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