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