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