src/rowpainter.C

   1 /**
   2  * \file rowpainter.C
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author various
   7  * \author John Levon
   8  *
   9  * Full author contact details are available in file CREDITS.
  10  */
  11
  12 #include <config.h>
  13
  14 #include "rowpainter.h"
  15
  16 #include "buffer.h"
  17 #include "coordcache.h"
  18 #include "cursor.h"
  19 #include "debug.h"
  20 #include "bufferparams.h"
  21 #include "BufferView.h"
  22 #include "encoding.h"
  23 #include "gettext.h"
  24 #include "language.h"
  25 #include "LColor.h"
  26 #include "lyxrc.h"
  27 #include "lyxrow.h"
  28 #include "lyxrow_funcs.h"
  29 #include "metricsinfo.h"
  30 #include "paragraph.h"
  31 #include "paragraph_funcs.h"
  32 #include "ParagraphParameters.h"
  33 #include "vspace.h"
  34
  35 #include "frontends/font_metrics.h"
  36 #include "frontends/nullpainter.h"
  37 #include "frontends/Painter.h"
  38
  39 #include "insets/insettext.h"
  40
  41 #include "support/textutils.h"
  42
  43 using lyx::pos_type;
  44 using lyx::par_type;
  45
  46 using std::endl;
  47 using std::max;
  48 using std::string;
  49
  50
  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, Painter & pain, LyXText const & text,
  60                 par_type pit, RowList::iterator rit, int y);
  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         ParagraphList & pars_;
 101
 102         /// The row to paint
 103         RowList::iterator const rit_;
 104         Row & row_;
 105
 106         /// Row's paragraph
 107         par_type const pit_;
 108         Paragraph const & par_;
 109
 110         // Looks ugly - is
 111         double xo_;
 112         int yo_;
 113         double x_;
 114         int width_;
 115         double separator_;
 116         double hfill_;
 117         double label_hfill_;
 118 };
 119
 120
 121 RowPainter::RowPainter(BufferView const & bv, Painter & pain,
 122         LyXText const & text, par_type pit, RowList::iterator rit, int y)
 123         : bv_(bv), pain_(pain), text_(text), pars_(text.paragraphs()),
 124           rit_(rit), row_(*rit), pit_(pit), par_(text.paragraphs()[pit]),
 125           xo_(text_.xo_), yo_(y), width_(text_.width())
 126 {
 127         //lyxerr << "RowPainter: x: " << x_ << " xo: " << xo << " yo: " << yo
 128         //      << " pit->y: " << pit_->y
 129         //      << " row: " << (par_.size() ? par_.getChar(row_.pos()) : 'X') << endl;
 130
 131         RowMetrics m = text_.computeRowMetrics(pit, row_);
 132         x_ = m.x + xo_;
 133
 134         separator_ = m.separator;
 135         hfill_ = m.hfill;
 136         label_hfill_ = m.label_hfill;
 137
 138         // background has already been cleared.
 139         if (&text_ == bv_.text())
 140                 paintBackground();
 141
 142         // paint the selection background
 143         if (bv_.cursor().selection() && &text_ == bv_.cursor().text())
 144                 paintSelection();
 145
 146         // vertical lines for appendix
 147         paintAppendix();
 148
 149         // environment depth brackets
 150         paintDepthBar();
 151
 152         // changebar
 153         paintChangeBar();
 154
 155         if (row_.pos() == 0)
 156                 paintFirst();
 157
 158         if (row_.endpos() >= par_.size())
 159                 paintLast();
 160
 161         // paint text
 162         paintText();
 163 }
 164
 165
 166 /// "temporary"
 167 LyXFont const RowPainter::getFont(pos_type pos) const
 168 {
 169         return text_.getFont(par_, pos);
 170 }
 171
 172
 173 int RowPainter::singleWidth(lyx::pos_type pos) const
 174 {
 175         return text_.singleWidth(par_, pos);
 176 }
 177
 178
 179 int RowPainter::singleWidth(lyx::pos_type pos, char c) const
 180 {
 181         LyXFont const & font = text_.getFont(par_, pos);
 182         return text_.singleWidth(par_, pos, c, font);
 183 }
 184
 185
 186 LyXFont const RowPainter::getLabelFont() const
 187 {
 188         return text_.getLabelFont(par_);
 189 }
 190
 191
 192 int RowPainter::leftMargin() const
 193 {
 194         return text_.leftMargin(pit_, row_.pos());
 195 }
 196
 197
 198 void RowPainter::paintInset(pos_type const pos)
 199 {
 200         InsetBase const * inset = par_.getInset(pos);
 201         BOOST_ASSERT(inset);
 202         PainterInfo pi(const_cast<BufferView *>(&bv_), pain_);
 203         pi.base.font = getFont(pos);
 204         pi.ltr_pos = (text_.bidi.level(pos) % 2 == 0);
 205         theCoords.insets_.add(inset, int(x_), yo_ + row_.baseline());
 206         inset->drawSelection(pi, int(x_), yo_ + row_.baseline());
 207         inset->draw(pi, int(x_), yo_ + row_.baseline());
 208         x_ += inset->width();
 209 }
 210
 211
 212 void RowPainter::paintHebrewComposeChar(pos_type & vpos)
 213 {
 214         pos_type pos = text_.bidi.vis2log(vpos);
 215
 216         string str;
 217
 218         // first char
 219         char c = par_.getChar(pos);
 220         str += c;
 221         ++vpos;
 222
 223         LyXFont const & font = getFont(pos);
 224         int const width = font_metrics::width(c, font);
 225         int dx = 0;
 226
 227         for (pos_type i = pos - 1; i >= 0; --i) {
 228                 c = par_.getChar(i);
 229                 if (!Encodings::IsComposeChar_hebrew(c)) {
 230                         if (IsPrintableNonspace(c)) {
 231                                 int const width2 = singleWidth(i, c);
 232                                 // dalet / resh
 233                                 dx = (c == 'ø' || c == 'ã')
 234                                         ? width2 - width
 235                                         : (width2 - width) / 2;
 236                         }
 237                         break;
 238                 }
 239         }
 240
 241         // Draw nikud
 242         pain_.text(int(x_) + dx, yo_ + row_.baseline(), str, font);
 243 }
 244
 245
 246 void RowPainter::paintArabicComposeChar(pos_type & vpos)
 247 {
 248         pos_type pos = text_.bidi.vis2log(vpos);
 249         string str;
 250
 251         // first char
 252         char c = par_.getChar(pos);
 253         c = par_.transformChar(c, pos);
 254         str += c;
 255         ++vpos;
 256
 257         LyXFont const & font = getFont(pos);
 258         int const width = font_metrics::width(c, font);
 259         int dx = 0;
 260
 261         for (pos_type i = pos - 1; i >= 0; --i) {
 262                 c = par_.getChar(i);
 263                 if (!Encodings::IsComposeChar_arabic(c)) {
 264                         if (IsPrintableNonspace(c)) {
 265                                 int const width2 = singleWidth(i, c);
 266                                 dx = (width2 - width) / 2;
 267                         }
 268                         break;
 269                 }
 270         }
 271         // Draw nikud
 272         pain_.text(int(x_) + dx, yo_ + row_.baseline(), str, font);
 273 }
 274
 275
 276 void RowPainter::paintChars(pos_type & vpos, bool hebrew, bool arabic)
 277 {
 278         pos_type pos = text_.bidi.vis2log(vpos);
 279         pos_type const end = row_.endpos();
 280         LyXFont orig_font = getFont(pos);
 281
 282         // first character
 283         string str;
 284         str += par_.getChar(pos);
 285         if (arabic) {
 286                 unsigned char c = str[0];
 287                 str[0] = par_.transformChar(c, pos);
 288         }
 289
 290         bool prev_struckout = isDeletedText(par_, pos);
 291         bool prev_newtext = isInsertedText(par_, pos);
 292
 293         // collect as much similar chars as we can
 294         for (++vpos; vpos < end && (pos = text_.bidi.vis2log(vpos)) >= 0; ++vpos) {
 295                 char c = par_.getChar(pos);
 296
 297                 if (!IsPrintableNonspace(c))
 298                         break;
 299
 300                 if (prev_struckout != isDeletedText(par_, pos))
 301                         break;
 302
 303                 if (prev_newtext != isInsertedText(par_, pos))
 304                         break;
 305
 306                 if (arabic && Encodings::IsComposeChar_arabic(c))
 307                         break;
 308
 309                 if (hebrew && Encodings::IsComposeChar_hebrew(c))
 310                         break;
 311
 312                 if (orig_font != getFont(pos))
 313                         break;
 314
 315                 if (arabic)
 316                         c = par_.transformChar(c, pos);
 317
 318                 str += c;
 319         }
 320
 321         if (prev_struckout)
 322                 orig_font.setColor(LColor::strikeout);
 323         else if (prev_newtext)
 324                 orig_font.setColor(LColor::newtext);
 325
 326         // Draw text and set the new x position
 327         //lyxerr << "paint row: yo_ " << yo_ << " baseline: " << row_.baseline()
 328         //      << "\n";
 329         pain_.text(int(x_), yo_ + row_.baseline(), str, orig_font);
 330         x_ += font_metrics::width(str, orig_font);
 331 }
 332
 333
 334 void RowPainter::paintForeignMark(double orig_x, LyXFont const & orig_font)
 335 {
 336         if (!lyxrc.mark_foreign_language)
 337                 return;
 338         if (orig_font.language() == latex_language)
 339                 return;
 340         if (orig_font.language() == bv_.buffer()->params().language)
 341                 return;
 342
 343         int const y = yo_ + row_.baseline() + 1;
 344         pain_.line(int(orig_x), y, int(x_), y, LColor::language);
 345 }
 346
 347
 348 void RowPainter::paintFromPos(pos_type & vpos)
 349 {
 350         pos_type const pos = text_.bidi.vis2log(vpos);
 351
 352         LyXFont const & orig_font = getFont(pos);
 353
 354         double const orig_x = x_;
 355
 356         char const c = par_.getChar(pos);
 357
 358         if (c == Paragraph::META_INSET) {
 359                 paintInset(pos);
 360                 ++vpos;
 361                 paintForeignMark(orig_x, orig_font);
 362                 return;
 363         }
 364
 365         // usual characters, no insets
 366
 367         // special case languages
 368         bool const hebrew = (orig_font.language()->lang() == "hebrew");
 369         bool const arabic =
 370                 orig_font.language()->lang() == "arabic" &&
 371                 (lyxrc.font_norm_type == LyXRC::ISO_8859_6_8 ||
 372                 lyxrc.font_norm_type == LyXRC::ISO_10646_1);
 373
 374         // draw as many chars as we can
 375         if ((!hebrew && !arabic)
 376                 || (hebrew && !Encodings::IsComposeChar_hebrew(c))
 377                 || (arabic && !Encodings::IsComposeChar_arabic(c))) {
 378                 paintChars(vpos, hebrew, arabic);
 379         } else if (hebrew) {
 380                 paintHebrewComposeChar(vpos);
 381         } else if (arabic) {
 382                 paintArabicComposeChar(vpos);
 383         }
 384
 385         paintForeignMark(orig_x, orig_font);
 386 }
 387
 388
 389 void RowPainter::paintBackground()
 390 {
 391         int const x = int(xo_);
 392         int const y = yo_ < 0 ? 0 : yo_;
 393         int const h = yo_ < 0 ? row_.height() + yo_ : row_.height();
 394         pain_.fillRectangle(x, y, width_, h, text_.backgroundColor());
 395 }
 396
 397
 398 void RowPainter::paintSelection()
 399 {
 400         bool const is_rtl = text_.isRTL(par_);
 401
 402         // the current selection
 403         LCursor const & cur = bv_.cursor();
 404         int const starty = text_.cursorY(cur.selBegin());
 405         int const endy = text_.cursorY(cur.selEnd());
 406         par_type startpit = cur.selBegin().par();
 407         par_type endpit = cur.selEnd().par();
 408         RowList::iterator startrow = pars_[startpit].getRow(cur.selBegin().pos());
 409         RowList::iterator endrow = pars_[endpit].getRow(cur.selEnd().pos());
 410         int const h = row_.height();
 411
 412         int const row_y = text_.yo_ + par_.y + row_.y_offset();
 413
 414         bool const sel_starts_here = startpit == pit_ && startrow == rit_;
 415         bool const sel_ends_here   = endpit == pit_ && endrow == rit_;
 416         bool const sel_on_one_row  = sel_starts_here && sel_ends_here;
 417
 418         if (text_.bidi.same_direction()) {
 419                 if (sel_on_one_row) {
 420                         int const startx = text_.cursorX(cur.selBegin());
 421                         int const endx = text_.cursorX(cur.selEnd());
 422                         int const x1 = is_rtl ? endx : startx;
 423                         int const x2 = is_rtl ? startx : endx;
 424                         pain_.fillRectangle(x1, yo_, x2 - x1, h, LColor::selection);
 425                 } else if (sel_starts_here) {
 426                         int const startx = text_.cursorX(cur.selBegin());
 427                         int const x1 = is_rtl ? int(xo_) : startx;
 428                         int const x2 = is_rtl ? startx : int(xo_) + width_;
 429                         pain_.fillRectangle(x1, yo_, x2 - x1, h, LColor::selection);
 430                 } else if (sel_ends_here) {
 431                         int const endx = text_.cursorX(cur.selEnd());
 432                         int const x1 = is_rtl ? endx : int(xo_);
 433                         int const x2 = is_rtl ? int(xo_) + width_ : endx;
 434                         pain_.fillRectangle(x1, yo_, x2 - x1, 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 = par_.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 = par_.layout();
 455                         LyXFont const lfont = getLabelFont();
 456
 457                         tmpx += label_hfill_ + font_metrics::width(layout->labelsep, lfont);
 458
 459                         if (par_.isLineSeparator(body_pos - 1))
 460                                 tmpx -= singleWidth(body_pos - 1);
 461                 }
 462
 463                 tmpx += singleWidth(pos);
 464
 465                 if (hfillExpansion(par_, row_, pos)) {
 466                         if (pos >= body_pos)
 467                                 tmpx += hfill_;
 468                         else
 469                                 tmpx += label_hfill_;
 470                 } else {
 471                         if (par_.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 || !par_.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 (!par_.params().appendix())
 512                 return;
 513
 514         int y = yo_;
 515
 516         if (par_.params().startOfAppendix())
 517                 y += 2 * defaultRowHeight();
 518
 519         pain_.line(1, y, 1, yo_ + row_.height(), LColor::appendix);
 520         pain_.line(width_ - 2, y, width_ - 2, yo_ + row_.height(), LColor::appendix);
 521 }
 522
 523
 524 void RowPainter::paintDepthBar()
 525 {
 526         Paragraph::depth_type const depth = par_.getDepth();
 527
 528         if (depth <= 0)
 529                 return;
 530
 531         Paragraph::depth_type prev_depth = 0;
 532         if (!text_.isFirstRow(pit_, row_)) {
 533                 par_type pit2 = pit_;
 534                 if (row_.pos() == 0)
 535                         --pit2;
 536                 prev_depth = pars_[pit2].getDepth();
 537         }
 538
 539         Paragraph::depth_type next_depth = 0;
 540         if (!text_.isLastRow(pit_, row_)) {
 541                 par_type pit2 = pit_;
 542                 if (row_.endpos() >= pars_[pit2].size())
 543                         ++pit2;
 544                 next_depth = pars_[pit2].getDepth();
 545         }
 546
 547         for (Paragraph::depth_type i = 1; i <= depth; ++i) {
 548                 int const w = nestMargin() / 5;
 549                 int x = int(xo_) + w * i;
 550                 // only consider the changebar space if we're drawing outermost text
 551                 if (text_.isMainText())
 552                         x += changebarMargin();
 553
 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 = par_.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 = par_.layout();
 603
 604         if (buffer.params().paragraph_separation == BufferParams::PARSEP_SKIP) {
 605                 if (pit_ != 0) {
 606                         if (layout->latextype == LATEX_PARAGRAPH
 607                                 && !par_.getDepth()) {
 608                                 y_top += buffer.params().getDefSkip().inPixels(bv_);
 609                         } else {
 610                                 LyXLayout_ptr const & playout = pars_[pit_ - 1].layout();
 611                                 if (playout->latextype == LATEX_PARAGRAPH
 612                                         && !pars_[pit_ - 1].getDepth()) {
 613                                         // is it right to use defskip here, too? (AS)
 614                                         y_top += buffer.params().getDefSkip().inPixels(bv_);
 615                                 }
 616                         }
 617                 }
 618         }
 619
 620         bool const is_rtl = text_.isRTL(par_);
 621         bool const is_seq = isFirstInSequence(pit_, text_.paragraphs());
 622         //lyxerr << "paintFirst: " << par_.id() << " is_seq: " << is_seq << std::endl;
 623
 624         // should we print a label?
 625         if (layout->labeltype >= LABEL_STATIC
 626             && (layout->labeltype != LABEL_STATIC
 627                       || layout->latextype != LATEX_ENVIRONMENT
 628                       || is_seq)) {
 629
 630                 LyXFont font = getLabelFont();
 631                 if (!par_.getLabelstring().empty()) {
 632                         double x = x_;
 633                         string const str = par_.getLabelstring();
 634
 635                         // this is special code for the chapter layout. This is
 636                         // printed in an extra row and has a pagebreak at
 637                         // the top.
 638                         if (layout->counter == "chapter") {
 639                                 if (buffer.params().secnumdepth >= 0) {
 640                                         float spacing_val = 1.0;
 641                                         if (!parparams.spacing().isDefault()) {
 642                                                 spacing_val = parparams.spacing().getValue();
 643                                         } else {
 644                                                 spacing_val = buffer.params().spacing().getValue();
 645                                         }
 646
 647                                         int const maxdesc =
 648                                                 int(font_metrics::maxDescent(font) * layout->spacing.getValue() * spacing_val)
 649                                                 + int(layout->parsep) * defaultRowHeight();
 650
 651                                         if (is_rtl) {
 652                                                 x = width_ - leftMargin() -
 653                                                         font_metrics::width(str, font);
 654                                         }
 655
 656                                         pain_.text(int(x),
 657                                                 yo_ + row_.baseline() -
 658                                                 row_.ascent_of_text() - maxdesc,
 659                                                 str, font);
 660                                 }
 661                         } else {
 662                                 if (is_rtl) {
 663                                         x = width_ - leftMargin()
 664                                                 + font_metrics::width(layout->labelsep, font);
 665                                 } else {
 666                                         x = x_ - font_metrics::width(layout->labelsep, font)
 667                                                 - font_metrics::width(str, font);
 668                                 }
 669
 670                                 pain_.text(int(x), yo_ + row_.baseline(), str, font);
 671                         }
 672                 }
 673
 674         // the labels at the top of an environment.
 675         // More or less for bibliography
 676         } else if (is_seq &&
 677                 (layout->labeltype == LABEL_TOP_ENVIRONMENT ||
 678                 layout->labeltype == LABEL_BIBLIO ||
 679                 layout->labeltype == LABEL_CENTERED_TOP_ENVIRONMENT)) {
 680                 LyXFont font = getLabelFont();
 681                 if (!par_.getLabelstring().empty()) {
 682                         string const str = par_.getLabelstring();
 683                         float spacing_val = 1.0;
 684                         if (!parparams.spacing().isDefault()) {
 685                                 spacing_val = parparams.spacing().getValue();
 686                         } else {
 687                                 spacing_val = buffer.params().spacing().getValue();
 688                         }
 689
 690                         int maxdesc =
 691                                 int(font_metrics::maxDescent(font) * layout->spacing.getValue() * spacing_val
 692                                 + (layout->labelbottomsep * defaultRowHeight()));
 693
 694                         double x = x_;
 695                         if (layout->labeltype == LABEL_CENTERED_TOP_ENVIRONMENT) {
 696                                 x = ((is_rtl ? leftMargin() : x_)
 697                                          + width_ - text_.rightMargin(par_)) / 2;
 698                                 x -= font_metrics::width(str, font) / 2;
 699                         } else if (is_rtl) {
 700                                 x = width_ - leftMargin() -
 701                                         font_metrics::width(str, font);
 702                         }
 703                         pain_.text(int(x),
 704                             yo_ + row_.baseline() - row_.ascent_of_text() - maxdesc,
 705                                   str, font);
 706                 }
 707         }
 708 }
 709
 710
 711 void RowPainter::paintLast()
 712 {
 713         bool const is_rtl = text_.isRTL(par_);
 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 ? nestMargin() + changebarMargin() : width_ - size;
 724
 725                 if (width_ - int(row_.width()) <= size)
 726                         x += (size - width_ + row_.width() + 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 = par_.layout()->endlabelstring();
 738                 double const x = is_rtl ?
 739                         x_ - font_metrics::width(str, font)
 740                         : - text_.rightMargin(par_) - row_.width();
 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 = par_.beginOfBody();
 755         if (body_pos > 0 &&
 756                 (body_pos > end || !par_.isLineSeparator(body_pos - 1))) {
 757                 body_pos = 0;
 758         }
 759
 760         LyXLayout_ptr const & layout = par_.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 const pos = text_.bidi.vis2log(vpos);
 771
 772                 if (pos >= par_.size()) {
 773                         ++vpos;
 774                         continue;
 775                 }
 776
 777                 const int width_pos = singleWidth(pos);
 778                 if (x_ + width_pos < 0) {
 779                         x_ += width_pos;
 780                         ++vpos;
 781                         continue;
 782                 }
 783
 784                 is_struckout = isDeletedText(par_, pos);
 785
 786                 if (is_struckout && !running_strikeout) {
 787                         running_strikeout = true;
 788                         last_strikeout_x = int(x_);
 789                 }
 790
 791                 bool const highly_editable_inset = par_.isInset(pos)
 792                         && isHighlyEditableInset(par_.getInset(pos));
 793
 794                 // if we reach the end of a struck out range, paint it
 795                 // we also don't paint across things like tables
 796                 if (running_strikeout && (highly_editable_inset || !is_struckout)) {
 797                         int const middle = yo_ + (row_.baseline() + row_.top_of_text()) / 2;
 798                         pain_.line(last_strikeout_x, middle, int(x_), middle,
 799                                 LColor::strikeout, Painter::line_solid, Painter::line_thin);
 800                         running_strikeout = false;
 801                 }
 802
 803                 if (body_pos > 0 && pos == body_pos - 1) {
 804                         int const lwidth = font_metrics::width(layout->labelsep,
 805                                 getLabelFont());
 806
 807                         x_ += label_hfill_ + lwidth - width_pos;
 808                 }
 809
 810                 if (par_.isHfill(pos)) {
 811                         x_ += 1;
 812
 813                         int const y0 = yo_ + row_.baseline();
 814                         int const y1 = y0 - defaultRowHeight() / 2;
 815
 816                         pain_.line(int(x_), y1, int(x_), y0, LColor::added_space);
 817
 818                         if (hfillExpansion(par_, row_, pos)) {
 819                                 int const y2 = (y0 + y1) / 2;
 820
 821                                 if (pos >= body_pos) {
 822                                         pain_.line(int(x_), y2, int(x_ + hfill_), y2,
 823                                                   LColor::added_space,
 824                                                   Painter::line_onoffdash);
 825                                         x_ += hfill_;
 826                                 } else {
 827                                         pain_.line(int(x_), y2, int(x_ + label_hfill_), y2,
 828                                                   LColor::added_space,
 829                                                   Painter::line_onoffdash);
 830                                         x_ += label_hfill_;
 831                                 }
 832                                 pain_.line(int(x_), y1, int(x_), y0, LColor::added_space);
 833                         }
 834                         x_ += 2;
 835                         ++vpos;
 836                 } else if (par_.isSeparator(pos)) {
 837                         x_ += width_pos;
 838                         if (pos >= body_pos)
 839                                 x_ += separator_;
 840                         ++vpos;
 841                 } else {
 842                         paintFromPos(vpos);
 843                 }
 844         }
 845
 846         // if we reach the end of a struck out range, paint it
 847         if (running_strikeout) {
 848                 int const middle = yo_ + (row_.baseline() + row_.top_of_text()) / 2;
 849                 pain_.line(last_strikeout_x, middle, int(x_), middle,
 850                         LColor::strikeout, Painter::line_solid, Painter::line_thin);
 851                 running_strikeout = false;
 852         }
 853 }
 854
 855
 856 int paintPars(BufferView const & bv, Painter & pain,
 857               LyXText const & text, par_type pit, par_type end)
 858 {
 859         //lyxerr << "  paintRows: pit: " << &*pit << endl;
 860         ParagraphList & pars = text.paragraphs();
 861
 862         int y = pars[pit].y + text.yo_ - bv.top_y();
 863
 864         for (; pit != end; ++pit) {
 865                 RowList::iterator row = pars[pit].rows.begin();
 866                 RowList::iterator rend = pars[pit].rows.end();
 867
 868                 // We draw full paragraphs to get the (xo, yo) cache of all
 869                 // contained insets right. This is needed for properly working
 870                 // editXY. And maybe not even sufficient.
 871                 // FIXME: Alfredo, please have a look at the coordinate business
 872                 // again.
 873                 for ( ; row != rend; ++row) {
 874                         RowPainter(bv, pain, text, pit, row, y);
 875                         y += row->height();
 876                 }
 877
 878         }
 879         return y;
 880 }
 881
 882 } // namespace anon
 883
 884
 885 void refreshPar(BufferView const & bv, LyXText const & text, par_type pit)
 886 {
 887         static NullPainter nop;
 888         paintPars(bv, nop, text, pit, pit + 1);
 889 }
 890
 891
 892 int paintText(BufferView const & bv)
 893 {
 894         par_type pit, end;
 895         getParsInRange(bv.text()->paragraphs(), bv.top_y(),
 896                        bv.top_y() + bv.workHeight(), pit, end);
 897         //lyxerr << "top_y: " << bv.top_y() << " y: " << pit->y << endl;
 898         return paintPars(bv, bv.painter(), *bv.text(), pit, end);
 899 }
 900
 901
 902 void paintTextInset(LyXText const & text, PainterInfo & pi)
 903 {
 904         paintPars(*pi.base.bv, pi.pain, text, 0, text.paragraphs().size());
 905 }