src/BufferView_pimpl.C

   1 /**
   2  * \file BufferView_pimpl.C
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author Asger Alstrup
   7  * \author Alfredo Braunstein
   8  * \author Lars Gullik Bjønnes
   9  * \author Jean-Marc Lasgouttes
  10  * \author Angus Leeming
  11  * \author John Levon
  12  * \author André Pönitz
  13  * \author Dekel Tsur
  14  * \author Jürgen Vigna
  15  *
  16  * Full author contact details are available in file CREDITS.
  17  */
  18
  19 #include <config.h>
  20
  21 #include "BufferView_pimpl.h"
  22 #include "buffer.h"
  23 #include "buffer_funcs.h"
  24 #include "bufferlist.h"
  25 #include "bufferparams.h"
  26 #include "coordcache.h"
  27 #include "cursor.h"
  28 #include "CutAndPaste.h"
  29 #include "debug.h"
  30 #include "dispatchresult.h"
  31 #include "factory.h"
  32 #include "FloatList.h"
  33 #include "funcrequest.h"
  34 #include "FuncStatus.h"
  35 #include "gettext.h"
  36 #include "intl.h"
  37 #include "insetiterator.h"
  38 #include "LaTeXFeatures.h"
  39 #include "lyx_cb.h" // added for Dispatch functions
  40 #include "lyx_main.h"
  41 #include "lyxfind.h"
  42 #include "lyxfunc.h"
  43 #include "lyxtext.h"
  44 #include "lyxrc.h"
  45 #include "lastfiles.h"
  46 #include "metricsinfo.h"
  47 #include "paragraph.h"
  48 #include "paragraph_funcs.h"
  49 #include "ParagraphParameters.h"
  50 #include "pariterator.h"
  51 #include "rowpainter.h"
  52 #include "toc.h"
  53 #include "undo.h"
  54 #include "vspace.h"
  55
  56 #include "insets/insetbibtex.h"
  57 #include "insets/insetref.h"
  58 #include "insets/insettext.h"
  59
  60 #include "frontends/Alert.h"
  61 #include "frontends/Dialogs.h"
  62 #include "frontends/FileDialog.h"
  63 #include "frontends/font_metrics.h"
  64 #include "frontends/LyXView.h"
  65 #include "frontends/LyXScreenFactory.h"
  66 #include "frontends/screen.h"
  67 #include "frontends/WorkArea.h"
  68 #include "frontends/WorkAreaFactory.h"
  69
  70 #include "graphics/Previews.h"
  71
  72 #include "support/convert.h"
  73 #include "support/filefilterlist.h"
  74 #include "support/filetools.h"
  75 #include "support/forkedcontr.h"
  76 #include "support/package.h"
  77 #include "support/types.h"
  78
  79 #include <boost/bind.hpp>
  80 #include <boost/current_function.hpp>
  81
  82 #include <functional>
  83 #include <vector>
  84
  85 using lyx::pos_type;
  86
  87 using lyx::support::AddPath;
  88 using lyx::support::bformat;
  89 using lyx::support::FileFilterList;
  90 using lyx::support::FileSearch;
  91 using lyx::support::ForkedcallsController;
  92 using lyx::support::IsDirWriteable;
  93 using lyx::support::MakeDisplayPath;
  94 using lyx::support::MakeAbsPath;
  95 using lyx::support::package;
  96
  97 using std::endl;
  98 using std::istringstream;
  99 using std::make_pair;
 100 using std::min;
 101 using std::max;
 102 using std::string;
 103 using std::mem_fun_ref;
 104 using std::vector;
 105
 106
 107 extern BufferList bufferlist;
 108
 109
 110 namespace {
 111
 112 unsigned int const saved_positions_num = 20;
 113
 114 // All the below connection objects are needed because of a bug in some
 115 // versions of GCC (<=2.96 are on the suspects list.) By having and assigning
 116 // to these connections we avoid a segfault upon startup, and also at exit.
 117 // (Lgb)
 118
 119 boost::signals::connection dispatchcon;
 120 boost::signals::connection timecon;
 121 boost::signals::connection doccon;
 122 boost::signals::connection resizecon;
 123 boost::signals::connection kpresscon;
 124 boost::signals::connection selectioncon;
 125 boost::signals::connection lostcon;
 126
 127
 128 /// Return an inset of this class if it exists at the current cursor position
 129 template <class T>
 130 T * getInsetByCode(LCursor & cur, InsetBase::Code code)
 131 {
 132         T * inset = 0;
 133         DocIterator it = cur;
 134         if (it.nextInset() &&
 135             it.nextInset()->lyxCode() == code) {
 136                 inset = static_cast<T*>(it.nextInset());
 137         }
 138         return inset;
 139 }
 140
 141 } // anon namespace
 142
 143
 144 BufferView::Pimpl::Pimpl(BufferView & bv, LyXView * owner,
 145                          int width, int height)
 146         : bv_(&bv), owner_(owner), buffer_(0), wh_(0), cursor_timeout(400),
 147           using_xterm_cursor(false), cursor_(bv),
 148           anchor_ref_(0), offset_ref_(0)
 149 {
 150         xsel_cache_.set = false;
 151
 152         workarea_.reset(WorkAreaFactory::create(*owner_, width, height));
 153         screen_.reset(LyXScreenFactory::create(workarea()));
 154
 155         // Setup the signals
 156         doccon = workarea().scrollDocView
 157                 .connect(boost::bind(&BufferView::Pimpl::scrollDocView, this, _1));
 158         resizecon = workarea().workAreaResize
 159                 .connect(boost::bind(&BufferView::Pimpl::workAreaResize, this));
 160         dispatchcon = workarea().dispatch
 161                 .connect(boost::bind(&BufferView::Pimpl::workAreaDispatch, this, _1));
 162         kpresscon = workarea().workAreaKeyPress
 163                 .connect(boost::bind(&BufferView::Pimpl::workAreaKeyPress, this, _1, _2));
 164         selectioncon = workarea().selectionRequested
 165                 .connect(boost::bind(&BufferView::Pimpl::selectionRequested, this));
 166         lostcon = workarea().selectionLost
 167                 .connect(boost::bind(&BufferView::Pimpl::selectionLost, this));
 168
 169         timecon = cursor_timeout.timeout
 170                 .connect(boost::bind(&BufferView::Pimpl::cursorToggle, this));
 171         cursor_timeout.start();
 172         saved_positions.resize(saved_positions_num);
 173 }
 174
 175
 176 void BufferView::Pimpl::addError(ErrorItem const & ei)
 177 {
 178         errorlist_.push_back(ei);
 179 }
 180
 181
 182 void BufferView::Pimpl::showReadonly(bool)
 183 {
 184         owner_->updateWindowTitle();
 185         owner_->getDialogs().updateBufferDependent(false);
 186 }
 187
 188
 189 void BufferView::Pimpl::connectBuffer(Buffer & buf)
 190 {
 191         if (errorConnection_.connected())
 192                 disconnectBuffer();
 193
 194         errorConnection_ =
 195                 buf.error.connect(
 196                         boost::bind(&BufferView::Pimpl::addError, this, _1));
 197
 198         messageConnection_ =
 199                 buf.message.connect(
 200                         boost::bind(&LyXView::message, owner_, _1));
 201
 202         busyConnection_ =
 203                 buf.busy.connect(
 204                         boost::bind(&LyXView::busy, owner_, _1));
 205
 206         titleConnection_ =
 207                 buf.updateTitles.connect(
 208                         boost::bind(&LyXView::updateWindowTitle, owner_));
 209
 210         timerConnection_ =
 211                 buf.resetAutosaveTimers.connect(
 212                         boost::bind(&LyXView::resetAutosaveTimer, owner_));
 213
 214         readonlyConnection_ =
 215                 buf.readonly.connect(
 216                         boost::bind(&BufferView::Pimpl::showReadonly, this, _1));
 217
 218         closingConnection_ =
 219                 buf.closing.connect(
 220                         boost::bind(&BufferView::Pimpl::setBuffer, this, (Buffer *)0));
 221 }
 222
 223
 224 void BufferView::Pimpl::disconnectBuffer()
 225 {
 226         errorConnection_.disconnect();
 227         messageConnection_.disconnect();
 228         busyConnection_.disconnect();
 229         titleConnection_.disconnect();
 230         timerConnection_.disconnect();
 231         readonlyConnection_.disconnect();
 232         closingConnection_.disconnect();
 233 }
 234
 235
 236 void BufferView::Pimpl::newFile(string const & filename, string const & tname,
 237         bool isNamed)
 238 {
 239         setBuffer(::newFile(filename, tname, isNamed));
 240 }
 241
 242
 243 bool BufferView::Pimpl::loadLyXFile(string const & filename, bool tolastfiles)
 244 {
 245         // Get absolute path of file and add ".lyx"
 246         // to the filename if necessary
 247         string s = FileSearch(string(), filename, "lyx");
 248
 249         bool const found = !s.empty();
 250
 251         if (!found)
 252                 s = filename;
 253
 254         // File already open?
 255         if (bufferlist.exists(s)) {
 256                 string const file = MakeDisplayPath(s, 20);
 257                 string text = bformat(_("The document %1$s is already "
 258                                         "loaded.\n\nDo you want to revert "
 259                                         "to the saved version?"), file);
 260                 int const ret = Alert::prompt(_("Revert to saved document?"),
 261                         text, 0, 1,  _("&Revert"), _("&Switch to document"));
 262
 263                 if (ret != 0) {
 264                         setBuffer(bufferlist.getBuffer(s));
 265                         return true;
 266                 }
 267                 // FIXME: should be LFUN_REVERT
 268                 if (!bufferlist.close(bufferlist.getBuffer(s), false))
 269                         return false;
 270                 // Fall through to new load. (Asger)
 271         }
 272
 273         Buffer * b = 0;
 274
 275         if (found) {
 276                 b = bufferlist.newBuffer(s);
 277                 connectBuffer(*b);
 278                 if (!::loadLyXFile(b, s)) {
 279                         bufferlist.release(b);
 280                         return false;
 281                 }
 282         } else {
 283                 string text = bformat(_("The document %1$s does not yet "
 284                                         "exist.\n\nDo you want to create "
 285                                         "a new document?"), s);
 286                 int const ret = Alert::prompt(_("Create new document?"),
 287                          text, 0, 1, _("&Create"), _("Cancel"));
 288
 289                 if (ret == 0)
 290                         b = ::newFile(s, string(), true);
 291                 else
 292                         return false;
 293         }
 294
 295         setBuffer(b);
 296         bv_->showErrorList(_("Parse"));
 297
 298         if (tolastfiles)
 299                 LyX::ref().lastfiles().newFile(b->fileName());
 300
 301         return true;
 302 }
 303
 304
 305 WorkArea & BufferView::Pimpl::workarea() const
 306 {
 307         return *workarea_.get();
 308 }
 309
 310
 311 LyXScreen & BufferView::Pimpl::screen() const
 312 {
 313         return *screen_.get();
 314 }
 315
 316
 317 Painter & BufferView::Pimpl::painter() const
 318 {
 319         return workarea().getPainter();
 320 }
 321
 322
 323 void BufferView::Pimpl::setBuffer(Buffer * b)
 324 {
 325         lyxerr[Debug::INFO] << BOOST_CURRENT_FUNCTION
 326                             << "[ b = " << b << "]" << endl;
 327
 328         if (buffer_) {
 329                 disconnectBuffer();
 330                 // Save the actual cursor position and anchor inside the
 331                 // buffer so that it can be restored in case we rechange
 332                 // to this buffer later on.
 333                 buffer_->saveCursor(cursor_.selectionBegin(),
 334                                     cursor_.selectionEnd());
 335         }
 336
 337         // If we are closing current buffer, switch to the first in
 338         // buffer list.
 339         if (!b) {
 340                 lyxerr[Debug::INFO] << BOOST_CURRENT_FUNCTION
 341                                     << " No Buffer!" << endl;
 342                 // We are closing the buffer, use the first buffer as current
 343                 buffer_ = bufferlist.first();
 344                 owner_->getDialogs().hideBufferDependent();
 345         } else {
 346                 // Set current buffer
 347                 buffer_ = b;
 348         }
 349
 350         // Reset old cursor
 351         cursor_ = LCursor(*bv_);
 352         anchor_ref_ = 0;
 353         offset_ref_ = 0;
 354
 355
 356         // If we're quitting lyx, don't bother updating stuff
 357         if (quitting)
 358                 return;
 359
 360         if (buffer_) {
 361                 lyxerr[Debug::INFO] << BOOST_CURRENT_FUNCTION
 362                                     << "Buffer addr: " << buffer_ << endl;
 363                 connectBuffer(*buffer_);
 364                 cursor_.push(buffer_->inset());
 365                 cursor_.resetAnchor();
 366                 buffer_->text().init(bv_);
 367                 buffer_->text().setCurrentFont(cursor_);
 368                 if (buffer_->getCursor().size() > 0 &&
 369                     buffer_->getAnchor().size() > 0)
 370                 {
 371                         cursor_.setCursor(buffer_->getAnchor().asDocIterator(&(buffer_->inset())));
 372                         cursor_.resetAnchor();
 373                         cursor_.setCursor(buffer_->getCursor().asDocIterator(&(buffer_->inset())));
 374                         cursor_.setSelection();
 375                 }
 376
 377                 // Buffer-dependent dialogs should be updated or
 378                 // hidden. This should go here because some dialogs (eg ToC)
 379                 // require bv_->text.
 380                 owner_->getDialogs().updateBufferDependent(true);
 381         }
 382
 383         update();
 384         updateScrollbar();
 385         owner_->updateMenubar();
 386         owner_->updateToolbars();
 387         owner_->updateLayoutChoice();
 388         owner_->updateWindowTitle();
 389
 390         // This is done after the layout combox has been populated
 391         if (buffer_) {
 392                 size_t i = cursor_.depth() - 1;
 393                 // we know we'll eventually find a paragraph
 394                 while (true) {
 395                         CursorSlice const & slice = cursor_[i];
 396                         if (!slice.inset().inMathed()) {
 397                                 LyXLayout_ptr const layout = slice.paragraph().layout();
 398                                 owner_->setLayout(layout->name());
 399                                 break;
 400                         }
 401                         BOOST_ASSERT(i>0);
 402                         --i;
 403                 }
 404         }
 405
 406         if (buffer_ && lyx::graphics::Previews::status() != LyXRC::PREVIEW_OFF)
 407                 lyx::graphics::Previews::get().generateBufferPreviews(*buffer_);
 408 }
 409
 410
 411 void BufferView::Pimpl::resizeCurrentBuffer()
 412 {
 413         lyxerr[Debug::DEBUG] << BOOST_CURRENT_FUNCTION << endl;
 414         owner_->busy(true);
 415         owner_->message(_("Formatting document..."));
 416
 417         LyXText * text = bv_->text();
 418         if (!text)
 419                 return;
 420
 421         text->init(bv_);
 422         update();
 423
 424         switchKeyMap();
 425         owner_->busy(false);
 426
 427         // Reset the "Formatting..." message
 428         owner_->clearMessage();
 429
 430         updateScrollbar();
 431 }
 432
 433
 434 void BufferView::Pimpl::updateScrollbar()
 435 {
 436         if (!bv_->text()) {
 437                 lyxerr[Debug::DEBUG] << BOOST_CURRENT_FUNCTION
 438                                      << " no text in updateScrollbar" << endl;
 439                 workarea().setScrollbarParams(0, 0, 0);
 440                 return;
 441         }
 442
 443         LyXText & t = *bv_->text();
 444         int const parsize = int(t.paragraphs().size() - 1);
 445         if (anchor_ref_ >  parsize)  {
 446                 anchor_ref_ = parsize;
 447                 offset_ref_ = 0;
 448         }
 449
 450         lyxerr[Debug::GUI]
 451                 << BOOST_CURRENT_FUNCTION
 452                 << " Updating scrollbar: height: " << t.paragraphs().size()
 453                 << " curr par: " << cursor_.bottom().pit()
 454                 << " default height " << defaultRowHeight() << endl;
 455
 456         // It would be better to fix the scrollbar to understand
 457         // values in [0..1] and divide everything by wh
 458
 459         // estimated average paragraph height:
 460         if (wh_ == 0)
 461                 wh_ = workarea().workHeight() / 4;
 462         int h = t.getPar(anchor_ref_).height();
 463
 464         // Normalize anchor/offset (MV):
 465         while (offset_ref_ > h && anchor_ref_ < parsize) {
 466                 anchor_ref_++;
 467                 offset_ref_ -= h;
 468                 h = t.getPar(anchor_ref_).height();
 469         }
 470         // Look at paragraph heights on-screen
 471         int sumh = 0;
 472         int nh = 0;
 473         for (lyx::pit_type pit = anchor_ref_; pit <= parsize; ++pit) {
 474                 if (sumh > workarea().workHeight())
 475                         break;
 476                 int const h2 = t.getPar(pit).height();
 477                 sumh += h2;
 478                 nh++;
 479         }
 480         int const hav = sumh / nh;
 481         // More realistic average paragraph height
 482         if (hav > wh_)
 483                 wh_ = hav;
 484
 485         workarea().setScrollbarParams((parsize + 1) * wh_,
 486                 anchor_ref_ * wh_ + int(offset_ref_ * wh_ / float(h)),
 487                 int(wh_ * defaultRowHeight() / float(h)));
 488 }
 489
 490
 491 void BufferView::Pimpl::scrollDocView(int value)
 492 {
 493         lyxerr[Debug::GUI] << BOOST_CURRENT_FUNCTION
 494                            << "[ value = " << value << "]" << endl;
 495
 496         if (!buffer_)
 497                 return;
 498
 499         screen().hideCursor();
 500
 501         LyXText & t = *bv_->text();
 502
 503         float const bar = value / float(wh_ * t.paragraphs().size());
 504
 505         anchor_ref_ = int(bar * t.paragraphs().size());
 506         if (anchor_ref_ >  int(t.paragraphs().size()) - 1)
 507                 anchor_ref_ = int(t.paragraphs().size()) - 1;
 508         t.redoParagraph(anchor_ref_);
 509         int const h = t.getPar(anchor_ref_).height();
 510         offset_ref_ = int((bar * t.paragraphs().size() - anchor_ref_) * h);
 511         update();
 512
 513         if (!lyxrc.cursor_follows_scrollbar)
 514                 return;
 515
 516         int const height = 2 * defaultRowHeight();
 517         int const first = height;
 518         int const last = workarea().workHeight() - height;
 519         LCursor & cur = cursor_;
 520
 521         bv_funcs::CurStatus st = bv_funcs::status(bv_, cur);
 522
 523         switch (st) {
 524         case bv_funcs::CUR_ABOVE:
 525                 t.setCursorFromCoordinates(cur, 0, first);
 526                 cur.clearSelection();
 527                 break;
 528         case bv_funcs::CUR_BELOW:
 529                 t.setCursorFromCoordinates(cur, 0, last);
 530                 cur.clearSelection();
 531                 break;
 532         case bv_funcs::CUR_INSIDE:
 533                 int const y = bv_funcs::getPos(cur, cur.boundary()).y_;
 534                 int const newy = min(last, max(y, first));
 535                 if (y != newy) {
 536                         cur.reset(buffer_->inset());
 537                         t.setCursorFromCoordinates(cur, 0, newy);
 538                 }
 539         }
 540         owner_->updateLayoutChoice();
 541 }
 542
 543
 544 void BufferView::Pimpl::scroll(int /*lines*/)
 545 {
 546 //      if (!buffer_)
 547 //              return;
 548 //
 549 //      LyXText const * t = bv_->text();
 550 //      int const line_height = defaultRowHeight();
 551 //
 552 //      // The new absolute coordinate
 553 //      int new_top_y = top_y() + lines * line_height;
 554 //
 555 //      // Restrict to a valid value
 556 //      new_top_y = std::min(t->height() - 4 * line_height, new_top_y);
 557 //      new_top_y = std::max(0, new_top_y);
 558 //
 559 //      scrollDocView(new_top_y);
 560 //
 561 //      // Update the scrollbar.
 562 //      workarea().setScrollbarParams(t->height(), top_y(), defaultRowHeight());
 563 }
 564
 565
 566 void BufferView::Pimpl::workAreaKeyPress(LyXKeySymPtr key,
 567                                          key_modifier::state state)
 568 {
 569         owner_->getLyXFunc().processKeySym(key, state);
 570
 571         /* This is perhaps a bit of a hack. When we move
 572          * around, or type, it's nice to be able to see
 573          * the cursor immediately after the keypress. So
 574          * we reset the toggle timeout and force the visibility
 575          * of the cursor. Note we cannot do this inside
 576          * dispatch() itself, because that's called recursively.
 577          */
 578         if (available())
 579                 screen().showCursor(*bv_);
 580 }
 581
 582
 583 void BufferView::Pimpl::selectionRequested()
 584 {
 585         static string sel;
 586
 587         if (!available())
 588                 return;
 589
 590         LCursor & cur = cursor_;
 591
 592         if (!cur.selection()) {
 593                 xsel_cache_.set = false;
 594                 return;
 595         }
 596
 597         if (!xsel_cache_.set ||
 598             cur.top() != xsel_cache_.cursor ||
 599             cur.anchor_.top() != xsel_cache_.anchor)
 600         {
 601                 xsel_cache_.cursor = cur.top();
 602                 xsel_cache_.anchor = cur.anchor_.top();
 603                 xsel_cache_.set = cur.selection();
 604                 sel = cur.selectionAsString(false);
 605                 if (!sel.empty())
 606                         workarea().putClipboard(sel);
 607         }
 608 }
 609
 610
 611 void BufferView::Pimpl::selectionLost()
 612 {
 613         if (available()) {
 614                 screen().hideCursor();
 615                 cursor_.clearSelection();
 616                 xsel_cache_.set = false;
 617         }
 618 }
 619
 620
 621 void BufferView::Pimpl::workAreaResize()
 622 {
 623         static int work_area_width;
 624         static int work_area_height;
 625
 626         bool const widthChange = workarea().workWidth() != work_area_width;
 627         bool const heightChange = workarea().workHeight() != work_area_height;
 628
 629         // Update from work area
 630         work_area_width = workarea().workWidth();
 631         work_area_height = workarea().workHeight();
 632
 633         if (buffer_ && widthChange) {
 634                 // The visible LyXView need a resize
 635                 resizeCurrentBuffer();
 636         }
 637
 638         if (widthChange || heightChange)
 639                 update();
 640
 641         // Always make sure that the scrollbar is sane.
 642         updateScrollbar();
 643         owner_->updateLayoutChoice();
 644 }
 645
 646
 647 bool BufferView::Pimpl::fitCursor()
 648 {
 649         if (bv_funcs::status(bv_, cursor_) == bv_funcs::CUR_INSIDE) {
 650                 LyXFont const font = cursor_.getFont();
 651                 int const asc = font_metrics::maxAscent(font);
 652                 int const des = font_metrics::maxDescent(font);
 653                 Point const p = bv_funcs::getPos(cursor_, cursor_.boundary());
 654                 if (p.y_ - asc >= 0 && p.y_ + des < workarea().workHeight())
 655                         return false;
 656         }
 657         center();
 658         return true;
 659 }
 660
 661
 662 bool BufferView::Pimpl::multiParSel()
 663 {
 664         if (!cursor_.selection())
 665                 return false;
 666         bool ret = multiparsel_cache_;
 667         multiparsel_cache_ = cursor_.selBegin().pit() != cursor_.selEnd().pit();
 668         // Either this, or previous selection spans paragraphs
 669         return ret || multiparsel_cache_;
 670 }
 671
 672
 673 void BufferView::Pimpl::update(Update::flags flags)
 674 {
 675         lyxerr[Debug::DEBUG]
 676                 << BOOST_CURRENT_FUNCTION
 677                 << "[fitcursor = " << (flags & Update::FitCursor)
 678                 << ", forceupdate = " << (flags & Update::Force)
 679                 << ", singlepar = " << (flags & Update::SinglePar)
 680                 << "]  buffer: " << buffer_ << endl;
 681
 682         // Check needed to survive LyX startup
 683         if (buffer_) {
 684                 // Update macro store
 685                 buffer_->buildMacros();
 686
 687                 CoordCache backup;
 688                 std::swap(theCoords, backup);
 689
 690                 // This, together with doneUpdating(), verifies (using
 691                 // asserts) that screen redraw is not called from
 692                 // within itself.
 693                 theCoords.startUpdating();
 694
 695                 // First drawing step
 696                 ViewMetricsInfo vi = metrics(flags & Update::SinglePar);
 697                 bool forceupdate(flags & (Update::Force | Update::SinglePar));
 698
 699                 if ((flags & Update::FitCursor) && fitCursor()) {
 700                         forceupdate = true;
 701                         vi = metrics();
 702                 }
 703                 if ((flags & Update::MultiParSel) && multiParSel()) {
 704                         forceupdate = true;
 705                         vi = metrics();
 706                 }
 707                 if (forceupdate) {
 708                         // Second drawing step
 709                         screen().redraw(*bv_, vi);
 710                 } else {
 711                         // Abort updating of the coord
 712                         // cache - just restore the old one
 713                         std::swap(theCoords, backup);
 714                 }
 715         } else
 716                 screen().greyOut();
 717
 718         // And the scrollbar
 719         updateScrollbar();
 720         owner_->view_state_changed();
 721 }
 722
 723
 724 // Callback for cursor timer
 725 void BufferView::Pimpl::cursorToggle()
 726 {
 727         if (buffer_) {
 728                 screen().toggleCursor(*bv_);
 729
 730                 // Use this opportunity to deal with any child processes that
 731                 // have finished but are waiting to communicate this fact
 732                 // to the rest of LyX.
 733                 ForkedcallsController & fcc = ForkedcallsController::get();
 734                 fcc.handleCompletedProcesses();
 735         }
 736
 737         cursor_timeout.restart();
 738 }
 739
 740
 741 bool BufferView::Pimpl::available() const
 742 {
 743         return buffer_ && bv_->text();
 744 }
 745
 746
 747 Change const BufferView::Pimpl::getCurrentChange()
 748 {
 749         if (!buffer_->params().tracking_changes)
 750                 return Change(Change::UNCHANGED);
 751
 752         LyXText * text = bv_->getLyXText();
 753         LCursor & cur = cursor_;
 754
 755         if (!cur.selection())
 756                 return Change(Change::UNCHANGED);
 757
 758         return text->getPar(cur.selBegin().pit()).
 759                         lookupChangeFull(cur.selBegin().pos());
 760 }
 761
 762
 763 void BufferView::Pimpl::savePosition(unsigned int i)
 764 {
 765         if (i >= saved_positions_num)
 766                 return;
 767         BOOST_ASSERT(cursor_.inTexted());
 768         saved_positions[i] = Position(buffer_->fileName(),
 769                                       cursor_.paragraph().id(),
 770                                       cursor_.pos());
 771         if (i > 0)
 772                 owner_->message(bformat(_("Saved bookmark %1$d"), i));
 773 }
 774
 775
 776 void BufferView::Pimpl::restorePosition(unsigned int i)
 777 {
 778         if (i >= saved_positions_num)
 779                 return;
 780
 781         string const fname = saved_positions[i].filename;
 782
 783         cursor_.clearSelection();
 784
 785         if (fname != buffer_->fileName()) {
 786                 Buffer * b = 0;
 787                 if (bufferlist.exists(fname))
 788                         b = bufferlist.getBuffer(fname);
 789                 else {
 790                         b = bufferlist.newBuffer(fname);
 791                         // Don't ask, just load it
 792                         ::loadLyXFile(b, fname);
 793                 }
 794                 if (b)
 795                         setBuffer(b);
 796         }
 797
 798         ParIterator par = buffer_->getParFromID(saved_positions[i].par_id);
 799         if (par == buffer_->par_iterator_end())
 800                 return;
 801
 802         bv_->setCursor(makeDocIterator(par, min(par->size(), saved_positions[i].par_pos)));
 803
 804         if (i > 0)
 805                 owner_->message(bformat(_("Moved to bookmark %1$d"), i));
 806 }
 807
 808
 809 bool BufferView::Pimpl::isSavedPosition(unsigned int i)
 810 {
 811         return i < saved_positions_num && !saved_positions[i].filename.empty();
 812 }
 813
 814
 815 void BufferView::Pimpl::switchKeyMap()
 816 {
 817         if (!lyxrc.rtl_support)
 818                 return;
 819
 820         Intl & intl = owner_->getIntl();
 821         if (bv_->getLyXText()->real_current_font.isRightToLeft()) {
 822                 if (intl.keymap == Intl::PRIMARY)
 823                         intl.KeyMapSec();
 824         } else {
 825                 if (intl.keymap == Intl::SECONDARY)
 826                         intl.KeyMapPrim();
 827         }
 828 }
 829
 830
 831 void BufferView::Pimpl::center()
 832 {
 833         CursorSlice & bot = cursor_.bottom();
 834         lyx::pit_type const pit = bot.pit();
 835         bot.text()->redoParagraph(pit);
 836         Paragraph const & par = bot.text()->paragraphs()[pit];
 837         anchor_ref_ = pit;
 838         offset_ref_ = bv_funcs::coordOffset(cursor_, cursor_.boundary()).y_
 839                 + par.ascent() - workarea().workHeight() / 2;
 840 }
 841
 842
 843 void BufferView::Pimpl::stuffClipboard(string const & content) const
 844 {
 845         workarea().putClipboard(content);
 846 }
 847
 848
 849 void BufferView::Pimpl::MenuInsertLyXFile(string const & filenm)
 850 {
 851         BOOST_ASSERT(cursor_.inTexted());
 852         string filename = filenm;
 853
 854         if (filename.empty()) {
 855                 // Launch a file browser
 856                 string initpath = lyxrc.document_path;
 857
 858                 if (available()) {
 859                         string const trypath = owner_->buffer()->filePath();
 860                         // If directory is writeable, use this as default.
 861                         if (IsDirWriteable(trypath))
 862                                 initpath = trypath;
 863                 }
 864
 865                 FileDialog fileDlg(_("Select LyX document to insert"),
 866                         LFUN_FILE_INSERT,
 867                         make_pair(string(_("Documents|#o#O")),
 868                                   string(lyxrc.document_path)),
 869                         make_pair(string(_("Examples|#E#e")),
 870                                   string(AddPath(package().system_support(), "examples"))));
 871
 872                 FileDialog::Result result =
 873                         fileDlg.open(initpath,
 874                                      FileFilterList(_("LyX Documents (*.lyx)")),
 875                                      string());
 876
 877                 if (result.first == FileDialog::Later)
 878                         return;
 879
 880                 filename = result.second;
 881
 882                 // check selected filename
 883                 if (filename.empty()) {
 884                         owner_->message(_("Canceled."));
 885                         return;
 886                 }
 887         }
 888
 889         // Get absolute path of file and add ".lyx"
 890         // to the filename if necessary
 891         filename = FileSearch(string(), filename, "lyx");
 892
 893         string const disp_fn = MakeDisplayPath(filename);
 894         owner_->message(bformat(_("Inserting document %1$s..."), disp_fn));
 895
 896         string res;
 897         Buffer buf("", false);
 898         buf.error.connect(boost::bind(&BufferView::Pimpl::addError, this, _1));
 899         if (::loadLyXFile(&buf, MakeAbsPath(filename))) {
 900                 lyx::cap::pasteParagraphList(cursor_, buf.paragraphs(),
 901                                              buf.params().textclass);
 902                 res = _("Document %1$s inserted.");
 903         } else
 904                 res = _("Could not insert document %1$s");
 905
 906         owner_->message(bformat(res, disp_fn));
 907         bv_->showErrorList(_("Document insertion"));
 908         resizeCurrentBuffer();
 909 }
 910
 911
 912 void BufferView::Pimpl::trackChanges()
 913 {
 914         bool const tracking = buffer_->params().tracking_changes;
 915
 916         if (!tracking) {
 917                 for_each(buffer_->par_iterator_begin(),
 918                          buffer_->par_iterator_end(),
 919                          bind(&Paragraph::trackChanges, _1, Change::UNCHANGED));
 920                 buffer_->params().tracking_changes = true;
 921
 922                 // We cannot allow undos beyond the freeze point
 923                 buffer_->undostack().clear();
 924         } else {
 925                 cursor_.setCursor(doc_iterator_begin(buffer_->inset()));
 926                 if (lyx::find::findNextChange(bv_)) {
 927                         owner_->getDialogs().show("changes");
 928                         return;
 929                 }
 930
 931                 for_each(buffer_->par_iterator_begin(),
 932                          buffer_->par_iterator_end(),
 933                          mem_fun_ref(&Paragraph::untrackChanges));
 934
 935                 buffer_->params().tracking_changes = false;
 936         }
 937
 938         buffer_->redostack().clear();
 939 }
 940
 941
 942 bool BufferView::Pimpl::workAreaDispatch(FuncRequest const & cmd0)
 943 {
 944         //lyxerr << BOOST_CURRENT_FUNCTION << "[ cmd0 " << cmd0 << "]" << endl;
 945
 946         // This is only called for mouse related events including
 947         // LFUN_FILE_OPEN generated by drag-and-drop.
 948         FuncRequest cmd = cmd0;
 949
 950         // Handle drag&drop
 951         if (cmd.action == LFUN_FILE_OPEN) {
 952                 owner_->dispatch(cmd);
 953                 return true;
 954         }
 955
 956         if (!buffer_)
 957                 return false;
 958
 959         LCursor cur(*bv_);
 960         cur.push(buffer_->inset());
 961         cur.selection() = cursor_.selection();
 962
 963         // Doesn't go through lyxfunc, so we need to update
 964         // the layout choice etc. ourselves
 965
 966         // E.g. Qt mouse press when no buffer
 967         if (!available())
 968                 return false;
 969
 970         screen().hideCursor();
 971
 972         // Either the inset under the cursor or the
 973         // surrounding LyXText will handle this event.
 974
 975         // Build temporary cursor.
 976         cmd.y = min(max(cmd.y,-1), workarea().workHeight());
 977         InsetBase * inset = bv_->text()->editXY(cur, cmd.x, cmd.y);
 978         //lyxerr << BOOST_CURRENT_FUNCTION
 979         //       << " * hit inset at tip: " << inset << endl;
 980         //lyxerr << BOOST_CURRENT_FUNCTION
 981         //       << " * created temp cursor:" << cur << endl;
 982
 983         // Put anchor at the same position.
 984         cur.resetAnchor();
 985
 986         // Try to dispatch to an non-editable inset near this position
 987         // via the temp cursor. If the inset wishes to change the real
 988         // cursor it has to do so explicitly by using
 989         //  cur.bv().cursor() = cur;  (or similar)
 990         if (inset)
 991                 inset->dispatch(cur, cmd);
 992
 993         // Now dispatch to the temporary cursor. If the real cursor should
 994         // be modified, the inset's dispatch has to do so explicitly.
 995         if (!cur.result().dispatched())
 996                 cur.dispatch(cmd);
 997
 998         if (cur.result().dispatched()) {
 999                 // Redraw if requested or necessary.
1000                 if (cur.result().update())
1001                         update(Update::FitCursor | Update::Force);
1002                 else
1003                         update(Update::FitCursor | Update::MultiParSel);
1004         }
1005
1006         // See workAreaKeyPress
1007         cursor_timeout.restart();
1008         screen().showCursor(*bv_);
1009
1010         // Skip these when selecting
1011         if (cmd.action != LFUN_MOUSE_MOTION) {
1012                 owner_->updateLayoutChoice();
1013                 owner_->updateToolbars();
1014         }
1015
1016         // Slight hack: this is only called currently when we
1017         // clicked somewhere, so we force through the display
1018         // of the new status here.
1019         owner_->clearMessage();
1020         return true;
1021 }
1022
1023
1024 FuncStatus BufferView::Pimpl::getStatus(FuncRequest const & cmd)
1025 {
1026         FuncStatus flag;
1027
1028         switch (cmd.action) {
1029
1030         case LFUN_UNDO:
1031                 flag.enabled(!buffer_->undostack().empty());
1032                 break;
1033         case LFUN_REDO:
1034                 flag.enabled(!buffer_->redostack().empty());
1035                 break;
1036         case LFUN_FILE_INSERT:
1037         case LFUN_FILE_INSERT_ASCII_PARA:
1038         case LFUN_FILE_INSERT_ASCII:
1039                 // FIXME: Actually, these LFUNS should be moved to LyXText
1040                 flag.enabled(cursor_.inTexted());
1041                 break;
1042         case LFUN_FONT_STATE:
1043         case LFUN_INSERT_LABEL:
1044         case LFUN_BOOKMARK_SAVE:
1045         case LFUN_GOTO_PARAGRAPH:
1046         case LFUN_OUTLINE:
1047         case LFUN_GOTOERROR:
1048         case LFUN_GOTONOTE:
1049         case LFUN_REFERENCE_GOTO:
1050         case LFUN_WORD_FIND:
1051         case LFUN_WORD_REPLACE:
1052         case LFUN_MARK_OFF:
1053         case LFUN_MARK_ON:
1054         case LFUN_SETMARK:
1055         case LFUN_CENTER:
1056         case LFUN_BIBDB_ADD:
1057         case LFUN_BIBDB_DEL:
1058         case LFUN_WORDS_COUNT:
1059                 flag.enabled(true);
1060                 break;
1061
1062         case LFUN_LABEL_GOTO: {
1063                 flag.enabled(!cmd.argument.empty()
1064                     || getInsetByCode<InsetRef>(cursor_, InsetBase::REF_CODE));
1065                 break;
1066         }
1067
1068         case LFUN_BOOKMARK_GOTO:
1069                 flag.enabled(isSavedPosition(convert<unsigned int>(cmd.argument)));
1070                 break;
1071         case LFUN_TRACK_CHANGES:
1072                 flag.enabled(true);
1073                 flag.setOnOff(buffer_->params().tracking_changes);
1074                 break;
1075
1076         case LFUN_OUTPUT_CHANGES: {
1077                 OutputParams runparams;
1078                 LaTeXFeatures features(*buffer_, buffer_->params(), runparams);
1079                 flag.enabled(buffer_ && buffer_->params().tracking_changes
1080                         && features.isAvailable("dvipost"));
1081                 flag.setOnOff(buffer_->params().output_changes);
1082                 break;
1083         }
1084
1085         case LFUN_MERGE_CHANGES:
1086         case LFUN_ACCEPT_CHANGE: // what about these two
1087         case LFUN_REJECT_CHANGE: // what about these two
1088         case LFUN_ACCEPT_ALL_CHANGES:
1089         case LFUN_REJECT_ALL_CHANGES:
1090                 flag.enabled(buffer_ && buffer_->params().tracking_changes);
1091                 break;
1092         default:
1093                 flag.enabled(false);
1094         }
1095
1096         return flag;
1097 }
1098
1099
1100
1101 bool BufferView::Pimpl::dispatch(FuncRequest const & cmd)
1102 {
1103         //lyxerr << BOOST_CURRENT_FUNCTION
1104         //       << [ cmd = " << cmd << "]" << endl;
1105
1106         // Make sure that the cached BufferView is correct.
1107         lyxerr[Debug::ACTION] << BOOST_CURRENT_FUNCTION
1108                 << " action[" << cmd.action << ']'
1109                 << " arg[" << cmd.argument << ']'
1110                 << " x[" << cmd.x << ']'
1111                 << " y[" << cmd.y << ']'
1112                 << " button[" << cmd.button() << ']'
1113                 << endl;
1114
1115         LCursor & cur = cursor_;
1116
1117         switch (cmd.action) {
1118
1119         case LFUN_UNDO:
1120                 if (available()) {
1121                         cur.message(_("Undo"));
1122                         cur.clearSelection();
1123                         if (!textUndo(*bv_))
1124                                 cur.message(_("No further undo information"));
1125                         update();
1126                         switchKeyMap();
1127                 }
1128                 break;
1129
1130         case LFUN_REDO:
1131                 if (available()) {
1132                         cur.message(_("Redo"));
1133                         cur.clearSelection();
1134                         if (!textRedo(*bv_))
1135                                 cur.message(_("No further redo information"));
1136                         update();
1137                         switchKeyMap();
1138                 }
1139                 break;
1140
1141         case LFUN_FILE_INSERT:
1142                 MenuInsertLyXFile(cmd.argument);
1143                 break;
1144
1145         case LFUN_FILE_INSERT_ASCII_PARA:
1146                 InsertAsciiFile(bv_, cmd.argument, true);
1147                 break;
1148
1149         case LFUN_FILE_INSERT_ASCII:
1150                 InsertAsciiFile(bv_, cmd.argument, false);
1151                 break;
1152
1153         case LFUN_FONT_STATE:
1154                 cur.message(cur.currentState());
1155                 break;
1156
1157         case LFUN_BOOKMARK_SAVE:
1158                 savePosition(convert<unsigned int>(cmd.argument));
1159                 break;
1160
1161         case LFUN_BOOKMARK_GOTO:
1162                 restorePosition(convert<unsigned int>(cmd.argument));
1163                 break;
1164
1165         case LFUN_LABEL_GOTO: {
1166                 string label = cmd.argument;
1167                 if (label.empty()) {
1168                         InsetRef * inset =
1169                                 getInsetByCode<InsetRef>(cursor_,
1170                                                          InsetBase::REF_CODE);
1171                         if (inset) {
1172                                 label = inset->getContents();
1173                                 savePosition(0);
1174                         }
1175                 }
1176
1177                 if (!label.empty())
1178                         bv_->gotoLabel(label);
1179                 break;
1180         }
1181
1182         case LFUN_GOTO_PARAGRAPH: {
1183                 int const id = convert<int>(cmd.argument);
1184                 ParIterator par = buffer_->getParFromID(id);
1185                 if (par == buffer_->par_iterator_end()) {
1186                         lyxerr[Debug::INFO] << "No matching paragraph found! ["
1187                                             << id << ']' << endl;
1188                         break;
1189                 } else {
1190                         lyxerr[Debug::INFO] << "Paragraph " << par->id()
1191                                             << " found." << endl;
1192                 }
1193
1194                 // Set the cursor
1195                 bv_->setCursor(makeDocIterator(par, 0));
1196
1197                 update();
1198                 switchKeyMap();
1199                 break;
1200         }
1201
1202         case LFUN_OUTLINE: {
1203                 lyx::toc::OutlineOp const op =
1204                     static_cast<lyx::toc::OutlineOp>(convert<int>(cmd.argument));
1205                 lyx::toc::Outline(op, buffer_, cursor_.pit());
1206                 bv_->text()->setCursor(cursor_, cursor_.pit(), 0);
1207                 buffer_->markDirty();
1208                 updateCounters(*buffer_);
1209                 update();
1210         }
1211
1212         case LFUN_GOTOERROR:
1213                 bv_funcs::gotoInset(bv_, InsetBase::ERROR_CODE, false);
1214                 break;
1215
1216         case LFUN_GOTONOTE:
1217                 bv_funcs::gotoInset(bv_, InsetBase::NOTE_CODE, false);
1218                 break;
1219
1220         case LFUN_REFERENCE_GOTO: {
1221                 vector<InsetBase_code> tmp;
1222                 tmp.push_back(InsetBase::LABEL_CODE);
1223                 tmp.push_back(InsetBase::REF_CODE);
1224                 bv_funcs::gotoInset(bv_, tmp, true);
1225                 break;
1226         }
1227
1228         case LFUN_TRACK_CHANGES:
1229                 trackChanges();
1230                 break;
1231
1232         case LFUN_OUTPUT_CHANGES: {
1233                 bool const state = buffer_->params().output_changes;
1234                 buffer_->params().output_changes = !state;
1235                 break;
1236         }
1237
1238         case LFUN_MERGE_CHANGES:
1239                 if (lyx::find::findNextChange(bv_))
1240                         owner_->getDialogs().show("changes");
1241                 break;
1242
1243         case LFUN_ACCEPT_ALL_CHANGES: {
1244                 cursor_.reset(buffer_->inset());
1245 #ifdef WITH_WARNINGS
1246 #warning FIXME changes
1247 #endif
1248                 while (lyx::find::findNextChange(bv_))
1249                         bv_->getLyXText()->acceptChange(cursor_);
1250                 update();
1251                 break;
1252         }
1253
1254         case LFUN_REJECT_ALL_CHANGES: {
1255                 cursor_.reset(buffer_->inset());
1256 #ifdef WITH_WARNINGS
1257 #warning FIXME changes
1258 #endif
1259                 while (lyx::find::findNextChange(bv_))
1260                         bv_->getLyXText()->rejectChange(cursor_);
1261                 break;
1262         }
1263
1264         case LFUN_WORD_FIND:
1265                 lyx::find::find(bv_, cmd);
1266                 break;
1267
1268         case LFUN_WORD_REPLACE:
1269                 lyx::find::replace(bv_, cmd);
1270                 break;
1271
1272         case LFUN_MARK_OFF:
1273                 cur.clearSelection();
1274                 cur.resetAnchor();
1275                 cur.message(N_("Mark off"));
1276                 break;
1277
1278         case LFUN_MARK_ON:
1279                 cur.clearSelection();
1280                 cur.mark() = true;
1281                 cur.resetAnchor();
1282                 cur.message(N_("Mark on"));
1283                 break;
1284
1285         case LFUN_SETMARK:
1286                 cur.clearSelection();
1287                 if (cur.mark()) {
1288                         cur.mark() = false;
1289                         cur.message(N_("Mark removed"));
1290                 } else {
1291                         cur.mark() = true;
1292                         cur.message(N_("Mark set"));
1293                 }
1294                 cur.resetAnchor();
1295                 break;
1296
1297         case LFUN_CENTER:
1298                 center();
1299                 break;
1300
1301         case LFUN_BIBDB_ADD: {
1302                 LCursor tmpcur = cursor_;
1303                 bv_funcs::findInset(tmpcur, InsetBase::BIBTEX_CODE, false);
1304                 InsetBibtex * inset = getInsetByCode<InsetBibtex>(tmpcur,
1305                                                 InsetBase::BIBTEX_CODE);
1306                 if (inset)
1307                         inset->addDatabase(cmd.argument);
1308                 break;
1309         }
1310
1311         case LFUN_BIBDB_DEL: {
1312                 LCursor tmpcur = cursor_;
1313                 bv_funcs::findInset(tmpcur, InsetBase::BIBTEX_CODE, false);
1314                 InsetBibtex * inset = getInsetByCode<InsetBibtex>(tmpcur,
1315                                                 InsetBase::BIBTEX_CODE);
1316                 if (inset)
1317                         inset->delDatabase(cmd.argument);
1318                 break;
1319         }
1320
1321         case LFUN_WORDS_COUNT: {
1322                 DocIterator from, to;
1323                 if (cur.selection()) {
1324                         from = cur.selectionBegin();
1325                         to = cur.selectionEnd();
1326                 } else {
1327                         from = doc_iterator_begin(buffer_->inset());
1328                         to = doc_iterator_end(buffer_->inset());
1329                 }
1330                 int const count = countWords(from, to);
1331                 string message;
1332                 if (count != 1) {
1333                         if (cur.selection())
1334                                 message = bformat(_("%1$d words in selection."),
1335                                           count);
1336                                 else
1337                                         message = bformat(_("%1$d words in document."),
1338                                                           count);
1339                 }
1340                 else {
1341                         if (cur.selection())
1342                                 message = _("One word in selection.");
1343                         else
1344                                 message = _("One word in document.");
1345                 }
1346
1347                 Alert::information(_("Count words"), message);
1348         }
1349                 break;
1350         default:
1351                 return false;
1352         }
1353
1354         return true;
1355 }
1356
1357
1358 ViewMetricsInfo BufferView::Pimpl::metrics(bool singlepar)
1359 {
1360         // Remove old position cache
1361         theCoords.clear();
1362         BufferView & bv = *bv_;
1363         LyXText * const text = bv.text();
1364         lyx::pit_type size = int(text->paragraphs().size());
1365
1366         if (anchor_ref_ > int(text->paragraphs().size() - 1)) {
1367                 anchor_ref_ = int(text->paragraphs().size() - 1);
1368                 offset_ref_ = 0;
1369         }
1370
1371         lyx::pit_type const pit = anchor_ref_;
1372         int pit1 = pit;
1373         int pit2 = pit;
1374         size_t const npit = text->paragraphs().size();
1375
1376         // Rebreak anchor paragraph. In Single Paragraph mode, rebreak only
1377         // the (main text, not inset!) paragraph containing the cursor.
1378         // (if this paragraph contains insets etc., rebreaking will
1379         // recursively descend)
1380         if (!singlepar || pit == cursor_.bottom().pit())
1381                 text->redoParagraph(pit);
1382         int y0 = text->getPar(pit).ascent() - offset_ref_;
1383
1384         // Redo paragraphs above anchor if necessary; again, in Single Par
1385         // mode, only if we encounter the (main text) one having the cursor.
1386         int y1 = y0;
1387         while (y1 > 0 && pit1 > 0) {
1388                 y1 -= text->getPar(pit1).ascent();
1389                 --pit1;
1390                 if (!singlepar || pit1 == cursor_.bottom().pit())
1391                         text->redoParagraph(pit1);
1392                 y1 -= text->getPar(pit1).descent();
1393         }
1394
1395
1396         // Take care of ascent of first line
1397         y1 -= text->getPar(pit1).ascent();
1398
1399         // Normalize anchor for next time
1400         anchor_ref_ = pit1;
1401         offset_ref_ = -y1;
1402
1403         // Grey at the beginning is ugly
1404         if (pit1 == 0 && y1 > 0) {
1405                 y0 -= y1;
1406                 y1 = 0;
1407                 anchor_ref_ = 0;
1408         }
1409
1410         // Redo paragraphs below the anchor if necessary. Single par mode:
1411         // only the one containing the cursor if encountered.
1412         int y2 = y0;
1413         while (y2 < bv.workHeight() && pit2 < int(npit) - 1) {
1414                 y2 += text->getPar(pit2).descent();
1415                 ++pit2;
1416                 if (!singlepar || pit2 == cursor_.bottom().pit())
1417                         text->redoParagraph(pit2);
1418                 y2 += text->getPar(pit2).ascent();
1419         }
1420
1421         // Take care of descent of last line
1422         y2 += text->getPar(pit2).descent();
1423
1424         // The coordinates of all these paragraphs are correct, cache them
1425         int y = y1;
1426         for (lyx::pit_type pit = pit1; pit <= pit2; ++pit) {
1427                 y += text->getPar(pit).ascent();
1428                 theCoords.parPos()[text][pit] = Point(0, y);
1429                 if (singlepar && pit == cursor_.bottom().pit()) {
1430                         // In Single Paragraph mode, collect here the
1431                         // y1 and y2 of the (one) paragraph the cursor is in
1432                         y1 = y - text->getPar(pit).ascent();
1433                         y2 = y + text->getPar(pit).descent();
1434                 }
1435                 y += text->getPar(pit).descent();
1436         }
1437
1438         if (singlepar) {
1439                 // collect cursor paragraph iter bounds
1440                 pit1 = cursor_.bottom().pit();
1441                 pit2 = cursor_.bottom().pit();
1442         }
1443
1444         lyxerr[Debug::DEBUG]
1445                 << BOOST_CURRENT_FUNCTION
1446                 << " y1: " << y1
1447                 << " y2: " << y2
1448                 << " pit1: " << pit1
1449                 << " pit2: " << pit2
1450                 << " npit: " << npit
1451                 << " singlepar: " << singlepar
1452                 << "size: " << size
1453                 << endl;
1454
1455         return ViewMetricsInfo(pit1, pit2, y1, y2, singlepar, size);
1456 }