2 * \file src/TextMetrics.cpp
3 * This file is part of LyX, the document processor.
4 * Licence details can be found in the file COPYING.
6 * \author Asger Alstrup
7 * \author Lars Gullik Bjønnes
8 * \author Jean-Marc Lasgouttes
10 * \author André Pönitz
12 * \author Jürgen Vigna
13 * \author Abdelrazak Younes
15 * Full author contact details are available in file CREDITS.
20 #include "TextMetrics.h"
23 #include "BufferParams.h"
24 #include "BufferView.h"
25 #include "paragraph_funcs.h"
26 #include "ParIterator.h"
27 #include "CoordCache.h"
29 #include "FuncRequest.h"
30 #include "FontIterator.h"
35 #include "MetricsInfo.h"
36 #include "ParagraphParameters.h"
39 #include "frontends/FontMetrics.h"
40 #include "frontends/Painter.h"
48 using frontend::FontMetrics;
52 int numberOfSeparators(Paragraph const & par, Row const & row)
54 pos_type const first = max(row.pos(), par.beginOfBody());
55 pos_type const last = row.endpos() - 1;
57 for (pos_type p = first; p < last; ++p) {
58 if (par.isSeparator(p))
65 int numberOfLabelHfills(Paragraph const & par, Row const & row)
67 pos_type last = row.endpos() - 1;
68 pos_type first = row.pos();
70 // hfill *DO* count at the beginning of paragraphs!
72 while (first < last && par.isHfill(first))
76 last = min(last, par.beginOfBody());
78 for (pos_type p = first; p < last; ++p) {
86 int numberOfHfills(Paragraph const & par, Row const & row)
88 pos_type const last = row.endpos();
89 pos_type first = row.pos();
91 // hfill *DO* count at the beginning of paragraphs!
93 while (first < last && par.isHfill(first))
97 first = max(first, par.beginOfBody());
100 for (pos_type p = first; p < last; ++p) {
109 TextMetrics::TextMetrics(BufferView * bv, Text * text)
110 : bv_(bv), text_(text)
113 max_width_ = bv_->workWidth();
114 dim_.wid = max_width_;
118 //text_->updateLabels(bv->buffer());
122 ParagraphMetrics const & TextMetrics::parMetrics(pit_type pit) const
124 return const_cast<TextMetrics *>(this)->parMetrics(pit, true);
128 ParagraphMetrics & TextMetrics::parMetrics(pit_type pit,
131 ParMetricsCache::iterator pmc_it = par_metrics_.find(pit);
132 if (pmc_it == par_metrics_.end()) {
133 pmc_it = par_metrics_.insert(
134 std::make_pair(pit, ParagraphMetrics(text_->getPar(pit)))).first;
136 if (pmc_it->second.rows().empty() && redo) {
139 return pmc_it->second;
143 bool TextMetrics::metrics(MetricsInfo & mi, Dimension & dim)
145 BOOST_ASSERT(mi.base.textwidth);
146 max_width_ = mi.base.textwidth;
148 //lyxerr << "Text::metrics: width: " << mi.base.textwidth
149 // << " maxWidth: " << max_width_ << "\nfont: " << mi.base.font << endl;
151 bool changed = false;
155 for (pit_type pit = 0, n = text_->paragraphs().size(); pit != n; ++pit) {
156 changed |= redoParagraph(pit);
157 ParagraphMetrics const & pm = par_metrics_[pit];
164 dim.asc = par_metrics_[0].ascent();
165 dim.des = h - dim.asc;
167 changed |= dim_ != dim;
173 int TextMetrics::rightMargin(ParagraphMetrics const & pm) const
175 return main_text_? pm.rightMargin(bv_->buffer()) : 0;
179 int TextMetrics::rightMargin(pit_type const pit) const
181 return main_text_? par_metrics_[pit].rightMargin(bv_->buffer()) : 0;
185 bool TextMetrics::redoParagraph(pit_type const pit)
187 // IMPORTANT NOTE: We pass 'false' explicitely in order to not call
188 // redoParagraph() recursively inside parMetrics.
189 Dimension old_dim = parMetrics(pit, false).dim();
190 ParagraphMetrics & pm = par_metrics_[pit];
191 // reinitialize paragraph dimension.
192 pm.dim() = Dimension();
193 Paragraph & par = text_->getPar(pit);
194 Buffer & buffer = bv_->buffer();
195 main_text_ = (text_ == &buffer.text());
196 bool changed = false;
198 // FIXME This check ought to be done somewhere else. It is the reason
199 // why text_ is not const. But then, where else to do it?
200 // Well, how can you end up with either (a) a biblio environment that
201 // has no InsetBibitem or (b) a biblio environment with more than one
202 // InsetBibitem? I think the answer is: when paragraphs are merged;
203 // when layout is set; when material is pasted.
204 int const moveCursor = par.checkBiblio(buffer.params().trackChanges);
206 const_cast<Cursor &>(bv_->cursor()).posRight();
207 else if (moveCursor < 0) {
208 Cursor & cursor = const_cast<Cursor &>(bv_->cursor());
209 if (cursor.pos() >= -moveCursor)
213 // Optimisation: this is used in the next two loops
214 // so better to calculate that once here.
215 int const right_margin = rightMargin(pm);
218 // FIXME: We should always use getFont(), see documentation of
219 // noFontChange() in Inset.h.
220 Font const bufferfont = buffer.params().getFont();
221 InsetList::const_iterator ii = par.insetlist.begin();
222 InsetList::const_iterator iend = par.insetlist.end();
223 for (; ii != iend; ++ii) {
225 int const w = max_width_ - text_->leftMargin(buffer, max_width_, pit, ii->pos)
227 Font const & font = ii->inset->noFontChange() ?
228 bufferfont : text_->getFont(buffer, par, ii->pos);
229 MetricsInfo mi(bv_, font, w);
230 changed |= ii->inset->metrics(mi, dim);
233 // rebreak the paragraph
236 par.setBeginOfBody();
238 // maximum pixel width of a row
239 int width = max_width_ - right_margin; // - leftMargin(buffer, max_width_, pit, row);
242 rowBreakPoint(width, pit, row);
243 setRowWidth(right_margin, pit, row);
244 setHeightOfRow(pit, row);
245 pm.rows().push_back(row);
246 pm.dim().wid = std::max(pm.dim().wid, row.width());
247 pm.dim().des += row.height();
249 } while (z < par.size());
251 // Make sure that if a par ends in newline, there is one more row
253 if (z > 0 && par.isNewline(z - 1)) {
256 setRowWidth(right_margin, pit, row);
257 setHeightOfRow(pit, row);
258 pm.rows().push_back(row);
259 pm.dim().des += row.height();
262 pm.dim().asc += pm.rows()[0].ascent();
263 pm.dim().des -= pm.rows()[0].ascent();
265 changed |= old_dim.height() != pm.dim().height();
267 // Update the row change statuses. The painter will need that info
268 // in order to know which row has to be repainted.
269 pm.updateRowChangeStatus();
274 RowMetrics TextMetrics::computeRowMetrics(pit_type const pit,
275 Row const & row) const
278 Buffer & buffer = bv_->buffer();
279 Paragraph const & par = text_->getPar(pit);
281 double w = dim_.wid - row.width();
283 bool const is_rtl = text_->isRTL(buffer, par);
285 result.x = rightMargin(pit);
287 result.x = text_->leftMargin(buffer, max_width_, pit, row.pos());
289 // is there a manual margin with a manual label
290 LayoutPtr const & layout = par.layout();
292 if (layout->margintype == MARGIN_MANUAL
293 && layout->labeltype == LABEL_MANUAL) {
294 /// We might have real hfills in the label part
295 int nlh = numberOfLabelHfills(par, row);
297 // A manual label par (e.g. List) has an auto-hfill
298 // between the label text and the body of the
300 // But we don't want to do this auto hfill if the par
305 if (nlh && !par.getLabelWidthString().empty())
306 result.label_hfill = labelFill(pit, row) / double(nlh);
309 // are there any hfills in the row?
310 int const nh = numberOfHfills(par, row);
314 result.hfill = w / nh;
315 // we don't have to look at the alignment if it is ALIGN_LEFT and
316 // if the row is already larger then the permitted width as then
317 // we force the LEFT_ALIGN'edness!
318 } else if (int(row.width()) < max_width_) {
319 // is it block, flushleft or flushright?
320 // set x how you need it
322 if (par.params().align() == LYX_ALIGN_LAYOUT)
323 align = layout->align;
325 align = par.params().align();
327 // Display-style insets should always be on a centred row
328 // The test on par.size() is to catch zero-size pars, which
329 // would trigger the assert in Paragraph::getInset().
330 //inset = par.size() ? par.getInset(row.pos()) : 0;
331 if (row.pos() < par.size()
332 && par.isInset(row.pos()))
334 switch(par.getInset(row.pos())->display()) {
335 case Inset::AlignLeft:
336 align = LYX_ALIGN_BLOCK;
338 case Inset::AlignCenter:
339 align = LYX_ALIGN_CENTER;
342 case Inset::AlignRight:
343 // unchanged (use align)
349 case LYX_ALIGN_BLOCK: {
350 int const ns = numberOfSeparators(par, row);
351 bool disp_inset = false;
352 if (row.endpos() < par.size()) {
353 Inset const * in = par.getInset(row.endpos());
355 disp_inset = in->display();
357 // If we have separators, this is not the last row of a
358 // par, does not end in newline, and is not row above a
359 // display inset... then stretch it
361 && row.endpos() < par.size()
362 && !par.isNewline(row.endpos() - 1)
365 result.separator = w / ns;
371 case LYX_ALIGN_RIGHT:
374 case LYX_ALIGN_CENTER:
381 pos_type body_pos = par.beginOfBody();
382 pos_type end = row.endpos();
385 && (body_pos > end || !par.isLineSeparator(body_pos - 1)))
387 result.x += theFontMetrics(text_->getLabelFont(buffer, par)).
388 width(layout->labelsep);
390 result.x += result.label_hfill;
398 int TextMetrics::labelFill(pit_type const pit, Row const & row) const
400 Buffer & buffer = bv_->buffer();
401 Paragraph const & par = text_->getPar(pit);
403 pos_type last = par.beginOfBody();
404 BOOST_ASSERT(last > 0);
406 // -1 because a label ends with a space that is in the label
409 // a separator at this end does not count
410 if (par.isLineSeparator(last))
414 for (pos_type i = row.pos(); i <= last; ++i)
415 w += singleWidth(pit, i);
417 docstring const & label = par.params().labelWidthString();
421 FontMetrics const & fm
422 = theFontMetrics(text_->getLabelFont(buffer, par));
424 return max(0, fm.width(label) - w);
430 // this needs special handling - only newlines count as a break point
431 pos_type addressBreakPoint(pos_type i, Paragraph const & par)
433 pos_type const end = par.size();
436 if (par.isNewline(i))
445 int TextMetrics::labelEnd(pit_type const pit) const
447 // labelEnd is only needed if the layout fills a flushleft label.
448 if (text_->getPar(pit).layout()->margintype != MARGIN_MANUAL)
450 // return the beginning of the body
451 return text_->leftMargin(bv_->buffer(), max_width_, pit);
455 void TextMetrics::rowBreakPoint(int width, pit_type const pit,
458 Buffer & buffer = bv_->buffer();
459 ParagraphMetrics const & pm = par_metrics_[pit];
460 Paragraph const & par = text_->getPar(pit);
461 pos_type const end = par.size();
462 pos_type const pos = row.pos();
473 LayoutPtr const & layout = par.layout();
475 if (layout->margintype == MARGIN_RIGHT_ADDRESS_BOX) {
476 row.endpos(addressBreakPoint(pos, par));
480 pos_type const body_pos = par.beginOfBody();
483 // Now we iterate through until we reach the right margin
484 // or the end of the par, then choose the possible break
487 int label_end = labelEnd(pit);
488 int const left = text_->leftMargin(buffer, max_width_, pit, pos);
491 // pixel width since last breakpoint
494 FontIterator fi = FontIterator(buffer, *text_, par, pos);
495 pos_type point = end;
497 for ( ; i < end; ++i, ++fi) {
498 int thiswidth = pm.singleWidth(i, *fi);
500 // add the auto-hfill from label end to the body
501 if (body_pos && i == body_pos) {
502 FontMetrics const & fm = theFontMetrics(
503 text_->getLabelFont(buffer, par));
504 int add = fm.width(layout->labelsep);
505 if (par.isLineSeparator(i - 1))
506 add -= singleWidth(pit, i - 1);
508 add = std::max(add, label_end - x);
513 chunkwidth += thiswidth;
515 // break before a character that will fall off
516 // the right of the row
518 // if no break before, break here
519 if (point == end || chunkwidth >= width - left) {
526 // exit on last registered breakpoint:
530 if (par.isNewline(i)) {
536 if (par.isInset(i + 1) && par.getInset(i + 1)->display()) {
541 if (par.isInset(i) && par.getInset(i)->display()) {
547 if (!par.isInset(i) || par.getInset(i)->isChar()) {
548 // some insets are line separators too
549 if (par.isLineSeparator(i)) {
550 // register breakpoint:
557 // maybe found one, but the par is short enough.
558 if (i == end && x < width)
561 // manual labels cannot be broken in LaTeX. But we
562 // want to make our on-screen rendering of footnotes
564 if (body_pos && point < body_pos)
571 void TextMetrics::setRowWidth(int right_margin,
572 pit_type const pit, Row & row) const
574 Buffer & buffer = bv_->buffer();
575 // get the pure distance
576 pos_type const end = row.endpos();
577 ParagraphMetrics const & pm = par_metrics_[pit];
578 Paragraph const & par = text_->getPar(pit);
579 int w = text_->leftMargin(buffer, max_width_, pit, row.pos());
580 int label_end = labelEnd(pit);
582 pos_type const body_pos = par.beginOfBody();
583 pos_type i = row.pos();
586 FontIterator fi = FontIterator(buffer, *text_, par, i);
587 for ( ; i < end; ++i, ++fi) {
588 if (body_pos > 0 && i == body_pos) {
589 FontMetrics const & fm = theFontMetrics(
590 text_->getLabelFont(buffer, par));
591 w += fm.width(par.layout()->labelsep);
592 if (par.isLineSeparator(i - 1))
593 w -= singleWidth(pit, i - 1);
594 w = max(w, label_end);
596 w += pm.singleWidth(i, *fi);
600 if (body_pos > 0 && body_pos >= end) {
601 FontMetrics const & fm = theFontMetrics(
602 text_->getLabelFont(buffer, par));
603 w += fm.width(par.layout()->labelsep);
604 if (end > 0 && par.isLineSeparator(end - 1))
605 w -= singleWidth(pit, end - 1);
606 w = max(w, label_end);
609 row.width(w + right_margin);
613 void TextMetrics::setHeightOfRow(pit_type const pit,
616 Paragraph const & par = text_->getPar(pit);
617 // get the maximum ascent and the maximum descent
618 double layoutasc = 0;
619 double layoutdesc = 0;
620 double const dh = defaultRowHeight();
622 // ok, let us initialize the maxasc and maxdesc value.
623 // Only the fontsize count. The other properties
624 // are taken from the layoutfont. Nicer on the screen :)
625 LayoutPtr const & layout = par.layout();
627 // as max get the first character of this row then it can
628 // increase but not decrease the height. Just some point to
629 // start with so we don't have to do the assignment below too
631 Buffer const & buffer = bv_->buffer();
632 Font font = text_->getFont(buffer, par, row.pos());
633 Font::FONT_SIZE const tmpsize = font.size();
634 font = text_->getLayoutFont(buffer, pit);
635 Font::FONT_SIZE const size = font.size();
636 font.setSize(tmpsize);
638 Font labelfont = text_->getLabelFont(buffer, par);
640 FontMetrics const & labelfont_metrics = theFontMetrics(labelfont);
641 FontMetrics const & fontmetrics = theFontMetrics(font);
643 // these are minimum values
644 double const spacing_val = layout->spacing.getValue()
645 * text_->spacing(buffer, par);
646 //lyxerr << "spacing_val = " << spacing_val << endl;
647 int maxasc = int(fontmetrics.maxAscent() * spacing_val);
648 int maxdesc = int(fontmetrics.maxDescent() * spacing_val);
650 // insets may be taller
651 InsetList::const_iterator ii = par.insetlist.begin();
652 InsetList::const_iterator iend = par.insetlist.end();
653 for ( ; ii != iend; ++ii) {
654 if (ii->pos >= row.pos() && ii->pos < row.endpos()) {
655 maxasc = max(maxasc, ii->inset->ascent());
656 maxdesc = max(maxdesc, ii->inset->descent());
660 // Check if any custom fonts are larger (Asger)
661 // This is not completely correct, but we can live with the small,
662 // cosmetic error for now.
664 pos_type const pos_end = row.endpos();
666 Font::FONT_SIZE maxsize =
667 par.highestFontInRange(row.pos(), pos_end, size);
668 if (maxsize > font.size()) {
669 // use standard paragraph font with the maximal size
671 maxfont.setSize(maxsize);
672 FontMetrics const & maxfontmetrics = theFontMetrics(maxfont);
673 maxasc = max(maxasc, maxfontmetrics.maxAscent());
674 maxdesc = max(maxdesc, maxfontmetrics.maxDescent());
677 // This is nicer with box insets:
682 ParagraphList const & pars = text_->paragraphs();
685 if (row.pos() == 0) {
686 BufferParams const & bufparams = buffer.params();
687 // some parskips VERY EASY IMPLEMENTATION
688 if (bufparams.paragraph_separation
689 == BufferParams::PARSEP_SKIP
690 && par.ownerCode() != Inset::ERT_CODE
691 && par.ownerCode() != Inset::LISTINGS_CODE
693 && ((layout->isParagraph() && par.getDepth() == 0)
694 || (pars[pit - 1].layout()->isParagraph()
695 && pars[pit - 1].getDepth() == 0)))
697 maxasc += bufparams.getDefSkip().inPixels(*bv_);
700 if (par.params().startOfAppendix())
701 maxasc += int(3 * dh);
703 // This is special code for the chapter, since the label of this
704 // layout is printed in an extra row
705 if (layout->counter == "chapter"
706 && !par.params().labelString().empty()) {
707 labeladdon = int(labelfont_metrics.maxHeight()
708 * layout->spacing.getValue()
709 * text_->spacing(buffer, par));
712 // special code for the top label
713 if ((layout->labeltype == LABEL_TOP_ENVIRONMENT
714 || layout->labeltype == LABEL_BIBLIO
715 || layout->labeltype == LABEL_CENTERED_TOP_ENVIRONMENT)
716 && isFirstInSequence(pit, pars)
717 && !par.getLabelstring().empty())
720 labelfont_metrics.maxHeight()
721 * layout->spacing.getValue()
722 * text_->spacing(buffer, par)
723 + (layout->topsep + layout->labelbottomsep) * dh);
726 // Add the layout spaces, for example before and after
727 // a section, or between the items of a itemize or enumerate
730 pit_type prev = depthHook(pit, pars, par.getDepth());
731 Paragraph const & prevpar = pars[prev];
733 && prevpar.layout() == layout
734 && prevpar.getDepth() == par.getDepth()
735 && prevpar.getLabelWidthString()
736 == par.getLabelWidthString()) {
737 layoutasc = layout->itemsep * dh;
738 } else if (pit != 0 || row.pos() != 0) {
739 if (layout->topsep > 0)
740 layoutasc = layout->topsep * dh;
743 prev = outerHook(pit, pars);
744 if (prev != pit_type(pars.size())) {
745 maxasc += int(pars[prev].layout()->parsep * dh);
746 } else if (pit != 0) {
747 Paragraph const & prevpar = pars[pit - 1];
748 if (prevpar.getDepth() != 0 ||
749 prevpar.layout() == layout) {
750 maxasc += int(layout->parsep * dh);
755 // is it a bottom line?
756 if (row.endpos() >= par.size()) {
757 // add the layout spaces, for example before and after
758 // a section, or between the items of a itemize or enumerate
760 pit_type nextpit = pit + 1;
761 if (nextpit != pit_type(pars.size())) {
766 if (pars[cpit].getDepth() > pars[nextpit].getDepth()) {
767 usual = pars[cpit].layout()->bottomsep * dh;
768 cpit = depthHook(cpit, pars, pars[nextpit].getDepth());
769 if (pars[cpit].layout() != pars[nextpit].layout()
770 || pars[nextpit].getLabelWidthString() != pars[cpit].getLabelWidthString())
772 unusual = pars[cpit].layout()->bottomsep * dh;
774 layoutdesc = max(unusual, usual);
775 } else if (pars[cpit].getDepth() == pars[nextpit].getDepth()) {
776 if (pars[cpit].layout() != pars[nextpit].layout()
777 || pars[nextpit].getLabelWidthString() != pars[cpit].getLabelWidthString())
778 layoutdesc = int(pars[cpit].layout()->bottomsep * dh);
783 // incalculate the layout spaces
784 maxasc += int(layoutasc * 2 / (2 + pars[pit].getDepth()));
785 maxdesc += int(layoutdesc * 2 / (2 + pars[pit].getDepth()));
787 // FIXME: the correct way is to do the following is to move the
788 // following code in another method specially tailored for the
789 // main Text. The following test is thus bogus.
790 // Top and bottom margin of the document (only at top-level)
792 if (pit == 0 && row.pos() == 0)
794 if (pit + 1 == pit_type(pars.size()) &&
795 row.endpos() == par.size() &&
796 !(row.endpos() > 0 && par.isNewline(row.endpos() - 1)))
800 row.ascent(maxasc + labeladdon);
801 row.descent(maxdesc);
805 // x is an absolute screen coord
806 // returns the column near the specified x-coordinate of the row
807 // x is set to the real beginning of this column
808 pos_type TextMetrics::getColumnNearX(pit_type const pit,
809 Row const & row, int & x, bool & boundary) const
811 Buffer const & buffer = bv_->buffer();
813 /// For the main Text, it is possible that this pit is not
814 /// yet in the CoordCache when moving cursor up.
815 /// x Paragraph coordinate is always 0 for main text anyway.
816 int const xo = main_text_? 0 : bv_->coordCache().get(text_, pit).x_;
818 RowMetrics const r = computeRowMetrics(pit, row);
819 Paragraph const & par = text_->getPar(pit);
821 bidi.computeTables(par, buffer, row);
823 pos_type vc = row.pos();
824 pos_type end = row.endpos();
826 LayoutPtr const & layout = par.layout();
828 bool left_side = false;
830 pos_type body_pos = par.beginOfBody();
833 double last_tmpx = tmpx;
836 (body_pos > end || !par.isLineSeparator(body_pos - 1)))
839 // check for empty row
845 while (vc < end && tmpx <= x) {
846 c = bidi.vis2log(vc);
848 if (body_pos > 0 && c == body_pos - 1) {
849 FontMetrics const & fm = theFontMetrics(
850 text_->getLabelFont(buffer, par));
851 tmpx += r.label_hfill + fm.width(layout->labelsep);
852 if (par.isLineSeparator(body_pos - 1))
853 tmpx -= singleWidth(pit, body_pos - 1);
856 if (par.hfillExpansion(row, c)) {
857 tmpx += singleWidth(pit, c);
861 tmpx += r.label_hfill;
862 } else if (par.isSeparator(c)) {
863 tmpx += singleWidth(pit, c);
867 tmpx += singleWidth(pit, c);
872 if ((tmpx + last_tmpx) / 2 > x) {
877 BOOST_ASSERT(vc <= end); // This shouldn't happen.
880 // This (rtl_support test) is not needed, but gives
881 // some speedup if rtl_support == false
882 bool const lastrow = lyxrc.rtl_support && row.endpos() == par.size();
884 // If lastrow is false, we don't need to compute
886 bool const rtl = lastrow ? text_->isRTL(buffer, par) : false;
888 ((rtl && left_side && vc == row.pos() && x < tmpx - 5) ||
889 (!rtl && !left_side && vc == end && x > tmpx + 5)))
891 else if (vc == row.pos()) {
892 c = bidi.vis2log(vc);
893 if (bidi.level(c) % 2 == 1)
896 c = bidi.vis2log(vc - 1);
897 bool const rtl = (bidi.level(c) % 2 == 1);
898 if (left_side == rtl) {
900 boundary = text_->isRTLBoundary(buffer, par, c);
904 // I believe this code is not needed anymore (Jug 20050717)
906 // The following code is necessary because the cursor position past
907 // the last char in a row is logically equivalent to that before
908 // the first char in the next row. That's why insets causing row
909 // divisions -- Newline and display-style insets -- must be treated
910 // specially, so cursor up/down doesn't get stuck in an air gap -- MV
911 // Newline inset, air gap below:
912 if (row.pos() < end && c >= end && par.isNewline(end - 1)) {
913 if (bidi.level(end -1) % 2 == 0)
914 tmpx -= singleWidth(pit, end - 1);
916 tmpx += singleWidth(pit, end - 1);
920 // Air gap above display inset:
921 if (row.pos() < end && c >= end && end < par.size()
922 && par.isInset(end) && par.getInset(end)->display()) {
925 // Air gap below display inset:
926 if (row.pos() < end && c >= end && par.isInset(end - 1)
927 && par.getInset(end - 1)->display()) {
933 pos_type const col = c - row.pos();
935 if (!c || end == par.size())
938 if (c==end && !par.isLineSeparator(c-1) && !par.isNewline(c-1)) {
943 return min(col, end - 1 - row.pos());
947 pos_type TextMetrics::x2pos(pit_type pit, int row, int x) const
949 ParagraphMetrics const & pm = par_metrics_[pit];
950 BOOST_ASSERT(!pm.rows().empty());
951 BOOST_ASSERT(row < int(pm.rows().size()));
953 Row const & r = pm.rows()[row];
954 return r.pos() + getColumnNearX(pit, r, x, bound);
958 int TextMetrics::singleWidth(pit_type pit, pos_type pos) const
960 Buffer const & buffer = bv_->buffer();
961 ParagraphMetrics const & pm = par_metrics_[pit];
963 return pm.singleWidth(pos, text_->getFont(buffer, text_->getPar(pit), pos));
967 //int Text::pos2x(pit_type pit, pos_type pos) const
969 // ParagraphMetrics const & pm = par_metrics_[pit];
970 // Row const & r = pm.rows()[row];
976 int defaultRowHeight()
978 return int(theFontMetrics(Font(Font::ALL_SANE)).maxHeight() * 1.2);