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