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 = parMetrics(pit);
164 dim.asc = parMetrics(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 Paragraph & par = text_->getPar(pit);
188 ParagraphMetrics pm(par);
189 Buffer & buffer = *bv_->buffer();
190 main_text_ = (text_ == &buffer.text());
191 bool changed = false;
193 // FIXME This check ought to be done somewhere else. It is the reason
194 // why text_ is not const. But then, where else to do it?
195 // Well, how can you end up with either (a) a biblio environment that
196 // has no InsetBibitem or (b) a biblio environment with more than one
197 // InsetBibitem? I think the answer is: when paragraphs are merged;
198 // when layout is set; when material is pasted.
199 int const moveCursor = par.checkBiblio(buffer.params().trackChanges);
201 const_cast<Cursor &>(bv_->cursor()).posRight();
202 else if (moveCursor < 0) {
203 Cursor & cursor = const_cast<Cursor &>(bv_->cursor());
204 if (cursor.pos() >= -moveCursor)
208 // Optimisation: this is used in the next two loops
209 // so better to calculate that once here.
210 int const right_margin = rightMargin(pm);
213 // FIXME: We should always use getFont(), see documentation of
214 // noFontChange() in Inset.h.
215 Font const bufferfont = buffer.params().getFont();
216 InsetList::const_iterator ii = par.insetlist.begin();
217 InsetList::const_iterator iend = par.insetlist.end();
218 for (; ii != iend; ++ii) {
220 int const w = max_width_ - text_->leftMargin(buffer, max_width_, pit, ii->pos)
222 Font const & font = ii->inset->noFontChange() ?
223 bufferfont : text_->getFont(buffer, par, ii->pos);
224 MetricsInfo mi(bv_, font, w);
225 changed |= ii->inset->metrics(mi, dim);
228 // rebreak the paragraph
231 par.setBeginOfBody();
233 // maximum pixel width of a row
234 int width = max_width_ - right_margin; // - leftMargin(buffer, max_width_, pit, row);
237 rowBreakPoint(width, pit, row);
238 setRowWidth(right_margin, pit, row);
239 setHeightOfRow(pit, row);
240 pm.rows().push_back(row);
241 pm.dim().wid = std::max(pm.dim().wid, row.width());
242 pm.dim().des += row.height();
244 } while (z < par.size());
246 // Make sure that if a par ends in newline, there is one more row
248 if (z > 0 && par.isNewline(z - 1)) {
251 setRowWidth(right_margin, pit, row);
252 setHeightOfRow(pit, row);
253 pm.rows().push_back(row);
254 pm.dim().des += row.height();
257 pm.dim().asc += pm.rows()[0].ascent();
258 pm.dim().des -= pm.rows()[0].ascent();
260 // IMPORTANT NOTE: We pass 'false' explicitely in order to not call
261 // redoParagraph() recursively inside parMetrics.
262 Dimension old_dim = parMetrics(pit, false).dim();
264 changed |= old_dim.height() != pm.dim().height();
266 par_metrics_[pit] = pm;
268 // Update the row change statuses. The painter will need that info
269 // in order to know which row has to be repainted.
270 par_metrics_[pit].updateRowChangeStatus();
275 RowMetrics TextMetrics::computeRowMetrics(pit_type const pit,
276 Row const & row) const
279 Buffer & buffer = *bv_->buffer();
280 Paragraph const & par = text_->getPar(pit);
282 double w = dim_.wid - row.width();
284 bool const is_rtl = text_->isRTL(buffer, par);
286 result.x = rightMargin(pit);
288 result.x = text_->leftMargin(buffer, max_width_, pit, row.pos());
290 // is there a manual margin with a manual label
291 Layout_ptr const & layout = par.layout();
293 if (layout->margintype == MARGIN_MANUAL
294 && layout->labeltype == LABEL_MANUAL) {
295 /// We might have real hfills in the label part
296 int nlh = numberOfLabelHfills(par, row);
298 // A manual label par (e.g. List) has an auto-hfill
299 // between the label text and the body of the
301 // But we don't want to do this auto hfill if the par
306 if (nlh && !par.getLabelWidthString().empty())
307 result.label_hfill = labelFill(par, row) / double(nlh);
310 // are there any hfills in the row?
311 int const nh = numberOfHfills(par, row);
315 result.hfill = w / nh;
316 // we don't have to look at the alignment if it is ALIGN_LEFT and
317 // if the row is already larger then the permitted width as then
318 // we force the LEFT_ALIGN'edness!
319 } else if (int(row.width()) < max_width_) {
320 // is it block, flushleft or flushright?
321 // set x how you need it
323 if (par.params().align() == LYX_ALIGN_LAYOUT)
324 align = layout->align;
326 align = par.params().align();
328 // Display-style insets should always be on a centred row
329 // The test on par.size() is to catch zero-size pars, which
330 // would trigger the assert in Paragraph::getInset().
331 //inset = par.size() ? par.getInset(row.pos()) : 0;
332 if (row.pos() < par.size()
333 && par.isInset(row.pos()))
335 switch(par.getInset(row.pos())->display()) {
336 case Inset::AlignLeft:
337 align = LYX_ALIGN_BLOCK;
339 case Inset::AlignCenter:
340 align = LYX_ALIGN_CENTER;
343 case Inset::AlignRight:
344 // unchanged (use align)
350 case LYX_ALIGN_BLOCK: {
351 int const ns = numberOfSeparators(par, row);
352 bool disp_inset = false;
353 if (row.endpos() < par.size()) {
354 Inset const * in = par.getInset(row.endpos());
356 disp_inset = in->display();
358 // If we have separators, this is not the last row of a
359 // par, does not end in newline, and is not row above a
360 // display inset... then stretch it
362 && row.endpos() < par.size()
363 && !par.isNewline(row.endpos() - 1)
366 result.separator = w / ns;
372 case LYX_ALIGN_RIGHT:
375 case LYX_ALIGN_CENTER:
382 pos_type body_pos = par.beginOfBody();
383 pos_type end = row.endpos();
386 && (body_pos > end || !par.isLineSeparator(body_pos - 1)))
388 result.x += theFontMetrics(text_->getLabelFont(buffer, par)).
389 width(layout->labelsep);
391 result.x += result.label_hfill;
399 int TextMetrics::labelFill(Paragraph const & par, Row const & row) const
401 Buffer & buffer = *bv_->buffer();
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 += text_->singleWidth(buffer, par, 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 Paragraph const & par = text_->getPar(pit);
460 pos_type const end = par.size();
461 pos_type const pos = row.pos();
472 Layout_ptr const & layout = par.layout();
474 if (layout->margintype == MARGIN_RIGHT_ADDRESS_BOX) {
475 row.endpos(addressBreakPoint(pos, par));
479 pos_type const body_pos = par.beginOfBody();
482 // Now we iterate through until we reach the right margin
483 // or the end of the par, then choose the possible break
486 int label_end = labelEnd(pit);
487 int const left = text_->leftMargin(buffer, max_width_, pit, pos);
490 // pixel width since last breakpoint
493 FontIterator fi = FontIterator(buffer, *text_, par, pos);
494 pos_type point = end;
496 for ( ; i < end; ++i, ++fi) {
497 char_type const c = par.getChar(i);
498 int thiswidth = text_->singleWidth(par, i, c, *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 -= text_->singleWidth(buffer, par, 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();
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 -= text_->singleWidth(buffer, par, i - 1);
594 w = max(w, label_end);
596 char_type const c = par.getChar(i);
597 w += text_->singleWidth(par, i, c, *fi);
601 if (body_pos > 0 && body_pos >= end) {
602 FontMetrics const & fm = theFontMetrics(
603 text_->getLabelFont(buffer, par));
604 w += fm.width(par.layout()->labelsep);
605 if (end > 0 && par.isLineSeparator(end - 1))
606 w -= text_->singleWidth(buffer, par, end - 1);
607 w = max(w, label_end);
610 row.width(w + right_margin);
614 void TextMetrics::setHeightOfRow(pit_type const pit,
617 Paragraph const & par = text_->getPar(pit);
618 // get the maximum ascent and the maximum descent
619 double layoutasc = 0;
620 double layoutdesc = 0;
621 double const dh = defaultRowHeight();
623 // ok, let us initialize the maxasc and maxdesc value.
624 // Only the fontsize count. The other properties
625 // are taken from the layoutfont. Nicer on the screen :)
626 Layout_ptr const & layout = par.layout();
628 // as max get the first character of this row then it can
629 // increase but not decrease the height. Just some point to
630 // start with so we don't have to do the assignment below too
632 Buffer const & buffer = *bv_->buffer();
633 Font font = text_->getFont(buffer, par, row.pos());
634 Font::FONT_SIZE const tmpsize = font.size();
635 font = text_->getLayoutFont(buffer, pit);
636 Font::FONT_SIZE const size = font.size();
637 font.setSize(tmpsize);
639 Font labelfont = text_->getLabelFont(buffer, par);
641 FontMetrics const & labelfont_metrics = theFontMetrics(labelfont);
642 FontMetrics const & fontmetrics = theFontMetrics(font);
644 // these are minimum values
645 double const spacing_val = layout->spacing.getValue()
646 * text_->spacing(buffer, par);
647 //lyxerr << "spacing_val = " << spacing_val << endl;
648 int maxasc = int(fontmetrics.maxAscent() * spacing_val);
649 int maxdesc = int(fontmetrics.maxDescent() * spacing_val);
651 // insets may be taller
652 InsetList::const_iterator ii = par.insetlist.begin();
653 InsetList::const_iterator iend = par.insetlist.end();
654 for ( ; ii != iend; ++ii) {
655 if (ii->pos >= row.pos() && ii->pos < row.endpos()) {
656 maxasc = max(maxasc, ii->inset->ascent());
657 maxdesc = max(maxdesc, ii->inset->descent());
661 // Check if any custom fonts are larger (Asger)
662 // This is not completely correct, but we can live with the small,
663 // cosmetic error for now.
665 pos_type const pos_end = row.endpos();
667 Font::FONT_SIZE maxsize =
668 par.highestFontInRange(row.pos(), pos_end, size);
669 if (maxsize > font.size()) {
670 // use standard paragraph font with the maximal size
672 maxfont.setSize(maxsize);
673 FontMetrics const & maxfontmetrics = theFontMetrics(maxfont);
674 maxasc = max(maxasc, maxfontmetrics.maxAscent());
675 maxdesc = max(maxdesc, maxfontmetrics.maxDescent());
678 // This is nicer with box insets:
683 ParagraphList const & pars = text_->paragraphs();
686 if (row.pos() == 0) {
687 BufferParams const & bufparams = buffer.params();
688 // some parskips VERY EASY IMPLEMENTATION
689 if (bufparams.paragraph_separation
690 == BufferParams::PARSEP_SKIP
691 && par.ownerCode() != Inset::ERT_CODE
692 && par.ownerCode() != Inset::LISTINGS_CODE
694 && ((layout->isParagraph() && par.getDepth() == 0)
695 || (pars[pit - 1].layout()->isParagraph()
696 && pars[pit - 1].getDepth() == 0)))
698 maxasc += bufparams.getDefSkip().inPixels(*bv_);
701 if (par.params().startOfAppendix())
702 maxasc += int(3 * dh);
704 // This is special code for the chapter, since the label of this
705 // layout is printed in an extra row
706 if (layout->counter == "chapter"
707 && !par.params().labelString().empty()) {
708 labeladdon = int(labelfont_metrics.maxHeight()
709 * layout->spacing.getValue()
710 * text_->spacing(buffer, par));
713 // special code for the top label
714 if ((layout->labeltype == LABEL_TOP_ENVIRONMENT
715 || layout->labeltype == LABEL_BIBLIO
716 || layout->labeltype == LABEL_CENTERED_TOP_ENVIRONMENT)
717 && isFirstInSequence(pit, pars)
718 && !par.getLabelstring().empty())
721 labelfont_metrics.maxHeight()
722 * layout->spacing.getValue()
723 * text_->spacing(buffer, par)
724 + (layout->topsep + layout->labelbottomsep) * dh);
727 // Add the layout spaces, for example before and after
728 // a section, or between the items of a itemize or enumerate
731 pit_type prev = depthHook(pit, pars, par.getDepth());
732 Paragraph const & prevpar = pars[prev];
734 && prevpar.layout() == layout
735 && prevpar.getDepth() == par.getDepth()
736 && prevpar.getLabelWidthString()
737 == par.getLabelWidthString()) {
738 layoutasc = layout->itemsep * dh;
739 } else if (pit != 0 || row.pos() != 0) {
740 if (layout->topsep > 0)
741 layoutasc = layout->topsep * dh;
744 prev = outerHook(pit, pars);
745 if (prev != pit_type(pars.size())) {
746 maxasc += int(pars[prev].layout()->parsep * dh);
747 } else if (pit != 0) {
748 Paragraph const & prevpar = pars[pit - 1];
749 if (prevpar.getDepth() != 0 ||
750 prevpar.layout() == layout) {
751 maxasc += int(layout->parsep * dh);
756 // is it a bottom line?
757 if (row.endpos() >= par.size()) {
758 // add the layout spaces, for example before and after
759 // a section, or between the items of a itemize or enumerate
761 pit_type nextpit = pit + 1;
762 if (nextpit != pit_type(pars.size())) {
767 if (pars[cpit].getDepth() > pars[nextpit].getDepth()) {
768 usual = pars[cpit].layout()->bottomsep * dh;
769 cpit = depthHook(cpit, pars, pars[nextpit].getDepth());
770 if (pars[cpit].layout() != pars[nextpit].layout()
771 || pars[nextpit].getLabelWidthString() != pars[cpit].getLabelWidthString())
773 unusual = pars[cpit].layout()->bottomsep * dh;
775 layoutdesc = max(unusual, usual);
776 } else if (pars[cpit].getDepth() == pars[nextpit].getDepth()) {
777 if (pars[cpit].layout() != pars[nextpit].layout()
778 || pars[nextpit].getLabelWidthString() != pars[cpit].getLabelWidthString())
779 layoutdesc = int(pars[cpit].layout()->bottomsep * dh);
784 // incalculate the layout spaces
785 maxasc += int(layoutasc * 2 / (2 + pars[pit].getDepth()));
786 maxdesc += int(layoutdesc * 2 / (2 + pars[pit].getDepth()));
788 // FIXME: the correct way is to do the following is to move the
789 // following code in another method specially tailored for the
790 // main Text. The following test is thus bogus.
791 // Top and bottom margin of the document (only at top-level)
793 if (pit == 0 && row.pos() == 0)
795 if (pit + 1 == pit_type(pars.size()) &&
796 row.endpos() == par.size() &&
797 !(row.endpos() > 0 && par.isNewline(row.endpos() - 1)))
801 row.ascent(maxasc + labeladdon);
802 row.descent(maxdesc);
806 // x is an absolute screen coord
807 // returns the column near the specified x-coordinate of the row
808 // x is set to the real beginning of this column
809 pos_type TextMetrics::getColumnNearX(pit_type const pit,
810 Row const & row, int & x, bool & boundary) const
812 Buffer const & buffer = *bv_->buffer();
814 /// For the main Text, it is possible that this pit is not
815 /// yet in the CoordCache when moving cursor up.
816 /// x Paragraph coordinate is always 0 for main text anyway.
817 int const xo = main_text_? 0 : bv_->coordCache().get(text_, pit).x_;
819 RowMetrics const r = computeRowMetrics(pit, row);
820 Paragraph const & par = text_->getPar(pit);
822 bidi.computeTables(par, buffer, row);
824 pos_type vc = row.pos();
825 pos_type end = row.endpos();
827 Layout_ptr const & layout = par.layout();
829 bool left_side = false;
831 pos_type body_pos = par.beginOfBody();
834 double last_tmpx = tmpx;
837 (body_pos > end || !par.isLineSeparator(body_pos - 1)))
840 // check for empty row
846 while (vc < end && tmpx <= x) {
847 c = bidi.vis2log(vc);
849 if (body_pos > 0 && c == body_pos - 1) {
850 FontMetrics const & fm = theFontMetrics(
851 text_->getLabelFont(buffer, par));
852 tmpx += r.label_hfill + fm.width(layout->labelsep);
853 if (par.isLineSeparator(body_pos - 1))
854 tmpx -= text_->singleWidth(buffer, par, body_pos - 1);
857 if (par.hfillExpansion(row, c)) {
858 tmpx += text_->singleWidth(buffer, par, c);
862 tmpx += r.label_hfill;
863 } else if (par.isSeparator(c)) {
864 tmpx += text_->singleWidth(buffer, par, c);
868 tmpx += text_->singleWidth(buffer, par, c);
873 if ((tmpx + last_tmpx) / 2 > x) {
878 BOOST_ASSERT(vc <= end); // This shouldn't happen.
881 // This (rtl_support test) is not needed, but gives
882 // some speedup if rtl_support == false
883 bool const lastrow = lyxrc.rtl_support && row.endpos() == par.size();
885 // If lastrow is false, we don't need to compute
887 bool const rtl = lastrow ? text_->isRTL(buffer, par) : false;
889 ((rtl && left_side && vc == row.pos() && x < tmpx - 5) ||
890 (!rtl && !left_side && vc == end && x > tmpx + 5)))
892 else if (vc == row.pos()) {
893 c = bidi.vis2log(vc);
894 if (bidi.level(c) % 2 == 1)
897 c = bidi.vis2log(vc - 1);
898 bool const rtl = (bidi.level(c) % 2 == 1);
899 if (left_side == rtl) {
901 boundary = text_->isRTLBoundary(buffer, par, c);
905 // I believe this code is not needed anymore (Jug 20050717)
907 // The following code is necessary because the cursor position past
908 // the last char in a row is logically equivalent to that before
909 // the first char in the next row. That's why insets causing row
910 // divisions -- Newline and display-style insets -- must be treated
911 // specially, so cursor up/down doesn't get stuck in an air gap -- MV
912 // Newline inset, air gap below:
913 if (row.pos() < end && c >= end && par.isNewline(end - 1)) {
914 if (bidi.level(end -1) % 2 == 0)
915 tmpx -= text_->singleWidth(buffer, par, end - 1);
917 tmpx += text_->singleWidth(buffer, par, end - 1);
921 // Air gap above display inset:
922 if (row.pos() < end && c >= end && end < par.size()
923 && par.isInset(end) && par.getInset(end)->display()) {
926 // Air gap below display inset:
927 if (row.pos() < end && c >= end && par.isInset(end - 1)
928 && par.getInset(end - 1)->display()) {
934 pos_type const col = c - row.pos();
936 if (!c || end == par.size())
939 if (c==end && !par.isLineSeparator(c-1) && !par.isNewline(c-1)) {
944 return min(col, end - 1 - row.pos());
948 pos_type TextMetrics::x2pos(pit_type pit, int row, int x) const
950 ParagraphMetrics const & pm = parMetrics(pit);
951 BOOST_ASSERT(!pm.rows().empty());
952 BOOST_ASSERT(row < int(pm.rows().size()));
954 Row const & r = pm.rows()[row];
955 return r.pos() + getColumnNearX(pit, r, x, bound);
959 //int Text::pos2x(pit_type pit, pos_type pos) const
961 // ParagraphMetrics const & pm = parMetrics(pit);
962 // Row const & r = pm.rows()[row];
968 int defaultRowHeight()
970 return int(theFontMetrics(Font(Font::ALL_SANE)).maxHeight() * 1.2);