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 has nothing to do here and is the reason why text_ is not
195 if (par.checkBiblio(buffer.params().trackChanges))
196 const_cast<Cursor &>(bv_->cursor()).posRight();
198 // Optimisation: this is used in the next two loops
199 // so better to calculate that once here.
200 int const right_margin = rightMargin(pm);
203 // FIXME: We should always use getFont(), see documentation of
204 // noFontChange() in Inset.h.
205 Font const bufferfont = buffer.params().getFont();
206 InsetList::const_iterator ii = par.insetlist.begin();
207 InsetList::const_iterator iend = par.insetlist.end();
208 for (; ii != iend; ++ii) {
210 int const w = max_width_ - text_->leftMargin(buffer, max_width_, pit, ii->pos)
212 Font const & font = ii->inset->noFontChange() ?
213 bufferfont : text_->getFont(buffer, par, ii->pos);
214 MetricsInfo mi(bv_, font, w);
215 changed |= ii->inset->metrics(mi, dim);
218 // rebreak the paragraph
221 par.setBeginOfBody();
223 // maximum pixel width of a row
224 int width = max_width_ - right_margin; // - leftMargin(buffer, max_width_, pit, row);
227 rowBreakPoint(width, pit, row);
228 setRowWidth(right_margin, pit, row);
229 setHeightOfRow(pit, row);
230 pm.rows().push_back(row);
231 pm.dim().wid = std::max(pm.dim().wid, row.width());
232 pm.dim().des += row.height();
234 } while (z < par.size());
236 // Make sure that if a par ends in newline, there is one more row
238 // FIXME this is a dirty trick. Now the _same_ position in the
239 // paragraph occurs in _two_ different rows, and has two different
240 // display positions, leading to weird behaviour when moving up/down.
241 if (z > 0 && par.isNewline(z - 1)) {
244 setRowWidth(right_margin, pit, row);
245 setHeightOfRow(pit, row);
246 pm.rows().push_back(row);
247 pm.dim().des += row.height();
250 pm.dim().asc += pm.rows()[0].ascent();
251 pm.dim().des -= pm.rows()[0].ascent();
253 // IMPORTANT NOTE: We pass 'false' explicitely in order to not call
254 // redoParagraph() recursively inside parMetrics.
255 Dimension old_dim = parMetrics(pit, false).dim();
257 changed |= old_dim.height() != pm.dim().height();
259 par_metrics_[pit] = pm;
261 // Update the row change statuses. The painter will need that info
262 // in order to know which row has to be repainted.
263 par_metrics_[pit].updateRowChangeStatus();
268 RowMetrics TextMetrics::computeRowMetrics(pit_type const pit,
269 Row const & row) const
272 Buffer & buffer = *bv_->buffer();
273 Paragraph const & par = text_->getPar(pit);
275 double w = dim_.wid - row.width();
277 bool const is_rtl = text_->isRTL(buffer, par);
279 result.x = rightMargin(pit);
281 result.x = text_->leftMargin(buffer, max_width_, pit, row.pos());
283 // is there a manual margin with a manual label
284 Layout_ptr const & layout = par.layout();
286 if (layout->margintype == MARGIN_MANUAL
287 && layout->labeltype == LABEL_MANUAL) {
288 /// We might have real hfills in the label part
289 int nlh = numberOfLabelHfills(par, row);
291 // A manual label par (e.g. List) has an auto-hfill
292 // between the label text and the body of the
294 // But we don't want to do this auto hfill if the par
299 if (nlh && !par.getLabelWidthString().empty())
300 result.label_hfill = labelFill(par, row) / double(nlh);
303 // are there any hfills in the row?
304 int const nh = numberOfHfills(par, row);
308 result.hfill = w / nh;
309 // we don't have to look at the alignment if it is ALIGN_LEFT and
310 // if the row is already larger then the permitted width as then
311 // we force the LEFT_ALIGN'edness!
312 } else if (int(row.width()) < max_width_) {
313 // is it block, flushleft or flushright?
314 // set x how you need it
316 if (par.params().align() == LYX_ALIGN_LAYOUT)
317 align = layout->align;
319 align = par.params().align();
321 // Display-style insets should always be on a centred row
322 // The test on par.size() is to catch zero-size pars, which
323 // would trigger the assert in Paragraph::getInset().
324 //inset = par.size() ? par.getInset(row.pos()) : 0;
326 && par.isInset(row.pos()))
328 switch(par.getInset(row.pos())->display()) {
329 case Inset::AlignLeft:
330 align = LYX_ALIGN_BLOCK;
332 case Inset::AlignCenter:
333 align = LYX_ALIGN_CENTER;
335 // other types unchanged (use align)
340 case LYX_ALIGN_BLOCK: {
341 int const ns = numberOfSeparators(par, row);
342 bool disp_inset = false;
343 if (row.endpos() < par.size()) {
344 Inset const * in = par.getInset(row.endpos());
346 disp_inset = in->display();
348 // If we have separators, this is not the last row of a
349 // par, does not end in newline, and is not row above a
350 // display inset... then stretch it
352 && row.endpos() < par.size()
353 && !par.isNewline(row.endpos() - 1)
356 result.separator = w / ns;
362 case LYX_ALIGN_RIGHT:
365 case LYX_ALIGN_CENTER:
371 text_->bidi.computeTables(par, buffer, row);
373 pos_type body_pos = par.beginOfBody();
374 pos_type end = row.endpos();
377 && (body_pos > end || !par.isLineSeparator(body_pos - 1)))
379 docstring const lsep = from_utf8(layout->labelsep);
380 result.x += theFontMetrics(text_->getLabelFont(buffer, par)).width(lsep);
382 result.x += result.label_hfill;
390 int TextMetrics::labelFill(Paragraph const & par, Row const & row) const
392 Buffer & buffer = *bv_->buffer();
394 pos_type last = par.beginOfBody();
395 BOOST_ASSERT(last > 0);
397 // -1 because a label ends with a space that is in the label
400 // a separator at this end does not count
401 if (par.isLineSeparator(last))
405 for (pos_type i = row.pos(); i <= last; ++i)
406 w += text_->singleWidth(buffer, par, i);
408 docstring const & label = par.params().labelWidthString();
412 FontMetrics const & fm
413 = theFontMetrics(text_->getLabelFont(buffer, par));
415 return max(0, fm.width(label) - w);
421 // this needs special handling - only newlines count as a break point
422 pos_type addressBreakPoint(pos_type i, Paragraph const & par)
424 pos_type const end = par.size();
427 if (par.isNewline(i))
436 int TextMetrics::labelEnd(pit_type const pit) const
438 // labelEnd is only needed if the layout fills a flushleft label.
439 if (text_->getPar(pit).layout()->margintype != MARGIN_MANUAL)
441 // return the beginning of the body
442 return text_->leftMargin(*bv_->buffer(), max_width_, pit);
446 void TextMetrics::rowBreakPoint(int width, pit_type const pit,
449 Buffer & buffer = *bv_->buffer();
450 Paragraph const & par = text_->getPar(pit);
451 pos_type const end = par.size();
452 pos_type const pos = row.pos();
463 Layout_ptr const & layout = par.layout();
465 if (layout->margintype == MARGIN_RIGHT_ADDRESS_BOX) {
466 row.endpos(addressBreakPoint(pos, par));
470 pos_type const body_pos = par.beginOfBody();
473 // Now we iterate through until we reach the right margin
474 // or the end of the par, then choose the possible break
477 int label_end = labelEnd(pit);
478 int const left = text_->leftMargin(buffer, max_width_, pit, pos);
481 // pixel width since last breakpoint
484 FontIterator fi = FontIterator(buffer, *text_, par, pos);
485 pos_type point = end;
487 FontMetrics const & fm = theFontMetrics(text_->getLabelFont(buffer, par));
488 for ( ; i < end; ++i, ++fi) {
489 char_type const c = par.getChar(i);
490 int thiswidth = text_->singleWidth(par, i, c, *fi);
492 // add the auto-hfill from label end to the body
493 if (body_pos && i == body_pos) {
494 docstring lsep = from_utf8(layout->labelsep);
495 int add = fm.width(lsep);
496 if (par.isLineSeparator(i - 1))
497 add -= text_->singleWidth(buffer, par, i - 1);
499 add = std::max(add, label_end - x);
504 chunkwidth += thiswidth;
506 // break before a character that will fall off
507 // the right of the row
509 // if no break before, break here
510 if (point == end || chunkwidth >= width - left) {
517 // exit on last registered breakpoint:
521 if (par.isNewline(i)) {
527 if (par.isInset(i + 1) && par.getInset(i + 1)->display()) {
532 if (par.isInset(i) && par.getInset(i)->display()) {
538 if (!par.isInset(i) || par.getInset(i)->isChar()) {
539 // some insets are line separators too
540 if (par.isLineSeparator(i)) {
541 // register breakpoint:
548 // maybe found one, but the par is short enough.
549 if (i == end && x < width)
552 // manual labels cannot be broken in LaTeX. But we
553 // want to make our on-screen rendering of footnotes
555 if (body_pos && point < body_pos)
562 void TextMetrics::setRowWidth(int right_margin,
563 pit_type const pit, Row & row) const
565 Buffer & buffer = *bv_->buffer();
566 // get the pure distance
567 pos_type const end = row.endpos();
569 Paragraph const & par = text_->getPar(pit);
570 docstring const labelsep = from_utf8(par.layout()->labelsep);
571 int w = text_->leftMargin(buffer, max_width_, pit, row.pos());
572 int label_end = labelEnd(pit);
574 pos_type const body_pos = par.beginOfBody();
575 pos_type i = row.pos();
577 FontMetrics const & fm = theFontMetrics(text_->getLabelFont(buffer, par));
580 FontIterator fi = FontIterator(buffer, *text_, par, i);
581 for ( ; i < end; ++i, ++fi) {
582 if (body_pos > 0 && i == body_pos) {
583 w += fm.width(labelsep);
584 if (par.isLineSeparator(i - 1))
585 w -= text_->singleWidth(buffer, par, i - 1);
586 w = max(w, label_end);
588 char_type const c = par.getChar(i);
589 w += text_->singleWidth(par, i, c, *fi);
593 if (body_pos > 0 && body_pos >= end) {
594 w += fm.width(labelsep);
595 if (end > 0 && par.isLineSeparator(end - 1))
596 w -= text_->singleWidth(buffer, par, end - 1);
597 w = max(w, label_end);
600 row.width(w + right_margin);
604 void TextMetrics::setHeightOfRow(pit_type const pit,
607 Paragraph const & par = text_->getPar(pit);
608 // get the maximum ascent and the maximum descent
609 double layoutasc = 0;
610 double layoutdesc = 0;
611 double const dh = defaultRowHeight();
613 // ok, let us initialize the maxasc and maxdesc value.
614 // Only the fontsize count. The other properties
615 // are taken from the layoutfont. Nicer on the screen :)
616 Layout_ptr const & layout = par.layout();
618 // as max get the first character of this row then it can
619 // increase but not decrease the height. Just some point to
620 // start with so we don't have to do the assignment below too
622 Buffer const & buffer = *bv_->buffer();
623 Font font = text_->getFont(buffer, par, row.pos());
624 Font::FONT_SIZE const tmpsize = font.size();
625 font = text_->getLayoutFont(buffer, pit);
626 Font::FONT_SIZE const size = font.size();
627 font.setSize(tmpsize);
629 Font labelfont = text_->getLabelFont(buffer, par);
631 FontMetrics const & labelfont_metrics = theFontMetrics(labelfont);
632 FontMetrics const & fontmetrics = theFontMetrics(font);
634 // these are minimum values
635 double const spacing_val = layout->spacing.getValue()
636 * text_->spacing(buffer, par);
637 //lyxerr << "spacing_val = " << spacing_val << endl;
638 int maxasc = int(fontmetrics.maxAscent() * spacing_val);
639 int maxdesc = int(fontmetrics.maxDescent() * spacing_val);
641 // insets may be taller
642 InsetList::const_iterator ii = par.insetlist.begin();
643 InsetList::const_iterator iend = par.insetlist.end();
644 for ( ; ii != iend; ++ii) {
645 if (ii->pos >= row.pos() && ii->pos < row.endpos()) {
646 maxasc = max(maxasc, ii->inset->ascent());
647 maxdesc = max(maxdesc, ii->inset->descent());
651 // Check if any custom fonts are larger (Asger)
652 // This is not completely correct, but we can live with the small,
653 // cosmetic error for now.
655 pos_type const pos_end = row.endpos();
657 Font::FONT_SIZE maxsize =
658 par.highestFontInRange(row.pos(), pos_end, size);
659 if (maxsize > font.size()) {
660 font.setSize(maxsize);
661 maxasc = max(maxasc, fontmetrics.maxAscent());
662 maxdesc = max(maxdesc, fontmetrics.maxDescent());
665 // This is nicer with box insets:
670 ParagraphList const & pars = text_->paragraphs();
673 if (row.pos() == 0) {
674 BufferParams const & bufparams = buffer.params();
675 // some parskips VERY EASY IMPLEMENTATION
676 if (bufparams.paragraph_separation
677 == BufferParams::PARSEP_SKIP
678 && par.ownerCode() != Inset::ERT_CODE
679 && par.ownerCode() != Inset::LISTINGS_CODE
681 && ((layout->isParagraph() && par.getDepth() == 0)
682 || (pars[pit - 1].layout()->isParagraph()
683 && pars[pit - 1].getDepth() == 0)))
685 maxasc += bufparams.getDefSkip().inPixels(*bv_);
688 if (par.params().startOfAppendix())
689 maxasc += int(3 * dh);
691 // This is special code for the chapter, since the label of this
692 // layout is printed in an extra row
693 if (layout->counter == "chapter"
694 && !par.params().labelString().empty()) {
695 labeladdon = int(labelfont_metrics.maxHeight()
696 * layout->spacing.getValue()
697 * text_->spacing(buffer, par));
700 // special code for the top label
701 if ((layout->labeltype == LABEL_TOP_ENVIRONMENT
702 || layout->labeltype == LABEL_BIBLIO
703 || layout->labeltype == LABEL_CENTERED_TOP_ENVIRONMENT)
704 && isFirstInSequence(pit, pars)
705 && !par.getLabelstring().empty())
708 labelfont_metrics.maxHeight()
709 * layout->spacing.getValue()
710 * text_->spacing(buffer, par)
711 + (layout->topsep + layout->labelbottomsep) * dh);
714 // Add the layout spaces, for example before and after
715 // a section, or between the items of a itemize or enumerate
718 pit_type prev = depthHook(pit, pars, par.getDepth());
719 Paragraph const & prevpar = pars[prev];
721 && prevpar.layout() == layout
722 && prevpar.getDepth() == par.getDepth()
723 && prevpar.getLabelWidthString()
724 == par.getLabelWidthString()) {
725 layoutasc = layout->itemsep * dh;
726 } else if (pit != 0 || row.pos() != 0) {
727 if (layout->topsep > 0)
728 layoutasc = layout->topsep * dh;
731 prev = outerHook(pit, pars);
732 if (prev != pit_type(pars.size())) {
733 maxasc += int(pars[prev].layout()->parsep * dh);
734 } else if (pit != 0) {
735 Paragraph const & prevpar = pars[pit - 1];
736 if (prevpar.getDepth() != 0 ||
737 prevpar.layout() == layout) {
738 maxasc += int(layout->parsep * dh);
743 // is it a bottom line?
744 if (row.endpos() >= par.size()) {
745 // add the layout spaces, for example before and after
746 // a section, or between the items of a itemize or enumerate
748 pit_type nextpit = pit + 1;
749 if (nextpit != pit_type(pars.size())) {
754 if (pars[cpit].getDepth() > pars[nextpit].getDepth()) {
755 usual = pars[cpit].layout()->bottomsep * dh;
756 cpit = depthHook(cpit, pars, pars[nextpit].getDepth());
757 if (pars[cpit].layout() != pars[nextpit].layout()
758 || pars[nextpit].getLabelWidthString() != pars[cpit].getLabelWidthString())
760 unusual = pars[cpit].layout()->bottomsep * dh;
762 layoutdesc = max(unusual, usual);
763 } else if (pars[cpit].getDepth() == pars[nextpit].getDepth()) {
764 if (pars[cpit].layout() != pars[nextpit].layout()
765 || pars[nextpit].getLabelWidthString() != pars[cpit].getLabelWidthString())
766 layoutdesc = int(pars[cpit].layout()->bottomsep * dh);
771 // incalculate the layout spaces
772 maxasc += int(layoutasc * 2 / (2 + pars[pit].getDepth()));
773 maxdesc += int(layoutdesc * 2 / (2 + pars[pit].getDepth()));
775 // FIXME: the correct way is to do the following is to move the
776 // following code in another method specially tailored for the
777 // main Text. The following test is thus bogus.
778 // Top and bottom margin of the document (only at top-level)
780 if (pit == 0 && row.pos() == 0)
782 if (pit + 1 == pit_type(pars.size()) &&
783 row.endpos() == par.size())
787 row.ascent(maxasc + labeladdon);
788 row.descent(maxdesc);
792 // x is an absolute screen coord
793 // returns the column near the specified x-coordinate of the row
794 // x is set to the real beginning of this column
795 pos_type TextMetrics::getColumnNearX(pit_type const pit,
796 Row const & row, int & x, bool & boundary) const
798 Buffer const & buffer = *bv_->buffer();
800 /// For the main Text, it is possible that this pit is not
801 /// yet in the CoordCache when moving cursor up.
802 /// x Paragraph coordinate is always 0 for main text anyway.
803 int const xo = main_text_? 0 : bv_->coordCache().get(text_, pit).x_;
805 RowMetrics const r = computeRowMetrics(pit, row);
806 Paragraph const & par = text_->getPar(pit);
808 pos_type vc = row.pos();
809 pos_type end = row.endpos();
811 Layout_ptr const & layout = par.layout();
813 bool left_side = false;
815 pos_type body_pos = par.beginOfBody();
818 double last_tmpx = tmpx;
821 (body_pos > end || !par.isLineSeparator(body_pos - 1)))
824 // check for empty row
830 frontend::FontMetrics const & fm
831 = theFontMetrics(text_->getLabelFont(buffer, par));
833 while (vc < end && tmpx <= x) {
834 c = text_->bidi.vis2log(vc);
836 if (body_pos > 0 && c == body_pos - 1) {
838 docstring const lsep = from_utf8(layout->labelsep);
839 tmpx += r.label_hfill + fm.width(lsep);
840 if (par.isLineSeparator(body_pos - 1))
841 tmpx -= text_->singleWidth(buffer, par, body_pos - 1);
844 if (par.hfillExpansion(row, c)) {
845 tmpx += text_->singleWidth(buffer, par, c);
849 tmpx += r.label_hfill;
850 } else if (par.isSeparator(c)) {
851 tmpx += text_->singleWidth(buffer, par, c);
855 tmpx += text_->singleWidth(buffer, par, c);
860 if ((tmpx + last_tmpx) / 2 > x) {
865 BOOST_ASSERT(vc <= end); // This shouldn't happen.
868 // This (rtl_support test) is not needed, but gives
869 // some speedup if rtl_support == false
870 bool const lastrow = lyxrc.rtl_support && row.endpos() == par.size();
872 // If lastrow is false, we don't need to compute
874 bool const rtl = lastrow ? text_->isRTL(buffer, par) : false;
876 ((rtl && left_side && vc == row.pos() && x < tmpx - 5) ||
877 (!rtl && !left_side && vc == end && x > tmpx + 5)))
879 else if (vc == row.pos()) {
880 c = text_->bidi.vis2log(vc);
881 if (text_->bidi.level(c) % 2 == 1)
884 c = text_->bidi.vis2log(vc - 1);
885 bool const rtl = (text_->bidi.level(c) % 2 == 1);
886 if (left_side == rtl) {
888 boundary = text_->bidi.isBoundary(buffer, par, c);
892 // I believe this code is not needed anymore (Jug 20050717)
894 // The following code is necessary because the cursor position past
895 // the last char in a row is logically equivalent to that before
896 // the first char in the next row. That's why insets causing row
897 // divisions -- Newline and display-style insets -- must be treated
898 // specially, so cursor up/down doesn't get stuck in an air gap -- MV
899 // Newline inset, air gap below:
900 if (row.pos() < end && c >= end && par.isNewline(end - 1)) {
901 if (text_->bidi.level(end -1) % 2 == 0)
902 tmpx -= text_->singleWidth(buffer, par, end - 1);
904 tmpx += text_->singleWidth(buffer, par, end - 1);
908 // Air gap above display inset:
909 if (row.pos() < end && c >= end && end < par.size()
910 && par.isInset(end) && par.getInset(end)->display()) {
913 // Air gap below display inset:
914 if (row.pos() < end && c >= end && par.isInset(end - 1)
915 && par.getInset(end - 1)->display()) {
921 pos_type const col = c - row.pos();
923 if (!c || end == par.size())
926 if (c==end && !par.isLineSeparator(c-1) && !par.isNewline(c-1)) {
931 return min(col, end - 1 - row.pos());
935 pos_type TextMetrics::x2pos(pit_type pit, int row, int x) const
937 ParagraphMetrics const & pm = parMetrics(pit);
938 BOOST_ASSERT(!pm.rows().empty());
939 BOOST_ASSERT(row < int(pm.rows().size()));
941 Row const & r = pm.rows()[row];
942 return r.pos() + getColumnNearX(pit, r, x, bound);
946 //int Text::pos2x(pit_type pit, pos_type pos) const
948 // ParagraphMetrics const & pm = parMetrics(pit);
949 // Row const & r = pm.rows()[row];
955 int defaultRowHeight()
957 return int(theFontMetrics(Font(Font::ALL_SANE)).maxHeight() * 1.2);