src/RowPainter.cpp

   1 /**
   2  * \file RowPainter.cpp
   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 #include <algorithm>
  14
  15 #include "RowPainter.h"
  16
  17 #include "Buffer.h"
  18 #include "CoordCache.h"
  19 #include "Cursor.h"
  20 #include "BufferParams.h"
  21 #include "BufferView.h"
  22 #include "Changes.h"
  23 #include "Language.h"
  24 #include "Layout.h"
  25 #include "LyXRC.h"
  26 #include "Row.h"
  27 #include "MetricsInfo.h"
  28 #include "Paragraph.h"
  29 #include "ParagraphMetrics.h"
  30 #include "ParagraphParameters.h"
  31 #include "TextMetrics.h"
  32 #include "VSpace.h"
  33
  34 #include "frontends/FontMetrics.h"
  35 #include "frontends/Painter.h"
  36
  37 #include "insets/InsetText.h"
  38
  39 #include "mathed/InsetMath.h"
  40
  41 #include "support/debug.h"
  42 #include "support/gettext.h"
  43 #include "support/textutils.h"
  44
  45 #include "support/lassert.h"
  46 #include <boost/crc.hpp>
  47
  48 using namespace std;
  49
  50 namespace lyx {
  51
  52 using frontend::Painter;
  53 using frontend::FontMetrics;
  54
  55
  56 RowPainter::RowPainter(PainterInfo & pi,
  57         Text const & text, pit_type pit, Row const & row, int x, int y)
  58         : pi_(pi), text_(text),
  59           text_metrics_(pi_.base.bv->textMetrics(&text)),
  60           pars_(text.paragraphs()),
  61           row_(row), pit_(pit), par_(text.paragraphs()[pit]),
  62           pm_(text_metrics_.parMetrics(pit)), change_(pi_.change_),
  63           xo_(x), yo_(y), width_(text_metrics_.width()),
  64           solid_line_thickness_(1), solid_line_offset_(1),
  65           dotted_line_thickness_(1), dotted_line_offset_(2)
  66 {
  67         if (lyxrc.zoom >= 200) {
  68                 // derive the line thickness from zoom factor
  69                 // the zoom is given in percent
  70                 // (increase thickness at 250%, 450% etc.)
  71                 solid_line_thickness_ = (lyxrc.zoom + 50) / 200;
  72                 // adjust line_offset_ too
  73                 solid_line_offset_ = 1 + solid_line_thickness_ / 2;
  74         }
  75         if (lyxrc.zoom >= 100) {
  76                 // derive the line thickness from zoom factor
  77                 // the zoom is given in percent
  78                 // (increase thickness at 150%, 250% etc.)
  79                 dotted_line_thickness_ = (lyxrc.zoom + 50) / 100;
  80                 // adjust line_offset_ too
  81                 dotted_line_offset_ = 1 + dotted_line_thickness_ / 2;
  82         }
  83
  84         x_ = row_.left_margin + xo_;
  85
  86         //lyxerr << "RowPainter: x: " << x_ << " xo: " << xo_ << " yo: " << yo_ << endl;
  87         //row_.dump();
  88
  89         LBUFERR(pit >= 0);
  90         LBUFERR(pit < int(text.paragraphs().size()));
  91 }
  92
  93
  94 FontInfo RowPainter::labelFont() const
  95 {
  96         FontInfo f = text_.labelFont(par_);
  97         // selected text?
  98         if (row_.begin_margin_sel || pi_.selected)
  99                 f.setPaintColor(Color_selectiontext);
 100         return f;
 101 }
 102
 103
 104 // If you want to debug inset metrics uncomment the following line:
 105 //#define DEBUG_METRICS
 106 // This draws green lines around each inset.
 107
 108
 109 void RowPainter::paintInset(Inset const * inset, Font const & font,
 110                             Change const & change,
 111                             pos_type const pos)
 112 {
 113         // Handle selection
 114         bool const pi_selected = pi_.selected;
 115         Cursor const & cur = pi_.base.bv->cursor();
 116         if (cur.selection() && cur.text() == &text_
 117                 && cur.normalAnchor().text() == &text_)
 118                 pi_.selected = row_.sel_beg <= pos && row_.sel_end > pos;
 119
 120         LASSERT(inset, return);
 121         // Backup full_repaint status because some insets (InsetTabular)
 122         // requires a full repaint
 123         bool const pi_full_repaint = pi_.full_repaint;
 124         bool const pi_do_spellcheck = pi_.do_spellcheck;
 125         Change const pi_change = pi_.change_;
 126
 127         pi_.base.font = inset->inheritFont() ? font.fontInfo() :
 128                 pi_.base.bv->buffer().params().getFont().fontInfo();
 129         pi_.ltr_pos = !font.isVisibleRightToLeft();
 130         pi_.change_ = change_.changed() ? change_ : change;
 131         pi_.do_spellcheck &= inset->allowSpellCheck();
 132
 133         int const x1 = int(x_);
 134         pi_.base.bv->coordCache().insets().add(inset, x1, yo_);
 135         // insets are painted completely. Recursive
 136         // FIXME: it is wrong to completely paint the background
 137         // if we want to do single row painting.
 138         inset->drawBackground(pi_, x1, yo_);
 139         inset->drawSelection(pi_, x1, yo_);
 140         inset->draw(pi_, x1, yo_);
 141
 142         Dimension const & dim = pm_.insetDimension(inset);
 143
 144         paintForeignMark(x_, font.language(), dim.descent());
 145
 146         x_ += dim.width();
 147
 148         // Restore full_repaint status.
 149         pi_.full_repaint = pi_full_repaint;
 150         pi_.change_ = pi_change;
 151         pi_.do_spellcheck = pi_do_spellcheck;
 152         pi_.selected = pi_selected;
 153
 154 #ifdef DEBUG_METRICS
 155         int const x2 = x1 + dim.wid;
 156         int const y1 = yo_ + dim.des;
 157         int const y2 = yo_ - dim.asc;
 158         pi_.pain.line(x1, y1, x1, y2, Color_green);
 159         pi_.pain.line(x1, y1, x2, y1, Color_green);
 160         pi_.pain.line(x2, y1, x2, y2, Color_green);
 161         pi_.pain.line(x1, y2, x2, y2, Color_green);
 162 #endif
 163 }
 164
 165
 166 void RowPainter::paintForeignMark(double orig_x, Language const * lang, int desc) const
 167 {
 168         if (!lyxrc.mark_foreign_language)
 169                 return;
 170         if (lang == latex_language)
 171                 return;
 172         if (lang == pi_.base.bv->buffer().params().language)
 173                 return;
 174
 175         int const y = yo_ + solid_line_offset_ + desc + solid_line_thickness_ / 2;
 176         pi_.pain.line(int(orig_x), y, int(x_), y, Color_language,
 177                 Painter::line_solid, solid_line_thickness_);
 178 }
 179
 180
 181 void RowPainter::paintMisspelledMark(double const orig_x,
 182                                      Row::Element const & e) const
 183 {
 184         // if changed the misspelled marker gets placed slightly lower than normal
 185         // to avoid drawing at the same vertical offset
 186         int const y = yo_ + solid_line_offset_ + solid_line_thickness_
 187                 + (e.change.changed() ? solid_line_thickness_ + 1 : 0)
 188                 + dotted_line_offset_;
 189
 190         //FIXME: this could be computed only once, it is probably not costly.
 191         // check for cursor position
 192         // don't draw misspelled marker for words at cursor position
 193         // we don't want to disturb the process of text editing
 194         DocIterator const nw = pi_.base.bv->cursor().newWord();
 195         pos_type cpos = -1;
 196         if (!nw.empty() && par_.id() == nw.paragraph().id()) {
 197                 cpos = nw.pos();
 198                 if (cpos > 0 && cpos == par_.size() && !par_.isWordSeparator(cpos-1))
 199                         --cpos;
 200                 else if (cpos > 0 && par_.isWordSeparator(cpos))
 201                         --cpos;
 202         }
 203
 204         pos_type pos = e.pos;
 205         while (pos < e.pos + pos_type(e.str.length())) {
 206                 if (!par_.isMisspelled(pos)) {
 207                         ++pos;
 208                         continue;
 209                 }
 210
 211                 FontSpan const & range = par_.getSpellRange(pos);
 212
 213                 // Skip element which are being edited
 214                 if (range.contains(cpos)) {
 215                         // the range includes the last element
 216                         pos = range.last + 1;
 217                         continue;
 218                 }
 219
 220                 FontMetrics const & fm = theFontMetrics(e.font);
 221                 int x1 = fm.pos2x(e.str, range.first - e.pos,
 222                                   e.isRTL(), e.extra);
 223                 int x2 = fm.pos2x(e.str, min(range.last - e.pos + 1,
 224                                                                          pos_type(e.str.length())),
 225                                                                          e.isRTL(), e.extra);
 226                 if (x1 > x2)
 227                         swap(x1, x2);
 228
 229                 pi_.pain.line(int(orig_x) + x1, y, int(orig_x) + x2, y,
 230                               Color_error,
 231                               Painter::line_onoffdash, dotted_line_thickness_);
 232                 pos = range.last + 1;
 233         }
 234 }
 235
 236
 237 void RowPainter::paintStringAndSel(Row::Element const & e)
 238 {
 239         // at least part of text selected?
 240         bool const some_sel = (e.endpos >= row_.sel_beg && e.pos < row_.sel_end)
 241                 || pi_.selected;
 242         // all the text selected?
 243         bool const all_sel = (e.pos >= row_.sel_beg && e.endpos < row_.sel_end)
 244                 || pi_.selected;
 245
 246         if (all_sel) {
 247                 Font copy = e.font;
 248                 copy.fontInfo().setPaintColor(Color_selectiontext);
 249                 pi_.pain.text(int(x_), yo_, e.str, copy, e.extra);
 250         } else if (e.change.changed()) {
 251                 Font copy = e.font;
 252                 copy.fontInfo().setPaintColor(e.change.color());
 253                 pi_.pain.text(int(x_), yo_, e.str, copy, e.extra);
 254         } else if (!some_sel) {
 255                 pi_.pain.text(int(x_), yo_, e.str, e.font, e.extra);
 256         } else {
 257                 pi_.pain.text(int(x_), yo_, e.str, e.font, Color_selectiontext,
 258                                     max(row_.sel_beg, e.pos) - e.pos,
 259                         min(row_.sel_end, e.endpos) - e.pos, e.extra);
 260         }
 261         x_ += e.full_width();
 262 }
 263
 264
 265 void RowPainter::paintChange(double orig_x, Font const & font,
 266                              Change const & change) const
 267 {
 268         if (!change.changed())
 269                 return;
 270         // Calculate 1/3 height of font
 271         FontMetrics const & fm = theFontMetrics(font);
 272         int const y_bar = change.deleted() ? yo_ - fm.maxAscent() / 3
 273                 : yo_ + 2 * solid_line_offset_ + solid_line_thickness_;
 274         pi_.pain.line(int(orig_x), y_bar, int(x_), y_bar,
 275                       change.color(), Painter::line_solid, solid_line_thickness_);
 276 }
 277
 278
 279 void RowPainter::paintChangeBar() const
 280 {
 281         pos_type const start = row_.pos();
 282         pos_type end = row_.endpos();
 283
 284         if (par_.size() == end) {
 285                 // this is the last row of the paragraph;
 286                 // thus, we must also consider the imaginary end-of-par character
 287                 end++;
 288         }
 289
 290         if (start == end || !par_.isChanged(start, end))
 291                 return;
 292
 293         int const height = text_metrics_.isLastRow(pit_, row_)
 294                 ? row_.ascent()
 295                 : row_.height();
 296
 297         pi_.pain.fillRectangle(5, yo_ - row_.ascent(), 3, height, Color_changebar);
 298 }
 299
 300
 301 void RowPainter::paintAppendix() const
 302 {
 303         // only draw the appendix frame once (for the main text)
 304         if (!par_.params().appendix() || !text_.isMainText())
 305                 return;
 306
 307         int y = yo_ - row_.ascent();
 308
 309         if (par_.params().startOfAppendix())
 310                 y += 2 * defaultRowHeight();
 311
 312         pi_.pain.line(1, y, 1, yo_ + row_.height(), Color_appendix);
 313         pi_.pain.line(width_ - 2, y, width_ - 2, yo_ + row_.height(), Color_appendix);
 314 }
 315
 316
 317 void RowPainter::paintDepthBar() const
 318 {
 319         depth_type const depth = par_.getDepth();
 320
 321         if (depth <= 0)
 322                 return;
 323
 324         depth_type prev_depth = 0;
 325         if (!text_metrics_.isFirstRow(pit_, row_)) {
 326                 pit_type pit2 = pit_;
 327                 if (row_.pos() == 0)
 328                         --pit2;
 329                 prev_depth = pars_[pit2].getDepth();
 330         }
 331
 332         depth_type next_depth = 0;
 333         if (!text_metrics_.isLastRow(pit_, row_)) {
 334                 pit_type pit2 = pit_;
 335                 if (row_.endpos() >= pars_[pit2].size())
 336                         ++pit2;
 337                 next_depth = pars_[pit2].getDepth();
 338         }
 339
 340         for (depth_type i = 1; i <= depth; ++i) {
 341                 int const w = nestMargin() / 5;
 342                 int x = int(xo_) + w * i;
 343                 // only consider the changebar space if we're drawing outermost text
 344                 if (text_.isMainText())
 345                         x += changebarMargin();
 346
 347                 int const starty = yo_ - row_.ascent();
 348                 int const h =  row_.height() - 1 - (i - next_depth - 1) * 3;
 349
 350                 pi_.pain.line(x, starty, x, starty + h, Color_depthbar);
 351
 352                 if (i > prev_depth)
 353                         pi_.pain.fillRectangle(x, starty, w, 2, Color_depthbar);
 354                 if (i > next_depth)
 355                         pi_.pain.fillRectangle(x, starty + h, w, 2, Color_depthbar);
 356         }
 357 }
 358
 359
 360 int RowPainter::paintAppendixStart(int y) const
 361 {
 362         FontInfo pb_font = sane_font;
 363         pb_font.setColor(Color_appendix);
 364         pb_font.decSize();
 365
 366         int w = 0;
 367         int a = 0;
 368         int d = 0;
 369
 370         docstring const label = _("Appendix");
 371         theFontMetrics(pb_font).rectText(label, w, a, d);
 372
 373         int const text_start = int(xo_ + (width_ - w) / 2);
 374         int const text_end = text_start + w;
 375
 376         pi_.pain.rectText(text_start, y + d, label, pb_font, Color_none, Color_none);
 377
 378         pi_.pain.line(int(xo_ + 1), y, text_start, y, Color_appendix);
 379         pi_.pain.line(text_end, y, int(xo_ + width_ - 2), y, Color_appendix);
 380
 381         return 3 * defaultRowHeight();
 382 }
 383
 384
 385 void RowPainter::paintTooLargeMarks(bool const left, bool const right) const
 386 {
 387         if (left)
 388                 pi_.pain.line(dotted_line_thickness_, yo_ - row_.ascent(),
 389                                           dotted_line_thickness_, yo_ + row_.descent(),
 390                                           Color_scroll,
 391                                           Painter::line_onoffdash, dotted_line_thickness_);
 392         if (right) {
 393                 int const wwidth = pi_.base.bv->workWidth() - dotted_line_thickness_;
 394                 pi_.pain.line(wwidth, yo_ - row_.ascent(),
 395                                           wwidth, yo_ + row_.descent(),
 396                                           Color_scroll,
 397                                           Painter::line_onoffdash, dotted_line_thickness_);
 398         }
 399 }
 400
 401
 402 void RowPainter::paintFirst() const
 403 {
 404         BufferParams const & bparams = pi_.base.bv->buffer().params();
 405         Layout const & layout = par_.layout();
 406
 407         int y_top = 0;
 408
 409         // start of appendix?
 410         if (par_.params().startOfAppendix())
 411                 y_top += paintAppendixStart(yo_ - row_.ascent() + 2 * defaultRowHeight());
 412
 413         if (bparams.paragraph_separation == BufferParams::ParagraphSkipSeparation
 414                 && pit_ != 0) {
 415                 if (layout.latextype == LATEX_PARAGRAPH
 416                     && !par_.getDepth()) {
 417                         y_top += bparams.getDefSkip().inPixels(*pi_.base.bv);
 418                 } else {
 419                         Layout const & playout = pars_[pit_ - 1].layout();
 420                         if (playout.latextype == LATEX_PARAGRAPH
 421                             && !pars_[pit_ - 1].getDepth()) {
 422                                 // is it right to use defskip here, too? (AS)
 423                                 y_top += bparams.getDefSkip().inPixels(*pi_.base.bv);
 424                         }
 425                 }
 426         }
 427
 428         bool const is_first =
 429                 text_.isFirstInSequence(pit_) || !layout.isParagraphGroup();
 430         //lyxerr << "paintFirst: " << par_.id() << " is_seq: " << is_seq << endl;
 431
 432         if (layout.labelIsInline()
 433                         && (layout.labeltype != LABEL_STATIC || is_first)) {
 434                 paintLabel();
 435         } else if (is_first && layout.labelIsAbove()) {
 436                 paintTopLevelLabel();
 437         }
 438 }
 439
 440
 441 void RowPainter::paintLabel() const
 442 {
 443         docstring const str = par_.labelString();
 444         if (str.empty())
 445                 return;
 446
 447         bool const is_rtl = text_.isRTL(par_);
 448         Layout const & layout = par_.layout();
 449         FontInfo const font = labelFont();
 450         FontMetrics const & fm = theFontMetrics(font);
 451         double x = x_;
 452
 453         if (is_rtl)
 454                 x = width_ - row_.right_margin + fm.width(layout.labelsep);
 455         else
 456                 x = x_ - fm.width(layout.labelsep) - fm.width(str);
 457
 458         pi_.pain.text(int(x), yo_, str, font);
 459 }
 460
 461
 462 void RowPainter::paintTopLevelLabel() const
 463 {
 464         BufferParams const & bparams = pi_.base.bv->buffer().params();
 465         bool const is_rtl = text_.isRTL(par_);
 466         ParagraphParameters const & pparams = par_.params();
 467         Layout const & layout = par_.layout();
 468         FontInfo const font = labelFont();
 469         docstring const str = par_.labelString();
 470         if (str.empty())
 471                 return;
 472
 473         double spacing_val = 1.0;
 474         if (!pparams.spacing().isDefault())
 475                 spacing_val = pparams.spacing().getValue();
 476         else
 477                 spacing_val = bparams.spacing().getValue();
 478
 479         FontMetrics const & fm = theFontMetrics(font);
 480
 481         int const labeladdon = int(fm.maxHeight()
 482                 * layout.spacing.getValue() * spacing_val);
 483
 484         int maxdesc =
 485                 int(fm.maxDescent() * layout.spacing.getValue() * spacing_val
 486                 + (layout.labelbottomsep * defaultRowHeight()));
 487
 488         double x = x_;
 489         if (layout.labeltype == LABEL_CENTERED) {
 490                 x = row_.left_margin + (width_ - row_.left_margin - row_.right_margin) / 2;
 491                 x -= fm.width(str) / 2;
 492         } else if (is_rtl) {
 493                 x = width_ - row_.right_margin - fm.width(str);
 494         }
 495         pi_.pain.text(int(x), yo_ - maxdesc - labeladdon, str, font);
 496 }
 497
 498
 499 /** Check if the current paragraph is the last paragraph in a
 500     proof environment */
 501 static int getEndLabel(pit_type p, Text const & text)
 502 {
 503         ParagraphList const & pars = text.paragraphs();
 504         pit_type pit = p;
 505         depth_type par_depth = pars[p].getDepth();
 506         while (pit != pit_type(pars.size())) {
 507                 Layout const & layout = pars[pit].layout();
 508                 int const endlabeltype = layout.endlabeltype;
 509
 510                 if (endlabeltype != END_LABEL_NO_LABEL) {
 511                         if (p + 1 == pit_type(pars.size()))
 512                                 return endlabeltype;
 513
 514                         depth_type const next_depth =
 515                                 pars[p + 1].getDepth();
 516                         if (par_depth > next_depth ||
 517                             (par_depth == next_depth && layout != pars[p + 1].layout()))
 518                                 return endlabeltype;
 519                         break;
 520                 }
 521                 if (par_depth == 0)
 522                         break;
 523                 pit = text.outerHook(pit);
 524                 if (pit != pit_type(pars.size()))
 525                         par_depth = pars[pit].getDepth();
 526         }
 527         return END_LABEL_NO_LABEL;
 528 }
 529
 530
 531 void RowPainter::paintLast()
 532 {
 533         bool const is_rtl = text_.isRTL(par_);
 534         int const endlabel = getEndLabel(pit_, text_);
 535
 536         // paint imaginary end-of-paragraph character
 537
 538         Change const & change = par_.lookupChange(par_.size());
 539         if (change.changed()) {
 540                 FontMetrics const & fm =
 541                         theFontMetrics(pi_.base.bv->buffer().params().getFont());
 542                 int const length = fm.maxAscent() / 2;
 543                 Color col = change.color();
 544
 545                 pi_.pain.line(int(x_) + 1, yo_ + 2, int(x_) + 1, yo_ + 2 - length, col,
 546                            Painter::line_solid, 3);
 547
 548                 if (change.deleted()) {
 549                         pi_.pain.line(int(x_) + 1 - length, yo_ + 2, int(x_) + 1 + length,
 550                                 yo_ + 2, col, Painter::line_solid, 3);
 551                 } else {
 552                         pi_.pain.line(int(x_) + 1 - length, yo_ + 2, int(x_) + 1,
 553                                 yo_ + 2, col, Painter::line_solid, 3);
 554                 }
 555         }
 556
 557         // draw an endlabel
 558
 559         switch (endlabel) {
 560         case END_LABEL_BOX:
 561         case END_LABEL_FILLED_BOX: {
 562                 FontInfo const font = labelFont();
 563                 FontMetrics const & fm = theFontMetrics(font);
 564                 int const size = int(0.75 * fm.maxAscent());
 565                 int const y = yo_ - size;
 566                 int const max_row_width = width_ - size - Inset::TEXT_TO_INSET_OFFSET;
 567                 int x = is_rtl ? nestMargin() + changebarMargin()
 568                         : max_row_width - row_.right_margin;
 569
 570                 // If needed, move the box a bit to avoid overlapping with text.
 571                 int const rem = max_row_width - row_.width();
 572                 if (rem <= 0)
 573                         x += is_rtl ? rem : - rem;
 574
 575                 if (endlabel == END_LABEL_BOX)
 576                         pi_.pain.rectangle(x, y, size, size, Color_eolmarker);
 577                 else
 578                         pi_.pain.fillRectangle(x, y, size, size, Color_eolmarker);
 579                 break;
 580         }
 581
 582         case END_LABEL_STATIC: {
 583                 FontInfo const font = labelFont();
 584                 FontMetrics const & fm = theFontMetrics(font);
 585                 docstring const & str = par_.layout().endlabelstring();
 586                 double const x = is_rtl ? x_ - fm.width(str) : x_;
 587                 pi_.pain.text(int(x), yo_, str, font);
 588                 break;
 589         }
 590
 591         case END_LABEL_NO_LABEL:
 592                 break;
 593         }
 594 }
 595
 596
 597 void RowPainter::paintOnlyInsets()
 598 {
 599         Row::const_iterator cit = row_.begin();
 600         Row::const_iterator const & end = row_.end();
 601         for ( ; cit != end ; ++cit) {
 602                 Row::Element const & e = *cit;
 603                 if (e.type == Row::INSET) {
 604                         // If outer row has changed, nested insets are repainted completely.
 605                         pi_.base.bv->coordCache().insets().add(e.inset, int(x_), yo_);
 606                         bool const nested_inset =
 607                                 (e.inset->asInsetMath() && !e.inset->asInsetMath()->asMacroTemplate())
 608                                 || e.inset->asInsetText() || e.inset->asInsetTabular();
 609                         if (!nested_inset) {
 610                                 x_ += e.full_width();
 611                                 continue;
 612                         }
 613                         paintInset(e.inset, e.font, e.change, e.pos);
 614                 } else
 615                         x_ += e.full_width();
 616         }
 617 }
 618
 619
 620 void RowPainter::paintText()
 621 {
 622         Row::const_iterator cit = row_.begin();
 623         Row::const_iterator const & end = row_.end();
 624         for ( ; cit != end ; ++cit) {
 625                 double const orig_x = x_;
 626                 Row::Element const & e = *cit;
 627                 int foreign_descent = 0;
 628
 629                 switch (e.type) {
 630                 case Row::STRING:
 631                 case Row::VIRTUAL:
 632                         paintStringAndSel(e);
 633
 634                         // Paint the spelling marks if enabled.
 635                         if (lyxrc.spellcheck_continuously && pi_.do_spellcheck)
 636                                 paintMisspelledMark(orig_x, e);
 637                         break;
 638                 case Row::INSET: {
 639                         // If outer row has changed, nested insets are repaint completely.
 640                         pi_.base.bv->coordCache().insets().add(e.inset, int(x_), yo_);
 641                         paintInset(e.inset, e.font, e.change, e.pos);
 642                         foreign_descent = e.dim.descent();
 643                 }
 644                         break;
 645                 case Row::SPACE:
 646                         pi_.pain.textDecoration(e.font.fontInfo(), int(x_), yo_, int(e.full_width()));
 647                         x_ += e.full_width();
 648                 }
 649
 650                 // The line that indicates word in a different language
 651                 paintForeignMark(orig_x, e.font.language(), foreign_descent);
 652
 653                 // change tracking (not for insets that track their own changes)
 654                 if (e.type != Row::INSET || ! e.inset->canTrackChanges())
 655                         paintChange(orig_x, e.font, e.change);
 656         }
 657 }
 658
 659
 660 void RowPainter::paintSelection() const
 661 {
 662         if (!row_.selection())
 663                 return;
 664         Cursor const & curs = pi_.base.bv->cursor();
 665         DocIterator beg = curs.selectionBegin();
 666         beg.pit() = pit_;
 667         beg.pos() = row_.sel_beg;
 668
 669         DocIterator end = curs.selectionEnd();
 670         end.pit() = pit_;
 671         end.pos() = row_.sel_end;
 672
 673         bool const begin_boundary = beg.pos() >= row_.endpos();
 674         bool const end_boundary = row_.sel_end == row_.endpos();
 675
 676         DocIterator cur = beg;
 677         cur.boundary(begin_boundary);
 678         int x1 = text_metrics_.cursorX(beg.top(), begin_boundary);
 679         int x2 = text_metrics_.cursorX(end.top(), end_boundary);
 680         int const y1 = yo_ - row_.ascent();
 681         int const y2 = y1 + row_.height();
 682
 683         int const rm = text_.isMainText() ? pi_.base.bv->rightMargin() : 0;
 684         int const lm = text_.isMainText() ? pi_.base.bv->leftMargin() : 0;
 685
 686         // draw the margins
 687         if (row_.begin_margin_sel) {
 688                 if (text_.isRTL(beg.paragraph())) {
 689                         pi_.pain.fillRectangle(int(xo_ + x1), y1,
 690                                 text_metrics_.width() - rm - x1, y2 - y1, Color_selection);
 691                 } else {
 692                         pi_.pain.fillRectangle(int(xo_ + lm), y1, x1 - lm, y2 - y1,
 693                                 Color_selection);
 694                 }
 695         }
 696
 697         if (row_.end_margin_sel) {
 698                 if (text_.isRTL(beg.paragraph())) {
 699                         pi_.pain.fillRectangle(int(xo_ + lm), y1, x2 - lm, y2 - y1,
 700                                 Color_selection);
 701                 } else {
 702                         pi_.pain.fillRectangle(int(xo_ + x2), y1, text_metrics_.width() - rm - x2,
 703                                 y2 - y1, Color_selection);
 704                 }
 705         }
 706
 707         // if we are on a boundary from the beginning, it's probably
 708         // a RTL boundary and we jump to the other side directly as this
 709         // segement is 0-size and confuses the logic below
 710         if (cur.boundary())
 711                 cur.boundary(false);
 712
 713         // go through row and draw from RTL boundary to RTL boundary
 714         while (cur < end) {
 715                 bool draw_now = false;
 716
 717                 // simplified cursorForward code below which does not
 718                 // descend into insets and which does not go into the
 719                 // next line. Compare the logic with the original cursorForward
 720
 721                 // if left of boundary -> just jump to right side, but
 722                 // for RTL boundaries don't, because: abc|DDEEFFghi -> abcDDEEF|Fghi
 723                 if (cur.boundary()) {
 724                         cur.boundary(false);
 725                 }       else if (text_metrics_.isRTLBoundary(cur.pit(), cur.pos() + 1)) {
 726                         // in front of RTL boundary -> Stay on this side of the boundary
 727                         // because:  ab|cDDEEFFghi -> abc|DDEEFFghi
 728                         ++cur.pos();
 729                         cur.boundary(true);
 730                         draw_now = true;
 731                 } else {
 732                         // move right
 733                         ++cur.pos();
 734
 735                         // line end?
 736                         if (cur.pos() == row_.endpos())
 737                                 cur.boundary(true);
 738                 }
 739
 740                 if (x1 == -1) {
 741                         // the previous segment was just drawn, now the next starts
 742                         x1 = text_metrics_.cursorX(cur.top(), cur.boundary());
 743                 }
 744
 745                 if (!(cur < end) || draw_now) {
 746                         x2 = text_metrics_.cursorX(cur.top(), cur.boundary());
 747                         pi_.pain.fillRectangle(int(xo_ + min(x1, x2)), y1, abs(x2 - x1),
 748                                 y2 - y1, Color_selection);
 749
 750                         // reset x1, so it is set again next round (which will be on the
 751                         // right side of a boundary or at the selection end)
 752                         x1 = -1;
 753                 }
 754         }
 755 }
 756
 757
 758 } // namespace lyx