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 "rowpainter.h"
  15
  16 #include "buffer.h"
  17 #include "cursor.h"
  18 #include "debug.h"
  19 #include "bufferparams.h"
  20 #include "BufferView.h"
  21 #include "encoding.h"
  22 #include "gettext.h"
  23 #include "language.h"
  24 #include "LColor.h"
  25 #include "lyxrc.h"
  26 #include "lyxrow.h"
  27 #include "lyxrow_funcs.h"
  28 #include "metricsinfo.h"
  29 #include "paragraph.h"
  30 #include "paragraph_funcs.h"
  31 #include "ParagraphParameters.h"
  32 #include "vspace.h"
  33
  34 #include "frontends/font_metrics.h"
  35 #include "frontends/nullpainter.h"
  36 #include "frontends/Painter.h"
  37
  38 #include "insets/insettext.h"
  39
  40 #include "support/textutils.h"
  41
  42 using lyx::pos_type;
  43 using lyx::par_type;
  44
  45 using std::endl;
  46 using std::max;
  47 using std::string;
  48
  49 extern int NEST_MARGIN;
  50 extern int CHANGEBAR_MARGIN;
  51
  52
  53 namespace {
  54
  55 /**
  56  * A class used for painting an individual row of text.
  57  */
  58 class RowPainter {
  59 public:
  60         /// initialise and run painter
  61         RowPainter(BufferView const & bv, Painter & pain, LyXText const & text,
  62                 par_type pit, RowList::iterator rit, int y);
  63 private:
  64         // paint various parts
  65         void paintBackground();
  66         void paintSelection();
  67         void paintAppendix();
  68         void paintDepthBar();
  69         void paintChangeBar();
  70         void paintFirst();
  71         void paintLast();
  72         void paintForeignMark(double orig_x, LyXFont const & orig_font);
  73         void paintHebrewComposeChar(lyx::pos_type & vpos);
  74         void paintArabicComposeChar(lyx::pos_type & vpos);
  75         void paintChars(lyx::pos_type & vpos, bool hebrew, bool arabic);
  76         int paintAppendixStart(int y);
  77         void paintText();
  78         void paintFromPos(lyx::pos_type & vpos);
  79         void paintInset(lyx::pos_type const pos);
  80
  81         /// return left margin
  82         int leftMargin() const;
  83
  84         /// return the font at the given pos
  85         LyXFont const getFont(lyx::pos_type pos) const;
  86
  87         /// return the label font for this row
  88         LyXFont const getLabelFont() const;
  89
  90         /// return pixel width for the given pos
  91         int singleWidth(lyx::pos_type pos) const;
  92         int singleWidth(lyx::pos_type pos, char c) const;
  93
  94         /// bufferview to paint on
  95         BufferView const & bv_;
  96
  97         /// Painter to use
  98         Painter & pain_;
  99
 100         /// LyXText for the row
 101         LyXText const & text_;
 102         ParagraphList & pars_;
 103
 104         /// The row to paint
 105         RowList::iterator const rit_;
 106         Row & row_;
 107
 108         /// Row's paragraph
 109         mutable par_type pit_;
 110
 111         // Looks ugly - is
 112         double xo_;
 113         int yo_;
 114         double x_;
 115         int width_;
 116         double separator_;
 117         double hfill_;
 118         double label_hfill_;
 119 };
 120
 121
 122 RowPainter::RowPainter(BufferView const & bv, Painter & pain,
 123         LyXText const & text, par_type pit, RowList::iterator rit, int y)
 124         : bv_(bv), pain_(pain), text_(text), pars_(text.paragraphs()),
 125           rit_(rit), row_(*rit), pit_(pit),
 126           xo_(text_.xo_), yo_(y), width_(text_.width())
 127 {
 128         //lyxerr << "RowPainter: x: " << x_ << " xo: " << xo << " yo: " << yo
 129         //      << " pit->y: " << pit_->y
 130         //      << " row: " << (pars_[pit_].size() ? pars_[pit_].getChar(row_.pos()) : 'X') << endl;
 131         RowMetrics m = text_.computeRowMetrics(pit, row_);
 132         x_ = m.x + xo_;
 133         separator_ = m.separator;
 134         hfill_ = m.hfill;
 135         label_hfill_ = m.label_hfill;
 136
 137         // background has already been cleared.
 138         if (&text_ == bv_.text())
 139                 paintBackground();
 140
 141         // paint the selection background
 142         if (bv_.cursor().selection() && &text_ == bv_.cursor().text())
 143                 paintSelection();
 144
 145         // vertical lines for appendix
 146         paintAppendix();
 147
 148         // environment depth brackets
 149         paintDepthBar();
 150
 151         // changebar
 152         paintChangeBar();
 153
 154         if (row_.pos() == 0)
 155                 paintFirst();
 156
 157         if (row_.endpos() >= pars_[pit_].size())
 158                 paintLast();
 159
 160         // paint text
 161         paintText();
 162 }
 163
 164
 165 /// "temporary"
 166 LyXFont const RowPainter::getFont(pos_type pos) const
 167 {
 168         return text_.getFont(pit_, pos);
 169 }
 170
 171
 172 int RowPainter::singleWidth(lyx::pos_type pos) const
 173 {
 174         return text_.singleWidth(pit_, pos);
 175 }
 176
 177
 178 int RowPainter::singleWidth(lyx::pos_type pos, char c) const
 179 {
 180         LyXFont const & font = text_.getFont(pit_, pos);
 181         return text_.singleWidth(pit_, pos, c, font);
 182 }
 183
 184
 185 LyXFont const RowPainter::getLabelFont() const
 186 {
 187         return text_.getLabelFont(pit_);
 188 }
 189
 190
 191 int RowPainter::leftMargin() const
 192 {
 193         return text_.leftMargin(pit_, row_.pos());
 194 }
 195
 196
 197 void RowPainter::paintInset(pos_type const pos)
 198 {
 199         InsetBase const * inset = pars_[pit_].getInset(pos);
 200         BOOST_ASSERT(inset);
 201         PainterInfo pi(const_cast<BufferView *>(&bv_), pain_);
 202         pi.base.font = getFont(pos);
 203         inset->drawSelection(pi, int(x_), yo_ + row_.baseline());
 204         inset->draw(pi, int(x_), yo_ + row_.baseline());
 205         x_ += inset->width();
 206 }
 207
 208
 209 void RowPainter::paintHebrewComposeChar(pos_type & vpos)
 210 {
 211         pos_type pos = text_.bidi.vis2log(vpos);
 212
 213         string str;
 214
 215         // first char
 216         char c = pars_[pit_].getChar(pos);
 217         str += c;
 218         ++vpos;
 219
 220         LyXFont const & font = getFont(pos);
 221         int const width = font_metrics::width(c, font);
 222         int dx = 0;
 223
 224         for (pos_type i = pos - 1; i >= 0; --i) {
 225                 c = pars_[pit_].getChar(i);
 226                 if (!Encodings::IsComposeChar_hebrew(c)) {
 227                         if (IsPrintableNonspace(c)) {
 228                                 int const width2 = singleWidth(i, c);
 229                                 // dalet / resh
 230                                 dx = (c == 'ø' || c == 'ã')
 231                                         ? width2 - width
 232                                         : (width2 - width) / 2;
 233                         }
 234                         break;
 235                 }
 236         }
 237
 238         // Draw nikud
 239         pain_.text(int(x_) + dx, yo_ + row_.baseline(), str, font);
 240 }
 241
 242
 243 void RowPainter::paintArabicComposeChar(pos_type & vpos)
 244 {
 245         pos_type pos = text_.bidi.vis2log(vpos);
 246         string str;
 247
 248         // first char
 249         char c = pars_[pit_].getChar(pos);
 250         c = pars_[pit_].transformChar(c, pos);
 251         str += c;
 252         ++vpos;
 253
 254         LyXFont const & font = getFont(pos);
 255         int const width = font_metrics::width(c, font);
 256         int dx = 0;
 257
 258         for (pos_type i = pos - 1; i >= 0; --i) {
 259                 c = pars_[pit_].getChar(i);
 260                 if (!Encodings::IsComposeChar_arabic(c)) {
 261                         if (IsPrintableNonspace(c)) {
 262                                 int const width2 = singleWidth(i, c);
 263                                 dx = (width2 - width) / 2;
 264                         }
 265                         break;
 266                 }
 267         }
 268         // Draw nikud
 269         pain_.text(int(x_) + dx, yo_ + row_.baseline(), str, font);
 270 }
 271
 272
 273 void RowPainter::paintChars(pos_type & vpos, bool hebrew, bool arabic)
 274 {
 275         pos_type pos = text_.bidi.vis2log(vpos);
 276         pos_type const end = row_.endpos();
 277         LyXFont orig_font = getFont(pos);
 278
 279         // first character
 280         string str;
 281         str += pars_[pit_].getChar(pos);
 282         if (arabic) {
 283                 unsigned char c = str[0];
 284                 str[0] = pars_[pit_].transformChar(c, pos);
 285         }
 286
 287         bool prev_struckout = isDeletedText(pars_[pit_], pos);
 288         bool prev_newtext = isInsertedText(pars_[pit_], pos);
 289
 290         // collect as much similar chars as we can
 291         for (++vpos; vpos < end && (pos = text_.bidi.vis2log(vpos)) >= 0; ++vpos) {
 292                 char c = pars_[pit_].getChar(pos);
 293
 294                 if (!IsPrintableNonspace(c))
 295                         break;
 296
 297                 if (prev_struckout != isDeletedText(pars_[pit_], pos))
 298                         break;
 299
 300                 if (prev_newtext != isInsertedText(pars_[pit_], pos))
 301                         break;
 302
 303                 if (arabic && Encodings::IsComposeChar_arabic(c))
 304                         break;
 305
 306                 if (hebrew && Encodings::IsComposeChar_hebrew(c))
 307                         break;
 308
 309                 if (orig_font != getFont(pos))
 310                         break;
 311
 312                 if (arabic)
 313                         c = pars_[pit_].transformChar(c, pos);
 314
 315                 str += c;
 316         }
 317
 318         if (prev_struckout)
 319                 orig_font.setColor(LColor::strikeout);
 320         else if (prev_newtext)
 321                 orig_font.setColor(LColor::newtext);
 322
 323         // Draw text and set the new x position
 324         //lyxerr << "paint row: yo_ " << yo_ << " baseline: " << row_.baseline()
 325         //      << "\n";
 326         pain_.text(int(x_), yo_ + row_.baseline(), str, orig_font);
 327         x_ += font_metrics::width(str, orig_font);
 328 }
 329
 330
 331 void RowPainter::paintForeignMark(double orig_x, LyXFont const & orig_font)
 332 {
 333         if (!lyxrc.mark_foreign_language)
 334                 return;
 335         if (orig_font.language() == latex_language)
 336                 return;
 337         if (orig_font.language() == bv_.buffer()->params().language)
 338                 return;
 339
 340         int const y = yo_ + row_.baseline() + 1;
 341         pain_.line(int(orig_x), y, int(x_), y, LColor::language);
 342 }
 343
 344
 345 void RowPainter::paintFromPos(pos_type & vpos)
 346 {
 347         pos_type const pos = text_.bidi.vis2log(vpos);
 348
 349         LyXFont const & orig_font = getFont(pos);
 350
 351         double const orig_x = x_;
 352
 353         char const c = pars_[pit_].getChar(pos);
 354
 355         if (c == Paragraph::META_INSET) {
 356                 paintInset(pos);
 357                 ++vpos;
 358                 paintForeignMark(orig_x, orig_font);
 359                 return;
 360         }
 361
 362         // usual characters, no insets
 363
 364         // special case languages
 365         bool const hebrew = (orig_font.language()->lang() == "hebrew");
 366         bool const arabic =
 367                 orig_font.language()->lang() == "arabic" &&
 368                 (lyxrc.font_norm_type == LyXRC::ISO_8859_6_8 ||
 369                 lyxrc.font_norm_type == LyXRC::ISO_10646_1);
 370
 371         // draw as many chars as we can
 372         if ((!hebrew && !arabic)
 373                 || (hebrew && !Encodings::IsComposeChar_hebrew(c))
 374                 || (arabic && !Encodings::IsComposeChar_arabic(c))) {
 375                 paintChars(vpos, hebrew, arabic);
 376         } else if (hebrew) {
 377                 paintHebrewComposeChar(vpos);
 378         } else if (arabic) {
 379                 paintArabicComposeChar(vpos);
 380         }
 381
 382         paintForeignMark(orig_x, orig_font);
 383 }
 384
 385
 386 void RowPainter::paintBackground()
 387 {
 388         int const x = int(xo_);
 389         int const y = yo_ < 0 ? 0 : yo_;
 390         int const h = yo_ < 0 ? row_.height() + yo_ : row_.height();
 391         pain_.fillRectangle(x, y, width_, h, text_.backgroundColor());
 392 }
 393
 394
 395 void RowPainter::paintSelection()
 396 {
 397         bool const is_rtl = text_.isRTL(pars_[pit_]);
 398
 399         // the current selection
 400         LCursor const & cur = bv_.cursor();
 401         int const starty = text_.cursorY(cur.selBegin());
 402         int const endy = text_.cursorY(cur.selEnd());
 403         par_type startpit = cur.selBegin().par();
 404         par_type endpit = cur.selEnd().par();
 405         RowList::iterator startrow = pars_[startpit].getRow(cur.selBegin().pos());
 406         RowList::iterator endrow = pars_[endpit].getRow(cur.selEnd().pos());
 407         int const h = row_.height();
 408
 409         int const row_y = text_.yo_ + pars_[pit_].y + row_.y_offset();
 410
 411         bool const sel_starts_here = startpit == pit_ && startrow == rit_;
 412         bool const sel_ends_here   = endpit == pit_ && endrow == rit_;
 413         bool const sel_on_one_row  = sel_starts_here && sel_ends_here;
 414
 415         if (text_.bidi.same_direction()) {
 416                 if (sel_on_one_row) {
 417                         int const startx = text_.cursorX(cur.selBegin());
 418                         int const endx = text_.cursorX(cur.selEnd());
 419                         int const x1 = is_rtl ? endx : startx;
 420                         int const x2 = is_rtl ? startx : endx;
 421                         pain_.fillRectangle(x1, yo_, x2 - x1, h, LColor::selection);
 422                 } else if (sel_starts_here) {
 423                         int const startx = text_.cursorX(cur.selBegin());
 424                         int const x1 = is_rtl ? int(xo_) : startx;
 425                         int const x2 = is_rtl ? startx : int(xo_) + width_;
 426                         pain_.fillRectangle(x1, yo_, x2 - x1, h, LColor::selection);
 427                 } else if (sel_ends_here) {
 428                         int const endx = text_.cursorX(cur.selEnd());
 429                         int const x1 = is_rtl ? endx : int(xo_);
 430                         int const x2 = is_rtl ? int(xo_) + width_ : endx;
 431                         pain_.fillRectangle(x1, yo_, x2 - x1, h, LColor::selection);
 432                 } else if (row_y > starty && row_y < endy) {
 433                         pain_.fillRectangle(int(xo_), yo_, width_, h, LColor::selection);
 434                 }
 435                 return;
 436         }
 437
 438         if ((startpit != pit_ && startrow != rit_ && !is_rtl)
 439                 || (endpit != pit_ && endrow != rit_ && is_rtl))
 440                 pain_.fillRectangle(int(xo_), yo_,
 441                         int(x_), h, LColor::selection);
 442
 443         pos_type const body_pos = pars_[pit_].beginOfBody();
 444         pos_type const end = row_.endpos();
 445         double tmpx = x_;
 446
 447         for (pos_type vpos = row_.pos(); vpos < end; ++vpos)  {
 448                 pos_type pos = text_.bidi.vis2log(vpos);
 449                 double const old_tmpx = tmpx;
 450                 if (body_pos > 0 && pos == body_pos - 1) {
 451                         LyXLayout_ptr const & layout = pars_[pit_].layout();
 452                         LyXFont const lfont = getLabelFont();
 453
 454                         tmpx += label_hfill_ + font_metrics::width(layout->labelsep, lfont);
 455
 456                         if (pars_[pit_].isLineSeparator(body_pos - 1))
 457                                 tmpx -= singleWidth(body_pos - 1);
 458                 }
 459
 460                 tmpx += singleWidth(pos);
 461
 462                 if (hfillExpansion(pars_[pit_], row_, pos)) {
 463                         if (pos >= body_pos)
 464                                 tmpx += hfill_;
 465                         else
 466                                 tmpx += label_hfill_;
 467                 } else {
 468                         if (pars_[pit_].isSeparator(pos) && pos >= body_pos)
 469                                 tmpx += separator_;
 470                 }
 471
 472                 if (((startpit != pit_ && startrow != rit_)
 473                                 || cur.selBegin().pos() <= pos) &&
 474                         ((endpit != pit_ && endrow != rit_)
 475                                 || pos < cur.selEnd().pos())) {
 476                         // Here we do not use x_ as xo_ was added to x_.
 477                         pain_.fillRectangle(int(old_tmpx), yo_,
 478                                 int(tmpx - old_tmpx + 1), h, LColor::selection);
 479                 }
 480         }
 481
 482         if ((startpit != pit_ && startrow != rit_ && is_rtl) ||
 483             (endpit != pit_ && endrow != rit_ && !is_rtl)) {
 484                 pain_.fillRectangle(int(xo_ + tmpx),
 485                         yo_, int(width_ - tmpx), h, LColor::selection);
 486         }
 487 }
 488
 489
 490 void RowPainter::paintChangeBar()
 491 {
 492         pos_type const start = row_.pos();
 493         pos_type const end = row_.endpos();
 494
 495         if (start == end || !pars_[pit_].isChanged(start, end - 1))
 496                 return;
 497
 498         int const height = text_.isLastRow(pit_, row_)
 499                 ? row_.baseline()
 500                 : row_.height() + boost::next(rit_)->top_of_text();
 501
 502         pain_.fillRectangle(4, yo_, 5, height, LColor::changebar);
 503 }
 504
 505
 506 void RowPainter::paintAppendix()
 507 {
 508         if (!pars_[pit_].params().appendix())
 509                 return;
 510
 511         int y = yo_;
 512
 513         if (pars_[pit_].params().startOfAppendix())
 514                 y += 2 * defaultRowHeight();
 515
 516         pain_.line(1, y, 1, yo_ + row_.height(), LColor::appendix);
 517         pain_.line(width_ - 2, y, width_ - 2, yo_ + row_.height(), LColor::appendix);
 518 }
 519
 520
 521 void RowPainter::paintDepthBar()
 522 {
 523         Paragraph::depth_type const depth = pars_[pit_].getDepth();
 524
 525         if (depth <= 0)
 526                 return;
 527
 528         Paragraph::depth_type prev_depth = 0;
 529         if (!text_.isFirstRow(pit_, row_)) {
 530                 par_type pit2 = pit_;
 531                 if (row_.pos() == 0)
 532                         --pit2;
 533                 prev_depth = pars_[pit2].getDepth();
 534         }
 535
 536         Paragraph::depth_type next_depth = 0;
 537         if (!text_.isLastRow(pit_, row_)) {
 538                 par_type pit2 = pit_;
 539                 if (row_.endpos() >= pars_[pit2].size())
 540                         ++pit2;
 541                 next_depth = pars_[pit2].getDepth();
 542         }
 543
 544         for (Paragraph::depth_type i = 1; i <= depth; ++i) {
 545                 int const w = NEST_MARGIN / 5;
 546                 int x = int(w * i + xo_);
 547                 // only consider the changebar space if we're drawing outer left
 548                 if (xo_ == 0)
 549                         x += CHANGEBAR_MARGIN;
 550                 int const h = yo_ + row_.height() - 1 - (i - next_depth - 1) * 3;
 551
 552                 pain_.line(x, yo_, x, h, LColor::depthbar);
 553
 554                 if (i > prev_depth)
 555                         pain_.fillRectangle(x, yo_, w, 2, LColor::depthbar);
 556                 if (i > next_depth)
 557                         pain_.fillRectangle(x, h, w, 2, LColor::depthbar);
 558         }
 559 }
 560
 561
 562 int RowPainter::paintAppendixStart(int y)
 563 {
 564         LyXFont pb_font;
 565         pb_font.setColor(LColor::appendix);
 566         pb_font.decSize();
 567
 568         string const label = _("Appendix");
 569         int w = 0;
 570         int a = 0;
 571         int d = 0;
 572         font_metrics::rectText(label, pb_font, w, a, d);
 573
 574         int const text_start = int(xo_ + (width_ - w) / 2);
 575         int const text_end = text_start + w;
 576
 577         pain_.rectText(text_start, y + d, label, pb_font, LColor::none, LColor::none);
 578
 579         pain_.line(int(xo_ + 1), y, text_start, y, LColor::appendix);
 580         pain_.line(text_end, y, int(xo_ + width_ - 2), y, LColor::appendix);
 581
 582         return 3 * defaultRowHeight();
 583 }
 584
 585
 586 void RowPainter::paintFirst()
 587 {
 588         ParagraphParameters const & parparams = pars_[pit_].params();
 589
 590         int y_top = 0;
 591
 592         // start of appendix?
 593         if (parparams.startOfAppendix())
 594                 y_top += paintAppendixStart(yo_ + y_top + 2 * defaultRowHeight());
 595
 596         Buffer const & buffer = *bv_.buffer();
 597
 598         LyXLayout_ptr const & layout = pars_[pit_].layout();
 599
 600         if (buffer.params().paragraph_separation == BufferParams::PARSEP_SKIP) {
 601                 if (pit_ != 0) {
 602                         if (layout->latextype == LATEX_PARAGRAPH
 603                                 && !pars_[pit_].getDepth()) {
 604                                 y_top += buffer.params().getDefSkip().inPixels(bv_);
 605                         } else {
 606                                 LyXLayout_ptr const & playout = pars_[pit_ - 1].layout();
 607                                 if (playout->latextype == LATEX_PARAGRAPH
 608                                         && !pars_[pit_ - 1].getDepth()) {
 609                                         // is it right to use defskip here, too? (AS)
 610                                         y_top += buffer.params().getDefSkip().inPixels(bv_);
 611                                 }
 612                         }
 613                 }
 614         }
 615
 616         bool const is_rtl = text_.isRTL(pars_[pit_]);
 617         bool const is_seq = isFirstInSequence(pit_, text_.paragraphs());
 618         //lyxerr << "paintFirst: " << pars_[pit_].id() << " is_seq: " << is_seq << std::endl;
 619
 620         // should we print a label?
 621         if (layout->labeltype >= LABEL_STATIC
 622             && (layout->labeltype != LABEL_STATIC
 623                       || layout->latextype != LATEX_ENVIRONMENT
 624                       || is_seq)) {
 625
 626                 LyXFont font = getLabelFont();
 627                 if (!pars_[pit_].getLabelstring().empty()) {
 628                         double x = x_;
 629                         string const str = pars_[pit_].getLabelstring();
 630
 631                         // this is special code for the chapter layout. This is
 632                         // printed in an extra row and has a pagebreak at
 633                         // the top.
 634                         if (layout->counter == "chapter") {
 635                                 if (buffer.params().secnumdepth >= 0) {
 636                                         float spacing_val = 1.0;
 637                                         if (!parparams.spacing().isDefault()) {
 638                                                 spacing_val = parparams.spacing().getValue();
 639                                         } else {
 640                                                 spacing_val = buffer.params().spacing().getValue();
 641                                         }
 642
 643                                         int const maxdesc =
 644                                                 int(font_metrics::maxDescent(font) * layout->spacing.getValue() * spacing_val)
 645                                                 + int(layout->parsep) * defaultRowHeight();
 646
 647                                         if (is_rtl) {
 648                                                 x = width_ - leftMargin() -
 649                                                         font_metrics::width(str, font);
 650                                         }
 651
 652                                         pain_.text(int(x),
 653                                                 yo_ + row_.baseline() -
 654                                                 row_.ascent_of_text() - maxdesc,
 655                                                 str, font);
 656                                 }
 657                         } else {
 658                                 if (is_rtl) {
 659                                         x = width_ - leftMargin()
 660                                                 + font_metrics::width(layout->labelsep, font);
 661                                 } else {
 662                                         x = x_ - font_metrics::width(layout->labelsep, font)
 663                                                 - font_metrics::width(str, font);
 664                                 }
 665
 666                                 pain_.text(int(x), yo_ + row_.baseline(), str, font);
 667                         }
 668                 }
 669
 670         // the labels at the top of an environment.
 671         // More or less for bibliography
 672         } else if (is_seq &&
 673                 (layout->labeltype == LABEL_TOP_ENVIRONMENT ||
 674                 layout->labeltype == LABEL_BIBLIO ||
 675                 layout->labeltype == LABEL_CENTERED_TOP_ENVIRONMENT)) {
 676                 LyXFont font = getLabelFont();
 677                 if (!pars_[pit_].getLabelstring().empty()) {
 678                         string const str = pars_[pit_].getLabelstring();
 679                         float spacing_val = 1.0;
 680                         if (!parparams.spacing().isDefault()) {
 681                                 spacing_val = parparams.spacing().getValue();
 682                         } else {
 683                                 spacing_val = buffer.params().spacing().getValue();
 684                         }
 685
 686                         int maxdesc =
 687                                 int(font_metrics::maxDescent(font) * layout->spacing.getValue() * spacing_val
 688                                 + (layout->labelbottomsep * defaultRowHeight()));
 689
 690                         double x = x_;
 691                         if (layout->labeltype == LABEL_CENTERED_TOP_ENVIRONMENT) {
 692                                 x = ((is_rtl ? leftMargin() : x_)
 693                                          + width_ - text_.rightMargin(pars_[pit_])) / 2;
 694                                 x -= font_metrics::width(str, font) / 2;
 695                         } else if (is_rtl) {
 696                                 x = width_ - leftMargin() -
 697                                         font_metrics::width(str, font);
 698                         }
 699                         pain_.text(int(x),
 700                             yo_ + row_.baseline() - row_.ascent_of_text() - maxdesc,
 701                                   str, font);
 702                 }
 703         }
 704 }
 705
 706
 707 void RowPainter::paintLast()
 708 {
 709         bool const is_rtl = text_.isRTL(pars_[pit_]);
 710         int const endlabel = getEndLabel(pit_, text_.paragraphs());
 711
 712         // draw an endlabel
 713         switch (endlabel) {
 714         case END_LABEL_BOX:
 715         case END_LABEL_FILLED_BOX: {
 716                 LyXFont const font = getLabelFont();
 717                 int const size = int(0.75 * font_metrics::maxAscent(font));
 718                 int const y = yo_ + row_.baseline() - size;
 719                 int x = is_rtl ? NEST_MARGIN + CHANGEBAR_MARGIN: width_ - size;
 720
 721                 if (width_ - int(row_.width()) <= size)
 722                         x += (size - width_ + row_.width() + 1) * (is_rtl ? -1 : 1);
 723
 724                 if (endlabel == END_LABEL_BOX)
 725                         pain_.rectangle(x, y, size, size, LColor::eolmarker);
 726                 else
 727                         pain_.fillRectangle(x, y, size, size, LColor::eolmarker);
 728                 break;
 729         }
 730
 731         case END_LABEL_STATIC: {
 732                 LyXFont font = getLabelFont();
 733                 string const & str = pars_[pit_].layout()->endlabelstring();
 734                 double const x = is_rtl ?
 735                         x_ - font_metrics::width(str, font)
 736                         : - text_.rightMargin(pars_[pit_]) - row_.width();
 737                 pain_.text(int(x), yo_ + row_.baseline(), str, font);
 738                 break;
 739         }
 740
 741         case END_LABEL_NO_LABEL:
 742                 break;
 743         }
 744 }
 745
 746
 747 void RowPainter::paintText()
 748 {
 749         pos_type const end = row_.endpos();
 750         pos_type body_pos = pars_[pit_].beginOfBody();
 751         if (body_pos > 0 &&
 752                 (body_pos > end || !pars_[pit_].isLineSeparator(body_pos - 1))) {
 753                 body_pos = 0;
 754         }
 755
 756         LyXLayout_ptr const & layout = pars_[pit_].layout();
 757
 758         bool running_strikeout = false;
 759         bool is_struckout = false;
 760         int last_strikeout_x = 0;
 761
 762         for (pos_type vpos = row_.pos(); vpos < end; ) {
 763                 if (x_ > bv_.workWidth())
 764                         break;
 765
 766                 pos_type pos = text_.bidi.vis2log(vpos);
 767
 768                 if (pos >= pars_[pit_].size()) {
 769                         ++vpos;
 770                         continue;
 771                 }
 772
 773                 if (x_ + singleWidth(pos) < 0) {
 774                         x_ += singleWidth(pos);
 775                         ++vpos;
 776                         continue;
 777                 }
 778
 779                 is_struckout = isDeletedText(pars_[pit_], pos);
 780
 781                 if (is_struckout && !running_strikeout) {
 782                         running_strikeout = true;
 783                         last_strikeout_x = int(x_);
 784                 }
 785
 786                 bool const highly_editable_inset = pars_[pit_].isInset(pos)
 787                         && isHighlyEditableInset(pars_[pit_].getInset(pos));
 788
 789                 // if we reach the end of a struck out range, paint it
 790                 // we also don't paint across things like tables
 791                 if (running_strikeout && (highly_editable_inset || !is_struckout)) {
 792                         int const middle = yo_ + (row_.baseline() + row_.top_of_text()) / 2;
 793                         pain_.line(last_strikeout_x, middle, int(x_), middle,
 794                                 LColor::strikeout, Painter::line_solid, Painter::line_thin);
 795                         running_strikeout = false;
 796                 }
 797
 798                 if (body_pos > 0 && pos == body_pos - 1) {
 799                         int const lwidth = font_metrics::width(layout->labelsep,
 800                                 getLabelFont());
 801
 802                         x_ += label_hfill_ + lwidth - singleWidth(body_pos - 1);
 803                 }
 804
 805                 if (pars_[pit_].isHfill(pos)) {
 806                         x_ += 1;
 807
 808                         int const y0 = yo_ + row_.baseline();
 809                         int const y1 = y0 - defaultRowHeight() / 2;
 810
 811                         pain_.line(int(x_), y1, int(x_), y0, LColor::added_space);
 812
 813                         if (hfillExpansion(pars_[pit_], row_, pos)) {
 814                                 int const y2 = (y0 + y1) / 2;
 815
 816                                 if (pos >= body_pos) {
 817                                         pain_.line(int(x_), y2, int(x_ + hfill_), y2,
 818                                                   LColor::added_space,
 819                                                   Painter::line_onoffdash);
 820                                         x_ += hfill_;
 821                                 } else {
 822                                         pain_.line(int(x_), y2, int(x_ + label_hfill_), y2,
 823                                                   LColor::added_space,
 824                                                   Painter::line_onoffdash);
 825                                         x_ += label_hfill_;
 826                                 }
 827                                 pain_.line(int(x_), y1, int(x_), y0, LColor::added_space);
 828                         }
 829                         x_ += 2;
 830                         ++vpos;
 831                 } else if (pars_[pit_].isSeparator(pos)) {
 832                         x_ += singleWidth(pos);
 833                         if (pos >= body_pos)
 834                                 x_ += separator_;
 835                         ++vpos;
 836                 } else {
 837                         paintFromPos(vpos);
 838                 }
 839         }
 840
 841         // if we reach the end of a struck out range, paint it
 842         if (running_strikeout) {
 843                 int const middle = yo_ + (row_.baseline() + row_.top_of_text()) / 2;
 844                 pain_.line(last_strikeout_x, middle, int(x_), middle,
 845                         LColor::strikeout, Painter::line_solid, Painter::line_thin);
 846                 running_strikeout = false;
 847         }
 848 }
 849
 850
 851 int paintPars(BufferView const & bv, Painter & pain,
 852               LyXText const & text, par_type pit, par_type end)
 853 {
 854         //lyxerr << "  paintRows: pit: " << &*pit << endl;
 855         ParagraphList & pars = text.paragraphs();
 856
 857         int y = pars[pit].y + text.yo_ - bv.top_y();
 858         int const y2 = pain.paperHeight();
 859
 860         for (; pit != end; ++pit) {
 861                 RowList::iterator row = pars[pit].rows.begin();
 862                 RowList::iterator rend = pars[pit].rows.end();
 863
 864                 for ( ; row != rend; ++row) {
 865                         RowPainter(bv, pain, text, pit, row, y);
 866                         y += row->height();
 867                         if (y >= y2)
 868                                 break;
 869                 }
 870
 871         }
 872         return y;
 873 }
 874
 875
 876 } // namespace anon
 877
 878
 879 void refreshPar(BufferView const & bv, LyXText const & text, par_type pit)
 880 {
 881
 882         static NullPainter nop;
 883         paintPars(bv, nop, text, pit, pit + 1);
 884 }
 885
 886
 887 int paintText(BufferView const & bv)
 888 {
 889         par_type pit, end;
 890         getParsInRange(bv.text()->paragraphs(), bv.top_y(),
 891                        bv.top_y() + bv.workHeight(), pit, end);
 892         //lyxerr << "top_y: " << bv.top_y() << " y: " << pit->y << endl;
 893         return paintPars(bv, bv.painter(), *bv.text(), pit, end);
 894 }
 895
 896
 897 void paintTextInset(LyXText const & text, PainterInfo & pi)
 898 {
 899         paintPars(*pi.base.bv, pi.pain, text, 0, text.paragraphs().size());
 900 }