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