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 "coordcache.h"
  18 #include "cursor.h"
  19 #include "debug.h"
  20 #include "bufferparams.h"
  21 #include "BufferView.h"
  22 #include "encoding.h"
  23 #include "gettext.h"
  24 #include "language.h"
  25 #include "LColor.h"
  26 #include "lyxrc.h"
  27 #include "lyxrow.h"
  28 #include "lyxrow_funcs.h"
  29 #include "metricsinfo.h"
  30 #include "paragraph.h"
  31 #include "paragraph_funcs.h"
  32 #include "ParagraphParameters.h"
  33 #include "vspace.h"
  34
  35 #include "frontends/font_metrics.h"
  36 #include "frontends/nullpainter.h"
  37 #include "frontends/Painter.h"
  38
  39 #include "insets/insettext.h"
  40
  41 #include "support/textutils.h"
  42
  43 using lyx::pos_type;
  44 using lyx::par_type;
  45
  46 using std::endl;
  47 using std::max;
  48 using std::string;
  49
  50 extern int NEST_MARGIN;
  51 extern int CHANGEBAR_MARGIN;
  52
  53
  54 namespace {
  55
  56 /**
  57  * A class used for painting an individual row of text.
  58  */
  59 class RowPainter {
  60 public:
  61         /// initialise and run painter
  62         RowPainter(BufferView const & bv, Painter & pain, LyXText const & text,
  63                 par_type pit, RowList::iterator rit, int y);
  64 private:
  65         // paint various parts
  66         void paintBackground();
  67         void paintSelection();
  68         void paintAppendix();
  69         void paintDepthBar();
  70         void paintChangeBar();
  71         void paintFirst();
  72         void paintLast();
  73         void paintForeignMark(double orig_x, LyXFont const & orig_font);
  74         void paintHebrewComposeChar(lyx::pos_type & vpos);
  75         void paintArabicComposeChar(lyx::pos_type & vpos);
  76         void paintChars(lyx::pos_type & vpos, bool hebrew, bool arabic);
  77         int paintAppendixStart(int y);
  78         void paintText();
  79         void paintFromPos(lyx::pos_type & vpos);
  80         void paintInset(lyx::pos_type const pos);
  81
  82         /// return left margin
  83         int leftMargin() const;
  84
  85         /// return the font at the given pos
  86         LyXFont const getFont(lyx::pos_type pos) const;
  87
  88         /// return the label font for this row
  89         LyXFont const getLabelFont() const;
  90
  91         /// return pixel width for the given pos
  92         int singleWidth(lyx::pos_type pos) const;
  93         int singleWidth(lyx::pos_type pos, char c) const;
  94
  95         /// bufferview to paint on
  96         BufferView const & bv_;
  97
  98         /// Painter to use
  99         Painter & pain_;
 100
 101         /// LyXText for the row
 102         LyXText const & text_;
 103         ParagraphList & pars_;
 104
 105         /// The row to paint
 106         RowList::iterator const rit_;
 107         Row & row_;
 108
 109         /// Row's paragraph
 110         mutable par_type pit_;
 111
 112         // Looks ugly - is
 113         double xo_;
 114         int yo_;
 115         double x_;
 116         int width_;
 117         double separator_;
 118         double hfill_;
 119         double label_hfill_;
 120 };
 121
 122
 123 RowPainter::RowPainter(BufferView const & bv, Painter & pain,
 124         LyXText const & text, par_type pit, RowList::iterator rit, int y)
 125         : bv_(bv), pain_(pain), text_(text), pars_(text.paragraphs()),
 126           rit_(rit), row_(*rit), pit_(pit),
 127           xo_(text_.xo_), yo_(y), width_(text_.width())
 128 {
 129         //lyxerr << "RowPainter: x: " << x_ << " xo: " << xo << " yo: " << yo
 130         //      << " pit->y: " << pit_->y
 131         //      << " row: " << (pars_[pit_].size() ? pars_[pit_].getChar(row_.pos()) : 'X') << endl;
 132         RowMetrics m = text_.computeRowMetrics(pit, row_);
 133         x_ = m.x + xo_;
 134         separator_ = m.separator;
 135         hfill_ = m.hfill;
 136         label_hfill_ = m.label_hfill;
 137
 138         // background has already been cleared.
 139         if (&text_ == bv_.text())
 140                 paintBackground();
 141
 142         // paint the selection background
 143         if (bv_.cursor().selection() && &text_ == bv_.cursor().text())
 144                 paintSelection();
 145
 146         // vertical lines for appendix
 147         paintAppendix();
 148
 149         // environment depth brackets
 150         paintDepthBar();
 151
 152         // changebar
 153         paintChangeBar();
 154
 155         if (row_.pos() == 0)
 156                 paintFirst();
 157
 158         if (row_.endpos() >= pars_[pit_].size())
 159                 paintLast();
 160
 161         // paint text
 162         paintText();
 163 }
 164
 165
 166 /// "temporary"
 167 LyXFont const RowPainter::getFont(pos_type pos) const
 168 {
 169         return text_.getFont(pit_, pos);
 170 }
 171
 172
 173 int RowPainter::singleWidth(lyx::pos_type pos) const
 174 {
 175         return text_.singleWidth(pit_, pos);
 176 }
 177
 178
 179 int RowPainter::singleWidth(lyx::pos_type pos, char c) const
 180 {
 181         LyXFont const & font = text_.getFont(pit_, pos);
 182         return text_.singleWidth(pit_, pos, c, font);
 183 }
 184
 185
 186 LyXFont const RowPainter::getLabelFont() const
 187 {
 188         return text_.getLabelFont(pit_);
 189 }
 190
 191
 192 int RowPainter::leftMargin() const
 193 {
 194         return text_.leftMargin(pit_, row_.pos());
 195 }
 196
 197
 198 void RowPainter::paintInset(pos_type const pos)
 199 {
 200         InsetBase const * inset = pars_[pit_].getInset(pos);
 201         BOOST_ASSERT(inset);
 202         PainterInfo pi(const_cast<BufferView *>(&bv_), pain_);
 203         pi.base.font = getFont(pos);
 204         theCoords.insets_.add(inset, int(x_), yo_ + row_.baseline());
 205         inset->drawSelection(pi, int(x_), yo_ + row_.baseline());
 206         inset->draw(pi, int(x_), yo_ + row_.baseline());
 207         x_ += inset->width();
 208 }
 209
 210
 211 void RowPainter::paintHebrewComposeChar(pos_type & vpos)
 212 {
 213         pos_type pos = text_.bidi.vis2log(vpos);
 214
 215         string str;
 216
 217         // first char
 218         char c = pars_[pit_].getChar(pos);
 219         str += c;
 220         ++vpos;
 221
 222         LyXFont const & font = getFont(pos);
 223         int const width = font_metrics::width(c, font);
 224         int dx = 0;
 225
 226         for (pos_type i = pos - 1; i >= 0; --i) {
 227                 c = pars_[pit_].getChar(i);
 228                 if (!Encodings::IsComposeChar_hebrew(c)) {
 229                         if (IsPrintableNonspace(c)) {
 230                                 int const width2 = singleWidth(i, c);
 231                                 // dalet / resh
 232                                 dx = (c == 'ø' || c == 'ã')
 233                                         ? width2 - width
 234                                         : (width2 - width) / 2;
 235                         }
 236                         break;
 237                 }
 238         }
 239
 240         // Draw nikud
 241         pain_.text(int(x_) + dx, yo_ + row_.baseline(), str, font);
 242 }
 243
 244
 245 void RowPainter::paintArabicComposeChar(pos_type & vpos)
 246 {
 247         pos_type pos = text_.bidi.vis2log(vpos);
 248         string str;
 249
 250         // first char
 251         char c = pars_[pit_].getChar(pos);
 252         c = pars_[pit_].transformChar(c, pos);
 253         str += c;
 254         ++vpos;
 255
 256         LyXFont const & font = getFont(pos);
 257         int const width = font_metrics::width(c, font);
 258         int dx = 0;
 259
 260         for (pos_type i = pos - 1; i >= 0; --i) {
 261                 c = pars_[pit_].getChar(i);
 262                 if (!Encodings::IsComposeChar_arabic(c)) {
 263                         if (IsPrintableNonspace(c)) {
 264                                 int const width2 = singleWidth(i, c);
 265                                 dx = (width2 - width) / 2;
 266                         }
 267                         break;
 268                 }
 269         }
 270         // Draw nikud
 271         pain_.text(int(x_) + dx, yo_ + row_.baseline(), str, font);
 272 }
 273
 274
 275 void RowPainter::paintChars(pos_type & vpos, bool hebrew, bool arabic)
 276 {
 277         pos_type pos = text_.bidi.vis2log(vpos);
 278         pos_type const end = row_.endpos();
 279         LyXFont orig_font = getFont(pos);
 280
 281         // first character
 282         string str;
 283         str += pars_[pit_].getChar(pos);
 284         if (arabic) {
 285                 unsigned char c = str[0];
 286                 str[0] = pars_[pit_].transformChar(c, pos);
 287         }
 288
 289         bool prev_struckout = isDeletedText(pars_[pit_], pos);
 290         bool prev_newtext = isInsertedText(pars_[pit_], pos);
 291
 292         // collect as much similar chars as we can
 293         for (++vpos; vpos < end && (pos = text_.bidi.vis2log(vpos)) >= 0; ++vpos) {
 294                 char c = pars_[pit_].getChar(pos);
 295
 296                 if (!IsPrintableNonspace(c))
 297                         break;
 298
 299                 if (prev_struckout != isDeletedText(pars_[pit_], pos))
 300                         break;
 301
 302                 if (prev_newtext != isInsertedText(pars_[pit_], pos))
 303                         break;
 304
 305                 if (arabic && Encodings::IsComposeChar_arabic(c))
 306                         break;
 307
 308                 if (hebrew && Encodings::IsComposeChar_hebrew(c))
 309                         break;
 310
 311                 if (orig_font != getFont(pos))
 312                         break;
 313
 314                 if (arabic)
 315                         c = pars_[pit_].transformChar(c, pos);
 316
 317                 str += c;
 318         }
 319
 320         if (prev_struckout)
 321                 orig_font.setColor(LColor::strikeout);
 322         else if (prev_newtext)
 323                 orig_font.setColor(LColor::newtext);
 324
 325         // Draw text and set the new x position
 326         //lyxerr << "paint row: yo_ " << yo_ << " baseline: " << row_.baseline()
 327         //      << "\n";
 328         pain_.text(int(x_), yo_ + row_.baseline(), str, orig_font);
 329         x_ += font_metrics::width(str, orig_font);
 330 }
 331
 332
 333 void RowPainter::paintForeignMark(double orig_x, LyXFont const & orig_font)
 334 {
 335         if (!lyxrc.mark_foreign_language)
 336                 return;
 337         if (orig_font.language() == latex_language)
 338                 return;
 339         if (orig_font.language() == bv_.buffer()->params().language)
 340                 return;
 341
 342         int const y = yo_ + row_.baseline() + 1;
 343         pain_.line(int(orig_x), y, int(x_), y, LColor::language);
 344 }
 345
 346
 347 void RowPainter::paintFromPos(pos_type & vpos)
 348 {
 349         pos_type const pos = text_.bidi.vis2log(vpos);
 350
 351         LyXFont const & orig_font = getFont(pos);
 352
 353         double const orig_x = x_;
 354
 355         char const c = pars_[pit_].getChar(pos);
 356
 357         if (c == Paragraph::META_INSET) {
 358                 paintInset(pos);
 359                 ++vpos;
 360                 paintForeignMark(orig_x, orig_font);
 361                 return;
 362         }
 363
 364         // usual characters, no insets
 365
 366         // special case languages
 367         bool const hebrew = (orig_font.language()->lang() == "hebrew");
 368         bool const arabic =
 369                 orig_font.language()->lang() == "arabic" &&
 370                 (lyxrc.font_norm_type == LyXRC::ISO_8859_6_8 ||
 371                 lyxrc.font_norm_type == LyXRC::ISO_10646_1);
 372
 373         // draw as many chars as we can
 374         if ((!hebrew && !arabic)
 375                 || (hebrew && !Encodings::IsComposeChar_hebrew(c))
 376                 || (arabic && !Encodings::IsComposeChar_arabic(c))) {
 377                 paintChars(vpos, hebrew, arabic);
 378         } else if (hebrew) {
 379                 paintHebrewComposeChar(vpos);
 380         } else if (arabic) {
 381                 paintArabicComposeChar(vpos);
 382         }
 383
 384         paintForeignMark(orig_x, orig_font);
 385 }
 386
 387
 388 void RowPainter::paintBackground()
 389 {
 390         int const x = int(xo_);
 391         int const y = yo_ < 0 ? 0 : yo_;
 392         int const h = yo_ < 0 ? row_.height() + yo_ : row_.height();
 393         pain_.fillRectangle(x, y, width_, h, text_.backgroundColor());
 394 }
 395
 396
 397 void RowPainter::paintSelection()
 398 {
 399         bool const is_rtl = text_.isRTL(pars_[pit_]);
 400
 401         // the current selection
 402         LCursor const & cur = bv_.cursor();
 403         int const starty = text_.cursorY(cur.selBegin());
 404         int const endy = text_.cursorY(cur.selEnd());
 405         par_type startpit = cur.selBegin().par();
 406         par_type endpit = cur.selEnd().par();
 407         RowList::iterator startrow = pars_[startpit].getRow(cur.selBegin().pos());
 408         RowList::iterator endrow = pars_[endpit].getRow(cur.selEnd().pos());
 409         int const h = row_.height();
 410
 411         int const row_y = text_.yo_ + pars_[pit_].y + row_.y_offset();
 412
 413         bool const sel_starts_here = startpit == pit_ && startrow == rit_;
 414         bool const sel_ends_here   = endpit == pit_ && endrow == rit_;
 415         bool const sel_on_one_row  = sel_starts_here && sel_ends_here;
 416
 417         if (text_.bidi.same_direction()) {
 418                 if (sel_on_one_row) {
 419                         int const startx = text_.cursorX(cur.selBegin());
 420                         int const endx = text_.cursorX(cur.selEnd());
 421                         int const x1 = is_rtl ? endx : startx;
 422                         int const x2 = is_rtl ? startx : endx;
 423                         pain_.fillRectangle(x1, yo_, x2 - x1, h, LColor::selection);
 424                 } else if (sel_starts_here) {
 425                         int const startx = text_.cursorX(cur.selBegin());
 426                         int const x1 = is_rtl ? int(xo_) : startx;
 427                         int const x2 = is_rtl ? startx : int(xo_) + width_;
 428                         pain_.fillRectangle(x1, yo_, x2 - x1, h, LColor::selection);
 429                 } else if (sel_ends_here) {
 430                         int const endx = text_.cursorX(cur.selEnd());
 431                         int const x1 = is_rtl ? endx : int(xo_);
 432                         int const x2 = is_rtl ? int(xo_) + width_ : endx;
 433                         pain_.fillRectangle(x1, yo_, x2 - x1, h, LColor::selection);
 434                 } else if (row_y > starty && row_y < endy) {
 435                         pain_.fillRectangle(int(xo_), yo_, width_, h, LColor::selection);
 436                 }
 437                 return;
 438         }
 439
 440         if ((startpit != pit_ && startrow != rit_ && !is_rtl)
 441                 || (endpit != pit_ && endrow != rit_ && is_rtl))
 442                 pain_.fillRectangle(int(xo_), yo_,
 443                         int(x_), h, LColor::selection);
 444
 445         pos_type const body_pos = pars_[pit_].beginOfBody();
 446         pos_type const end = row_.endpos();
 447         double tmpx = x_;
 448
 449         for (pos_type vpos = row_.pos(); vpos < end; ++vpos)  {
 450                 pos_type pos = text_.bidi.vis2log(vpos);
 451                 double const old_tmpx = tmpx;
 452                 if (body_pos > 0 && pos == body_pos - 1) {
 453                         LyXLayout_ptr const & layout = pars_[pit_].layout();
 454                         LyXFont const lfont = getLabelFont();
 455
 456                         tmpx += label_hfill_ + font_metrics::width(layout->labelsep, lfont);
 457
 458                         if (pars_[pit_].isLineSeparator(body_pos - 1))
 459                                 tmpx -= singleWidth(body_pos - 1);
 460                 }
 461
 462                 tmpx += singleWidth(pos);
 463
 464                 if (hfillExpansion(pars_[pit_], row_, pos)) {
 465                         if (pos >= body_pos)
 466                                 tmpx += hfill_;
 467                         else
 468                                 tmpx += label_hfill_;
 469                 } else {
 470                         if (pars_[pit_].isSeparator(pos) && pos >= body_pos)
 471                                 tmpx += separator_;
 472                 }
 473
 474                 if (((startpit != pit_ && startrow != rit_)
 475                                 || cur.selBegin().pos() <= pos) &&
 476                         ((endpit != pit_ && endrow != rit_)
 477                                 || pos < cur.selEnd().pos())) {
 478                         // Here we do not use x_ as xo_ was added to x_.
 479                         pain_.fillRectangle(int(old_tmpx), yo_,
 480                                 int(tmpx - old_tmpx + 1), h, LColor::selection);
 481                 }
 482         }
 483
 484         if ((startpit != pit_ && startrow != rit_ && is_rtl) ||
 485             (endpit != pit_ && endrow != rit_ && !is_rtl)) {
 486                 pain_.fillRectangle(int(xo_ + tmpx),
 487                         yo_, int(width_ - tmpx), h, LColor::selection);
 488         }
 489 }
 490
 491
 492 void RowPainter::paintChangeBar()
 493 {
 494         pos_type const start = row_.pos();
 495         pos_type const end = row_.endpos();
 496
 497         if (start == end || !pars_[pit_].isChanged(start, end - 1))
 498                 return;
 499
 500         int const height = text_.isLastRow(pit_, row_)
 501                 ? row_.baseline()
 502                 : row_.height() + boost::next(rit_)->top_of_text();
 503
 504         pain_.fillRectangle(4, yo_, 5, height, LColor::changebar);
 505 }
 506
 507
 508 void RowPainter::paintAppendix()
 509 {
 510         if (!pars_[pit_].params().appendix())
 511                 return;
 512
 513         int y = yo_;
 514
 515         if (pars_[pit_].params().startOfAppendix())
 516                 y += 2 * defaultRowHeight();
 517
 518         pain_.line(1, y, 1, yo_ + row_.height(), LColor::appendix);
 519         pain_.line(width_ - 2, y, width_ - 2, yo_ + row_.height(), LColor::appendix);
 520 }
 521
 522
 523 void RowPainter::paintDepthBar()
 524 {
 525         Paragraph::depth_type const depth = pars_[pit_].getDepth();
 526
 527         if (depth <= 0)
 528                 return;
 529
 530         Paragraph::depth_type prev_depth = 0;
 531         if (!text_.isFirstRow(pit_, row_)) {
 532                 par_type pit2 = pit_;
 533                 if (row_.pos() == 0)
 534                         --pit2;
 535                 prev_depth = pars_[pit2].getDepth();
 536         }
 537
 538         Paragraph::depth_type next_depth = 0;
 539         if (!text_.isLastRow(pit_, row_)) {
 540                 par_type pit2 = pit_;
 541                 if (row_.endpos() >= pars_[pit2].size())
 542                         ++pit2;
 543                 next_depth = pars_[pit2].getDepth();
 544         }
 545
 546         for (Paragraph::depth_type i = 1; i <= depth; ++i) {
 547                 int const w = NEST_MARGIN / 5;
 548                 int x = int(w * i + xo_);
 549                 // only consider the changebar space if we're drawing outer left
 550                 if (xo_ == 0)
 551                         x += CHANGEBAR_MARGIN;
 552                 int const h = yo_ + row_.height() - 1 - (i - next_depth - 1) * 3;
 553
 554                 pain_.line(x, yo_, x, h, LColor::depthbar);
 555
 556                 if (i > prev_depth)
 557                         pain_.fillRectangle(x, yo_, w, 2, LColor::depthbar);
 558                 if (i > next_depth)
 559                         pain_.fillRectangle(x, h, w, 2, LColor::depthbar);
 560         }
 561 }
 562
 563
 564 int RowPainter::paintAppendixStart(int y)
 565 {
 566         LyXFont pb_font;
 567         pb_font.setColor(LColor::appendix);
 568         pb_font.decSize();
 569
 570         string const label = _("Appendix");
 571         int w = 0;
 572         int a = 0;
 573         int d = 0;
 574         font_metrics::rectText(label, pb_font, w, a, d);
 575
 576         int const text_start = int(xo_ + (width_ - w) / 2);
 577         int const text_end = text_start + w;
 578
 579         pain_.rectText(text_start, y + d, label, pb_font, LColor::none, LColor::none);
 580
 581         pain_.line(int(xo_ + 1), y, text_start, y, LColor::appendix);
 582         pain_.line(text_end, y, int(xo_ + width_ - 2), y, LColor::appendix);
 583
 584         return 3 * defaultRowHeight();
 585 }
 586
 587
 588 void RowPainter::paintFirst()
 589 {
 590         ParagraphParameters const & parparams = pars_[pit_].params();
 591
 592         int y_top = 0;
 593
 594         // start of appendix?
 595         if (parparams.startOfAppendix())
 596                 y_top += paintAppendixStart(yo_ + y_top + 2 * defaultRowHeight());
 597
 598         Buffer const & buffer = *bv_.buffer();
 599
 600         LyXLayout_ptr const & layout = pars_[pit_].layout();
 601
 602         if (buffer.params().paragraph_separation == BufferParams::PARSEP_SKIP) {
 603                 if (pit_ != 0) {
 604                         if (layout->latextype == LATEX_PARAGRAPH
 605                                 && !pars_[pit_].getDepth()) {
 606                                 y_top += buffer.params().getDefSkip().inPixels(bv_);
 607                         } else {
 608                                 LyXLayout_ptr const & playout = pars_[pit_ - 1].layout();
 609                                 if (playout->latextype == LATEX_PARAGRAPH
 610                                         && !pars_[pit_ - 1].getDepth()) {
 611                                         // is it right to use defskip here, too? (AS)
 612                                         y_top += buffer.params().getDefSkip().inPixels(bv_);
 613                                 }
 614                         }
 615                 }
 616         }
 617
 618         bool const is_rtl = text_.isRTL(pars_[pit_]);
 619         bool const is_seq = isFirstInSequence(pit_, text_.paragraphs());
 620         //lyxerr << "paintFirst: " << pars_[pit_].id() << " is_seq: " << is_seq << std::endl;
 621
 622         // should we print a label?
 623         if (layout->labeltype >= LABEL_STATIC
 624             && (layout->labeltype != LABEL_STATIC
 625                       || layout->latextype != LATEX_ENVIRONMENT
 626                       || is_seq)) {
 627
 628                 LyXFont font = getLabelFont();
 629                 if (!pars_[pit_].getLabelstring().empty()) {
 630                         double x = x_;
 631                         string const str = pars_[pit_].getLabelstring();
 632
 633                         // this is special code for the chapter layout. This is
 634                         // printed in an extra row and has a pagebreak at
 635                         // the top.
 636                         if (layout->counter == "chapter") {
 637                                 if (buffer.params().secnumdepth >= 0) {
 638                                         float spacing_val = 1.0;
 639                                         if (!parparams.spacing().isDefault()) {
 640                                                 spacing_val = parparams.spacing().getValue();
 641                                         } else {
 642                                                 spacing_val = buffer.params().spacing().getValue();
 643                                         }
 644
 645                                         int const maxdesc =
 646                                                 int(font_metrics::maxDescent(font) * layout->spacing.getValue() * spacing_val)
 647                                                 + int(layout->parsep) * defaultRowHeight();
 648
 649                                         if (is_rtl) {
 650                                                 x = width_ - leftMargin() -
 651                                                         font_metrics::width(str, font);
 652                                         }
 653
 654                                         pain_.text(int(x),
 655                                                 yo_ + row_.baseline() -
 656                                                 row_.ascent_of_text() - maxdesc,
 657                                                 str, font);
 658                                 }
 659                         } else {
 660                                 if (is_rtl) {
 661                                         x = width_ - leftMargin()
 662                                                 + font_metrics::width(layout->labelsep, font);
 663                                 } else {
 664                                         x = x_ - font_metrics::width(layout->labelsep, font)
 665                                                 - font_metrics::width(str, font);
 666                                 }
 667
 668                                 pain_.text(int(x), yo_ + row_.baseline(), str, font);
 669                         }
 670                 }
 671
 672         // the labels at the top of an environment.
 673         // More or less for bibliography
 674         } else if (is_seq &&
 675                 (layout->labeltype == LABEL_TOP_ENVIRONMENT ||
 676                 layout->labeltype == LABEL_BIBLIO ||
 677                 layout->labeltype == LABEL_CENTERED_TOP_ENVIRONMENT)) {
 678                 LyXFont font = getLabelFont();
 679                 if (!pars_[pit_].getLabelstring().empty()) {
 680                         string const str = pars_[pit_].getLabelstring();
 681                         float spacing_val = 1.0;
 682                         if (!parparams.spacing().isDefault()) {
 683                                 spacing_val = parparams.spacing().getValue();
 684                         } else {
 685                                 spacing_val = buffer.params().spacing().getValue();
 686                         }
 687
 688                         int maxdesc =
 689                                 int(font_metrics::maxDescent(font) * layout->spacing.getValue() * spacing_val
 690                                 + (layout->labelbottomsep * defaultRowHeight()));
 691
 692                         double x = x_;
 693                         if (layout->labeltype == LABEL_CENTERED_TOP_ENVIRONMENT) {
 694                                 x = ((is_rtl ? leftMargin() : x_)
 695                                          + width_ - text_.rightMargin(pars_[pit_])) / 2;
 696                                 x -= font_metrics::width(str, font) / 2;
 697                         } else if (is_rtl) {
 698                                 x = width_ - leftMargin() -
 699                                         font_metrics::width(str, font);
 700                         }
 701                         pain_.text(int(x),
 702                             yo_ + row_.baseline() - row_.ascent_of_text() - maxdesc,
 703                                   str, font);
 704                 }
 705         }
 706 }
 707
 708
 709 void RowPainter::paintLast()
 710 {
 711         bool const is_rtl = text_.isRTL(pars_[pit_]);
 712         int const endlabel = getEndLabel(pit_, text_.paragraphs());
 713
 714         // draw an endlabel
 715         switch (endlabel) {
 716         case END_LABEL_BOX:
 717         case END_LABEL_FILLED_BOX: {
 718                 LyXFont const font = getLabelFont();
 719                 int const size = int(0.75 * font_metrics::maxAscent(font));
 720                 int const y = yo_ + row_.baseline() - size;
 721                 int x = is_rtl ? NEST_MARGIN + CHANGEBAR_MARGIN: width_ - size;
 722
 723                 if (width_ - int(row_.width()) <= size)
 724                         x += (size - width_ + row_.width() + 1) * (is_rtl ? -1 : 1);
 725
 726                 if (endlabel == END_LABEL_BOX)
 727                         pain_.rectangle(x, y, size, size, LColor::eolmarker);
 728                 else
 729                         pain_.fillRectangle(x, y, size, size, LColor::eolmarker);
 730                 break;
 731         }
 732
 733         case END_LABEL_STATIC: {
 734                 LyXFont font = getLabelFont();
 735                 string const & str = pars_[pit_].layout()->endlabelstring();
 736                 double const x = is_rtl ?
 737                         x_ - font_metrics::width(str, font)
 738                         : - text_.rightMargin(pars_[pit_]) - row_.width();
 739                 pain_.text(int(x), yo_ + row_.baseline(), str, font);
 740                 break;
 741         }
 742
 743         case END_LABEL_NO_LABEL:
 744                 break;
 745         }
 746 }
 747
 748
 749 void RowPainter::paintText()
 750 {
 751         pos_type const end = row_.endpos();
 752         pos_type body_pos = pars_[pit_].beginOfBody();
 753         if (body_pos > 0 &&
 754                 (body_pos > end || !pars_[pit_].isLineSeparator(body_pos - 1))) {
 755                 body_pos = 0;
 756         }
 757
 758         LyXLayout_ptr const & layout = pars_[pit_].layout();
 759
 760         bool running_strikeout = false;
 761         bool is_struckout = false;
 762         int last_strikeout_x = 0;
 763
 764         for (pos_type vpos = row_.pos(); vpos < end; ) {
 765                 if (x_ > bv_.workWidth())
 766                         break;
 767
 768                 pos_type pos = text_.bidi.vis2log(vpos);
 769
 770                 if (pos >= pars_[pit_].size()) {
 771                         ++vpos;
 772                         continue;
 773                 }
 774
 775                 if (x_ + singleWidth(pos) < 0) {
 776                         x_ += singleWidth(pos);
 777                         ++vpos;
 778                         continue;
 779                 }
 780
 781                 is_struckout = isDeletedText(pars_[pit_], pos);
 782
 783                 if (is_struckout && !running_strikeout) {
 784                         running_strikeout = true;
 785                         last_strikeout_x = int(x_);
 786                 }
 787
 788                 bool const highly_editable_inset = pars_[pit_].isInset(pos)
 789                         && isHighlyEditableInset(pars_[pit_].getInset(pos));
 790
 791                 // if we reach the end of a struck out range, paint it
 792                 // we also don't paint across things like tables
 793                 if (running_strikeout && (highly_editable_inset || !is_struckout)) {
 794                         int const middle = yo_ + (row_.baseline() + row_.top_of_text()) / 2;
 795                         pain_.line(last_strikeout_x, middle, int(x_), middle,
 796                                 LColor::strikeout, Painter::line_solid, Painter::line_thin);
 797                         running_strikeout = false;
 798                 }
 799
 800                 if (body_pos > 0 && pos == body_pos - 1) {
 801                         int const lwidth = font_metrics::width(layout->labelsep,
 802                                 getLabelFont());
 803
 804                         x_ += label_hfill_ + lwidth - singleWidth(body_pos - 1);
 805                 }
 806
 807                 if (pars_[pit_].isHfill(pos)) {
 808                         x_ += 1;
 809
 810                         int const y0 = yo_ + row_.baseline();
 811                         int const y1 = y0 - defaultRowHeight() / 2;
 812
 813                         pain_.line(int(x_), y1, int(x_), y0, LColor::added_space);
 814
 815                         if (hfillExpansion(pars_[pit_], row_, pos)) {
 816                                 int const y2 = (y0 + y1) / 2;
 817
 818                                 if (pos >= body_pos) {
 819                                         pain_.line(int(x_), y2, int(x_ + hfill_), y2,
 820                                                   LColor::added_space,
 821                                                   Painter::line_onoffdash);
 822                                         x_ += hfill_;
 823                                 } else {
 824                                         pain_.line(int(x_), y2, int(x_ + label_hfill_), y2,
 825                                                   LColor::added_space,
 826                                                   Painter::line_onoffdash);
 827                                         x_ += label_hfill_;
 828                                 }
 829                                 pain_.line(int(x_), y1, int(x_), y0, LColor::added_space);
 830                         }
 831                         x_ += 2;
 832                         ++vpos;
 833                 } else if (pars_[pit_].isSeparator(pos)) {
 834                         x_ += singleWidth(pos);
 835                         if (pos >= body_pos)
 836                                 x_ += separator_;
 837                         ++vpos;
 838                 } else {
 839                         paintFromPos(vpos);
 840                 }
 841         }
 842
 843         // if we reach the end of a struck out range, paint it
 844         if (running_strikeout) {
 845                 int const middle = yo_ + (row_.baseline() + row_.top_of_text()) / 2;
 846                 pain_.line(last_strikeout_x, middle, int(x_), middle,
 847                         LColor::strikeout, Painter::line_solid, Painter::line_thin);
 848                 running_strikeout = false;
 849         }
 850 }
 851
 852
 853 int paintPars(BufferView const & bv, Painter & pain,
 854               LyXText const & text, par_type pit, par_type end)
 855 {
 856         //lyxerr << "  paintRows: pit: " << &*pit << endl;
 857         ParagraphList & pars = text.paragraphs();
 858
 859         int y = pars[pit].y + text.yo_ - bv.top_y();
 860
 861         for (; pit != end; ++pit) {
 862                 RowList::iterator row = pars[pit].rows.begin();
 863                 RowList::iterator rend = pars[pit].rows.end();
 864
 865                 // We draw full paragraphs to get the (xo, yo) cache of all
 866                 // contained insets right. This is needed for properly working
 867                 // editXY. And maybe not even sufficient.
 868                 // FIXME: Alfredo, please have a look at the coordinate business
 869                 // again.
 870                 for ( ; row != rend; ++row) {
 871                         RowPainter(bv, pain, text, pit, row, y);
 872                         y += row->height();
 873                 }
 874
 875         }
 876         return y;
 877 }
 878
 879 } // namespace anon
 880
 881
 882 void refreshPar(BufferView const & bv, LyXText const & text, par_type pit)
 883 {
 884         static NullPainter nop;
 885         paintPars(bv, nop, text, pit, pit + 1);
 886 }
 887
 888
 889 int paintText(BufferView const & bv)
 890 {
 891         par_type pit, end;
 892         getParsInRange(bv.text()->paragraphs(), bv.top_y(),
 893                        bv.top_y() + bv.workHeight(), pit, end);
 894         //lyxerr << "top_y: " << bv.top_y() << " y: " << pit->y << endl;
 895         return paintPars(bv, bv.painter(), *bv.text(), pit, end);
 896 }
 897
 898
 899 void paintTextInset(LyXText const & text, PainterInfo & pi)
 900 {
 901         paintPars(*pi.base.bv, pi.pain, text, 0, text.paragraphs().size());
 902 }