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::pit_type;
  45
  46 using std::endl;
  47 using std::max;
  48 using std::min;
  49 using std::string;
  50
  51
  52 namespace {
  53
  54 /**
  55  * A class used for painting an individual row of text.
  56  */
  57 class RowPainter {
  58 public:
  59         /// initialise and run painter
  60         RowPainter(PainterInfo & pi, LyXText const & text,
  61                 pit_type pit, Row const & row, int x, int y);
  62
  63         // paint various parts
  64         void paintAppendix();
  65         void paintDepthBar();
  66         void paintChangeBar();
  67         void paintFirst();
  68         void paintLast();
  69         void paintText();
  70
  71 private:
  72         void paintForeignMark(double orig_x, LyXFont const & orig_font);
  73         void paintHebrewComposeChar(lyx::pos_type & vpos);
  74         void paintArabicComposeChar(lyx::pos_type & vpos);
  75         void paintChars(lyx::pos_type & vpos, bool hebrew, bool arabic);
  76         int paintAppendixStart(int y);
  77         void paintFromPos(lyx::pos_type & vpos);
  78         void paintInset(lyx::pos_type const pos);
  79
  80         /// return left margin
  81         int leftMargin() const;
  82
  83         /// return the font at the given pos
  84         LyXFont const getFont(lyx::pos_type pos) const;
  85
  86         /// return the label font for this row
  87         LyXFont const getLabelFont() const;
  88
  89         /// return pixel width for the given pos
  90         int singleWidth(lyx::pos_type pos) const;
  91         int singleWidth(lyx::pos_type pos, char c) const;
  92
  93         /// bufferview to paint on
  94         BufferView const & bv_;
  95
  96         /// Painter to use
  97         Painter & pain_;
  98
  99         /// LyXText for the row
 100         LyXText const & text_;
 101         ParagraphList & pars_;
 102
 103         /// The row to paint
 104         Row const & row_;
 105
 106         /// Row's paragraph
 107         pit_type const pit_;
 108         Paragraph const & par_;
 109
 110         // Looks ugly - is
 111         double const xo_;
 112         int const yo_;    // current baseline
 113         double x_;
 114         int width_;
 115         double separator_;
 116         double hfill_;
 117         double label_hfill_;
 118
 119         // Hack to get 1.4cvs working
 120         LyXFont font_;
 121 };
 122
 123
 124 RowPainter::RowPainter(PainterInfo & pi,
 125         LyXText const & text, pit_type pit, Row const & row, int x, int y)
 126         : bv_(*pi.base.bv), pain_(pi.pain), text_(text), pars_(text.paragraphs()),
 127           row_(row), pit_(pit), par_(text.paragraphs()[pit]),
 128           xo_(x), yo_(y), width_(text_.width()), font_(pi.base.font)
 129 {
 130         RowMetrics m = text_.computeRowMetrics(pit, row_);
 131         x_ = m.x + xo_;
 132
 133         //lyxerr << "RowPainter: x: " << x_ << " xo: " << xo_ << " yo: " << yo_ << endl;
 134         //row_.dump();
 135
 136         separator_ = m.separator;
 137         hfill_ = m.hfill;
 138         label_hfill_ = m.label_hfill;
 139
 140         BOOST_ASSERT(pit >= 0);
 141         BOOST_ASSERT(pit < int(text.paragraphs().size()));
 142 }
 143
 144
 145 /// "temporary"
 146 LyXFont const RowPainter::getFont(pos_type pos) const
 147 {
 148         LyXFont lf(font_);
 149         lf.reduce(LyXFont(LyXFont::ALL_SANE));
 150         lf.realize(text_.getFont(par_, pos));
 151         return lf;
 152 }
 153
 154
 155 int RowPainter::singleWidth(lyx::pos_type pos) const
 156 {
 157         return text_.singleWidth(par_, pos);
 158 }
 159
 160
 161 int RowPainter::singleWidth(lyx::pos_type pos, char c) const
 162 {
 163         LyXFont const & font = text_.getFont(par_, pos);
 164         return text_.singleWidth(par_, pos, c, font);
 165 }
 166
 167
 168 LyXFont const RowPainter::getLabelFont() const
 169 {
 170         return text_.getLabelFont(par_);
 171 }
 172
 173
 174 int RowPainter::leftMargin() const
 175 {
 176         return text_.leftMargin(pit_, row_.pos());
 177 }
 178
 179
 180 void RowPainter::paintInset(pos_type const pos)
 181 {
 182         InsetBase const * inset = par_.getInset(pos);
 183         BOOST_ASSERT(inset);
 184         PainterInfo pi(const_cast<BufferView *>(&bv_), pain_);
 185         pi.base.font = getFont(pos);
 186         pi.ltr_pos = (text_.bidi.level(pos) % 2 == 0);
 187         theCoords.insets().add(inset, int(x_), yo_);
 188         inset->drawSelection(pi, int(x_), yo_);
 189         inset->draw(pi, int(x_), yo_);
 190         x_ += inset->width();
 191 }
 192
 193
 194 void RowPainter::paintHebrewComposeChar(pos_type & vpos)
 195 {
 196         pos_type pos = text_.bidi.vis2log(vpos);
 197
 198         string str;
 199
 200         // first char
 201         char c = par_.getChar(pos);
 202         str += c;
 203         ++vpos;
 204
 205         LyXFont const & font = getFont(pos);
 206         int const width = font_metrics::width(c, font);
 207         int dx = 0;
 208
 209         for (pos_type i = pos - 1; i >= 0; --i) {
 210                 c = par_.getChar(i);
 211                 if (!Encodings::IsComposeChar_hebrew(c)) {
 212                         if (IsPrintableNonspace(c)) {
 213                                 int const width2 = singleWidth(i, c);
 214                                 // dalet / resh
 215                                 dx = (c == 'ø' || c == 'ã')
 216                                         ? width2 - width
 217                                         : (width2 - width) / 2;
 218                         }
 219                         break;
 220                 }
 221         }
 222
 223         // Draw nikud
 224         pain_.text(int(x_) + dx, yo_, str, font);
 225 }
 226
 227
 228 void RowPainter::paintArabicComposeChar(pos_type & vpos)
 229 {
 230         pos_type pos = text_.bidi.vis2log(vpos);
 231         string str;
 232
 233         // first char
 234         char c = par_.getChar(pos);
 235         c = par_.transformChar(c, pos);
 236         str += c;
 237         ++vpos;
 238
 239         LyXFont const & font = getFont(pos);
 240         int const width = font_metrics::width(c, font);
 241         int dx = 0;
 242
 243         for (pos_type i = pos - 1; i >= 0; --i) {
 244                 c = par_.getChar(i);
 245                 if (!Encodings::IsComposeChar_arabic(c)) {
 246                         if (IsPrintableNonspace(c)) {
 247                                 int const width2 = singleWidth(i, c);
 248                                 dx = (width2 - width) / 2;
 249                         }
 250                         break;
 251                 }
 252         }
 253         // Draw nikud
 254         pain_.text(int(x_) + dx, yo_, str, font);
 255 }
 256
 257
 258 void RowPainter::paintChars(pos_type & vpos, bool hebrew, bool arabic)
 259 {
 260         pos_type pos = text_.bidi.vis2log(vpos);
 261         pos_type const end = row_.endpos();
 262         LyXFont orig_font = getFont(pos);
 263
 264         // first character
 265         string str;
 266         str += par_.getChar(pos);
 267         if (arabic) {
 268                 unsigned char c = str[0];
 269                 str[0] = par_.transformChar(c, pos);
 270         }
 271
 272         bool prev_struckout = isDeletedText(par_, pos);
 273         bool prev_newtext = isInsertedText(par_, pos);
 274
 275         // collect as much similar chars as we can
 276         for (++vpos; vpos < end && (pos = text_.bidi.vis2log(vpos)) >= 0; ++vpos) {
 277                 char c = par_.getChar(pos);
 278
 279                 if (!IsPrintableNonspace(c))
 280                         break;
 281
 282                 if (prev_struckout != isDeletedText(par_, pos))
 283                         break;
 284
 285                 if (prev_newtext != isInsertedText(par_, pos))
 286                         break;
 287
 288                 if (arabic && Encodings::IsComposeChar_arabic(c))
 289                         break;
 290
 291                 if (hebrew && Encodings::IsComposeChar_hebrew(c))
 292                         break;
 293
 294                 if (orig_font != getFont(pos))
 295                         break;
 296
 297                 if (arabic)
 298                         c = par_.transformChar(c, pos);
 299
 300                 str += c;
 301         }
 302
 303         if (prev_struckout)
 304                 orig_font.setColor(LColor::strikeout);
 305         else if (prev_newtext)
 306                 orig_font.setColor(LColor::newtext);
 307
 308         // Draw text and set the new x position
 309         //lyxerr << "paint row: yo_ " << yo_ << "\n";
 310         pain_.text(int(x_), yo_, str, orig_font);
 311         x_ += font_metrics::width(str, orig_font);
 312 }
 313
 314
 315 void RowPainter::paintForeignMark(double orig_x, LyXFont const & orig_font)
 316 {
 317         if (!lyxrc.mark_foreign_language)
 318                 return;
 319         if (orig_font.language() == latex_language)
 320                 return;
 321         if (orig_font.language() == bv_.buffer()->params().language)
 322                 return;
 323
 324         int const y = yo_ + 1;
 325         pain_.line(int(orig_x), y, int(x_), y, LColor::language);
 326 }
 327
 328
 329 void RowPainter::paintFromPos(pos_type & vpos)
 330 {
 331         pos_type const pos = text_.bidi.vis2log(vpos);
 332
 333         LyXFont const & orig_font = getFont(pos);
 334
 335         double const orig_x = x_;
 336
 337         char const c = par_.getChar(pos);
 338
 339         if (c == Paragraph::META_INSET) {
 340                 paintInset(pos);
 341                 ++vpos;
 342                 paintForeignMark(orig_x, orig_font);
 343                 return;
 344         }
 345
 346         // usual characters, no insets
 347
 348         // special case languages
 349         bool const hebrew = (orig_font.language()->lang() == "hebrew");
 350         bool const arabic =
 351                 orig_font.language()->lang() == "arabic" &&
 352                 (lyxrc.font_norm_type == LyXRC::ISO_8859_6_8 ||
 353                 lyxrc.font_norm_type == LyXRC::ISO_10646_1);
 354
 355         // draw as many chars as we can
 356         if ((!hebrew && !arabic)
 357                 || (hebrew && !Encodings::IsComposeChar_hebrew(c))
 358                 || (arabic && !Encodings::IsComposeChar_arabic(c))) {
 359                 paintChars(vpos, hebrew, arabic);
 360         } else if (hebrew) {
 361                 paintHebrewComposeChar(vpos);
 362         } else if (arabic) {
 363                 paintArabicComposeChar(vpos);
 364         }
 365
 366         paintForeignMark(orig_x, orig_font);
 367 }
 368
 369
 370 void RowPainter::paintChangeBar()
 371 {
 372         pos_type const start = row_.pos();
 373         pos_type const end = row_.endpos();
 374
 375         if (start == end || !par_.isChanged(start, end - 1))
 376                 return;
 377
 378         int const height = text_.isLastRow(pit_, row_)
 379                 ? row_.ascent()
 380                 : row_.height();
 381
 382         pain_.fillRectangle(4, yo_ - row_.ascent(), 5, height, LColor::changebar);
 383 }
 384
 385
 386 void RowPainter::paintAppendix()
 387 {
 388         if (!par_.params().appendix())
 389                 return;
 390
 391         int y = yo_ - row_.ascent();
 392
 393         if (par_.params().startOfAppendix())
 394                 y += 2 * defaultRowHeight();
 395
 396         pain_.line(1, y, 1, yo_ + row_.height(), LColor::appendix);
 397         pain_.line(width_ - 2, y, width_ - 2, yo_ + row_.height(), LColor::appendix);
 398 }
 399
 400
 401 void RowPainter::paintDepthBar()
 402 {
 403         Paragraph::depth_type const depth = par_.getDepth();
 404
 405         if (depth <= 0)
 406                 return;
 407
 408         Paragraph::depth_type prev_depth = 0;
 409         if (!text_.isFirstRow(pit_, row_)) {
 410                 pit_type pit2 = pit_;
 411                 if (row_.pos() == 0)
 412                         --pit2;
 413                 prev_depth = pars_[pit2].getDepth();
 414         }
 415
 416         Paragraph::depth_type next_depth = 0;
 417         if (!text_.isLastRow(pit_, row_)) {
 418                 pit_type pit2 = pit_;
 419                 if (row_.endpos() >= pars_[pit2].size())
 420                         ++pit2;
 421                 next_depth = pars_[pit2].getDepth();
 422         }
 423
 424         for (Paragraph::depth_type i = 1; i <= depth; ++i) {
 425                 int const w = nestMargin() / 5;
 426                 int x = int(xo_) + w * i;
 427                 // only consider the changebar space if we're drawing outermost text
 428                 if (text_.isMainText())
 429                         x += changebarMargin();
 430
 431                 int const starty = yo_ - row_.ascent();
 432                 int const h =  row_.height() - 1 - (i - next_depth - 1) * 3;
 433
 434                 pain_.line(x, starty, x, starty + h, LColor::depthbar);
 435
 436                 if (i > prev_depth)
 437                         pain_.fillRectangle(x, starty, w, 2, LColor::depthbar);
 438                 if (i > next_depth)
 439                         pain_.fillRectangle(x, starty + h, w, 2, LColor::depthbar);
 440         }
 441 }
 442
 443
 444 int RowPainter::paintAppendixStart(int y)
 445 {
 446         LyXFont pb_font;
 447         pb_font.setColor(LColor::appendix);
 448         pb_font.decSize();
 449
 450         string const label = _("Appendix");
 451         int w = 0;
 452         int a = 0;
 453         int d = 0;
 454         font_metrics::rectText(label, pb_font, w, a, d);
 455
 456         int const text_start = int(xo_ + (width_ - w) / 2);
 457         int const text_end = text_start + w;
 458
 459         pain_.rectText(text_start, y + d, label, pb_font, LColor::none, LColor::none);
 460
 461         pain_.line(int(xo_ + 1), y, text_start, y, LColor::appendix);
 462         pain_.line(text_end, y, int(xo_ + width_ - 2), y, LColor::appendix);
 463
 464         return 3 * defaultRowHeight();
 465 }
 466
 467
 468 void RowPainter::paintFirst()
 469 {
 470         ParagraphParameters const & parparams = par_.params();
 471
 472         int y_top = 0;
 473
 474         // start of appendix?
 475         if (parparams.startOfAppendix())
 476                 y_top += paintAppendixStart(yo_ + y_top + 2 * defaultRowHeight());
 477
 478         Buffer const & buffer = *bv_.buffer();
 479
 480         LyXLayout_ptr const & layout = par_.layout();
 481
 482         if (buffer.params().paragraph_separation == BufferParams::PARSEP_SKIP) {
 483                 if (pit_ != 0) {
 484                         if (layout->latextype == LATEX_PARAGRAPH
 485                                 && !par_.getDepth()) {
 486                                 y_top += buffer.params().getDefSkip().inPixels(bv_);
 487                         } else {
 488                                 LyXLayout_ptr const & playout = pars_[pit_ - 1].layout();
 489                                 if (playout->latextype == LATEX_PARAGRAPH
 490                                         && !pars_[pit_ - 1].getDepth()) {
 491                                         // is it right to use defskip here, too? (AS)
 492                                         y_top += buffer.params().getDefSkip().inPixels(bv_);
 493                                 }
 494                         }
 495                 }
 496         }
 497
 498         bool const is_rtl = text_.isRTL(par_);
 499         bool const is_seq = isFirstInSequence(pit_, text_.paragraphs());
 500         //lyxerr << "paintFirst: " << par_.id() << " is_seq: " << is_seq << std::endl;
 501
 502         // should we print a label?
 503         if (layout->labeltype >= LABEL_STATIC
 504             && (layout->labeltype != LABEL_STATIC
 505                       || layout->latextype != LATEX_ENVIRONMENT
 506                       || is_seq)) {
 507
 508                 LyXFont font = getLabelFont();
 509                 if (!par_.getLabelstring().empty()) {
 510                         double x = x_;
 511                         string const str = par_.getLabelstring();
 512
 513                         // this is special code for the chapter layout. This is
 514                         // printed in an extra row and has a pagebreak at
 515                         // the top.
 516                         if (layout->counter == "chapter") {
 517                                 if (buffer.params().secnumdepth >= 0) {
 518                                         double spacing_val = 1.0;
 519                                         if (!parparams.spacing().isDefault()) {
 520                                                 spacing_val = parparams.spacing().getValue();
 521                                         } else {
 522                                                 spacing_val = buffer.params().spacing().getValue();
 523                                         }
 524 #ifdef WITH_WARNINGS
 525 #warning Look is this correct?
 526 #endif
 527                                         int const labeladdon = int(font_metrics::maxHeight(font) * layout->spacing.getValue() * spacing_val);
 528
 529                                         int const maxdesc = int(font_metrics::maxDescent(font) * layout->spacing.getValue() * spacing_val)
 530                                                 + int(layout->parsep) * defaultRowHeight();
 531
 532                                         if (is_rtl) {
 533                                                 x = width_ - leftMargin() -
 534                                                         font_metrics::width(str, font);
 535                                         }
 536
 537                                         pain_.text(int(x), yo_ - maxdesc - labeladdon, str, font);
 538                                 }
 539                         } else {
 540                                 if (is_rtl) {
 541                                         x = width_ - leftMargin()
 542                                                 + font_metrics::width(layout->labelsep, font);
 543                                 } else {
 544                                         x = x_ - font_metrics::width(layout->labelsep, font)
 545                                                 - font_metrics::width(str, font);
 546                                 }
 547
 548                                 pain_.text(int(x), yo_, str, font);
 549                         }
 550                 }
 551
 552         // the labels at the top of an environment.
 553         // More or less for bibliography
 554         } else if (is_seq &&
 555                 (layout->labeltype == LABEL_TOP_ENVIRONMENT ||
 556                 layout->labeltype == LABEL_BIBLIO ||
 557                 layout->labeltype == LABEL_CENTERED_TOP_ENVIRONMENT)) {
 558                 LyXFont font = getLabelFont();
 559                 if (!par_.getLabelstring().empty()) {
 560                         string const str = par_.getLabelstring();
 561                         double spacing_val = 1.0;
 562                         if (!parparams.spacing().isDefault()) {
 563                                 spacing_val = parparams.spacing().getValue();
 564                         } else {
 565                                 spacing_val = buffer.params().spacing().getValue();
 566                         }
 567
 568                         int maxdesc =
 569                                 int(font_metrics::maxDescent(font) * layout->spacing.getValue() * spacing_val
 570                                 + (layout->labelbottomsep * defaultRowHeight()));
 571
 572                         double x = x_;
 573                         if (layout->labeltype == LABEL_CENTERED_TOP_ENVIRONMENT) {
 574                                 x = ((is_rtl ? leftMargin() : x_)
 575                                          + width_ - text_.rightMargin(par_)) / 2;
 576                                 x -= font_metrics::width(str, font) / 2;
 577                         } else if (is_rtl) {
 578                                 x = width_ - leftMargin() -
 579                                         font_metrics::width(str, font);
 580                         }
 581                         pain_.text(int(x), yo_ - maxdesc, str, font);
 582                 }
 583         }
 584 }
 585
 586
 587 void RowPainter::paintLast()
 588 {
 589         bool const is_rtl = text_.isRTL(par_);
 590         int const endlabel = getEndLabel(pit_, text_.paragraphs());
 591
 592         // draw an endlabel
 593         switch (endlabel) {
 594         case END_LABEL_BOX:
 595         case END_LABEL_FILLED_BOX: {
 596                 LyXFont const font = getLabelFont();
 597                 int const size = int(0.75 * font_metrics::maxAscent(font));
 598                 int const y = yo_ - size;
 599                 int x = is_rtl ? nestMargin() + changebarMargin() : width_ - size;
 600
 601                 if (width_ - int(row_.width()) <= size)
 602                         x += (size - width_ + row_.width() + 1) * (is_rtl ? -1 : 1);
 603
 604                 if (endlabel == END_LABEL_BOX)
 605                         pain_.rectangle(x, y, size, size, LColor::eolmarker);
 606                 else
 607                         pain_.fillRectangle(x, y, size, size, LColor::eolmarker);
 608                 break;
 609         }
 610
 611         case END_LABEL_STATIC: {
 612                 LyXFont font = getLabelFont();
 613                 string const & str = par_.layout()->endlabelstring();
 614                 double const x = is_rtl ?
 615                         x_ - font_metrics::width(str, font)
 616                         : - text_.rightMargin(par_) - row_.width();
 617                 pain_.text(int(x), yo_, str, font);
 618                 break;
 619         }
 620
 621         case END_LABEL_NO_LABEL:
 622                 break;
 623         }
 624 }
 625
 626
 627 void RowPainter::paintText()
 628 {
 629         pos_type const end = row_.endpos();
 630         pos_type body_pos = par_.beginOfBody();
 631         if (body_pos > 0 &&
 632                 (body_pos > end || !par_.isLineSeparator(body_pos - 1))) {
 633                 body_pos = 0;
 634         }
 635
 636         LyXLayout_ptr const & layout = par_.layout();
 637
 638         bool running_strikeout = false;
 639         bool is_struckout = false;
 640         int last_strikeout_x = 0;
 641
 642         for (pos_type vpos = row_.pos(); vpos < end; ) {
 643                 if (x_ > bv_.workWidth())
 644                         break;
 645
 646                 pos_type const pos = text_.bidi.vis2log(vpos);
 647
 648                 if (pos >= par_.size()) {
 649                         ++vpos;
 650                         continue;
 651                 }
 652
 653                 const int width_pos = singleWidth(pos);
 654                 if (x_ + width_pos < 0) {
 655                         x_ += width_pos;
 656                         ++vpos;
 657                         continue;
 658                 }
 659
 660                 is_struckout = isDeletedText(par_, pos);
 661
 662                 if (is_struckout && !running_strikeout) {
 663                         running_strikeout = true;
 664                         last_strikeout_x = int(x_);
 665                 }
 666
 667                 bool const highly_editable_inset = par_.isInset(pos)
 668                         && isHighlyEditableInset(par_.getInset(pos));
 669
 670                 // if we reach the end of a struck out range, paint it
 671                 // we also don't paint across things like tables
 672                 if (running_strikeout && (highly_editable_inset || !is_struckout)) {
 673                         // calculate 1/3 height of the buffer's default font
 674                         int const middle =
 675                                 yo_ - font_metrics::maxAscent(text_.defaultfont_) / 3;
 676                         pain_.line(last_strikeout_x, middle, int(x_), middle,
 677                                 LColor::strikeout, Painter::line_solid, Painter::line_thin);
 678                         running_strikeout = false;
 679                 }
 680
 681                 if (body_pos > 0 && pos == body_pos - 1) {
 682                         int const lwidth = font_metrics::width(layout->labelsep,
 683                                 getLabelFont());
 684
 685                         x_ += label_hfill_ + lwidth - width_pos;
 686                 }
 687
 688                 if (par_.isHfill(pos)) {
 689                         x_ += 1;
 690
 691                         int const y0 = yo_;
 692                         int const y1 = y0 - defaultRowHeight() / 2;
 693
 694                         pain_.line(int(x_), y1, int(x_), y0, LColor::added_space);
 695
 696                         if (hfillExpansion(par_, row_, pos)) {
 697                                 int const y2 = (y0 + y1) / 2;
 698
 699                                 if (pos >= body_pos) {
 700                                         pain_.line(int(x_), y2, int(x_ + hfill_), y2,
 701                                                   LColor::added_space,
 702                                                   Painter::line_onoffdash);
 703                                         x_ += hfill_;
 704                                 } else {
 705                                         pain_.line(int(x_), y2, int(x_ + label_hfill_), y2,
 706                                                   LColor::added_space,
 707                                                   Painter::line_onoffdash);
 708                                         x_ += label_hfill_;
 709                                 }
 710                                 pain_.line(int(x_), y1, int(x_), y0, LColor::added_space);
 711                         }
 712                         x_ += 2;
 713                         ++vpos;
 714                 } else if (par_.isSeparator(pos)) {
 715                         x_ += width_pos;
 716                         if (pos >= body_pos)
 717                                 x_ += separator_;
 718                         ++vpos;
 719                 } else {
 720                         paintFromPos(vpos);
 721                 }
 722         }
 723
 724         // if we reach the end of a struck out range, paint it
 725         if (running_strikeout) {
 726                 // calculate 1/3 height of the buffer's default font
 727                 int const middle =
 728                         yo_ - font_metrics::maxAscent(text_.defaultfont_) / 3;
 729                 pain_.line(last_strikeout_x, middle, int(x_), middle,
 730                         LColor::strikeout, Painter::line_solid, Painter::line_thin);
 731                 running_strikeout = false;
 732         }
 733 }
 734
 735
 736 void paintPar
 737         (PainterInfo & pi, LyXText const & text, pit_type pit, int x, int y)
 738 {
 739 //      lyxerr << "  paintPar: pit: " << pit << " at y: " << y << endl;
 740         static NullPainter nop;
 741         static PainterInfo nullpi(pi.base.bv, nop);
 742         int const ww = pi.base.bv->workHeight();
 743
 744         Paragraph & par = text.paragraphs()[pit];
 745
 746         RowList::const_iterator const rb = par.rows().begin();
 747         RowList::const_iterator const re = par.rows().end();
 748         theCoords.parPos()[&text][pit] = Point(x, y);
 749
 750         y -= rb->ascent();
 751         for (RowList::const_iterator rit = rb; rit != re; ++rit) {
 752                 y += rit->ascent();
 753                 bool const inside = (y + rit->descent() >= 0
 754                                        && y - rit->ascent() < ww);
 755                 RowPainter rp(inside ? pi : nullpi, text, pit, *rit, x, y);
 756
 757                 y += rit->descent();
 758                 rp.paintAppendix();
 759                 rp.paintDepthBar();
 760                 rp.paintChangeBar();
 761                 if (rit == rb)
 762                         rp.paintFirst();
 763                 if (rit + 1 == re)
 764                         rp.paintLast();
 765                 rp.paintText();
 766         }
 767 }
 768
 769 } // namespace anon
 770
 771
 772 void paintText(BufferView const & bv, ViewMetricsInfo const & vi)
 773 {
 774         Painter & pain = bv.painter();
 775         LyXText * const text = bv.text();
 776
 777         // clear background
 778         pain.fillRectangle(0, vi.y1, bv.workWidth(), vi.y2 - vi.y1,
 779                            LColor::background);
 780
 781         // draw selection
 782         PainterInfo pi(const_cast<BufferView *>(&bv), pain);
 783
 784         text->drawSelection(pi, 0, 0);
 785
 786         int yy = vi.y1;
 787         // draw contents
 788         for (pit_type pit = vi.p1; pit <= vi.p2; ++pit) {
 789                 yy += text->getPar(pit).ascent();
 790                 paintPar(pi, *bv.text(), pit, 0, yy);
 791                 yy += text->getPar(pit).descent();
 792         }
 793
 794
 795         // paint one paragraph above and one below
 796         if (vi.p1 > 0) {
 797                 text->redoParagraph(vi.p1 - 1);
 798                 paintPar(pi, *bv.text(), vi.p1 - 1, 0,
 799                          vi.y1 -  text->getPar(vi.p1 - 1).descent());
 800         }
 801
 802         if (vi.p2 < lyx::pit_type(text->paragraphs().size()) - 1) {
 803                 text->redoParagraph(vi.p2 + 1);
 804                 paintPar(pi, *bv.text(), vi.p2 + 1, 0,
 805                          vi.y2 + text->getPar(vi.p2 + 1).ascent());
 806         }
 807
 808         // and grey out above (should not happen later)
 809 //      lyxerr << "par ascent: " << text->getPar(vi.p1).ascent() << endl;
 810         if (vi.y1 > 0)
 811                 pain.fillRectangle(0, 0, bv.workWidth(), vi.y1, LColor::bottomarea);
 812
 813         // and possibly grey out below
 814 //      lyxerr << "par descent: " << text->getPar(vi.p1).ascent() << endl;
 815         if (vi.y2 < bv.workHeight())
 816                 pain.fillRectangle(0, vi.y2, bv.workWidth(), bv.workHeight() - vi.y2, LColor::bottomarea);
 817 }
 818
 819
 820 void paintTextInset(LyXText const & text, PainterInfo & pi, int x, int y)
 821 {
 822 //      lyxerr << "  paintTextInset: y: " << y << endl;
 823
 824         y -= text.getPar(0).ascent();
 825         for (int pit = 0; pit < int(text.paragraphs().size()); ++pit) {
 826                 y += text.getPar(pit).ascent();
 827                 paintPar(pi, text, pit, x, y);
 828                 y += text.getPar(pit).descent();
 829         }
 830 }