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
  33 namespace lyx {
  34
  35 using std::endl;
  36 using std::upper_bound;
  37 using std::lower_bound;
  38 using std::string;
  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         docstring macro;
  49         bool builtin;
  50 };
  51
  52 special_phrase const special_phrases[] = {
  53         { "LyX", from_ascii("\\LyX{}"), false },
  54         { "TeX", from_ascii("\\TeX{}"), true },
  55         { "LaTeX2e", from_ascii("\\LaTeXe{}"), true },
  56         { "LaTeX", from_ascii("\\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), changes_(p.changes_), owner_(owner)
  74 {
  75         inset_owner = p.inset_owner;
  76         fontlist = p.fontlist;
  77         id_ = paragraph_id++;
  78 }
  79
  80
  81 void Paragraph::Pimpl::setContentsFromPar(Paragraph const & par)
  82 {
  83         owner_->text_ = par.text_;
  84         // FIXME: change tracking (MG)
  85         // check whether this method is really needed
  86         changes_ = par.pimpl_->changes_;
  87 }
  88
  89
  90 bool Paragraph::Pimpl::isChanged(pos_type start, pos_type end) const
  91 {
  92         BOOST_ASSERT(start >= 0 && start <= size());
  93         BOOST_ASSERT(end > start && end <= size() + 1);
  94
  95         return changes_.isChanged(start, end);
  96 }
  97
  98
  99 void Paragraph::Pimpl::setChange(Change const & change)
 100 {
 101         // beware of the imaginary end-of-par character!
 102         changes_.set(change, 0, size() + 1);
 103
 104         /*
 105          * Propagate the change recursively - but not in case of DELETED!
 106          *
 107          * Imagine that your co-author makes changes in an existing inset. He
 108          * sends your document to you and you come to the conclusion that the
 109          * inset should go completely. If you erase it, LyX must not delete all
 110          * text within the inset. Otherwise, the change tracked insertions of
 111          * your co-author get lost and there is no way to restore them later.
 112          *
 113          * Conclusion: An inset's content should remain untouched if you delete it
 114          */
 115
 116         if (change.type != Change::DELETED) {
 117                 for (pos_type pos = 0; pos < size(); ++pos) {
 118                         if (owner_->isInset(pos)) {
 119                                 owner_->getInset(pos)->setChange(change);
 120                         }
 121                 }
 122         }
 123 }
 124
 125
 126 void Paragraph::Pimpl::setChange(pos_type pos, Change const & change)
 127 {
 128         BOOST_ASSERT(pos >= 0 && pos <= size());
 129
 130         changes_.set(change, pos);
 131
 132         // see comment in setChange(Change const &) above
 133
 134         if (change.type != Change::DELETED &&
 135             pos < size() && owner_->isInset(pos)) {
 136                 owner_->getInset(pos)->setChange(change);
 137         }
 138 }
 139
 140
 141 Change const Paragraph::Pimpl::lookupChange(pos_type pos) const
 142 {
 143         BOOST_ASSERT(pos >= 0 && pos <= size());
 144
 145         return changes_.lookup(pos);
 146 }
 147
 148
 149 void Paragraph::Pimpl::acceptChanges(pos_type start, pos_type end)
 150 {
 151         BOOST_ASSERT(start >= 0 && start <= size());
 152         BOOST_ASSERT(end > start && end <= size() + 1);
 153
 154         for (pos_type pos = start; pos < end; ++pos) {
 155                 switch (lookupChange(pos).type) {
 156                         case Change::UNCHANGED:
 157                                 break;
 158
 159                         case Change::INSERTED:
 160                                 changes_.set(Change(Change::UNCHANGED), pos);
 161                                 break;
 162
 163                         case Change::DELETED:
 164                                 // Suppress access to non-existent
 165                                 // "end-of-paragraph char"
 166                                 if (pos < size()) {
 167                                         eraseChar(pos, false);
 168                                         --end;
 169                                         --pos;
 170                                 }
 171                                 break;
 172                 }
 173
 174                 // also accept changes in nested insets
 175                 if (pos < size() && owner_->isInset(pos)) {
 176                         owner_->getInset(pos)->acceptChanges();
 177                 }
 178         }
 179 }
 180
 181
 182 void Paragraph::Pimpl::rejectChanges(pos_type start, pos_type end)
 183 {
 184         BOOST_ASSERT(start >= 0 && start <= size());
 185         BOOST_ASSERT(end > start && end <= size() + 1);
 186
 187         for (pos_type pos = start; pos < end; ++pos) {
 188                 switch (lookupChange(pos).type) {
 189                         case Change::UNCHANGED:
 190                                 break;
 191
 192                         case Change::INSERTED:
 193                                 // Suppress access to non-existent
 194                                 // "end-of-paragraph char"
 195                                 if (pos < size()) {
 196                                         eraseChar(pos, false);
 197                                         --end;
 198                                         --pos;
 199                                 }
 200                                 break;
 201
 202                         case Change::DELETED:
 203                                 changes_.set(Change(Change::UNCHANGED), pos);
 204                                 break;
 205                 }
 206
 207                 // also reject changes in nested insets
 208                 if (pos < size() && owner_->isInset(pos)) {
 209                         owner_->getInset(pos)->rejectChanges();
 210                 }
 211         }
 212 }
 213
 214
 215 Paragraph::value_type Paragraph::Pimpl::getChar(pos_type pos) const
 216 {
 217         BOOST_ASSERT(pos >= 0 && pos <= size());
 218
 219         return owner_->getChar(pos);
 220 }
 221
 222
 223 void Paragraph::Pimpl::insertChar(pos_type pos, value_type c, Change const & change)
 224 {
 225         BOOST_ASSERT(pos >= 0 && pos <= size());
 226
 227         // track change
 228         changes_.insert(change, pos);
 229
 230         // This is actually very common when parsing buffers (and
 231         // maybe inserting ascii text)
 232         if (pos == size()) {
 233                 // when appending characters, no need to update tables
 234                 owner_->text_.push_back(c);
 235                 return;
 236         }
 237
 238         owner_->text_.insert(owner_->text_.begin() + pos, c);
 239
 240         // Update the font table.
 241         FontTable search_font(pos, LyXFont());
 242         for (FontList::iterator it
 243               = lower_bound(fontlist.begin(), fontlist.end(), search_font, matchFT());
 244              it != fontlist.end(); ++it)
 245         {
 246                 it->pos(it->pos() + 1);
 247         }
 248
 249         // Update the insets
 250         owner_->insetlist.increasePosAfterPos(pos);
 251 }
 252
 253
 254 void Paragraph::Pimpl::insertInset(pos_type pos, InsetBase * inset,
 255                                    Change const & change)
 256 {
 257         BOOST_ASSERT(inset);
 258         BOOST_ASSERT(pos >= 0 && pos <= size());
 259
 260         insertChar(pos, META_INSET, change);
 261         BOOST_ASSERT(owner_->text_[pos] == META_INSET);
 262
 263         // Add a new entry in the insetlist.
 264         owner_->insetlist.insert(inset, pos);
 265 }
 266
 267
 268 bool Paragraph::Pimpl::eraseChar(pos_type pos, bool trackChanges)
 269 {
 270         BOOST_ASSERT(pos >= 0 && pos <= size());
 271
 272         if (trackChanges) {
 273                 Change::Type changetype(changes_.lookup(pos).type);
 274
 275                 if (changetype == Change::UNCHANGED) {
 276                         setChange(pos, Change(Change::DELETED));
 277                         return false;
 278                 }
 279
 280                 if (changetype == Change::DELETED)
 281                         return false;
 282         }
 283
 284         // Don't physically access nonexistent end-of-paragraph char
 285         if (pos == size()) {
 286                 // FIXME: change tracking (MG)
 287                 // how do we handle end-of-pars previously marked inserted?
 288                 return false;
 289         }
 290
 291         // track change
 292         changes_.erase(pos);
 293
 294         // if it is an inset, delete the inset entry
 295         if (owner_->text_[pos] == Paragraph::META_INSET) {
 296                 owner_->insetlist.erase(pos);
 297         }
 298
 299         owner_->text_.erase(owner_->text_.begin() + pos);
 300
 301         // Erase entries in the tables.
 302         FontTable search_font(pos, LyXFont());
 303
 304         FontList::iterator it =
 305                 lower_bound(fontlist.begin(),
 306                             fontlist.end(),
 307                             search_font, matchFT());
 308         if (it != fontlist.end() && it->pos() == pos &&
 309             (pos == 0 ||
 310              (it != fontlist.begin()
 311               && boost::prior(it)->pos() == pos - 1))) {
 312                 // If it is a multi-character font
 313                 // entry, we just make it smaller
 314                 // (see update below), otherwise we
 315                 // should delete it.
 316                 unsigned int const i = it - fontlist.begin();
 317                 fontlist.erase(fontlist.begin() + i);
 318                 it = fontlist.begin() + i;
 319                 if (i > 0 && i < fontlist.size() &&
 320                     fontlist[i - 1].font() == fontlist[i].font()) {
 321                         fontlist.erase(fontlist.begin() + i - 1);
 322                         it = fontlist.begin() + i - 1;
 323                 }
 324         }
 325
 326         // Update all other entries
 327         FontList::iterator fend = fontlist.end();
 328         for (; it != fend; ++it)
 329                 it->pos(it->pos() - 1);
 330
 331         // Update the insetlist
 332         owner_->insetlist.decreasePosAfterPos(pos);
 333
 334         return true;
 335 }
 336
 337
 338 int Paragraph::Pimpl::eraseChars(pos_type start, pos_type end, bool trackChanges)
 339 {
 340         BOOST_ASSERT(start >= 0 && start <= size());
 341         BOOST_ASSERT(end > start && end <= size() + 1);
 342
 343         pos_type i = start;
 344         for (pos_type count = end - start; count; --count) {
 345                 if (!eraseChar(i, trackChanges))
 346                         ++i;
 347         }
 348         return end - i;
 349 }
 350
 351
 352 void Paragraph::Pimpl::simpleTeXBlanks(odocstream & os, TexRow & texrow,
 353                                        pos_type const i,
 354                                        unsigned int & column,
 355                                        LyXFont const & font,
 356                                        LyXLayout const & style)
 357 {
 358         if (style.pass_thru)
 359                 return;
 360
 361         if (column > lyxrc.ascii_linelen
 362             && i
 363             && getChar(i - 1) != ' '
 364             && (i < size() - 1)
 365             // same in FreeSpacing mode
 366             && !owner_->isFreeSpacing()
 367             // In typewriter mode, we want to avoid
 368             // ! . ? : at the end of a line
 369             && !(font.family() == LyXFont::TYPEWRITER_FAMILY
 370                  && (getChar(i - 1) == '.'
 371                      || getChar(i - 1) == '?'
 372                      || getChar(i - 1) == ':'
 373                      || getChar(i - 1) == '!'))) {
 374                 os << '\n';
 375                 texrow.newline();
 376                 texrow.start(owner_->id(), i + 1);
 377                 column = 0;
 378         } else if (style.free_spacing) {
 379                 os << '~';
 380         } else {
 381                 os << ' ';
 382         }
 383 }
 384
 385
 386 bool Paragraph::Pimpl::isTextAt(string const & str, pos_type pos) const
 387 {
 388         pos_type const len = str.length();
 389
 390         // is the paragraph large enough?
 391         if (pos + len > size())
 392                 return false;
 393
 394         // does the wanted text start at point?
 395         for (string::size_type i = 0; i < str.length(); ++i) {
 396                 if (str[i] != owner_->text_[pos + i])
 397                         return false;
 398         }
 399
 400         // is there a font change in middle of the word?
 401         FontList::const_iterator cit = fontlist.begin();
 402         FontList::const_iterator end = fontlist.end();
 403         for (; cit != end; ++cit) {
 404                 if (cit->pos() >= pos)
 405                         break;
 406         }
 407         if (cit != end && pos + len - 1 > cit->pos())
 408                 return false;
 409
 410         return true;
 411 }
 412
 413
 414 void Paragraph::Pimpl::simpleTeXSpecialChars(Buffer const & buf,
 415                                              BufferParams const & bparams,
 416                                              odocstream & os,
 417                                              TexRow & texrow,
 418                                              OutputParams const & runparams,
 419                                              LyXFont & font,
 420                                              LyXFont & running_font,
 421                                              LyXFont & basefont,
 422                                              LyXFont const & outerfont,
 423                                              bool & open_font,
 424                                              Change::Type & running_change,
 425                                              LyXLayout const & style,
 426                                              pos_type & i,
 427                                              unsigned int & column,
 428                                              value_type const c)
 429 {
 430         if (style.pass_thru) {
 431                 if (c != Paragraph::META_INSET) {
 432                         if (c != '\0')
 433                                 os.put(c);
 434                 } else
 435                         owner_->getInset(i)->plaintext(buf, os, runparams);
 436                 return;
 437         }
 438
 439         // Two major modes:  LaTeX or plain
 440         // Handle here those cases common to both modes
 441         // and then split to handle the two modes separately.
 442         switch (c) {
 443         case Paragraph::META_INSET: {
 444                 InsetBase * inset = owner_->getInset(i);
 445
 446                 // FIXME: remove this check
 447                 if (!inset)
 448                         break;
 449
 450                 // FIXME: move this to InsetNewline::latex
 451                 if (inset->lyxCode() == InsetBase::NEWLINE_CODE) {
 452                         // newlines are handled differently here than
 453                         // the default in simpleTeXSpecialChars().
 454                         if (!style.newline_allowed) {
 455                                 os << '\n';
 456                         } else {
 457                                 if (open_font) {
 458                                         column += running_font.latexWriteEndChanges(os, basefont, basefont);
 459                                         open_font = false;
 460                                 }
 461                                 basefont = owner_->getLayoutFont(bparams, outerfont);
 462                                 running_font = basefont;
 463
 464                                 if (font.family() == LyXFont::TYPEWRITER_FAMILY)
 465                                         os << '~';
 466
 467                                 if (runparams.moving_arg)
 468                                         os << "\\protect ";
 469
 470                                 os << "\\\\\n";
 471                         }
 472                         texrow.newline();
 473                         texrow.start(owner_->id(), i + 1);
 474                         column = 0;
 475                         break;
 476                 }
 477
 478                 // output change tracking marks only if desired,
 479                 // if dvipost is installed,
 480                 // and with dvi/ps (other formats don't work)
 481                 LaTeXFeatures features(buf, bparams, runparams);
 482                 bool const output = bparams.outputChanges
 483                         && runparams.flavor == OutputParams::LATEX
 484                         && features.isAvailable("dvipost");
 485
 486                 if (inset->canTrackChanges()) {
 487                         column += Changes::latexMarkChange(os, running_change,
 488                                 Change::UNCHANGED, output);
 489                         running_change = Change::UNCHANGED;
 490                 }
 491
 492                 bool close = false;
 493                 odocstream::pos_type const len = os.tellp();
 494
 495                 if ((inset->lyxCode() == InsetBase::GRAPHICS_CODE
 496                      || inset->lyxCode() == InsetBase::MATH_CODE
 497                      || inset->lyxCode() == InsetBase::URL_CODE)
 498                     && running_font.isRightToLeft()) {
 499                         os << "\\L{";
 500                         close = true;
 501                 }
 502
 503 #ifdef WITH_WARNINGS
 504 #warning Bug: we can have an empty font change here!
 505 // if there has just been a font change, we are going to close it
 506 // right now, which means stupid latex code like \textsf{}. AFAIK,
 507 // this does not harm dvi output. A minor bug, thus (JMarc)
 508 #endif
 509                 // some insets cannot be inside a font change command
 510                 if (open_font && inset->noFontChange()) {
 511                         column +=running_font.
 512                                 latexWriteEndChanges(os,
 513                                                      basefont,
 514                                                      basefont);
 515                         open_font = false;
 516                         basefont = owner_->getLayoutFont(bparams, outerfont);
 517                         running_font = basefont;
 518                 }
 519
 520                 int tmp = inset->latex(buf, os, runparams);
 521
 522                 if (close)
 523                         os << '}';
 524
 525                 if (tmp) {
 526                         for (int j = 0; j < tmp; ++j) {
 527                                 texrow.newline();
 528                         }
 529                         texrow.start(owner_->id(), i + 1);
 530                         column = 0;
 531                 } else {
 532                         column += os.tellp() - len;
 533                 }
 534         }
 535         break;
 536
 537         default:
 538                 // And now for the special cases within each mode
 539
 540                 switch (c) {
 541                 case '\\':
 542                         os << "\\textbackslash{}";
 543                         column += 15;
 544                         break;
 545
 546                 // The following characters could be written literally in latin1, but they
 547                 // would be wrongly converted on systems where char is signed, so we give
 548                 // the code points.
 549                 // This also makes us independant from the encoding of this source file.
 550                 case 0xb1:    // ± PLUS-MINUS SIGN
 551                 case 0xb2:    // ² SUPERSCRIPT TWO
 552                 case 0xb3:    // ³ SUPERSCRIPT THREE
 553                 case 0xd7:    // × MULTIPLICATION SIGN
 554                 case 0xf7:    // ÷ DIVISION SIGN
 555                 case 0xb9:    // ¹ SUPERSCRIPT ONE
 556                 case 0xac:    // ¬ NOT SIGN
 557                 case 0xb5:    // µ MICRO SIGN
 558                         if ((bparams.inputenc == "latin1" ||
 559                              bparams.inputenc == "latin9") ||
 560                             (bparams.inputenc == "auto" &&
 561                              (font.language()->encoding()->latexName()
 562                               == "latin1" ||
 563                               font.language()->encoding()->latexName()
 564                               == "latin9"))) {
 565                                 os << "\\ensuremath{";
 566                                 os.put(c);
 567                                 os << '}';
 568                                 column += 13;
 569                         } else {
 570                                 os.put(c);
 571                         }
 572                         break;
 573
 574                 case '|': case '<': case '>':
 575                         // In T1 encoding, these characters exist
 576                         if (lyxrc.fontenc == "T1") {
 577                                 os.put(c);
 578                                 //... but we should avoid ligatures
 579                                 if ((c == '>' || c == '<')
 580                                     && i <= size() - 2
 581                                     && getChar(i + 1) == c) {
 582                                         //os << "\\textcompwordmark{}";
 583                                         // Jean-Marc, have a look at
 584                                         // this. I think this works
 585                                         // equally well:
 586                                         os << "\\,{}";
 587                                         // Lgb
 588                                         column += 19;
 589                                 }
 590                                 break;
 591                         }
 592                         // Typewriter font also has them
 593                         if (font.family() == LyXFont::TYPEWRITER_FAMILY) {
 594                                 os.put(c);
 595                                 break;
 596                         }
 597                         // Otherwise, we use what LaTeX
 598                         // provides us.
 599                         switch (c) {
 600                         case '<':
 601                                 os << "\\textless{}";
 602                                 column += 10;
 603                                 break;
 604                         case '>':
 605                                 os << "\\textgreater{}";
 606                                 column += 13;
 607                                 break;
 608                         case '|':
 609                                 os << "\\textbar{}";
 610                                 column += 9;
 611                                 break;
 612                         }
 613                         break;
 614
 615                 case '-': // "--" in Typewriter mode -> "-{}-"
 616                         if (i <= size() - 2
 617                             && getChar(i + 1) == '-'
 618                             && font.family() == LyXFont::TYPEWRITER_FAMILY) {
 619                                 os << "-{}";
 620                                 column += 2;
 621                         } else {
 622                                 os << '-';
 623                         }
 624                         break;
 625
 626                 case '\"':
 627                         os << "\\char`\\\"{}";
 628                         column += 9;
 629                         break;
 630
 631                 case 0xa3:    // £ POUND SIGN
 632                         if (bparams.inputenc == "default") {
 633                                 os << "\\pounds{}";
 634                                 column += 8;
 635                         } else {
 636                                 os.put(c);
 637                         }
 638                         break;
 639
 640                 case '$': case '&':
 641                 case '%': case '#': case '{':
 642                 case '}': case '_':
 643                         os << '\\';
 644                         os.put(c);
 645                         column += 1;
 646                         break;
 647
 648                 case '~':
 649                         os << "\\textasciitilde{}";
 650                         column += 16;
 651                         break;
 652
 653                 case '^':
 654                         os << "\\textasciicircum{}";
 655                         column += 17;
 656                         break;
 657
 658                 case '*': case '[':
 659                         // avoid being mistaken for optional arguments
 660                         os << '{';
 661                         os.put(c);
 662                         os << '}';
 663                         column += 2;
 664                         break;
 665
 666                 case ' ':
 667                         // Blanks are printed before font switching.
 668                         // Sure? I am not! (try nice-latex)
 669                         // I am sure it's correct. LyX might be smarter
 670                         // in the future, but for now, nothing wrong is
 671                         // written. (Asger)
 672                         break;
 673
 674                 default:
 675
 676                         // I assume this is hack treating typewriter as verbatim
 677                         if (font.family() == LyXFont::TYPEWRITER_FAMILY) {
 678                                 if (c != '\0') {
 679                                         os.put(c);
 680                                 }
 681                                 break;
 682                         }
 683
 684                         // LyX, LaTeX etc.
 685
 686                         // FIXME: if we have "LaTeX" with a font
 687                         // change in the middle (before the 'T', then
 688                         // the "TeX" part is still special cased.
 689                         // Really we should only operate this on
 690                         // "words" for some definition of word
 691
 692                         size_t pnr = 0;
 693
 694                         for (; pnr < phrases_nr; ++pnr) {
 695                                 if (isTextAt(special_phrases[pnr].phrase, i)) {
 696                                         os << special_phrases[pnr].macro;
 697                                         i += special_phrases[pnr].phrase.length() - 1;
 698                                         column += special_phrases[pnr].macro.length() - 1;
 699                                         break;
 700                                 }
 701                         }
 702
 703                         if (pnr == phrases_nr && c != '\0') {
 704                                 os.put(c);
 705                         }
 706                         break;
 707                 }
 708         }
 709 }
 710
 711
 712 void Paragraph::Pimpl::validate(LaTeXFeatures & features,
 713                                 LyXLayout const & layout) const
 714 {
 715         BufferParams const & bparams = features.bufferParams();
 716
 717         // check the params.
 718         if (!params.spacing().isDefault())
 719                 features.require("setspace");
 720
 721         // then the layouts
 722         features.useLayout(layout.name());
 723
 724         // then the fonts
 725         Language const * doc_language = bparams.language;
 726
 727         FontList::const_iterator fcit = fontlist.begin();
 728         FontList::const_iterator fend = fontlist.end();
 729         for (; fcit != fend; ++fcit) {
 730                 if (fcit->font().noun() == LyXFont::ON) {
 731                         lyxerr[Debug::LATEX] << "font.noun: "
 732                                              << fcit->font().noun()
 733                                              << endl;
 734                         features.require("noun");
 735                         lyxerr[Debug::LATEX] << "Noun enabled. Font: "
 736                                              << fcit->font().stateText(0)
 737                                              << endl;
 738                 }
 739                 switch (fcit->font().color()) {
 740                 case LColor::none:
 741                 case LColor::inherit:
 742                 case LColor::ignore:
 743                         // probably we should put here all interface colors used for
 744                         // font displaying! For now I just add this ones I know of (Jug)
 745                 case LColor::latex:
 746                 case LColor::note:
 747                         break;
 748                 default:
 749                         features.require("color");
 750                         lyxerr[Debug::LATEX] << "Color enabled. Font: "
 751                                              << fcit->font().stateText(0)
 752                                              << endl;
 753                 }
 754
 755                 Language const * language = fcit->font().language();
 756                 if (language->babel() != doc_language->babel() &&
 757                     language != ignore_language &&
 758                     language != latex_language)
 759                 {
 760                         features.useLanguage(language);
 761                         lyxerr[Debug::LATEX] << "Found language "
 762                                              << language->babel() << endl;
 763                 }
 764         }
 765
 766         if (!params.leftIndent().zero())
 767                 features.require("ParagraphLeftIndent");
 768
 769         // then the insets
 770         InsetList::const_iterator icit = owner_->insetlist.begin();
 771         InsetList::const_iterator iend = owner_->insetlist.end();
 772         for (; icit != iend; ++icit) {
 773                 if (icit->inset) {
 774                         icit->inset->validate(features);
 775                         if (layout.needprotect &&
 776                             icit->inset->lyxCode() == InsetBase::FOOT_CODE)
 777                                 features.require("NeedLyXFootnoteCode");
 778                 }
 779         }
 780
 781         // then the contents
 782         for (pos_type i = 0; i < size() ; ++i) {
 783                 for (size_t pnr = 0; pnr < phrases_nr; ++pnr) {
 784                         if (!special_phrases[pnr].builtin
 785                             && isTextAt(special_phrases[pnr].phrase, i)) {
 786                                 features.require(special_phrases[pnr].phrase);
 787                                 break;
 788                         }
 789                 }
 790         }
 791 }
 792
 793
 794 } // namespace lyx