src/text.C

   1 /* This file is part of
   2  * ======================================================
   3  *
   4  *           LyX, The Document Processor
   5  *
   6  *           Copyright 1995 Matthias Ettrich
   7  *           Copyright 1995-2001 The LyX Team.
   8  *
   9  * ====================================================== */
  10
  11 #include <config.h>
  12
  13 #include "lyxtext.h"
  14 #include "lyxrow.h"
  15 #include "lyxtextclasslist.h"
  16 #include "paragraph.h"
  17 #include "lyx_gui_misc.h"
  18 #include "gettext.h"
  19 #include "bufferparams.h"
  20 #include "buffer.h"
  21 #include "debug.h"
  22 #include "lyxrc.h"
  23 #include "LyXView.h"
  24 #include "Painter.h"
  25 #include "tracer.h"
  26 #include "font.h"
  27 #include "encoding.h"
  28 #include "lyxscreen.h"
  29 #include "bufferview_funcs.h"
  30 #include "BufferView.h"
  31 #include "language.h"
  32 #include "ParagraphParameters.h"
  33 #include "undo_funcs.h"
  34 #include "font.h"
  35
  36 #include "insets/insetbib.h"
  37 #include "insets/insettext.h"
  38
  39 #include "support/textutils.h"
  40 #include "support/LAssert.h"
  41 #include "support/lstrings.h"
  42
  43 #include <algorithm>
  44
  45 using std::max;
  46 using std::min;
  47 using std::endl;
  48 using std::pair;
  49 using lyx::pos_type;
  50
  51 namespace {
  52
  53 int const LYX_PAPER_MARGIN = 20;
  54
  55 } // namespace anon
  56
  57 extern int bibitemMaxWidth(BufferView *, LyXFont const &);
  58
  59
  60 int LyXText::workWidth(BufferView * bview) const
  61 {
  62         if (inset_owner) {
  63                 return inset_owner->textWidth(bview);
  64         }
  65         return bview->workWidth();
  66 }
  67
  68
  69 int LyXText::workWidth(BufferView * bview, Inset * inset) const
  70 {
  71         Paragraph * par = 0;
  72         pos_type pos = -1;
  73
  74         par = inset->parOwner();
  75         if (par)
  76                 pos = par->getPositionOfInset(inset);
  77
  78         if (!par || pos == -1) {
  79                 lyxerr << "LyXText::workWidth: something is wrong,"
  80                         " fall back to the brute force method" << endl;
  81                 Buffer::inset_iterator it = bview->buffer()->inset_iterator_begin();
  82                 Buffer::inset_iterator end = bview->buffer()->inset_iterator_end();
  83                 for ( ; it != end; ++it) {
  84                         if (*it == inset) {
  85                                 par = it.getPar();
  86                                 pos = it.getPos();
  87                                 break;
  88                         }
  89                 }
  90         }
  91
  92         if (!par) {
  93                 return workWidth(bview);
  94         }
  95
  96         LyXLayout const & layout =
  97                 textclasslist.Style(bview->buffer()->params.textclass,
  98                                     par->getLayout());
  99
 100         if (layout.margintype != MARGIN_RIGHT_ADDRESS_BOX) {
 101                 // Optimization here: in most cases, the real row is
 102                 // not needed, but only the par/pos values. So we just
 103                 // construct a dummy row for leftMargin. (JMarc)
 104                 Row dummyrow;
 105                 dummyrow.par(par);
 106                 dummyrow.pos(pos);
 107                 return workWidth(bview) - leftMargin(bview, &dummyrow);
 108         } else {
 109                 int dummy_y;
 110                 Row * row = getRow(par, pos, dummy_y);
 111                 Row * frow = row;
 112                 while (frow->previous() && frow->par() == frow->previous()->par())
 113                         frow = frow->previous();
 114                 unsigned int maxw = 0;
 115                 while (frow->next() && frow->par() == frow->next()->par()) {
 116                         if ((frow != row) && (maxw < frow->width()))
 117                                 maxw = frow->width();
 118                         frow = frow->next();
 119                 }
 120                 if (maxw)
 121                         return maxw;
 122         }
 123         return workWidth(bview);
 124 }
 125
 126
 127 int LyXText::getRealCursorX(BufferView * bview) const
 128 {
 129         int x = cursor.x();
 130         if (the_locking_inset && (the_locking_inset->getLyXText(bview)!=this))
 131                 x = the_locking_inset->getLyXText(bview)->getRealCursorX(bview);
 132         return x;
 133 }
 134
 135
 136 unsigned char LyXText::transformChar(unsigned char c, Paragraph * par,
 137                         pos_type pos) const
 138 {
 139         if (!Encodings::is_arabic(c))
 140                 if (lyxrc.font_norm_type == LyXRC::ISO_8859_6_8 && IsDigit(c))
 141                         return c + (0xb0 - '0');
 142                 else
 143                         return c;
 144
 145         unsigned char const prev_char = pos > 0 ? par->getChar(pos-1) : ' ';
 146         unsigned char next_char = ' ';
 147
 148         for (pos_type i = pos+1; i < par->size(); ++i)
 149                 if (!Encodings::IsComposeChar_arabic(par->getChar(i))) {
 150                         next_char = par->getChar(i);
 151                         break;
 152                 }
 153
 154         if (Encodings::is_arabic(next_char)) {
 155                 if (Encodings::is_arabic(prev_char))
 156                         return Encodings::TransformChar(c, Encodings::FORM_MEDIAL);
 157                 else
 158                         return Encodings::TransformChar(c, Encodings::FORM_INITIAL);
 159         } else {
 160                 if (Encodings::is_arabic(prev_char))
 161                         return Encodings::TransformChar(c, Encodings::FORM_FINAL);
 162                 else
 163                         return Encodings::TransformChar(c, Encodings::FORM_ISOLATED);
 164         }
 165 }
 166
 167 // This is the comments that some of the warnings below refers to.
 168 // There are some issues in this file and I don't think they are
 169 // really related to the FIX_DOUBLE_SPACE patch. I'd rather think that
 170 // this is a problem that has been here almost from day one and that a
 171 // larger userbase with differenct access patters triggers the bad
 172 // behaviour. (segfaults.) What I think happen is: In several places
 173 // we store the paragraph in the current cursor and then moves the
 174 // cursor. This movement of the cursor will delete paragraph at the
 175 // old position if it is now empty. This will make the temporary
 176 // pointer to the old cursor paragraph invalid and dangerous to use.
 177 // And is some cases this will trigger a segfault. I have marked some
 178 // of the cases where this happens with a warning, but I am sure there
 179 // are others in this file and in text2.C. There is also a note in
 180 // Delete() that you should read. In Delete I store the paragraph->id
 181 // instead of a pointer to the paragraph. I am pretty sure this faulty
 182 // use of temporary pointers to paragraphs that might have gotten
 183 // invalidated (through a cursor movement) before they are used, are
 184 // the cause of the strange crashes we get reported often.
 185 //
 186 // It is very tiresom to change this code, especially when it is as
 187 // hard to read as it is. Help to fix all the cases where this is done
 188 // would be greately appreciated.
 189 //
 190 // Lgb
 191
 192 int LyXText::singleWidth(BufferView * bview, Paragraph * par,
 193                          pos_type pos) const
 194 {
 195         char const c = par->getChar(pos);
 196         return singleWidth(bview, par, pos, c);
 197 }
 198
 199
 200 int LyXText::singleWidth(BufferView * bview, Paragraph * par,
 201                          pos_type pos, char c) const
 202 {
 203         LyXFont const font = getFont(bview->buffer(), par, pos);
 204
 205         // The most common case is handled first (Asger)
 206         if (IsPrintable(c)) {
 207                 if (font.language()->RightToLeft()) {
 208                         if (font.language()->lang() == "arabic" &&
 209                             (lyxrc.font_norm_type == LyXRC::ISO_8859_6_8 ||
 210                              lyxrc.font_norm_type == LyXRC::ISO_10646_1))
 211                                 if (Encodings::IsComposeChar_arabic(c))
 212                                         return 0;
 213                                 else
 214                                         c = transformChar(c, par, pos);
 215                         else if (font.language()->lang() == "hebrew" &&
 216                                  Encodings::IsComposeChar_hebrew(c))
 217                                 return 0;
 218                 }
 219                 return lyxfont::width(c, font);
 220
 221         } else if (IsHfillChar(c)) {
 222                 return 3;       /* Because of the representation
 223                                  * as vertical lines */
 224         } else if (c == Paragraph::META_INSET) {
 225                 Inset * tmpinset = par->getInset(pos);
 226                 if (tmpinset) {
 227 #if 1
 228                         // this IS needed otherwise on initialitation we don't get the fill
 229                         // of the row right (ONLY on initialization if we read a file!)
 230                         // should be changed! (Jug 20011204)
 231                         tmpinset->update(bview, font);
 232 #endif
 233                         return tmpinset->width(bview, font);
 234                 } else
 235                         return 0;
 236
 237         } else if (IsSeparatorChar(c))
 238                 c = ' ';
 239         else if (IsNewlineChar(c))
 240                 c = 'n';
 241         return lyxfont::width(c, font);
 242 }
 243
 244
 245 // Returns the paragraph position of the last character in the specified row
 246 pos_type LyXText::rowLast(Row const * row) const
 247 {
 248         if (!row->next() || row->next()->par() != row->par()) {
 249                 return row->par()->size() - 1;
 250         } else {
 251                 return row->next()->pos() - 1;
 252         }
 253 }
 254
 255
 256 pos_type LyXText::rowLastPrintable(Row const * row) const
 257 {
 258         pos_type const last = rowLast(row);
 259         if (last >= row->pos()
 260             && row->next()
 261             && row->next()->par() == row->par()
 262             && row->par()->isSeparator(last))
 263                 return last - 1;
 264         else
 265                 return last;
 266 }
 267
 268
 269 void LyXText::computeBidiTables(Buffer const * buf, Row * row) const
 270 {
 271         bidi_same_direction = true;
 272         if (!lyxrc.rtl_support) {
 273                 bidi_start = -1;
 274                 return;
 275         }
 276
 277         bidi_start = row->pos();
 278         bidi_end = rowLastPrintable(row);
 279
 280         if (bidi_start > bidi_end) {
 281                 bidi_start = -1;
 282                 return;
 283         }
 284
 285         if (bidi_end + 2 - bidi_start >
 286             static_cast<pos_type>(log2vis_list.size())) {
 287                 pos_type new_size =
 288                         (bidi_end + 2 - bidi_start < 500) ?
 289                         500 : 2 * (bidi_end + 2 - bidi_start);
 290                 log2vis_list.resize(new_size);
 291                 vis2log_list.resize(new_size);
 292                 bidi_levels.resize(new_size);
 293         }
 294
 295         vis2log_list[bidi_end + 1 - bidi_start] = -1;
 296         log2vis_list[bidi_end + 1 - bidi_start] = -1;
 297
 298         pos_type stack[2];
 299         bool const rtl_par =
 300                 row->par()->getParLanguage(buf->params)->RightToLeft();
 301         int level = 0;
 302         bool rtl = false;
 303         bool rtl0 = false;
 304         pos_type const main_body = beginningOfMainBody(buf, row->par());
 305
 306         for (pos_type lpos = bidi_start;
 307              lpos <= bidi_end; ++lpos) {
 308                 bool is_space = row->par()->isLineSeparator(lpos);
 309                 pos_type const pos =
 310                         (is_space && lpos + 1 <= bidi_end &&
 311                          !row->par()->isLineSeparator(lpos + 1) &&
 312                          !row->par()->isNewline(lpos + 1))
 313                         ? lpos + 1 : lpos;
 314                 LyXFont font = row->par()->getFontSettings(buf->params, pos);
 315                 if (pos != lpos && 0 < lpos && rtl0 && font.isRightToLeft() &&
 316                     font.number() == LyXFont::ON &&
 317                     row->par()->getFontSettings(buf->params, lpos - 1).number()
 318                     == LyXFont::ON) {
 319                         font = row->par()->getFontSettings(buf->params, lpos);
 320                         is_space = false;
 321                 }
 322
 323
 324                 bool new_rtl = font.isVisibleRightToLeft();
 325                 bool new_rtl0 = font.isRightToLeft();
 326                 int new_level;
 327
 328                 if (lpos == main_body - 1
 329                     && row->pos() < main_body - 1
 330                     && is_space) {
 331                         new_level = (rtl_par) ? 1 : 0;
 332                         new_rtl = new_rtl0 = rtl_par;
 333                 } else if (new_rtl0)
 334                         new_level = (new_rtl) ? 1 : 2;
 335                 else
 336                         new_level = (rtl_par) ? 2 : 0;
 337
 338                 if (is_space && new_level >= level) {
 339                         new_level = level;
 340                         new_rtl = rtl;
 341                         new_rtl0 = rtl0;
 342                 }
 343
 344                 int new_level2 = new_level;
 345
 346                 if (level == new_level && rtl0 != new_rtl0) {
 347                         --new_level2;
 348                         log2vis_list[lpos - bidi_start] = (rtl) ? 1 : -1;
 349                 } else if (level < new_level) {
 350                         log2vis_list[lpos - bidi_start] =  (rtl) ? -1 : 1;
 351                         if (new_level > rtl_par)
 352                                 bidi_same_direction = false;
 353                 } else
 354                         log2vis_list[lpos - bidi_start] = (new_rtl) ? -1 : 1;
 355                 rtl = new_rtl;
 356                 rtl0 = new_rtl0;
 357                 bidi_levels[lpos - bidi_start] = new_level;
 358
 359                 while (level > new_level2) {
 360                         pos_type old_lpos = stack[--level];
 361                         int delta = lpos - old_lpos - 1;
 362                         if (level % 2)
 363                                 delta = -delta;
 364                         log2vis_list[lpos - bidi_start] += delta;
 365                         log2vis_list[old_lpos - bidi_start] += delta;
 366                 }
 367                 while (level < new_level)
 368                         stack[level++] = lpos;
 369         }
 370
 371         while (level > 0) {
 372                 pos_type const old_lpos = stack[--level];
 373                 int delta = bidi_end - old_lpos;
 374                 if (level % 2)
 375                         delta = -delta;
 376                 log2vis_list[old_lpos - bidi_start] += delta;
 377         }
 378
 379         pos_type vpos = bidi_start - 1;
 380         for (pos_type lpos = bidi_start;
 381              lpos <= bidi_end; ++lpos) {
 382                 vpos += log2vis_list[lpos - bidi_start];
 383                 vis2log_list[vpos - bidi_start] = lpos;
 384                 log2vis_list[lpos - bidi_start] = vpos;
 385         }
 386 }
 387
 388
 389 // This method requires a previous call to ComputeBidiTables()
 390 bool LyXText::isBoundary(Buffer const * buf, Paragraph * par,
 391                          pos_type pos) const
 392 {
 393         if (!lyxrc.rtl_support || pos == 0)
 394                 return false;
 395
 396         if (!bidi_InRange(pos - 1)) {
 397                 /// This can happen if pos is the first char of a row.
 398                 /// Returning false in this case is incorrect!
 399                 return false;
 400         }
 401
 402         bool const rtl = bidi_level(pos - 1) % 2;
 403         bool const rtl2 = bidi_InRange(pos)
 404                 ? bidi_level(pos) % 2
 405                 : par->isRightToLeftPar(buf->params);
 406         return rtl != rtl2;
 407 }
 408
 409
 410 bool LyXText::isBoundary(Buffer const * buf, Paragraph * par,
 411                          pos_type pos, LyXFont const & font) const
 412 {
 413         if (!lyxrc.rtl_support)
 414                 return false;    // This is just for speedup
 415
 416         bool const rtl = font.isVisibleRightToLeft();
 417         bool const rtl2 = bidi_InRange(pos)
 418                 ? bidi_level(pos) % 2
 419                 : par->isRightToLeftPar(buf->params);
 420         return rtl != rtl2;
 421 }
 422
 423 void LyXText::drawNewline(DrawRowParams & p, pos_type const pos)
 424 {
 425         // Draw end-of-line marker
 426         LyXFont const font = getFont(p.bv->buffer(), p.row->par(), pos);
 427         int const wid = lyxfont::width('n', font);
 428         int const asc = lyxfont::maxAscent(font);
 429         int const y = p.yo + p.row->baseline();
 430         int xp[3];
 431         int yp[3];
 432
 433         yp[0] = int(y - 0.875 * asc * 0.75);
 434         yp[1] = int(y - 0.500 * asc * 0.75);
 435         yp[2] = int(y - 0.125 * asc * 0.75);
 436
 437         if (bidi_level(pos) % 2 == 0) {
 438                 xp[0] = int(p.x + wid * 0.375);
 439                 xp[1] = int(p.x);
 440                 xp[2] = int(p.x + wid * 0.375);
 441         } else {
 442                 xp[0] = int(p.x + wid * 0.625);
 443                 xp[1] = int(p.x + wid);
 444                 xp[2] = int(p.x + wid * 0.625);
 445         }
 446
 447         p.pain->lines(xp, yp, 3, LColor::eolmarker);
 448
 449         yp[0] = int(y - 0.500 * asc * 0.75);
 450         yp[1] = int(y - 0.500 * asc * 0.75);
 451         yp[2] = int(y - asc * 0.75);
 452
 453         if (bidi_level(pos) % 2 == 0) {
 454                 xp[0] = int(p.x);
 455                 xp[1] = int(p.x + wid);
 456                 xp[2] = int(p.x + wid);
 457         } else {
 458                 xp[0] = int(p.x + wid);
 459                 xp[1] = int(p.x);
 460                 xp[2] = int(p.x);
 461         }
 462
 463         p.pain->lines(xp, yp, 3, LColor::eolmarker);
 464
 465         p.x += wid;
 466 }
 467
 468
 469 void LyXText::drawInset(DrawRowParams & p, pos_type const pos)
 470 {
 471         Inset * inset = p.row->par()->getInset(pos);
 472
 473         // FIXME: shouldn't happen
 474         if (!inset) {
 475                 return;
 476         }
 477
 478         LyXFont const & font = getFont(p.bv->buffer(), p.row->par(), pos);
 479
 480         inset->update(p.bv, font, false);
 481         inset->draw(p.bv, font, p.yo + p.row->baseline(), p.x, p.cleared);
 482
 483         if (!need_break_row && !inset_owner
 484                 && p.bv->text->status() == CHANGED_IN_DRAW) {
 485                 Row * prev = p.row->previous();
 486                 if (prev && prev->par() == p.row->par()) {
 487                         breakAgainOneRow(p.bv, prev);
 488                 }
 489                 setCursor(p.bv, cursor.par(), cursor.pos());
 490                 need_break_row = p.row;
 491         }
 492 }
 493
 494
 495 void LyXText::drawForeignMark(DrawRowParams & p, float const orig_x, LyXFont const & orig_font)
 496 {
 497         if (!lyxrc.mark_foreign_language)
 498                 return;
 499         if (orig_font.language() == latex_language)
 500                 return;
 501         if (orig_font.language() == p.bv->buffer()->params.language)
 502                 return;
 503
 504         int const y = p.yo + p.row->height() - 1;
 505         p.pain->line(int(orig_x), y, int(p.x), y, LColor::language);
 506 }
 507
 508
 509 void LyXText::drawHebrewComposeChar(DrawRowParams & p, pos_type & vpos)
 510 {
 511         pos_type pos = vis2log(vpos);
 512
 513         string str;
 514
 515         // first char
 516         char c = p.row->par()->getChar(pos);
 517         str += c;
 518         ++vpos;
 519
 520         LyXFont const & font = getFont(p.bv->buffer(), p.row->par(), pos);
 521         int const width = lyxfont::width(c, font);
 522         int dx = 0;
 523
 524         for (pos_type i = pos-1; i >= 0; --i) {
 525                 c = p.row->par()->getChar(i);
 526                 if (!Encodings::IsComposeChar_hebrew(c)) {
 527                         if (IsPrintableNonspace(c)) {
 528                                 int const width2 =
 529                                         singleWidth(p.bv, p.row->par(), i, c);
 530                                 // dalet / resh
 531                                 dx = (c == 'ø' || c == 'ã')
 532                                         ? width2 - width
 533                                         : (width2 - width) / 2;
 534                         }
 535                         break;
 536                 }
 537         }
 538
 539         // Draw nikud
 540         p.pain->text(int(p.x) + dx, p.yo + p.row->baseline(), str, font);
 541 }
 542
 543
 544 void LyXText::drawArabicComposeChar(DrawRowParams & p, pos_type & vpos)
 545 {
 546         pos_type pos = vis2log(vpos);
 547         string str;
 548
 549         // first char
 550         char c = p.row->par()->getChar(pos);
 551         c = transformChar(c, p.row->par(), pos);
 552         str +=c;
 553         ++vpos;
 554
 555         LyXFont const & font = getFont(p.bv->buffer(), p.row->par(), pos);
 556         int const width = lyxfont::width(c, font);
 557         int dx = 0;
 558
 559         for (pos_type i = pos-1; i >= 0; --i) {
 560                 c = p.row->par()->getChar(i);
 561                 if (!Encodings::IsComposeChar_arabic(c)) {
 562                         if (IsPrintableNonspace(c)) {
 563                                 int const width2 =
 564                                         singleWidth(p.bv, p.row->par(), i, c);
 565                                 dx = (width2 - width) / 2;
 566                         }
 567                         break;
 568                 }
 569         }
 570         // Draw nikud
 571         p.pain->text(int(p.x) + dx, p.yo + p.row->baseline(), str, font);
 572 }
 573
 574
 575 void LyXText::drawChars(DrawRowParams & p, pos_type & vpos,
 576         bool hebrew, bool arabic)
 577 {
 578         pos_type pos = vis2log(vpos);
 579         pos_type const last = rowLastPrintable(p.row);
 580         LyXFont const & orig_font = getFont(p.bv->buffer(), p.row->par(), pos);
 581
 582         // first character
 583         string str;
 584         str += p.row->par()->getChar(pos);
 585         if (arabic) {
 586                 unsigned char c = str[0];
 587                 str[0] = transformChar(c, p.row->par(), pos);
 588         }
 589         ++vpos;
 590
 591         // collect as much similar chars as we can
 592         while (vpos <= last && (pos = vis2log(vpos)) >= 0) {
 593                 char c = p.row->par()->getChar(pos);
 594
 595                 if (!IsPrintableNonspace(c))
 596                         break;
 597
 598                 if (arabic && Encodings::IsComposeChar_arabic(c))
 599                         break;
 600                 if (hebrew && Encodings::IsComposeChar_hebrew(c))
 601                         break;
 602
 603                 if (orig_font != getFont(p.bv->buffer(), p.row->par(), pos))
 604                         break;
 605
 606                 str += c;
 607                 ++vpos;
 608         }
 609
 610         // Draw text and set the new x position
 611         p.pain->text(int(p.x), p.yo + p.row->baseline(), str, orig_font);
 612         p.x += lyxfont::width(str, orig_font);
 613 }
 614
 615
 616 void LyXText::draw(DrawRowParams & p, pos_type & vpos)
 617 {
 618         pos_type const pos = vis2log(vpos);
 619         Paragraph * par = p.row->par();
 620
 621         LyXFont const & orig_font = getFont(p.bv->buffer(), par, pos);
 622
 623         float const orig_x = p.x;
 624
 625         char const c = par->getChar(pos);
 626
 627         if (IsNewlineChar(c)) {
 628                 ++vpos;
 629                 drawNewline(p, pos);
 630                 return;
 631         } else if (IsInsetChar(c)) {
 632                 drawInset(p, pos);
 633                 ++vpos;
 634                 drawForeignMark(p, orig_x, orig_font);
 635                 return;
 636         }
 637
 638         // usual characters, no insets
 639
 640         // special case languages
 641         bool const hebrew = (orig_font.language()->lang() == "hebrew");
 642         bool const arabic =
 643                 orig_font.language()->lang() == "arabic" &&
 644                 (lyxrc.font_norm_type == LyXRC::ISO_8859_6_8 ||
 645                 lyxrc.font_norm_type == LyXRC::ISO_10646_1);
 646
 647         // draw as many chars as we can
 648         if ((!hebrew && !arabic)
 649                 || (hebrew && !Encodings::IsComposeChar_hebrew(c))
 650                 || (arabic && !Encodings::IsComposeChar_arabic(c))) {
 651                 drawChars(p, vpos, true, false);
 652         } else if (hebrew) {
 653                 drawHebrewComposeChar(p, vpos);
 654         } else if (arabic) {
 655                 drawArabicComposeChar(p, vpos);
 656         }
 657
 658         drawForeignMark(p, orig_x, orig_font);
 659
 660 #ifdef INHERIT_LANGUAGE
 661 #ifdef WITH_WARNINGS
 662         if ((font.language() == inherit_language) ||
 663                 (font.language() == ignore_language))
 664                 lyxerr << "No this shouldn't happen!\n";
 665 #endif
 666 #endif
 667 }
 668
 669
 670 // Returns the left beginning of the text.
 671 // This information cannot be taken from the layouts-objekt, because in
 672 // LaTeX the beginning of the text fits in some cases (for example sections)
 673 // exactly the label-width.
 674 int LyXText::leftMargin(BufferView * bview, Row const * row) const
 675 {
 676         LyXTextClass const & tclass =
 677                 textclasslist.TextClass(bview->buffer()->params.textclass);
 678         LyXLayout const & layout = tclass[row->par()->getLayout()];
 679
 680         string parindent = layout.parindent;
 681
 682         int x = LYX_PAPER_MARGIN;
 683
 684         x += lyxfont::signedWidth(tclass.leftmargin(), tclass.defaultfont());
 685
 686         // this is the way, LyX handles the LaTeX-Environments.
 687         // I have had this idea very late, so it seems to be a
 688         // later added hack and this is true
 689         if (!row->par()->getDepth()) {
 690                 if (!row->par()->getLayout()) {
 691                         // find the previous same level paragraph
 692                         if (row->par()->previous()) {
 693                                 Paragraph * newpar = row->par()
 694                                         ->depthHook(row->par()->getDepth());
 695                                 if (newpar &&
 696                                     tclass[newpar->getLayout()].nextnoindent)
 697                                         parindent.erase();
 698                         }
 699                 }
 700         } else {
 701                 // find the next level paragraph
 702
 703                 Paragraph * newpar =
 704                         row->par()->outerHook();
 705
 706                 // make a corresponding row. Needed to call LeftMargin()
 707
 708                 // check wether it is a sufficent paragraph
 709                 if (newpar && tclass[newpar->getLayout()].isEnvironment())
 710                 {
 711                         Row dummyrow;
 712                         dummyrow.par(newpar);
 713                         dummyrow.pos(newpar->size());
 714                         x = leftMargin(bview, &dummyrow);
 715                 } else {
 716                         // this is no longer an error, because this function
 717                         // is used to clear impossible depths after changing
 718                         // a layout. Since there is always a redo,
 719                         // LeftMargin() is always called
 720                         row->par()->params().depth(0);
 721                 }
 722
 723                 if (newpar && !row->par()->getLayout()) {
 724                         if (newpar->params().noindent())
 725                                 parindent.erase();
 726                         else
 727                                 parindent = tclass[newpar->getLayout()].parindent;
 728                 }
 729
 730         }
 731
 732         LyXFont const labelfont = getLabelFont(bview->buffer(), row->par());
 733         switch (layout.margintype) {
 734         case MARGIN_DYNAMIC:
 735                 if (!layout.leftmargin.empty()) {
 736                         x += lyxfont::signedWidth(layout.leftmargin,
 737                                                   tclass.defaultfont());
 738                 }
 739                 if (!row->par()->getLabelstring().empty()) {
 740                         x += lyxfont::signedWidth(layout.labelindent,
 741                                                   labelfont);
 742                         x += lyxfont::width(row->par()->getLabelstring(),
 743                                             labelfont);
 744                         x += lyxfont::width(layout.labelsep, labelfont);
 745                 }
 746                 break;
 747         case MARGIN_MANUAL:
 748                 x += lyxfont::signedWidth(layout.labelindent, labelfont);
 749                 if (row->pos() >= beginningOfMainBody(bview->buffer(), row->par())) {
 750                         if (!row->par()->getLabelWidthString().empty()) {
 751                                 x += lyxfont::width(row->par()->getLabelWidthString(),
 752                                                labelfont);
 753                                 x += lyxfont::width(layout.labelsep, labelfont);
 754                         }
 755                 }
 756                 break;
 757         case MARGIN_STATIC:
 758                 x += lyxfont::signedWidth(layout.leftmargin, tclass.defaultfont()) * 4
 759                         / (row->par()->getDepth() + 4);
 760                 break;
 761         case MARGIN_FIRST_DYNAMIC:
 762                 if (layout.labeltype == LABEL_MANUAL) {
 763                         if (row->pos() >= beginningOfMainBody(bview->buffer(), row->par())) {
 764                                 x += lyxfont::signedWidth(layout.leftmargin,
 765                                                           labelfont);
 766                         } else {
 767                                 x += lyxfont::signedWidth(layout.labelindent,
 768                                                           labelfont);
 769                         }
 770                 } else if (row->pos()
 771                            // Special case to fix problems with
 772                            // theorems (JMarc)
 773                            || (layout.labeltype == LABEL_STATIC
 774                                && layout.latextype == LATEX_ENVIRONMENT
 775                                && ! row->par()->isFirstInSequence())) {
 776                         x += lyxfont::signedWidth(layout.leftmargin,
 777                                                   labelfont);
 778                 } else if (layout.labeltype != LABEL_TOP_ENVIRONMENT
 779                            && layout.labeltype != LABEL_BIBLIO
 780                            && layout.labeltype !=
 781                            LABEL_CENTERED_TOP_ENVIRONMENT) {
 782                         x += lyxfont::signedWidth(layout.labelindent,
 783                                                   labelfont);
 784                         x += lyxfont::width(layout.labelsep, labelfont);
 785                         x += lyxfont::width(row->par()->getLabelstring(),
 786                                             labelfont);
 787                 }
 788                 break;
 789
 790         case MARGIN_RIGHT_ADDRESS_BOX:
 791         {
 792                 // ok, a terrible hack. The left margin depends on the widest
 793                 // row in this paragraph. Do not care about footnotes, they
 794                 // are *NOT* allowed in the LaTeX realisation of this layout.
 795
 796                 // find the first row of this paragraph
 797                 Row const * tmprow = row;
 798                 while (tmprow->previous()
 799                        && tmprow->previous()->par() == row->par())
 800                         tmprow = tmprow->previous();
 801
 802                 int minfill = tmprow->fill();
 803                 while (tmprow->next() && tmprow->next()->par() == row->par()) {
 804                         tmprow = tmprow->next();
 805                         if (tmprow->fill() < minfill)
 806                                 minfill = tmprow->fill();
 807                 }
 808
 809                 x += lyxfont::signedWidth(layout.leftmargin,
 810                                           tclass.defaultfont());
 811                 x += minfill;
 812         }
 813         break;
 814         }
 815
 816         LyXAlignment align; // wrong type
 817
 818         if (row->par()->params().align() == LYX_ALIGN_LAYOUT)
 819                 align = layout.align;
 820         else
 821                 align = row->par()->params().align();
 822
 823         // set the correct parindent
 824         if (row->pos() == 0) {
 825                 if ((layout.labeltype == LABEL_NO_LABEL
 826                      || layout.labeltype == LABEL_TOP_ENVIRONMENT
 827                      || layout.labeltype == LABEL_CENTERED_TOP_ENVIRONMENT
 828                      || (layout.labeltype == LABEL_STATIC
 829                          && layout.latextype == LATEX_ENVIRONMENT
 830                          && ! row->par()->isFirstInSequence()))
 831                     && align == LYX_ALIGN_BLOCK
 832                     && !row->par()->params().noindent()
 833                     && (row->par()->layout ||
 834                         bview->buffer()->params.paragraph_separation ==
 835                         BufferParams::PARSEP_INDENT))
 836                         x += lyxfont::signedWidth(parindent,
 837                                                   tclass.defaultfont());
 838                 else if (layout.labeltype == LABEL_BIBLIO) {
 839                         // ale970405 Right width for bibitems
 840                         x += bibitemMaxWidth(bview, tclass.defaultfont());
 841                 }
 842         }
 843         return x;
 844 }
 845
 846
 847 int LyXText::rightMargin(Buffer const * buf, Row const * row) const
 848 {
 849         LyXTextClass const & tclass =
 850                 textclasslist.TextClass(buf->params.textclass);
 851         LyXLayout const & layout = tclass[row->par()->getLayout()];
 852
 853         int x = LYX_PAPER_MARGIN
 854                 + lyxfont::signedWidth(tclass.rightmargin(),
 855                                        tclass.defaultfont());
 856
 857         // this is the way, LyX handles the LaTeX-Environments.
 858         // I have had this idea very late, so it seems to be a
 859         // later added hack and this is true
 860         if (row->par()->getDepth()) {
 861                 // find the next level paragraph
 862
 863                 Paragraph * newpar = row->par();
 864
 865                 do {
 866                         newpar = newpar->previous();
 867                 } while (newpar
 868                          && newpar->getDepth() >= row->par()->getDepth());
 869
 870                 // make a corresponding row. Needed to call LeftMargin()
 871
 872                 // check wether it is a sufficent paragraph
 873                 if (newpar
 874                     && tclass[newpar->getLayout()].isEnvironment()) {
 875                         Row dummyrow;
 876                         dummyrow.par(newpar);
 877                         dummyrow.pos(0);
 878                         x = rightMargin(buf, &dummyrow);
 879                 } else {
 880                         // this is no longer an error, because this function
 881                         // is used to clear impossible depths after changing
 882                         // a layout. Since there is always a redo,
 883                         // LeftMargin() is always called
 884                         row->par()->params().depth(0);
 885                 }
 886         }
 887
 888         //lyxerr << "rightmargin: " << layout->rightmargin << endl;
 889         x += lyxfont::signedWidth(layout.rightmargin, tclass.defaultfont())
 890                 * 4 / (row->par()->getDepth() + 4);
 891         return x;
 892 }
 893
 894
 895 int LyXText::labelEnd(BufferView * bview, Row const * row) const
 896 {
 897         if (textclasslist.Style(bview->buffer()->params.textclass,
 898                                 row->par()->getLayout()).margintype
 899             == MARGIN_MANUAL) {
 900                 Row tmprow;
 901                 tmprow = *row;
 902                 tmprow.pos(row->par()->size());
 903                 return leftMargin(bview, &tmprow);  /* just the beginning
 904                                                 of the main body */
 905         } else
 906                 return 0;  /* LabelEnd is only needed, if the
 907                               layout fills a flushleft
 908                               label. */
 909 }
 910
 911
 912 // get the next breakpoint in a given paragraph
 913 pos_type
 914 LyXText::nextBreakPoint(BufferView * bview, Row const * row, int width) const
 915 {
 916         Paragraph * par = row->par();
 917
 918         if (width < 0)
 919                 return par->size();
 920
 921         pos_type const pos = row->pos();
 922
 923         // position of the last possible breakpoint
 924         // -1 isn't a suitable value, but a flag
 925         pos_type last_separator = -1;
 926         width -= rightMargin(bview->buffer(), row);
 927
 928         pos_type const main_body =
 929                 beginningOfMainBody(bview->buffer(), par);
 930         LyXLayout const & layout =
 931                 textclasslist.Style(bview->buffer()->params.textclass,
 932                                     par->getLayout());
 933         pos_type i = pos;
 934
 935         if (layout.margintype == MARGIN_RIGHT_ADDRESS_BOX) {
 936                 /* special code for right address boxes, only newlines count */
 937                 while (i < par->size()) {
 938                         if (par->isNewline(i)) {
 939                                 last_separator = i;
 940                                 i = par->size() - 1; // this means break
 941                                 //x = width;
 942                         } else if (par->isInset(i) && par->getInset(i)
 943                                 && par->getInset(i)->display()) {
 944                                 par->getInset(i)->display(false);
 945                         }
 946                         ++i;
 947                 }
 948         } else {
 949                 // Last position is an invariant
 950                 pos_type const last =
 951                         par->size();
 952                 // this is the usual handling
 953                 int x = leftMargin(bview, row);
 954                 bool doitonetime = true;
 955                 while (doitonetime || ((x < width) && (i < last))) {
 956                         doitonetime = false;
 957                         char const c = par->getChar(i);
 958                         if (IsNewlineChar(c)) {
 959                                 last_separator = i;
 960                                 x = width; // this means break
 961                         } else if (c == Paragraph::META_INSET &&
 962                                    par->getInset(i)) {
 963
 964                                 // check wether a Display() inset is
 965                                 // valid here. if not, change it to
 966                                 // non-display
 967                                 if (par->getInset(i)->display() &&
 968                                     (layout.isCommand() ||
 969                                      (layout.labeltype == LABEL_MANUAL
 970                                       && i < beginningOfMainBody(bview->buffer(), par))))
 971                                 {
 972                                         // display istn't allowd
 973                                         par->getInset(i)->display(false);
 974                                         x += singleWidth(bview, par, i, c);
 975                                 } else if (par->getInset(i)->display() ||
 976                                            par->getInset(i)->needFullRow())
 977                                 {
 978                                         // So break the line here
 979                                         if (i == pos) {
 980                                                 if (pos < last-1) {
 981                                                         last_separator = i;
 982                                                         if (IsLineSeparatorChar(par->getChar(i+1)))
 983                                                                 ++last_separator;
 984                                                 } else
 985                                                         last_separator = last; // to avoid extra rows
 986                                         } else
 987                                                 last_separator = i - 1;
 988                                         x = width;  // this means break
 989                                 } else {
 990                                         x += singleWidth(bview, par, i, c);
 991                                         // we have to check this separately as we could have a
 992                                         // lineseparator and then the algorithm below would prefer
 993                                         // that which IS wrong! We should always break on an inset
 994                                         // if it's too long and not on the last separator.
 995                                         // Maybe the only exeption is insets used as chars but
 996                                         // then we would have to have a special function inside
 997                                         // the inset to tell us this. Till then we leave it as
 998                                         // it is now. (Jug 20020106)
 999                                         if (pos < i && x >= width && last_separator >= 0)
1000                                                 last_separator = i - 1;
1001                                 }
1002                         } else  {
1003                                 if (IsLineSeparatorChar(c))
1004                                         last_separator = i;
1005                                 x += singleWidth(bview, par, i, c);
1006                         }
1007                         ++i;
1008                         if (i == main_body) {
1009                                 x += lyxfont::width(layout.labelsep,
1010                                                     getLabelFont(bview->buffer(), par));
1011                                 if (par->isLineSeparator(i - 1))
1012                                         x-= singleWidth(bview, par, i - 1);
1013                                 int left_margin = labelEnd(bview, row);
1014                                 if (x < left_margin)
1015                                         x = left_margin;
1016                         }
1017                 }
1018                 if ((pos+1 < i) && (last_separator < 0) && (x >= width))
1019                         last_separator = i - 2;
1020                 else if ((pos < i) && (last_separator < 0) && (x >= width))
1021                         last_separator = i - 1;
1022                 // end of paragraph is always a suitable separator
1023                 else if (i == last && x < width)
1024                         last_separator = i;
1025         }
1026
1027         // well, if last_separator is still 0, the line isn't breakable.
1028         // don't care and cut simply at the end
1029         if (last_separator < 0) {
1030                 last_separator = i;
1031         }
1032
1033         // manual labels cannot be broken in LaTeX, do not care
1034         if (main_body && last_separator < main_body)
1035                 last_separator = main_body - 1;
1036
1037         lyxerr << last_separator << ":" << pos << endl;
1038         return last_separator;
1039 }
1040
1041
1042 // returns the minimum space a row needs on the screen in pixel
1043 int LyXText::fill(BufferView * bview, Row * row, int paper_width) const
1044 {
1045         if (paper_width < 0)
1046                 return 0;
1047
1048         int w;
1049         // get the pure distance
1050         pos_type const last = rowLastPrintable(row);
1051
1052         // special handling of the right address boxes
1053         if (textclasslist.Style(bview->buffer()->params.textclass,
1054                                 row->par()->getLayout()).margintype
1055             == MARGIN_RIGHT_ADDRESS_BOX)
1056         {
1057                 int const tmpfill = row->fill();
1058                 row->fill(0); // the minfill in MarginLeft()
1059                 w = leftMargin(bview, row);
1060                 row->fill(tmpfill);
1061         } else
1062                 w = leftMargin(bview, row);
1063
1064         LyXLayout const & layout = textclasslist.Style(bview->buffer()->params.textclass,
1065                                                        row->par()->getLayout());
1066         pos_type const main_body =
1067                 beginningOfMainBody(bview->buffer(), row->par());
1068         pos_type i = row->pos();
1069
1070         while (i <= last) {
1071                 if (main_body > 0 && i == main_body) {
1072                         w += lyxfont::width(layout.labelsep, getLabelFont(bview->buffer(), row->par()));
1073                         if (row->par()->isLineSeparator(i - 1))
1074                                 w -= singleWidth(bview, row->par(), i - 1);
1075                         int left_margin = labelEnd(bview, row);
1076                         if (w < left_margin)
1077                                 w = left_margin;
1078                 }
1079                 w += singleWidth(bview, row->par(), i);
1080                 ++i;
1081         }
1082         if (main_body > 0 && main_body > last) {
1083                 w += lyxfont::width(layout.labelsep, getLabelFont(bview->buffer(), row->par()));
1084                 if (last >= 0 && row->par()->isLineSeparator(last))
1085                         w -= singleWidth(bview, row->par(), last);
1086                 int const left_margin = labelEnd(bview, row);
1087                 if (w < left_margin)
1088                         w = left_margin;
1089         }
1090
1091         int const fill = paper_width - w - rightMargin(bview->buffer(), row);
1092         return fill;
1093 }
1094
1095
1096 // returns the minimum space a manual label needs on the screen in pixel
1097 int LyXText::labelFill(BufferView * bview, Row const * row) const
1098 {
1099         pos_type last = beginningOfMainBody(bview->buffer(), row->par()) - 1;
1100         // -1 because a label ends either with a space that is in the label,
1101         // or with the beginning of a footnote that is outside the label.
1102
1103         // I don't understand this code in depth, but sometimes "last" is
1104         // less than 0 and this causes a crash. This fix seems to work
1105         // correctly, but I bet the real error is elsewhere.  The bug is
1106         // triggered when you have an open footnote in a paragraph
1107         // environment with a manual label. (Asger)
1108         if (last < 0) last = 0;
1109
1110         if (row->par()->isLineSeparator(last)) /* a sepearator at this end
1111                                                 does not count */
1112                 --last;
1113
1114         int w = 0;
1115         pos_type i = row->pos();
1116         while (i <= last) {
1117                 w += singleWidth(bview, row->par(), i);
1118                 ++i;
1119         }
1120
1121         int fill = 0;
1122         if (!row->par()->params().labelWidthString().empty()) {
1123                 fill = max(lyxfont::width(row->par()->params().labelWidthString(),
1124                                           getLabelFont(bview->buffer(), row->par())) - w,
1125                            0);
1126         }
1127
1128         return fill;
1129 }
1130
1131
1132 // returns the number of separators in the specified row. The separator
1133 // on the very last column doesnt count
1134 int LyXText::numberOfSeparators(Buffer const * buf, Row const * row) const
1135 {
1136         pos_type const last = rowLast(row);
1137         pos_type p = max(row->pos(), beginningOfMainBody(buf, row->par()));
1138         int n = 0;
1139         for (; p < last; ++p) {
1140                 if (row->par()->isSeparator(p)) {
1141                         ++n;
1142                 }
1143         }
1144         return n;
1145 }
1146
1147
1148 // returns the number of hfills in the specified row. The LyX-Hfill is
1149 // a LaTeX \hfill so that the hfills at the beginning and at the end were
1150 // ignored. This is *MUCH* more usefull than not to ignore!
1151 int LyXText::numberOfHfills(Buffer const * buf, Row const * row) const
1152 {
1153         pos_type const last = rowLast(row);
1154         pos_type first = row->pos();
1155
1156         if (first) { /* hfill *DO* count at the beginning
1157                       * of paragraphs! */
1158                 while (first <= last && row->par()->isHfill(first)) {
1159                         ++first;
1160                 }
1161         }
1162
1163         first = max(first, beginningOfMainBody(buf, row->par()));
1164         int n = 0;
1165         for (pos_type p = first; p <= last; ++p) {
1166                 // last, because the end is ignored!
1167
1168                 if (row->par()->isHfill(p)) {
1169                         ++n;
1170                 }
1171         }
1172         return n;
1173 }
1174
1175
1176 // like NumberOfHfills, but only those in the manual label!
1177 int LyXText::numberOfLabelHfills(Buffer const * buf, Row const * row) const
1178 {
1179         pos_type last = rowLast(row);
1180         pos_type first = row->pos();
1181         if (first) { /* hfill *DO* count at the beginning
1182                       * of paragraphs! */
1183                 while (first < last && row->par()->isHfill(first))
1184                         ++first;
1185         }
1186
1187         last = min(last, beginningOfMainBody(buf, row->par()));
1188         int n = 0;
1189         for (pos_type p = first; p < last; ++p) {
1190                 // last, because the end is ignored!
1191                 if (row->par()->isHfill(p)) {
1192                         ++n;
1193                 }
1194         }
1195         return n;
1196 }
1197
1198
1199 // returns true, if a expansion is needed.
1200 // Rules are given by LaTeX
1201 bool LyXText::hfillExpansion(Buffer const * buf, Row const * row_ptr,
1202                              pos_type pos) const
1203 {
1204         // by the way, is it a hfill?
1205         if (!row_ptr->par()->isHfill(pos))
1206                 return false;
1207
1208         // at the end of a row it does not count
1209         // unless another hfill exists on the line
1210         if (pos >= rowLast(row_ptr)) {
1211                 pos_type i = row_ptr->pos();
1212                 while (i < pos && !row_ptr->par()->isHfill(i)) {
1213                         ++i;
1214                 }
1215                 if (i == pos) {
1216                         return false;
1217                 }
1218         }
1219
1220         // at the beginning of a row it does not count, if it is not
1221         // the first row of a paragaph
1222         if (!row_ptr->pos())
1223                 return true;
1224
1225         // in some labels  it does not count
1226         if (textclasslist.Style(buf->params.textclass,
1227                                 row_ptr->par()->getLayout()).margintype
1228             != MARGIN_MANUAL
1229             && pos < beginningOfMainBody(buf, row_ptr->par()))
1230                 return false;
1231
1232         // if there is anything between the first char of the row and
1233         // the sepcified position that is not a newline and not a hfill,
1234         // the hfill will count, otherwise not
1235         pos_type i = row_ptr->pos();
1236         while (i < pos && (row_ptr->par()->isNewline(i)
1237                            || row_ptr->par()->isHfill(i)))
1238                 ++i;
1239
1240         return i != pos;
1241 }
1242
1243
1244 LColor::color LyXText::backgroundColor()
1245 {
1246         if (inset_owner)
1247                 return inset_owner->backgroundColor();
1248         else
1249                 return LColor::background;
1250 }
1251
1252 void LyXText::setHeightOfRow(BufferView * bview, Row * row_ptr) const
1253 {
1254         /* get the maximum ascent and the maximum descent */
1255         int asc = 0;
1256         int desc = 0;
1257         float layoutasc = 0;
1258         float layoutdesc = 0;
1259         float tmptop = 0;
1260         LyXFont tmpfont;
1261         Inset * tmpinset = 0;
1262
1263         /* ok , let us initialize the maxasc and maxdesc value.
1264          * This depends in LaTeX of the font of the last character
1265          * in the paragraph. The hack below is necessary because
1266          * of the possibility of open footnotes */
1267
1268         /* Correction: only the fontsize count. The other properties
1269            are taken from the layoutfont. Nicer on the screen :) */
1270         Paragraph * par = row_ptr->par();
1271         Paragraph * firstpar = row_ptr->par();
1272
1273         LyXLayout const & layout = textclasslist.Style(bview->buffer()->params.textclass,
1274                                                        firstpar->getLayout());
1275
1276         // as max get the first character of this row then it can increes but not
1277         // decrees the height. Just some point to start with so we don't have to
1278         // do the assignment below too often.
1279         LyXFont font = getFont(bview->buffer(), par, row_ptr->pos());
1280         LyXFont::FONT_SIZE const tmpsize = font.size();
1281         font = getLayoutFont(bview->buffer(), par);
1282         LyXFont::FONT_SIZE const size = font.size();
1283         font.setSize(tmpsize);
1284
1285         LyXFont labelfont = getLabelFont(bview->buffer(), par);
1286
1287         float spacing_val = 1.0;
1288         if (!row_ptr->par()->params().spacing().isDefault()) {
1289                 spacing_val = row_ptr->par()->params().spacing().getValue();
1290         } else {
1291                 spacing_val = bview->buffer()->params.spacing.getValue();
1292         }
1293         //lyxerr << "spacing_val = " << spacing_val << endl;
1294
1295         int maxasc = int(lyxfont::maxAscent(font) *
1296                          layout.spacing.getValue() *
1297                          spacing_val);
1298         int maxdesc = int(lyxfont::maxDescent(font) *
1299                           layout.spacing.getValue() *
1300                           spacing_val);
1301         pos_type const pos_end = rowLast(row_ptr);
1302         int labeladdon = 0;
1303         int maxwidth = 0;
1304
1305         // Check if any insets are larger
1306         for (pos_type pos = row_ptr->pos(); pos <= pos_end; ++pos) {
1307                 if (row_ptr->par()->isInset(pos)) {
1308                         tmpfont = getFont(bview->buffer(), row_ptr->par(), pos);
1309                         tmpinset = row_ptr->par()->getInset(pos);
1310                         if (tmpinset) {
1311 #if 1 // this is needed for deep update on initialitation
1312                                 tmpinset->update(bview, tmpfont);
1313 #endif
1314                                 asc = tmpinset->ascent(bview, tmpfont);
1315                                 desc = tmpinset->descent(bview, tmpfont);
1316                                 maxwidth += tmpinset->width(bview, tmpfont);
1317                                 maxasc = max(maxasc, asc);
1318                                 maxdesc = max(maxdesc, desc);
1319                         }
1320                 } else {
1321                         maxwidth += singleWidth(bview, row_ptr->par(), pos);
1322                 }
1323         }
1324
1325         // Check if any custom fonts are larger (Asger)
1326         // This is not completely correct, but we can live with the small,
1327         // cosmetic error for now.
1328         LyXFont::FONT_SIZE maxsize =
1329                 row_ptr->par()->highestFontInRange(row_ptr->pos(), pos_end, size);
1330         if (maxsize > font.size()) {
1331                 font.setSize(maxsize);
1332
1333                 asc = lyxfont::maxAscent(font);
1334                 desc = lyxfont::maxDescent(font);
1335                 if (asc > maxasc)
1336                         maxasc = asc;
1337                 if (desc > maxdesc)
1338                         maxdesc = desc;
1339         }
1340
1341         // This is nicer with box insets:
1342         ++maxasc;
1343         ++maxdesc;
1344
1345         row_ptr->ascent_of_text(maxasc);
1346
1347         // is it a top line?
1348         if (!row_ptr->pos() && (row_ptr->par() == firstpar)) {
1349
1350                 // some parksips VERY EASY IMPLEMENTATION
1351                 if (bview->buffer()->params.paragraph_separation ==
1352                         BufferParams::PARSEP_SKIP)
1353                 {
1354                         if (layout.isParagraph()
1355                                 && firstpar->getDepth() == 0
1356                                 && firstpar->previous())
1357                         {
1358                                 maxasc += bview->buffer()->params.getDefSkip().inPixels(bview);
1359                         } else if (firstpar->previous() &&
1360                                    textclasslist.Style(bview->buffer()->params.textclass,
1361                                                        firstpar->previous()->
1362                                                        getLayout()).isParagraph() &&
1363                                    firstpar->previous()->getDepth() == 0)
1364                         {
1365                                 // is it right to use defskip here too? (AS)
1366                                 maxasc += bview->buffer()->params.getDefSkip().inPixels(bview);
1367                         }
1368                 }
1369
1370                 // the paper margins
1371                 if (!row_ptr->par()->previous() && bv_owner)
1372                         maxasc += LYX_PAPER_MARGIN;
1373
1374                 // add the vertical spaces, that the user added
1375                 maxasc += getLengthMarkerHeight(bview, firstpar->params().spaceTop());
1376
1377                 // do not forget the DTP-lines!
1378                 // there height depends on the font of the nearest character
1379                 if (firstpar->params().lineTop())
1380                         maxasc += 2 * lyxfont::ascent('x', getFont(bview->buffer(),
1381                                                                    firstpar, 0));
1382
1383                 // and now the pagebreaks
1384                 if (firstpar->params().pagebreakTop())
1385                         maxasc += 3 * defaultHeight();
1386
1387                 // This is special code for the chapter, since the label of this
1388                 // layout is printed in an extra row
1389                 if (layout.labeltype == LABEL_COUNTER_CHAPTER
1390                         && bview->buffer()->params.secnumdepth >= 0)
1391                 {
1392                         float spacing_val = 1.0;
1393                         if (!row_ptr->par()->params().spacing().isDefault()) {
1394                                 spacing_val = row_ptr->par()->params().spacing().getValue();
1395                         } else {
1396                                 spacing_val = bview->buffer()->params.spacing.getValue();
1397                         }
1398
1399                         labeladdon = int(lyxfont::maxDescent(labelfont) *
1400                                          layout.spacing.getValue() *
1401                                          spacing_val)
1402                                 + int(lyxfont::maxAscent(labelfont) *
1403                                       layout.spacing.getValue() *
1404                                       spacing_val);
1405                 }
1406
1407                 // special code for the top label
1408                 if ((layout.labeltype == LABEL_TOP_ENVIRONMENT
1409                      || layout.labeltype == LABEL_BIBLIO
1410                      || layout.labeltype == LABEL_CENTERED_TOP_ENVIRONMENT)
1411                     && row_ptr->par()->isFirstInSequence()
1412                     && !row_ptr->par()->getLabelstring().empty())
1413                 {
1414                         float spacing_val = 1.0;
1415                         if (!row_ptr->par()->params().spacing().isDefault()) {
1416                                 spacing_val = row_ptr->par()->params().spacing().getValue();
1417                         } else {
1418                                 spacing_val = bview->buffer()->params.spacing.getValue();
1419                         }
1420
1421                         labeladdon = int(
1422                                 (lyxfont::maxAscent(labelfont) *
1423                                  layout.spacing.getValue() *
1424                                  spacing_val)
1425                                 +(lyxfont::maxDescent(labelfont) *
1426                                   layout.spacing.getValue() *
1427                                   spacing_val)
1428                                 + layout.topsep * defaultHeight()
1429                                 + layout.labelbottomsep *  defaultHeight());
1430                 }
1431
1432                 // and now the layout spaces, for example before and after a section,
1433                 // or between the items of a itemize or enumerate environment
1434
1435                 if (!firstpar->params().pagebreakTop()) {
1436                         Paragraph * prev = row_ptr->par()->previous();
1437                         if (prev)
1438                                 prev = row_ptr->par()->depthHook(row_ptr->par()->getDepth());
1439                         if (prev && prev->getLayout() == firstpar->getLayout() &&
1440                                 prev->getDepth() == firstpar->getDepth() &&
1441                                 prev->getLabelWidthString() == firstpar->getLabelWidthString())
1442                         {
1443                                 layoutasc = (layout.itemsep * defaultHeight());
1444                         } else if (row_ptr->previous()) {
1445                                 tmptop = layout.topsep;
1446
1447                                 if (row_ptr->previous()->par()->getDepth() >= row_ptr->par()->getDepth())
1448                                         tmptop -= textclasslist.Style(bview->buffer()->params.textclass,
1449                                                                       row_ptr->previous()->par()->
1450                                                                       getLayout()).bottomsep;
1451
1452                                 if (tmptop > 0)
1453                                         layoutasc = (tmptop * defaultHeight());
1454                         } else if (row_ptr->par()->params().lineTop()) {
1455                                 tmptop = layout.topsep;
1456
1457                                 if (tmptop > 0)
1458                                         layoutasc = (tmptop * defaultHeight());
1459                         }
1460
1461                         prev = row_ptr->par()->outerHook();
1462                         if (prev)  {
1463                                 maxasc += int(textclasslist.Style(bview->buffer()->params.textclass,
1464                                               prev->getLayout()).parsep * defaultHeight());
1465                         } else {
1466                                 if (firstpar->previous() &&
1467                                         firstpar->previous()->getDepth() == 0 &&
1468                                         firstpar->previous()->getLayout() !=
1469                                         firstpar->getLayout())
1470                                 {
1471                                         // avoid parsep
1472                                 } else if (firstpar->previous()) {
1473                                         maxasc += int(layout.parsep * defaultHeight());
1474                                 }
1475                         }
1476                 }
1477         }
1478
1479         // is it a bottom line?
1480         if (row_ptr->par() == par
1481                 && (!row_ptr->next() || row_ptr->next()->par() != row_ptr->par()))
1482         {
1483                 // the paper margins
1484                 if (!par->next() && bv_owner)
1485                         maxdesc += LYX_PAPER_MARGIN;
1486
1487                 // add the vertical spaces, that the user added
1488                 maxdesc += getLengthMarkerHeight(bview, firstpar->params().spaceBottom());
1489
1490                 // do not forget the DTP-lines!
1491                 // there height depends on the font of the nearest character
1492                 if (firstpar->params().lineBottom())
1493                         maxdesc += 2 * lyxfont::ascent('x',
1494                                                        getFont(bview->buffer(),
1495                                                                par,
1496                                                                max(pos_type(0), par->size() - 1)));
1497
1498                 // and now the pagebreaks
1499                 if (firstpar->params().pagebreakBottom())
1500                         maxdesc += 3 * defaultHeight();
1501
1502                 // and now the layout spaces, for example before and after
1503                 // a section, or between the items of a itemize or enumerate
1504                 // environment
1505                 if (!firstpar->params().pagebreakBottom()
1506                     && row_ptr->par()->next()) {
1507                         Paragraph * nextpar = row_ptr->par()->next();
1508                         Paragraph * comparepar = row_ptr->par();
1509                         float usual = 0;
1510                         float unusual = 0;
1511
1512                         if (comparepar->getDepth() > nextpar->getDepth()) {
1513                                 usual = (textclasslist.Style(bview->buffer()->params.textclass,
1514                                          comparepar->getLayout()).bottomsep * defaultHeight());
1515                                 comparepar = comparepar->depthHook(nextpar->getDepth());
1516                                 if (comparepar->getLayout()!= nextpar->getLayout()
1517                                         || nextpar->getLabelWidthString() !=
1518                                         comparepar->getLabelWidthString())
1519                                 {
1520                                         unusual = (textclasslist.Style(bview->buffer()->params.textclass,
1521                                                    comparepar->getLayout()).bottomsep * defaultHeight());
1522                                 }
1523                                 if (unusual > usual)
1524                                         layoutdesc = unusual;
1525                                 else
1526                                         layoutdesc = usual;
1527                         } else if (comparepar->getDepth() ==  nextpar->getDepth()) {
1528
1529                                 if (comparepar->getLayout()!= nextpar->getLayout()
1530                                         || nextpar->getLabelWidthString() !=
1531                                         comparepar->getLabelWidthString())
1532                                         layoutdesc = int(textclasslist.Style(bview->buffer()->params.textclass,
1533                                                                                                                  comparepar->getLayout()).bottomsep * defaultHeight());
1534                         }
1535                 }
1536         }
1537
1538         // incalculate the layout spaces
1539         maxasc += int(layoutasc * 2 / (2 + firstpar->getDepth()));
1540         maxdesc += int(layoutdesc * 2 / (2 + firstpar->getDepth()));
1541
1542         // calculate the new height of the text
1543         height -= row_ptr->height();
1544
1545         row_ptr->height(maxasc + maxdesc + labeladdon);
1546         row_ptr->baseline(maxasc + labeladdon);
1547
1548         height += row_ptr->height();
1549         float x = 0;
1550         if (layout.margintype != MARGIN_RIGHT_ADDRESS_BOX) {
1551                 float dummy;
1552                 prepareToPrint(bview, row_ptr, x, dummy, dummy, dummy, false);
1553         }
1554         row_ptr->width(int(maxwidth + x));
1555         if (inset_owner) {
1556                 Row * r = firstrow;
1557                 width = max(0,workWidth(bview));
1558                 while (r) {
1559                         if (r->width() > width)
1560                                 width = r->width();
1561                         r = r->next();
1562                 }
1563         }
1564 }
1565
1566
1567 /* Appends the implicit specified paragraph behind the specified row,
1568  * start at the implicit given position */
1569 void LyXText::appendParagraph(BufferView * bview, Row * row) const
1570 {
1571         bool not_ready = true;
1572
1573         // The last character position of a paragraph is an invariant so we can
1574         // safely get it here. (Asger)
1575         pos_type const lastposition = row->par()->size();
1576         do {
1577                 // Get the next breakpoint
1578                 pos_type z = nextBreakPoint(bview, row, workWidth(bview));
1579
1580                 Row * tmprow = row;
1581
1582                 // Insert the new row
1583                 if (z < lastposition) {
1584                         ++z;
1585                         insertRow(row, row->par(), z);
1586                         row = row->next();
1587
1588                         row->height(0);
1589                 } else
1590                         not_ready = false;
1591
1592                 // Set the dimensions of the row
1593                 // fixed fill setting now by calling inset->update() in
1594                 // SingleWidth when needed!
1595                 tmprow->fill(fill(bview, tmprow, workWidth(bview)));
1596                 setHeightOfRow(bview, tmprow);
1597
1598         } while (not_ready);
1599 }
1600
1601
1602 void LyXText::breakAgain(BufferView * bview, Row * row) const
1603 {
1604         bool not_ready = true;
1605
1606         do  {
1607                 // get the next breakpoint
1608                 pos_type z = nextBreakPoint(bview, row, workWidth(bview));
1609                 Row * tmprow = row;
1610
1611                 if (z < row->par()->size()) {
1612                         if (!row->next() || (row->next() && row->next()->par() != row->par())) {
1613                                 // insert a new row
1614                                 ++z;
1615                                 insertRow(row, row->par(), z);
1616                                 row = row->next();
1617                                 row->height(0);
1618                         } else  {
1619                                 row = row->next();
1620                                 ++z;
1621                                 if (row->pos() == z)
1622                                         not_ready = false;     // the rest will not change
1623                                 else {
1624                                         row->pos(z);
1625                                 }
1626                         }
1627                 } else {
1628                         /* if there are some rows too much, delete them */
1629                         /* only if you broke the whole paragraph! */
1630                         Row * tmprow2 = row;
1631                         while (tmprow2->next() && tmprow2->next()->par() == row->par()) {
1632                                 tmprow2 = tmprow2->next();
1633                         }
1634                         while (tmprow2 != row) {
1635                                 tmprow2 = tmprow2->previous();
1636                                 removeRow(tmprow2->next());
1637                         }
1638                         not_ready = false;
1639                 }
1640
1641                 /* set the dimensions of the row */
1642                 tmprow->fill(fill(bview, tmprow, workWidth(bview)));
1643                 setHeightOfRow(bview, tmprow);
1644         } while (not_ready);
1645 }
1646
1647
1648 // this is just a little changed version of break again
1649 void LyXText::breakAgainOneRow(BufferView * bview, Row * row)
1650 {
1651         // get the next breakpoint
1652         pos_type z = nextBreakPoint(bview, row, workWidth(bview));
1653         Row * tmprow = row;
1654
1655         if (z < row->par()->size()) {
1656                 if (!row->next()
1657                     || (row->next() && row->next()->par() != row->par())) {
1658                         /* insert a new row */
1659                         ++z;
1660                         insertRow(row, row->par(), z);
1661                         row = row->next();
1662                         row->height(0);
1663                 } else  {
1664                         row= row->next();
1665                         ++z;
1666                         if (row->pos() != z)
1667                                 row->pos(z);
1668                 }
1669         } else {
1670                 // if there are some rows too much, delete them
1671                 // only if you broke the whole paragraph!
1672                 Row * tmprow2 = row;
1673                 while (tmprow2->next()
1674                        && tmprow2->next()->par() == row->par()) {
1675                         tmprow2 = tmprow2->next();
1676                 }
1677                 while (tmprow2 != row) {
1678                         tmprow2 = tmprow2->previous();
1679                         removeRow(tmprow2->next());
1680                 }
1681         }
1682
1683         // set the dimensions of the row
1684         tmprow->fill(fill(bview, tmprow, workWidth(bview)));
1685         setHeightOfRow(bview, tmprow);
1686 }
1687
1688
1689 void LyXText::breakParagraph(BufferView * bview, char keep_layout)
1690 {
1691    LyXLayout const & layout =
1692            textclasslist.Style(bview->buffer()->params.textclass,
1693                                cursor.par()->getLayout());
1694
1695    // this is only allowed, if the current paragraph is not empty or caption
1696    if ((cursor.par()->size() <= 0)
1697        && layout.labeltype!= LABEL_SENSITIVE)
1698            return;
1699
1700    setUndo(bview, Undo::INSERT,cursor.par(),cursor.par()->next());
1701
1702    // Always break behind a space
1703    //
1704    // It is better to erase the space (Dekel)
1705    if (cursor.pos() < cursor.par()->size()
1706        && cursor.par()->isLineSeparator(cursor.pos()))
1707            cursor.par()->erase(cursor.pos());
1708            // cursor.pos(cursor.pos() + 1);
1709
1710    // break the paragraph
1711    if (keep_layout)
1712      keep_layout = 2;
1713    else
1714      keep_layout = layout.isEnvironment();
1715    cursor.par()->breakParagraph(bview->buffer()->params, cursor.pos(),
1716                                 keep_layout);
1717
1718    // well this is the caption hack since one caption is really enough
1719    if (layout.labeltype == LABEL_SENSITIVE) {
1720      if (!cursor.pos())
1721              // set to standard-layout
1722              cursor.par()->setLayout(0);
1723      else
1724              // set to standard-layout
1725              cursor.par()->next()->setLayout(0);
1726    }
1727
1728    /* if the cursor is at the beginning of a row without prior newline,
1729     * move one row up!
1730     * This touches only the screen-update. Otherwise we would may have
1731     * an empty row on the screen */
1732    if (cursor.pos() && !cursor.row()->par()->isNewline(cursor.row()->pos() - 1)
1733        && cursor.row()->pos() == cursor.pos()) {
1734            cursorLeft(bview);
1735    }
1736
1737    status(bview, LyXText::NEED_MORE_REFRESH);
1738    refresh_row = cursor.row();
1739    refresh_y = cursor.y() - cursor.row()->baseline();
1740
1741    // Do not forget the special right address boxes
1742    if (layout.margintype == MARGIN_RIGHT_ADDRESS_BOX) {
1743       while (refresh_row->previous() &&
1744              refresh_row->previous()->par() == refresh_row->par()) {
1745               refresh_row = refresh_row->previous();
1746               refresh_y -= refresh_row->height();
1747       }
1748    }
1749    removeParagraph(cursor.row());
1750
1751    // set the dimensions of the cursor row
1752    cursor.row()->fill(fill(bview, cursor.row(), workWidth(bview)));
1753
1754    setHeightOfRow(bview, cursor.row());
1755
1756    while (cursor.par()->next()->size()
1757           && cursor.par()->next()->isNewline(0))
1758            cursor.par()->next()->erase(0);
1759
1760    insertParagraph(bview, cursor.par()->next(), cursor.row());
1761
1762    updateCounters(bview, cursor.row()->previous());
1763
1764    /* This check is necessary. Otherwise the new empty paragraph will
1765     * be deleted automatically. And it is more friendly for the user! */
1766    if (cursor.pos())
1767            setCursor(bview, cursor.par()->next(), 0);
1768    else
1769            setCursor(bview, cursor.par(), 0);
1770
1771    if (cursor.row()->next())
1772            breakAgain(bview, cursor.row()->next());
1773
1774    need_break_row = 0;
1775 }
1776
1777
1778 // Just a macro to make some thing easier.
1779 void LyXText::redoParagraph(BufferView * bview) const
1780 {
1781         clearSelection();
1782         redoParagraphs(bview, cursor, cursor.par()->next());
1783         setCursorIntern(bview, cursor.par(), cursor.pos());
1784 }
1785
1786
1787 /* insert a character, moves all the following breaks in the
1788  * same Paragraph one to the right and make a rebreak */
1789 void LyXText::insertChar(BufferView * bview, char c)
1790 {
1791         setUndo(bview, Undo::INSERT,
1792                 cursor.par(), cursor.par()->next());
1793
1794         // When the free-spacing option is set for the current layout,
1795         // disable the double-space checking
1796
1797         bool const freeSpacing =
1798                 textclasslist.Style(bview->buffer()->params.textclass,
1799                                cursor.row()->par()->getLayout()).free_spacing ||
1800                 cursor.row()->par()->isFreeSpacing();
1801
1802
1803         if (lyxrc.auto_number) {
1804                 static string const number_operators = "+-/*";
1805                 static string const number_unary_operators = "+-";
1806                 static string const number_seperators = ".,:";
1807
1808                 if (current_font.number() == LyXFont::ON) {
1809                         if (!IsDigit(c) && !contains(number_operators, c) &&
1810                             !(contains(number_seperators, c) &&
1811                               cursor.pos() >= 1 &&
1812                               cursor.pos() < cursor.par()->size() &&
1813                               getFont(bview->buffer(),
1814                                       cursor.par(),
1815                                       cursor.pos()).number() == LyXFont::ON &&
1816                               getFont(bview->buffer(),
1817                                       cursor.par(),
1818                                       cursor.pos() - 1).number() == LyXFont::ON)
1819                             )
1820                                 number(bview); // Set current_font.number to OFF
1821                 } else if (IsDigit(c) &&
1822                            real_current_font.isVisibleRightToLeft()) {
1823                         number(bview); // Set current_font.number to ON
1824
1825                         if (cursor.pos() > 0) {
1826                                 char const c = cursor.par()->getChar(cursor.pos() - 1);
1827                                 if (contains(number_unary_operators, c) &&
1828                                     (cursor.pos() == 1 ||
1829                                      cursor.par()->isSeparator(cursor.pos() - 2) ||
1830                                      cursor.par()->isNewline(cursor.pos() - 2) )
1831                                    ) {
1832                                         setCharFont(bview->buffer(),
1833                                                     cursor.par(),
1834                                                     cursor.pos() - 1,
1835                                                     current_font);
1836                                 } else if (contains(number_seperators, c) &&
1837                                            cursor.pos() >= 2 &&
1838                                            getFont(bview->buffer(),
1839                                                    cursor.par(),
1840                                                    cursor.pos() - 2).number() == LyXFont::ON) {
1841                                         setCharFont(bview->buffer(),
1842                                                     cursor.par(),
1843                                                     cursor.pos() - 1,
1844                                                     current_font);
1845                                 }
1846                         }
1847                 }
1848         }
1849
1850
1851         /* First check, if there will be two blanks together or a blank at
1852           the beginning of a paragraph.
1853           I decided to handle blanks like normal characters, the main
1854           difference are the special checks when calculating the row.fill
1855           (blank does not count at the end of a row) and the check here */
1856
1857         // The bug is triggered when we type in a description environment:
1858         // The current_font is not changed when we go from label to main text
1859         // and it should (along with realtmpfont) when we type the space.
1860         // CHECK There is a bug here! (Asger)
1861
1862         LyXFont realtmpfont = real_current_font;
1863         LyXFont rawtmpfont = current_font;  /* store the current font.
1864                                      * This is because of the use
1865                                      * of cursor movements. The moving
1866                                      * cursor would refresh the
1867                                      * current font */
1868
1869         // Get the font that is used to calculate the baselineskip
1870         pos_type const lastpos = cursor.par()->size();
1871         LyXFont rawparfont =
1872                 cursor.par()->getFontSettings(bview->buffer()->params,
1873                                               lastpos - 1);
1874
1875         bool jumped_over_space = false;
1876
1877         if (!freeSpacing && IsLineSeparatorChar(c)) {
1878                 if ((cursor.pos() > 0
1879                      && cursor.par()->isLineSeparator(cursor.pos() - 1))
1880                     || (cursor.pos() > 0
1881                         && cursor.par()->isNewline(cursor.pos() - 1))
1882                     || (cursor.pos() == 0)) {
1883                         static bool sent_space_message = false;
1884                         if (!sent_space_message) {
1885                                 if (cursor.pos() == 0)
1886                                         bview->owner()->message(_("You cannot insert a space at the beginning of a paragraph.  Please read the Tutorial."));
1887                                 else
1888                                         bview->owner()->message(_("You cannot type two spaces this way.  Please read the Tutorial."));
1889                                 sent_space_message = true;
1890                         }
1891                         charInserted();
1892                         return;
1893                 }
1894         } else if (IsNewlineChar(c)) {
1895                 if (cursor.par() == cursor.par()
1896                     && cursor.pos() <= beginningOfMainBody(bview->buffer(), cursor.par())) {
1897                         charInserted();
1898                         return;
1899                 }
1900                 /* No newline at first position
1901                  * of a paragraph or behind labels.
1902                  * TeX does not allow that. */
1903
1904                 if (cursor.pos() < cursor.par()->size() &&
1905                     cursor.par()->isLineSeparator(cursor.pos()))
1906                         // newline always after a blank!
1907                         cursorRight(bview);
1908                 cursor.row()->fill(-1);        // to force a new break
1909         }
1910
1911         // the display inset stuff
1912         if (cursor.row()->par()->isInset(cursor.row()->pos())) {
1913                 Inset * inset = cursor.row()->par()->getInset(cursor.row()->pos());
1914                 if (inset && (inset->display() || inset->needFullRow())) {
1915                         // force a new break
1916                         cursor.row()->fill(-1); // to force a new break
1917                 }
1918         }
1919
1920         // get the cursor row fist
1921         Row * row = cursor.row();
1922         int y = cursor.y() - row->baseline();
1923         if (c != Paragraph::META_INSET) /* Here case LyXText::InsertInset
1924                                             * already insertet the character */
1925                 cursor.par()->insertChar(cursor.pos(), c);
1926         setCharFont(bview->buffer(), cursor.par(), cursor.pos(), rawtmpfont);
1927
1928         if (!jumped_over_space) {
1929                 // refresh the positions
1930                 Row * tmprow = row;
1931                 while (tmprow->next() && tmprow->next()->par() == row->par()) {
1932                         tmprow = tmprow->next();
1933                         tmprow->pos(tmprow->pos() + 1);
1934                 }
1935         }
1936
1937         // Is there a break one row above
1938         if ((cursor.par()->isLineSeparator(cursor.pos())
1939              || cursor.par()->isNewline(cursor.pos())
1940                  || ((cursor.pos() < cursor.par()->size()) &&
1941                          cursor.par()->isInset(cursor.pos()+1))
1942              || cursor.row()->fill() == -1)
1943             && row->previous() && row->previous()->par() == row->par()) {
1944                 pos_type z = nextBreakPoint(bview,
1945                                                            row->previous(),
1946                                                            workWidth(bview));
1947                 if (z >= row->pos()) {
1948                         row->pos(z + 1);
1949
1950                         // set the dimensions of the row above
1951                         row->previous()->fill(fill(bview,
1952                                                    row->previous(),
1953                                                    workWidth(bview)));
1954
1955                         setHeightOfRow(bview, row->previous());
1956
1957                         y -= row->previous()->height();
1958                         refresh_y = y;
1959                         refresh_row = row->previous();
1960                         status(bview, LyXText::NEED_MORE_REFRESH);
1961
1962                         breakAgainOneRow(bview, row);
1963
1964                         current_font = rawtmpfont;
1965                         real_current_font = realtmpfont;
1966                         setCursor(bview, cursor.par(), cursor.pos() + 1,
1967                                   false, cursor.boundary());
1968                         // cursor MUST be in row now.
1969
1970                         if (row->next() && row->next()->par() == row->par())
1971                                 need_break_row = row->next();
1972                         else
1973                                 need_break_row = 0;
1974
1975                         // check, wether the last characters font has changed.
1976                         if (cursor.pos() && cursor.pos() == cursor.par()->size()
1977                             && rawparfont != rawtmpfont)
1978                                 redoHeightOfParagraph(bview, cursor);
1979
1980                         charInserted();
1981                         return;
1982                 }
1983         }
1984
1985         // recalculate the fill of the row
1986         if (row->fill() >= 0)  /* needed because a newline
1987                               * will set fill to -1. Otherwise
1988                               * we would not get a rebreak! */
1989                 row->fill(fill(bview, row, workWidth(bview)));
1990         if (row->fill() < 0) {
1991                 refresh_y = y;
1992                 refresh_row = row;
1993                 refresh_x = cursor.x();
1994                 refresh_pos = cursor.pos();
1995                 status(bview, LyXText::NEED_MORE_REFRESH);
1996                 breakAgainOneRow(bview, row);
1997                 // will the cursor be in another row now?
1998                 if (rowLast(row) <= cursor.pos() + 1 && row->next()) {
1999                         if (row->next() && row->next()->par() == row->par())
2000                                 // this should always be true
2001                                 row = row->next();
2002                         breakAgainOneRow(bview, row);
2003                 }
2004                 current_font = rawtmpfont;
2005                 real_current_font = realtmpfont;
2006
2007                 setCursor(bview, cursor.par(), cursor.pos() + 1, false,
2008                           cursor.boundary());
2009                 if (isBoundary(bview->buffer(), cursor.par(), cursor.pos())
2010                     != cursor.boundary())
2011                         setCursor(bview, cursor.par(), cursor.pos(), false,
2012                           !cursor.boundary());
2013                 if (row->next() && row->next()->par() == row->par())
2014                         need_break_row = row->next();
2015                 else
2016                         need_break_row = 0;
2017         } else {
2018                 refresh_y = y;
2019                 refresh_x = cursor.x();
2020                 refresh_row = row;
2021                 refresh_pos = cursor.pos();
2022
2023                 int const tmpheight = row->height();
2024                 setHeightOfRow(bview, row);
2025                 if (tmpheight == row->height())
2026                         status(bview, LyXText::NEED_VERY_LITTLE_REFRESH);
2027                 else
2028                         status(bview, LyXText::NEED_MORE_REFRESH);
2029
2030                 current_font = rawtmpfont;
2031                 real_current_font = realtmpfont;
2032                 setCursor(bview, cursor.par(), cursor.pos() + 1, false,
2033                           cursor.boundary());
2034         }
2035
2036         // check, wether the last characters font has changed.
2037         if (cursor.pos() && cursor.pos() == cursor.par()->size()
2038             && rawparfont != rawtmpfont) {
2039                 redoHeightOfParagraph(bview, cursor);
2040         } else {
2041                 // now the special right address boxes
2042                 if (textclasslist.Style(bview->buffer()->params.textclass,
2043                                    cursor.par()->getLayout()).margintype
2044                     == MARGIN_RIGHT_ADDRESS_BOX) {
2045                         redoDrawingOfParagraph(bview, cursor);
2046                 }
2047         }
2048
2049         charInserted();
2050 }
2051
2052
2053 void LyXText::charInserted()
2054 {
2055         // Here we could call FinishUndo for every 20 characters inserted.
2056         // This is from my experience how emacs does it.
2057         static unsigned int counter;
2058         if (counter < 20) {
2059                 ++counter;
2060         } else {
2061                 finishUndo();
2062                 counter = 0;
2063         }
2064 }
2065
2066
2067 void LyXText::prepareToPrint(BufferView * bview,
2068                              Row * row, float & x,
2069                              float & fill_separator,
2070                              float & fill_hfill,
2071                              float & fill_label_hfill,
2072                              bool bidi) const
2073 {
2074         float nlh;
2075         float ns;
2076
2077         float w = row->fill();
2078         fill_hfill = 0;
2079         fill_label_hfill = 0;
2080         fill_separator = 0;
2081         fill_label_hfill = 0;
2082
2083         bool const is_rtl =
2084                 row->par()->isRightToLeftPar(bview->buffer()->params);
2085         if (is_rtl) {
2086                 x = (workWidth(bview) > 0)
2087                         ? rightMargin(bview->buffer(), row) : 0;
2088         } else
2089                 x = (workWidth(bview) > 0) ? leftMargin(bview, row) : 0;
2090
2091         // is there a manual margin with a manual label
2092         if (textclasslist.Style(bview->buffer()->params.textclass,
2093                            row->par()->getLayout()).margintype == MARGIN_MANUAL
2094             && textclasslist.Style(bview->buffer()->params.textclass,
2095                               row->par()->getLayout()).labeltype == LABEL_MANUAL) {
2096
2097                 /* one more since labels are left aligned */
2098                 nlh = numberOfLabelHfills(bview->buffer(), row) + 1;
2099                 if (nlh && !row->par()->getLabelWidthString().empty()) {
2100                         fill_label_hfill = labelFill(bview, row) / nlh;
2101                 }
2102         }
2103
2104         // are there any hfills in the row?
2105         float const nh = numberOfHfills(bview->buffer(), row);
2106
2107         if (nh) {
2108                 if (w > 0)
2109                         fill_hfill = w / nh;
2110         } else  {
2111                 // is it block, flushleft or flushright?
2112                 // set x how you need it
2113                 int align;
2114                 if (row->par()->params().align() == LYX_ALIGN_LAYOUT) {
2115                         align = textclasslist.Style(bview->buffer()->params.textclass, row->par()->getLayout()).align;
2116                 } else {
2117                         align = row->par()->params().align();
2118                 }
2119
2120                 // center displayed insets
2121                 Inset * inset;
2122                 if (row->par()->isInset(row->pos())
2123                     && (inset=row->par()->getInset(row->pos()))
2124                     && (inset->display())) // || (inset->scroll() < 0)))
2125                     align = (inset->lyxCode() == Inset::MATHMACRO_CODE)
2126                         ? LYX_ALIGN_BLOCK : LYX_ALIGN_CENTER;
2127
2128                 switch (align) {
2129             case LYX_ALIGN_BLOCK:
2130                         ns = numberOfSeparators(bview->buffer(), row);
2131                         if (ns && row->next() && row->next()->par() == row->par() &&
2132                             !(row->next()->par()->isNewline(row->next()->pos() - 1))
2133                             && !(row->next()->par()->isInset(row->next()->pos())
2134                                  && row->next()->par()->getInset(row->next()->pos())
2135                                  && row->next()->par()->getInset(row->next()->pos())->display())
2136                                 )
2137                         {
2138                                 fill_separator = w / ns;
2139                         } else if (is_rtl) {
2140                                 x += w;
2141                         }
2142                         break;
2143             case LYX_ALIGN_RIGHT:
2144                         x += w;
2145                         break;
2146             case LYX_ALIGN_CENTER:
2147                         x += w / 2;
2148                         break;
2149                 }
2150         }
2151         if (!bidi)
2152                 return;
2153
2154         computeBidiTables(bview->buffer(), row);
2155         if (is_rtl) {
2156                 pos_type main_body =
2157                         beginningOfMainBody(bview->buffer(), row->par());
2158                 pos_type last = rowLast(row);
2159
2160                 if (main_body > 0 &&
2161                     (main_body-1 > last ||
2162                      !row->par()->isLineSeparator(main_body-1))) {
2163                         LyXLayout const & layout =
2164                                 textclasslist.Style(bview->buffer()->params.textclass,
2165                                                     row->par()->getLayout());
2166                         x += lyxfont::width(layout.labelsep,
2167                                             getLabelFont(bview->buffer(), row->par()));
2168                         if (main_body-1 <= last)
2169                                 x += fill_label_hfill;
2170                 }
2171         }
2172 }
2173
2174 /* important for the screen */
2175
2176
2177 /* the cursor set functions have a special mechanism. When they
2178 * realize, that you left an empty paragraph, they will delete it.
2179 * They also delete the corresponding row */
2180
2181 void LyXText::cursorRightOneWord(BufferView * bview) const
2182 {
2183         // treat floats, HFills and Insets as words
2184         LyXCursor tmpcursor = cursor;
2185         // CHECK See comment on top of text.C
2186
2187         if (tmpcursor.pos() == tmpcursor.par()->size()
2188             && tmpcursor.par()->next()) {
2189                         tmpcursor.par(tmpcursor.par()->next());
2190                         tmpcursor.pos(0);
2191         } else {
2192                 int steps = 0;
2193
2194                 // Skip through initial nonword stuff.
2195                 while (tmpcursor.pos() < tmpcursor.par()->size() &&
2196                        ! tmpcursor.par()->isWord(tmpcursor.pos())) {
2197                   //    printf("Current pos1 %d", tmpcursor.pos()) ;
2198                         tmpcursor.pos(tmpcursor.pos() + 1);
2199                         ++steps;
2200                 }
2201                 // Advance through word.
2202                 while (tmpcursor.pos() < tmpcursor.par()->size() &&
2203                         tmpcursor.par()->isWord( tmpcursor.pos())) {
2204                   //     printf("Current pos2 %d", tmpcursor.pos()) ;
2205                         tmpcursor.pos(tmpcursor.pos() + 1);
2206                         ++steps;
2207                 }
2208         }
2209         setCursor(bview, tmpcursor.par(), tmpcursor.pos());
2210 }
2211
2212
2213 void LyXText::cursorTab(BufferView * bview) const
2214 {
2215     LyXCursor tmpcursor = cursor;
2216     while (tmpcursor.pos() < tmpcursor.par()->size()
2217            && !tmpcursor.par()->isNewline(tmpcursor.pos()))
2218         tmpcursor.pos(tmpcursor.pos() + 1);
2219
2220     if (tmpcursor.pos() == tmpcursor.par()->size()){
2221         if (tmpcursor.par()->next()) {
2222             tmpcursor.par(tmpcursor.par()->next());
2223             tmpcursor.pos(0);
2224         }
2225     } else
2226         tmpcursor.pos(tmpcursor.pos() + 1);
2227     setCursor(bview, tmpcursor.par(), tmpcursor.pos());
2228 }
2229
2230
2231 /* -------> Skip initial whitespace at end of word and move cursor to *start*
2232             of prior word, not to end of next prior word. */
2233
2234 void LyXText::cursorLeftOneWord(BufferView * bview)  const
2235 {
2236         LyXCursor tmpcursor = cursor;
2237         cursorLeftOneWord(tmpcursor);
2238         setCursor(bview, tmpcursor.par(), tmpcursor.pos());
2239 }
2240
2241 void LyXText::cursorLeftOneWord(LyXCursor  & cur)  const
2242 {
2243         // treat HFills, floats and Insets as words
2244         cur = cursor;
2245         while (cur.pos()
2246                && (cur.par()->isSeparator(cur.pos() - 1)
2247                    || cur.par()->isKomma(cur.pos() - 1))
2248                && !(cur.par()->isHfill(cur.pos() - 1)
2249                     || cur.par()->isInset(cur.pos() - 1)))
2250                 cur.pos(cur.pos() - 1);
2251
2252         if (cur.pos()
2253             && (cur.par()->isInset(cur.pos() - 1)
2254                 || cur.par()->isHfill(cur.pos() - 1))) {
2255                 cur.pos(cur.pos() - 1);
2256         } else if (!cur.pos()) {
2257                 if (cur.par()->previous()){
2258                         cur.par(cur.par()->previous());
2259                         cur.pos(cur.par()->size());
2260                 }
2261         } else {                // Here, cur != 0
2262                 while (cur.pos() > 0 &&
2263                        cur.par()->isWord(cur.pos()-1) )
2264                         cur.pos(cur.pos() - 1);
2265         }
2266 }
2267
2268 /* -------> Select current word. This depends on behaviour of
2269 CursorLeftOneWord(), so it is patched as well. */
2270 void LyXText::getWord(LyXCursor & from, LyXCursor & to,
2271                       word_location const loc) const
2272 {
2273         // first put the cursor where we wana start to select the word
2274         from = cursor;
2275         switch(loc) {
2276         case WHOLE_WORD_STRICT:
2277                 if (cursor.pos() == 0 || cursor.pos() == cursor.par()->size()
2278                     || cursor.par()->isSeparator(cursor.pos())
2279                     || cursor.par()->isKomma(cursor.pos())
2280                     || cursor.par()->isSeparator(cursor.pos() -1)
2281                     || cursor.par()->isKomma(cursor.pos() -1)) {
2282                         to = from;
2283                         return;
2284                 }
2285                 // no break here, we go to the next
2286
2287         case WHOLE_WORD:
2288                 // Move cursor to the beginning, when not already there.
2289                 if (from.pos() && !from.par()->isSeparator(from.pos() - 1)
2290                     && !from.par()->isKomma(from.pos() - 1))
2291                         cursorLeftOneWord(from);
2292                 break;
2293         case PREVIOUS_WORD:
2294                 // always move the cursor to the beginning of previous word
2295                 cursorLeftOneWord(from);
2296                 break;
2297         case NEXT_WORD:
2298                 lyxerr << "LyXText::getWord: NEXT_WORD not implemented yet\n";
2299                 break;
2300         case PARTIAL_WORD:
2301                 break;
2302         }
2303         to = from;
2304         while (to.pos() < to.par()->size()
2305                && !to.par()->isSeparator(to.pos())
2306                && !to.par()->isKomma(to.pos())
2307                && !to.par()->isHfill(to.pos()) )
2308         {
2309                 to.pos(to.pos() + 1);
2310         }
2311 }
2312
2313
2314 void LyXText::selectWord(BufferView * bview, word_location const loc)
2315 {
2316         LyXCursor from;
2317         LyXCursor to;
2318         getWord(from, to, loc);
2319         if (cursor != from)
2320                 setCursor(bview, from.par(), from.pos());
2321         if (to == from)
2322                 return;
2323         selection.cursor = cursor;
2324         setCursor(bview, to.par(), to.pos() );
2325         setSelection(bview);
2326 }
2327
2328
2329 /* -------> Select the word currently under the cursor when no
2330         selection is currently set */
2331 bool LyXText::selectWordWhenUnderCursor(BufferView * bview,
2332                                         word_location const loc)
2333 {
2334         if (!selection.set()) {
2335                 selectWord(bview, loc);
2336                 return selection.set();
2337         }
2338         return false;
2339 }
2340
2341
2342 // This function is only used by the spellchecker for NextWord().
2343 // It doesn't handle LYX_ACCENTs and probably never will.
2344 string const LyXText::selectNextWordToSpellcheck(BufferView * bview,
2345                                                  float & value) const
2346 {
2347         if (the_locking_inset) {
2348                 string str = the_locking_inset->selectNextWordToSpellcheck(bview, value);
2349                 if (!str.empty()) {
2350                         value += float(cursor.y())/float(height);
2351                         return str;
2352                 }
2353 #warning Dekel please have a look on this one RTL? (Jug)
2354 #warning DEKEL!
2355                 // we have to go on checking so move cusor to the right
2356                 if (cursor.pos() == cursor.par()->size()) {
2357                         if (!cursor.par()->next())
2358                                 return str;
2359                         cursor.par(cursor.par()->next());
2360                         cursor.pos(0);
2361                 } else
2362                         cursor.pos(cursor.pos() + 1);
2363         }
2364         Paragraph * tmppar = cursor.par();
2365
2366         // If this is not the very first word, skip rest of
2367         // current word because we are probably in the middle
2368         // of a word if there is text here.
2369         if (cursor.pos() || cursor.par()->previous()) {
2370                 while (cursor.pos() < cursor.par()->size()
2371                        && cursor.par()->isLetter(cursor.pos()))
2372                         cursor.pos(cursor.pos() + 1);
2373         }
2374
2375         // Now, skip until we have real text (will jump paragraphs)
2376         while ((cursor.par()->size() > cursor.pos()
2377                && (!cursor.par()->isLetter(cursor.pos()))
2378                && (!cursor.par()->isInset(cursor.pos()) ||
2379                            !cursor.par()->getInset(cursor.pos())->allowSpellcheck()))
2380                || (cursor.par()->size() == cursor.pos()
2381                    && cursor.par()->next()))
2382         {
2383                 if (cursor.pos() == cursor.par()->size()) {
2384                         cursor.par(cursor.par()->next());
2385                         cursor.pos(0);
2386                 } else
2387                         cursor.pos(cursor.pos() + 1);
2388         }
2389
2390         // now check if we hit an inset so it has to be a inset containing text!
2391         if (cursor.pos() < cursor.par()->size() &&
2392             cursor.par()->isInset(cursor.pos()))
2393         {
2394                 // lock the inset!
2395                 cursor.par()->getInset(cursor.pos())->edit(bview);
2396                 // now call us again to do the above trick
2397                 // but obviously we have to start from down below ;)
2398                 return bview->text->selectNextWordToSpellcheck(bview, value);
2399         }
2400
2401         // Update the value if we changed paragraphs
2402         if (cursor.par() != tmppar){
2403                 setCursor(bview, cursor.par(), cursor.pos());
2404                 value = float(cursor.y())/float(height);
2405         }
2406
2407         // Start the selection from here
2408         selection.cursor = cursor;
2409
2410         // and find the end of the word (insets like optional hyphens
2411         // and ligature break are part of a word)
2412         while (cursor.pos() < cursor.par()->size()
2413                && (cursor.par()->isLetter(cursor.pos())))
2414                 cursor.pos(cursor.pos() + 1);
2415
2416         // Finally, we copy the word to a string and return it
2417         string str;
2418         if (selection.cursor.pos() < cursor.pos()) {
2419                 pos_type i;
2420                 for (i = selection.cursor.pos(); i < cursor.pos(); ++i) {
2421                         if (!cursor.par()->isInset(i))
2422                                 str += cursor.par()->getChar(i);
2423                 }
2424         }
2425         return str;
2426 }
2427
2428
2429 // This one is also only for the spellchecker
2430 void LyXText::selectSelectedWord(BufferView * bview)
2431 {
2432         if (the_locking_inset) {
2433                 the_locking_inset->selectSelectedWord(bview);
2434                 return;
2435         }
2436         // move cursor to the beginning
2437         setCursor(bview, selection.cursor.par(), selection.cursor.pos());
2438
2439         // set the sel cursor
2440         selection.cursor = cursor;
2441
2442         // now find the end of the word
2443         while (cursor.pos() < cursor.par()->size()
2444                && (cursor.par()->isLetter(cursor.pos())))
2445                 cursor.pos(cursor.pos() + 1);
2446
2447         setCursor(bview, cursor.par(), cursor.pos());
2448
2449         // finally set the selection
2450         setSelection(bview);
2451 }
2452
2453
2454 /* -------> Delete from cursor up to the end of the current or next word. */
2455 void LyXText::deleteWordForward(BufferView * bview)
2456 {
2457         if (!cursor.par()->size())
2458                 cursorRight(bview);
2459         else {
2460                 LyXCursor tmpcursor = cursor;
2461                 tmpcursor.row(0); // ??
2462                 selection.set(true); // to avoid deletion
2463                 cursorRightOneWord(bview);
2464                 setCursor(bview, tmpcursor, tmpcursor.par(), tmpcursor.pos());
2465                 selection.cursor = cursor;
2466                 cursor = tmpcursor;
2467                 setSelection(bview);
2468
2469                 /* -----> Great, CutSelection() gets rid of multiple spaces. */
2470                 cutSelection(bview, true, false);
2471         }
2472 }
2473
2474
2475 /* -------> Delete from cursor to start of current or prior word. */
2476 void LyXText::deleteWordBackward(BufferView * bview)
2477 {
2478        if (!cursor.par()->size())
2479                cursorLeft(bview);
2480        else {
2481                LyXCursor tmpcursor = cursor;
2482                tmpcursor.row(0); // ??
2483                selection.set(true); // to avoid deletion
2484                cursorLeftOneWord(bview);
2485                setCursor(bview, tmpcursor, tmpcursor.par(), tmpcursor.pos());
2486                selection.cursor = cursor;
2487                cursor = tmpcursor;
2488                setSelection(bview);
2489                cutSelection(bview, true, false);
2490        }
2491 }
2492
2493
2494 /* -------> Kill to end of line. */
2495 void LyXText::deleteLineForward(BufferView * bview)
2496 {
2497         if (!cursor.par()->size())
2498                 // Paragraph is empty, so we just go to the right
2499                 cursorRight(bview);
2500         else {
2501                 LyXCursor tmpcursor = cursor;
2502                 // We can't store the row over a regular setCursor
2503                 // so we set it to 0 and reset it afterwards.
2504                 tmpcursor.row(0); // ??
2505                 selection.set(true); // to avoid deletion
2506                 cursorEnd(bview);
2507                 setCursor(bview, tmpcursor, tmpcursor.par(), tmpcursor.pos());
2508                 selection.cursor = cursor;
2509                 cursor = tmpcursor;
2510                 setSelection(bview);
2511                 // What is this test for ??? (JMarc)
2512                 if (!selection.set()) {
2513                         deleteWordForward(bview);
2514                 } else {
2515                         cutSelection(bview, true, false);
2516                 }
2517         }
2518 }
2519
2520
2521 // Change the case of a word at cursor position.
2522 // This function directly manipulates Paragraph::text because there
2523 // is no Paragraph::SetChar currently. I did what I could to ensure
2524 // that it is correct. I guess part of it should be moved to
2525 // Paragraph, but it will have to change for 1.1 anyway. At least
2526 // it does not access outside of the allocated array as the older
2527 // version did. (JMarc)
2528 void LyXText::changeCase(BufferView * bview, LyXText::TextCase action)
2529 {
2530         LyXCursor from;
2531         LyXCursor to;
2532
2533         if (selection.set()) {
2534                 from = selection.start;
2535                 to = selection.end;
2536         } else {
2537                 getWord(from, to, PARTIAL_WORD);
2538                 setCursor(bview, to.par(), to.pos() + 1);
2539         }
2540
2541         changeRegionCase(bview, from, to, action);
2542 }
2543
2544
2545 void LyXText::changeRegionCase(BufferView * bview,
2546                                LyXCursor const & from,
2547                                LyXCursor const & to,
2548                                LyXText::TextCase action)
2549 {
2550         lyx::Assert(from <= to);
2551
2552         setUndo(bview, Undo::FINISH,
2553                 from.par(), to.par()->next());
2554
2555         pos_type pos = from.pos();
2556         Paragraph * par = from.par();
2557
2558         while (par && (pos != to.pos() || par != to.par())) {
2559                 unsigned char c = par->getChar(pos);
2560                 if (!IsInsetChar(c) && !IsHfillChar(c)) {
2561                         switch (action) {
2562                         case text_lowercase:
2563                                 c = lowercase(c);
2564                                 break;
2565                         case text_capitalization:
2566                                 c = uppercase(c);
2567                                 action = text_lowercase;
2568                                 break;
2569                         case text_uppercase:
2570                                 c = uppercase(c);
2571                                 break;
2572                         }
2573                 }
2574                 par->setChar(pos, c);
2575                 checkParagraph(bview, par, pos);
2576
2577                 ++pos;
2578                 if (pos == par->size()) {
2579                         par = par->next();
2580                         pos = 0;
2581                 }
2582         }
2583         if (to.row() != from.row()) {
2584                 refresh_y = from.y() - from.row()->baseline();
2585                 refresh_row = from.row();
2586                 status(bview, LyXText::NEED_MORE_REFRESH);
2587         }
2588 }
2589
2590
2591 void LyXText::transposeChars(BufferView & bview)
2592 {
2593         Paragraph * tmppar = cursor.par();
2594
2595         setUndo(&bview, Undo::FINISH,
2596                 tmppar, tmppar->next());
2597
2598         pos_type tmppos = cursor.pos();
2599
2600         // First decide if it is possible to transpose at all
2601
2602         // We are at the beginning of a paragraph.
2603         if (tmppos == 0) return;
2604
2605         // We are at the end of a paragraph.
2606         if (tmppos == tmppar->size() - 1) return;
2607
2608         unsigned char c1 = tmppar->getChar(tmppos);
2609         unsigned char c2 = tmppar->getChar(tmppos - 1);
2610
2611         if (c1 != Paragraph::META_INSET
2612             && c2 != Paragraph::META_INSET) {
2613                 tmppar->setChar(tmppos, c2);
2614                 tmppar->setChar(tmppos - 1, c1);
2615         }
2616         // We should have an implementation that handles insets
2617         // as well, but that will have to come later. (Lgb)
2618         checkParagraph(const_cast<BufferView*>(&bview), tmppar, tmppos);
2619 }
2620
2621
2622 void LyXText::Delete(BufferView * bview)
2623 {
2624         // this is a very easy implementation
2625
2626         LyXCursor old_cursor = cursor;
2627         int const old_cur_par_id = old_cursor.par()->id();
2628         int const old_cur_par_prev_id = old_cursor.par()->previous() ?
2629                 old_cursor.par()->previous()->id() : 0;
2630
2631         // just move to the right
2632         cursorRight(bview);
2633
2634         // CHECK Look at the comment here.
2635         // This check is not very good...
2636         // The cursorRightIntern calls DeleteEmptyParagrapgMechanism
2637         // and that can very well delete the par or par->previous in
2638         // old_cursor. Will a solution where we compare paragraph id's
2639         //work better?
2640         if ((cursor.par()->previous() ? cursor.par()->previous()->id() : 0)
2641             == old_cur_par_prev_id
2642             && cursor.par()->id() != old_cur_par_id) {
2643                 // delete-empty-paragraph-mechanism has done it
2644                 return;
2645         }
2646
2647         // if you had success make a backspace
2648         if (old_cursor.par() != cursor.par() || old_cursor.pos() != cursor.pos()) {
2649                 LyXCursor tmpcursor = cursor;
2650                 // to make sure undo gets the right cursor position
2651                 cursor = old_cursor;
2652                 setUndo(bview, Undo::DELETE,
2653                         cursor.par(), cursor.par()->next());
2654                 cursor = tmpcursor;
2655                 backspace(bview);
2656         }
2657 }
2658
2659
2660 void LyXText::backspace(BufferView * bview)
2661 {
2662         // Get the font that is used to calculate the baselineskip
2663         pos_type lastpos = cursor.par()->size();
2664         LyXFont rawparfont =
2665                 cursor.par()->getFontSettings(bview->buffer()->params,
2666                                               lastpos - 1);
2667
2668         if (cursor.pos() == 0) {
2669                 // The cursor is at the beginning of a paragraph,
2670                 // so the the backspace will collapse two paragraphs into one.
2671
2672                 // we may paste some paragraphs
2673
2674                 // is it an empty paragraph?
2675
2676                 if ((lastpos == 0
2677                      || (lastpos == 1 && cursor.par()->isSeparator(0)))) {
2678                         // This is an empty paragraph and we delete it just by moving the cursor one step
2679                         // left and let the DeleteEmptyParagraphMechanism handle the actual deletion
2680                         // of the paragraph.
2681
2682                         if (cursor.par()->previous()) {
2683                                 Paragraph * tmppar = cursor.par()->previous();
2684                                 if (cursor.par()->getLayout() == tmppar->getLayout()
2685                                     && cursor.par()->getAlign() == tmppar->getAlign()) {
2686                                         // Inherit bottom DTD from the paragraph below.
2687                                         // (the one we are deleting)
2688                                         tmppar->params().lineBottom(cursor.par()->params().lineBottom());
2689                                         tmppar->params().spaceBottom(cursor.par()->params().spaceBottom());
2690                                         tmppar->params().pagebreakBottom(cursor.par()->params().pagebreakBottom());
2691                                 }
2692
2693                                 cursorLeft(bview);
2694
2695                                 // the layout things can change the height of a row !
2696                                 int const tmpheight = cursor.row()->height();
2697                                 setHeightOfRow(bview, cursor.row());
2698                                 if (cursor.row()->height() != tmpheight) {
2699                                         refresh_y = cursor.y() - cursor.row()->baseline();
2700                                         refresh_row = cursor.row();
2701                                         status(bview, LyXText::NEED_MORE_REFRESH);
2702                                 }
2703                                 return;
2704                         }
2705                 }
2706
2707                 if (cursor.par()->previous()) {
2708                         setUndo(bview, Undo::DELETE,
2709                                 cursor.par()->previous(), cursor.par()->next());
2710                 }
2711
2712                 Paragraph * tmppar = cursor.par();
2713                 Row * tmprow = cursor.row();
2714
2715                 // We used to do cursorLeftIntern() here, but it is
2716                 // not a good idea since it triggers the auto-delete
2717                 // mechanism. So we do a cursorLeftIntern()-lite,
2718                 // without the dreaded mechanism. (JMarc)
2719                 if (cursor.par()->previous()) {
2720                         // steps into the above paragraph.
2721                         setCursorIntern(bview, cursor.par()->previous(),
2722                                         cursor.par()->previous()->size(),
2723                                         false);
2724                 }
2725
2726                 /* Pasting is not allowed, if the paragraphs have different
2727                    layout. I think it is a real bug of all other
2728                    word processors to allow it. It confuses the user.
2729                    Even so with a footnote paragraph and a non-footnote
2730                    paragraph. I will not allow pasting in this case,
2731                    because the user would be confused if the footnote behaves
2732                    different wether it is open or closed.
2733
2734                    Correction: Pasting is always allowed with standard-layout
2735                 */
2736                 if (cursor.par() != tmppar
2737                     && (cursor.par()->getLayout() == tmppar->getLayout()
2738                         || tmppar->getLayout() == 0 /*standard*/)
2739                     && cursor.par()->getAlign() == tmppar->getAlign())
2740                 {
2741                         removeParagraph(tmprow);
2742                         removeRow(tmprow);
2743                         cursor.par()->pasteParagraph(bview->buffer()->params);
2744
2745                         if (!cursor.pos() || !cursor.par()->isSeparator(cursor.pos() - 1))
2746                                 ; //cursor.par()->insertChar(cursor.pos(), ' ');
2747                         // strangely enough it seems that commenting out the line above removes
2748                         // most or all of the segfaults. I will however also try to move the
2749                         // two Remove... lines in front of the PasteParagraph too.
2750                         else
2751                                 if (cursor.pos())
2752                                         cursor.pos(cursor.pos() - 1);
2753
2754                         status(bview, LyXText::NEED_MORE_REFRESH);
2755                         refresh_row = cursor.row();
2756                         refresh_y = cursor.y() - cursor.row()->baseline();
2757
2758                         // remove the lost paragraph
2759                         // This one is not safe, since the paragraph that the tmprow and the
2760                         // following rows belong to has been deleted by the PasteParagraph
2761                         // above. The question is... could this be moved in front of the
2762                         // PasteParagraph?
2763                         //RemoveParagraph(tmprow);
2764                         //RemoveRow(tmprow);
2765
2766                         // This rebuilds the rows.
2767                         appendParagraph(bview, cursor.row());
2768                         updateCounters(bview, cursor.row());
2769
2770                         // the row may have changed, block, hfills etc.
2771                         setCursor(bview, cursor.par(), cursor.pos(), false);
2772                 }
2773         } else {
2774                 /* this is the code for a normal backspace, not pasting
2775                  * any paragraphs */
2776                 setUndo(bview, Undo::DELETE,
2777                         cursor.par(), cursor.par()->next());
2778                 // We used to do cursorLeftIntern() here, but it is
2779                 // not a good idea since it triggers the auto-delete
2780                 // mechanism. So we do a cursorLeftIntern()-lite,
2781                 // without the dreaded mechanism. (JMarc)
2782                 setCursorIntern(bview, cursor.par(), cursor.pos()- 1,
2783                                 false, cursor.boundary());
2784
2785                 // some insets are undeletable here
2786                 if (cursor.par()->isInset(cursor.pos())) {
2787                         if (!cursor.par()->getInset(cursor.pos())->deletable())
2788                                 return;
2789                         // force complete redo when erasing display insets
2790                         // this is a cruel method but safe..... Matthias
2791                         if (cursor.par()->getInset(cursor.pos())->display() ||
2792                             cursor.par()->getInset(cursor.pos())->needFullRow()) {
2793                                 cursor.par()->erase(cursor.pos());
2794                                 redoParagraph(bview);
2795                                 return;
2796                         }
2797                 }
2798
2799                 Row * row = cursor.row();
2800                 int y = cursor.y() - row->baseline();
2801                 pos_type z;
2802                 /* remember that a space at the end of a row doesnt count
2803                  * when calculating the fill */
2804                 if (cursor.pos() < rowLast(row) ||
2805                     !cursor.par()->isLineSeparator(cursor.pos())) {
2806                         row->fill(row->fill() + singleWidth(bview,
2807                                                             cursor.par(),
2808                                                             cursor.pos()));
2809                 }
2810
2811                 /* some special code when deleting a newline. This is similar
2812                  * to the behavior when pasting paragraphs */
2813                 if (cursor.pos() && cursor.par()->isNewline(cursor.pos())) {
2814                         cursor.par()->erase(cursor.pos());
2815                         // refresh the positions
2816                         Row * tmprow = row;
2817                         while (tmprow->next() && tmprow->next()->par() == row->par()) {
2818                                 tmprow = tmprow->next();
2819                                 tmprow->pos(tmprow->pos() - 1);
2820                         }
2821                         if (cursor.par()->isLineSeparator(cursor.pos() - 1))
2822                                 cursor.pos(cursor.pos() - 1);
2823
2824                         if (cursor.pos() < cursor.par()->size()
2825                             && !cursor.par()->isSeparator(cursor.pos())) {
2826                                 cursor.par()->insertChar(cursor.pos(), ' ');
2827                                 setCharFont(bview->buffer(), cursor.par(),
2828                                             cursor.pos(), current_font);
2829                                 // refresh the positions
2830                                 tmprow = row;
2831                                 while (tmprow->next() && tmprow->next()->par() == row->par()) {
2832                                         tmprow = tmprow->next();
2833                                         tmprow->pos(tmprow->pos() + 1);
2834                                 }
2835                         }
2836                 } else {
2837                         cursor.par()->erase(cursor.pos());
2838
2839                         // refresh the positions
2840                         Row * tmprow = row;
2841                         while (tmprow->next()
2842                                && tmprow->next()->par() == row->par()) {
2843                                 tmprow = tmprow->next();
2844                                 tmprow->pos(tmprow->pos() - 1);
2845                         }
2846
2847                         // delete newlines at the beginning of paragraphs
2848                         while (cursor.par()->size() &&
2849                                cursor.par()->isNewline(cursor.pos()) &&
2850                                cursor.pos() == beginningOfMainBody(bview->buffer(),
2851                                                                    cursor.par())) {
2852                                 cursor.par()->erase(cursor.pos());
2853                                 // refresh the positions
2854                                 tmprow = row;
2855                                 while (tmprow->next() &&
2856                                        tmprow->next()->par() == row->par()) {
2857                                         tmprow = tmprow->next();
2858                                         tmprow->pos(tmprow->pos() - 1);
2859                                 }
2860                         }
2861                 }
2862
2863                 // is there a break one row above
2864                 if (row->previous() && row->previous()->par() == row->par()) {
2865                         z = nextBreakPoint(bview, row->previous(),
2866                                            workWidth(bview));
2867                         if (z >= row->pos()) {
2868                                 row->pos(z + 1);
2869
2870                                 Row * tmprow = row->previous();
2871
2872                                 // maybe the current row is now empty
2873                                 if (row->pos() >= row->par()->size()) {
2874                                         // remove it
2875                                         removeRow(row);
2876                                         need_break_row = 0;
2877                                 } else {
2878                                         breakAgainOneRow(bview, row);
2879                                         if (row->next() && row->next()->par() == row->par())
2880                                                 need_break_row = row->next();
2881                                         else
2882                                                 need_break_row = 0;
2883                                 }
2884
2885                                 // set the dimensions of the row above
2886                                 y -= tmprow->height();
2887                                 tmprow->fill(fill(bview, tmprow,
2888                                                   workWidth(bview)));
2889                                 setHeightOfRow(bview, tmprow);
2890
2891                                 refresh_y = y;
2892                                 refresh_row = tmprow;
2893                                 status(bview, LyXText::NEED_MORE_REFRESH);
2894                                 setCursor(bview, cursor.par(), cursor.pos(),
2895                                           false, cursor.boundary());
2896                                 //current_font = rawtmpfont;
2897                                 //real_current_font = realtmpfont;
2898                                 // check, whether the last character's font has changed.
2899                                 if (rawparfont !=
2900                                     cursor.par()->getFontSettings(bview->buffer()->params,
2901                                                                   cursor.par()->size() - 1))
2902                                         redoHeightOfParagraph(bview, cursor);
2903                                 return;
2904                         }
2905                 }
2906
2907                 // break the cursor row again
2908                 if (row->next() && row->next()->par() == row->par() &&
2909                     (rowLast(row) == row->par()->size() - 1 ||
2910                      nextBreakPoint(bview, row, workWidth(bview)) != rowLast(row))) {
2911
2912                         /* it can happen that a paragraph loses one row
2913                          * without a real breakup. This is when a word
2914                          * is to long to be broken. Well, I don t care this
2915                          * hack ;-) */
2916                         if (rowLast(row) == row->par()->size() - 1)
2917                                 removeRow(row->next());
2918
2919                         refresh_y = y;
2920                         refresh_row = row;
2921                         status(bview, LyXText::NEED_MORE_REFRESH);
2922
2923                         breakAgainOneRow(bview, row);
2924                         // will the cursor be in another row now?
2925                         if (row->next() && row->next()->par() == row->par() &&
2926                             rowLast(row) <= cursor.pos()) {
2927                                 row = row->next();
2928                                 breakAgainOneRow(bview, row);
2929                         }
2930
2931                         setCursor(bview, cursor.par(), cursor.pos(), false, cursor.boundary());
2932
2933                         if (row->next() && row->next()->par() == row->par())
2934                                 need_break_row = row->next();
2935                         else
2936                                 need_break_row = 0;
2937                 } else  {
2938                         // set the dimensions of the row
2939                         row->fill(fill(bview, row, workWidth(bview)));
2940                         int const tmpheight = row->height();
2941                         setHeightOfRow(bview, row);
2942                         if (tmpheight == row->height())
2943                                 status(bview, LyXText::NEED_VERY_LITTLE_REFRESH);
2944                         else
2945                                 status(bview, LyXText::NEED_MORE_REFRESH);
2946                         refresh_y = y;
2947                         refresh_row = row;
2948                         setCursor(bview, cursor.par(), cursor.pos(), false, cursor.boundary());
2949                 }
2950         }
2951
2952         // current_font = rawtmpfont;
2953         // real_current_font = realtmpfont;
2954
2955         if (isBoundary(bview->buffer(), cursor.par(), cursor.pos())
2956             != cursor.boundary())
2957                 setCursor(bview, cursor.par(), cursor.pos(), false,
2958                           !cursor.boundary());
2959
2960         lastpos = cursor.par()->size();
2961         if (cursor.pos() == lastpos)
2962                 setCurrentFont(bview);
2963
2964         // check, whether the last characters font has changed.
2965         if (rawparfont !=
2966             cursor.par()->getFontSettings(bview->buffer()->params, lastpos - 1)) {
2967                 redoHeightOfParagraph(bview, cursor);
2968         } else {
2969                 // now the special right address boxes
2970                 if (textclasslist.Style(bview->buffer()->params.textclass,
2971                                         cursor.par()->getLayout()).margintype == MARGIN_RIGHT_ADDRESS_BOX) {
2972                         redoDrawingOfParagraph(bview, cursor);
2973                 }
2974         }
2975 }
2976
2977
2978 bool LyXText::paintRowBackground(DrawRowParams & p)
2979 {
2980         bool clear_area = true;
2981         Inset * inset = 0;
2982         LyXFont font(LyXFont::ALL_SANE);
2983
2984         pos_type const last = rowLastPrintable(p.row);
2985
2986         if (!p.bv->screen()->forceClear() && last == p.row->pos()
2987                 && p.row->par()->isInset(p.row->pos())) {
2988                 inset = p.row->par()->getInset(p.row->pos());
2989                 if (inset) {
2990                         clear_area = inset->doClearArea();
2991                 }
2992         }
2993
2994         if (p.cleared) {
2995                 return true;
2996         }
2997
2998         if (clear_area) {
2999                 int const x = p.xo;
3000                 int const y = p.yo < 0 ? 0 : p.yo;
3001                 int const h = p.yo < 0 ? p.row->height() + p.yo : p.row->height();
3002                 p.pain->fillRectangle(x, y, p.width, h, backgroundColor());
3003                 return true;
3004         }
3005
3006         if (inset == 0)
3007                 return false;
3008
3009         int h = p.row->baseline() - inset->ascent(p.bv, font);
3010
3011         // first clear the whole row above the inset!
3012         if (h > 0) {
3013                 p.pain->fillRectangle(p.xo, p.yo, p.width, h, backgroundColor());
3014         }
3015
3016         // clear the space below the inset!
3017         h += inset->ascent(p.bv, font) + inset->descent(p.bv, font);
3018         if ((p.row->height() - h) > 0) {
3019                 p.pain->fillRectangle(p.xo, p.yo + h,
3020                         p.width, p.row->height() - h, backgroundColor());
3021         }
3022
3023         // clear the space behind the inset, if needed
3024         if (!inset->display() && !inset->needFullRow()) {
3025                 int const xp = int(p.x) + inset->width(p.bv, font);
3026                 if (p.width - xp > 0) {
3027                         p.pain->fillRectangle(xp, p.yo, p.width - xp,
3028                                 p.row->height(), backgroundColor());
3029                 }
3030         }
3031
3032         return false;
3033 }
3034
3035
3036 void LyXText::paintRowSelection(DrawRowParams & p)
3037 {
3038         bool const is_rtl = p.row->par()->isRightToLeftPar(p.bv->buffer()->params);
3039
3040         // the current selection
3041         int const startx = selection.start.x();
3042         int const endx = selection.end.x();
3043         int const starty = selection.start.y();
3044         int const endy = selection.end.y();
3045         Row const * startrow = selection.start.row();
3046         Row const * endrow = selection.end.row();
3047
3048         Row * row = p.row;
3049
3050         if (bidi_same_direction) {
3051                 int x;
3052                 int y = p.yo;
3053                 int w;
3054                 int h = row->height();
3055
3056                 if (startrow == row && endrow == row) {
3057                         if (startx < endx) {
3058                                 x = p.xo + startx;
3059                                 w = endx - startx;
3060                                 p.pain->fillRectangle(x, y, w, h, LColor::selection);
3061                         } else {
3062                                 x = p.xo + endx;
3063                                 w = startx - endx;
3064                                 p.pain->fillRectangle(x, y, w, h, LColor::selection);
3065                         }
3066                 } else if (startrow == row) {
3067                         int const x = (is_rtl) ? p.xo : (p.xo + startx);
3068                         int const w = (is_rtl) ? startx : (p.width - startx);
3069                         p.pain->fillRectangle(x, y, w, h, LColor::selection);
3070                 } else if (endrow == row) {
3071                         int const x = (is_rtl) ? (p.xo + endx) : p.xo;
3072                         int const w = (is_rtl) ? (p.width - endx) : endx;
3073                         p.pain->fillRectangle(x, y, w, h, LColor::selection);
3074                 } else if (p.y > starty && p.y < endy) {
3075                         p.pain->fillRectangle(p.xo, y, p.width, h, LColor::selection);
3076                 }
3077                 return;
3078         } else if (startrow != row && endrow != row) {
3079                 int w = p.width;
3080                 int h = row->height();
3081                 if (p.y > starty && p.y < endy) {
3082                         p.pain->fillRectangle(p.xo, p.yo, w, h, LColor::selection);
3083                 }
3084                 return;
3085         }
3086
3087         if (!((startrow != row && !is_rtl) || (endrow != row && is_rtl))) {
3088                 return;
3089         }
3090
3091         float tmpx = p.x;
3092
3093         p.pain->fillRectangle(p.xo, p.yo, int(p.x), row->height(), LColor::selection);
3094
3095         Buffer const * buffer = p.bv->buffer();
3096         Paragraph * par = row->par();
3097         pos_type main_body = beginningOfMainBody(buffer, par);
3098         pos_type const last = rowLastPrintable(row);
3099
3100         for (pos_type vpos = row->pos(); vpos <= last; ++vpos)  {
3101                 pos_type pos = vis2log(vpos);
3102                 float const old_tmpx = tmpx;
3103                 if (main_body > 0 && pos == main_body - 1) {
3104                         LyXLayout const & layout = textclasslist.Style(buffer->params.textclass,
3105                                 par->getLayout());
3106                         LyXFont const lfont = getLabelFont(buffer, par);
3107
3108
3109                         tmpx += p.label_hfill + lyxfont::width(layout.labelsep, lfont);
3110
3111                         if (par->isLineSeparator(main_body - 1))
3112                                 tmpx -= singleWidth(p.bv, par, main_body - 1);
3113                 }
3114
3115                 if (hfillExpansion(buffer, row, pos)) {
3116                         tmpx += singleWidth(p.bv, par, pos);
3117                         if (pos >= main_body)
3118                                 tmpx += p.hfill;
3119                         else
3120                                 tmpx += p.label_hfill;
3121                 }
3122
3123                 else if (par->isSeparator(pos)) {
3124                         tmpx += singleWidth(p.bv, par, pos);
3125                         if (pos >= main_body)
3126                                 tmpx += p.separator;
3127                 } else {
3128                         tmpx += singleWidth(p.bv, par, pos);
3129                 }
3130
3131                 if ((startrow != row || selection.start.pos() <= pos) &&
3132                         (endrow != row || pos < selection.end.pos())) {
3133                         // Here we do not use p.x as p.xo was added to p.x.
3134                         p.pain->fillRectangle(int(old_tmpx), p.yo,
3135                                 int(tmpx - old_tmpx + 1),
3136                                 row->height(), LColor::selection);
3137                 }
3138
3139                 if ((startrow != row && is_rtl) || (endrow != row && !is_rtl)) {
3140                         p.pain->fillRectangle(p.xo + int(tmpx),
3141                                 p.yo, int(p.bv->workWidth() - tmpx),
3142                                 row->height(), LColor::selection);
3143                 }
3144         }
3145 }
3146
3147
3148 void LyXText::paintRowAppendix(DrawRowParams & p)
3149 {
3150         // FIXME: can be just p.width ?
3151         int const ww = p.bv->workWidth();
3152         Paragraph * firstpar = p.row->par();
3153
3154         if (firstpar->params().appendix()) {
3155                 p.pain->line(1, p.yo, 1, p.yo + p.row->height(), LColor::appendixline);
3156                 p.pain->line(ww - 2, p.yo, ww - 2, p.yo + p.row->height(), LColor::appendixline);
3157         }
3158 }
3159
3160
3161 void LyXText::paintRowDepthBar(DrawRowParams & p)
3162 {
3163         Paragraph::depth_type const depth = p.row->par()->getDepth();
3164
3165         if (depth <= 0)
3166                 return;
3167
3168         Paragraph::depth_type prev_depth = 0;
3169         if (p.row->previous())
3170                 prev_depth = p.row->previous()->par()->getDepth();
3171         Paragraph::depth_type next_depth = 0;
3172         if (p.row->next())
3173                 next_depth = p.row->next()->par()->getDepth();
3174
3175         for (Paragraph::depth_type i = 1; i <= depth; ++i) {
3176                 int const x = (LYX_PAPER_MARGIN / 5) * i + p.xo;
3177                 int const h = p.yo + p.row->height() - 1 - (i - next_depth - 1) * 3;
3178
3179                 p.pain->line(x, p.yo, x, h, LColor::depthbar);
3180
3181                 int const w = LYX_PAPER_MARGIN / 5;
3182
3183                 if (i > prev_depth) {
3184                         p.pain->fillRectangle(x, p.yo, w, 2, LColor::depthbar);
3185                 }
3186                 if (i > next_depth) {
3187                         p.pain->fillRectangle(x, h, w, 2, LColor::depthbar);
3188                 }
3189         }
3190 }
3191
3192
3193 int LyXText::getLengthMarkerHeight(BufferView * bv, VSpace const & vsp) const
3194 {
3195         int const arrow_size = 4;
3196         int const space_size = int(vsp.inPixels(bv));
3197
3198         if (vsp.kind() != VSpace::LENGTH) {
3199                 return space_size;
3200         }
3201
3202         LyXFont font;
3203         font.decSize();
3204         int const min_size = std::max(3 * arrow_size,
3205                                       lyxfont::maxAscent(font)
3206                                       + lyxfont::maxDescent(font));
3207
3208         if (vsp.length().len().value() < 0.0)
3209                 return min_size;
3210         else
3211                 return std::max(min_size, space_size);
3212 }
3213
3214
3215 int LyXText::drawLengthMarker(DrawRowParams & p, string const & prefix,
3216                               VSpace const & vsp, int start)
3217 {
3218         int const arrow_size = 4;
3219         int const size = getLengthMarkerHeight(p.bv, vsp);
3220         int const end = start + size;
3221
3222         // the label to display (if any)
3223         string str;
3224         // y-values for top arrow
3225         int ty1, ty2;
3226         // y-values for bottom arrow
3227         int by1, by2;
3228         switch (vsp.kind()) {
3229         case VSpace::LENGTH:
3230         {
3231                 str = prefix + " (" + vsp.asLyXCommand() + ")";
3232                 // adding or removing space
3233                 bool const added = !(vsp.length().len().value() < 0.0);
3234                 ty1 = added ? (start + arrow_size) : start;
3235                 ty2 = added ? start : (start + arrow_size);
3236                 by1 = added ? (end - arrow_size) : end;
3237                 by2 = added ? end : (end - arrow_size);
3238                 break;
3239         }
3240         case VSpace:: VFILL:
3241                 str = prefix + " (vertical fill)";
3242                 ty1 = ty2 = start;
3243                 by1 = by2 = end;
3244                 break;
3245         default:
3246                 // nothing to draw here
3247                 return size;
3248         }
3249
3250         int const leftx = p.xo + leftMargin(p.bv, p.row);
3251         int const midx = leftx + arrow_size;
3252         int const rightx = midx + arrow_size;
3253
3254         // first the string
3255         int w = 0;
3256         int a = 0;
3257         int d = 0;
3258
3259         LyXFont font;
3260         font.setColor(LColor::added_space).decSize();
3261         lyxfont::rectText(str, font, w, a, d);
3262
3263         p.pain->rectText(leftx + 2 * arrow_size + 5,
3264                          start + ((end - start) / 2) + d,
3265                          str, font,
3266                          backgroundColor(),
3267                          backgroundColor());
3268
3269         // top arrow
3270         p.pain->line(leftx, ty1, midx, ty2, LColor::added_space);
3271         p.pain->line(midx, ty2, rightx, ty1, LColor::added_space);
3272
3273         // bottom arrow
3274         p.pain->line(leftx, by1, midx, by2, LColor::added_space);
3275         p.pain->line(midx, by2, rightx, by1, LColor::added_space);
3276
3277         // joining line
3278         p.pain->line(midx, ty2, midx, by2, LColor::added_space);
3279
3280         return size;
3281 }
3282
3283
3284 void LyXText::paintFirstRow(DrawRowParams & p)
3285 {
3286         Paragraph * par = p.row->par();
3287         ParagraphParameters const & parparams = par->params();
3288
3289         // start of appendix?
3290         if (parparams.startOfAppendix()) {
3291                 p.pain->line(1, p.yo, p.width - 2, p.yo, LColor::appendixline);
3292         }
3293
3294         int y_top = 0;
3295
3296         // think about the margins
3297         if (!p.row->previous() && bv_owner)
3298                 y_top += LYX_PAPER_MARGIN;
3299
3300         // draw a top pagebreak
3301         if (parparams.pagebreakTop()) {
3302                 int const y = p.yo + y_top + 2*defaultHeight();
3303                 p.pain->line(p.xo, y, p.xo + p.width, y,
3304                         LColor::pagebreak, Painter::line_onoffdash);
3305
3306                 int w = 0;
3307                 int a = 0;
3308                 int d = 0;
3309
3310                 LyXFont pb_font;
3311                 pb_font.setColor(LColor::pagebreak).decSize();
3312                 lyxfont::rectText(_("Page Break (top)"), pb_font, w, a, d);
3313                 p.pain->rectText((p.width - w)/2, y + d,
3314                               _("Page Break (top)"), pb_font,
3315                               backgroundColor(),
3316                               backgroundColor());
3317                 y_top += 3 * defaultHeight();
3318         }
3319
3320         // draw the additional space if needed:
3321         y_top += drawLengthMarker(p, _("Space above"),
3322                                   parparams.spaceTop(), p.yo + y_top);
3323
3324         Buffer const * buffer = p.bv->buffer();
3325
3326         LyXLayout const & layout =
3327                 textclasslist.Style(buffer->params.textclass, par->getLayout());
3328
3329         // think about the parskip
3330         // some parskips VERY EASY IMPLEMENTATION
3331         if (buffer->params.paragraph_separation == BufferParams::PARSEP_SKIP) {
3332                 if (par->previous()) {
3333                         if (layout.latextype == LATEX_PARAGRAPH
3334                                 && !par->getDepth()) {
3335                                 y_top += buffer->params.getDefSkip().inPixels(p.bv);
3336                         } else {
3337                                 LyXLayout const & playout =
3338                                         textclasslist.Style(buffer->params.textclass,
3339                                                 par->previous()->getLayout());
3340                                 if (playout.latextype == LATEX_PARAGRAPH
3341                                         && !par->previous()->getDepth()) {
3342                                         // is it right to use defskip here, too? (AS)
3343                                         y_top += buffer->params.getDefSkip().inPixels(p.bv);
3344                                 }
3345                         }
3346                 }
3347         }
3348
3349         int const ww = p.bv->workWidth();
3350
3351         // draw a top line
3352         if (parparams.lineTop()) {
3353                 LyXFont font(LyXFont::ALL_SANE);
3354                 int const asc = lyxfont::ascent('x', getFont(buffer, par, 0));
3355
3356                 y_top += asc;
3357
3358                 int const w = (inset_owner ?  inset_owner->width(p.bv, font) : ww);
3359                 int const xp = static_cast<int>(inset_owner ? p.xo : 0);
3360                 p.pain->line(xp, p.yo + y_top, xp + w, p.yo + y_top,
3361                         LColor::topline, Painter::line_solid,
3362                         Painter::line_thick);
3363
3364                 y_top += asc;
3365         }
3366
3367         bool const is_rtl = p.row->par()->isRightToLeftPar(p.bv->buffer()->params);
3368
3369         // should we print a label?
3370         if (layout.labeltype >= LABEL_STATIC
3371             && (layout.labeltype != LABEL_STATIC
3372                 || layout.latextype != LATEX_ENVIRONMENT
3373                 || par->isFirstInSequence())) {
3374
3375                 LyXFont font = getLabelFont(buffer, par);
3376                 if (!par->getLabelstring().empty()) {
3377                         float x = p.x;
3378                         string const str = par->getLabelstring();
3379
3380                         // this is special code for the chapter layout. This is
3381                         // printed in an extra row and has a pagebreak at
3382                         // the top.
3383                         if (layout.labeltype == LABEL_COUNTER_CHAPTER) {
3384                                 if (buffer->params.secnumdepth >= 0) {
3385                                         float spacing_val = 1.0;
3386                                         if (!parparams.spacing().isDefault()) {
3387                                                 spacing_val = parparams.spacing().getValue();
3388                                         } else {
3389                                                 spacing_val = buffer->params.spacing.getValue();
3390                                         }
3391
3392                                         int const maxdesc =
3393                                                 int(lyxfont::maxDescent(font) * layout.spacing.getValue() * spacing_val)
3394                                                 + int(layout.parsep) * defaultHeight();
3395
3396                                         if (is_rtl) {
3397                                                 x = ww - leftMargin(p.bv, p.row) -
3398                                                         lyxfont::width(str, font);
3399                                         }
3400
3401                                         p.pain->text(int(x),
3402                                                 p.yo + p.row->baseline() -
3403                                                 p.row->ascent_of_text() - maxdesc,
3404                                                 str, font);
3405                                 }
3406                         } else {
3407                                 if (is_rtl) {
3408                                         x = ww - leftMargin(p.bv, p.row)
3409                                                 + lyxfont::width(layout.labelsep, font);
3410                                 } else {
3411                                         x = p.x - lyxfont::width(layout.labelsep, font)
3412                                                 - lyxfont::width(str, font);
3413                                 }
3414
3415                                 p.pain->text(int(x), p.yo + p.row->baseline(), str, font);
3416                         }
3417                 }
3418         // the labels at the top of an environment.
3419         // More or less for bibliography
3420         } else if (par->isFirstInSequence() &&
3421                 (layout.labeltype == LABEL_TOP_ENVIRONMENT ||
3422                 layout.labeltype == LABEL_BIBLIO ||
3423                 layout.labeltype == LABEL_CENTERED_TOP_ENVIRONMENT)) {
3424                 LyXFont font = getLabelFont(buffer, par);
3425                 if (!par->getLabelstring().empty()) {
3426                         string const str = par->getLabelstring();
3427                         float spacing_val = 1.0;
3428                         if (!parparams.spacing().isDefault()) {
3429                                 spacing_val = parparams.spacing().getValue();
3430                         } else {
3431                                 spacing_val = buffer->params.spacing.getValue();
3432                         }
3433
3434                         int maxdesc =
3435                                 int(lyxfont::maxDescent(font) * layout.spacing.getValue() * spacing_val
3436                                 + (layout.labelbottomsep * defaultHeight()));
3437
3438                         float x = p.x;
3439                         if (layout.labeltype == LABEL_CENTERED_TOP_ENVIRONMENT) {
3440                                 x = ((is_rtl ? leftMargin(p.bv, p.row) : p.x)
3441                                          + ww - rightMargin(buffer, p.row) ) / 2;
3442                                 x -= lyxfont::width(str, font) / 2;
3443                         } else if (is_rtl) {
3444                                 x = ww - leftMargin(p.bv, p.row) -
3445                                         lyxfont::width(str, font);
3446                         }
3447                         p.pain->text(int(x), p.yo + p.row->baseline()
3448                                   - p.row->ascent_of_text() - maxdesc,
3449                                   str, font);
3450                 }
3451         }
3452
3453         if (layout.labeltype == LABEL_BIBLIO && par->bibkey) {
3454                 LyXFont font = getLayoutFont(buffer, par);
3455                 float x;
3456                 if (is_rtl) {
3457                         x = ww - leftMargin(p.bv, p.row)
3458                                 + lyxfont::width(layout.labelsep, font);
3459                 } else {
3460                         x = p.x - lyxfont::width(layout.labelsep, font)
3461                                 - par->bibkey->width(p.bv, font);
3462                 }
3463                 par->bibkey->draw(p.bv, font, p.yo + p.row->baseline(), x, p.cleared);
3464         }
3465 }
3466
3467
3468 void LyXText::paintLastRow(DrawRowParams & p)
3469 {
3470         Paragraph * par = p.row->par();
3471         ParagraphParameters const & parparams = par->params();
3472         int y_bottom = p.row->height() - 1;
3473
3474         // think about the margins
3475         if (!p.row->next() && bv_owner)
3476                 y_bottom -= LYX_PAPER_MARGIN;
3477
3478         int const ww = p.bv->workWidth();
3479
3480         // draw a bottom pagebreak
3481         if (parparams.pagebreakBottom()) {
3482                 LyXFont pb_font;
3483                 pb_font.setColor(LColor::pagebreak).decSize();
3484                 int const y = p.yo + y_bottom - 2 * defaultHeight();
3485
3486                 p.pain->line(p.xo, y, p.xo + p.width, y, LColor::pagebreak,
3487                              Painter::line_onoffdash);
3488
3489                 int w = 0;
3490                 int a = 0;
3491                 int d = 0;
3492                 lyxfont::rectText(_("Page Break (bottom)"), pb_font, w, a, d);
3493                 p.pain->rectText((ww - w) / 2, y + d,
3494                         _("Page Break (bottom)"),
3495                         pb_font, backgroundColor(), backgroundColor());
3496
3497                 y_bottom -= 3 * defaultHeight();
3498         }
3499
3500         // draw the additional space if needed:
3501         int const height =  getLengthMarkerHeight(p.bv,
3502                                                   parparams.spaceBottom());
3503         y_bottom -= drawLengthMarker(p, _("Space below"),
3504                                      parparams.spaceBottom(),
3505                                      p.yo + y_bottom - height);
3506
3507         Buffer const * buffer = p.bv->buffer();
3508
3509         // draw a bottom line
3510         if (parparams.lineBottom()) {
3511                 LyXFont font(LyXFont::ALL_SANE);
3512                 int const asc = lyxfont::ascent('x',
3513                         getFont(buffer, par,
3514                         max(pos_type(0), par->size() - 1)));
3515
3516                 y_bottom -= asc;
3517
3518                 int const w = (inset_owner ?  inset_owner->width(p.bv, font) : ww);
3519                 int const xp = static_cast<int>(inset_owner ? p.xo : 0);
3520                 int const y = p.yo + y_bottom;
3521                 p.pain->line(xp, y, xp + w, y, LColor::topline, Painter::line_solid,
3522                           Painter::line_thick);
3523
3524                 y_bottom -= asc;
3525         }
3526
3527         bool const is_rtl = p.row->par()->isRightToLeftPar(p.bv->buffer()->params);
3528         int const endlabel = par->getEndLabel(buffer->params);
3529
3530         // draw an endlabel
3531         switch (endlabel) {
3532         case END_LABEL_BOX:
3533         case END_LABEL_FILLED_BOX:
3534         {
3535                 LyXFont const font = getLabelFont(buffer, par);
3536                 int const size = int(0.75 * lyxfont::maxAscent(font));
3537                 int const y = (p.yo + p.row->baseline()) - size;
3538                 int x = is_rtl ? LYX_PAPER_MARGIN : ww - LYX_PAPER_MARGIN - size;
3539
3540                 if (p.row->fill() <= size)
3541                         x += (size - p.row->fill() + 1) * (is_rtl ? -1 : 1);
3542
3543                 if (endlabel == END_LABEL_BOX) {
3544                         p.pain->rectangle(x, y, size, size, LColor::eolmarker);
3545                 } else {
3546                         p.pain->fillRectangle(x, y, size, size,
3547                                               LColor::eolmarker);
3548                 }
3549                 break;
3550         }
3551         case END_LABEL_STATIC:
3552         {
3553                 LyXFont font(LyXFont::ALL_SANE);
3554                 LyXTextClass::LayoutList::size_type layout = par->getLayout();
3555                 string const str = textclasslist.
3556                         Style(buffer->params.textclass, layout).endlabelstring();
3557                 font = getLabelFont(buffer, par);
3558                 int const x = is_rtl ?
3559                         int(p.x) - lyxfont::width(str, font)
3560                         : ww - rightMargin(buffer, p.row) - p.row->fill();
3561                 p.pain->text(x, p.yo + p.row->baseline(), str, font);
3562                 break;
3563         }
3564         case END_LABEL_NO_LABEL:
3565                 break;
3566         }
3567 }
3568
3569 void LyXText::paintRowText(DrawRowParams & p)
3570 {
3571         Paragraph * par = p.row->par();
3572         Buffer const * buffer = p.bv->buffer();
3573
3574         pos_type const last = rowLastPrintable(p.row);
3575         pos_type main_body =
3576                 beginningOfMainBody(buffer, par);
3577         if (main_body > 0 &&
3578                 (main_body - 1 > last ||
3579                 !par->isLineSeparator(main_body - 1))) {
3580                 main_body = 0;
3581         }
3582
3583         LyXLayout const & layout =
3584                 textclasslist.Style(buffer->params.textclass, par->getLayout());
3585
3586         pos_type vpos = p.row->pos();
3587         while (vpos <= last) {
3588                 pos_type pos = vis2log(vpos);
3589                 if (main_body > 0 && pos == main_body - 1) {
3590                         int const lwidth = lyxfont::width(layout.labelsep,
3591                                 getLabelFont(buffer, par));
3592
3593                         p.x += p.label_hfill + lwidth
3594                                 - singleWidth(p.bv, par, main_body - 1);
3595                 }
3596
3597                 if (par->isHfill(pos)) {
3598                         p.x += 1;
3599
3600                         int const y0 = p.yo + p.row->baseline();
3601                         int const y1 = y0 - defaultHeight() / 2;
3602
3603                         p.pain->line(int(p.x), y1, int(p.x), y0,
3604                                      LColor::added_space);
3605
3606                         if (hfillExpansion(buffer, p.row, pos)) {
3607                                 int const y2 = (y0 + y1) / 2;
3608
3609                                 if (pos >= main_body) {
3610                                         p.pain->line(int(p.x), y2,
3611                                                   int(p.x + p.hfill), y2,
3612                                                   LColor::added_space,
3613                                                   Painter::line_onoffdash);
3614                                         p.x += p.hfill;
3615                                 } else {
3616                                         p.pain->line(int(p.x), y2,
3617                                                   int(p.x + p.label_hfill), y2,
3618                                                   LColor::added_space,
3619                                                   Painter::line_onoffdash);
3620                                         p.x += p.label_hfill;
3621                                 }
3622                                 p.pain->line(int(p.x), y1,
3623                                              int(p.x), y0,
3624                                              LColor::added_space);
3625                         }
3626                         p.x += 2;
3627                         ++vpos;
3628                 } else if (par->isSeparator(pos)) {
3629                         p.x += singleWidth(p.bv, par, pos);
3630                         if (pos >= main_body)
3631                                 p.x += p.separator;
3632                         ++vpos;
3633                 } else {
3634                         draw(p, vpos);
3635                 }
3636         }
3637 }
3638
3639
3640 void LyXText::getVisibleRow(BufferView * bv, int y_offset, int x_offset,
3641                             Row * row, int y, bool cleared)
3642 {
3643         if (row->height() <= 0) {
3644                 lyxerr << "LYX_ERROR: row.height: "
3645                        << row->height() << endl;
3646                 return;
3647         }
3648
3649         DrawRowParams p;
3650
3651         // set up drawing parameters
3652         p.bv = bv;
3653         p.pain = &bv->painter();
3654         p.row = row;
3655         p.xo = x_offset;
3656         p.yo = y_offset;
3657         prepareToPrint(bv, row, p.x, p.separator, p.hfill, p.label_hfill);
3658         if (inset_owner && (p.x < 0))
3659                 p.x = 0;
3660         p.x += p.xo;
3661         p.y = y;
3662         p.width = inset_owner ? inset_owner->textWidth(bv, true) : bv->workWidth();
3663         p.cleared = cleared;
3664
3665         // start painting
3666
3667         // clear to background if necessary
3668         p.cleared = paintRowBackground(p);
3669
3670         // paint the selection background
3671         if (selection.set()) {
3672                 paintRowSelection(p);
3673         }
3674
3675         // vertical lines for appendix
3676         paintRowAppendix(p);
3677
3678         // environment depth brackets
3679         paintRowDepthBar(p);
3680
3681         // draw any stuff wanted for a first row of a paragraph
3682         if (!row->pos()) {
3683                 paintFirstRow(p);
3684         }
3685
3686         // draw any stuff wanted for the last row of a paragraph
3687         if (!row->next() || (row->next()->par() != row->par())) {
3688                 paintLastRow(p);
3689         }
3690
3691         // paint text
3692         paintRowText(p);
3693 }
3694
3695
3696 int LyXText::defaultHeight() const
3697 {
3698         LyXFont font(LyXFont::ALL_SANE);
3699         return int(lyxfont::maxAscent(font) + lyxfont::maxDescent(font) * 1.5);
3700 }
3701
3702
3703 /* returns the column near the specified x-coordinate of the row
3704 * x is set to the real beginning of this column  */
3705 pos_type
3706 LyXText::getColumnNearX(BufferView * bview, Row * row, int & x,
3707                         bool & boundary) const
3708 {
3709         float tmpx = 0.0;
3710         float fill_separator;
3711         float fill_hfill;
3712         float fill_label_hfill;
3713
3714         prepareToPrint(bview, row, tmpx, fill_separator,
3715                        fill_hfill, fill_label_hfill);
3716
3717         pos_type vc = row->pos();
3718         pos_type last = rowLastPrintable(row);
3719         pos_type c = 0;
3720         LyXLayout const & layout =
3721                 textclasslist.Style(bview->buffer()->params.textclass,
3722                                     row->par()->getLayout());
3723         bool left_side = false;
3724
3725         pos_type main_body = beginningOfMainBody(bview->buffer(), row->par());
3726         float last_tmpx = tmpx;
3727
3728         if (main_body > 0 &&
3729             (main_body - 1 > last ||
3730              !row->par()->isLineSeparator(main_body - 1)))
3731                 main_body = 0;
3732
3733         while (vc <= last && tmpx <= x) {
3734                 c = vis2log(vc);
3735                 last_tmpx = tmpx;
3736                 if (main_body > 0 && c == main_body-1) {
3737                         tmpx += fill_label_hfill +
3738                                 lyxfont::width(layout.labelsep,
3739                                                getLabelFont(bview->buffer(), row->par()));
3740                         if (row->par()->isLineSeparator(main_body - 1))
3741                                 tmpx -= singleWidth(bview, row->par(), main_body-1);
3742                 }
3743
3744                 if (hfillExpansion(bview->buffer(), row, c)) {
3745                         x += singleWidth(bview, row->par(), c);
3746                         if (c >= main_body)
3747                                 tmpx += fill_hfill;
3748                         else
3749                                 tmpx += fill_label_hfill;
3750                 }
3751                 else if (row->par()->isSeparator(c)) {
3752                         tmpx += singleWidth(bview, row->par(), c);
3753                         if (c >= main_body)
3754                                 tmpx+= fill_separator;
3755                 } else
3756                         tmpx += singleWidth(bview, row->par(), c);
3757                 ++vc;
3758         }
3759
3760         if ((tmpx + last_tmpx) / 2 > x) {
3761                 tmpx = last_tmpx;
3762                 left_side = true;
3763         }
3764
3765         if (vc > last + 1)  // This shouldn't happen.
3766                 vc = last + 1;
3767
3768         boundary = false;
3769         bool const lastrow = lyxrc.rtl_support // This is not needed, but gives
3770                                          // some speedup if rtl_support=false
3771                 && (!row->next() || row->next()->par() != row->par());
3772         bool const rtl = (lastrow)
3773                 ? row->par()->isRightToLeftPar(bview->buffer()->params)
3774                 : false; // If lastrow is false, we don't need to compute
3775                          // the value of rtl.
3776
3777         if (row->pos() > last)  // Row is empty?
3778                 c = row->pos();
3779         else if (lastrow &&
3780                  ( ( rtl &&  left_side && vc == row->pos() && x < tmpx - 5) ||
3781                    (!rtl && !left_side && vc == last + 1   && x > tmpx + 5) ))
3782                 c = last + 1;
3783         else if (vc == row->pos()) {
3784                 c = vis2log(vc);
3785                 if (bidi_level(c) % 2 == 1)
3786                         ++c;
3787         } else {
3788                 c = vis2log(vc - 1);
3789                 bool const rtl = (bidi_level(c) % 2 == 1);
3790                 if (left_side == rtl) {
3791                         ++c;
3792                         boundary = isBoundary(bview->buffer(), row->par(), c);
3793                 }
3794         }
3795
3796         if (row->pos() <= last && c > last
3797             && row->par()->isNewline(last)) {
3798                 if (bidi_level(last) % 2 == 0)
3799                         tmpx -= singleWidth(bview, row->par(), last);
3800                 else
3801                         tmpx += singleWidth(bview, row->par(), last);
3802                 c = last;
3803         }
3804
3805         c -= row->pos();
3806         x = int(tmpx);
3807         return c;
3808 }
3809
3810
3811 // returns pointer to a specified row
3812 Row * LyXText::getRow(Paragraph * par, pos_type pos, int & y) const
3813 {
3814         if (!firstrow)
3815                 return 0;
3816
3817         Row * tmprow = firstrow;
3818         y = 0;
3819
3820         // find the first row of the specified paragraph
3821         while (tmprow->next() && tmprow->par() != par) {
3822                 y += tmprow->height();
3823                 tmprow = tmprow->next();
3824         }
3825
3826         // now find the wanted row
3827         while (tmprow->pos() < pos
3828                && tmprow->next()
3829                && tmprow->next()->par() == par
3830                && tmprow->next()->pos() <= pos) {
3831                 y += tmprow->height();
3832                 tmprow = tmprow->next();
3833         }
3834
3835         return tmprow;
3836 }
3837
3838
3839 Row * LyXText::getRowNearY(int & y) const
3840 {
3841         // If possible we should optimize this method. (Lgb)
3842         Row * tmprow = firstrow;
3843         int tmpy = 0;
3844
3845         while (tmprow->next() && tmpy + tmprow->height() <= y) {
3846                 tmpy += tmprow->height();
3847                 tmprow = tmprow->next();
3848         }
3849
3850         y = tmpy;   // return the real y
3851         return tmprow;
3852 }
3853
3854
3855 int LyXText::getDepth() const
3856 {
3857         return cursor.par()->getDepth();
3858 }