src/paragraph_pimpl.C

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