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 "buffer_funcs.h"
  24 #include "bufferparams.h"
  25 #include "BufferView.h"
  26 #include "cursor.h"
  27 #include "pariterator.h"
  28 #include "coordcache.h"
  29 #include "CutAndPaste.h"
  30 #include "debug.h"
  31 #include "dispatchresult.h"
  32 #include "encoding.h"
  33 #include "errorlist.h"
  34 #include "funcrequest.h"
  35 #include "factory.h"
  36 #include "FontIterator.h"
  37 #include "gettext.h"
  38 #include "language.h"
  39 #include "LColor.h"
  40 #include "lyxlength.h"
  41 #include "lyxlex.h"
  42 #include "lyxrc.h"
  43 #include "lyxrow.h"
  44 #include "metricsinfo.h"
  45 #include "paragraph.h"
  46 #include "paragraph_funcs.h"
  47 #include "ParagraphParameters.h"
  48 #include "rowpainter.h"
  49 #include "undo.h"
  50 #include "vspace.h"
  51 #include "WordLangTuple.h"
  52
  53 #include "frontends/FontMetrics.h"
  54 #include "frontends/Painter.h"
  55
  56 #include "insets/insettext.h"
  57 #include "insets/insetbibitem.h"
  58 #include "insets/insethfill.h"
  59 #include "insets/insetlatexaccent.h"
  60 #include "insets/insetline.h"
  61 #include "insets/insetnewline.h"
  62 #include "insets/insetpagebreak.h"
  63 #include "insets/insetoptarg.h"
  64 #include "insets/insetspace.h"
  65 #include "insets/insetspecialchar.h"
  66 #include "insets/insettabular.h"
  67
  68 #include "support/lstrings.h"
  69 #include "support/textutils.h"
  70 #include "support/convert.h"
  71
  72 #include <boost/current_function.hpp>
  73
  74 #include <sstream>
  75
  76
  77 namespace lyx {
  78
  79 using support::bformat;
  80 using support::contains;
  81 using support::lowercase;
  82 using support::split;
  83 using support::uppercase;
  84
  85 using cap::cutSelection;
  86 using cap::pasteParagraphList;
  87
  88 using frontend::FontMetrics;
  89
  90 using std::auto_ptr;
  91 using std::advance;
  92 using std::distance;
  93 using std::max;
  94 using std::min;
  95 using std::endl;
  96 using std::string;
  97
  98
  99 namespace {
 100
 101 int numberOfSeparators(Paragraph const & par, Row const & row)
 102 {
 103         pos_type const first = max(row.pos(), par.beginOfBody());
 104         pos_type const last = row.endpos() - 1;
 105         int n = 0;
 106         for (pos_type p = first; p < last; ++p) {
 107                 if (par.isSeparator(p))
 108                         ++n;
 109         }
 110         return n;
 111 }
 112
 113
 114 int numberOfLabelHfills(Paragraph const & par, Row const & row)
 115 {
 116         pos_type last = row.endpos() - 1;
 117         pos_type first = row.pos();
 118
 119         // hfill *DO* count at the beginning of paragraphs!
 120         if (first) {
 121                 while (first < last && par.isHfill(first))
 122                         ++first;
 123         }
 124
 125         last = min(last, par.beginOfBody());
 126         int n = 0;
 127         for (pos_type p = first; p < last; ++p) {
 128                 if (par.isHfill(p))
 129                         ++n;
 130         }
 131         return n;
 132 }
 133
 134
 135 int numberOfHfills(Paragraph const & par, Row const & row)
 136 {
 137         pos_type const last = row.endpos();
 138         pos_type first = row.pos();
 139
 140         // hfill *DO* count at the beginning of paragraphs!
 141         if (first) {
 142                 while (first < last && par.isHfill(first))
 143                         ++first;
 144         }
 145
 146         first = max(first, par.beginOfBody());
 147
 148         int n = 0;
 149         for (pos_type p = first; p < last; ++p) {
 150                 if (par.isHfill(p))
 151                         ++n;
 152         }
 153         return n;
 154 }
 155
 156
 157 void readParToken(Buffer const & buf, Paragraph & par, LyXLex & lex,
 158         string const & token, LyXFont & font, Change & change, ErrorList & errorList)
 159 {
 160         BufferParams const & bp = buf.params();
 161
 162         if (token[0] != '\\') {
 163 #if 0
 164                 string::const_iterator cit = token.begin();
 165                 for (; cit != token.end(); ++cit)
 166                         par.insertChar(par.size(), (*cit), font, change);
 167 #else
 168                 docstring dstr = lex.getDocString();
 169                 docstring::const_iterator cit = dstr.begin();
 170                 docstring::const_iterator cend = dstr.end();
 171                 for (; cit != cend; ++cit)
 172                         par.insertChar(par.size(), *cit, font, change);
 173 #endif
 174         } else if (token == "\\begin_layout") {
 175                 lex.eatLine();
 176                 string layoutname = lex.getString();
 177
 178                 font = LyXFont(LyXFont::ALL_INHERIT, bp.language);
 179                 change = Change(Change::UNCHANGED);
 180
 181                 LyXTextClass const & tclass = bp.getLyXTextClass();
 182
 183                 if (layoutname.empty()) {
 184                         layoutname = tclass.defaultLayoutName();
 185                 }
 186
 187                 bool hasLayout = tclass.hasLayout(layoutname);
 188
 189                 if (!hasLayout) {
 190                         errorList.push_back(ErrorItem(_("Unknown layout"),
 191                         bformat(_("Layout '%1$s' does not exist in textclass '%2$s'\nTrying to use the default instead.\n"),
 192                         from_utf8(layoutname), from_utf8(tclass.name())), par.id(), 0, par.size()));
 193                         layoutname = tclass.defaultLayoutName();
 194                 }
 195
 196                 par.layout(bp.getLyXTextClass()[layoutname]);
 197
 198                 // Test whether the layout is obsolete.
 199                 LyXLayout_ptr const & layout = par.layout();
 200                 if (!layout->obsoleted_by().empty())
 201                         par.layout(bp.getLyXTextClass()[layout->obsoleted_by()]);
 202
 203                 par.params().read(lex);
 204
 205         } else if (token == "\\end_layout") {
 206                 lyxerr << BOOST_CURRENT_FUNCTION
 207                        << ": Solitary \\end_layout in line "
 208                        << lex.getLineNo() << "\n"
 209                        << "Missing \\begin_layout?.\n";
 210         } else if (token == "\\end_inset") {
 211                 lyxerr << BOOST_CURRENT_FUNCTION
 212                        << ": Solitary \\end_inset in line "
 213                        << lex.getLineNo() << "\n"
 214                        << "Missing \\begin_inset?.\n";
 215         } else if (token == "\\begin_inset") {
 216                 InsetBase * inset = readInset(lex, buf);
 217                 if (inset)
 218                         par.insertInset(par.size(), inset, font, change);
 219                 else {
 220                         lex.eatLine();
 221                         docstring line = from_utf8(lex.getString());
 222                         errorList.push_back(ErrorItem(_("Unknown Inset"), line,
 223                                             par.id(), 0, par.size()));
 224                 }
 225         } else if (token == "\\family") {
 226                 lex.next();
 227                 font.setLyXFamily(lex.getString());
 228         } else if (token == "\\series") {
 229                 lex.next();
 230                 font.setLyXSeries(lex.getString());
 231         } else if (token == "\\shape") {
 232                 lex.next();
 233                 font.setLyXShape(lex.getString());
 234         } else if (token == "\\size") {
 235                 lex.next();
 236                 font.setLyXSize(lex.getString());
 237         } else if (token == "\\lang") {
 238                 lex.next();
 239                 string const tok = lex.getString();
 240                 Language const * lang = languages.getLanguage(tok);
 241                 if (lang) {
 242                         font.setLanguage(lang);
 243                 } else {
 244                         font.setLanguage(bp.language);
 245                         lex.printError("Unknown language `$$Token'");
 246                 }
 247         } else if (token == "\\numeric") {
 248                 lex.next();
 249                 font.setNumber(font.setLyXMisc(lex.getString()));
 250         } else if (token == "\\emph") {
 251                 lex.next();
 252                 font.setEmph(font.setLyXMisc(lex.getString()));
 253         } else if (token == "\\bar") {
 254                 lex.next();
 255                 string const tok = lex.getString();
 256
 257                 if (tok == "under")
 258                         font.setUnderbar(LyXFont::ON);
 259                 else if (tok == "no")
 260                         font.setUnderbar(LyXFont::OFF);
 261                 else if (tok == "default")
 262                         font.setUnderbar(LyXFont::INHERIT);
 263                 else
 264                         lex.printError("Unknown bar font flag "
 265                                        "`$$Token'");
 266         } else if (token == "\\noun") {
 267                 lex.next();
 268                 font.setNoun(font.setLyXMisc(lex.getString()));
 269         } else if (token == "\\color") {
 270                 lex.next();
 271                 font.setLyXColor(lex.getString());
 272         } else if (token == "\\InsetSpace" || token == "\\SpecialChar") {
 273
 274                 // Insets don't make sense in a free-spacing context! ---Kayvan
 275                 if (par.isFreeSpacing()) {
 276                         if (token == "\\InsetSpace")
 277                                 par.insertChar(par.size(), ' ', font, change);
 278                         else if (lex.isOK()) {
 279                                 lex.next();
 280                                 string const next_token = lex.getString();
 281                                 if (next_token == "\\-")
 282                                         par.insertChar(par.size(), '-', font, change);
 283                                 else {
 284                                         lex.printError("Token `$$Token' "
 285                                                        "is in free space "
 286                                                        "paragraph layout!");
 287                                 }
 288                         }
 289                 } else {
 290                         auto_ptr<InsetBase> inset;
 291                         if (token == "\\SpecialChar" )
 292                                 inset.reset(new InsetSpecialChar);
 293                         else
 294                                 inset.reset(new InsetSpace);
 295                         inset->read(buf, lex);
 296                         par.insertInset(par.size(), inset.release(),
 297                                         font, change);
 298                 }
 299         } else if (token == "\\i") {
 300                 auto_ptr<InsetBase> inset(new InsetLatexAccent);
 301                 inset->read(buf, lex);
 302                 par.insertInset(par.size(), inset.release(), font, change);
 303         } else if (token == "\\backslash") {
 304                 par.insertChar(par.size(), '\\', font, change);
 305         } else if (token == "\\newline") {
 306                 auto_ptr<InsetBase> inset(new InsetNewline);
 307                 inset->read(buf, lex);
 308                 par.insertInset(par.size(), inset.release(), font, change);
 309         } else if (token == "\\LyXTable") {
 310                 auto_ptr<InsetBase> inset(new InsetTabular(buf));
 311                 inset->read(buf, lex);
 312                 par.insertInset(par.size(), inset.release(), font, change);
 313         } else if (token == "\\hfill") {
 314                 par.insertInset(par.size(), new InsetHFill, font, change);
 315         } else if (token == "\\lyxline") {
 316                 par.insertInset(par.size(), new InsetLine, font, change);
 317         } else if (token == "\\newpage") {
 318                 par.insertInset(par.size(), new InsetPagebreak, font, change);
 319         } else if (token == "\\change_unchanged") {
 320                 // Hack ! Needed for empty paragraphs :/
 321                 // FIXME: change tracking (MG)
 322                 // set empty 'par' to INSERTED???
 323                 change = Change(Change::UNCHANGED);
 324         } else if (token == "\\change_inserted") {
 325                 lex.eatLine();
 326                 std::istringstream is(lex.getString());
 327                 unsigned int aid;
 328                 time_type ct;
 329                 is >> aid >> ct;
 330                 if (aid >= bp.author_map.size()) {
 331                         errorList.push_back(ErrorItem(_("Change tracking error"),
 332                                             bformat(_("Unknown author index for insertion: %1$d\n"), aid),
 333                                             par.id(), 0, par.size()));
 334                         change = Change(Change::UNCHANGED);
 335                 } else
 336                         change = Change(Change::INSERTED, bp.author_map[aid], ct);
 337         } else if (token == "\\change_deleted") {
 338                 lex.eatLine();
 339                 std::istringstream is(lex.getString());
 340                 unsigned int aid;
 341                 time_type ct;
 342                 is >> aid >> ct;
 343                 if (aid >= bp.author_map.size()) {
 344                         errorList.push_back(ErrorItem(_("Change tracking error"),
 345                                             bformat(_("Unknown author index for deletion: %1$d\n"), aid),
 346                                             par.id(), 0, par.size()));
 347                         change = Change(Change::UNCHANGED);
 348                 } else
 349                         change = Change(Change::DELETED, bp.author_map[aid], ct);
 350         } else {
 351                 lex.eatLine();
 352                 errorList.push_back(ErrorItem(_("Unknown token"),
 353                         bformat(_("Unknown token: %1$s %2$s\n"), from_utf8(token),
 354                         from_utf8(lex.getString())),
 355                         par.id(), 0, par.size()));
 356         }
 357 }
 358
 359
 360 void readParagraph(Buffer const & buf, Paragraph & par, LyXLex & lex,
 361         ErrorList & errorList)
 362 {
 363         lex.nextToken();
 364         string token = lex.getString();
 365         LyXFont font;
 366         Change change(Change::UNCHANGED);
 367
 368         while (lex.isOK()) {
 369                 readParToken(buf, par, lex, token, font, change, errorList);
 370
 371                 lex.nextToken();
 372                 token = lex.getString();
 373
 374                 if (token.empty())
 375                         continue;
 376
 377                 if (token == "\\end_layout") {
 378                         //Ok, paragraph finished
 379                         break;
 380                 }
 381
 382                 lyxerr[Debug::PARSER] << "Handling paragraph token: `"
 383                                       << token << '\'' << endl;
 384                 if (token == "\\begin_layout" || token == "\\end_document"
 385                     || token == "\\end_inset" || token == "\\begin_deeper"
 386                     || token == "\\end_deeper") {
 387                         lex.pushToken(token);
 388                         lyxerr << "Paragraph ended in line "
 389                                << lex.getLineNo() << "\n"
 390                                << "Missing \\end_layout.\n";
 391                         break;
 392                 }
 393         }
 394         // Final change goes to paragraph break:
 395         par.setChange(par.size(), change);
 396
 397         // Initialize begin_of_body_ on load; redoParagraph maintains
 398         par.setBeginOfBody();
 399 }
 400
 401
 402 } // namespace anon
 403
 404
 405
 406 BufferView * LyXText::bv() const
 407 {
 408         BOOST_ASSERT(bv_owner != 0);
 409         return bv_owner;
 410 }
 411
 412
 413 double LyXText::spacing(Paragraph const & par) const
 414 {
 415         if (par.params().spacing().isDefault())
 416                 return bv()->buffer()->params().spacing().getValue();
 417         return par.params().spacing().getValue();
 418 }
 419
 420
 421 int LyXText::width() const
 422 {
 423         return dim_.wid;
 424 }
 425
 426
 427 int LyXText::height() const
 428 {
 429         return dim_.height();
 430 }
 431
 432
 433 int LyXText::singleWidth(Paragraph const & par, pos_type pos) const
 434 {
 435         return singleWidth(par, pos, par.getChar(pos), getFont(par, pos));
 436 }
 437
 438
 439 int LyXText::singleWidth(Paragraph const & par,
 440                          pos_type pos, char_type c, LyXFont const & font) const
 441 {
 442         // The most common case is handled first (Asger)
 443         if (isPrintable(c)) {
 444                 Language const * language = font.language();
 445                 if (language->rightToLeft()) {
 446                         if ((lyxrc.font_norm_type == LyXRC::ISO_8859_6_8 ||
 447                              lyxrc.font_norm_type == LyXRC::ISO_10646_1)
 448                             && language->lang() == "arabic") {
 449                                 if (Encodings::isComposeChar_arabic(c))
 450                                         return 0;
 451                                 c = par.transformChar(c, pos);
 452                         } else if (language->lang() == "hebrew" &&
 453                                    Encodings::isComposeChar_hebrew(c))
 454                                 return 0;
 455                 }
 456                 return theFontMetrics(font).width(c);
 457         }
 458
 459         if (c == Paragraph::META_INSET)
 460                 return par.getInset(pos)->width();
 461
 462         return theFontMetrics(font).width(c);
 463 }
 464
 465
 466 int LyXText::leftMargin(pit_type pit) const
 467 {
 468         BOOST_ASSERT(pit >= 0);
 469         BOOST_ASSERT(pit < int(pars_.size()));
 470         return leftMargin(pit, pars_[pit].size());
 471 }
 472
 473
 474 int LyXText::leftMargin(pit_type const pit, pos_type const pos) const
 475 {
 476         BOOST_ASSERT(pit >= 0);
 477         BOOST_ASSERT(pit < int(pars_.size()));
 478         Paragraph const & par = pars_[pit];
 479         BOOST_ASSERT(pos >= 0);
 480         BOOST_ASSERT(pos <= par.size());
 481         //lyxerr << "LyXText::leftMargin: pit: " << pit << " pos: " << pos << endl;
 482         BufferParams const & params = bv()->buffer()->params();
 483         LyXTextClass const & tclass = params.getLyXTextClass();
 484         LyXLayout_ptr const & layout = par.layout();
 485
 486         string parindent = layout->parindent;
 487
 488         int l_margin = 0;
 489
 490         if (isMainText())
 491                 l_margin += changebarMargin();
 492
 493         // FIXME UNICODE
 494         docstring leftm = from_utf8(tclass.leftmargin());
 495         l_margin += theFontMetrics(params.getFont()).signedWidth(leftm);
 496
 497         if (par.getDepth() != 0) {
 498                 // find the next level paragraph
 499                 pit_type newpar = outerHook(pit, pars_);
 500                 if (newpar != pit_type(pars_.size())) {
 501                         if (pars_[newpar].layout()->isEnvironment()) {
 502                                 l_margin = leftMargin(newpar);
 503                         }
 504                         if (par.layout() == tclass.defaultLayout()) {
 505                                 if (pars_[newpar].params().noindent())
 506                                         parindent.erase();
 507                                 else
 508                                         parindent = pars_[newpar].layout()->parindent;
 509                         }
 510                 }
 511         }
 512
 513         // This happens after sections in standard classes. The 1.3.x
 514         // code compared depths too, but it does not seem necessary
 515         // (JMarc)
 516         if (par.layout() == tclass.defaultLayout()
 517             && pit > 0 && pars_[pit - 1].layout()->nextnoindent)
 518                 parindent.erase();
 519
 520         LyXFont const labelfont = getLabelFont(par);
 521         FontMetrics const & labelfont_metrics = theFontMetrics(labelfont);
 522
 523         switch (layout->margintype) {
 524         case MARGIN_DYNAMIC:
 525                 if (!layout->leftmargin.empty()) {
 526                         // FIXME UNICODE
 527                         docstring leftm = from_utf8(layout->leftmargin);
 528                         l_margin += theFontMetrics(params.getFont()).signedWidth(leftm);
 529                 }
 530                 if (!par.getLabelstring().empty()) {
 531                         // FIXME UNICODE
 532                         docstring labin = from_utf8(layout->labelindent);
 533                         l_margin += labelfont_metrics.signedWidth(labin);
 534                         docstring labstr = par.getLabelstring();
 535                         l_margin += labelfont_metrics.width(labstr);
 536                         docstring labsep = from_utf8(layout->labelsep);
 537                         l_margin += labelfont_metrics.width(labsep);
 538                 }
 539                 break;
 540
 541         case MARGIN_MANUAL: {
 542                 // FIXME UNICODE
 543                 docstring labin = from_utf8(layout->labelindent);
 544                 l_margin += labelfont_metrics.signedWidth(labin);
 545                 // The width of an empty par, even with manual label, should be 0
 546                 if (!par.empty() && pos >= par.beginOfBody()) {
 547                         if (!par.getLabelWidthString().empty()) {
 548                                 docstring labstr = par.getLabelWidthString();
 549                                 l_margin += labelfont_metrics.width(labstr);
 550                                 docstring labsep = from_utf8(layout->labelsep);
 551                                 l_margin += labelfont_metrics.width(labsep);
 552                         }
 553                 }
 554                 break;
 555         }
 556
 557         case MARGIN_STATIC: {
 558                 // FIXME UNICODE
 559                 docstring leftm = from_utf8(layout->leftmargin);
 560                 l_margin += theFontMetrics(params.getFont()).signedWidth(leftm)
 561                         * 4     / (par.getDepth() + 4);
 562                 break;
 563         }
 564
 565         case MARGIN_FIRST_DYNAMIC:
 566                 if (layout->labeltype == LABEL_MANUAL) {
 567                         if (pos >= par.beginOfBody()) {
 568                                 // FIXME UNICODE
 569                                 l_margin += labelfont_metrics.signedWidth(
 570                                         from_utf8(layout->leftmargin));
 571                         } else {
 572                                 // FIXME UNICODE
 573                                 l_margin += labelfont_metrics.signedWidth(
 574                                         from_utf8(layout->labelindent));
 575                         }
 576                 } else if (pos != 0
 577                            // Special case to fix problems with
 578                            // theorems (JMarc)
 579                            || (layout->labeltype == LABEL_STATIC
 580                                && layout->latextype == LATEX_ENVIRONMENT
 581                                && !isFirstInSequence(pit, pars_))) {
 582                         // FIXME UNICODE
 583                         l_margin += labelfont_metrics.signedWidth(from_utf8(layout->leftmargin));
 584                 } else if (layout->labeltype != LABEL_TOP_ENVIRONMENT
 585                            && layout->labeltype != LABEL_BIBLIO
 586                            && layout->labeltype !=
 587                            LABEL_CENTERED_TOP_ENVIRONMENT) {
 588                         l_margin += labelfont_metrics.signedWidth(from_utf8(layout->labelindent));
 589                         l_margin += labelfont_metrics.width(from_utf8(layout->labelsep));
 590                         l_margin += labelfont_metrics.width(par.getLabelstring());
 591                 }
 592                 break;
 593
 594         case MARGIN_RIGHT_ADDRESS_BOX: {
 595 #if 0
 596                 // ok, a terrible hack. The left margin depends on the widest
 597                 // row in this paragraph.
 598                 RowList::iterator rit = par.rows().begin();
 599                 RowList::iterator end = par.rows().end();
 600 #ifdef WITH_WARNINGS
 601 #warning This is wrong.
 602 #endif
 603                 int minfill = maxwidth_;
 604                 for ( ; rit != end; ++rit)
 605                         if (rit->fill() < minfill)
 606                                 minfill = rit->fill();
 607                 l_margin += theFontMetrics(params.getFont()).signedWidth(layout->leftmargin);
 608                 l_margin += minfill;
 609 #endif
 610                 // also wrong, but much shorter.
 611                 l_margin += maxwidth_ / 2;
 612                 break;
 613         }
 614         }
 615
 616         if (!par.params().leftIndent().zero())
 617                 l_margin += par.params().leftIndent().inPixels(maxwidth_);
 618
 619         LyXAlignment align;
 620
 621         if (par.params().align() == LYX_ALIGN_LAYOUT)
 622                 align = layout->align;
 623         else
 624                 align = par.params().align();
 625
 626         // set the correct parindent
 627         if (pos == 0
 628             && (layout->labeltype == LABEL_NO_LABEL
 629                || layout->labeltype == LABEL_TOP_ENVIRONMENT
 630                || layout->labeltype == LABEL_CENTERED_TOP_ENVIRONMENT
 631                || (layout->labeltype == LABEL_STATIC
 632                    && layout->latextype == LATEX_ENVIRONMENT
 633                    && !isFirstInSequence(pit, pars_)))
 634             && align == LYX_ALIGN_BLOCK
 635             && !par.params().noindent()
 636             // in some insets, paragraphs are never indented
 637             && !(par.inInset() && par.inInset()->neverIndent())
 638             // display style insets are always centered, omit indentation
 639             && !(!par.empty()
 640                     && par.isInset(pos)
 641                     && par.getInset(pos)->display())
 642             && (par.layout() != tclass.defaultLayout()
 643                 || bv()->buffer()->params().paragraph_separation ==
 644                    BufferParams::PARSEP_INDENT))
 645         {
 646                 docstring din = from_utf8(parindent);
 647                 l_margin += theFontMetrics(params.getFont()).signedWidth(din);
 648         }
 649
 650         return l_margin;
 651 }
 652
 653
 654 int LyXText::rightMargin(Paragraph const & par) const
 655 {
 656         // FIXME: the correct way is to only call rightMargin() only
 657         // within the main LyXText. The following test is thus bogus.
 658         LyXText const & text = bv()->buffer()->text();
 659         // We do not want rightmargins on inner texts.
 660         if (&text != this)
 661                 return 0;
 662
 663         BufferParams const & params = bv()->buffer()->params();
 664         LyXTextClass const & tclass = params.getLyXTextClass();
 665         docstring trmarg = from_utf8(tclass.rightmargin());
 666         docstring lrmarg = from_utf8(par.layout()->rightmargin);
 667         FontMetrics const & fm = theFontMetrics(params.getFont());
 668         int const r_margin =
 669                 lyx::rightMargin()
 670                 + fm.signedWidth(trmarg)
 671                 + fm.signedWidth(lrmarg)
 672                 * 4 / (par.getDepth() + 4);
 673
 674         return r_margin;
 675 }
 676
 677
 678 int LyXText::labelEnd(pit_type const 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(pit_type const pit, Row & row) const
 706 {
 707         Paragraph const & par = pars_[pit];
 708         pos_type const end = par.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(par); // - leftMargin(pit, row);
 717         if (width < 0) {
 718                 row.endpos(end);
 719                 return;
 720         }
 721
 722         LyXLayout_ptr const & layout = par.layout();
 723
 724         if (layout->margintype == MARGIN_RIGHT_ADDRESS_BOX) {
 725                 row.endpos(addressBreakPoint(pos, par));
 726                 return;
 727         }
 728
 729         pos_type const body_pos = par.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, par, pos);
 743         pos_type point = end;
 744         pos_type i = pos;
 745         FontMetrics const & fm = theFontMetrics(getLabelFont(par));
 746         for ( ; i < end; ++i, ++fi) {
 747                 char_type const c = par.getChar(i);
 748                 int thiswidth = singleWidth(par, i, c, *fi);
 749
 750                 // add the auto-hfill from label end to the body
 751                 if (body_pos && i == body_pos) {
 752                         docstring lsep = from_utf8(layout->labelsep);
 753                         int add = fm.width(lsep);
 754                         if (par.isLineSeparator(i - 1))
 755                                 add -= singleWidth(par, i - 1);
 756
 757                         add = std::max(add, labelEnd(pit) - x);
 758                         thiswidth += add;
 759                 }
 760
 761                 x += thiswidth;
 762                 chunkwidth += thiswidth;
 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 (par.isNewline(i)) {
 780                         point = i + 1;
 781                         break;
 782                 }
 783                 // Break before...
 784                 if (i + 1 < end) {
 785                         if (par.isInset(i + 1) && par.getInset(i + 1)->display()) {
 786                                 point = i + 1;
 787                                 break;
 788                         }
 789                         // ...and after.
 790                         if (par.isInset(i) && par.getInset(i)->display()) {
 791                                 point = i + 1;
 792                                 break;
 793                         }
 794                 }
 795
 796                 if (!par.isInset(i) || par.getInset(i)->isChar()) {
 797                         // some insets are line separators too
 798                         if (par.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(pit_type const pit, Row & row) const
 821 {
 822         // get the pure distance
 823         pos_type const end = row.endpos();
 824
 825         Paragraph const & par = pars_[pit];
 826         docstring const labelsep = from_utf8(par.layout()->labelsep);
 827         int w = leftMargin(pit, row.pos());
 828
 829         pos_type const body_pos = par.beginOfBody();
 830         pos_type i = row.pos();
 831
 832         FontMetrics const & fm = theFontMetrics(getLabelFont(par));
 833
 834         if (i < end) {
 835                 FontIterator fi = FontIterator(*this, par, i);
 836                 for ( ; i < end; ++i, ++fi) {
 837                         if (body_pos > 0 && i == body_pos) {
 838                                 w += fm.width(labelsep);
 839                                 if (par.isLineSeparator(i - 1))
 840                                         w -= singleWidth(par, i - 1);
 841                                 w = max(w, labelEnd(pit));
 842                         }
 843                         char_type const c = par.getChar(i);
 844                         w += singleWidth(par, i, c, *fi);
 845                 }
 846         }
 847
 848         if (body_pos > 0 && body_pos >= end) {
 849                 w += fm.width(labelsep);
 850                 if (end > 0 && par.isLineSeparator(end - 1))
 851                         w -= singleWidth(par, end - 1);
 852                 w = max(w, labelEnd(pit));
 853         }
 854
 855         row.width(w + rightMargin(par));
 856 }
 857
 858
 859 // returns the minimum space a manual label needs on the screen in pixel
 860 int LyXText::labelFill(Paragraph const & par, Row const & row) const
 861 {
 862         pos_type last = par.beginOfBody();
 863
 864         BOOST_ASSERT(last > 0);
 865
 866         // -1 because a label ends with a space that is in the label
 867         --last;
 868
 869         // a separator at this end does not count
 870         if (par.isLineSeparator(last))
 871                 --last;
 872
 873         int w = 0;
 874         for (pos_type i = row.pos(); i <= last; ++i)
 875                 w += singleWidth(par, i);
 876
 877         docstring const & label = par.params().labelWidthString();
 878         if (label.empty())
 879                 return 0;
 880
 881         FontMetrics const & fm = theFontMetrics(getLabelFont(par));
 882
 883         return max(0, fm.width(label) - w);
 884 }
 885
 886
 887 LColor_color LyXText::backgroundColor() const
 888 {
 889         return LColor_color(LColor::color(background_color_));
 890 }
 891
 892
 893 void LyXText::setHeightOfRow(pit_type const pit, Row & row)
 894 {
 895         Paragraph const & par = pars_[pit];
 896         // get the maximum ascent and the maximum descent
 897         double layoutasc = 0;
 898         double layoutdesc = 0;
 899         double const dh = defaultRowHeight();
 900
 901         // ok, let us initialize the maxasc and maxdesc value.
 902         // Only the fontsize count. The other properties
 903         // are taken from the layoutfont. Nicer on the screen :)
 904         LyXLayout_ptr const & layout = par.layout();
 905
 906         // as max get the first character of this row then it can
 907         // increase but not decrease the height. Just some point to
 908         // start with so we don't have to do the assignment below too
 909         // often.
 910         LyXFont font = getFont(par, row.pos());
 911         LyXFont::FONT_SIZE const tmpsize = font.size();
 912         font = getLayoutFont(pit);
 913         LyXFont::FONT_SIZE const size = font.size();
 914         font.setSize(tmpsize);
 915
 916         LyXFont labelfont = getLabelFont(par);
 917
 918         FontMetrics const & labelfont_metrics = theFontMetrics(labelfont);
 919         FontMetrics const & fontmetrics = theFontMetrics(font);
 920
 921         // these are minimum values
 922         double const spacing_val = layout->spacing.getValue() * spacing(par);
 923         //lyxerr << "spacing_val = " << spacing_val << endl;
 924         int maxasc  = int(fontmetrics.maxAscent()  * spacing_val);
 925         int maxdesc = int(fontmetrics.maxDescent() * spacing_val);
 926
 927         // insets may be taller
 928         InsetList::const_iterator ii = par.insetlist.begin();
 929         InsetList::const_iterator iend = par.insetlist.end();
 930         for ( ; ii != iend; ++ii) {
 931                 if (ii->pos >= row.pos() && ii->pos < row.endpos()) {
 932                         maxasc  = max(maxasc,  ii->inset->ascent());
 933                         maxdesc = max(maxdesc, ii->inset->descent());
 934                 }
 935         }
 936
 937         // Check if any custom fonts are larger (Asger)
 938         // This is not completely correct, but we can live with the small,
 939         // cosmetic error for now.
 940         int labeladdon = 0;
 941         pos_type const pos_end = row.endpos();
 942
 943         LyXFont::FONT_SIZE maxsize =
 944                 par.highestFontInRange(row.pos(), pos_end, size);
 945         if (maxsize > font.size()) {
 946                 font.setSize(maxsize);
 947                 maxasc  = max(maxasc,  fontmetrics.maxAscent());
 948                 maxdesc = max(maxdesc, fontmetrics.maxDescent());
 949         }
 950
 951         // This is nicer with box insets:
 952         ++maxasc;
 953         ++maxdesc;
 954
 955         row.ascent(maxasc);
 956
 957         // is it a top line?
 958         if (row.pos() == 0) {
 959                 BufferParams const & bufparams = bv()->buffer()->params();
 960                 // some parksips VERY EASY IMPLEMENTATION
 961                 if (bv()->buffer()->params().paragraph_separation
 962                     == BufferParams::PARSEP_SKIP
 963                         && pit != 0
 964                         && ((layout->isParagraph() && par.getDepth() == 0)
 965                             || (pars_[pit - 1].layout()->isParagraph()
 966                                 && pars_[pit - 1].getDepth() == 0)))
 967                 {
 968                                 maxasc += bufparams.getDefSkip().inPixels(*bv());
 969                 }
 970
 971                 if (par.params().startOfAppendix())
 972                         maxasc += int(3 * dh);
 973
 974                 // This is special code for the chapter, since the label of this
 975                 // layout is printed in an extra row
 976                 if (layout->counter == "chapter"
 977                     && !par.params().labelString().empty()) {
 978                         labeladdon = int(labelfont_metrics.maxHeight()
 979                                      * layout->spacing.getValue()
 980                                      * spacing(par));
 981                 }
 982
 983                 // special code for the top label
 984                 if ((layout->labeltype == LABEL_TOP_ENVIRONMENT
 985                      || layout->labeltype == LABEL_BIBLIO
 986                      || layout->labeltype == LABEL_CENTERED_TOP_ENVIRONMENT)
 987                     && isFirstInSequence(pit, paragraphs())
 988                     && !par.getLabelstring().empty())
 989                 {
 990                         labeladdon = int(
 991                                   labelfont_metrics.maxHeight()
 992                                         * layout->spacing.getValue()
 993                                         * spacing(par)
 994                                 + (layout->topsep + layout->labelbottomsep) * dh);
 995                 }
 996
 997                 // Add the layout spaces, for example before and after
 998                 // a section, or between the items of a itemize or enumerate
 999                 // environment.
1000
1001                 pit_type prev = depthHook(pit, pars_, par.getDepth());
1002                 if (prev != pit
1003                     && pars_[prev].layout() == layout
1004                     && pars_[prev].getDepth() == par.getDepth()
1005                     && pars_[prev].getLabelWidthString() == par.getLabelWidthString())
1006                 {
1007                         layoutasc = layout->itemsep * dh;
1008                 } else if (pit != 0 || row.pos() != 0) {
1009                         if (layout->topsep > 0)
1010                                 layoutasc = layout->topsep * dh;
1011                 }
1012
1013                 prev = outerHook(pit, pars_);
1014                 if (prev != pit_type(pars_.size())) {
1015                         maxasc += int(pars_[prev].layout()->parsep * dh);
1016                 } else if (pit != 0) {
1017                         if (pars_[pit - 1].getDepth() != 0 ||
1018                                         pars_[pit - 1].layout() == layout) {
1019                                 maxasc += int(layout->parsep * dh);
1020                         }
1021                 }
1022         }
1023
1024         // is it a bottom line?
1025         if (row.endpos() >= par.size()) {
1026                 // add the layout spaces, for example before and after
1027                 // a section, or between the items of a itemize or enumerate
1028                 // environment
1029                 pit_type nextpit = pit + 1;
1030                 if (nextpit != pit_type(pars_.size())) {
1031                         pit_type cpit = pit;
1032                         double usual = 0;
1033                         double unusual = 0;
1034
1035                         if (pars_[cpit].getDepth() > pars_[nextpit].getDepth()) {
1036                                 usual = pars_[cpit].layout()->bottomsep * dh;
1037                                 cpit = depthHook(cpit, paragraphs(), pars_[nextpit].getDepth());
1038                                 if (pars_[cpit].layout() != pars_[nextpit].layout()
1039                                         || pars_[nextpit].getLabelWidthString() != pars_[cpit].getLabelWidthString())
1040                                 {
1041                                         unusual = pars_[cpit].layout()->bottomsep * dh;
1042                                 }
1043                                 layoutdesc = max(unusual, usual);
1044                         } else if (pars_[cpit].getDepth() == pars_[nextpit].getDepth()) {
1045                                 if (pars_[cpit].layout() != pars_[nextpit].layout()
1046                                         || pars_[nextpit].getLabelWidthString() != pars_[cpit].getLabelWidthString())
1047                                         layoutdesc = int(pars_[cpit].layout()->bottomsep * dh);
1048                         }
1049                 }
1050         }
1051
1052         // incalculate the layout spaces
1053         maxasc  += int(layoutasc  * 2 / (2 + pars_[pit].getDepth()));
1054         maxdesc += int(layoutdesc * 2 / (2 + pars_[pit].getDepth()));
1055
1056         // FIXME: the correct way is to do the following is to move the
1057         // following code in another method specially tailored for the
1058         // main LyXText. The following test is thus bogus.
1059         LyXText const & text = bv_owner->buffer()->text();
1060         // Top and bottom margin of the document (only at top-level)
1061         if (&text == this) {
1062                 if (pit == 0 && row.pos() == 0)
1063                         maxasc += 20;
1064                 if (pit + 1 == pit_type(pars_.size()) &&
1065                     row.endpos() == par.size())
1066                         maxdesc += 20;
1067         }
1068
1069         row.ascent(maxasc + labeladdon);
1070         row.descent(maxdesc);
1071 }
1072
1073
1074 namespace {
1075
1076 }
1077
1078 void LyXText::breakParagraph(LCursor & cur, bool keep_layout)
1079 {
1080         BOOST_ASSERT(this == cur.text());
1081
1082         Paragraph & cpar = cur.paragraph();
1083         pit_type cpit = cur.pit();
1084
1085         LyXTextClass const & tclass = cur.buffer().params().getLyXTextClass();
1086         LyXLayout_ptr const & layout = cpar.layout();
1087
1088         // this is only allowed, if the current paragraph is not empty
1089         // or caption and if it has not the keepempty flag active
1090         if (cur.lastpos() == 0 && !cpar.allowEmpty()
1091            && layout->labeltype != LABEL_SENSITIVE)
1092                 return;
1093
1094         // a layout change may affect also the following paragraph
1095         recUndo(cur.pit(), undoSpan(cur.pit()) - 1);
1096
1097         // Always break behind a space
1098         // It is better to erase the space (Dekel)
1099         if (cur.pos() != cur.lastpos() && cpar.isLineSeparator(cur.pos()))
1100                 // FIXME: change tracking (MG)
1101                 cpar.eraseChar(cur.pos(), cur.buffer().params().trackChanges);
1102
1103         // How should the layout for the new paragraph be?
1104         int preserve_layout = 0;
1105         if (keep_layout)
1106                 preserve_layout = 2;
1107         else
1108                 preserve_layout = layout->isEnvironment();
1109
1110         // We need to remember this before we break the paragraph, because
1111         // that invalidates the layout variable
1112         bool sensitive = layout->labeltype == LABEL_SENSITIVE;
1113
1114         // we need to set this before we insert the paragraph.
1115         bool const isempty = cpar.allowEmpty() && cpar.empty();
1116
1117         lyx::breakParagraph(cur.buffer().params(), paragraphs(), cpit,
1118                          cur.pos(), preserve_layout);
1119
1120         // After this, neither paragraph contains any rows!
1121
1122         cpit = cur.pit();
1123         pit_type next_par = cpit + 1;
1124
1125         // well this is the caption hack since one caption is really enough
1126         if (sensitive) {
1127                 if (cur.pos() == 0)
1128                         // set to standard-layout
1129                         pars_[cpit].applyLayout(tclass.defaultLayout());
1130                 else
1131                         // set to standard-layout
1132                         pars_[next_par].applyLayout(tclass.defaultLayout());
1133         }
1134
1135         while (!pars_[next_par].empty() && pars_[next_par].isNewline(0))
1136                 // FIXME: change tracking (MG)
1137                 pars_[next_par].eraseChar(0, cur.buffer().params().trackChanges);
1138
1139         ParIterator current_it(cur);
1140         ParIterator last_it(cur);
1141         ++last_it;
1142         ++last_it;
1143
1144         updateLabels(cur.buffer(), current_it, last_it);
1145
1146         // Mark "carriage return" as inserted if change tracking:
1147         if (cur.buffer().params().trackChanges) {
1148                 // FIXME: Change tracking (MG)
1149                 cur.paragraph().setChange(cur.paragraph().size(),
1150                         Change(Change::INSERTED));
1151         }
1152
1153         // This check is necessary. Otherwise the new empty paragraph will
1154         // be deleted automatically. And it is more friendly for the user!
1155         if (cur.pos() != 0 || isempty)
1156                 setCursor(cur, cur.pit() + 1, 0);
1157         else
1158                 setCursor(cur, cur.pit(), 0);
1159 }
1160
1161
1162 // insert a character, moves all the following breaks in the
1163 // same Paragraph one to the right and make a rebreak
1164 void LyXText::insertChar(LCursor & cur, char_type c)
1165 {
1166         BOOST_ASSERT(this == cur.text());
1167         BOOST_ASSERT(c != Paragraph::META_INSET);
1168
1169         recordUndo(cur, Undo::INSERT);
1170
1171         Paragraph & par = cur.paragraph();
1172         // try to remove this
1173         pit_type const pit = cur.pit();
1174
1175         bool const freeSpacing = par.layout()->free_spacing ||
1176                 par.isFreeSpacing();
1177
1178         if (lyxrc.auto_number) {
1179                 static docstring const number_operators = from_ascii("+-/*");
1180                 static docstring const number_unary_operators = from_ascii("+-");
1181                 static docstring const number_seperators = from_ascii(".,:");
1182
1183                 if (current_font.number() == LyXFont::ON) {
1184                         if (!isDigit(c) && !contains(number_operators, c) &&
1185                             !(contains(number_seperators, c) &&
1186                               cur.pos() != 0 &&
1187                               cur.pos() != cur.lastpos() &&
1188                               getFont(par, cur.pos()).number() == LyXFont::ON &&
1189                               getFont(par, cur.pos() - 1).number() == LyXFont::ON)
1190                            )
1191                                 number(cur); // Set current_font.number to OFF
1192                 } else if (isDigit(c) &&
1193                            real_current_font.isVisibleRightToLeft()) {
1194                         number(cur); // Set current_font.number to ON
1195
1196                         if (cur.pos() != 0) {
1197                                 char_type const c = par.getChar(cur.pos() - 1);
1198                                 if (contains(number_unary_operators, c) &&
1199                                     (cur.pos() == 1
1200                                      || par.isSeparator(cur.pos() - 2)
1201                                      || par.isNewline(cur.pos() - 2))
1202                                   ) {
1203                                         setCharFont(pit, cur.pos() - 1, current_font);
1204                                 } else if (contains(number_seperators, c)
1205                                      && cur.pos() >= 2
1206                                      && getFont(par, cur.pos() - 2).number() == LyXFont::ON) {
1207                                         setCharFont(pit, cur.pos() - 1, current_font);
1208                                 }
1209                         }
1210                 }
1211         }
1212
1213         // First check, if there will be two blanks together or a blank at
1214         // the beginning of a paragraph.
1215         // I decided to handle blanks like normal characters, the main
1216         // difference are the special checks when calculating the row.fill
1217         // (blank does not count at the end of a row) and the check here
1218
1219         // When the free-spacing option is set for the current layout,
1220         // disable the double-space checking
1221         if (!freeSpacing && isLineSeparatorChar(c)) {
1222                 if (cur.pos() == 0) {
1223                         static bool sent_space_message = false;
1224                         if (!sent_space_message) {
1225                                 cur.message(_("You cannot insert a space at the "
1226                                                            "beginning of a paragraph. Please read the Tutorial."));
1227                                 sent_space_message = true;
1228                         }
1229                         return;
1230                 }
1231                 BOOST_ASSERT(cur.pos() > 0);
1232                 if ((par.isLineSeparator(cur.pos() - 1) || par.isNewline(cur.pos() - 1))
1233                     && !par.isDeleted(cur.pos() - 1)) {
1234                         static bool sent_space_message = false;
1235                         if (!sent_space_message) {
1236                                 cur.message(_("You cannot type two spaces this way. "
1237                                                            "Please read the Tutorial."));
1238                                 sent_space_message = true;
1239                         }
1240                         return;
1241                 }
1242         }
1243
1244         par.insertChar(cur.pos(), c, current_font, cur.buffer().params().trackChanges);
1245         setCursor(cur, cur.pit(), cur.pos() + 1, false, cur.boundary());
1246         charInserted();
1247 }
1248
1249
1250 void LyXText::charInserted()
1251 {
1252         // Here we call finishUndo for every 20 characters inserted.
1253         // This is from my experience how emacs does it. (Lgb)
1254         static unsigned int counter;
1255         if (counter < 20) {
1256                 ++counter;
1257         } else {
1258                 finishUndo();
1259                 counter = 0;
1260         }
1261 }
1262
1263
1264 RowMetrics
1265 LyXText::computeRowMetrics(pit_type const pit, Row const & row) const
1266 {
1267         RowMetrics result;
1268         Paragraph const & par = pars_[pit];
1269
1270         double w = dim_.wid - row.width();
1271
1272         bool const is_rtl = isRTL(par);
1273         if (is_rtl)
1274                 result.x = rightMargin(par);
1275         else
1276                 result.x = leftMargin(pit, row.pos());
1277
1278         // is there a manual margin with a manual label
1279         LyXLayout_ptr const & layout = par.layout();
1280
1281         if (layout->margintype == MARGIN_MANUAL
1282             && layout->labeltype == LABEL_MANUAL) {
1283                 /// We might have real hfills in the label part
1284                 int nlh = numberOfLabelHfills(par, row);
1285
1286                 // A manual label par (e.g. List) has an auto-hfill
1287                 // between the label text and the body of the
1288                 // paragraph too.
1289                 // But we don't want to do this auto hfill if the par
1290                 // is empty.
1291                 if (!par.empty())
1292                         ++nlh;
1293
1294                 if (nlh && !par.getLabelWidthString().empty())
1295                         result.label_hfill = labelFill(par, row) / double(nlh);
1296         }
1297
1298         // are there any hfills in the row?
1299         int const nh = numberOfHfills(par, row);
1300
1301         if (nh) {
1302                 if (w > 0)
1303                         result.hfill = w / nh;
1304         // we don't have to look at the alignment if it is ALIGN_LEFT and
1305         // if the row is already larger then the permitted width as then
1306         // we force the LEFT_ALIGN'edness!
1307         } else if (int(row.width()) < maxwidth_) {
1308                 // is it block, flushleft or flushright?
1309                 // set x how you need it
1310                 int align;
1311                 if (par.params().align() == LYX_ALIGN_LAYOUT)
1312                         align = layout->align;
1313                 else
1314                         align = par.params().align();
1315
1316                 // Display-style insets should always be on a centred row
1317                 // The test on par.size() is to catch zero-size pars, which
1318                 // would trigger the assert in Paragraph::getInset().
1319                 //inset = par.size() ? par.getInset(row.pos()) : 0;
1320                 if (!par.empty()
1321                     && par.isInset(row.pos())
1322                     && par.getInset(row.pos())->display())
1323                 {
1324                         align = LYX_ALIGN_CENTER;
1325                 }
1326
1327                 switch (align) {
1328                 case LYX_ALIGN_BLOCK: {
1329                         int const ns = numberOfSeparators(par, row);
1330                         bool disp_inset = false;
1331                         if (row.endpos() < par.size()) {
1332                                 InsetBase const * in = par.getInset(row.endpos());
1333                                 if (in)
1334                                         disp_inset = in->display();
1335                         }
1336                         // If we have separators, this is not the last row of a
1337                         // par, does not end in newline, and is not row above a
1338                         // display inset... then stretch it
1339                         if (ns
1340                             && row.endpos() < par.size()
1341                             && !par.isNewline(row.endpos() - 1)
1342                             && !disp_inset
1343                                 ) {
1344                                 result.separator = w / ns;
1345                         } else if (is_rtl) {
1346                                 result.x += w;
1347                         }
1348                         break;
1349                 }
1350                 case LYX_ALIGN_RIGHT:
1351                         result.x += w;
1352                         break;
1353                 case LYX_ALIGN_CENTER:
1354                         result.x += w / 2;
1355                         break;
1356                 }
1357         }
1358
1359         bidi.computeTables(par, *bv()->buffer(), row);
1360         if (is_rtl) {
1361                 pos_type body_pos = par.beginOfBody();
1362                 pos_type end = row.endpos();
1363
1364                 if (body_pos > 0
1365                     && (body_pos > end || !par.isLineSeparator(body_pos - 1)))
1366                 {
1367                         docstring const lsep = from_utf8(layout->labelsep);
1368                         result.x += theFontMetrics(getLabelFont(par)).width(lsep);
1369                         if (body_pos <= end)
1370                                 result.x += result.label_hfill;
1371                 }
1372         }
1373
1374         return result;
1375 }
1376
1377
1378 // the cursor set functions have a special mechanism. When they
1379 // realize, that you left an empty paragraph, they will delete it.
1380
1381 bool LyXText::cursorRightOneWord(LCursor & cur)
1382 {
1383         BOOST_ASSERT(this == cur.text());
1384
1385         LCursor old = cur;
1386
1387         if (old.pos() == old.lastpos() && old.pit() != old.lastpit()) {
1388                 ++old.pit();
1389                 old.pos() = 0;
1390         } else {
1391                 // Advance through word.
1392                 while (old.pos() != old.lastpos() && old.paragraph().isLetter(old.pos()))
1393                         ++old.pos();
1394                 // Skip through trailing nonword stuff.
1395                 while (old.pos() != old.lastpos() && !old.paragraph().isLetter(old.pos()))
1396                         ++old.pos();
1397         }
1398         return setCursor(cur, old.pit(), old.pos());
1399 }
1400
1401
1402 bool LyXText::cursorLeftOneWord(LCursor & cur)
1403 {
1404         BOOST_ASSERT(this == cur.text());
1405
1406         LCursor old = cur;
1407
1408         if (old.pos() == 0 && old.pit() != 0) {
1409                 --old.pit();
1410                 old.pos() = old.lastpos();
1411         } else {
1412                 // Skip through initial nonword stuff.
1413                 while (old.pos() != 0 && !old.paragraph().isLetter(old.pos() - 1))
1414                         --old.pos();
1415                 // Advance through word.
1416                 while (old.pos() != 0 && old.paragraph().isLetter(old.pos() - 1))
1417                         --old.pos();
1418         }
1419         return setCursor(cur, old.pit(), old.pos());
1420 }
1421
1422
1423 void LyXText::selectWord(LCursor & cur, word_location loc)
1424 {
1425         BOOST_ASSERT(this == cur.text());
1426         CursorSlice from = cur.top();
1427         CursorSlice to = cur.top();
1428         getWord(from, to, loc);
1429         if (cur.top() != from)
1430                 setCursor(cur, from.pit(), from.pos());
1431         if (to == from)
1432                 return;
1433         cur.resetAnchor();
1434         setCursor(cur, to.pit(), to.pos());
1435         cur.setSelection();
1436 }
1437
1438
1439 // Select the word currently under the cursor when no
1440 // selection is currently set
1441 bool LyXText::selectWordWhenUnderCursor(LCursor & cur, word_location loc)
1442 {
1443         BOOST_ASSERT(this == cur.text());
1444         if (cur.selection())
1445                 return false;
1446         selectWord(cur, loc);
1447         return cur.selection();
1448 }
1449
1450
1451 void LyXText::acceptChange(LCursor & cur)
1452 {
1453         BOOST_ASSERT(this == cur.text());
1454         if (!cur.selection() && cur.lastpos() != 0)
1455                 return;
1456
1457         recordUndoSelection(cur, Undo::INSERT);
1458
1459         DocIterator it = cur.selectionBegin();
1460         DocIterator et = cur.selectionEnd();
1461         pit_type pit = it.pit();
1462         bool isDeleted = pars_[pit].isDeleted(it.pos());
1463         for (; pit <= et.pit(); ++pit) {
1464                 pos_type left  = ( pit == it.pit() ? it.pos() : 0 );
1465                 pos_type right =
1466                     ( pit == et.pit() ? et.pos() : pars_[pit].size() + 1 );
1467                 pars_[pit].acceptChanges(left, right);
1468         }
1469         if (isDeleted) {
1470                 ParagraphList & plist = paragraphs();
1471                 if (it.pit() + 1 < et.pit())
1472                         pars_.erase(boost::next(plist.begin(), it.pit() + 1),
1473                                     boost::next(plist.begin(), et.pit()));
1474
1475                 // Paragraph merge if appropriate:
1476                 // FIXME: change tracking (MG)
1477                 if (pars_[it.pit()].isDeleted(pars_[it.pit()].size())) {
1478                         setCursorIntern(cur, it.pit() + 1, 0);
1479                         backspacePos0(cur);
1480                 }
1481         }
1482         finishUndo();
1483         cur.clearSelection();
1484         setCursorIntern(cur, it.pit(), 0);
1485 }
1486
1487
1488 void LyXText::rejectChange(LCursor & cur)
1489 {
1490         BOOST_ASSERT(this == cur.text());
1491         if (!cur.selection() && cur.lastpos() != 0)
1492                 return;
1493
1494         recordUndoSelection(cur, Undo::INSERT);
1495
1496         DocIterator it = cur.selectionBegin();
1497         DocIterator et = cur.selectionEnd();
1498         pit_type pit = it.pit();
1499         bool isInserted = pars_[pit].isInserted(it.pos());
1500         for (; pit <= et.pit(); ++pit) {
1501                 pos_type left  = ( pit == it.pit() ? it.pos() : 0 );
1502                 pos_type right =
1503                     ( pit == et.pit() ? et.pos() : pars_[pit].size() + 1 );
1504                 pars_[pit].rejectChanges(left, right);
1505         }
1506         if (isInserted) {
1507                 ParagraphList & plist = paragraphs();
1508                 if (it.pit() + 1 < et.pit())
1509                         pars_.erase(boost::next(plist.begin(), it.pit() + 1),
1510                                     boost::next(plist.begin(), et.pit()));
1511                 // Paragraph merge if appropriate:
1512                 // FIXME: change tracking (MG)
1513                 if (pars_[it.pit()].isInserted(pars_[it.pit()].size())) {
1514                         setCursorIntern(cur, it.pit() + 1, 0);
1515                         backspacePos0(cur);
1516                 }
1517         }
1518         finishUndo();
1519         cur.clearSelection();
1520         setCursorIntern(cur, it.pit(), 0);
1521 }
1522
1523
1524 // Delete from cursor up to the end of the current or next word.
1525 void LyXText::deleteWordForward(LCursor & cur)
1526 {
1527         BOOST_ASSERT(this == cur.text());
1528         if (cur.lastpos() == 0)
1529                 cursorRight(cur);
1530         else {
1531                 cur.resetAnchor();
1532                 cur.selection() = true;
1533                 cursorRightOneWord(cur);
1534                 cur.setSelection();
1535                 cutSelection(cur, true, false);
1536         }
1537 }
1538
1539
1540 // Delete from cursor to start of current or prior word.
1541 void LyXText::deleteWordBackward(LCursor & cur)
1542 {
1543         BOOST_ASSERT(this == cur.text());
1544         if (cur.lastpos() == 0)
1545                 cursorLeft(cur);
1546         else {
1547                 cur.resetAnchor();
1548                 cur.selection() = true;
1549                 cursorLeftOneWord(cur);
1550                 cur.setSelection();
1551                 cutSelection(cur, true, false);
1552         }
1553 }
1554
1555
1556 // Kill to end of line.
1557 void LyXText::deleteLineForward(LCursor & cur)
1558 {
1559         BOOST_ASSERT(this == cur.text());
1560         if (cur.lastpos() == 0) {
1561                 // Paragraph is empty, so we just go to the right
1562                 cursorRight(cur);
1563         } else {
1564                 cur.resetAnchor();
1565                 cur.selection() = true; // to avoid deletion
1566                 cursorEnd(cur);
1567                 cur.setSelection();
1568                 // What is this test for ??? (JMarc)
1569                 if (!cur.selection())
1570                         deleteWordForward(cur);
1571                 else
1572                         cutSelection(cur, true, false);
1573         }
1574 }
1575
1576
1577 void LyXText::changeCase(LCursor & cur, LyXText::TextCase action)
1578 {
1579         BOOST_ASSERT(this == cur.text());
1580         CursorSlice from;
1581         CursorSlice to;
1582
1583         if (cur.selection()) {
1584                 from = cur.selBegin();
1585                 to = cur.selEnd();
1586         } else {
1587                 from = cur.top();
1588                 getWord(from, to, PARTIAL_WORD);
1589                 cursorRightOneWord(cur);
1590         }
1591
1592         recordUndoSelection(cur);
1593
1594         pos_type pos = from.pos();
1595         int par = from.pit();
1596
1597         while (par != int(pars_.size()) && (pos != to.pos() || par != to.pit())) {
1598                 pit_type pit = par;
1599                 if (pos == pars_[pit].size()) {
1600                         ++par;
1601                         pos = 0;
1602                         continue;
1603                 }
1604                 char_type c = pars_[pit].getChar(pos);
1605                 if (c != Paragraph::META_INSET) {
1606                         switch (action) {
1607                         case text_lowercase:
1608                                 c = lowercase(c);
1609                                 break;
1610                         case text_capitalization:
1611                                 c = uppercase(c);
1612                                 action = text_lowercase;
1613                                 break;
1614                         case text_uppercase:
1615                                 c = uppercase(c);
1616                                 break;
1617                         }
1618                 }
1619
1620                 // FIXME: change tracking (MG)
1621                 // sorry but we are no longer allowed to set a single character directly
1622                 // we have to rewrite this method in terms of erase&insert operations
1623                 //pars_[pit].setChar(pos, c);
1624                 ++pos;
1625         }
1626 }
1627
1628
1629 bool LyXText::erase(LCursor & cur)
1630 {
1631         BOOST_ASSERT(this == cur.text());
1632         bool needsUpdate = false;
1633
1634         if (cur.pos() != cur.lastpos()) {
1635                 recordUndo(cur, Undo::DELETE, cur.pit());
1636                 setCursorIntern(cur, cur.pit(), cur.pos() + 1, false, cur.boundary());
1637                 needsUpdate = backspace(cur);
1638                 // FIXME: change tracking (MG)
1639                 if (cur.paragraph().isDeleted(cur.pos()))
1640                         cur.posRight();
1641         } else if (cur.pit() != cur.lastpit()) {
1642                 LCursor scur = cur;
1643
1644                 setCursorIntern(cur, cur.pit() + 1, 0, false, false);
1645                 if (pars_[cur.pit()].layout() == pars_[scur.pit()].layout()) {
1646                         recordUndo(scur, Undo::DELETE, scur.pit());
1647                         needsUpdate = backspace(cur);
1648                         if (cur.buffer().params().trackChanges) {
1649                                 // FIXME: Change tracking (MG)
1650                                 // move forward after the paragraph break is DELETED
1651                                 Paragraph & par = cur.paragraph();
1652                                 // FIXME: change tracking (MG)
1653                                 if (par.isDeleted(par.size()))
1654                                         setCursorIntern(cur, cur.pit() + 1, 0);
1655                                 }
1656                 } else {
1657                         setCursorIntern(scur, scur.pit(), scur.pos(), false, scur.boundary());
1658                 }
1659         } else
1660                 needsUpdate = dissolveInset(cur);
1661
1662         return needsUpdate;
1663 }
1664
1665
1666 bool LyXText::backspacePos0(LCursor & cur)
1667 {
1668         BOOST_ASSERT(this == cur.text());
1669         bool needsUpdate = false;
1670
1671         Paragraph & par = cur.paragraph();
1672         // is it an empty paragraph?
1673         pos_type lastpos = cur.lastpos();
1674         if (lastpos == 0 || (lastpos == 1 && par.isSeparator(0))) {
1675                 // This is an empty paragraph and we delete it just
1676                 // by moving the cursor one step
1677                 // left and let the DeleteEmptyParagraphMechanism
1678                 // handle the actual deletion of the paragraph.
1679
1680                 if (cur.pit() != 0) {
1681                         // For KeepEmpty layouts we need to get
1682                         // rid of the keepEmpty setting first.
1683                         // And the only way to do this is to
1684                         // reset the layout to something
1685                         // else: f.ex. the default layout.
1686                         if (par.allowEmpty()) {
1687                                 Buffer & buf = cur.buffer();
1688                                 BufferParams const & bparams = buf.params();
1689                                 par.layout(bparams.getLyXTextClass().defaultLayout());
1690                         }
1691
1692                         cursorLeft(cur);
1693                         return true;
1694                 }
1695         }
1696
1697         if (cur.pit() != 0)
1698                 recordUndo(cur, Undo::DELETE, cur.pit() - 1);
1699
1700         pit_type tmppit = cur.pit();
1701         // We used to do cursorLeftIntern() here, but it is
1702         // not a good idea since it triggers the auto-delete
1703         // mechanism. So we do a cursorLeftIntern()-lite,
1704         // without the dreaded mechanism. (JMarc)
1705         if (cur.pit() != 0) {
1706                 // steps into the above paragraph.
1707                 setCursorIntern(cur, cur.pit() - 1,
1708                                 pars_[cur.pit() - 1].size(),
1709                                 false);
1710         }
1711
1712         // Pasting is not allowed, if the paragraphs have different
1713         // layout. I think it is a real bug of all other
1714         // word processors to allow it. It confuses the user.
1715         // Correction: Pasting is always allowed with standard-layout
1716         // Correction (Jug 20050717): Remove check about alignment!
1717         Buffer & buf = cur.buffer();
1718         BufferParams const & bufparams = buf.params();
1719         LyXTextClass const & tclass = bufparams.getLyXTextClass();
1720         pit_type const cpit = cur.pit();
1721
1722         if (cpit != tmppit
1723             && (pars_[cpit].layout() == pars_[tmppit].layout()
1724                 || pars_[tmppit].layout() == tclass.defaultLayout()))
1725         {
1726                 mergeParagraph(bufparams, pars_, cpit);
1727                 needsUpdate = true;
1728
1729                 if (cur.pos() != 0 && pars_[cpit].isSeparator(cur.pos() - 1))
1730                                 --cur.pos();
1731
1732                 // the counters may have changed
1733                 ParIterator par_it(cur);
1734                 updateLabels(cur.buffer(), par_it);
1735
1736                 setCursor(cur, cur.pit(), cur.pos(), false);
1737         }
1738         return needsUpdate;
1739 }
1740
1741
1742 bool LyXText::backspace(LCursor & cur)
1743 {
1744         BOOST_ASSERT(this == cur.text());
1745         bool needsUpdate = false;
1746         if (cur.pos() == 0) {
1747                 if (cur.pit() == 0)
1748                         return dissolveInset(cur);
1749
1750                 // The cursor is at the beginning of a paragraph, so
1751                 // the the backspace will collapse two paragraphs into
1752                 // one.
1753
1754                 if (cur.pit() != 0 && cur.buffer().params().trackChanges) {
1755                         // FIXME: Change tracking (MG)
1756                         // Previous paragraph, mark "carriage return" as
1757                         // deleted:
1758                         Paragraph & par = pars_[cur.pit() - 1];
1759                         // Take care of a just inserted para break:
1760                         // FIXME: change tracking (MG)
1761                         if (!par.isInserted(par.size())) {
1762                                 // FIXME: change tracking (MG)
1763                                 par.setChange(par.size(), Change(Change::DELETED));
1764                                 setCursorIntern(cur, cur.pit() - 1, par.size());
1765                                 return true;
1766                         }
1767                 }
1768
1769                 needsUpdate = backspacePos0(cur);
1770
1771         } else {
1772                 // this is the code for a normal backspace, not pasting
1773                 // any paragraphs
1774                 recordUndo(cur, Undo::DELETE);
1775                 // We used to do cursorLeftIntern() here, but it is
1776                 // not a good idea since it triggers the auto-delete
1777                 // mechanism. So we do a cursorLeftIntern()-lite,
1778                 // without the dreaded mechanism. (JMarc)
1779                 setCursorIntern(cur, cur.pit(), cur.pos() - 1,
1780                                 false, cur.boundary());
1781                 // FIXME: change tracking (MG)
1782                 cur.paragraph().eraseChar(cur.pos(), cur.buffer().params().trackChanges);
1783         }
1784
1785         if (cur.pos() == cur.lastpos())
1786                 setCurrentFont(cur);
1787
1788         setCursor(cur, cur.pit(), cur.pos(), false, cur.boundary());
1789
1790         return needsUpdate;
1791 }
1792
1793
1794 bool LyXText::dissolveInset(LCursor & cur) {
1795         BOOST_ASSERT(this == cur.text());
1796
1797         if (isMainText() || cur.inset().nargs() != 1)
1798                 return false;
1799
1800         recordUndoInset(cur);
1801         cur.selHandle(false);
1802         // save position
1803         pos_type spos = cur.pos();
1804         pit_type spit = cur.pit();
1805         ParagraphList plist;
1806         if (cur.lastpit() != 0 || cur.lastpos() != 0)
1807                 plist = paragraphs();
1808         cur.popLeft();
1809         // store cursor offset
1810         if (spit == 0)
1811                 spos += cur.pos();
1812         spit += cur.pit();
1813         Buffer & b = cur.buffer();
1814         // FIXME: change tracking (MG)
1815         cur.paragraph().eraseChar(cur.pos(), b.params().trackChanges);
1816         if (!plist.empty()) {
1817                 pasteParagraphList(cur, plist, b.params().textclass,
1818                                    b.errorList("Paste"));
1819                 // restore position
1820                 cur.pit() = std::min(cur.lastpit(), spit);
1821                 cur.pos() = std::min(cur.lastpos(), spos);
1822         }
1823         cur.clearSelection();
1824         cur.resetAnchor();
1825         return true;
1826 }
1827
1828
1829 Row const & LyXText::firstRow() const
1830 {
1831         return *paragraphs().front().rows().begin();
1832 }
1833
1834
1835 bool LyXText::redoParagraph(pit_type const pit)
1836 {
1837         // remove rows of paragraph, keep track of height changes
1838         Paragraph & par = pars_[pit];
1839
1840         // Add bibitem insets if necessary
1841         if (par.layout()->labeltype == LABEL_BIBLIO) {
1842                 bool hasbibitem(false);
1843                 if (!par.insetlist.empty()
1844                         // Insist on it being in pos 0
1845                         && par.getChar(0) == Paragraph::META_INSET) {
1846                         InsetBase * inset = par.insetlist.begin()->inset;
1847                         if (inset->lyxCode() == InsetBase::BIBITEM_CODE)
1848                                 hasbibitem = true;
1849                 }
1850                 if (!hasbibitem) {
1851                         InsetBibitem * inset(new
1852                                 InsetBibitem(InsetCommandParams("bibitem")));
1853                         // FIXME: change tracking (MG)
1854                         par.insertInset(0, static_cast<InsetBase *>(inset), Change(Change::INSERTED));
1855                         bv()->cursor().posRight();
1856                 }
1857         }
1858
1859         // redo insets
1860         // FIXME: We should always use getFont(), see documentation of
1861         // noFontChange() in insetbase.h.
1862         LyXFont const bufferfont = bv()->buffer()->params().getFont();
1863         InsetList::iterator ii = par.insetlist.begin();
1864         InsetList::iterator iend = par.insetlist.end();
1865         for (; ii != iend; ++ii) {
1866                 Dimension dim;
1867                 int const w = maxwidth_ - leftMargin(pit, ii->pos) - rightMargin(par);
1868                 LyXFont const & font = ii->inset->noFontChange() ?
1869                         bufferfont :
1870                         getFont(par, ii->pos);
1871                 MetricsInfo mi(bv(), font, w);
1872                 ii->inset->metrics(mi, dim);
1873         }
1874
1875         // rebreak the paragraph
1876         par.rows().clear();
1877         Dimension dim;
1878
1879         par.setBeginOfBody();
1880         pos_type z = 0;
1881         do {
1882                 Row row(z);
1883                 rowBreakPoint(pit, row);
1884                 setRowWidth(pit, row);
1885                 setHeightOfRow(pit, row);
1886                 par.rows().push_back(row);
1887                 dim.wid = std::max(dim.wid, row.width());
1888                 dim.des += row.height();
1889                 z = row.endpos();
1890         } while (z < par.size());
1891
1892         // Make sure that if a par ends in newline, there is one more row
1893         // under it
1894         // FIXME this is a dirty trick. Now the _same_ position in the
1895         // paragraph occurs in _two_ different rows, and has two different
1896         // display positions, leading to weird behaviour when moving up/down.
1897         if (z > 0 && par.isNewline(z - 1)) {
1898                 Row row(z - 1);
1899                 row.endpos(z - 1);
1900                 setRowWidth(pit, row);
1901                 setHeightOfRow(pit, row);
1902                 par.rows().push_back(row);
1903                 dim.des += row.height();
1904         }
1905
1906         dim.asc += par.rows()[0].ascent();
1907         dim.des -= par.rows()[0].ascent();
1908
1909         bool const same = dim == par.dim();
1910
1911         par.dim() = dim;
1912         //lyxerr << "redoParagraph: " << par.rows().size() << " rows\n";
1913
1914         return !same;
1915 }
1916
1917
1918 void LyXText::metrics(MetricsInfo & mi, Dimension & dim)
1919 {
1920         //BOOST_ASSERT(mi.base.textwidth);
1921         if (mi.base.textwidth)
1922                 maxwidth_ = mi.base.textwidth;
1923         //lyxerr << "LyXText::metrics: width: " << mi.base.textwidth
1924         //      << " maxWidth: " << maxwidth_ << "\nfont: " << mi.base.font << endl;
1925         // save the caller's font locally:
1926         font_ = mi.base.font;
1927
1928         unsigned int h = 0;
1929         unsigned int w = 0;
1930         for (pit_type pit = 0, n = paragraphs().size(); pit != n; ++pit) {
1931                 redoParagraph(pit);
1932                 Paragraph & par = paragraphs()[pit];
1933                 h += par.height();
1934                 if (w < par.width())
1935                         w = par.width();
1936         }
1937
1938         dim.wid = w;
1939         dim.asc = pars_[0].ascent();
1940         dim.des = h - dim.asc;
1941
1942         dim_ = dim;
1943 }
1944
1945
1946 // only used for inset right now. should also be used for main text
1947 void LyXText::draw(PainterInfo & pi, int x, int y) const
1948 {
1949         paintTextInset(*this, pi, x, y);
1950 }
1951
1952
1953 #if 0
1954 // only used for inset right now. should also be used for main text
1955 void LyXText::drawSelection(PainterInfo & pi, int x , int) const
1956 {
1957         LCursor & cur = pi.base.bv->cursor();
1958         if (!cur.selection())
1959                 return;
1960         if (!ptr_cmp(cur.text(), this))
1961                 return;
1962
1963         lyxerr << "draw selection at " << x << endl;
1964
1965         DocIterator beg = cur.selectionBegin();
1966         DocIterator end = cur.selectionEnd();
1967
1968         // the selection doesn't touch the visible screen
1969         if (bv_funcs::status(pi.base.bv, beg) == bv_funcs::CUR_BELOW
1970             || bv_funcs::status(pi.base.bv, end) == bv_funcs::CUR_ABOVE)
1971                 return;
1972
1973         Paragraph const & par1 = pars_[beg.pit()];
1974         Paragraph const & par2 = pars_[end.pit()];
1975
1976         Row const & row1 = par1.getRow(beg.pos(), beg.boundary());
1977         Row const & row2 = par2.getRow(end.pos(), end.boundary());
1978
1979         int y1,x1,x2;
1980         if (bv_funcs::status(pi.base.bv, beg) == bv_funcs::CUR_ABOVE) {
1981                 y1 = 0;
1982                 x1 = 0;
1983                 x2 = 0;
1984         } else {
1985                 y1 = bv_funcs::getPos(beg).y_ - row1.ascent();
1986                 int const startx = cursorX(beg.top(), begin.boundary());
1987                 x1 = isRTL(par1) ? startx : 0;
1988                 x2 = isRTL(par1) ? 0 + dim_.wid : startx;
1989         }
1990
1991         int y2,X1,X2;
1992         if (bv_funcs::status(pi.base.bv, end) == bv_funcs::CUR_BELOW) {
1993                 y2 = pi.base.bv->workHeight();
1994                 X1 = 0;
1995                 X2 = 0;
1996         } else {
1997                 y2 = bv_funcs::getPos(end).y_ + row2.descent();
1998                 int const endx = cursorX(end.top(), end.boundary());
1999                 X1 = isRTL(par2) ? 0 : endx;
2000                 X2 = isRTL(par2) ? endx : 0 + dim_.wid;
2001         }
2002
2003         lyxerr << " y1: " << y1 << " y2: " << y2
2004                 << " xo: " << xo_ << " wid: " << dim_.wid
2005                 << endl;
2006
2007         // paint big rectangle in one go
2008         pi.pain.fillRectangle(x, y1, dim_.wid, y2 - y1, LColor::selection);
2009
2010         // reset background at begin of first selected line
2011         pi.pain.fillRectangle(x + x1, y1, x2 - x1, row1.height(),
2012                 LColor::background);
2013
2014         // reset background at end of last selected line
2015         pi.pain.fillRectangle(x + X1, y2  - row2.height(),
2016                 X2 - X1, row2.height(), LColor::background);
2017 }
2018
2019 #else
2020
2021 void LyXText::drawSelection(PainterInfo & pi, int x, int) const
2022 {
2023         LCursor & cur = pi.base.bv->cursor();
2024         if (!cur.selection())
2025                 return;
2026         if (!ptr_cmp(cur.text(), this))
2027                 return;
2028
2029         lyxerr[Debug::DEBUG]
2030                 << BOOST_CURRENT_FUNCTION
2031                 << "draw selection at " << x
2032                 << endl;
2033
2034         DocIterator beg = cur.selectionBegin();
2035         DocIterator end = cur.selectionEnd();
2036
2037         BufferView * bv = pi.base.bv;
2038
2039         // the selection doesn't touch the visible screen
2040         if (bv_funcs::status(bv, beg) == bv_funcs::CUR_BELOW
2041             || bv_funcs::status(bv, end) == bv_funcs::CUR_ABOVE)
2042                 return;
2043
2044         Paragraph const & par1 = pars_[beg.pit()];
2045         Paragraph const & par2 = pars_[end.pit()];
2046
2047         bool const above = (bv_funcs::status(bv, beg)
2048                             == bv_funcs::CUR_ABOVE);
2049         bool const below = (bv_funcs::status(bv, end)
2050                             == bv_funcs::CUR_BELOW);
2051         int y1,y2,x1,x2;
2052         if (above) {
2053                 y1 = 0;
2054                 y2 = 0;
2055                 x1 = 0;
2056                 x2 = dim_.wid;
2057         } else {
2058                 Row const & row1 = par1.getRow(beg.pos(), beg.boundary());
2059                 y1 = bv_funcs::getPos(*bv, beg, beg.boundary()).y_ - row1.ascent();
2060                 y2 = y1 + row1.height();
2061                 int const startx = cursorX(beg.top(), beg.boundary());
2062                 x1 = !isRTL(par1) ? startx : 0;
2063                 x2 = !isRTL(par1) ? 0 + dim_.wid : startx;
2064         }
2065
2066         int Y1,Y2,X1,X2;
2067         if (below) {
2068                 Y1 = bv->workHeight();
2069                 Y2 = bv->workHeight();
2070                 X1 = 0;
2071                 X2 = dim_.wid;
2072         } else {
2073                 Row const & row2 = par2.getRow(end.pos(), end.boundary());
2074                 Y1 = bv_funcs::getPos(*bv, end, end.boundary()).y_ - row2.ascent();
2075                 Y2 = Y1 + row2.height();
2076                 int const endx = cursorX(end.top(), end.boundary());
2077                 X1 = !isRTL(par2) ? 0 : endx;
2078                 X2 = !isRTL(par2) ? endx : 0 + dim_.wid;
2079         }
2080
2081         if (!above && !below && &par1.getRow(beg.pos(), beg.boundary())
2082             == &par2.getRow(end.pos(), end.boundary()))
2083         {
2084                 // paint only one rectangle
2085                 int const b( !isRTL(par1) ? x + x1 : x + X1 );
2086                 int const w( !isRTL(par1) ? X2 - x1 : x2 - X1 );
2087                 pi.pain.fillRectangle(b, y1, w, y2 - y1, LColor::selection);
2088                 return;
2089         }
2090
2091         lyxerr[Debug::DEBUG] << " y1: " << y1 << " y2: " << y2
2092                << "X1:" << X1 << " x2: " << X2 << " wid: " << dim_.wid
2093                 << endl;
2094
2095         // paint upper rectangle
2096         pi.pain.fillRectangle(x + x1, y1, x2 - x1, y2 - y1,
2097                                       LColor::selection);
2098         // paint bottom rectangle
2099         pi.pain.fillRectangle(x + X1, Y1, X2 - X1, Y2 - Y1,
2100                                       LColor::selection);
2101         // paint center rectangle
2102         pi.pain.fillRectangle(x, y2, dim_.wid,
2103                               Y1 - y2, LColor::selection);
2104 }
2105 #endif
2106
2107 bool LyXText::isLastRow(pit_type pit, Row const & row) const
2108 {
2109         return row.endpos() >= pars_[pit].size()
2110                 && pit + 1 == pit_type(paragraphs().size());
2111 }
2112
2113
2114 bool LyXText::isFirstRow(pit_type pit, Row const & row) const
2115 {
2116         return row.pos() == 0 && pit == 0;
2117 }
2118
2119
2120 void LyXText::getWord(CursorSlice & from, CursorSlice & to,
2121         word_location const loc)
2122 {
2123         Paragraph const & from_par = pars_[from.pit()];
2124         switch (loc) {
2125         case WHOLE_WORD_STRICT:
2126                 if (from.pos() == 0 || from.pos() == from_par.size()
2127                     || !from_par.isLetter(from.pos())
2128                     || !from_par.isLetter(from.pos() - 1)) {
2129                         to = from;
2130                         return;
2131                 }
2132                 // no break here, we go to the next
2133
2134         case WHOLE_WORD:
2135                 // If we are already at the beginning of a word, do nothing
2136                 if (!from.pos() || !from_par.isLetter(from.pos() - 1))
2137                         break;
2138                 // no break here, we go to the next
2139
2140         case PREVIOUS_WORD:
2141                 // always move the cursor to the beginning of previous word
2142                 while (from.pos() && from_par.isLetter(from.pos() - 1))
2143                         --from.pos();
2144                 break;
2145         case NEXT_WORD:
2146                 lyxerr << "LyXText::getWord: NEXT_WORD not implemented yet"
2147                        << endl;
2148                 break;
2149         case PARTIAL_WORD:
2150                 // no need to move the 'from' cursor
2151                 break;
2152         }
2153         to = from;
2154         Paragraph & to_par = pars_[to.pit()];
2155         while (to.pos() < to_par.size() && to_par.isLetter(to.pos()))
2156                 ++to.pos();
2157 }
2158
2159
2160 void LyXText::write(Buffer const & buf, std::ostream & os) const
2161 {
2162         ParagraphList::const_iterator pit = paragraphs().begin();
2163         ParagraphList::const_iterator end = paragraphs().end();
2164         depth_type dth = 0;
2165         for (; pit != end; ++pit)
2166                 pit->write(buf, os, buf.params(), dth);
2167 }
2168
2169
2170 bool LyXText::read(Buffer const & buf, LyXLex & lex, ErrorList & errorList)
2171 {
2172         depth_type depth = 0;
2173
2174         while (lex.isOK()) {
2175                 lex.nextToken();
2176                 string const token = lex.getString();
2177
2178                 if (token.empty())
2179                         continue;
2180
2181                 if (token == "\\end_inset")
2182                         break;
2183
2184                 if (token == "\\end_body")
2185                         continue;
2186
2187                 if (token == "\\begin_body")
2188                         continue;
2189
2190                 if (token == "\\end_document")
2191                         return false;
2192
2193                 if (token == "\\begin_layout") {
2194                         lex.pushToken(token);
2195
2196                         Paragraph par;
2197                         par.params().depth(depth);
2198                         par.setFont(0, LyXFont(LyXFont::ALL_INHERIT, buf.params().language));
2199                         pars_.push_back(par);
2200
2201                         // FIXME: goddamn InsetTabular makes us pass a Buffer
2202                         // not BufferParams
2203                         lyx::readParagraph(buf, pars_.back(), lex, errorList);
2204
2205                 } else if (token == "\\begin_deeper") {
2206                         ++depth;
2207                 } else if (token == "\\end_deeper") {
2208                         if (!depth) {
2209                                 lex.printError("\\end_deeper: " "depth is already null");
2210                         } else {
2211                                 --depth;
2212                         }
2213                 } else {
2214                         lyxerr << "Handling unknown body token: `"
2215                                << token << '\'' << endl;
2216                 }
2217         }
2218         return true;
2219 }
2220
2221
2222 int LyXText::ascent() const
2223 {
2224         return dim_.asc;
2225 }
2226
2227
2228 int LyXText::descent() const
2229 {
2230         return dim_.des;
2231 }
2232
2233
2234 int LyXText::cursorX(CursorSlice const & sl, bool boundary) const
2235 {
2236         pit_type const pit = sl.pit();
2237         Paragraph const & par = pars_[pit];
2238         if (par.rows().empty())
2239                 return 0;
2240
2241         pos_type ppos = sl.pos();
2242         // Correct position in front of big insets
2243         bool const boundary_correction = ppos != 0 && boundary;
2244         if (boundary_correction)
2245                 --ppos;
2246
2247         Row const & row = par.getRow(sl.pos(), boundary);
2248
2249         pos_type cursor_vpos = 0;
2250
2251         RowMetrics const m = computeRowMetrics(pit, row);
2252         double x = m.x;
2253
2254         pos_type const row_pos  = row.pos();
2255         pos_type const end      = row.endpos();
2256
2257         if (end <= row_pos)
2258                 cursor_vpos = row_pos;
2259         else if (ppos >= end)
2260                 cursor_vpos = isRTL(par) ? row_pos : end;
2261         else if (ppos > row_pos && ppos >= end)
2262                 // Place cursor after char at (logical) position pos - 1
2263                 cursor_vpos = (bidi.level(ppos - 1) % 2 == 0)
2264                         ? bidi.log2vis(ppos - 1) + 1 : bidi.log2vis(ppos - 1);
2265         else
2266                 // Place cursor before char at (logical) position ppos
2267                 cursor_vpos = (bidi.level(ppos) % 2 == 0)
2268                         ? bidi.log2vis(ppos) : bidi.log2vis(ppos) + 1;
2269
2270         pos_type body_pos = par.beginOfBody();
2271         if (body_pos > 0 &&
2272             (body_pos > end || !par.isLineSeparator(body_pos - 1)))
2273                 body_pos = 0;
2274
2275         // Use font span to speed things up, see below
2276         FontSpan font_span;
2277         LyXFont font;
2278         FontMetrics const & labelfm = theFontMetrics(getLabelFont(par));
2279
2280         for (pos_type vpos = row_pos; vpos < cursor_vpos; ++vpos) {
2281                 pos_type pos = bidi.vis2log(vpos);
2282                 if (body_pos > 0 && pos == body_pos - 1) {
2283                         // FIXME UNICODE
2284                         docstring const lsep = from_utf8(par.layout()->labelsep);
2285                         x += m.label_hfill + labelfm.width(lsep);
2286                         if (par.isLineSeparator(body_pos - 1))
2287                                 x -= singleWidth(par, body_pos - 1);
2288                 }
2289
2290                 // Use font span to speed things up, see above
2291                 if (pos < font_span.first || pos > font_span.last) {
2292                         font_span = par.fontSpan(pos);
2293                         font = getFont(par, pos);
2294                 }
2295
2296                 x += singleWidth(par, pos, par.getChar(pos), font);
2297
2298                 if (par.hfillExpansion(row, pos))
2299                         x += (pos >= body_pos) ? m.hfill : m.label_hfill;
2300                 else if (par.isSeparator(pos) && pos >= body_pos)
2301                         x += m.separator;
2302         }
2303
2304         // see correction above
2305         if (boundary_correction)
2306                 if (getFont(par, ppos).isVisibleRightToLeft())
2307                         x -= singleWidth(par, ppos);
2308                 else
2309                         x += singleWidth(par, ppos);
2310
2311         // Make sure inside an inset we always count from the left
2312         // edge (bidi!) -- MV
2313         if (sl.pos() < par.size()) {
2314                 font = getFont(par, sl.pos());
2315                 if (!boundary && font.isVisibleRightToLeft()
2316                   && par.isInset(sl.pos()))
2317                         x -= par.getInset(sl.pos())->width();
2318         }
2319         return int(x);
2320 }
2321
2322
2323 int LyXText::cursorY(CursorSlice const & sl, bool boundary) const
2324 {
2325         //lyxerr << "LyXText::cursorY: boundary: " << boundary << std::endl;
2326         Paragraph const & par = getPar(sl.pit());
2327         if (par.rows().empty())
2328                 return 0;
2329
2330         int h = 0;
2331         h -= pars_[0].rows()[0].ascent();
2332         for (pit_type pit = 0; pit < sl.pit(); ++pit)
2333                 h += pars_[pit].height();
2334         int pos = sl.pos();
2335         if (pos && boundary)
2336                 --pos;
2337         size_t const rend = par.pos2row(pos);
2338         for (size_t rit = 0; rit != rend; ++rit)
2339                 h += par.rows()[rit].height();
2340         h += par.rows()[rend].ascent();
2341         return h;
2342 }
2343
2344
2345 // Returns the current font and depth as a message.
2346 string LyXText::currentState(LCursor & cur)
2347 {
2348         BOOST_ASSERT(this == cur.text());
2349         Buffer & buf = cur.buffer();
2350         Paragraph const & par = cur.paragraph();
2351         std::ostringstream os;
2352
2353         if (buf.params().trackChanges)
2354                 os << "[C] ";
2355
2356         Change change = par.lookupChange(cur.pos());
2357
2358         if (change.type != Change::UNCHANGED) {
2359                 Author const & a = buf.params().authors().get(change.author);
2360                 os << to_utf8(_("Change: ")) << a.name();
2361                 if (!a.email().empty())
2362                         os << " (" << a.email() << ")";
2363                 os << to_utf8(_(" at ")) << ctime(&change.changetime);
2364                 os << " : ";
2365         }
2366
2367         // I think we should only show changes from the default
2368         // font. (Asger)
2369         // No, from the document font (MV)
2370         LyXFont font = real_current_font;
2371         font.reduce(buf.params().getFont());
2372
2373         // avoid to_utf8(_(...)) re-entrance problem
2374         string const s = font.stateText(&buf.params());
2375         os << to_utf8(bformat(_("Font: %1$s"), from_utf8(s)));
2376
2377         // os << to_utf8(bformat(_("Font: %1$s"), font.stateText(&buf.params)));
2378
2379         // The paragraph depth
2380         int depth = cur.paragraph().getDepth();
2381         if (depth > 0)
2382                 os << to_utf8(bformat(_(", Depth: %1$d"), depth));
2383
2384         // The paragraph spacing, but only if different from
2385         // buffer spacing.
2386         Spacing const & spacing = par.params().spacing();
2387         if (!spacing.isDefault()) {
2388                 os << to_utf8(_(", Spacing: "));
2389                 switch (spacing.getSpace()) {
2390                 case Spacing::Single:
2391                         os << to_utf8(_("Single"));
2392                         break;
2393                 case Spacing::Onehalf:
2394                         os << to_utf8(_("OneHalf"));
2395                         break;
2396                 case Spacing::Double:
2397                         os << to_utf8(_("Double"));
2398                         break;
2399                 case Spacing::Other:
2400                         os << to_utf8(_("Other (")) << spacing.getValueAsString() << ')';
2401                         break;
2402                 case Spacing::Default:
2403                         // should never happen, do nothing
2404                         break;
2405                 }
2406         }
2407
2408 #ifdef DEVEL_VERSION
2409         os << to_utf8(_(", Inset: ")) << &cur.inset();
2410         os << to_utf8(_(", Paragraph: ")) << cur.pit();
2411         os << to_utf8(_(", Id: ")) << par.id();
2412         os << to_utf8(_(", Position: ")) << cur.pos();
2413         os << to_utf8(_(", Boundary: ")) << cur.boundary();
2414 //      Row & row = cur.textRow();
2415 //      os << bformat(_(", Row b:%1$d e:%2$d"), row.pos(), row.endpos());
2416 #endif
2417         return os.str();
2418 }
2419
2420
2421 string LyXText::getPossibleLabel(LCursor & cur) const
2422 {
2423         pit_type pit = cur.pit();
2424
2425         LyXLayout_ptr layout = pars_[pit].layout();
2426
2427         if (layout->latextype == LATEX_PARAGRAPH && pit != 0) {
2428                 LyXLayout_ptr const & layout2 = pars_[pit - 1].layout();
2429                 if (layout2->latextype != LATEX_PARAGRAPH) {
2430                         --pit;
2431                         layout = layout2;
2432                 }
2433         }
2434
2435         string name = layout->latexname();
2436
2437         // for captions, we want the abbreviation of the float type
2438         if (layout->labeltype == LABEL_SENSITIVE) {
2439                 // Search for the first float or wrap inset in the iterator
2440                 for (int i = cur.depth(); --i >= 0; ) {
2441                         InsetBase * const in = &cur[i].inset();
2442                         if (in->lyxCode() == InsetBase::FLOAT_CODE
2443                             || in->lyxCode() == InsetBase::WRAP_CODE) {
2444                                 name = to_utf8(in->getInsetName());
2445                                 break;
2446                         }
2447                 }
2448         }
2449
2450         string text = name.substr(0, 3);
2451         if (name == "theorem")
2452                 text = "thm"; // Create a correct prefix for prettyref
2453
2454         text += ':';
2455         if (layout->latextype == LATEX_PARAGRAPH || lyxrc.label_init_length < 0)
2456                 text.erase();
2457
2458         // FIXME UNICODE
2459         string par_text = to_utf8(pars_[pit].asString(cur.buffer(), false));
2460         for (int i = 0; i < lyxrc.label_init_length; ++i) {
2461                 if (par_text.empty())
2462                         break;
2463                 string head;
2464                 par_text = split(par_text, head, ' ');
2465                 // Is it legal to use spaces in labels ?
2466                 if (i > 0)
2467                         text += '-';
2468                 text += head;
2469         }
2470
2471         return text;
2472 }
2473
2474
2475 //pos_type LyXText::x2pos(pit_type pit, int row, int x) const
2476 //{
2477 //      int lastx = 0;
2478 //      int currx = 0;
2479 //      Paragraph const & par = pars_[pit];
2480 //      Row const & r = par.rows()[row];
2481 //      int pos = r.pos();
2482 //      for (; currx < x && pos < r.endpos(); ++pos) {
2483 //              lastx = currx;
2484 //              currx += singleWidth(par, pos);
2485 //      }
2486 //      if (abs(lastx - x) < abs(currx - x) && pos != r.pos())
2487 //              --pos;
2488 //      return pos;
2489 //}
2490
2491
2492 pos_type LyXText::x2pos(pit_type pit, int row, int x) const
2493 {
2494         BOOST_ASSERT(row < int(pars_[pit].rows().size()));
2495         bool bound = false;
2496         Row const & r = pars_[pit].rows()[row];
2497         return r.pos() + getColumnNearX(pit, r, x, bound);
2498 }
2499
2500
2501 //int LyXText::pos2x(pit_type pit, pos_type pos) const
2502 //{
2503 //      Paragraph const & par = pars_[pit];
2504 //      Row const & r = par.rows()[row];
2505 //      int x = 0;
2506 //      pos -= r.pos();
2507 //}
2508
2509
2510 // x,y are screen coordinates
2511 // sets cursor only within this LyXText
2512 bool LyXText::setCursorFromCoordinates(LCursor & cur, int const x, int const y)
2513 {
2514         BOOST_ASSERT(this == cur.text());
2515         pit_type pit = getPitNearY(y);
2516         int yy = cur.bv().coordCache().get(this, pit).y_ - pars_[pit].ascent();
2517         lyxerr[Debug::DEBUG]
2518                 << BOOST_CURRENT_FUNCTION
2519                 << ": x: " << x
2520                 << " y: " << y
2521                 << " pit: " << pit
2522                 << " yy: " << yy << endl;
2523
2524         Paragraph const & par = pars_[pit];
2525         int r = 0;
2526         BOOST_ASSERT(par.rows().size());
2527         for (; r < int(par.rows().size()) - 1; ++r) {
2528                 Row const & row = par.rows()[r];
2529                 if (int(yy + row.height()) > y)
2530                         break;
2531                 yy += row.height();
2532         }
2533
2534         Row const & row = par.rows()[r];
2535
2536         lyxerr[Debug::DEBUG]
2537                 << BOOST_CURRENT_FUNCTION
2538                 << ": row " << r
2539                 << " from pos: " << row.pos()
2540                 << endl;
2541
2542         bool bound = false;
2543         int xx = x;
2544         pos_type const pos = row.pos() + getColumnNearX(pit, row, xx, bound);
2545
2546         lyxerr[Debug::DEBUG]
2547                 << BOOST_CURRENT_FUNCTION
2548                 << ": setting cursor pit: " << pit
2549                 << " pos: " << pos
2550                 << endl;
2551
2552         return setCursor(cur, pit, pos, true, bound);
2553 }
2554
2555
2556 } // namespace lyx