src/text.C

   1 /**
   2  * \file src/text.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 John Levon
  10  * \author André Pönitz
  11  * \author Dekel Tsur
  12  * \author Jürgen Vigna
  13  *
  14  * Full author contact details are available in file CREDITS.
  15  */
  16
  17 #include <config.h>
  18
  19 #include "lyxtext.h"
  20
  21 #include "author.h"
  22 #include "buffer.h"
  23 #include "bufferparams.h"
  24 #include "BufferView.h"
  25 #include "cursor.h"
  26 #include "CutAndPaste.h"
  27 #include "debug.h"
  28 #include "dispatchresult.h"
  29 #include "encoding.h"
  30 #include "errorlist.h"
  31 #include "funcrequest.h"
  32 #include "factory.h"
  33 #include "FontIterator.h"
  34 #include "gettext.h"
  35 #include "language.h"
  36 #include "LColor.h"
  37 #include "lyxlength.h"
  38 #include "lyxlex.h"
  39 #include "lyxrc.h"
  40 #include "lyxrow.h"
  41 #include "lyxrow_funcs.h"
  42 #include "metricsinfo.h"
  43 #include "paragraph.h"
  44 #include "paragraph_funcs.h"
  45 #include "ParagraphParameters.h"
  46 #include "rowpainter.h"
  47 #include "undo.h"
  48 #include "vspace.h"
  49 #include "WordLangTuple.h"
  50
  51 #include "frontends/font_metrics.h"
  52 #include "frontends/LyXView.h"
  53
  54 #include "insets/insettext.h"
  55 #include "insets/insetbibitem.h"
  56 #include "insets/insethfill.h"
  57 #include "insets/insetlatexaccent.h"
  58 #include "insets/insetline.h"
  59 #include "insets/insetnewline.h"
  60 #include "insets/insetpagebreak.h"
  61 #include "insets/insetoptarg.h"
  62 #include "insets/insetspace.h"
  63 #include "insets/insetspecialchar.h"
  64 #include "insets/insettabular.h"
  65
  66 #include "support/lstrings.h"
  67 #include "support/textutils.h"
  68 #include "support/tostr.h"
  69 #include "support/std_sstream.h"
  70
  71 using lyx::par_type;
  72 using lyx::pos_type;
  73 using lyx::word_location;
  74
  75 using lyx::support::bformat;
  76 using lyx::support::contains;
  77 using lyx::support::lowercase;
  78 using lyx::support::split;
  79 using lyx::support::uppercase;
  80
  81 using lyx::cap::cutSelection;
  82
  83 using std::auto_ptr;
  84 using std::advance;
  85 using std::distance;
  86 using std::max;
  87 using std::min;
  88 using std::endl;
  89 using std::string;
  90
  91
  92 /// some space for drawing the 'nested' markers (in pixel)
  93 extern int const NEST_MARGIN = 20;
  94 /// margin for changebar
  95 extern int const CHANGEBAR_MARGIN = 10;
  96 /// right margin
  97 extern int const RIGHT_MARGIN = 10;
  98
  99
 100 namespace {
 101
 102 int numberOfSeparators(Paragraph const & par, Row const & row)
 103 {
 104         pos_type const first = max(row.pos(), par.beginOfBody());
 105         pos_type const last = row.endpos() - 1;
 106         int n = 0;
 107         for (pos_type p = first; p < last; ++p) {
 108                 if (par.isSeparator(p))
 109                         ++n;
 110         }
 111         return n;
 112 }
 113
 114
 115 unsigned int maxParagraphWidth(ParagraphList const & plist)
 116 {
 117         unsigned int width = 0;
 118         ParagraphList::const_iterator pit = plist.begin();
 119         ParagraphList::const_iterator end = plist.end();
 120                 for (; pit != end; ++pit)
 121                         width = std::max(width, pit->width);
 122         return width;
 123 }
 124
 125
 126 int numberOfLabelHfills(Paragraph const & par, Row const & row)
 127 {
 128         pos_type last = row.endpos() - 1;
 129         pos_type first = row.pos();
 130
 131         // hfill *DO* count at the beginning of paragraphs!
 132         if (first) {
 133                 while (first < last && par.isHfill(first))
 134                         ++first;
 135         }
 136
 137         last = min(last, par.beginOfBody());
 138         int n = 0;
 139         for (pos_type p = first; p < last; ++p) {
 140                 if (par.isHfill(p))
 141                         ++n;
 142         }
 143         return n;
 144 }
 145
 146
 147 int numberOfHfills(Paragraph const & par, Row const & row)
 148 {
 149         pos_type const last = row.endpos() - 1;
 150         pos_type first = row.pos();
 151
 152         // hfill *DO* count at the beginning of paragraphs!
 153         if (first) {
 154                 while (first < last && par.isHfill(first))
 155                         ++first;
 156         }
 157
 158         first = max(first, par.beginOfBody());
 159
 160         int n = 0;
 161         for (pos_type p = first; p < last; ++p) {
 162                 if (par.isHfill(p))
 163                         ++n;
 164         }
 165         return n;
 166 }
 167
 168
 169 int readParToken(Buffer const & buf, Paragraph & par, LyXLex & lex,
 170         string const & token)
 171 {
 172         static LyXFont font;
 173         static Change change;
 174
 175         BufferParams const & bp = buf.params();
 176
 177         if (token[0] != '\\') {
 178                 string::const_iterator cit = token.begin();
 179                 for (; cit != token.end(); ++cit) {
 180                         par.insertChar(par.size(), (*cit), font, change);
 181                 }
 182         } else if (token == "\\begin_layout") {
 183                 lex.eatLine();
 184                 string layoutname = lex.getString();
 185
 186                 font = LyXFont(LyXFont::ALL_INHERIT, bp.language);
 187                 change = Change();
 188
 189                 LyXTextClass const & tclass = bp.getLyXTextClass();
 190
 191                 if (layoutname.empty()) {
 192                         layoutname = tclass.defaultLayoutName();
 193                 }
 194
 195                 bool hasLayout = tclass.hasLayout(layoutname);
 196
 197                 if (!hasLayout) {
 198                         lyxerr << "Layout '" << layoutname << "' does not"
 199                                << " exist in textclass '" << tclass.name()
 200                                << "'." << endl;
 201                         lyxerr << "Trying to use default layout instead."
 202                                << endl;
 203                         layoutname = tclass.defaultLayoutName();
 204                 }
 205
 206                 par.layout(bp.getLyXTextClass()[layoutname]);
 207
 208                 // Test whether the layout is obsolete.
 209                 LyXLayout_ptr const & layout = par.layout();
 210                 if (!layout->obsoleted_by().empty())
 211                         par.layout(bp.getLyXTextClass()[layout->obsoleted_by()]);
 212
 213                 par.params().read(lex);
 214
 215         } else if (token == "\\end_layout") {
 216                 lyxerr << "Solitary \\end_layout in line " << lex.getLineNo() << "\n"
 217                        << "Missing \\begin_layout?.\n";
 218         } else if (token == "\\end_inset") {
 219                 lyxerr << "Solitary \\end_inset in line " << lex.getLineNo() << "\n"
 220                        << "Missing \\begin_inset?.\n";
 221         } else if (token == "\\begin_inset") {
 222                 InsetBase * inset = readInset(lex, buf);
 223                 if (inset)
 224                         par.insertInset(par.size(), inset, font, change);
 225                 else {
 226                         lex.eatLine();
 227                         string line = lex.getString();
 228                         buf.error(ErrorItem(_("Unknown Inset"), line,
 229                                             par.id(), 0, par.size()));
 230                         return 1;
 231                 }
 232         } else if (token == "\\family") {
 233                 lex.next();
 234                 font.setLyXFamily(lex.getString());
 235         } else if (token == "\\series") {
 236                 lex.next();
 237                 font.setLyXSeries(lex.getString());
 238         } else if (token == "\\shape") {
 239                 lex.next();
 240                 font.setLyXShape(lex.getString());
 241         } else if (token == "\\size") {
 242                 lex.next();
 243                 font.setLyXSize(lex.getString());
 244         } else if (token == "\\lang") {
 245                 lex.next();
 246                 string const tok = lex.getString();
 247                 Language const * lang = languages.getLanguage(tok);
 248                 if (lang) {
 249                         font.setLanguage(lang);
 250                 } else {
 251                         font.setLanguage(bp.language);
 252                         lex.printError("Unknown language `$$Token'");
 253                 }
 254         } else if (token == "\\numeric") {
 255                 lex.next();
 256                 font.setNumber(font.setLyXMisc(lex.getString()));
 257         } else if (token == "\\emph") {
 258                 lex.next();
 259                 font.setEmph(font.setLyXMisc(lex.getString()));
 260         } else if (token == "\\bar") {
 261                 lex.next();
 262                 string const tok = lex.getString();
 263
 264                 if (tok == "under")
 265                         font.setUnderbar(LyXFont::ON);
 266                 else if (tok == "no")
 267                         font.setUnderbar(LyXFont::OFF);
 268                 else if (tok == "default")
 269                         font.setUnderbar(LyXFont::INHERIT);
 270                 else
 271                         lex.printError("Unknown bar font flag "
 272                                        "`$$Token'");
 273         } else if (token == "\\noun") {
 274                 lex.next();
 275                 font.setNoun(font.setLyXMisc(lex.getString()));
 276         } else if (token == "\\color") {
 277                 lex.next();
 278                 font.setLyXColor(lex.getString());
 279         } else if (token == "\\InsetSpace" || token == "\\SpecialChar") {
 280
 281                 // Insets don't make sense in a free-spacing context! ---Kayvan
 282                 if (par.isFreeSpacing()) {
 283                         if (token == "\\InsetSpace")
 284                                 par.insertChar(par.size(), ' ', font, change);
 285                         else if (lex.isOK()) {
 286                                 lex.next();
 287                                 string const next_token = lex.getString();
 288                                 if (next_token == "\\-")
 289                                         par.insertChar(par.size(), '-', font, change);
 290                                 else {
 291                                         lex.printError("Token `$$Token' "
 292                                                        "is in free space "
 293                                                        "paragraph layout!");
 294                                 }
 295                         }
 296                 } else {
 297                         auto_ptr<InsetBase> inset;
 298                         if (token == "\\SpecialChar" )
 299                                 inset.reset(new InsetSpecialChar);
 300                         else
 301                                 inset.reset(new InsetSpace);
 302                         inset->read(buf, lex);
 303                         par.insertInset(par.size(), inset.release(),
 304                                         font, change);
 305                 }
 306         } else if (token == "\\i") {
 307                 auto_ptr<InsetBase> inset(new InsetLatexAccent);
 308                 inset->read(buf, lex);
 309                 par.insertInset(par.size(), inset.release(), font, change);
 310         } else if (token == "\\backslash") {
 311                 par.insertChar(par.size(), '\\', font, change);
 312         } else if (token == "\\newline") {
 313                 auto_ptr<InsetBase> inset(new InsetNewline);
 314                 inset->read(buf, lex);
 315                 par.insertInset(par.size(), inset.release(), font, change);
 316         } else if (token == "\\LyXTable") {
 317                 auto_ptr<InsetBase> inset(new InsetTabular(buf));
 318                 inset->read(buf, lex);
 319                 par.insertInset(par.size(), inset.release(), font, change);
 320         } else if (token == "\\bibitem") {
 321                 InsetCommandParams p("bibitem", "dummy");
 322                 auto_ptr<InsetBibitem> inset(new InsetBibitem(p));
 323                 inset->read(buf, lex);
 324                 par.insertInset(par.size(), inset.release(), font, change);
 325         } else if (token == "\\hfill") {
 326                 par.insertInset(par.size(), new InsetHFill, font, change);
 327         } else if (token == "\\lyxline") {
 328                 par.insertInset(par.size(), new InsetLine, font, change);
 329         } else if (token == "\\newpage") {
 330                 par.insertInset(par.size(), new InsetPagebreak, font, change);
 331         } else if (token == "\\change_unchanged") {
 332                 // Hack ! Needed for empty paragraphs :/
 333                 // FIXME: is it still ??
 334                 if (!par.size())
 335                         par.cleanChanges();
 336                 change = Change(Change::UNCHANGED);
 337         } else if (token == "\\change_inserted") {
 338                 lex.nextToken();
 339                 std::istringstream is(lex.getString());
 340                 int aid;
 341                 lyx::time_type ct;
 342                 is >> aid >> ct;
 343                 change = Change(Change::INSERTED, bp.author_map[aid], ct);
 344         } else if (token == "\\change_deleted") {
 345                 lex.nextToken();
 346                 std::istringstream is(lex.getString());
 347                 int aid;
 348                 lyx::time_type ct;
 349                 is >> aid >> ct;
 350                 change = Change(Change::DELETED, bp.author_map[aid], ct);
 351         } else {
 352                 lex.eatLine();
 353                 buf.error(ErrorItem(_("Unknown token"),
 354                         bformat(_("Unknown token: %1$s %2$s\n"), token, lex.getString()),
 355                         par.id(), 0, par.size()));
 356                 return 1;
 357         }
 358         return 0;
 359 }
 360
 361
 362 int readParagraph(Buffer const & buf, Paragraph & par, LyXLex & lex)
 363 {
 364         int unknown = 0;
 365
 366         lex.nextToken();
 367         string token = lex.getString();
 368
 369         while (lex.isOK()) {
 370
 371                 unknown += readParToken(buf, par, lex, token);
 372
 373                 lex.nextToken();
 374                 token = lex.getString();
 375
 376                 if (token.empty())
 377                         continue;
 378
 379                 if (token == "\\end_layout") {
 380                         //Ok, paragraph finished
 381                         break;
 382                 }
 383
 384                 lyxerr[Debug::PARSER] << "Handling paragraph token: `"
 385                                       << token << '\'' << endl;
 386                 if (token == "\\begin_layout" || token == "\\end_document"
 387                     || token == "\\end_inset" || token == "\\begin_deeper"
 388                     || token == "\\end_deeper") {
 389                         lex.pushToken(token);
 390                         lyxerr << "Paragraph ended in line "
 391                                << lex.getLineNo() << "\n"
 392                                << "Missing \\end_layout.\n";
 393                         break;
 394                 }
 395         }
 396
 397         return unknown;
 398 }
 399
 400
 401 } // namespace anon
 402
 403
 404 BufferView * LyXText::bv()
 405 {
 406         BOOST_ASSERT(bv_owner != 0);
 407         return bv_owner;
 408 }
 409
 410
 411 BufferView * LyXText::bv() const
 412 {
 413         BOOST_ASSERT(bv_owner != 0);
 414         return bv_owner;
 415 }
 416
 417
 418 double LyXText::spacing(Paragraph const & par) const
 419 {
 420         if (par.params().spacing().isDefault())
 421                 return bv()->buffer()->params().spacing().getValue();
 422         return par.params().spacing().getValue();
 423 }
 424
 425
 426 void LyXText::updateParPositions()
 427 {
 428         par_type pit = 0;
 429         par_type end = pars_.size();
 430         for (height_ = 0; pit != end; ++pit) {
 431                 pars_[pit].y = height_;
 432                 height_ += pars_[pit].height;
 433         }
 434 }
 435
 436
 437 int LyXText::width() const
 438 {
 439         return width_;
 440 }
 441
 442
 443 int LyXText::height() const
 444 {
 445         return height_;
 446 }
 447
 448
 449 int LyXText::singleWidth(par_type par, pos_type pos) const
 450 {
 451         if (pos >= pars_[par].size())
 452                 return 0;
 453
 454         char const c = pars_[par].getChar(pos);
 455         return singleWidth(par, pos, c, getFont(par, pos));
 456 }
 457
 458
 459 int LyXText::singleWidth(par_type pit,
 460                          pos_type pos, char c, LyXFont const & font) const
 461 {
 462         if (pos >= pars_[pit].size()) {
 463                 lyxerr << "in singleWidth(), pos: " << pos << endl;
 464                 BOOST_ASSERT(false);
 465                 return 0;
 466         }
 467
 468         // The most common case is handled first (Asger)
 469         if (IsPrintable(c)) {
 470                 if (!font.language()->RightToLeft()) {
 471                         if ((lyxrc.font_norm_type == LyXRC::ISO_8859_6_8 ||
 472                              lyxrc.font_norm_type == LyXRC::ISO_10646_1)
 473                             && font.language()->lang() == "arabic") {
 474                                 if (Encodings::IsComposeChar_arabic(c))
 475                                         return 0;
 476                                 else
 477                                         c = pars_[pit].transformChar(c, pos);
 478                         } else if (font.language()->lang() == "hebrew" &&
 479                                  Encodings::IsComposeChar_hebrew(c))
 480                                 return 0;
 481                 }
 482                 return font_metrics::width(c, font);
 483         }
 484
 485         if (c == Paragraph::META_INSET)
 486                 return pars_[pit].getInset(pos)->width();
 487
 488         if (IsSeparatorChar(c))
 489                 c = ' ';
 490         return font_metrics::width(c, font);
 491 }
 492
 493
 494 int LyXText::leftMargin(par_type pit) const
 495 {
 496         return leftMargin(pit, pars_[pit].size());
 497 }
 498
 499
 500 int LyXText::leftMargin(par_type pit, pos_type pos) const
 501 {
 502         LyXTextClass const & tclass =
 503                 bv()->buffer()->params().getLyXTextClass();
 504         LyXLayout_ptr const & layout = pars_[pit].layout();
 505
 506         string parindent = layout->parindent;
 507
 508         int x = NEST_MARGIN + CHANGEBAR_MARGIN;
 509
 510         x += font_metrics::signedWidth(tclass.leftmargin(), tclass.defaultfont());
 511
 512         // This is the way LyX handles LaTeX-Environments.
 513         // I have had this idea very late, so it seems to be a
 514         // later added hack and this is true
 515         if (pars_[pit].getDepth() == 0) {
 516                 if (pars_[pit].layout() == tclass.defaultLayout()) {
 517                         // find the previous same level paragraph
 518                         if (pit != 0) {
 519                                 par_type newpit =
 520                                         depthHook(pit, paragraphs(), pars_[pit].getDepth());
 521                                 if (newpit == pit && pars_[newpit].layout()->nextnoindent)
 522                                         parindent.erase();
 523                         }
 524                 }
 525         } else {
 526                 // find the next level paragraph
 527                 par_type newpar = outerHook(pit, pars_);
 528
 529                 // Make a corresponding row. Need to call leftMargin()
 530                 // to check whether it is a sufficent paragraph.
 531                 if (newpar != par_type(pars_.size())
 532                     && pars_[newpar].layout()->isEnvironment()) {
 533                         x = leftMargin(newpar);
 534                 }
 535
 536                 if (newpar != par_type(paragraphs().size())
 537                     && pars_[pit].layout() == tclass.defaultLayout()) {
 538                         if (pars_[newpar].params().noindent())
 539                                 parindent.erase();
 540                         else
 541                                 parindent = pars_[newpar].layout()->parindent;
 542                 }
 543         }
 544
 545         LyXFont const labelfont = getLabelFont(pit);
 546         switch (layout->margintype) {
 547         case MARGIN_DYNAMIC:
 548                 if (!layout->leftmargin.empty())
 549                         x += font_metrics::signedWidth(layout->leftmargin,
 550                                                   tclass.defaultfont());
 551                 if (!pars_[pit].getLabelstring().empty()) {
 552                         x += font_metrics::signedWidth(layout->labelindent,
 553                                                   labelfont);
 554                         x += font_metrics::width(pars_[pit].getLabelstring(),
 555                                             labelfont);
 556                         x += font_metrics::width(layout->labelsep, labelfont);
 557                 }
 558                 break;
 559
 560         case MARGIN_MANUAL:
 561                 x += font_metrics::signedWidth(layout->labelindent, labelfont);
 562                 // The width of an empty par, even with manual label, should be 0
 563                 if (!pars_[pit].empty() && pos >= pars_[pit].beginOfBody()) {
 564                         if (!pars_[pit].getLabelWidthString().empty()) {
 565                                 x += font_metrics::width(pars_[pit].getLabelWidthString(),
 566                                                labelfont);
 567                                 x += font_metrics::width(layout->labelsep, labelfont);
 568                         }
 569                 }
 570                 break;
 571
 572         case MARGIN_STATIC:
 573                 x += font_metrics::signedWidth(layout->leftmargin, tclass.defaultfont()) * 4
 574                         / (pars_[pit].getDepth() + 4);
 575                 break;
 576
 577         case MARGIN_FIRST_DYNAMIC:
 578                 if (layout->labeltype == LABEL_MANUAL) {
 579                         if (pos >= pars_[pit].beginOfBody()) {
 580                                 x += font_metrics::signedWidth(layout->leftmargin,
 581                                                           labelfont);
 582                         } else {
 583                                 x += font_metrics::signedWidth(layout->labelindent,
 584                                                           labelfont);
 585                         }
 586                 } else if (pos != 0
 587                            // Special case to fix problems with
 588                            // theorems (JMarc)
 589                            || (layout->labeltype == LABEL_STATIC
 590                                && layout->latextype == LATEX_ENVIRONMENT
 591                                && !isFirstInSequence(pit, paragraphs()))) {
 592                         x += font_metrics::signedWidth(layout->leftmargin,
 593                                                   labelfont);
 594                 } else if (layout->labeltype != LABEL_TOP_ENVIRONMENT
 595                            && layout->labeltype != LABEL_BIBLIO
 596                            && layout->labeltype !=
 597                            LABEL_CENTERED_TOP_ENVIRONMENT) {
 598                         x += font_metrics::signedWidth(layout->labelindent,
 599                                                   labelfont);
 600                         x += font_metrics::width(layout->labelsep, labelfont);
 601                         x += font_metrics::width(pars_[pit].getLabelstring(),
 602                                             labelfont);
 603                 }
 604                 break;
 605
 606         case MARGIN_RIGHT_ADDRESS_BOX: {
 607 #if 0
 608                 // ok, a terrible hack. The left margin depends on the widest
 609                 // row in this paragraph.
 610                 RowList::iterator rit = pars_[pit].rows.begin();
 611                 RowList::iterator end = pars_[pit].rows.end();
 612 #ifdef WITH_WARNINGS
 613 #warning This is wrong.
 614 #endif
 615                 int minfill = maxwidth_;
 616                 for ( ; rit != end; ++rit)
 617                         if (rit->fill() < minfill)
 618                                 minfill = rit->fill();
 619                 x += font_metrics::signedWidth(layout->leftmargin,
 620                         tclass.defaultfont());
 621                 x += minfill;
 622 #endif
 623                 // also wrong, but much shorter.
 624                 x += maxwidth_ / 2;
 625                 break;
 626         }
 627         }
 628
 629
 630         if (!pars_[pit].params().leftIndent().zero())
 631                 x += pars_[pit].params().leftIndent().inPixels(maxwidth_);
 632
 633         LyXAlignment align;
 634
 635         if (pars_[pit].params().align() == LYX_ALIGN_LAYOUT)
 636                 align = layout->align;
 637         else
 638                 align = pars_[pit].params().align();
 639
 640         // set the correct parindent
 641         if (pos == 0
 642             && (layout->labeltype == LABEL_NO_LABEL
 643                || layout->labeltype == LABEL_TOP_ENVIRONMENT
 644                || layout->labeltype == LABEL_CENTERED_TOP_ENVIRONMENT
 645                || (layout->labeltype == LABEL_STATIC
 646                    && layout->latextype == LATEX_ENVIRONMENT
 647                    && !isFirstInSequence(pit, paragraphs())))
 648             && align == LYX_ALIGN_BLOCK
 649             && !pars_[pit].params().noindent()
 650             // in tabulars and ert paragraphs are never indented!
 651             && (pars_[pit].ownerCode() != InsetOld::TABULAR_CODE
 652                     && pars_[pit].ownerCode() != InsetOld::ERT_CODE)
 653             && (pars_[pit].layout() != tclass.defaultLayout()
 654                 || bv()->buffer()->params().paragraph_separation ==
 655                    BufferParams::PARSEP_INDENT))
 656         {
 657                 x += font_metrics::signedWidth(parindent, tclass.defaultfont());
 658         }
 659
 660         return x;
 661 }
 662
 663
 664 int LyXText::rightMargin(Paragraph const & par) const
 665 {
 666         LyXTextClass const & tclass = bv()->buffer()->params().getLyXTextClass();
 667
 668         return
 669                 RIGHT_MARGIN
 670                 + font_metrics::signedWidth(tclass.rightmargin(),
 671                                        tclass.defaultfont())
 672                 + font_metrics::signedWidth(par.layout()->rightmargin,
 673                                        tclass.defaultfont())
 674                 * 4 / (par.getDepth() + 4);
 675 }
 676
 677
 678 int LyXText::labelEnd(par_type pit) const
 679 {
 680         // labelEnd is only needed if the layout fills a flushleft label.
 681         if (pars_[pit].layout()->margintype != MARGIN_MANUAL)
 682                 return 0;
 683         // return the beginning of the body
 684         return leftMargin(pit);
 685 }
 686
 687
 688 namespace {
 689
 690 // this needs special handling - only newlines count as a break point
 691 pos_type addressBreakPoint(pos_type i, Paragraph const & par)
 692 {
 693         pos_type const end = par.size();
 694
 695         for (; i < end; ++i)
 696                 if (par.isNewline(i))
 697                         return i + 1;
 698
 699         return end;
 700 }
 701
 702 };
 703
 704
 705 void LyXText::rowBreakPoint(par_type pit, Row & row) const
 706 {
 707         pos_type const end = pars_[pit].size();
 708         pos_type const pos = row.pos();
 709         if (pos == end) {
 710                 row.endpos(end);
 711                 return;
 712         }
 713
 714         // maximum pixel width of a row
 715         int width = maxwidth_ - rightMargin(pars_[pit]); // - leftMargin(pit, row);
 716         if (width < 0) {
 717                 row.endpos(end);
 718                 return;
 719         }
 720
 721         LyXLayout_ptr const & layout = pars_[pit].layout();
 722
 723         if (layout->margintype == MARGIN_RIGHT_ADDRESS_BOX) {
 724                 row.endpos(addressBreakPoint(pos, pars_[pit]));
 725                 return;
 726         }
 727
 728         pos_type const body_pos = pars_[pit].beginOfBody();
 729
 730
 731         // Now we iterate through until we reach the right margin
 732         // or the end of the par, then choose the possible break
 733         // nearest that.
 734
 735         int const left = leftMargin(pit, pos);
 736         int x = left;
 737
 738         // pixel width since last breakpoint
 739         int chunkwidth = 0;
 740
 741         FontIterator fi = FontIterator(*this, pit, pos);
 742         pos_type point = end;
 743         pos_type i = pos;
 744         for ( ; i < end; ++i, ++fi) {
 745                 char const c = pars_[pit].getChar(i);
 746
 747                 {
 748                         int thiswidth = singleWidth(pit, i, c, *fi);
 749
 750                         // add the auto-hfill from label end to the body
 751                         if (body_pos && i == body_pos) {
 752                                 int add = font_metrics::width(layout->labelsep, getLabelFont(pit));
 753                                 if (pars_[pit].isLineSeparator(i - 1))
 754                                         add -= singleWidth(pit, i - 1);
 755
 756                                 add = std::max(add, labelEnd(pit) - x);
 757                                 thiswidth += add;
 758                         }
 759
 760                         x += thiswidth;
 761                         chunkwidth += thiswidth;
 762                 }
 763
 764                 // break before a character that will fall off
 765                 // the right of the row
 766                 if (x >= width) {
 767                         // if no break before, break here
 768                         if (point == end || chunkwidth >= width - left) {
 769                                 if (i > pos)
 770                                         point = i;
 771                                 else
 772                                         point = i + 1;
 773
 774                         }
 775                         // exit on last registered breakpoint:
 776                         break;
 777                 }
 778
 779                 if (pars_[pit].isNewline(i)) {
 780                         point = i + 1;
 781                         break;
 782                 }
 783                 // Break before...
 784                 if (i + 1 < end) {
 785                         if (pars_[pit].isInset(i + 1) && pars_[pit].getInset(i + 1)->display()) {
 786                                 point = i + 1;
 787                                 break;
 788                         }
 789                         // ...and after.
 790                         if (pars_[pit].isInset(i) && pars_[pit].getInset(i)->display()) {
 791                                 point = i + 1;
 792                                 break;
 793                         }
 794                 }
 795
 796                 if (!pars_[pit].isInset(i) || pars_[pit].getInset(i)->isChar()) {
 797                         // some insets are line separators too
 798                         if (pars_[pit].isLineSeparator(i)) {
 799                                 // register breakpoint:
 800                                 point = i + 1;
 801                                 chunkwidth = 0;
 802                         }
 803                 }
 804         }
 805
 806         // maybe found one, but the par is short enough.
 807         if (i == end && x < width)
 808                 point = end;
 809
 810         // manual labels cannot be broken in LaTeX. But we
 811         // want to make our on-screen rendering of footnotes
 812         // etc. still break
 813         if (body_pos && point < body_pos)
 814                 point = body_pos;
 815
 816         row.endpos(point);
 817 }
 818
 819
 820 void LyXText::setRowWidth(par_type pit, Row & row) const
 821 {
 822         // get the pure distance
 823         pos_type const end = row.endpos();
 824
 825         string labelsep = pars_[pit].layout()->labelsep;
 826         int w = leftMargin(pit, row.pos());
 827
 828         pos_type const body_pos = pars_[pit].beginOfBody();
 829         pos_type i = row.pos();
 830
 831         if (i < end) {
 832                 FontIterator fi = FontIterator(*this, pit, i);
 833                 for ( ; i < end; ++i, ++fi) {
 834                         if (body_pos > 0 && i == body_pos) {
 835                                 w += font_metrics::width(labelsep, getLabelFont(pit));
 836                                 if (pars_[pit].isLineSeparator(i - 1))
 837                                         w -= singleWidth(pit, i - 1);
 838                                 w = max(w, labelEnd(pit));
 839                         }
 840                         char const c = pars_[pit].getChar(i);
 841                         w += singleWidth(pit, i, c, *fi);
 842                 }
 843         }
 844
 845         if (body_pos > 0 && body_pos >= end) {
 846                 w += font_metrics::width(labelsep, getLabelFont(pit));
 847                 if (end > 0 && pars_[pit].isLineSeparator(end - 1))
 848                         w -= singleWidth(pit, end - 1);
 849                 w = max(w, labelEnd(pit));
 850         }
 851
 852         row.width(w + rightMargin(pars_[pit]));
 853 }
 854
 855
 856 // returns the minimum space a manual label needs on the screen in pixel
 857 int LyXText::labelFill(par_type pit, Row const & row) const
 858 {
 859         pos_type last = pars_[pit].beginOfBody();
 860
 861         BOOST_ASSERT(last > 0);
 862
 863         // -1 because a label ends with a space that is in the label
 864         --last;
 865
 866         // a separator at this end does not count
 867         if (pars_[pit].isLineSeparator(last))
 868                 --last;
 869
 870         int w = 0;
 871         for (pos_type i = row.pos(); i <= last; ++i)
 872                 w += singleWidth(pit, i);
 873
 874         string const & label = pars_[pit].params().labelWidthString();
 875         if (label.empty())
 876                 return 0;
 877
 878         return max(0, font_metrics::width(label, getLabelFont(pit)) - w);
 879 }
 880
 881
 882 LColor_color LyXText::backgroundColor() const
 883 {
 884         return LColor_color(LColor::color(background_color_));
 885 }
 886
 887
 888 void LyXText::setHeightOfRow(par_type pit, Row & row)
 889 {
 890         // get the maximum ascent and the maximum descent
 891         double layoutasc = 0;
 892         double layoutdesc = 0;
 893         double const dh = defaultRowHeight();
 894
 895         // ok, let us initialize the maxasc and maxdesc value.
 896         // Only the fontsize count. The other properties
 897         // are taken from the layoutfont. Nicer on the screen :)
 898         LyXLayout_ptr const & layout = pars_[pit].layout();
 899
 900         // as max get the first character of this row then it can
 901         // increase but not decrease the height. Just some point to
 902         // start with so we don't have to do the assignment below too
 903         // often.
 904         LyXFont font = getFont(pit, row.pos());
 905         LyXFont::FONT_SIZE const tmpsize = font.size();
 906         font = getLayoutFont(pit);
 907         LyXFont::FONT_SIZE const size = font.size();
 908         font.setSize(tmpsize);
 909
 910         LyXFont labelfont = getLabelFont(pit);
 911
 912         // these are minimum values
 913         double const spacing_val =
 914                 layout->spacing.getValue() * spacing(pars_[pit]);
 915         //lyxerr << "spacing_val = " << spacing_val << endl;
 916         int maxasc  = int(font_metrics::maxAscent(font)  * spacing_val);
 917         int maxdesc = int(font_metrics::maxDescent(font) * spacing_val);
 918
 919         // insets may be taller
 920         InsetList::const_iterator ii = pars_[pit].insetlist.begin();
 921         InsetList::const_iterator iend = pars_[pit].insetlist.end();
 922         for ( ; ii != iend; ++ii) {
 923                 if (ii->pos >= row.pos() && ii->pos < row.endpos()) {
 924                         maxasc  = max(maxasc,  ii->inset->ascent());
 925                         maxdesc = max(maxdesc, ii->inset->descent());
 926                 }
 927         }
 928
 929         // Check if any custom fonts are larger (Asger)
 930         // This is not completely correct, but we can live with the small,
 931         // cosmetic error for now.
 932         int labeladdon = 0;
 933         pos_type const pos_end = row.endpos();
 934
 935         LyXFont::FONT_SIZE maxsize =
 936                 pars_[pit].highestFontInRange(row.pos(), pos_end, size);
 937         if (maxsize > font.size()) {
 938                 font.setSize(maxsize);
 939                 maxasc  = max(maxasc,  font_metrics::maxAscent(font));
 940                 maxdesc = max(maxdesc, font_metrics::maxDescent(font));
 941         }
 942
 943         // This is nicer with box insets:
 944         ++maxasc;
 945         ++maxdesc;
 946
 947         row.ascent_of_text(maxasc);
 948
 949         // is it a top line?
 950         if (row.pos() == 0) {
 951                 BufferParams const & bufparams = bv()->buffer()->params();
 952                 // some parksips VERY EASY IMPLEMENTATION
 953                 if (bv()->buffer()->params().paragraph_separation
 954                     == BufferParams::PARSEP_SKIP
 955                         && pit != 0
 956                         && ((layout->isParagraph() && pars_[pit].getDepth() == 0)
 957                             || (pars_[pit - 1].layout()->isParagraph()
 958                                 && pars_[pit - 1].getDepth() == 0)))
 959                 {
 960                                 maxasc += bufparams.getDefSkip().inPixels(*bv());
 961                 }
 962
 963                 if (pars_[pit].params().startOfAppendix())
 964                         maxasc += int(3 * dh);
 965
 966                 // This is special code for the chapter, since the label of this
 967                 // layout is printed in an extra row
 968                 if (layout->counter == "chapter" && bufparams.secnumdepth >= 0) {
 969                         labeladdon = int(font_metrics::maxHeight(labelfont)
 970                                      * layout->spacing.getValue()
 971                                      * spacing(pars_[pit]));
 972                 }
 973
 974                 // special code for the top label
 975                 if ((layout->labeltype == LABEL_TOP_ENVIRONMENT
 976                      || layout->labeltype == LABEL_BIBLIO
 977                      || layout->labeltype == LABEL_CENTERED_TOP_ENVIRONMENT)
 978                     && isFirstInSequence(pit, paragraphs())
 979                     && !pars_[pit].getLabelstring().empty())
 980                 {
 981                         labeladdon = int(
 982                                   font_metrics::maxHeight(labelfont)
 983                                         * layout->spacing.getValue()
 984                                         * spacing(pars_[pit])
 985                                 + (layout->topsep + layout->labelbottomsep) * dh);
 986                 }
 987
 988                 // Add the layout spaces, for example before and after
 989                 // a section, or between the items of a itemize or enumerate
 990                 // environment.
 991
 992                 par_type prev = depthHook(pit, pars_, pars_[pit].getDepth());
 993                 if (prev != pit
 994                     && pars_[prev].layout() == layout
 995                     && pars_[prev].getDepth() == pars_[pit].getDepth()
 996                     && pars_[prev].getLabelWidthString() == pars_[pit].getLabelWidthString())
 997                 {
 998                         layoutasc = layout->itemsep * dh;
 999                 } else if (pit != 0 || row.pos() != 0) {
1000                         if (layout->topsep > 0)
1001                                 layoutasc = layout->topsep * dh;
1002                 }
1003
1004                 prev = outerHook(pit, pars_);
1005                 if (prev != par_type(pars_.size())) {
1006                         maxasc += int(pars_[prev].layout()->parsep * dh);
1007                 } else if (pit != 0) {
1008                         if (pars_[pit - 1].getDepth() != 0 ||
1009                                         pars_[pit - 1].layout() == layout) {
1010                                 maxasc += int(layout->parsep * dh);
1011                         }
1012                 }
1013         }
1014
1015         // is it a bottom line?
1016         if (row.endpos() >= pars_[pit].size()) {
1017                 // add the layout spaces, for example before and after
1018                 // a section, or between the items of a itemize or enumerate
1019                 // environment
1020                 par_type nextpit = pit + 1;
1021                 if (nextpit != par_type(pars_.size())) {
1022                         par_type cpit = pit;
1023                         double usual = 0;
1024                         double unusual = 0;
1025
1026                         if (pars_[cpit].getDepth() > pars_[nextpit].getDepth()) {
1027                                 usual = pars_[cpit].layout()->bottomsep * dh;
1028                                 cpit = depthHook(cpit, paragraphs(), pars_[nextpit].getDepth());
1029                                 if (pars_[cpit].layout() != pars_[nextpit].layout()
1030                                         || pars_[nextpit].getLabelWidthString() != pars_[cpit].getLabelWidthString())
1031                                 {
1032                                         unusual = pars_[cpit].layout()->bottomsep * dh;
1033                                 }
1034                                 layoutdesc = max(unusual, usual);
1035                         } else if (pars_[cpit].getDepth() == pars_[nextpit].getDepth()) {
1036                                 if (pars_[cpit].layout() != pars_[nextpit].layout()
1037                                         || pars_[nextpit].getLabelWidthString() != pars_[cpit].getLabelWidthString())
1038                                         layoutdesc = int(pars_[cpit].layout()->bottomsep * dh);
1039                         }
1040                 }
1041         }
1042
1043         // incalculate the layout spaces
1044         maxasc  += int(layoutasc  * 2 / (2 + pars_[pit].getDepth()));
1045         maxdesc += int(layoutdesc * 2 / (2 + pars_[pit].getDepth()));
1046
1047         row.height(maxasc + maxdesc + labeladdon);
1048         row.baseline(maxasc + labeladdon);
1049         row.top_of_text(row.baseline() - font_metrics::maxAscent(font));
1050 }
1051
1052
1053 void LyXText::breakParagraph(LCursor & cur, char keep_layout)
1054 {
1055         BOOST_ASSERT(this == cur.text());
1056         // allow only if at start or end, or all previous is new text
1057         Paragraph & cpar = cur.paragraph();
1058         par_type cpit = cur.par();
1059
1060         if (cur.pos() != 0 && cur.pos() != cur.lastpos()
1061             && cpar.isChangeEdited(0, cur.pos()))
1062                 return;
1063
1064         LyXTextClass const & tclass = cur.buffer().params().getLyXTextClass();
1065         LyXLayout_ptr const & layout = cpar.layout();
1066
1067         // this is only allowed, if the current paragraph is not empty
1068         // or caption and if it has not the keepempty flag active
1069         if (cur.lastpos() == 0 && !cpar.allowEmpty()
1070            && layout->labeltype != LABEL_SENSITIVE)
1071                 return;
1072
1073         // a layout change may affect also the following paragraph
1074         recUndo(cur.par(), undoSpan(cur.par()) - 1);
1075
1076         // Always break behind a space
1077         // It is better to erase the space (Dekel)
1078         if (cur.pos() != cur.lastpos() && cpar.isLineSeparator(cur.pos()))
1079                 cpar.erase(cur.pos());
1080
1081         // break the paragraph
1082         if (keep_layout)
1083                 keep_layout = 2;
1084         else
1085                 keep_layout = layout->isEnvironment();
1086
1087         // we need to set this before we insert the paragraph. IMO the
1088         // breakParagraph call should return a bool if it inserts the
1089         // paragraph before or behind and we should react on that one
1090         // but we can fix this in 1.3.0 (Jug 20020509)
1091         bool const isempty = cpar.allowEmpty() && cpar.empty();
1092         ::breakParagraph(cur.buffer().params(), paragraphs(), cpit,
1093                          cur.pos(), keep_layout);
1094
1095         cpit = cur.par();
1096         par_type next_par = cpit + 1;
1097
1098         // well this is the caption hack since one caption is really enough
1099         if (layout->labeltype == LABEL_SENSITIVE) {
1100                 if (!cur.pos())
1101                         // set to standard-layout
1102                         pars_[cpit].applyLayout(tclass.defaultLayout());
1103                 else
1104                         // set to standard-layout
1105                         pars_[next_par].applyLayout(tclass.defaultLayout());
1106         }
1107
1108         // if the cursor is at the beginning of a row without prior newline,
1109         // move one row up!
1110         // This touches only the screen-update. Otherwise we would may have
1111         // an empty row on the screen
1112         if (cur.pos() != 0 && cur.textRow().pos() == cur.pos()
1113             && !pars_[cpit].isNewline(cur.pos() - 1))
1114         {
1115                 cursorLeft(cur);
1116         }
1117
1118         while (!pars_[next_par].empty() && pars_[next_par].isNewline(0))
1119                 pars_[next_par].erase(0);
1120
1121         updateCounters();
1122         redoParagraph(cpit);
1123         redoParagraph(next_par);
1124
1125         // This check is necessary. Otherwise the new empty paragraph will
1126         // be deleted automatically. And it is more friendly for the user!
1127         if (cur.pos() != 0 || isempty)
1128                 setCursor(cur, cur.par() + 1, 0);
1129         else
1130                 setCursor(cur, cur.par(), 0);
1131 }
1132
1133
1134 // convenience function
1135 void LyXText::redoParagraph(LCursor & cur)
1136 {
1137         BOOST_ASSERT(this == cur.text());
1138         cur.clearSelection();
1139         redoParagraph(cur.par());
1140         setCursorIntern(cur, cur.par(), cur.pos());
1141 }
1142
1143
1144 // insert a character, moves all the following breaks in the
1145 // same Paragraph one to the right and make a rebreak
1146 void LyXText::insertChar(LCursor & cur, char c)
1147 {
1148         BOOST_ASSERT(this == cur.text());
1149         BOOST_ASSERT(c != Paragraph::META_INSET);
1150
1151         recordUndo(cur, Undo::INSERT);
1152
1153         Paragraph & par = cur.paragraph();
1154         // try to remove this
1155         par_type pit = cur.par();
1156
1157         bool const freeSpacing = par.layout()->free_spacing ||
1158                 par.isFreeSpacing();
1159
1160         if (lyxrc.auto_number) {
1161                 static string const number_operators = "+-/*";
1162                 static string const number_unary_operators = "+-";
1163                 static string const number_seperators = ".,:";
1164
1165                 if (current_font.number() == LyXFont::ON) {
1166                         if (!IsDigit(c) && !contains(number_operators, c) &&
1167                             !(contains(number_seperators, c) &&
1168                               cur.pos() != 0 &&
1169                               cur.pos() != cur.lastpos() &&
1170                               getFont(pit, cur.pos()).number() == LyXFont::ON &&
1171                               getFont(pit, cur.pos() - 1).number() == LyXFont::ON)
1172                            )
1173                                 number(cur); // Set current_font.number to OFF
1174                 } else if (IsDigit(c) &&
1175                            real_current_font.isVisibleRightToLeft()) {
1176                         number(cur); // Set current_font.number to ON
1177
1178                         if (cur.pos() != 0) {
1179                                 char const c = par.getChar(cur.pos() - 1);
1180                                 if (contains(number_unary_operators, c) &&
1181                                     (cur.pos() == 1
1182                                      || par.isSeparator(cur.pos() - 2)
1183                                      || par.isNewline(cur.pos() - 2))
1184                                   ) {
1185                                         setCharFont(pit, cur.pos() - 1, current_font);
1186                                 } else if (contains(number_seperators, c)
1187                                      && cur.pos() >= 2
1188                                      && getFont(pit, cur.pos() - 2).number() == LyXFont::ON) {
1189                                         setCharFont(pit, cur.pos() - 1, current_font);
1190                                 }
1191                         }
1192                 }
1193         }
1194
1195         // First check, if there will be two blanks together or a blank at
1196         // the beginning of a paragraph.
1197         // I decided to handle blanks like normal characters, the main
1198         // difference are the special checks when calculating the row.fill
1199         // (blank does not count at the end of a row) and the check here
1200
1201         // The bug is triggered when we type in a description environment:
1202         // The current_font is not changed when we go from label to main text
1203         // and it should (along with realtmpfont) when we type the space.
1204         // CHECK There is a bug here! (Asger)
1205
1206         // store the current font.  This is because of the use of cursor
1207         // movements. The moving cursor would refresh the current font
1208         LyXFont realtmpfont = real_current_font;
1209         LyXFont rawtmpfont = current_font;
1210
1211         // When the free-spacing option is set for the current layout,
1212         // disable the double-space checking
1213         if (!freeSpacing && IsLineSeparatorChar(c)) {
1214                 if (cur.pos() == 0) {
1215                         static bool sent_space_message = false;
1216                         if (!sent_space_message) {
1217                                 cur.message(_("You cannot insert a space at the "
1218                                         "beginning of a paragraph. Please read the Tutorial."));
1219                                 sent_space_message = true;
1220                                 return;
1221                         }
1222                 }
1223                 BOOST_ASSERT(cur.pos() > 0);
1224                 if (par.isLineSeparator(cur.pos() - 1)
1225                     || par.isNewline(cur.pos() - 1)) {
1226                         static bool sent_space_message = false;
1227                         if (!sent_space_message) {
1228                                 cur.message(_("You cannot type two spaces this way. "
1229                                         "Please read the Tutorial."));
1230                                 sent_space_message = true;
1231                         }
1232                         return;
1233                 }
1234         }
1235
1236         par.insertChar(cur.pos(), c);
1237         setCharFont(pit, cur.pos(), rawtmpfont);
1238
1239         current_font = rawtmpfont;
1240         real_current_font = realtmpfont;
1241         redoParagraph(cur);
1242         setCursor(cur, cur.par(), cur.pos() + 1, false, cur.boundary());
1243         charInserted();
1244 }
1245
1246
1247 void LyXText::charInserted()
1248 {
1249         // Here we call finishUndo for every 20 characters inserted.
1250         // This is from my experience how emacs does it. (Lgb)
1251         static unsigned int counter;
1252         if (counter < 20) {
1253                 ++counter;
1254         } else {
1255                 finishUndo();
1256                 counter = 0;
1257         }
1258 }
1259
1260
1261 RowMetrics LyXText::computeRowMetrics(par_type pit, Row const & row) const
1262 {
1263         RowMetrics result;
1264
1265         double w = width_ - row.width();
1266
1267         bool const is_rtl = isRTL(pars_[pit]);
1268         if (is_rtl)
1269                 result.x = rightMargin(pars_[pit]);
1270         else
1271                 result.x = leftMargin(pit, row.pos());
1272
1273         // is there a manual margin with a manual label
1274         LyXLayout_ptr const & layout = pars_[pit].layout();
1275
1276         if (layout->margintype == MARGIN_MANUAL
1277             && layout->labeltype == LABEL_MANUAL) {
1278                 /// We might have real hfills in the label part
1279                 int nlh = numberOfLabelHfills(pars_[pit], row);
1280
1281                 // A manual label par (e.g. List) has an auto-hfill
1282                 // between the label text and the body of the
1283                 // paragraph too.
1284                 // But we don't want to do this auto hfill if the par
1285                 // is empty.
1286                 if (!pars_[pit].empty())
1287                         ++nlh;
1288
1289                 if (nlh && !pars_[pit].getLabelWidthString().empty())
1290                         result.label_hfill = labelFill(pit, row) / double(nlh);
1291         }
1292
1293         // are there any hfills in the row?
1294         int const nh = numberOfHfills(pars_[pit], row);
1295
1296         if (nh) {
1297                 if (w > 0)
1298                         result.hfill = w / nh;
1299         // we don't have to look at the alignment if it is ALIGN_LEFT and
1300         // if the row is already larger then the permitted width as then
1301         // we force the LEFT_ALIGN'edness!
1302         } else if (int(row.width()) < maxwidth_) {
1303                 // is it block, flushleft or flushright?
1304                 // set x how you need it
1305                 int align;
1306                 if (pars_[pit].params().align() == LYX_ALIGN_LAYOUT)
1307                         align = layout->align;
1308                 else
1309                         align = pars_[pit].params().align();
1310
1311                 // Display-style insets should always be on a centred row
1312                 // The test on pars_[pit].size() is to catch zero-size pars, which
1313                 // would trigger the assert in Paragraph::getInset().
1314                 //inset = pars_[pit].size() ? pars_[pit].getInset(row.pos()) : 0;
1315                 if (!pars_[pit].empty()
1316                     && pars_[pit].isInset(row.pos())
1317                     && pars_[pit].getInset(row.pos())->display())
1318                 {
1319                         align = LYX_ALIGN_CENTER;
1320                 }
1321
1322                 switch (align) {
1323                 case LYX_ALIGN_BLOCK: {
1324                         int const ns = numberOfSeparators(pars_[pit], row);
1325                         bool disp_inset = false;
1326                         if (row.endpos() < pars_[pit].size()) {
1327                                 InsetBase const * in = pars_[pit].getInset(row.endpos());
1328                                 if (in)
1329                                         disp_inset = in->display();
1330                         }
1331                         // If we have separators, this is not the last row of a
1332                         // par, does not end in newline, and is not row above a
1333                         // display inset... then stretch it
1334                         if (ns
1335                             && row.endpos() < pars_[pit].size()
1336                             && !pars_[pit].isNewline(row.endpos() - 1)
1337                             && !disp_inset
1338                                 ) {
1339                                 result.separator = w / ns;
1340                         } else if (is_rtl) {
1341                                 result.x += w;
1342                         }
1343                         break;
1344                 }
1345                 case LYX_ALIGN_RIGHT:
1346                         result.x += w;
1347                         break;
1348                 case LYX_ALIGN_CENTER:
1349                         result.x += w / 2;
1350                         break;
1351                 }
1352         }
1353
1354         bidi.computeTables(pars_[pit], *bv()->buffer(), row);
1355         if (is_rtl) {
1356                 pos_type body_pos = pars_[pit].beginOfBody();
1357                 pos_type end = row.endpos();
1358
1359                 if (body_pos > 0
1360                     && (body_pos > end || !pars_[pit].isLineSeparator(body_pos - 1)))
1361                 {
1362                         result.x += font_metrics::width(layout->labelsep, getLabelFont(pit));
1363                         if (body_pos <= end)
1364                                 result.x += result.label_hfill;
1365                 }
1366         }
1367
1368         return result;
1369 }
1370
1371
1372 // the cursor set functions have a special mechanism. When they
1373 // realize, that you left an empty paragraph, they will delete it.
1374
1375 void LyXText::cursorRightOneWord(LCursor & cur)
1376 {
1377         BOOST_ASSERT(this == cur.text());
1378         if (cur.pos() == cur.lastpos() && cur.par() != cur.lastpar()) {
1379                 ++cur.par();
1380                 cur.pos() = 0;
1381         } else {
1382                 // Skip through initial nonword stuff.
1383                 // Treat floats and insets as words.
1384                 while (cur.pos() != cur.lastpos() && !cur.paragraph().isWord(cur.pos()))
1385                         ++cur.pos();
1386                 // Advance through word.
1387                 while (cur.pos() != cur.lastpos() && cur.paragraph().isWord(cur.pos()))
1388                         ++cur.pos();
1389         }
1390         setCursor(cur, cur.par(), cur.pos());
1391 }
1392
1393
1394 void LyXText::cursorLeftOneWord(LCursor & cur)
1395 {
1396         BOOST_ASSERT(this == cur.text());
1397         if (cur.pos() == 0 && cur.par() != 0) {
1398                 --cur.par();
1399                 cur.pos() = cur.lastpos();
1400         } else {
1401                 // Skip through initial nonword stuff.
1402                 // Treat floats and insets as words.
1403                 while (cur.pos() != 0 && !cur.paragraph().isWord(cur.pos() - 1))
1404                         --cur.pos();
1405                 // Advance through word.
1406                 while (cur.pos() != 0 && cur.paragraph().isWord(cur.pos() - 1))
1407                         --cur.pos();
1408         }
1409         setCursor(cur, cur.par(), cur.pos());
1410 }
1411
1412
1413 void LyXText::selectWord(LCursor & cur, word_location loc)
1414 {
1415         BOOST_ASSERT(this == cur.text());
1416         CursorSlice from = cur.top();
1417         CursorSlice to = cur.top();
1418         getWord(from, to, loc);
1419         if (cur.top() != from)
1420                 setCursor(cur, from.par(), from.pos());
1421         if (to == from)
1422                 return;
1423         cur.resetAnchor();
1424         setCursor(cur, to.par(), to.pos());
1425         cur.setSelection();
1426 }
1427
1428
1429 // Select the word currently under the cursor when no
1430 // selection is currently set
1431 bool LyXText::selectWordWhenUnderCursor(LCursor & cur, word_location loc)
1432 {
1433         BOOST_ASSERT(this == cur.text());
1434         if (cur.selection())
1435                 return false;
1436         selectWord(cur, loc);
1437         return cur.selection();
1438 }
1439
1440
1441 void LyXText::acceptChange(LCursor & cur)
1442 {
1443         BOOST_ASSERT(this == cur.text());
1444         if (!cur.selection() && cur.lastpos() != 0)
1445                 return;
1446
1447         CursorSlice const & startc = cur.selBegin();
1448         CursorSlice const & endc = cur.selEnd();
1449         if (startc.par() == endc.par()) {
1450                 recordUndoSelection(cur, Undo::INSERT);
1451                 pars_[startc.par()].acceptChange(startc.pos(), endc.pos());
1452                 finishUndo();
1453                 cur.clearSelection();
1454                 redoParagraph(startc.par());
1455                 setCursorIntern(cur, startc.par(), 0);
1456         }
1457 #ifdef WITH_WARNINGS
1458 #warning handle multi par selection
1459 #endif
1460 }
1461
1462
1463 void LyXText::rejectChange(LCursor & cur)
1464 {
1465         BOOST_ASSERT(this == cur.text());
1466         if (!cur.selection() && cur.lastpos() != 0)
1467                 return;
1468
1469         CursorSlice const & startc = cur.selBegin();
1470         CursorSlice const & endc = cur.selEnd();
1471         if (startc.par() == endc.par()) {
1472                 recordUndoSelection(cur, Undo::INSERT);
1473                 pars_[startc.par()].rejectChange(startc.pos(), endc.pos());
1474                 finishUndo();
1475                 cur.clearSelection();
1476                 redoParagraph(startc.par());
1477                 setCursorIntern(cur, startc.par(), 0);
1478         }
1479 #ifdef WITH_WARNINGS
1480 #warning handle multi par selection
1481 #endif
1482 }
1483
1484
1485 // Delete from cursor up to the end of the current or next word.
1486 void LyXText::deleteWordForward(LCursor & cur)
1487 {
1488         BOOST_ASSERT(this == cur.text());
1489         if (cur.lastpos() == 0)
1490                 cursorRight(cur);
1491         else {
1492                 cur.resetAnchor();
1493                 cur.selection() = true;
1494                 cursorRightOneWord(cur);
1495                 cur.setSelection();
1496                 cutSelection(cur, true, false);
1497         }
1498 }
1499
1500
1501 // Delete from cursor to start of current or prior word.
1502 void LyXText::deleteWordBackward(LCursor & cur)
1503 {
1504         BOOST_ASSERT(this == cur.text());
1505         if (cur.lastpos() == 0)
1506                 cursorLeft(cur);
1507         else {
1508                 cur.resetAnchor();
1509                 cur.selection() = true;
1510                 cursorLeftOneWord(cur);
1511                 cur.setSelection();
1512                 cutSelection(cur, true, false);
1513         }
1514 }
1515
1516
1517 // Kill to end of line.
1518 void LyXText::deleteLineForward(LCursor & cur)
1519 {
1520         BOOST_ASSERT(this == cur.text());
1521         if (cur.lastpos() == 0) {
1522                 // Paragraph is empty, so we just go to the right
1523                 cursorRight(cur);
1524         } else {
1525                 cur.resetAnchor();
1526                 cur.selection() = true; // to avoid deletion
1527                 cursorEnd(cur);
1528                 cur.setSelection();
1529                 // What is this test for ??? (JMarc)
1530                 if (!cur.selection())
1531                         deleteWordForward(cur);
1532                 else
1533                         cutSelection(cur, true, false);
1534         }
1535 }
1536
1537
1538 void LyXText::changeCase(LCursor & cur, LyXText::TextCase action)
1539 {
1540         BOOST_ASSERT(this == cur.text());
1541         CursorSlice from;
1542         CursorSlice to;
1543
1544         if (cur.selection()) {
1545                 from = cur.selBegin();
1546                 to = cur.selEnd();
1547         } else {
1548                 from = cur.top();
1549                 getWord(from, to, lyx::PARTIAL_WORD);
1550                 setCursor(cur, to.par(), to.pos() + 1);
1551         }
1552
1553         recordUndoSelection(cur);
1554
1555         pos_type pos = from.pos();
1556         int par = from.par();
1557
1558         while (par != int(pars_.size()) && (pos != to.pos() || par != to.par())) {
1559                 par_type pit = par;
1560                 if (pos == pars_[pit].size()) {
1561                         ++par;
1562                         pos = 0;
1563                         continue;
1564                 }
1565                 unsigned char c = pars_[pit].getChar(pos);
1566                 if (c != Paragraph::META_INSET) {
1567                         switch (action) {
1568                         case text_lowercase:
1569                                 c = lowercase(c);
1570                                 break;
1571                         case text_capitalization:
1572                                 c = uppercase(c);
1573                                 action = text_lowercase;
1574                                 break;
1575                         case text_uppercase:
1576                                 c = uppercase(c);
1577                                 break;
1578                         }
1579                 }
1580 #ifdef WITH_WARNINGS
1581 #warning changes
1582 #endif
1583                 pars_[pit].setChar(pos, c);
1584                 ++pos;
1585         }
1586 }
1587
1588
1589 void LyXText::Delete(LCursor & cur)
1590 {
1591         BOOST_ASSERT(this == cur.text());
1592         if (cur.pos() != cur.lastpos()) {
1593                 recordUndo(cur, Undo::DELETE, cur.par());
1594                 setCursorIntern(cur, cur.par(), cur.pos() + 1, false, cur.boundary());
1595                 backspace(cur);
1596         }
1597         // should we do anything in an else branch?
1598 }
1599
1600
1601 void LyXText::backspace(LCursor & cur)
1602 {
1603         BOOST_ASSERT(this == cur.text());
1604         if (cur.pos() == 0) {
1605                 // The cursor is at the beginning of a paragraph, so
1606                 // the the backspace will collapse two paragraphs into
1607                 // one.
1608
1609                 // but it's not allowed unless it's new
1610                 Paragraph & par = cur.paragraph();
1611                 if (par.isChangeEdited(0, par.size()))
1612                         return;
1613
1614                 // we may paste some paragraphs
1615
1616                 // is it an empty paragraph?
1617                 pos_type lastpos = cur.lastpos();
1618                 if (lastpos == 0 || (lastpos == 1 && par.isSeparator(0))) {
1619                         // This is an empty paragraph and we delete it just
1620                         // by moving the cursor one step
1621                         // left and let the DeleteEmptyParagraphMechanism
1622                         // handle the actual deletion of the paragraph.
1623
1624                         if (cur.par() != 0) {
1625                                 cursorLeft(cur);
1626                                 // the layout things can change the height of a row !
1627                                 redoParagraph(cur);
1628                                 return;
1629                         }
1630                 }
1631
1632                 if (cur.par() != 0)
1633                         recordUndo(cur, Undo::DELETE, cur.par() - 1);
1634
1635                 par_type tmppit = cur.par();
1636                 // We used to do cursorLeftIntern() here, but it is
1637                 // not a good idea since it triggers the auto-delete
1638                 // mechanism. So we do a cursorLeftIntern()-lite,
1639                 // without the dreaded mechanism. (JMarc)
1640                 if (cur.par() != 0) {
1641                         // steps into the above paragraph.
1642                         setCursorIntern(cur, cur.par() - 1,
1643                                         pars_[cur.par() - 1].size(),
1644                                         false);
1645                 }
1646
1647                 // Pasting is not allowed, if the paragraphs have different
1648                 // layout. I think it is a real bug of all other
1649                 // word processors to allow it. It confuses the user.
1650                 // Correction: Pasting is always allowed with standard-layout
1651                 Buffer & buf = cur.buffer();
1652                 BufferParams const & bufparams = buf.params();
1653                 LyXTextClass const & tclass = bufparams.getLyXTextClass();
1654                 par_type const cpit = cur.par();
1655
1656                 if (cpit != tmppit
1657                     && (pars_[cpit].layout() == pars_[tmppit].layout()
1658                         || pars_[tmppit].layout() == tclass.defaultLayout())
1659                     && pars_[cpit].getAlign() == pars_[tmppit].getAlign()) {
1660                         mergeParagraph(bufparams, buf.paragraphs(), cpit);
1661
1662                         if (cur.pos() != 0 && pars_[cpit].isSeparator(cur.pos() - 1))
1663                                 --cur.pos();
1664
1665                         // the counters may have changed
1666                         updateCounters();
1667                         setCursor(cur, cur.par(), cur.pos(), false);
1668                 }
1669         } else {
1670                 // this is the code for a normal backspace, not pasting
1671                 // any paragraphs
1672                 recordUndo(cur, Undo::DELETE);
1673                 // We used to do cursorLeftIntern() here, but it is
1674                 // not a good idea since it triggers the auto-delete
1675                 // mechanism. So we do a cursorLeftIntern()-lite,
1676                 // without the dreaded mechanism. (JMarc)
1677                 setCursorIntern(cur, cur.par(), cur.pos() - 1,
1678                                 false, cur.boundary());
1679                 cur.paragraph().erase(cur.pos());
1680         }
1681
1682         if (cur.pos() == cur.lastpos())
1683                 setCurrentFont(cur);
1684
1685         redoParagraph(cur);
1686         setCursor(cur, cur.par(), cur.pos(), false, cur.boundary());
1687 }
1688
1689
1690 Paragraph & LyXText::getPar(par_type par) const
1691 {
1692         //lyxerr << "getPar: " << par << " from " << paragraphs().size() << endl;
1693         BOOST_ASSERT(par >= 0);
1694         BOOST_ASSERT(par < int(paragraphs().size()));
1695         return paragraphs()[par];
1696 }
1697
1698
1699 // y is relative to this LyXText's top
1700 Row const & LyXText::getRowNearY(int y, par_type & pit) const
1701 {
1702         BOOST_ASSERT(!paragraphs().empty());
1703         BOOST_ASSERT(!paragraphs().begin()->rows.empty());
1704         par_type const pend = paragraphs().size() - 1;
1705         pit = 0;
1706         while (int(pars_[pit].y + pars_[pit].height) < y && pit != pend)
1707                 ++pit;
1708
1709         RowList::iterator rit = pars_[pit].rows.end();
1710         RowList::iterator const rbegin = pars_[pit].rows.begin();
1711         do {
1712                 --rit;
1713         } while (rit != rbegin && int(pars_[pit].y + rit->y_offset()) > y);
1714
1715         return *rit;
1716 }
1717
1718
1719 Row const & LyXText::firstRow() const
1720 {
1721         return *paragraphs().front().rows.begin();
1722 }
1723
1724
1725 void LyXText::redoParagraphInternal(par_type pit)
1726 {
1727         // remove rows of paragraph, keep track of height changes
1728         height_ -= pars_[pit].height;
1729
1730         // clear old data
1731         pars_[pit].rows.clear();
1732         pars_[pit].height = 0;
1733         pars_[pit].width = 0;
1734
1735         // redo insets
1736         InsetList::iterator ii = pars_[pit].insetlist.begin();
1737         InsetList::iterator iend = pars_[pit].insetlist.end();
1738         for (; ii != iend; ++ii) {
1739                 Dimension dim;
1740                 int const w = maxwidth_ - leftMargin(pit) - rightMargin(pars_[pit]);
1741                 MetricsInfo mi(bv(), getFont(pit, ii->pos), w);
1742                 ii->inset->metrics(mi, dim);
1743         }
1744
1745         // rebreak the paragraph
1746         pars_[pit].setBeginOfBody();
1747         pos_type z = 0;
1748         do {
1749                 Row row(z);
1750                 rowBreakPoint(pit, row);
1751                 setRowWidth(pit, row);
1752                 setHeightOfRow(pit, row);
1753                 row.y_offset(pars_[pit].height);
1754                 pars_[pit].rows.push_back(row);
1755                 pars_[pit].width = std::max(pars_[pit].width, row.width());
1756                 pars_[pit].height += row.height();
1757                 z = row.endpos();
1758         } while (z < pars_[pit].size());
1759
1760         height_ += pars_[pit].height;
1761         //lyxerr << "redoParagraph: " << pars_[pit].rows.size() << " rows\n";
1762 }
1763
1764
1765 void LyXText::redoParagraphs(par_type pit, par_type end)
1766 {
1767         for ( ; pit != end; ++pit)
1768                 redoParagraphInternal(pit);
1769         updateParPositions();
1770         updateCounters();
1771 }
1772
1773
1774 void LyXText::redoParagraph(par_type pit)
1775 {
1776         redoParagraphInternal(pit);
1777         updateParPositions();
1778 }
1779
1780
1781 void LyXText::fullRebreak()
1782 {
1783         redoParagraphs(0, paragraphs().size());
1784         bv()->cursor().resetAnchor();
1785 }
1786
1787
1788 void LyXText::metrics(MetricsInfo & mi, Dimension & dim)
1789 {
1790         //BOOST_ASSERT(mi.base.textwidth);
1791         if (mi.base.textwidth)
1792                 maxwidth_ = mi.base.textwidth;
1793         //lyxerr << "LyXText::metrics: width: " << mi.base.textwidth
1794         //<< " maxWidth: " << maxwidth << "\nfont: " << mi.base.font
1795         //<< endl;
1796
1797         // Rebuild row cache. This recomputes height as well.
1798         redoParagraphs(0, paragraphs().size());
1799
1800         width_ = maxParagraphWidth(paragraphs());
1801
1802         // final dimension
1803         dim.asc = firstRow().ascent_of_text();
1804         dim.des = height_ - dim.asc;
1805         dim.wid = width_;
1806 }
1807
1808
1809 // only used for inset right now. should also be used for main text
1810 void LyXText::draw(PainterInfo & pi, int x, int y) const
1811 {
1812         xo_ = x;
1813         yo_ = y;
1814         paintTextInset(*this, pi);
1815 }
1816
1817
1818 // only used for inset right now. should also be used for main text
1819 void LyXText::drawSelection(PainterInfo &, int, int) const
1820 {
1821         //lyxerr << "LyXText::drawSelection at " << x << " " << y << endl;
1822 }
1823
1824
1825 bool LyXText::isLastRow(par_type pit, Row const & row) const
1826 {
1827         return row.endpos() >= pars_[pit].size()
1828                 && pit + 1 == par_type(paragraphs().size());
1829 }
1830
1831
1832 bool LyXText::isFirstRow(par_type pit, Row const & row) const
1833 {
1834         return row.pos() == 0 && pit == 0;
1835 }
1836
1837
1838 void LyXText::getWord(CursorSlice & from, CursorSlice & to,
1839         word_location const loc)
1840 {
1841         Paragraph & from_par = pars_[from.par()];
1842         switch (loc) {
1843         case lyx::WHOLE_WORD_STRICT:
1844                 if (from.pos() == 0 || from.pos() == from_par.size()
1845                     || from_par.isSeparator(from.pos())
1846                     || from_par.isKomma(from.pos())
1847                     || from_par.isNewline(from.pos())
1848                     || from_par.isSeparator(from.pos() - 1)
1849                     || from_par.isKomma(from.pos() - 1)
1850                     || from_par.isNewline(from.pos() - 1)) {
1851                         to = from;
1852                         return;
1853                 }
1854                 // no break here, we go to the next
1855
1856         case lyx::WHOLE_WORD:
1857                 // Move cursor to the beginning, when not already there.
1858                 if (from.pos() && !from_par.isSeparator(from.pos() - 1)
1859                     && !(from_par.isKomma(from.pos() - 1)
1860                          || from_par.isNewline(from.pos() - 1)))
1861                         cursorLeftOneWord(bv()->cursor());
1862                 break;
1863         case lyx::PREVIOUS_WORD:
1864                 // always move the cursor to the beginning of previous word
1865                 cursorLeftOneWord(bv()->cursor());
1866                 break;
1867         case lyx::NEXT_WORD:
1868                 lyxerr << "LyXText::getWord: NEXT_WORD not implemented yet"
1869                        << endl;
1870                 break;
1871         case lyx::PARTIAL_WORD:
1872                 break;
1873         }
1874         to = from;
1875         Paragraph & to_par = pars_[to.par()];
1876         while (to.pos() < to_par.size()
1877                && !to_par.isSeparator(to.pos())
1878                && !to_par.isKomma(to.pos())
1879                && !to_par.isNewline(to.pos())
1880                && !to_par.isHfill(to.pos())
1881                && !to_par.isInset(to.pos()))
1882         {
1883                 ++to.pos();
1884         }
1885 }
1886
1887
1888 void LyXText::write(Buffer const & buf, std::ostream & os) const
1889 {
1890         ParagraphList::const_iterator pit = paragraphs().begin();
1891         ParagraphList::const_iterator end = paragraphs().end();
1892         Paragraph::depth_type dth = 0;
1893         for (; pit != end; ++pit)
1894                 pit->write(buf, os, buf.params(), dth);
1895 }
1896
1897
1898 bool LyXText::read(Buffer const & buf, LyXLex & lex)
1899 {
1900         static Change current_change;
1901
1902         bool the_end_read = false;
1903         Paragraph::depth_type depth = 0;
1904
1905         while (lex.isOK()) {
1906                 lex.nextToken();
1907                 string token = lex.getString();
1908
1909                 if (token.empty())
1910                         continue;
1911
1912                 if (token == "\\end_inset") {
1913                         the_end_read = true;
1914                         break;
1915                 }
1916
1917                 if (token == "\\end_document") {
1918 #ifdef WITH_WARNINGS
1919 #warning Look here!
1920 #endif
1921 #if 0
1922                         lex.printError("\\end_document read in inset! Error in document!");
1923 #endif
1924                         return false;
1925                 }
1926
1927                 // FIXME: ugly.
1928                 int unknown = 0;
1929
1930                 if (token == "\\begin_layout") {
1931                         lex.pushToken(token);
1932
1933                         Paragraph par;
1934                         par.params().depth(depth);
1935                         if (buf.params().tracking_changes)
1936                                 par.trackChanges();
1937                         par.setFont(0, LyXFont(LyXFont::ALL_INHERIT, buf.params().language));
1938                         pars_.push_back(par);
1939
1940                         // FIXME: goddamn InsetTabular makes us pass a Buffer
1941                         // not BufferParams
1942                         ::readParagraph(buf, pars_.back(), lex);
1943
1944                 } else if (token == "\\begin_deeper") {
1945                         ++depth;
1946                 } else if (token == "\\end_deeper") {
1947                         if (!depth) {
1948                                 lex.printError("\\end_deeper: " "depth is already null");
1949                         } else {
1950                                 --depth;
1951                         }
1952                 } else {
1953                         ++unknown;
1954                 }
1955
1956         }
1957         return the_end_read;
1958 }
1959
1960
1961 int LyXText::ascent() const
1962 {
1963         return firstRow().ascent_of_text();
1964 }
1965
1966
1967 int LyXText::descent() const
1968 {
1969         return height_ - firstRow().ascent_of_text();
1970 }
1971
1972
1973 int LyXText::cursorX(CursorSlice const & cur) const
1974 {
1975         par_type pit = cur.par();
1976         if (pars_[pit].rows.empty())
1977                 return xo_;
1978
1979         Row const & row = *pars_[pit].getRow(cur.pos());
1980
1981         pos_type pos = cur.pos();
1982         pos_type cursor_vpos = 0;
1983
1984         RowMetrics const m = computeRowMetrics(pit, row);
1985         double x = m.x;
1986
1987         pos_type const row_pos  = row.pos();
1988         pos_type const end      = row.endpos();
1989
1990         if (end <= row_pos)
1991                 cursor_vpos = row_pos;
1992         else if (pos >= end)
1993                 cursor_vpos = isRTL(pars_[pit]) ? row_pos : end;
1994         else if (pos > row_pos && pos >= end)
1995                 // Place cursor after char at (logical) position pos - 1
1996                 cursor_vpos = (bidi.level(pos - 1) % 2 == 0)
1997                         ? bidi.log2vis(pos - 1) + 1 : bidi.log2vis(pos - 1);
1998         else
1999                 // Place cursor before char at (logical) position pos
2000                 cursor_vpos = (bidi.level(pos) % 2 == 0)
2001                         ? bidi.log2vis(pos) : bidi.log2vis(pos) + 1;
2002
2003         pos_type body_pos = pars_[pit].beginOfBody();
2004         if (body_pos > 0 &&
2005             (body_pos > end || !pars_[pit].isLineSeparator(body_pos - 1)))
2006                 body_pos = 0;
2007
2008         for (pos_type vpos = row_pos; vpos < cursor_vpos; ++vpos) {
2009                 pos_type pos = bidi.vis2log(vpos);
2010                 if (body_pos > 0 && pos == body_pos - 1) {
2011                         x += m.label_hfill
2012                                 + font_metrics::width(pars_[pit].layout()->labelsep,
2013                                                       getLabelFont(pit));
2014                         if (pars_[pit].isLineSeparator(body_pos - 1))
2015                                 x -= singleWidth(pit, body_pos - 1);
2016                 }
2017
2018                 if (hfillExpansion(pars_[pit], row, pos)) {
2019                         x += singleWidth(pit, pos);
2020                         if (pos >= body_pos)
2021                                 x += m.hfill;
2022                         else
2023                                 x += m.label_hfill;
2024                 } else if (pars_[pit].isSeparator(pos)) {
2025                         x += singleWidth(pit, pos);
2026                         if (pos >= body_pos)
2027                                 x += m.separator;
2028                 } else
2029                         x += singleWidth(pit, pos);
2030         }
2031         return xo_ + int(x);
2032 }
2033
2034
2035 int LyXText::cursorY(CursorSlice const & cur) const
2036 {
2037         Paragraph & par = getPar(cur.par());
2038         Row & row = *par.getRow(cur.pos());
2039         return yo_ + par.y + row.y_offset() + row.baseline();
2040 }
2041
2042
2043 // Returns the current font and depth as a message.
2044 string LyXText::currentState(LCursor & cur)
2045 {
2046         BOOST_ASSERT(this == cur.text());
2047         Buffer & buf = cur.buffer();
2048         Paragraph const & par = cur.paragraph();
2049         std::ostringstream os;
2050
2051         bool const show_change = buf.params().tracking_changes
2052                 && cur.pos() != cur.lastpos()
2053                 && par.lookupChange(cur.pos()) != Change::UNCHANGED;
2054
2055         if (show_change) {
2056                 Change change = par.lookupChangeFull(cur.pos());
2057                 Author const & a = buf.params().authors().get(change.author);
2058                 os << _("Change: ") << a.name();
2059                 if (!a.email().empty())
2060                         os << " (" << a.email() << ")";
2061                 if (change.changetime)
2062                         os << _(" at ") << ctime(&change.changetime);
2063                 os << " : ";
2064         }
2065
2066         // I think we should only show changes from the default
2067         // font. (Asger)
2068         LyXFont font = real_current_font;
2069         font.reduce(buf.params().getLyXTextClass().defaultfont());
2070
2071         // avoid _(...) re-entrance problem
2072         string const s = font.stateText(&buf.params());
2073         os << bformat(_("Font: %1$s"), s);
2074
2075         // os << bformat(_("Font: %1$s"), font.stateText(&buf.params));
2076
2077         // The paragraph depth
2078         int depth = cur.paragraph().getDepth();
2079         if (depth > 0)
2080                 os << bformat(_(", Depth: %1$s"), tostr(depth));
2081
2082         // The paragraph spacing, but only if different from
2083         // buffer spacing.
2084         Spacing const & spacing = par.params().spacing();
2085         if (!spacing.isDefault()) {
2086                 os << _(", Spacing: ");
2087                 switch (spacing.getSpace()) {
2088                 case Spacing::Single:
2089                         os << _("Single");
2090                         break;
2091                 case Spacing::Onehalf:
2092                         os << _("OneHalf");
2093                         break;
2094                 case Spacing::Double:
2095                         os << _("Double");
2096                         break;
2097                 case Spacing::Other:
2098                         os << _("Other (") << spacing.getValue() << ')';
2099                         break;
2100                 case Spacing::Default:
2101                         // should never happen, do nothing
2102                         break;
2103                 }
2104         }
2105 #ifdef DEVEL_VERSION
2106         os << _(", Inset: ") << &cur.inset();
2107         os << _(", Paragraph: ") << cur.par();
2108         os << _(", Id: ") << par.id();
2109         os << _(", Position: ") << cur.pos();
2110         Row & row = cur.textRow();
2111         os << bformat(_(", Row b:%1$d e:%2$d"), row.pos(), row.endpos());
2112 #endif
2113         return os.str();
2114 }
2115
2116
2117 string LyXText::getPossibleLabel(LCursor & cur) const
2118 {
2119         par_type pit = cur.par();
2120
2121         LyXLayout_ptr layout = pars_[pit].layout();
2122
2123         if (layout->latextype == LATEX_PARAGRAPH && pit != 0) {
2124                 LyXLayout_ptr const & layout2 = pars_[pit - 1].layout();
2125                 if (layout2->latextype != LATEX_PARAGRAPH) {
2126                         --pit;
2127                         layout = layout2;
2128                 }
2129         }
2130
2131         string text = layout->latexname().substr(0, 3);
2132         if (layout->latexname() == "theorem")
2133                 text = "thm"; // Create a correct prefix for prettyref
2134
2135         text += ':';
2136         if (layout->latextype == LATEX_PARAGRAPH || lyxrc.label_init_length < 0)
2137                 text.erase();
2138
2139         string par_text = pars_[pit].asString(cur.buffer(), false);
2140         for (int i = 0; i < lyxrc.label_init_length; ++i) {
2141                 if (par_text.empty())
2142                         break;
2143                 string head;
2144                 par_text = split(par_text, head, ' ');
2145                 // Is it legal to use spaces in labels ?
2146                 if (i > 0)
2147                         text += '-';
2148                 text += head;
2149         }
2150
2151         return text;
2152 }
2153
2154
2155 int LyXText::dist(int x, int y) const
2156 {
2157         int xx = 0;
2158         int yy = 0;
2159
2160         if (x < xo_)
2161                 xx = xo_ - x;
2162         else if (x > xo_ + int(width_))
2163                 xx = x - xo_ - width_;
2164
2165         if (y < yo_ - ascent())
2166                 yy = yo_ - ascent() - y;
2167         else if (y > yo_ + descent())
2168                 yy = y - yo_ - descent();
2169
2170         return xx + yy;
2171 }