src/BufferView.C

   1 // -*- C++ -*-
   2 /* This file is part of
   3  * ======================================================
   4  *
   5  *           LyX, The Document Processor
   6  *
   7  *           Copyright 1995 Matthias Ettrich
   8  *           Copyright 1995-1999 The LyX Team.
   9  *
  10  * ====================================================== */
  11
  12 #include <config.h>
  13
  14 #include <cstdlib>
  15 #include <csignal>
  16
  17 #include <unistd.h>
  18 #include <sys/wait.h>
  19
  20 #include "support/lstrings.h"
  21
  22 #ifdef __GNUG__
  23 #pragma implementation
  24 #endif
  25
  26 #include "commandtags.h"
  27 #include "BufferView.h"
  28 #include "bufferlist.h"
  29 #include "LyXView.h"
  30 #include "lyxfunc.h"
  31 #include "insets/lyxinset.h"
  32 #include "minibuffer.h"
  33 #include "lyxscreen.h"
  34 #include "up.xpm"
  35 #include "down.xpm"
  36 #include "debug.h"
  37 #include "lyxdraw.h"
  38 #include "lyx_gui_misc.h"
  39 #include "BackStack.h"
  40 #include "lyxtext.h"
  41 #include "lyx_cb.h"
  42 #include "gettext.h"
  43 #include "layout.h"
  44
  45 extern BufferList bufferlist;
  46 void sigchldhandler(pid_t pid, int * status);
  47
  48 extern void SetXtermCursor(Window win);
  49 extern bool input_prohibited;
  50 extern bool selection_possible;
  51 extern void BeforeChange();
  52 extern char ascii_type;
  53 extern int UnlockInset(UpdatableInset * inset);
  54 extern void ToggleFloat();
  55 extern void MenuPasteSelection(char at);
  56 extern InsetUpdateStruct * InsetUpdateList;
  57 extern void UpdateInsetUpdateList();
  58 extern void FreeUpdateTimer();
  59
  60 // This is _very_ temporary
  61 FL_OBJECT * figinset_canvas;
  62
  63 BufferView::BufferView(LyXView * o, int xpos, int ypos,
  64                        int width, int height)
  65         : owner_(o)
  66 {
  67         buffer_ = 0;
  68 #ifdef MOVE_TEXT
  69         text = 0;
  70 #endif
  71         screen = 0;
  72         work_area = 0;
  73         figinset_canvas = 0;
  74         scrollbar = 0;
  75         button_down = 0;
  76         button_up = 0;
  77         timer_cursor = 0;
  78         current_scrollbar_value = 0;
  79         create_view(xpos, ypos, width, height);
  80         // Activate the timer for the cursor
  81         fl_set_timer(timer_cursor, 0.4);
  82         fl_set_focus_object(owner_->getForm(), work_area);
  83         work_area_focus = true;
  84         lyx_focus = false;
  85 }
  86
  87
  88 BufferView::~BufferView()
  89 {
  90 #ifdef MOVE_TEXT
  91         delete text;
  92 #endif
  93 }
  94
  95
  96 void BufferView::buffer(Buffer * b)
  97 {
  98         lyxerr[Debug::INFO] << "Setting buffer in BufferView" << endl;
  99         if (buffer_) {
 100                 buffer_->InsetSleep();
 101                 buffer_->delUser(this);
 102 #ifdef MOVE_TEXT
 103                 delete text;
 104                 text = 0;
 105 #endif
 106         }
 107
 108         // Set current buffer
 109         buffer_ = b;
 110
 111         if (bufferlist.getState() == BufferList::CLOSING) return;
 112
 113         // Nuke old image
 114         if (screen)
 115                 delete screen;
 116         screen = 0;
 117
 118         // If we are closing the buffer, use the first buffer as current
 119         if (!buffer_) {
 120                 buffer_ = bufferlist.first();
 121         }
 122
 123         if (buffer_) {
 124                 lyxerr[Debug::INFO] << "  Buffer addr: " << buffer_ << endl;
 125                 buffer_->addUser(this);
 126                 owner_->getMenus()->showMenus();
 127                 // If we don't have a text object for this, we make one
 128 #ifdef MOVE_TEXT
 129                 if (text == 0)
 130                         resizeCurrentBuffer();
 131                 else {
 132                         updateScreen();
 133                         updateScrollbar();
 134                 }
 135 #else
 136                 if (buffer_->text == 0)
 137                         resizeCurrentBuffer();
 138                 else {
 139                         updateScreen();
 140                         updateScrollbar();
 141                 }
 142 #endif
 143                 screen->first = screen->TopCursorVisible();
 144                 redraw();
 145                 updateAllVisibleBufferRelatedPopups();
 146                 buffer_->InsetWakeup();
 147         } else {
 148                 lyxerr[Debug::INFO] << "  No Buffer!" << endl;
 149                 owner_->getMenus()->hideMenus();
 150                 updateScrollbar();
 151                 fl_redraw_object(work_area);
 152         }
 153         // should update layoutchoice even if we don't have a buffer.
 154         owner_->updateLayoutChoice();
 155         owner_->getMiniBuffer()->Init();
 156         owner_->updateWindowTitle();
 157 }
 158
 159
 160 void BufferView::updateScreen()
 161 {
 162         // Regenerate the screen.
 163         if (screen)
 164                 delete screen;
 165 #ifdef MOVE_TEXT
 166         screen = new LyXScreen(FL_ObjWin(work_area),
 167                                work_area->w,
 168                                work_area->h,
 169                                work_area->x,
 170                                work_area->y,
 171                                text);
 172 #else
 173         screen = new LyXScreen(FL_ObjWin(work_area),
 174                                work_area->w,
 175                                work_area->h,
 176                                work_area->x,
 177                                work_area->y,
 178                                buffer_->text);
 179 #endif
 180 }
 181
 182
 183 void BufferView::resize()
 184 {
 185         // This will resize the buffer. (Asger)
 186         if (buffer_)
 187                 resizeCurrentBuffer();
 188 }
 189
 190
 191 static bool lgb_hack = false;
 192
 193 void BufferView::redraw()
 194 {
 195         lyxerr[Debug::INFO] << "BufferView::redraw()" << endl;
 196         lgb_hack = true;
 197         fl_redraw_object(work_area);
 198         fl_redraw_object(scrollbar);
 199         fl_redraw_object(button_down);
 200         fl_redraw_object(button_up);
 201         lgb_hack = false;
 202 }
 203
 204
 205 void BufferView::fitCursor()
 206 {
 207         if (screen) screen->FitCursor();
 208 }
 209
 210
 211 void BufferView::update()
 212 {
 213         if (screen) screen->Update();
 214 }
 215
 216
 217 void BufferView::updateScrollbar()
 218 {
 219         /* If the text is smaller than the working area, the scrollbar
 220          * maximum must be the working area height. No scrolling will
 221          * be possible */
 222
 223         if (!buffer_) {
 224                 fl_set_slider_value(scrollbar, 0);
 225                 fl_set_slider_size(scrollbar, scrollbar->h);
 226                 return;
 227         }
 228
 229         static long max2 = 0;
 230         static long height2 = 0;
 231
 232         long cbth = 0;
 233         long cbsf = 0;
 234
 235 #ifdef MOVE_TEXT
 236         if (text)
 237                 cbth = text->height;
 238 #else
 239         if (buffer_->text)
 240                 cbth = buffer_->text->height;
 241 #endif
 242         if (screen)
 243                 cbsf = screen->first;
 244
 245         // check if anything has changed.
 246         if (max2 == cbth &&
 247             height2 == work_area->h &&
 248             current_scrollbar_value == cbsf)
 249                 return;       // no
 250
 251         max2 = cbth;
 252         height2 = work_area->h;
 253         current_scrollbar_value = cbsf;
 254
 255         if (cbth <= height2) { // text is smaller than screen
 256                 fl_set_slider_size(scrollbar, scrollbar->h);
 257                 return;
 258         }
 259
 260         long maximum_height = work_area->h * 3/4 + cbth;
 261         long value = cbsf;
 262
 263         // set the scrollbar
 264         double hfloat = work_area->h;
 265         double maxfloat = maximum_height;
 266
 267         fl_set_slider_value(scrollbar, value);
 268         fl_set_slider_bounds(scrollbar, 0,
 269                              maximum_height - work_area->h);
 270 #if FL_REVISION > 85
 271 #ifdef MOVE_TEXT
 272         double lineh = text->DefaultHeight();
 273 #else
 274         double lineh = buffer_->text->DefaultHeight();
 275 #endif
 276         fl_set_slider_increment(scrollbar, work_area->h-lineh, lineh);
 277 #endif
 278         if (maxfloat > 0){
 279                 if ((hfloat / maxfloat) * float(height2) < 3)
 280                         fl_set_slider_size(scrollbar,
 281                                            3 / float(height2));
 282                 else
 283                         fl_set_slider_size(scrollbar,
 284                                            hfloat / maxfloat);
 285         } else
 286                 fl_set_slider_size(scrollbar, hfloat);
 287         fl_set_slider_precision(scrollbar, 0);
 288 }
 289
 290
 291 void BufferView::redoCurrentBuffer()
 292 {
 293         lyxerr[Debug::INFO] << "BufferView::redoCurrentBuffer" << endl;
 294 #ifdef MOVE_TEXT
 295         if (buffer_ && text) {
 296                 resize();
 297                 owner_->updateLayoutChoice();
 298         }
 299 #else
 300         if (buffer_ && buffer_->text) {
 301                 resize();
 302                 owner_->updateLayoutChoice();
 303         }
 304 #endif
 305 }
 306
 307
 308 int BufferView::resizeCurrentBuffer()
 309 {
 310         lyxerr[Debug::INFO] << "resizeCurrentBuffer" << endl;
 311
 312         LyXParagraph * par = 0;
 313         LyXParagraph * selstartpar = 0;
 314         LyXParagraph * selendpar = 0;
 315         int pos = 0;
 316         int selstartpos = 0;
 317         int selendpos = 0;
 318         int selection = 0;
 319         int mark_set = 0;
 320
 321         ProhibitInput();
 322
 323         owner_->getMiniBuffer()->Set(_("Formatting document..."));
 324
 325 #ifdef MOVE_TEXT
 326         if (text) {
 327                 par = text->cursor.par;
 328                 pos = text->cursor.pos;
 329                 selstartpar = text->sel_start_cursor.par;
 330                 selstartpos = text->sel_start_cursor.pos;
 331                 selendpar = text->sel_end_cursor.par;
 332                 selendpos = text->sel_end_cursor.pos;
 333                 selection = text->selection;
 334                 mark_set = text->mark_set;
 335                 delete text;
 336         }
 337         text = new LyXText(work_area->w, buffer_);
 338 #else
 339         if (buffer_->text) {
 340                 par = buffer_->text->cursor.par;
 341                 pos = buffer_->text->cursor.pos;
 342                 selstartpar = buffer_->text->sel_start_cursor.par;
 343                 selstartpos = buffer_->text->sel_start_cursor.pos;
 344                 selendpar = buffer_->text->sel_end_cursor.par;
 345                 selendpos = buffer_->text->sel_end_cursor.pos;
 346                 selection = buffer_->text->selection;
 347                 mark_set = buffer_->text->mark_set;
 348                 delete buffer_->text;
 349         }
 350         buffer_->text = new LyXText(work_area->w, buffer_);
 351 #endif
 352
 353         updateScreen();
 354
 355 #ifdef MOVE_TEXT
 356         if (par) {
 357                 text->selection = true;
 358                 /* at this point just
 359                  * to avoid the Delete-
 360                  * Empty-Paragraph
 361                  * Mechanism when
 362                  * setting the cursor */
 363                 text->mark_set = mark_set;
 364                 if (selection) {
 365                         text->SetCursor(selstartpar, selstartpos);
 366                         text->sel_cursor = text->cursor;
 367                         text->SetCursor(selendpar, selendpos);
 368                         text->SetSelection();
 369                         text->SetCursor(par, pos);
 370                 } else {
 371                        text->SetCursor(par, pos);
 372                         text->sel_cursor = text->cursor;
 373                         text->selection = false;
 374                 }
 375         }
 376 #else
 377         if (par) {
 378                 buffer_->text->selection = true;
 379                 /* at this point just
 380                  * to avoid the Delete-
 381                  * Empty-Paragraph
 382                  * Mechanism when
 383                  * setting the cursor */
 384                 buffer_->text->mark_set = mark_set;
 385                 if (selection) {
 386                         buffer_->text->SetCursor(selstartpar, selstartpos);
 387                         buffer_->text->sel_cursor = buffer_->text->cursor;
 388                         buffer_->text->SetCursor(selendpar, selendpos);
 389                         buffer_->text->SetSelection();
 390                         buffer_->text->SetCursor(par, pos);
 391                 } else {
 392                         buffer_->text->SetCursor(par, pos);
 393                         buffer_->text->sel_cursor = buffer_->text->cursor;
 394                         buffer_->text->selection = false;
 395                 }
 396         }
 397 #endif
 398         screen->first = screen->TopCursorVisible(); /* this will scroll the
 399                                                      * screen such that the
 400                                                      * cursor becomes
 401                                                      * visible */
 402         updateScrollbar();
 403         redraw();
 404         owner_->getMiniBuffer()->Init();
 405         AllowInput();
 406
 407         // Now if the title form still exist kill it
 408         TimerCB(0, 0);
 409
 410         return 0;
 411 }
 412
 413
 414 void BufferView::gotoError()
 415 {
 416         if (!screen)
 417                 return;
 418
 419         screen->HideCursor();
 420         BeforeChange();
 421 #ifdef MOVE_TEXT
 422         update(-2);
 423 #else
 424         buffer_->update(-2);
 425 #endif
 426         LyXCursor tmp;
 427
 428 #ifdef MOVE_TEXT
 429         if (!text->GotoNextError()) {
 430                 if (text->cursor.pos
 431                     || text->cursor.par != text->FirstParagraph()) {
 432                         tmp = text->cursor;
 433                         text->cursor.par = text->FirstParagraph();
 434                         text->cursor.pos = 0;
 435                         if (!text->GotoNextError()) {
 436                                 text->cursor = tmp;
 437                                 owner_->getMiniBuffer()->Set(_("No more errors"));
 438                                 LyXBell();
 439                         }
 440                 } else {
 441                         owner_->getMiniBuffer()->Set(_("No more errors"));
 442                         LyXBell();
 443                 }
 444         }
 445         update(0);
 446         text->sel_cursor = text->cursor;
 447 #else
 448         if (!buffer_->text->GotoNextError()) {
 449                 if (buffer_->text->cursor.pos
 450                     || buffer_->text->cursor.par !=
 451                     buffer_->text->FirstParagraph()) {
 452                         tmp = buffer_->text->cursor;
 453                         buffer_->text->cursor.par =
 454                                 buffer_->text->FirstParagraph();
 455                         buffer_->text->cursor.pos = 0;
 456                         if (!buffer_->text->GotoNextError()) {
 457                                 buffer_->text->cursor = tmp;
 458                                 owner_->getMiniBuffer()->Set(_("No more errors"));
 459                                 LyXBell();
 460                         }
 461                 } else {
 462                         owner_->getMiniBuffer()->Set(_("No more errors"));
 463                         LyXBell();
 464                 }
 465         }
 466         buffer_->update(0);
 467         buffer_->text->sel_cursor =
 468                 buffer_->text->cursor;
 469 #endif
 470 }
 471
 472
 473 extern "C" {
 474 // Just a bunch of C wrappers around static members of BufferView
 475         void C_BufferView_UpCB(FL_OBJECT * ob, long buf)
 476         {
 477                 BufferView::UpCB(ob, buf);
 478         }
 479
 480
 481         void C_BufferView_DownCB(FL_OBJECT * ob, long buf)
 482         {
 483                 BufferView::DownCB(ob, buf);
 484         }
 485
 486
 487         void C_BufferView_ScrollCB(FL_OBJECT * ob, long buf)
 488         {
 489                 BufferView::ScrollCB(ob, buf);
 490         }
 491
 492
 493         void C_BufferView_CursorToggleCB(FL_OBJECT * ob, long buf)
 494         {
 495                 BufferView::CursorToggleCB(ob, buf);
 496         }
 497
 498
 499         int C_BufferView_work_area_handler(FL_OBJECT * ob, int event,
 500                                            FL_Coord, FL_Coord,
 501                                            int key, void * xev)
 502         {
 503                 return BufferView::work_area_handler(ob, event,
 504                                                      0, 0, key, xev);
 505         }
 506 }
 507
 508
 509 void BufferView::create_view(int xpos, int ypos, int width, int height)
 510 {
 511         FL_OBJECT * obj;
 512         const int bw = abs(fl_get_border_width());
 513
 514         // a hack for the figinsets (Matthias)
 515         // This one first, then it will probably be invisible. (Lgb)
 516         ::figinset_canvas = figinset_canvas = obj =
 517                 fl_add_canvas(FL_NORMAL_CANVAS,
 518                               xpos + 1,
 519                               ypos + 1, 1, 1, "");
 520         fl_set_object_boxtype(obj, FL_NO_BOX);
 521         fl_set_object_resize(obj, FL_RESIZE_ALL);
 522         fl_set_object_gravity(obj, NorthWestGravity, NorthWestGravity);
 523
 524         // a box
 525         obj = fl_add_box(FL_BORDER_BOX, xpos, ypos,
 526                          width - 15,
 527                          height, "");
 528         fl_set_object_resize(obj, FL_RESIZE_ALL);
 529         fl_set_object_gravity(obj, NorthWestGravity, SouthEastGravity);
 530
 531         // the free object
 532         work_area = obj = fl_add_free(FL_INPUT_FREE,
 533                                       xpos +bw, ypos+bw,
 534                                       width-15-2*bw /* scrollbarwidth */,
 535                                       height-2*bw, "",
 536                                       C_BufferView_work_area_handler);
 537         obj->wantkey = FL_KEY_TAB;
 538         obj->u_vdata = this; /* This is how we pass the BufferView
 539                                        to the work_area_handler. */
 540         fl_set_object_boxtype(obj, FL_DOWN_BOX);
 541         fl_set_object_resize(obj, FL_RESIZE_ALL);
 542         fl_set_object_gravity(obj, NorthWestGravity, SouthEastGravity);
 543
 544         //
 545         // THE SCROLLBAR
 546         //
 547
 548         // up - scrollbar button
 549 #if FL_REVISION > 85
 550         fl_set_border_width(-1);
 551 #else
 552         fl_set_border_width(-2); // to get visible feedback
 553 #endif
 554         button_up = obj = fl_add_pixmapbutton(FL_TOUCH_BUTTON,
 555                                               width-15+4*bw,
 556                                               ypos,
 557                                               15, 15, "");
 558         fl_set_object_boxtype(obj, FL_UP_BOX);
 559         fl_set_object_color(obj, FL_MCOL, FL_BLUE);
 560         fl_set_object_resize(obj, FL_RESIZE_ALL);
 561         fl_set_object_gravity(obj, NorthEastGravity, NorthEastGravity);
 562         fl_set_object_callback(obj, C_BufferView_UpCB, 0);
 563         obj->u_vdata = this;
 564         fl_set_pixmapbutton_data(obj, const_cast<char**>(up_xpm));
 565
 566 #if FL_REVISION > 85
 567         // Remove the blue feedback rectangle
 568         fl_set_pixmapbutton_focus_outline(obj, 0);
 569 #endif
 570
 571         // the scrollbar slider
 572         fl_set_border_width(-bw);
 573         scrollbar = obj = fl_add_slider(FL_VERT_SLIDER,
 574                                         width-15+4*bw,
 575                                         ypos + 15,
 576                                         15, height-30, "");
 577         fl_set_object_color(obj, FL_COL1, FL_MCOL);
 578         fl_set_object_boxtype(obj, FL_UP_BOX);
 579         fl_set_object_resize(obj, FL_RESIZE_ALL);
 580         fl_set_object_gravity(obj, NorthEastGravity, SouthEastGravity);
 581         fl_set_object_callback(obj, C_BufferView_ScrollCB, 0);
 582         obj->u_vdata = this;
 583
 584         // down - scrollbar button
 585 #if FL_REVISION > 85
 586         fl_set_border_width(-1);
 587 #else
 588         fl_set_border_width(-2); // to get visible feedback
 589 #endif
 590         button_down = obj = fl_add_pixmapbutton(FL_TOUCH_BUTTON,
 591                                                 width - 15 + 4 * bw,
 592                                                 ypos + height - 15,
 593                                                 15, 15, "");
 594         fl_set_object_boxtype(obj, FL_UP_BOX);
 595         fl_set_object_color(obj, FL_MCOL, FL_BLUE);
 596         fl_set_object_resize(obj, FL_RESIZE_ALL);
 597         fl_set_object_gravity(obj, SouthEastGravity, SouthEastGravity);
 598         fl_set_object_callback(obj, C_BufferView_DownCB, 0);
 599         obj->u_vdata = this;
 600         fl_set_pixmapbutton_data(obj, const_cast<char**>(down_xpm));
 601         fl_set_border_width(-bw);
 602
 603 #if FL_REVISION > 85
 604         // Remove the blue feedback rectangle
 605         fl_set_pixmapbutton_focus_outline(obj, 0);
 606 #endif
 607
 608         //
 609         // TIMERS
 610         //
 611
 612         // timer_cursor
 613         timer_cursor = obj = fl_add_timer(FL_HIDDEN_TIMER,
 614                                           0, 0, 0, 0, "Timer");
 615         fl_set_object_callback(obj, C_BufferView_CursorToggleCB, 0);
 616         obj->u_vdata = this;
 617 }
 618
 619
 620 // Callback for scrollbar up button
 621 void BufferView::UpCB(FL_OBJECT * ob, long)
 622 {
 623         BufferView * view = static_cast<BufferView*>(ob->u_vdata);
 624
 625         if (view->buffer_ == 0) return;
 626
 627         static long time = 0;
 628         XEvent const * ev2 = fl_last_event();
 629         if (ev2->type == ButtonPress || ev2->type == ButtonRelease)
 630                 time = 0;
 631         int button = fl_get_button_numb(ob);
 632         switch (button) {
 633         case 3:
 634                 view->ScrollUpOnePage(time++); break;
 635         case 2:
 636                 view->ScrollDownOnePage(time++); break;
 637         default:
 638                 view->ScrollUp(time++); break;
 639         }
 640 }
 641
 642
 643 static
 644 void waitForX()
 645 {
 646 #if 0
 647         static Window w = 0;
 648         static Atom a = 0;
 649         if (!a)
 650                 a = XInternAtom(fl_display, "WAIT_FOR_X", False);
 651         if (w == 0) {
 652                 int mask;
 653                 XSetWindowAttributes attr;
 654                 mask = CWOverrideRedirect;
 655                 attr.override_redirect = 1;
 656                 w = XCreateWindow(fl_display, fl_root,
 657                                   0, 0, 1, 1, 0, CopyFromParent,
 658                                   InputOnly, CopyFromParent, mask, &attr);
 659                 XSelectInput(fl_display, w, PropertyChangeMask);
 660                 XMapWindow(fl_display, w);
 661         }
 662         static XEvent ev;
 663         XChangeProperty(fl_display, w, a, a, 8,
 664                         PropModeAppend, reinterpret_cast<unsigned char*>(""), 0);
 665         XWindowEvent(fl_display, w, PropertyChangeMask, &ev);
 666 #endif
 667         XSync(fl_get_display(), 0);
 668 }
 669
 670
 671 // Callback for scrollbar slider
 672 void BufferView::ScrollCB(FL_OBJECT * ob, long)
 673 {
 674         BufferView * view = static_cast<BufferView*>(ob->u_vdata);
 675         extern bool cursor_follows_scrollbar;
 676
 677         if (view->buffer_ == 0) return;
 678
 679         view->current_scrollbar_value = long(fl_get_slider_value(ob));
 680         if (view->current_scrollbar_value < 0)
 681                 view->current_scrollbar_value = 0;
 682
 683         if (!view->screen)
 684                 return;
 685
 686         view->screen->Draw(view->current_scrollbar_value);
 687
 688         if (cursor_follows_scrollbar) {
 689 #ifdef MOVE_TEXT
 690                 LyXText * vbt = view->text;
 691 #else
 692                 LyXText * vbt = view->buffer_->text;
 693 #endif
 694                 int height = vbt->DefaultHeight();
 695
 696                 if (vbt->cursor.y < view->screen->first + height) {
 697                         vbt->SetCursorFromCoordinates(0,
 698                                                       view->screen->first +
 699                                                       height);
 700                 }
 701                 else if (vbt->cursor.y >
 702                          view->screen->first + view->work_area->h - height) {
 703                         vbt->SetCursorFromCoordinates(0,
 704                                                       view->screen->first +
 705                                                       view->work_area->h  -
 706                                                       height);
 707                 }
 708         }
 709         waitForX();
 710 }
 711
 712
 713 // Callback for scrollbar down button
 714 void BufferView::DownCB(FL_OBJECT * ob, long)
 715 {
 716         BufferView * view = static_cast<BufferView*>(ob->u_vdata);
 717
 718         if (view->buffer_ == 0) return;
 719
 720         XEvent const * ev2;
 721         static long time = 0;
 722         ev2 = fl_last_event();
 723         if (ev2->type == ButtonPress || ev2->type == ButtonRelease)
 724                 time = 0;
 725         int button = fl_get_button_numb(ob);
 726         switch (button) {
 727         case 2:
 728                 view->ScrollUpOnePage(time++); break;
 729         case 3:
 730                 view->ScrollDownOnePage(time++); break;
 731         default:
 732                 view->ScrollDown(time++); break;
 733         }
 734 }
 735
 736
 737 int BufferView::ScrollUp(long time)
 738 {
 739         if (buffer_ == 0) return 0;
 740         if (!screen)
 741                 return 0;
 742
 743         double value= fl_get_slider_value(scrollbar);
 744
 745         if (value == 0)
 746                 return 0;
 747
 748 #ifdef MOVE_TEXT
 749         float add_value =  (text->DefaultHeight()
 750                             + float(time) * float(time) * 0.125);
 751
 752         if (add_value > work_area->h)
 753                 add_value = float(work_area->h -
 754                                   text->DefaultHeight());
 755 #else
 756         float add_value =  (buffer_->text->DefaultHeight()
 757                             + float(time) * float(time) * 0.125);
 758
 759         if (add_value > work_area->h)
 760                 add_value = float(work_area->h -
 761                                   buffer_->text->DefaultHeight());
 762 #endif
 763
 764         value -= add_value;
 765
 766         if (value < 0)
 767                 value = 0;
 768
 769         fl_set_slider_value(scrollbar, value);
 770
 771         ScrollCB(scrollbar, 0);
 772         return 0;
 773 }
 774
 775
 776 int BufferView::ScrollDown(long time)
 777 {
 778         if (buffer_ == 0) return 0;
 779         if (!screen)
 780                 return 0;
 781
 782         double value= fl_get_slider_value(scrollbar);
 783         double min, max;
 784         fl_get_slider_bounds(scrollbar, &min, &max);
 785
 786         if (value == max)
 787                 return 0;
 788
 789 #ifdef MOVE_TEXT
 790         float add_value =  (text->DefaultHeight()
 791                             + float(time) * float(time) * 0.125);
 792
 793         if (add_value > work_area->h)
 794                 add_value = float(work_area->h -
 795                                   text->DefaultHeight());
 796 #else
 797         float add_value =  (buffer_->text->DefaultHeight()
 798                             + float(time) * float(time) * 0.125);
 799
 800         if (add_value > work_area->h)
 801                 add_value = float(work_area->h -
 802                                   buffer_->text->DefaultHeight());
 803 #endif
 804
 805         value += add_value;
 806
 807         if (value > max)
 808                 value = max;
 809
 810         fl_set_slider_value(scrollbar, value);
 811
 812         ScrollCB(scrollbar, 0);
 813         return 0;
 814 }
 815
 816
 817 void BufferView::ScrollUpOnePage(long /*time*/)
 818 {
 819         if (buffer_ == 0) return;
 820         if (!screen)
 821                 return;
 822
 823         long y = screen->first;
 824
 825         if (!y) return;
 826 #ifdef MOVE_TEXT
 827         Row * row = text->GetRowNearY(y);
 828 #else
 829         Row * row = buffer_->text->GetRowNearY(y);
 830 #endif
 831         y = y - work_area->h + row->height;
 832
 833         fl_set_slider_value(scrollbar, y);
 834
 835         ScrollCB(scrollbar, 0);
 836 }
 837
 838
 839 void BufferView::ScrollDownOnePage(long /*time*/)
 840 {
 841         if (buffer_ == 0) return;
 842         if (!screen)
 843                 return;
 844
 845         double min, max;
 846         fl_get_slider_bounds(scrollbar, &min, &max);
 847         long y = screen->first;
 848
 849 #ifdef MOVE_TEXT
 850         if (y > text->height - work_area->h)
 851                 return;
 852
 853         y += work_area->h;
 854         text->GetRowNearY(y);
 855 #else
 856         if (y > buffer_->text->height - work_area->h)
 857                 return;
 858
 859         y += work_area->h;
 860         buffer_->text->GetRowNearY(y);
 861 #endif
 862         fl_set_slider_value(scrollbar, y);
 863
 864         ScrollCB(scrollbar, 0);
 865 }
 866
 867
 868 int BufferView::work_area_handler(FL_OBJECT * ob, int event,
 869                                   FL_Coord, FL_Coord ,
 870                                   int /*key*/, void *xev)
 871 {
 872         static int x_old = -1;
 873         static int y_old = -1;
 874         static long scrollbar_value_old = -1;
 875
 876         XEvent * ev = static_cast<XEvent*>(xev);
 877         BufferView * view = static_cast<BufferView*>(ob->u_vdata);
 878
 879         // If we don't have a view yet; return
 880         if (!view || quitting) return 0;
 881
 882         switch (event){
 883         case FL_DRAW:
 884                 view->workAreaExpose();
 885                 break;
 886         case FL_PUSH:
 887                 view->WorkAreaButtonPress(ob, 0, 0, 0, ev, 0);
 888                 break;
 889         case FL_RELEASE:
 890                 view->WorkAreaButtonRelease(ob, 0, 0, 0, ev, 0);
 891                 break;
 892         case FL_MOUSE:
 893                 if (ev->xmotion.x != x_old ||
 894                     ev->xmotion.y != y_old ||
 895                     view->current_scrollbar_value != scrollbar_value_old) {
 896                         x_old = ev->xmotion.x;
 897                         y_old = ev->xmotion.y;
 898                         scrollbar_value_old = view->current_scrollbar_value;
 899                         view->WorkAreaMotionNotify(ob, 0, 0, 0, ev, 0);
 900                 }
 901                 break;
 902         // Done by the raw callback:
 903         //  case FL_KEYBOARD: WorkAreaKeyPress(ob, 0, 0, 0, ev, 0); break;
 904         case FL_FOCUS:
 905                 if (!view->owner_->getMiniBuffer()->shows_no_match)
 906                         view->owner_->getMiniBuffer()->Init();
 907                 view->owner_->getMiniBuffer()->shows_no_match = false;
 908                 view->work_area_focus = true;
 909                 fl_set_timer(view->timer_cursor, 0.4);
 910                 break;
 911         case FL_UNFOCUS:
 912                 view->owner_->getMiniBuffer()->ExecCommand();
 913                 view->work_area_focus = false;
 914                 break;
 915         case FL_ENTER:
 916                 SetXtermCursor(view->owner_->getForm()->window);
 917                 // reset the timer
 918                 view->lyx_focus = true;
 919                 fl_set_timer(view->timer_cursor, 0.4);
 920                 break;
 921         case FL_LEAVE:
 922                 if (!input_prohibited)
 923                         XUndefineCursor(fl_display,
 924                                         view->owner_->getForm()->window);
 925                 view->lyx_focus = false; // This is not an absolute truth
 926                 // but if it is not true, it will be changed within a blink
 927                 // of an eye. ... Not good enough... use regulare timeperiod
 928                 //fl_set_timer(view->timer_cursor, 0.01); // 0.1 sec blink
 929                 fl_set_timer(view->timer_cursor, 0.4); // 0.4 sec blink
 930                 break;
 931         case FL_DBLCLICK:
 932                 // select a word
 933                 if (view->buffer_ && !view->buffer_->the_locking_inset) {
 934                         if (view->screen && ev->xbutton.button == 1) {
 935                                 view->screen->HideCursor();
 936                                 view->screen->ToggleSelection();
 937 #ifdef MOVE_TEXT
 938                                 view->text->SelectWord();
 939 #else
 940                                 view->buffer_->text->SelectWord();
 941 #endif
 942                                 view->screen->ToggleSelection(false);
 943                                 /* This will fit the cursor on the screen
 944                                  * if necessary */
 945 #ifdef MOVE_TEXT
 946                                 view->update(0);
 947 #else
 948                                 view->buffer_->update(0);
 949 #endif
 950                         }
 951                 }
 952                 break;
 953         case FL_TRPLCLICK:
 954                 // select a line
 955                 if (view->buffer_ && view->screen && ev->xbutton.button == 1) {
 956                         view->screen->HideCursor();
 957                         view->screen->ToggleSelection();
 958 #ifdef MOVE_TEXT
 959                         view->text->CursorHome();
 960                         view->text->sel_cursor = view->text->cursor;
 961                         view->text->CursorEnd();
 962                         view->text->SetSelection();
 963 #else
 964                         view->buffer_->text->CursorHome();
 965                         view->buffer_->text->sel_cursor =
 966                                 view->buffer_->text->cursor;
 967                         view->buffer_->text->CursorEnd();
 968                         view->buffer_->text->SetSelection();
 969 #endif
 970                         view->screen->ToggleSelection(false);
 971                         /* This will fit the cursor on the screen
 972                          * if necessary */
 973 #ifdef MOVE_TEXT
 974                         view->update(0);
 975 #else
 976                         view->buffer_->update(0);
 977 #endif
 978                 }
 979                 break;
 980         case FL_OTHER:
 981                 view->WorkAreaSelectionNotify(ob,
 982                                               view->owner_->getForm()->window,
 983                                               0, 0, ev, 0);
 984                 break;
 985         }
 986         return 1;
 987 }
 988
 989 int BufferView::WorkAreaMotionNotify(FL_OBJECT *ob, Window,
 990                                      int /*w*/, int /*h*/,
 991                                      XEvent *ev, void */*d*/)
 992 {
 993
 994         if (buffer_ == 0) return 0;
 995         if (!screen) return 0;
 996
 997         // Check for inset locking
 998         if (buffer_->the_locking_inset) {
 999 #ifdef MOVE_TEXT
1000                 LyXCursor cursor = text->cursor;
1001 #else
1002                 LyXCursor cursor = buffer_->text->cursor;
1003 #endif
1004                 buffer_->the_locking_inset->
1005                         InsetMotionNotify(ev->xbutton.x - ob->x - cursor.x,
1006                                           ev->xbutton.y - ob->y -
1007                                           (cursor.y),
1008                                           ev->xbutton.state);
1009                 return 0;
1010         }
1011
1012         // Only use motion with button 1
1013         if (!ev->xmotion.state & Button1MotionMask)
1014                 return 0;
1015
1016         /* The selection possible is needed, that only motion events are
1017          * used, where the bottom press event was on the drawing area too */
1018         if (selection_possible) {
1019                 screen->HideCursor();
1020
1021 #ifdef MOVE_TEXT
1022                 text->SetCursorFromCoordinates(ev->xbutton.x - ob->x,
1023                                                ev->xbutton.y - ob->y +
1024                                                screen->first);
1025
1026                 if (!text->selection)
1027                         update(-3); // Maybe an empty line was deleted
1028
1029                 text->SetSelection();
1030 #else
1031                 buffer_->text->
1032                         SetCursorFromCoordinates(ev->xbutton.x - ob->x,
1033                                                  ev->xbutton.y - ob->y +
1034                                                  screen->first);
1035
1036                 if (!buffer_->text->selection)
1037                     buffer_->update(-3); // Maybe an empty line was deleted
1038
1039                 buffer_->text->SetSelection();
1040 #endif
1041                 screen->ToggleToggle();
1042                 if (screen->FitCursor())
1043                         updateScrollbar();
1044                 screen->ShowCursor();
1045         }
1046         return 0;
1047 }
1048
1049
1050 extern int bibitemMaxWidth(LyXFont const &);
1051
1052 #ifdef MOVE_TEXT
1053 // Single-click on work area
1054 int BufferView::WorkAreaButtonPress(FL_OBJECT *ob, Window,
1055                         int /*w*/, int /*h*/, XEvent *ev, void */*d*/)
1056 {
1057         last_click_x = -1;
1058         last_click_y = -1;
1059
1060         if (buffer_ == 0) return 0;
1061         if (!screen) return 0;
1062
1063         int const x = ev->xbutton.x - ob->x;
1064         int const y = ev->xbutton.y - ob->y;
1065         // If we hit an inset, we have the inset coordinates in these
1066         // and inset_hit points to the inset.  If we do not hit an
1067         // inset, inset_hit is 0, and inset_x == x, inset_y == y.
1068         int inset_x = x;
1069         int inset_y = y;
1070         Inset * inset_hit = checkInsetHit(inset_x, inset_y);
1071
1072         // ok ok, this is a hack.
1073         int button = ev->xbutton.button;
1074         if (button == 4 || button == 5) goto wheel;
1075
1076         {
1077
1078         if (buffer_->the_locking_inset) {
1079                 // We are in inset locking mode
1080
1081                 /* Check whether the inset was hit. If not reset mode,
1082                    otherwise give the event to the inset */
1083                 if (inset_hit != 0) {
1084                         buffer_->the_locking_inset->
1085                                 InsetButtonPress(inset_x, inset_y, button);
1086                         return 0;
1087                 } else {
1088                         UnlockInset(buffer_->the_locking_inset);
1089                 }
1090         }
1091
1092         selection_possible = true;
1093         screen->HideCursor();
1094
1095         // Right button mouse click on a table
1096         if (button == 3 &&
1097             (text->cursor.par->table ||
1098              text->MouseHitInTable(x, y + screen->first))) {
1099                 // Set the cursor to the press-position
1100                 text->SetCursorFromCoordinates(x, y + screen->first);
1101                 bool doit = true;
1102
1103                 // Only show the table popup if the hit is in the table, too
1104                 if (!text->HitInTable(text->cursor.row, x))
1105                         doit = false;
1106
1107                 // Hit above or below the table?
1108                 if (doit) {
1109                         if (!text->selection) {
1110                                 screen->ToggleSelection();
1111                                 text->ClearSelection();
1112                                 text->FullRebreak();
1113                                 screen->Update();
1114                                 updateScrollbar();
1115                         }
1116                         // Popup table popup when on a table.
1117                         // This is obviously temporary, since we should be
1118                         // able to
1119                         // popup various context-sensitive-menus with the
1120                         // the right mouse. So this should be done more
1121                         // general in the future. Matthias.
1122                         selection_possible = false;
1123                         owner_->getLyXFunc()->Dispatch(LFUN_LAYOUT_TABLE,
1124                                                        "true");
1125                         return 0;
1126                 }
1127         }
1128
1129         int screen_first = screen->first;
1130
1131         // Middle button press pastes if we have a selection
1132         bool paste_internally = false;
1133         if (button == 2  // && !buffer_->the_locking_inset
1134             && text->selection) {
1135                 owner_->getLyXFunc()->Dispatch(LFUN_COPY);
1136                 paste_internally = true;
1137         }
1138
1139         // Clear the selection
1140         screen->ToggleSelection();
1141         text->ClearSelection();
1142         text->FullRebreak();
1143         screen->Update();
1144         updateScrollbar();
1145
1146         // Single left click in math inset?
1147         if (inset_hit != 0 && inset_hit->Editable() == 2) {
1148                 // Highly editable inset, like math
1149                 selection_possible = false;
1150                 owner_->updateLayoutChoice();
1151                 owner_->getMiniBuffer()->Set(inset_hit->EditMessage());
1152                 inset_hit->Edit(inset_x, inset_y);
1153                 return 0;
1154         }
1155
1156         // Right click on a footnote flag opens float menu
1157         if (button == 3) {
1158                 selection_possible = false;
1159                 return 0;
1160         }
1161
1162         text->SetCursorFromCoordinates(x, y + screen_first);
1163         text->FinishUndo();
1164         text->sel_cursor = text->cursor;
1165         text->cursor.x_fix = text->cursor.x;
1166
1167         owner_->updateLayoutChoice();
1168         if (screen->FitCursor()){
1169                 updateScrollbar();
1170                 selection_possible = false;
1171         }
1172
1173         // Insert primary selection with middle mouse
1174         // if there is a local selection in the current buffer, insert this
1175         if (button == 2) { //  && !buffer_->the_locking_inset){
1176                 if (paste_internally)
1177                         owner_->getLyXFunc()->Dispatch(LFUN_PASTE);
1178                 else
1179                         owner_->getLyXFunc()->Dispatch(LFUN_PASTESELECTION,
1180                                                        "paragraph");
1181                 selection_possible = false;
1182                 return 0;
1183         }
1184         }
1185         goto out;
1186  wheel: {
1187         // I am not quite sure if this is the correct place to put this,
1188         // but it will not cause any harm.
1189         // Patch from Mark Huang (markman@mit.edu) to make LyX recognise
1190         // button 4 and 5. This enables LyX use use the scrollwhell on
1191         // certain mice for something useful. (Lgb)
1192         // Added wheel acceleration detection code. (Rvdk)
1193         static Time lastTime = 0;
1194         int diff = ev->xbutton.time - lastTime;
1195         int scroll = int(1.0 + (4.0/(abs(diff)+1.0))*200.0);
1196         switch (button) {
1197         case 4:
1198                 ScrollUp(scroll);
1199                 break;
1200         case 5:
1201                 ScrollDown(scroll);
1202                 break;
1203         }
1204         lastTime = ev->xbutton.time;
1205         return 0;
1206         }
1207  out:
1208         last_click_x = x;
1209         last_click_y = y;
1210
1211         return 0;
1212 }
1213 #else
1214 // Single-click on work area
1215 int BufferView::WorkAreaButtonPress(FL_OBJECT *ob, Window,
1216                         int /*w*/, int /*h*/, XEvent *ev, void */*d*/)
1217 {
1218         last_click_x = -1;
1219         last_click_y = -1;
1220
1221         if (buffer_ == 0) return 0;
1222         if (!screen) return 0;
1223
1224         int const x = ev->xbutton.x - ob->x;
1225         int const y = ev->xbutton.y - ob->y;
1226         // If we hit an inset, we have the inset coordinates in these
1227         // and inset_hit points to the inset.  If we do not hit an
1228         // inset, inset_hit is 0, and inset_x == x, inset_y == y.
1229         int inset_x = x;
1230         int inset_y = y;
1231         Inset * inset_hit = checkInsetHit(inset_x, inset_y);
1232
1233         // ok ok, this is a hack.
1234         int button = ev->xbutton.button;
1235         if (button == 4 || button == 5) goto wheel;
1236
1237         {
1238
1239         if (buffer_->the_locking_inset) {
1240                 // We are in inset locking mode
1241
1242                 /* Check whether the inset was hit. If not reset mode,
1243                    otherwise give the event to the inset */
1244                 if (inset_hit != 0) {
1245                         buffer_->the_locking_inset->
1246                                 InsetButtonPress(inset_x, inset_y, button);
1247                         return 0;
1248                 } else {
1249                         UnlockInset(buffer_->the_locking_inset);
1250                 }
1251         }
1252
1253         selection_possible = true;
1254         screen->HideCursor();
1255
1256         // Right button mouse click on a table
1257         if (button == 3 &&
1258             (buffer_->text->cursor.par->table ||
1259              buffer_->text->MouseHitInTable(x, y+screen->first))) {
1260                 // Set the cursor to the press-position
1261                 buffer_->text->SetCursorFromCoordinates(x, y + screen->first);
1262                 bool doit = true;
1263
1264                 // Only show the table popup if the hit is in the table, too
1265                 if (!buffer_->text->HitInTable(buffer_->text->cursor.row, x))
1266                         doit = false;
1267
1268                 // Hit above or below the table?
1269                 if (doit) {
1270                         if (!buffer_->text->selection) {
1271                                 screen->ToggleSelection();
1272                                 buffer_->text->ClearSelection();
1273                                 buffer_->text->FullRebreak();
1274                                 screen->Update();
1275                                 updateScrollbar();
1276                         }
1277                         // Popup table popup when on a table.
1278                         // This is obviously temporary, since we should be
1279                         // able to
1280                         // popup various context-sensitive-menus with the
1281                         // the right mouse. So this should be done more
1282                         // general in the future. Matthias.
1283                         selection_possible = false;
1284                         owner_->getLyXFunc()->Dispatch(LFUN_LAYOUT_TABLE,
1285                                                        "true");
1286                         return 0;
1287                 }
1288         }
1289
1290         int screen_first = screen->first;
1291
1292         // Middle button press pastes if we have a selection
1293         bool paste_internally = false;
1294         if (button == 2  // && !buffer_->the_locking_inset
1295             && buffer_->text->selection) {
1296                 owner_->getLyXFunc()->Dispatch(LFUN_COPY);
1297                 paste_internally = true;
1298         }
1299
1300         // Clear the selection
1301         screen->ToggleSelection();
1302         buffer_->text->ClearSelection();
1303         buffer_->text->FullRebreak();
1304         screen->Update();
1305         updateScrollbar();
1306
1307         // Single left click in math inset?
1308         if (inset_hit != 0 && inset_hit->Editable() == 2) {
1309                 // Highly editable inset, like math
1310                 selection_possible = false;
1311                 owner_->updateLayoutChoice();
1312                 owner_->getMiniBuffer()->Set(inset_hit->EditMessage());
1313                 inset_hit->Edit(inset_x, inset_y);
1314                 return 0;
1315         }
1316
1317         // Right click on a footnote flag opens float menu
1318         if (button == 3) {
1319                 selection_possible = false;
1320                 return 0;
1321         }
1322
1323         buffer_->text->SetCursorFromCoordinates(x, y + screen_first);
1324         buffer_->text->FinishUndo();
1325         buffer_->text->sel_cursor = buffer_->text->cursor;
1326         buffer_->text->cursor.x_fix = buffer_->text->cursor.x;
1327
1328         owner_->updateLayoutChoice();
1329         if (screen->FitCursor()){
1330                 updateScrollbar();
1331                 selection_possible = false;
1332         }
1333
1334         // Insert primary selection with middle mouse
1335         // if there is a local selection in the current buffer, insert this
1336         if (button == 2) { //  && !buffer_->the_locking_inset){
1337                 if (paste_internally)
1338                         owner_->getLyXFunc()->Dispatch(LFUN_PASTE);
1339                 else
1340                         owner_->getLyXFunc()->Dispatch(LFUN_PASTESELECTION,
1341                                                        "paragraph");
1342                 selection_possible = false;
1343                 return 0;
1344         }
1345         }
1346         goto out;
1347  wheel: {
1348         // I am not quite sure if this is the correct place to put this,
1349         // but it will not cause any harm.
1350         // Patch from Mark Huang (markman@mit.edu) to make LyX recognise
1351         // button 4 and 5. This enables LyX use use the scrollwhell on
1352         // certain mice for something useful. (Lgb)
1353         // Added wheel acceleration detection code. (Rvdk)
1354         static Time lastTime = 0;
1355         int diff = ev->xbutton.time - lastTime;
1356         int scroll = int(1.0 + (4.0/(abs(diff)+1.0))*200.0);
1357         switch (button) {
1358         case 4:
1359                 ScrollUp(scroll);
1360                 break;
1361         case 5:
1362                 ScrollDown(scroll);
1363                 break;
1364         }
1365         lastTime = ev->xbutton.time;
1366         return 0;
1367         }
1368  out:
1369         last_click_x = x;
1370         last_click_y = y;
1371
1372         return 0;
1373 }
1374 #endif
1375
1376 #ifdef MOVE_TEXT
1377 int BufferView::WorkAreaButtonRelease(FL_OBJECT * ob, Window ,
1378                           int /*w*/, int /*h*/, XEvent * ev, void * /*d*/)
1379 {
1380         if (buffer_ == 0 || screen == 0) return 0;
1381
1382         int const x = ev->xbutton.x - ob->x;
1383         int const y = ev->xbutton.y - ob->y;
1384
1385         // If we hit an inset, we have the inset coordinates in these
1386         // and inset_hit points to the inset.  If we do not hit an
1387         // inset, inset_hit is 0, and inset_x == x, inset_y == y.
1388         int inset_x = x;
1389         int inset_y = y;
1390         Inset * inset_hit = checkInsetHit(inset_x, inset_y);
1391
1392         if (buffer_->the_locking_inset) {
1393                 // We are in inset locking mode.
1394
1395                 /* LyX does a kind of work-area grabbing for insets.
1396                    Only a ButtonPress Event outside the inset will
1397                    force a InsetUnlock. */
1398                 buffer_->the_locking_inset->
1399                         InsetButtonRelease(inset_x, inset_y,
1400                                            ev->xbutton.button);
1401                 return 0;
1402         }
1403
1404         selection_possible = false;
1405         if (text->cursor.par->table) {
1406                 int cell = text->
1407                         NumberOfCell(text->cursor.par,
1408                                      text->cursor.pos);
1409                 if (text->cursor.par->table->IsContRow(cell) &&
1410                     text->cursor.par->table->
1411                     CellHasContRow(text->cursor.par->table->
1412                                    GetCellAbove(cell))<0) {
1413                         text->CursorUp();
1414                 }
1415         }
1416
1417         if (ev->xbutton.button >= 2)
1418                 return 0;
1419
1420         // Make sure that the press was not far from the release
1421         if ((abs(last_click_x - x) >= 5) ||
1422             (abs(last_click_y - y) >= 5)) {
1423                 return 0;
1424         }
1425
1426         // Did we hit an editable inset?
1427         if (inset_hit != 0) {
1428                 // Inset like error, notes and figures
1429                 selection_possible = false;
1430 #ifdef WITH_WARNINGS
1431 #warning fix this proper in 0.13
1432 #endif
1433                 // Following a ref shouldn't issue
1434                 // a push on the undo-stack
1435                 // anylonger, now that we have
1436                 // keybindings for following
1437                 // references and returning from
1438                 // references.  IMHO though, it
1439                 // should be the inset's own business
1440                 // to push or not push on the undo
1441                 // stack. They don't *have* to
1442                 // alter the document...
1443                 // (Joacim)
1444                 // ...or maybe the SetCursorParUndo()
1445                 // below isn't necessary at all anylonger?
1446                 if (inset_hit->LyxCode() == Inset::REF_CODE) {
1447                         text->SetCursorParUndo();
1448                 }
1449
1450                 owner_->getMiniBuffer()->Set(inset_hit->EditMessage());
1451                 inset_hit->Edit(inset_x, inset_y);
1452                 return 0;
1453         }
1454
1455         // check whether we want to open a float
1456         if (text) {
1457                 bool hit = false;
1458                 char c = ' ';
1459                 if (text->cursor.pos <
1460                     text->cursor.par->Last()) {
1461                         c = text->cursor.par->
1462                                 GetChar(text->cursor.pos);
1463                 }
1464                 if (c == LyXParagraph::META_FOOTNOTE
1465                     || c == LyXParagraph::META_MARGIN
1466                     || c == LyXParagraph::META_FIG
1467                     || c == LyXParagraph::META_TAB
1468                     || c == LyXParagraph::META_WIDE_FIG
1469                     || c == LyXParagraph::META_WIDE_TAB
1470                     || c == LyXParagraph::META_ALGORITHM){
1471                         hit = true;
1472                 } else if (text->cursor.pos - 1 >= 0) {
1473                         c = text->cursor.par->
1474                                 GetChar(text->cursor.pos - 1);
1475                         if (c == LyXParagraph::META_FOOTNOTE
1476                             || c == LyXParagraph::META_MARGIN
1477                             || c == LyXParagraph::META_FIG
1478                             || c == LyXParagraph::META_TAB
1479                             || c == LyXParagraph::META_WIDE_FIG
1480                             || c == LyXParagraph::META_WIDE_TAB
1481                             || c == LyXParagraph::META_ALGORITHM){
1482                                 // We are one step too far to the right
1483                                 text->CursorLeft();
1484                                 hit = true;
1485                         }
1486                 }
1487                 if (hit == true) {
1488                         ToggleFloat();
1489                         selection_possible = false;
1490                         return 0;
1491                 }
1492         }
1493
1494         // Do we want to close a float? (click on the float-label)
1495         if (text->cursor.row->par->footnoteflag ==
1496             LyXParagraph::OPEN_FOOTNOTE
1497             && text->cursor.pos == 0
1498             && text->cursor.row->previous &&
1499             text->cursor.row->previous->par->
1500             footnoteflag != LyXParagraph::OPEN_FOOTNOTE){
1501                 LyXFont font (LyXFont::ALL_SANE);
1502                 font.setSize(LyXFont::SIZE_SMALL);
1503
1504                 int box_x = 20; // LYX_PAPER_MARGIN;
1505                 box_x += font.textWidth("Mwide-figM", 10);
1506
1507                 int screen_first = screen->first;
1508
1509                 if (x < box_x
1510                     && y + screen_first > text->cursor.y -
1511                     text->cursor.row->baseline
1512                     && y + screen_first < text->cursor.y -
1513                     text->cursor.row->baseline
1514                     + font.maxAscent()*1.2 + font.maxDescent()*1.2) {
1515                         ToggleFloat();
1516                         selection_possible = false;
1517                         return 0;
1518                 }
1519         }
1520
1521         // Maybe we want to edit a bibitem ale970302
1522         if (text->cursor.par->bibkey && x < 20 +
1523             bibitemMaxWidth(textclasslist.TextClass(buffer_->
1524                                         params.textclass).defaultfont())) {
1525                 text->cursor.par->bibkey->Edit(0, 0);
1526         }
1527
1528         return 0;
1529 }
1530 #else
1531 int BufferView::WorkAreaButtonRelease(FL_OBJECT *ob, Window ,
1532                           int /*w*/, int /*h*/, XEvent *ev, void */*d*/)
1533 {
1534         if (buffer_ == 0 || screen == 0) return 0;
1535
1536         int const x = ev->xbutton.x - ob->x;
1537         int const y = ev->xbutton.y - ob->y;
1538
1539         // If we hit an inset, we have the inset coordinates in these
1540         // and inset_hit points to the inset.  If we do not hit an
1541         // inset, inset_hit is 0, and inset_x == x, inset_y == y.
1542         int inset_x = x;
1543         int inset_y = y;
1544         Inset * inset_hit = checkInsetHit(inset_x, inset_y);
1545
1546         if (buffer_->the_locking_inset) {
1547                 // We are in inset locking mode.
1548
1549                 /* LyX does a kind of work-area grabbing for insets.
1550                    Only a ButtonPress Event outside the inset will
1551                    force a InsetUnlock. */
1552                 buffer_->the_locking_inset->
1553                         InsetButtonRelease(inset_x, inset_y,
1554                                            ev->xbutton.button);
1555                 return 0;
1556         }
1557
1558         selection_possible = false;
1559         if (buffer_->text->cursor.par->table) {
1560                 int cell = buffer_->text->
1561                         NumberOfCell(buffer_->text->cursor.par,
1562                                      buffer_->text->cursor.pos);
1563                 if (buffer_->text->cursor.par->table->IsContRow(cell) &&
1564                     buffer_->text->cursor.par->table->
1565                     CellHasContRow(buffer_->text->cursor.par->table->
1566                                    GetCellAbove(cell))<0) {
1567                         buffer_->text->CursorUp();
1568                 }
1569         }
1570
1571         if (ev->xbutton.button >= 2)
1572                 return 0;
1573
1574         // Make sure that the press was not far from the release
1575         if ((abs(last_click_x - x) >= 5) ||
1576             (abs(last_click_y - y) >= 5)) {
1577                 return 0;
1578         }
1579
1580         // Did we hit an editable inset?
1581         if (inset_hit != 0) {
1582                 // Inset like error, notes and figures
1583                 selection_possible = false;
1584 #ifdef WITH_WARNINGS
1585 #warning fix this proper in 0.13
1586 #endif
1587                 // Following a ref shouldn't issue
1588                 // a push on the undo-stack
1589                 // anylonger, now that we have
1590                 // keybindings for following
1591                 // references and returning from
1592                 // references.  IMHO though, it
1593                 // should be the inset's own business
1594                 // to push or not push on the undo
1595                 // stack. They don't *have* to
1596                 // alter the document...
1597                 // (Joacim)
1598                 // ...or maybe the SetCursorParUndo()
1599                 // below isn't necessary at all anylonger?
1600                 if (inset_hit->LyxCode() == Inset::REF_CODE) {
1601                         buffer_->text->SetCursorParUndo();
1602                 }
1603
1604                 owner_->getMiniBuffer()->Set(inset_hit->EditMessage());
1605                 inset_hit->Edit(inset_x, inset_y);
1606                 return 0;
1607         }
1608
1609         // check whether we want to open a float
1610         if (buffer_->text) {
1611                 bool hit = false;
1612                 char c = ' ';
1613                 if (buffer_->text->cursor.pos <
1614                     buffer_->text->cursor.par->Last()) {
1615                         c = buffer_->text->cursor.par->
1616                                 GetChar(buffer_->text->cursor.pos);
1617                 }
1618                 if (c == LyXParagraph::META_FOOTNOTE
1619                     || c == LyXParagraph::META_MARGIN
1620                     || c == LyXParagraph::META_FIG
1621                     || c == LyXParagraph::META_TAB
1622                     || c == LyXParagraph::META_WIDE_FIG
1623                     || c == LyXParagraph::META_WIDE_TAB
1624                     || c == LyXParagraph::META_ALGORITHM){
1625                         hit = true;
1626                 } else if (buffer_->text->cursor.pos - 1 >= 0) {
1627                         c = buffer_->text->cursor.par->
1628                                 GetChar(buffer_->text->cursor.pos - 1);
1629                         if (c == LyXParagraph::META_FOOTNOTE
1630                             || c == LyXParagraph::META_MARGIN
1631                             || c == LyXParagraph::META_FIG
1632                             || c == LyXParagraph::META_TAB
1633                             || c == LyXParagraph::META_WIDE_FIG
1634                             || c == LyXParagraph::META_WIDE_TAB
1635                             || c == LyXParagraph::META_ALGORITHM){
1636                                 // We are one step too far to the right
1637                                 buffer_->text->CursorLeft();
1638                                 hit = true;
1639                         }
1640                 }
1641                 if (hit == true) {
1642                         ToggleFloat();
1643                         selection_possible = false;
1644                         return 0;
1645                 }
1646         }
1647
1648         // Do we want to close a float? (click on the float-label)
1649         if (buffer_->text->cursor.row->par->footnoteflag ==
1650             LyXParagraph::OPEN_FOOTNOTE
1651             && buffer_->text->cursor.pos == 0
1652             && buffer_->text->cursor.row->previous &&
1653             buffer_->text->cursor.row->previous->par->
1654             footnoteflag != LyXParagraph::OPEN_FOOTNOTE){
1655                 LyXFont font (LyXFont::ALL_SANE);
1656                 font.setSize(LyXFont::SIZE_SMALL);
1657
1658                 int box_x = 20; // LYX_PAPER_MARGIN;
1659                 box_x += font.textWidth("Mwide-figM", 10);
1660
1661                 int screen_first = screen->first;
1662
1663                 if (x < box_x
1664                     && y + screen_first > buffer_->text->cursor.y -
1665                     buffer_->text->cursor.row->baseline
1666                     && y + screen_first < buffer_->text->cursor.y -
1667                     buffer_->text->cursor.row->baseline
1668                     + font.maxAscent()*1.2 + font.maxDescent()*1.2) {
1669                         ToggleFloat();
1670                         selection_possible = false;
1671                         return 0;
1672                 }
1673         }
1674
1675         // Maybe we want to edit a bibitem ale970302
1676         if (buffer_->text->cursor.par->bibkey && x < 20 +
1677             bibitemMaxWidth(textclasslist.TextClass(buffer_->
1678                                         params.textclass).defaultfont())) {
1679                 buffer_->text->cursor.par->bibkey->Edit(0, 0);
1680         }
1681
1682         return 0;
1683 }
1684 #endif
1685
1686 /*
1687  * Returns an inset if inset was hit. 0 otherwise.
1688  * If hit, the coordinates are changed relative to the inset.
1689  * Otherwise coordinates are not changed, and false is returned.
1690  */
1691 #ifdef MOVE_TEXT
1692 Inset * BufferView::checkInsetHit(int & x, int & y)
1693 {
1694         if (!getScreen())
1695                 return 0;
1696
1697         int y_tmp = y + getScreen()->first;
1698
1699         LyXCursor cursor = text->cursor;
1700         if (cursor.pos < cursor.par->Last()
1701             && cursor.par->GetChar(cursor.pos) == LyXParagraph::META_INSET
1702             && cursor.par->GetInset(cursor.pos)
1703             && cursor.par->GetInset(cursor.pos)->Editable()) {
1704
1705                 // Check whether the inset really was hit
1706                 Inset * tmpinset = cursor.par->GetInset(cursor.pos);
1707                 LyXFont font = text->GetFont(cursor.par, cursor.pos);
1708                 if (x > cursor.x
1709                     && x < cursor.x + tmpinset->Width(font)
1710                     && y_tmp > cursor.y - tmpinset->Ascent(font)
1711                     && y_tmp < cursor.y + tmpinset->Descent(font)) {
1712                         x = x - cursor.x;
1713                         // The origin of an inset is on the baseline
1714                         y = y_tmp - (cursor.y);
1715                         return tmpinset;
1716                 }
1717         } else if (cursor.pos - 1 >= 0
1718                    && cursor.par->GetChar(cursor.pos - 1) == LyXParagraph::META_INSET
1719                    && cursor.par->GetInset(cursor.pos - 1)
1720                    && cursor.par->GetInset(cursor.pos - 1)->Editable()) {
1721                 text->CursorLeft();
1722                 Inset * result = checkInsetHit(x, y);
1723                 if (result == 0) {
1724                         text->CursorRight();
1725                         return 0;
1726                 } else {
1727                         return result;
1728                 }
1729         }
1730         return 0;
1731 }
1732 #else
1733 Inset * BufferView::checkInsetHit(int & x, int & y)
1734 {
1735         if (!getScreen())
1736                 return 0;
1737
1738         int y_tmp = y + getScreen()->first;
1739
1740         LyXCursor cursor = buffer_->text->cursor;
1741         if (cursor.pos < cursor.par->Last()
1742             && cursor.par->GetChar(cursor.pos) == LyXParagraph::META_INSET
1743             && cursor.par->GetInset(cursor.pos)
1744             && cursor.par->GetInset(cursor.pos)->Editable()) {
1745
1746                 // Check whether the inset really was hit
1747                 Inset * tmpinset = cursor.par->GetInset(cursor.pos);
1748                 LyXFont font = buffer_->text->GetFont(cursor.par, cursor.pos);
1749                 if (x > cursor.x
1750                     && x < cursor.x + tmpinset->Width(font)
1751                     && y_tmp > cursor.y - tmpinset->Ascent(font)
1752                     && y_tmp < cursor.y + tmpinset->Descent(font)) {
1753                         x = x - cursor.x;
1754                         // The origin of an inset is on the baseline
1755                         y = y_tmp - (cursor.y);
1756                         return tmpinset;
1757                 }
1758         } else if (cursor.pos - 1 >= 0
1759                    && cursor.par->GetChar(cursor.pos - 1) == LyXParagraph::META_INSET
1760                    && cursor.par->GetInset(cursor.pos - 1)
1761                    && cursor.par->GetInset(cursor.pos - 1)->Editable()) {
1762                 buffer_->text->CursorLeft();
1763                 Inset * result = checkInsetHit(x, y);
1764                 if (result == 0) {
1765                         buffer_->text->CursorRight();
1766                         return 0;
1767                 } else {
1768                         return result;
1769                 }
1770         }
1771         return 0;
1772 }
1773 #endif
1774
1775 int BufferView::workAreaExpose()
1776 {
1777         if (!work_area || !work_area->form->visible)
1778                 return 1;
1779
1780         // this is a hack to ensure that we only call this through
1781         // BufferView::redraw().
1782         if (!lgb_hack) {
1783                 redraw();
1784         }
1785
1786         static int work_area_width = work_area->w;
1787         static int work_area_height = work_area->h;
1788
1789         bool widthChange = work_area->w != work_area_width;
1790         bool heightChange = work_area->h != work_area_height;
1791
1792         // update from work area
1793         work_area_width = work_area->w;
1794         work_area_height = work_area->h;
1795         if (buffer_ != 0) {
1796                 if (widthChange) {
1797                         // All buffers need a resize
1798                         bufferlist.resize();
1799                 } else if (heightChange) {
1800                         // Rebuild image of current screen
1801                         updateScreen();
1802                         // fitCursor() ensures we don't jump back
1803                         // to the start of the document on vertical
1804                         // resize
1805                         fitCursor();
1806
1807                         // The main window size has changed, repaint most stuff
1808                         redraw();
1809                         // ...including the minibuffer
1810                         owner_->getMiniBuffer()->Init();
1811
1812                 } else if (screen) screen->Redraw();
1813         } else {
1814                 // Grey box when we don't have a buffer
1815                 fl_winset(FL_ObjWin(work_area));
1816                 fl_rectangle(1, work_area->x, work_area->y,
1817                              work_area->w, work_area->h, FL_GRAY63);
1818         }
1819
1820         // always make sure that the scrollbar is sane.
1821         updateScrollbar();
1822         owner_->updateLayoutChoice();
1823         return 1;
1824 }
1825
1826
1827 // Callback for cursor timer
1828 void BufferView::CursorToggleCB(FL_OBJECT * ob, long)
1829 {
1830         BufferView *view = static_cast<BufferView*>(ob->u_vdata);
1831
1832         /* quite a nice place for asyncron Inset updating, isn't it? */
1833         // actually no! This is run even if no buffer exist... so (Lgb)
1834         if (view && !view->buffer_) {
1835                 goto set_timer_and_return;
1836         }
1837
1838         // NOTE:
1839         // On my quest to solve the gs rendre hangups I am now
1840         // disabling the SIGHUP completely, and will do a wait
1841         // now and then instead. If the guess that xforms somehow
1842         // destroys something is true, this is likely (hopefully)
1843         // to solve the problem...at least I hope so. Lgb
1844
1845         // ...Ok this seems to work...at least it does not make things
1846         // worse so far. However I still see gs processes that hangs.
1847         // I would really like to know _why_ they are hanging. Anyway
1848         // the solution without the SIGCHLD handler seems to be easier
1849         // to debug.
1850
1851         // When attaching gdb to a a running gs that hangs it shows
1852         // that it is waiting for input(?) Is it possible for us to
1853         // provide that input somehow? Or figure what it is expecing
1854         // to read?
1855
1856         // One solution is to, after some time, look if there are some
1857         // old gs processes still running and if there are: kill them
1858         // and re render.
1859
1860         // Another solution is to provide the user an option to rerender
1861         // a picture. This would, for the picture in question, check if
1862         // there is a gs running for it, if so kill it, and start a new
1863         // rendering process.
1864
1865         // these comments posted to lyx@via
1866         {
1867         int status = 1;
1868         int pid = waitpid(static_cast<pid_t>(0), &status, WNOHANG);
1869         if (pid == -1) // error find out what is wrong
1870                 ; // ignore it for now.
1871         else if (pid > 0)
1872                 sigchldhandler(pid, &status);
1873         }
1874         if (InsetUpdateList)
1875                 UpdateInsetUpdateList();
1876
1877         if (view && !view->screen){
1878                 goto set_timer_and_return;
1879         }
1880
1881         if (view->lyx_focus && view->work_area_focus) {
1882                 if (!view->buffer_->the_locking_inset){
1883                         view->screen->CursorToggle();
1884                 } else {
1885                         view->buffer_->the_locking_inset->
1886                                 ToggleInsetCursor();
1887                 }
1888                 goto set_timer_and_return;
1889         } else {
1890                 // Make sure that the cursor is visible.
1891                 if (!view->buffer_->the_locking_inset){
1892                         view->screen->ShowCursor();
1893                 } else {
1894                         if (!view->buffer_->the_locking_inset->isCursorVisible())
1895                                 view->buffer_->the_locking_inset->
1896                                         ToggleInsetCursor();
1897                 }
1898
1899                 // This is only run when work_area_focus or lyx_focus is false.
1900                 Window tmpwin;
1901                 int tmp;
1902                 XGetInputFocus(fl_display, &tmpwin, &tmp);
1903                 if (lyxerr.debugging()) {
1904                         lyxerr << "tmpwin: " << tmpwin
1905                                << "\nwindow: " << view->owner_->getForm()->window
1906                                << "\nwork_area_focus: " << view->work_area_focus
1907                                << "\nlyx_focus      : " << view->lyx_focus
1908                                << endl;
1909                 }
1910                 if (tmpwin != view->owner_->getForm()->window) {
1911                         view->lyx_focus = false;
1912                         goto skip_timer;
1913                 } else {
1914                         view->lyx_focus = true;
1915                         if (!view->work_area_focus)
1916                                 goto skip_timer;
1917                         else
1918                                 goto set_timer_and_return;
1919                 }
1920         }
1921
1922   set_timer_and_return:
1923         fl_set_timer(ob, 0.4);
1924   skip_timer:
1925         return;
1926 }
1927
1928
1929 int BufferView::WorkAreaSelectionNotify(FL_OBJECT *, Window win,
1930                             int /*w*/, int /*h*/, XEvent *event, void */*d*/)
1931 {
1932         if (buffer_ == 0) return 0;
1933         if (event->type != SelectionNotify)
1934                 return 0;
1935
1936         Atom tmpatom;
1937         unsigned long ul1;
1938         unsigned long ul2;
1939         unsigned char * uc = 0;
1940         int tmpint;
1941         screen->HideCursor();
1942         BeforeChange();
1943         if (event->xselection.type == XA_STRING
1944             && event->xselection.property) {
1945
1946                 if (XGetWindowProperty(
1947                         fl_display            /* display */,
1948                         win /* w */,
1949                         event->xselection.property        /* property */,
1950                         0                /* long_offset */,
1951                         0                /* long_length */,
1952                         false                /* delete */,
1953                         XA_STRING                /* req_type */,
1954                         &tmpatom               /* actual_type_return */,
1955                         &tmpint                /* actual_format_return */,
1956                         &ul1      /* nitems_return */,
1957                         &ul2      /* bytes_after_return */,
1958                         &uc     /* prop_return */
1959                         ) != Success) {
1960                         return 0;
1961                 }
1962                 XFlush(fl_display);
1963
1964                 if (uc){
1965                         free(uc);
1966                         uc = 0;
1967                 }
1968
1969                 if (XGetWindowProperty(
1970                         fl_display           /* display */,
1971                         win              /* w */,
1972                         event->xselection.property           /* property */,
1973                         0                /* long_offset */,
1974                         ul2/4+1                /* long_length */,
1975                         True                /* delete */,
1976                         XA_STRING                /* req_type */,
1977                         &tmpatom               /* actual_type_return */,
1978                         &tmpint                /* actual_format_return */,
1979                         &ul1      /* nitems_return */,
1980                         &ul2      /* bytes_after_return */,
1981                         &uc     /* prop_return */
1982                         ) != Success) {
1983                         return 0;
1984                 }
1985                 XFlush(fl_display);
1986
1987                 if (uc){
1988 #ifdef MOVE_TEXT
1989                         if (!ascii_type) {
1990                                 text->InsertStringA(reinterpret_cast<char*>(uc));
1991                         } else {
1992                                 text->InsertStringB(reinterpret_cast<char*>(uc));
1993                         }
1994 #else
1995                         if (!ascii_type) {
1996                                 buffer_->text->
1997                                         InsertStringA(reinterpret_cast<char*>(uc));
1998                         } else {
1999                                 buffer_->text->
2000                                         InsertStringB(reinterpret_cast<char*>(uc));
2001                         }
2002 #endif
2003                         free(uc);
2004                         uc = 0;
2005                 }
2006
2007 #ifdef MOVE_TEXT
2008                 update(1);
2009 #else
2010                 buffer_->update(1);
2011 #endif
2012         }
2013         return 0;
2014 }
2015
2016
2017 #ifdef MOVE_TEXT
2018 void BufferView::cursorPrevious()
2019 {
2020         if (!text->cursor.row->previous) return;
2021
2022         long y = getScreen()->first;
2023         Row * cursorrow = text->cursor.row;
2024         text->SetCursorFromCoordinates(text->cursor.x_fix, y);
2025         text->FinishUndo();
2026         // this is to allow jumping over large insets
2027         if ((cursorrow == text->cursor.row))
2028                 text->CursorUp();
2029
2030         if (text->cursor.row->height < work_area->h)
2031                 getScreen()->Draw(text->cursor.y
2032                                   - text->cursor.row->baseline
2033                                   + text->cursor.row->height
2034                                   - work_area->h +1 );
2035 }
2036
2037
2038 void BufferView::cursorNext()
2039 {
2040         if (!text->cursor.row->next) return;
2041
2042         long y = getScreen()->first;
2043         text->GetRowNearY(y);
2044         Row * cursorrow = text->cursor.row;
2045         text->SetCursorFromCoordinates(text->cursor.x_fix, y + work_area->h);
2046         text->FinishUndo();
2047         /* this is to allow jumping over large insets */
2048         if ((cursorrow == text->cursor.row))
2049                 text->CursorDown();
2050
2051         if (text->cursor.row->height < work_area->h)
2052                 getScreen()->Draw(text->cursor.y
2053                                   - text->cursor.row->baseline);
2054 }
2055 #else
2056 void BufferView::cursorPrevious()
2057 {
2058         if (!buffer()->text->cursor.row->previous) return;
2059
2060         long y = getScreen()->first;
2061         Row * cursorrow = buffer()->text->cursor.row;
2062         buffer()->text->
2063           SetCursorFromCoordinates(buffer()->text->
2064                                    cursor.x_fix,
2065                                    y);
2066         buffer()->text->FinishUndo();
2067         // this is to allow jumping over large insets
2068         if ((cursorrow == buffer()->text->cursor.row))
2069           buffer()->text->CursorUp();
2070
2071         if (buffer()->text->cursor.row->height < work_area->h)
2072           getScreen()->Draw(buffer()->text->cursor.y
2073                             - buffer()->text->cursor.row->baseline
2074                             + buffer()->text->cursor.row->height
2075                             - work_area->h +1 );
2076 }
2077
2078
2079 void BufferView::cursorNext()
2080 {
2081         if (!buffer()->text->cursor.row->next) return;
2082
2083         long y = getScreen()->first;
2084         buffer()->text->GetRowNearY(y);
2085         Row * cursorrow = buffer()->text->cursor.row;
2086         buffer()->text->
2087                 SetCursorFromCoordinates(buffer()->text->
2088                                          cursor.x_fix,
2089                                          y + work_area->h);
2090         buffer()->text->FinishUndo();
2091         /* this is to allow jumping over large insets */
2092         if ((cursorrow == buffer()->text->cursor.row))
2093           buffer()->text->CursorDown();
2094
2095         if (buffer()->text->cursor.row->height < work_area->h)
2096           getScreen()->Draw(buffer()->text->cursor.y
2097                             - buffer()->text->cursor.row->baseline);
2098 }
2099 #endif
2100
2101 bool BufferView::available() const
2102 {
2103 #ifdef MOVE_TEXT
2104         if (buffer_ && text) return true;
2105 #else
2106         if (buffer_ && buffer_->text) return true;
2107 #endif
2108         return false;
2109 }
2110
2111
2112 void BufferView::savePosition()
2113 {
2114 #ifdef MOVE_TEXT
2115         backstack.push(buffer()->fileName(),
2116                         text->cursor.x,
2117                         text->cursor.y);
2118 #else
2119         backstack.push(buffer()->getFileName(),
2120                         buffer()->text->cursor.x,
2121                         buffer()->text->cursor.y);
2122 #endif
2123 }
2124
2125
2126 void BufferView::restorePosition()
2127 {
2128         if (backstack.empty()) return;
2129
2130         int  x, y;
2131         string fname = backstack.pop(&x, &y);
2132
2133         BeforeChange();
2134         Buffer * b = (bufferlist.exists(fname)) ? bufferlist.getBuffer(fname):
2135                 bufferlist.loadLyXFile(fname); // don't ask, just load it
2136         buffer(b);
2137 #ifdef MOVE_TEXT
2138         text->SetCursorFromCoordinates(x, y);
2139         update(0);
2140 #else
2141         buffer()->text->SetCursorFromCoordinates(x, y);
2142         buffer()->update(0);
2143 #endif
2144 }
2145
2146
2147 #ifdef MOVE_TEXT
2148 // candidate for move to BufferView
2149 void BufferView::update(signed char f)
2150 {
2151         owner()->updateLayoutChoice();
2152
2153         if (!text->selection && f > -3)
2154                 text->sel_cursor = text->cursor;
2155
2156         FreeUpdateTimer();
2157         text->FullRebreak();
2158
2159         update();
2160
2161         if (f != 3 && f != -3) {
2162                 fitCursor();
2163                 updateScrollbar();
2164         }
2165
2166         if (f == 1 || f == -1) {
2167                 if (buffer()->isLyxClean()) {
2168                         buffer()->markDirty();
2169                         owner()->getMiniBuffer()->setTimer(4);
2170                 } else {
2171                         buffer()->markDirty();
2172                 }
2173         }
2174 }
2175 #endif