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