src/rowpainter.C

   1 /**
   2  * \file rowpainter.C
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author various
   7  * \author John Levon
   8  *
   9  * Full author contact details are available in file CREDITS
  10  */
  11
  12 #include <config.h>
  13
  14 #include <algorithm>
  15
  16 #include "frontends/Painter.h"
  17 #include "frontends/screen.h"
  18 #include "frontends/font_metrics.h"
  19 #include "support/LAssert.h"
  20 #include "paragraph.h"
  21 #include "support/textutils.h"
  22
  23 #include "insets/insettext.h"
  24 #include "ParagraphParameters.h"
  25 #include "BufferView.h"
  26 #include "buffer.h"
  27 #include "gettext.h"
  28 #include "language.h"
  29 #include "encoding.h"
  30 #include "lyxtext.h"
  31 #include "lyxrow.h"
  32 #include "rowpainter.h"
  33 #include "lyxrc.h"
  34
  35
  36 using std::max;
  37 using lyx::pos_type;
  38
  39 extern int PAPER_MARGIN;
  40 extern int CHANGEBAR_MARGIN;
  41 extern int LEFT_MARGIN;
  42
  43 namespace {
  44
  45 // "temporary". We'll never get to use more
  46 // references until we start adding hacks like
  47 // these until other places catch up.
  48 BufferView * perv(BufferView const & bv)
  49 {
  50         return const_cast<BufferView *>(&bv);
  51 }
  52
  53 } // namespace anon
  54
  55
  56 RowPainter::RowPainter(BufferView const & bv, LyXText const & text, Row const & row)
  57         : bv_(bv), pain_(bv_.painter()), text_(text), row_(row), par_(*row.par())
  58 {
  59 }
  60
  61
  62 /// "temporary"
  63 LyXFont const RowPainter::getFont(pos_type pos) const
  64 {
  65         Paragraph * perverted_par = const_cast<Paragraph *>(&par_);
  66         return text_.getFont(bv_.buffer(), perverted_par, pos);
  67 }
  68
  69
  70 int RowPainter::singleWidth(lyx::pos_type pos) const
  71 {
  72         Paragraph * par(const_cast<Paragraph*>(&par_));
  73         return text_.singleWidth(par, pos);
  74 }
  75
  76
  77 int RowPainter::singleWidth(lyx::pos_type pos, char c) const
  78 {
  79         Paragraph * par(const_cast<Paragraph*>(&par_));
  80         return text_.singleWidth(par, pos, c);
  81 }
  82
  83
  84 LyXFont const RowPainter::getLabelFont() const
  85 {
  86         Paragraph * par(const_cast<Paragraph*>(&par_));
  87         return text_.getLabelFont(bv_.buffer(), par);
  88 }
  89
  90
  91 char const RowPainter::transformChar(char c, lyx::pos_type pos) const
  92 {
  93         Paragraph * par(const_cast<Paragraph*>(&par_));
  94         return text_.transformChar(c, par, pos);
  95 }
  96
  97
  98 int RowPainter::leftMargin() const
  99 {
 100         Row * row(const_cast<Row *>(&row_));
 101         return text_.leftMargin(row);
 102 }
 103
 104
 105 bool RowPainter::paintInset(pos_type const pos)
 106 {
 107         Inset * inset = const_cast<Inset*>(par_.getInset(pos));
 108
 109         lyx::Assert(inset);
 110
 111         LyXFont const & font = getFont(pos);
 112
 113 #warning inset->update FIXME
 114         inset->update(perv(bv_), false);
 115
 116         inset->draw(perv(bv_), font, yo_ + row_.baseline(), x_);
 117
 118         // return true if something changed when we drew an inset
 119
 120         return (!text_.need_break_row && !text_.isInInset()
 121             && bv_.text->status() == LyXText::CHANGED_IN_DRAW);
 122 }
 123
 124
 125 void RowPainter::paintHebrewComposeChar(pos_type & vpos)
 126 {
 127         pos_type pos = text_.vis2log(vpos);
 128
 129         string str;
 130
 131         // first char
 132         char c = par_.getChar(pos);
 133         str += c;
 134         ++vpos;
 135
 136         LyXFont const & font = getFont(pos);
 137         int const width = font_metrics::width(c, font);
 138         int dx = 0;
 139
 140         for (pos_type i = pos - 1; i >= 0; --i) {
 141                 c = par_.getChar(i);
 142                 if (!Encodings::IsComposeChar_hebrew(c)) {
 143                         if (IsPrintableNonspace(c)) {
 144                                 int const width2 =
 145                                         singleWidth(i, c);
 146                                 // dalet / resh
 147                                 dx = (c == 'ø' || c == 'ã')
 148                                         ? width2 - width
 149                                         : (width2 - width) / 2;
 150                         }
 151                         break;
 152                 }
 153         }
 154
 155         // Draw nikud
 156         pain_.text(int(x_) + dx, yo_ + row_.baseline(), str, font);
 157 }
 158
 159
 160 void RowPainter::paintArabicComposeChar(pos_type & vpos)
 161 {
 162         pos_type pos = text_.vis2log(vpos);
 163         string str;
 164
 165         // first char
 166         char c = par_.getChar(pos);
 167         c = transformChar(c, pos);
 168         str +=c;
 169         ++vpos;
 170
 171         LyXFont const & font = getFont(pos);
 172         int const width = font_metrics::width(c, font);
 173         int dx = 0;
 174
 175         for (pos_type i = pos-1; i >= 0; --i) {
 176                 c = par_.getChar(i);
 177                 if (!Encodings::IsComposeChar_arabic(c)) {
 178                         if (IsPrintableNonspace(c)) {
 179                                 int const width2 =
 180                                         singleWidth(i, c);
 181                                 dx = (width2 - width) / 2;
 182                         }
 183                         break;
 184                 }
 185         }
 186         // Draw nikud
 187         pain_.text(int(x_) + dx, yo_ + row_.baseline(), str, font);
 188 }
 189
 190
 191 void RowPainter::paintChars(pos_type & vpos, bool hebrew, bool arabic)
 192 {
 193         pos_type pos = text_.vis2log(vpos);
 194         pos_type const last = row_.lastPrintablePos();
 195         LyXFont orig_font(getFont(pos));
 196
 197         // first character
 198         string str;
 199         str += par_.getChar(pos);
 200         if (arabic) {
 201                 unsigned char c = str[0];
 202                 str[0] = transformChar(c, pos);
 203         }
 204
 205         bool prev_struckout(isDeletedText(par_, pos));
 206         bool prev_newtext(isInsertedText(par_, pos));
 207
 208         ++vpos;
 209
 210         // collect as much similar chars as we can
 211         while (vpos <= last && (pos = text_.vis2log(vpos)) >= 0) {
 212                 char c = par_.getChar(pos);
 213
 214                 if (!IsPrintableNonspace(c))
 215                         break;
 216
 217                 if (prev_struckout != isDeletedText(par_, pos))
 218                         break;
 219
 220                 if (prev_newtext != isInsertedText(par_, pos))
 221                         break;
 222
 223                 if (arabic && Encodings::IsComposeChar_arabic(c))
 224                         break;
 225                 if (hebrew && Encodings::IsComposeChar_hebrew(c))
 226                         break;
 227
 228                 if (orig_font != getFont(pos))
 229                         break;
 230
 231                 if (arabic)
 232                         c = transformChar(c, pos);
 233                 str += c;
 234                 ++vpos;
 235         }
 236
 237         if (prev_struckout) {
 238                 orig_font.setColor(LColor::strikeout);
 239         } else if (prev_newtext) {
 240                 orig_font.setColor(LColor::newtext);
 241         }
 242
 243         // Draw text and set the new x position
 244         pain_.text(int(x_), yo_ + row_.baseline(), str, orig_font);
 245         x_ += font_metrics::width(str, orig_font);
 246 }
 247
 248
 249 void RowPainter::paintForeignMark(float const orig_x, LyXFont const & orig_font)
 250 {
 251         if (!lyxrc.mark_foreign_language)
 252                 return;
 253         if (orig_font.language() == latex_language)
 254                 return;
 255         if (orig_font.language() == bv_.buffer()->params.language)
 256                 return;
 257
 258         int const y = yo_ + row_.baseline() + 1;
 259         pain_.line(int(orig_x), y, int(x_), y, LColor::language);
 260 }
 261
 262
 263 bool RowPainter::paintFromPos(pos_type & vpos)
 264 {
 265         pos_type const pos = text_.vis2log(vpos);
 266
 267         LyXFont const & orig_font = getFont(pos);
 268
 269         float const orig_x = x_;
 270
 271         char const c = par_.getChar(pos);
 272
 273         if (IsInsetChar(c)) {
 274                 if (paintInset(pos))
 275                         return true;
 276                 ++vpos;
 277                 paintForeignMark(orig_x, orig_font);
 278                 return false;
 279         }
 280
 281         // usual characters, no insets
 282
 283         // special case languages
 284         bool const hebrew = (orig_font.language()->lang() == "hebrew");
 285         bool const arabic =
 286                 orig_font.language()->lang() == "arabic" &&
 287                 (lyxrc.font_norm_type == LyXRC::ISO_8859_6_8 ||
 288                 lyxrc.font_norm_type == LyXRC::ISO_10646_1);
 289
 290         // draw as many chars as we can
 291         if ((!hebrew && !arabic)
 292                 || (hebrew && !Encodings::IsComposeChar_hebrew(c))
 293                 || (arabic && !Encodings::IsComposeChar_arabic(c))) {
 294                 paintChars(vpos, hebrew, arabic);
 295         } else if (hebrew) {
 296                 paintHebrewComposeChar(vpos);
 297         } else if (arabic) {
 298                 paintArabicComposeChar(vpos);
 299         }
 300
 301         paintForeignMark(orig_x, orig_font);
 302
 303         return false;
 304 }
 305
 306
 307 void RowPainter::paintBackground()
 308 {
 309         int const x = xo_;
 310         int const y = yo_ < 0 ? 0 : yo_;
 311         int const h = yo_ < 0 ? row_.height() + yo_ : row_.height();
 312         pain_.fillRectangle(x, y, width_, h, text_.backgroundColor());
 313 }
 314
 315
 316 void RowPainter::paintSelection()
 317 {
 318         bool const is_rtl = par_.isRightToLeftPar(bv_.buffer()->params);
 319
 320         // the current selection
 321         int const startx = text_.selection.start.x();
 322         int const endx = text_.selection.end.x();
 323         int const starty = text_.selection.start.y();
 324         int const endy = text_.selection.end.y();
 325         Row const * startrow = text_.selection.start.row();
 326         Row const * endrow = text_.selection.end.row();
 327
 328         // Bleh.
 329         Row const * row = &row_;
 330
 331         if (text_.bidi_same_direction) {
 332                 int x;
 333                 int y = yo_;
 334                 int w;
 335                 int h = row_.height();
 336
 337                 if (startrow == row && endrow == row) {
 338                         if (startx < endx) {
 339                                 x = xo_ + startx;
 340                                 w = endx - startx;
 341                                 pain_.fillRectangle(x, y, w, h, LColor::selection);
 342                         } else {
 343                                 x = xo_ + endx;
 344                                 w = startx - endx;
 345                                 pain_.fillRectangle(x, y, w, h, LColor::selection);
 346                         }
 347                 } else if (startrow == row) {
 348                         int const x = (is_rtl) ? xo_ : (xo_ + startx);
 349                         int const w = (is_rtl) ? startx : (width_ - startx);
 350                         pain_.fillRectangle(x, y, w, h, LColor::selection);
 351                 } else if (endrow == row) {
 352                         int const x = (is_rtl) ? (xo_ + endx) : xo_;
 353                         int const w = (is_rtl) ? (width_ - endx) : endx;
 354                         pain_.fillRectangle(x, y, w, h, LColor::selection);
 355                 } else if (y_ > starty && y_ < endy) {
 356                         pain_.fillRectangle(xo_, y, width_, h, LColor::selection);
 357                 }
 358                 return;
 359         } else if (startrow != row && endrow != row) {
 360                 if (y_ > starty && y_ < endy) {
 361                         int w = width_;
 362                         int h = row_.height();
 363                         pain_.fillRectangle(xo_, yo_, w, h, LColor::selection);
 364                 }
 365                 return;
 366         }
 367
 368         if ((startrow != row && !is_rtl) || (endrow != row && is_rtl))
 369                 pain_.fillRectangle(xo_, yo_, int(x_), row_.height(), LColor::selection);
 370
 371         pos_type const body_pos = par_.beginningOfBody();
 372         pos_type const last = row_.lastPrintablePos();
 373         float tmpx = x_;
 374
 375         for (pos_type vpos = row_.pos(); vpos <= last; ++vpos)  {
 376                 pos_type pos = text_.vis2log(vpos);
 377                 float const old_tmpx = tmpx;
 378                 if (body_pos > 0 && pos == body_pos - 1) {
 379                         LyXLayout_ptr const & layout = par_.layout();
 380                         LyXFont const lfont = getLabelFont();
 381
 382                         tmpx += label_hfill_ + font_metrics::width(layout->labelsep, lfont);
 383
 384                         if (par_.isLineSeparator(body_pos - 1))
 385                                 tmpx -= singleWidth(body_pos - 1);
 386                 }
 387
 388                 if (row_.hfillExpansion(pos)) {
 389                         tmpx += singleWidth(pos);
 390                         if (pos >= body_pos)
 391                                 tmpx += hfill_;
 392                         else
 393                                 tmpx += label_hfill_;
 394                 }
 395
 396                 else if (par_.isSeparator(pos)) {
 397                         tmpx += singleWidth(pos);
 398                         if (pos >= body_pos)
 399                                 tmpx += separator_;
 400                 } else {
 401                         tmpx += singleWidth(pos);
 402                 }
 403
 404                 if ((startrow != row || text_.selection.start.pos() <= pos) &&
 405                         (endrow != row || pos < text_.selection.end.pos())) {
 406                         // Here we do not use x_ as xo_ was added to x_.
 407                         pain_.fillRectangle(int(old_tmpx), yo_,
 408                                 int(tmpx - old_tmpx + 1),
 409                                 row_.height(), LColor::selection);
 410                 }
 411         }
 412
 413         if ((startrow != row && is_rtl) || (endrow != row && !is_rtl)) {
 414                 pain_.fillRectangle(xo_ + int(tmpx),
 415                                       yo_, int(bv_.workWidth() - tmpx),
 416                                       row_.height(), LColor::selection);
 417         }
 418 }
 419
 420
 421 void RowPainter::paintChangeBar()
 422 {
 423         pos_type const start = row_.pos();
 424         pos_type const end = row_.lastPrintablePos();
 425
 426         if (!par_.isChanged(start, end))
 427                 return;
 428
 429         int const height = (row_.next()
 430                 ? row_.height() + row_.next()->top_of_text()
 431                 : row_.baseline());
 432
 433         pain_.fillRectangle(4, yo_, 5, height, LColor::changebar);
 434 }
 435
 436
 437 void RowPainter::paintAppendix()
 438 {
 439         if (!par_.params().appendix())
 440                 return;
 441
 442         // FIXME: can be just width_ ?
 443         int const ww = bv_.workWidth();
 444
 445         int y = yo_;
 446
 447         if (par_.params().startOfAppendix())
 448                 y += 2 * defaultRowHeight();
 449
 450         pain_.line(1, y, 1, yo_ + row_.height(), LColor::appendix);
 451         pain_.line(ww - 2, y, ww - 2, yo_ + row_.height(), LColor::appendix);
 452 }
 453
 454
 455 void RowPainter::paintDepthBar()
 456 {
 457         Paragraph::depth_type const depth = par_.getDepth();
 458
 459         if (depth <= 0)
 460                 return;
 461
 462         Paragraph::depth_type prev_depth = 0;
 463         if (row_.previous())
 464                 prev_depth = row_.previous()->par()->getDepth();
 465         Paragraph::depth_type next_depth = 0;
 466         if (row_.next())
 467                 next_depth = row_.next()->par()->getDepth();
 468
 469         for (Paragraph::depth_type i = 1; i <= depth; ++i) {
 470                 int x = (PAPER_MARGIN / 5) * i + xo_;
 471                 // only consider the changebar space if we're drawing outer left
 472                 if (!xo_)
 473                         x += CHANGEBAR_MARGIN;
 474                 int const h = yo_ + row_.height() - 1 - (i - next_depth - 1) * 3;
 475
 476                 pain_.line(x, yo_, x, h, LColor::depthbar);
 477
 478                 int const w = PAPER_MARGIN / 5;
 479
 480                 if (i > prev_depth) {
 481                         pain_.fillRectangle(x, yo_, w, 2, LColor::depthbar);
 482                 }
 483                 if (i > next_depth) {
 484                         pain_.fillRectangle(x, h, w, 2, LColor::depthbar);
 485                 }
 486         }
 487 }
 488
 489
 490 int getLengthMarkerHeight(BufferView const & bv, VSpace const & vsp)
 491 {
 492         if (vsp.kind() == VSpace::NONE)
 493                 return 0;
 494
 495         int const arrow_size = 4;
 496         int const space_size = int(vsp.inPixels(bv));
 497
 498         LyXFont font;
 499         font.decSize();
 500         int const min_size = max(3 * arrow_size,
 501                 font_metrics::maxAscent(font)
 502                 + font_metrics::maxDescent(font));
 503
 504         if (vsp.length().len().value() < 0.0)
 505                 return min_size;
 506         else
 507                 return max(min_size, space_size);
 508 }
 509
 510
 511 int RowPainter::paintLengthMarker(string const & prefix, VSpace const & vsp, int start)
 512 {
 513         if (vsp.kind() == VSpace::NONE)
 514                 return 0;
 515
 516         int const arrow_size = 4;
 517         int const size = getLengthMarkerHeight(bv_, vsp);
 518         int const end = start + size;
 519
 520         // the label to display (if any)
 521         string str;
 522         // y-values for top arrow
 523         int ty1, ty2;
 524         // y-values for bottom arrow
 525         int by1, by2;
 526
 527         str = prefix + " (" + vsp.asLyXCommand() + ")";
 528
 529         if (vsp.kind() == VSpace::VFILL) {
 530                 ty1 = ty2 = start;
 531                 by1 = by2 = end;
 532         } else {
 533                 // adding or removing space
 534                 bool const added = vsp.kind() != VSpace::LENGTH ||
 535                                    vsp.length().len().value() > 0.0;
 536                 ty1 = added ? (start + arrow_size) : start;
 537                 ty2 = added ? start : (start + arrow_size);
 538                 by1 = added ? (end - arrow_size) : end;
 539                 by2 = added ? end : (end - arrow_size);
 540         }
 541
 542         int const leftx = xo_ + leftMargin();
 543         int const midx = leftx + arrow_size;
 544         int const rightx = midx + arrow_size;
 545
 546         // first the string
 547         int w = 0;
 548         int a = 0;
 549         int d = 0;
 550
 551         LyXFont font;
 552         font.setColor(LColor::added_space).decSize().decSize();
 553         font_metrics::rectText(str, font, w, a, d);
 554
 555         pain_.rectText(leftx + 2 * arrow_size + 5,
 556                          start + ((end - start) / 2) + d,
 557                          str, font);
 558
 559         // top arrow
 560         pain_.line(leftx, ty1, midx, ty2, LColor::added_space);
 561         pain_.line(midx, ty2, rightx, ty1, LColor::added_space);
 562
 563         // bottom arrow
 564         pain_.line(leftx, by1, midx, by2, LColor::added_space);
 565         pain_.line(midx, by2, rightx, by1, LColor::added_space);
 566
 567         // joining line
 568         pain_.line(midx, ty2, midx, by2, LColor::added_space);
 569
 570         return size;
 571 }
 572
 573
 574 int RowPainter::paintPageBreak(string const & label, int y)
 575 {
 576         LyXFont pb_font;
 577         pb_font.setColor(LColor::pagebreak).decSize();
 578
 579         int w = 0;
 580         int a = 0;
 581         int d = 0;
 582         font_metrics::rectText(label, pb_font, w, a, d);
 583
 584         int const text_start = xo_ + ((width_ - w) / 2);
 585         int const text_end = text_start + w;
 586
 587         pain_.rectText(text_start, y + d, label, pb_font);
 588
 589         pain_.line(xo_, y, text_start, y,
 590                 LColor::pagebreak, Painter::line_onoffdash);
 591         pain_.line(text_end, y, xo_ + width_, y,
 592                 LColor::pagebreak, Painter::line_onoffdash);
 593
 594         return 3 * defaultRowHeight();
 595 }
 596
 597
 598 int RowPainter::paintAppendixStart(int y)
 599 {
 600         LyXFont pb_font;
 601         pb_font.setColor(LColor::appendix).decSize();
 602
 603         string const label = _("Appendix");
 604         int w = 0;
 605         int a = 0;
 606         int d = 0;
 607         font_metrics::rectText(label, pb_font, w, a, d);
 608
 609         int const text_start = xo_ + ((width_ - w) / 2);
 610         int const text_end = text_start + w;
 611
 612         pain_.rectText(text_start, y + d, label, pb_font);
 613
 614         pain_.line(xo_ + 1, y, text_start, y, LColor::appendix);
 615         pain_.line(text_end, y, xo_ + width_ - 2, y, LColor::appendix);
 616
 617         return 3 * defaultRowHeight();
 618 }
 619
 620
 621 void RowPainter::paintFirst()
 622 {
 623         ParagraphParameters const & parparams = par_.params();
 624
 625         int y_top = 0;
 626
 627         // start of appendix?
 628         if (parparams.startOfAppendix()) {
 629                 y_top += paintAppendixStart(yo_ + y_top + 2 * defaultRowHeight());
 630         }
 631
 632         // the top margin
 633         if (!row_.previous() && !text_.isInInset())
 634                 y_top += PAPER_MARGIN;
 635
 636         // draw a top pagebreak
 637         if (parparams.pagebreakTop()) {
 638                 y_top += paintPageBreak(_("Page Break (top)"),
 639                         yo_ + y_top + 2 * defaultRowHeight());
 640         }
 641
 642         // draw the additional space if needed:
 643         y_top += paintLengthMarker(_("Space above"), parparams.spaceTop(),
 644                         yo_ + y_top);
 645
 646         Buffer const * buffer = bv_.buffer();
 647
 648         LyXLayout_ptr const & layout = par_.layout();
 649
 650         if (buffer->params.paragraph_separation == BufferParams::PARSEP_SKIP) {
 651                 if (par_.previous()) {
 652                         if (layout->latextype == LATEX_PARAGRAPH
 653                                 && !par_.getDepth()) {
 654                                 y_top += buffer->params.getDefSkip().inPixels(bv_);
 655                         } else {
 656                                 LyXLayout_ptr const & playout =
 657                                         par_.previous()->layout();
 658                                 if (playout->latextype == LATEX_PARAGRAPH
 659                                         && !par_.previous()->getDepth()) {
 660                                         // is it right to use defskip here, too? (AS)
 661                                         y_top += buffer->params.getDefSkip().inPixels(bv_);
 662                                 }
 663                         }
 664                 }
 665         }
 666
 667         int const ww = bv_.workWidth();
 668
 669         // draw a top line
 670         if (parparams.lineTop()) {
 671                 LyXFont font(LyXFont::ALL_SANE);
 672                 int const asc = font_metrics::ascent('x', getFont(0));
 673
 674                 y_top += asc;
 675
 676                 int const w = (text_.isInInset() ? text_.inset_owner->width(perv(bv_), font) : ww);
 677                 int const xp = static_cast<int>(text_.isInInset() ? xo_ : 0);
 678                 pain_.line(xp, yo_ + y_top, xp + w, yo_ + y_top,
 679                         LColor::topline, Painter::line_solid,
 680                         Painter::line_thick);
 681
 682                 y_top += asc;
 683         }
 684
 685         bool const is_rtl = par_.isRightToLeftPar(bv_.buffer()->params);
 686
 687         // should we print a label?
 688         if (layout->labeltype >= LABEL_STATIC
 689             && (layout->labeltype != LABEL_STATIC
 690                 || layout->latextype != LATEX_ENVIRONMENT
 691                 || par_.isFirstInSequence())) {
 692
 693                 LyXFont font = getLabelFont();
 694                 if (!par_.getLabelstring().empty()) {
 695                         float x = x_;
 696                         string const str = par_.getLabelstring();
 697
 698                         // this is special code for the chapter layout. This is
 699                         // printed in an extra row and has a pagebreak at
 700                         // the top.
 701                         if (layout->labeltype == LABEL_COUNTER_CHAPTER) {
 702                                 if (buffer->params.secnumdepth >= 0) {
 703                                         float spacing_val = 1.0;
 704                                         if (!parparams.spacing().isDefault()) {
 705                                                 spacing_val = parparams.spacing().getValue();
 706                                         } else {
 707                                                 spacing_val = buffer->params.spacing.getValue();
 708                                         }
 709
 710                                         int const maxdesc =
 711                                                 int(font_metrics::maxDescent(font) * layout->spacing.getValue() * spacing_val)
 712                                                 + int(layout->parsep) * defaultRowHeight();
 713
 714                                         if (is_rtl) {
 715                                                 x = ww - leftMargin() -
 716                                                         font_metrics::width(str, font);
 717                                         }
 718
 719                                         pain_.text(int(x),
 720                                                 yo_ + row_.baseline() -
 721                                                 row_.ascent_of_text() - maxdesc,
 722                                                 str, font);
 723                                 }
 724                         } else {
 725                                 if (is_rtl) {
 726                                         x = ww - leftMargin()
 727                                                 + font_metrics::width(layout->labelsep, font);
 728                                 } else {
 729                                         x = x_ - font_metrics::width(layout->labelsep, font)
 730                                                 - font_metrics::width(str, font);
 731                                 }
 732
 733                                 pain_.text(int(x), yo_ + row_.baseline(), str, font);
 734                         }
 735                 }
 736
 737         // the labels at the top of an environment.
 738         // More or less for bibliography
 739         } else if (par_.isFirstInSequence() &&
 740                 (layout->labeltype == LABEL_TOP_ENVIRONMENT ||
 741                 layout->labeltype == LABEL_BIBLIO ||
 742                 layout->labeltype == LABEL_CENTERED_TOP_ENVIRONMENT)) {
 743                 LyXFont font = getLabelFont();
 744                 if (!par_.getLabelstring().empty()) {
 745                         string const str = par_.getLabelstring();
 746                         float spacing_val = 1.0;
 747                         if (!parparams.spacing().isDefault()) {
 748                                 spacing_val = parparams.spacing().getValue();
 749                         } else {
 750                                 spacing_val = buffer->params.spacing.getValue();
 751                         }
 752
 753                         int maxdesc =
 754                                 int(font_metrics::maxDescent(font) * layout->spacing.getValue() * spacing_val
 755                                 + (layout->labelbottomsep * defaultRowHeight()));
 756
 757                         float x = x_;
 758                         if (layout->labeltype == LABEL_CENTERED_TOP_ENVIRONMENT) {
 759                                 x = ((is_rtl ? leftMargin() : x_)
 760                                          + ww - text_.rightMargin(*bv_.buffer(), row_)) / 2;
 761                                 x -= font_metrics::width(str, font) / 2;
 762                         } else if (is_rtl) {
 763                                 x = ww - leftMargin() -
 764                                         font_metrics::width(str, font);
 765                         }
 766                         pain_.text(int(x), yo_ + row_.baseline()
 767                                   - row_.ascent_of_text() - maxdesc,
 768                                   str, font);
 769                 }
 770         }
 771 }
 772
 773
 774 void RowPainter::paintLast()
 775 {
 776         ParagraphParameters const & parparams = par_.params();
 777         int y_bottom = row_.height() - 1;
 778
 779         // the bottom margin
 780         if (!row_.next() && !text_.isInInset())
 781                 y_bottom -= PAPER_MARGIN;
 782
 783         int const ww = bv_.workWidth();
 784
 785         // draw a bottom pagebreak
 786         if (parparams.pagebreakBottom()) {
 787                 y_bottom -= paintPageBreak(_("Page Break (bottom)"),
 788                         yo_ + y_bottom - 2 * defaultRowHeight());
 789         }
 790
 791         // draw the additional space if needed:
 792         int const height = getLengthMarkerHeight(bv_, parparams.spaceBottom());
 793         y_bottom -= paintLengthMarker(_("Space below"), parparams.spaceBottom(),
 794                              yo_ + y_bottom - height);
 795
 796         // draw a bottom line
 797         if (parparams.lineBottom()) {
 798                 LyXFont font(LyXFont::ALL_SANE);
 799                 int const asc = font_metrics::ascent('x',
 800                         getFont(max(pos_type(0), par_.size() - 1)));
 801
 802                 y_bottom -= asc;
 803
 804                 int const w = (text_.isInInset() ? text_.inset_owner->width(perv(bv_), font) : ww);
 805                 int const xp = static_cast<int>(text_.isInInset() ? xo_ : 0);
 806                 int const y = yo_ + y_bottom;
 807                 pain_.line(xp, y, xp + w, y, LColor::topline, Painter::line_solid,
 808                           Painter::line_thick);
 809
 810                 y_bottom -= asc;
 811         }
 812
 813         bool const is_rtl = par_.isRightToLeftPar(bv_.buffer()->params);
 814         int const endlabel = par_.getEndLabel();
 815
 816         // draw an endlabel
 817         switch (endlabel) {
 818         case END_LABEL_BOX:
 819         case END_LABEL_FILLED_BOX:
 820         {
 821                 LyXFont const font = getLabelFont();
 822                 int const size = int(0.75 * font_metrics::maxAscent(font));
 823                 int const y = (yo_ + row_.baseline()) - size;
 824                 int x = is_rtl ? LEFT_MARGIN : ww - PAPER_MARGIN - size;
 825
 826                 if (row_.fill() <= size)
 827                         x += (size - row_.fill() + 1) * (is_rtl ? -1 : 1);
 828
 829                 if (endlabel == END_LABEL_BOX) {
 830                         pain_.rectangle(x, y, size, size, LColor::eolmarker);
 831                 } else {
 832                         pain_.fillRectangle(x, y, size, size, LColor::eolmarker);
 833                 }
 834                 break;
 835         }
 836         case END_LABEL_STATIC:
 837         {
 838 #if 0
 839                 LyXFont font(LyXFont::ALL_SANE);
 840                 font = getLabelFont();
 841 #else
 842                 LyXFont font = getLabelFont();
 843 #endif
 844                 string const & str = par_.layout()->endlabelstring();
 845                 int const x = is_rtl ?
 846                         int(x_) - font_metrics::width(str, font)
 847                         : ww - text_.rightMargin(*bv_.buffer(), row_) - row_.fill();
 848                 pain_.text(x, yo_ + row_.baseline(), str, font);
 849                 break;
 850         }
 851         case END_LABEL_NO_LABEL:
 852                 break;
 853         }
 854 }
 855
 856
 857 bool RowPainter::paintText()
 858 {
 859         pos_type const last = row_.lastPrintablePos();
 860         pos_type body_pos = par_.beginningOfBody();
 861         if (body_pos > 0 &&
 862                 (body_pos - 1 > last ||
 863                 !par_.isLineSeparator(body_pos - 1))) {
 864                 body_pos = 0;
 865         }
 866
 867         LyXLayout_ptr const & layout = par_.layout();
 868
 869         bool running_strikeout = false;
 870         bool is_struckout = false;
 871         float last_strikeout_x = 0.0;
 872
 873         pos_type vpos = row_.pos();
 874         while (vpos <= last) {
 875                 if (x_ > bv_.workWidth())
 876                         break;
 877                 pos_type pos = text_.vis2log(vpos);
 878
 879                 if (pos >= par_.size()) {
 880                         ++vpos;
 881                         continue;
 882                 }
 883
 884                 if (x_ + singleWidth(pos) < 0) {
 885                         x_ += singleWidth(pos);
 886                         ++vpos;
 887                         continue;
 888                 }
 889
 890                 is_struckout = isDeletedText(par_, pos);
 891
 892                 if (is_struckout && !running_strikeout) {
 893                         running_strikeout = true;
 894                         last_strikeout_x = x_;
 895                 }
 896
 897                 bool const highly_editable_inset = par_.isInset(pos)
 898                         && isHighlyEditableInset(par_.getInset(pos));
 899
 900                 // if we reach the end of a struck out range, paint it
 901                 // we also don't paint across things like tables
 902                 if (running_strikeout && (highly_editable_inset || !is_struckout)) {
 903                         int const middle = yo_ + row_.top_of_text()
 904                                 + ((row_.baseline() - row_.top_of_text()) / 2);
 905                         pain_.line(int(last_strikeout_x), middle, int(x_), middle,
 906                                 LColor::strikeout, Painter::line_solid, Painter::line_thin);
 907                         running_strikeout = false;
 908                 }
 909
 910                 if (body_pos > 0 && pos == body_pos - 1) {
 911                         int const lwidth = font_metrics::width(layout->labelsep,
 912                                 getLabelFont());
 913
 914                         x_ += label_hfill_ + lwidth
 915                                 - singleWidth(body_pos - 1);
 916                 }
 917
 918                 if (par_.isHfill(pos)) {
 919                         x_ += 1;
 920
 921                         int const y0 = yo_ + row_.baseline();
 922                         int const y1 = y0 - defaultRowHeight() / 2;
 923
 924                         pain_.line(int(x_), y1, int(x_), y0,
 925                                      LColor::added_space);
 926
 927                         if (row_.hfillExpansion(pos)) {
 928                                 int const y2 = (y0 + y1) / 2;
 929
 930                                 if (pos >= body_pos) {
 931                                         pain_.line(int(x_), y2,
 932                                                   int(x_ + hfill_), y2,
 933                                                   LColor::added_space,
 934                                                   Painter::line_onoffdash);
 935                                         x_ += hfill_;
 936                                 } else {
 937                                         pain_.line(int(x_), y2,
 938                                                   int(x_ + label_hfill_), y2,
 939                                                   LColor::added_space,
 940                                                   Painter::line_onoffdash);
 941                                         x_ += label_hfill_;
 942                                 }
 943                                 pain_.line(int(x_), y1,
 944                                              int(x_), y0,
 945                                              LColor::added_space);
 946                         }
 947                         x_ += 2;
 948                         ++vpos;
 949                 } else if (par_.isSeparator(pos)) {
 950                         x_ += singleWidth(pos);
 951                         if (pos >= body_pos)
 952                                 x_ += separator_;
 953                         ++vpos;
 954                 } else {
 955                         if (paintFromPos(vpos))
 956                                 return true;
 957                 }
 958         }
 959
 960         // if we reach the end of a struck out range, paint it
 961         if (running_strikeout) {
 962                 int const middle = yo_ + row_.top_of_text()
 963                         + ((row_.baseline() - row_.top_of_text()) / 2);
 964                 pain_.line(int(last_strikeout_x), middle, int(x_), middle,
 965                         LColor::strikeout, Painter::line_solid, Painter::line_thin);
 966                 running_strikeout = false;
 967         }
 968         return false;
 969 }
 970
 971
 972 bool RowPainter::paint(int y_offset, int x_offset, int y)
 973 {
 974         xo_ = x_offset;
 975         yo_ = y_offset;
 976         y_ = y;
 977         width_ = text_.isInInset()
 978                 ? text_.inset_owner->textWidth(perv(bv_), true) : bv_.workWidth();
 979
 980         // FIXME: must be a cleaner way here. Aren't these calculations
 981         // belonging to row metrics ?
 982         Row * row(const_cast<Row *>(&row_));
 983         text_.prepareToPrint(row, x_, separator_, hfill_, label_hfill_);
 984
 985         // FIXME: what is this fixing ?
 986         if (text_.isInInset() && (x_ < 0))
 987                 x_ = 0;
 988         x_ += xo_;
 989
 990         // If we're *not* at the top-level of rows, then the
 991         // background has already been cleared.
 992         if (&text_ == bv_.text)
 993                 paintBackground();
 994
 995         // paint the selection background
 996         if (text_.selection.set()) {
 997                 paintSelection();
 998         }
 999
1000         // vertical lines for appendix
1001         paintAppendix();
1002
1003         // environment depth brackets
1004         paintDepthBar();
1005
1006         // changebar
1007         paintChangeBar();
1008
1009         if (row_.isParStart()) {
1010                 paintFirst();
1011         }
1012
1013         if (row_.isParEnd()) {
1014                 paintLast();
1015         }
1016
1017         // paint text
1018         return paintText();
1019 }