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_.getRow(text_.selection.start);
 318         RowList::iterator endrow = text_.getRow(text_.selection.end);
 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
 456         RowList::iterator next_row = boost::next(row_);
 457         if (next_row != text_.rows().end())
 458                 next_depth = next_row->par()->getDepth();
 459
 460         for (Paragraph::depth_type i = 1; i <= depth; ++i) {
 461                 int x = (PAPER_MARGIN / 5) * i + xo_;
 462                 // only consider the changebar space if we're drawing outer left
 463                 if (!xo_)
 464                         x += CHANGEBAR_MARGIN;
 465                 int const h = yo_ + row_->height() - 1 - (i - next_depth - 1) * 3;
 466
 467                 pain_.line(x, yo_, x, h, LColor::depthbar);
 468
 469                 int const w = PAPER_MARGIN / 5;
 470
 471                 if (i > prev_depth) {
 472                         pain_.fillRectangle(x, yo_, w, 2, LColor::depthbar);
 473                 }
 474                 if (i > next_depth) {
 475                         pain_.fillRectangle(x, h, w, 2, LColor::depthbar);
 476                 }
 477         }
 478 }
 479
 480
 481 int getLengthMarkerHeight(BufferView const & bv, VSpace const & vsp)
 482 {
 483         if (vsp.kind() == VSpace::NONE)
 484                 return 0;
 485
 486         int const arrow_size = 4;
 487         int const space_size = int(vsp.inPixels(bv));
 488
 489         LyXFont font;
 490         font.decSize();
 491         int const min_size = max(3 * arrow_size,
 492                 font_metrics::maxAscent(font)
 493                 + font_metrics::maxDescent(font));
 494
 495         if (vsp.length().len().value() < 0.0)
 496                 return min_size;
 497         else
 498                 return max(min_size, space_size);
 499 }
 500
 501
 502 int RowPainter::paintLengthMarker(string const & prefix, VSpace const & vsp, int start)
 503 {
 504         if (vsp.kind() == VSpace::NONE)
 505                 return 0;
 506
 507         int const arrow_size = 4;
 508         int const size = getLengthMarkerHeight(bv_, vsp);
 509         int const end = start + size;
 510
 511         // the label to display (if any)
 512         string str;
 513         // y-values for top arrow
 514         int ty1, ty2;
 515         // y-values for bottom arrow
 516         int by1, by2;
 517
 518         str = prefix + " (" + vsp.asLyXCommand() + ")";
 519
 520         if (vsp.kind() == VSpace::VFILL) {
 521                 ty1 = ty2 = start;
 522                 by1 = by2 = end;
 523         } else {
 524                 // adding or removing space
 525                 bool const added = vsp.kind() != VSpace::LENGTH ||
 526                                    vsp.length().len().value() > 0.0;
 527                 ty1 = added ? (start + arrow_size) : start;
 528                 ty2 = added ? start : (start + arrow_size);
 529                 by1 = added ? (end - arrow_size) : end;
 530                 by2 = added ? end : (end - arrow_size);
 531         }
 532
 533         int const leftx = xo_ + leftMargin();
 534         int const midx = leftx + arrow_size;
 535         int const rightx = midx + arrow_size;
 536
 537         // first the string
 538         int w = 0;
 539         int a = 0;
 540         int d = 0;
 541
 542         LyXFont font;
 543         font.setColor(LColor::added_space).decSize().decSize();
 544         font_metrics::rectText(str, font, w, a, d);
 545
 546         pain_.rectText(leftx + 2 * arrow_size + 5,
 547                          start + ((end - start) / 2) + d,
 548                          str, font);
 549
 550         // top arrow
 551         pain_.line(leftx, ty1, midx, ty2, LColor::added_space);
 552         pain_.line(midx, ty2, rightx, ty1, LColor::added_space);
 553
 554         // bottom arrow
 555         pain_.line(leftx, by1, midx, by2, LColor::added_space);
 556         pain_.line(midx, by2, rightx, by1, LColor::added_space);
 557
 558         // joining line
 559         pain_.line(midx, ty2, midx, by2, LColor::added_space);
 560
 561         return size;
 562 }
 563
 564
 565 int RowPainter::paintPageBreak(string const & label, int y)
 566 {
 567         LyXFont pb_font;
 568         pb_font.setColor(LColor::pagebreak).decSize();
 569
 570         int w = 0;
 571         int a = 0;
 572         int d = 0;
 573         font_metrics::rectText(label, pb_font, w, a, d);
 574
 575         int const text_start = xo_ + ((width_ - w) / 2);
 576         int const text_end = text_start + w;
 577
 578         pain_.rectText(text_start, y + d, label, pb_font);
 579
 580         pain_.line(xo_, y, text_start, y,
 581                 LColor::pagebreak, Painter::line_onoffdash);
 582         pain_.line(text_end, y, xo_ + width_, y,
 583                 LColor::pagebreak, Painter::line_onoffdash);
 584
 585         return 3 * defaultRowHeight();
 586 }
 587
 588
 589 int RowPainter::paintAppendixStart(int y)
 590 {
 591         LyXFont pb_font;
 592         pb_font.setColor(LColor::appendix).decSize();
 593
 594         string const label = _("Appendix");
 595         int w = 0;
 596         int a = 0;
 597         int d = 0;
 598         font_metrics::rectText(label, pb_font, w, a, d);
 599
 600         int const text_start = xo_ + ((width_ - w) / 2);
 601         int const text_end = text_start + w;
 602
 603         pain_.rectText(text_start, y + d, label, pb_font);
 604
 605         pain_.line(xo_ + 1, y, text_start, y, LColor::appendix);
 606         pain_.line(text_end, y, xo_ + width_ - 2, y, LColor::appendix);
 607
 608         return 3 * defaultRowHeight();
 609 }
 610
 611
 612 void RowPainter::paintFirst()
 613 {
 614         ParagraphParameters const & parparams = pit_->params();
 615
 616         int y_top = 0;
 617
 618         // start of appendix?
 619         if (parparams.startOfAppendix()) {
 620                 y_top += paintAppendixStart(yo_ + y_top + 2 * defaultRowHeight());
 621         }
 622
 623         // the top margin
 624         if (row_ == text_.rows().begin() && !text_.isInInset())
 625                 y_top += PAPER_MARGIN;
 626
 627         // draw a top pagebreak
 628         if (parparams.pagebreakTop()) {
 629                 y_top += paintPageBreak(_("Page Break (top)"),
 630                         yo_ + y_top + 2 * defaultRowHeight());
 631         }
 632
 633         // draw the additional space if needed:
 634         y_top += paintLengthMarker(_("Space above"), parparams.spaceTop(),
 635                         yo_ + y_top);
 636
 637         Buffer const * buffer = bv_.buffer();
 638
 639         LyXLayout_ptr const & layout = pit_->layout();
 640
 641         if (buffer->params.paragraph_separation == BufferParams::PARSEP_SKIP) {
 642                 if (pit_ != text_.ownerParagraphs().begin()) {
 643                         if (layout->latextype == LATEX_PARAGRAPH
 644                                 && !pit_->getDepth()) {
 645                                 y_top += buffer->params.getDefSkip().inPixels(bv_);
 646                         } else {
 647                                 LyXLayout_ptr const & playout =
 648                                         boost::prior(pit_)->layout();
 649                                 if (playout->latextype == LATEX_PARAGRAPH
 650                                         && !boost::prior(pit_)->getDepth()) {
 651                                         // is it right to use defskip here, too? (AS)
 652                                         y_top += buffer->params.getDefSkip().inPixels(bv_);
 653                                 }
 654                         }
 655                 }
 656         }
 657
 658         int const ww = bv_.workWidth();
 659
 660         // draw a top line
 661         if (parparams.lineTop()) {
 662                 LyXFont font(LyXFont::ALL_SANE);
 663                 int const asc = font_metrics::ascent('x', getFont(0));
 664
 665                 y_top += asc;
 666
 667                 int const w = (text_.isInInset() ? text_.inset_owner->width(perv(bv_), font) : ww);
 668                 int const xp = static_cast<int>(text_.isInInset() ? xo_ : 0);
 669                 pain_.line(xp, yo_ + y_top, xp + w, yo_ + y_top,
 670                         LColor::topline, Painter::line_solid,
 671                         Painter::line_thick);
 672
 673                 y_top += asc;
 674         }
 675
 676         bool const is_rtl = pit_->isRightToLeftPar(bv_.buffer()->params);
 677
 678         // should we print a label?
 679         if (layout->labeltype >= LABEL_STATIC
 680             && (layout->labeltype != LABEL_STATIC
 681                 || layout->latextype != LATEX_ENVIRONMENT
 682                 || isFirstInSequence(pit_, text_.ownerParagraphs()))) {
 683
 684                 LyXFont font = getLabelFont();
 685                 if (!pit_->getLabelstring().empty()) {
 686                         float x = x_;
 687                         string const str = pit_->getLabelstring();
 688
 689                         // this is special code for the chapter layout. This is
 690                         // printed in an extra row and has a pagebreak at
 691                         // the top.
 692                         if (layout->labeltype == LABEL_COUNTER_CHAPTER) {
 693                                 if (buffer->params.secnumdepth >= 0) {
 694                                         float spacing_val = 1.0;
 695                                         if (!parparams.spacing().isDefault()) {
 696                                                 spacing_val = parparams.spacing().getValue();
 697                                         } else {
 698                                                 spacing_val = buffer->params.spacing.getValue();
 699                                         }
 700
 701                                         int const maxdesc =
 702                                                 int(font_metrics::maxDescent(font) * layout->spacing.getValue() * spacing_val)
 703                                                 + int(layout->parsep) * defaultRowHeight();
 704
 705                                         if (is_rtl) {
 706                                                 x = ww - leftMargin() -
 707                                                         font_metrics::width(str, font);
 708                                         }
 709
 710                                         pain_.text(int(x),
 711                                                 yo_ + row_->baseline() -
 712                                                 row_->ascent_of_text() - maxdesc,
 713                                                 str, font);
 714                                 }
 715                         } else {
 716                                 if (is_rtl) {
 717                                         x = ww - leftMargin()
 718                                                 + font_metrics::width(layout->labelsep, font);
 719                                 } else {
 720                                         x = x_ - font_metrics::width(layout->labelsep, font)
 721                                                 - font_metrics::width(str, font);
 722                                 }
 723
 724                                 pain_.text(int(x), yo_ + row_->baseline(), str, font);
 725                         }
 726                 }
 727
 728         // the labels at the top of an environment.
 729         // More or less for bibliography
 730         } else if (isFirstInSequence(pit_, text_.ownerParagraphs()) &&
 731                 (layout->labeltype == LABEL_TOP_ENVIRONMENT ||
 732                 layout->labeltype == LABEL_BIBLIO ||
 733                 layout->labeltype == LABEL_CENTERED_TOP_ENVIRONMENT)) {
 734                 LyXFont font = getLabelFont();
 735                 if (!pit_->getLabelstring().empty()) {
 736                         string const str = pit_->getLabelstring();
 737                         float spacing_val = 1.0;
 738                         if (!parparams.spacing().isDefault()) {
 739                                 spacing_val = parparams.spacing().getValue();
 740                         } else {
 741                                 spacing_val = buffer->params.spacing.getValue();
 742                         }
 743
 744                         int maxdesc =
 745                                 int(font_metrics::maxDescent(font) * layout->spacing.getValue() * spacing_val
 746                                 + (layout->labelbottomsep * defaultRowHeight()));
 747
 748                         float x = x_;
 749                         if (layout->labeltype == LABEL_CENTERED_TOP_ENVIRONMENT) {
 750                                 x = ((is_rtl ? leftMargin() : x_)
 751                                          + ww - text_.rightMargin(*bv_.buffer(), *row_)) / 2;
 752                                 x -= font_metrics::width(str, font) / 2;
 753                         } else if (is_rtl) {
 754                                 x = ww - leftMargin() -
 755                                         font_metrics::width(str, font);
 756                         }
 757                         pain_.text(int(x), yo_ + row_->baseline()
 758                                   - row_->ascent_of_text() - maxdesc,
 759                                   str, font);
 760                 }
 761         }
 762 }
 763
 764
 765 void RowPainter::paintLast()
 766 {
 767         ParagraphParameters const & parparams = pit_->params();
 768         int y_bottom = row_->height() - 1;
 769
 770         // the bottom margin
 771         if (boost::next(row_) == text_.rows().end() && !text_.isInInset())
 772                 y_bottom -= PAPER_MARGIN;
 773
 774         int const ww = bv_.workWidth();
 775
 776         // draw a bottom pagebreak
 777         if (parparams.pagebreakBottom()) {
 778                 y_bottom -= paintPageBreak(_("Page Break (bottom)"),
 779                         yo_ + y_bottom - 2 * defaultRowHeight());
 780         }
 781
 782         // draw the additional space if needed:
 783         int const height = getLengthMarkerHeight(bv_, parparams.spaceBottom());
 784         y_bottom -= paintLengthMarker(_("Space below"), parparams.spaceBottom(),
 785                              yo_ + y_bottom - height);
 786
 787         // draw a bottom line
 788         if (parparams.lineBottom()) {
 789                 LyXFont font(LyXFont::ALL_SANE);
 790                 int const asc = font_metrics::ascent('x',
 791                         getFont(max(pos_type(0), pit_->size() - 1)));
 792
 793                 y_bottom -= asc;
 794
 795                 int const w = (text_.isInInset() ? text_.inset_owner->width(perv(bv_), font) : ww);
 796                 int const xp = static_cast<int>(text_.isInInset() ? xo_ : 0);
 797                 int const y = yo_ + y_bottom;
 798                 pain_.line(xp, y, xp + w, y, LColor::topline, Painter::line_solid,
 799                           Painter::line_thick);
 800
 801                 y_bottom -= asc;
 802         }
 803
 804         bool const is_rtl = pit_->isRightToLeftPar(bv_.buffer()->params);
 805         int const endlabel = getEndLabel(pit_, text_.ownerParagraphs());
 806
 807         // draw an endlabel
 808         switch (endlabel) {
 809         case END_LABEL_BOX:
 810         case END_LABEL_FILLED_BOX:
 811         {
 812                 LyXFont const font = getLabelFont();
 813                 int const size = int(0.75 * font_metrics::maxAscent(font));
 814                 int const y = (yo_ + row_->baseline()) - size;
 815                 int x = is_rtl ? LEFT_MARGIN : ww - PAPER_MARGIN - size;
 816
 817                 if (row_->fill() <= size)
 818                         x += (size - row_->fill() + 1) * (is_rtl ? -1 : 1);
 819
 820                 if (endlabel == END_LABEL_BOX) {
 821                         pain_.rectangle(x, y, size, size, LColor::eolmarker);
 822                 } else {
 823                         pain_.fillRectangle(x, y, size, size, LColor::eolmarker);
 824                 }
 825                 break;
 826         }
 827         case END_LABEL_STATIC:
 828         {
 829 #if 0
 830                 LyXFont font(LyXFont::ALL_SANE);
 831                 font = getLabelFont();
 832 #else
 833                 LyXFont font = getLabelFont();
 834 #endif
 835                 string const & str = pit_->layout()->endlabelstring();
 836                 int const x = is_rtl ?
 837                         int(x_) - font_metrics::width(str, font)
 838                         : ww - text_.rightMargin(*bv_.buffer(), *row_) - row_->fill();
 839                 pain_.text(x, yo_ + row_->baseline(), str, font);
 840                 break;
 841         }
 842         case END_LABEL_NO_LABEL:
 843                 break;
 844         }
 845 }
 846
 847
 848 void RowPainter::paintText()
 849 {
 850         pos_type const last = lastPrintablePos(text_, row_);
 851         pos_type body_pos = pit_->beginningOfBody();
 852         if (body_pos > 0 &&
 853                 (body_pos - 1 > last ||
 854                 !pit_->isLineSeparator(body_pos - 1))) {
 855                 body_pos = 0;
 856         }
 857
 858         LyXLayout_ptr const & layout = pit_->layout();
 859
 860         bool running_strikeout = false;
 861         bool is_struckout = false;
 862         float last_strikeout_x = 0.0;
 863
 864         pos_type vpos = row_->pos();
 865         while (vpos <= last) {
 866                 if (x_ > bv_.workWidth())
 867                         break;
 868                 pos_type pos = text_.vis2log(vpos);
 869
 870                 if (pos >= pit_->size()) {
 871                         ++vpos;
 872                         continue;
 873                 }
 874
 875                 if (x_ + singleWidth(pos) < 0) {
 876                         x_ += singleWidth(pos);
 877                         ++vpos;
 878                         continue;
 879                 }
 880
 881                 is_struckout = isDeletedText(*pit_, pos);
 882
 883                 if (is_struckout && !running_strikeout) {
 884                         running_strikeout = true;
 885                         last_strikeout_x = x_;
 886                 }
 887
 888                 bool const highly_editable_inset = pit_->isInset(pos)
 889                         && isHighlyEditableInset(pit_->getInset(pos));
 890
 891                 // if we reach the end of a struck out range, paint it
 892                 // we also don't paint across things like tables
 893                 if (running_strikeout && (highly_editable_inset || !is_struckout)) {
 894                         int const middle = yo_ + row_->top_of_text()
 895                                 + ((row_->baseline() - row_->top_of_text()) / 2);
 896                         pain_.line(int(last_strikeout_x), middle, int(x_), middle,
 897                                 LColor::strikeout, Painter::line_solid, Painter::line_thin);
 898                         running_strikeout = false;
 899                 }
 900
 901                 if (body_pos > 0 && pos == body_pos - 1) {
 902                         int const lwidth = font_metrics::width(layout->labelsep,
 903                                 getLabelFont());
 904
 905                         x_ += label_hfill_ + lwidth
 906                                 - singleWidth(body_pos - 1);
 907                 }
 908
 909                 if (pit_->isHfill(pos)) {
 910                         x_ += 1;
 911
 912                         int const y0 = yo_ + row_->baseline();
 913                         int const y1 = y0 - defaultRowHeight() / 2;
 914
 915                         pain_.line(int(x_), y1, int(x_), y0,
 916                                      LColor::added_space);
 917
 918                         if (hfillExpansion(text_, row_, pos)) {
 919                                 int const y2 = (y0 + y1) / 2;
 920
 921                                 if (pos >= body_pos) {
 922                                         pain_.line(int(x_), y2,
 923                                                   int(x_ + hfill_), y2,
 924                                                   LColor::added_space,
 925                                                   Painter::line_onoffdash);
 926                                         x_ += hfill_;
 927                                 } else {
 928                                         pain_.line(int(x_), y2,
 929                                                   int(x_ + label_hfill_), y2,
 930                                                   LColor::added_space,
 931                                                   Painter::line_onoffdash);
 932                                         x_ += label_hfill_;
 933                                 }
 934                                 pain_.line(int(x_), y1,
 935                                              int(x_), y0,
 936                                              LColor::added_space);
 937                         }
 938                         x_ += 2;
 939                         ++vpos;
 940                 } else if (pit_->isSeparator(pos)) {
 941                         x_ += singleWidth(pos);
 942                         if (pos >= body_pos)
 943                                 x_ += separator_;
 944                         ++vpos;
 945                 } else {
 946                         paintFromPos(vpos);
 947                 }
 948         }
 949
 950         // if we reach the end of a struck out range, paint it
 951         if (running_strikeout) {
 952                 int const middle = yo_ + row_->top_of_text()
 953                         + ((row_->baseline() - row_->top_of_text()) / 2);
 954                 pain_.line(int(last_strikeout_x), middle, int(x_), middle,
 955                         LColor::strikeout, Painter::line_solid, Painter::line_thin);
 956                 running_strikeout = false;
 957         }
 958         return;
 959 }
 960
 961
 962 void RowPainter::paint(int y_offset, int x_offset, int y)
 963 {
 964         xo_ = x_offset;
 965         yo_ = y_offset;
 966         y_ = y;
 967         width_ = text_.isInInset()
 968                 ? text_.inset_owner->textWidth(perv(bv_), true) : bv_.workWidth();
 969
 970         // FIXME: must be a cleaner way here. Aren't these calculations
 971         // belonging to row metrics ?
 972         text_.prepareToPrint(row_, x_, separator_, hfill_, label_hfill_);
 973
 974         // FIXME: what is this fixing ?
 975         if (text_.isInInset() && (x_ < 0))
 976                 x_ = 0;
 977         x_ += xo_;
 978
 979         // If we're *not* at the top-level of rows, then the
 980         // background has already been cleared.
 981         if (&text_ == bv_.text)
 982                 paintBackground();
 983
 984         // paint the selection background
 985         if (text_.selection.set()) {
 986                 paintSelection();
 987         }
 988
 989         // vertical lines for appendix
 990         paintAppendix();
 991
 992         // environment depth brackets
 993         paintDepthBar();
 994
 995         // changebar
 996         paintChangeBar();
 997
 998         if (row_->isParStart()) {
 999                 paintFirst();
1000         }
1001
1002         if (isParEnd(text_, row_)) {
1003                 paintLast();
1004         }
1005
1006         // paint text
1007         paintText();
1008 }