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