src/screen.C

   1 /* This file is part of
   2 * ======================================================
   3 *
   4 *           LyX, The Document Processor
   5 *
   6 *           Copyright 1995 Matthias Ettrich
   7 *           Copyright 1995-1998 The LyX Team
   8 *
   9 * ====================================================== */
  10
  11 #include <config.h>
  12
  13 #ifdef __GNUG__
  14 #pragma implementation "lyxscreen.h"
  15 #endif
  16
  17 #include "lyxscreen.h"
  18 #include "lyxtext.h"
  19 #include "lyxrow.h"
  20 #include "BufferView.h"
  21 #include "Painter.h"
  22 #ifndef USE_PAINTER
  23 #include "lyxdraw.h"
  24 #endif
  25
  26 #ifdef MONO
  27 extern int mono_video;
  28 extern int fast_selection;
  29 #endif
  30
  31 #ifdef USE_PAINTER
  32 static
  33 GC createGC()
  34 {
  35         XGCValues val;
  36         val.foreground = BlackPixel(fl_display,
  37                                     DefaultScreen(fl_display));
  38
  39         val.function=GXcopy;
  40         val.graphics_exposures = false;
  41         val.line_style = LineSolid;
  42         val.line_width = 0;
  43         return XCreateGC(fl_display, RootWindow(fl_display, 0),
  44                          GCForeground | GCFunction | GCGraphicsExposures
  45                          | GCLineWidth | GCLineStyle , &val);
  46 }
  47 #endif
  48
  49
  50 // Constructor
  51 LyXScreen::LyXScreen(BufferView * o, Window window,
  52                      Pixmap p,
  53                      Dimension width,
  54                      Dimension height,
  55                      Dimension offset_x,
  56                      Dimension offset_y,
  57                      LyXText *text_ptr)
  58         : owner(o), text(text_ptr), _window(window),
  59         _width(width), _height(height),
  60         _offset_x(offset_x), _offset_y(offset_y)
  61 {
  62         first = 0;
  63
  64         /* the cursor isnt yet visible */
  65         cursor_visible = false;
  66         screen_refresh_y = -1;
  67
  68         /* create the foreground pixmap */
  69         foreground = p;
  70
  71         cursor_pixmap = 0;
  72         cursor_pixmap_x = 0;
  73         cursor_pixmap_y = 0;
  74         cursor_pixmap_w = 0;
  75         cursor_pixmap_h = 0;
  76
  77 #ifdef USE_PAINTER
  78         // We need this GC
  79         gc_copy = createGC();
  80 #endif
  81 }
  82
  83
  84 // Destructor
  85 LyXScreen::~LyXScreen() {}
  86
  87
  88 void LyXScreen::Redraw()
  89 {
  90         DrawFromTo(0, _height);
  91         screen_refresh_y = -1;
  92         expose(0, 0, _width, _height);
  93         if (cursor_visible) {
  94                 cursor_visible = false;
  95                 ShowCursor();
  96         }
  97 }
  98
  99
 100 #ifdef USE_PAINTER
 101 void LyXScreen::expose(int x, int y, int exp_width, int exp_height)
 102 {
 103         XCopyArea(fl_display,
 104                   foreground,
 105                   _window,
 106                   gc_copy,
 107                   x, y,
 108                   exp_width, exp_height,
 109                   x+_offset_x, y+_offset_y);
 110 }
 111 #else
 112 void LyXScreen::expose(int x, int y, int exp_width, int exp_height)
 113 {
 114         XCopyArea(fl_display,
 115                   foreground,
 116                   _window,
 117                   getGC(gc_copy),
 118                   x, y,
 119                   exp_width, exp_height,
 120                   x+_offset_x, y+_offset_y);
 121 }
 122 #endif
 123
 124
 125 #ifdef USE_PAINTER
 126 void LyXScreen::DrawFromTo(int y1, int y2)
 127 {
 128         long y_text = first + y1;
 129
 130         /* get the first needed row */
 131         Row * row = text->GetRowNearY(y_text);
 132         /* y_text is now the real beginning of the row */
 133
 134         long y = y_text - first;
 135         /* y1 is now the real beginning of row on the screen */
 136
 137         while (row != 0 && y < y2) {
 138
 139                 text->GetVisibleRow(y, row, y + first);
 140                 y += row->height;
 141                 row = row -> next;
 142
 143         }
 144
 145         /* maybe we have to clear the screen at the bottom */
 146         if (y < y2) {
 147                 owner->painter().fillRectangle(0, y, _width, y2 - y,
 148                                                LColor::bottomarea);
 149         }
 150 }
 151 #else
 152 void LyXScreen::DrawFromTo(int y1, int y2)
 153 {
 154         long y_text = first + y1;
 155
 156         /* get the first needed row */
 157         Row * row = text->GetRowNearY(y_text);
 158         /* y_text is now the real beginning of the row */
 159
 160         long y = y_text - first;
 161         /* y1 is now the real beginning of row on the screen */
 162
 163         while (row != 0 && y < y2) {
 164
 165                 text->GetVisibleRow(*this, y, row, y + first);
 166                 y += row->height;
 167                 row = row -> next;
 168
 169         }
 170
 171         /* maybe we have to clear the screen at the bottom */
 172         if (y < y2) {
 173                 fillRectangle(gc_lighted,
 174                               0,
 175                               y,
 176                               _width,
 177                               y2 - y);
 178         }
 179 }
 180 #endif
 181
 182
 183 void LyXScreen::DrawOneRow(Row * row, long & y_text)
 184 {
 185         long y = y_text - first;
 186
 187         if (y + row->height > 0 && y - row->height <= _height) {
 188                 /* ok there is something visible */
 189 #ifdef USE_PAINTER
 190                 text->GetVisibleRow(y, row, y + first);
 191 #else
 192                 text->GetVisibleRow(*this, y, row, y + first);
 193 #endif
 194         }
 195         y_text+= row->height;
 196 }
 197
 198
 199 /* draws the screen, starting with textposition y. uses as much already
 200 * printed pixels as possible */
 201 #ifdef USE_PAINTER
 202 void LyXScreen::Draw(long  y)
 203 {
 204         if (cursor_visible) HideCursor();
 205
 206         if (y < 0) y = 0;
 207         long old_first = first;
 208         first = y;
 209
 210         /* is any optimiziation possible? */
 211         if ((y - old_first) < _height
 212             && (old_first - y) < _height) {
 213                 if (first < old_first) {
 214                         DrawFromTo(0, old_first - first);
 215                         XCopyArea (fl_display,
 216                                    _window,
 217                                    _window,
 218                                    gc_copy,
 219                                    _offset_x, _offset_y,
 220                                    _width , _height - old_first + first,
 221                                    _offset_x, _offset_y + old_first - first);
 222                         // expose the area drawn
 223                         expose(0, 0, _width, old_first - first);
 224                 } else  {
 225                         DrawFromTo(_height + old_first - first, _height);
 226                         XCopyArea (fl_display,
 227                                    _window,
 228                                    _window,
 229                                    gc_copy,
 230                                    _offset_x, _offset_y + first - old_first,
 231                                    _width , _height + old_first - first,
 232                                    _offset_x, _offset_y);
 233                         // expose the area drawn
 234                         expose(0, _height + old_first - first,
 235                                _width, first - old_first);
 236                 }
 237         } else {
 238                 /* make a dumb new-draw */
 239                 DrawFromTo(0, _height);
 240                 expose(0, 0, _width, _height);
 241         }
 242 }
 243 #else
 244 void LyXScreen::Draw(long  y)
 245 {
 246         if (cursor_visible) HideCursor();
 247
 248         if (y < 0) y = 0;
 249         long old_first = first;
 250         first = y;
 251
 252         /* is any optimiziation possible? */
 253         if ((y - old_first) < _height
 254             && (old_first - y) < _height) {
 255                 if (first < old_first) {
 256                         DrawFromTo(0, old_first - first);
 257                         XCopyArea (fl_display,
 258                                    _window,
 259                                    _window,
 260                                    getGC(gc_copy),
 261                                    _offset_x, _offset_y,
 262                                    _width , _height - old_first + first,
 263                                    _offset_x, _offset_y + old_first - first);
 264                         // expose the area drawn
 265                         expose(0, 0, _width, old_first - first);
 266                 } else  {
 267                         DrawFromTo(_height + old_first - first, _height);
 268                         XCopyArea (fl_display,
 269                                    _window,
 270                                    _window,
 271                                    getGC(gc_copy),
 272                                    _offset_x, _offset_y + first - old_first,
 273                                    _width , _height + old_first - first,
 274                                    _offset_x, _offset_y);
 275                         // expose the area drawn
 276                         expose(0, _height + old_first - first,
 277                                _width, first - old_first);
 278                 }
 279         } else {
 280                 /* make a dumb new-draw */
 281                 DrawFromTo(0, _height);
 282                 expose(0, 0, _width, _height);
 283         }
 284 }
 285 #endif
 286
 287
 288 void LyXScreen::ShowCursor()
 289 {
 290         long x = 0;
 291         long y1 = 0;
 292         long y2 = 0;
 293
 294         if (cursor_visible) return;
 295
 296         x = text->cursor.x;
 297
 298         y1 = text->cursor.y - text->real_current_font.maxAscent() - first;
 299         if (y1 < 0) y1 = 0;
 300
 301         y2 = text->cursor.y + text->real_current_font.maxDescent() - first;
 302         if (y2 > _height) y2 = _height;
 303
 304         // Secure against very strange situations
 305         if (y2 < y1) y2 = y1;
 306
 307 #ifndef USE_PAINTER
 308         if (fast_selection || mono_video) {
 309                 if (y2 > 0 && y1 < _height) {
 310                         XDrawLine(fl_display,
 311                                   _window, getGC(gc_select),
 312                                   x + _offset_x,
 313                                   y1 + _offset_y,
 314                                   x + _offset_x,
 315                                   y2 + _offset_y);
 316                         cursor_visible = true;
 317                 }
 318         } else {
 319 #endif
 320                 if (cursor_pixmap){
 321                         XFreePixmap(fl_display, cursor_pixmap);
 322                         cursor_pixmap = 0;
 323                 }
 324
 325                 if (y2 > 0 && y1 < _height) {
 326                         cursor_pixmap_w = 1;
 327                         cursor_pixmap_h = y2 - y1 + 1;
 328                         cursor_pixmap_x = x;
 329                         cursor_pixmap_y = y1;
 330                         cursor_pixmap =
 331                                 XCreatePixmap(fl_display,
 332                                               fl_root,
 333                                               cursor_pixmap_w,
 334                                               cursor_pixmap_h,
 335                                               fl_get_visual_depth());
 336 #ifdef USE_PAINTER
 337                         XCopyArea(fl_display,
 338                                   _window,
 339                                   cursor_pixmap,
 340                                   gc_copy,
 341                                   _offset_x + cursor_pixmap_x,
 342                                   _offset_y + cursor_pixmap_y,
 343                                   cursor_pixmap_w, cursor_pixmap_h,
 344                                   0, 0);
 345                         XDrawLine(fl_display,
 346                                   _window, gc_copy,
 347                                   x + _offset_x,
 348                                   y1 + _offset_y,
 349                                   x + _offset_x,
 350                                   y2 + _offset_y);
 351 #else
 352                         XCopyArea(fl_display,
 353                                   _window,
 354                                   cursor_pixmap,
 355                                   getGC(gc_copy),
 356                                   _offset_x + cursor_pixmap_x,
 357                                   _offset_y + cursor_pixmap_y,
 358                                   cursor_pixmap_w, cursor_pixmap_h,
 359                                   0, 0);
 360                         XDrawLine(fl_display,
 361                                   _window,
 362                                   getGC(gc_copy),
 363                                   x + _offset_x,
 364                                   y1 + _offset_y,
 365                                   x + _offset_x,
 366                                   y2 + _offset_y);
 367 #endif
 368                         cursor_visible = true;
 369                 }
 370 #ifndef USE_PAINTER
 371         }
 372 #endif
 373 }
 374
 375
 376 /* returns 1 if first has changed, otherwise 0 */
 377 int LyXScreen::FitManualCursor(long /*x*/, long y, int asc, int desc)
 378 {
 379         long  newtop = first;
 380
 381         if (y + desc  - first >= _height)
 382                 newtop = y - 3*_height / 4;   /* the scroll region must be so big!! */
 383         else if (y - asc < first
 384                  && first > 0) {
 385                 newtop = y - _height / 4;
 386         }
 387         if (newtop < 0)
 388                 newtop = 0;
 389
 390         if (newtop != first){
 391                 Draw(newtop);
 392                 first = newtop;
 393                 return 1;
 394         }
 395         return 0;
 396 }
 397
 398
 399 void  LyXScreen::HideManualCursor(long x, long y, int asc, int desc)
 400 {
 401 #ifdef MONO
 402         if (fast_selection || mono_video)
 403                 ShowManualCursor(x, y, asc, desc);
 404         else
 405 #endif
 406                 HideCursor();
 407 }
 408
 409
 410 void  LyXScreen::ShowManualCursor(long x, long y, int asc, int desc)
 411 {
 412         long y1 = 0;
 413         long y2 = 0;
 414
 415         y1 = y - first - asc;
 416         if (y1 < 0)
 417                 y1 = 0;
 418         y2 = y -first + desc;
 419         if (y2 > _height)
 420                 y2 = _height;
 421
 422 #ifndef USE_PAINTER
 423         if (fast_selection || mono_video) {
 424                 if (y2 > 0 && y1 < _height) {
 425                         XDrawLine(fl_display,
 426                                   _window, getGC(gc_select),
 427                                   x+_offset_x,
 428                                   y1+_offset_y,
 429                                   x+_offset_x,
 430                                   y2+_offset_y);
 431                 }
 432         } else {
 433 #endif
 434                 if (cursor_pixmap){
 435                         XFreePixmap(fl_display, cursor_pixmap);
 436                         cursor_pixmap = 0;
 437                 }
 438
 439                 if (y2 > 0 && y1 < _height) {
 440                         cursor_pixmap_w = 1;
 441                         cursor_pixmap_h = y2 - y1 + 1;
 442                         cursor_pixmap_x = x,
 443                                 cursor_pixmap_y = y1;
 444                         cursor_pixmap =
 445                                 XCreatePixmap (fl_display,
 446                                                fl_root,
 447                                                cursor_pixmap_w,
 448                                                cursor_pixmap_h,
 449                                                fl_get_visual_depth());
 450 #ifdef USE_PAINTER
 451                         XCopyArea (fl_display,
 452                                    _window,
 453                                    cursor_pixmap,
 454                                    gc_copy,
 455                                    _offset_x + cursor_pixmap_x,
 456                                    _offset_y + cursor_pixmap_y,
 457                                    cursor_pixmap_w,
 458                                    cursor_pixmap_h,
 459                                    0, 0);
 460                         XDrawLine(fl_display,
 461                                   _window, gc_copy,
 462                                   x+_offset_x,
 463                                   y1+_offset_y,
 464                                   x+_offset_x,
 465                                   y2+_offset_y);
 466 #else
 467                         XCopyArea (fl_display,
 468                                    _window,
 469                                    cursor_pixmap,
 470                                    getGC(gc_copy),
 471                                    _offset_x + cursor_pixmap_x,
 472                                    _offset_y + cursor_pixmap_y,
 473                                    cursor_pixmap_w,
 474                                    cursor_pixmap_h,
 475                                    0, 0);
 476                         XDrawLine(fl_display,
 477                                   _window,
 478                                   getGC(gc_copy),
 479                                   x+_offset_x,
 480                                   y1+_offset_y,
 481                                   x+_offset_x,
 482                                   y2+_offset_y);
 483 #endif
 484                 }
 485                 cursor_visible = true;
 486 #ifndef USE_PAINTER
 487         }
 488 #endif
 489 }
 490
 491
 492 void LyXScreen::HideCursor()
 493 {
 494         if (!cursor_visible) return;
 495
 496 #ifndef USE_PAINTER
 497         if (fast_selection || mono_video) {
 498                 cursor_visible = false;
 499                 ShowCursor();
 500                 cursor_visible = false;
 501         } else {
 502 #endif
 503                 if (cursor_pixmap){
 504 #ifdef USE_PAINTER
 505                         XCopyArea (fl_display,
 506                                    cursor_pixmap,
 507                                    _window,
 508                                    gc_copy,
 509                                    0, 0,
 510                                    cursor_pixmap_w, cursor_pixmap_h,
 511                                    cursor_pixmap_x + _offset_x,
 512                                    cursor_pixmap_y + _offset_y);
 513 #else
 514                         XCopyArea (fl_display,
 515                                    cursor_pixmap,
 516                                    _window,
 517                                    getGC(gc_copy),
 518                                    0, 0,
 519                                    cursor_pixmap_w, cursor_pixmap_h,
 520                                    cursor_pixmap_x + _offset_x,
 521                                    cursor_pixmap_y + _offset_y);
 522 #endif
 523                 }
 524                 cursor_visible = false;
 525 #ifndef USE_PAINTER
 526         }
 527 #endif
 528 }
 529
 530
 531 void LyXScreen::CursorToggle()
 532 {
 533         if (cursor_visible)
 534                 HideCursor();
 535         else
 536                 ShowCursor();
 537 }
 538
 539
 540 /* returns a new top so that the cursor is visible */
 541 long LyXScreen::TopCursorVisible()
 542 {
 543         long newtop = first;
 544
 545         if (text->cursor.y
 546             - text->cursor.row->baseline
 547             + text->cursor.row->height
 548             - first >= _height) {
 549                 if (text->cursor.row->height < _height
 550                     && text->cursor.row->height > _height/4)
 551                         newtop = text->cursor.y
 552                                 + text->cursor.row->height
 553                                 - text->cursor.row->baseline - _height;
 554                 else
 555                         newtop = text->cursor.y
 556                                 - 3*_height / 4;   /* the scroll region must be so big!! */
 557         } else if (text->cursor.y - text->cursor.row->baseline < first
 558                    && first > 0) {
 559                 if (text->cursor.row->height < _height
 560                     && text->cursor.row->height > _height/4)
 561                         newtop = text->cursor.y - text->cursor.row->baseline;
 562                 else {
 563                         newtop = text->cursor.y - _height / 4;
 564                         if (newtop > first)
 565                                 newtop = first;
 566                 }
 567         }
 568         if (newtop < 0)
 569                 newtop = 0;
 570
 571         return newtop;
 572 }
 573
 574
 575 /* scrolls the screen so that the cursor is visible, if necessary.
 576 * returns 1 if a change was made, otherwise 0 */
 577 int LyXScreen::FitCursor()
 578 {
 579         /* is a change necessary */
 580         long  newtop = TopCursorVisible();
 581         int result = (newtop != first);
 582         if (result)
 583                 Draw(newtop);
 584         return result;
 585 }
 586
 587
 588 void LyXScreen::Update()
 589 {
 590         long y = 0;
 591
 592         if (text->status == LyXText::NEED_MORE_REFRESH
 593             || screen_refresh_y > -1 ) {
 594                 if (screen_refresh_y > -1
 595                     && screen_refresh_y < text->refresh_y)
 596                         y = screen_refresh_y;
 597                 else
 598                         y = text->refresh_y;
 599
 600                 if (y < first) y = first;
 601
 602                 DrawFromTo(y - first, _height);
 603                 text->refresh_y = 0;
 604                 text->status = LyXText::UNCHANGED;
 605                 screen_refresh_y = -1;
 606                 expose(0, y-first, _width, _height - (y - first));
 607         } else if (text->status == LyXText::NEED_VERY_LITTLE_REFRESH) {
 608                 /* ok I will update the current cursor row */
 609                 y = text->refresh_y;
 610                 DrawOneRow(text->refresh_row, y);
 611                 text->status = LyXText::UNCHANGED;
 612                 expose(0, text->refresh_y-first,
 613                        _width, text->refresh_row->height);
 614         }
 615 }
 616
 617
 618 void LyXScreen::SmallUpdate()
 619 {
 620         Row * row = 0;
 621         long y = 0;
 622         long y2 = 0;
 623
 624         if (text->status == LyXText::NEED_MORE_REFRESH){
 625                 /* ok I will update till the current cursor row */
 626                 row = text->refresh_row;
 627                 y = text->refresh_y;
 628                 y2 = y;
 629
 630                 if (y > text->cursor.y) {
 631                         Update();
 632                         return;
 633                 }
 634
 635                 while (row && row != text->cursor.row && y < first + _height) {
 636                         DrawOneRow(row, y);
 637                         row = row->next;
 638                 }
 639
 640                 DrawOneRow(row, y);
 641                 screen_refresh_y = y;
 642                 screen_refresh_row = row->next;
 643                 text->status = LyXText::UNCHANGED;
 644                 // Is the right regin exposed?
 645                 expose(0, y2-first, _width, y-y2);
 646         } else if (text->status == LyXText::NEED_VERY_LITTLE_REFRESH) {
 647                 /* ok I will update the current cursor row */
 648                 row = text->refresh_row;
 649                 y = text->refresh_y;
 650                 DrawOneRow(row, y);
 651                 text->status = LyXText::UNCHANGED;
 652                 expose(0, text->refresh_y - first,
 653                        _width, row->height);
 654         }
 655 }
 656
 657
 658 void LyXScreen::ToggleSelection(bool kill_selection)
 659 {
 660         /* only if there is a selection */
 661         if (!text->selection)
 662                 return;
 663
 664         long top = 0;
 665         long bottom = 0;
 666
 667 #ifndef USE_PAINTER
 668         if (fast_selection || mono_video) {
 669
 670                 /* selection only in one row ?*/
 671                 if (text->sel_start_cursor.y == text->sel_end_cursor.y) {
 672
 673                         /* only if something is visible */
 674                         if (text->sel_start_cursor.y
 675                             - text->sel_start_cursor.row->baseline
 676                             - first < _height
 677                             && text->sel_start_cursor.y
 678                             - text->sel_start_cursor.row->baseline +
 679                             text->sel_start_cursor.row->height - first > 0) {
 680                                 top = text->sel_start_cursor.y
 681                                         - text->sel_start_cursor.row->baseline
 682                                         - first;
 683                                 bottom = top
 684                                         + text->sel_start_cursor.row->height;
 685                                 if (top<0)
 686                                         top = 0;
 687                                 if (bottom > _height)
 688                                         bottom = _height;
 689                                 XFillRectangle(fl_display, _window,
 690                                                getGC(gc_select),
 691                                                text->sel_start_cursor.x
 692                                                +_offset_x,
 693                                                top+_offset_y,
 694                                                text->sel_end_cursor.x
 695                                                - text->sel_start_cursor.x,
 696                                                bottom - top);
 697                         }
 698                 } else {
 699                         /* the sel_start_cursor row first */
 700                         /* only if anything is visible */
 701                         if (text->sel_start_cursor.y
 702                             - text->sel_start_cursor.row->baseline
 703                             - first < _height
 704                             && text->sel_start_cursor.y
 705                             - text->sel_start_cursor.row->baseline +
 706                             text->sel_start_cursor.row->height - first > 0) {
 707                                 top = text->sel_start_cursor.y
 708                                         - text->sel_start_cursor.row->baseline
 709                                         - first;
 710                                 bottom = top
 711                                         + text->sel_start_cursor.row->height;
 712                                 if (top<0)
 713                                         top = 0;
 714                                 if (bottom > _height)
 715                                         bottom = _height;
 716                                 XFillRectangle(fl_display, _window,
 717                                                getGC(gc_select),
 718                                                text->sel_start_cursor.x
 719                                                +_offset_x,
 720                                                top+_offset_y,
 721                                                _width
 722                                                - text->sel_start_cursor.x,
 723                                                bottom - top);
 724                         }
 725
 726                         /* the main body */
 727
 728                         if (text->sel_start_cursor.row->next !=
 729                             text->sel_end_cursor.row) {
 730                                 top = text->sel_start_cursor.y
 731                                         - text->sel_start_cursor.row->baseline
 732                                         + text->sel_start_cursor.row->height;
 733                                 bottom = text->sel_end_cursor.y
 734                                         - text->sel_end_cursor.row->baseline;
 735
 736                                 if (top - first < 0)
 737                                         top = first;
 738                                 if (bottom - first < 0)
 739                                         bottom = first;
 740
 741                                 if (bottom - first > _height)
 742                                         bottom = first + _height;
 743                                 if (top - first > _height)
 744                                         top = first + _height;
 745
 746                                 if (top != bottom) {
 747                                         XFillRectangle(fl_display,
 748                                                        _window,
 749                                                        getGC(gc_select),
 750                                                        0+_offset_x,
 751                                                        top - first+_offset_y,
 752                                                        _width,
 753                                                        bottom - top);
 754                                 }
 755                         }
 756
 757                         /* the sel_end_cursor row last */
 758                         if (text->sel_end_cursor.y
 759                             - text->sel_end_cursor.row->baseline
 760                             - first < _height
 761                             && text->sel_end_cursor.y
 762                             - text->sel_end_cursor.row->baseline +
 763                             text->sel_end_cursor.row->height - first > 0) {
 764                                 top = text->sel_end_cursor.y
 765                                         - text->sel_end_cursor.row->baseline
 766                                         - first;
 767                                 bottom = top
 768                                         + text->sel_end_cursor.row->height;
 769                                 if (top<0)
 770                                         top = 0;
 771                                 if (bottom > _height)
 772                                         bottom = _height;
 773                                 XFillRectangle(fl_display, _window,
 774                                                getGC(gc_select),
 775                                                0+_offset_x,
 776                                                top+_offset_y,
 777                                                text->sel_end_cursor.x,
 778                                                bottom - top);
 779                         }
 780                 }
 781         } else {
 782 #endif
 783                 top = text->sel_start_cursor.y
 784                         - text->sel_start_cursor.row->baseline;
 785                 bottom = text->sel_end_cursor.y
 786                         - text->sel_end_cursor.row->baseline
 787                         + text->sel_end_cursor.row->height;
 788
 789                 if (top - first < 0)
 790                         top = first;
 791                 if (bottom - first < 0)
 792                         bottom = first;
 793
 794                 if (bottom - first > _height)
 795                         bottom = first + _height;
 796                 if (top - first > _height)
 797                         top = first + _height;
 798
 799                 if (kill_selection)
 800                         text->selection = 0;
 801                 DrawFromTo(top - first, bottom - first);
 802                 expose(0, top - first, _width, bottom - first - (top - first));
 803 #ifndef USE_PAINTER
 804         }
 805 #endif
 806 }
 807
 808
 809 void LyXScreen::ToggleToggle()
 810 {
 811         long top = 0;
 812         long bottom = 0;
 813
 814         if (text->toggle_cursor.par == text->toggle_end_cursor.par
 815             && text->toggle_cursor.pos == text->toggle_end_cursor.pos)
 816                 return;
 817
 818 #ifndef USE_PAINTER
 819         if (fast_selection || mono_video) {
 820
 821                 /* selection only in one row ?*/
 822                 if (text->toggle_cursor.y == text->toggle_end_cursor.y) {
 823
 824                         /* only if anything is visible */
 825                         if (text->toggle_cursor.y - text->toggle_cursor.row->baseline - first < _height
 826                             && text->toggle_cursor.y - text->toggle_cursor.row->baseline +
 827                             text->toggle_cursor.row->height - first > 0) {
 828                                 top = text->toggle_cursor.y - text->toggle_cursor.row->baseline - first;
 829                                 bottom = top + text->toggle_cursor.row->height;
 830                                 if (top < 0) top = 0;
 831                                 if (bottom > _height) bottom = _height;
 832                                 XFillRectangle(fl_display, _window,
 833                                                getGC(gc_select),
 834                                                text->toggle_cursor.x+_offset_x,
 835                                                top+_offset_y,
 836                                                text->toggle_end_cursor.x  -
 837                                                text->toggle_cursor.x,
 838                                                bottom - top);
 839                         }
 840                 } else {
 841                         /* the toggle_cursor row first */
 842                         /* only if anything is visible */
 843                         if (text->toggle_cursor.y - text->toggle_cursor.row->baseline - first < _height
 844                             && text->toggle_cursor.y - text->toggle_cursor.row->baseline +
 845                             text->toggle_cursor.row->height - first > 0) {
 846                                 top = text->toggle_cursor.y - text->toggle_cursor.row->baseline - first;
 847                                 bottom = top + text->toggle_cursor.row->height;
 848                                 if (top<0)
 849                                         top = 0;
 850                                 if (bottom > _height)
 851                                         bottom = _height;
 852                                 XFillRectangle(fl_display, _window,
 853                                                getGC(gc_select),
 854                                                text->toggle_cursor.x+_offset_x,
 855                                                top+_offset_y,
 856                                                _width - text->toggle_cursor.x,
 857                                                bottom - top);
 858                         }
 859
 860                         /* the main body */
 861
 862                         if (text->toggle_cursor.row->next !=
 863                             text->toggle_end_cursor.row) {
 864                                 top = text->toggle_cursor.y
 865                                         - text->toggle_cursor.row->baseline
 866                                         + text->toggle_cursor.row->height;
 867                                 bottom = text->toggle_end_cursor.y
 868                                         - text->toggle_end_cursor.row->baseline;
 869
 870                                 if (top - first < 0)
 871                                         top = first;
 872                                 if (bottom - first < 0)
 873                                         bottom = first;
 874
 875                                 if (bottom - first > _height)
 876                                         bottom = first + _height;
 877                                 if (top - first > _height)
 878                                         top = first + _height;
 879
 880                                 if (top != bottom) {
 881                                         XFillRectangle(fl_display, _window,
 882                                                        getGC(gc_select),
 883                                                        0+_offset_x,
 884                                                        top - first+_offset_y,
 885                                                        _width,
 886                                                        bottom - top);
 887                                 }
 888                         }
 889
 890                         /* the toggle_end_cursor row last */
 891                         if (text->toggle_end_cursor.y - text->toggle_end_cursor.row->baseline - first < _height
 892                             && text->toggle_end_cursor.y - text->toggle_end_cursor.row->baseline +
 893                             text->toggle_end_cursor.row->height - first > 0) {
 894                                 top = text->toggle_end_cursor.y
 895                                         - text->toggle_end_cursor.row->baseline
 896                                         - first;
 897                                 bottom = top
 898                                         + text->toggle_end_cursor.row->height;
 899                                 if (top<0)
 900                                         top = 0;
 901                                 if (bottom > _height)
 902                                         bottom = _height;
 903                                 XFillRectangle(fl_display, _window,
 904                                                getGC(gc_select),
 905                                                0+_offset_x,
 906                                                top+_offset_y,
 907                                                text->toggle_end_cursor.x,
 908                                                bottom - top);
 909                         }
 910                 }
 911         } else {
 912 #endif
 913                 top = text->toggle_cursor.y
 914                         - text->toggle_cursor.row->baseline;
 915                 bottom = text->toggle_end_cursor.y
 916                         - text->toggle_end_cursor.row->baseline
 917                         + text->toggle_end_cursor.row->height;
 918
 919                 if (top - first < 0)
 920                         top = first;
 921                 if (bottom - first < 0)
 922                         bottom = first;
 923
 924                 if (bottom - first > _height)
 925                         bottom = first + _height;
 926                 if (top - first > _height)
 927                         top = first + _height;
 928
 929                 DrawFromTo(top - first, bottom - first);
 930                 expose(0, top - first, _width, bottom - first - (top - first));
 931 #ifndef USE_PAINTER
 932         }
 933 #endif
 934 }
 935
 936
 937 #ifndef USE_PAINTER
 938 void LyXScreen::drawTableLine(int baseline, int x, int length, bool on_off)
 939 {
 940         GC gc;
 941         if (on_off)
 942                 gc = getGC(gc_thin_on_off_line);
 943         else
 944                 gc = getGC(gc_copy);
 945         drawLine(gc,
 946                  x,
 947                  baseline,
 948                  x + length,
 949                  baseline);
 950 }
 951 #endif
 952
 953
 954 #ifndef USE_PAINTER
 955 void LyXScreen::drawVerticalTableLine(int x, int y1, int y2, bool on_off)
 956 {
 957         GC gc;
 958         if (on_off)
 959                 gc = getGC(gc_thin_on_off_line);
 960         else
 961                 gc = getGC(gc_copy);
 962         drawLine(gc,
 963                  x,
 964                  y1,
 965                  x,
 966                  y2);
 967 }
 968 #endif
 969
 970
 971 #ifndef USE_PAINTER
 972 void LyXScreen::drawFrame(int /*ft*/, int x, int y, int w, int h,
 973                           FL_COLOR /*col*/, int /*b*/)
 974 {
 975 // Implement this using X11 calls, and the repaint problems are gone!
 976 // At least, I think that should do it since we only have them after
 977 // one of these buttons are displayed now! Lars, it seems you've hit the
 978 // nail :-) (Asger)
 979 //      fl_winset(foreground);
 980 //      fl_drw_frame(ft, x,  y,  w,  h, col, b);
 981         // This should be changed to draw a button like frame, in the
 982         // mean time we'll just use a regular rectangle
 983
 984          // I want the buttons back before 0.12. OK, this is very simple,
 985          // like what is done in xforms sources.  (Ale)
 986
 987         // This one is too dirty. Get rid of it.
 988         extern GC fl_gc;
 989
 990         // Please comment this annonymous variable.
 991         int d = 2;
 992
 993         // I think these calls to fl_color might make xforms sometimes
 994         // draw the wrong color on other objects.
 995         fl_color(FL_TOP_BCOL);
 996         XFillRectangle(fl_display, foreground, fl_gc,
 997                        x - d, y - d, w + 2 * d, d);
 998         fl_color(FL_BOTTOM_BCOL);
 999         XFillRectangle(fl_display, foreground, fl_gc,
1000                        x - d, y + h, w + 2 * d, d);
1001
1002         // Now a couple of trapezoids
1003         XPoint pl[4], pr[4];
1004
1005         pl[0].x = x - d;   pl[0].y = y - d;
1006         pl[1].x = x - d;   pl[1].y = y + h + d;
1007         pl[2].x = x;     pl[2].y = y + h;
1008         pl[3].x = x;     pl[3].y = y;
1009
1010         pr[0].x = x + w + d; pr[0].y = y - d;
1011         pr[1].x = x + w + d; pr[1].y = y + h + d;
1012         pr[2].x = x + w;   pr[2].y = y + h;
1013         pr[3].x = x + w;   pr[3].y = y;
1014
1015         fl_color(FL_LEFT_BCOL);
1016         XFillPolygon(fl_display,
1017                      foreground,
1018                      fl_gc, pl, 4,
1019                      Convex, CoordModeOrigin);
1020         fl_color(FL_RIGHT_BCOL);
1021         XFillPolygon(fl_display,
1022                      foreground,
1023                      fl_gc, pr, 4,
1024                      Convex, CoordModeOrigin);
1025 }
1026 #endif