src/paragraph.C

   1 /**
   2  * \file paragraph.C
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author Asger Alstrup
   7  * \author Lars Gullik Bjønnes
   8  * \author Jean-Marc Lasgouttes
   9  * \author Angus Leeming
  10  * \author John Levon
  11  * \author André Pönitz
  12  * \author Dekel Tsur
  13  * \author Jürgen Vigna
  14  *
  15  * Full author contact details are available in file CREDITS.
  16  */
  17
  18 #include <config.h>
  19
  20 #include "paragraph.h"
  21 #include "paragraph_pimpl.h"
  22
  23 #include "buffer.h"
  24 #include "bufferparams.h"
  25 #include "counters.h"
  26 #include "encoding.h"
  27 #include "debug.h"
  28 #include "gettext.h"
  29 #include "language.h"
  30 #include "lyxfont.h"
  31 #include "lyxrc.h"
  32 #include "lyxrow.h"
  33 #include "outputparams.h"
  34 #include "paragraph_funcs.h"
  35 #include "ParagraphList_fwd.h"
  36 #include "sgml.h"
  37 #include "texrow.h"
  38 #include "vspace.h"
  39
  40 #include "insets/insetbibitem.h"
  41 #include "insets/insetoptarg.h"
  42
  43 #include "support/lstrings.h"
  44 #include "support/textutils.h"
  45 #include "support/convert.h"
  46
  47 #include <boost/tuple/tuple.hpp>
  48 #include <boost/bind.hpp>
  49
  50 #include <list>
  51 #include <stack>
  52 #include <sstream>
  53
  54 using lyx::pos_type;
  55
  56 using lyx::support::subst;
  57
  58 using std::distance;
  59 using std::endl;
  60 using std::list;
  61 using std::stack;
  62 using std::string;
  63 using std::ostream;
  64 using std::ostringstream;
  65
  66
  67 ParagraphList::ParagraphList()
  68 {}
  69
  70
  71 Paragraph::Paragraph()
  72         : begin_of_body_(0), pimpl_(new Paragraph::Pimpl(this))
  73 {
  74         itemdepth = 0;
  75         params().clear();
  76 }
  77
  78
  79 Paragraph::Paragraph(Paragraph const & par)
  80         :       itemdepth(par.itemdepth), insetlist(par.insetlist),
  81                 dim_(par.dim_),
  82                 rows_(par.rows_), layout_(par.layout_),
  83                 text_(par.text_), begin_of_body_(par.begin_of_body_),
  84           pimpl_(new Paragraph::Pimpl(*par.pimpl_, this))
  85 {
  86         //lyxerr << "Paragraph::Paragraph(Paragraph const&)" << endl;
  87         InsetList::iterator it = insetlist.begin();
  88         InsetList::iterator end = insetlist.end();
  89         for (; it != end; ++it)
  90                 it->inset = it->inset->clone().release();
  91 }
  92
  93
  94 Paragraph & Paragraph::operator=(Paragraph const & par)
  95 {
  96         // needed as we will destroy the pimpl_ before copying it
  97         if (&par != this) {
  98                 itemdepth = par.itemdepth;
  99
 100                 insetlist = par.insetlist;
 101                 InsetList::iterator it = insetlist.begin();
 102                 InsetList::iterator end = insetlist.end();
 103                 for (; it != end; ++it)
 104                         it->inset = it->inset->clone().release();
 105
 106                 rows_ = par.rows_;
 107                 dim_ = par.dim_;
 108                 layout_ = par.layout();
 109                 text_ = par.text_;
 110                 begin_of_body_ = par.begin_of_body_;
 111
 112                 delete pimpl_;
 113                 pimpl_ = new Pimpl(*par.pimpl_, this);
 114         }
 115         return *this;
 116 }
 117
 118
 119 Paragraph::~Paragraph()
 120 {
 121         delete pimpl_;
 122         //
 123         //lyxerr << "Paragraph::paragraph_id = "
 124         //       << Paragraph::paragraph_id << endl;
 125 }
 126
 127
 128 void Paragraph::write(Buffer const & buf, ostream & os,
 129                           BufferParams const & bparams,
 130                           depth_type & dth) const
 131 {
 132         // The beginning or end of a deeper (i.e. nested) area?
 133         if (dth != params().depth()) {
 134                 if (params().depth() > dth) {
 135                         while (params().depth() > dth) {
 136                                 os << "\n\\begin_deeper";
 137                                 ++dth;
 138                         }
 139                 } else {
 140                         while (params().depth() < dth) {
 141                                 os << "\n\\end_deeper";
 142                                 --dth;
 143                         }
 144                 }
 145         }
 146
 147         // First write the layout
 148         os << "\n\\begin_layout " << layout()->name() << '\n';
 149
 150         params().write(os);
 151
 152         LyXFont font1(LyXFont::ALL_INHERIT, bparams.language);
 153
 154         Change running_change = Change(Change::UNCHANGED);
 155         lyx::time_type const curtime(lyx::current_time());
 156
 157         int column = 0;
 158         for (pos_type i = 0; i < size(); ++i) {
 159
 160                 Change change = pimpl_->lookupChangeFull(i);
 161                 Changes::lyxMarkChange(os, column, curtime, running_change, change);
 162                 running_change = change;
 163
 164                 // Write font changes
 165                 LyXFont font2 = getFontSettings(bparams, i);
 166                 if (font2 != font1) {
 167                         font2.lyxWriteChanges(font1, os);
 168                         column = 0;
 169                         font1 = font2;
 170                 }
 171
 172                 value_type const c = getChar(i);
 173                 switch (c) {
 174                 case META_INSET:
 175                 {
 176                         InsetBase const * inset = getInset(i);
 177                         if (inset)
 178                                 if (inset->directWrite()) {
 179                                         // international char, let it write
 180                                         // code directly so it's shorter in
 181                                         // the file
 182                                         inset->write(buf, os);
 183                                 } else {
 184                                         if (i)
 185                                                 os << '\n';
 186                                         os << "\\begin_inset ";
 187                                         inset->write(buf, os);
 188                                         os << "\n\\end_inset\n\n";
 189                                         column = 0;
 190                                 }
 191                 }
 192                 break;
 193                 case '\\':
 194                         os << "\n\\backslash\n";
 195                         column = 0;
 196                         break;
 197                 case '.':
 198                         if (i + 1 < size() && getChar(i + 1) == ' ') {
 199                                 os << ".\n";
 200                                 column = 0;
 201                         } else
 202                                 os << '.';
 203                         break;
 204                 default:
 205                         if ((column > 70 && c == ' ')
 206                             || column > 79) {
 207                                 os << '\n';
 208                                 column = 0;
 209                         }
 210                         // this check is to amend a bug. LyX sometimes
 211                         // inserts '\0' this could cause problems.
 212                         if (c != '\0')
 213                                 os << c;
 214                         else
 215                                 lyxerr << "ERROR (Paragraph::writeFile):"
 216                                         " NULL char in structure." << endl;
 217                         ++column;
 218                         break;
 219                 }
 220         }
 221
 222         // to make reading work properly
 223         if (!size()) {
 224                 running_change = pimpl_->lookupChange(0);
 225                 Changes::lyxMarkChange(os, column, curtime,
 226                         Change(Change::UNCHANGED), running_change);
 227         }
 228         Changes::lyxMarkChange(os, column, curtime,
 229                 running_change, Change(Change::UNCHANGED));
 230
 231         os << "\n\\end_layout\n";
 232 }
 233
 234
 235 void Paragraph::validate(LaTeXFeatures & features) const
 236 {
 237         pimpl_->validate(features, *layout());
 238 }
 239
 240
 241 void Paragraph::eraseIntern(lyx::pos_type pos)
 242 {
 243         pimpl_->eraseIntern(pos);
 244 }
 245
 246
 247 bool Paragraph::erase(pos_type pos)
 248 {
 249         return pimpl_->erase(pos);
 250 }
 251
 252
 253 int Paragraph::erase(pos_type start, pos_type end)
 254 {
 255         return pimpl_->erase(start, end);
 256 }
 257
 258
 259 void Paragraph::insert(pos_type start, string const & str,
 260                        LyXFont const & font)
 261 {
 262         int size = str.size();
 263         for (int i = 0 ; i < size ; ++i)
 264                 insertChar(start + i, str[i], font);
 265 }
 266
 267
 268 bool Paragraph::checkInsertChar(LyXFont &)
 269 {
 270         return true;
 271 }
 272
 273
 274 void Paragraph::insertChar(pos_type pos, Paragraph::value_type c,
 275                            Change change)
 276 {
 277         pimpl_->insertChar(pos, c, change);
 278 }
 279
 280
 281 void Paragraph::insertChar(pos_type pos, Paragraph::value_type c,
 282                            LyXFont const & font, Change change)
 283 {
 284         pimpl_->insertChar(pos, c, change);
 285         setFont(pos, font);
 286 }
 287
 288
 289 void Paragraph::insertInset(pos_type pos, InsetBase * inset, Change change)
 290 {
 291         pimpl_->insertInset(pos, inset, change);
 292 }
 293
 294
 295 void Paragraph::insertInset(pos_type pos, InsetBase * inset,
 296                             LyXFont const & font, Change change)
 297 {
 298         pimpl_->insertInset(pos, inset, change);
 299         setFont(pos, font);
 300 }
 301
 302
 303 bool Paragraph::insetAllowed(InsetBase_code code)
 304 {
 305         return !pimpl_->inset_owner || pimpl_->inset_owner->insetAllowed(code);
 306 }
 307
 308
 309 InsetBase * Paragraph::getInset(pos_type pos)
 310 {
 311         BOOST_ASSERT(pos < size());
 312         return insetlist.get(pos);
 313 }
 314
 315
 316 InsetBase const * Paragraph::getInset(pos_type pos) const
 317 {
 318         BOOST_ASSERT(pos < size());
 319         return insetlist.get(pos);
 320 }
 321
 322
 323 // Gets uninstantiated font setting at position.
 324 LyXFont const Paragraph::getFontSettings(BufferParams const & bparams,
 325                                          pos_type pos) const
 326 {
 327         if (pos > size()) {
 328                 lyxerr << " pos: " << pos << " size: " << size() << endl;
 329                 BOOST_ASSERT(pos <= size());
 330         }
 331
 332         Pimpl::FontList::const_iterator cit = pimpl_->fontlist.begin();
 333         Pimpl::FontList::const_iterator end = pimpl_->fontlist.end();
 334         for (; cit != end; ++cit)
 335                 if (cit->pos() >= pos)
 336                         break;
 337
 338         if (cit != end)
 339                 return cit->font();
 340
 341         if (pos == size() && !empty())
 342                 return getFontSettings(bparams, pos - 1);
 343
 344         return LyXFont(LyXFont::ALL_INHERIT, getParLanguage(bparams));
 345 }
 346
 347
 348 lyx::pos_type Paragraph::getEndPosOfFontSpan(lyx::pos_type pos) const
 349 {
 350         BOOST_ASSERT(pos <= size());
 351
 352         Pimpl::FontList::const_iterator cit = pimpl_->fontlist.begin();
 353         Pimpl::FontList::const_iterator end = pimpl_->fontlist.end();
 354         for (; cit != end; ++cit)
 355                 if (cit->pos() >= pos)
 356                         return cit->pos();
 357
 358         // This should not happen, but if so, we take no chances.
 359         //lyxerr << "Paragraph::getEndPosOfFontSpan: This should not happen!"
 360         //      << endl;
 361         return pos;
 362 }
 363
 364
 365 // Gets uninstantiated font setting at position 0
 366 LyXFont const Paragraph::getFirstFontSettings() const
 367 {
 368         if (!empty() && !pimpl_->fontlist.empty())
 369                 return pimpl_->fontlist[0].font();
 370
 371         return LyXFont(LyXFont::ALL_INHERIT);
 372 }
 373
 374
 375 // Gets the fully instantiated font at a given position in a paragraph
 376 // This is basically the same function as LyXText::GetFont() in text2.C.
 377 // The difference is that this one is used for generating the LaTeX file,
 378 // and thus cosmetic "improvements" are disallowed: This has to deliver
 379 // the true picture of the buffer. (Asger)
 380 LyXFont const Paragraph::getFont(BufferParams const & bparams, pos_type pos,
 381                                  LyXFont const & outerfont) const
 382 {
 383         BOOST_ASSERT(pos >= 0);
 384
 385         LyXLayout_ptr const & lout = layout();
 386
 387         pos_type const body_pos = beginOfBody();
 388
 389         LyXFont layoutfont;
 390         if (pos < body_pos)
 391                 layoutfont = lout->labelfont;
 392         else
 393                 layoutfont = lout->font;
 394
 395         LyXFont font = getFontSettings(bparams, pos);
 396         font.realize(layoutfont);
 397         font.realize(outerfont);
 398         font.realize(bparams.getLyXTextClass().defaultfont());
 399
 400         return font;
 401 }
 402
 403
 404 LyXFont const Paragraph::getLabelFont
 405         (BufferParams const & bparams, LyXFont const & outerfont) const
 406 {
 407         LyXFont tmpfont = layout()->labelfont;
 408         tmpfont.setLanguage(getParLanguage(bparams));
 409         tmpfont.realize(outerfont);
 410         tmpfont.realize(bparams.getLyXTextClass().defaultfont());
 411         return tmpfont;
 412 }
 413
 414
 415 LyXFont const Paragraph::getLayoutFont
 416         (BufferParams const & bparams, LyXFont const & outerfont) const
 417 {
 418         LyXFont tmpfont = layout()->font;
 419         tmpfont.setLanguage(getParLanguage(bparams));
 420         tmpfont.realize(outerfont);
 421         tmpfont.realize(bparams.getLyXTextClass().defaultfont());
 422         return tmpfont;
 423 }
 424
 425
 426 /// Returns the height of the highest font in range
 427 LyXFont_size Paragraph::highestFontInRange
 428         (pos_type startpos, pos_type endpos, LyXFont_size def_size) const
 429 {
 430         if (pimpl_->fontlist.empty())
 431                 return def_size;
 432
 433         Pimpl::FontList::const_iterator end_it = pimpl_->fontlist.begin();
 434         Pimpl::FontList::const_iterator const end = pimpl_->fontlist.end();
 435         for (; end_it != end; ++end_it) {
 436                 if (end_it->pos() >= endpos)
 437                         break;
 438         }
 439
 440         if (end_it != end)
 441                 ++end_it;
 442
 443         Pimpl::FontList::const_iterator cit = pimpl_->fontlist.begin();
 444         for (; cit != end; ++cit) {
 445                 if (cit->pos() >= startpos)
 446                         break;
 447         }
 448
 449         LyXFont::FONT_SIZE maxsize = LyXFont::SIZE_TINY;
 450         for (; cit != end_it; ++cit) {
 451                 LyXFont::FONT_SIZE size = cit->font().size();
 452                 if (size == LyXFont::INHERIT_SIZE)
 453                         size = def_size;
 454                 if (size > maxsize && size <= LyXFont::SIZE_HUGER)
 455                         maxsize = size;
 456         }
 457         return maxsize;
 458 }
 459
 460
 461 Paragraph::value_type
 462 Paragraph::getUChar(BufferParams const & bparams, pos_type pos) const
 463 {
 464         value_type c = getChar(pos);
 465         if (!lyxrc.rtl_support)
 466                 return c;
 467
 468         value_type uc = c;
 469         switch (c) {
 470         case '(':
 471                 uc = ')';
 472                 break;
 473         case ')':
 474                 uc = '(';
 475                 break;
 476         case '[':
 477                 uc = ']';
 478                 break;
 479         case ']':
 480                 uc = '[';
 481                 break;
 482         case '{':
 483                 uc = '}';
 484                 break;
 485         case '}':
 486                 uc = '{';
 487                 break;
 488         case '<':
 489                 uc = '>';
 490                 break;
 491         case '>':
 492                 uc = '<';
 493                 break;
 494         }
 495         if (uc != c && getFontSettings(bparams, pos).isRightToLeft())
 496                 return uc;
 497         else
 498                 return c;
 499 }
 500
 501
 502 void Paragraph::setFont(pos_type pos, LyXFont const & font)
 503 {
 504         BOOST_ASSERT(pos <= size());
 505
 506         // First, reduce font against layout/label font
 507         // Update: The setCharFont() routine in text2.C already
 508         // reduces font, so we don't need to do that here. (Asger)
 509         // No need to simplify this because it will disappear
 510         // in a new kernel. (Asger)
 511         // Next search font table
 512
 513         Pimpl::FontList::iterator beg = pimpl_->fontlist.begin();
 514         Pimpl::FontList::iterator it = beg;
 515         Pimpl::FontList::iterator endit = pimpl_->fontlist.end();
 516         for (; it != endit; ++it) {
 517                 if (it->pos() >= pos)
 518                         break;
 519         }
 520         unsigned int i = distance(beg, it);
 521         bool notfound = (it == endit);
 522
 523         if (!notfound && pimpl_->fontlist[i].font() == font)
 524                 return;
 525
 526         bool begin = pos == 0 || notfound ||
 527                 (i > 0 && pimpl_->fontlist[i - 1].pos() == pos - 1);
 528         // Is position pos is a beginning of a font block?
 529         bool end = !notfound && pimpl_->fontlist[i].pos() == pos;
 530         // Is position pos is the end of a font block?
 531         if (begin && end) { // A single char block
 532                 if (i + 1 < pimpl_->fontlist.size() &&
 533                     pimpl_->fontlist[i + 1].font() == font) {
 534                         // Merge the singleton block with the next block
 535                         pimpl_->fontlist.erase(pimpl_->fontlist.begin() + i);
 536                         if (i > 0 && pimpl_->fontlist[i - 1].font() == font)
 537                                 pimpl_->fontlist.erase(pimpl_->fontlist.begin() + i - 1);
 538                 } else if (i > 0 && pimpl_->fontlist[i - 1].font() == font) {
 539                         // Merge the singleton block with the previous block
 540                         pimpl_->fontlist[i - 1].pos(pos);
 541                         pimpl_->fontlist.erase(pimpl_->fontlist.begin() + i);
 542                 } else
 543                         pimpl_->fontlist[i].font(font);
 544         } else if (begin) {
 545                 if (i > 0 && pimpl_->fontlist[i - 1].font() == font)
 546                         pimpl_->fontlist[i - 1].pos(pos);
 547                 else
 548                         pimpl_->fontlist.insert(pimpl_->fontlist.begin() + i,
 549                                         Pimpl::FontTable(pos, font));
 550         } else if (end) {
 551                 pimpl_->fontlist[i].pos(pos - 1);
 552                 if (!(i + 1 < pimpl_->fontlist.size() &&
 553                       pimpl_->fontlist[i + 1].font() == font))
 554                         pimpl_->fontlist.insert(pimpl_->fontlist.begin() + i + 1,
 555                                         Pimpl::FontTable(pos, font));
 556         } else { // The general case. The block is splitted into 3 blocks
 557                 pimpl_->fontlist.insert(pimpl_->fontlist.begin() + i,
 558                                 Pimpl::FontTable(pos - 1, pimpl_->fontlist[i].font()));
 559                 pimpl_->fontlist.insert(pimpl_->fontlist.begin() + i + 1,
 560                                 Pimpl::FontTable(pos, font));
 561         }
 562 }
 563
 564
 565 void Paragraph::makeSameLayout(Paragraph const & par)
 566 {
 567         layout(par.layout());
 568         // move to pimpl?
 569         params() = par.params();
 570 }
 571
 572
 573 int Paragraph::stripLeadingSpaces()
 574 {
 575         if (isFreeSpacing())
 576                 return 0;
 577
 578         int i = 0;
 579         while (!empty() && (isNewline(0) || isLineSeparator(0))) {
 580                 pimpl_->eraseIntern(0);
 581                 ++i;
 582         }
 583
 584         return i;
 585 }
 586
 587
 588 bool Paragraph::hasSameLayout(Paragraph const & par) const
 589 {
 590         return par.layout() == layout() && params().sameLayout(par.params());
 591 }
 592
 593
 594 Paragraph::depth_type Paragraph::getDepth() const
 595 {
 596         return params().depth();
 597 }
 598
 599
 600 Paragraph::depth_type Paragraph::getMaxDepthAfter() const
 601 {
 602         if (layout()->isEnvironment())
 603                 return params().depth() + 1;
 604         else
 605                 return params().depth();
 606 }
 607
 608
 609 char Paragraph::getAlign() const
 610 {
 611         return params().align();
 612 }
 613
 614
 615 string const & Paragraph::getLabelstring() const
 616 {
 617         return params().labelString();
 618 }
 619
 620
 621 // the next two functions are for the manual labels
 622 string const Paragraph::getLabelWidthString() const
 623 {
 624         if (!params().labelWidthString().empty())
 625                 return params().labelWidthString();
 626         else
 627                 return _("Senseless with this layout!");
 628 }
 629
 630
 631 void Paragraph::setLabelWidthString(string const & s)
 632 {
 633         params().labelWidthString(s);
 634 }
 635
 636
 637 void Paragraph::applyLayout(LyXLayout_ptr const & new_layout)
 638 {
 639         layout(new_layout);
 640         params().labelWidthString(string());
 641         params().align(LYX_ALIGN_LAYOUT);
 642         params().spacing(Spacing(Spacing::Default));
 643 }
 644
 645
 646 pos_type Paragraph::beginOfBody() const
 647 {
 648         return begin_of_body_;
 649 }
 650
 651
 652 void Paragraph::setBeginOfBody()
 653 {
 654         if (layout()->labeltype != LABEL_MANUAL) {
 655                 begin_of_body_ = 0;
 656                 return;
 657         }
 658
 659         // Unroll the first two cycles of the loop
 660         // and remember the previous character to
 661         // remove unnecessary getChar() calls
 662         pos_type i = 0;
 663         pos_type end = size();
 664         if (i < end && !isNewline(i)) {
 665                 ++i;
 666                 char previous_char = 0;
 667                 char temp = 0;
 668                 if (i < end) {
 669                         previous_char = text_[i];
 670                         if (!isNewline(i)) {
 671                                 ++i;
 672                                 while (i < end && previous_char != ' ') {
 673                                         temp = text_[i];
 674                                         if (isNewline(i))
 675                                                 break;
 676                                         ++i;
 677                                         previous_char = temp;
 678                                 }
 679                         }
 680                 }
 681         }
 682
 683         begin_of_body_ = i;
 684 }
 685
 686
 687 // returns -1 if inset not found
 688 int Paragraph::getPositionOfInset(InsetBase const * inset) const
 689 {
 690         // Find the entry.
 691         InsetList::const_iterator it = insetlist.begin();
 692         InsetList::const_iterator end = insetlist.end();
 693         for (; it != end; ++it)
 694                 if (it->inset == inset)
 695                         return it->pos;
 696         return -1;
 697 }
 698
 699
 700 InsetBibitem * Paragraph::bibitem() const
 701 {
 702         if (!insetlist.empty()) {
 703                 InsetBase * inset = insetlist.begin()->inset;
 704                 if (inset->lyxCode() == InsetBase::BIBTEX_CODE)
 705                         return static_cast<InsetBibitem *>(inset);
 706         }
 707         return 0;
 708 }
 709
 710
 711 bool Paragraph::forceDefaultParagraphs() const
 712 {
 713         return inInset() && inInset()->forceDefaultParagraphs(inInset());
 714 }
 715
 716
 717 namespace {
 718
 719 // paragraphs inside floats need different alignment tags to avoid
 720 // unwanted space
 721
 722 bool noTrivlistCentering(InsetBase::Code code)
 723 {
 724         return code == InsetBase::FLOAT_CODE || code == InsetBase::WRAP_CODE;
 725 }
 726
 727
 728 string correction(string const & orig)
 729 {
 730         if (orig == "flushleft")
 731                 return "raggedright";
 732         if (orig == "flushright")
 733                 return "raggedleft";
 734         if (orig == "center")
 735                 return "centering";
 736         return orig;
 737 }
 738
 739
 740 string const corrected_env(string const & suffix, string const & env,
 741         InsetBase::Code code)
 742 {
 743         string output = suffix + "{";
 744         if (noTrivlistCentering(code))
 745                 output += correction(env);
 746         else
 747                 output += env;
 748         return output + "}";
 749 }
 750
 751 } // namespace anon
 752
 753
 754 // This could go to ParagraphParameters if we want to
 755 int Paragraph::startTeXParParams(BufferParams const & bparams,
 756                                  ostream & os, bool moving_arg) const
 757 {
 758         int column = 0;
 759
 760         if (params().noindent()) {
 761                 os << "\\noindent ";
 762                 column += 10;
 763         }
 764
 765         switch (params().align()) {
 766         case LYX_ALIGN_NONE:
 767         case LYX_ALIGN_BLOCK:
 768         case LYX_ALIGN_LAYOUT:
 769         case LYX_ALIGN_SPECIAL:
 770                 break;
 771         case LYX_ALIGN_LEFT:
 772         case LYX_ALIGN_RIGHT:
 773         case LYX_ALIGN_CENTER:
 774                 if (moving_arg) {
 775                         os << "\\protect";
 776                         column += 8;
 777                 }
 778                 break;
 779         }
 780
 781         switch (params().align()) {
 782         case LYX_ALIGN_NONE:
 783         case LYX_ALIGN_BLOCK:
 784         case LYX_ALIGN_LAYOUT:
 785         case LYX_ALIGN_SPECIAL:
 786                 break;
 787         case LYX_ALIGN_LEFT: {
 788                 string output;
 789                 if (getParLanguage(bparams)->babel() != "hebrew")
 790                         output = corrected_env("\\begin", "flushleft", ownerCode());
 791                 else
 792                         output = corrected_env("\\begin", "flushright", ownerCode());
 793                 os << output;
 794                 column += output.size();
 795                 break;
 796         } case LYX_ALIGN_RIGHT: {
 797                 string output;
 798                 if (getParLanguage(bparams)->babel() != "hebrew")
 799                         output = corrected_env("\\begin", "flushright", ownerCode());
 800                 else
 801                         output = corrected_env("\\begin", "flushleft", ownerCode());
 802                 os << output;
 803                 column += output.size();
 804                 break;
 805         } case LYX_ALIGN_CENTER: {
 806                 string output;
 807                 output = corrected_env("\\begin", "center", ownerCode());
 808                 os << output;
 809                 column += output.size();
 810                 break;
 811         }
 812         }
 813
 814         return column;
 815 }
 816
 817
 818 // This could go to ParagraphParameters if we want to
 819 int Paragraph::endTeXParParams(BufferParams const & bparams,
 820                                ostream & os, bool moving_arg) const
 821 {
 822         int column = 0;
 823
 824         switch (params().align()) {
 825         case LYX_ALIGN_NONE:
 826         case LYX_ALIGN_BLOCK:
 827         case LYX_ALIGN_LAYOUT:
 828         case LYX_ALIGN_SPECIAL:
 829                 break;
 830         case LYX_ALIGN_LEFT:
 831         case LYX_ALIGN_RIGHT:
 832         case LYX_ALIGN_CENTER:
 833                 if (moving_arg) {
 834                         os << "\\protect";
 835                         column = 8;
 836                 }
 837                 break;
 838         }
 839
 840         switch (params().align()) {
 841         case LYX_ALIGN_NONE:
 842         case LYX_ALIGN_BLOCK:
 843         case LYX_ALIGN_LAYOUT:
 844         case LYX_ALIGN_SPECIAL:
 845                 break;
 846         case LYX_ALIGN_LEFT: {
 847                 string output;
 848                 if (getParLanguage(bparams)->babel() != "hebrew")
 849                         output = corrected_env("\\par\\end", "flushleft", ownerCode());
 850                 else
 851                         output = corrected_env("\\par\\end", "flushright", ownerCode());
 852                 os << output;
 853                 column += output.size();
 854                 break;
 855         } case LYX_ALIGN_RIGHT: {
 856                 string output;
 857                 if (getParLanguage(bparams)->babel() != "hebrew")
 858                         output = corrected_env("\\par\\end", "flushright", ownerCode());
 859                 else
 860                         output = corrected_env("\\par\\end", "flushleft", ownerCode());
 861                 os << output;
 862                 column += output.size();
 863                 break;
 864         } case LYX_ALIGN_CENTER: {
 865                 string output;
 866                 output = corrected_env("\\par\\end", "center", ownerCode());
 867                 os << output;
 868                 column += output.size();
 869                 break;
 870         }
 871         }
 872
 873         return column;
 874 }
 875
 876
 877 // This one spits out the text of the paragraph
 878 bool Paragraph::simpleTeXOnePar(Buffer const & buf,
 879                                 BufferParams const & bparams,
 880                                 LyXFont const & outerfont,
 881                                 ostream & os, TexRow & texrow,
 882                                 OutputParams const & runparams) const
 883 {
 884         lyxerr[Debug::LATEX] << "SimpleTeXOnePar...     " << this << endl;
 885
 886         bool return_value = false;
 887
 888         LyXLayout_ptr style;
 889
 890         // well we have to check if we are in an inset with unlimited
 891         // length (all in one row) if that is true then we don't allow
 892         // any special options in the paragraph and also we don't allow
 893         // any environment other then "Standard" to be valid!
 894         bool asdefault = forceDefaultParagraphs();
 895
 896         if (asdefault) {
 897                 style = bparams.getLyXTextClass().defaultLayout();
 898         } else {
 899                 style = layout();
 900         }
 901
 902         LyXFont basefont;
 903
 904         // Maybe we have to create a optional argument.
 905         pos_type body_pos = beginOfBody();
 906         unsigned int column = 0;
 907
 908         if (body_pos > 0) {
 909                 // the optional argument is kept in curly brackets in
 910                 // case it contains a ']'
 911                 os << "[{";
 912                 column += 2;
 913                 basefont = getLabelFont(bparams, outerfont);
 914         } else {
 915                 basefont = getLayoutFont(bparams, outerfont);
 916         }
 917
 918         // Which font is currently active?
 919         LyXFont running_font(basefont);
 920         // Do we have an open font change?
 921         bool open_font = false;
 922
 923         Change::Type running_change = Change::UNCHANGED;
 924
 925         texrow.start(id(), 0);
 926
 927         // if the paragraph is empty, the loop will not be entered at all
 928         if (empty()) {
 929                 if (style->isCommand()) {
 930                         os << '{';
 931                         ++column;
 932                 }
 933                 if (!asdefault)
 934                         column += startTeXParParams(bparams, os,
 935                                                     runparams.moving_arg);
 936         }
 937
 938         for (pos_type i = 0; i < size(); ++i) {
 939                 ++column;
 940                 // First char in paragraph or after label?
 941                 if (i == body_pos) {
 942                         if (body_pos > 0) {
 943                                 if (open_font) {
 944                                         column += running_font.latexWriteEndChanges(os, basefont, basefont);
 945                                         open_font = false;
 946                                 }
 947                                 basefont = getLayoutFont(bparams, outerfont);
 948                                 running_font = basefont;
 949                                 os << "}] ";
 950                                 column +=3;
 951                         }
 952                         if (style->isCommand()) {
 953                                 os << '{';
 954                                 ++column;
 955                         }
 956
 957                         if (!asdefault)
 958                                 column += startTeXParParams(bparams, os,
 959                                                             runparams.moving_arg);
 960                 }
 961
 962                 value_type c = getChar(i);
 963
 964                 // Fully instantiated font
 965                 LyXFont font = getFont(bparams, i, outerfont);
 966
 967                 LyXFont const last_font = running_font;
 968
 969                 // Spaces at end of font change are simulated to be
 970                 // outside font change, i.e. we write "\textXX{text} "
 971                 // rather than "\textXX{text }". (Asger)
 972                 if (open_font && c == ' ' && i <= size() - 2) {
 973                         LyXFont const & next_font = getFont(bparams, i + 1, outerfont);
 974                         if (next_font != running_font && next_font != font) {
 975                                 font = next_font;
 976                         }
 977                 }
 978
 979                 // We end font definition before blanks
 980                 if (open_font &&
 981                     (font != running_font ||
 982                      font.language() != running_font.language()))
 983                 {
 984                         column += running_font.latexWriteEndChanges(os,
 985                                                                     basefont,
 986                                                                     (i == body_pos-1) ? basefont : font);
 987                         running_font = basefont;
 988                         open_font = false;
 989                 }
 990
 991                 // Blanks are printed before start of fontswitch
 992                 if (c == ' ') {
 993                         // Do not print the separation of the optional argument
 994                         if (i != body_pos - 1) {
 995                                 pimpl_->simpleTeXBlanks(os, texrow, i,
 996                                                        column, font, *style);
 997                         }
 998                 }
 999
1000                 // Do we need to change font?
1001                 if ((font != running_font ||
1002                      font.language() != running_font.language()) &&
1003                         i != body_pos - 1)
1004                 {
1005                         column += font.latexWriteStartChanges(os, basefont,
1006                                                               last_font);
1007                         running_font = font;
1008                         open_font = true;
1009                 }
1010
1011                 Change::Type change = pimpl_->lookupChange(i);
1012
1013                 column += Changes::latexMarkChange(os, running_change, change);
1014                 running_change = change;
1015
1016                 OutputParams rp = runparams;
1017                 rp.free_spacing = style->free_spacing;
1018                 rp.local_language = font.language()->babel();
1019                 rp.intitle = style->intitle;
1020                 pimpl_->simpleTeXSpecialChars(buf, bparams,
1021                                               os, texrow, rp,
1022                                               font, running_font,
1023                                               basefont, outerfont, open_font,
1024                                               running_change,
1025                                               *style, i, column, c);
1026         }
1027
1028         column += Changes::latexMarkChange(os,
1029                         running_change, Change::UNCHANGED);
1030
1031         // If we have an open font definition, we have to close it
1032         if (open_font) {
1033 #ifdef FIXED_LANGUAGE_END_DETECTION
1034                 if (next_) {
1035                         running_font
1036                                 .latexWriteEndChanges(os, basefont,
1037                                                       next_->getFont(bparams,
1038                                                       0, outerfont));
1039                 } else {
1040                         running_font.latexWriteEndChanges(os, basefont,
1041                                                           basefont);
1042                 }
1043 #else
1044 #ifdef WITH_WARNINGS
1045 //#warning For now we ALWAYS have to close the foreign font settings if they are
1046 //#warning there as we start another \selectlanguage with the next paragraph if
1047 //#warning we are in need of this. This should be fixed sometime (Jug)
1048 #endif
1049                 running_font.latexWriteEndChanges(os, basefont,  basefont);
1050 #endif
1051         }
1052
1053         // Needed if there is an optional argument but no contents.
1054         if (body_pos > 0 && body_pos == size()) {
1055                 os << "]~";
1056                 return_value = false;
1057         }
1058
1059         if (!asdefault) {
1060                 column += endTeXParParams(bparams, os, runparams.moving_arg);
1061         }
1062
1063         lyxerr[Debug::LATEX] << "SimpleTeXOnePar...done " << this << endl;
1064         return return_value;
1065 }
1066
1067
1068 namespace {
1069
1070 // checks, if newcol chars should be put into this line
1071 // writes newline, if necessary.
1072 void sgmlLineBreak(ostream & os, string::size_type & colcount,
1073                           string::size_type newcol)
1074 {
1075         colcount += newcol;
1076         if (colcount > lyxrc.ascii_linelen) {
1077                 os << "\n";
1078                 colcount = newcol; // assume write after this call
1079         }
1080 }
1081
1082 enum PAR_TAG {
1083         PAR_NONE=0,
1084         TT = 1,
1085         SF = 2,
1086         BF = 4,
1087         IT = 8,
1088         SL = 16,
1089         EM = 32
1090 };
1091
1092
1093 string tag_name(PAR_TAG const & pt) {
1094         switch (pt) {
1095         case PAR_NONE: return "!-- --";
1096         case TT: return "tt";
1097         case SF: return "sf";
1098         case BF: return "bf";
1099         case IT: return "it";
1100         case SL: return "sl";
1101         case EM: return "em";
1102         }
1103         return "";
1104 }
1105
1106
1107 inline
1108 void operator|=(PAR_TAG & p1, PAR_TAG const & p2)
1109 {
1110         p1 = static_cast<PAR_TAG>(p1 | p2);
1111 }
1112
1113
1114 inline
1115 void reset(PAR_TAG & p1, PAR_TAG const & p2)
1116 {
1117         p1 = static_cast<PAR_TAG>(p1 & ~p2);
1118 }
1119
1120 } // anon
1121
1122
1123 // Handle internal paragraph parsing -- layout already processed.
1124 void Paragraph::simpleLinuxDocOnePar(Buffer const & buf,
1125                                      ostream & os,
1126                                      LyXFont const & outerfont,
1127                                      OutputParams const & runparams,
1128                                      lyx::depth_type /*depth*/) const
1129 {
1130         LyXLayout_ptr const & style = layout();
1131
1132         string::size_type char_line_count = 5;     // Heuristic choice ;-)
1133
1134         // gets paragraph main font
1135         LyXFont font_old;
1136         bool desc_on;
1137         if (style->labeltype == LABEL_MANUAL) {
1138                 font_old = style->labelfont;
1139                 desc_on = true;
1140         } else {
1141                 font_old = style->font;
1142                 desc_on = false;
1143         }
1144
1145         LyXFont::FONT_FAMILY family_type = LyXFont::ROMAN_FAMILY;
1146         LyXFont::FONT_SERIES series_type = LyXFont::MEDIUM_SERIES;
1147         LyXFont::FONT_SHAPE  shape_type  = LyXFont::UP_SHAPE;
1148         bool is_em = false;
1149
1150         stack<PAR_TAG> tag_state;
1151         // parsing main loop
1152         for (pos_type i = 0; i < size(); ++i) {
1153
1154                 PAR_TAG tag_close = PAR_NONE;
1155                 list < PAR_TAG > tag_open;
1156
1157                 LyXFont const font = getFont(buf.params(), i, outerfont);
1158
1159                 if (font_old.family() != font.family()) {
1160                         switch (family_type) {
1161                         case LyXFont::SANS_FAMILY:
1162                                 tag_close |= SF;
1163                                 break;
1164                         case LyXFont::TYPEWRITER_FAMILY:
1165                                 tag_close |= TT;
1166                                 break;
1167                         default:
1168                                 break;
1169                         }
1170
1171                         family_type = font.family();
1172
1173                         switch (family_type) {
1174                         case LyXFont::SANS_FAMILY:
1175                                 tag_open.push_back(SF);
1176                                 break;
1177                         case LyXFont::TYPEWRITER_FAMILY:
1178                                 tag_open.push_back(TT);
1179                                 break;
1180                         default:
1181                                 break;
1182                         }
1183                 }
1184
1185                 if (font_old.series() != font.series()) {
1186                         switch (series_type) {
1187                         case LyXFont::BOLD_SERIES:
1188                                 tag_close |= BF;
1189                                 break;
1190                         default:
1191                                 break;
1192                         }
1193
1194                         series_type = font.series();
1195
1196                         switch (series_type) {
1197                         case LyXFont::BOLD_SERIES:
1198                                 tag_open.push_back(BF);
1199                                 break;
1200                         default:
1201                                 break;
1202                         }
1203
1204                 }
1205
1206                 if (font_old.shape() != font.shape()) {
1207                         switch (shape_type) {
1208                         case LyXFont::ITALIC_SHAPE:
1209                                 tag_close |= IT;
1210                                 break;
1211                         case LyXFont::SLANTED_SHAPE:
1212                                 tag_close |= SL;
1213                                 break;
1214                         default:
1215                                 break;
1216                         }
1217
1218                         shape_type = font.shape();
1219
1220                         switch (shape_type) {
1221                         case LyXFont::ITALIC_SHAPE:
1222                                 tag_open.push_back(IT);
1223                                 break;
1224                         case LyXFont::SLANTED_SHAPE:
1225                                 tag_open.push_back(SL);
1226                                 break;
1227                         default:
1228                                 break;
1229                         }
1230                 }
1231                 // handle <em> tag
1232                 if (font_old.emph() != font.emph()) {
1233                         if (font.emph() == LyXFont::ON) {
1234                                 tag_open.push_back(EM);
1235                                 is_em = true;
1236                         }
1237                         else if (is_em) {
1238                                 tag_close |= EM;
1239                                 is_em = false;
1240                         }
1241                 }
1242
1243                 list < PAR_TAG > temp;
1244                 while (!tag_state.empty() && tag_close) {
1245                         PAR_TAG k =  tag_state.top();
1246                         tag_state.pop();
1247                         os << "</" << tag_name(k) << '>';
1248                         if (tag_close & k)
1249                                 reset(tag_close,k);
1250                         else
1251                                 temp.push_back(k);
1252                 }
1253
1254                 for(list< PAR_TAG >::const_iterator j = temp.begin();
1255                     j != temp.end(); ++j) {
1256                         tag_state.push(*j);
1257                         os << '<' << tag_name(*j) << '>';
1258                 }
1259
1260                 for(list< PAR_TAG >::const_iterator j = tag_open.begin();
1261                     j != tag_open.end(); ++j) {
1262                         tag_state.push(*j);
1263                         os << '<' << tag_name(*j) << '>';
1264                 }
1265
1266                 value_type c = getChar(i);
1267
1268
1269                 if (c == Paragraph::META_INSET) {
1270                         getInset(i)->linuxdoc(buf, os, runparams);
1271                         font_old = font;
1272                         continue;
1273                 }
1274
1275                 if (style->latexparam() == "CDATA") {
1276                         // "TeX"-Mode on == > SGML-Mode on.
1277                         if (c != '\0')
1278                                 os << c;
1279                         ++char_line_count;
1280                 } else {
1281                         bool ws;
1282                         string str;
1283                         boost::tie(ws, str) = sgml::escapeChar(c);
1284                         if (ws && !isFreeSpacing()) {
1285                                 // in freespacing mode, spaces are
1286                                 // non-breaking characters
1287                                 if (desc_on) { // if char is ' ' then...
1288                                         ++char_line_count;
1289                                         sgmlLineBreak(os, char_line_count, 6);
1290                                         os << "</tag>";
1291                                         desc_on = false;
1292                                 } else  {
1293                                         sgmlLineBreak(os, char_line_count, 1);
1294                                         os << c;
1295                                 }
1296                         } else {
1297                                 os << str;
1298                                 char_line_count += str.length();
1299                         }
1300                 }
1301                 font_old = font;
1302         }
1303
1304         while (!tag_state.empty()) {
1305                 os << "</" << tag_name(tag_state.top()) << '>';
1306                 tag_state.pop();
1307         }
1308
1309         // resets description flag correctly
1310         if (desc_on) {
1311                 // <tag> not closed...
1312                 sgmlLineBreak(os, char_line_count, 6);
1313                 os << "</tag>";
1314         }
1315 }
1316
1317
1318 bool Paragraph::emptyTag() const
1319 {
1320         for (pos_type i = 0; i < size(); ++i) {
1321                 if (isInset(i)) {
1322                         InsetBase const * inset = getInset(i);
1323                         InsetBase::Code lyx_code = inset->lyxCode();
1324                         if (lyx_code != InsetBase::TOC_CODE &&
1325                             lyx_code != InsetBase::INCLUDE_CODE &&
1326                             lyx_code != InsetBase::GRAPHICS_CODE &&
1327                             lyx_code != InsetBase::ERT_CODE &&
1328                             lyx_code != InsetBase::FLOAT_CODE &&
1329                             lyx_code != InsetBase::TABULAR_CODE) {
1330                                 return false;
1331                         }
1332                 } else {
1333                         value_type c = getChar(i);
1334                         if (c != ' ' && c != '\t')
1335                                 return false;
1336                 }
1337         }
1338         return true;
1339 }
1340
1341
1342 string Paragraph::getID(Buffer const & buf, OutputParams const & runparams) const
1343 {
1344         for (pos_type i = 0; i < size(); ++i) {
1345                 if (isInset(i)) {
1346                         InsetBase const * inset = getInset(i);
1347                         InsetBase::Code lyx_code = inset->lyxCode();
1348                         if (lyx_code == InsetBase::LABEL_CODE) {
1349                                 string const id = static_cast<InsetCommand const *>(inset)->getContents();
1350                                 return "id=\"" + sgml::cleanID(buf, runparams, id) + "\"";
1351                         }
1352                 }
1353
1354         }
1355         return string();
1356 }
1357
1358
1359 pos_type Paragraph::getFirstWord(Buffer const & buf, ostream & os, OutputParams const & runparams) const
1360 {
1361         pos_type i;
1362         for (i = 0; i < size(); ++i) {
1363                 if (isInset(i)) {
1364                         InsetBase const * inset = getInset(i);
1365                         inset->docbook(buf, os, runparams);
1366                 } else {
1367                         value_type c = getChar(i);
1368                         if (c == ' ')
1369                                 break;
1370                         bool ws;
1371                         string str;
1372                         boost::tie(ws, str) = sgml::escapeChar(c);
1373
1374                         os << str;
1375                 }
1376         }
1377         return i;
1378 }
1379
1380
1381 bool Paragraph::onlyText(Buffer const & buf, LyXFont const & outerfont, pos_type initial) const
1382 {
1383         LyXFont font_old;
1384
1385         for (pos_type i = initial; i < size(); ++i) {
1386                 LyXFont font = getFont(buf.params(), i, outerfont);
1387                 if (isInset(i))
1388                         return false;
1389                 if (i != initial && font != font_old)
1390                         return false;
1391                 font_old = font;
1392         }
1393
1394         return true;
1395 }
1396
1397
1398 void Paragraph::simpleDocBookOnePar(Buffer const & buf,
1399                                     ostream & os,
1400                                     OutputParams const & runparams,
1401                                     LyXFont const & outerfont,
1402                                     pos_type initial) const
1403 {
1404         bool emph_flag = false;
1405
1406         LyXLayout_ptr const & style = layout();
1407         LyXFont font_old =
1408                 style->labeltype == LABEL_MANUAL ? style->labelfont : style->font;
1409
1410         if (style->pass_thru && !onlyText(buf, outerfont, initial))
1411                 os << "]]>";
1412
1413         // parsing main loop
1414         for (pos_type i = initial; i < size(); ++i) {
1415                 LyXFont font = getFont(buf.params(), i, outerfont);
1416
1417                 // handle <emphasis> tag
1418                 if (font_old.emph() != font.emph()) {
1419                         if (font.emph() == LyXFont::ON) {
1420                                 os << "<emphasis>";
1421                                 emph_flag = true;
1422                         } else if (i != initial) {
1423                                 os << "</emphasis>";
1424                                 emph_flag = false;
1425                         }
1426                 }
1427
1428                 if (isInset(i)) {
1429                         InsetBase const * inset = getInset(i);
1430                         inset->docbook(buf, os, runparams);
1431                 } else {
1432                         value_type c = getChar(i);
1433                         bool ws;
1434                         string str;
1435                         boost::tie(ws, str) = sgml::escapeChar(c);
1436
1437                         if (style->pass_thru)
1438                                 os << c;
1439                         else
1440                                 os << str;
1441                 }
1442                 font_old = font;
1443         }
1444
1445         if (emph_flag) {
1446                 os << "</emphasis>";
1447         }
1448
1449         if (style->free_spacing)
1450                 os << '\n';
1451         if (style->pass_thru && !onlyText(buf, outerfont, initial))
1452                 os << "<![CDATA[";
1453 }
1454
1455
1456 namespace {
1457
1458 /// return true if the char is a meta-character for an inset
1459 inline
1460 bool IsInsetChar(char c)
1461 {
1462         return (c == Paragraph::META_INSET);
1463 }
1464
1465 } // namespace anon
1466
1467
1468
1469 bool Paragraph::isHfill(pos_type pos) const
1470 {
1471         return isInset(pos)
1472                 && getInset(pos)->lyxCode() == InsetBase::HFILL_CODE;
1473 }
1474
1475
1476 bool Paragraph::isNewline(pos_type pos) const
1477 {
1478         return isInset(pos)
1479                 && getInset(pos)->lyxCode() == InsetBase::NEWLINE_CODE;
1480 }
1481
1482
1483 bool Paragraph::isSeparator(pos_type pos) const
1484 {
1485         return IsSeparatorChar(getChar(pos));
1486 }
1487
1488
1489 bool Paragraph::isLineSeparator(pos_type pos) const
1490 {
1491         value_type const c = getChar(pos);
1492         return IsLineSeparatorChar(c)
1493                 || (IsInsetChar(c) && getInset(pos) &&
1494                 getInset(pos)->isLineSeparator());
1495 }
1496
1497
1498 /// Used by the spellchecker
1499 bool Paragraph::isLetter(pos_type pos) const
1500 {
1501         if (isInset(pos))
1502                 return getInset(pos)->isLetter();
1503         else {
1504                 value_type const c = getChar(pos);
1505                 return IsLetterChar(c) || IsDigit(c);
1506         }
1507 }
1508
1509
1510 Language const *
1511 Paragraph::getParLanguage(BufferParams const & bparams) const
1512 {
1513         if (!empty())
1514                 return getFirstFontSettings().language();
1515 #ifdef WITH_WARNINGS
1516 #warning FIXME we should check the prev par as well (Lgb)
1517 #endif
1518         return bparams.language;
1519 }
1520
1521
1522 bool Paragraph::isRightToLeftPar(BufferParams const & bparams) const
1523 {
1524         return lyxrc.rtl_support
1525                 && getParLanguage(bparams)->RightToLeft()
1526                 && ownerCode() != InsetBase::ERT_CODE;
1527 }
1528
1529
1530 void Paragraph::changeLanguage(BufferParams const & bparams,
1531                                Language const * from, Language const * to)
1532 {
1533         for (pos_type i = 0; i < size(); ++i) {
1534                 LyXFont font = getFontSettings(bparams, i);
1535                 if (font.language() == from) {
1536                         font.setLanguage(to);
1537                         setFont(i, font);
1538                 }
1539         }
1540 }
1541
1542
1543 bool Paragraph::isMultiLingual(BufferParams const & bparams) const
1544 {
1545         Language const * doc_language = bparams.language;
1546         Pimpl::FontList::const_iterator cit = pimpl_->fontlist.begin();
1547         Pimpl::FontList::const_iterator end = pimpl_->fontlist.end();
1548
1549         for (; cit != end; ++cit)
1550                 if (cit->font().language() != ignore_language &&
1551                     cit->font().language() != latex_language &&
1552                     cit->font().language() != doc_language)
1553                         return true;
1554         return false;
1555 }
1556
1557
1558 // Convert the paragraph to a string.
1559 // Used for building the table of contents
1560 string const Paragraph::asString(Buffer const & buffer, bool label) const
1561 {
1562         OutputParams runparams;
1563         return asString(buffer, runparams, label);
1564 }
1565
1566
1567 string const Paragraph::asString(Buffer const & buffer,
1568                                  OutputParams const & runparams,
1569                                  bool label) const
1570 {
1571 #if 0
1572         string s;
1573         if (label && !params().labelString().empty())
1574                 s += params().labelString() + ' ';
1575
1576         for (pos_type i = 0; i < size(); ++i) {
1577                 value_type c = getChar(i);
1578                 if (IsPrintable(c))
1579                         s += c;
1580                 else if (c == META_INSET &&
1581                          getInset(i)->lyxCode() == InsetBase::MATH_CODE) {
1582                         ostringstream os;
1583                         getInset(i)->plaintext(buffer, os, runparams);
1584                         s += subst(STRCONV(os.str()),'\n',' ');
1585                 }
1586         }
1587
1588         return s;
1589 #else
1590         // This should really be done by the caller and not here.
1591         string ret = asString(buffer, runparams, 0, size(), label);
1592         return subst(ret, '\n', ' ');
1593 #endif
1594 }
1595
1596
1597 string const Paragraph::asString(Buffer const & buffer,
1598                                  pos_type beg, pos_type end, bool label) const
1599 {
1600
1601         OutputParams const runparams;
1602         return asString(buffer, runparams, beg, end, label);
1603 }
1604
1605
1606 string const Paragraph::asString(Buffer const & buffer,
1607                                  OutputParams const & runparams,
1608                                  pos_type beg, pos_type end, bool label) const
1609 {
1610         ostringstream os;
1611
1612         if (beg == 0 && label && !params().labelString().empty())
1613                 os << params().labelString() << ' ';
1614
1615         for (pos_type i = beg; i < end; ++i) {
1616                 value_type const c = getUChar(buffer.params(), i);
1617                 if (IsPrintable(c))
1618                         os << c;
1619                 else if (c == META_INSET)
1620                         getInset(i)->plaintext(buffer, os, runparams);
1621         }
1622
1623         return os.str();
1624 }
1625
1626
1627 void Paragraph::setInsetOwner(UpdatableInset * inset)
1628 {
1629         pimpl_->inset_owner = inset;
1630 }
1631
1632
1633 void Paragraph::setContentsFromPar(Paragraph const & par)
1634 {
1635         pimpl_->setContentsFromPar(par);
1636 }
1637
1638
1639 void Paragraph::trackChanges(Change::Type type)
1640 {
1641         pimpl_->trackChanges(type);
1642 }
1643
1644
1645 void Paragraph::untrackChanges()
1646 {
1647         pimpl_->untrackChanges();
1648 }
1649
1650
1651 void Paragraph::cleanChanges()
1652 {
1653         pimpl_->cleanChanges();
1654 }
1655
1656
1657 Change::Type Paragraph::lookupChange(lyx::pos_type pos) const
1658 {
1659         BOOST_ASSERT(empty() || pos < size());
1660         return pimpl_->lookupChange(pos);
1661 }
1662
1663
1664 Change const Paragraph::lookupChangeFull(lyx::pos_type pos) const
1665 {
1666         BOOST_ASSERT(empty() || pos < size());
1667         return pimpl_->lookupChangeFull(pos);
1668 }
1669
1670
1671 bool Paragraph::isChanged(pos_type start, pos_type end) const
1672 {
1673         return pimpl_->isChanged(start, end);
1674 }
1675
1676
1677 bool Paragraph::isChangeEdited(pos_type start, pos_type end) const
1678 {
1679         return pimpl_->isChangeEdited(start, end);
1680 }
1681
1682
1683 void Paragraph::setChange(lyx::pos_type pos, Change::Type type)
1684 {
1685         pimpl_->setChange(pos, type);
1686 }
1687
1688
1689 void Paragraph::markErased()
1690 {
1691         pimpl_->markErased();
1692 }
1693
1694
1695 void Paragraph::acceptChange(pos_type start, pos_type end)
1696 {
1697         return pimpl_->acceptChange(start, end);
1698 }
1699
1700
1701 void Paragraph::rejectChange(pos_type start, pos_type end)
1702 {
1703         return pimpl_->rejectChange(start, end);
1704 }
1705
1706
1707 int Paragraph::id() const
1708 {
1709         return pimpl_->id_;
1710 }
1711
1712
1713 LyXLayout_ptr const & Paragraph::layout() const
1714 {
1715         return layout_;
1716 }
1717
1718
1719 void Paragraph::layout(LyXLayout_ptr const & new_layout)
1720 {
1721         layout_ = new_layout;
1722 }
1723
1724
1725 UpdatableInset * Paragraph::inInset() const
1726 {
1727         return pimpl_->inset_owner;
1728 }
1729
1730
1731 InsetBase::Code Paragraph::ownerCode() const
1732 {
1733         return pimpl_->inset_owner
1734                 ? pimpl_->inset_owner->lyxCode() : InsetBase::NO_CODE;
1735 }
1736
1737
1738 void Paragraph::clearContents()
1739 {
1740         text_.clear();
1741 }
1742
1743
1744 void Paragraph::setChar(pos_type pos, value_type c)
1745 {
1746         text_[pos] = c;
1747 }
1748
1749
1750 ParagraphParameters & Paragraph::params()
1751 {
1752         return pimpl_->params;
1753 }
1754
1755
1756 ParagraphParameters const & Paragraph::params() const
1757 {
1758         return pimpl_->params;
1759 }
1760
1761
1762 bool Paragraph::isFreeSpacing() const
1763 {
1764         if (layout()->free_spacing)
1765                 return true;
1766
1767         // for now we just need this, later should we need this in some
1768         // other way we can always add a function to InsetBase too.
1769         return ownerCode() == InsetBase::ERT_CODE;
1770 }
1771
1772
1773 bool Paragraph::allowEmpty() const
1774 {
1775         if (layout()->keepempty)
1776                 return true;
1777         return ownerCode() == InsetBase::ERT_CODE;
1778 }
1779
1780
1781 Row & Paragraph::getRow(pos_type pos)
1782 {
1783         RowList::iterator rit = rows_.end();
1784         RowList::iterator const begin = rows_.begin();
1785
1786         for (--rit; rit != begin && rit->pos() > pos; --rit)
1787                 ;
1788
1789         return *rit;
1790 }
1791
1792
1793 Row const & Paragraph::getRow(pos_type pos) const
1794 {
1795         RowList::const_iterator rit = rows_.end();
1796         RowList::const_iterator const begin = rows_.begin();
1797
1798         for (--rit; rit != begin && rit->pos() > pos; --rit)
1799                 ;
1800
1801         return *rit;
1802 }
1803
1804
1805 size_t Paragraph::pos2row(pos_type pos) const
1806 {
1807         RowList::const_iterator rit = rows_.end();
1808         RowList::const_iterator const begin = rows_.begin();
1809
1810         for (--rit; rit != begin && rit->pos() > pos; --rit)
1811                 ;
1812
1813         return rit - begin;
1814 }
1815
1816
1817 unsigned char Paragraph::transformChar(unsigned char c, pos_type pos) const
1818 {
1819         if (!Encodings::is_arabic(c))
1820                 if (lyxrc.font_norm_type == LyXRC::ISO_8859_6_8 && IsDigit(c))
1821                         return c + (0xb0 - '0');
1822                 else
1823                         return c;
1824
1825         unsigned char const prev_char = pos > 0 ? getChar(pos - 1) : ' ';
1826         unsigned char next_char = ' ';
1827
1828         for (pos_type i = pos + 1, end = size(); i < end; ++i) {
1829                 unsigned char const par_char = getChar(i);
1830                 if (!Encodings::IsComposeChar_arabic(par_char)) {
1831                         next_char = par_char;
1832                         break;
1833                 }
1834         }
1835
1836         if (Encodings::is_arabic(next_char)) {
1837                 if (Encodings::is_arabic(prev_char) &&
1838                         !Encodings::is_arabic_special(prev_char))
1839                         return Encodings::TransformChar(c, Encodings::FORM_MEDIAL);
1840                 else
1841                         return Encodings::TransformChar(c, Encodings::FORM_INITIAL);
1842         } else {
1843                 if (Encodings::is_arabic(prev_char) &&
1844                         !Encodings::is_arabic_special(prev_char))
1845                         return Encodings::TransformChar(c, Encodings::FORM_FINAL);
1846                 else
1847                         return Encodings::TransformChar(c, Encodings::FORM_ISOLATED);
1848         }
1849 }
1850
1851
1852 void Paragraph::dump() const
1853 {
1854         lyxerr << "Paragraph::dump: rows.size(): " << rows_.size() << endl;
1855         for (size_t i = 0; i != rows_.size(); ++i) {
1856                 lyxerr << "  row " << i << ":   ";
1857                 rows_[i].dump();
1858         }
1859 }
1860
1861 //void Paragraph::metrics(MetricsInfo & mi, Dimension & dim, LyXText & text)
1862 //{
1863 //}
1864 //
1865 //
1866 //void draw(PainterInfo & pi, int x, int y, LyXText & text) const
1867 //{
1868 //}