src/text.C

   1 /* This file is part of
   2  * ======================================================
   3  *
   4  *           LyX, The Document Processor
   5  *
   6  *           Copyright 1995 Matthias Ettrich
   7  *           Copyright 1995-2000 The LyX Team.
   8  *
   9  * ====================================================== */
  10
  11 #include <config.h>
  12 #include <cstdlib>
  13 #include <cctype>
  14 #include <algorithm>
  15
  16 #include "lyxtext.h"
  17 #include "layout.h"
  18 #include "lyxparagraph.h"
  19 #include "support/textutils.h"
  20 #include "insets/insetbib.h"
  21 #include "insets/insettext.h"
  22 #include "lyx_gui_misc.h"
  23 #include "gettext.h"
  24 #include "bufferparams.h"
  25 #include "buffer.h"
  26 #include "debug.h"
  27 #include "lyxrc.h"
  28 #include "LyXView.h"
  29 #include "Painter.h"
  30 #include "tracer.h"
  31 #include "font.h"
  32 #include "encoding.h"
  33 #include "lyxscreen.h"
  34 #include "bufferview_funcs.h"
  35 #include "language.h"
  36
  37 using std::max;
  38 using std::min;
  39 using std::endl;
  40 using std::pair;
  41
  42 namespace {
  43
  44 int const LYX_PAPER_MARGIN = 20;
  45
  46 } // namespace anon
  47
  48 extern int bibitemMaxWidth(BufferView *, LyXFont const &);
  49
  50
  51 int LyXText::workWidth(BufferView * bview) const
  52 {
  53         if (inset_owner) {
  54                 return inset_owner->textWidth(bview);
  55         }
  56         return bview->workWidth();
  57 }
  58
  59
  60 int LyXText::GetRealCursorX(BufferView * bview) const
  61 {
  62         int x = cursor.x();
  63         if (the_locking_inset && (the_locking_inset->getLyXText(bview)!=this))
  64                 x = the_locking_inset->getLyXText(bview)->GetRealCursorX(bview);
  65         return x;
  66 }
  67
  68
  69 unsigned char LyXText::TransformChar(unsigned char c, LyXParagraph * par,
  70                         LyXParagraph::size_type pos) const
  71 {
  72         if (!Encodings::is_arabic(c))
  73                 if (lyxrc.font_norm_type == LyXRC::ISO_8859_6_8 && isdigit(c))
  74                         return c + (0xb0 - '0');
  75                 else
  76                         return c;
  77
  78         unsigned char const prev_char = pos > 0 ? par->GetChar(pos-1) : ' ';
  79         unsigned char next_char = ' ';
  80 #ifndef NEW_INSETS
  81         for (LyXParagraph::size_type i = pos+1; i < par->Last(); ++i)
  82 #else
  83         for (LyXParagraph::size_type i = pos+1; i < par->size(); ++i)
  84 #endif
  85                 if (!Encodings::IsComposeChar_arabic(par->GetChar(i))) {
  86                         next_char = par->GetChar(i);
  87                         break;
  88                 }
  89
  90         if (Encodings::is_arabic(next_char)) {
  91                 if (Encodings::is_arabic(prev_char))
  92                         return Encodings::TransformChar(c, Encodings::FORM_MEDIAL);
  93                 else
  94                         return Encodings::TransformChar(c, Encodings::FORM_INITIAL);
  95         } else {
  96                 if (Encodings::is_arabic(prev_char))
  97                         return Encodings::TransformChar(c, Encodings::FORM_FINAL);
  98                 else
  99                         return Encodings::TransformChar(c, Encodings::FORM_ISOLATED);
 100         }
 101 }
 102
 103 // This is the comments that some of the warnings below refers to.
 104 // There are some issues in this file and I don't think they are
 105 // really related to the FIX_DOUBLE_SPACE patch. I'd rather think that
 106 // this is a problem that has been here almost from day one and that a
 107 // larger userbase with differenct access patters triggers the bad
 108 // behaviour. (segfaults.) What I think happen is: In several places
 109 // we store the paragraph in the current cursor and then moves the
 110 // cursor. This movement of the cursor will delete paragraph at the
 111 // old position if it is now empty. This will make the temporary
 112 // pointer to the old cursor paragraph invalid and dangerous to use.
 113 // And is some cases this will trigger a segfault. I have marked some
 114 // of the cases where this happens with a warning, but I am sure there
 115 // are others in this file and in text2.C. There is also a note in
 116 // Delete() that you should read. In Delete I store the paragraph->id
 117 // instead of a pointer to the paragraph. I am pretty sure this faulty
 118 // use of temporary pointers to paragraphs that might have gotten
 119 // invalidated (through a cursor movement) before they are used, are
 120 // the cause of the strange crashes we get reported often.
 121 //
 122 // It is very tiresom to change this code, especially when it is as
 123 // hard to read as it is. Help to fix all the cases where this is done
 124 // would be greately appreciated.
 125 //
 126 // Lgb
 127
 128 int LyXText::SingleWidth(BufferView * bview, LyXParagraph * par,
 129                          LyXParagraph::size_type pos) const
 130 {
 131         char const c = par->GetChar(pos);
 132         return SingleWidth(bview, par, pos, c);
 133 }
 134
 135
 136 int LyXText::SingleWidth(BufferView * bview, LyXParagraph * par,
 137                          LyXParagraph::size_type pos, char c) const
 138 {
 139         LyXFont const font = GetFont(bview->buffer(), par, pos);
 140
 141         // The most common case is handled first (Asger)
 142         if (IsPrintable(c)) {
 143                 if (font.language()->RightToLeft()) {
 144                         if (font.language()->lang() == "arabic" &&
 145                             (lyxrc.font_norm_type == LyXRC::ISO_8859_6_8 ||
 146                              lyxrc.font_norm_type == LyXRC::ISO_10646_1))
 147                                 if (Encodings::IsComposeChar_arabic(c))
 148                                         return 0;
 149                                 else
 150                                         c = TransformChar(c, par, pos);
 151                         else if (font.language()->lang() == "hebrew" &&
 152                                  Encodings::IsComposeChar_hebrew(c))
 153                                 return 0;
 154                 }
 155                 return lyxfont::width(c, font);
 156
 157         } else if (IsHfillChar(c)) {
 158                 return 3;       /* Because of the representation
 159                                  * as vertical lines */
 160 #ifndef NEW_INSETS
 161         } else if (c == LyXParagraph::META_FOOTNOTE ||
 162                    c == LyXParagraph::META_MARGIN ||
 163                    c == LyXParagraph::META_FIG ||
 164                    c == LyXParagraph::META_TAB ||
 165                    c == LyXParagraph::META_WIDE_FIG ||
 166                    c == LyXParagraph::META_WIDE_TAB ||
 167                    c == LyXParagraph::META_ALGORITHM) {
 168                 string fs;
 169                 switch (c) {
 170                 case LyXParagraph::META_MARGIN:
 171                         fs = "margin";
 172                         break;
 173                 case LyXParagraph::META_FIG:
 174                         fs = "fig";
 175                         break;
 176                 case LyXParagraph::META_TAB:
 177                         fs = "tab";
 178                         break;
 179                 case LyXParagraph::META_ALGORITHM:
 180                         fs = "alg";
 181                         break;
 182                 case LyXParagraph::META_WIDE_FIG:
 183                         fs = "wide-fig";
 184                         break;
 185                 case LyXParagraph::META_WIDE_TAB:
 186                         fs = "wide-tab";
 187                         break;
 188                 case LyXParagraph::META_FOOTNOTE:
 189                         fs = "foot";
 190                         break;
 191                 }
 192                 font.decSize();
 193                 font.decSize();
 194                 return lyxfont::width(fs, font);
 195 #endif
 196         } else if (c == LyXParagraph::META_INSET) {
 197                 Inset * tmpinset = par->GetInset(pos);
 198                 if (tmpinset) {
 199                         tmpinset->update(bview, font);
 200                         return tmpinset->width(bview, font);
 201                 } else
 202                         return 0;
 203
 204         } else if (IsSeparatorChar(c))
 205                 c = ' ';
 206         else if (IsNewlineChar(c))
 207                 c = 'n';
 208         return lyxfont::width(c, font);
 209 }
 210
 211
 212 // Returns the paragraph position of the last character in the specified row
 213 LyXParagraph::size_type LyXText::RowLast(Row const * row) const
 214 {
 215 #ifndef NEW_INSETS
 216         if (row->next() == 0)
 217                 return row->par()->Last() - 1;
 218         else if (row->next()->par() != row->par())
 219                 return row->par()->Last() - 1;
 220         else
 221                 return row->next()->pos() - 1;
 222 #else
 223         if (row->next() == 0)
 224                 return row->par()->size() - 1;
 225         else if (row->next()->par() != row->par())
 226                 return row->par()->size() - 1;
 227         else
 228                 return row->next()->pos() - 1;
 229 #endif
 230 }
 231
 232
 233 LyXParagraph::size_type LyXText::RowLastPrintable(Row const * row) const
 234 {
 235         LyXParagraph::size_type const last = RowLast(row);
 236         if (last >= row->pos()
 237             && row->next()
 238             && row->next()->par() == row->par()
 239             && row->par()->IsSeparator(last))
 240                 return last - 1;
 241         else
 242                 return last;
 243 }
 244
 245
 246 void LyXText::ComputeBidiTables(Buffer const * buf, Row * row) const
 247 {
 248         bidi_same_direction = true;
 249         if (!lyxrc.rtl_support) {
 250                 bidi_start = -1;
 251                 return;
 252         }
 253
 254         bidi_start = row->pos();
 255         bidi_end = RowLastPrintable(row);
 256
 257         if (bidi_start > bidi_end) {
 258                 bidi_start = -1;
 259                 return;
 260         }
 261
 262         if (bidi_end + 2 - bidi_start >
 263             static_cast<LyXParagraph::size_type>(log2vis_list.size())) {
 264                 LyXParagraph::size_type new_size =
 265                         (bidi_end + 2 - bidi_start < 500) ?
 266                         500 : 2 * (bidi_end + 2 - bidi_start);
 267                 log2vis_list.resize(new_size);
 268                 vis2log_list.resize(new_size);
 269                 bidi_levels.resize(new_size);
 270         }
 271
 272         vis2log_list[bidi_end + 1 - bidi_start] = -1;
 273         log2vis_list[bidi_end + 1 - bidi_start] = -1;
 274
 275         LyXParagraph::size_type stack[2];
 276         bool const rtl_par =
 277                 row->par()->getParLanguage(buf->params)->RightToLeft();
 278         int level = 0;
 279         bool rtl = false;
 280         bool rtl0 = false;
 281         LyXParagraph::size_type const main_body =
 282                 BeginningOfMainBody(buf, row->par());
 283
 284         for (LyXParagraph::size_type lpos = bidi_start;
 285              lpos <= bidi_end; ++lpos) {
 286                 bool is_space = row->par()->IsLineSeparator(lpos);
 287                 LyXParagraph::size_type const pos =
 288                         (is_space && lpos + 1 <= bidi_end &&
 289                          !row->par()->IsLineSeparator(lpos + 1) &&
 290                          !row->par()->IsNewline(lpos + 1))
 291                         ? lpos + 1 : lpos;
 292                 LyXFont font = row->par()->GetFontSettings(buf->params, pos);
 293                 if (pos != lpos && 0 < lpos && rtl0 && font.isRightToLeft() &&
 294                     font.number() == LyXFont::ON &&
 295                     row->par()->GetFontSettings(buf->params, lpos-1).number()
 296                     == LyXFont::ON) {
 297                         font = row->par()->GetFontSettings(buf->params, lpos);
 298                         is_space = false;
 299                 }
 300
 301
 302                 bool new_rtl = font.isVisibleRightToLeft();
 303                 bool new_rtl0 = font.isRightToLeft();
 304                 int new_level;
 305
 306                 if (lpos == main_body - 1
 307                     && row->pos() < main_body - 1
 308                     && is_space) {
 309                         new_level = (rtl_par) ? 1 : 0;
 310                         new_rtl = new_rtl0 = rtl_par;
 311                 } else if (new_rtl0)
 312                         new_level = (new_rtl) ? 1 : 2;
 313                 else
 314                         new_level = (rtl_par) ? 2 : 0;
 315
 316                 if (is_space && new_level >= level) {
 317                         new_level = level;
 318                         new_rtl = rtl;
 319                         new_rtl0 = rtl0;
 320                 }
 321
 322                 int new_level2 = new_level;
 323
 324                 if (level == new_level && rtl0 != new_rtl0) {
 325                         --new_level2;
 326                         log2vis_list[lpos - bidi_start] = (rtl) ? 1 : -1;
 327                 } else if (level < new_level) {
 328                         log2vis_list[lpos - bidi_start] =  (rtl) ? -1 : 1;
 329                         if (new_level > rtl_par)
 330                                 bidi_same_direction = false;
 331                 } else
 332                         log2vis_list[lpos - bidi_start] = (new_rtl) ? -1 : 1;
 333                 rtl = new_rtl;
 334                 rtl0 = new_rtl0;
 335                 bidi_levels[lpos - bidi_start] = new_level;
 336
 337                 while (level > new_level2) {
 338                         LyXParagraph::size_type old_lpos =
 339                                 stack[--level];
 340                         int delta = lpos - old_lpos - 1;
 341                         if (level % 2)
 342                                 delta = -delta;
 343                         log2vis_list[lpos - bidi_start] += delta;
 344                         log2vis_list[old_lpos - bidi_start] += delta;
 345                 }
 346                 while (level < new_level)
 347                         stack[level++] = lpos;
 348         }
 349
 350         while (level > 0) {
 351                 LyXParagraph::size_type const old_lpos = stack[--level];
 352                 int delta = bidi_end - old_lpos;
 353                 if (level % 2)
 354                         delta = -delta;
 355                 log2vis_list[old_lpos - bidi_start] += delta;
 356         }
 357
 358         LyXParagraph::size_type vpos = bidi_start - 1;
 359         for (LyXParagraph::size_type lpos = bidi_start;
 360              lpos <= bidi_end; ++lpos) {
 361                 vpos += log2vis_list[lpos - bidi_start];
 362                 vis2log_list[vpos - bidi_start] = lpos;
 363                 log2vis_list[lpos - bidi_start] = vpos;
 364         }
 365 }
 366
 367
 368 // This method requires a previous call to ComputeBidiTables()
 369 bool LyXText::IsBoundary(Buffer const * buf, LyXParagraph * par,
 370                          LyXParagraph::size_type pos) const
 371 {
 372         if (!lyxrc.rtl_support || pos == 0)
 373                 return false;
 374
 375         if (!bidi_InRange(pos - 1)) {
 376                 /// This can happen if pos is the first char of a row.
 377                 /// Returning false in this case is incorrect!
 378                 return false;
 379         }
 380
 381         bool const rtl = bidi_level(pos - 1) % 2;
 382         bool const rtl2 = bidi_InRange(pos)
 383                 ? bidi_level(pos) % 2
 384                 : par->isRightToLeftPar(buf->params);
 385         return rtl != rtl2;
 386 }
 387
 388
 389 bool LyXText::IsBoundary(Buffer const * buf, LyXParagraph * par,
 390                          LyXParagraph::size_type pos,
 391                          LyXFont const & font) const
 392 {
 393         if (!lyxrc.rtl_support)
 394                 return false;    // This is just for speedup
 395
 396         bool const rtl = font.isVisibleRightToLeft();
 397         bool const rtl2 = bidi_InRange(pos)
 398                 ? bidi_level(pos) % 2
 399                 : par->isRightToLeftPar(buf->params);
 400         return rtl != rtl2;
 401 }
 402
 403
 404 void LyXText::draw(BufferView * bview, Row const * row,
 405                    LyXParagraph::size_type & vpos,
 406                    int offset, float & x, bool cleared)
 407 {
 408         Painter & pain = bview->painter();
 409
 410         LyXParagraph::size_type pos = vis2log(vpos);
 411         char c = row->par()->GetChar(pos);
 412         float tmpx = x;
 413
 414         if (IsNewlineChar(c)) {
 415                 ++vpos;
 416                 // Draw end-of-line marker
 417                 LyXFont const font = GetFont(bview->buffer(), row->par(), pos);
 418                 int const wid = lyxfont::width('n', font);
 419                 int const asc = lyxfont::maxAscent(font);
 420                 int const y = offset + row->baseline();
 421                 int xp[3];
 422                 int yp[3];
 423
 424                 if (bidi_level(pos) % 2 == 0) {
 425                         xp[0] = int(x + wid * 0.375);
 426                         yp[0] = int(y - 0.875 * asc * 0.75);
 427
 428                         xp[1] = int(x);
 429                         yp[1] = int(y - 0.500 * asc * 0.75);
 430
 431                         xp[2] = int(x + wid * 0.375);
 432                         yp[2] = int(y - 0.125 * asc * 0.75);
 433
 434                         pain.lines(xp, yp, 3, LColor::eolmarker);
 435
 436                         xp[0] = int(x);
 437                         yp[0] = int(y - 0.500 * asc * 0.75);
 438
 439                         xp[1] = int(x + wid);
 440                         yp[1] = int(y - 0.500 * asc * 0.75);
 441
 442                         xp[2] = int(x + wid);
 443                         yp[2] = int(y - asc * 0.75);
 444
 445                         pain.lines(xp, yp, 3, LColor::eolmarker);
 446                 } else {
 447                         xp[0] = int(x + wid * 0.625);
 448                         yp[0] = int(y - 0.875 * asc * 0.75);
 449
 450                         xp[1] = int(x + wid);
 451                         yp[1] = int(y - 0.500 * asc * 0.75);
 452
 453                         xp[2] = int(x + wid * 0.625);
 454                         yp[2] = int(y - 0.125 * asc * 0.75);
 455
 456                         pain.lines(xp, yp, 3, LColor::eolmarker);
 457
 458                         xp[0] = int(x + wid);
 459                         yp[0] = int(y - 0.500 * asc * 0.75);
 460
 461                         xp[1] = int(x);
 462                         yp[1] = int(y - 0.500 * asc * 0.75);
 463
 464                         xp[2] = int(x);
 465                         yp[2] = int(y - asc * 0.75);
 466
 467                         pain.lines(xp, yp, 3, LColor::eolmarker);
 468                 }
 469                 x += wid;
 470                 return;
 471         }
 472
 473         LyXFont font = GetFont(bview->buffer(), row->par(), pos);
 474         LyXFont font2 = font;
 475 #ifndef NEW_INSETS
 476         if (c == LyXParagraph::META_FOOTNOTE
 477             || c == LyXParagraph::META_MARGIN
 478             || c == LyXParagraph::META_FIG
 479             || c == LyXParagraph::META_TAB
 480             || c == LyXParagraph::META_WIDE_FIG
 481             || c == LyXParagraph::META_WIDE_TAB
 482             || c == LyXParagraph::META_ALGORITHM) {
 483                 string fs;
 484                 switch (c) {
 485                 case LyXParagraph::META_MARGIN:
 486                         fs = "margin";
 487                         break;
 488                 case LyXParagraph::META_FIG:
 489                         fs = "fig";
 490                         break;
 491                 case LyXParagraph::META_TAB:
 492                         fs = "tab";
 493                         break;
 494                 case LyXParagraph::META_ALGORITHM:
 495                         fs = "alg";
 496                         break;
 497                 case LyXParagraph::META_WIDE_FIG:
 498                         fs = "wide-fig";
 499                         break;
 500                 case LyXParagraph::META_WIDE_TAB:
 501                         fs = "wide-tab";
 502                         break;
 503                 case LyXParagraph::META_FOOTNOTE:
 504                         fs = "foot";
 505                         break;
 506                 }
 507                 font.decSize();
 508                 font.decSize();
 509
 510                 // calculate the position of the footnotemark
 511                 int const y = (row->baseline() - lyxfont::maxAscent(font2)
 512                                + lyxfont::maxAscent(font));
 513
 514                 font.setColor(LColor::footnote);
 515
 516                 // draw it and set new x position
 517
 518                 pain.text(int(x), offset + y, fs, font);
 519                 x += lyxfont::width(fs, font);
 520                 pain.line(int(tmpx), offset + row->baseline(),
 521                           int(x), offset + row->baseline(),
 522                           LColor::footnote);
 523
 524                 ++vpos;
 525                 return;
 526         } else
 527 #endif
 528                 if (c == LyXParagraph::META_INSET) {
 529                 Inset * tmpinset = row->par()->GetInset(pos);
 530                 if (tmpinset) {
 531 //                      tmpinset->update(bview, font, false);
 532                         tmpinset->draw(bview, font, offset+row->baseline(), x,
 533                                        cleared);
 534 #ifdef SEEMS_TO_BE_NOT_NEEDED
 535                         if (status == CHANGED_IN_DRAW) {
 536                                 UpdateInset(bview, tmpinset);
 537                                 status = CHANGED_IN_DRAW;
 538                         }
 539 #endif
 540                 }
 541                 ++vpos;
 542
 543                 if (lyxrc.mark_foreign_language &&
 544                     font.language() != bview->buffer()->params.language) {
 545                         int const y = offset + row->height() - 1;
 546                         pain.line(int(tmpx), y, int(x), y,
 547                                   LColor::language);
 548                 }
 549
 550                 return;
 551         }
 552
 553         /* usual characters, no insets */
 554
 555         // Collect character that we can draw in one command
 556
 557         // This is dirty, but fast. Notice that it will never be too small.
 558         // For the record, I'll note that Microsoft Word has a limit
 559         // of 768 here. We have none :-) (Asger)
 560         // Ok. I am the first to admit that the use of std::string will be
 561         // a tiny bit slower than using a POD char array. However, I claim
 562         // that this slowdown is so small that it is close to inperceptive.
 563         // So IMHO we should go with the easier and clearer implementation.
 564         // And even if 1024 is a large number here it might overflow, string
 565         // will only overflow if the machine is out of memory...
 566         static string textstring;
 567         textstring = c;
 568         ++vpos;
 569
 570         LyXParagraph::size_type const last = RowLastPrintable(row);
 571
 572         if (font.language()->lang() == "hebrew") {
 573                 if (Encodings::IsComposeChar_hebrew(c)) {
 574                         int const width = lyxfont::width(c, font2);
 575                         int dx = 0;
 576                         for (LyXParagraph::size_type i = pos-1; i >= 0; --i) {
 577                                 c = row->par()->GetChar(i);
 578                                 if (!Encodings::IsComposeChar_hebrew(c)) {
 579                                         if (IsPrintableNonspace(c)) {
 580                                                 int const width2 =
 581                                                         SingleWidth(bview,
 582                                                                     row->par(),
 583                                                                     i, c);
 584                                                 dx = (c == 'ø' || c == 'ã') // dalet / resh
 585                                                         ? width2 - width : (width2 - width) / 2;
 586                                         }
 587                                         break;
 588                                 }
 589                         }
 590                         // Draw nikud
 591                         pain.text(int(x) + dx, offset + row->baseline(),
 592                                   textstring, font);
 593                 } else {
 594                         while (vpos <= last &&
 595                                (pos = vis2log(vpos)) >= 0
 596                                && IsPrintableNonspace(c = row->par()->GetChar(pos))
 597                                && !Encodings::IsComposeChar_hebrew(c)
 598                                && font2 == GetFont(bview->buffer(), row->par(), pos)) {
 599                                 textstring += c;
 600                                 ++vpos;
 601                         }
 602                         // Draw text and set the new x position
 603                         pain.text(int(x), offset + row->baseline(),
 604                                   textstring, font);
 605                         x += lyxfont::width(textstring, font);
 606                 }
 607         } else if (font.language()->lang() == "arabic" &&
 608                    (lyxrc.font_norm_type == LyXRC::ISO_8859_6_8 ||
 609                     lyxrc.font_norm_type == LyXRC::ISO_10646_1)) {
 610                 if (Encodings::IsComposeChar_arabic(c)) {
 611                         c = TransformChar(c, row->par(), pos);
 612                         textstring = c;
 613                         int const width = lyxfont::width(c, font2);
 614                         int dx = 0;
 615                         for (LyXParagraph::size_type i = pos-1; i >= 0; --i) {
 616                                 c = row->par()->GetChar(i);
 617                                 if (!Encodings::IsComposeChar_arabic(c)) {
 618                                         if (IsPrintableNonspace(c)) {
 619                                                 int const width2 =
 620                                                         SingleWidth(bview,
 621                                                                     row->par(),
 622                                                                     i, c);
 623                                                 dx = (width2 - width) / 2;
 624                                         }
 625                                         break;
 626                                 }
 627                         }
 628                         // Draw nikud
 629                         pain.text(int(x) + dx, offset + row->baseline(),
 630                                   textstring, font);
 631                 } else {
 632                         textstring = TransformChar(c, row->par(), pos);
 633                         while (vpos <= last &&
 634                                (pos = vis2log(vpos)) >= 0
 635                                && IsPrintableNonspace(c = row->par()->GetChar(pos))
 636                                && !Encodings::IsComposeChar_arabic(c)
 637                                && font2 == GetFont(bview->buffer(), row->par(), pos)) {
 638                                 c = TransformChar(c, row->par(), pos);
 639                                 textstring += c;
 640                                 ++vpos;
 641                         }
 642                         // Draw text and set the new x position
 643                         pain.text(int(x), offset + row->baseline(),
 644                                   textstring, font);
 645                         x += lyxfont::width(textstring, font);
 646                 }
 647         } else {
 648                 while (vpos <= last &&
 649                        (pos = vis2log(vpos)) >= 0
 650                        && IsPrintableNonspace(c = row->par()->GetChar(pos))
 651                        && font2 == GetFont(bview->buffer(), row->par(), pos)) {
 652                         textstring += c;
 653                         ++vpos;
 654                 }
 655                 // Draw text and set the new x position
 656                 pain.text(int(x), offset + row->baseline(), textstring, font);
 657                 x += lyxfont::width(textstring, font);
 658         }
 659
 660         if (lyxrc.mark_foreign_language &&
 661             font.language() != bview->buffer()->params.language) {
 662                 int const y = offset + row->height() - 1;
 663                 pain.line(int(tmpx), y, int(x), y,
 664                           LColor::language);
 665         }
 666
 667         // If we want ulem.sty support, drawing
 668         // routines should go here. (Asger)
 669         // Why shouldn't LyXFont::drawText handle it internally?
 670 }
 671
 672
 673 // Returns the left beginning of the text.
 674 // This information cannot be taken from the layouts-objekt, because in
 675 // LaTeX the beginning of the text fits in some cases (for example sections)
 676 // exactly the label-width.
 677 int LyXText::LeftMargin(BufferView * bview, Row const * row) const
 678 {
 679         LyXLayout const & layout =
 680                 textclasslist.Style(bview->buffer()->params.textclass,
 681                                     row->par()->GetLayout());
 682
 683         string parindent = layout.parindent;
 684
 685         int x = LYX_PAPER_MARGIN;
 686
 687         x += lyxfont::signedWidth(textclasslist
 688                                   .TextClass(bview->buffer()->params.textclass)
 689                                   .leftmargin(),
 690                                   textclasslist
 691                                   .TextClass(bview->buffer()->params.textclass)
 692                                   .defaultfont());
 693 #ifndef NEW_INSETS
 694         if (row->par()->footnoteflag == LyXParagraph::OPEN_FOOTNOTE)  {
 695                 LyXFont font(LyXFont::ALL_SANE);
 696                 font.setSize(LyXFont::SIZE_SMALL);
 697                 x += lyxfont::width("Mwide-figM", font)
 698                         + LYX_PAPER_MARGIN/2;
 699         }
 700 #endif
 701         // this is the way, LyX handles the LaTeX-Environments.
 702         // I have had this idea very late, so it seems to be a
 703         // later added hack and this is true
 704         if (!row->par()->GetDepth()) {
 705                 if (!row->par()->GetLayout()) {
 706                         // find the previous same level paragraph
 707 #ifndef NEW_INSETS
 708                         if (row->par()->FirstPhysicalPar()->previous()) {
 709 #else
 710                         if (row->par()->previous()) {
 711 #endif
 712                                 LyXParagraph * newpar = row->par()
 713                                         ->DepthHook(row->par()->GetDepth());
 714                                 if (newpar &&
 715                                     textclasslist.Style(bview->buffer()->params.textclass,
 716                                                         newpar->GetLayout())
 717                                     .nextnoindent)
 718                                         parindent.erase();
 719                         }
 720                 }
 721         } else {
 722                 // find the next level paragraph
 723
 724                 LyXParagraph * newpar =
 725                         row->par()->DepthHook(row->par()->GetDepth()-1);
 726
 727                 // make a corresponding row. Needed to call LeftMargin()
 728
 729                 // check wether it is a sufficent paragraph
 730                 if (newpar
 731 #ifndef NEW_INSETS
 732                     && newpar->footnoteflag == row->par()->footnoteflag
 733 #endif
 734                     && textclasslist
 735                         .Style(bview->buffer()->params.textclass,
 736                                newpar->GetLayout()).isEnvironment()) {
 737                         Row dummyrow;
 738                         dummyrow.par(newpar);
 739 #ifndef NEW_INSETS
 740                         dummyrow.pos(newpar->Last());
 741 #else
 742                         dummyrow.pos(newpar->size());
 743 #endif
 744                         x = LeftMargin(bview, &dummyrow);
 745                 } else {
 746                         // this is no longer an error, because this function
 747                         // is used to clear impossible depths after changing
 748                         // a layout. Since there is always a redo,
 749                         // LeftMargin() is always called
 750 #ifndef NEW_INSETS
 751                         row->par()->FirstPhysicalPar()->params.depth(0);
 752 #else
 753                         row->par()->params.depth(0);
 754 #endif
 755                 }
 756
 757                 if (newpar && !row->par()->GetLayout()) {
 758 #ifndef NEW_INSETS
 759                         if (newpar->FirstPhysicalPar()->params.noindent())
 760 #else
 761                         if (newpar->params.noindent())
 762 #endif
 763                                 parindent.erase();
 764                         else
 765                                 parindent = textclasslist
 766                                         .Style(bview->buffer()->params.textclass,
 767                                                newpar->GetLayout()).parindent;
 768                 }
 769
 770         }
 771
 772         LyXFont const labelfont = GetFont(bview->buffer(), row->par(), -2);
 773         switch (layout.margintype) {
 774         case MARGIN_DYNAMIC:
 775                 if (!layout.leftmargin.empty()) {
 776                         x += lyxfont::signedWidth(layout.leftmargin,
 777                                                   textclasslist
 778                                                   .TextClass(bview->buffer()->params.
 779                                                              textclass)
 780                                                   .defaultfont());
 781                 }
 782                 if (!row->par()->GetLabelstring().empty()) {
 783                         x += lyxfont::signedWidth(layout.labelindent,
 784                                                   labelfont);
 785                         x += lyxfont::width(row->par()->GetLabelstring(),
 786                                             labelfont);
 787                         x += lyxfont::width(layout.labelsep, labelfont);
 788                 }
 789                 break;
 790         case MARGIN_MANUAL:
 791                 x += lyxfont::signedWidth(layout.labelindent, labelfont);
 792                 if (row->pos() >= BeginningOfMainBody(bview->buffer(), row->par())) {
 793                         if (!row->par()->GetLabelWidthString().empty()) {
 794                                 x += lyxfont::width(row->par()->GetLabelWidthString(),
 795                                                labelfont);
 796                                 x += lyxfont::width(layout.labelsep, labelfont);
 797                         }
 798                 }
 799                 break;
 800         case MARGIN_STATIC:
 801                 x += lyxfont::signedWidth(layout.leftmargin, textclasslist.TextClass(bview->buffer()->params.textclass).defaultfont()) * 4
 802                         / (row->par()->GetDepth() + 4);
 803                 break;
 804         case MARGIN_FIRST_DYNAMIC:
 805                 if (layout.labeltype == LABEL_MANUAL) {
 806                         if (row->pos() >= BeginningOfMainBody(bview->buffer(), row->par())) {
 807                                 x += lyxfont::signedWidth(layout.leftmargin,
 808                                                           labelfont);
 809                         } else {
 810                                 x += lyxfont::signedWidth(layout.labelindent,
 811                                                           labelfont);
 812                         }
 813                 } else if (row->pos()
 814                            // Special case to fix problems with
 815                            // theorems (JMarc)
 816                            || (layout.labeltype == LABEL_STATIC
 817                                && layout.latextype == LATEX_ENVIRONMENT
 818                                && ! row->par()->IsFirstInSequence())) {
 819                         x += lyxfont::signedWidth(layout.leftmargin,
 820                                                   labelfont);
 821                 } else if (layout.labeltype != LABEL_TOP_ENVIRONMENT
 822                            && layout.labeltype != LABEL_BIBLIO
 823                            && layout.labeltype !=
 824                            LABEL_CENTERED_TOP_ENVIRONMENT) {
 825                         x += lyxfont::signedWidth(layout.labelindent,
 826                                                   labelfont);
 827                         x += lyxfont::width(layout.labelsep, labelfont);
 828                         x += lyxfont::width(row->par()->GetLabelstring(),
 829                                             labelfont);
 830                 }
 831                 break;
 832
 833         case MARGIN_RIGHT_ADDRESS_BOX:
 834         {
 835                 // ok, a terrible hack. The left margin depends on the widest
 836                 // row in this paragraph. Do not care about footnotes, they
 837                 // are *NOT* allowed in the LaTeX realisation of this layout.
 838
 839                 // find the first row of this paragraph
 840                 Row const * tmprow = row;
 841                 while (tmprow->previous()
 842                        && tmprow->previous()->par() == row->par())
 843                         tmprow = tmprow->previous();
 844
 845                 int minfill = tmprow->fill();
 846                 while (tmprow->next() && tmprow->next()->par() == row->par()) {
 847                         tmprow = tmprow->next();
 848                         if (tmprow->fill() < minfill)
 849                                 minfill = tmprow->fill();
 850                 }
 851
 852                 x += lyxfont::signedWidth(layout.leftmargin,
 853                                           textclasslist
 854                                           .TextClass(bview->buffer()->params.textclass)
 855                                           .defaultfont());
 856                 x += minfill;
 857         }
 858         break;
 859         }
 860 #ifndef NO_PEXTRA
 861         if ((workWidth(bview) > 0) &&
 862             (row->par()->params.pextraType() == LyXParagraph::PEXTRA_INDENT)) {
 863                 if (!row->par()->params.pextraWidthp().empty()) {
 864                         x += workWidth(bview) *
 865                                 lyx::atoi(row->par()->params.pextraWidthp()) / 100;
 866                 } else if (!row->par()->params.pextraWidth().empty()) {
 867                         int xx = VSpace(row->par()->params.pextraWidth()).inPixels(bview);
 868                         if (xx > workWidth(bview))
 869                                 xx = workWidth(bview) * 80 / 100;
 870                         x += xx;
 871                 } else { // should not happen
 872                         LyXFont font(LyXFont::ALL_SANE);
 873                         x += lyxfont::width("XXXXXX", font);
 874                 }
 875         }
 876 #endif
 877
 878         int align; // wrong type
 879 #ifndef NEW_INSETS
 880         if (row->par()->FirstPhysicalPar()->params.align() == LYX_ALIGN_LAYOUT)
 881                 align = layout.align;
 882         else
 883                 align = row->par()->FirstPhysicalPar()->params.align();
 884 #else
 885         if (row->par()->params.align() == LYX_ALIGN_LAYOUT)
 886                 align = layout.align;
 887         else
 888                 align = row->par()->params.align();
 889 #endif
 890         // set the correct parindent
 891         if (row->pos() == 0) {
 892                 if ((layout.labeltype == LABEL_NO_LABEL
 893                      || layout.labeltype == LABEL_TOP_ENVIRONMENT
 894                      || layout.labeltype == LABEL_CENTERED_TOP_ENVIRONMENT
 895                      || (layout.labeltype == LABEL_STATIC
 896                          && layout.latextype == LATEX_ENVIRONMENT
 897                          && ! row->par()->IsFirstInSequence()))
 898 #ifndef NEW_INSETS
 899                     && row->par() == row->par()->FirstPhysicalPar()
 900 #endif
 901                     && align == LYX_ALIGN_BLOCK
 902                     && !row->par()->params.noindent()
 903                     && (row->par()->layout ||
 904                         bview->buffer()->params.paragraph_separation ==
 905                         BufferParams::PARSEP_INDENT))
 906                         x += lyxfont::signedWidth(parindent,
 907                                                   textclasslist
 908                                                   .TextClass(bview->buffer()->params
 909                                                              .textclass)
 910                                                   .defaultfont());
 911                 else if (layout.labeltype == LABEL_BIBLIO) {
 912                         // ale970405 Right width for bibitems
 913                         x += bibitemMaxWidth(bview,textclasslist
 914                                              .TextClass(bview->buffer()->params
 915                                                         .textclass)
 916                                              .defaultfont());
 917                 }
 918         }
 919         return x;
 920 }
 921
 922
 923 int LyXText::RightMargin(Buffer const * buf, Row const * row) const
 924 {
 925         LyXLayout const & layout =
 926                 textclasslist.Style(buf->params.textclass,
 927                                     row->par()->GetLayout());
 928
 929         int x = LYX_PAPER_MARGIN
 930                 + lyxfont::signedWidth(textclasslist
 931                                        .TextClass(buf->params.textclass)
 932                                        .rightmargin(),
 933                                        textclasslist
 934                                        .TextClass(buf->params.textclass)
 935                                        .defaultfont());
 936
 937 #ifndef NEW_INSETS
 938         if (row->par()->footnoteflag == LyXParagraph::OPEN_FOOTNOTE)  {
 939                 x += LYX_PAPER_MARGIN / 2;
 940         }
 941 #endif
 942         // this is the way, LyX handles the LaTeX-Environments.
 943         // I have had this idea very late, so it seems to be a
 944         // later added hack and this is true
 945         if (row->par()->GetDepth()) {
 946                 // find the next level paragraph
 947
 948                 LyXParagraph * newpar = row->par();
 949
 950 #ifndef NEW_INSETS
 951                 do {
 952                         newpar = newpar->FirstPhysicalPar()->previous();
 953                         if (newpar)
 954                                 newpar = newpar->FirstPhysicalPar();
 955                 } while (newpar && newpar->GetDepth() >= row->par()->GetDepth()
 956                          && newpar->footnoteflag == row->par()->footnoteflag);
 957 #else
 958                 do {
 959                         newpar = newpar->previous();
 960                 } while (newpar
 961                          && newpar->GetDepth() >= row->par()->GetDepth());
 962 #endif
 963
 964                 // make a corresponding row. Needed to call LeftMargin()
 965
 966                 // check wether it is a sufficent paragraph
 967                 if (newpar
 968 #ifndef NEW_INSETS
 969                     && newpar->footnoteflag == row->par()->footnoteflag
 970 #endif
 971                     && textclasslist.Style(buf->params.textclass,
 972                                            newpar->GetLayout())
 973                        .isEnvironment()) {
 974                         Row dummyrow;
 975                         dummyrow.par(newpar);
 976                         dummyrow.pos(0);
 977                         x = RightMargin(buf, &dummyrow);
 978                 } else {
 979                         // this is no longer an error, because this function
 980                         // is used to clear impossible depths after changing
 981                         // a layout. Since there is always a redo,
 982                         // LeftMargin() is always called
 983 #ifndef NEW_INSETS
 984                         row->par()->FirstPhysicalPar()->params.depth(0);
 985 #else
 986                         row->par()->params.depth(0);
 987 #endif
 988                 }
 989         }
 990
 991         //lyxerr << "rightmargin: " << layout->rightmargin << endl;
 992         x += lyxfont::signedWidth(layout.rightmargin, textclasslist
 993                                   .TextClass(buf->params.textclass)
 994                                   .defaultfont()) * 4 / (row->par()->GetDepth()
 995                                                          + 4);
 996         return x;
 997 }
 998
 999
1000 int LyXText::LabelEnd(BufferView * bview, Row const * row) const
1001 {
1002         if (textclasslist.Style(bview->buffer()->params.textclass,
1003                                 row->par()->GetLayout()).margintype
1004             == MARGIN_MANUAL) {
1005                 Row tmprow;
1006                 tmprow = *row;
1007 #ifndef NEW_INSETS
1008                 tmprow.pos(row->par()->Last());
1009 #else
1010                 tmprow.pos(row->par()->size());
1011 #endif
1012                 return LeftMargin(bview, &tmprow);  /* just the beginning
1013                                                 of the main body */
1014         } else
1015                 return 0;  /* LabelEnd is only needed, if the
1016                               layout fills a flushleft
1017                               label. */
1018 }
1019
1020
1021 // get the next breakpoint in a given paragraph
1022 LyXParagraph::size_type
1023 LyXText::NextBreakPoint(BufferView * bview, Row const * row, int width) const
1024 {
1025         LyXParagraph * par = row->par();
1026
1027         if (width < 0)
1028 #ifndef NEW_INSETS
1029                 return par->Last();
1030 #else
1031                 return par->size();
1032 #endif
1033
1034         LyXParagraph::size_type const pos = row->pos();
1035
1036
1037         // position of the last possible breakpoint
1038         // -1 isn't a suitable value, but a flag
1039         LyXParagraph::size_type last_separator = -1;
1040         width -= RightMargin(bview->buffer(), row);
1041
1042         LyXParagraph::size_type const main_body =
1043                 BeginningOfMainBody(bview->buffer(), par);
1044         LyXLayout const & layout =
1045                 textclasslist.Style(bview->buffer()->params.textclass, par->GetLayout());
1046         LyXParagraph::size_type i = pos;
1047
1048         if (layout.margintype == MARGIN_RIGHT_ADDRESS_BOX) {
1049                 /* special code for right address boxes, only newlines count */
1050 #ifndef NEW_INSETS
1051                 while (i < par->Last()) {
1052 #else
1053                 while (i < par->size()) {
1054 #endif
1055                         if (par->IsNewline(i)) {
1056                                 last_separator = i;
1057 #ifndef NEW_INSETS
1058                                 i = par->Last() - 1; // this means break
1059 #else
1060                                 i = par->size() - 1; // this means break
1061 #endif
1062                                 //x = width;
1063                         } else if (par->GetChar(i) == LyXParagraph::META_INSET &&
1064                                    par->GetInset(i) && par->GetInset(i)->display()){
1065                                 par->GetInset(i)->display(false);
1066                         }
1067                         ++i;
1068                 }
1069         } else {
1070                 // Last position is an invariant
1071 #ifndef NEW_INSETS
1072                 LyXParagraph::size_type const last =
1073                         par->Last();
1074 #else
1075                 LyXParagraph::size_type const last =
1076                         par->size();
1077 #endif
1078                 // this is the usual handling
1079                 int x = LeftMargin(bview, row);
1080                 bool doitonetime = true;
1081                 while (doitonetime || ((x < width) && (i < last))) {
1082                         doitonetime = false;
1083                         char const c = par->GetChar(i);
1084                         if (IsNewlineChar(c)) {
1085                                 last_separator = i;
1086                                 x = width; // this means break
1087                         } else if (c == LyXParagraph::META_INSET &&
1088                                    par->GetInset(i)) {
1089
1090                                 // check wether a Display() inset is
1091                                 // valid here. if not, change it to
1092                                 // non-display
1093                                 if (par->GetInset(i)->display() &&
1094                                     (layout.isCommand() ||
1095                                      (layout.labeltype == LABEL_MANUAL
1096                                       && i < BeginningOfMainBody(bview->buffer(), par)))) {
1097                                         // display istn't allowd
1098                                         par->GetInset(i)->display(false);
1099                                         x += SingleWidth(bview, par, i, c);
1100                                 } else if (par->GetInset(i)->display() ||
1101                                          par->GetInset(i)->needFullRow()) {
1102                                         // So break the line here
1103                                         if (i == pos) {
1104                                                 if (pos < last-1) {
1105                                                         last_separator = i;
1106                                                         if (IsLineSeparatorChar(par->GetChar(i+1)))
1107                                                                 ++last_separator;
1108                                                 } else
1109                                                         last_separator = last; // to avoid extra rows
1110                                         } else
1111                                                 last_separator = i - 1;
1112                                         x = width;  // this means break
1113                                 } else {
1114 #if 0
1115                                         last_separator = i;
1116                                         x += width;
1117 #else
1118                                         x += SingleWidth(bview, par, i, c);
1119 #endif
1120                                 }
1121                         } else  {
1122                                 if (IsLineSeparatorChar(c))
1123                                         last_separator = i;
1124                                 x += SingleWidth(bview, par, i, c);
1125                         }
1126                         ++i;
1127                         if (i == main_body) {
1128                                 x += lyxfont::width(layout.labelsep,
1129                                                     GetFont(bview->buffer(), par, -2));
1130                                 if (par->IsLineSeparator(i - 1))
1131                                         x-= SingleWidth(bview, par, i - 1);
1132                                 int left_margin = LabelEnd(bview, row);
1133                                 if (x < left_margin)
1134                                         x = left_margin;
1135                         }
1136                 }
1137                 // end of paragraph is always a suitable separator
1138                 if (i == last && x < width)
1139                         last_separator = i;
1140         }
1141
1142         // well, if last_separator is still 0, the line isn't breakable.
1143         // don't care and cut simply at the end
1144         if (last_separator < 0) {
1145                 last_separator = i;
1146         }
1147
1148         // manual labels cannot be broken in LaTeX, do not care
1149         if (main_body && last_separator < main_body)
1150                 last_separator = main_body - 1;
1151
1152         return last_separator;
1153 }
1154
1155
1156 // returns the minimum space a row needs on the screen in pixel
1157 int LyXText::Fill(BufferView * bview, Row * row, int paper_width) const
1158 {
1159         if (paper_width < 0)
1160                 return 20;
1161
1162         int w;
1163         // get the pure distance
1164         LyXParagraph::size_type const last = RowLastPrintable(row);
1165
1166         // special handling of the right address boxes
1167         if (textclasslist.Style(bview->buffer()->params.textclass,
1168                                 row->par()->GetLayout()).margintype
1169             == MARGIN_RIGHT_ADDRESS_BOX) {
1170                 int const tmpfill = row->fill();
1171                 row->fill(0); // the minfill in MarginLeft()
1172                 w = LeftMargin(bview, row);
1173                 row->fill(tmpfill);
1174         } else
1175                 w = LeftMargin(bview, row);
1176
1177         LyXLayout const & layout = textclasslist.Style(bview->buffer()->params.textclass,
1178                                                        row->par()->GetLayout());
1179         LyXParagraph::size_type const main_body =
1180                 BeginningOfMainBody(bview->buffer(), row->par());
1181         LyXParagraph::size_type i = row->pos();
1182
1183         while (i <= last) {
1184                 if (main_body > 0 && i == main_body) {
1185                         w += lyxfont::width(layout.labelsep, GetFont(bview->buffer(), row->par(), -2));
1186                         if (row->par()->IsLineSeparator(i - 1))
1187                                 w -= SingleWidth(bview, row->par(), i - 1);
1188                         int left_margin = LabelEnd(bview, row);
1189                         if (w < left_margin)
1190                                 w = left_margin;
1191                 }
1192                 w += SingleWidth(bview, row->par(), i);
1193                 ++i;
1194         }
1195         if (main_body > 0 && main_body > last) {
1196                 w += lyxfont::width(layout.labelsep, GetFont(bview->buffer(), row->par(), -2));
1197                 if (last >= 0 && row->par()->IsLineSeparator(last))
1198                         w -= SingleWidth(bview, row->par(), last);
1199                 int const left_margin = LabelEnd(bview, row);
1200                 if (w < left_margin)
1201                         w = left_margin;
1202         }
1203
1204         int const fill = paper_width - w - RightMargin(bview->buffer(), row);
1205         if (fill < 0)
1206                 return 0;
1207         return fill;
1208 }
1209
1210
1211 // returns the minimum space a manual label needs on the screen in pixel
1212 int LyXText::LabelFill(BufferView * bview, Row const * row) const
1213 {
1214         LyXParagraph::size_type last = BeginningOfMainBody(bview->buffer(), row->par()) - 1;
1215         // -1 because a label ends either with a space that is in the label,
1216         // or with the beginning of a footnote that is outside the label.
1217
1218         // I don't understand this code in depth, but sometimes "last" is
1219         // less than 0 and this causes a crash. This fix seems to work
1220         // correctly, but I bet the real error is elsewhere.  The bug is
1221         // triggered when you have an open footnote in a paragraph
1222         // environment with a manual label. (Asger)
1223         if (last < 0) last = 0;
1224
1225         if (row->par()->IsLineSeparator(last)) /* a sepearator at this end
1226                                                 does not count */
1227                 --last;
1228
1229         int w = 0;
1230         int i = row->pos();
1231         while (i <= last) {
1232                 w += SingleWidth(bview, row->par(), i);
1233                 ++i;
1234         }
1235
1236         int fill = 0;
1237         if (!row->par()->params.labelWidthString().empty()) {
1238                 fill = max(lyxfont::width(row->par()->params.labelWidthString(),
1239                                           GetFont(bview->buffer(), row->par(), -2)) - w,
1240                            0);
1241         }
1242
1243         return fill;
1244 }
1245
1246
1247 // returns the number of separators in the specified row. The separator
1248 // on the very last column doesnt count
1249 int LyXText::NumberOfSeparators(Buffer const * buf, Row const * row) const
1250 {
1251         LyXParagraph::size_type const last = RowLast(row);
1252         LyXParagraph::size_type p =
1253                 max(row->pos(), BeginningOfMainBody(buf, row->par()));
1254         int n = 0;
1255         for (; p < last; ++p) {
1256                 if (row->par()->IsSeparator(p)) {
1257                         ++n;
1258                 }
1259         }
1260         return n;
1261 }
1262
1263
1264 // returns the number of hfills in the specified row. The LyX-Hfill is
1265 // a LaTeX \hfill so that the hfills at the beginning and at the end were
1266 // ignored. This is *MUCH* more usefull than not to ignore!
1267 int LyXText::NumberOfHfills(Buffer const * buf, Row const * row) const
1268 {
1269         LyXParagraph::size_type const last = RowLast(row);
1270         LyXParagraph::size_type first = row->pos();
1271         if (first) { /* hfill *DO* count at the beginning
1272                       * of paragraphs! */
1273                 while(first <= last && row->par()->IsHfill(first))
1274                         ++first;
1275         }
1276
1277         first = max(first, BeginningOfMainBody(buf, row->par()));
1278         int n = 0;
1279         for (int p = first; p <= last; ++p) { // last, because the end is ignored!
1280                 if (row->par()->IsHfill(p)) {
1281                         ++n;
1282                 }
1283         }
1284         return n;
1285 }
1286
1287
1288 // like NumberOfHfills, but only those in the manual label!
1289 int LyXText::NumberOfLabelHfills(Buffer const * buf, Row const * row) const
1290 {
1291         LyXParagraph::size_type last = RowLast(row);
1292         LyXParagraph::size_type first = row->pos();
1293         if (first) { /* hfill *DO* count at the beginning
1294                       * of paragraphs! */
1295                 while(first < last && row->par()->IsHfill(first))
1296                         ++first;
1297         }
1298
1299         last = min(last, BeginningOfMainBody(buf, row->par()));
1300         int n = 0;
1301         for (LyXParagraph::size_type p = first;
1302              p < last; ++p) {  // last, because the end is ignored!
1303                 if (row->par()->IsHfill(p)) {
1304                         ++n;
1305                 }
1306         }
1307         return n;
1308 }
1309
1310
1311 // returns true, if a expansion is needed.
1312 // Rules are given by LaTeX
1313 bool LyXText::HfillExpansion(Buffer const * buf, Row const * row_ptr,
1314                              LyXParagraph::size_type pos) const
1315 {
1316         // by the way, is it a hfill?
1317         if (!row_ptr->par()->IsHfill(pos))
1318                 return false;
1319
1320         // at the end of a row it does not count
1321         if (pos >= RowLast(row_ptr))
1322                 return false;
1323
1324         // at the beginning of a row it does not count, if it is not
1325         // the first row of a paragaph
1326         if (!row_ptr->pos())
1327                 return true;
1328
1329         // in some labels  it does not count
1330         if (textclasslist.Style(buf->params.textclass,
1331                                 row_ptr->par()->GetLayout()).margintype
1332             != MARGIN_MANUAL
1333             && pos < BeginningOfMainBody(buf, row_ptr->par()))
1334                 return false;
1335
1336         // if there is anything between the first char of the row and
1337         // the sepcified position that is not a newline and not a hfill,
1338         // the hfill will count, otherwise not
1339         LyXParagraph::size_type i = row_ptr->pos();
1340         while (i < pos && (row_ptr->par()->IsNewline(i)
1341                            || row_ptr->par()->IsHfill(i)))
1342                 ++i;
1343
1344         return i != pos;
1345 }
1346
1347
1348 void LyXText::SetHeightOfRow(BufferView * bview, Row * row_ptr) const
1349 {
1350     /* get the maximum ascent and the maximum descent */
1351    int asc = 0;
1352    int desc = 0;
1353    float layoutasc = 0;
1354    float layoutdesc = 0;
1355    float tmptop = 0;
1356    LyXFont tmpfont;
1357    Inset * tmpinset = 0;
1358
1359    /* this must not happen before the currentrow for clear reasons.
1360       so the trick is just to set the current row onto this row */
1361    int unused_y;
1362    GetRow(row_ptr->par(), row_ptr->pos(), unused_y);
1363
1364    /* ok , let us initialize the maxasc and maxdesc value.
1365     * This depends in LaTeX of the font of the last character
1366     * in the paragraph. The hack below is necessary because
1367     * of the possibility of open footnotes */
1368
1369    /* Correction: only the fontsize count. The other properties
1370       are taken from the layoutfont. Nicer on the screen :) */
1371 #ifndef NEW_INSETS
1372    LyXParagraph * par = row_ptr->par()->LastPhysicalPar();
1373    LyXParagraph * firstpar = row_ptr->par()->FirstPhysicalPar();
1374 #else
1375    LyXParagraph * par = row_ptr->par();
1376    LyXParagraph * firstpar = row_ptr->par();
1377 #endif
1378
1379    LyXLayout const & layout = textclasslist.Style(bview->buffer()->params.textclass,
1380                                                   firstpar->GetLayout());
1381
1382 #ifndef NEW_INSETS
1383    LyXFont font = GetFont(bview->buffer(), par, par->Last() - 1);
1384 #else
1385    LyXFont font = GetFont(bview->buffer(), par, par->size() - 1);
1386 #endif
1387    LyXFont::FONT_SIZE const size = font.size();
1388    font = GetFont(bview->buffer(), par, -1);
1389    font.setSize(size);
1390
1391    LyXFont labelfont = GetFont(bview->buffer(), par, -2);
1392
1393    float spacing_val = 1.0;
1394    if (!row_ptr->par()->params.spacing().isDefault()) {
1395            spacing_val = row_ptr->par()->params.spacing().getValue();
1396    } else {
1397            spacing_val = bview->buffer()->params.spacing.getValue();
1398    }
1399    //lyxerr << "spacing_val = " << spacing_val << endl;
1400
1401    int maxasc = int(lyxfont::maxAscent(font) *
1402                    layout.spacing.getValue() *
1403                    spacing_val);
1404    int maxdesc = int(lyxfont::maxDescent(font) *
1405                     layout.spacing.getValue() *
1406                     spacing_val);
1407    int const pos_end = RowLast(row_ptr);
1408    int labeladdon = 0;
1409    int maxwidth = 0;
1410
1411    // Check if any insets are larger
1412    for (int pos = row_ptr->pos(); pos <= pos_end; ++pos) {
1413            if (row_ptr->par()->GetChar(pos) == LyXParagraph::META_INSET) {
1414                    tmpfont = GetFont(bview->buffer(), row_ptr->par(), pos);
1415                    tmpinset = row_ptr->par()->GetInset(pos);
1416                    if (tmpinset) {
1417 //                         tmpinset->update(bview, tmpfont);
1418                            asc = tmpinset->ascent(bview, tmpfont);
1419                            desc = tmpinset->descent(bview, tmpfont);
1420                            maxwidth += tmpinset->width(bview, tmpfont);
1421                            maxasc = max(maxasc, asc);
1422                            maxdesc = max(maxdesc, desc);
1423                    }
1424            } else {
1425                    maxwidth += SingleWidth(bview, row_ptr->par(), pos);
1426            }
1427    }
1428
1429    // Check if any custom fonts are larger (Asger)
1430    // This is not completely correct, but we can live with the small,
1431    // cosmetic error for now.
1432    LyXFont::FONT_SIZE const maxsize =
1433            row_ptr->par()->HighestFontInRange(row_ptr->pos(),
1434                                               pos_end);
1435    if (maxsize > font.size()) {
1436         font.setSize(maxsize);
1437
1438         asc = lyxfont::maxAscent(font);
1439         desc = lyxfont::maxDescent(font);
1440         if (asc > maxasc)
1441                 maxasc = asc;
1442         if (desc > maxdesc)
1443                 maxdesc = desc;
1444    }
1445
1446    // This is nicer with box insets:
1447    ++maxasc;
1448    ++maxdesc;
1449
1450    row_ptr->ascent_of_text(maxasc);
1451
1452    // is it a top line?
1453    if (!row_ptr->pos() && (row_ptr->par() == firstpar)) {
1454
1455            // some parksips VERY EASY IMPLEMENTATION
1456       if (bview->buffer()->params.paragraph_separation ==
1457           BufferParams::PARSEP_SKIP) {
1458          if (layout.isParagraph()
1459              && firstpar->GetDepth() == 0
1460              && firstpar->previous())
1461             maxasc += bview->buffer()->params.getDefSkip().inPixels(bview);
1462          else if (firstpar->previous()
1463                   && textclasslist.Style(bview->buffer()->params.textclass,
1464                            firstpar->previous()->GetLayout()).isParagraph()
1465                   && firstpar->previous()->GetDepth() == 0)
1466            // is it right to use defskip here too? (AS)
1467            maxasc += bview->buffer()->params.getDefSkip().inPixels(bview);
1468       }
1469
1470       // the paper margins
1471 #ifndef NEW_INSETS
1472       if (!row_ptr->par()->previous_ && bv_owner)
1473          maxasc += LYX_PAPER_MARGIN;
1474 #else
1475       if (!row_ptr->par()->previous() && bv_owner)
1476          maxasc += LYX_PAPER_MARGIN;
1477 #endif
1478
1479       // add the vertical spaces, that the user added
1480       if (firstpar->params.spaceTop().kind() != VSpace::NONE)
1481          maxasc += int(firstpar->params.spaceTop().inPixels(bview));
1482
1483       // do not forget the DTP-lines!
1484       // there height depends on the font of the nearest character
1485       if (firstpar->params.lineTop())
1486          maxasc += 2 * lyxfont::ascent('x', GetFont(bview->buffer(),
1487                                                     firstpar, 0));
1488
1489       // and now the pagebreaks
1490       if (firstpar->params.pagebreakTop())
1491          maxasc += 3 * DefaultHeight();
1492
1493       // This is special code for the chapter, since the label of this
1494       // layout is printed in an extra row
1495       if (layout.labeltype == LABEL_COUNTER_CHAPTER
1496           && bview->buffer()->params.secnumdepth >= 0) {
1497               float spacing_val = 1.0;
1498               if (!row_ptr->par()->params.spacing().isDefault()) {
1499                       spacing_val = row_ptr->par()->params.spacing().getValue();
1500               } else {
1501                       spacing_val = bview->buffer()->params.spacing.getValue();
1502               }
1503
1504               labeladdon = int(lyxfont::maxDescent(labelfont) *
1505                                layout.spacing.getValue() *
1506                                spacing_val)
1507                       + int(lyxfont::maxAscent(labelfont) *
1508                             layout.spacing.getValue() *
1509                             spacing_val);
1510       }
1511
1512       // special code for the top label
1513       if ((layout.labeltype == LABEL_TOP_ENVIRONMENT
1514            || layout.labeltype == LABEL_BIBLIO
1515            || layout.labeltype == LABEL_CENTERED_TOP_ENVIRONMENT)
1516           && row_ptr->par()->IsFirstInSequence()
1517           && !row_ptr->par()->GetLabelstring().empty()) {
1518               float spacing_val = 1.0;
1519               if (!row_ptr->par()->params.spacing().isDefault()) {
1520                       spacing_val = row_ptr->par()->params.spacing().getValue();
1521               } else {
1522                       spacing_val = bview->buffer()->params.spacing.getValue();
1523               }
1524
1525               labeladdon = int(
1526                       (lyxfont::maxAscent(labelfont) *
1527                        layout.spacing.getValue() *
1528                        spacing_val)
1529                       +(lyxfont::maxDescent(labelfont) *
1530                         layout.spacing.getValue() *
1531                         spacing_val)
1532                       + layout.topsep * DefaultHeight()
1533                       + layout.labelbottomsep *  DefaultHeight());
1534       }
1535
1536       // and now the layout spaces, for example before and after a section,
1537       // or between the items of a itemize or enumerate environment
1538
1539       if (!firstpar->params.pagebreakTop()) {
1540          LyXParagraph * prev = row_ptr->par()->previous();
1541          if (prev)
1542             prev = row_ptr->par()->DepthHook(row_ptr->par()->GetDepth());
1543          if (prev && prev->GetLayout() == firstpar->GetLayout()
1544              && prev->GetDepth() == firstpar->GetDepth()
1545              && prev->GetLabelWidthString() == firstpar->GetLabelWidthString())
1546            {
1547               layoutasc = (layout.itemsep * DefaultHeight());
1548            }
1549          else if (row_ptr->previous()) {
1550             tmptop = layout.topsep;
1551
1552             if (row_ptr->previous()->par()->GetDepth() >= row_ptr->par()->GetDepth())
1553                tmptop -= textclasslist.Style(bview->buffer()->params.textclass,
1554                                              row_ptr->previous()->par()->
1555                                              GetLayout()).bottomsep;
1556
1557             if (tmptop > 0)
1558                layoutasc = (tmptop * DefaultHeight());
1559          }
1560          else if (row_ptr->par()->params.lineTop()) {
1561             tmptop = layout.topsep;
1562
1563             if (tmptop > 0)
1564                layoutasc = (tmptop * DefaultHeight());
1565          }
1566
1567          prev = row_ptr->par()->DepthHook(row_ptr->par()->GetDepth()-1);
1568          if (prev)  {
1569             maxasc += int(textclasslist.Style(bview->buffer()->params.textclass,
1570                                          prev->GetLayout()).parsep * DefaultHeight());
1571          }
1572          else {
1573                 if (firstpar->previous()
1574                     && firstpar->previous()->GetDepth() == 0
1575                     && firstpar->previous()->GetLayout() != firstpar->GetLayout()) {
1576                         // avoid parsep
1577                 }
1578             else if (firstpar->previous()){
1579                maxasc += int(layout.parsep * DefaultHeight());
1580             }
1581          }
1582       }
1583    }
1584
1585    // is it a bottom line?
1586    if (
1587 #ifndef NEW_INSETS
1588            row_ptr->par()->ParFromPos(RowLast(row_ptr) + 1) == par
1589 #else
1590            row_ptr->par() == par
1591 #endif
1592        && (!row_ptr->next() || row_ptr->next()->par() != row_ptr->par())) {
1593
1594            // the paper margins
1595 #ifndef NEW_INSETS
1596           if (!par->next_ && bv_owner)
1597             maxdesc += LYX_PAPER_MARGIN;
1598 #else
1599           if (!par->next() && bv_owner)
1600             maxdesc += LYX_PAPER_MARGIN;
1601 #endif
1602
1603           // add the vertical spaces, that the user added
1604           if (firstpar->params.spaceBottom().kind() != VSpace::NONE)
1605                   maxdesc += int(firstpar->params.spaceBottom().inPixels(bview));
1606
1607           // do not forget the DTP-lines!
1608           // there height depends on the font of the nearest character
1609 #ifndef NEW_INSETS
1610           if (firstpar->params.lineBottom())
1611                   maxdesc += 2 * lyxfont::ascent('x', GetFont(bview->buffer(),
1612                                                               par, par->Last() - 1));
1613 #else
1614           if (firstpar->params.lineBottom())
1615                   maxdesc += 2 * lyxfont::ascent('x',
1616                                                  GetFont(bview->buffer(),
1617                                                          par, par->size() - 1));
1618 #endif
1619
1620           // and now the pagebreaks
1621           if (firstpar->params.pagebreakBottom())
1622             maxdesc += 3 * DefaultHeight();
1623
1624           // and now the layout spaces, for example before and after
1625           // a section, or between the items of a itemize or enumerate
1626           // environment
1627           if (!firstpar->params.pagebreakBottom() && row_ptr->par()->next()) {
1628              LyXParagraph * nextpar = row_ptr->par()->next();
1629              LyXParagraph * comparepar = row_ptr->par();
1630              float usual = 0;
1631              float unusual = 0;
1632
1633              if (comparepar->GetDepth() > nextpar->GetDepth()) {
1634                 usual = (textclasslist.Style(bview->buffer()->params.textclass, comparepar->GetLayout()).bottomsep * DefaultHeight());
1635                 comparepar = comparepar->DepthHook(nextpar->GetDepth());
1636                 if (comparepar->GetLayout()!= nextpar->GetLayout()
1637                     || nextpar->GetLabelWidthString() !=
1638                         comparepar->GetLabelWidthString())
1639                   unusual = (textclasslist.Style(bview->buffer()->params.textclass, comparepar->GetLayout()).bottomsep * DefaultHeight());
1640
1641                 if (unusual > usual)
1642                   layoutdesc = unusual;
1643                 else
1644                   layoutdesc = usual;
1645              }
1646              else if (comparepar->GetDepth() ==  nextpar->GetDepth()) {
1647
1648                 if (comparepar->GetLayout()!= nextpar->GetLayout()
1649                     || nextpar->GetLabelWidthString() !=
1650                         comparepar->GetLabelWidthString())
1651                   layoutdesc = int(textclasslist.Style(bview->buffer()->params.textclass, comparepar->GetLayout()).bottomsep * DefaultHeight());
1652              }
1653           }
1654        }
1655
1656    // incalculate the layout spaces
1657    maxasc += int(layoutasc * 2 / (2 + firstpar->GetDepth()));
1658    maxdesc += int(layoutdesc * 2 / (2 + firstpar->GetDepth()));
1659
1660    // calculate the new height of the text
1661    height -= row_ptr->height();
1662
1663    row_ptr->height(maxasc + maxdesc + labeladdon);
1664    row_ptr->baseline(maxasc + labeladdon);
1665
1666    height += row_ptr->height();
1667    float x;
1668    float dummy;
1669    PrepareToPrint(bview, row_ptr, x, dummy, dummy, dummy, false);
1670    row_ptr->width(int(maxwidth + x));
1671    if (inset_owner) {
1672            Row * r = firstrow;
1673            width = max(0,workWidth(bview));
1674            while(r) {
1675                    if (r->width() > width)
1676                            width = r->width();
1677                    r = r->next();
1678            }
1679    }
1680 }
1681
1682
1683 /* Appends the implicit specified paragraph behind the specified row,
1684  * start at the implicit given position */
1685 void LyXText::AppendParagraph(BufferView * bview, Row * row) const
1686 {
1687    bool not_ready = true;
1688
1689    // The last character position of a paragraph is an invariant so we can
1690    // safely get it here. (Asger)
1691 #ifndef NEW_INSETS
1692    int const lastposition = row->par()->Last();
1693 #else
1694    int const lastposition = row->par()->size();
1695 #endif
1696    do {
1697       // Get the next breakpoint
1698       int z = NextBreakPoint(bview, row, workWidth(bview));
1699
1700       Row * tmprow = row;
1701
1702       // Insert the new row
1703       if (z < lastposition) {
1704          ++z;
1705          InsertRow(row, row->par(), z);
1706          row = row->next();
1707
1708          row->height(0);
1709       } else
1710          not_ready = false;
1711
1712       // Set the dimensions of the row
1713       tmprow->fill(Fill(bview, tmprow, workWidth(bview)));
1714       SetHeightOfRow(bview, tmprow);
1715
1716    } while (not_ready);
1717 }
1718
1719
1720 void LyXText::BreakAgain(BufferView * bview, Row * row) const
1721 {
1722    bool not_ready = true;
1723
1724    do  {
1725            // get the next breakpoint
1726         LyXParagraph::size_type z = NextBreakPoint(bview, row, workWidth(bview));
1727       Row * tmprow = row;
1728
1729 #ifndef NEW_INSETS
1730       if (z < row->par()->Last()) {
1731 #else
1732       if (z < row->par()->size()) {
1733 #endif
1734          if (!row->next() || (row->next() && row->next()->par() != row->par())) {
1735                  // insert a new row
1736             ++z;
1737             InsertRow(row, row->par(), z);
1738             row = row->next();
1739             row->height(0);
1740          } else  {
1741             row = row->next();
1742             ++z;
1743             if (row->pos() == z)
1744                     not_ready = false;     // the rest will not change
1745             else {
1746                row->pos(z);
1747             }
1748          }
1749       } else {
1750          /* if there are some rows too much, delete them */
1751          /* only if you broke the whole paragraph! */
1752          Row * tmprow2 = row;
1753          while (tmprow2->next() && tmprow2->next()->par() == row->par()) {
1754             tmprow2 = tmprow2->next();
1755          }
1756          while (tmprow2 != row) {
1757             tmprow2 = tmprow2->previous();
1758             RemoveRow(tmprow2->next());
1759          }
1760          not_ready = false;
1761       }
1762
1763       /* set the dimensions of the row */
1764       tmprow->fill(Fill(bview, tmprow, workWidth(bview)));
1765       SetHeightOfRow(bview, tmprow);
1766    } while (not_ready);
1767 }
1768
1769
1770 // this is just a little changed version of break again
1771 void LyXText::BreakAgainOneRow(BufferView * bview, Row * row)
1772 {
1773         // get the next breakpoint
1774         LyXParagraph::size_type z = NextBreakPoint(bview, row, workWidth(bview));
1775         Row * tmprow = row;
1776
1777 #ifndef NEW_INSETS
1778         if (z < row->par()->Last()) {
1779 #else
1780         if (z < row->par()->size()) {
1781 #endif
1782                 if (!row->next()
1783                     || (row->next() && row->next()->par() != row->par())) {
1784                         /* insert a new row */
1785                         ++z;
1786                         InsertRow(row, row->par(), z);
1787                         row = row->next();
1788                         row->height(0);
1789                 } else  {
1790                         row= row->next();
1791                         ++z;
1792                         if (row->pos() != z)
1793                                 row->pos(z);
1794                 }
1795         } else {
1796                 // if there are some rows too much, delete them
1797                 // only if you broke the whole paragraph!
1798                 Row * tmprow2 = row;
1799                 while (tmprow2->next()
1800                        && tmprow2->next()->par() == row->par()) {
1801                         tmprow2 = tmprow2->next();
1802                 }
1803                 while (tmprow2 != row) {
1804                         tmprow2 = tmprow2->previous();
1805                         RemoveRow(tmprow2->next());
1806                 }
1807         }
1808
1809         // set the dimensions of the row
1810         tmprow->fill(Fill(bview, tmprow, workWidth(bview)));
1811         SetHeightOfRow(bview, tmprow);
1812 }
1813
1814
1815 void LyXText::BreakParagraph(BufferView * bview, char keep_layout)
1816 {
1817    LyXLayout const & layout =
1818            textclasslist.Style(bview->buffer()->params.textclass,
1819                                cursor.par()->GetLayout());
1820
1821    // this is only allowed, if the current paragraph is not empty or caption
1822 #ifndef NEW_INSETS
1823    if ((cursor.par()->Last() <= 0
1824         && !cursor.par()->IsDummy())
1825        && layout.labeltype!= LABEL_SENSITIVE)
1826            return;
1827
1828    SetUndo(bview->buffer(), Undo::INSERT,
1829            cursor.par()->ParFromPos(cursor.pos())->previous_,
1830            cursor.par()->ParFromPos(cursor.pos())->next_);
1831 #else
1832    if ((cursor.par()->size() <= 0)
1833        && layout.labeltype!= LABEL_SENSITIVE)
1834            return;
1835
1836    SetUndo(bview->buffer(), Undo::INSERT,
1837            cursor.par()->previous(),
1838            cursor.par()->next());
1839 #endif
1840
1841    // Always break behind a space
1842    //
1843    // It is better to erase the space (Dekel)
1844 #ifndef NEW_INSETS
1845    if (cursor.pos() < cursor.par()->Last()
1846 #else
1847    if (cursor.pos() < cursor.par()->size()
1848 #endif
1849        && cursor.par()->IsLineSeparator(cursor.pos()))
1850            cursor.par()->Erase(cursor.pos());
1851            // cursor.pos(cursor.pos() + 1);
1852
1853    // break the paragraph
1854    if (keep_layout)
1855      keep_layout = 2;
1856    else
1857      keep_layout = layout.isEnvironment();
1858    cursor.par()->BreakParagraph(bview->buffer()->params, cursor.pos(),
1859                                 keep_layout);
1860
1861    // well this is the caption hack since one caption is really enough
1862    if (layout.labeltype == LABEL_SENSITIVE) {
1863      if (!cursor.pos())
1864              // set to standard-layout
1865 #ifndef NEW_INSETS
1866              cursor.par()->SetLayout(bview->buffer()->params, 0);
1867 #else
1868              cursor.par()->SetLayout(0);
1869 #endif
1870      else
1871              // set to standard-layout
1872 #ifndef NEW_INSETS
1873              cursor.par()->next()->SetLayout(bview->buffer()->params, 0);
1874 #else
1875              cursor.par()->next()->SetLayout(0);
1876 #endif
1877    }
1878
1879    /* if the cursor is at the beginning of a row without prior newline,
1880     * move one row up!
1881     * This touches only the screen-update. Otherwise we would may have
1882     * an empty row on the screen */
1883    if (cursor.pos() && !cursor.row()->par()->IsNewline(cursor.row()->pos() - 1)
1884        && cursor.row()->pos() == cursor.pos()) {
1885            CursorLeft(bview);
1886    }
1887
1888    status = LyXText::NEED_MORE_REFRESH;
1889    refresh_row = cursor.row();
1890    refresh_y = cursor.y() - cursor.row()->baseline();
1891
1892    // Do not forget the special right address boxes
1893    if (layout.margintype == MARGIN_RIGHT_ADDRESS_BOX) {
1894       while (refresh_row->previous() &&
1895              refresh_row->previous()->par() == refresh_row->par()) {
1896               refresh_row = refresh_row->previous();
1897               refresh_y -= refresh_row->height();
1898       }
1899    }
1900    RemoveParagraph(cursor.row());
1901
1902    // set the dimensions of the cursor row
1903    cursor.row()->fill(Fill(bview, cursor.row(), workWidth(bview)));
1904
1905    SetHeightOfRow(bview, cursor.row());
1906
1907 #ifndef NEW_INSETS
1908    while (cursor.par()->next()->Last()
1909 #else
1910    while (cursor.par()->next()->size()
1911 #endif
1912           && cursor.par()->next()->IsNewline(0))
1913            cursor.par()->next()->Erase(0);
1914
1915    InsertParagraph(bview, cursor.par()->next(), cursor.row());
1916
1917    UpdateCounters(bview, cursor.row()->previous());
1918
1919    /* This check is necessary. Otherwise the new empty paragraph will
1920     * be deleted automatically. And it is more friendly for the user! */
1921    if (cursor.pos())
1922            SetCursor(bview, cursor.par()->next(), 0);
1923    else
1924            SetCursor(bview, cursor.par(), 0);
1925
1926    if (cursor.row()->next())
1927            BreakAgain(bview, cursor.row()->next());
1928
1929    need_break_row = 0;
1930 }
1931
1932
1933 #ifndef NEW_INSETS
1934 void LyXText::OpenFootnote(BufferView * bview)
1935 {
1936    LyXParagraph * endpar,* tmppar;
1937    Row * row;
1938
1939    LyXParagraph * par = cursor.par()->ParFromPos(cursor.pos());
1940
1941    /* if there is no footnote in this paragraph, just return. */
1942    if (!par->next_
1943        || par->next_->footnoteflag != LyXParagraph::CLOSED_FOOTNOTE)
1944      return;
1945
1946    /* ok, move the cursor right before the footnote */
1947
1948    /* just a little faster than using CursorRight() */
1949    for (cursor.pos(0);
1950         cursor.par()->ParFromPos(cursor.pos()) != par;) {
1951            cursor.pos(cursor.pos() + 1);
1952    }
1953
1954    /* now the cursor is at the beginning of the physical par */
1955    SetCursor(bview, cursor.par(),
1956              cursor.pos() + cursor.par()->ParFromPos(cursor.pos())->size());
1957
1958    /* the cursor must be exactly before the footnote */
1959    par = cursor.par()->ParFromPos(cursor.pos());
1960
1961    status = LyXText::NEED_MORE_REFRESH;
1962    refresh_row = cursor.row();
1963    refresh_y = cursor.y() - cursor.row()->baseline();
1964
1965    tmppar = cursor.par();
1966    endpar = cursor.par()->next();
1967    row = cursor.row();
1968
1969    tmppar->OpenFootnote(cursor.pos());
1970    RemoveParagraph(row);
1971    /* set the dimensions of the cursor row */
1972    row->fill(Fill(bview, row, workWidth(bview)));
1973    SetHeightOfRow(bview, row);
1974    // CHECK See comment on top of text.C
1975    tmppar = tmppar->next();
1976
1977    while (tmppar != endpar) {
1978       if (tmppar) {
1979          InsertParagraph(bview, tmppar, row);
1980          while (row->next() && row->next()->par() == tmppar)
1981            row = row->next();
1982          tmppar = tmppar->next();
1983       }
1984    }
1985    SetCursor(bview, par->next_, 0);
1986    sel_cursor = cursor;
1987 }
1988 #endif
1989
1990
1991 // Just a macro to make some thing easier.
1992 void LyXText::RedoParagraph(BufferView * bview) const
1993 {
1994         ClearSelection(bview);
1995         RedoParagraphs(bview, cursor, cursor.par()->next());
1996         SetCursorIntern(bview, cursor.par(), cursor.pos());
1997 }
1998
1999
2000 /* insert a character, moves all the following breaks in the
2001  * same Paragraph one to the right and make a rebreak */
2002 void LyXText::InsertChar(BufferView * bview, char c)
2003 {
2004         SetUndo(bview->buffer(), Undo::INSERT,
2005 #ifndef NEW_INSETS
2006                 cursor.par()->ParFromPos(cursor.pos())->previous_,
2007                 cursor.par()->ParFromPos(cursor.pos())->next_
2008 #else
2009                 cursor.par()->previous(),
2010                 cursor.par()->next()
2011 #endif
2012                 );
2013
2014         // When the free-spacing option is set for the current layout,
2015         // disable the double-space checking
2016
2017         bool const freeSpacing =
2018                 textclasslist.Style(bview->buffer()->params.textclass,
2019                                cursor.row()->par()->GetLayout()).free_spacing;
2020
2021
2022         if (lyxrc.auto_number) {
2023                 static string const number_operators = "+-/*";
2024                 static string const number_unary_operators = "+-";
2025                 static string const number_seperators = ".,:";
2026
2027                 if (current_font.number() == LyXFont::ON) {
2028                         if (!isdigit(c) && !contains(number_operators, c) &&
2029                             !(contains(number_seperators, c) &&
2030                               cursor.pos() >= 1 &&
2031                               cursor.pos() < cursor.par()->size() &&
2032                               GetFont(bview->buffer(),
2033                                       cursor.par(),
2034                                       cursor.pos()).number() == LyXFont::ON &&
2035                               GetFont(bview->buffer(),
2036                                       cursor.par(),
2037                                       cursor.pos()-1).number() == LyXFont::ON)
2038                             )
2039                                 Number(bview); // Set current_font.number to OFF
2040                 } else if (isdigit(c) &&
2041                            real_current_font.isVisibleRightToLeft()) {
2042                         Number(bview); // Set current_font.number to ON
2043
2044                         if (cursor.pos() > 0) {
2045                                 char const c = cursor.par()->GetChar(cursor.pos() - 1);
2046                                 if (contains(number_unary_operators, c) &&
2047                                     (cursor.pos() == 1 ||
2048                                      cursor.par()->IsSeparator(cursor.pos() - 2) ||
2049                                      cursor.par()->IsNewline(cursor.pos() - 2) )
2050                                    ) {
2051                                         SetCharFont(bview->buffer(),
2052                                                     cursor.par(),
2053                                                     cursor.pos() - 1,
2054                                                     current_font);
2055                                 } else if (contains(number_seperators, c) &&
2056                                            cursor.pos() >= 2 &&
2057                                            GetFont(bview->buffer(),
2058                                                    cursor.par(),
2059                                                    cursor.pos()-2).number() == LyXFont::ON) {
2060                                         SetCharFont(bview->buffer(),
2061                                                     cursor.par(),
2062                                                     cursor.pos() - 1,
2063                                                     current_font);
2064                                 }
2065                         }
2066                 }
2067         }
2068
2069
2070         /* First check, if there will be two blanks together or a blank at
2071           the beginning of a paragraph.
2072           I decided to handle blanks like normal characters, the main
2073           difference are the special checks when calculating the row.fill
2074           (blank does not count at the end of a row) and the check here */
2075
2076         // The bug is triggered when we type in a description environment:
2077         // The current_font is not changed when we go from label to main text
2078         // and it should (along with realtmpfont) when we type the space.
2079         // CHECK There is a bug here! (Asger)
2080
2081         LyXFont realtmpfont = real_current_font;
2082         LyXFont rawtmpfont = current_font;  /* store the current font.
2083                                      * This is because of the use
2084                                      * of cursor movements. The moving
2085                                      * cursor would refresh the
2086                                      * current font */
2087
2088         // Get the font that is used to calculate the baselineskip
2089 #ifndef NEW_INSETS
2090         LyXParagraph::size_type const lastpos = cursor.par()->Last();
2091 #else
2092         LyXParagraph::size_type const lastpos = cursor.par()->size();
2093 #endif
2094         LyXFont rawparfont = cursor.par()->GetFontSettings(bview->buffer()->params,
2095                                                            lastpos - 1);
2096
2097         bool jumped_over_space = false;
2098
2099         if (!freeSpacing && IsLineSeparatorChar(c)) {
2100                 if ((cursor.pos() > 0
2101                      && cursor.par()->IsLineSeparator(cursor.pos() - 1))
2102                     || (cursor.pos() > 0
2103                         && cursor.par()->IsNewline(cursor.pos() - 1))
2104                     || (cursor.pos() == 0
2105 #ifndef NEW_INSETS
2106                         && !(cursor.par()->previous()
2107                              && cursor.par()->previous()->footnoteflag
2108                              == LyXParagraph::OPEN_FOOTNOTE)
2109 #endif
2110                             )) {
2111                         if (cursor.pos() == 0 )
2112                                 bview->owner()->message(_("You cannot insert a space at the beginning of a paragraph.  Please read the Tutorial."));
2113                         else
2114                                 bview->owner()->message(_("You cannot type two spaces this way.  Please read the Tutorial."));
2115                         charInserted();
2116                         return;
2117                 }
2118         } else if (IsNewlineChar(c)) {
2119 #ifndef NEW_INSETS
2120                 if (cursor.par()->FirstPhysicalPar() == cursor.par()
2121 #else
2122                 if (cursor.par() == cursor.par()
2123 #endif
2124                     && cursor.pos() <= BeginningOfMainBody(bview->buffer(), cursor.par())) {
2125                         charInserted();
2126                         return;
2127                 }
2128                 /* No newline at first position
2129                  * of a paragraph or behind labels.
2130                  * TeX does not allow that. */
2131
2132 #ifndef NEW_INSETS
2133                 if (cursor.pos() < cursor.par()->Last() &&
2134 #else
2135                 if (cursor.pos() < cursor.par()->size() &&
2136 #endif
2137                     cursor.par()->IsLineSeparator(cursor.pos()))
2138                         // newline always after a blank!
2139                         CursorRight(bview);
2140                 cursor.row()->fill(-1);        // to force a new break
2141         }
2142
2143         // the display inset stuff
2144         if (cursor.row()->par()->GetChar(cursor.row()->pos()) == LyXParagraph::META_INSET
2145             && cursor.row()->par()->GetInset(cursor.row()->pos())
2146             && (cursor.row()->par()->GetInset(cursor.row()->pos())->display() ||
2147                 cursor.row()->par()->GetInset(cursor.row()->pos())->needFullRow()))
2148                 cursor.row()->fill(-1); // to force a new break
2149
2150         // get the cursor row fist
2151         Row * row = cursor.row();
2152         int y = cursor.y() - row->baseline();
2153         if (c != LyXParagraph::META_INSET) /* Here case LyXText::InsertInset
2154                                             * already insertet the character */
2155                 cursor.par()->InsertChar(cursor.pos(), c);
2156         SetCharFont(bview->buffer(), cursor.par(), cursor.pos(), rawtmpfont);
2157
2158         if (!jumped_over_space) {
2159                 // refresh the positions
2160                 Row * tmprow = row;
2161                 while (tmprow->next() && tmprow->next()->par() == row->par()) {
2162                         tmprow = tmprow->next();
2163                         tmprow->pos(tmprow->pos() + 1);
2164                 }
2165         }
2166
2167         // Is there a break one row above
2168         if ((cursor.par()->IsLineSeparator(cursor.pos())
2169              || cursor.par()->IsNewline(cursor.pos())
2170              || cursor.row()->fill() == -1)
2171             && row->previous() && row->previous()->par() == row->par()) {
2172                 LyXParagraph::size_type z = NextBreakPoint(bview,
2173                                                            row->previous(),
2174                                                            workWidth(bview));
2175                 if (z >= row->pos()) {
2176                         row->pos(z + 1);
2177
2178                         // set the dimensions of the row above
2179                         row->previous()->fill(Fill(bview,
2180                                                    row->previous(),
2181                                                    workWidth(bview)));
2182
2183                         SetHeightOfRow(bview, row->previous());
2184
2185                         y -= row->previous()->height();
2186                         refresh_y = y;
2187                         refresh_row = row->previous();
2188                         status = LyXText::NEED_MORE_REFRESH;
2189
2190                         BreakAgainOneRow(bview, row);
2191
2192                         current_font = rawtmpfont;
2193                         real_current_font = realtmpfont;
2194                         SetCursor(bview, cursor.par(), cursor.pos() + 1,
2195                                   false, cursor.boundary());
2196                         // cursor MUST be in row now.
2197
2198                         if (row->next() && row->next()->par() == row->par())
2199                                 need_break_row = row->next();
2200                         else
2201                                 need_break_row = 0;
2202
2203                         // check, wether the last characters font has changed.
2204 #ifndef NEW_INSETS
2205                         if (cursor.pos() && cursor.pos() == cursor.par()->Last()
2206 #else
2207                         if (cursor.pos() && cursor.pos() == cursor.par()->size()
2208 #endif
2209                             && rawparfont != rawtmpfont)
2210                                 RedoHeightOfParagraph(bview, cursor);
2211
2212                         charInserted();
2213                         return;
2214                 }
2215         }
2216
2217         // recalculate the fill of the row
2218         if (row->fill() >= 0)  /* needed because a newline
2219                               * will set fill to -1. Otherwise
2220                               * we would not get a rebreak! */
2221                 row->fill(Fill(bview, row, workWidth(bview)));
2222         if (row->fill() < 0) {
2223                 refresh_y = y;
2224                 refresh_row = row;
2225                 refresh_x = cursor.x();
2226                 refresh_pos = cursor.pos();
2227                 status = LyXText::NEED_MORE_REFRESH;
2228                 BreakAgainOneRow(bview, row);
2229                 // will the cursor be in another row now?
2230                 if (RowLast(row) <= cursor.pos() + 1 && row->next()) {
2231                         if (row->next() && row->next()->par() == row->par())
2232                                 // this should always be true
2233                                 row = row->next();
2234                         BreakAgainOneRow(bview, row);
2235                 }
2236                 current_font = rawtmpfont;
2237                 real_current_font = realtmpfont;
2238
2239                 SetCursor(bview, cursor.par(), cursor.pos() + 1, false,
2240                           cursor.boundary());
2241                 if (IsBoundary(bview->buffer(), cursor.par(), cursor.pos())
2242                     != cursor.boundary())
2243                         SetCursor(bview, cursor.par(), cursor.pos(), false,
2244                           !cursor.boundary());
2245                 if (row->next() && row->next()->par() == row->par())
2246                         need_break_row = row->next();
2247                 else
2248                         need_break_row = 0;
2249         } else {
2250                 refresh_y = y;
2251                 refresh_x = cursor.x();
2252                 refresh_row = row;
2253                 refresh_pos = cursor.pos();
2254
2255                 int const tmpheight = row->height();
2256                 SetHeightOfRow(bview, row);
2257                 if (tmpheight == row->height())
2258                         status = LyXText::NEED_VERY_LITTLE_REFRESH;
2259                 else
2260                         status = LyXText::NEED_MORE_REFRESH;
2261
2262                 current_font = rawtmpfont;
2263                 real_current_font = realtmpfont;
2264                 SetCursor(bview, cursor.par(), cursor.pos() + 1, false,
2265                           cursor.boundary());
2266         }
2267
2268         // check, wether the last characters font has changed.
2269 #ifndef NEW_INSETS
2270         if (cursor.pos() && cursor.pos() == cursor.par()->Last()
2271 #else
2272         if (cursor.pos() && cursor.pos() == cursor.par()->size()
2273 #endif
2274             && rawparfont != rawtmpfont) {
2275                 RedoHeightOfParagraph(bview, cursor);
2276         } else {
2277                 // now the special right address boxes
2278                 if (textclasslist.Style(bview->buffer()->params.textclass,
2279                                    cursor.par()->GetLayout()).margintype
2280                     == MARGIN_RIGHT_ADDRESS_BOX) {
2281                         RedoDrawingOfParagraph(bview, cursor);
2282                 }
2283         }
2284
2285         charInserted();
2286 }
2287
2288
2289 void LyXText::charInserted()
2290 {
2291         // Here we could call FinishUndo for every 20 characters inserted.
2292         // This is from my experience how emacs does it.
2293         static unsigned int counter = 0;
2294         if (counter < 20) {
2295                 ++counter;
2296         } else {
2297                 FinishUndo();
2298                 counter = 0;
2299         }
2300 }
2301
2302
2303 void LyXText::PrepareToPrint(BufferView * bview,
2304                              Row * row, float & x,
2305                              float & fill_separator,
2306                              float & fill_hfill,
2307                              float & fill_label_hfill,
2308                              bool bidi) const
2309 {
2310         float nlh, ns;
2311
2312         float w = row->fill();
2313         fill_hfill = 0;
2314         fill_label_hfill = 0;
2315         fill_separator = 0;
2316         fill_label_hfill = 0;
2317
2318         bool const is_rtl =
2319                 row->par()->isRightToLeftPar(bview->buffer()->params);
2320         if (is_rtl) {
2321                 x = (workWidth(bview) > 0)
2322                         ? RightMargin(bview->buffer(), row) : 0;
2323 #ifndef NEW_INSETS
2324                 if (row->par()->footnoteflag == LyXParagraph::OPEN_FOOTNOTE) {
2325                         LyXFont font(LyXFont::ALL_SANE);
2326                         font.setSize(LyXFont::SIZE_SMALL);
2327                         x += lyxfont::width("Mwide-figM", font);
2328                 }
2329 #endif
2330         } else
2331                 x = (workWidth(bview) > 0) ? LeftMargin(bview, row) : 0;
2332
2333         // is there a manual margin with a manual label
2334         if (textclasslist.Style(bview->buffer()->params.textclass,
2335                            row->par()->GetLayout()).margintype == MARGIN_MANUAL
2336             && textclasslist.Style(bview->buffer()->params.textclass,
2337                               row->par()->GetLayout()).labeltype == LABEL_MANUAL) {
2338
2339                 /* one more since labels are left aligned */
2340                 nlh = NumberOfLabelHfills(bview->buffer(), row) + 1;
2341                 if (nlh && !row->par()->GetLabelWidthString().empty()) {
2342                         fill_label_hfill = LabelFill(bview, row) / nlh;
2343                 }
2344         }
2345
2346         // are there any hfills in the row?
2347         float const nh = NumberOfHfills(bview->buffer(), row);
2348
2349         if (nh)
2350           fill_hfill = w / nh;
2351         else  {
2352                 // is it block, flushleft or flushright?
2353                 // set x how you need it
2354         int align;
2355 #ifndef NEW_INSETS
2356         if (row->par()->FirstPhysicalPar()->params.align() == LYX_ALIGN_LAYOUT)
2357           align = textclasslist.Style(bview->buffer()->params.textclass, row->par()->GetLayout()).align;
2358         else
2359           align = row->par()->FirstPhysicalPar()->params.align();
2360 #else
2361         if (row->par()->params.align() == LYX_ALIGN_LAYOUT)
2362           align = textclasslist.Style(bview->buffer()->params.textclass, row->par()->GetLayout()).align;
2363         else
2364           align = row->par()->params.align();
2365 #endif
2366
2367         // center displayed insets
2368         Inset * inset;
2369            if (row->par()->GetChar(row->pos()) == LyXParagraph::META_INSET
2370                && (inset=row->par()->GetInset(row->pos()))
2371                && (inset->display())) // || (inset->scroll() < 0)))
2372              align = (inset->LyxCode() == Inset::MATHMACRO_CODE)
2373                      ? LYX_ALIGN_BLOCK : LYX_ALIGN_CENTER;
2374
2375            switch (align) {
2376             case LYX_ALIGN_BLOCK:
2377               ns = NumberOfSeparators(bview->buffer(), row);
2378               if (ns && row->next() && row->next()->par() == row->par() &&
2379                   !(row->next()->par()->IsNewline(row->next()->pos() - 1))
2380                   && !(row->next()->par()->GetChar(row->next()->pos()) == LyXParagraph::META_INSET
2381                        && row->next()->par()->GetInset(row->next()->pos())
2382                        && row->next()->par()->GetInset(row->next()->pos())->display())
2383                   )
2384                 fill_separator = w / ns;
2385               else if (is_rtl)
2386                 x += w;
2387               break;
2388             case LYX_ALIGN_RIGHT:
2389               x += w;
2390               break;
2391             case LYX_ALIGN_CENTER:
2392               x += w / 2;
2393               break;
2394            }
2395         }
2396         if (!bidi)
2397                 return;
2398
2399         ComputeBidiTables(bview->buffer(), row);
2400         if (is_rtl) {
2401                 LyXParagraph::size_type main_body =
2402                         BeginningOfMainBody(bview->buffer(), row->par());
2403                 LyXParagraph::size_type last = RowLast(row);
2404
2405                 if (main_body > 0 &&
2406                     (main_body-1 > last ||
2407                      !row->par()->IsLineSeparator(main_body-1))) {
2408                         LyXLayout const & layout =
2409                                 textclasslist.Style(bview->buffer()->params.textclass,
2410                                                     row->par()->GetLayout());
2411                         x += lyxfont::width(layout.labelsep,
2412                                             GetFont(bview->buffer(), row->par(), -2));
2413                         if (main_body-1 <= last)
2414                                 x += fill_label_hfill;
2415                 }
2416         }
2417 }
2418
2419 /* important for the screen */
2420
2421
2422 /* the cursor set functions have a special mechanism. When they
2423 * realize, that you left an empty paragraph, they will delete it.
2424 * They also delete the corresponding row */
2425
2426 void LyXText::CursorRightOneWord(BufferView * bview) const
2427 {
2428         // treat floats, HFills and Insets as words
2429         LyXCursor tmpcursor = cursor;
2430         // CHECK See comment on top of text.C
2431
2432 #ifndef NEW_INSETS
2433         if (tmpcursor.pos() == tmpcursor.par()->Last()
2434 #else
2435         if (tmpcursor.pos() == tmpcursor.par()->size()
2436 #endif
2437             && tmpcursor.par()->next()) {
2438                         tmpcursor.par(tmpcursor.par()->next());
2439                         tmpcursor.pos(0);
2440         } else {
2441                 int steps = 0;
2442
2443                 // Skip through initial nonword stuff.
2444 #ifndef NEW_INSETS
2445                 while (tmpcursor.pos() < tmpcursor.par()->Last() &&
2446 #else
2447                 while (tmpcursor.pos() < tmpcursor.par()->size() &&
2448 #endif
2449                         ! tmpcursor.par()->IsWord( tmpcursor.pos() ) )
2450                 {
2451                   //    printf("Current pos1 %d", tmpcursor.pos()) ;
2452                         tmpcursor.pos(tmpcursor.pos() + 1);
2453                         ++steps;
2454                 }
2455                 // Advance through word.
2456 #ifndef NEW_INSETS
2457                 while (tmpcursor.pos() < tmpcursor.par()->Last() &&
2458 #else
2459                 while (tmpcursor.pos() < tmpcursor.par()->size() &&
2460 #endif
2461                         tmpcursor.par()->IsWord( tmpcursor.pos() ) )
2462                 {
2463                   //     printf("Current pos2 %d", tmpcursor.pos()) ;
2464                         tmpcursor.pos(tmpcursor.pos() + 1);
2465                         ++steps;
2466                 }
2467         }
2468         SetCursor(bview, tmpcursor.par(), tmpcursor.pos());
2469 }
2470
2471
2472 void LyXText::CursorTab(BufferView * bview) const
2473 {
2474     LyXCursor tmpcursor = cursor;
2475 #ifndef NEW_INSETS
2476     while (tmpcursor.pos() < tmpcursor.par()->Last()
2477 #else
2478     while (tmpcursor.pos() < tmpcursor.par()->size()
2479 #endif
2480            && !tmpcursor.par()->IsNewline(tmpcursor.pos()))
2481         tmpcursor.pos(tmpcursor.pos() + 1);
2482
2483 #ifndef NEW_INSETS
2484     if (tmpcursor.pos() == tmpcursor.par()->Last()){
2485 #else
2486     if (tmpcursor.pos() == tmpcursor.par()->size()){
2487 #endif
2488         if (tmpcursor.par()->next()) {
2489             tmpcursor.par(tmpcursor.par()->next());
2490             tmpcursor.pos(0);
2491         }
2492     } else
2493         tmpcursor.pos(tmpcursor.pos() + 1);
2494     SetCursor(bview, tmpcursor.par(), tmpcursor.pos());
2495 }
2496
2497
2498 /* -------> Skip initial whitespace at end of word and move cursor to *start*
2499             of prior word, not to end of next prior word. */
2500
2501 void LyXText::CursorLeftOneWord(BufferView * bview)  const
2502 {
2503         // treat HFills, floats and Insets as words
2504         LyXCursor tmpcursor = cursor;
2505         while (tmpcursor.pos()
2506                && (tmpcursor.par()->IsSeparator(tmpcursor.pos() - 1)
2507                    || tmpcursor.par()->IsKomma(tmpcursor.pos() - 1))
2508                && !(tmpcursor.par()->IsHfill(tmpcursor.pos() - 1)
2509 #ifndef NEW_INSETS
2510                     || tmpcursor.par()->IsFloat(tmpcursor.pos() - 1)
2511 #endif
2512                     || tmpcursor.par()->IsInset(tmpcursor.pos() - 1)))
2513                 tmpcursor.pos(tmpcursor.pos() - 1);
2514
2515         if (tmpcursor.pos()
2516             && (tmpcursor.par()->IsInset(tmpcursor.pos() - 1)
2517 #ifndef NEW_INSETS
2518                 || tmpcursor.par()->IsFloat(tmpcursor.pos() - 1)
2519 #endif
2520                 || tmpcursor.par()->IsHfill(tmpcursor.pos() - 1))) {
2521                 tmpcursor.pos(tmpcursor.pos() - 1);
2522         } else if (!tmpcursor.pos()) {
2523                 if (tmpcursor.par()->previous()){
2524                         tmpcursor.par(tmpcursor.par()->previous());
2525 #ifndef NEW_INSETS
2526                         tmpcursor.pos(tmpcursor.par()->Last());
2527 #else
2528                         tmpcursor.pos(tmpcursor.par()->size());
2529 #endif
2530                 }
2531         } else {                // Here, tmpcursor != 0
2532                 while (tmpcursor.pos() > 0 &&
2533                        tmpcursor.par()->IsWord(tmpcursor.pos()-1) )
2534                         tmpcursor.pos(tmpcursor.pos() - 1);
2535         }
2536         SetCursor(bview, tmpcursor.par(), tmpcursor.pos());
2537 }
2538
2539 /* -------> Select current word. This depends on behaviour of CursorLeftOneWord(), so it is
2540                         patched as well. */
2541
2542 void LyXText::SelectWord(BufferView * bview)
2543 {
2544         // Move cursor to the beginning, when not already there.
2545         if (cursor.pos()
2546             && !cursor.par()->IsSeparator(cursor.pos()-1)
2547             && !cursor.par()->IsKomma(cursor.pos()-1) )
2548                 CursorLeftOneWord(bview);
2549
2550         // set the sel cursor
2551         sel_cursor = cursor;
2552
2553 #ifndef NEW_INSETS
2554         while (cursor.pos() < cursor.par()->Last()
2555 #else
2556         while (cursor.pos() < cursor.par()->size()
2557 #endif
2558                && !cursor.par()->IsSeparator(cursor.pos())
2559                && !cursor.par()->IsKomma(cursor.pos()) )
2560                 cursor.pos(cursor.pos() + 1);
2561         SetCursor(bview, cursor.par(), cursor.pos() );
2562
2563         // finally set the selection
2564         SetSelection(bview);
2565 }
2566
2567
2568 /* -------> Select the word currently under the cursor when:
2569                         1: no selection is currently set,
2570                         2: the cursor is not at the borders of the word. */
2571
2572 bool LyXText::SelectWordWhenUnderCursor(BufferView * bview)
2573 {
2574         if (!selection &&
2575 #ifndef NEW_INSETS
2576             cursor.pos() > 0 && cursor.pos() < cursor.par()->Last()
2577 #else
2578             cursor.pos() > 0 && cursor.pos() < cursor.par()->size()
2579 #endif
2580             && !cursor.par()->IsSeparator(cursor.pos())
2581             && !cursor.par()->IsKomma(cursor.pos())
2582             && !cursor.par()->IsSeparator(cursor.pos() -1)
2583             && !cursor.par()->IsKomma(cursor.pos() -1)) {
2584                 SelectWord(bview);
2585                 return true;
2586         }
2587         return false;
2588 }
2589
2590
2591 // This function is only used by the spellchecker for NextWord().
2592 // It doesn't handle LYX_ACCENTs and probably never will.
2593 string const LyXText::SelectNextWord(BufferView * bview,
2594                                      float & value) const
2595 {
2596         LyXParagraph * tmppar = cursor.par();
2597
2598         // If this is not the very first word, skip rest of
2599         // current word because we are probably in the middle
2600         // of a word if there is text here.
2601 #ifndef NEW_INSETS
2602         if (cursor.pos() || cursor.par()->previous_) {
2603                 while (cursor.pos() < cursor.par()->Last()
2604                        && cursor.par()->IsLetter(cursor.pos()))
2605                         cursor.pos(cursor.pos() + 1);
2606         }
2607 #else
2608         if (cursor.pos() || cursor.par()->previous()) {
2609                 while (cursor.pos() < cursor.par()->size()
2610                        && cursor.par()->IsLetter(cursor.pos()))
2611                         cursor.pos(cursor.pos() + 1);
2612         }
2613 #endif
2614
2615         // Now, skip until we have real text (will jump paragraphs)
2616 #ifndef NEW_INSETS
2617         while ((cursor.par()->Last() > cursor.pos()
2618 #else
2619         while ((cursor.par()->size() > cursor.pos()
2620 #endif
2621                 && (!cursor.par()->IsLetter(cursor.pos())
2622                     || cursor.par()->getFont(bview->buffer()->params, cursor.pos())
2623                     .latex() == LyXFont::ON))
2624 #ifndef NEW_INSETS
2625                || (cursor.par()->Last() == cursor.pos()
2626 #else
2627                || (cursor.par()->size() == cursor.pos()
2628 #endif
2629                    && cursor.par()->next())){
2630 #ifndef NEW_INSETS
2631                 if (cursor.pos() == cursor.par()->Last()) {
2632 #else
2633                 if (cursor.pos() == cursor.par()->size()) {
2634 #endif
2635                         cursor.par(cursor.par()->next());
2636                         cursor.pos(0);
2637                 } else
2638                         cursor.pos(cursor.pos() + 1);
2639         }
2640
2641         // Update the value if we changed paragraphs
2642         if (cursor.par() != tmppar){
2643                 SetCursor(bview, cursor.par(), cursor.pos());
2644                 value = float(cursor.y())/float(height);
2645         }
2646
2647         // Start the selection from here
2648         sel_cursor = cursor;
2649
2650         std::ostringstream latex;
2651
2652         // and find the end of the word
2653         // (optional hyphens are part of a word)
2654 #ifndef NEW_INSETS
2655         while (cursor.pos() < cursor.par()->Last()
2656 #else
2657         while (cursor.pos() < cursor.par()->size()
2658 #endif
2659                && (cursor.par()->IsLetter(cursor.pos()))
2660                    || (cursor.par()->GetChar(cursor.pos()) == LyXParagraph::META_INSET
2661                        && cursor.par()->GetInset(cursor.pos()) != 0
2662                        && cursor.par()->GetInset(cursor.pos())->Latex(bview->buffer(), latex, false, false) == 0
2663                        && latex.str() == "\\-"
2664                            ))
2665                 cursor.pos(cursor.pos() + 1);
2666
2667         // Finally, we copy the word to a string and return it
2668         string str;
2669         if (sel_cursor.pos() < cursor.pos()) {
2670                 LyXParagraph::size_type i;
2671                 for (i = sel_cursor.pos(); i < cursor.pos(); ++i) {
2672                         if (cursor.par()->GetChar(i) != LyXParagraph::META_INSET)
2673                                 str += cursor.par()->GetChar(i);
2674                 }
2675         }
2676         return str;
2677 }
2678
2679
2680 // This one is also only for the spellchecker
2681 void LyXText::SelectSelectedWord(BufferView * bview)
2682 {
2683         // move cursor to the beginning
2684         SetCursor(bview, sel_cursor.par(), sel_cursor.pos());
2685
2686         // set the sel cursor
2687         sel_cursor = cursor;
2688
2689         std::ostringstream latex;
2690
2691         // now find the end of the word
2692 #ifndef NEW_INSETS
2693         while (cursor.pos() < cursor.par()->Last()
2694 #else
2695         while (cursor.pos() < cursor.par()->size()
2696 #endif
2697                && (cursor.par()->IsLetter(cursor.pos())
2698                    || (cursor.par()->GetChar(cursor.pos()) == LyXParagraph::META_INSET
2699                        && cursor.par()->GetInset(cursor.pos()) != 0
2700                        && cursor.par()->GetInset(cursor.pos())->Latex(bview->buffer(), latex, false, false) == 0
2701                        && latex.str() == "\\-"
2702                            )))
2703                 cursor.pos(cursor.pos() + 1);
2704
2705         SetCursor(bview, cursor.par(), cursor.pos());
2706
2707         // finally set the selection
2708         SetSelection(bview);
2709 }
2710
2711
2712 /* -------> Delete from cursor up to the end of the current or next word. */
2713 void LyXText::DeleteWordForward(BufferView * bview)
2714 {
2715 #ifndef NEW_INSETS
2716         if (!cursor.par()->Last())
2717 #else
2718         if (!cursor.par()->size())
2719 #endif
2720                 CursorRight(bview);
2721         else {
2722                 LyXCursor tmpcursor = cursor;
2723                 tmpcursor.row(0); // ??
2724                 selection = true; // to avoid deletion
2725                 CursorRightOneWord(bview);
2726                 SetCursor(bview, tmpcursor, tmpcursor.par(), tmpcursor.pos());
2727                 sel_cursor = cursor;
2728                 cursor = tmpcursor;
2729                 SetSelection(bview);
2730
2731                 /* -----> Great, CutSelection() gets rid of multiple spaces. */
2732                 CutSelection(bview);
2733         }
2734 }
2735
2736
2737 /* -------> Delete from cursor to start of current or prior word. */
2738 void LyXText::DeleteWordBackward(BufferView * bview)
2739 {
2740 #ifndef NEW_INSETS
2741        if (!cursor.par()->Last())
2742 #else
2743        if (!cursor.par()->size())
2744 #endif
2745                CursorLeft(bview);
2746        else {
2747                LyXCursor tmpcursor = cursor;
2748                tmpcursor.row(0); // ??
2749                selection = true; // to avoid deletion
2750                CursorLeftOneWord(bview);
2751                SetCursor(bview, tmpcursor, tmpcursor.par(), tmpcursor.pos());
2752                sel_cursor = cursor;
2753                cursor = tmpcursor;
2754                SetSelection(bview);
2755                CutSelection(bview);
2756        }
2757 }
2758
2759
2760 /* -------> Kill to end of line. */
2761 void LyXText::DeleteLineForward(BufferView * bview)
2762 {
2763 #ifndef NEW_INSETS
2764         if (!cursor.par()->Last())
2765 #else
2766         if (!cursor.par()->size())
2767 #endif
2768                 // Paragraph is empty, so we just go to the right
2769                 CursorRight(bview);
2770         else {
2771                 LyXCursor tmpcursor = cursor;
2772                 // We can't store the row over a regular SetCursor
2773                 // so we set it to 0 and reset it afterwards.
2774                 tmpcursor.row(0); // ??
2775                 selection = true; // to avoid deletion
2776                 CursorEnd(bview);
2777                 SetCursor(bview, tmpcursor, tmpcursor.par(), tmpcursor.pos());
2778                 sel_cursor = cursor;
2779                 cursor = tmpcursor;
2780                 SetSelection(bview);
2781                 // What is this test for ??? (JMarc)
2782                 if (!selection) {
2783                         DeleteWordForward(bview);
2784                 } else {
2785                         CutSelection(bview);
2786                 }
2787         }
2788 }
2789
2790
2791 // Change the case of a word at cursor position.
2792 // This function directly manipulates LyXParagraph::text because there
2793 // is no LyXParagraph::SetChar currently. I did what I could to ensure
2794 // that it is correct. I guess part of it should be moved to
2795 // LyXParagraph, but it will have to change for 1.1 anyway. At least
2796 // it does not access outside of the allocated array as the older
2797 // version did. (JMarc)
2798 void LyXText::ChangeWordCase(BufferView * bview, LyXText::TextCase action)
2799 {
2800 #ifndef NEW_INSETS
2801         LyXParagraph * tmppar = cursor.par()->ParFromPos(cursor.pos());
2802
2803         SetUndo(bview->buffer(),Undo::FINISH,
2804                 tmppar->previous_, tmppar->next_);
2805
2806         LyXParagraph::size_type tmppos =
2807                 cursor.par()->PositionInParFromPos(cursor.pos());
2808 #else
2809         LyXParagraph * tmppar = cursor.par();
2810
2811         SetUndo(bview->buffer(),Undo::FINISH,
2812                 tmppar->previous(), tmppar->next());
2813
2814         LyXParagraph::size_type tmppos = cursor.pos();
2815 #endif
2816
2817         while (tmppos < tmppar->size()) {
2818                 unsigned char c = tmppar->GetChar(tmppos);
2819                 if (IsKommaChar(c) || IsLineSeparatorChar(c))
2820                         break;
2821                 if (c != LyXParagraph::META_INSET) {
2822                         switch (action) {
2823                         case text_lowercase:
2824                                 c = tolower(c);
2825                                 break;
2826                         case text_capitalization:
2827                                 c = toupper(c);
2828                                 action = text_lowercase;
2829                                 break;
2830                         case text_uppercase:
2831                                 c = toupper(c);
2832                                 break;
2833                         }
2834                 }
2835
2836                 //tmppar->text[tmppos] = c;
2837                 tmppar->SetChar(tmppos, c);
2838                 ++tmppos;
2839         }
2840         CheckParagraph(bview, tmppar, tmppos);
2841         CursorRightOneWord(bview);
2842 }
2843
2844
2845 void LyXText::Delete(BufferView * bview)
2846 {
2847         // this is a very easy implementation
2848
2849         LyXCursor old_cursor = cursor;
2850         int const old_cur_par_id = old_cursor.par()->id();
2851 #ifndef NEW_INSETS
2852         int const old_cur_par_prev_id = old_cursor.par()->previous_ ?
2853                 old_cursor.par()->previous_->id() : 0;
2854 #else
2855         int const old_cur_par_prev_id = old_cursor.par()->previous() ?
2856                 old_cursor.par()->previous()->id() : 0;
2857 #endif
2858
2859         // just move to the right
2860         CursorRight(bview);
2861
2862         // CHECK Look at the comment here.
2863         // This check is not very good...
2864         // The CursorRightIntern calls DeleteEmptyParagrapgMechanism
2865         // and that can very well delete the par or par->previous in
2866         // old_cursor. Will a solution where we compare paragraph id's
2867         //work better?
2868         if (
2869 #ifndef NEW_INSETS
2870                 (cursor.par()->previous_ ? cursor.par()->previous_->id() : 0)
2871 #else
2872                 (cursor.par()->previous() ? cursor.par()->previous()->id() : 0)
2873 #endif
2874             == old_cur_par_prev_id
2875             && cursor.par()->id() != old_cur_par_id)
2876                 return; // delete-empty-paragraph-mechanism has done it
2877
2878         // if you had success make a backspace
2879         if (old_cursor.par() != cursor.par() || old_cursor.pos() != cursor.pos()) {
2880                 LyXCursor tmpcursor = cursor;
2881                 cursor = old_cursor; // to make sure undo gets the right cursor position
2882                 SetUndo(bview->buffer(), Undo::DELETE,
2883 #ifndef NEW_INSETS
2884                         cursor.par()->ParFromPos(cursor.pos())->previous_,
2885                         cursor.par()->ParFromPos(cursor.pos())->next_
2886 #else
2887                         cursor.par()->previous(),
2888                         cursor.par()->next()
2889 #endif
2890                         );
2891                 cursor = tmpcursor;
2892                 Backspace(bview);
2893         }
2894 }
2895
2896
2897 void LyXText::Backspace(BufferView * bview)
2898 {
2899         // Get the font that is used to calculate the baselineskip
2900 #ifndef NEW_INSETS
2901         LyXParagraph::size_type lastpos = cursor.par()->Last();
2902 #else
2903         LyXParagraph::size_type lastpos = cursor.par()->size();
2904 #endif
2905         LyXFont rawparfont = cursor.par()->GetFontSettings(bview->buffer()->params,
2906                                                          lastpos - 1);
2907
2908         if (cursor.pos() == 0) {
2909                 // The cursor is at the beginning of a paragraph,
2910                 // so the the backspace will collapse two paragraphs into one.
2911
2912                 // we may paste some paragraphs
2913
2914                 // is it an empty paragraph?
2915
2916                 if ((lastpos == 0
2917                      || (lastpos == 1 && cursor.par()->IsSeparator(0)))
2918 #ifndef NEW_INSETS
2919                     && !(cursor.par()->next()
2920                          && cursor.par()->footnoteflag == LyXParagraph::NO_FOOTNOTE
2921                          && cursor.par()->next()->footnoteflag == LyXParagraph::OPEN_FOOTNOTE)
2922 #endif
2923                         ) {
2924                         // This is an empty paragraph and we delete it just by moving the cursor one step
2925                         // left and let the DeleteEmptyParagraphMechanism handle the actual deletion
2926                         // of the paragraph.
2927
2928 #ifndef NEW_INSETS
2929                         if (cursor.par()->previous_) {
2930                                 LyXParagraph * tmppar = cursor.par()->previous_->FirstPhysicalPar();
2931                                 if (cursor.par()->GetLayout() == tmppar->GetLayout()
2932                                     && cursor.par()->footnoteflag == tmppar->footnoteflag
2933 #else
2934                         if (cursor.par()->previous()) {
2935                                 LyXParagraph * tmppar = cursor.par()->previous();
2936                                 if (cursor.par()->GetLayout() == tmppar->GetLayout()
2937 #endif
2938                                     && cursor.par()->GetAlign() == tmppar->GetAlign()) {
2939                                         // Inherit bottom DTD from the paragraph below.
2940                                         // (the one we are deleting)
2941                                         tmppar->params.lineBottom(cursor.par()->params.lineBottom());
2942                                         tmppar->params.spaceBottom(cursor.par()->params.spaceBottom());
2943                                         tmppar->params.pagebreakBottom(cursor.par()->params.pagebreakBottom());
2944                                 }
2945
2946                                 CursorLeft(bview);
2947
2948                                 // the layout things can change the height of a row !
2949                                 int const tmpheight = cursor.row()->height();
2950                                 SetHeightOfRow(bview, cursor.row());
2951                                 if (cursor.row()->height() != tmpheight) {
2952                                         refresh_y = cursor.y() - cursor.row()->baseline();
2953                                         refresh_row = cursor.row();
2954                                         status = LyXText::NEED_MORE_REFRESH;
2955                                 }
2956                                 return;
2957                         }
2958                 }
2959
2960 #ifndef NEW_INSETS
2961                 if (cursor.par()->ParFromPos(cursor.pos())->previous_) {
2962                         SetUndo(bview->buffer(), Undo::DELETE,
2963                                 cursor.par()->ParFromPos(cursor.pos())->previous_->previous_,
2964                                 cursor.par()->ParFromPos(cursor.pos())->next_);
2965                 }
2966 #else
2967                 if (cursor.par()->previous()) {
2968                         SetUndo(bview->buffer(), Undo::DELETE,
2969                                 cursor.par()->previous()->previous(),
2970                                 cursor.par()->next());
2971                 }
2972 #endif
2973
2974                 LyXParagraph * tmppar = cursor.par();
2975                 Row * tmprow = cursor.row();
2976
2977                 // We used to do CursorLeftIntern() here, but it is
2978                 // not a good idea since it triggers the auto-delete
2979                 // mechanism. So we do a CursorLeftIntern()-lite,
2980                 // without the dreaded mechanism. (JMarc)
2981                 if (cursor.par()->previous()) {
2982                         // steps into the above paragraph.
2983 #ifndef NEW_INSETS
2984                         SetCursorIntern(bview, cursor.par()->previous(),
2985                                         cursor.par()->previous()->Last(), false);
2986 #else
2987                         SetCursorIntern(bview, cursor.par()->previous(),
2988                                         cursor.par()->previous()->size(),
2989                                         false);
2990 #endif
2991                 }
2992
2993                 /* Pasting is not allowed, if the paragraphs have different
2994                    layout. I think it is a real bug of all other
2995                    word processors to allow it. It confuses the user.
2996                    Even so with a footnote paragraph and a non-footnote
2997                    paragraph. I will not allow pasting in this case,
2998                    because the user would be confused if the footnote behaves
2999                    different wether it is open or closed.
3000
3001                    Correction: Pasting is always allowed with standard-layout
3002                 */
3003                 if (cursor.par() != tmppar
3004                     && (cursor.par()->GetLayout() == tmppar->GetLayout()
3005                         || tmppar->GetLayout() == 0 /*standard*/)
3006 #ifndef NEW_INSETS
3007                     && cursor.par()->footnoteflag == tmppar->footnoteflag
3008 #endif
3009                     && cursor.par()->GetAlign() == tmppar->GetAlign()) {
3010
3011                         RemoveParagraph(tmprow);
3012                         RemoveRow(tmprow);
3013                         cursor.par()->PasteParagraph(bview->buffer()->params);
3014
3015                         if (!cursor.pos() || !cursor.par()->IsSeparator(cursor.pos() - 1))
3016                                 ; //cursor.par()->InsertChar(cursor.pos(), ' ');
3017                         // strangely enough it seems that commenting out the line above removes
3018                         // most or all of the segfaults. I will however also try to move the
3019                         // two Remove... lines in front of the PasteParagraph too.
3020                         else
3021                                 if (cursor.pos())
3022                                         cursor.pos(cursor.pos() - 1);
3023
3024                         status = LyXText::NEED_MORE_REFRESH;
3025                         refresh_row = cursor.row();
3026                         refresh_y = cursor.y() - cursor.row()->baseline();
3027
3028                         // remove the lost paragraph
3029                         // This one is not safe, since the paragraph that the tmprow and the
3030                         // following rows belong to has been deleted by the PasteParagraph
3031                         // above. The question is... could this be moved in front of the
3032                         // PasteParagraph?
3033                         //RemoveParagraph(tmprow);
3034                         //RemoveRow(tmprow);
3035
3036                         // This rebuilds the rows.
3037                         AppendParagraph(bview, cursor.row());
3038                         UpdateCounters(bview, cursor.row());
3039
3040                         // the row may have changed, block, hfills etc.
3041                         SetCursor(bview, cursor.par(), cursor.pos(), false);
3042                 }
3043         } else {
3044                 /* this is the code for a normal backspace, not pasting
3045                  * any paragraphs */
3046                 SetUndo(bview->buffer(), Undo::DELETE,
3047 #ifndef NEW_INSETS
3048                         cursor.par()->ParFromPos(cursor.pos())->previous_,
3049                         cursor.par()->ParFromPos(cursor.pos())->next_
3050 #else
3051                         cursor.par()->previous(),
3052                         cursor.par()->next()
3053 #endif
3054                         );
3055                 // We used to do CursorLeftIntern() here, but it is
3056                 // not a good idea since it triggers the auto-delete
3057                 // mechanism. So we do a CursorLeftIntern()-lite,
3058                 // without the dreaded mechanism. (JMarc)
3059                 SetCursorIntern(bview, cursor.par(), cursor.pos()- 1,
3060                                 false, cursor.boundary());
3061
3062                 // some insets are undeletable here
3063                 if (cursor.par()->GetChar(cursor.pos()) == LyXParagraph::META_INSET) {
3064                         if (!cursor.par()->GetInset(cursor.pos())->Deletable())
3065                                 return;
3066                         // force complete redo when erasing display insets
3067                         // this is a cruel method but safe..... Matthias
3068                         if (cursor.par()->GetInset(cursor.pos())->display() ||
3069                             cursor.par()->GetInset(cursor.pos())->needFullRow()) {
3070                                 cursor.par()->Erase(cursor.pos());
3071                                 RedoParagraph(bview);
3072                                 return;
3073                         }
3074                 }
3075
3076                 Row * row = cursor.row();
3077                 int y = cursor.y() - row->baseline();
3078                 LyXParagraph::size_type z;
3079                 /* remember that a space at the end of a row doesnt count
3080                  * when calculating the fill */
3081                 if (cursor.pos() < RowLast(row) ||
3082                     !cursor.par()->IsLineSeparator(cursor.pos())) {
3083                         row->fill(row->fill() + SingleWidth(bview,
3084                                                             cursor.par(),
3085                                                             cursor.pos()));
3086                 }
3087
3088                 /* some special code when deleting a newline. This is similar
3089                  * to the behavior when pasting paragraphs */
3090                 if (cursor.pos() && cursor.par()->IsNewline(cursor.pos())) {
3091                         cursor.par()->Erase(cursor.pos());
3092                         // refresh the positions
3093                         Row * tmprow = row;
3094                         while (tmprow->next() && tmprow->next()->par() == row->par()) {
3095                                 tmprow = tmprow->next();
3096                                 tmprow->pos(tmprow->pos() - 1);
3097                         }
3098                         if (cursor.par()->IsLineSeparator(cursor.pos() - 1))
3099                                 cursor.pos(cursor.pos() - 1);
3100
3101 #ifndef NEW_INSETS
3102                         if (cursor.pos() < cursor.par()->Last()
3103                             && !cursor.par()->IsSeparator(cursor.pos())) {
3104 #else
3105                         if (cursor.pos() < cursor.par()->size()
3106                             && !cursor.par()->IsSeparator(cursor.pos())) {
3107 #endif
3108                                 cursor.par()->InsertChar(cursor.pos(), ' ');
3109                                 SetCharFont(bview->buffer(), cursor.par(),
3110                                             cursor.pos(), current_font);
3111                                 // refresh the positions
3112                                 tmprow = row;
3113                                 while (tmprow->next() && tmprow->next()->par() == row->par()) {
3114                                         tmprow = tmprow->next();
3115                                         tmprow->pos(tmprow->pos() + 1);
3116                                 }
3117                         }
3118                 } else {
3119                         cursor.par()->Erase(cursor.pos());
3120
3121                         // refresh the positions
3122                         Row * tmprow = row;
3123                         while (tmprow->next()
3124                                && tmprow->next()->par() == row->par()) {
3125                                 tmprow = tmprow->next();
3126                                 tmprow->pos(tmprow->pos() - 1);
3127                         }
3128
3129                         // delete newlines at the beginning of paragraphs
3130 #ifndef NEW_INSETS
3131                         while (cursor.par()->Last() &&
3132 #else
3133                         while (cursor.par()->size() &&
3134 #endif
3135                                cursor.par()->IsNewline(cursor.pos()) &&
3136                                cursor.pos() == BeginningOfMainBody(bview->buffer(),
3137                                                                    cursor.par())) {
3138                                 cursor.par()->Erase(cursor.pos());
3139                                 // refresh the positions
3140                                 tmprow = row;
3141                                 while (tmprow->next() &&
3142                                        tmprow->next()->par() == row->par()) {
3143                                         tmprow = tmprow->next();
3144                                         tmprow->pos(tmprow->pos() - 1);
3145                                 }
3146                         }
3147                 }
3148
3149                 // is there a break one row above
3150                 if (row->previous() && row->previous()->par() == row->par()) {
3151                         z = NextBreakPoint(bview, row->previous(),
3152                                            workWidth(bview));
3153                         if (z >= row->pos()) {
3154                                 row->pos(z + 1);
3155
3156                                 Row * tmprow = row->previous();
3157
3158                                 // maybe the current row is now empty
3159 #ifndef NEW_INSETS
3160                                 if (row->pos() >= row->par()->Last()) {
3161 #else
3162                                 if (row->pos() >= row->par()->size()) {
3163 #endif
3164                                         // remove it
3165                                         RemoveRow(row);
3166                                         need_break_row = 0;
3167                                 } else {
3168                                         BreakAgainOneRow(bview, row);
3169                                         if (row->next() && row->next()->par() == row->par())
3170                                                 need_break_row = row->next();
3171                                         else
3172                                                 need_break_row = 0;
3173                                 }
3174
3175                                 // set the dimensions of the row above
3176                                 y -= tmprow->height();
3177                                 tmprow->fill(Fill(bview, tmprow,
3178                                                   workWidth(bview)));
3179                                 SetHeightOfRow(bview, tmprow);
3180
3181                                 refresh_y = y;
3182                                 refresh_row = tmprow;
3183                                 status = LyXText::NEED_MORE_REFRESH;
3184                                 SetCursor(bview, cursor.par(), cursor.pos(),
3185                                           false, cursor.boundary());
3186                                 //current_font = rawtmpfont;
3187                                 //real_current_font = realtmpfont;
3188                                 // check, whether the last character's font has changed.
3189 #ifndef NEW_INSETS
3190                                 if (rawparfont !=
3191                                     cursor.par()->GetFontSettings(bview->buffer()->params,
3192                                                                   cursor.par()->Last() - 1))
3193 #else
3194                                 if (rawparfont !=
3195                                     cursor.par()->GetFontSettings(bview->buffer()->params,
3196                                                                   cursor.par()->size() - 1))
3197 #endif
3198                                         RedoHeightOfParagraph(bview, cursor);
3199                                 return;
3200                         }
3201                 }
3202
3203                 // break the cursor row again
3204                 if (row->next() && row->next()->par() == row->par() &&
3205 #ifndef NEW_INSETS
3206                     (RowLast(row) == row->par()->Last() - 1 ||
3207 #else
3208                     (RowLast(row) == row->par()->size() - 1 ||
3209 #endif
3210                      NextBreakPoint(bview, row, workWidth(bview)) != RowLast(row))) {
3211
3212                         /* it can happen that a paragraph loses one row
3213                          * without a real breakup. This is when a word
3214                          * is to long to be broken. Well, I don t care this
3215                          * hack ;-) */
3216 #ifndef NEW_INSETS
3217                         if (RowLast(row) == row->par()->Last() - 1)
3218 #else
3219                         if (RowLast(row) == row->par()->size() - 1)
3220 #endif
3221                                 RemoveRow(row->next());
3222
3223                         refresh_y = y;
3224                         refresh_row = row;
3225                         status = LyXText::NEED_MORE_REFRESH;
3226
3227                         BreakAgainOneRow(bview, row);
3228                         // will the cursor be in another row now?
3229                         if (row->next() && row->next()->par() == row->par() &&
3230                             RowLast(row) <= cursor.pos()) {
3231                                 row = row->next();
3232                                 BreakAgainOneRow(bview, row);
3233                         }
3234
3235                         SetCursor(bview, cursor.par(), cursor.pos(), false, cursor.boundary());
3236
3237                         if (row->next() && row->next()->par() == row->par())
3238                                 need_break_row = row->next();
3239                         else
3240                                 need_break_row = 0;
3241                 } else  {
3242                         // set the dimensions of the row
3243                         row->fill(Fill(bview, row, workWidth(bview)));
3244                         int const tmpheight = row->height();
3245                         SetHeightOfRow(bview, row);
3246                         if (tmpheight == row->height())
3247                                 status = LyXText::NEED_VERY_LITTLE_REFRESH;
3248                         else
3249                                 status = LyXText::NEED_MORE_REFRESH;
3250                         refresh_y = y;
3251                         refresh_row = row;
3252                         SetCursor(bview, cursor.par(), cursor.pos(), false, cursor.boundary());
3253                 }
3254         }
3255
3256         // current_font = rawtmpfont;
3257         // real_current_font = realtmpfont;
3258
3259         if (IsBoundary(bview->buffer(), cursor.par(), cursor.pos())
3260             != cursor.boundary())
3261                 SetCursor(bview, cursor.par(), cursor.pos(), false,
3262                           !cursor.boundary());
3263
3264 #ifndef NEW_INSETS
3265         lastpos = cursor.par()->Last();
3266 #else
3267         lastpos = cursor.par()->size();
3268 #endif
3269         if (cursor.pos() == lastpos)
3270                 SetCurrentFont(bview);
3271
3272         // check, whether the last characters font has changed.
3273         if (rawparfont !=
3274             cursor.par()->GetFontSettings(bview->buffer()->params, lastpos - 1)) {
3275                 RedoHeightOfParagraph(bview, cursor);
3276         } else {
3277                 // now the special right address boxes
3278                 if (textclasslist.Style(bview->buffer()->params.textclass,
3279                                         cursor.par()->GetLayout()).margintype == MARGIN_RIGHT_ADDRESS_BOX) {
3280                         RedoDrawingOfParagraph(bview, cursor);
3281                 }
3282         }
3283 }
3284
3285
3286 void LyXText::GetVisibleRow(BufferView * bview, int y_offset, int x_offset,
3287                             Row * row_ptr, int y, bool cleared)
3288 {
3289         // returns a printed row
3290         Painter & pain = bview->painter();
3291
3292         bool const is_rtl =
3293                 row_ptr->par()->isRightToLeftPar(bview->buffer()->params);
3294
3295         LyXParagraph::size_type const last = RowLastPrintable(row_ptr);
3296
3297         LyXParagraph::size_type vpos;
3298         LyXParagraph::size_type pos;
3299
3300         float tmpx;
3301
3302         LyXFont font(LyXFont::ALL_SANE);
3303         int maxdesc;
3304         if (row_ptr->height() <= 0) {
3305                 lyxerr << "LYX_ERROR: row.height: "
3306                        << row_ptr->height() << endl;
3307                 return;
3308         }
3309
3310         float x;
3311         float fill_separator;
3312         float fill_hfill;
3313         float fill_label_hfill;
3314         PrepareToPrint(bview, row_ptr, x, fill_separator,
3315                        fill_hfill, fill_label_hfill);
3316
3317         if (inset_owner && (x < 0))
3318                 x = 0;
3319         x += x_offset;
3320
3321         // clear the area where we want to paint/print
3322         int const ww = bview->workWidth();
3323
3324         bool clear_area = true;
3325         Inset * inset = 0;
3326
3327         if (!bview->screen()->forceClear() && last == row_ptr->pos()
3328             && row_ptr->par()->GetChar(row_ptr->pos()) == LyXParagraph::META_INSET
3329             && (inset = row_ptr->par()->GetInset(row_ptr->pos()))) {
3330                 clear_area = inset->doClearArea();
3331         }
3332         // we don't need to clear it's already done!!!
3333         if (cleared) {
3334                 clear_area = true;
3335         } else if (clear_area) {
3336 #ifdef WITH_WARNINGS
3337 #warning Should be fixed with a lyxinset::clear_width(bv, font) function! (Jug)
3338 #warning Should we not fix this in the Painter, please have a look Lars! (Jug)
3339 #endif
3340                 int const y = y_offset < 0 ? 0 : y_offset;
3341                 int const h = y_offset < 0 ?
3342                         row_ptr->height() + y_offset : row_ptr->height();
3343                 int const w = inset_owner ?
3344                         inset_owner->width(bview, font) - 2 : ww;
3345                 int const x = x_offset;
3346                 pain.fillRectangle(x, y, w, h);
3347         } else if (inset != 0) {
3348                 int h = row_ptr->baseline() - inset->ascent(bview, font);
3349                 if (h > 0) {
3350                         int const w = (inset_owner ?
3351                                  inset_owner->width(bview, font) : ww);
3352                         pain.fillRectangle(x_offset, y_offset, w, h);
3353                 }
3354                 h += inset->ascent(bview, font) + inset->descent(bview, font);
3355                 if ((row_ptr->height() - h) > 0) {
3356                         int const w = (inset_owner ?
3357                                  inset_owner->width(bview, font) : ww);
3358                         pain.fillRectangle(x_offset, y_offset + h,
3359                                            w, row_ptr->height() - h);
3360                 }
3361                 if (!inset_owner && !inset->display() && !inset->needFullRow())
3362                 {
3363                         int const w = inset->width(bview, font) + int(x);
3364                         pain.fillRectangle(w, y_offset, ww - w, row_ptr->height());
3365                 }
3366         }
3367
3368         if (selection) {
3369                 int const w = (inset_owner ?
3370                                inset_owner->width(bview, font) : ww);
3371                 // selection code
3372                 if (bidi_same_direction) {
3373                         if (sel_start_cursor.row() == row_ptr &&
3374                             sel_end_cursor.row() == row_ptr) {
3375                                 if (sel_start_cursor.x() < sel_end_cursor.x())
3376                                         pain.fillRectangle(x_offset + sel_start_cursor.x(),
3377                                                            y_offset,
3378                                                            sel_end_cursor.x() - sel_start_cursor.x(),
3379                                                            row_ptr->height(),
3380                                                            LColor::selection);
3381                                 else
3382                                         pain.fillRectangle(x_offset + sel_end_cursor.x(),
3383                                                            y_offset,
3384                                                            sel_start_cursor.x() - sel_end_cursor.x(),
3385                                                            row_ptr->height(),
3386                                                            LColor::selection);
3387                         } else if (sel_start_cursor.row() == row_ptr) {
3388                                 if (is_rtl)
3389                                         pain.fillRectangle(x_offset, y_offset,
3390                                                            sel_start_cursor.x(),
3391                                                            row_ptr->height(),
3392                                                            LColor::selection);
3393                                 else
3394                                         pain.fillRectangle(x_offset + sel_start_cursor.x(),
3395                                                            y_offset,
3396                                                            w - sel_start_cursor.x(),
3397                                                            row_ptr->height(),
3398                                                            LColor::selection);
3399                         } else if (sel_end_cursor.row() == row_ptr) {
3400                                 if (is_rtl)
3401                                         pain.fillRectangle(x_offset + sel_end_cursor.x(),
3402                                                            y_offset,
3403                                                            w - sel_end_cursor.x(),
3404                                                            row_ptr->height(),
3405                                                            LColor::selection);
3406                                 else
3407                                         pain.fillRectangle(x_offset, y_offset,
3408                                                            sel_end_cursor.x(),
3409                                                            row_ptr->height(),
3410                                                            LColor::selection);
3411                         } else if (y > sel_start_cursor.y()
3412                                    && y < sel_end_cursor.y()) {
3413                                 pain.fillRectangle(x_offset, y_offset, w,
3414                                                    row_ptr->height(),
3415                                                    LColor::selection);
3416                         }
3417                 } else if (sel_start_cursor.row() != row_ptr &&
3418                             sel_end_cursor.row() != row_ptr &&
3419                             y > sel_start_cursor.y()
3420                             && y < sel_end_cursor.y()) {
3421                         pain.fillRectangle(x_offset, y_offset, w,
3422                                            row_ptr->height(),
3423                                            LColor::selection);
3424                 } else if (sel_start_cursor.row() == row_ptr ||
3425                            sel_end_cursor.row() == row_ptr) {
3426                         float tmpx = x;
3427                         if ((sel_start_cursor.row() != row_ptr && !is_rtl) ||
3428                              (sel_end_cursor.row() != row_ptr && is_rtl))
3429                                 pain.fillRectangle(x_offset, y_offset,
3430                                                    int(tmpx),
3431                                                    row_ptr->height(),
3432                                                    LColor::selection);
3433                         LyXParagraph::size_type main_body =
3434                                 BeginningOfMainBody(bview->buffer(),
3435                                                     row_ptr->par());
3436
3437                         for (vpos = row_ptr->pos(); vpos <= last; ++vpos)  {
3438                                 pos = vis2log(vpos);
3439                                 float const old_tmpx = tmpx;
3440                                 if (main_body > 0 && pos == main_body-1) {
3441                                         tmpx += fill_label_hfill +
3442                                                 lyxfont::width(textclasslist.Style(bview->buffer()->params.textclass,
3443                                                                                    row_ptr->par()->GetLayout()).labelsep,
3444                                                                GetFont(bview->buffer(),row_ptr->par(), -2));
3445                                         if (row_ptr->par()->IsLineSeparator(main_body-1))
3446                                                 tmpx -= SingleWidth(bview, row_ptr->par(), main_body-1);
3447                                 }
3448                                 if (HfillExpansion(bview->buffer(), row_ptr, pos)) {
3449                                         tmpx += SingleWidth(bview, row_ptr->par(), pos);
3450                                         if (pos >= main_body)
3451                                                 tmpx += fill_hfill;
3452                                         else
3453                                                 tmpx += fill_label_hfill;
3454                                 }
3455                                 else if (row_ptr->par()->IsSeparator(pos)) {
3456                                         tmpx += SingleWidth(bview, row_ptr->par(), pos);
3457                                         if (pos >= main_body)
3458                                                 tmpx += fill_separator;
3459                                 } else
3460                                         tmpx += SingleWidth(bview, row_ptr->par(), pos);
3461
3462                                 if ((sel_start_cursor.row() != row_ptr ||
3463                                       sel_start_cursor.pos() <= pos) &&
3464                                      (sel_end_cursor.row() != row_ptr ||
3465                                       pos < sel_end_cursor.pos()) )
3466                                         // Here we do not use x_offset as x_offset was
3467                                         // added to x.
3468                                         pain.fillRectangle(int(old_tmpx),
3469                                                            y_offset,
3470                                                            int(tmpx - old_tmpx + 1),
3471                                                            row_ptr->height(),
3472                                                            LColor::selection);
3473                         }
3474
3475                         if ((sel_start_cursor.row() != row_ptr && is_rtl) ||
3476                              (sel_end_cursor.row() != row_ptr && !is_rtl) )
3477                                 pain.fillRectangle(x_offset + int(tmpx),
3478                                                    y_offset,
3479                                                    int(ww - tmpx),
3480                                                    row_ptr->height(),
3481                                                    LColor::selection);
3482                 }
3483         }
3484
3485         int box_x = 0;
3486 #ifndef NEW_INSETS
3487         if (row_ptr->par()->footnoteflag == LyXParagraph::OPEN_FOOTNOTE) {
3488                 LyXFont font(LyXFont::ALL_SANE);
3489                 font.setSize(LyXFont::SIZE_FOOTNOTE);
3490                 font.setColor(LColor::footnote);
3491
3492                 box_x = LYX_PAPER_MARGIN + lyxfont::width(" wide-tab ", font);
3493                 if (row_ptr->previous() &&
3494                     row_ptr->previous()->par()->footnoteflag != LyXParagraph::OPEN_FOOTNOTE){
3495                         string fs;
3496                         switch (row_ptr->par()->footnotekind) {
3497                         case LyXParagraph::MARGIN:
3498                                 fs = " margin";
3499                                 break;
3500                         case LyXParagraph::FIG:
3501                                 fs = " fig";
3502                                 break;
3503                         case LyXParagraph::TAB:
3504                                 fs = " tab";
3505                                 break;
3506                         case LyXParagraph::WIDE_FIG:
3507                                 fs = " wide-fig";
3508                                 break;
3509                         case LyXParagraph::WIDE_TAB:
3510                                 fs = " wide-tab";
3511                                 break;
3512                         case LyXParagraph::ALGORITHM:
3513                                 fs = " alg";
3514                                 break;
3515                         case LyXParagraph::FOOTNOTE:
3516                                 fs = " foot";
3517                                 break;
3518                         }
3519
3520                         pain.fillRectangle(LYX_PAPER_MARGIN,
3521                                            y_offset + 1,
3522                                            box_x - LYX_PAPER_MARGIN,
3523                                            int(lyxfont::maxAscent(font)
3524                                                + lyxfont::maxDescent(font)),
3525                                            LColor::footnotebg);
3526
3527                         pain.line(LYX_PAPER_MARGIN, y_offset,
3528                                   workWidth(bview) - LYX_PAPER_MARGIN, y_offset,
3529                                   LColor::footnoteframe);
3530
3531                         pain.text(LYX_PAPER_MARGIN,
3532                                   y_offset + int(lyxfont::maxAscent(font)) + 1,
3533                                   fs, font);
3534
3535                         pain.line(LYX_PAPER_MARGIN, y_offset,
3536                                   LYX_PAPER_MARGIN,
3537                                   y_offset + int(lyxfont::maxAscent(font)
3538                                                + lyxfont::maxDescent(font)),
3539                                   LColor::footnoteframe);
3540
3541                         pain.line(LYX_PAPER_MARGIN,
3542                                   y_offset + int(lyxfont::maxAscent(font)
3543                                                + lyxfont::maxDescent(font)) + 1,
3544                                   box_x,
3545                                   y_offset + int(lyxfont::maxAscent(font)
3546                                                + lyxfont::maxDescent(font)) + 1,
3547                                   LColor::footnoteframe);
3548
3549                 }
3550
3551                 /* draw the open floats in a red box */
3552                 pain.line(box_x, y_offset,
3553                           box_x, y_offset + row_ptr->height(),
3554                           LColor::footnoteframe);
3555
3556                 pain.line(workWidth(bview) - LYX_PAPER_MARGIN,
3557                           y_offset,
3558                           workWidth(bview) - LYX_PAPER_MARGIN,
3559                           y_offset + row_ptr->height(),
3560                           LColor::footnoteframe);
3561
3562
3563                 // Draw appendix lines
3564                 LyXParagraph * p = row_ptr->par()->PreviousBeforeFootnote()->FirstPhysicalPar();
3565                 if (p->params.appendix()) {
3566                         pain.line(1, y_offset,
3567                                   1, y_offset + row_ptr->height(),
3568                                   LColor::appendixline);
3569                         pain.line(workWidth(bview) - 2, y_offset,
3570                                   workWidth(bview) - 2,
3571                                   y_offset + row_ptr->height(),
3572                                   LColor::appendixline);
3573                 }
3574
3575 #ifndef NO_PEXTRA
3576                 // Draw minipage line
3577                 bool const minipage =
3578                         (p->params.pextraType() == LyXParagraph::PEXTRA_MINIPAGE);
3579                 if (minipage)
3580                         pain.line(LYX_PAPER_MARGIN/5, y_offset,
3581                                   LYX_PAPER_MARGIN/5,
3582                                   y_offset + row_ptr->height() - 1,
3583                                   LColor::minipageline);
3584 #endif
3585                 // Draw depth lines
3586                 int const depth = p->GetDepth();
3587                 for (int i = 1; i <= depth; ++i) {
3588                         int const line_x = (LYX_PAPER_MARGIN / 5) *
3589                                 (i + minipage);
3590                         pain.line(line_x, y_offset, line_x,
3591                                   y_offset + row_ptr->height() - 1,
3592                                   LColor::depthbar);
3593                 }
3594         } else if (row_ptr->previous() &&
3595                    row_ptr->previous()->par()->footnoteflag
3596                    == LyXParagraph::OPEN_FOOTNOTE) {
3597                 LyXFont font(LyXFont::ALL_SANE);
3598                 font.setSize(LyXFont::SIZE_FOOTNOTE);
3599
3600                 int const box_x = LYX_PAPER_MARGIN
3601                         + lyxfont::width(" wide-tab ", font);
3602
3603                 pain.line(box_x, y_offset,
3604                           workWidth(bview) - LYX_PAPER_MARGIN,
3605                           y_offset, LColor::footnote);
3606         }
3607 #endif
3608         // Draw appendix lines
3609 #ifndef NEW_INSETS
3610         LyXParagraph * firstpar = row_ptr->par()->FirstPhysicalPar();
3611 #else
3612         LyXParagraph * firstpar = row_ptr->par();
3613 #endif
3614         if (firstpar->params.appendix()) {
3615                 pain.line(1, y_offset,
3616                           1, y_offset + row_ptr->height(),
3617                           LColor::appendixline);
3618                 pain.line(ww - 2, y_offset,
3619                           ww - 2, y_offset + row_ptr->height(),
3620                           LColor::appendixline);
3621         }
3622 #ifndef NO_PEXTRA
3623         // Draw minipage line
3624         bool const minipage =
3625                 (firstpar->params.pextraType() == LyXParagraph::PEXTRA_MINIPAGE);
3626         if (minipage)
3627                 pain.line(LYX_PAPER_MARGIN/5 + box_x, y_offset,
3628                           LYX_PAPER_MARGIN/5 + box_x,
3629                           y_offset + row_ptr->height() - 1,
3630                           LColor::minipageline);
3631 #endif
3632         // Draw depth lines
3633         int const depth = firstpar->GetDepth();
3634         if (depth > 0) {
3635                 int next_depth = 0;
3636                 int prev_depth = 0;
3637                 if (row_ptr->next())
3638 #ifndef NEW_INSETS
3639                         if (row_ptr->par()->footnoteflag ==
3640                             row_ptr->next()->par()->footnoteflag)
3641                                 next_depth = row_ptr->next()->par()->GetDepth();
3642                         else if (row_ptr->par()->footnoteflag != LyXParagraph::OPEN_FOOTNOTE)
3643                                 next_depth = depth;
3644 #else
3645                                 next_depth = row_ptr->next()->par()->GetDepth();
3646 #endif
3647                 if (row_ptr->previous())
3648 #ifndef NEW_INSETS
3649                         if (row_ptr->par()->footnoteflag ==
3650                             row_ptr->previous()->par()->footnoteflag)
3651                                 prev_depth = row_ptr->previous()->par()->GetDepth();
3652                         else if (row_ptr->par()->footnoteflag != LyXParagraph::OPEN_FOOTNOTE)
3653                                 prev_depth = depth;
3654 #else
3655                                 prev_depth = row_ptr->previous()->par()->GetDepth();
3656 #endif
3657
3658                 for (int i = 1; i <= depth; ++i) {
3659                         int const line_x = (LYX_PAPER_MARGIN / 5) *
3660                                 (i
3661 #ifndef NO_PEXTRA
3662                                  + minipage
3663 #endif
3664                                         ) + box_x + x_offset;
3665                         pain.line(line_x, y_offset, line_x,
3666                                   y_offset + row_ptr->height() - 1 - (i - next_depth - 1) * 3,
3667                                   LColor::depthbar);
3668
3669                         if (i > prev_depth)
3670                                 pain.fillRectangle(line_x, y_offset, LYX_PAPER_MARGIN / 5, 2,
3671                                                    LColor::depthbar);
3672                         if (i > next_depth)
3673                                 pain.fillRectangle(line_x,
3674                                                    y_offset + row_ptr->height() - 2 - (i - next_depth - 1) * 3,
3675                                                    LYX_PAPER_MARGIN / 5, 2,
3676                                                    LColor::depthbar);
3677                 }
3678         }
3679
3680
3681         LyXLayout const & layout =
3682                 textclasslist.Style(bview->buffer()->params.textclass,
3683                                     row_ptr->par()->GetLayout());
3684
3685         int y_top = 0;
3686         int y_bottom = row_ptr->height();
3687
3688         // is it a first row?
3689         if (!row_ptr->pos() && (row_ptr->par() == firstpar)) {
3690
3691                 // start of appendix?
3692                 if (row_ptr->par()->params.startOfAppendix()) {
3693                         pain.line(1, y_offset,
3694                                   ww - 2, y_offset,
3695                                   LColor::appendixline);
3696                 }
3697
3698                 // think about the margins
3699                 if (!row_ptr->previous() && bv_owner)
3700                         y_top += LYX_PAPER_MARGIN;
3701
3702                 // draw a top pagebreak
3703                 if (row_ptr->par()->params.pagebreakTop()) {
3704                         LyXFont pb_font;
3705                         pb_font.setColor(LColor::pagebreak).decSize();
3706                         int w = 0;
3707                         int a = 0;
3708                         int d = 0;
3709                         pain.line(0, y_offset + y_top + 2*DefaultHeight(),
3710                                   ww,
3711                                   y_offset + y_top + 2 * DefaultHeight(),
3712                                   LColor::pagebreak,
3713                                   Painter::line_onoffdash)
3714                                 .rectText(0,
3715                                           0,
3716                                           _("Page Break (top)"),
3717                                           pb_font,
3718                                           LColor::background,
3719                                           LColor::background, false, w, a, d);
3720                         pain.rectText((ww - w)/2,
3721                                       y_offset + y_top + 2 * DefaultHeight() + d,
3722                                       _("Page Break (top)"),
3723                                       pb_font,
3724                                       LColor::background,
3725                                       LColor::background);
3726                         y_top += 3 * DefaultHeight();
3727                 }
3728
3729                 if (row_ptr->par()->params.spaceTop().kind() == VSpace::VFILL) {
3730                         // draw a vfill top
3731                         pain.line(0, y_offset + 2 + y_top,
3732                                   LYX_PAPER_MARGIN, y_offset + 2 + y_top,
3733                                   LColor::vfillline);
3734
3735                         pain.line(0, y_offset + y_top + 3 * DefaultHeight(),
3736                                   LYX_PAPER_MARGIN,
3737                                   y_offset + y_top + 3 * DefaultHeight(),
3738                                   LColor::vfillline);
3739
3740                         pain.line(LYX_PAPER_MARGIN / 2, y_offset + 2 + y_top,
3741                                   LYX_PAPER_MARGIN / 2,
3742                                   y_offset + y_top + 3 * DefaultHeight(),
3743                                   LColor::vfillline);
3744
3745                         y_top += 3 * DefaultHeight();
3746                 }
3747
3748                 // think about user added space
3749                 y_top += int(row_ptr->par()->params.spaceTop().inPixels(bview));
3750
3751                 // think about the parskip
3752                 // some parskips VERY EASY IMPLEMENTATION
3753                 if (bview->buffer()->params.paragraph_separation == BufferParams::PARSEP_SKIP) {
3754                         if (layout.latextype == LATEX_PARAGRAPH
3755                             && firstpar->GetDepth() == 0
3756                             && firstpar->previous())
3757                                 y_top += bview->buffer()->params.getDefSkip().inPixels(bview);
3758                         else if (firstpar->previous()
3759                                  && textclasslist.Style(bview->buffer()->params.textclass,
3760                                                         firstpar->previous()->GetLayout()).latextype == LATEX_PARAGRAPH
3761                                  && firstpar->previous()->GetDepth() == 0)
3762                                 // is it right to use defskip here, too? (AS)
3763                                 y_top += bview->buffer()->params.getDefSkip().inPixels(bview);
3764                 }
3765
3766                 if (row_ptr->par()->params.lineTop()) {
3767                         // draw a top line
3768                         y_top +=  lyxfont::ascent('x',
3769                                                   GetFont(bview->buffer(),
3770                                                           row_ptr->par(), 0));
3771                         int const w = (inset_owner ?
3772                                        inset_owner->width(bview, font) : ww);
3773                         int const xp = static_cast<int>(inset_owner ? x : 0);
3774                         pain.line(xp, y_offset + y_top,
3775                                   w, y_offset + y_top,
3776                                   LColor::topline,
3777                                   Painter::line_solid,
3778                                   Painter::line_thick);
3779
3780                         y_top +=  lyxfont::ascent('x',GetFont(bview->buffer(),
3781                                                               row_ptr->par(), 0));
3782                 }
3783
3784                 // should we print a label?
3785                 if (layout.labeltype >= LABEL_STATIC
3786                     && (layout.labeltype != LABEL_STATIC
3787                         || layout.latextype != LATEX_ENVIRONMENT
3788                         || row_ptr->par()->IsFirstInSequence())) {
3789                         font = GetFont(bview->buffer(), row_ptr->par(), -2);
3790                         if (!row_ptr->par()->GetLabelstring().empty()) {
3791                                 tmpx = x;
3792                                 string const tmpstring =
3793                                         row_ptr->par()->GetLabelstring();
3794
3795                                 if (layout.labeltype == LABEL_COUNTER_CHAPTER) {
3796                                         if (bview->buffer()->params.secnumdepth >= 0) {
3797                                                 // this is special code for
3798                                                 // the chapter layout. This is
3799                                                 // printed in an extra row
3800                                                 // and has a pagebreak at
3801                                                 // the top.
3802                                                 float spacing_val = 1.0;
3803                                                 if (!row_ptr->par()->params.spacing().isDefault()) {
3804                                                         spacing_val = row_ptr->par()->params.spacing().getValue();
3805                                                 } else {
3806                                                         spacing_val = bview->buffer()->params.spacing.getValue();
3807                                                 }
3808
3809                                                 maxdesc = int(lyxfont::maxDescent(font) * layout.spacing.getValue() * spacing_val)
3810                                                         + int(layout.parsep) * DefaultHeight();
3811                                                 if (is_rtl)
3812                                                         tmpx = ww - LeftMargin(bview, row_ptr) -
3813                                                                 lyxfont::width(tmpstring, font);
3814                                                 pain.text(int(tmpx),
3815                                                           y_offset + row_ptr->baseline() - row_ptr->ascent_of_text() - maxdesc,
3816                                                           tmpstring, font);
3817                                         }
3818                                 } else {
3819                                         if (is_rtl) {
3820                                                 tmpx = ww - LeftMargin(bview, row_ptr)
3821                                                         + lyxfont::width(layout.labelsep, font);
3822 #ifndef NEW_INSETS
3823                                                 if (row_ptr->par()->footnoteflag == LyXParagraph::OPEN_FOOTNOTE)  {
3824                                                         LyXFont font(LyXFont::ALL_SANE);
3825                                                         font.setSize(LyXFont::SIZE_SMALL);
3826                                                         tmpx += lyxfont::width("Mwide-fixM", font);
3827                                                 }
3828 #endif
3829                                         } else
3830                                                 tmpx = x - lyxfont::width(layout.labelsep, font)
3831                                                         - lyxfont::width(tmpstring, font);
3832
3833                                         // draw it!
3834                                         pain.text(int(tmpx),
3835                                                   y_offset + row_ptr->baseline(),
3836                                                   tmpstring, font);
3837                                 }
3838                         }
3839                         // the labels at the top of an environment.
3840                         // More or less for bibliography
3841                 } else if (layout.labeltype == LABEL_TOP_ENVIRONMENT ||
3842                            layout.labeltype == LABEL_BIBLIO ||
3843                            layout.labeltype == LABEL_CENTERED_TOP_ENVIRONMENT) {
3844                         if (row_ptr->par()->IsFirstInSequence()) {
3845                                 font = GetFont(bview->buffer(),
3846                                                row_ptr->par(), -2);
3847                                 if (!row_ptr->par()->GetLabelstring().empty()) {
3848                                         string const tmpstring =
3849                                                 row_ptr->par()->GetLabelstring();
3850                                         float spacing_val = 1.0;
3851                                         if (!row_ptr->par()->params.spacing().isDefault()) {
3852                                                 spacing_val = row_ptr->par()->params.spacing().getValue();
3853                                         } else {
3854                                                 spacing_val = bview->buffer()->params.spacing.getValue();
3855                                         }
3856
3857                                         maxdesc = int(lyxfont::maxDescent(font) * layout.spacing.getValue() * spacing_val
3858                                                       + (layout.labelbottomsep * DefaultHeight()));
3859
3860                                         tmpx = x;
3861                                         if (layout.labeltype == LABEL_CENTERED_TOP_ENVIRONMENT){
3862                                                 tmpx = ( (is_rtl ? LeftMargin(bview, row_ptr) : x)
3863                                                          + ww - RightMargin(bview->buffer(), row_ptr) ) / 2;
3864                                                 tmpx -= lyxfont::width(tmpstring, font) / 2;
3865                                         } else if (is_rtl)
3866                                                 tmpx = ww - LeftMargin(bview, row_ptr) -
3867                                                         lyxfont::width(tmpstring, font);
3868                                         pain.text(int(tmpx),
3869                                                   y_offset + row_ptr->baseline()
3870                                                   - row_ptr->ascent_of_text()
3871                                                   - maxdesc,
3872                                                   tmpstring, font);
3873                                 }
3874                         }
3875                 }
3876                 if (layout.labeltype == LABEL_BIBLIO && row_ptr->par()->bibkey) {
3877                         font = GetFont(bview->buffer(), row_ptr->par(), -1);
3878                         if (is_rtl)
3879                                 tmpx = ww - LeftMargin(bview, row_ptr)
3880                                         + lyxfont::width(layout.labelsep, font);
3881                         else
3882                                 tmpx = x - lyxfont::width(layout.labelsep, font)
3883                                         - row_ptr->par()->bibkey->width(bview, font);
3884                         row_ptr->par()->bibkey->draw(bview, font,
3885                                                    y_offset + row_ptr->baseline(),
3886                                                    tmpx, clear_area);
3887                 }
3888         }
3889
3890         // is it a last row?
3891 #ifndef NEW_INSETS
3892         LyXParagraph * par = row_ptr->par()->LastPhysicalPar();
3893 #else
3894         LyXParagraph * par = row_ptr->par();
3895 #endif
3896         if (
3897 #ifndef NEW_INSETS
3898                 row_ptr->par()->ParFromPos(last + 1) == par
3899 #else
3900                 row_ptr->par() == par
3901 #endif
3902                 && (!row_ptr->next() || row_ptr->next()->par() != row_ptr->par()))
3903         {
3904                 // think about the margins
3905                 if (!row_ptr->next() && bv_owner)
3906                         y_bottom -= LYX_PAPER_MARGIN;
3907
3908                 // draw a bottom pagebreak
3909                 if (firstpar->params.pagebreakBottom()) {
3910                         LyXFont pb_font;
3911                         pb_font.setColor(LColor::pagebreak).decSize();
3912                         int const y_place = y_offset + y_bottom
3913                                 - 2 * DefaultHeight();
3914
3915                         int w = 0;
3916                         int a = 0;
3917                         int d = 0;
3918                         pain
3919                                 .line(0, y_place, ww, y_place,
3920                                       LColor::pagebreak,
3921                                       Painter::line_onoffdash)
3922                                 .rectText(0, 0,
3923                                           _("Page Break (bottom)"),
3924                                           pb_font,
3925                                           LColor::background,
3926                                           LColor::background, false, w, a, d);
3927                         pain.rectText((ww - w) / 2, y_place + d,
3928                                       _("Page Break (bottom)"),
3929                                       pb_font,
3930                                       LColor::background,
3931                                       LColor::background);
3932                         y_bottom -= 3 * DefaultHeight();
3933                 }
3934
3935                 if (firstpar->params.spaceBottom().kind() == VSpace::VFILL) {
3936                         // draw a vfill bottom
3937                         int const y_place = y_offset + y_bottom
3938                                 - 3 * DefaultHeight();
3939
3940                         pain.line(0, y_place,
3941                                   LYX_PAPER_MARGIN, y_place,
3942                                   LColor::vfillline);
3943                         pain.line(0, y_offset + y_bottom - 2,
3944                                   LYX_PAPER_MARGIN,
3945                                   y_offset + y_bottom - 2,
3946                                   LColor::vfillline);
3947                         pain.line(LYX_PAPER_MARGIN / 2,
3948                                   y_place,
3949                                   LYX_PAPER_MARGIN / 2,
3950                                   y_offset + y_bottom - 2,
3951                                   LColor::vfillline);
3952                         y_bottom -= 3 * DefaultHeight();
3953                 }
3954
3955                 // think about user added space
3956                 y_bottom -= int(firstpar->params.spaceBottom().inPixels(bview));
3957
3958                 if (firstpar->params.lineBottom()) {
3959                         // draw a bottom line
3960 #ifndef NEW_INSETS
3961                         y_bottom -= lyxfont::ascent('x',
3962                                                     GetFont(bview->buffer(),
3963                                                             par,
3964                                                             par->Last() - 1));
3965 #else
3966                         y_bottom -= lyxfont::ascent('x',
3967                                                     GetFont(bview->buffer(),
3968                                                             par,
3969                                                             par->size() - 1));
3970 #endif
3971                         int const w = (inset_owner ?
3972                                        inset_owner->width(bview, font) : ww);
3973                         int const xp = static_cast<int>(inset_owner ? x : 0);
3974                         pain.line(xp, y_offset + y_bottom,
3975                                   w, y_offset + y_bottom,
3976                                   LColor::topline, Painter::line_solid,
3977                                   Painter::line_thick);
3978 #ifndef NEW_INSETS
3979                         y_bottom -= lyxfont::ascent('x',
3980                                                     GetFont(bview->buffer(),
3981                                                             par,
3982                                                             par->Last() - 1));
3983 #else
3984                         y_bottom -= lyxfont::ascent('x',
3985                                                     GetFont(bview->buffer(),
3986                                                             par,
3987                                                             par->size() - 1));
3988 #endif
3989                 }
3990
3991                 // draw an endlabel
3992                 int const endlabel =
3993                         row_ptr->par()->GetEndLabel(bview->buffer()->params);
3994                 switch (endlabel) {
3995                 case END_LABEL_BOX:
3996                 case END_LABEL_FILLED_BOX:
3997                 {
3998                         LyXFont const font = GetFont(bview->buffer(),
3999                                                      row_ptr->par(), last);
4000                         int const size = int(0.75 * lyxfont::maxAscent(font));
4001                         int const y = (y_offset + row_ptr->baseline()) - size;
4002                         int x = is_rtl ? LYX_PAPER_MARGIN
4003                                 : ww - LYX_PAPER_MARGIN - size;
4004 #ifndef NEW_INSETS
4005                         if (row_ptr->par()->footnoteflag == LyXParagraph::OPEN_FOOTNOTE)
4006                                 if (is_rtl) {
4007                                         LyXFont font(LyXFont::ALL_SANE);
4008                                         font.setSize(LyXFont::SIZE_SMALL);
4009                                         x += lyxfont::width("Mwide-figM", font);
4010                                 } else
4011                                         x -= LYX_PAPER_MARGIN/2;
4012 #endif
4013                         if (row_ptr->fill() <= size)
4014                                 x += (size - row_ptr->fill() + 1) * (is_rtl ? -1 : 1);
4015                         if (endlabel == END_LABEL_BOX) {
4016                                 pain.line(x, y, x, y + size,
4017                                           LColor::eolmarker);
4018                                 pain.line(x + size, y, x + size , y + size,
4019                                           LColor::eolmarker);
4020                                 pain.line(x, y, x + size, y,
4021                                           LColor::eolmarker);
4022                                 pain.line(x, y + size, x + size, y + size,
4023                                           LColor::eolmarker);
4024                         } else
4025                                 pain.fillRectangle(x, y, size, size,
4026                                                    LColor::eolmarker);
4027                         break;
4028                 }
4029                 case END_LABEL_STATIC:
4030                 {
4031                         LyXTextClass::LayoutList::size_type layout = row_ptr->par()->GetLayout();
4032                         string const tmpstring = textclasslist.
4033                                 Style(bview->buffer()->params.textclass,
4034                                       layout).endlabelstring();
4035                         font = GetFont(bview->buffer(), row_ptr->par(), -2);
4036                         int const tmpx = is_rtl ?
4037                                 int(x) - lyxfont::width(tmpstring, font)
4038                                 : ww - RightMargin(bview->buffer(), row_ptr) - row_ptr->fill();
4039                         pain.text( tmpx, y_offset + row_ptr->baseline(), tmpstring, font);
4040                         break;
4041                 }
4042                 case END_LABEL_NO_LABEL:
4043                         break;
4044                 }
4045         }
4046
4047         // draw the text in the pixmap
4048
4049         vpos = row_ptr->pos();
4050
4051         LyXParagraph::size_type main_body =
4052                 BeginningOfMainBody(bview->buffer(), row_ptr->par());
4053         if (main_body > 0 &&
4054             (main_body-1 > last ||
4055              !row_ptr->par()->IsLineSeparator(main_body - 1)))
4056                 main_body = 0;
4057
4058         while (vpos <= last)  {
4059                 pos = vis2log(vpos);
4060                 if (main_body > 0 && pos == main_body - 1) {
4061                         x += fill_label_hfill
4062                                 + lyxfont::width(layout.labelsep,
4063                                                  GetFont(bview->buffer(),
4064                                                          row_ptr->par(), -2))
4065                                 - SingleWidth(bview,
4066                                               row_ptr->par(),
4067                                               main_body - 1);
4068                 }
4069
4070                 if (row_ptr->par() ->IsHfill(pos)) {
4071                         x += 1;
4072                         pain.line(int(x),
4073                                   y_offset + row_ptr->baseline() - DefaultHeight() / 2,
4074                                   int(x),
4075                                   y_offset + row_ptr->baseline(),
4076                                   LColor::vfillline);
4077
4078                         if (HfillExpansion(bview->buffer(),
4079                                            row_ptr, pos)) {
4080                                 if (pos >= main_body) {
4081                                         pain.line(int(x),
4082                                                   y_offset + row_ptr->baseline() - DefaultHeight() / 4,
4083                                                   int(x + fill_hfill),
4084                                                   y_offset + row_ptr->baseline() - DefaultHeight() / 4,
4085                                                   LColor::vfillline,
4086                                                   Painter::line_onoffdash);
4087                                         x += fill_hfill;
4088                                 } else {
4089                                         pain.line(int(x),
4090                                                   y_offset + row_ptr->baseline() - DefaultHeight() / 4,
4091                                                   int(x + fill_label_hfill),
4092                                                   y_offset + row_ptr->baseline() - DefaultHeight() / 4,
4093                                                   LColor::vfillline,
4094                                                   Painter::line_onoffdash);
4095
4096                                         x += fill_label_hfill;
4097                                 }
4098                                 pain.line(int(x),
4099                                           y_offset + row_ptr->baseline() - DefaultHeight() / 2,
4100                                           int(x),
4101                                           y_offset + row_ptr->baseline(),
4102                                           LColor::vfillline);
4103                         }
4104                         x += 2;
4105                         ++vpos;
4106                 } else if (row_ptr->par()->IsSeparator(pos)) {
4107                         x += SingleWidth(bview,
4108                                          row_ptr->par(), pos);
4109                         if (pos >= main_body)
4110                                 x += fill_separator;
4111                         ++vpos;
4112                 } else
4113                         draw(bview, row_ptr, vpos, y_offset, x, clear_area);
4114         }
4115 }
4116
4117
4118 int LyXText::DefaultHeight() const
4119 {
4120         LyXFont font(LyXFont::ALL_SANE);
4121         return int(lyxfont::maxAscent(font) + lyxfont::maxDescent(font) * 1.5);
4122 }
4123
4124
4125 /* returns the column near the specified x-coordinate of the row
4126 * x is set to the real beginning of this column  */
4127 int LyXText::GetColumnNearX(BufferView * bview, Row * row, int & x,
4128                             bool & boundary) const
4129 {
4130         float tmpx = 0.0;
4131         float fill_separator, fill_hfill, fill_label_hfill;
4132
4133         PrepareToPrint(bview, row, tmpx, fill_separator,
4134                        fill_hfill, fill_label_hfill);
4135
4136         LyXParagraph::size_type vc = row->pos();
4137         LyXParagraph::size_type last = RowLastPrintable(row);
4138         LyXParagraph::size_type c = 0;
4139         LyXLayout const & layout =
4140                 textclasslist.Style(bview->buffer()->params.textclass,
4141                                     row->par()->GetLayout());
4142         bool left_side = false;
4143
4144         LyXParagraph::size_type
4145                 main_body = BeginningOfMainBody(bview->buffer(), row->par());
4146         float last_tmpx = tmpx;
4147
4148         if (main_body > 0 &&
4149             (main_body-1 > last ||
4150              !row->par()->IsLineSeparator(main_body - 1)))
4151                 main_body = 0;
4152
4153         while (vc <= last && tmpx <= x) {
4154                 c = vis2log(vc);
4155                 last_tmpx = tmpx;
4156                 if (main_body > 0 && c == main_body-1) {
4157                         tmpx += fill_label_hfill +
4158                                 lyxfont::width(layout.labelsep,
4159                                                GetFont(bview->buffer(), row->par(), -2));
4160                         if (row->par()->IsLineSeparator(main_body - 1))
4161                                 tmpx -= SingleWidth(bview, row->par(), main_body-1);
4162                 }
4163
4164                 if (HfillExpansion(bview->buffer(), row, c)) {
4165                         x += SingleWidth(bview, row->par(), c);
4166                         if (c >= main_body)
4167                                 tmpx += fill_hfill;
4168                         else
4169                                 tmpx += fill_label_hfill;
4170                 }
4171                 else if (row->par()->IsSeparator(c)) {
4172                         tmpx += SingleWidth(bview, row->par(), c);
4173                         if (c >= main_body)
4174                                 tmpx+= fill_separator;
4175                 } else
4176                         tmpx += SingleWidth(bview, row->par(), c);
4177                 ++vc;
4178         }
4179
4180         if ((tmpx + last_tmpx) / 2 > x) {
4181                 tmpx = last_tmpx;
4182                 left_side = true;
4183         }
4184
4185         if (vc > last + 1)  // This shouldn't happen.
4186                 vc = last + 1;
4187
4188         boundary = false;
4189         bool const lastrow = lyxrc.rtl_support // This is not needed, but gives
4190                                          // some speedup if rtl_support=false
4191                 && (!row->next() || row->next()->par() != row->par());
4192         bool const rtl = (lastrow)
4193                 ? row->par()->isRightToLeftPar(bview->buffer()->params)
4194                 : false; // If lastrow is false, we don't need to compute
4195                          // the value of rtl.
4196
4197         if (row->pos() > last)  // Row is empty?
4198                 c = row->pos();
4199         else if (lastrow &&
4200                  ( ( rtl &&  left_side && vc == row->pos() && x < tmpx - 5) ||
4201                    (!rtl && !left_side && vc == last + 1   && x > tmpx + 5) ))
4202                 c = last + 1;
4203         else if (vc == row->pos()) {
4204                 c = vis2log(vc);
4205                 if (bidi_level(c) % 2 == 1)
4206                         ++c;
4207         } else {
4208                 c = vis2log(vc - 1);
4209                 bool const rtl = (bidi_level(c) % 2 == 1);
4210                 if (left_side == rtl) {
4211                         ++c;
4212                         boundary = IsBoundary(bview->buffer(), row->par(), c);
4213                 }
4214         }
4215
4216         if (row->pos() <= last && c > last
4217             && row->par()->IsNewline(last)) {
4218                 if (bidi_level(last) % 2 == 0)
4219                         tmpx -= SingleWidth(bview, row->par(), last);
4220                 else
4221                         tmpx += SingleWidth(bview, row->par(), last);
4222                 c = last;
4223         }
4224
4225         c -= row->pos();
4226         x = int(tmpx);
4227         return c;
4228 }
4229
4230
4231 #ifndef NEW_INSETS
4232 /* turn the selection into a new environment. If there is no selection,
4233 * create an empty environment */
4234 void LyXText::InsertFootnoteEnvironment(BufferView * bview,
4235                                         LyXParagraph::footnote_kind kind)
4236 {
4237    /* no footnoteenvironment in a footnoteenvironment */
4238    if (cursor.par()->footnoteflag != LyXParagraph::NO_FOOTNOTE) {
4239       WriteAlert(_("Impossible operation"),
4240                  _("You can't insert a float in a float!"),
4241                  _("Sorry."));
4242      return;
4243    }
4244 #ifndef NO_PEXTRA
4245    /* no marginpars in minipages */
4246    if (kind == LyXParagraph::MARGIN
4247       && cursor.par()->params.pextraType() == LyXParagraph::PEXTRA_MINIPAGE) {
4248       WriteAlert(_("Impossible operation"),
4249                  _("You can't insert a marginpar in a minipage!"),
4250                  _("Sorry."));
4251       return;
4252    }
4253 #endif
4254    /* this doesnt make sense, if there is no selection */
4255    bool dummy_selection = false;
4256    if (!selection) {
4257       sel_start_cursor = cursor;       /* dummy selection  */
4258       sel_end_cursor = cursor;
4259       dummy_selection = true;
4260    }
4261
4262    LyXParagraph * tmppar;
4263
4264    /* a test to make sure there is not already a footnote
4265     * in the selection. */
4266
4267    tmppar = sel_start_cursor.par()->ParFromPos(sel_start_cursor.pos());
4268
4269    while (tmppar != sel_end_cursor.par()->ParFromPos(sel_end_cursor.pos()) &&
4270           tmppar->footnoteflag == LyXParagraph::NO_FOOTNOTE)
4271      tmppar = tmppar->next_;
4272
4273    if (tmppar != sel_end_cursor.par()->ParFromPos(sel_end_cursor.pos())
4274        || tmppar->footnoteflag != LyXParagraph::NO_FOOTNOTE) {
4275       WriteAlert(_("Impossible operation"),
4276                  _("Float would include float!"),
4277                  _("Sorry."));
4278       return;
4279    }
4280
4281    /* ok we have a selection. This is always between sel_start_cursor
4282     * and sel_end cursor */
4283
4284    SetUndo(bview->buffer(), Undo::FINISH,
4285            sel_start_cursor.par()->ParFromPos(sel_start_cursor.pos())->previous_,
4286            sel_end_cursor.par()->ParFromPos(sel_end_cursor.pos())->next_);
4287
4288    if (sel_end_cursor.pos() > 0
4289        && sel_end_cursor.par()->IsLineSeparator(sel_end_cursor.pos() - 1))
4290            sel_end_cursor.pos(sel_end_cursor.pos() - 1);
4291    /* please break before a space at the end */
4292    if (sel_start_cursor.par() == sel_end_cursor.par()
4293        && sel_start_cursor.pos() > sel_end_cursor.pos())
4294            sel_start_cursor.pos(sel_start_cursor.pos() - 1);
4295
4296    sel_end_cursor.par()->BreakParagraphConservative(bview->buffer()->params, sel_end_cursor.pos());
4297
4298    sel_end_cursor.par(sel_end_cursor.par()->next());
4299    sel_end_cursor.pos(0);
4300
4301    // don't forget to insert a dummy layout paragraph if necessary
4302    if (sel_start_cursor.par()->GetLayout() != sel_end_cursor.par()->layout){
4303      sel_end_cursor.par()->BreakParagraphConservative(bview->buffer()->params, 0);
4304      sel_end_cursor.par()->layout = LYX_DUMMY_LAYOUT;
4305      sel_end_cursor.par(sel_end_cursor.par()->next_);
4306    }
4307    else
4308      sel_end_cursor.par()->layout = LYX_DUMMY_LAYOUT;
4309
4310    cursor = sel_end_cursor;
4311
4312    /* please break behind a space, if there is one. The space should
4313     * be erased too */
4314    if (sel_start_cursor.pos() > 0
4315        && sel_start_cursor.par()->IsLineSeparator(sel_start_cursor.pos() - 1))
4316      sel_start_cursor.pos(sel_start_cursor.pos() - 1);
4317    if (sel_start_cursor.par()->IsLineSeparator(sel_start_cursor.pos())) {
4318       sel_start_cursor.par()->Erase(sel_start_cursor.pos());
4319    }
4320
4321    sel_start_cursor.par()->BreakParagraphConservative(bview->buffer()->params,
4322                                                     sel_start_cursor.pos());
4323    tmppar = sel_start_cursor.par()->next();
4324
4325    if (dummy_selection) {
4326            tmppar->Clear();
4327            if (kind == LyXParagraph::TAB
4328                || kind == LyXParagraph::FIG
4329                || kind == LyXParagraph::WIDE_TAB
4330                || kind == LyXParagraph::WIDE_FIG
4331                || kind == LyXParagraph::ALGORITHM) {
4332                    pair<bool, LyXTextClass::size_type> lres =
4333                            textclasslist.NumberOfLayout(bview->buffer()->params.textclass,
4334                                                         "Caption");
4335                    LyXTextClass::size_type lay;
4336                    if (lres.first) {
4337                            // layout fount
4338                            lay = lres.second;
4339                    } else {
4340                            // layout not found
4341                            lay = 0; // use default layout "Standard" (0)
4342                    }
4343                    tmppar->SetLayout(bview->buffer()->params, lay);
4344            }
4345    } else {
4346      if (sel_start_cursor.pos() > 0) {
4347        /* the footnote-environment should begin with a standard layout.
4348         * Imagine you insert a footnote within an enumeration, you
4349         * certainly do not want an enumerated footnote! */
4350        tmppar->Clear();
4351      } else {
4352        /* this is a exception the user would sometimes expect, I hope */
4353        sel_start_cursor.par()->Clear();
4354      }
4355    }
4356
4357    while (tmppar != sel_end_cursor.par()) {
4358       tmppar->footnoteflag = LyXParagraph::OPEN_FOOTNOTE;
4359       tmppar->footnotekind = kind;
4360       tmppar = tmppar->next();
4361    }
4362
4363    RedoParagraphs(bview, sel_start_cursor, sel_end_cursor.par()->next());
4364
4365    SetCursor(bview, sel_start_cursor.par()->next(), 0);
4366
4367    ClearSelection(bview);
4368 }
4369 #endif
4370
4371
4372 // returns pointer to a specified row
4373 Row * LyXText::GetRow(LyXParagraph * par,
4374                       LyXParagraph::size_type pos, int & y) const
4375 {
4376         if (!firstrow)
4377                 return 0;
4378
4379         Row * tmprow = firstrow;
4380         y = 0;
4381
4382         // find the first row of the specified paragraph
4383         while (tmprow->next() && tmprow->par() != par) {
4384                 y += tmprow->height();
4385                 tmprow = tmprow->next();
4386         }
4387
4388         // now find the wanted row
4389         while (tmprow->pos() < pos
4390                && tmprow->next()
4391                && tmprow->next()->par() == par
4392                && tmprow->next()->pos() <= pos) {
4393                 y += tmprow->height();
4394                 tmprow = tmprow->next();
4395         }
4396
4397         return tmprow;
4398 }