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