
 151 }
 152
 153
 154 Change::Type Paragraph::Pimpl::lookupChange(pos_type pos) const
 155 {
 156         if (!tracking())
 157                 return Change::UNCHANGED;
 158
 159         return changes_->lookup(pos);
 160 }
 161
 162
 163 Change const Paragraph::Pimpl::lookupChangeFull(pos_type pos) const
 164 {
 165         if (!tracking())
 166                 return Change(Change::UNCHANGED);
 167
 168         return changes_->lookupFull(pos);
 169 }
 170
 171
 172 void Paragraph::Pimpl::markErased()
 173 {
 174         lyx::Assert(tracking());
 175
 176         // FIXME: we should actually remove INSERTED chars.
 177         // difficult because owning insettexts/tabulars need
 178         // to update themselves when rows etc. change
 179         changes_->set(Change::DELETED, 0, size());
 180         changes_->reset(Change::DELETED);
 181 }
 182
 183
 184 void Paragraph::Pimpl::acceptChange(pos_type start, pos_type end)
 185 {
 186         if (!tracking())
 187                 return;
 188
 189         if (!size()) {
 190                 changes_.reset(new Changes(Change::UNCHANGED));
 191                 return;
 192         }
 193
 194         lyxerr << "acceptchange" << endl;
 195         pos_type i = start;
 196
 197         for (; i < end; ++i) {
 198                 switch (lookupChange(i)) {
 199                         case Change::UNCHANGED:
 200                                 break;
 201
 202                         case Change::INSERTED:
 203                                 changes_->set(Change::UNCHANGED, i);
 204                                 break;
 205
 206                         case Change::DELETED:
 207                                 eraseIntern(i);
 208                                 changes_->erase(i);
 209                                 --end;
 210                                 --i;
 211                                 break;
 212                 }
 213         }
 214
 215         lyxerr << "endacceptchange" << endl;
 216         changes_->reset(Change::UNCHANGED);
 217 }
 218
 219
 220 void Paragraph::Pimpl::rejectChange(pos_type start, pos_type end)
 221 {
 222         if (!tracking())
 223                 return;
 224
 225         if (!size()) {
 226                 changes_.reset(new Changes(Change::UNCHANGED));
 227                 return;
 228         }
 229
 230         pos_type i = start;
 231
 232         for (; i < end; ++i) {
 233                 switch (lookupChange(i)) {
 234                         case Change::UNCHANGED:
 235                                 break;
 236
 237                         case Change::INSERTED:
 238                                 eraseIntern(i);
 239                                 changes_->erase(i);
 240                                 --end;
 241                                 --i;
 242                                 break;
 243
 244                         case Change::DELETED:
 245                                 changes_->set(Change::UNCHANGED, i);
 246                                 break;
 247                 }
 248         }
 249         changes_->reset(Change::UNCHANGED);
 250 }
 251
 252
 253 Paragraph::value_type Paragraph::Pimpl::getChar(pos_type pos) const
 254 {
 255         lyx::Assert(pos <= size());
 256
 257         // This is stronger, and I belive that this is the assertion
 258         // that we should really use. (Lgb)
 259         // Rationale - getChar() is really text[]. getInset(getChar(size()))
 260         // makes no sense (crashes). The fact we return '\0' should be
 261         // evidence enough - jbl
 262         //lyx::Assert(pos < size());
 263
 264 #if 1
 265         // This is in the critical path for loading!
 266         pos_type const siz = size();
 267
 268         if (pos == siz) {
 269                 lyxerr << "getChar() on pos " << pos << " in par id "
 270                         << owner_->id() << " of size " << siz
 271                         << "  is a bit silly !" << endl;
 272                 return '\0';
 273         }
 274 #endif
 275         return text[pos];
 276 }
 277
 278
 279 void Paragraph::Pimpl::setChar(pos_type pos, value_type c)
 280 {
 281 #warning changes
 282         text[pos] = c;
 283 }
 284
 285
 286 void Paragraph::Pimpl::insertChar(pos_type pos, value_type c,
 287                                   LyXFont const & font, Change change)
 288 {
 289         lyx::Assert(pos <= size());
 290
 291         if (tracking()) {
 292                 changes_->record(change, pos);
 293         }
 294
 295         // This is actually very common when parsing buffers (and
 296         // maybe inserting ascii text)
 297         if (pos == size()) {
 298                 // when appending characters, no need to update tables
 299                 text.push_back(c);
 300                 owner_->setFont(pos, font);
 301                 return;
 302         }
 303
 304         text.insert(text.begin() + pos, c);
 305
 306         // Update the font table.
 307         FontTable search_font(pos, LyXFont());
 308         for (FontList::iterator it = lower_bound(fontlist.begin(),
 309                                                       fontlist.end(),
 310                                                       search_font, matchFT());
 311              it != fontlist.end(); ++it)
 312         {
 313                 it->pos(it->pos() + 1);
 314         }
 315
 316         // Update the insets
 317         owner_->insetlist.increasePosAfterPos(pos);
 318
 319         owner_->setFont(pos, font);
 320 }
 321
 322
 323 void Paragraph::Pimpl::insertInset(pos_type pos,
 324                                    Inset * inset, LyXFont const & font, Change change)
 325 {
 326         lyx::Assert(inset);
 327         lyx::Assert(pos <= size());
 328
 329         insertChar(pos, META_INSET, font, change);
 330         lyx::Assert(text[pos] == META_INSET);
 331
 332         // Add a new entry in the insetlist.
 333         owner_->insetlist.insert(inset, pos);
 334         inset->parOwner(owner_);
 335
 336         if (inset_owner)
 337                 inset->setOwner(inset_owner);
 338 }
 339
 340
 341 bool Paragraph::Pimpl::erasePos(pos_type pos)
 342 {
 343         lyx::Assert(pos < size());
 344
 345         if (tracking()) {
 346                 Change::Type changetype(changes_->lookup(pos));
 347                 changes_->record(Change(Change::DELETED), pos);
 348
 349                 // only allow the actual removal if it was /new/ text
 350                 if (changetype != Change::INSERTED) {
 351                         if (text[pos] == Paragraph::META_INSET) {
 352                                 Inset * i(owner_->getInset(pos));
 353                                 i->markErased();
 354                         }
 355                         return false;
 356                 }
 357         }
 358
 359         eraseIntern(pos);
 360         return true;
 361 }
 362
 363
 364 void Paragraph::Pimpl::eraseIntern(pos_type pos)
 365 {
 366         // if it is an inset, delete the inset entry
 367         if (text[pos] == Paragraph::META_INSET) {
 368                 owner_->insetlist.erase(pos);
 369         }
 370
 371         text.erase(text.begin() + pos);
 372
 373         // Erase entries in the tables.
 374         FontTable search_font(pos, LyXFont());
 375
 376         FontList::iterator it =
 377                 lower_bound(fontlist.begin(),
 378                             fontlist.end(),
 379                             search_font, matchFT());
 380         if (it != fontlist.end() && it->pos() == pos &&
 381             (pos == 0 ||
 382              (it != fontlist.begin()
 383               && boost::prior(it)->pos() == pos - 1))) {
 384                 // If it is a multi-character font
 385                 // entry, we just make it smaller
 386                 // (see update below), otherwise we
 387                 // should delete it.
 388                 unsigned int const i = it - fontlist.begin();
 389                 fontlist.erase(fontlist.begin() + i);
 390                 it = fontlist.begin() + i;
 391                 if (i > 0 && i < fontlist.size() &&
 392                     fontlist[i - 1].font() == fontlist[i].font()) {
 393                         fontlist.erase(fontlist.begin() + i - 1);
 394                         it = fontlist.begin() + i - 1;
 395                 }
 396         }
 397
 398         // Update all other entries.
 399         FontList::iterator fend = fontlist.end();
 400         for (; it != fend; ++it)
 401                 it->pos(it->pos() - 1);
 402
 403         // Update the insetlist.
 404         owner_->insetlist.decreasePosAfterPos(pos);
 405 }
 406
 407
 408 void Paragraph::Pimpl::erase(pos_type pos)
 409 {
 410         erasePos(pos);
 411 }
 412
 413
 414 bool Paragraph::Pimpl::erase(pos_type start, pos_type end)
 415 {
 416         pos_type i = start;
 417         pos_type count = end - start;
 418         bool any_erased = false;
 419
 420         while (count) {
 421                 if (!erasePos(i)) {
 422                         ++i;
 423                 } else {
 424                         any_erased = true;
 425                 }
 426                 --count;
 427         }
 428         return any_erased;
 429 }
 430
 431
 432 void Paragraph::Pimpl::simpleTeXBlanks(ostream & os, TexRow & texrow,
 433                                        pos_type const i,
 434                                        unsigned int & column,
 435                                        LyXFont const & font,
 436                                        LyXLayout const & style)
 437 {
 438         if (style.pass_thru) return;
 439         if (column > lyxrc.ascii_linelen
 440             && i
 441             && getChar(i - 1) != ' '
 442             && (i < size() - 1)
 443             // same in FreeSpacing mode
 444             && !style.free_spacing
 445                 && !owner_->isFreeSpacing()
 446             // In typewriter mode, we want to avoid
 447             // ! . ? : at the end of a line
 448             && !(font.family() == LyXFont::TYPEWRITER_FAMILY
 449                  && (getChar(i - 1) == '.'
 450                      || getChar(i - 1) == '?'
 451                      || getChar(i - 1) == ':'
 452                      || getChar(i - 1) == '!'))) {
 453                 os << '\n';
 454                 texrow.newline();
 455                 texrow.start(owner_, i + 1);
 456                 column = 0;
 457         } else if (style.free_spacing) {
 458                 os << '~';
 459         } else {
 460                 os << ' ';
 461         }
 462 }
 463
 464
 465 bool Paragraph::Pimpl::isTextAt(string const & str, pos_type pos) const
 466 {
 467         pos_type const len = str.length();
 468
 469         // is the paragraph large enough?
 470         if (pos + len > size())
 471                 return false;
 472
 473         // does the wanted text start at point?
 474         for (string::size_type i = 0; i < str.length(); ++i) {
 475                 if (str[i] != text[pos + i])
 476                         return false;
 477         }
 478
 479         // is there a font change in middle of the word?
 480         FontList::const_iterator cit = fontlist.begin();
 481         FontList::const_iterator end = fontlist.end();
 482         for (; cit != end; ++cit) {
 483                 if (cit->pos() >= pos)
 484                         break;
 485         }
 486         if (cit != end && pos + len - 1 > cit->pos())
 487                 return false;
 488
 489         return true;
 490 }
 491
 492
 493 void Paragraph::Pimpl::simpleTeXSpecialChars(Buffer const * buf,
 494                                              BufferParams const & bparams,
 495                                              ostream & os,
 496                                              TexRow & texrow,
 497                                              bool moving_arg,
 498                                              LyXFont & font,
 499                                              LyXFont & running_font,
 500                                              LyXFont & basefont,
 501                                              bool & open_font,
 502                                              Change::Type & running_change,
 503                                              LyXLayout const & style,
 504                                              pos_type & i,
 505                                              unsigned int & column,
 506                                              value_type const c)
 507 {
 508         if (style.pass_thru) {
 509                 if (c != '\0')
 510                         os << c;
 511                 return;
 512         }
 513
 514         // Two major modes:  LaTeX or plain
 515         // Handle here those cases common to both modes
 516         // and then split to handle the two modes separately.
 517         switch (c) {
 518         case Paragraph::META_INSET: {
 519                 Inset * inset = owner_->getInset(i);
 520
 521                 // FIXME: remove this check
 522                 if (!inset)
 523                         break;
 524
 525                 // FIXME: move this to InsetNewline::latex
 526                 if (inset->lyxCode() == Inset::NEWLINE_CODE) {
 527                         // newlines are handled differently here than
 528                         // the default in simpleTeXSpecialChars().
 529                         if (!style.newline_allowed) {
 530                                 os << '\n';
 531                         } else {
 532                                 if (open_font) {
 533                                         column += running_font.latexWriteEndChanges(os, basefont, basefont);
 534                                         open_font = false;
 535                                 }
 536                                 basefont = owner_->getLayoutFont(bparams);
 537                                 running_font = basefont;
 538
 539                                 if (font.family() == LyXFont::TYPEWRITER_FAMILY)
 540                                         os << '~';
 541
 542                                 if (moving_arg)
 543                                         os << "\\protect ";
 544
 545                                 os << "\\\\\n";
 546                         }
 547                         texrow.newline();
 548                         texrow.start(owner_, i + 1);
 549                         column = 0;
 550                         break;
 551                 }
 552
 553                 if (inset->isTextInset()) {
 554                         column += Changes::latexMarkChange(os, running_change,
 555                                 Change::UNCHANGED);
 556                         running_change = Change::UNCHANGED;
 557                 }
 558
 559                 bool close = false;
 560                 int const len = os.tellp();
 561                 //ostream::pos_type const len = os.tellp();
 562                 if ((inset->lyxCode() == Inset::GRAPHICS_CODE
 563                      || inset->lyxCode() == Inset::MATH_CODE
 564                      || inset->lyxCode() == Inset::URL_CODE)
 565                     && running_font.isRightToLeft()) {
 566                         os << "\\L{";
 567                         close = true;
 568                 }
 569
 570 #ifdef WITH_WARNINGS
 571 #warning Bug: we can have an empty font change here!
 572 // if there has just been a font change, we are going to close it
 573 // right now, which means stupid latex code like \textsf{}. AFAIK,
 574 // this does not harm dvi output. A minor bug, thus (JMarc)
 575 #endif
 576                 // some insets cannot be inside a font change command
 577                 if (open_font && inset->noFontChange()) {
 578                         column +=running_font.
 579                                 latexWriteEndChanges(os,
 580                                                      basefont,
 581                                                      basefont);
 582                         open_font = false;
 583                         basefont = owner_->getLayoutFont(bparams);
 584                         running_font = basefont;
 585                 }
 586
 587                 int tmp = inset->latex(buf, os, moving_arg,
 588                                        style.free_spacing);
 589
 590                 if (close)
 591                         os << '}';
 592
 593                 if (tmp) {
 594                         for (int j = 0; j < tmp; ++j) {
 595                                 texrow.newline();
 596                         }
 597                         texrow.start(owner_, i + 1);
 598                         column = 0;
 599                 } else {
 600                         column += int(os.tellp()) - len;
 601                 }
 602         }
 603         break;
 604
 605         default:
 606                 // And now for the special cases within each mode
 607
 608                 switch (c) {
 609                 case '\\':
 610                         os << "\\textbackslash{}";
 611                         column += 15;
 612                         break;
 613
 614                 case '±': case '²': case '³':
 615                 case '×': case '÷': case '¹':
 616                 case '¬': case 'µ':
 617                         if ((bparams.inputenc == "latin1" ||
 618                              bparams.inputenc == "latin9") ||
 619                             (bparams.inputenc == "auto" &&
 620                              (font.language()->encoding()->LatexName()
 621                               == "latin1" ||
 622                               font.language()->encoding()->LatexName()
 623                               == "latin9"))) {
 624                                 os << "\\ensuremath{"
 625                                    << c
 626                                    << '}';
 627                                 column += 13;
 628                         } else {
 629                                 os << c;
 630                         }
 631                         break;
 632
 633                 case '|': case '<': case '>':
 634                         // In T1 encoding, these characters exist
 635                         if (lyxrc.fontenc == "T1") {
 636                                 os << c;
 637                                 //... but we should avoid ligatures
 638                                 if ((c == '>' || c == '<')
 639                                     && i <= size() - 2
 640                                     && getChar(i + 1) == c) {
 641                                         //os << "\\textcompwordmark{}";
 642                                         // Jean-Marc, have a look at
 643                                         // this. I think this works
 644                                         // equally well:
 645                                         os << "\\,{}";
 646                                         // Lgb
 647                                         column += 19;
 648                                 }
 649                                 break;
 650                         }
 651                         // Typewriter font also has them
 652                         if (font.family() == LyXFont::TYPEWRITER_FAMILY) {
 653                                 os << c;
 654                                 break;
 655                         }
 656                         // Otherwise, we use what LaTeX
 657                         // provides us.
 658                         switch (c) {
 659                         case '<':
 660                                 os << "\\textless{}";
 661                                 column += 10;
 662                                 break;
 663                         case '>':
 664                                 os << "\\textgreater{}";
 665                                 column += 13;
 666                                 break;
 667                         case '|':
 668                                 os << "\\textbar{}";
 669                                 column += 9;
 670                                 break;
 671                         }
 672                         break;
 673
 674                 case '-': // "--" in Typewriter mode -> "-{}-"
 675                         if (i <= size() - 2
 676                             && getChar(i + 1) == '-'
 677                             && font.family() == LyXFont::TYPEWRITER_FAMILY) {
 678                                 os << "-{}";
 679                                 column += 2;
 680                         } else {
 681                                 os << '-';
 682                         }
 683                         break;
 684
 685                 case '\"':
 686                         os << "\\char`\\\"{}";
 687                         column += 9;
 688                         break;
 689
 690                 case '£':
 691                         if (bparams.inputenc == "default") {
 692                                 os << "\\pounds{}";
 693                                 column += 8;
 694                         } else {
 695                                 os << c;
 696                         }
 697                         break;
 698
 699                 case '$': case '&':
 700                 case '%': case '#': case '{':
 701                 case '}': case '_':
 702                         os << '\\' << c;
 703                         column += 1;
 704                         break;
 705
 706                 case '~':
 707                         os << "\\textasciitilde{}";
 708                         column += 16;
 709                         break;
 710
 711                 case '^':
 712                         os << "\\textasciicircum{}";
 713                         column += 17;
 714                         break;
 715
 716                 case '*': case '[': case ']':
 717                         // avoid being mistaken for optional arguments
 718                         os << '{' << c << '}';
 719                         column += 2;
 720                         break;
 721
 722                 case ' ':
 723                         // Blanks are printed before font switching.
 724                         // Sure? I am not! (try nice-latex)
 725                         // I am sure it's correct. LyX might be smarter
 726                         // in the future, but for now, nothing wrong is
 727                         // written. (Asger)
 728                         break;
 729
 730                 default:
 731
 732                         // I assume this is hack treating typewriter as verbatim
 733                         if (font.family() == LyXFont::TYPEWRITER_FAMILY) {
 734                                 if (c != '\0') {
 735                                         os << c;
 736                                 }
 737                                 break;
 738                         }
 739
 740                         // LyX, LaTeX etc.
 741
 742                         // FIXME: if we have "LaTeX" with a font
 743                         // change in the middle (before the 'T', then
 744                         // the "TeX" part is still special cased.
 745                         // Really we should only operate this on
 746                         // "words" for some definition of word
 747
 748                         size_t pnr = 0;
 749
 750                         for (; pnr < phrases_nr; ++pnr) {
 751                                 if (isTextAt(special_phrases[pnr].phrase, i)) {
 752                                         os << special_phrases[pnr].macro;
 753                                         i += special_phrases[pnr].phrase.length() - 1;
 754                                         column += special_phrases[pnr].macro.length() - 1;
 755                                         break;
 756                                 }
 757                         }
 758
 759                         if (pnr == phrases_nr && c != '\0') {
 760                                 os << c;
 761                         }
 762                         break;
 763                 }
 764         }
 765 }
 766
 767
 768 void Paragraph::Pimpl::validate(LaTeXFeatures & features,
 769                                 LyXLayout const & layout) const
 770 {
 771         BufferParams const & bparams = features.bufferParams();
 772
 773         // check the params.
 774         if (params.lineTop() || params.lineBottom())
 775                 features.require("lyxline");
 776         if (!params.spacing().isDefault())
 777                 features.require("setspace");
 778
 779         // then the layouts
 780         features.useLayout(layout.name());
 781
 782         // then the fonts
 783         Language const * doc_language = bparams.language;
 784
 785         FontList::const_iterator fcit = fontlist.begin();
 786         FontList::const_iterator fend = fontlist.end();
 787         for (; fcit != fend; ++fcit) {
 788                 if (fcit->font().noun() == LyXFont::ON) {
 789                         lyxerr[Debug::LATEX] << "font.noun: "
 790                                              << fcit->font().noun()
 791                                              << endl;
 792                         features.require("noun");
 793                         lyxerr[Debug::LATEX] << "Noun enabled. Font: "
 794                                              << fcit->font().stateText(0)
 795                                              << endl;
 796                 }
 797                 switch (fcit->font().color()) {
 798                 case LColor::none:
 799                 case LColor::inherit:
 800                 case LColor::ignore:
 801                         // probably we should put here all interface colors used for
 802                         // font displaying! For now I just add this ones I know of (Jug)
 803                 case LColor::latex:
 804                 case LColor::note:
 805                         break;
 806                 default:
 807                         features.require("color");
 808                         lyxerr[Debug::LATEX] << "Color enabled. Font: "
 809                                              << fcit->font().stateText(0)
 810                                              << endl;
 811                 }
 812
 813                 Language const * language = fcit->font().language();
 814                 if (language->babel() != doc_language->babel() &&
 815                     language != ignore_language &&
 816                     language != latex_language)
 817                 {
 818                         features.useLanguage(language);
 819                         lyxerr[Debug::LATEX] << "Found language "
 820                                              << language->babel() << endl;
 821                 }
 822         }
 823
 824         if (!params.leftIndent().zero())
 825                 features.require("ParagraphLeftIndent");
 826
 827         // then the insets
 828         InsetList::iterator icit = owner_->insetlist.begin();
 829         InsetList::iterator iend = owner_->insetlist.end();
 830         for (; icit != iend; ++icit) {
 831                 if (icit.getInset()) {
 832                         icit.getInset()->validate(features);
 833                         if (layout.needprotect &&
 834                             icit.getInset()->lyxCode() == Inset::FOOT_CODE)
 835                                 features.require("NeedLyXFootnoteCode");
 836                 }
 837         }
 838
 839         // then the contents
 840         for (pos_type i = 0; i < size() ; ++i) {
 841                 for (size_t pnr = 0; pnr < phrases_nr; ++pnr) {
 842                         if (!special_phrases[pnr].builtin
 843                             && isTextAt(special_phrases[pnr].phrase, i)) {
 844                                 features.require(special_phrases[pnr].phrase);
 845                                 break;
 846                         }
 847                 }
 848         }
 849 }
 850
 851
 852 LyXFont const Paragraph::Pimpl::realizeFont(LyXFont const & font,
 853                                             BufferParams const & bparams) const
 854 {
 855         LyXFont tmpfont(font);
 856
 857         // check for environment font information
 858         char par_depth = owner_->getDepth();
 859         Paragraph const * par = owner_;
 860         LyXTextClass const & tclass = bparams.getLyXTextClass();
 861
 862         while (par && par->getDepth() && !tmpfont.resolved()) {
 863                 par = par->outerHook();
 864                 if (par) {
 865                         tmpfont.realize(par->layout()->font);
 866                         par_depth = par->getDepth();
 867                 }
 868         }
 869
 870         tmpfont.realize(tclass.defaultfont());
 871         return tmpfont;
 872 }