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 #ifdef NEW_WA
  53                      Pixmap p,
  54 #endif
  55                      Dimension width,
  56                      Dimension height,
  57                      Dimension offset_x,
  58                      Dimension offset_y,
  59                      LyXText *text_ptr)
  60         : owner(o), text(text_ptr), _window(window),
  61         _width(width), _height(height),
  62         _offset_x(offset_x), _offset_y(offset_y)
  63 {
  64         first = 0;
  65
  66         /* the cursor isnt yet visible */
  67         cursor_visible = false;
  68         screen_refresh_y = -1;
  69
  70         /* create the foreground pixmap */
  71 #ifdef NEW_WA
  72         foreground = p;
  73 #else
  74         foreground = XCreatePixmap (fl_display,
  75                                     fl_root,
  76                                     _width, _height,
  77                                     fl_get_visual_depth());
  78 #endif
  79         cursor_pixmap = 0;
  80         cursor_pixmap_x = 0;
  81         cursor_pixmap_y = 0;
  82         cursor_pixmap_w = 0;
  83         cursor_pixmap_h = 0;
  84
  85 #ifdef USE_PAINTER
  86         // We need this GC
  87         gc_copy = createGC();
  88 #endif
  89 }
  90
  91
  92 // Destructor
  93 LyXScreen::~LyXScreen()
  94 {
  95 #ifndef NEW_WA
  96         XFreePixmap(fl_display, foreground);
  97 #endif
  98 }
  99
 100
 101 void LyXScreen::Redraw()
 102 {
 103         DrawFromTo(0, _height);
 104         screen_refresh_y = -1;
 105         expose(0, 0, _width, _height);
 106         if (cursor_visible) {
 107                 cursor_visible = false;
 108                 ShowCursor();
 109         }
 110 }
 111
 112
 113 #ifdef USE_PAINTER
 114 void LyXScreen::expose(int x, int y, int exp_width, int exp_height)
 115 {
 116         XCopyArea(fl_display,
 117                   foreground,
 118                   _window,
 119                   gc_copy,
 120                   x, y,
 121                   exp_width, exp_height,
 122                   x+_offset_x, y+_offset_y);
 123 }
 124 #else
 125 void LyXScreen::expose(int x, int y, int exp_width, int exp_height)
 126 {
 127         XCopyArea(fl_display,
 128                   foreground,
 129                   _window,
 130                   getGC(gc_copy),
 131                   x, y,
 132                   exp_width, exp_height,
 133                   x+_offset_x, y+_offset_y);
 134 }
 135 #endif
 136
 137
 138 #ifdef USE_PAINTER
 139 void LyXScreen::DrawFromTo(int y1, int y2)
 140 {
 141         long y_text = first + y1;
 142
 143         /* get the first needed row */
 144         Row * row = text->GetRowNearY(y_text);
 145         /* y_text is now the real beginning of the row */
 146
 147         long y = y_text - first;
 148         /* y1 is now the real beginning of row on the screen */
 149
 150         while (row != 0 && y < y2) {
 151
 152                 text->GetVisibleRow(y, row, y + first);
 153                 y += row->height;
 154                 row = row -> next;
 155
 156         }
 157
 158         /* maybe we have to clear the screen at the bottom */
 159         if (y < y2) {
 160                 owner->painter().fillRectangle(0, y, _width, y2 - y,
 161                                                LColor::bottomarea);
 162         }
 163 }
 164 #else
 165 void LyXScreen::DrawFromTo(int y1, int y2)
 166 {
 167         long y_text = first + y1;
 168
 169         /* get the first needed row */
 170         Row * row = text->GetRowNearY(y_text);
 171         /* y_text is now the real beginning of the row */
 172
 173         long y = y_text - first;
 174         /* y1 is now the real beginning of row on the screen */
 175
 176         while (row != 0 && y < y2) {
 177
 178                 text->GetVisibleRow(*this, y, row, y + first);
 179                 y += row->height;
 180                 row = row -> next;
 181
 182         }
 183
 184         /* maybe we have to clear the screen at the bottom */
 185         if (y < y2) {
 186                 fillRectangle(gc_lighted,
 187                               0,
 188                               y,
 189                               _width,
 190                               y2 - y);
 191         }
 192 }
 193 #endif
 194
 195
 196 void LyXScreen::DrawOneRow(Row * row, long & y_text)
 197 {
 198         long y = y_text - first;
 199
 200         if (y + row->height > 0 && y - row->height <= _height) {
 201                 /* ok there is something visible */
 202 #ifdef USE_PAINTER
 203                 text->GetVisibleRow(y, row, y + first);
 204 #else
 205                 text->GetVisibleRow(*this, y, row, y + first);
 206 #endif
 207         }
 208         y_text+= row->height;
 209 }
 210
 211
 212 /* draws the screen, starting with textposition y. uses as much already
 213 * printed pixels as possible */
 214 #ifdef USE_PAINTER
 215 void LyXScreen::Draw(long  y)
 216 {
 217         if (cursor_visible) HideCursor();
 218
 219         if (y < 0) y = 0;
 220         long old_first = first;
 221         first = y;
 222
 223         /* is any optimiziation possible? */
 224         if ((y - old_first) < _height
 225             && (old_first - y) < _height) {
 226                 if (first < old_first) {
 227                         DrawFromTo(0, old_first - first);
 228                         XCopyArea (fl_display,
 229                                    _window,
 230                                    _window,
 231                                    gc_copy,
 232                                    _offset_x, _offset_y,
 233                                    _width , _height - old_first + first,
 234                                    _offset_x, _offset_y + old_first - first);
 235                         // expose the area drawn
 236                         expose(0, 0, _width, old_first - first);
 237                 } else  {
 238                         DrawFromTo(_height + old_first - first, _height);
 239                         XCopyArea (fl_display,
 240                                    _window,
 241                                    _window,
 242                                    gc_copy,
 243                                    _offset_x, _offset_y + first - old_first,
 244                                    _width , _height + old_first - first,
 245                                    _offset_x, _offset_y);
 246                         // expose the area drawn
 247                         expose(0, _height + old_first - first,
 248                                _width, first - old_first);
 249                 }
 250         } else {
 251                 /* make a dumb new-draw */
 252                 DrawFromTo(0, _height);
 253                 expose(0, 0, _width, _height);
 254         }
 255 }
 256 #else
 257 void LyXScreen::Draw(long  y)
 258 {
 259         if (cursor_visible) HideCursor();
 260
 261         if (y < 0) y = 0;
 262         long old_first = first;
 263         first = y;
 264
 265         /* is any optimiziation possible? */
 266         if ((y - old_first) < _height
 267             && (old_first - y) < _height) {
 268                 if (first < old_first) {
 269                         DrawFromTo(0, old_first - first);
 270                         XCopyArea (fl_display,
 271                                    _window,
 272                                    _window,
 273                                    getGC(gc_copy),
 274                                    _offset_x, _offset_y,
 275                                    _width , _height - old_first + first,
 276                                    _offset_x, _offset_y + old_first - first);
 277                         // expose the area drawn
 278                         expose(0, 0, _width, old_first - first);
 279                 } else  {
 280                         DrawFromTo(_height + old_first - first, _height);
 281                         XCopyArea (fl_display,
 282                                    _window,
 283                                    _window,
 284                                    getGC(gc_copy),
 285                                    _offset_x, _offset_y + first - old_first,
 286                                    _width , _height + old_first - first,
 287                                    _offset_x, _offset_y);
 288                         // expose the area drawn
 289                         expose(0, _height + old_first - first,
 290                                _width, first - old_first);
 291                 }
 292         } else {
 293                 /* make a dumb new-draw */
 294                 DrawFromTo(0, _height);
 295                 expose(0, 0, _width, _height);
 296         }
 297 }
 298 #endif
 299
 300
 301 void LyXScreen::ShowCursor()
 302 {
 303         long x = 0;
 304         long y1 = 0;
 305         long y2 = 0;
 306
 307         if (cursor_visible) return;
 308
 309         x = text->cursor.x;
 310
 311         y1 = text->cursor.y - text->real_current_font.maxAscent() - first;
 312         if (y1 < 0) y1 = 0;
 313
 314         y2 = text->cursor.y + text->real_current_font.maxDescent() - first;
 315         if (y2 > _height) y2 = _height;
 316
 317         // Secure against very strange situations
 318         if (y2 < y1) y2 = y1;
 319
 320 #ifndef USE_PAINTER
 321         if (fast_selection || mono_video) {
 322                 if (y2 > 0 && y1 < _height) {
 323                         XDrawLine(fl_display,
 324                                   _window, getGC(gc_select),
 325                                   x + _offset_x,
 326                                   y1 + _offset_y,
 327                                   x + _offset_x,
 328                                   y2 + _offset_y);
 329                         cursor_visible = true;
 330                 }
 331         } else {
 332 #endif
 333                 if (cursor_pixmap){
 334                         XFreePixmap(fl_display, cursor_pixmap);
 335                         cursor_pixmap = 0;
 336                 }
 337
 338                 if (y2 > 0 && y1 < _height) {
 339                         cursor_pixmap_w = 1;
 340                         cursor_pixmap_h = y2 - y1 + 1;
 341                         cursor_pixmap_x = x;
 342                         cursor_pixmap_y = y1;
 343                         cursor_pixmap =
 344                                 XCreatePixmap(fl_display,
 345                                               fl_root,
 346                                               cursor_pixmap_w,
 347                                               cursor_pixmap_h,
 348                                               fl_get_visual_depth());
 349 #ifdef USE_PAINTER
 350                         XCopyArea(fl_display,
 351                                   _window,
 352                                   cursor_pixmap,
 353                                   gc_copy,
 354                                   _offset_x + cursor_pixmap_x,
 355                                   _offset_y + cursor_pixmap_y,
 356                                   cursor_pixmap_w, cursor_pixmap_h,
 357                                   0, 0);
 358                         XDrawLine(fl_display,
 359                                   _window, gc_copy,
 360                                   x + _offset_x,
 361                                   y1 + _offset_y,
 362                                   x + _offset_x,
 363                                   y2 + _offset_y);
 364 #else
 365                         XCopyArea(fl_display,
 366                                   _window,
 367                                   cursor_pixmap,
 368                                   getGC(gc_copy),
 369                                   _offset_x + cursor_pixmap_x,
 370                                   _offset_y + cursor_pixmap_y,
 371                                   cursor_pixmap_w, cursor_pixmap_h,
 372                                   0, 0);
 373                         XDrawLine(fl_display,
 374                                   _window,
 375                                   getGC(gc_copy),
 376                                   x + _offset_x,
 377                                   y1 + _offset_y,
 378                                   x + _offset_x,
 379                                   y2 + _offset_y);
 380 #endif
 381                         cursor_visible = true;
 382                 }
 383 #ifndef USE_PAINTER
 384         }
 385 #endif
 386 }
 387
 388
 389 /* returns 1 if first has changed, otherwise 0 */
 390 int LyXScreen::FitManualCursor(long /*x*/, long y, int asc, int desc)
 391 {
 392         long  newtop = first;
 393
 394         if (y + desc  - first >= _height)
 395                 newtop = y - 3*_height / 4;   /* the scroll region must be so big!! */
 396         else if (y - asc < first
 397                  && first > 0) {
 398                 newtop = y - _height / 4;
 399         }
 400         if (newtop < 0)
 401                 newtop = 0;
 402
 403         if (newtop != first){
 404                 Draw(newtop);
 405                 first = newtop;
 406                 return 1;
 407         }
 408         return 0;
 409 }
 410
 411
 412 void  LyXScreen::HideManualCursor(long x, long y, int asc, int desc)
 413 {
 414 #ifdef MONO
 415         if (fast_selection || mono_video)
 416                 ShowManualCursor(x, y, asc, desc);
 417         else
 418 #endif
 419                 HideCursor();
 420 }
 421
 422
 423 void  LyXScreen::ShowManualCursor(long x, long y, int asc, int desc)
 424 {
 425         long y1 = 0;
 426         long y2 = 0;
 427
 428         y1 = y - first - asc;
 429         if (y1 < 0)
 430                 y1 = 0;
 431         y2 = y -first + desc;
 432         if (y2 > _height)
 433                 y2 = _height;
 434
 435 #ifndef USE_PAINTER
 436         if (fast_selection || mono_video) {
 437                 if (y2 > 0 && y1 < _height) {
 438                         XDrawLine(fl_display,
 439                                   _window, getGC(gc_select),
 440                                   x+_offset_x,
 441                                   y1+_offset_y,
 442                                   x+_offset_x,
 443                                   y2+_offset_y);
 444                 }
 445         } else {
 446 #endif
 447                 if (cursor_pixmap){
 448                         XFreePixmap(fl_display, cursor_pixmap);
 449                         cursor_pixmap = 0;
 450                 }
 451
 452                 if (y2 > 0 && y1 < _height) {
 453                         cursor_pixmap_w = 1;
 454                         cursor_pixmap_h = y2 - y1 + 1;
 455                         cursor_pixmap_x = x,
 456                                 cursor_pixmap_y = y1;
 457                         cursor_pixmap =
 458                                 XCreatePixmap (fl_display,
 459                                                fl_root,
 460                                                cursor_pixmap_w,
 461                                                cursor_pixmap_h,
 462                                                fl_get_visual_depth());
 463 #ifdef USE_PAINTER
 464                         XCopyArea (fl_display,
 465                                    _window,
 466                                    cursor_pixmap,
 467                                    gc_copy,
 468                                    _offset_x + cursor_pixmap_x,
 469                                    _offset_y + cursor_pixmap_y,
 470                                    cursor_pixmap_w,
 471                                    cursor_pixmap_h,
 472                                    0, 0);
 473                         XDrawLine(fl_display,
 474                                   _window, gc_copy,
 475                                   x+_offset_x,
 476                                   y1+_offset_y,
 477                                   x+_offset_x,
 478                                   y2+_offset_y);
 479 #else
 480                         XCopyArea (fl_display,
 481                                    _window,
 482                                    cursor_pixmap,
 483                                    getGC(gc_copy),
 484                                    _offset_x + cursor_pixmap_x,
 485                                    _offset_y + cursor_pixmap_y,
 486                                    cursor_pixmap_w,
 487                                    cursor_pixmap_h,
 488                                    0, 0);
 489                         XDrawLine(fl_display,
 490                                   _window,
 491                                   getGC(gc_copy),
 492                                   x+_offset_x,
 493                                   y1+_offset_y,
 494                                   x+_offset_x,
 495                                   y2+_offset_y);
 496 #endif
 497                 }
 498                 cursor_visible = true;
 499 #ifndef USE_PAINTER
 500         }
 501 #endif
 502 }
 503
 504
 505 void LyXScreen::HideCursor()
 506 {
 507         if (!cursor_visible) return;
 508
 509 #ifndef USE_PAINTER
 510         if (fast_selection || mono_video) {
 511                 cursor_visible = false;
 512                 ShowCursor();
 513                 cursor_visible = false;
 514         } else {
 515 #endif
 516                 if (cursor_pixmap){
 517 #ifdef USE_PAINTER
 518                         XCopyArea (fl_display,
 519                                    cursor_pixmap,
 520                                    _window,
 521                                    gc_copy,
 522                                    0, 0,
 523                                    cursor_pixmap_w, cursor_pixmap_h,
 524                                    cursor_pixmap_x + _offset_x,
 525                                    cursor_pixmap_y + _offset_y);
 526 #else
 527                         XCopyArea (fl_display,
 528                                    cursor_pixmap,
 529                                    _window,
 530                                    getGC(gc_copy),
 531                                    0, 0,
 532                                    cursor_pixmap_w, cursor_pixmap_h,
 533                                    cursor_pixmap_x + _offset_x,
 534                                    cursor_pixmap_y + _offset_y);
 535 #endif
 536                 }
 537                 cursor_visible = false;
 538 #ifndef USE_PAINTER
 539         }
 540 #endif
 541 }
 542
 543
 544 void LyXScreen::CursorToggle()
 545 {
 546         if (cursor_visible)
 547                 HideCursor();
 548         else
 549                 ShowCursor();
 550 }
 551
 552
 553 /* returns a new top so that the cursor is visible */
 554 long LyXScreen::TopCursorVisible()
 555 {
 556         long newtop = first;
 557
 558         if (text->cursor.y
 559             - text->cursor.row->baseline
 560             + text->cursor.row->height
 561             - first >= _height) {
 562                 if (text->cursor.row->height < _height
 563                     && text->cursor.row->height > _height/4)
 564                         newtop = text->cursor.y
 565                                 + text->cursor.row->height
 566                                 - text->cursor.row->baseline - _height;
 567                 else
 568                         newtop = text->cursor.y
 569                                 - 3*_height / 4;   /* the scroll region must be so big!! */
 570         } else if (text->cursor.y - text->cursor.row->baseline < first
 571                    && first > 0) {
 572                 if (text->cursor.row->height < _height
 573                     && text->cursor.row->height > _height/4)
 574                         newtop = text->cursor.y - text->cursor.row->baseline;
 575                 else {
 576                         newtop = text->cursor.y - _height / 4;
 577                         if (newtop > first)
 578                                 newtop = first;
 579                 }
 580         }
 581         if (newtop < 0)
 582                 newtop = 0;
 583
 584         return newtop;
 585 }
 586
 587
 588 /* scrolls the screen so that the cursor is visible, if necessary.
 589 * returns 1 if a change was made, otherwise 0 */
 590 int LyXScreen::FitCursor()
 591 {
 592         /* is a change necessary */
 593         long  newtop = TopCursorVisible();
 594         int result = (newtop != first);
 595         if (result)
 596                 Draw(newtop);
 597         return result;
 598 }
 599
 600
 601 void LyXScreen::Update()
 602 {
 603         long y = 0;
 604
 605         if (text->status == LyXText::NEED_MORE_REFRESH
 606             || screen_refresh_y > -1 ) {
 607                 if (screen_refresh_y > -1
 608                     && screen_refresh_y < text->refresh_y)
 609                         y = screen_refresh_y;
 610                 else
 611                         y = text->refresh_y;
 612
 613                 if (y < first) y = first;
 614
 615                 DrawFromTo(y - first, _height);
 616                 text->refresh_y = 0;
 617                 text->status = LyXText::UNCHANGED;
 618                 screen_refresh_y = -1;
 619                 expose(0, y-first, _width, _height - (y - first));
 620         } else if (text->status == LyXText::NEED_VERY_LITTLE_REFRESH) {
 621                 /* ok I will update the current cursor row */
 622                 y = text->refresh_y;
 623                 DrawOneRow(text->refresh_row, y);
 624                 text->status = LyXText::UNCHANGED;
 625                 expose(0, text->refresh_y-first,
 626                        _width, text->refresh_row->height);
 627         }
 628 }
 629
 630
 631 void LyXScreen::SmallUpdate()
 632 {
 633         Row * row = 0;
 634         long y = 0;
 635         long y2 = 0;
 636
 637         if (text->status == LyXText::NEED_MORE_REFRESH){
 638                 /* ok I will update till the current cursor row */
 639                 row = text->refresh_row;
 640                 y = text->refresh_y;
 641                 y2 = y;
 642
 643                 if (y > text->cursor.y) {
 644                         Update();
 645                         return;
 646                 }
 647
 648                 while (row && row != text->cursor.row && y < first + _height) {
 649                         DrawOneRow(row, y);
 650                         row = row->next;
 651                 }
 652
 653                 DrawOneRow(row, y);
 654                 screen_refresh_y = y;
 655                 screen_refresh_row = row->next;
 656                 text->status = LyXText::UNCHANGED;
 657                 // Is the right regin exposed?
 658                 expose(0, y2-first, _width, y-y2);
 659         } else if (text->status == LyXText::NEED_VERY_LITTLE_REFRESH) {
 660                 /* ok I will update the current cursor row */
 661                 row = text->refresh_row;
 662                 y = text->refresh_y;
 663                 DrawOneRow(row, y);
 664                 text->status = LyXText::UNCHANGED;
 665                 expose(0, text->refresh_y - first,
 666                        _width, row->height);
 667         }
 668 }
 669
 670
 671 void LyXScreen::ToggleSelection(bool kill_selection)
 672 {
 673         /* only if there is a selection */
 674         if (!text->selection)
 675                 return;
 676
 677         long top = 0;
 678         long bottom = 0;
 679
 680 #ifndef USE_PAINTER
 681         if (fast_selection || mono_video) {
 682
 683                 /* selection only in one row ?*/
 684                 if (text->sel_start_cursor.y == text->sel_end_cursor.y) {
 685
 686                         /* only if something is visible */
 687                         if (text->sel_start_cursor.y
 688                             - text->sel_start_cursor.row->baseline
 689                             - first < _height
 690                             && text->sel_start_cursor.y
 691                             - text->sel_start_cursor.row->baseline +
 692                             text->sel_start_cursor.row->height - first > 0) {
 693                                 top = text->sel_start_cursor.y
 694                                         - text->sel_start_cursor.row->baseline
 695                                         - first;
 696                                 bottom = top
 697                                         + text->sel_start_cursor.row->height;
 698                                 if (top<0)
 699                                         top = 0;
 700                                 if (bottom > _height)
 701                                         bottom = _height;
 702                                 XFillRectangle(fl_display, _window,
 703                                                getGC(gc_select),
 704                                                text->sel_start_cursor.x
 705                                                +_offset_x,
 706                                                top+_offset_y,
 707                                                text->sel_end_cursor.x
 708                                                - text->sel_start_cursor.x,
 709                                                bottom - top);
 710                         }
 711                 } else {
 712                         /* the sel_start_cursor row first */
 713                         /* only if anything is visible */
 714                         if (text->sel_start_cursor.y
 715                             - text->sel_start_cursor.row->baseline
 716                             - first < _height
 717                             && text->sel_start_cursor.y
 718                             - text->sel_start_cursor.row->baseline +
 719                             text->sel_start_cursor.row->height - first > 0) {
 720                                 top = text->sel_start_cursor.y
 721                                         - text->sel_start_cursor.row->baseline
 722                                         - first;
 723                                 bottom = top
 724                                         + text->sel_start_cursor.row->height;
 725                                 if (top<0)
 726                                         top = 0;
 727                                 if (bottom > _height)
 728                                         bottom = _height;
 729                                 XFillRectangle(fl_display, _window,
 730                                                getGC(gc_select),
 731                                                text->sel_start_cursor.x
 732                                                +_offset_x,
 733                                                top+_offset_y,
 734                                                _width
 735                                                - text->sel_start_cursor.x,
 736                                                bottom - top);
 737                         }
 738
 739                         /* the main body */
 740
 741                         if (text->sel_start_cursor.row->next !=
 742                             text->sel_end_cursor.row) {
 743                                 top = text->sel_start_cursor.y
 744                                         - text->sel_start_cursor.row->baseline
 745                                         + text->sel_start_cursor.row->height;
 746                                 bottom = text->sel_end_cursor.y
 747                                         - text->sel_end_cursor.row->baseline;
 748
 749                                 if (top - first < 0)
 750                                         top = first;
 751                                 if (bottom - first < 0)
 752                                         bottom = first;
 753
 754                                 if (bottom - first > _height)
 755                                         bottom = first + _height;
 756                                 if (top - first > _height)
 757                                         top = first + _height;
 758
 759                                 if (top != bottom) {
 760                                         XFillRectangle(fl_display,
 761                                                        _window,
 762                                                        getGC(gc_select),
 763                                                        0+_offset_x,
 764                                                        top - first+_offset_y,
 765                                                        _width,
 766                                                        bottom - top);
 767                                 }
 768                         }
 769
 770                         /* the sel_end_cursor row last */
 771                         if (text->sel_end_cursor.y
 772                             - text->sel_end_cursor.row->baseline
 773                             - first < _height
 774                             && text->sel_end_cursor.y
 775                             - text->sel_end_cursor.row->baseline +
 776                             text->sel_end_cursor.row->height - first > 0) {
 777                                 top = text->sel_end_cursor.y
 778                                         - text->sel_end_cursor.row->baseline
 779                                         - first;
 780                                 bottom = top
 781                                         + text->sel_end_cursor.row->height;
 782                                 if (top<0)
 783                                         top = 0;
 784                                 if (bottom > _height)
 785                                         bottom = _height;
 786                                 XFillRectangle(fl_display, _window,
 787                                                getGC(gc_select),
 788                                                0+_offset_x,
 789                                                top+_offset_y,
 790                                                text->sel_end_cursor.x,
 791                                                bottom - top);
 792                         }
 793                 }
 794         } else {
 795 #endif
 796                 top = text->sel_start_cursor.y
 797                         - text->sel_start_cursor.row->baseline;
 798                 bottom = text->sel_end_cursor.y
 799                         - text->sel_end_cursor.row->baseline
 800                         + text->sel_end_cursor.row->height;
 801
 802                 if (top - first < 0)
 803                         top = first;
 804                 if (bottom - first < 0)
 805                         bottom = first;
 806
 807                 if (bottom - first > _height)
 808                         bottom = first + _height;
 809                 if (top - first > _height)
 810                         top = first + _height;
 811
 812                 if (kill_selection)
 813                         text->selection = 0;
 814                 DrawFromTo(top - first, bottom - first);
 815                 expose(0, top - first, _width, bottom - first - (top - first));
 816 #ifndef USE_PAINTER
 817         }
 818 #endif
 819 }
 820
 821
 822 void LyXScreen::ToggleToggle()
 823 {
 824         long top = 0;
 825         long bottom = 0;
 826
 827         if (text->toggle_cursor.par == text->toggle_end_cursor.par
 828             && text->toggle_cursor.pos == text->toggle_end_cursor.pos)
 829                 return;
 830
 831 #ifndef USE_PAINTER
 832         if (fast_selection || mono_video) {
 833
 834                 /* selection only in one row ?*/
 835                 if (text->toggle_cursor.y == text->toggle_end_cursor.y) {
 836
 837                         /* only if anything is visible */
 838                         if (text->toggle_cursor.y - text->toggle_cursor.row->baseline - first < _height
 839                             && text->toggle_cursor.y - text->toggle_cursor.row->baseline +
 840                             text->toggle_cursor.row->height - first > 0) {
 841                                 top = text->toggle_cursor.y - text->toggle_cursor.row->baseline - first;
 842                                 bottom = top + text->toggle_cursor.row->height;
 843                                 if (top < 0) top = 0;
 844                                 if (bottom > _height) bottom = _height;
 845                                 XFillRectangle(fl_display, _window,
 846                                                getGC(gc_select),
 847                                                text->toggle_cursor.x+_offset_x,
 848                                                top+_offset_y,
 849                                                text->toggle_end_cursor.x  -
 850                                                text->toggle_cursor.x,
 851                                                bottom - top);
 852                         }
 853                 } else {
 854                         /* the toggle_cursor row first */
 855                         /* only if anything is visible */
 856                         if (text->toggle_cursor.y - text->toggle_cursor.row->baseline - first < _height
 857                             && text->toggle_cursor.y - text->toggle_cursor.row->baseline +
 858                             text->toggle_cursor.row->height - first > 0) {
 859                                 top = text->toggle_cursor.y - text->toggle_cursor.row->baseline - first;
 860                                 bottom = top + text->toggle_cursor.row->height;
 861                                 if (top<0)
 862                                         top = 0;
 863                                 if (bottom > _height)
 864                                         bottom = _height;
 865                                 XFillRectangle(fl_display, _window,
 866                                                getGC(gc_select),
 867                                                text->toggle_cursor.x+_offset_x,
 868                                                top+_offset_y,
 869                                                _width - text->toggle_cursor.x,
 870                                                bottom - top);
 871                         }
 872
 873                         /* the main body */
 874
 875                         if (text->toggle_cursor.row->next !=
 876                             text->toggle_end_cursor.row) {
 877                                 top = text->toggle_cursor.y
 878                                         - text->toggle_cursor.row->baseline
 879                                         + text->toggle_cursor.row->height;
 880                                 bottom = text->toggle_end_cursor.y
 881                                         - text->toggle_end_cursor.row->baseline;
 882
 883                                 if (top - first < 0)
 884                                         top = first;
 885                                 if (bottom - first < 0)
 886                                         bottom = first;
 887
 888                                 if (bottom - first > _height)
 889                                         bottom = first + _height;
 890                                 if (top - first > _height)
 891                                         top = first + _height;
 892
 893                                 if (top != bottom) {
 894                                         XFillRectangle(fl_display, _window,
 895                                                        getGC(gc_select),
 896                                                        0+_offset_x,
 897                                                        top - first+_offset_y,
 898                                                        _width,
 899                                                        bottom - top);
 900                                 }
 901                         }
 902
 903                         /* the toggle_end_cursor row last */
 904                         if (text->toggle_end_cursor.y - text->toggle_end_cursor.row->baseline - first < _height
 905                             && text->toggle_end_cursor.y - text->toggle_end_cursor.row->baseline +
 906                             text->toggle_end_cursor.row->height - first > 0) {
 907                                 top = text->toggle_end_cursor.y
 908                                         - text->toggle_end_cursor.row->baseline
 909                                         - first;
 910                                 bottom = top
 911                                         + text->toggle_end_cursor.row->height;
 912                                 if (top<0)
 913                                         top = 0;
 914                                 if (bottom > _height)
 915                                         bottom = _height;
 916                                 XFillRectangle(fl_display, _window,
 917                                                getGC(gc_select),
 918                                                0+_offset_x,
 919                                                top+_offset_y,
 920                                                text->toggle_end_cursor.x,
 921                                                bottom - top);
 922                         }
 923                 }
 924         } else {
 925 #endif
 926                 top = text->toggle_cursor.y
 927                         - text->toggle_cursor.row->baseline;
 928                 bottom = text->toggle_end_cursor.y
 929                         - text->toggle_end_cursor.row->baseline
 930                         + text->toggle_end_cursor.row->height;
 931
 932                 if (top - first < 0)
 933                         top = first;
 934                 if (bottom - first < 0)
 935                         bottom = first;
 936
 937                 if (bottom - first > _height)
 938                         bottom = first + _height;
 939                 if (top - first > _height)
 940                         top = first + _height;
 941
 942                 DrawFromTo(top - first, bottom - first);
 943                 expose(0, top - first, _width, bottom - first - (top - first));
 944 #ifndef USE_PAINTER
 945         }
 946 #endif
 947 }
 948
 949
 950 #ifndef USE_PAINTER
 951 void LyXScreen::drawTableLine(int baseline, int x, int length, bool on_off)
 952 {
 953         GC gc;
 954         if (on_off)
 955                 gc = getGC(gc_thin_on_off_line);
 956         else
 957                 gc = getGC(gc_copy);
 958         drawLine(gc,
 959                  x,
 960                  baseline,
 961                  x + length,
 962                  baseline);
 963 }
 964 #endif
 965
 966
 967 #ifndef USE_PAINTER
 968 void LyXScreen::drawVerticalTableLine(int x, int y1, int y2, bool on_off)
 969 {
 970         GC gc;
 971         if (on_off)
 972                 gc = getGC(gc_thin_on_off_line);
 973         else
 974                 gc = getGC(gc_copy);
 975         drawLine(gc,
 976                  x,
 977                  y1,
 978                  x,
 979                  y2);
 980 }
 981 #endif
 982
 983
 984 #ifndef USE_PAINTER
 985 void LyXScreen::drawFrame(int /*ft*/, int x, int y, int w, int h,
 986                           FL_COLOR /*col*/, int /*b*/)
 987 {
 988 // Implement this using X11 calls, and the repaint problems are gone!
 989 // At least, I think that should do it since we only have them after
 990 // one of these buttons are displayed now! Lars, it seems you've hit the
 991 // nail :-) (Asger)
 992 //      fl_winset(foreground);
 993 //      fl_drw_frame(ft, x,  y,  w,  h, col, b);
 994         // This should be changed to draw a button like frame, in the
 995         // mean time we'll just use a regular rectangle
 996
 997          // I want the buttons back before 0.12. OK, this is very simple,
 998          // like what is done in xforms sources.  (Ale)
 999
1000         // This one is too dirty. Get rid of it.
1001         extern GC fl_gc;
1002
1003         // Please comment this annonymous variable.
1004         int d = 2;
1005
1006         // I think these calls to fl_color might make xforms sometimes
1007         // draw the wrong color on other objects.
1008         fl_color(FL_TOP_BCOL);
1009         XFillRectangle(fl_display, foreground, fl_gc,
1010                        x - d, y - d, w + 2 * d, d);
1011         fl_color(FL_BOTTOM_BCOL);
1012         XFillRectangle(fl_display, foreground, fl_gc,
1013                        x - d, y + h, w + 2 * d, d);
1014
1015         // Now a couple of trapezoids
1016         XPoint pl[4], pr[4];
1017
1018         pl[0].x = x - d;   pl[0].y = y - d;
1019         pl[1].x = x - d;   pl[1].y = y + h + d;
1020         pl[2].x = x;     pl[2].y = y + h;
1021         pl[3].x = x;     pl[3].y = y;
1022
1023         pr[0].x = x + w + d; pr[0].y = y - d;
1024         pr[1].x = x + w + d; pr[1].y = y + h + d;
1025         pr[2].x = x + w;   pr[2].y = y + h;
1026         pr[3].x = x + w;   pr[3].y = y;
1027
1028         fl_color(FL_LEFT_BCOL);
1029         XFillPolygon(fl_display,
1030                      foreground,
1031                      fl_gc, pl, 4,
1032                      Convex, CoordModeOrigin);
1033         fl_color(FL_RIGHT_BCOL);
1034         XFillPolygon(fl_display,
1035                      foreground,
1036                      fl_gc, pr, 4,
1037                      Convex, CoordModeOrigin);
1038 }
1039 #endif