3 * This file is part of LyX, the document processor.
4 * Licence details can be found in the file COPYING.
9 * Full author contact details are available in file CREDITS.
14 #include "rowpainter.h"
17 #include "coordcache.h"
20 #include "bufferparams.h"
21 #include "BufferView.h"
28 #include "metricsinfo.h"
29 #include "paragraph.h"
30 #include "ParagraphMetrics.h"
31 #include "paragraph_funcs.h"
32 #include "ParagraphParameters.h"
33 #include "TextMetrics.h"
36 #include "frontends/FontMetrics.h"
37 #include "frontends/Painter.h"
39 #include "insets/insettext.h"
41 #include "support/textutils.h"
43 #include <boost/crc.hpp>
48 using frontend::Painter;
49 using frontend::FontMetrics;
58 /// Flag: do a full redraw of inside text of inset
59 /// Working variable indicating a full screen refresh
63 * A class used for painting an individual row of text.
67 /// initialise and run painter
68 RowPainter(PainterInfo & pi, LyXText const & text,
69 pit_type pit, Row const & row, int x, int y);
71 // paint various parts
74 void paintChangeBar();
78 int maxWidth() { return max_width_; }
81 void paintForeignMark(double orig_x, LyXFont const & font, int desc = 0);
82 void paintHebrewComposeChar(pos_type & vpos, LyXFont const & font);
83 void paintArabicComposeChar(pos_type & vpos, LyXFont const & font);
84 void paintChars(pos_type & vpos, LyXFont const & font,
85 bool hebrew, bool arabic);
86 int paintAppendixStart(int y);
87 void paintFromPos(pos_type & vpos);
88 void paintInset(pos_type const pos, LyXFont const & font);
90 /// return left margin
91 int leftMargin() const;
93 /// return the label font for this row
94 LyXFont const getLabelFont() const;
96 /// bufferview to paint on
102 /// LyXText for the row
103 LyXText const & text_;
104 TextMetrics & text_metrics_;
105 ParagraphList const & pars_;
112 Paragraph const & par_;
113 ParagraphMetrics const & pm_;
116 /// is row erased? (change tracking)
121 int const yo_; // current baseline
130 RowPainter::RowPainter(PainterInfo & pi,
131 LyXText const & text, pit_type pit, Row const & row, int x, int y)
132 : bv_(*pi.base.bv), pain_(pi.pain), text_(text),
133 text_metrics_(pi.base.bv->textMetrics(&text)),
134 pars_(text.paragraphs()),
135 row_(row), pit_(pit), par_(text.paragraphs()[pit]),
136 pm_(text_metrics_.parMetrics(pit)),
137 max_width_(bv_.workWidth()),
139 xo_(x), yo_(y), width_(text_metrics_.width())
141 RowMetrics m = text_metrics_.computeRowMetrics(pit_, row_);
144 //lyxerr << "RowPainter: x: " << x_ << " xo: " << xo_ << " yo: " << yo_ << endl;
147 separator_ = m.separator;
149 label_hfill_ = m.label_hfill;
151 BOOST_ASSERT(pit >= 0);
152 BOOST_ASSERT(pit < int(text.paragraphs().size()));
156 LyXFont const RowPainter::getLabelFont() const
158 return text_.getLabelFont(*bv_.buffer(), par_);
162 int RowPainter::leftMargin() const
164 return text_.leftMargin(*bv_.buffer(), max_width_, pit_, row_.pos());
168 // If you want to debug inset metrics uncomment the following line:
169 // #define DEBUG_METRICS
170 // This draws green lines around each inset.
173 void RowPainter::paintInset(pos_type const pos, LyXFont const & font)
175 InsetBase const * inset = par_.getInset(pos);
177 PainterInfo pi(const_cast<BufferView *>(&bv_), pain_);
178 // FIXME: We should always use font, see documentation of
179 // noFontChange() in insetbase.h.
180 pi.base.font = inset->noFontChange() ?
181 bv_.buffer()->params().getFont() :
183 pi.ltr_pos = (text_.bidi.level(pos) % 2 == 0);
184 pi.erased_ = erased_ || par_.isDeleted(pos);
186 int const x1 = int(x_);
188 bv_.coordCache().insets().add(inset, int(x_), yo_);
189 InsetText const * const in = inset->asTextInset();
190 // non-wide insets are painted completely. Recursive
191 bool tmp = refreshInside;
192 if (!in || !in->wide()) {
193 refreshInside = true;
194 LYXERR(Debug::PAINTING) << endl << "Paint inset fully" << endl;
197 inset->drawSelection(pi, int(x_), yo_);
198 inset->draw(pi, int(x_), yo_);
200 x_ += inset->width();
203 BOOST_ASSERT(max_witdh_ > 0);
204 int right_margin = text_metrics_.rightMargin(pm_);
205 int const w = max_witdh_ - leftMargin() - right_margin;
206 MetricsInfo mi(&bv_, font, w);
207 inset->metrics(mi, dim);
208 if (inset->width() > dim.wid)
209 lyxerr << "Error: inset " << to_ascii(inset->getInsetName())
210 << " draw width " << inset->width()
211 << "> metrics width " << dim.wid << "." << std::endl;
212 if (inset->ascent() > dim.asc)
213 lyxerr << "Error: inset " << to_ascii(inset->getInsetName())
214 << " draw ascent " << inset->ascent()
215 << "> metrics ascent " << dim.asc << "." << std::endl;
216 if (inset->descent() > dim.des)
217 lyxerr << "Error: inset " << to_ascii(inset->getInsetName())
218 << " draw ascent " << inset->descent()
219 << "> metrics descent " << dim.des << "." << std::endl;
220 BOOST_ASSERT(inset->width() <= dim.wid);
221 BOOST_ASSERT(inset->ascent() <= dim.asc);
222 BOOST_ASSERT(inset->descent() <= dim.des);
223 int const x2 = x1 + dim.wid;
224 int const y1 = yo_ + dim.des;
225 int const y2 = yo_ - dim.asc;
226 pi.pain.line(x1, y1, x1, y2, LColor::green);
227 pi.pain.line(x1, y1, x2, y1, LColor::green);
228 pi.pain.line(x2, y1, x2, y2, LColor::green);
229 pi.pain.line(x1, y2, x2, y2, LColor::green);
234 void RowPainter::paintHebrewComposeChar(pos_type & vpos, LyXFont const & font)
236 pos_type pos = text_.bidi.vis2log(vpos);
241 char_type c = par_.getChar(pos);
245 int const width = theFontMetrics(font).width(c);
248 for (pos_type i = pos - 1; i >= 0; --i) {
250 if (!Encodings::isComposeChar_hebrew(c)) {
251 if (isPrintableNonspace(c)) {
252 int const width2 = text_.singleWidth(par_, i, c,
253 text_.getFont(*bv_.buffer(), par_, i));
254 dx = (c == 0x05e8 || // resh
255 c == 0x05d3) // dalet
257 : (width2 - width) / 2;
264 pain_.text(int(x_) + dx, yo_, str, font);
268 void RowPainter::paintArabicComposeChar(pos_type & vpos, LyXFont const & font)
270 pos_type pos = text_.bidi.vis2log(vpos);
274 char_type c = par_.getChar(pos);
275 c = par_.transformChar(c, pos);
279 int const width = theFontMetrics(font).width(c);
282 for (pos_type i = pos - 1; i >= 0; --i) {
284 if (!Encodings::isComposeChar_arabic(c)) {
285 if (isPrintableNonspace(c)) {
286 int const width2 = text_.singleWidth(par_, i, c,
287 text_.getFont(*bv_.buffer(), par_, i));
288 dx = (width2 - width) / 2;
294 pain_.text(int(x_) + dx, yo_, str, font);
298 void RowPainter::paintChars(pos_type & vpos, LyXFont const & font,
299 bool hebrew, bool arabic)
301 // This method takes up 70% of time when typing
302 pos_type pos = text_.bidi.vis2log(vpos);
303 pos_type const end = row_.endpos();
304 FontSpan const font_span = par_.fontSpan(pos);
305 Change::Type const prev_change = par_.lookupChange(pos).type;
308 std::vector<char_type> str;
310 str.push_back(par_.getChar(pos));
313 char_type c = str[0];
314 str[0] = par_.transformChar(c, pos);
317 // collect as much similar chars as we can
318 for (++vpos ; vpos < end ; ++vpos) {
319 pos = text_.bidi.vis2log(vpos);
320 if (pos < font_span.first || pos > font_span.last)
323 if (prev_change != par_.lookupChange(pos).type)
326 char_type c = par_.getChar(pos);
328 if (!isPrintableNonspace(c))
331 /* Because we do our own bidi, at this point the strings are
332 * already in visual order. However, Qt also applies its own
333 * bidi algorithm to strings that it paints to the screen.
334 * Therefore, if we were to paint Hebrew/Arabic words as a
335 * single string, the letters in the words would get reversed
336 * again. In order to avoid that, we don't collect Hebrew/
337 * Arabic characters, but rather paint them one at a time.
338 * See also http://thread.gmane.org/gmane.editors.lyx.devel/79740
343 /* FIXME: these checks are irrelevant, since 'arabic' and
344 * 'hebrew' alone are already going to trigger a break.
345 * However, this should not be removed completely, because
346 * if an alternative solution is found which allows grouping
347 * of arabic and hebrew characters, then these breaks may have
350 if (arabic && Encodings::isComposeChar_arabic(c))
353 if (hebrew && Encodings::isComposeChar_hebrew(c))
358 c = par_.transformChar(c, pos);
359 /* see comment in hebrew, explaining why we break */
366 docstring s(&str[0], str.size());
368 if (prev_change != Change::UNCHANGED) {
370 if (prev_change == Change::DELETED) {
371 copy.setColor(LColor::strikeout);
372 } else if (prev_change == Change::INSERTED) {
373 copy.setColor(LColor::newtext);
375 x_ += pain_.text(int(x_), yo_, s, copy);
377 x_ += pain_.text(int(x_), yo_, s, font);
382 void RowPainter::paintForeignMark(double orig_x, LyXFont const & font, int desc)
384 if (!lyxrc.mark_foreign_language)
386 if (font.language() == latex_language)
388 if (font.language() == bv_.buffer()->params().language)
391 int const y = yo_ + 1 + desc;
392 pain_.line(int(orig_x), y, int(x_), y, LColor::language);
396 void RowPainter::paintFromPos(pos_type & vpos)
398 pos_type const pos = text_.bidi.vis2log(vpos);
399 LyXFont orig_font = text_.getFont(*bv_.buffer(), par_, pos);
401 double const orig_x = x_;
403 if (par_.isInset(pos)) {
404 paintInset(pos, orig_font);
406 paintForeignMark(orig_x, orig_font,
407 par_.getInset(pos)->descent());
411 // usual characters, no insets
412 char_type const c = par_.getChar(pos);
414 // special case languages
415 std::string const & lang = orig_font.language()->lang();
416 bool const hebrew = lang == "hebrew";
417 bool const arabic = lang == "arabic";
419 // draw as many chars as we can
420 if ((!hebrew && !arabic)
421 || (hebrew && !Encodings::isComposeChar_hebrew(c))
422 || (arabic && !Encodings::isComposeChar_arabic(c))) {
423 paintChars(vpos, orig_font, hebrew, arabic);
425 paintHebrewComposeChar(vpos, orig_font);
427 paintArabicComposeChar(vpos, orig_font);
430 paintForeignMark(orig_x, orig_font);
434 void RowPainter::paintChangeBar()
436 pos_type const start = row_.pos();
437 pos_type end = row_.endpos();
439 if (par_.size() == end) {
440 // this is the last row of the paragraph;
441 // thus, we must also consider the imaginary end-of-par character
445 if (start == end || !par_.isChanged(start, end))
448 int const height = text_.isLastRow(pit_, row_)
452 pain_.fillRectangle(5, yo_ - row_.ascent(), 3, height, LColor::changebar);
456 void RowPainter::paintAppendix()
458 if (!par_.params().appendix())
461 int y = yo_ - row_.ascent();
463 if (par_.params().startOfAppendix())
464 y += 2 * defaultRowHeight();
466 pain_.line(1, y, 1, yo_ + row_.height(), LColor::appendix);
467 pain_.line(width_ - 2, y, width_ - 2, yo_ + row_.height(), LColor::appendix);
471 void RowPainter::paintDepthBar()
473 depth_type const depth = par_.getDepth();
478 depth_type prev_depth = 0;
479 if (!text_.isFirstRow(pit_, row_)) {
480 pit_type pit2 = pit_;
483 prev_depth = pars_[pit2].getDepth();
486 depth_type next_depth = 0;
487 if (!text_.isLastRow(pit_, row_)) {
488 pit_type pit2 = pit_;
489 if (row_.endpos() >= pars_[pit2].size())
491 next_depth = pars_[pit2].getDepth();
494 for (depth_type i = 1; i <= depth; ++i) {
495 int const w = nestMargin() / 5;
496 int x = int(xo_) + w * i;
497 // only consider the changebar space if we're drawing outermost text
498 if (text_.isMainText(*bv_.buffer()))
499 x += changebarMargin();
501 int const starty = yo_ - row_.ascent();
502 int const h = row_.height() - 1 - (i - next_depth - 1) * 3;
504 pain_.line(x, starty, x, starty + h, LColor::depthbar);
507 pain_.fillRectangle(x, starty, w, 2, LColor::depthbar);
509 pain_.fillRectangle(x, starty + h, w, 2, LColor::depthbar);
514 int RowPainter::paintAppendixStart(int y)
517 pb_font.setColor(LColor::appendix);
524 docstring const label = _("Appendix");
525 theFontMetrics(pb_font).rectText(label, w, a, d);
527 int const text_start = int(xo_ + (width_ - w) / 2);
528 int const text_end = text_start + w;
530 pain_.rectText(text_start, y + d, label, pb_font, LColor::none, LColor::none);
532 pain_.line(int(xo_ + 1), y, text_start, y, LColor::appendix);
533 pain_.line(text_end, y, int(xo_ + width_ - 2), y, LColor::appendix);
535 return 3 * defaultRowHeight();
539 void RowPainter::paintFirst()
541 ParagraphParameters const & parparams = par_.params();
545 // start of appendix?
546 if (parparams.startOfAppendix())
547 y_top += paintAppendixStart(yo_ - row_.ascent() + 2 * defaultRowHeight());
549 Buffer const & buffer = *bv_.buffer();
551 LyXLayout_ptr const & layout = par_.layout();
553 if (buffer.params().paragraph_separation == BufferParams::PARSEP_SKIP) {
555 if (layout->latextype == LATEX_PARAGRAPH
556 && !par_.getDepth()) {
557 y_top += buffer.params().getDefSkip().inPixels(bv_);
559 LyXLayout_ptr const & playout = pars_[pit_ - 1].layout();
560 if (playout->latextype == LATEX_PARAGRAPH
561 && !pars_[pit_ - 1].getDepth()) {
562 // is it right to use defskip here, too? (AS)
563 y_top += buffer.params().getDefSkip().inPixels(bv_);
569 bool const is_rtl = text_.isRTL(buffer, par_);
570 bool const is_seq = isFirstInSequence(pit_, text_.paragraphs());
571 //lyxerr << "paintFirst: " << par_.id() << " is_seq: " << is_seq << std::endl;
573 // should we print a label?
574 if (layout->labeltype >= LABEL_STATIC
575 && (layout->labeltype != LABEL_STATIC
576 || layout->latextype != LATEX_ENVIRONMENT
579 LyXFont const font = getLabelFont();
580 FontMetrics const & fm = theFontMetrics(font);
582 docstring const str = par_.getLabelstring();
586 // this is special code for the chapter layout. This is
587 // printed in an extra row and has a pagebreak at
589 if (layout->counter == "chapter") {
590 double spacing_val = 1.0;
591 if (!parparams.spacing().isDefault()) {
592 spacing_val = parparams.spacing().getValue();
594 spacing_val = buffer.params().spacing().getValue();
597 int const labeladdon = int(fm.maxHeight() * layout->spacing.getValue() * spacing_val);
599 int const maxdesc = int(fm.maxDescent() * layout->spacing.getValue() * spacing_val)
600 + int(layout->parsep) * defaultRowHeight();
603 x = width_ - leftMargin() -
607 pain_.text(int(x), yo_ - maxdesc - labeladdon, str, font);
610 docstring lab = from_utf8(layout->labelsep);
612 x = width_ - leftMargin()
615 x = x_ - fm.width(lab)
619 pain_.text(int(x), yo_, str, font);
623 // the labels at the top of an environment.
624 // More or less for bibliography
626 (layout->labeltype == LABEL_TOP_ENVIRONMENT ||
627 layout->labeltype == LABEL_BIBLIO ||
628 layout->labeltype == LABEL_CENTERED_TOP_ENVIRONMENT)) {
629 LyXFont font = getLabelFont();
630 if (!par_.getLabelstring().empty()) {
631 docstring const str = par_.getLabelstring();
632 double spacing_val = 1.0;
633 if (!parparams.spacing().isDefault())
634 spacing_val = parparams.spacing().getValue();
636 spacing_val = buffer.params().spacing().getValue();
638 FontMetrics const & fm = theFontMetrics(font);
640 int const labeladdon = int(fm.maxHeight()
641 * layout->spacing.getValue() * spacing_val);
644 int(fm.maxDescent() * layout->spacing.getValue() * spacing_val
645 + (layout->labelbottomsep * defaultRowHeight()));
648 if (layout->labeltype == LABEL_CENTERED_TOP_ENVIRONMENT) {
651 x += (width_ - text_metrics_.rightMargin(pm_) - leftMargin()) / 2;
652 x -= fm.width(str) / 2;
654 x = width_ - leftMargin() - fm.width(str);
656 pain_.text(int(x), yo_ - maxdesc - labeladdon, str, font);
662 void RowPainter::paintLast()
664 bool const is_rtl = text_.isRTL(*bv_.buffer(), par_);
665 int const endlabel = getEndLabel(pit_, text_.paragraphs());
667 // paint imaginary end-of-paragraph character
669 if (par_.isInserted(par_.size()) || par_.isDeleted(par_.size())) {
670 FontMetrics const & fm = theFontMetrics(bv_.buffer()->params().getFont());
671 int const length = fm.maxAscent() / 2;
672 LColor::color col = par_.isInserted(par_.size()) ? LColor::newtext : LColor::strikeout;
674 pain_.line(int(x_) + 1, yo_ + 2, int(x_) + 1, yo_ + 2 - length, col,
675 Painter::line_solid, Painter::line_thick);
676 pain_.line(int(x_) + 1 - length, yo_ + 2, int(x_) + 1, yo_ + 2, col,
677 Painter::line_solid, Painter::line_thick);
684 case END_LABEL_FILLED_BOX: {
685 LyXFont const font = getLabelFont();
686 FontMetrics const & fm = theFontMetrics(font);
687 int const size = int(0.75 * fm.maxAscent());
688 int const y = yo_ - size;
689 int x = is_rtl ? nestMargin() + changebarMargin() : width_ - size;
691 if (width_ - int(row_.width()) <= size)
692 x += (size - width_ + row_.width() + 1) * (is_rtl ? -1 : 1);
694 if (endlabel == END_LABEL_BOX)
695 pain_.rectangle(x, y, size, size, LColor::eolmarker);
697 pain_.fillRectangle(x, y, size, size, LColor::eolmarker);
701 case END_LABEL_STATIC: {
702 LyXFont font = getLabelFont();
703 FontMetrics const & fm = theFontMetrics(font);
704 docstring const & str = par_.layout()->endlabelstring();
705 double const x = is_rtl ?
707 : - text_metrics_.rightMargin(pm_) - row_.width();
708 pain_.text(int(x), yo_, str, font);
712 case END_LABEL_NO_LABEL:
718 void RowPainter::paintText()
720 pos_type const end = row_.endpos();
721 pos_type body_pos = par_.beginOfBody();
723 (body_pos > end || !par_.isLineSeparator(body_pos - 1))) {
727 LyXLayout_ptr const & layout = par_.layout();
729 bool running_strikeout = false;
730 bool is_struckout = false;
731 int last_strikeout_x = 0;
733 // Use font span to speed things up, see below
736 Buffer const & buffer = *bv_.buffer();
738 for (pos_type vpos = row_.pos(); vpos < end; ) {
739 if (x_ > bv_.workWidth())
742 pos_type const pos = text_.bidi.vis2log(vpos);
744 if (pos >= par_.size()) {
749 // Use font span to speed things up, see above
750 if (vpos < font_span.first || vpos > font_span.last) {
751 font_span = par_.fontSpan(vpos);
752 font = text_.getFont(buffer, par_, vpos);
755 const int width_pos =
756 text_.singleWidth(par_, pos, par_.getChar(pos), font);
758 if (x_ + width_pos < 0) {
764 is_struckout = par_.isDeleted(pos);
766 if (is_struckout && !running_strikeout) {
767 running_strikeout = true;
768 last_strikeout_x = int(x_);
771 bool const highly_editable_inset = par_.isInset(pos)
772 && isHighlyEditableInset(par_.getInset(pos));
774 // If we reach the end of a struck out range, paint it.
775 // We also don't paint across things like tables
776 if (running_strikeout && (highly_editable_inset || !is_struckout)) {
777 // Calculate 1/3 height of the buffer's default font
778 FontMetrics const & fm
779 = theFontMetrics(bv_.buffer()->params().getFont());
780 int const middle = yo_ - fm.maxAscent() / 3;
781 pain_.line(last_strikeout_x, middle, int(x_), middle,
782 LColor::strikeout, Painter::line_solid, Painter::line_thin);
783 running_strikeout = false;
786 if (body_pos > 0 && pos == body_pos - 1) {
788 int const lwidth = theFontMetrics(getLabelFont())
789 .width(from_utf8(layout->labelsep));
791 x_ += label_hfill_ + lwidth - width_pos;
794 if (par_.isHfill(pos)) {
798 int const y1 = y0 - defaultRowHeight() / 2;
800 pain_.line(int(x_), y1, int(x_), y0, LColor::added_space);
802 if (par_.hfillExpansion(row_, pos)) {
803 int const y2 = (y0 + y1) / 2;
805 if (pos >= body_pos) {
806 pain_.line(int(x_), y2, int(x_ + hfill_), y2,
808 Painter::line_onoffdash);
811 pain_.line(int(x_), y2, int(x_ + label_hfill_), y2,
813 Painter::line_onoffdash);
816 pain_.line(int(x_), y1, int(x_), y0, LColor::added_space);
820 } else if (par_.isSeparator(pos)) {
830 // if we reach the end of a struck out range, paint it
831 if (running_strikeout) {
832 // calculate 1/3 height of the buffer's default font
833 FontMetrics const & fm
834 = theFontMetrics(bv_.buffer()->params().getFont());
835 int const middle = yo_ - fm.maxAscent() / 3;
836 pain_.line(last_strikeout_x, middle, int(x_), middle,
837 LColor::strikeout, Painter::line_solid, Painter::line_thin);
838 running_strikeout = false;
843 bool CursorOnRow(PainterInfo & pi, pit_type const pit,
844 RowList::const_iterator rit, LyXText const & text)
846 // Is there a cursor on this row (or inside inset on row)
847 LCursor & cur = pi.base.bv->cursor();
848 for (size_type d = 0; d < cur.depth(); ++d) {
849 CursorSlice const & sl = cur[d];
850 if (sl.text() == &text
852 && sl.pos() >= rit->pos()
853 && sl.pos() <= rit->endpos())
860 bool innerCursorOnRow(PainterInfo & pi, pit_type pit,
861 RowList::const_iterator rit, LyXText const & text)
863 // Is there a cursor inside an inset on this row, and is this inset
864 // the only "character" on this row
865 LCursor & cur = pi.base.bv->cursor();
866 if (rit->pos() + 1 != rit->endpos())
868 for (size_type d = 0; d < cur.depth(); d++) {
869 CursorSlice const & sl = cur[d];
870 if (sl.text() == &text
872 && sl.pos() == rit->pos())
873 return d < cur.depth() - 1;
880 (PainterInfo & pi, LyXText const & text, pit_type pit, int x, int y,
883 // lyxerr << " paintPar: pit: " << pit << " at y: " << y << endl;
884 int const ww = pi.base.bv->workHeight();
886 pi.base.bv->coordCache().parPos()[&text][pit] = Point(x, y);
888 Paragraph const & par = text.paragraphs()[pit];
889 ParagraphMetrics const & pm = pi.base.bv->parMetrics(&text, pit);
890 if (pm.rows().empty())
893 RowList::const_iterator const rb = pm.rows().begin();
894 RowList::const_iterator const re = pm.rows().end();
898 for (RowList::const_iterator rit = rb; rit != re; ++rit, ++rowno) {
900 // Allow setting of refreshInside for nested insets in
902 bool tmp = refreshInside;
904 // Row signature; has row changed since last paint?
905 bool row_has_changed = pm.rowChangeStatus()[rowno];
907 bool cursor_on_row = CursorOnRow(pi, pit, rit, text);
908 bool in_inset_alone_on_row = innerCursorOnRow(pi, pit, rit,
911 (par.getAlign() == LYX_ALIGN_LEFT ||
912 par.getAlign() == LYX_ALIGN_BLOCK);
914 // If this is the only object on the row, we can make it wide
916 // FIXME: there is a const_cast here because paintPar() is not supposed
917 // to touch the paragraph contents. So either we move this "wide"
918 // property out of InsetText or we localize the feature to the painting
920 for (pos_type i = rit->pos() ; i != rit->endpos(); ++i) {
921 InsetBase const * const in = par.getInset(i);
923 InsetText * t = const_cast<InsetText *>(in->asTextInset());
925 t->setWide(in_inset_alone_on_row && leftEdgeFixed);
929 // If selection is on, the current row signature differs
930 // from cache, or cursor is inside an inset _on this row_,
931 // then paint the row
932 if (repaintAll || row_has_changed || cursor_on_row) {
933 bool const inside = (y + rit->descent() >= 0
934 && y - rit->ascent() < ww);
935 // it is not needed to draw on screen if we are not inside.
936 pi.pain.setDrawingEnabled(inside);
937 RowPainter rp(pi, text, pit, *rit, x, y);
938 // Clear background of this row
939 // (if paragraph background was not cleared)
941 (!(in_inset_alone_on_row && leftEdgeFixed)
942 || row_has_changed)) {
943 pi.pain.fillRectangle(x, y - rit->ascent(),
944 rp.maxWidth(), rit->height(),
945 text.backgroundColor());
946 // If outer row has changed, force nested
947 // insets to repaint completely
949 refreshInside = true;
952 // Instrumentation for testing row cache (see also
954 if (lyxerr.debugging(Debug::PAINTING)) {
955 if (text.isMainText(*pi.base.bv->buffer()))
956 LYXERR(Debug::PAINTING) << "#";
958 LYXERR(Debug::PAINTING) << "[" <<
959 repaintAll << row_has_changed <<
960 cursor_on_row << "]";
972 // Restore, see above
975 // Re-enable screen drawing for future use of the painter.
976 pi.pain.setDrawingEnabled(true);
978 LYXERR(Debug::PAINTING) << "." << endl;
984 void paintText(BufferView & bv,
987 BOOST_ASSERT(bv.buffer());
988 Buffer const & buffer = *bv.buffer();
989 LyXText & text = buffer.text();
990 bool const select = bv.cursor().selection();
991 ViewMetricsInfo const & vi = bv.viewMetricsInfo();
993 PainterInfo pi(const_cast<BufferView *>(&bv), pain);
994 // Should the whole screen, including insets, be refreshed?
995 // FIXME: We should also distinguish DecorationUpdate to avoid text
996 // drawing if possible. This is not possible to do easily right now
997 // because of the single backing pixmap.
998 bool repaintAll = select || vi.update_strategy != SingleParUpdate;
1001 // Clear background (if not delegated to rows)
1002 pain.fillRectangle(0, vi.y1, bv.workWidth(), vi.y2 - vi.y1,
1003 text.backgroundColor());
1006 text.drawSelection(pi, 0, 0);
1011 for (pit_type pit = vi.p1; pit <= vi.p2; ++pit) {
1012 refreshInside = repaintAll;
1013 ParagraphMetrics const & pm = bv.parMetrics(&text, pit);
1015 paintPar(pi, text, pit, 0, yy, repaintAll);
1019 // and grey out above (should not happen later)
1020 // lyxerr << "par ascent: " << text.getPar(vi.p1).ascent() << endl;
1021 if (vi.y1 > 0 && vi.update_strategy != SingleParUpdate)
1022 pain.fillRectangle(0, 0, bv.workWidth(), vi.y1, LColor::bottomarea);
1024 // and possibly grey out below
1025 // lyxerr << "par descent: " << text.getPar(vi.p1).ascent() << endl;
1026 if (vi.y2 < bv.workHeight() && vi.update_strategy != SingleParUpdate)
1027 pain.fillRectangle(0, vi.y2, bv.workWidth(), bv.workHeight() - vi.y2, LColor::bottomarea);
1031 void paintTextInset(LyXText const & text, PainterInfo & pi, int x, int y)
1033 // lyxerr << " paintTextInset: y: " << y << endl;
1035 y -= pi.base.bv->parMetrics(&text, 0).ascent();
1036 // This flag cannot be set from within same inset:
1037 bool repaintAll = refreshInside;
1038 for (int pit = 0; pit < int(text.paragraphs().size()); ++pit) {
1039 ParagraphMetrics const & pmi
1040 = pi.base.bv->parMetrics(&text, pit);
1042 paintPar(pi, text, pit, x, y, repaintAll);