src/rowpainter.C

   1 /**
   2  * \file rowpainter.C
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author various
   7  * \author John Levon
   8  *
   9  * Full author contact details are available in file CREDITS.
  10  */
  11
  12 #include <config.h>
  13
  14 #include "rowpainter.h"
  15
  16 #include "buffer.h"
  17 #include "cursor.h"
  18 #include "debug.h"
  19 #include "bufferparams.h"
  20 #include "BufferView.h"
  21 #include "encoding.h"
  22 #include "gettext.h"
  23 #include "language.h"
  24 #include "LColor.h"
  25 #include "lyxrc.h"
  26 #include "lyxrow.h"
  27 #include "lyxrow_funcs.h"
  28 #include "metricsinfo.h"
  29 #include "paragraph.h"
  30 #include "paragraph_funcs.h"
  31 #include "ParagraphParameters.h"
  32 #include "vspace.h"
  33
  34 #include "frontends/font_metrics.h"
  35 #include "frontends/Painter.h"
  36
  37 #include "insets/insettext.h"
  38
  39 #include "support/textutils.h"
  40
  41 using lyx::pos_type;
  42
  43 using std::endl;
  44 using std::max;
  45 using std::string;
  46
  47 extern int NEST_MARGIN;
  48 extern int CHANGEBAR_MARGIN;
  49
  50
  51 namespace {
  52
  53 /**
  54  * A class used for painting an individual row of text.
  55  */
  56 class RowPainter {
  57 public:
  58         /// initialise and run painter
  59         RowPainter(BufferView const & bv, LyXText const & text,
  60                 ParagraphList::iterator pit, RowList::iterator rit, int xo, int yo);
  61 private:
  62         // paint various parts
  63         void paintBackground();
  64         void paintSelection();
  65         void paintAppendix();
  66         void paintDepthBar();
  67         void paintChangeBar();
  68         void paintFirst();
  69         void paintLast();
  70         void paintForeignMark(double orig_x, LyXFont const & orig_font);
  71         void paintHebrewComposeChar(lyx::pos_type & vpos);
  72         void paintArabicComposeChar(lyx::pos_type & vpos);
  73         void paintChars(lyx::pos_type & vpos, bool hebrew, bool arabic);
  74         int paintAppendixStart(int y);
  75         void paintText();
  76         void paintFromPos(lyx::pos_type & vpos);
  77         void paintInset(lyx::pos_type const pos);
  78
  79         /// return left margin
  80         int leftMargin() const;
  81
  82         /// return the font at the given pos
  83         LyXFont const getFont(lyx::pos_type pos) const;
  84
  85         /// return the label font for this row
  86         LyXFont const getLabelFont() const;
  87
  88         /// return pixel width for the given pos
  89         int singleWidth(lyx::pos_type pos) const;
  90         int singleWidth(lyx::pos_type pos, char c) const;
  91
  92         /// bufferview to paint on
  93         BufferView const & bv_;
  94
  95         /// Painter to use
  96         Painter & pain_;
  97
  98         /// LyXText for the row
  99         LyXText const & text_;
 100
 101         /// The row to paint
 102         RowList::iterator const rit_;
 103         Row & row_;
 104
 105         /// Row's paragraph
 106         mutable ParagraphList::iterator  pit_;
 107
 108         // Looks ugly - is
 109         double xo_;
 110         int yo_;
 111         double x_;
 112         int width_;
 113         double separator_;
 114         double hfill_;
 115         double label_hfill_;
 116 };
 117
 118
 119 RowPainter::RowPainter(BufferView const & bv, LyXText const & text,
 120      ParagraphList::iterator pit, RowList::iterator rit,
 121      int xo, int yo)
 122         : bv_(bv), pain_(bv_.painter()), text_(text), rit_(rit), row_(*rit),
 123           pit_(pit), xo_(xo), yo_(yo), x_(row_.x()),
 124                 width_(text_.textWidth()),
 125                 separator_(row_.fill_separator()),
 126                 hfill_(row_.fill_hfill()),
 127                 label_hfill_(row_.fill_label_hfill())
 128 {
 129         //lyxerr << "RowPainter: x: " << x_ << " xo: " << xo << " yo: " << yo
 130         //      << " pit->y: " << pit_->y
 131         //      << " row: " << (pit_->size() ? pit_->getChar(row_.pos()) : 'X') << endl;
 132         x_ += xo_;
 133
 134         // background has already been cleared.
 135         if (&text_ == bv_.text())
 136                 paintBackground();
 137
 138         // paint the selection background
 139         if (bv_.cursor().selection() && &text_ == bv_.cursor().text())
 140                 paintSelection();
 141
 142         // vertical lines for appendix
 143         paintAppendix();
 144
 145         // environment depth brackets
 146         paintDepthBar();
 147
 148         // changebar
 149         paintChangeBar();
 150
 151         if (row_.pos() == 0)
 152                 paintFirst();
 153
 154         if (row_.endpos() >= pit_->size())
 155                 paintLast();
 156
 157         // paint text
 158         paintText();
 159 }
 160
 161
 162 /// "temporary"
 163 LyXFont const RowPainter::getFont(pos_type pos) const
 164 {
 165         return text_.getFont(pit_, pos);
 166 }
 167
 168
 169 int RowPainter::singleWidth(lyx::pos_type pos) const
 170 {
 171         return text_.singleWidth(pit_, pos);
 172 }
 173
 174
 175 int RowPainter::singleWidth(lyx::pos_type pos, char c) const
 176 {
 177         LyXFont const & font = text_.getFont(pit_, pos);
 178         return text_.singleWidth(pit_, pos, c, font);
 179 }
 180
 181
 182 LyXFont const RowPainter::getLabelFont() const
 183 {
 184         return text_.getLabelFont(pit_);
 185 }
 186
 187
 188 int RowPainter::leftMargin() const
 189 {
 190         return text_.leftMargin(pit_, row_.pos());
 191 }
 192
 193
 194 void RowPainter::paintInset(pos_type const pos)
 195 {
 196         InsetBase const * inset = pit_->getInset(pos);
 197         BOOST_ASSERT(inset);
 198         PainterInfo pi(const_cast<BufferView *>(&bv_));
 199         pi.base.font = getFont(pos);
 200         inset->drawSelection(pi, int(x_), yo_ + row_.baseline());
 201         inset->draw(pi, int(x_), yo_ + row_.baseline());
 202         x_ += inset->width();
 203 }
 204
 205
 206 void RowPainter::paintHebrewComposeChar(pos_type & vpos)
 207 {
 208         pos_type pos = text_.bidi.vis2log(vpos);
 209
 210         string str;
 211
 212         // first char
 213         char c = pit_->getChar(pos);
 214         str += c;
 215         ++vpos;
 216
 217         LyXFont const & font = getFont(pos);
 218         int const width = font_metrics::width(c, font);
 219         int dx = 0;
 220
 221         for (pos_type i = pos - 1; i >= 0; --i) {
 222                 c = pit_->getChar(i);
 223                 if (!Encodings::IsComposeChar_hebrew(c)) {
 224                         if (IsPrintableNonspace(c)) {
 225                                 int const width2 = singleWidth(i, c);
 226                                 // dalet / resh
 227                                 dx = (c == 'ø' || c == 'ã')
 228                                         ? width2 - width
 229                                         : (width2 - width) / 2;
 230                         }
 231                         break;
 232                 }
 233         }
 234
 235         // Draw nikud
 236         pain_.text(int(x_) + dx, yo_ + row_.baseline(), str, font);
 237 }
 238
 239
 240 void RowPainter::paintArabicComposeChar(pos_type & vpos)
 241 {
 242         pos_type pos = text_.bidi.vis2log(vpos);
 243         string str;
 244
 245         // first char
 246         char c = pit_->getChar(pos);
 247         c = pit_->transformChar(c, pos);
 248         str += c;
 249         ++vpos;
 250
 251         LyXFont const & font = getFont(pos);
 252         int const width = font_metrics::width(c, font);
 253         int dx = 0;
 254
 255         for (pos_type i = pos - 1; i >= 0; --i) {
 256                 c = pit_->getChar(i);
 257                 if (!Encodings::IsComposeChar_arabic(c)) {
 258                         if (IsPrintableNonspace(c)) {
 259                                 int const width2 = singleWidth(i, c);
 260                                 dx = (width2 - width) / 2;
 261                         }
 262                         break;
 263                 }
 264         }
 265         // Draw nikud
 266         pain_.text(int(x_) + dx, yo_ + row_.baseline(), str, font);
 267 }
 268
 269
 270 void RowPainter::paintChars(pos_type & vpos, bool hebrew, bool arabic)
 271 {
 272         pos_type pos = text_.bidi.vis2log(vpos);
 273         pos_type const end = row_.endpos();
 274         LyXFont orig_font = getFont(pos);
 275
 276         // first character
 277         string str;
 278         str += pit_->getChar(pos);
 279         if (arabic) {
 280                 unsigned char c = str[0];
 281                 str[0] = pit_->transformChar(c, pos);
 282         }
 283
 284         bool prev_struckout = isDeletedText(*pit_, pos);
 285         bool prev_newtext = isInsertedText(*pit_, pos);
 286
 287         // collect as much similar chars as we can
 288         for (++vpos; vpos < end && (pos = text_.bidi.vis2log(vpos)) >= 0; ++vpos) {
 289                 char c = pit_->getChar(pos);
 290
 291                 if (!IsPrintableNonspace(c))
 292                         break;
 293
 294                 if (prev_struckout != isDeletedText(*pit_, pos))
 295                         break;
 296
 297                 if (prev_newtext != isInsertedText(*pit_, pos))
 298                         break;
 299
 300                 if (arabic && Encodings::IsComposeChar_arabic(c))
 301                         break;
 302
 303                 if (hebrew && Encodings::IsComposeChar_hebrew(c))
 304                         break;
 305
 306                 if (orig_font != getFont(pos))
 307                         break;
 308
 309                 if (arabic)
 310                         c = pit_->transformChar(c, pos);
 311
 312                 str += c;
 313         }
 314
 315         if (prev_struckout)
 316                 orig_font.setColor(LColor::strikeout);
 317         else if (prev_newtext)
 318                 orig_font.setColor(LColor::newtext);
 319
 320         // Draw text and set the new x position
 321         //lyxerr << "paint row: yo_ " << yo_ << " baseline: " << row_.baseline()
 322         //      << "\n";
 323         pain_.text(int(x_), yo_ + row_.baseline(), str, orig_font);
 324         x_ += font_metrics::width(str, orig_font);
 325 }
 326
 327
 328 void RowPainter::paintForeignMark(double orig_x, LyXFont const & orig_font)
 329 {
 330         if (!lyxrc.mark_foreign_language)
 331                 return;
 332         if (orig_font.language() == latex_language)
 333                 return;
 334         if (orig_font.language() == bv_.buffer()->params().language)
 335                 return;
 336
 337         int const y = yo_ + row_.baseline() + 1;
 338         pain_.line(int(orig_x), y, int(x_), y, LColor::language);
 339 }
 340
 341
 342 void RowPainter::paintFromPos(pos_type & vpos)
 343 {
 344         pos_type const pos = text_.bidi.vis2log(vpos);
 345
 346         LyXFont const & orig_font = getFont(pos);
 347
 348         double const orig_x = x_;
 349
 350         char const c = pit_->getChar(pos);
 351
 352         if (c == Paragraph::META_INSET) {
 353                 paintInset(pos);
 354                 ++vpos;
 355                 paintForeignMark(orig_x, orig_font);
 356                 return;
 357         }
 358
 359         // usual characters, no insets
 360
 361         // special case languages
 362         bool const hebrew = (orig_font.language()->lang() == "hebrew");
 363         bool const arabic =
 364                 orig_font.language()->lang() == "arabic" &&
 365                 (lyxrc.font_norm_type == LyXRC::ISO_8859_6_8 ||
 366                 lyxrc.font_norm_type == LyXRC::ISO_10646_1);
 367
 368         // draw as many chars as we can
 369         if ((!hebrew && !arabic)
 370                 || (hebrew && !Encodings::IsComposeChar_hebrew(c))
 371                 || (arabic && !Encodings::IsComposeChar_arabic(c))) {
 372                 paintChars(vpos, hebrew, arabic);
 373         } else if (hebrew) {
 374                 paintHebrewComposeChar(vpos);
 375         } else if (arabic) {
 376                 paintArabicComposeChar(vpos);
 377         }
 378
 379         paintForeignMark(orig_x, orig_font);
 380 }
 381
 382
 383 void RowPainter::paintBackground()
 384 {
 385         int const x = int(xo_);
 386         int const y = yo_ < 0 ? 0 : yo_;
 387         int const h = yo_ < 0 ? row_.height() + yo_ : row_.height();
 388         pain_.fillRectangle(x, y, width_, h, text_.backgroundColor());
 389 }
 390
 391
 392 void RowPainter::paintSelection()
 393 {
 394         bool const is_rtl = text_.isRTL(*pit_);
 395
 396         // the current selection
 397         LCursor const & cur = bv_.cursor();
 398         int const startx = text_.cursorX(cur.selBegin());
 399         int const endx = text_.cursorX(cur.selEnd());
 400         int const starty = text_.cursorY(cur.selBegin());
 401         int const endy = text_.cursorY(cur.selEnd());
 402         ParagraphList::iterator startpit = text_.getPar(cur.selBegin());
 403         ParagraphList::iterator endpit = text_.getPar(cur.selEnd());
 404         RowList::iterator startrow = startpit->getRow(cur.selBegin().pos());
 405         RowList::iterator endrow = endpit->getRow(cur.selEnd().pos());
 406         int const h = row_.height();
 407
 408         int const row_y = text_.yo_ + pit_->y + row_.y_offset();
 409
 410         bool const sel_starts_here = startpit == pit_ && startrow == rit_;
 411         bool const sel_ends_here   = endpit == pit_ && endrow == rit_;
 412         bool const sel_on_one_row  = sel_starts_here && sel_ends_here;
 413
 414         if (text_.bidi.same_direction()) {
 415                 int x;
 416                 int w;
 417                 if (sel_on_one_row) {
 418                         if (startx < endx) {
 419                                 x = startx;
 420                                 w = endx - startx;
 421                         } else {
 422                                 x = endx;
 423                                 w = startx - endx;
 424                         }
 425                         pain_.fillRectangle(x, yo_, w, h, LColor::selection);
 426                 } else if (sel_starts_here) {
 427                         int const x = is_rtl ? 0 : startx;
 428                         int const w = is_rtl ? startx : (width_ - startx);
 429                         pain_.fillRectangle(x, yo_, w, h, LColor::selection);
 430                 } else if (sel_ends_here) {
 431                         int const x = is_rtl ? endx : 0;
 432                         int const w = is_rtl ? (width_ - endx) : endx;
 433                         pain_.fillRectangle(x, yo_, w, h, LColor::selection);
 434                 } else if (row_y > starty && row_y < endy) {
 435                         pain_.fillRectangle(int(xo_), yo_, width_, h, LColor::selection);
 436                 }
 437                 return;
 438         }
 439
 440         if ((startpit != pit_ && startrow != rit_ && !is_rtl)
 441                 || (endpit != pit_ && endrow != rit_ && is_rtl))
 442                 pain_.fillRectangle(int(xo_), yo_,
 443                         int(x_), h, LColor::selection);
 444
 445         pos_type const body_pos = pit_->beginOfBody();
 446         pos_type const end = row_.endpos();
 447         double tmpx = x_;
 448
 449         for (pos_type vpos = row_.pos(); vpos < end; ++vpos)  {
 450                 pos_type pos = text_.bidi.vis2log(vpos);
 451                 double const old_tmpx = tmpx;
 452                 if (body_pos > 0 && pos == body_pos - 1) {
 453                         LyXLayout_ptr const & layout = pit_->layout();
 454                         LyXFont const lfont = getLabelFont();
 455
 456                         tmpx += label_hfill_ + font_metrics::width(layout->labelsep, lfont);
 457
 458                         if (pit_->isLineSeparator(body_pos - 1))
 459                                 tmpx -= singleWidth(body_pos - 1);
 460                 }
 461
 462                 tmpx += singleWidth(pos);
 463
 464                 if (hfillExpansion(*pit_, row_, pos)) {
 465                         if (pos >= body_pos)
 466                                 tmpx += hfill_;
 467                         else
 468                                 tmpx += label_hfill_;
 469                 } else {
 470                         if (pit_->isSeparator(pos) && pos >= body_pos)
 471                                 tmpx += separator_;
 472                 }
 473
 474                 if (((startpit != pit_ && startrow != rit_)
 475                                 || cur.selBegin().pos() <= pos) &&
 476                         ((endpit != pit_ && endrow != rit_)
 477                                 || pos < cur.selEnd().pos())) {
 478                         // Here we do not use x_ as xo_ was added to x_.
 479                         pain_.fillRectangle(int(old_tmpx), yo_,
 480                                 int(tmpx - old_tmpx + 1), h, LColor::selection);
 481                 }
 482         }
 483
 484         if ((startpit != pit_ && startrow != rit_ && is_rtl) ||
 485             (endpit != pit_ && endrow != rit_ && !is_rtl)) {
 486                 pain_.fillRectangle(int(xo_ + tmpx),
 487                         yo_, int(width_ - tmpx), h, LColor::selection);
 488         }
 489 }
 490
 491
 492 void RowPainter::paintChangeBar()
 493 {
 494         pos_type const start = row_.pos();
 495         pos_type const end = row_.endpos();
 496
 497         if (start == end || !pit_->isChanged(start, end - 1))
 498                 return;
 499
 500         int const height = text_.isLastRow(pit_, row_)
 501                 ? row_.baseline()
 502                 : row_.height() + boost::next(rit_)->top_of_text();
 503
 504         pain_.fillRectangle(4, yo_, 5, height, LColor::changebar);
 505 }
 506
 507
 508 void RowPainter::paintAppendix()
 509 {
 510         if (!pit_->params().appendix())
 511                 return;
 512
 513         int y = yo_;
 514
 515         if (pit_->params().startOfAppendix())
 516                 y += 2 * defaultRowHeight();
 517
 518         pain_.line(1, y, 1, yo_ + row_.height(), LColor::appendix);
 519         pain_.line(width_ - 2, y, width_ - 2, yo_ + row_.height(), LColor::appendix);
 520 }
 521
 522
 523 void RowPainter::paintDepthBar()
 524 {
 525         Paragraph::depth_type const depth = pit_->getDepth();
 526
 527         if (depth <= 0)
 528                 return;
 529
 530         Paragraph::depth_type prev_depth = 0;
 531         if (!text_.isFirstRow(pit_, row_)) {
 532                 ParagraphList::iterator pit2 = pit_;
 533                 if (row_.pos() == 0)
 534                         --pit2;
 535                 prev_depth = pit2->getDepth();
 536         }
 537
 538         Paragraph::depth_type next_depth = 0;
 539         if (!text_.isLastRow(pit_, row_)) {
 540                 ParagraphList::iterator pit2 = pit_;
 541                 if (row_.endpos() >= pit2->size())
 542                         ++pit2;
 543                 next_depth = pit2->getDepth();
 544         }
 545
 546         for (Paragraph::depth_type i = 1; i <= depth; ++i) {
 547                 int const w = NEST_MARGIN / 5;
 548                 int x = int(w * i + xo_);
 549                 // only consider the changebar space if we're drawing outer left
 550                 if (xo_ == 0)
 551                         x += CHANGEBAR_MARGIN;
 552                 int const h = yo_ + row_.height() - 1 - (i - next_depth - 1) * 3;
 553
 554                 pain_.line(x, yo_, x, h, LColor::depthbar);
 555
 556                 if (i > prev_depth)
 557                         pain_.fillRectangle(x, yo_, w, 2, LColor::depthbar);
 558                 if (i > next_depth)
 559                         pain_.fillRectangle(x, h, w, 2, LColor::depthbar);
 560         }
 561 }
 562
 563
 564 int RowPainter::paintAppendixStart(int y)
 565 {
 566         LyXFont pb_font;
 567         pb_font.setColor(LColor::appendix);
 568         pb_font.decSize();
 569
 570         string const label = _("Appendix");
 571         int w = 0;
 572         int a = 0;
 573         int d = 0;
 574         font_metrics::rectText(label, pb_font, w, a, d);
 575
 576         int const text_start = int(xo_ + (width_ - w) / 2);
 577         int const text_end = text_start + w;
 578
 579         pain_.rectText(text_start, y + d, label, pb_font, LColor::none, LColor::none);
 580
 581         pain_.line(int(xo_ + 1), y, text_start, y, LColor::appendix);
 582         pain_.line(text_end, y, int(xo_ + width_ - 2), y, LColor::appendix);
 583
 584         return 3 * defaultRowHeight();
 585 }
 586
 587
 588 void RowPainter::paintFirst()
 589 {
 590         ParagraphParameters const & parparams = pit_->params();
 591
 592         int y_top = 0;
 593
 594         // start of appendix?
 595         if (parparams.startOfAppendix())
 596                 y_top += paintAppendixStart(yo_ + y_top + 2 * defaultRowHeight());
 597
 598         Buffer const & buffer = *bv_.buffer();
 599
 600         LyXLayout_ptr const & layout = pit_->layout();
 601
 602         if (buffer.params().paragraph_separation == BufferParams::PARSEP_SKIP) {
 603                 if (pit_ != text_.paragraphs().begin()) {
 604                         if (layout->latextype == LATEX_PARAGRAPH
 605                                 && !pit_->getDepth()) {
 606                                 y_top += buffer.params().getDefSkip().inPixels(bv_);
 607                         } else {
 608                                 LyXLayout_ptr const & playout =
 609                                         boost::prior(pit_)->layout();
 610                                 if (playout->latextype == LATEX_PARAGRAPH
 611                                         && !boost::prior(pit_)->getDepth()) {
 612                                         // is it right to use defskip here, too? (AS)
 613                                         y_top += buffer.params().getDefSkip().inPixels(bv_);
 614                                 }
 615                         }
 616                 }
 617         }
 618
 619         bool const is_rtl = text_.isRTL(*pit_);
 620         bool const is_seq = isFirstInSequence(pit_, text_.paragraphs());
 621         //lyxerr << "paintFirst: " << pit_->id() << " is_seq: " << is_seq << std::endl;
 622
 623         // should we print a label?
 624         if (layout->labeltype >= LABEL_STATIC
 625             && (layout->labeltype != LABEL_STATIC
 626                       || layout->latextype != LATEX_ENVIRONMENT
 627                       || is_seq)) {
 628
 629                 LyXFont font = getLabelFont();
 630                 if (!pit_->getLabelstring().empty()) {
 631                         double x = x_;
 632                         string const str = pit_->getLabelstring();
 633
 634                         // this is special code for the chapter layout. This is
 635                         // printed in an extra row and has a pagebreak at
 636                         // the top.
 637                         if (layout->counter == "chapter") {
 638                                 if (buffer.params().secnumdepth >= 0) {
 639                                         float spacing_val = 1.0;
 640                                         if (!parparams.spacing().isDefault()) {
 641                                                 spacing_val = parparams.spacing().getValue();
 642                                         } else {
 643                                                 spacing_val = buffer.params().spacing().getValue();
 644                                         }
 645
 646                                         int const maxdesc =
 647                                                 int(font_metrics::maxDescent(font) * layout->spacing.getValue() * spacing_val)
 648                                                 + int(layout->parsep) * defaultRowHeight();
 649
 650                                         if (is_rtl) {
 651                                                 x = width_ - leftMargin() -
 652                                                         font_metrics::width(str, font);
 653                                         }
 654
 655                                         pain_.text(int(x),
 656                                                 yo_ + row_.baseline() -
 657                                                 row_.ascent_of_text() - maxdesc,
 658                                                 str, font);
 659                                 }
 660                         } else {
 661                                 if (is_rtl) {
 662                                         x = width_ - leftMargin()
 663                                                 + font_metrics::width(layout->labelsep, font);
 664                                 } else {
 665                                         x = x_ - font_metrics::width(layout->labelsep, font)
 666                                                 - font_metrics::width(str, font);
 667                                 }
 668
 669                                 pain_.text(int(x), yo_ + row_.baseline(), str, font);
 670                         }
 671                 }
 672
 673         // the labels at the top of an environment.
 674         // More or less for bibliography
 675         } else if (is_seq &&
 676                 (layout->labeltype == LABEL_TOP_ENVIRONMENT ||
 677                 layout->labeltype == LABEL_BIBLIO ||
 678                 layout->labeltype == LABEL_CENTERED_TOP_ENVIRONMENT)) {
 679                 LyXFont font = getLabelFont();
 680                 if (!pit_->getLabelstring().empty()) {
 681                         string const str = pit_->getLabelstring();
 682                         float spacing_val = 1.0;
 683                         if (!parparams.spacing().isDefault()) {
 684                                 spacing_val = parparams.spacing().getValue();
 685                         } else {
 686                                 spacing_val = buffer.params().spacing().getValue();
 687                         }
 688
 689                         int maxdesc =
 690                                 int(font_metrics::maxDescent(font) * layout->spacing.getValue() * spacing_val
 691                                 + (layout->labelbottomsep * defaultRowHeight()));
 692
 693                         double x = x_;
 694                         if (layout->labeltype == LABEL_CENTERED_TOP_ENVIRONMENT) {
 695                                 x = ((is_rtl ? leftMargin() : x_)
 696                                          + width_ - text_.rightMargin(*pit_)) / 2;
 697                                 x -= font_metrics::width(str, font) / 2;
 698                         } else if (is_rtl) {
 699                                 x = width_ - leftMargin() -
 700                                         font_metrics::width(str, font);
 701                         }
 702                         pain_.text(int(x),
 703                             yo_ + row_.baseline() - row_.ascent_of_text() - maxdesc,
 704                                   str, font);
 705                 }
 706         }
 707 }
 708
 709
 710 void RowPainter::paintLast()
 711 {
 712         bool const is_rtl = text_.isRTL(*pit_);
 713         int const endlabel = getEndLabel(pit_, text_.paragraphs());
 714
 715         // draw an endlabel
 716         switch (endlabel) {
 717         case END_LABEL_BOX:
 718         case END_LABEL_FILLED_BOX: {
 719                 LyXFont const font = getLabelFont();
 720                 int const size = int(0.75 * font_metrics::maxAscent(font));
 721                 int const y = yo_ + row_.baseline() - size;
 722                 int x = is_rtl ? NEST_MARGIN + CHANGEBAR_MARGIN: width_ - size;
 723
 724                 if (width_ - row_.width() <= size)
 725                         x += (size - width_ + row_.width() + 1) * (is_rtl ? -1 : 1);
 726
 727                 if (endlabel == END_LABEL_BOX)
 728                         pain_.rectangle(x, y, size, size, LColor::eolmarker);
 729                 else
 730                         pain_.fillRectangle(x, y, size, size, LColor::eolmarker);
 731                 break;
 732         }
 733
 734         case END_LABEL_STATIC: {
 735                 LyXFont font = getLabelFont();
 736                 string const & str = pit_->layout()->endlabelstring();
 737                 double const x = is_rtl ?
 738                         x_ - font_metrics::width(str, font)
 739                         : - text_.rightMargin(*pit_) - row_.width();
 740                 pain_.text(int(x), yo_ + row_.baseline(), str, font);
 741                 break;
 742         }
 743
 744         case END_LABEL_NO_LABEL:
 745                 break;
 746         }
 747 }
 748
 749
 750 void RowPainter::paintText()
 751 {
 752         pos_type const end = row_.endpos();
 753         pos_type body_pos = pit_->beginOfBody();
 754         if (body_pos > 0 &&
 755                 (body_pos > end || !pit_->isLineSeparator(body_pos - 1))) {
 756                 body_pos = 0;
 757         }
 758
 759         LyXLayout_ptr const & layout = pit_->layout();
 760
 761         bool running_strikeout = false;
 762         bool is_struckout = false;
 763         int last_strikeout_x = 0;
 764
 765         for (pos_type vpos = row_.pos(); vpos < end; ) {
 766                 if (x_ > bv_.workWidth())
 767                         break;
 768
 769                 pos_type pos = text_.bidi.vis2log(vpos);
 770
 771                 if (pos >= pit_->size()) {
 772                         ++vpos;
 773                         continue;
 774                 }
 775
 776                 if (x_ + singleWidth(pos) < 0) {
 777                         x_ += singleWidth(pos);
 778                         ++vpos;
 779                         continue;
 780                 }
 781
 782                 is_struckout = isDeletedText(*pit_, pos);
 783
 784                 if (is_struckout && !running_strikeout) {
 785                         running_strikeout = true;
 786                         last_strikeout_x = int(x_);
 787                 }
 788
 789                 bool const highly_editable_inset = pit_->isInset(pos)
 790                         && isHighlyEditableInset(pit_->getInset(pos));
 791
 792                 // if we reach the end of a struck out range, paint it
 793                 // we also don't paint across things like tables
 794                 if (running_strikeout && (highly_editable_inset || !is_struckout)) {
 795                         int const middle = yo_ + (row_.baseline() + row_.top_of_text()) / 2;
 796                         pain_.line(last_strikeout_x, middle, int(x_), middle,
 797                                 LColor::strikeout, Painter::line_solid, Painter::line_thin);
 798                         running_strikeout = false;
 799                 }
 800
 801                 if (body_pos > 0 && pos == body_pos - 1) {
 802                         int const lwidth = font_metrics::width(layout->labelsep,
 803                                 getLabelFont());
 804
 805                         x_ += label_hfill_ + lwidth - singleWidth(body_pos - 1);
 806                 }
 807
 808                 if (pit_->isHfill(pos)) {
 809                         x_ += 1;
 810
 811                         int const y0 = yo_ + row_.baseline();
 812                         int const y1 = y0 - defaultRowHeight() / 2;
 813
 814                         pain_.line(int(x_), y1, int(x_), y0, LColor::added_space);
 815
 816                         if (hfillExpansion(*pit_, row_, pos)) {
 817                                 int const y2 = (y0 + y1) / 2;
 818
 819                                 if (pos >= body_pos) {
 820                                         pain_.line(int(x_), y2, int(x_ + hfill_), y2,
 821                                                   LColor::added_space,
 822                                                   Painter::line_onoffdash);
 823                                         x_ += hfill_;
 824                                 } else {
 825                                         pain_.line(int(x_), y2, int(x_ + label_hfill_), y2,
 826                                                   LColor::added_space,
 827                                                   Painter::line_onoffdash);
 828                                         x_ += label_hfill_;
 829                                 }
 830                                 pain_.line(int(x_), y1, int(x_), y0, LColor::added_space);
 831                         }
 832                         x_ += 2;
 833                         ++vpos;
 834                 } else if (pit_->isSeparator(pos)) {
 835                         x_ += singleWidth(pos);
 836                         if (pos >= body_pos)
 837                                 x_ += separator_;
 838                         ++vpos;
 839                 } else {
 840                         paintFromPos(vpos);
 841                 }
 842         }
 843
 844         // if we reach the end of a struck out range, paint it
 845         if (running_strikeout) {
 846                 int const middle = yo_ + (row_.baseline() + row_.top_of_text()) / 2;
 847                 pain_.line(last_strikeout_x, middle, int(x_), middle,
 848                         LColor::strikeout, Painter::line_solid, Painter::line_thin);
 849                 running_strikeout = false;
 850         }
 851 }
 852
 853
 854 int paintPars(BufferView const & bv, LyXText const & text,
 855         ParagraphList::iterator pit, int xo, int yo, int y)
 856 {
 857         //lyxerr << "  paintRows: pit: " << &*pit << endl;
 858         int const y2 = bv.painter().paperHeight();
 859         y -= bv.top_y();
 860
 861         ParagraphList::iterator end = text.paragraphs().end();
 862
 863         for ( ; pit != end; ++pit) {
 864                 RowList::iterator row = pit->rows.begin();
 865                 RowList::iterator rend = pit->rows.end();
 866
 867                 for ( ; row != rend; ++row) {
 868                         RowPainter(bv, text, pit, row, xo, y + yo);
 869                         y += row->height();
 870                 }
 871                 if (yo + y >= y2)
 872                         break;
 873         }
 874
 875         return y;
 876 }
 877
 878 } // namespace anon
 879
 880
 881 int paintText(BufferView const & bv)
 882 {
 883         ParagraphList::iterator pit;
 884         bv.text()->updateParPositions();
 885         bv.text()->getRowNearY(bv.top_y(), pit);
 886         //lyxerr << "top_y: " << bv.top_y() << " y: " << pit->y << endl;
 887         return paintPars(bv, *bv.text(), pit, 0, 0, pit->y);
 888 }
 889
 890
 891 void paintTextInset(LyXText const & text, PainterInfo & pi, int xo, int yo)
 892 {
 893         paintPars(*pi.base.bv, text, text.paragraphs().begin(), xo, yo, 0);
 894 }