src/rowpainter.C

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