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