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 "lyxdraw.h"
  19 #include "lyxtext.h"
  20 #include "lyxrow.h"
  21 #include "BufferView.h"
  22 #include "Painter.h"
  23
  24 extern int mono_video;
  25 extern int fast_selection;
  26
  27 #ifdef USE_PAINTER
  28 static
  29 GC createGC()
  30 {
  31         XGCValues val;
  32         val.foreground = BlackPixel(fl_display,
  33                                     DefaultScreen(fl_display));
  34
  35         val.function=GXcopy;
  36         val.graphics_exposures = false;
  37         val.line_style = LineSolid;
  38         val.line_width = 0;
  39         return XCreateGC(fl_display, RootWindow(fl_display, 0),
  40                          GCForeground | GCFunction | GCGraphicsExposures
  41                          | GCLineWidth | GCLineStyle , &val);
  42 }
  43 #endif
  44
  45
  46 // Constructor
  47 LyXScreen::LyXScreen(BufferView * o, Window window,
  48 #ifdef NEW_WA
  49                      Pixmap p,
  50 #endif
  51                      Dimension width,
  52                      Dimension height,
  53                      Dimension offset_x,
  54                      Dimension offset_y,
  55                      LyXText *text_ptr)
  56         : owner(o), text(text_ptr), _window(window),
  57         _width(width), _height(height),
  58         _offset_x(offset_x), _offset_y(offset_y)
  59 {
  60         first = 0;
  61
  62         /* the cursor isnt yet visible */
  63         cursor_visible = false;
  64         screen_refresh_y = -1;
  65
  66         /* create the foreground pixmap */
  67 #ifdef NEW_WA
  68         foreground = p;
  69 #else
  70         foreground = XCreatePixmap (fl_display,
  71                                     fl_root,
  72                                     _width, _height,
  73                                     fl_get_visual_depth());
  74 #endif
  75         cursor_pixmap = 0;
  76         cursor_pixmap_x = 0;
  77         cursor_pixmap_y = 0;
  78         cursor_pixmap_w = 0;
  79         cursor_pixmap_h = 0;
  80
  81 #ifdef USE_PAINTER
  82         // We need this GC
  83         gc_copy = createGC();
  84 #endif
  85 }
  86
  87
  88 // Destructor
  89 LyXScreen::~LyXScreen()
  90 {
  91 #ifndef NEW_WA
  92         XFreePixmap(fl_display, foreground);
  93 #endif
  94 }
  95
  96
  97 void LyXScreen::Redraw()
  98 {
  99         DrawFromTo(0, _height);
 100         screen_refresh_y = -1;
 101         expose(0, 0, _width, _height);
 102         if (cursor_visible) {
 103                 cursor_visible = false;
 104                 ShowCursor();
 105         }
 106 }
 107
 108
 109 #ifdef USE_PAINTER
 110 void LyXScreen::expose(int x, int y, int exp_width, int exp_height)
 111 {
 112         XCopyArea(fl_display,
 113                   foreground,
 114                   _window,
 115                   gc_copy,
 116                   x, y,
 117                   exp_width, exp_height,
 118                   x+_offset_x, y+_offset_y);
 119 }
 120 #else
 121 void LyXScreen::expose(int x, int y, int exp_width, int exp_height)
 122 {
 123         XCopyArea(fl_display,
 124                   foreground,
 125                   _window,
 126                   getGC(gc_copy),
 127                   x, y,
 128                   exp_width, exp_height,
 129                   x+_offset_x, y+_offset_y);
 130 }
 131 #endif
 132
 133
 134 #ifdef USE_PAINTER
 135 void LyXScreen::DrawFromTo(int y1, int y2)
 136 {
 137         long y_text = first + y1;
 138
 139         /* get the first needed row */
 140         Row * row = text->GetRowNearY(y_text);
 141         /* y_text is now the real beginning of the row */
 142
 143         long y = y_text - first;
 144         /* y1 is now the real beginning of row on the screen */
 145
 146         while (row != 0 && y < y2) {
 147
 148                 text->GetVisibleRow(y, row, y + first);
 149                 y += row->height;
 150                 row = row -> next;
 151
 152         }
 153
 154         /* maybe we have to clear the screen at the bottom */
 155         if (y < y2) {
 156                 owner->painter().fillRectangle(0, y, _width, y2 - y,
 157                                                LColor::bottomarea);
 158         }
 159 }
 160 #else
 161 void LyXScreen::DrawFromTo(int y1, int y2)
 162 {
 163         long y_text = first + y1;
 164
 165         /* get the first needed row */
 166         Row * row = text->GetRowNearY(y_text);
 167         /* y_text is now the real beginning of the row */
 168
 169         long y = y_text - first;
 170         /* y1 is now the real beginning of row on the screen */
 171
 172         while (row != 0 && y < y2) {
 173
 174                 text->GetVisibleRow(*this, y, row, y + first);
 175                 y += row->height;
 176                 row = row -> next;
 177
 178         }
 179
 180         /* maybe we have to clear the screen at the bottom */
 181         if (y < y2) {
 182                 fillRectangle(gc_lighted,
 183                               0,
 184                               y,
 185                               _width,
 186                               y2 - y);
 187         }
 188 }
 189 #endif
 190
 191
 192 void LyXScreen::DrawOneRow(Row * row, long & y_text)
 193 {
 194         long y = y_text - first;
 195
 196         if (y + row->height > 0 && y - row->height <= _height) {
 197                 /* ok there is something visible */
 198 #ifdef USE_PAINTER
 199                 text->GetVisibleRow(y, row, y + first);
 200 #else
 201                 text->GetVisibleRow(*this, y, row, y + first);
 202 #endif
 203         }
 204         y_text+= row->height;
 205 }
 206
 207
 208 /* draws the screen, starting with textposition y. uses as much already
 209 * printed pixels as possible */
 210 #ifdef USE_PAINTER
 211 void LyXScreen::Draw(long  y)
 212 {
 213         if (cursor_visible) HideCursor();
 214
 215         if (y < 0) y = 0;
 216         long old_first = first;
 217         first = y;
 218
 219         /* is any optimiziation possible? */
 220         if ((y - old_first) < _height
 221             && (old_first - y) < _height) {
 222                 if (first < old_first) {
 223                         DrawFromTo(0, old_first - first);
 224                         XCopyArea (fl_display,
 225                                    _window,
 226                                    _window,
 227                                    gc_copy,
 228                                    _offset_x, _offset_y,
 229                                    _width , _height - old_first + first,
 230                                    _offset_x, _offset_y + old_first - first);
 231                         // expose the area drawn
 232                         expose(0, 0, _width, old_first - first);
 233                 } else  {
 234                         DrawFromTo(_height + old_first - first, _height);
 235                         XCopyArea (fl_display,
 236                                    _window,
 237                                    _window,
 238                                    gc_copy,
 239                                    _offset_x, _offset_y + first - old_first,
 240                                    _width , _height + old_first - first,
 241                                    _offset_x, _offset_y);
 242                         // expose the area drawn
 243                         expose(0, _height + old_first - first,
 244                                _width, first - old_first);
 245                 }
 246         } else {
 247                 /* make a dumb new-draw */
 248                 DrawFromTo(0, _height);
 249                 expose(0, 0, _width, _height);
 250         }
 251 }
 252 #else
 253 void LyXScreen::Draw(long  y)
 254 {
 255         if (cursor_visible) HideCursor();
 256
 257         if (y < 0) y = 0;
 258         long old_first = first;
 259         first = y;
 260
 261         /* is any optimiziation possible? */
 262         if ((y - old_first) < _height
 263             && (old_first - y) < _height) {
 264                 if (first < old_first) {
 265                         DrawFromTo(0, old_first - first);
 266                         XCopyArea (fl_display,
 267                                    _window,
 268                                    _window,
 269                                    getGC(gc_copy),
 270                                    _offset_x, _offset_y,
 271                                    _width , _height - old_first + first,
 272                                    _offset_x, _offset_y + old_first - first);
 273                         // expose the area drawn
 274                         expose(0, 0, _width, old_first - first);
 275                 } else  {
 276                         DrawFromTo(_height + old_first - first, _height);
 277                         XCopyArea (fl_display,
 278                                    _window,
 279                                    _window,
 280                                    getGC(gc_copy),
 281                                    _offset_x, _offset_y + first - old_first,
 282                                    _width , _height + old_first - first,
 283                                    _offset_x, _offset_y);
 284                         // expose the area drawn
 285                         expose(0, _height + old_first - first,
 286                                _width, first - old_first);
 287                 }
 288         } else {
 289                 /* make a dumb new-draw */
 290                 DrawFromTo(0, _height);
 291                 expose(0, 0, _width, _height);
 292         }
 293 }
 294 #endif
 295
 296
 297 void LyXScreen::ShowCursor()
 298 {
 299         long x = 0;
 300         long y1 = 0;
 301         long y2 = 0;
 302
 303         if (cursor_visible) return;
 304
 305         x = text->cursor.x;
 306
 307         y1 = text->cursor.y - text->real_current_font.maxAscent() - first;
 308         if (y1 < 0) y1 = 0;
 309
 310         y2 = text->cursor.y + text->real_current_font.maxDescent() - first;
 311         if (y2 > _height) y2 = _height;
 312
 313         // Secure against very strange situations
 314         if (y2 < y1) y2 = y1;
 315
 316 #ifndef USE_PAINTER
 317         if (fast_selection || mono_video) {
 318                 if (y2 > 0 && y1 < _height) {
 319                         XDrawLine(fl_display,
 320                                   _window, getGC(gc_select),
 321                                   x + _offset_x,
 322                                   y1 + _offset_y,
 323                                   x + _offset_x,
 324                                   y2 + _offset_y);
 325                         cursor_visible = true;
 326                 }
 327         } else {
 328 #endif
 329                 if (cursor_pixmap){
 330                         XFreePixmap(fl_display, cursor_pixmap);
 331                         cursor_pixmap = 0;
 332                 }
 333
 334                 if (y2 > 0 && y1 < _height) {
 335                         cursor_pixmap_w = 1;
 336                         cursor_pixmap_h = y2 - y1 + 1;
 337                         cursor_pixmap_x = x;
 338                         cursor_pixmap_y = y1;
 339                         cursor_pixmap =
 340                                 XCreatePixmap(fl_display,
 341                                               fl_root,
 342                                               cursor_pixmap_w,
 343                                               cursor_pixmap_h,
 344                                               fl_get_visual_depth());
 345 #ifdef USE_PAINTER
 346                         XCopyArea(fl_display,
 347                                   _window,
 348                                   cursor_pixmap,
 349                                   gc_copy,
 350                                   _offset_x + cursor_pixmap_x,
 351                                   _offset_y + cursor_pixmap_y,
 352                                   cursor_pixmap_w, cursor_pixmap_h,
 353                                   0, 0);
 354                         XDrawLine(fl_display,
 355                                   _window, gc_copy,
 356                                   x + _offset_x,
 357                                   y1 + _offset_y,
 358                                   x + _offset_x,
 359                                   y2 + _offset_y);
 360 #else
 361                         XCopyArea(fl_display,
 362                                   _window,
 363                                   cursor_pixmap,
 364                                   getGC(gc_copy),
 365                                   _offset_x + cursor_pixmap_x,
 366                                   _offset_y + cursor_pixmap_y,
 367                                   cursor_pixmap_w, cursor_pixmap_h,
 368                                   0, 0);
 369                         XDrawLine(fl_display,
 370                                   _window,
 371                                   getGC(gc_copy),
 372                                   x + _offset_x,
 373                                   y1 + _offset_y,
 374                                   x + _offset_x,
 375                                   y2 + _offset_y);
 376 #endif
 377                         cursor_visible = true;
 378                 }
 379 #ifndef USE_PAINTER
 380         }
 381 #endif
 382 }
 383
 384
 385 /* returns 1 if first has changed, otherwise 0 */
 386 int LyXScreen::FitManualCursor(long /*x*/, long y, int asc, int desc)
 387 {
 388         long  newtop = first;
 389
 390         if (y + desc  - first >= _height)
 391                 newtop = y - 3*_height / 4;   /* the scroll region must be so big!! */
 392         else if (y - asc < first
 393                  && first > 0) {
 394                 newtop = y - _height / 4;
 395         }
 396         if (newtop < 0)
 397                 newtop = 0;
 398
 399         if (newtop != first){
 400                 Draw(newtop);
 401                 first = newtop;
 402                 return 1;
 403         }
 404         return 0;
 405 }
 406
 407
 408 void  LyXScreen::HideManualCursor(long x, long y, int asc, int desc)
 409 {
 410         if (fast_selection || mono_video)
 411                 ShowManualCursor(x, y, asc, desc);
 412         else
 413                 HideCursor();
 414 }
 415
 416
 417 void  LyXScreen::ShowManualCursor(long x, long y, int asc, int desc)
 418 {
 419         long y1 = 0;
 420         long y2 = 0;
 421
 422         y1 = y - first - asc;
 423         if (y1 < 0)
 424                 y1 = 0;
 425         y2 = y -first + desc;
 426         if (y2 > _height)
 427                 y2 = _height;
 428
 429 #ifndef USE_PAINTER
 430         if (fast_selection || mono_video) {
 431                 if (y2 > 0 && y1 < _height) {
 432                         XDrawLine(fl_display,
 433                                   _window, getGC(gc_select),
 434                                   x+_offset_x,
 435                                   y1+_offset_y,
 436                                   x+_offset_x,
 437                                   y2+_offset_y);
 438                 }
 439         } else {
 440 #endif
 441                 if (cursor_pixmap){
 442                         XFreePixmap(fl_display, cursor_pixmap);
 443                         cursor_pixmap = 0;
 444                 }
 445
 446                 if (y2 > 0 && y1 < _height) {
 447                         cursor_pixmap_w = 1;
 448                         cursor_pixmap_h = y2 - y1 + 1;
 449                         cursor_pixmap_x = x,
 450                                 cursor_pixmap_y = y1;
 451                         cursor_pixmap =
 452                                 XCreatePixmap (fl_display,
 453                                                fl_root,
 454                                                cursor_pixmap_w,
 455                                                cursor_pixmap_h,
 456                                                fl_get_visual_depth());
 457 #ifdef USE_PAINTER
 458                         XCopyArea (fl_display,
 459                                    _window,
 460                                    cursor_pixmap,
 461                                    gc_copy,
 462                                    _offset_x + cursor_pixmap_x,
 463                                    _offset_y + cursor_pixmap_y,
 464                                    cursor_pixmap_w,
 465                                    cursor_pixmap_h,
 466                                    0, 0);
 467                         XDrawLine(fl_display,
 468                                   _window, gc_copy,
 469                                   x+_offset_x,
 470                                   y1+_offset_y,
 471                                   x+_offset_x,
 472                                   y2+_offset_y);
 473 #else
 474                         XCopyArea (fl_display,
 475                                    _window,
 476                                    cursor_pixmap,
 477                                    getGC(gc_copy),
 478                                    _offset_x + cursor_pixmap_x,
 479                                    _offset_y + cursor_pixmap_y,
 480                                    cursor_pixmap_w,
 481                                    cursor_pixmap_h,
 482                                    0, 0);
 483                         XDrawLine(fl_display,
 484                                   _window,
 485                                   getGC(gc_copy),
 486                                   x+_offset_x,
 487                                   y1+_offset_y,
 488                                   x+_offset_x,
 489                                   y2+_offset_y);
 490 #endif
 491                 }
 492                 cursor_visible = true;
 493 #ifndef USE_PAINTER
 494         }
 495 #endif
 496 }
 497
 498
 499 void LyXScreen::HideCursor()
 500 {
 501         if (!cursor_visible) return;
 502
 503 #ifndef USE_PAINTER
 504         if (fast_selection || mono_video) {
 505                 cursor_visible = false;
 506                 ShowCursor();
 507                 cursor_visible = false;
 508         } else {
 509 #endif
 510                 if (cursor_pixmap){
 511 #ifdef USE_PAINTER
 512                         XCopyArea (fl_display,
 513                                    cursor_pixmap,
 514                                    _window,
 515                                    gc_copy,
 516                                    0, 0,
 517                                    cursor_pixmap_w, cursor_pixmap_h,
 518                                    cursor_pixmap_x + _offset_x,
 519                                    cursor_pixmap_y + _offset_y);
 520 #else
 521                         XCopyArea (fl_display,
 522                                    cursor_pixmap,
 523                                    _window,
 524                                    getGC(gc_copy),
 525                                    0, 0,
 526                                    cursor_pixmap_w, cursor_pixmap_h,
 527                                    cursor_pixmap_x + _offset_x,
 528                                    cursor_pixmap_y + _offset_y);
 529 #endif
 530                 }
 531                 cursor_visible = false;
 532 #ifndef USE_PAINTER
 533         }
 534 #endif
 535 }
 536
 537
 538 void LyXScreen::CursorToggle()
 539 {
 540         if (cursor_visible)
 541                 HideCursor();
 542         else
 543                 ShowCursor();
 544 }
 545
 546
 547 /* returns a new top so that the cursor is visible */
 548 long LyXScreen::TopCursorVisible()
 549 {
 550         long newtop = first;
 551
 552         if (text->cursor.y
 553             - text->cursor.row->baseline
 554             + text->cursor.row->height
 555             - first >= _height) {
 556                 if (text->cursor.row->height < _height
 557                     && text->cursor.row->height > _height/4)
 558                         newtop = text->cursor.y
 559                                 + text->cursor.row->height
 560                                 - text->cursor.row->baseline - _height;
 561                 else
 562                         newtop = text->cursor.y
 563                                 - 3*_height / 4;   /* the scroll region must be so big!! */
 564         } else if (text->cursor.y - text->cursor.row->baseline < first
 565                    && first > 0) {
 566                 if (text->cursor.row->height < _height
 567                     && text->cursor.row->height > _height/4)
 568                         newtop = text->cursor.y - text->cursor.row->baseline;
 569                 else {
 570                         newtop = text->cursor.y - _height / 4;
 571                         if (newtop > first)
 572                                 newtop = first;
 573                 }
 574         }
 575         if (newtop < 0)
 576                 newtop = 0;
 577
 578         return newtop;
 579 }
 580
 581
 582 /* scrolls the screen so that the cursor is visible, if necessary.
 583 * returns 1 if a change was made, otherwise 0 */
 584 int LyXScreen::FitCursor()
 585 {
 586         /* is a change necessary */
 587         long  newtop = TopCursorVisible();
 588         int result = (newtop != first);
 589         if (result)
 590                 Draw(newtop);
 591         return result;
 592 }
 593
 594
 595 void LyXScreen::Update()
 596 {
 597         long y = 0;
 598
 599         if (text->status == LyXText::NEED_MORE_REFRESH
 600             || screen_refresh_y > -1 ) {
 601                 if (screen_refresh_y > -1
 602                     && screen_refresh_y < text->refresh_y)
 603                         y = screen_refresh_y;
 604                 else
 605                         y = text->refresh_y;
 606
 607                 if (y < first) y = first;
 608
 609                 DrawFromTo(y - first, _height);
 610                 text->refresh_y = 0;
 611                 text->status = LyXText::UNCHANGED;
 612                 screen_refresh_y = -1;
 613                 expose(0, y-first, _width, _height - (y - first));
 614         } else if (text->status == LyXText::NEED_VERY_LITTLE_REFRESH) {
 615                 /* ok I will update the current cursor row */
 616                 y = text->refresh_y;
 617                 DrawOneRow(text->refresh_row, y);
 618                 text->status = LyXText::UNCHANGED;
 619                 expose(0, text->refresh_y-first,
 620                        _width, text->refresh_row->height);
 621         }
 622 }
 623
 624
 625 void LyXScreen::SmallUpdate()
 626 {
 627         Row * row = 0;
 628         long y = 0;
 629         long y2 = 0;
 630
 631         if (text->status == LyXText::NEED_MORE_REFRESH){
 632                 /* ok I will update till the current cursor row */
 633                 row = text->refresh_row;
 634                 y = text->refresh_y;
 635                 y2 = y;
 636
 637                 if (y > text->cursor.y) {
 638                         Update();
 639                         return;
 640                 }
 641
 642                 while (row && row != text->cursor.row && y < first + _height) {
 643                         DrawOneRow(row, y);
 644                         row = row->next;
 645                 }
 646
 647                 DrawOneRow(row, y);
 648                 screen_refresh_y = y;
 649                 screen_refresh_row = row->next;
 650                 text->status = LyXText::UNCHANGED;
 651                 // Is the right regin exposed?
 652                 expose(0, y2-first, _width, y-y2);
 653         } else if (text->status == LyXText::NEED_VERY_LITTLE_REFRESH) {
 654                 /* ok I will update the current cursor row */
 655                 row = text->refresh_row;
 656                 y = text->refresh_y;
 657                 DrawOneRow(row, y);
 658                 text->status = LyXText::UNCHANGED;
 659                 expose(0, text->refresh_y - first,
 660                        _width, row->height);
 661         }
 662 }
 663
 664
 665 void LyXScreen::ToggleSelection(bool kill_selection)
 666 {
 667         /* only if there is a selection */
 668         if (!text->selection)
 669                 return;
 670
 671         long top = 0;
 672         long bottom = 0;
 673
 674 #ifndef USE_PAINTER
 675         if (fast_selection || mono_video) {
 676
 677                 /* selection only in one row ?*/
 678                 if (text->sel_start_cursor.y == text->sel_end_cursor.y) {
 679
 680                         /* only if something is visible */
 681                         if (text->sel_start_cursor.y
 682                             - text->sel_start_cursor.row->baseline
 683                             - first < _height
 684                             && text->sel_start_cursor.y
 685                             - text->sel_start_cursor.row->baseline +
 686                             text->sel_start_cursor.row->height - first > 0) {
 687                                 top = text->sel_start_cursor.y
 688                                         - text->sel_start_cursor.row->baseline
 689                                         - first;
 690                                 bottom = top
 691                                         + text->sel_start_cursor.row->height;
 692                                 if (top<0)
 693                                         top = 0;
 694                                 if (bottom > _height)
 695                                         bottom = _height;
 696                                 XFillRectangle(fl_display, _window,
 697                                                getGC(gc_select),
 698                                                text->sel_start_cursor.x
 699                                                +_offset_x,
 700                                                top+_offset_y,
 701                                                text->sel_end_cursor.x
 702                                                - text->sel_start_cursor.x,
 703                                                bottom - top);
 704                         }
 705                 } else {
 706                         /* the sel_start_cursor row first */
 707                         /* only if anything is visible */
 708                         if (text->sel_start_cursor.y
 709                             - text->sel_start_cursor.row->baseline
 710                             - first < _height
 711                             && text->sel_start_cursor.y
 712                             - text->sel_start_cursor.row->baseline +
 713                             text->sel_start_cursor.row->height - first > 0) {
 714                                 top = text->sel_start_cursor.y
 715                                         - text->sel_start_cursor.row->baseline
 716                                         - first;
 717                                 bottom = top
 718                                         + text->sel_start_cursor.row->height;
 719                                 if (top<0)
 720                                         top = 0;
 721                                 if (bottom > _height)
 722                                         bottom = _height;
 723                                 XFillRectangle(fl_display, _window,
 724                                                getGC(gc_select),
 725                                                text->sel_start_cursor.x
 726                                                +_offset_x,
 727                                                top+_offset_y,
 728                                                _width
 729                                                - text->sel_start_cursor.x,
 730                                                bottom - top);
 731                         }
 732
 733                         /* the main body */
 734
 735                         if (text->sel_start_cursor.row->next !=
 736                             text->sel_end_cursor.row) {
 737                                 top = text->sel_start_cursor.y
 738                                         - text->sel_start_cursor.row->baseline
 739                                         + text->sel_start_cursor.row->height;
 740                                 bottom = text->sel_end_cursor.y
 741                                         - text->sel_end_cursor.row->baseline;
 742
 743                                 if (top - first < 0)
 744                                         top = first;
 745                                 if (bottom - first < 0)
 746                                         bottom = first;
 747
 748                                 if (bottom - first > _height)
 749                                         bottom = first + _height;
 750                                 if (top - first > _height)
 751                                         top = first + _height;
 752
 753                                 if (top != bottom) {
 754                                         XFillRectangle(fl_display,
 755                                                        _window,
 756                                                        getGC(gc_select),
 757                                                        0+_offset_x,
 758                                                        top - first+_offset_y,
 759                                                        _width,
 760                                                        bottom - top);
 761                                 }
 762                         }
 763
 764                         /* the sel_end_cursor row last */
 765                         if (text->sel_end_cursor.y
 766                             - text->sel_end_cursor.row->baseline
 767                             - first < _height
 768                             && text->sel_end_cursor.y
 769                             - text->sel_end_cursor.row->baseline +
 770                             text->sel_end_cursor.row->height - first > 0) {
 771                                 top = text->sel_end_cursor.y
 772                                         - text->sel_end_cursor.row->baseline
 773                                         - first;
 774                                 bottom = top
 775                                         + text->sel_end_cursor.row->height;
 776                                 if (top<0)
 777                                         top = 0;
 778                                 if (bottom > _height)
 779                                         bottom = _height;
 780                                 XFillRectangle(fl_display, _window,
 781                                                getGC(gc_select),
 782                                                0+_offset_x,
 783                                                top+_offset_y,
 784                                                text->sel_end_cursor.x,
 785                                                bottom - top);
 786                         }
 787                 }
 788         } else {
 789 #endif
 790                 top = text->sel_start_cursor.y
 791                         - text->sel_start_cursor.row->baseline;
 792                 bottom = text->sel_end_cursor.y
 793                         - text->sel_end_cursor.row->baseline
 794                         + text->sel_end_cursor.row->height;
 795
 796                 if (top - first < 0)
 797                         top = first;
 798                 if (bottom - first < 0)
 799                         bottom = first;
 800
 801                 if (bottom - first > _height)
 802                         bottom = first + _height;
 803                 if (top - first > _height)
 804                         top = first + _height;
 805
 806                 if (kill_selection)
 807                         text->selection = 0;
 808                 DrawFromTo(top - first, bottom - first);
 809                 expose(0, top - first, _width, bottom - first - (top - first));
 810 #ifndef USE_PAINTER
 811         }
 812 #endif
 813 }
 814
 815
 816 void LyXScreen::ToggleToggle()
 817 {
 818         long top = 0;
 819         long bottom = 0;
 820
 821         if (text->toggle_cursor.par == text->toggle_end_cursor.par
 822             && text->toggle_cursor.pos == text->toggle_end_cursor.pos)
 823                 return;
 824
 825 #ifndef USE_PAINTER
 826         if (fast_selection || mono_video) {
 827
 828                 /* selection only in one row ?*/
 829                 if (text->toggle_cursor.y == text->toggle_end_cursor.y) {
 830
 831                         /* only if anything is visible */
 832                         if (text->toggle_cursor.y - text->toggle_cursor.row->baseline - first < _height
 833                             && text->toggle_cursor.y - text->toggle_cursor.row->baseline +
 834                             text->toggle_cursor.row->height - first > 0) {
 835                                 top = text->toggle_cursor.y - text->toggle_cursor.row->baseline - first;
 836                                 bottom = top + text->toggle_cursor.row->height;
 837                                 if (top < 0) top = 0;
 838                                 if (bottom > _height) bottom = _height;
 839                                 XFillRectangle(fl_display, _window,
 840                                                getGC(gc_select),
 841                                                text->toggle_cursor.x+_offset_x,
 842                                                top+_offset_y,
 843                                                text->toggle_end_cursor.x  -
 844                                                text->toggle_cursor.x,
 845                                                bottom - top);
 846                         }
 847                 } else {
 848                         /* the toggle_cursor row first */
 849                         /* only if anything is visible */
 850                         if (text->toggle_cursor.y - text->toggle_cursor.row->baseline - first < _height
 851                             && text->toggle_cursor.y - text->toggle_cursor.row->baseline +
 852                             text->toggle_cursor.row->height - first > 0) {
 853                                 top = text->toggle_cursor.y - text->toggle_cursor.row->baseline - first;
 854                                 bottom = top + text->toggle_cursor.row->height;
 855                                 if (top<0)
 856                                         top = 0;
 857                                 if (bottom > _height)
 858                                         bottom = _height;
 859                                 XFillRectangle(fl_display, _window,
 860                                                getGC(gc_select),
 861                                                text->toggle_cursor.x+_offset_x,
 862                                                top+_offset_y,
 863                                                _width - text->toggle_cursor.x,
 864                                                bottom - top);
 865                         }
 866
 867                         /* the main body */
 868
 869                         if (text->toggle_cursor.row->next !=
 870                             text->toggle_end_cursor.row) {
 871                                 top = text->toggle_cursor.y
 872                                         - text->toggle_cursor.row->baseline
 873                                         + text->toggle_cursor.row->height;
 874                                 bottom = text->toggle_end_cursor.y
 875                                         - text->toggle_end_cursor.row->baseline;
 876
 877                                 if (top - first < 0)
 878                                         top = first;
 879                                 if (bottom - first < 0)
 880                                         bottom = first;
 881
 882                                 if (bottom - first > _height)
 883                                         bottom = first + _height;
 884                                 if (top - first > _height)
 885                                         top = first + _height;
 886
 887                                 if (top != bottom) {
 888                                         XFillRectangle(fl_display, _window,
 889                                                        getGC(gc_select),
 890                                                        0+_offset_x,
 891                                                        top - first+_offset_y,
 892                                                        _width,
 893                                                        bottom - top);
 894                                 }
 895                         }
 896
 897                         /* the toggle_end_cursor row last */
 898                         if (text->toggle_end_cursor.y - text->toggle_end_cursor.row->baseline - first < _height
 899                             && text->toggle_end_cursor.y - text->toggle_end_cursor.row->baseline +
 900                             text->toggle_end_cursor.row->height - first > 0) {
 901                                 top = text->toggle_end_cursor.y
 902                                         - text->toggle_end_cursor.row->baseline
 903                                         - first;
 904                                 bottom = top
 905                                         + text->toggle_end_cursor.row->height;
 906                                 if (top<0)
 907                                         top = 0;
 908                                 if (bottom > _height)
 909                                         bottom = _height;
 910                                 XFillRectangle(fl_display, _window,
 911                                                getGC(gc_select),
 912                                                0+_offset_x,
 913                                                top+_offset_y,
 914                                                text->toggle_end_cursor.x,
 915                                                bottom - top);
 916                         }
 917                 }
 918         } else {
 919 #endif
 920                 top = text->toggle_cursor.y
 921                         - text->toggle_cursor.row->baseline;
 922                 bottom = text->toggle_end_cursor.y
 923                         - text->toggle_end_cursor.row->baseline
 924                         + text->toggle_end_cursor.row->height;
 925
 926                 if (top - first < 0)
 927                         top = first;
 928                 if (bottom - first < 0)
 929                         bottom = first;
 930
 931                 if (bottom - first > _height)
 932                         bottom = first + _height;
 933                 if (top - first > _height)
 934                         top = first + _height;
 935
 936                 DrawFromTo(top - first, bottom - first);
 937                 expose(0, top - first, _width, bottom - first - (top - first));
 938 #ifndef USE_PAINTER
 939         }
 940 #endif
 941 }
 942
 943
 944 #ifndef USE_PAINTER
 945 void LyXScreen::drawTableLine(int baseline, int x, int length, bool on_off)
 946 {
 947         GC gc;
 948         if (on_off)
 949                 gc = getGC(gc_thin_on_off_line);
 950         else
 951                 gc = getGC(gc_copy);
 952         drawLine(gc,
 953                  x,
 954                  baseline,
 955                  x + length,
 956                  baseline);
 957 }
 958 #endif
 959
 960
 961 #ifndef USE_PAINTER
 962 void LyXScreen::drawVerticalTableLine(int x, int y1, int y2, bool on_off)
 963 {
 964         GC gc;
 965         if (on_off)
 966                 gc = getGC(gc_thin_on_off_line);
 967         else
 968                 gc = getGC(gc_copy);
 969         drawLine(gc,
 970                  x,
 971                  y1,
 972                  x,
 973                  y2);
 974 }
 975 #endif
 976
 977
 978 #ifndef USE_PAINTER
 979 void LyXScreen::drawFrame(int /*ft*/, int x, int y, int w, int h,
 980                           FL_COLOR /*col*/, int /*b*/)
 981 {
 982 // Implement this using X11 calls, and the repaint problems are gone!
 983 // At least, I think that should do it since we only have them after
 984 // one of these buttons are displayed now! Lars, it seems you've hit the
 985 // nail :-) (Asger)
 986 //      fl_winset(foreground);
 987 //      fl_drw_frame(ft, x,  y,  w,  h, col, b);
 988         // This should be changed to draw a button like frame, in the
 989         // mean time we'll just use a regular rectangle
 990
 991          // I want the buttons back before 0.12. OK, this is very simple,
 992          // like what is done in xforms sources.  (Ale)
 993
 994         // This one is too dirty. Get rid of it.
 995         extern GC fl_gc;
 996
 997         // Please comment this annonymous variable.
 998         int d = 2;
 999
1000         // I think these calls to fl_color might make xforms sometimes
1001         // draw the wrong color on other objects.
1002         fl_color(FL_TOP_BCOL);
1003         XFillRectangle(fl_display, foreground, fl_gc,
1004                        x - d, y - d, w + 2 * d, d);
1005         fl_color(FL_BOTTOM_BCOL);
1006         XFillRectangle(fl_display, foreground, fl_gc,
1007                        x - d, y + h, w + 2 * d, d);
1008
1009         // Now a couple of trapezoids
1010         XPoint pl[4], pr[4];
1011
1012         pl[0].x = x - d;   pl[0].y = y - d;
1013         pl[1].x = x - d;   pl[1].y = y + h + d;
1014         pl[2].x = x;     pl[2].y = y + h;
1015         pl[3].x = x;     pl[3].y = y;
1016
1017         pr[0].x = x + w + d; pr[0].y = y - d;
1018         pr[1].x = x + w + d; pr[1].y = y + h + d;
1019         pr[2].x = x + w;   pr[2].y = y + h;
1020         pr[3].x = x + w;   pr[3].y = y;
1021
1022         fl_color(FL_LEFT_BCOL);
1023         XFillPolygon(fl_display,
1024                      foreground,
1025                      fl_gc, pl, 4,
1026                      Convex, CoordModeOrigin);
1027         fl_color(FL_RIGHT_BCOL);
1028         XFillPolygon(fl_display,
1029                      foreground,
1030                      fl_gc, pr, 4,
1031                      Convex, CoordModeOrigin);
1032 }
1033 #endif