src/BufferView_pimpl.C

   1 #include <config.h>
   2
   3 #include <unistd.h>
   4 #include <sys/wait.h>
   5
   6 #ifdef __GNUG__
   7 #pragma implementation
   8 #endif
   9
  10 #include "BufferView_pimpl.h"
  11 #include "WorkArea.h"
  12 #include "lyxscreen.h"
  13 #include "lyxtext.h"
  14 #include "lyxrow.h"
  15 #include "LyXView.h"
  16 #include "commandtags.h"
  17 #include "lyxfunc.h"
  18 #include "minibuffer.h"
  19 #include "font.h"
  20 #include "bufferview_funcs.h"
  21 #include "TextCache.h"
  22 #include "bufferlist.h"
  23 #include "insets/insetbib.h"
  24 #include "menus.h"
  25 #include "lyx_gui_misc.h"
  26 #include "lyxrc.h"
  27 #include "intl.h"
  28
  29 using std::pair;
  30 using std::endl;
  31
  32 /* the selection possible is needed, that only motion events are
  33  * used, where the bottom press event was on the drawing area too */
  34 bool selection_possible = false;
  35
  36 extern BufferList bufferlist;
  37 extern char ascii_type;
  38
  39 extern void sigchldhandler(pid_t pid, int * status);
  40 extern int bibitemMaxWidth(Painter &, LyXFont const &);
  41 extern void FreeUpdateTimer();
  42
  43 extern "C"
  44 void C_BufferView_CursorToggleCB(FL_OBJECT * ob, long buf);
  45
  46
  47 static inline
  48 void waitForX()
  49 {
  50         XSync(fl_get_display(), 0);
  51 }
  52
  53
  54 static
  55 void SetXtermCursor(Window win)
  56 {
  57         static Cursor cursor;
  58         static bool cursor_undefined = true;
  59         if (cursor_undefined){
  60                 cursor = XCreateFontCursor(fl_display, XC_xterm);
  61                 XFlush(fl_display);
  62                 cursor_undefined = false;
  63         }
  64         XDefineCursor(fl_display, win, cursor);
  65         XFlush(fl_display);
  66 }
  67
  68
  69 BufferView::Pimpl::Pimpl(BufferView * b, LyXView * o,
  70              int xpos, int ypos, int width, int height)
  71         : bv_(b), owner_(o)
  72 {
  73         buffer_ = 0;
  74         workarea = new WorkArea(bv_, xpos, ypos, width, height);
  75         screen = 0;
  76         timer_cursor = 0;
  77         create_view();
  78         current_scrollbar_value = 0;
  79         fl_set_timer(timer_cursor, 0.4);
  80         workarea->setFocus();
  81         work_area_focus = true;
  82         lyx_focus = false;
  83         using_xterm_cursor = false;
  84 }
  85
  86
  87 Painter & BufferView::Pimpl::painter()
  88 {
  89         return workarea->getPainter();
  90 }
  91
  92
  93 void BufferView::Pimpl::buffer(Buffer * b)
  94 {
  95         lyxerr[Debug::INFO] << "Setting buffer in BufferView ("
  96                             << b << ")" << endl;
  97         if (buffer_) {
  98                 bv_->insetSleep();
  99                 buffer_->delUser(bv_);
 100
 101                 // Put the old text into the TextCache, but
 102                 // only if the buffer is still loaded.
 103                 // Also set the owner of the test to 0
 104                 bv_->text->owner(0);
 105                 textcache.add(bv_->text);
 106                 if (lyxerr.debugging())
 107                         textcache.show(lyxerr, "BufferView::buffer");
 108
 109                 bv_->text = 0;
 110         }
 111
 112         // Set current buffer
 113         buffer_ = b;
 114
 115         if (bufferlist.getState() == BufferList::CLOSING) return;
 116
 117         // Nuke old image
 118         // screen is always deleted when the buffer is changed.
 119         delete screen;
 120         screen = 0;
 121
 122         // If we are closing the buffer, use the first buffer as current
 123         if (!buffer_) {
 124                 buffer_ = bufferlist.first();
 125         }
 126
 127         if (buffer_) {
 128                 lyxerr[Debug::INFO] << "Buffer addr: " << buffer_ << endl;
 129                 buffer_->addUser(bv_);
 130                 owner_->getMenus()->showMenus();
 131                 // If we don't have a text object for this, we make one
 132                 if (bv_->text == 0)
 133                         resizeCurrentBuffer();
 134                 else {
 135                         updateScreen();
 136                         updateScrollbar();
 137                 }
 138                 screen->first = screen->TopCursorVisible();
 139                 redraw();
 140                 updateAllVisibleBufferRelatedPopups();
 141                 bv_->insetWakeup();
 142         } else {
 143                 lyxerr[Debug::INFO] << "  No Buffer!" << endl;
 144                 owner_->getMenus()->hideMenus();
 145                 updateScrollbar();
 146                 workarea->redraw();
 147
 148                 // Also remove all remaining text's from the testcache.
 149                 // (there should not be any!) (if there is any it is a
 150                 // bug!)
 151                 if (lyxerr.debugging())
 152                         textcache.show(lyxerr, "buffer delete all");
 153                 textcache.clear();
 154         }
 155         // should update layoutchoice even if we don't have a buffer.
 156         owner_->updateLayoutChoice();
 157         owner_->getMiniBuffer()->Init();
 158         owner_->updateWindowTitle();
 159 }
 160
 161 void BufferView::Pimpl::resize(int xpos, int ypos, int width, int height)
 162 {
 163         workarea->resize(xpos, ypos, width, height);
 164         update(3);
 165         redraw();
 166 }
 167
 168
 169 void BufferView::Pimpl::resize()
 170 {
 171         // This will resize the buffer. (Asger)
 172         if (buffer_)
 173                 resizeCurrentBuffer();
 174 }
 175
 176
 177 void BufferView::Pimpl::redraw()
 178 {
 179         lyxerr[Debug::INFO] << "BufferView::redraw()" << endl;
 180         workarea->redraw();
 181 }
 182
 183
 184 void BufferView::Pimpl::fitCursor()
 185 {
 186         if (screen) screen->FitCursor();
 187         updateScrollbar();
 188 }
 189
 190
 191 void BufferView::Pimpl::redoCurrentBuffer()
 192 {
 193         lyxerr[Debug::INFO] << "BufferView::redoCurrentBuffer" << endl;
 194         if (buffer_ && bv_->text) {
 195                 resize();
 196                 owner_->updateLayoutChoice();
 197         }
 198 }
 199
 200
 201 int BufferView::Pimpl::resizeCurrentBuffer()
 202 {
 203         lyxerr[Debug::INFO] << "resizeCurrentBuffer" << endl;
 204
 205         LyXParagraph * par = 0;
 206         LyXParagraph * selstartpar = 0;
 207         LyXParagraph * selendpar = 0;
 208         int pos = 0;
 209         int selstartpos = 0;
 210         int selendpos = 0;
 211         int selection = 0;
 212         int mark_set = 0;
 213
 214         ProhibitInput(bv_);
 215
 216         owner_->getMiniBuffer()->Set(_("Formatting document..."));
 217
 218         if (bv_->text) {
 219                 par = bv_->text->cursor.par;
 220                 pos = bv_->text->cursor.pos;
 221                 selstartpar = bv_->text->sel_start_cursor.par;
 222                 selstartpos = bv_->text->sel_start_cursor.pos;
 223                 selendpar = bv_->text->sel_end_cursor.par;
 224                 selendpos = bv_->text->sel_end_cursor.pos;
 225                 selection = bv_->text->selection;
 226                 mark_set = bv_->text->mark_set;
 227                 delete bv_->text;
 228                 bv_->text = new LyXText(bv_, workarea->workWidth(), buffer_);
 229         } else {
 230                 // See if we have a text in TextCache that fits
 231                 // the new buffer_ with the correct width.
 232                 bv_->text = textcache.findFit(buffer_, workarea->workWidth());
 233                 if (bv_->text) {
 234                         if (lyxerr.debugging()) {
 235                                 lyxerr << "Found a LyXText that fits:\n";
 236                                 textcache.show(lyxerr, bv_->text);
 237                         }
 238                         // Set the owner of the newly found text
 239                         bv_->text->owner(bv_);
 240                         if (lyxerr.debugging())
 241                                 textcache.show(lyxerr, "resizeCurrentBuffer");
 242                 } else {
 243                         bv_->text = new LyXText(bv_, workarea->workWidth(), buffer_);
 244                 }
 245         }
 246         updateScreen();
 247
 248         if (par) {
 249                 bv_->text->selection = true;
 250                 /* at this point just to avoid the Delete-Empty-Paragraph
 251                  * Mechanism when setting the cursor */
 252                 bv_->text->mark_set = mark_set;
 253                 if (selection) {
 254                         bv_->text->SetCursor(selstartpar, selstartpos);
 255                         bv_->text->sel_cursor = bv_->text->cursor;
 256                         bv_->text->SetCursor(selendpar, selendpos);
 257                         bv_->text->SetSelection();
 258                         bv_->text->SetCursor(par, pos);
 259                 } else {
 260                         bv_->text->SetCursor(par, pos);
 261                         bv_->text->sel_cursor = bv_->text->cursor;
 262                         bv_->text->selection = false;
 263                 }
 264         }
 265         screen->first = screen->TopCursorVisible(); /* this will scroll the
 266                                                      * screen such that the
 267                                                      * cursor becomes
 268                                                      * visible */
 269         updateScrollbar();
 270         redraw();
 271         owner_->getMiniBuffer()->Init();
 272         bv_->setState();
 273         AllowInput(bv_);
 274
 275         // Now if the title form still exist kill it
 276         TimerCB(0, 0);
 277
 278         return 0;
 279 }
 280
 281
 282 void BufferView::Pimpl::gotoError()
 283 {
 284         if (!screen)
 285                 return;
 286
 287         screen->HideCursor();
 288         bv_->beforeChange();
 289         update(-2);
 290         LyXCursor tmp;
 291
 292         if (!bv_->text->GotoNextError()) {
 293                 if (bv_->text->cursor.pos
 294                     || bv_->text->cursor.par != bv_->text->FirstParagraph()) {
 295                         tmp = bv_->text->cursor;
 296                         bv_->text->cursor.par = bv_->text->FirstParagraph();
 297                         bv_->text->cursor.pos = 0;
 298                         if (!bv_->text->GotoNextError()) {
 299                                 bv_->text->cursor = tmp;
 300                                 owner_->getMiniBuffer()
 301                                         ->Set(_("No more errors"));
 302                                 LyXBell();
 303                         }
 304                 } else {
 305                         owner_->getMiniBuffer()->Set(_("No more errors"));
 306                         LyXBell();
 307                 }
 308         }
 309         update(0);
 310         bv_->text->sel_cursor = bv_->text->cursor;
 311 }
 312
 313
 314 void BufferView::Pimpl::updateScreen()
 315 {
 316         // Regenerate the screen.
 317         delete screen;
 318         screen = new LyXScreen(*workarea, bv_->text);
 319 }
 320
 321
 322 void BufferView::Pimpl::create_view()
 323 {
 324         FL_OBJECT * obj;
 325
 326         //
 327         // TIMERS
 328         //
 329
 330         // timer_cursor
 331         timer_cursor = obj = fl_add_timer(FL_HIDDEN_TIMER,
 332                                           0, 0, 0, 0, "Timer");
 333         fl_set_object_callback(obj, C_BufferView_CursorToggleCB, 0);
 334         obj->u_vdata = bv_;
 335 }
 336
 337
 338 void BufferView::Pimpl::updateScrollbar()
 339 {
 340         /* If the text is smaller than the working area, the scrollbar
 341          * maximum must be the working area height. No scrolling will
 342          * be possible */
 343
 344         if (!buffer_) {
 345                 workarea->setScrollbar(0, 1.0);
 346                 return;
 347         }
 348
 349         static long max2 = 0;
 350         static long height2 = 0;
 351
 352         long cbth = 0;
 353         long cbsf = 0;
 354
 355         if (bv_->text)
 356                 cbth = bv_->text->height;
 357         if (screen)
 358                 cbsf = screen->first;
 359
 360         // check if anything has changed.
 361         if (max2 == cbth &&
 362             height2 == workarea->height() &&
 363             current_scrollbar_value == cbsf)
 364                 return; // no
 365         max2 = cbth;
 366         height2 = workarea->height();
 367         current_scrollbar_value = cbsf;
 368
 369         if (cbth <= height2) { // text is smaller than screen
 370                 workarea->setScrollbar(0, 1.0); // right?
 371                 return;
 372         }
 373
 374         long maximum_height = workarea->height() * 3 / 4 + cbth;
 375         long value = cbsf;
 376
 377         // set the scrollbar
 378         double hfloat = workarea->height();
 379         double maxfloat = maximum_height;
 380
 381         float slider_size = 0.0;
 382         int slider_value = value;
 383
 384         workarea->setScrollbarBounds(0, bv_->text->height - workarea->height());
 385         double lineh = bv_->text->DefaultHeight();
 386         workarea->setScrollbarIncrements(lineh);
 387         if (maxfloat > 0.0) {
 388                 if ((hfloat / maxfloat) * float(height2) < 3)
 389                         slider_size = 3.0/float(height2);
 390                 else
 391                         slider_size = hfloat / maxfloat;
 392         } else
 393                 slider_size = hfloat;
 394
 395         workarea->setScrollbar(slider_value, slider_size / workarea->height());
 396 }
 397
 398
 399 // Callback for scrollbar slider
 400 void BufferView::Pimpl::scrollCB(double value)
 401 {
 402         extern bool cursor_follows_scrollbar;
 403
 404         if (buffer_ == 0) return;
 405
 406         current_scrollbar_value = long(value);
 407         if (current_scrollbar_value < 0)
 408                 current_scrollbar_value = 0;
 409
 410         if (!screen)
 411                 return;
 412
 413         screen->Draw(current_scrollbar_value);
 414
 415         if (cursor_follows_scrollbar) {
 416                 LyXText * vbt = bv_->text;
 417                 int height = vbt->DefaultHeight();
 418
 419                 if (vbt->cursor.y < screen->first + height) {
 420                         vbt->SetCursorFromCoordinates(0,
 421                                                       screen->first +
 422                                                       height);
 423                 } else if (vbt->cursor.y >
 424                            screen->first + workarea->height() - height) {
 425                         vbt->SetCursorFromCoordinates(0,
 426                                                       screen->first +
 427                                                       workarea->height()  -
 428                                                       height);
 429                 }
 430         }
 431         waitForX();
 432 }
 433
 434
 435 // Callback for scrollbar down button
 436 void BufferView::Pimpl::downCB(long time, int button)
 437 {
 438         if (buffer_ == 0) return;
 439
 440         switch (button) {
 441         case 2:
 442                 scrollUpOnePage();
 443                 break;
 444         case 3:
 445                 scrollDownOnePage();
 446                 break;
 447         default:
 448                 scrollDown(time);
 449                 break;
 450         }
 451 }
 452
 453
 454 int BufferView::Pimpl::scrollUp(long time)
 455 {
 456         if (buffer_ == 0) return 0;
 457         if (!screen) return 0;
 458
 459         double value = workarea->getScrollbarValue();
 460
 461         if (value == 0) return 0;
 462
 463         float add_value =  (bv_->text->DefaultHeight()
 464                             + float(time) * float(time) * 0.125);
 465
 466         if (add_value > workarea->height())
 467                 add_value = float(workarea->height() -
 468                                   bv_->text->DefaultHeight());
 469
 470         value -= add_value;
 471
 472         if (value < 0)
 473                 value = 0;
 474
 475         workarea->setScrollbarValue(value);
 476
 477         bv_->scrollCB(value);
 478         return 0;
 479 }
 480
 481
 482 int BufferView::Pimpl::scrollDown(long time)
 483 {
 484         if (buffer_ == 0) return 0;
 485         if (!screen) return 0;
 486
 487         double value= workarea->getScrollbarValue();
 488         pair<double, double> p = workarea->getScrollbarBounds();
 489         double max = p.second;
 490
 491         if (value == max) return 0;
 492
 493         float add_value =  (bv_->text->DefaultHeight()
 494                             + float(time) * float(time) * 0.125);
 495
 496         if (add_value > workarea->height())
 497                 add_value = float(workarea->height() -
 498                                   bv_->text->DefaultHeight());
 499
 500         value += add_value;
 501
 502         if (value > max)
 503                 value = max;
 504
 505         workarea->setScrollbarValue(value);
 506
 507         bv_->scrollCB(value);
 508         return 0;
 509 }
 510
 511
 512 void BufferView::Pimpl::scrollUpOnePage()
 513 {
 514         if (buffer_ == 0) return;
 515         if (!screen) return;
 516
 517         long y = screen->first;
 518
 519         if (!y) return;
 520
 521         Row * row = bv_->text->GetRowNearY(y);
 522
 523         y = y - workarea->height() + row->height;
 524
 525         workarea->setScrollbarValue(y);
 526
 527         bv_->scrollCB(y);
 528 }
 529
 530
 531 void BufferView::Pimpl::scrollDownOnePage()
 532 {
 533         if (buffer_ == 0) return;
 534         if (!screen) return;
 535
 536         long y = screen->first;
 537
 538         if (y > bv_->text->height - workarea->height())
 539                 return;
 540
 541         y += workarea->height();
 542         bv_->text->GetRowNearY(y);
 543
 544         workarea->setScrollbarValue(y);
 545
 546         bv_->scrollCB(y);
 547 }
 548
 549
 550 void BufferView::Pimpl::workAreaMotionNotify(int x, int y, unsigned int state)
 551 {
 552         if (buffer_ == 0 || !screen) return;
 553
 554         // Only use motion with button 1
 555         if (!state & Button1MotionMask)
 556                 return;
 557
 558         // Check for inset locking
 559         if (bv_->the_locking_inset) {
 560                 LyXCursor cursor = bv_->text->cursor;
 561                 bv_->the_locking_inset->
 562                         InsetMotionNotify(bv_,
 563                                           x - cursor.x,
 564                                           y - cursor.y,
 565                                           state);
 566                 return;
 567         }
 568
 569         /* The selection possible is needed, that only motion events are
 570          * used, where the bottom press event was on the drawing area too */
 571         if (selection_possible) {
 572                 screen->HideCursor();
 573
 574                 bv_->text->SetCursorFromCoordinates(x, y + screen->first);
 575
 576                 if (!bv_->text->selection)
 577                         update(-3); // Maybe an empty line was deleted
 578
 579                 bv_->text->SetSelection();
 580                 screen->ToggleToggle();
 581                 if (screen->FitCursor())
 582                         updateScrollbar();
 583                 screen->ShowCursor();
 584         }
 585         return;
 586 }
 587
 588
 589 // Single-click on work area
 590 void BufferView::Pimpl::workAreaButtonPress(int xpos, int ypos,
 591                                             unsigned int button)
 592 {
 593         last_click_x = -1;
 594         last_click_y = -1;
 595
 596         if (buffer_ == 0 || !screen) return;
 597
 598         Inset * inset_hit = checkInsetHit(xpos, ypos, button);
 599
 600         // ok ok, this is a hack.
 601         if (button == 4 || button == 5) {
 602                 switch (button) {
 603                 case 4:
 604                         scrollUp(100); // This number is only temporary
 605                         break;
 606                 case 5:
 607                         scrollDown(100);
 608                         break;
 609                 }
 610         }
 611
 612         if (bv_->the_locking_inset) {
 613                 // We are in inset locking mode
 614
 615                 /* Check whether the inset was hit. If not reset mode,
 616                    otherwise give the event to the inset */
 617                 if (inset_hit == bv_->the_locking_inset) {
 618                         bv_->the_locking_inset->
 619                                 InsetButtonPress(bv_,
 620                                                  xpos, ypos,
 621                                                  button);
 622                         return;
 623                 } else {
 624                         bv_->unlockInset(bv_->the_locking_inset);
 625                 }
 626         }
 627
 628         if (!inset_hit)
 629                 selection_possible = true;
 630         screen->HideCursor();
 631
 632         // Right button mouse click on a table
 633         if (button == 3 &&
 634             (bv_->text->cursor.par->table ||
 635              bv_->text->MouseHitInTable(xpos, ypos + screen->first))) {
 636                 // Set the cursor to the press-position
 637                 bv_->text->SetCursorFromCoordinates(xpos, ypos + screen->first);
 638                 bool doit = true;
 639
 640                 // Only show the table popup if the hit is in
 641                 // the table, too
 642                 if (!bv_->text->HitInTable(bv_->text->cursor.row, xpos))
 643                         doit = false;
 644
 645                 // Hit above or below the table?
 646                 if (doit) {
 647                         if (!bv_->text->selection) {
 648                                 screen->ToggleSelection();
 649                                 bv_->text->ClearSelection();
 650                                 bv_->text->FullRebreak();
 651                                 screen->Update();
 652                                 updateScrollbar();
 653                         }
 654                         // Popup table popup when on a table.
 655                         // This is obviously temporary, since we
 656                         // should be able to popup various
 657                         // context-sensitive-menus with the
 658                         // the right mouse. So this should be done more
 659                         // general in the future. Matthias.
 660                         selection_possible = false;
 661                         owner_->getLyXFunc()
 662                                 ->Dispatch(LFUN_LAYOUT_TABLE,
 663                                            "true");
 664                         return;
 665                 }
 666         }
 667
 668         int screen_first = screen->first;
 669
 670         // Middle button press pastes if we have a selection
 671         bool paste_internally = false;
 672         if (button == 2
 673             && bv_->text->selection) {
 674                 owner_->getLyXFunc()->Dispatch(LFUN_COPY);
 675                 paste_internally = true;
 676         }
 677
 678         // Clear the selection
 679         screen->ToggleSelection();
 680         bv_->text->ClearSelection();
 681         bv_->text->FullRebreak();
 682         screen->Update();
 683         updateScrollbar();
 684
 685         // Single left click in math inset?
 686         if ((inset_hit != 0) &&
 687             (inset_hit->Editable()==Inset::HIGHLY_EDITABLE)) {
 688                 // Highly editable inset, like math
 689                 UpdatableInset * inset = static_cast<UpdatableInset *>(inset_hit);
 690                 selection_possible = false;
 691                 owner_->updateLayoutChoice();
 692                 owner_->getMiniBuffer()->Set(inset->EditMessage());
 693                 inset->InsetButtonPress(bv_, xpos, ypos, button);
 694                 inset->Edit(bv_, xpos, ypos, button);
 695                 return;
 696         }
 697
 698         // Right click on a footnote flag opens float menu
 699         if (button == 3) {
 700                 selection_possible = false;
 701                 return;
 702         }
 703
 704         if (!inset_hit) // otherwise it was already set in checkInsetHit(...)
 705                 bv_->text->SetCursorFromCoordinates(xpos, ypos + screen_first);
 706         bv_->text->FinishUndo();
 707         bv_->text->sel_cursor = bv_->text->cursor;
 708         bv_->text->cursor.x_fix = bv_->text->cursor.x;
 709
 710         owner_->updateLayoutChoice();
 711         if (screen->FitCursor()){
 712                 updateScrollbar();
 713                 selection_possible = false;
 714         }
 715
 716         // Insert primary selection with middle mouse
 717         // if there is a local selection in the current buffer,
 718         // insert this
 719         if (button == 2) {
 720                 if (paste_internally)
 721                         owner_->getLyXFunc()->Dispatch(LFUN_PASTE);
 722                 else
 723                         owner_->getLyXFunc()->Dispatch(LFUN_PASTESELECTION,
 724                                                        "paragraph");
 725                 selection_possible = false;
 726                 return;
 727         }
 728 }
 729
 730
 731 void BufferView::Pimpl::doubleClick(int /*x*/, int /*y*/, unsigned int button)
 732 {
 733         // select a word
 734         if (buffer_ && !bv_->the_locking_inset) {
 735                 if (screen && button == 1) {
 736                         screen->HideCursor();
 737                         screen->ToggleSelection();
 738                         bv_->text->SelectWord();
 739                         screen->ToggleSelection(false);
 740                         /* This will fit the cursor on the screen
 741                          * if necessary */
 742                         update(0);
 743                 }
 744         }
 745 }
 746
 747
 748 void BufferView::Pimpl::tripleClick(int /*x*/, int /*y*/, unsigned int button)
 749 {
 750         // select a line
 751         if (buffer_ && screen && button == 1) {
 752                 screen->HideCursor();
 753                 screen->ToggleSelection();
 754                 bv_->text->CursorHome();
 755                 bv_->text->sel_cursor = bv_->text->cursor;
 756                 bv_->text->CursorEnd();
 757                 bv_->text->SetSelection();
 758                 screen->ToggleSelection(false);
 759                 /* This will fit the cursor on the screen
 760                  * if necessary */
 761                 update(0);
 762         }
 763 }
 764
 765
 766 void BufferView::Pimpl::enterView()
 767 {
 768         if (active() && available()) {
 769                 SetXtermCursor(workarea->getWin());
 770                 using_xterm_cursor = true;
 771         }
 772 }
 773
 774
 775 void BufferView::Pimpl::leaveView()
 776 {
 777         if (using_xterm_cursor) {
 778                 XUndefineCursor(fl_display, workarea->getWin());
 779                 using_xterm_cursor = false;
 780         }
 781 }
 782
 783
 784 void BufferView::Pimpl::workAreaButtonRelease(int x, int y, unsigned int button)
 785 {
 786         if (buffer_ == 0 || screen == 0) return;
 787
 788         // If we hit an inset, we have the inset coordinates in these
 789         // and inset_hit points to the inset.  If we do not hit an
 790         // inset, inset_hit is 0, and inset_x == x, inset_y == y.
 791         Inset * inset_hit = checkInsetHit(x, y, button);
 792
 793         if (bv_->the_locking_inset) {
 794                 // We are in inset locking mode.
 795
 796                 /* LyX does a kind of work-area grabbing for insets.
 797                    Only a ButtonPress Event outside the inset will
 798                    force a InsetUnlock. */
 799                 bv_->the_locking_inset->
 800                         InsetButtonRelease(bv_, x, y, button);
 801                 return;
 802         }
 803
 804         selection_possible = false;
 805         if (bv_->text->cursor.par->table) {
 806                 int cell = bv_->text->
 807                         NumberOfCell(bv_->text->cursor.par,
 808                                      bv_->text->cursor.pos);
 809                 if (bv_->text->cursor.par->table->IsContRow(cell) &&
 810                     bv_->text->cursor.par->table->
 811                     CellHasContRow(bv_->text->cursor.par->table->
 812                                    GetCellAbove(cell))<0) {
 813                         bv_->text->CursorUp();
 814                 }
 815         }
 816
 817         if (button >= 2) return;
 818
 819         bv_->setState();
 820         owner_->getMiniBuffer()->Set(CurrentState(bv_));
 821
 822         // Did we hit an editable inset?
 823         if (inset_hit != 0) {
 824                 // Inset like error, notes and figures
 825                 selection_possible = false;
 826 #ifdef WITH_WARNINGS
 827 #warning fix this proper in 0.13
 828 #endif
 829                 // Following a ref shouldn't issue
 830                 // a push on the undo-stack
 831                 // anylonger, now that we have
 832                 // keybindings for following
 833                 // references and returning from
 834                 // references.  IMHO though, it
 835                 // should be the inset's own business
 836                 // to push or not push on the undo
 837                 // stack. They don't *have* to
 838                 // alter the document...
 839                 // (Joacim)
 840                 // ...or maybe the SetCursorParUndo()
 841                 // below isn't necessary at all anylonger?
 842                 if (inset_hit->LyxCode() == Inset::REF_CODE) {
 843                         bv_->text->SetCursorParUndo();
 844                 }
 845
 846                 owner_->getMiniBuffer()->Set(inset_hit->EditMessage());
 847                 if (inset_hit->Editable()==Inset::HIGHLY_EDITABLE) {
 848                         // Highly editable inset, like math
 849                         UpdatableInset *inset = (UpdatableInset *)inset_hit;
 850                         inset->InsetButtonRelease(bv_, x, y, button);
 851                 } else {
 852                         inset_hit->InsetButtonRelease(bv_, x, y, button);
 853                         inset_hit->Edit(bv_, x, y, button);
 854                 }
 855                 return;
 856         }
 857
 858         // check whether we want to open a float
 859         if (bv_->text) {
 860                 bool hit = false;
 861                 char c = ' ';
 862                 if (bv_->text->cursor.pos <
 863                     bv_->text->cursor.par->Last()) {
 864                         c = bv_->text->cursor.par->
 865                                 GetChar(bv_->text->cursor.pos);
 866                 }
 867                 if (c == LyXParagraph::META_FOOTNOTE
 868                     || c == LyXParagraph::META_MARGIN
 869                     || c == LyXParagraph::META_FIG
 870                     || c == LyXParagraph::META_TAB
 871                     || c == LyXParagraph::META_WIDE_FIG
 872                     || c == LyXParagraph::META_WIDE_TAB
 873                     || c == LyXParagraph::META_ALGORITHM){
 874                         hit = true;
 875                 } else if (bv_->text->cursor.pos - 1 >= 0) {
 876                         c = bv_->text->cursor.par->
 877                                 GetChar(bv_->text->cursor.pos - 1);
 878                         if (c == LyXParagraph::META_FOOTNOTE
 879                             || c == LyXParagraph::META_MARGIN
 880                             || c == LyXParagraph::META_FIG
 881                             || c == LyXParagraph::META_TAB
 882                             || c == LyXParagraph::META_WIDE_FIG
 883                             || c == LyXParagraph::META_WIDE_TAB
 884                             || c == LyXParagraph::META_ALGORITHM){
 885                                 // We are one step too far to the right
 886                                 bv_->text->CursorLeft();
 887                                 hit = true;
 888                         }
 889                 }
 890                 if (hit == true) {
 891                         bv_->toggleFloat();
 892                         selection_possible = false;
 893                         return;
 894                 }
 895         }
 896
 897         // Do we want to close a float? (click on the float-label)
 898         if (bv_->text->cursor.row->par->footnoteflag ==
 899             LyXParagraph::OPEN_FOOTNOTE
 900             //&& text->cursor.pos == 0
 901             && bv_->text->cursor.row->previous &&
 902             bv_->text->cursor.row->previous->par->
 903             footnoteflag != LyXParagraph::OPEN_FOOTNOTE){
 904                 LyXFont font(LyXFont::ALL_SANE);
 905                 font.setSize(LyXFont::SIZE_FOOTNOTE);
 906
 907                 int box_x = 20; // LYX_PAPER_MARGIN;
 908                 box_x += lyxfont::width(" wide-tab ", font);
 909
 910                 int screen_first = screen->first;
 911
 912                 if (x < box_x
 913                     && y + screen_first > bv_->text->cursor.y -
 914                     bv_->text->cursor.row->baseline
 915                     && y + screen_first < bv_->text->cursor.y -
 916                     bv_->text->cursor.row->baseline
 917                     + lyxfont::maxAscent(font) * 1.2 + lyxfont::maxDescent(font) * 1.2) {
 918                         bv_->toggleFloat();
 919                         selection_possible = false;
 920                         return;
 921                 }
 922         }
 923
 924         // Maybe we want to edit a bibitem ale970302
 925         if (bv_->text->cursor.par->bibkey && x < 20 +
 926             bibitemMaxWidth(bv_->painter(),
 927                             textclasslist
 928                             .TextClass(buffer_->
 929                                        params.textclass).defaultfont())) {
 930                 bv_->text->cursor.par->bibkey->Edit(bv_, 0, 0, 0);
 931         }
 932
 933         return;
 934 }
 935
 936
 937 /*
 938  * Returns an inset if inset was hit. 0 otherwise.
 939  * If hit, the coordinates are changed relative to the inset.
 940  * Otherwise coordinates are not changed, and false is returned.
 941  */
 942 Inset * BufferView::Pimpl::checkInsetHit(int & x, int & y, unsigned int /* button */)
 943 {
 944         if (!screen)
 945                 return 0;
 946
 947         int y_tmp = y + screen->first;
 948
 949         LyXCursor cursor;
 950         bv_->text->SetCursorFromCoordinates(cursor, x, y_tmp);
 951         bool move_cursor = ((cursor.par != bv_->text->cursor.par) ||
 952                             (cursor.pos != bv_->text->cursor.pos));
 953
 954         if (cursor.pos < cursor.par->Last()
 955             && cursor.par->GetChar(cursor.pos) == LyXParagraph::META_INSET
 956             && cursor.par->GetInset(cursor.pos)
 957             && cursor.par->GetInset(cursor.pos)->Editable()) {
 958
 959                 // Check whether the inset really was hit
 960                 Inset * tmpinset = cursor.par->GetInset(cursor.pos);
 961                 LyXFont font = bv_->text->GetFont(cursor.par, cursor.pos);
 962                 bool is_rtl = font.isVisibleRightToLeft();
 963                 int start_x, end_x;
 964
 965                 if (is_rtl) {
 966                         start_x = cursor.x - tmpinset->width(bv_->painter(), font);
 967                         end_x = cursor.x;
 968                 } else {
 969                         start_x = cursor.x;
 970                         end_x = cursor.x + tmpinset->width(bv_->painter(), font);
 971                 }
 972
 973                 if (x > start_x && x < end_x
 974                     && y_tmp > cursor.y - tmpinset->ascent(bv_->painter(), font)
 975                     && y_tmp < cursor.y + tmpinset->descent(bv_->painter(), font)) {
 976                         if (move_cursor && (tmpinset != bv_->the_locking_inset))
 977                                 bv_->text->SetCursor(cursor.par,cursor.pos,true);
 978                         x = x - start_x;
 979                         // The origin of an inset is on the baseline
 980                         y = y_tmp - (bv_->text->cursor.y);
 981                         return tmpinset;
 982                 }
 983         }
 984
 985         if ((cursor.pos - 1 >= 0) &&
 986             (cursor.par->GetChar(cursor.pos-1) == LyXParagraph::META_INSET) &&
 987             (cursor.par->GetInset(cursor.pos - 1)) &&
 988             (cursor.par->GetInset(cursor.pos - 1)->Editable())) {
 989                 Inset * tmpinset = cursor.par->GetInset(cursor.pos-1);
 990                 LyXFont font = bv_->text->GetFont(cursor.par, cursor.pos-1);
 991                 bool is_rtl = font.isVisibleRightToLeft();
 992                 int start_x, end_x;
 993
 994                 if (!is_rtl) {
 995                         start_x = cursor.x - tmpinset->width(bv_->painter(), font);
 996                         end_x = cursor.x;
 997                 } else {
 998                         start_x = cursor.x;
 999                         end_x = cursor.x + tmpinset->width(bv_->painter(), font);
1000                 }
1001                 if (x > start_x && x < end_x
1002                     && y_tmp > cursor.y - tmpinset->ascent(bv_->painter(), font)
1003                     && y_tmp < cursor.y + tmpinset->descent(bv_->painter(), font)) {
1004                         if (move_cursor && (tmpinset != bv_->the_locking_inset))
1005                                 bv_->text->SetCursor(cursor.par,cursor.pos,true);
1006                         x = x - start_x;
1007                         // The origin of an inset is on the baseline
1008                         y = y_tmp - (bv_->text->cursor.y);
1009                         return tmpinset;
1010                 }
1011         }
1012         return 0;
1013 }
1014
1015
1016 void BufferView::Pimpl::workAreaExpose()
1017 {
1018         // this is a hack to ensure that we only call this through
1019         // BufferView::redraw().
1020         //if (!lgb_hack) {
1021         //      redraw();
1022         //}
1023
1024         static int work_area_width = -1;
1025         static int work_area_height = -1;
1026
1027         bool widthChange = workarea->workWidth() != work_area_width;
1028         bool heightChange = workarea->height() != work_area_height;
1029
1030         // update from work area
1031         work_area_width = workarea->workWidth();
1032         work_area_height = workarea->height();
1033         if (buffer_ != 0) {
1034                 if (widthChange) {
1035                         // All buffers need a resize
1036                         bufferlist.resize();
1037
1038                         // Remove all texts from the textcache
1039                         // This is not _really_ what we want to do. What
1040                         // we really want to do is to delete in textcache
1041                         // that does not have a BufferView with matching
1042                         // width, but as long as we have only one BufferView
1043                         // deleting all gives the same result.
1044                         if (lyxerr.debugging())
1045                                 textcache.show(lyxerr, "Expose delete all");
1046                         textcache.clear();
1047                 } else if (heightChange) {
1048                         // Rebuild image of current screen
1049                         updateScreen();
1050                         // fitCursor() ensures we don't jump back
1051                         // to the start of the document on vertical
1052                         // resize
1053                         fitCursor();
1054
1055                         // The main window size has changed, repaint most stuff
1056                         redraw();
1057                         // ...including the minibuffer
1058                         owner_->getMiniBuffer()->Init();
1059
1060                 } else if (screen) screen->Redraw();
1061         } else {
1062                 // Grey box when we don't have a buffer
1063                 workarea->greyOut();
1064         }
1065
1066         // always make sure that the scrollbar is sane.
1067         updateScrollbar();
1068         owner_->updateLayoutChoice();
1069         return;
1070 }
1071
1072
1073 static
1074 string fromClipboard(Window win, XEvent * event)
1075 {
1076         string strret;
1077         if (event->xselection.type == XA_STRING
1078             && event->xselection.property) {
1079                 Atom tmpatom;
1080                 unsigned long ul1;
1081                 unsigned long ul2;
1082                 unsigned char * uc = 0;
1083                 int tmpint;
1084                 if (XGetWindowProperty(
1085                         event->xselection.display,  // display
1086                         win,                        // w
1087                         event->xselection.property, // property
1088                         0,                          // long_offset
1089                         0,                          // logn_length
1090                         False,                      // delete
1091                         XA_STRING,                  // req_type
1092                         &tmpatom,                   // actual_type_return
1093                         &tmpint,                    // actual_format_return
1094                         &ul1,
1095                         &ul2,
1096                         &uc                         // prop_return
1097                         ) != Success) {
1098                         return strret;
1099                 }
1100                 if (uc) {
1101                         free(uc);
1102                         uc = 0;
1103                 }
1104                 if (XGetWindowProperty(
1105                         event->xselection.display,             // display
1106                         win,                        // w
1107                         event->xselection.property, // property
1108                         0,                          // long_offset
1109                         ul2/4+1,                    // long_length
1110                         True,                       // delete
1111                         XA_STRING,                  // req_type
1112                         &tmpatom,                   // actual_type_return
1113                         &tmpint,                    // actual_format_return
1114                         &ul1,                       // nitems_return
1115                         &ul2,                       // bytes_after_return
1116                         &uc                         // prop_return */
1117                         ) != Success) {
1118                         return strret;
1119                 }
1120                 if (uc) {
1121                         strret = reinterpret_cast<char*>(uc);
1122                         free(uc); // yes free!
1123                         uc = 0;
1124                 }
1125         }
1126         return strret;
1127 }
1128
1129
1130 void BufferView::Pimpl::workAreaSelectionNotify(Window win, XEvent * event)
1131 {
1132         if (buffer_ == 0) return;
1133
1134         screen->HideCursor();
1135         bv_->beforeChange();
1136         string clb = fromClipboard(win, event);
1137         if (!clb.empty()) {
1138                 if (!ascii_type)
1139                         bv_->text->InsertStringA(clb);
1140                 else
1141                         bv_->text->InsertStringB(clb);
1142
1143                 update(1);
1144         }
1145 }
1146
1147
1148 void BufferView::Pimpl::update()
1149 {
1150         if (screen) screen->Update();
1151 }
1152
1153
1154 void BufferView::Pimpl::update(signed char f)
1155 {
1156         owner_->updateLayoutChoice();
1157
1158         if (!bv_->text->selection && f > -3)
1159                 bv_->text->sel_cursor = bv_->text->cursor;
1160
1161         FreeUpdateTimer();
1162         bv_->text->FullRebreak();
1163
1164         update();
1165
1166         if (f != 3 && f != -3) {
1167                 fitCursor();
1168                 updateScrollbar();
1169         }
1170
1171         if (f == 1 || f == -1) {
1172                 if (buffer_->isLyxClean()) {
1173                         buffer_->markDirty();
1174                         owner_->getMiniBuffer()->setTimer(4);
1175                 } else {
1176                         buffer_->markDirty();
1177                 }
1178         }
1179 }
1180
1181
1182 void BufferView::Pimpl::smallUpdate(signed char f)
1183 {
1184         screen->SmallUpdate();
1185         if (screen->TopCursorVisible()
1186             != screen->first) {
1187                 update(f);
1188                 return;
1189         }
1190
1191         fitCursor();
1192         updateScrollbar();
1193
1194         if (!bv_->text->selection)
1195                 bv_->text->sel_cursor = bv_->text->cursor;
1196
1197         if (f == 1 || f == -1) {
1198                 if (buffer_->isLyxClean()) {
1199                         buffer_->markDirty();
1200                         owner_->getMiniBuffer()->setTimer(4);
1201                 } else {
1202                         buffer_->markDirty();
1203                 }
1204         }
1205 }
1206
1207
1208 // Callback for cursor timer
1209 void BufferView::Pimpl::cursorToggle()
1210 {
1211         // Quite a nice place for asyncron Inset updating, isn't it?
1212         // Actually no! This is run even if no buffer exist... so (Lgb)
1213         if (!buffer_) {
1214                 goto set_timer_and_return;
1215         }
1216
1217         // NOTE:
1218         // On my quest to solve the gs render hangups I am now
1219         // disabling the SIGHUP completely, and will do a wait
1220         // now and then instead. If the guess that xforms somehow
1221         // destroys something is true, this is likely (hopefully)
1222         // to solve the problem...at least I hope so. Lgb
1223
1224         // ...Ok this seems to work...at least it does not make things
1225         // worse so far. However I still see gs processes that hangs.
1226         // I would really like to know _why_ they are hanging. Anyway
1227         // the solution without the SIGCHLD handler seems to be easier
1228         // to debug.
1229
1230         // When attaching gdb to a a running gs that hangs it shows
1231         // that it is waiting for input(?) Is it possible for us to
1232         // provide that input somehow? Or figure what it is expecing
1233         // to read?
1234
1235         // One solution is to, after some time, look if there are some
1236         // old gs processes still running and if there are: kill them
1237         // and re render.
1238
1239         // Another solution is to provide the user an option to rerender
1240         // a picture. This would, for the picture in question, check if
1241         // there is a gs running for it, if so kill it, and start a new
1242         // rendering process.
1243
1244         // these comments posted to lyx@via
1245         {
1246                 int status = 1;
1247                 int pid = waitpid(static_cast<pid_t>(0), &status, WNOHANG);
1248                 if (pid == -1) // error find out what is wrong
1249                         ; // ignore it for now.
1250                 else if (pid > 0)
1251                         sigchldhandler(pid, &status);
1252         }
1253
1254         updatelist.update(bv_);
1255
1256         if (!screen) {
1257                 goto set_timer_and_return;
1258         }
1259
1260         if (lyx_focus && work_area_focus) {
1261                 if (!bv_->the_locking_inset) {
1262                         screen->CursorToggle();
1263                 } else {
1264                         bv_->the_locking_inset->
1265                                 ToggleInsetCursor(bv_);
1266                 }
1267                 goto set_timer_and_return;
1268         } else {
1269                 // Make sure that the cursor is visible.
1270                 if (!bv_->the_locking_inset) {
1271                         screen->ShowCursor();
1272                 } else {
1273                         if (!bv_->the_locking_inset->isCursorVisible())
1274                                 bv_->the_locking_inset->
1275                                         ToggleInsetCursor(bv_);
1276                 }
1277                 // This is only run when work_area_focus or lyx_focus is false.
1278                 Window tmpwin;
1279                 int tmp;
1280                 XGetInputFocus(fl_display, &tmpwin, &tmp);
1281                 // Commenting this out, we have not had problems with this
1282                 // for a long time. We will probably work on this code later
1283                 // and we can reenable this debug code then. Now it only
1284                 // anoying when debugging. (Lgb)
1285                 //if (lyxerr.debugging(Debug::INFO)) {
1286                 //      lyxerr << "tmpwin: " << tmpwin
1287                 //             << "\nwindow: " << view->owner_->getForm()->window
1288                 //             << "\nwork_area_focus: " << view->work_area_focus
1289                 //             << "\nlyx_focus      : " << view->lyx_focus
1290                 //             << endl;
1291                 //}
1292                 if (tmpwin != owner_->getForm()->window) {
1293                         lyx_focus = false;
1294                         goto skip_timer;
1295                 } else {
1296                         lyx_focus = true;
1297                         if (!work_area_focus)
1298                                 goto skip_timer;
1299                         else
1300                                 goto set_timer_and_return;
1301                 }
1302         }
1303
1304   set_timer_and_return:
1305         fl_set_timer(timer_cursor, 0.4);
1306   skip_timer:
1307         return;
1308 }
1309
1310
1311 void BufferView::Pimpl::cursorPrevious()
1312 {
1313         if (!bv_->text->cursor.row->previous) return;
1314
1315         long y = screen->first;
1316         Row * cursorrow = bv_->text->cursor.row;
1317         bv_->text->SetCursorFromCoordinates(bv_->text->cursor.x_fix, y);
1318         bv_->text->FinishUndo();
1319         // This is to allow jumping over large insets
1320         if ((cursorrow == bv_->text->cursor.row))
1321                 bv_->text->CursorUp();
1322
1323         if (bv_->text->cursor.row->height < workarea->height())
1324                 screen->Draw(bv_->text->cursor.y
1325                                   - bv_->text->cursor.row->baseline
1326                                   + bv_->text->cursor.row->height
1327                                   - workarea->height() + 1 );
1328 }
1329
1330
1331 void BufferView::Pimpl::cursorNext()
1332 {
1333         if (!bv_->text->cursor.row->next) return;
1334
1335         long y = screen->first;
1336         bv_->text->GetRowNearY(y);
1337         Row * cursorrow = bv_->text->cursor.row;
1338         bv_->text->SetCursorFromCoordinates(bv_->text->cursor.x_fix, y
1339                                        + workarea->height());
1340         bv_->text->FinishUndo();
1341         // This is to allow jumping over large insets
1342         if ((cursorrow == bv_->text->cursor.row))
1343                 bv_->text->CursorDown();
1344
1345         if (bv_->text->cursor.row->height < workarea->height())
1346                 screen->Draw(bv_->text->cursor.y
1347                              - bv_->text->cursor.row->baseline);
1348 }
1349
1350
1351 bool BufferView::Pimpl::available() const
1352 {
1353         if (buffer_ && bv_->text) return true;
1354         return false;
1355 }
1356
1357
1358 void BufferView::Pimpl::beforeChange()
1359 {
1360         toggleSelection();
1361         bv_->text->ClearSelection();
1362         FreeUpdateTimer();
1363 }
1364
1365
1366 void BufferView::Pimpl::savePosition()
1367 {
1368         backstack.push(buffer_->fileName(),
1369                        bv_->text->cursor.x,
1370                        bv_->text->cursor.y);
1371 }
1372
1373
1374 void BufferView::Pimpl::restorePosition()
1375 {
1376         if (backstack.empty()) return;
1377
1378         int  x, y;
1379         string fname = backstack.pop(&x, &y);
1380
1381         beforeChange();
1382         Buffer * b = bufferlist.exists(fname) ?
1383                 bufferlist.getBuffer(fname) :
1384                 bufferlist.loadLyXFile(fname); // don't ask, just load it
1385         buffer(b);
1386         bv_->text->SetCursorFromCoordinates(x, y);
1387         update(0);
1388 }
1389
1390
1391 void BufferView::Pimpl::setState()
1392 {
1393         if (!lyxrc.rtl_support)
1394                 return;
1395
1396         if (bv_->text->real_current_font.isRightToLeft() &&
1397             bv_->text->real_current_font.latex() != LyXFont::ON) {
1398                 if (owner_->getIntl()->primarykeymap)
1399                         owner_->getIntl()->KeyMapSec();
1400         } else {
1401                 if (!owner_->getIntl()->primarykeymap)
1402                         owner_->getIntl()->KeyMapPrim();
1403         }
1404 }
1405
1406
1407 void BufferView::Pimpl::insetSleep()
1408 {
1409         if (bv_->the_locking_inset && !bv_->inset_slept) {
1410                 bv_->the_locking_inset->GetCursorPos(bv_->slx, bv_->sly);
1411                 bv_->the_locking_inset->InsetUnlock(bv_);
1412                 bv_->inset_slept = true;
1413         }
1414 }
1415
1416
1417 void BufferView::Pimpl::insetWakeup()
1418 {
1419         if (bv_->the_locking_inset && bv_->inset_slept) {
1420                 bv_->the_locking_inset->Edit(bv_, bv_->slx, bv_->sly, 0);
1421                 bv_->inset_slept = false;
1422         }
1423 }
1424
1425
1426 void BufferView::Pimpl::insetUnlock()
1427 {
1428         if (bv_->the_locking_inset) {
1429                 if (!bv_->inset_slept) bv_->the_locking_inset->InsetUnlock(bv_);
1430                 bv_->the_locking_inset = 0;
1431                 bv_->text->FinishUndo();
1432                 bv_->inset_slept = false;
1433         }
1434 }
1435
1436
1437 bool BufferView::Pimpl::focus() const
1438 {
1439         return workarea->hasFocus();
1440 }
1441
1442
1443 void BufferView::Pimpl::focus(bool f)
1444 {
1445         if (f) workarea->setFocus();
1446 }
1447
1448
1449 bool BufferView::Pimpl::active() const
1450 {
1451         return workarea->active();
1452 }
1453
1454
1455 bool BufferView::Pimpl::belowMouse() const
1456 {
1457         return workarea->belowMouse();
1458 }
1459
1460
1461 void BufferView::Pimpl::showCursor()
1462 {
1463         if (screen)
1464                 screen->ShowCursor();
1465 }
1466
1467
1468 void BufferView::Pimpl::hideCursor()
1469 {
1470         if (screen)
1471                 screen->HideCursor();
1472 }
1473
1474
1475 void BufferView::Pimpl::toggleSelection(bool b)
1476 {
1477         if (screen)
1478                 screen->ToggleSelection(b);
1479 }
1480
1481
1482 void BufferView::Pimpl::toggleToggle()
1483 {
1484         if (screen)
1485                 screen->ToggleToggle();
1486 }
1487
1488
1489 void BufferView::Pimpl::center()
1490 {
1491         beforeChange();
1492         if (bv_->text->cursor.y > workarea->height() / 2) {
1493                 screen->Draw(bv_->text->cursor.y - workarea->height() / 2);
1494         } else {
1495                 screen->Draw(0);
1496         }
1497         update(0);
1498         redraw();
1499 }