src/text2.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 "LString.h"
  15 #include "Lsstream.h"
  16 #include "paragraph.h"
  17 #include "funcrequest.h"
  18 #include "frontends/LyXView.h"
  19 #include "undo_funcs.h"
  20 #include "buffer.h"
  21 #include "buffer_funcs.h"
  22 #include "bufferparams.h"
  23 #include "errorlist.h"
  24 #include "gettext.h"
  25 #include "BufferView.h"
  26 #include "CutAndPaste.h"
  27 #include "frontends/Painter.h"
  28 #include "frontends/font_metrics.h"
  29 #include "debug.h"
  30 #include "lyxrc.h"
  31 #include "lyxrow.h"
  32 #include "FloatList.h"
  33 #include "language.h"
  34 #include "ParagraphParameters.h"
  35 #include "counters.h"
  36 #include "lyxrow_funcs.h"
  37 #include "metricsinfo.h"
  38 #include "paragraph_funcs.h"
  39
  40 #include "insets/insetbibitem.h"
  41 #include "insets/insetenv.h"
  42 #include "insets/insetfloat.h"
  43 #include "insets/insetwrap.h"
  44
  45 #include "support/LAssert.h"
  46 #include "support/textutils.h"
  47 #include "support/lstrings.h"
  48
  49 #include <boost/tuple/tuple.hpp>
  50
  51 #include <algorithm>
  52
  53 using namespace lyx::support;
  54
  55 using std::vector;
  56 using std::copy;
  57 using std::endl;
  58 using std::find;
  59 using std::pair;
  60 using lyx::pos_type;
  61
  62
  63 LyXText::LyXText(BufferView * bv)
  64         : height(0), width(0), anchor_row_offset_(0),
  65           inset_owner(0), the_locking_inset(0), bv_owner(bv)
  66 {
  67         anchor_row_ = rows().end();
  68 }
  69
  70
  71 LyXText::LyXText(BufferView * bv, InsetText * inset)
  72         : height(0), width(0), anchor_row_offset_(0),
  73           inset_owner(inset), the_locking_inset(0), bv_owner(bv)
  74 {
  75         anchor_row_ = rows().end();
  76 }
  77
  78
  79 void LyXText::init(BufferView * bview)
  80 {
  81         bv_owner = bview;
  82
  83         rowlist_.clear();
  84         width = height = 0;
  85
  86         anchor_row_ = rows().end();
  87         anchor_row_offset_ = 0;
  88
  89         current_font = getFont(ownerParagraphs().begin(), 0);
  90
  91         redoParagraphs(ownerParagraphs().begin(), ownerParagraphs().end());
  92
  93         setCursorIntern(rowlist_.begin()->par(), 0);
  94         selection.cursor = cursor;
  95
  96         updateCounters();
  97 }
  98
  99
 100 // Gets the fully instantiated font at a given position in a paragraph
 101 // Basically the same routine as Paragraph::getFont() in paragraph.C.
 102 // The difference is that this one is used for displaying, and thus we
 103 // are allowed to make cosmetic improvements. For instance make footnotes
 104 // smaller. (Asger)
 105 // If position is -1, we get the layout font of the paragraph.
 106 // If position is -2, we get the font of the manual label of the paragraph.
 107 LyXFont LyXText::getFont(ParagraphList::iterator pit, pos_type pos) const
 108 {
 109         Assert(pos >= 0);
 110
 111         LyXLayout_ptr const & layout = pit->layout();
 112 #warning broken?
 113         BufferParams const & params = bv()->buffer()->params;
 114
 115         // We specialize the 95% common case:
 116         if (!pit->getDepth()) {
 117                 if (layout->labeltype == LABEL_MANUAL
 118                     && pos < pit->beginningOfBody()) {
 119                         // 1% goes here
 120                         LyXFont f = pit->getFontSettings(params, pos);
 121                         if (pit->inInset())
 122                                 pit->inInset()->getDrawFont(f);
 123                         return f.realize(layout->reslabelfont);
 124                 } else {
 125                         LyXFont f = pit->getFontSettings(params, pos);
 126                         if (pit->inInset())
 127                                 pit->inInset()->getDrawFont(f);
 128                         return f.realize(layout->resfont);
 129                 }
 130         }
 131
 132         // The uncommon case need not be optimized as much
 133
 134         LyXFont layoutfont;
 135
 136         if (pos < pit->beginningOfBody()) {
 137                 // 1% goes here
 138                 layoutfont = layout->labelfont;
 139         } else {
 140                 // 99% goes here
 141                 layoutfont = layout->font;
 142         }
 143
 144         LyXFont tmpfont = pit->getFontSettings(params, pos);
 145         tmpfont.realize(layoutfont);
 146
 147         if (pit->inInset())
 148                 pit->inInset()->getDrawFont(tmpfont);
 149
 150         // Realize with the fonts of lesser depth.
 151         tmpfont.realize(outerFont(pit, ownerParagraphs()));
 152         tmpfont.realize(defaultfont_);
 153
 154         return tmpfont;
 155 }
 156
 157
 158 LyXFont LyXText::getLayoutFont(ParagraphList::iterator pit) const
 159 {
 160         LyXLayout_ptr const & layout = pit->layout();
 161
 162         if (!pit->getDepth())
 163                 return layout->resfont;
 164
 165         LyXFont font = layout->font;
 166         // Realize with the fonts of lesser depth.
 167         font.realize(outerFont(pit, ownerParagraphs()));
 168         font.realize(defaultfont_);
 169
 170         return font;
 171 }
 172
 173
 174 LyXFont LyXText::getLabelFont(ParagraphList::iterator pit) const
 175 {
 176         LyXLayout_ptr const & layout = pit->layout();
 177
 178         if (!pit->getDepth())
 179                 return layout->reslabelfont;
 180
 181         LyXFont font = layout->labelfont;
 182         // Realize with the fonts of lesser depth.
 183         font.realize(outerFont(pit, ownerParagraphs()));
 184         font.realize(defaultfont_);
 185
 186         return font;
 187 }
 188
 189
 190 void LyXText::setCharFont(ParagraphList::iterator pit,
 191                           pos_type pos, LyXFont const & fnt,
 192                           bool toggleall)
 193 {
 194         BufferParams const & params = bv()->buffer()->params;
 195         LyXFont font = getFont(pit, pos);
 196         font.update(fnt, params.language, toggleall);
 197         // Let the insets convert their font
 198         if (pit->isInset(pos)) {
 199                 InsetOld * inset = pit->getInset(pos);
 200                 if (isEditableInset(inset)) {
 201                         static_cast<UpdatableInset *>(inset)
 202                                 ->setFont(bv(), fnt, toggleall, true);
 203                 }
 204         }
 205
 206         // Plug through to version below:
 207         setCharFont(pit, pos, font);
 208 }
 209
 210
 211 void LyXText::setCharFont(
 212         ParagraphList::iterator pit, pos_type pos, LyXFont const & fnt)
 213 {
 214         LyXFont font = fnt;
 215         LyXLayout_ptr const & layout = pit->layout();
 216
 217         // Get concrete layout font to reduce against
 218         LyXFont layoutfont;
 219
 220         if (pos < pit->beginningOfBody())
 221                 layoutfont = layout->labelfont;
 222         else
 223                 layoutfont = layout->font;
 224
 225         // Realize against environment font information
 226         if (pit->getDepth()) {
 227                 ParagraphList::iterator tp = pit;
 228                 while (!layoutfont.resolved() &&
 229                        tp != ownerParagraphs().end() &&
 230                        tp->getDepth()) {
 231                         tp = outerHook(tp, ownerParagraphs());
 232                         if (tp != ownerParagraphs().end())
 233                                 layoutfont.realize(tp->layout()->font);
 234                 }
 235         }
 236
 237         layoutfont.realize(defaultfont_);
 238
 239         // Now, reduce font against full layout font
 240         font.reduce(layoutfont);
 241
 242         pit->setFont(pos, font);
 243 }
 244
 245
 246 // removes the row and reset the touched counters
 247 void LyXText::removeRow(RowList::iterator rit)
 248 {
 249         if (anchor_row_ == rit) {
 250                 if (rit != rows().begin()) {
 251                         anchor_row_ = boost::prior(rit);
 252                         anchor_row_offset_ += anchor_row_->height();
 253                 } else {
 254                         anchor_row_ = boost::next(rit);
 255                         anchor_row_offset_ -= rit->height();
 256                 }
 257         }
 258
 259         // the text becomes smaller
 260         height -= rit->height();
 261
 262         rowlist_.erase(rit);
 263 }
 264
 265
 266 // remove all following rows of the paragraph of the specified row.
 267 void LyXText::removeParagraph(RowList::iterator rit)
 268 {
 269         ParagraphList::iterator tmppit = rit->par();
 270         ++rit;
 271
 272         while (rit != rows().end() && rit->par() == tmppit) {
 273                 RowList::iterator tmprit = boost::next(rit);
 274                 removeRow(rit);
 275                 rit = tmprit;
 276         }
 277 }
 278
 279
 280 void LyXText::insertParagraph(ParagraphList::iterator pit,
 281                               RowList::iterator rit)
 282 {
 283         // insert a new row, starting at position 0
 284         rit = rowlist_.insert(rit, Row(pit, 0));
 285
 286         // and now append the whole paragraph before the new row
 287         appendParagraph(rit);
 288 }
 289
 290
 291 InsetOld * LyXText::getInset() const
 292 {
 293         ParagraphList::iterator pit = cursor.par();
 294         pos_type const pos = cursor.pos();
 295
 296         if (pos < pit->size() && pit->isInset(pos)) {
 297                 return pit->getInset(pos);
 298         }
 299         return 0;
 300 }
 301
 302
 303 void LyXText::toggleInset()
 304 {
 305         InsetOld * inset = getInset();
 306         // is there an editable inset at cursor position?
 307         if (!isEditableInset(inset)) {
 308                 // No, try to see if we are inside a collapsable inset
 309                 if (inset_owner && inset_owner->owner()
 310                     && inset_owner->owner()->isOpen()) {
 311                         bv()->unlockInset(inset_owner->owner());
 312                         inset_owner->owner()->close(bv());
 313                         bv()->getLyXText()->cursorRight(bv());
 314                 }
 315                 return;
 316         }
 317         //bv()->owner()->message(inset->editMessage());
 318
 319         // do we want to keep this?? (JMarc)
 320         if (!isHighlyEditableInset(inset))
 321                 recordUndo(bv(), Undo::ATOMIC);
 322
 323         if (inset->isOpen())
 324                 inset->close(bv());
 325         else
 326                 inset->open(bv());
 327
 328         bv()->updateInset();
 329 }
 330
 331
 332 /* used in setlayout */
 333 // Asger is not sure we want to do this...
 334 void LyXText::makeFontEntriesLayoutSpecific(BufferParams const & params,
 335                                             Paragraph & par)
 336 {
 337         LyXLayout_ptr const & layout = par.layout();
 338         pos_type const psize = par.size();
 339
 340         LyXFont layoutfont;
 341         for (pos_type pos = 0; pos < psize; ++pos) {
 342                 if (pos < par.beginningOfBody())
 343                         layoutfont = layout->labelfont;
 344                 else
 345                         layoutfont = layout->font;
 346
 347                 LyXFont tmpfont = par.getFontSettings(params, pos);
 348                 tmpfont.reduce(layoutfont);
 349                 par.setFont(pos, tmpfont);
 350         }
 351 }
 352
 353
 354 ParagraphList::iterator
 355 LyXText::setLayout(LyXCursor & cur, LyXCursor & sstart_cur,
 356                    LyXCursor & send_cur,
 357                    string const & layout)
 358 {
 359         ParagraphList::iterator endpit = boost::next(send_cur.par());
 360         ParagraphList::iterator undoendpit = endpit;
 361         ParagraphList::iterator pars_end = ownerParagraphs().end();
 362
 363         if (endpit != pars_end && endpit->getDepth()) {
 364                 while (endpit != pars_end && endpit->getDepth()) {
 365                         ++endpit;
 366                         undoendpit = endpit;
 367                 }
 368         } else if (endpit != pars_end) {
 369                 // because of parindents etc.
 370                 ++endpit;
 371         }
 372
 373         recordUndo(bv(), Undo::ATOMIC, sstart_cur.par(), boost::prior(undoendpit));
 374
 375         // ok we have a selection. This is always between sstart_cur
 376         // and sel_end cursor
 377         cur = sstart_cur;
 378         ParagraphList::iterator pit = sstart_cur.par();
 379         ParagraphList::iterator epit = boost::next(send_cur.par());
 380
 381         LyXLayout_ptr const & lyxlayout =
 382                 bv()->buffer()->params.getLyXTextClass()[layout];
 383
 384         do {
 385                 pit->applyLayout(lyxlayout);
 386                 makeFontEntriesLayoutSpecific(bv()->buffer()->params, *pit);
 387                 ParagraphList::iterator fppit = pit;
 388                 fppit->params().spaceTop(lyxlayout->fill_top ?
 389                                          VSpace(VSpace::VFILL)
 390                                          : VSpace(VSpace::NONE));
 391                 fppit->params().spaceBottom(lyxlayout->fill_bottom ?
 392                                             VSpace(VSpace::VFILL)
 393                                             : VSpace(VSpace::NONE));
 394                 if (lyxlayout->margintype == MARGIN_MANUAL)
 395                         pit->setLabelWidthString(lyxlayout->labelstring());
 396                 cur.par(pit);
 397                 ++pit;
 398         } while (pit != epit);
 399
 400         return endpit;
 401 }
 402
 403
 404 // set layout over selection and make a total rebreak of those paragraphs
 405 void LyXText::setLayout(string const & layout)
 406 {
 407         LyXCursor tmpcursor = cursor;  // store the current cursor
 408
 409         // if there is no selection just set the layout
 410         // of the current paragraph
 411         if (!selection.set()) {
 412                 selection.start = cursor;  // dummy selection
 413                 selection.end = cursor;
 414         }
 415
 416         // special handling of new environment insets
 417         BufferParams const & params = bv()->buffer()->params;
 418         LyXLayout_ptr const & lyxlayout = params.getLyXTextClass()[layout];
 419         if (lyxlayout->is_environment) {
 420                 // move everything in a new environment inset
 421                 lyxerr << "setting layout " << layout << endl;
 422                 bv()->owner()->dispatch(FuncRequest(LFUN_HOME));
 423                 bv()->owner()->dispatch(FuncRequest(LFUN_ENDSEL));
 424                 bv()->owner()->dispatch(FuncRequest(LFUN_CUT));
 425                 InsetOld * inset = new InsetEnvironment(params, layout);
 426                 if (bv()->insertInset(inset)) {
 427                         //inset->edit(bv());
 428                         //bv()->owner()->dispatch(FuncRequest(LFUN_PASTE));
 429                 }
 430                 else
 431                         delete inset;
 432                 return;
 433         }
 434
 435         ParagraphList::iterator endpit = setLayout(cursor, selection.start,
 436                                                    selection.end, layout);
 437         redoParagraphs(selection.start.par(), endpit);
 438
 439         // we have to reset the selection, because the
 440         // geometry could have changed
 441         setCursor(selection.start.par(), selection.start.pos(), false);
 442         selection.cursor = cursor;
 443         setCursor(selection.end.par(), selection.end.pos(), false);
 444         updateCounters();
 445         clearSelection();
 446         setSelection();
 447         setCursor(tmpcursor.par(), tmpcursor.pos(), true);
 448 }
 449
 450
 451 bool LyXText::changeDepth(bv_funcs::DEPTH_CHANGE type, bool test_only)
 452 {
 453         ParagraphList::iterator pit(cursor.par());
 454         ParagraphList::iterator end(cursor.par());
 455         ParagraphList::iterator start = pit;
 456
 457         if (selection.set()) {
 458                 pit = selection.start.par();
 459                 end = selection.end.par();
 460                 start = pit;
 461         }
 462
 463         ParagraphList::iterator pastend = boost::next(end);
 464
 465         if (!test_only)
 466                 recordUndo(bv(), Undo::ATOMIC, start, end);
 467
 468         bool changed = false;
 469
 470         int prev_after_depth = 0;
 471 #warning parlist ... could be nicer ?
 472         if (start != ownerParagraphs().begin()) {
 473                 prev_after_depth = boost::prior(start)->getMaxDepthAfter();
 474         }
 475
 476         while (true) {
 477                 int const depth = pit->params().depth();
 478                 if (type == bv_funcs::INC_DEPTH) {
 479                         if (depth < prev_after_depth
 480                             && pit->layout()->labeltype != LABEL_BIBLIO) {
 481                                 changed = true;
 482                                 if (!test_only) {
 483                                         pit->params().depth(depth + 1);
 484                                 }
 485
 486                         }
 487                 } else if (depth) {
 488                         changed = true;
 489                         if (!test_only)
 490                                 pit->params().depth(depth - 1);
 491                 }
 492
 493                 prev_after_depth = pit->getMaxDepthAfter();
 494
 495                 if (pit == end) {
 496                         break;
 497                 }
 498
 499                 ++pit;
 500         }
 501
 502         if (test_only)
 503                 return changed;
 504
 505
 506         redoParagraphs(start, pastend);
 507
 508         // We need to actually move the text->cursor. I don't
 509         // understand why ...
 510         LyXCursor tmpcursor = cursor;
 511
 512         // we have to reset the visual selection because the
 513         // geometry could have changed
 514         if (selection.set()) {
 515                 setCursor(selection.start.par(), selection.start.pos());
 516                 selection.cursor = cursor;
 517                 setCursor(selection.end.par(), selection.end.pos());
 518         }
 519
 520         // this handles the counter labels, and also fixes up
 521         // depth values for follow-on (child) paragraphs
 522         updateCounters();
 523
 524         setSelection();
 525         setCursor(tmpcursor.par(), tmpcursor.pos());
 526
 527         return changed;
 528 }
 529
 530
 531 // set font over selection and make a total rebreak of those paragraphs
 532 void LyXText::setFont(LyXFont const & font, bool toggleall)
 533 {
 534         // if there is no selection just set the current_font
 535         if (!selection.set()) {
 536                 // Determine basis font
 537                 LyXFont layoutfont;
 538                 if (cursor.pos() < cursor.par()->beginningOfBody()) {
 539                         layoutfont = getLabelFont(cursor.par());
 540                 } else {
 541                         layoutfont = getLayoutFont(cursor.par());
 542                 }
 543                 // Update current font
 544                 real_current_font.update(font,
 545                                          bv()->buffer()->params.language,
 546                                          toggleall);
 547
 548                 // Reduce to implicit settings
 549                 current_font = real_current_font;
 550                 current_font.reduce(layoutfont);
 551                 // And resolve it completely
 552                 real_current_font.realize(layoutfont);
 553
 554                 return;
 555         }
 556
 557         LyXCursor tmpcursor = cursor; // store the current cursor
 558
 559         // ok we have a selection. This is always between sel_start_cursor
 560         // and sel_end cursor
 561
 562         recordUndo(bv(), Undo::ATOMIC, selection.start.par(), selection.end.par());
 563         freezeUndo();
 564         cursor = selection.start;
 565         while (cursor.par() != selection.end.par() ||
 566                cursor.pos() < selection.end.pos())
 567         {
 568                 if (cursor.pos() < cursor.par()->size()) {
 569                         // an open footnote should behave like a closed one
 570                         setCharFont(cursor.par(), cursor.pos(),
 571                                     font, toggleall);
 572                         cursor.pos(cursor.pos() + 1);
 573                 } else {
 574                         cursor.pos(0);
 575                         cursor.par(boost::next(cursor.par()));
 576                 }
 577         }
 578         unFreezeUndo();
 579
 580         redoParagraph(selection.start.par());
 581
 582         // we have to reset the selection, because the
 583         // geometry could have changed, but we keep
 584         // it for user convenience
 585         setCursor(selection.start.par(), selection.start.pos());
 586         selection.cursor = cursor;
 587         setCursor(selection.end.par(), selection.end.pos());
 588         setSelection();
 589         setCursor(tmpcursor.par(), tmpcursor.pos(), true,
 590                   tmpcursor.boundary());
 591 }
 592
 593
 594 void LyXText::redoHeightOfParagraph()
 595 {
 596         RowList::iterator tmprow = cursorRow();
 597
 598         setHeightOfRow(tmprow);
 599
 600         while (tmprow != rows().begin()
 601                && boost::prior(tmprow)->par() == tmprow->par()) {
 602                 --tmprow;
 603                 setHeightOfRow(tmprow);
 604         }
 605
 606         setCursor(cursor.par(), cursor.pos(), false, cursor.boundary());
 607 }
 608
 609
 610 RowList::iterator LyXText::firstRow(ParagraphList::iterator pit)
 611 {
 612         RowList::iterator rit;
 613         for (rit = rows().begin(); rit != rows().end(); ++rit)
 614                 if (rit->par() == pit)
 615                         break;
 616         return rit;
 617 }
 618
 619
 620 // rebreaks all paragraphs between the specified pars
 621 // This function is needed after SetLayout and SetFont etc.
 622 void LyXText::redoParagraphs(ParagraphList::iterator start,
 623   ParagraphList::iterator end)
 624 {
 625         for ( ; start != end; ++start)
 626                 redoParagraph(start);
 627 }
 628
 629
 630 void LyXText::redoParagraph(ParagraphList::iterator pit)
 631 {
 632         RowList::iterator rit = firstRow(pit);
 633
 634         // remove paragraph from rowlist
 635         while (rit != rows().end() && rit->par() == pit) {
 636                 RowList::iterator rit2 = rit++;
 637                 removeRow(rit2);
 638         }
 639
 640         // reinsert the paragraph
 641         // insert a new row, starting at position 0
 642         Row newrow(pit, 0);
 643         rit = rowlist_.insert(rit, newrow);
 644         //newrow.dump("newrow: ");
 645
 646         // and now append the whole paragraph before the new row
 647         pos_type const last = rit->par()->size();
 648         bool done = false;
 649
 650         do {
 651                 pos_type z = rowBreakPoint(*rit);
 652
 653                 RowList::iterator tmprow = rit;
 654                 //tmprow->dump("tmprow: ");
 655
 656                 if (z < last) {
 657                         ++z;
 658                         Row newrow(rit->par(), z);
 659                         //newrow.dump("newrow2: ");
 660                         rit = rowlist_.insert(boost::next(rit), newrow);
 661                 } else {
 662                         done = true;
 663                 }
 664
 665                 // Set the dimensions of the row
 666                 // fixed fill setting now by calling inset->update() in
 667                 // SingleWidth when needed!
 668                 //tmprow->dump("tmprow 1: ");
 669                 tmprow->fill(fill(tmprow, workWidth()));
 670                 //tmprow->dump("tmprow 2: ");
 671                 setHeightOfRow(tmprow);
 672                 //tmprow->dump("tmprow 3: ");
 673                 height += rit->height();
 674
 675         } while (!done);
 676
 677         setHeightOfRow(rows().begin());
 678 }
 679
 680
 681 void LyXText::fullRebreak()
 682 {
 683         lyxerr << "fullRebreak" << endl;
 684         redoParagraphs(ownerParagraphs().begin(), ownerParagraphs().end());
 685         setCursorIntern(cursor.par(), cursor.pos());
 686         selection.cursor = cursor;
 687 }
 688
 689
 690 void LyXText::metrics(MetricsInfo & mi, Dimension & dim)
 691 {
 692         //lyxerr << "LyXText::metrics: width: " << mi.base.textwidth << endl;
 693         //Assert(mi.base.textwidth);
 694
 695         // rebuild row cache
 696         rowlist_.clear();
 697         width = height = 0;
 698
 699         anchor_row_ = rows().end();
 700         anchor_row_offset_ = 0;
 701
 702         ParagraphList::iterator pit = ownerParagraphs().begin();
 703         ParagraphList::iterator end = ownerParagraphs().end();
 704
 705         for (; pit != end; ++pit) {
 706                 InsetList::iterator ii = pit->insetlist.begin();
 707                 InsetList::iterator iend = pit->insetlist.end();
 708                 for (; ii != iend; ++ii) {
 709                         Dimension dim;
 710                         MetricsInfo m = mi;
 711 #warning FIXME: pos != 0
 712                         m.base.font = getFont(pit, 0);
 713                         ii->inset->metrics(m, dim);
 714                 }
 715
 716 #if 1
 717                 // insert a new row, starting at position 0
 718                 Row newrow(pit, 0);
 719                 RowList::iterator rit = rowlist_.insert(rowlist_.end(), newrow);
 720
 721                 // and now append the whole paragraph before the new row
 722                 appendParagraph(rit);
 723 #else
 724                 redoParagraph(pit);
 725 #endif
 726         }
 727
 728         // compute height
 729         //lyxerr << "height 0: " << height << endl;
 730         //for (RowList::iterator rit = rows().begin(); rit != rows().end(); ++rit) {
 731         //      height += rit->height();
 732         //}
 733         //lyxerr << "height 1: " << height << endl;
 734
 735         // final dimension
 736         dim.asc = rows().begin()->ascent_of_text();
 737         dim.des = height - dim.asc;
 738         dim.wid = std::max(mi.base.textwidth, int(width));
 739 }
 740
 741
 742 void LyXText::partialRebreak()
 743 {
 744         if (rows().empty()) {
 745                 init(bv());
 746                 return;
 747         }
 748         breakAgain(rows().begin());
 749 }
 750
 751
 752 // important for the screen
 753
 754
 755 // the cursor set functions have a special mechanism. When they
 756 // realize, that you left an empty paragraph, they will delete it.
 757 // They also delete the corresponding row
 758
 759 // need the selection cursor:
 760 void LyXText::setSelection()
 761 {
 762         TextCursor::setSelection();
 763 }
 764
 765
 766
 767 void LyXText::clearSelection()
 768 {
 769         TextCursor::clearSelection();
 770
 771         // reset this in the bv_owner!
 772         if (bv_owner && bv_owner->text)
 773                 bv_owner->text->xsel_cache.set(false);
 774 }
 775
 776
 777 void LyXText::cursorHome()
 778 {
 779         setCursor(cursor.par(), cursorRow()->pos());
 780 }
 781
 782
 783 void LyXText::cursorEnd()
 784 {
 785         if (cursor.par()->empty())
 786                 return;
 787
 788         RowList::iterator rit = cursorRow();
 789         RowList::iterator next_rit = boost::next(rit);
 790         ParagraphList::iterator pit = rit->par();
 791         pos_type last_pos = lastPos(*this, rit);
 792
 793         if (next_rit == rows().end() || next_rit->par() != pit) {
 794                 ++last_pos;
 795         } else {
 796                 if (pit->empty() ||
 797                     (pit->getChar(last_pos) != ' ' && !pit->isNewline(last_pos))) {
 798                         ++last_pos;
 799                 }
 800         }
 801
 802         setCursor(pit, last_pos);
 803 }
 804
 805
 806 void LyXText::cursorTop()
 807 {
 808         setCursor(ownerParagraphs().begin(), 0);
 809 }
 810
 811
 812 void LyXText::cursorBottom()
 813 {
 814         ParagraphList::iterator lastpit =
 815                 boost::prior(ownerParagraphs().end());
 816         setCursor(lastpit, lastpit->size());
 817 }
 818
 819
 820 void LyXText::toggleFree(LyXFont const & font, bool toggleall)
 821 {
 822         // If the mask is completely neutral, tell user
 823         if (font == LyXFont(LyXFont::ALL_IGNORE)) {
 824                 // Could only happen with user style
 825                 bv()->owner()->message(_("No font change defined. Use Character under the Layout menu to define font change."));
 826                 return;
 827         }
 828
 829         // Try implicit word selection
 830         // If there is a change in the language the implicit word selection
 831         // is disabled.
 832         LyXCursor resetCursor = cursor;
 833         bool implicitSelection = (font.language() == ignore_language
 834                                   && font.number() == LyXFont::IGNORE)
 835                 ? selectWordWhenUnderCursor(lyx::WHOLE_WORD_STRICT) : false;
 836
 837         // Set font
 838         setFont(font, toggleall);
 839
 840         // Implicit selections are cleared afterwards
 841         //and cursor is set to the original position.
 842         if (implicitSelection) {
 843                 clearSelection();
 844                 cursor = resetCursor;
 845                 setCursor(cursor.par(), cursor.pos());
 846                 selection.cursor = cursor;
 847         }
 848 }
 849
 850
 851 string LyXText::getStringToIndex()
 852 {
 853         // Try implicit word selection
 854         // If there is a change in the language the implicit word selection
 855         // is disabled.
 856         LyXCursor const reset_cursor = cursor;
 857         bool const implicitSelection =
 858                 selectWordWhenUnderCursor(lyx::PREVIOUS_WORD);
 859
 860         string idxstring;
 861         if (!selection.set())
 862                 bv()->owner()->message(_("Nothing to index!"));
 863         else if (selection.start.par() != selection.end.par())
 864                 bv()->owner()->message(_("Cannot index more than one paragraph!"));
 865         else
 866                 idxstring = selectionAsString(bv()->buffer(), false);
 867
 868         // Reset cursors to their original position.
 869         cursor = reset_cursor;
 870         setCursor(cursor.par(), cursor.pos());
 871         selection.cursor = cursor;
 872
 873         // Clear the implicit selection.
 874         if (implicitSelection)
 875                 clearSelection();
 876
 877         return idxstring;
 878 }
 879
 880
 881 // the DTP switches for paragraphs. LyX will store them in the first
 882 // physicla paragraph. When a paragraph is broken, the top settings rest,
 883 // the bottom settings are given to the new one. So I can make shure,
 884 // they do not duplicate themself and you cannnot make dirty things with
 885 // them!
 886
 887 void LyXText::setParagraph(bool line_top, bool line_bottom,
 888                            bool pagebreak_top, bool pagebreak_bottom,
 889                            VSpace const & space_top,
 890                            VSpace const & space_bottom,
 891                            Spacing const & spacing,
 892                            LyXAlignment align,
 893                            string const & labelwidthstring,
 894                            bool noindent)
 895 {
 896         LyXCursor tmpcursor = cursor;
 897         if (!selection.set()) {
 898                 selection.start = cursor;
 899                 selection.end = cursor;
 900         }
 901
 902         // make sure that the depth behind the selection are restored, too
 903         ParagraphList::iterator endpit = boost::next(selection.end.par());
 904         ParagraphList::iterator undoendpit = endpit;
 905         ParagraphList::iterator pars_end = ownerParagraphs().end();
 906
 907         if (endpit != pars_end && endpit->getDepth()) {
 908                 while (endpit != pars_end && endpit->getDepth()) {
 909                         ++endpit;
 910                         undoendpit = endpit;
 911                 }
 912         } else if (endpit != pars_end) {
 913                 // because of parindents etc.
 914                 ++endpit;
 915         }
 916
 917         recordUndo(bv(), Undo::ATOMIC, selection.start.par(),
 918                 boost::prior(undoendpit));
 919
 920
 921         ParagraphList::iterator tmppit = selection.end.par();
 922
 923         while (tmppit != boost::prior(selection.start.par())) {
 924                 setCursor(tmppit, 0);
 925
 926                 ParagraphList::iterator pit = cursor.par();
 927                 ParagraphParameters & params = pit->params();
 928
 929                 params.lineTop(line_top);
 930                 params.lineBottom(line_bottom);
 931                 params.pagebreakTop(pagebreak_top);
 932                 params.pagebreakBottom(pagebreak_bottom);
 933                 params.spaceTop(space_top);
 934                 params.spaceBottom(space_bottom);
 935                 params.spacing(spacing);
 936                 // does the layout allow the new alignment?
 937                 LyXLayout_ptr const & layout = pit->layout();
 938
 939                 if (align == LYX_ALIGN_LAYOUT)
 940                         align = layout->align;
 941                 if (align & layout->alignpossible) {
 942                         if (align == layout->align)
 943                                 params.align(LYX_ALIGN_LAYOUT);
 944                         else
 945                                 params.align(align);
 946                 }
 947                 pit->setLabelWidthString(labelwidthstring);
 948                 params.noindent(noindent);
 949                 tmppit = boost::prior(pit);
 950         }
 951
 952         redoParagraphs(selection.start.par(), endpit);
 953
 954         clearSelection();
 955         setCursor(selection.start.par(), selection.start.pos());
 956         selection.cursor = cursor;
 957         setCursor(selection.end.par(), selection.end.pos());
 958         setSelection();
 959         setCursor(tmpcursor.par(), tmpcursor.pos());
 960         if (inset_owner)
 961                 bv()->updateInset();
 962 }
 963
 964
 965 // set the counter of a paragraph. This includes the labels
 966 void LyXText::setCounter(Buffer const * buf, ParagraphList::iterator pit)
 967 {
 968         LyXTextClass const & textclass = buf->params.getLyXTextClass();
 969         LyXLayout_ptr const & layout = pit->layout();
 970
 971         if (pit != ownerParagraphs().begin()) {
 972
 973                 pit->params().appendix(boost::prior(pit)->params().appendix());
 974                 if (!pit->params().appendix() &&
 975                     pit->params().startOfAppendix()) {
 976                         pit->params().appendix(true);
 977                         textclass.counters().reset();
 978                 }
 979                 pit->enumdepth = boost::prior(pit)->enumdepth;
 980                 pit->itemdepth = boost::prior(pit)->itemdepth;
 981         } else {
 982                 pit->params().appendix(pit->params().startOfAppendix());
 983                 pit->enumdepth = 0;
 984                 pit->itemdepth = 0;
 985         }
 986
 987         /* Maybe we have to increment the enumeration depth.
 988          * BUT, enumeration in a footnote is considered in isolation from its
 989          *      surrounding paragraph so don't increment if this is the
 990          *      first line of the footnote
 991          * AND, bibliographies can't have their depth changed ie. they
 992          *      are always of depth 0
 993          */
 994         if (pit != ownerParagraphs().begin()
 995             && boost::prior(pit)->getDepth() < pit->getDepth()
 996             && boost::prior(pit)->layout()->labeltype == LABEL_COUNTER_ENUMI
 997             && pit->enumdepth < 3
 998             && layout->labeltype != LABEL_BIBLIO) {
 999                 pit->enumdepth++;
1000         }
1001
1002         // Maybe we have to decrement the enumeration depth, see note above
1003         if (pit != ownerParagraphs().begin()
1004             && boost::prior(pit)->getDepth() > pit->getDepth()
1005             && layout->labeltype != LABEL_BIBLIO) {
1006                 pit->enumdepth = depthHook(pit, ownerParagraphs(),
1007                                            pit->getDepth())->enumdepth;
1008         }
1009
1010         if (!pit->params().labelString().empty()) {
1011                 pit->params().labelString(string());
1012         }
1013
1014         if (layout->margintype == MARGIN_MANUAL) {
1015                 if (pit->params().labelWidthString().empty()) {
1016                         pit->setLabelWidthString(layout->labelstring());
1017                 }
1018         } else {
1019                 pit->setLabelWidthString(string());
1020         }
1021
1022         // is it a layout that has an automatic label?
1023         if (layout->labeltype >= LABEL_COUNTER_CHAPTER) {
1024                 int const i = layout->labeltype - LABEL_COUNTER_CHAPTER;
1025
1026                 ostringstream s;
1027
1028                 if (i >= 0 && i <= buf->params.secnumdepth) {
1029                         string numbertype;
1030                         string langtype;
1031
1032                         textclass.counters().step(layout->latexname());
1033
1034                         // Is there a label? Useful for Chapter layout
1035                         if (!pit->params().appendix()) {
1036                                 s << buf->B_(layout->labelstring());
1037                         } else {
1038                                 s << buf->B_(layout->labelstring_appendix());
1039                         }
1040
1041                         // Use of an integer is here less than elegant. For now.
1042                         int head = textclass.maxcounter() - LABEL_COUNTER_CHAPTER;
1043                         if (!pit->params().appendix()) {
1044                                 numbertype = "sectioning";
1045                         } else {
1046                                 numbertype = "appendix";
1047                                 if (pit->isRightToLeftPar(buf->params))
1048                                         langtype = "hebrew";
1049                                 else
1050                                         langtype = "latin";
1051                         }
1052
1053                         s << " "
1054                           << textclass.counters()
1055                                 .numberLabel(layout->latexname(),
1056                                              numbertype, langtype, head);
1057
1058                         pit->params().labelString(STRCONV(s.str()));
1059
1060                         // reset enum counters
1061                         textclass.counters().reset("enum");
1062                 } else if (layout->labeltype < LABEL_COUNTER_ENUMI) {
1063                         textclass.counters().reset("enum");
1064                 } else if (layout->labeltype == LABEL_COUNTER_ENUMI) {
1065                         // FIXME
1066                         // Yes I know this is a really, really! bad solution
1067                         // (Lgb)
1068                         string enumcounter("enum");
1069
1070                         switch (pit->enumdepth) {
1071                         case 2:
1072                                 enumcounter += 'i';
1073                         case 1:
1074                                 enumcounter += 'i';
1075                         case 0:
1076                                 enumcounter += 'i';
1077                                 break;
1078                         case 3:
1079                                 enumcounter += "iv";
1080                                 break;
1081                         default:
1082                                 // not a valid enumdepth...
1083                                 break;
1084                         }
1085
1086                         textclass.counters().step(enumcounter);
1087
1088                         s << textclass.counters()
1089                                 .numberLabel(enumcounter, "enumeration");
1090                         pit->params().labelString(STRCONV(s.str()));
1091                 }
1092         } else if (layout->labeltype == LABEL_BIBLIO) {// ale970302
1093                 textclass.counters().step("bibitem");
1094                 int number = textclass.counters().value("bibitem");
1095                 if (pit->bibitem()) {
1096                         pit->bibitem()->setCounter(number);
1097                         pit->params().labelString(layout->labelstring());
1098                 }
1099                 // In biblio should't be following counters but...
1100         } else {
1101                 string s = buf->B_(layout->labelstring());
1102
1103                 // the caption hack:
1104                 if (layout->labeltype == LABEL_SENSITIVE) {
1105                         ParagraphList::iterator end = ownerParagraphs().end();
1106                         ParagraphList::iterator tmppit = pit;
1107                         InsetOld * in = 0;
1108                         bool isOK = false;
1109                         while (tmppit != end && tmppit->inInset()
1110                                // the single '=' is intended below
1111                                && (in = tmppit->inInset()->owner()))
1112                         {
1113                                 if (in->lyxCode() == InsetOld::FLOAT_CODE ||
1114                                     in->lyxCode() == InsetOld::WRAP_CODE) {
1115                                         isOK = true;
1116                                         break;
1117                                 } else {
1118                                         tmppit = ownerParagraphs().begin();
1119                                         for ( ; tmppit != end; ++tmppit)
1120                                                 if (&*tmppit == in->parOwner())
1121                                                         break;
1122                                 }
1123                         }
1124
1125                         if (isOK) {
1126                                 string type;
1127
1128                                 if (in->lyxCode() == InsetOld::FLOAT_CODE)
1129                                         type = static_cast<InsetFloat*>(in)->params().type;
1130                                 else if (in->lyxCode() == InsetOld::WRAP_CODE)
1131                                         type = static_cast<InsetWrap*>(in)->params().type;
1132                                 else
1133                                         Assert(0);
1134
1135                                 Floating const & fl = textclass.floats().getType(type);
1136
1137                                 textclass.counters().step(fl.type());
1138
1139                                 // Doesn't work... yet.
1140                                 s = bformat(_("%1$s #:"), buf->B_(fl.name()));
1141                         } else {
1142                                 // par->SetLayout(0);
1143                                 // s = layout->labelstring;
1144                                 s = _("Senseless: ");
1145                         }
1146                 }
1147                 pit->params().labelString(s);
1148
1149                 // reset the enumeration counter. They are always reset
1150                 // when there is any other layout between
1151                 // Just fall-through between the cases so that all
1152                 // enum counters deeper than enumdepth is also reset.
1153                 switch (pit->enumdepth) {
1154                 case 0:
1155                         textclass.counters().reset("enumi");
1156                 case 1:
1157                         textclass.counters().reset("enumii");
1158                 case 2:
1159                         textclass.counters().reset("enumiii");
1160                 case 3:
1161                         textclass.counters().reset("enumiv");
1162                 }
1163         }
1164 }
1165
1166
1167 // Updates all counters. Paragraphs with changed label string will be rebroken
1168 void LyXText::updateCounters()
1169 {
1170         RowList::iterator rowit = rows().begin();
1171         ParagraphList::iterator pit = rowit->par();
1172
1173         // CHECK if this is really needed. (Lgb)
1174         bv()->buffer()->params.getLyXTextClass().counters().reset();
1175
1176         ParagraphList::iterator beg = ownerParagraphs().begin();
1177         ParagraphList::iterator end = ownerParagraphs().end();
1178         for (; pit != end; ++pit) {
1179                 while (rowit->par() != pit)
1180                         ++rowit;
1181
1182                 string const oldLabel = pit->params().labelString();
1183
1184                 size_t maxdepth = 0;
1185                 if (pit != beg)
1186                         maxdepth = boost::prior(pit)->getMaxDepthAfter();
1187
1188                 if (pit->params().depth() > maxdepth)
1189                         pit->params().depth(maxdepth);
1190
1191                 // setCounter can potentially change the labelString.
1192                 setCounter(bv()->buffer(), pit);
1193
1194                 string const & newLabel = pit->params().labelString();
1195
1196                 if (oldLabel.empty() && !newLabel.empty()) {
1197                         removeParagraph(rowit);
1198                         appendParagraph(rowit);
1199                 }
1200         }
1201 }
1202
1203
1204 void LyXText::insertInset(InsetOld * inset)
1205 {
1206         if (!cursor.par()->insetAllowed(inset->lyxCode()))
1207                 return;
1208         recordUndo(bv(), Undo::ATOMIC, cursor.par());
1209         freezeUndo();
1210         cursor.par()->insertInset(cursor.pos(), inset);
1211         // Just to rebreak and refresh correctly.
1212         // The character will not be inserted a second time
1213         insertChar(Paragraph::META_INSET);
1214         // If we enter a highly editable inset the cursor should be to before
1215         // the inset. This couldn't happen before as Undo was not handled inside
1216         // inset now after the Undo LyX tries to call inset->Edit(...) again
1217         // and cannot do this as the cursor is behind the inset and GetInset
1218         // does not return the inset!
1219         if (isHighlyEditableInset(inset)) {
1220                 cursorLeft(true);
1221         }
1222         unFreezeUndo();
1223 }
1224
1225
1226 void LyXText::cutSelection(bool doclear, bool realcut)
1227 {
1228         // Stuff what we got on the clipboard. Even if there is no selection.
1229
1230         // There is a problem with having the stuffing here in that the
1231         // larger the selection the slower LyX will get. This can be
1232         // solved by running the line below only when the selection has
1233         // finished. The solution used currently just works, to make it
1234         // faster we need to be more clever and probably also have more
1235         // calls to stuffClipboard. (Lgb)
1236         bv()->stuffClipboard(selectionAsString(bv()->buffer(), true));
1237
1238         // This doesn't make sense, if there is no selection
1239         if (!selection.set())
1240                 return;
1241
1242         // OK, we have a selection. This is always between selection.start
1243         // and selection.end
1244
1245         // make sure that the depth behind the selection are restored, too
1246         ParagraphList::iterator endpit = boost::next(selection.end.par());
1247         ParagraphList::iterator undoendpit = endpit;
1248         ParagraphList::iterator pars_end = ownerParagraphs().end();
1249
1250         if (endpit != pars_end && endpit->getDepth()) {
1251                 while (endpit != pars_end && endpit->getDepth()) {
1252                         ++endpit;
1253                         undoendpit = endpit;
1254                 }
1255         } else if (endpit != pars_end) {
1256                 // because of parindents etc.
1257                 ++endpit;
1258         }
1259
1260         recordUndo(bv(), Undo::DELETE, selection.start.par(),
1261                    boost::prior(undoendpit));
1262
1263
1264         endpit = selection.end.par();
1265         int endpos = selection.end.pos();
1266
1267         boost::tie(endpit, endpos) = realcut ?
1268                 CutAndPaste::cutSelection(bv()->buffer()->params,
1269                                           ownerParagraphs(),
1270                                           selection.start.par(), endpit,
1271                                           selection.start.pos(), endpos,
1272                                           bv()->buffer()->params.textclass,
1273                                           doclear)
1274                 : CutAndPaste::eraseSelection(bv()->buffer()->params,
1275                                               ownerParagraphs(),
1276                                               selection.start.par(), endpit,
1277                                               selection.start.pos(), endpos,
1278                                               doclear);
1279         // sometimes necessary
1280         if (doclear)
1281                 selection.start.par()->stripLeadingSpaces();
1282
1283         redoParagraphs(selection.start.par(), boost::next(endpit));
1284         // cutSelection can invalidate the cursor so we need to set
1285         // it anew. (Lgb)
1286         // we prefer the end for when tracking changes
1287         cursor.pos(endpos);
1288         cursor.par(endpit);
1289
1290         // need a valid cursor. (Lgb)
1291         clearSelection();
1292
1293         setCursor(cursor.par(), cursor.pos());
1294         selection.cursor = cursor;
1295         updateCounters();
1296 }
1297
1298
1299 void LyXText::copySelection()
1300 {
1301         // stuff the selection onto the X clipboard, from an explicit copy request
1302         bv()->stuffClipboard(selectionAsString(bv()->buffer(), true));
1303
1304         // this doesnt make sense, if there is no selection
1305         if (!selection.set())
1306                 return;
1307
1308         // ok we have a selection. This is always between selection.start
1309         // and sel_end cursor
1310
1311         // copy behind a space if there is one
1312         while (selection.start.par()->size() > selection.start.pos()
1313                && selection.start.par()->isLineSeparator(selection.start.pos())
1314                && (selection.start.par() != selection.end.par()
1315                    || selection.start.pos() < selection.end.pos()))
1316                 selection.start.pos(selection.start.pos() + 1);
1317
1318         CutAndPaste::copySelection(selection.start.par(),
1319                                    selection.end.par(),
1320                                    selection.start.pos(), selection.end.pos(),
1321                                    bv()->buffer()->params.textclass);
1322 }
1323
1324
1325 void LyXText::pasteSelection(size_t sel_index)
1326 {
1327         // this does not make sense, if there is nothing to paste
1328         if (!CutAndPaste::checkPastePossible())
1329                 return;
1330
1331         recordUndo(bv(), Undo::INSERT, cursor.par());
1332
1333         ParagraphList::iterator endpit;
1334         PitPosPair ppp;
1335
1336         ErrorList el;
1337
1338         boost::tie(ppp, endpit) =
1339                 CutAndPaste::pasteSelection(*bv()->buffer(),
1340                                             ownerParagraphs(),
1341                                             cursor.par(), cursor.pos(),
1342                                             bv()->buffer()->params.textclass,
1343                                             sel_index, el);
1344         bufferErrors(*bv()->buffer(), el);
1345         bv()->showErrorList(_("Paste"));
1346
1347         redoParagraphs(cursor.par(), endpit);
1348
1349         setCursor(cursor.par(), cursor.pos());
1350         clearSelection();
1351
1352         selection.cursor = cursor;
1353         setCursor(ppp.first, ppp.second);
1354         setSelection();
1355         updateCounters();
1356 }
1357
1358
1359 void LyXText::setSelectionRange(lyx::pos_type length)
1360 {
1361         if (!length)
1362                 return;
1363
1364         selection.cursor = cursor;
1365         while (length--)
1366                 cursorRight(bv());
1367         setSelection();
1368 }
1369
1370
1371 // simple replacing. The font of the first selected character is used
1372 void LyXText::replaceSelectionWithString(string const & str)
1373 {
1374         recordUndo(bv(), Undo::ATOMIC);
1375         freezeUndo();
1376
1377         if (!selection.set()) { // create a dummy selection
1378                 selection.end = cursor;
1379                 selection.start = cursor;
1380         }
1381
1382         // Get font setting before we cut
1383         pos_type pos = selection.end.pos();
1384         LyXFont const font = selection.start.par()
1385                 ->getFontSettings(bv()->buffer()->params,
1386                                   selection.start.pos());
1387
1388         // Insert the new string
1389         string::const_iterator cit = str.begin();
1390         string::const_iterator end = str.end();
1391         for (; cit != end; ++cit) {
1392                 selection.end.par()->insertChar(pos, (*cit), font);
1393                 ++pos;
1394         }
1395
1396         // Cut the selection
1397         cutSelection(true, false);
1398
1399         unFreezeUndo();
1400 }
1401
1402
1403 // needed to insert the selection
1404 void LyXText::insertStringAsLines(string const & str)
1405 {
1406         ParagraphList::iterator pit = cursor.par();
1407         pos_type pos = cursor.pos();
1408         ParagraphList::iterator endpit = boost::next(cursor.par());
1409
1410         recordUndo(bv(), Undo::ATOMIC);
1411
1412         // only to be sure, should not be neccessary
1413         clearSelection();
1414
1415         bv()->buffer()->insertStringAsLines(pit, pos, current_font, str);
1416
1417         redoParagraphs(cursor.par(), endpit);
1418         setCursor(cursor.par(), cursor.pos());
1419         selection.cursor = cursor;
1420         setCursor(pit, pos);
1421         setSelection();
1422 }
1423
1424
1425 // turns double-CR to single CR, others where converted into one
1426 // blank. Then InsertStringAsLines is called
1427 void LyXText::insertStringAsParagraphs(string const & str)
1428 {
1429         string linestr(str);
1430         bool newline_inserted = false;
1431         string::size_type const siz = linestr.length();
1432
1433         for (string::size_type i = 0; i < siz; ++i) {
1434                 if (linestr[i] == '\n') {
1435                         if (newline_inserted) {
1436                                 // we know that \r will be ignored by
1437                                 // InsertStringA. Of course, it is a dirty
1438                                 // trick, but it works...
1439                                 linestr[i - 1] = '\r';
1440                                 linestr[i] = '\n';
1441                         } else {
1442                                 linestr[i] = ' ';
1443                                 newline_inserted = true;
1444                         }
1445                 } else if (IsPrintable(linestr[i])) {
1446                         newline_inserted = false;
1447                 }
1448         }
1449         insertStringAsLines(linestr);
1450 }
1451
1452
1453 void LyXText::checkParagraph(ParagraphList::iterator pit, pos_type pos)
1454 {
1455         breakAgain(getRow(pit, pos));
1456         setCursorIntern(cursor.par(), cursor.pos(), false, cursor.boundary());
1457 }
1458
1459
1460 // returns false if inset wasn't found
1461 bool LyXText::updateInset(InsetOld * inset)
1462 {
1463         // first check the current paragraph
1464         int pos = cursor.par()->getPositionOfInset(inset);
1465         if (pos != -1) {
1466                 checkParagraph(cursor.par(), pos);
1467                 return true;
1468         }
1469
1470         // check every paragraph
1471         ParagraphList::iterator par = ownerParagraphs().begin();
1472         ParagraphList::iterator end = ownerParagraphs().end();
1473         for (; par != end; ++par) {
1474                 pos = par->getPositionOfInset(inset);
1475                 if (pos != -1) {
1476                         checkParagraph(par, pos);
1477                         return true;
1478                 }
1479         }
1480
1481         return false;
1482 }
1483
1484
1485 bool LyXText::setCursor(ParagraphList::iterator pit,
1486                         pos_type pos,
1487                         bool setfont, bool boundary)
1488 {
1489         LyXCursor old_cursor = cursor;
1490         setCursorIntern(pit, pos, setfont, boundary);
1491         return deleteEmptyParagraphMechanism(old_cursor);
1492 }
1493
1494
1495 void LyXText::setCursor(LyXCursor & cur, ParagraphList::iterator pit,
1496                         pos_type pos, bool boundary)
1497 {
1498         Assert(pit != ownerParagraphs().end());
1499
1500         cur.par(pit);
1501         cur.pos(pos);
1502         cur.boundary(boundary);
1503         if (rows().empty())
1504                 return;
1505
1506         // get the cursor y position in text
1507         int y = 0;
1508         RowList::iterator row = getRow(pit, pos, y);
1509         RowList::iterator beg = rows().begin();
1510
1511         RowList::iterator old_row = row;
1512         // if we are before the first char of this row and are still in the
1513         // same paragraph and there is a previous row then put the cursor on
1514         // the end of the previous row
1515         cur.iy(y + row->baseline());
1516         if (row != beg &&
1517             pos &&
1518             boost::prior(row)->par() == row->par() &&
1519             pos < pit->size() &&
1520             pit->getChar(pos) == Paragraph::META_INSET) {
1521                 InsetOld * ins = pit->getInset(pos);
1522                 if (ins && (ins->needFullRow() || ins->display())) {
1523                         --row;
1524                         y -= row->height();
1525                 }
1526         }
1527
1528         // y is now the beginning of the cursor row
1529         y += row->baseline();
1530         // y is now the cursor baseline
1531         cur.y(y);
1532
1533         pos_type last = lastPrintablePos(*this, old_row);
1534
1535         // None of these should happen, but we're scaredy-cats
1536         if (pos > pit->size()) {
1537                 lyxerr << "dont like 1 please report" << endl;
1538                 pos = 0;
1539                 cur.pos(0);
1540         } else if (pos > last + 1) {
1541                 lyxerr << "dont like 2 please report" << endl;
1542                 // This shouldn't happen.
1543                 pos = last + 1;
1544                 cur.pos(pos);
1545         } else if (pos < row->pos()) {
1546                 lyxerr << "dont like 3 please report" << endl;
1547                 pos = row->pos();
1548                 cur.pos(pos);
1549         }
1550
1551         // now get the cursors x position
1552         float x = getCursorX(row, pos, last, boundary);
1553         cur.x(int(x));
1554         cur.x_fix(cur.x());
1555         if (old_row != row) {
1556                 x = getCursorX(old_row, pos, last, boundary);
1557                 cur.ix(int(x));
1558         } else
1559                 cur.ix(cur.x());
1560 /* We take out this for the time being because 1) the redraw code is not
1561    prepared to this yet and 2) because some good policy has yet to be decided
1562    while editting: for instance how to act on rows being created/deleted
1563    because of DEPM.
1564 */
1565 #if 0
1566         //if the cursor is in a visible row, anchor to it
1567         int topy = top_y();
1568         if (topy < y && y < topy + bv()->workHeight())
1569                 anchor_row(row);
1570 #endif
1571 }
1572
1573
1574 float LyXText::getCursorX(RowList::iterator rit,
1575                           pos_type pos, pos_type last, bool boundary) const
1576 {
1577         pos_type cursor_vpos = 0;
1578         double x;
1579         double fill_separator;
1580         double fill_hfill;
1581         double fill_label_hfill;
1582         // This call HAS to be here because of the BidiTables!!!
1583         prepareToPrint(rit, x, fill_separator, fill_hfill,
1584                        fill_label_hfill);
1585
1586         ParagraphList::iterator rit_par = rit->par();
1587         pos_type const rit_pos = rit->pos();
1588
1589         if (last < rit_pos)
1590                 cursor_vpos = rit_pos;
1591         else if (pos > last && !boundary)
1592                 cursor_vpos = (rit_par->isRightToLeftPar(bv()->buffer()->params))
1593                         ? rit_pos : last + 1;
1594         else if (pos > rit_pos && (pos > last || boundary))
1595                 /// Place cursor after char at (logical) position pos - 1
1596                 cursor_vpos = (bidi_level(pos - 1) % 2 == 0)
1597                         ? log2vis(pos - 1) + 1 : log2vis(pos - 1);
1598         else
1599                 /// Place cursor before char at (logical) position pos
1600                 cursor_vpos = (bidi_level(pos) % 2 == 0)
1601                         ? log2vis(pos) : log2vis(pos) + 1;
1602
1603         pos_type body_pos = rit_par->beginningOfBody();
1604         if (body_pos > 0 &&
1605             (body_pos - 1 > last || !rit_par->isLineSeparator(body_pos - 1)))
1606                 body_pos = 0;
1607
1608         for (pos_type vpos = rit_pos; vpos < cursor_vpos; ++vpos) {
1609                 pos_type pos = vis2log(vpos);
1610                 if (body_pos > 0 && pos == body_pos - 1) {
1611                         x += fill_label_hfill +
1612                                 font_metrics::width(
1613                                         rit_par->layout()->labelsep, getLabelFont(rit_par));
1614                         if (rit_par->isLineSeparator(body_pos - 1))
1615                                 x -= singleWidth(rit_par, body_pos - 1);
1616                 }
1617
1618                 if (hfillExpansion(*this, rit, pos)) {
1619                         x += singleWidth(rit_par, pos);
1620                         if (pos >= body_pos)
1621                                 x += fill_hfill;
1622                         else
1623                                 x += fill_label_hfill;
1624                 } else if (rit_par->isSeparator(pos)) {
1625                         x += singleWidth(rit_par, pos);
1626                         if (pos >= body_pos)
1627                                 x += fill_separator;
1628                 } else
1629                         x += singleWidth(rit_par, pos);
1630         }
1631         return x;
1632 }
1633
1634
1635 void LyXText::setCursorIntern(ParagraphList::iterator pit,
1636                               pos_type pos, bool setfont, bool boundary)
1637 {
1638         UpdatableInset * it = pit->inInset();
1639         if (it) {
1640                 if (it != inset_owner) {
1641                         lyxerr[Debug::INSETS] << "InsetText   is " << it
1642                                               << endl
1643                                               << "inset_owner is "
1644                                               << inset_owner << endl;
1645 #ifdef WITH_WARNINGS
1646 #warning I believe this code is wrong. (Lgb)
1647 #warning Jürgen, have a look at this. (Lgb)
1648 #warning Hmmm, I guess you are right but we
1649 #warning should verify when this is needed
1650 #endif
1651                         // Jürgen, would you like to have a look?
1652                         // I guess we need to move the outer cursor
1653                         // and open and lock the inset (bla bla bla)
1654                         // stuff I don't know... so can you have a look?
1655                         // (Lgb)
1656                         // I moved the lyxerr stuff in here so we can see if
1657                         // this is actually really needed and where!
1658                         // (Jug)
1659                         // it->getLyXText(bv())->setCursorIntern(bv(), par, pos, setfont, boundary);
1660                         return;
1661                 }
1662         }
1663
1664         setCursor(cursor, pit, pos, boundary);
1665         if (setfont)
1666                 setCurrentFont();
1667 }
1668
1669
1670 void LyXText::setCurrentFont()
1671 {
1672         pos_type pos = cursor.pos();
1673         ParagraphList::iterator pit = cursor.par();
1674
1675         if (cursor.boundary() && pos > 0)
1676                 --pos;
1677
1678         if (pos > 0) {
1679                 if (pos == pit->size())
1680                         --pos;
1681                 else // potentional bug... BUG (Lgb)
1682                         if (pit->isSeparator(pos)) {
1683                                 if (pos > cursorRow()->pos() &&
1684                                     bidi_level(pos) % 2 ==
1685                                     bidi_level(pos - 1) % 2)
1686                                         --pos;
1687                                 else if (pos + 1 < pit->size())
1688                                         ++pos;
1689                         }
1690         }
1691
1692         current_font = pit->getFontSettings(bv()->buffer()->params, pos);
1693         real_current_font = getFont(pit, pos);
1694
1695         if (cursor.pos() == pit->size() &&
1696             isBoundary(bv()->buffer(), *pit, cursor.pos()) &&
1697             !cursor.boundary()) {
1698                 Language const * lang =
1699                         pit->getParLanguage(bv()->buffer()->params);
1700                 current_font.setLanguage(lang);
1701                 current_font.setNumber(LyXFont::OFF);
1702                 real_current_font.setLanguage(lang);
1703                 real_current_font.setNumber(LyXFont::OFF);
1704         }
1705 }
1706
1707
1708 // returns the column near the specified x-coordinate of the row
1709 // x is set to the real beginning of this column
1710 pos_type
1711 LyXText::getColumnNearX(RowList::iterator rit, int & x, bool & boundary) const
1712 {
1713         double tmpx = 0;
1714         double fill_separator;
1715         double fill_hfill;
1716         double fill_label_hfill;
1717
1718         prepareToPrint(rit, tmpx, fill_separator, fill_hfill, fill_label_hfill);
1719
1720         pos_type vc = rit->pos();
1721         pos_type last = lastPrintablePos(*this, rit);
1722         pos_type c = 0;
1723
1724         ParagraphList::iterator rit_par = rit->par();
1725         LyXLayout_ptr const & layout = rit->par()->layout();
1726
1727         bool left_side = false;
1728
1729         pos_type body_pos = rit_par->beginningOfBody();
1730         double last_tmpx = tmpx;
1731
1732         if (body_pos > 0 &&
1733             (body_pos - 1 > last ||
1734              !rit_par->isLineSeparator(body_pos - 1)))
1735                 body_pos = 0;
1736
1737         // check for empty row
1738         if (!rit_par->size()) {
1739                 x = int(tmpx);
1740                 return 0;
1741         }
1742
1743         while (vc <= last && tmpx <= x) {
1744                 c = vis2log(vc);
1745                 last_tmpx = tmpx;
1746                 if (body_pos > 0 && c == body_pos - 1) {
1747                         tmpx += fill_label_hfill +
1748                                 font_metrics::width(layout->labelsep, getLabelFont(rit_par));
1749                         if (rit_par->isLineSeparator(body_pos - 1))
1750                                 tmpx -= singleWidth(rit_par, body_pos - 1);
1751                 }
1752
1753                 if (hfillExpansion(*this, rit, c)) {
1754                         tmpx += singleWidth(rit_par, c);
1755                         if (c >= body_pos)
1756                                 tmpx += fill_hfill;
1757                         else
1758                                 tmpx += fill_label_hfill;
1759                 } else if (rit_par->isSeparator(c)) {
1760                         tmpx += singleWidth(rit_par, c);
1761                         if (c >= body_pos)
1762                                 tmpx += fill_separator;
1763                 } else {
1764                         tmpx += singleWidth(rit_par, c);
1765                 }
1766                 ++vc;
1767         }
1768
1769         if ((tmpx + last_tmpx) / 2 > x) {
1770                 tmpx = last_tmpx;
1771                 left_side = true;
1772         }
1773
1774         if (vc > last + 1)  // This shouldn't happen.
1775                 vc = last + 1;
1776
1777         boundary = false;
1778         // This (rtl_support test) is not needed, but gives
1779         // some speedup if rtl_support=false
1780         RowList::iterator next_rit = boost::next(rit);
1781
1782         bool const lastrow = lyxrc.rtl_support &&
1783                 (next_rit == rowlist_.end() ||
1784                  next_rit->par() != rit_par);
1785
1786         // If lastrow is false, we don't need to compute
1787         // the value of rtl.
1788         bool const rtl = (lastrow)
1789                 ? rit_par->isRightToLeftPar(bv()->buffer()->params)
1790                 : false;
1791         if (lastrow &&
1792                  ((rtl &&  left_side && vc == rit->pos() && x < tmpx - 5) ||
1793                    (!rtl && !left_side && vc == last + 1   && x > tmpx + 5)))
1794                 c = last + 1;
1795         else if (vc == rit->pos()) {
1796                 c = vis2log(vc);
1797                 if (bidi_level(c) % 2 == 1)
1798                         ++c;
1799         } else {
1800                 c = vis2log(vc - 1);
1801                 bool const rtl = (bidi_level(c) % 2 == 1);
1802                 if (left_side == rtl) {
1803                         ++c;
1804                         boundary = isBoundary(bv()->buffer(), *rit_par, c);
1805                 }
1806         }
1807
1808         if (rit->pos() <= last && c > last
1809             && rit_par->isNewline(last)) {
1810                 if (bidi_level(last) % 2 == 0)
1811                         tmpx -= singleWidth(rit_par, last);
1812                 else
1813                         tmpx += singleWidth(rit_par, last);
1814                 c = last;
1815         }
1816
1817         c -= rit->pos();
1818         x = int(tmpx);
1819         return c;
1820 }
1821
1822
1823 void LyXText::setCursorFromCoordinates(int x, int y)
1824 {
1825         //LyXCursor old_cursor = cursor;
1826         setCursorFromCoordinates(cursor, x, y);
1827         setCurrentFont();
1828 #warning DEPM disabled, otherwise crash when entering new table
1829         //deleteEmptyParagraphMechanism(old_cursor);
1830 }
1831
1832
1833 namespace {
1834
1835         /**
1836          * return true if the cursor given is at the end of a row,
1837          * and the next row is filled by an inset that spans an entire
1838          * row.
1839          */
1840         bool beforeFullRowInset(LyXText & lt, LyXCursor const & cur)
1841         {
1842                 RowList::iterator row = lt.getRow(cur);
1843                 if (boost::next(row) == lt.rows().end())
1844                         return false;
1845
1846                 Row const & next = *boost::next(row);
1847
1848                 if (next.pos() != cur.pos() || next.par() != cur.par())
1849                         return false;
1850
1851                 if (cur.pos() == cur.par()->size()
1852                     || !cur.par()->isInset(cur.pos()))
1853                         return false;
1854
1855                 InsetOld const * inset = cur.par()->getInset(cur.pos());
1856                 if (inset->needFullRow() || inset->display())
1857                         return true;
1858
1859                 return false;
1860         }
1861 }
1862
1863
1864 void LyXText::setCursorFromCoordinates(LyXCursor & cur, int x, int y)
1865 {
1866         // Get the row first.
1867
1868         RowList::iterator row = getRowNearY(y);
1869         bool bound = false;
1870         pos_type const column = getColumnNearX(row, x, bound);
1871         cur.par(row->par());
1872         cur.pos(row->pos() + column);
1873         cur.x(x);
1874         cur.y(y + row->baseline());
1875
1876         if (beforeFullRowInset(*this, cur)) {
1877                 pos_type const last = lastPrintablePos(*this, row);
1878                 RowList::iterator next_row = boost::next(row);
1879
1880                 float x = getCursorX(next_row, cur.pos(), last, bound);
1881                 cur.ix(int(x));
1882                 cur.iy(y + row->height() + next_row->baseline());
1883         } else {
1884                 cur.iy(cur.y());
1885                 cur.ix(cur.x());
1886         }
1887         cur.boundary(bound);
1888 }
1889
1890
1891 void LyXText::cursorLeft(bool internal)
1892 {
1893         if (cursor.pos() > 0) {
1894                 bool boundary = cursor.boundary();
1895                 setCursor(cursor.par(), cursor.pos() - 1, true, false);
1896                 if (!internal && !boundary &&
1897                     isBoundary(bv()->buffer(), *cursor.par(), cursor.pos() + 1))
1898                         setCursor(cursor.par(), cursor.pos() + 1, true, true);
1899         } else if (cursor.par() != ownerParagraphs().begin()) {
1900                 // steps into the paragraph above
1901                 ParagraphList::iterator pit = boost::prior(cursor.par());
1902                 setCursor(pit, pit->size());
1903         }
1904 }
1905
1906
1907 void LyXText::cursorRight(bool internal)
1908 {
1909         bool const at_end = (cursor.pos() == cursor.par()->size());
1910         bool const at_newline = !at_end &&
1911                 cursor.par()->isNewline(cursor.pos());
1912
1913         if (!internal && cursor.boundary() && !at_newline)
1914                 setCursor(cursor.par(), cursor.pos(), true, false);
1915         else if (!at_end) {
1916                 setCursor(cursor.par(), cursor.pos() + 1, true, false);
1917                 if (!internal &&
1918                     isBoundary(bv()->buffer(), *cursor.par(), cursor.pos()))
1919                         setCursor(cursor.par(), cursor.pos(), true, true);
1920         } else if (boost::next(cursor.par()) != ownerParagraphs().end())
1921                 setCursor(boost::next(cursor.par()), 0);
1922 }
1923
1924
1925 void LyXText::cursorUp(bool selecting)
1926 {
1927 #if 1
1928         int x = cursor.x_fix();
1929         int y = cursor.y() - cursorRow()->baseline() - 1;
1930         setCursorFromCoordinates(x, y);
1931         if (!selecting) {
1932                 int topy = top_y();
1933                 int y1 = cursor.iy() - topy;
1934                 int y2 = y1;
1935                 y -= topy;
1936                 InsetOld * inset_hit = checkInsetHit(x, y1);
1937                 if (inset_hit && isHighlyEditableInset(inset_hit)) {
1938                         inset_hit->localDispatch(
1939                                 FuncRequest(bv(), LFUN_INSET_EDIT, x, y - (y2 - y1), mouse_button::none));
1940                 }
1941         }
1942 #else
1943         setCursorFromCoordinates(bv(), cursor.x_fix(),
1944                                  cursor.y() - cursorRow()->baseline() - 1);
1945 #endif
1946 }
1947
1948
1949 void LyXText::cursorDown(bool selecting)
1950 {
1951 #if 1
1952         int x = cursor.x_fix();
1953         int y = cursor.y() - cursorRow()->baseline() + cursorRow()->height() + 1;
1954         setCursorFromCoordinates(x, y);
1955         if (!selecting && cursorRow() == cursorIRow()) {
1956                 int topy = top_y();
1957                 int y1 = cursor.iy() - topy;
1958                 int y2 = y1;
1959                 y -= topy;
1960                 InsetOld * inset_hit = checkInsetHit(x, y1);
1961                 if (inset_hit && isHighlyEditableInset(inset_hit)) {
1962                         FuncRequest cmd(bv(), LFUN_INSET_EDIT, x, y - (y2 - y1), mouse_button::none);
1963                         inset_hit->localDispatch(cmd);
1964                 }
1965         }
1966 #else
1967         setCursorFromCoordinates(bv(), cursor.x_fix(),
1968                                  cursor.y() - cursorRow()->baseline()
1969                                  + cursorRow()->height() + 1);
1970 #endif
1971 }
1972
1973
1974 void LyXText::cursorUpParagraph()
1975 {
1976         if (cursor.pos() > 0)
1977                 setCursor(cursor.par(), 0);
1978         else if (cursor.par() != ownerParagraphs().begin())
1979                 setCursor(boost::prior(cursor.par()), 0);
1980 }
1981
1982
1983 void LyXText::cursorDownParagraph()
1984 {
1985         ParagraphList::iterator par = cursor.par();
1986         ParagraphList::iterator next_par = boost::next(par);
1987
1988         if (next_par != ownerParagraphs().end())
1989                 setCursor(next_par, 0);
1990         else
1991                 setCursor(par, par->size());
1992 }
1993
1994
1995 // fix the cursor `cur' after a characters has been deleted at `where'
1996 // position. Called by deleteEmptyParagraphMechanism
1997 void LyXText::fixCursorAfterDelete(LyXCursor & cur,
1998                                    LyXCursor const & where)
1999 {
2000         // if cursor is not in the paragraph where the delete occured,
2001         // do nothing
2002         if (cur.par() != where.par())
2003                 return;
2004
2005         // if cursor position is after the place where the delete occured,
2006         // update it
2007         if (cur.pos() > where.pos())
2008                 cur.pos(cur.pos()-1);
2009
2010         // check also if we don't want to set the cursor on a spot behind the
2011         // pagragraph because we erased the last character.
2012         if (cur.pos() > cur.par()->size())
2013                 cur.pos(cur.par()->size());
2014
2015         // recompute row et al. for this cursor
2016         setCursor(cur, cur.par(), cur.pos(), cur.boundary());
2017 }
2018
2019
2020 bool LyXText::deleteEmptyParagraphMechanism(LyXCursor const & old_cursor)
2021 {
2022         // Would be wrong to delete anything if we have a selection.
2023         if (selection.set())
2024                 return false;
2025
2026         // We allow all kinds of "mumbo-jumbo" when freespacing.
2027         if (old_cursor.par()->layout()->free_spacing
2028             || old_cursor.par()->isFreeSpacing()) {
2029                 return false;
2030         }
2031
2032         /* Ok I'll put some comments here about what is missing.
2033            I have fixed BackSpace (and thus Delete) to not delete
2034            double-spaces automagically. I have also changed Cut,
2035            Copy and Paste to hopefully do some sensible things.
2036            There are still some small problems that can lead to
2037            double spaces stored in the document file or space at
2038            the beginning of paragraphs. This happens if you have
2039            the cursor betwenn to spaces and then save. Or if you
2040            cut and paste and the selection have a space at the
2041            beginning and then save right after the paste. I am
2042            sure none of these are very hard to fix, but I will
2043            put out 1.1.4pre2 with FIX_DOUBLE_SPACE defined so
2044            that I can get some feedback. (Lgb)
2045         */
2046
2047         // If old_cursor.pos() == 0 and old_cursor.pos()(1) == LineSeparator
2048         // delete the LineSeparator.
2049         // MISSING
2050
2051         // If old_cursor.pos() == 1 and old_cursor.pos()(0) == LineSeparator
2052         // delete the LineSeparator.
2053         // MISSING
2054
2055         // If the pos around the old_cursor were spaces, delete one of them.
2056         if (old_cursor.par() != cursor.par()
2057             || old_cursor.pos() != cursor.pos()) {
2058                 // Only if the cursor has really moved
2059
2060                 if (old_cursor.pos() > 0
2061                     && old_cursor.pos() < old_cursor.par()->size()
2062                     && old_cursor.par()->isLineSeparator(old_cursor.pos())
2063                     && old_cursor.par()->isLineSeparator(old_cursor.pos() - 1)) {
2064                         bool erased = old_cursor.par()->erase(old_cursor.pos() - 1);
2065                         redoParagraph(old_cursor.par());
2066
2067                         if (!erased)
2068                                 return false;
2069 #ifdef WITH_WARNINGS
2070 #warning This will not work anymore when we have multiple views of the same buffer
2071 // In this case, we will have to correct also the cursors held by
2072 // other bufferviews. It will probably be easier to do that in a more
2073 // automated way in LyXCursor code. (JMarc 26/09/2001)
2074 #endif
2075                         // correct all cursors held by the LyXText
2076                         fixCursorAfterDelete(cursor, old_cursor);
2077                         fixCursorAfterDelete(selection.cursor, old_cursor);
2078                         fixCursorAfterDelete(selection.start, old_cursor);
2079                         fixCursorAfterDelete(selection.end, old_cursor);
2080                         return false;
2081                 }
2082         }
2083
2084         // don't delete anything if this is the ONLY paragraph!
2085         if (ownerParagraphs().size() == 1)
2086                 return false;
2087
2088         // Do not delete empty paragraphs with keepempty set.
2089         if (old_cursor.par()->allowEmpty())
2090                 return false;
2091
2092         // only do our magic if we changed paragraph
2093         if (old_cursor.par() == cursor.par())
2094                 return false;
2095
2096         // record if we have deleted a paragraph
2097         // we can't possibly have deleted a paragraph before this point
2098         bool deleted = false;
2099
2100         if (old_cursor.par()->empty() ||
2101             (old_cursor.par()->size() == 1 &&
2102              old_cursor.par()->isLineSeparator(0))) {
2103                 // ok, we will delete anything
2104                 LyXCursor tmpcursor;
2105
2106                 deleted = true;
2107
2108                 bool selection_position_was_oldcursor_position = (
2109                         selection.cursor.par()  == old_cursor.par()
2110                         && selection.cursor.pos() == old_cursor.pos());
2111
2112                 if (getRow(old_cursor) != rows().begin()) {
2113                         RowList::iterator prevrow = boost::prior(getRow(old_cursor));
2114                         tmpcursor = cursor;
2115                         cursor = old_cursor; // that undo can restore the right cursor position
2116                         #warning FIXME. --end() iterator is usable here
2117                         ParagraphList::iterator endpit = boost::next(old_cursor.par());
2118                         while (endpit != ownerParagraphs().end() &&
2119                                endpit->getDepth()) {
2120                                 ++endpit;
2121                         }
2122
2123                         recordUndo(bv(), Undo::DELETE, old_cursor.par(),
2124                                 boost::prior(endpit));
2125                         cursor = tmpcursor;
2126
2127                         // delete old row
2128                         removeRow(getRow(old_cursor));
2129                         // delete old par
2130                         ownerParagraphs().erase(old_cursor.par());
2131
2132                         /* Breakagain the next par. Needed because of
2133                          * the parindent that can occur or dissappear.
2134                          * The next row can change its height, if
2135                          * there is another layout before */
2136                         RowList::iterator tmprit = boost::next(prevrow);
2137                         if (tmprit != rows().end()) {
2138                                 breakAgain(tmprit);
2139                                 updateCounters();
2140                         }
2141                         setHeightOfRow(prevrow);
2142                 } else {
2143                         RowList::iterator nextrow = boost::next(getRow(old_cursor));
2144
2145                         tmpcursor = cursor;
2146                         cursor = old_cursor; // that undo can restore the right cursor position
2147 #warning FIXME. --end() iterator is usable here
2148                         ParagraphList::iterator endpit = boost::next(old_cursor.par());
2149                         while (endpit != ownerParagraphs().end() &&
2150                                endpit->getDepth()) {
2151                                 ++endpit;
2152                         }
2153
2154                         recordUndo(bv(), Undo::DELETE, old_cursor.par(), boost::prior(endpit));
2155                         cursor = tmpcursor;
2156
2157                         // delete old row
2158                         removeRow(getRow(old_cursor));
2159                         // delete old par
2160                         ownerParagraphs().erase(old_cursor.par());
2161
2162                         /* Breakagain the next par. Needed because of
2163                            the parindent that can occur or dissappear.
2164                            The next row can change its height, if
2165                            there is another layout before */
2166                         if (nextrow != rows().end()) {
2167                                 breakAgain(nextrow);
2168                                 updateCounters();
2169                         }
2170                 }
2171
2172                 // correct cursor y
2173                 setCursorIntern(cursor.par(), cursor.pos());
2174
2175                 if (selection_position_was_oldcursor_position) {
2176                         // correct selection
2177                         selection.cursor = cursor;
2178                 }
2179         }
2180         if (!deleted) {
2181                 if (old_cursor.par()->stripLeadingSpaces()) {
2182                         redoParagraph(old_cursor.par());
2183                         // correct cursor y
2184                         setCursorIntern(cursor.par(), cursor.pos());
2185                         selection.cursor = cursor;
2186                 }
2187         }
2188         return deleted;
2189 }
2190
2191
2192 ParagraphList & LyXText::ownerParagraphs() const
2193 {
2194         if (inset_owner) {
2195                 return inset_owner->paragraphs;
2196         }
2197         return bv_owner->buffer()->paragraphs;
2198 }
2199
2200
2201 bool LyXText::isInInset() const
2202 {
2203         // Sub-level has non-null bv owner and
2204         // non-null inset owner.
2205         return inset_owner != 0 && bv_owner != 0;
2206 }
2207
2208
2209 int defaultRowHeight()
2210 {
2211         LyXFont const font(LyXFont::ALL_SANE);
2212         return int(font_metrics::maxAscent(font)
2213                  + font_metrics::maxDescent(font) * 1.5);
2214 }