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 bool Paragraph::Pimpl::isChanged(pos_type start, pos_type end) const
  82 {
  83         BOOST_ASSERT(start >= 0 && start <= size());
  84         BOOST_ASSERT(end > start && end <= size() + 1);
  85
  86         return changes_.isChanged(start, end);
  87 }
  88
  89
  90 bool Paragraph::Pimpl::isMergedOnEndOfParDeletion(bool trackChanges) const {
  91         // keep the logic here in sync with the logic of eraseChars()
  92
  93         if (!trackChanges) {
  94                 return true;
  95         }
  96
  97         Change change = changes_.lookup(size());
  98
  99         return change.type == Change::INSERTED && change.author == 0;
 100 }
 101
 102
 103 void Paragraph::Pimpl::setChange(Change const & change)
 104 {
 105         // beware of the imaginary end-of-par character!
 106         changes_.set(change, 0, size() + 1);
 107
 108         /*
 109          * Propagate the change recursively - but not in case of DELETED!
 110          *
 111          * Imagine that your co-author makes changes in an existing inset. He
 112          * sends your document to you and you come to the conclusion that the
 113          * inset should go completely. If you erase it, LyX must not delete all
 114          * text within the inset. Otherwise, the change tracked insertions of
 115          * your co-author get lost and there is no way to restore them later.
 116          *
 117          * Conclusion: An inset's content should remain untouched if you delete it
 118          */
 119
 120         if (change.type != Change::DELETED) {
 121                 for (pos_type pos = 0; pos < size(); ++pos) {
 122                         if (owner_->isInset(pos)) {
 123                                 owner_->getInset(pos)->setChange(change);
 124                         }
 125                 }
 126         }
 127 }
 128
 129
 130 void Paragraph::Pimpl::setChange(pos_type pos, Change const & change)
 131 {
 132         BOOST_ASSERT(pos >= 0 && pos <= size());
 133
 134         changes_.set(change, pos);
 135
 136         // see comment in setChange(Change const &) above
 137
 138         if (change.type != Change::DELETED &&
 139             pos < size() && owner_->isInset(pos)) {
 140                 owner_->getInset(pos)->setChange(change);
 141         }
 142 }
 143
 144
 145 Change const Paragraph::Pimpl::lookupChange(pos_type pos) const
 146 {
 147         BOOST_ASSERT(pos >= 0 && pos <= size());
 148
 149         return changes_.lookup(pos);
 150 }
 151
 152
 153 void Paragraph::Pimpl::acceptChanges(pos_type start, pos_type end)
 154 {
 155         BOOST_ASSERT(start >= 0 && start <= size());
 156         BOOST_ASSERT(end > start && end <= size() + 1);
 157
 158         for (pos_type pos = start; pos < end; ++pos) {
 159                 switch (lookupChange(pos).type) {
 160                         case Change::UNCHANGED:
 161                                 break;
 162
 163                         case Change::INSERTED:
 164                                 changes_.set(Change(Change::UNCHANGED), pos);
 165                                 break;
 166
 167                         case Change::DELETED:
 168                                 // Suppress access to non-existent
 169                                 // "end-of-paragraph char"
 170                                 if (pos < size()) {
 171                                         eraseChar(pos, false);
 172                                         --end;
 173                                         --pos;
 174                                 }
 175                                 break;
 176                 }
 177
 178                 // also accept changes in nested insets
 179                 if (pos < size() && owner_->isInset(pos)) {
 180                         owner_->getInset(pos)->acceptChanges();
 181                 }
 182         }
 183 }
 184
 185
 186 void Paragraph::Pimpl::rejectChanges(pos_type start, pos_type end)
 187 {
 188         BOOST_ASSERT(start >= 0 && start <= size());
 189         BOOST_ASSERT(end > start && end <= size() + 1);
 190
 191         for (pos_type pos = start; pos < end; ++pos) {
 192                 switch (lookupChange(pos).type) {
 193                         case Change::UNCHANGED:
 194                                 // also reject changes inside of insets
 195                                 if (pos < size() && owner_->isInset(pos)) {
 196                                         owner_->getInset(pos)->rejectChanges();
 197                                 }
 198                                 break;
 199
 200                         case Change::INSERTED:
 201                                 // Suppress access to non-existent
 202                                 // "end-of-paragraph char"
 203                                 if (pos < size()) {
 204                                         eraseChar(pos, false);
 205                                         --end;
 206                                         --pos;
 207                                 }
 208                                 break;
 209
 210                         case Change::DELETED:
 211                                 changes_.set(Change(Change::UNCHANGED), pos);
 212
 213                                 // Do NOT reject changes within a deleted inset!
 214                                 // There may be insertions of a co-author inside of it!
 215
 216                                 break;
 217                 }
 218         }
 219 }
 220
 221
 222 Paragraph::value_type Paragraph::Pimpl::getChar(pos_type pos) const
 223 {
 224         BOOST_ASSERT(pos >= 0 && pos <= size());
 225
 226         return owner_->getChar(pos);
 227 }
 228
 229
 230 void Paragraph::Pimpl::insertChar(pos_type pos, value_type c, Change const & change)
 231 {
 232         BOOST_ASSERT(pos >= 0 && pos <= size());
 233
 234         // track change
 235         changes_.insert(change, pos);
 236
 237         // This is actually very common when parsing buffers (and
 238         // maybe inserting ascii text)
 239         if (pos == size()) {
 240                 // when appending characters, no need to update tables
 241                 owner_->text_.push_back(c);
 242                 return;
 243         }
 244
 245         owner_->text_.insert(owner_->text_.begin() + pos, c);
 246
 247         // Update the font table.
 248         FontTable search_font(pos, LyXFont());
 249         for (FontList::iterator it
 250               = lower_bound(fontlist.begin(), fontlist.end(), search_font, matchFT());
 251              it != fontlist.end(); ++it)
 252         {
 253                 it->pos(it->pos() + 1);
 254         }
 255
 256         // Update the insets
 257         owner_->insetlist.increasePosAfterPos(pos);
 258 }
 259
 260
 261 void Paragraph::Pimpl::insertInset(pos_type pos, InsetBase * inset,
 262                                    Change const & change)
 263 {
 264         BOOST_ASSERT(inset);
 265         BOOST_ASSERT(pos >= 0 && pos <= size());
 266
 267         insertChar(pos, META_INSET, change);
 268         BOOST_ASSERT(owner_->text_[pos] == META_INSET);
 269
 270         // Add a new entry in the insetlist.
 271         owner_->insetlist.insert(inset, pos);
 272 }
 273
 274
 275 bool Paragraph::Pimpl::eraseChar(pos_type pos, bool trackChanges)
 276 {
 277         BOOST_ASSERT(pos >= 0 && pos <= size());
 278
 279         // keep the logic here in sync with the logic of isMergedOnEndOfParDeletion()
 280
 281         if (trackChanges) {
 282                 Change change = changes_.lookup(pos);
 283
 284                 // set the character to DELETED if
 285                 //  a) it was previously unchanged or
 286                 //  b) it was inserted by a co-author
 287
 288                 if (change.type == Change::UNCHANGED ||
 289                     (change.type == Change::INSERTED && change.author != 0)) {
 290                         setChange(pos, Change(Change::DELETED));
 291                         return false;
 292                 }
 293
 294                 if (change.type == Change::DELETED)
 295                         return false;
 296         }
 297
 298         // Don't physically access the imaginary end-of-paragraph character.
 299         // eraseChar() can only mark it as DELETED. A physical deletion of
 300         // end-of-par must be handled externally.
 301         if (pos == size()) {
 302                 return false;
 303         }
 304
 305         // track change
 306         changes_.erase(pos);
 307
 308         // if it is an inset, delete the inset entry
 309         if (owner_->text_[pos] == Paragraph::META_INSET) {
 310                 owner_->insetlist.erase(pos);
 311         }
 312
 313         owner_->text_.erase(owner_->text_.begin() + pos);
 314
 315         // Erase entries in the tables.
 316         FontTable search_font(pos, LyXFont());
 317
 318         FontList::iterator it =
 319                 lower_bound(fontlist.begin(),
 320                             fontlist.end(),
 321                             search_font, matchFT());
 322         if (it != fontlist.end() && it->pos() == pos &&
 323             (pos == 0 ||
 324              (it != fontlist.begin()
 325               && boost::prior(it)->pos() == pos - 1))) {
 326                 // If it is a multi-character font
 327                 // entry, we just make it smaller
 328                 // (see update below), otherwise we
 329                 // should delete it.
 330                 unsigned int const i = it - fontlist.begin();
 331                 fontlist.erase(fontlist.begin() + i);
 332                 it = fontlist.begin() + i;
 333                 if (i > 0 && i < fontlist.size() &&
 334                     fontlist[i - 1].font() == fontlist[i].font()) {
 335                         fontlist.erase(fontlist.begin() + i - 1);
 336                         it = fontlist.begin() + i - 1;
 337                 }
 338         }
 339
 340         // Update all other entries
 341         FontList::iterator fend = fontlist.end();
 342         for (; it != fend; ++it)
 343                 it->pos(it->pos() - 1);
 344
 345         // Update the insetlist
 346         owner_->insetlist.decreasePosAfterPos(pos);
 347
 348         return true;
 349 }
 350
 351
 352 int Paragraph::Pimpl::eraseChars(pos_type start, pos_type end, bool trackChanges)
 353 {
 354         BOOST_ASSERT(start >= 0 && start <= size());
 355         BOOST_ASSERT(end >= start && end <= size() + 1);
 356
 357         pos_type i = start;
 358         for (pos_type count = end - start; count; --count) {
 359                 if (!eraseChar(i, trackChanges))
 360                         ++i;
 361         }
 362         return end - i;
 363 }
 364
 365
 366 void Paragraph::Pimpl::simpleTeXBlanks(odocstream & os, TexRow & texrow,
 367                                        pos_type const i,
 368                                        unsigned int & column,
 369                                        LyXFont const & font,
 370                                        LyXLayout const & style)
 371 {
 372         if (style.pass_thru)
 373                 return;
 374
 375         if (column > lyxrc.ascii_linelen
 376             && i
 377             && getChar(i - 1) != ' '
 378             && (i < size() - 1)
 379             // same in FreeSpacing mode
 380             && !owner_->isFreeSpacing()
 381             // In typewriter mode, we want to avoid
 382             // ! . ? : at the end of a line
 383             && !(font.family() == LyXFont::TYPEWRITER_FAMILY
 384                  && (getChar(i - 1) == '.'
 385                      || getChar(i - 1) == '?'
 386                      || getChar(i - 1) == ':'
 387                      || getChar(i - 1) == '!'))) {
 388                 os << '\n';
 389                 texrow.newline();
 390                 texrow.start(owner_->id(), i + 1);
 391                 column = 0;
 392         } else if (style.free_spacing) {
 393                 os << '~';
 394         } else {
 395                 os << ' ';
 396         }
 397 }
 398
 399
 400 bool Paragraph::Pimpl::isTextAt(string const & str, pos_type pos) const
 401 {
 402         pos_type const len = str.length();
 403
 404         // is the paragraph large enough?
 405         if (pos + len > size())
 406                 return false;
 407
 408         // does the wanted text start at point?
 409         for (string::size_type i = 0; i < str.length(); ++i) {
 410                 if (str[i] != owner_->text_[pos + i])
 411                         return false;
 412         }
 413
 414         // is there a font change in middle of the word?
 415         FontList::const_iterator cit = fontlist.begin();
 416         FontList::const_iterator end = fontlist.end();
 417         for (; cit != end; ++cit) {
 418                 if (cit->pos() >= pos)
 419                         break;
 420         }
 421         if (cit != end && pos + len - 1 > cit->pos())
 422                 return false;
 423
 424         return true;
 425 }
 426
 427
 428 void Paragraph::Pimpl::simpleTeXSpecialChars(Buffer const & buf,
 429                                              BufferParams const & bparams,
 430                                              odocstream & os,
 431                                              TexRow & texrow,
 432                                              OutputParams const & runparams,
 433                                              LyXFont & font,
 434                                              LyXFont & running_font,
 435                                              LyXFont & basefont,
 436                                              LyXFont const & outerfont,
 437                                              bool & open_font,
 438                                              Change::Type & running_change,
 439                                              LyXLayout const & style,
 440                                              pos_type & i,
 441                                              unsigned int & column,
 442                                              value_type const c)
 443 {
 444         if (style.pass_thru) {
 445                 if (c != Paragraph::META_INSET) {
 446                         if (c != '\0')
 447                                 os.put(c);
 448                 } else
 449                         owner_->getInset(i)->plaintext(buf, os, runparams);
 450                 return;
 451         }
 452
 453         // Two major modes:  LaTeX or plain
 454         // Handle here those cases common to both modes
 455         // and then split to handle the two modes separately.
 456         switch (c) {
 457         case Paragraph::META_INSET: {
 458                 InsetBase * inset = owner_->getInset(i);
 459
 460                 // FIXME: remove this check
 461                 if (!inset)
 462                         break;
 463
 464                 // FIXME: move this to InsetNewline::latex
 465                 if (inset->lyxCode() == InsetBase::NEWLINE_CODE) {
 466                         // newlines are handled differently here than
 467                         // the default in simpleTeXSpecialChars().
 468                         if (!style.newline_allowed) {
 469                                 os << '\n';
 470                         } else {
 471                                 if (open_font) {
 472                                         column += running_font.latexWriteEndChanges(os, basefont, basefont);
 473                                         open_font = false;
 474                                 }
 475                                 basefont = owner_->getLayoutFont(bparams, outerfont);
 476                                 running_font = basefont;
 477
 478                                 if (font.family() == LyXFont::TYPEWRITER_FAMILY)
 479                                         os << '~';
 480
 481                                 if (runparams.moving_arg)
 482                                         os << "\\protect ";
 483
 484                                 os << "\\\\\n";
 485                         }
 486                         texrow.newline();
 487                         texrow.start(owner_->id(), i + 1);
 488                         column = 0;
 489                         break;
 490                 }
 491
 492                 // output change tracking marks only if desired,
 493                 // if dvipost is installed,
 494                 // and with dvi/ps (other formats don't work)
 495                 LaTeXFeatures features(buf, bparams, runparams);
 496                 bool const output = bparams.outputChanges
 497                         && runparams.flavor == OutputParams::LATEX
 498                         && features.isAvailable("dvipost");
 499
 500                 if (inset->canTrackChanges()) {
 501                         column += Changes::latexMarkChange(os, running_change,
 502                                 Change::UNCHANGED, output);
 503                         running_change = Change::UNCHANGED;
 504                 }
 505
 506                 bool close = false;
 507                 odocstream::pos_type const len = os.tellp();
 508
 509                 if ((inset->lyxCode() == InsetBase::GRAPHICS_CODE
 510                      || inset->lyxCode() == InsetBase::MATH_CODE
 511                      || inset->lyxCode() == InsetBase::URL_CODE)
 512                     && running_font.isRightToLeft()) {
 513                         os << "\\L{";
 514                         close = true;
 515                 }
 516
 517 #ifdef WITH_WARNINGS
 518 #warning Bug: we can have an empty font change here!
 519 // if there has just been a font change, we are going to close it
 520 // right now, which means stupid latex code like \textsf{}. AFAIK,
 521 // this does not harm dvi output. A minor bug, thus (JMarc)
 522 #endif
 523                 // some insets cannot be inside a font change command
 524                 if (open_font && inset->noFontChange()) {
 525                         column +=running_font.
 526                                 latexWriteEndChanges(os,
 527                                                      basefont,
 528                                                      basefont);
 529                         open_font = false;
 530                         basefont = owner_->getLayoutFont(bparams, outerfont);
 531                         running_font = basefont;
 532                 }
 533
 534                 int tmp = inset->latex(buf, os, runparams);
 535
 536                 if (close)
 537                         os << '}';
 538
 539                 if (tmp) {
 540                         for (int j = 0; j < tmp; ++j) {
 541                                 texrow.newline();
 542                         }
 543                         texrow.start(owner_->id(), i + 1);
 544                         column = 0;
 545                 } else {
 546                         column += os.tellp() - len;
 547                 }
 548         }
 549         break;
 550
 551         default:
 552                 // And now for the special cases within each mode
 553
 554                 switch (c) {
 555                 case '\\':
 556                         os << "\\textbackslash{}";
 557                         column += 15;
 558                         break;
 559
 560                 // The following characters could be written literally in latin1, but they
 561                 // would be wrongly converted on systems where char is signed, so we give
 562                 // the code points.
 563                 // This also makes us independant from the encoding of this source file.
 564                 case 0xb1:    // ± PLUS-MINUS SIGN
 565                 case 0xb2:    // ² SUPERSCRIPT TWO
 566                 case 0xb3:    // ³ SUPERSCRIPT THREE
 567                 case 0xd7:    // × MULTIPLICATION SIGN
 568                 case 0xf7:    // ÷ DIVISION SIGN
 569                 case 0xb9:    // ¹ SUPERSCRIPT ONE
 570                 case 0xac:    // ¬ NOT SIGN
 571                 case 0xb5:    // µ MICRO SIGN
 572                         if ((bparams.inputenc == "latin1" ||
 573                              bparams.inputenc == "latin9") ||
 574                             (bparams.inputenc == "auto" &&
 575                              (font.language()->encoding()->latexName()
 576                               == "latin1" ||
 577                               font.language()->encoding()->latexName()
 578                               == "latin9"))) {
 579                                 os << "\\ensuremath{";
 580                                 os.put(c);
 581                                 os << '}';
 582                                 column += 13;
 583                         } else {
 584                                 os.put(c);
 585                         }
 586                         break;
 587
 588                 case '|': case '<': case '>':
 589                         // In T1 encoding, these characters exist
 590                         if (lyxrc.fontenc == "T1") {
 591                                 os.put(c);
 592                                 //... but we should avoid ligatures
 593                                 if ((c == '>' || c == '<')
 594                                     && i <= size() - 2
 595                                     && getChar(i + 1) == c) {
 596                                         //os << "\\textcompwordmark{}";
 597                                         // Jean-Marc, have a look at
 598                                         // this. I think this works
 599                                         // equally well:
 600                                         os << "\\,{}";
 601                                         // Lgb
 602                                         column += 19;
 603                                 }
 604                                 break;
 605                         }
 606                         // Typewriter font also has them
 607                         if (font.family() == LyXFont::TYPEWRITER_FAMILY) {
 608                                 os.put(c);
 609                                 break;
 610                         }
 611                         // Otherwise, we use what LaTeX
 612                         // provides us.
 613                         switch (c) {
 614                         case '<':
 615                                 os << "\\textless{}";
 616                                 column += 10;
 617                                 break;
 618                         case '>':
 619                                 os << "\\textgreater{}";
 620                                 column += 13;
 621                                 break;
 622                         case '|':
 623                                 os << "\\textbar{}";
 624                                 column += 9;
 625                                 break;
 626                         }
 627                         break;
 628
 629                 case '-': // "--" in Typewriter mode -> "-{}-"
 630                         if (i <= size() - 2
 631                             && getChar(i + 1) == '-'
 632                             && font.family() == LyXFont::TYPEWRITER_FAMILY) {
 633                                 os << "-{}";
 634                                 column += 2;
 635                         } else {
 636                                 os << '-';
 637                         }
 638                         break;
 639
 640                 case '\"':
 641                         os << "\\char`\\\"{}";
 642                         column += 9;
 643                         break;
 644
 645                 case 0xa3:    // £ POUND SIGN
 646                         if (bparams.inputenc == "default") {
 647                                 os << "\\pounds{}";
 648                                 column += 8;
 649                         } else {
 650                                 os.put(c);
 651                         }
 652                         break;
 653
 654                 case '$': case '&':
 655                 case '%': case '#': case '{':
 656                 case '}': case '_':
 657                         os << '\\';
 658                         os.put(c);
 659                         column += 1;
 660                         break;
 661
 662                 case '~':
 663                         os << "\\textasciitilde{}";
 664                         column += 16;
 665                         break;
 666
 667                 case '^':
 668                         os << "\\textasciicircum{}";
 669                         column += 17;
 670                         break;
 671
 672                 case '*': case '[':
 673                         // avoid being mistaken for optional arguments
 674                         os << '{';
 675                         os.put(c);
 676                         os << '}';
 677                         column += 2;
 678                         break;
 679
 680                 case ' ':
 681                         // Blanks are printed before font switching.
 682                         // Sure? I am not! (try nice-latex)
 683                         // I am sure it's correct. LyX might be smarter
 684                         // in the future, but for now, nothing wrong is
 685                         // written. (Asger)
 686                         break;
 687
 688                 default:
 689
 690                         // I assume this is hack treating typewriter as verbatim
 691                         if (font.family() == LyXFont::TYPEWRITER_FAMILY) {
 692                                 if (c != '\0') {
 693                                         os.put(c);
 694                                 }
 695                                 break;
 696                         }
 697
 698                         // LyX, LaTeX etc.
 699
 700                         // FIXME: if we have "LaTeX" with a font
 701                         // change in the middle (before the 'T', then
 702                         // the "TeX" part is still special cased.
 703                         // Really we should only operate this on
 704                         // "words" for some definition of word
 705
 706                         size_t pnr = 0;
 707
 708                         for (; pnr < phrases_nr; ++pnr) {
 709                                 if (isTextAt(special_phrases[pnr].phrase, i)) {
 710                                         os << special_phrases[pnr].macro;
 711                                         i += special_phrases[pnr].phrase.length() - 1;
 712                                         column += special_phrases[pnr].macro.length() - 1;
 713                                         break;
 714                                 }
 715                         }
 716
 717                         if (pnr == phrases_nr && c != '\0') {
 718                                 os.put(c);
 719                         }
 720                         break;
 721                 }
 722         }
 723 }
 724
 725
 726 void Paragraph::Pimpl::validate(LaTeXFeatures & features,
 727                                 LyXLayout const & layout) const
 728 {
 729         BufferParams const & bparams = features.bufferParams();
 730
 731         // check the params.
 732         if (!params.spacing().isDefault())
 733                 features.require("setspace");
 734
 735         // then the layouts
 736         features.useLayout(layout.name());
 737
 738         // then the fonts
 739         Language const * doc_language = bparams.language;
 740
 741         FontList::const_iterator fcit = fontlist.begin();
 742         FontList::const_iterator fend = fontlist.end();
 743         for (; fcit != fend; ++fcit) {
 744                 if (fcit->font().noun() == LyXFont::ON) {
 745                         lyxerr[Debug::LATEX] << "font.noun: "
 746                                              << fcit->font().noun()
 747                                              << endl;
 748                         features.require("noun");
 749                         lyxerr[Debug::LATEX] << "Noun enabled. Font: "
 750                                              << fcit->font().stateText(0)
 751                                              << endl;
 752                 }
 753                 switch (fcit->font().color()) {
 754                 case LColor::none:
 755                 case LColor::inherit:
 756                 case LColor::ignore:
 757                         // probably we should put here all interface colors used for
 758                         // font displaying! For now I just add this ones I know of (Jug)
 759                 case LColor::latex:
 760                 case LColor::note:
 761                         break;
 762                 default:
 763                         features.require("color");
 764                         lyxerr[Debug::LATEX] << "Color enabled. Font: "
 765                                              << fcit->font().stateText(0)
 766                                              << endl;
 767                 }
 768
 769                 Language const * language = fcit->font().language();
 770                 if (language->babel() != doc_language->babel() &&
 771                     language != ignore_language &&
 772                     language != latex_language)
 773                 {
 774                         features.useLanguage(language);
 775                         lyxerr[Debug::LATEX] << "Found language "
 776                                              << language->babel() << endl;
 777                 }
 778         }
 779
 780         if (!params.leftIndent().zero())
 781                 features.require("ParagraphLeftIndent");
 782
 783         // then the insets
 784         InsetList::const_iterator icit = owner_->insetlist.begin();
 785         InsetList::const_iterator iend = owner_->insetlist.end();
 786         for (; icit != iend; ++icit) {
 787                 if (icit->inset) {
 788                         icit->inset->validate(features);
 789                         if (layout.needprotect &&
 790                             icit->inset->lyxCode() == InsetBase::FOOT_CODE)
 791                                 features.require("NeedLyXFootnoteCode");
 792                 }
 793         }
 794
 795         // then the contents
 796         for (pos_type i = 0; i < size() ; ++i) {
 797                 for (size_t pnr = 0; pnr < phrases_nr; ++pnr) {
 798                         if (!special_phrases[pnr].builtin
 799                             && isTextAt(special_phrases[pnr].phrase, i)) {
 800                                 features.require(special_phrases[pnr].phrase);
 801                                 break;
 802                         }
 803                 }
 804         }
 805 }
 806
 807
 808 } // namespace lyx