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 "buffer_funcs.h"
24 #include "BufferParams.h"
25 #include "BufferView.h"
26 #include "bufferview_funcs.h"
28 #include "CoordCache.h"
29 #include "CutAndPaste.h"
31 #include "FontIterator.h"
32 #include "FuncRequest.h"
35 #include "MetricsInfo.h"
36 #include "paragraph_funcs.h"
37 #include "ParagraphParameters.h"
38 #include "ParIterator.h"
39 #include "rowpainter.h"
44 #include "frontends/FontMetrics.h"
45 #include "frontends/Painter.h"
47 #include <boost/current_function.hpp>
55 using frontend::FontMetrics;
59 int numberOfSeparators(Paragraph const & par, Row const & row)
61 pos_type const first = max(row.pos(), par.beginOfBody());
62 pos_type const last = row.endpos() - 1;
64 for (pos_type p = first; p < last; ++p) {
65 if (par.isSeparator(p))
72 int numberOfLabelHfills(Paragraph const & par, Row const & row)
74 pos_type last = row.endpos() - 1;
75 pos_type first = row.pos();
77 // hfill *DO* count at the beginning of paragraphs!
79 while (first < last && par.isHfill(first))
83 last = min(last, par.beginOfBody());
85 for (pos_type p = first; p < last; ++p) {
93 int numberOfHfills(Paragraph const & par, Row const & row)
95 pos_type const last = row.endpos();
96 pos_type first = row.pos();
98 // hfill *DO* count at the beginning of paragraphs!
100 while (first < last && par.isHfill(first))
104 first = max(first, par.beginOfBody());
107 for (pos_type p = first; p < last; ++p) {
116 TextMetrics::TextMetrics(BufferView * bv, Text * text)
117 : bv_(bv), text_(text)
120 max_width_ = bv_->workWidth();
121 dim_.wid = max_width_;
125 //text_->updateLabels(bv->buffer());
129 ParagraphMetrics const & TextMetrics::parMetrics(pit_type pit) const
131 return const_cast<TextMetrics *>(this)->parMetrics(pit, true);
135 ParagraphMetrics & TextMetrics::parMetrics(pit_type pit,
138 ParMetricsCache::iterator pmc_it = par_metrics_.find(pit);
139 if (pmc_it == par_metrics_.end()) {
140 pmc_it = par_metrics_.insert(
141 std::make_pair(pit, ParagraphMetrics(text_->getPar(pit)))).first;
143 if (pmc_it->second.rows().empty() && redo) {
146 return pmc_it->second;
150 bool TextMetrics::metrics(MetricsInfo & mi, Dimension & dim)
152 BOOST_ASSERT(mi.base.textwidth);
153 max_width_ = mi.base.textwidth;
154 // backup old dimension.
155 Dimension const old_dim = dim_;
158 pit_type const npar = text_->paragraphs().size();
160 // If there is more than one row, expand the text to
161 // the full allowable width.
162 dim_.wid = max_width_;
164 //lyxerr << "TextMetrics::metrics: width: " << mi.base.textwidth
165 // << " maxWidth: " << max_width_ << "\nfont: " << mi.base.font << endl;
167 bool changed = false;
169 for (pit_type pit = 0; pit != npar; ++pit) {
170 changed |= redoParagraph(pit);
171 ParagraphMetrics const & pm = par_metrics_[pit];
173 if (dim_.wid < pm.width())
174 dim_.wid = pm.width();
177 dim_.asc = par_metrics_[0].ascent();
178 dim_.des = h - dim_.asc;
179 //lyxerr << "dim_.wid " << dim_.wid << endl;
180 //lyxerr << "dim_.asc " << dim_.asc << endl;
181 //lyxerr << "dim_.des " << dim_.des << endl;
183 changed |= dim_ != old_dim;
189 int TextMetrics::rightMargin(ParagraphMetrics const & pm) const
191 return main_text_? pm.rightMargin(bv_->buffer()) : 0;
195 int TextMetrics::rightMargin(pit_type const pit) const
197 return main_text_? par_metrics_[pit].rightMargin(bv_->buffer()) : 0;
201 void TextMetrics::applyOuterFont(Font & font) const
204 lf.reduce(bv_->buffer().params().getFont());
206 lf.setLanguage(font.language());
211 Font TextMetrics::getDisplayFont(pit_type pit, pos_type pos) const
213 BOOST_ASSERT(pos >= 0);
215 ParagraphList const & pars = text_->paragraphs();
216 Paragraph const & par = pars[pit];
217 LayoutPtr const & layout = par.layout();
218 Buffer const & buffer = bv_->buffer();
220 BufferParams const & params = buffer.params();
221 pos_type const body_pos = par.beginOfBody();
223 // We specialize the 95% common case:
224 if (!par.getDepth()) {
225 Font f = par.getFontSettings(params, pos);
226 if (!text_->isMainText(buffer))
228 bool lab = layout->labeltype == LABEL_MANUAL && pos < body_pos;
230 Font const & lf = lab ? layout->labelfont : layout->font;
231 Font rlf = lab ? layout->reslabelfont : layout->resfont;
233 // In case the default family has been customized
234 if (lf.family() == Font::INHERIT_FAMILY)
235 rlf.setFamily(params.getFont().family());
236 return f.realize(rlf);
239 // The uncommon case need not be optimized as much
240 Font const & layoutfont = pos < body_pos ?
241 layout->labelfont : layout->font;
243 Font font = par.getFontSettings(params, pos);
244 font.realize(layoutfont);
246 if (!text_->isMainText(buffer))
247 applyOuterFont(font);
249 // Realize against environment font information
250 // NOTE: the cast to pit_type should be removed when pit_type
251 // changes to a unsigned integer.
252 if (pit < pit_type(pars.size()))
253 font.realize(outerFont(pit, pars));
255 // Realize with the fonts of lesser depth.
256 font.realize(params.getFont());
262 bool TextMetrics::isRTL(CursorSlice const & sl, bool boundary) const
264 if (!lyxrc.rtl_support || !sl.text())
268 if (boundary && sl.pos() > 0)
271 return getDisplayFont(sl.pit(), sl.pos() + correction).isVisibleRightToLeft();
275 bool TextMetrics::isRTLBoundary(pit_type pit, pos_type pos) const
277 if (!lyxrc.rtl_support)
280 // no RTL boundary at line start
284 Paragraph const & par = text_->getPar(pit);
286 bool left = getDisplayFont(pit, pos - 1).isVisibleRightToLeft();
288 if (pos == par.size())
289 right = par.isRTL(bv_->buffer().params());
291 right = getDisplayFont(pit, pos).isVisibleRightToLeft();
292 return left != right;
296 bool TextMetrics::isRTLBoundary(pit_type pit, pos_type pos,
297 Font const & font) const
299 if (!lyxrc.rtl_support)
302 Paragraph const & par = text_->getPar(pit);
303 bool left = font.isVisibleRightToLeft();
305 if (pos == par.size())
306 right = par.isRTL(bv_->buffer().params());
308 right = getDisplayFont(pit, pos).isVisibleRightToLeft();
309 return left != right;
313 bool TextMetrics::redoParagraph(pit_type const pit)
315 Paragraph & par = text_->getPar(pit);
316 // IMPORTANT NOTE: We pass 'false' explicitely in order to not call
317 // redoParagraph() recursively inside parMetrics.
318 Dimension old_dim = parMetrics(pit, false).dim();
319 ParagraphMetrics & pm = par_metrics_[pit];
322 Buffer & buffer = bv_->buffer();
323 BufferParams const & bparams = buffer.params();
324 main_text_ = (text_ == &buffer.text());
325 bool changed = false;
327 // FIXME This check ought to be done somewhere else. It is the reason
328 // why text_ is not const. But then, where else to do it?
329 // Well, how can you end up with either (a) a biblio environment that
330 // has no InsetBibitem or (b) a biblio environment with more than one
331 // InsetBibitem? I think the answer is: when paragraphs are merged;
332 // when layout is set; when material is pasted.
333 int const moveCursor = par.checkBiblio(buffer.params().trackChanges);
335 const_cast<Cursor &>(bv_->cursor()).posRight();
336 else if (moveCursor < 0) {
337 Cursor & cursor = const_cast<Cursor &>(bv_->cursor());
338 if (cursor.pos() >= -moveCursor)
342 // Optimisation: this is used in the next two loops
343 // so better to calculate that once here.
344 int const right_margin = rightMargin(pm);
347 // FIXME: We should always use getFont(), see documentation of
348 // noFontChange() in Inset.h.
349 Font const bufferfont = buffer.params().getFont();
350 InsetList::const_iterator ii = par.insetlist.begin();
351 InsetList::const_iterator iend = par.insetlist.end();
352 for (; ii != iend; ++ii) {
353 Dimension old_dim = ii->inset->dimension();
355 int const w = max_width_ - leftMargin(max_width_, pit, ii->pos)
357 Font const & font = ii->inset->noFontChange() ?
358 bufferfont : getDisplayFont(pit, ii->pos);
359 MetricsInfo mi(bv_, font, w);
360 changed |= ii->inset->metrics(mi, dim);
361 changed |= (old_dim != dim);
364 par.setBeginOfBody();
366 size_t row_index = 0;
367 // maximum pixel width of a row
368 int width = max_width_ - right_margin; // - leftMargin(max_width_, pit, row);
371 pos_type end = rowBreakPoint(width, pit, first);
372 if (row_index || end < par.size())
373 // If there is more than one row, expand the text to
374 // the full allowable width. This setting here is needed
375 // for the computeRowMetrics below().
376 dim_.wid = max_width_;
378 dim.wid = rowWidth(right_margin, pit, first, end);
379 boost::tie(dim.asc, dim.des) = rowHeight(pit, first, end);
380 if (row_index == pm.rows().size())
381 pm.rows().push_back(Row());
382 Row & row = pm.rows()[row_index];
383 row.setChanged(false);
386 row.setDimension(dim);
387 computeRowMetrics(pit, row);
388 pm.computeRowSignature(row, bparams);
392 pm.dim().wid = std::max(pm.dim().wid, dim.wid);
393 pm.dim().des += dim.height();
394 } while (first < par.size());
396 if (row_index < pm.rows().size())
397 pm.rows().resize(row_index);
399 // Make sure that if a par ends in newline, there is one more row
401 if (first > 0 && par.isNewline(first - 1)) {
403 dim.wid = rowWidth(right_margin, pit, first, first);
404 boost::tie(dim.asc, dim.des) = rowHeight(pit, first, first);
405 if (row_index == pm.rows().size())
406 pm.rows().push_back(Row());
407 Row & row = pm.rows()[row_index];
408 row.setChanged(false);
411 row.setDimension(dim);
412 computeRowMetrics(pit, row);
413 pm.computeRowSignature(row, bparams);
414 pm.dim().des += dim.height();
417 pm.dim().asc += pm.rows()[0].ascent();
418 pm.dim().des -= pm.rows()[0].ascent();
420 changed |= old_dim.height() != pm.dim().height();
426 void TextMetrics::computeRowMetrics(pit_type const pit,
434 Buffer & buffer = bv_->buffer();
435 Paragraph const & par = text_->getPar(pit);
437 double w = dim_.wid - row.width();
438 // FIXME: put back this assertion when the crash on new doc is solved.
439 //BOOST_ASSERT(w >= 0);
441 //lyxerr << "\ndim_.wid " << dim_.wid << endl;
442 //lyxerr << "row.width() " << row.width() << endl;
443 //lyxerr << "w " << w << endl;
445 bool const is_rtl = text_->isRTL(buffer, par);
447 row.x = rightMargin(pit);
449 row.x = leftMargin(max_width_, pit, row.pos());
451 // is there a manual margin with a manual label
452 LayoutPtr const & layout = par.layout();
454 if (layout->margintype == MARGIN_MANUAL
455 && layout->labeltype == LABEL_MANUAL) {
456 /// We might have real hfills in the label part
457 int nlh = numberOfLabelHfills(par, row);
459 // A manual label par (e.g. List) has an auto-hfill
460 // between the label text and the body of the
462 // But we don't want to do this auto hfill if the par
467 if (nlh && !par.getLabelWidthString().empty())
468 row.label_hfill = labelFill(pit, row) / double(nlh);
471 // are there any hfills in the row?
472 int const nh = numberOfHfills(par, row);
477 // we don't have to look at the alignment if it is ALIGN_LEFT and
478 // if the row is already larger then the permitted width as then
479 // we force the LEFT_ALIGN'edness!
480 } else if (int(row.width()) < max_width_) {
481 // is it block, flushleft or flushright?
482 // set x how you need it
484 if (par.params().align() == LYX_ALIGN_LAYOUT)
485 align = layout->align;
487 align = par.params().align();
489 // Display-style insets should always be on a centred row
490 // The test on par.size() is to catch zero-size pars, which
491 // would trigger the assert in Paragraph::getInset().
492 //inset = par.size() ? par.getInset(row.pos()) : 0;
493 if (row.pos() < par.size()
494 && par.isInset(row.pos()))
496 switch(par.getInset(row.pos())->display()) {
497 case Inset::AlignLeft:
498 align = LYX_ALIGN_BLOCK;
500 case Inset::AlignCenter:
501 align = LYX_ALIGN_CENTER;
504 case Inset::AlignRight:
505 // unchanged (use align)
511 case LYX_ALIGN_BLOCK: {
512 int const ns = numberOfSeparators(par, row);
513 bool disp_inset = false;
514 if (row.endpos() < par.size()) {
515 Inset const * in = par.getInset(row.endpos());
517 disp_inset = in->display();
519 // If we have separators, this is not the last row of a
520 // par, does not end in newline, and is not row above a
521 // display inset... then stretch it
523 && row.endpos() < par.size()
524 && !par.isNewline(row.endpos() - 1)
527 row.separator = w / ns;
528 //lyxerr << "row.separator " << row.separator << endl;
529 //lyxerr << "ns " << ns << endl;
535 case LYX_ALIGN_RIGHT:
538 case LYX_ALIGN_CENTER:
545 pos_type body_pos = par.beginOfBody();
546 pos_type end = row.endpos();
549 && (body_pos > end || !par.isLineSeparator(body_pos - 1)))
551 row.x += theFontMetrics(text_->getLabelFont(buffer, par)).
552 width(layout->labelsep);
554 row.x += row.label_hfill;
560 int TextMetrics::labelFill(pit_type const pit, Row const & row) const
562 Buffer & buffer = bv_->buffer();
563 Paragraph const & par = text_->getPar(pit);
565 pos_type last = par.beginOfBody();
566 BOOST_ASSERT(last > 0);
568 // -1 because a label ends with a space that is in the label
571 // a separator at this end does not count
572 if (par.isLineSeparator(last))
576 for (pos_type i = row.pos(); i <= last; ++i)
577 w += singleWidth(pit, i);
579 docstring const & label = par.params().labelWidthString();
583 FontMetrics const & fm
584 = theFontMetrics(text_->getLabelFont(buffer, par));
586 return max(0, fm.width(label) - w);
592 // this needs special handling - only newlines count as a break point
593 pos_type addressBreakPoint(pos_type i, Paragraph const & par)
595 pos_type const end = par.size();
598 if (par.isNewline(i))
607 int TextMetrics::labelEnd(pit_type const pit) const
609 // labelEnd is only needed if the layout fills a flushleft label.
610 if (text_->getPar(pit).layout()->margintype != MARGIN_MANUAL)
612 // return the beginning of the body
613 return leftMargin(max_width_, pit);
617 pit_type TextMetrics::rowBreakPoint(int width, pit_type const pit,
620 Buffer & buffer = bv_->buffer();
621 ParagraphMetrics const & pm = par_metrics_[pit];
622 Paragraph const & par = text_->getPar(pit);
623 pos_type const end = par.size();
624 if (pos == end || width < 0)
627 LayoutPtr const & layout = par.layout();
629 if (layout->margintype == MARGIN_RIGHT_ADDRESS_BOX)
630 return addressBreakPoint(pos, par);
632 pos_type const body_pos = par.beginOfBody();
635 // Now we iterate through until we reach the right margin
636 // or the end of the par, then choose the possible break
639 int label_end = labelEnd(pit);
640 int const left = leftMargin(max_width_, pit, pos);
643 // pixel width since last breakpoint
646 FontIterator fi = FontIterator(*this, par, pit, pos);
647 pos_type point = end;
649 for ( ; i < end; ++i, ++fi) {
650 int thiswidth = pm.singleWidth(i, *fi);
652 // add the auto-hfill from label end to the body
653 if (body_pos && i == body_pos) {
654 FontMetrics const & fm = theFontMetrics(
655 text_->getLabelFont(buffer, par));
656 int add = fm.width(layout->labelsep);
657 if (par.isLineSeparator(i - 1))
658 add -= singleWidth(pit, i - 1);
660 add = std::max(add, label_end - x);
665 chunkwidth += thiswidth;
667 // break before a character that will fall off
668 // the right of the row
670 // if no break before, break here
671 if (point == end || chunkwidth >= width - left) {
678 // exit on last registered breakpoint:
682 if (par.isNewline(i)) {
688 if (par.isInset(i + 1) && par.getInset(i + 1)->display()) {
693 if (par.isInset(i) && par.getInset(i)->display()) {
699 if (!par.isInset(i) || par.getInset(i)->isChar()) {
700 // some insets are line separators too
701 if (par.isLineSeparator(i)) {
702 // register breakpoint:
709 // maybe found one, but the par is short enough.
710 if (i == end && x < width)
713 // manual labels cannot be broken in LaTeX. But we
714 // want to make our on-screen rendering of footnotes
716 if (body_pos && point < body_pos)
723 int TextMetrics::rowWidth(int right_margin, pit_type const pit,
724 pos_type const first, pos_type const end) const
726 Buffer & buffer = bv_->buffer();
727 // get the pure distance
728 ParagraphMetrics const & pm = par_metrics_[pit];
729 Paragraph const & par = text_->getPar(pit);
730 int w = leftMargin(max_width_, pit, first);
731 int label_end = labelEnd(pit);
733 pos_type const body_pos = par.beginOfBody();
737 FontIterator fi = FontIterator(*this, par, pit, i);
738 for ( ; i < end; ++i, ++fi) {
739 if (body_pos > 0 && i == body_pos) {
740 FontMetrics const & fm = theFontMetrics(
741 text_->getLabelFont(buffer, par));
742 w += fm.width(par.layout()->labelsep);
743 if (par.isLineSeparator(i - 1))
744 w -= singleWidth(pit, i - 1);
745 w = max(w, label_end);
747 w += pm.singleWidth(i, *fi);
751 if (body_pos > 0 && body_pos >= end) {
752 FontMetrics const & fm = theFontMetrics(
753 text_->getLabelFont(buffer, par));
754 w += fm.width(par.layout()->labelsep);
755 if (end > 0 && par.isLineSeparator(end - 1))
756 w -= singleWidth(pit, end - 1);
757 w = max(w, label_end);
760 return w + right_margin;
764 boost::tuple<int, int> TextMetrics::rowHeight(pit_type const pit, pos_type const first,
765 pos_type const end) const
767 Paragraph const & par = text_->getPar(pit);
768 // get the maximum ascent and the maximum descent
769 double layoutasc = 0;
770 double layoutdesc = 0;
771 double const dh = defaultRowHeight();
773 // ok, let us initialize the maxasc and maxdesc value.
774 // Only the fontsize count. The other properties
775 // are taken from the layoutfont. Nicer on the screen :)
776 LayoutPtr const & layout = par.layout();
778 // as max get the first character of this row then it can
779 // increase but not decrease the height. Just some point to
780 // start with so we don't have to do the assignment below too
782 Buffer const & buffer = bv_->buffer();
783 Font font = getDisplayFont(pit, first);
784 Font::FONT_SIZE const tmpsize = font.size();
785 font = text_->getLayoutFont(buffer, pit);
786 Font::FONT_SIZE const size = font.size();
787 font.setSize(tmpsize);
789 Font labelfont = text_->getLabelFont(buffer, par);
791 FontMetrics const & labelfont_metrics = theFontMetrics(labelfont);
792 FontMetrics const & fontmetrics = theFontMetrics(font);
794 // these are minimum values
795 double const spacing_val = layout->spacing.getValue()
796 * text_->spacing(buffer, par);
797 //lyxerr << "spacing_val = " << spacing_val << endl;
798 int maxasc = int(fontmetrics.maxAscent() * spacing_val);
799 int maxdesc = int(fontmetrics.maxDescent() * spacing_val);
801 // insets may be taller
802 InsetList::const_iterator ii = par.insetlist.begin();
803 InsetList::const_iterator iend = par.insetlist.end();
804 for ( ; ii != iend; ++ii) {
805 if (ii->pos >= first && ii->pos < end) {
806 maxasc = max(maxasc, ii->inset->ascent());
807 maxdesc = max(maxdesc, ii->inset->descent());
811 // Check if any custom fonts are larger (Asger)
812 // This is not completely correct, but we can live with the small,
813 // cosmetic error for now.
816 Font::FONT_SIZE maxsize =
817 par.highestFontInRange(first, end, size);
818 if (maxsize > font.size()) {
819 // use standard paragraph font with the maximal size
821 maxfont.setSize(maxsize);
822 FontMetrics const & maxfontmetrics = theFontMetrics(maxfont);
823 maxasc = max(maxasc, maxfontmetrics.maxAscent());
824 maxdesc = max(maxdesc, maxfontmetrics.maxDescent());
827 // This is nicer with box insets:
831 ParagraphList const & pars = text_->paragraphs();
835 BufferParams const & bufparams = buffer.params();
836 // some parskips VERY EASY IMPLEMENTATION
837 if (bufparams.paragraph_separation
838 == BufferParams::PARSEP_SKIP
839 && par.ownerCode() != Inset::ERT_CODE
840 && par.ownerCode() != Inset::LISTINGS_CODE
842 && ((layout->isParagraph() && par.getDepth() == 0)
843 || (pars[pit - 1].layout()->isParagraph()
844 && pars[pit - 1].getDepth() == 0)))
846 maxasc += bufparams.getDefSkip().inPixels(*bv_);
849 if (par.params().startOfAppendix())
850 maxasc += int(3 * dh);
852 // This is special code for the chapter, since the label of this
853 // layout is printed in an extra row
854 if (layout->counter == "chapter"
855 && !par.params().labelString().empty()) {
856 labeladdon = int(labelfont_metrics.maxHeight()
857 * layout->spacing.getValue()
858 * text_->spacing(buffer, par));
861 // special code for the top label
862 if ((layout->labeltype == LABEL_TOP_ENVIRONMENT
863 || layout->labeltype == LABEL_BIBLIO
864 || layout->labeltype == LABEL_CENTERED_TOP_ENVIRONMENT)
865 && isFirstInSequence(pit, pars)
866 && !par.getLabelstring().empty())
869 labelfont_metrics.maxHeight()
870 * layout->spacing.getValue()
871 * text_->spacing(buffer, par)
872 + (layout->topsep + layout->labelbottomsep) * dh);
875 // Add the layout spaces, for example before and after
876 // a section, or between the items of a itemize or enumerate
879 pit_type prev = depthHook(pit, pars, par.getDepth());
880 Paragraph const & prevpar = pars[prev];
882 && prevpar.layout() == layout
883 && prevpar.getDepth() == par.getDepth()
884 && prevpar.getLabelWidthString()
885 == par.getLabelWidthString()) {
886 layoutasc = layout->itemsep * dh;
887 } else if (pit != 0 || first != 0) {
888 if (layout->topsep > 0)
889 layoutasc = layout->topsep * dh;
892 prev = outerHook(pit, pars);
893 if (prev != pit_type(pars.size())) {
894 maxasc += int(pars[prev].layout()->parsep * dh);
895 } else if (pit != 0) {
896 Paragraph const & prevpar = pars[pit - 1];
897 if (prevpar.getDepth() != 0 ||
898 prevpar.layout() == layout) {
899 maxasc += int(layout->parsep * dh);
904 // is it a bottom line?
905 if (end >= par.size()) {
906 // add the layout spaces, for example before and after
907 // a section, or between the items of a itemize or enumerate
909 pit_type nextpit = pit + 1;
910 if (nextpit != pit_type(pars.size())) {
915 if (pars[cpit].getDepth() > pars[nextpit].getDepth()) {
916 usual = pars[cpit].layout()->bottomsep * dh;
917 cpit = depthHook(cpit, pars, pars[nextpit].getDepth());
918 if (pars[cpit].layout() != pars[nextpit].layout()
919 || pars[nextpit].getLabelWidthString() != pars[cpit].getLabelWidthString())
921 unusual = pars[cpit].layout()->bottomsep * dh;
923 layoutdesc = max(unusual, usual);
924 } else if (pars[cpit].getDepth() == pars[nextpit].getDepth()) {
925 if (pars[cpit].layout() != pars[nextpit].layout()
926 || pars[nextpit].getLabelWidthString() != pars[cpit].getLabelWidthString())
927 layoutdesc = int(pars[cpit].layout()->bottomsep * dh);
932 // incalculate the layout spaces
933 maxasc += int(layoutasc * 2 / (2 + pars[pit].getDepth()));
934 maxdesc += int(layoutdesc * 2 / (2 + pars[pit].getDepth()));
936 // FIXME: the correct way is to do the following is to move the
937 // following code in another method specially tailored for the
938 // main Text. The following test is thus bogus.
939 // Top and bottom margin of the document (only at top-level)
941 if (pit == 0 && first == 0)
943 if (pit + 1 == pit_type(pars.size()) &&
945 !(end > 0 && par.isNewline(end - 1)))
949 return boost::make_tuple(maxasc + labeladdon, maxdesc);
953 // x is an absolute screen coord
954 // returns the column near the specified x-coordinate of the row
955 // x is set to the real beginning of this column
956 pos_type TextMetrics::getColumnNearX(pit_type const pit,
957 Row const & row, int & x, bool & boundary) const
959 Buffer const & buffer = bv_->buffer();
961 /// For the main Text, it is possible that this pit is not
962 /// yet in the CoordCache when moving cursor up.
963 /// x Paragraph coordinate is always 0 for main text anyway.
964 int const xo = main_text_? 0 : bv_->coordCache().get(text_, pit).x_;
966 Paragraph const & par = text_->getPar(pit);
967 ParagraphMetrics const & pm = par_metrics_[pit];
969 bidi.computeTables(par, buffer, row);
971 pos_type vc = row.pos();
972 pos_type end = row.endpos();
974 LayoutPtr const & layout = par.layout();
976 bool left_side = false;
978 pos_type body_pos = par.beginOfBody();
981 double last_tmpx = tmpx;
984 (body_pos > end || !par.isLineSeparator(body_pos - 1)))
987 // check for empty row
993 while (vc < end && tmpx <= x) {
994 c = bidi.vis2log(vc);
996 if (body_pos > 0 && c == body_pos - 1) {
997 FontMetrics const & fm = theFontMetrics(
998 text_->getLabelFont(buffer, par));
999 tmpx += row.label_hfill + fm.width(layout->labelsep);
1000 if (par.isLineSeparator(body_pos - 1))
1001 tmpx -= singleWidth(pit, body_pos - 1);
1004 if (pm.hfillExpansion(row, c)) {
1005 tmpx += singleWidth(pit, c);
1009 tmpx += row.label_hfill;
1010 } else if (par.isSeparator(c)) {
1011 tmpx += singleWidth(pit, c);
1013 tmpx += row.separator;
1015 tmpx += singleWidth(pit, c);
1020 if ((tmpx + last_tmpx) / 2 > x) {
1025 BOOST_ASSERT(vc <= end); // This shouldn't happen.
1028 // This (rtl_support test) is not needed, but gives
1029 // some speedup if rtl_support == false
1030 bool const lastrow = lyxrc.rtl_support && row.endpos() == par.size();
1032 // If lastrow is false, we don't need to compute
1033 // the value of rtl.
1034 bool const rtl = lastrow ? text_->isRTL(buffer, par) : false;
1036 ((rtl && left_side && vc == row.pos() && x < tmpx - 5) ||
1037 (!rtl && !left_side && vc == end && x > tmpx + 5)))
1039 else if (vc == row.pos()) {
1040 c = bidi.vis2log(vc);
1041 if (bidi.level(c) % 2 == 1)
1044 c = bidi.vis2log(vc - 1);
1045 bool const rtl = (bidi.level(c) % 2 == 1);
1046 if (left_side == rtl) {
1048 boundary = isRTLBoundary(pit, c);
1052 // I believe this code is not needed anymore (Jug 20050717)
1054 // The following code is necessary because the cursor position past
1055 // the last char in a row is logically equivalent to that before
1056 // the first char in the next row. That's why insets causing row
1057 // divisions -- Newline and display-style insets -- must be treated
1058 // specially, so cursor up/down doesn't get stuck in an air gap -- MV
1059 // Newline inset, air gap below:
1060 if (row.pos() < end && c >= end && par.isNewline(end - 1)) {
1061 if (bidi.level(end -1) % 2 == 0)
1062 tmpx -= singleWidth(pit, end - 1);
1064 tmpx += singleWidth(pit, end - 1);
1068 // Air gap above display inset:
1069 if (row.pos() < end && c >= end && end < par.size()
1070 && par.isInset(end) && par.getInset(end)->display()) {
1073 // Air gap below display inset:
1074 if (row.pos() < end && c >= end && par.isInset(end - 1)
1075 && par.getInset(end - 1)->display()) {
1081 pos_type const col = c - row.pos();
1083 if (!c || end == par.size())
1086 if (c==end && !par.isLineSeparator(c-1) && !par.isNewline(c-1)) {
1091 return min(col, end - 1 - row.pos());
1095 pos_type TextMetrics::x2pos(pit_type pit, int row, int x) const
1097 ParagraphMetrics const & pm = par_metrics_[pit];
1098 BOOST_ASSERT(!pm.rows().empty());
1099 BOOST_ASSERT(row < int(pm.rows().size()));
1101 Row const & r = pm.rows()[row];
1102 return r.pos() + getColumnNearX(pit, r, x, bound);
1106 // y is screen coordinate
1107 pit_type TextMetrics::getPitNearY(int y)
1109 BOOST_ASSERT(!text_->paragraphs().empty());
1110 BOOST_ASSERT(bv_->coordCache().getParPos().find(text_) != bv_->coordCache().getParPos().end());
1111 CoordCache::InnerParPosCache const & cc = bv_->coordCache().getParPos().find(text_)->second;
1112 LYXERR(Debug::DEBUG)
1113 << BOOST_CURRENT_FUNCTION
1114 << ": y: " << y << " cache size: " << cc.size()
1117 // look for highest numbered paragraph with y coordinate less than given y
1120 CoordCache::InnerParPosCache::const_iterator it = cc.begin();
1121 CoordCache::InnerParPosCache::const_iterator et = cc.end();
1122 CoordCache::InnerParPosCache::const_iterator last = et; last--;
1124 ParagraphMetrics const & pm = par_metrics_[it->first];
1126 // If we are off-screen (before the visible part)
1128 // and even before the first paragraph in the cache.
1129 && y < it->second.y_ - int(pm.ascent())) {
1130 // and we are not at the first paragraph in the inset.
1133 // then this is the paragraph we are looking for.
1134 pit = it->first - 1;
1135 // rebreak it and update the CoordCache.
1137 bv_->coordCache().parPos()[text_][pit] =
1138 Point(0, it->second.y_ - pm.descent());
1142 ParagraphMetrics const & pm_last = par_metrics_[last->first];
1144 // If we are off-screen (after the visible part)
1145 if (y > bv_->workHeight()
1146 // and even after the first paragraph in the cache.
1147 && y >= last->second.y_ + int(pm_last.descent())) {
1148 pit = last->first + 1;
1149 // and we are not at the last paragraph in the inset.
1150 if (pit == int(text_->paragraphs().size()))
1152 // then this is the paragraph we are looking for.
1153 // rebreak it and update the CoordCache.
1155 bv_->coordCache().parPos()[text_][pit] =
1156 Point(0, last->second.y_ + pm_last.ascent());
1160 for (; it != et; ++it) {
1161 LYXERR(Debug::DEBUG)
1162 << BOOST_CURRENT_FUNCTION
1163 << " examining: pit: " << it->first
1164 << " y: " << it->second.y_
1167 ParagraphMetrics const & pm = par_metrics_[it->first];
1169 if (it->first >= pit && int(it->second.y_) - int(pm.ascent()) <= y) {
1175 LYXERR(Debug::DEBUG)
1176 << BOOST_CURRENT_FUNCTION
1177 << ": found best y: " << yy << " for pit: " << pit
1184 Row const & TextMetrics::getRowNearY(int y, pit_type pit) const
1186 ParagraphMetrics const & pm = par_metrics_[pit];
1188 int yy = bv_->coordCache().get(text_, pit).y_ - pm.ascent();
1189 BOOST_ASSERT(!pm.rows().empty());
1190 RowList::const_iterator rit = pm.rows().begin();
1191 RowList::const_iterator const rlast = boost::prior(pm.rows().end());
1192 for (; rit != rlast; yy += rit->height(), ++rit)
1193 if (yy + rit->height() > y)
1199 // x,y are absolute screen coordinates
1200 // sets cursor recursively descending into nested editable insets
1201 Inset * TextMetrics::editXY(Cursor & cur, int x, int y)
1203 if (lyxerr.debugging(Debug::WORKAREA)) {
1204 lyxerr << "TextMetrics::editXY(cur, " << x << ", " << y << ")" << std::endl;
1205 cur.bv().coordCache().dump();
1207 pit_type pit = getPitNearY(y);
1208 BOOST_ASSERT(pit != -1);
1210 Row const & row = getRowNearY(y, pit);
1213 int xx = x; // is modified by getColumnNearX
1214 pos_type const pos = row.pos()
1215 + getColumnNearX(pit, row, xx, bound);
1218 cur.boundary(bound);
1221 // try to descend into nested insets
1222 Inset * inset = checkInsetHit(x, y);
1223 //lyxerr << "inset " << inset << " hit at x: " << x << " y: " << y << endl;
1225 // Either we deconst editXY or better we move current_font
1226 // and real_current_font to Cursor
1227 // FIXME: what is needed now that current_font and real_current_font
1229 cur.setCurrentFont();
1233 ParagraphList const & pars = text_->paragraphs();
1234 Inset const * insetBefore = pos? pars[pit].getInset(pos - 1): 0;
1235 //Inset * insetBehind = pars[pit].getInset(pos);
1237 // This should be just before or just behind the
1238 // cursor position set above.
1239 BOOST_ASSERT((pos != 0 && inset == insetBefore)
1240 || inset == pars[pit].getInset(pos));
1242 // Make sure the cursor points to the position before
1244 if (inset == insetBefore) {
1246 cur.boundary(false);
1249 // Try to descend recursively inside the inset.
1250 inset = inset->editXY(cur, x, y);
1252 if (cur.top().text() == text_)
1253 cur.setCurrentFont();
1258 void TextMetrics::setCursorFromCoordinates(Cursor & cur, int const x, int const y)
1260 BOOST_ASSERT(text_ == cur.text());
1261 pit_type pit = getPitNearY(y);
1263 ParagraphMetrics const & pm = par_metrics_[pit];
1265 int yy = bv_->coordCache().get(text_, pit).y_ - pm.ascent();
1266 LYXERR(Debug::DEBUG)
1267 << BOOST_CURRENT_FUNCTION
1271 << " yy: " << yy << endl;
1274 BOOST_ASSERT(pm.rows().size());
1275 for (; r < int(pm.rows().size()) - 1; ++r) {
1276 Row const & row = pm.rows()[r];
1277 if (int(yy + row.height()) > y)
1282 Row const & row = pm.rows()[r];
1284 LYXERR(Debug::DEBUG)
1285 << BOOST_CURRENT_FUNCTION
1287 << " from pos: " << row.pos()
1292 pos_type const pos = row.pos() + getColumnNearX(pit, row, xx, bound);
1294 LYXERR(Debug::DEBUG)
1295 << BOOST_CURRENT_FUNCTION
1296 << ": setting cursor pit: " << pit
1300 text_->setCursor(cur, pit, pos, true, bound);
1301 // remember new position.
1306 //takes screen x,y coordinates
1307 Inset * TextMetrics::checkInsetHit(int x, int y)
1309 pit_type pit = getPitNearY(y);
1310 BOOST_ASSERT(pit != -1);
1312 Paragraph const & par = text_->paragraphs()[pit];
1314 LYXERR(Debug::DEBUG)
1315 << BOOST_CURRENT_FUNCTION
1320 InsetList::const_iterator iit = par.insetlist.begin();
1321 InsetList::const_iterator iend = par.insetlist.end();
1322 for (; iit != iend; ++iit) {
1323 Inset * inset = iit->inset;
1325 LYXERR(Debug::DEBUG)
1326 << BOOST_CURRENT_FUNCTION
1327 << ": examining inset " << inset << endl;
1329 if (bv_->coordCache().getInsets().has(inset))
1330 LYXERR(Debug::DEBUG)
1331 << BOOST_CURRENT_FUNCTION
1332 << ": xo: " << inset->xo(*bv_) << "..."
1333 << inset->xo(*bv_) + inset->width()
1334 << " yo: " << inset->yo(*bv_) - inset->ascent()
1336 << inset->yo(*bv_) + inset->descent()
1339 LYXERR(Debug::DEBUG)
1340 << BOOST_CURRENT_FUNCTION
1341 << ": inset has no cached position" << endl;
1343 if (inset->covers(*bv_, x, y)) {
1344 LYXERR(Debug::DEBUG)
1345 << BOOST_CURRENT_FUNCTION
1346 << ": Hit inset: " << inset << endl;
1350 LYXERR(Debug::DEBUG)
1351 << BOOST_CURRENT_FUNCTION
1352 << ": No inset hit. " << endl;
1357 int TextMetrics::cursorX(CursorSlice const & sl,
1358 bool boundary) const
1360 BOOST_ASSERT(sl.text() == text_);
1361 pit_type const pit = sl.pit();
1362 Paragraph const & par = text_->paragraphs()[pit];
1363 ParagraphMetrics const & pm = par_metrics_[pit];
1364 if (pm.rows().empty())
1367 pos_type ppos = sl.pos();
1368 // Correct position in front of big insets
1369 bool const boundary_correction = ppos != 0 && boundary;
1370 if (boundary_correction)
1373 Row const & row = pm.getRow(sl.pos(), boundary);
1375 pos_type cursor_vpos = 0;
1377 Buffer const & buffer = bv_->buffer();
1380 bidi.computeTables(par, buffer, row);
1382 pos_type const row_pos = row.pos();
1383 pos_type const end = row.endpos();
1384 // Spaces at logical line breaks in bidi text must be skipped during
1385 // cursor positioning. However, they may appear visually in the middle
1386 // of a row; they must be skipped, wherever they are...
1387 // * logically "abc_[HEBREW_\nHEBREW]"
1388 // * visually "abc_[_WERBEH\nWERBEH]"
1389 pos_type skipped_sep_vpos = -1;
1392 cursor_vpos = row_pos;
1393 else if (ppos >= end)
1394 cursor_vpos = text_->isRTL(buffer, par) ? row_pos : end;
1395 else if (ppos > row_pos && ppos >= end)
1396 // Place cursor after char at (logical) position pos - 1
1397 cursor_vpos = (bidi.level(ppos - 1) % 2 == 0)
1398 ? bidi.log2vis(ppos - 1) + 1 : bidi.log2vis(ppos - 1);
1400 // Place cursor before char at (logical) position ppos
1401 cursor_vpos = (bidi.level(ppos) % 2 == 0)
1402 ? bidi.log2vis(ppos) : bidi.log2vis(ppos) + 1;
1404 pos_type body_pos = par.beginOfBody();
1406 (body_pos > end || !par.isLineSeparator(body_pos - 1)))
1409 // Use font span to speed things up, see below
1413 // If the last logical character is a separator, skip it, unless
1414 // it's in the last row of a paragraph; see skipped_sep_vpos declaration
1415 if (end > 0 && end < par.size() && par.isSeparator(end - 1))
1416 skipped_sep_vpos = bidi.log2vis(end - 1);
1418 for (pos_type vpos = row_pos; vpos < cursor_vpos; ++vpos) {
1419 // Skip the separator which is at the logical end of the row
1420 if (vpos == skipped_sep_vpos)
1422 pos_type pos = bidi.vis2log(vpos);
1423 if (body_pos > 0 && pos == body_pos - 1) {
1424 FontMetrics const & labelfm = theFontMetrics(
1425 text_->getLabelFont(buffer, par));
1426 x += row.label_hfill + labelfm.width(par.layout()->labelsep);
1427 if (par.isLineSeparator(body_pos - 1))
1428 x -= singleWidth(pit, body_pos - 1);
1431 // Use font span to speed things up, see above
1432 if (pos < font_span.first || pos > font_span.last) {
1433 font_span = par.fontSpan(pos);
1434 font = getDisplayFont(pit, pos);
1437 x += pm.singleWidth(pos, font);
1439 if (pm.hfillExpansion(row, pos))
1440 x += (pos >= body_pos) ? row.hfill : row.label_hfill;
1441 else if (par.isSeparator(pos) && pos >= body_pos)
1445 // see correction above
1446 if (boundary_correction) {
1447 if (isRTL(sl, boundary))
1448 x -= singleWidth(pit, ppos);
1450 x += singleWidth(pit, ppos);
1457 int TextMetrics::cursorY(CursorSlice const & sl, bool boundary) const
1459 //lyxerr << "TextMetrics::cursorY: boundary: " << boundary << std::endl;
1460 ParagraphMetrics const & pm = par_metrics_[sl.pit()];
1461 if (pm.rows().empty())
1465 h -= par_metrics_[0].rows()[0].ascent();
1466 for (pit_type pit = 0; pit < sl.pit(); ++pit) {
1467 h += par_metrics_[pit].height();
1470 if (pos && boundary)
1472 size_t const rend = pm.pos2row(pos);
1473 for (size_t rit = 0; rit != rend; ++rit)
1474 h += pm.rows()[rit].height();
1475 h += pm.rows()[rend].ascent();
1480 void TextMetrics::cursorPrevious(Cursor & cur)
1482 pos_type cpos = cur.pos();
1483 pit_type cpar = cur.pit();
1485 int x = cur.x_target();
1486 setCursorFromCoordinates(cur, x, 0);
1487 cur.dispatch(FuncRequest(cur.selection()? LFUN_UP_SELECT: LFUN_UP));
1489 if (cpar == cur.pit() && cpos == cur.pos())
1490 // we have a row which is taller than the workarea. The
1491 // simplest solution is to move to the previous row instead.
1492 cur.dispatch(FuncRequest(cur.selection()? LFUN_UP_SELECT: LFUN_UP));
1495 cur.updateFlags(Update::Force | Update::FitCursor);
1499 void TextMetrics::cursorNext(Cursor & cur)
1501 pos_type cpos = cur.pos();
1502 pit_type cpar = cur.pit();
1504 int x = cur.x_target();
1505 setCursorFromCoordinates(cur, x, cur.bv().workHeight() - 1);
1506 cur.dispatch(FuncRequest(cur.selection()? LFUN_DOWN_SELECT: LFUN_DOWN));
1508 if (cpar == cur.pit() && cpos == cur.pos())
1509 // we have a row which is taller than the workarea. The
1510 // simplest solution is to move to the next row instead.
1512 FuncRequest(cur.selection()? LFUN_DOWN_SELECT: LFUN_DOWN));
1515 cur.updateFlags(Update::Force | Update::FitCursor);
1519 // the cursor set functions have a special mechanism. When they
1520 // realize you left an empty paragraph, they will delete it.
1522 bool TextMetrics::cursorHome(Cursor & cur)
1524 BOOST_ASSERT(text_ == cur.text());
1525 ParagraphMetrics const & pm = par_metrics_[cur.pit()];
1526 Row const & row = pm.getRow(cur.pos(),cur.boundary());
1527 return text_->setCursor(cur, cur.pit(), row.pos());
1531 bool TextMetrics::cursorEnd(Cursor & cur)
1533 BOOST_ASSERT(text_ == cur.text());
1534 // if not on the last row of the par, put the cursor before
1535 // the final space exept if I have a spanning inset or one string
1536 // is so long that we force a break.
1537 pos_type end = cur.textRow().endpos();
1539 // empty text, end-1 is no valid position
1541 bool boundary = false;
1542 if (end != cur.lastpos()) {
1543 if (!cur.paragraph().isLineSeparator(end-1)
1544 && !cur.paragraph().isNewline(end-1))
1549 return text_->setCursor(cur, cur.pit(), end, true, boundary);
1553 void TextMetrics::deleteLineForward(Cursor & cur)
1555 BOOST_ASSERT(text_ == cur.text());
1556 if (cur.lastpos() == 0) {
1557 // Paragraph is empty, so we just go to the right
1558 text_->cursorRight(cur);
1561 cur.selection() = true; // to avoid deletion
1564 // What is this test for ??? (JMarc)
1565 if (!cur.selection())
1566 text_->deleteWordForward(cur);
1568 cap::cutSelection(cur, true, false);
1569 checkBufferStructure(cur.buffer(), cur);
1574 bool TextMetrics::isLastRow(pit_type pit, Row const & row) const
1576 ParagraphList const & pars = text_->paragraphs();
1577 return row.endpos() >= pars[pit].size()
1578 && pit + 1 == pit_type(pars.size());
1582 bool TextMetrics::isFirstRow(pit_type pit, Row const & row) const
1584 return row.pos() == 0 && pit == 0;
1588 int TextMetrics::leftMargin(int max_width, pit_type pit) const
1590 BOOST_ASSERT(pit >= 0);
1591 BOOST_ASSERT(pit < int(text_->paragraphs().size()));
1592 return leftMargin(max_width, pit, text_->paragraphs()[pit].size());
1596 int TextMetrics::leftMargin(int max_width,
1597 pit_type const pit, pos_type const pos) const
1599 ParagraphList const & pars = text_->paragraphs();
1601 BOOST_ASSERT(pit >= 0);
1602 BOOST_ASSERT(pit < int(pars.size()));
1603 Paragraph const & par = pars[pit];
1604 BOOST_ASSERT(pos >= 0);
1605 BOOST_ASSERT(pos <= par.size());
1606 Buffer const & buffer = bv_->buffer();
1607 //lyxerr << "TextMetrics::leftMargin: pit: " << pit << " pos: " << pos << endl;
1608 TextClass const & tclass = buffer.params().getTextClass();
1609 LayoutPtr const & layout = par.layout();
1611 docstring parindent = layout->parindent;
1615 if (text_->isMainText(buffer))
1616 l_margin += changebarMargin();
1618 l_margin += theFontMetrics(buffer.params().getFont()).signedWidth(
1619 tclass.leftmargin());
1621 if (par.getDepth() != 0) {
1622 // find the next level paragraph
1623 pit_type newpar = outerHook(pit, pars);
1624 if (newpar != pit_type(pars.size())) {
1625 if (pars[newpar].layout()->isEnvironment()) {
1626 l_margin = leftMargin(max_width, newpar);
1628 if (par.layout() == tclass.defaultLayout()) {
1629 if (pars[newpar].params().noindent())
1632 parindent = pars[newpar].layout()->parindent;
1637 // This happens after sections in standard classes. The 1.3.x
1638 // code compared depths too, but it does not seem necessary
1640 if (par.layout() == tclass.defaultLayout()
1641 && pit > 0 && pars[pit - 1].layout()->nextnoindent)
1644 Font const labelfont = text_->getLabelFont(buffer, par);
1645 FontMetrics const & labelfont_metrics = theFontMetrics(labelfont);
1647 switch (layout->margintype) {
1648 case MARGIN_DYNAMIC:
1649 if (!layout->leftmargin.empty()) {
1650 l_margin += theFontMetrics(buffer.params().getFont()).signedWidth(
1651 layout->leftmargin);
1653 if (!par.getLabelstring().empty()) {
1654 l_margin += labelfont_metrics.signedWidth(layout->labelindent);
1655 l_margin += labelfont_metrics.width(par.getLabelstring());
1656 l_margin += labelfont_metrics.width(layout->labelsep);
1660 case MARGIN_MANUAL: {
1661 l_margin += labelfont_metrics.signedWidth(layout->labelindent);
1662 // The width of an empty par, even with manual label, should be 0
1663 if (!par.empty() && pos >= par.beginOfBody()) {
1664 if (!par.getLabelWidthString().empty()) {
1665 docstring labstr = par.getLabelWidthString();
1666 l_margin += labelfont_metrics.width(labstr);
1667 l_margin += labelfont_metrics.width(layout->labelsep);
1673 case MARGIN_STATIC: {
1674 l_margin += theFontMetrics(buffer.params().getFont()).
1675 signedWidth(layout->leftmargin) * 4 / (par.getDepth() + 4);
1679 case MARGIN_FIRST_DYNAMIC:
1680 if (layout->labeltype == LABEL_MANUAL) {
1681 if (pos >= par.beginOfBody()) {
1682 l_margin += labelfont_metrics.signedWidth(layout->leftmargin);
1684 l_margin += labelfont_metrics.signedWidth(layout->labelindent);
1687 // Special case to fix problems with
1689 || (layout->labeltype == LABEL_STATIC
1690 && layout->latextype == LATEX_ENVIRONMENT
1691 && !isFirstInSequence(pit, pars))) {
1692 l_margin += labelfont_metrics.signedWidth(layout->leftmargin);
1693 } else if (layout->labeltype != LABEL_TOP_ENVIRONMENT
1694 && layout->labeltype != LABEL_BIBLIO
1695 && layout->labeltype !=
1696 LABEL_CENTERED_TOP_ENVIRONMENT) {
1697 l_margin += labelfont_metrics.signedWidth(layout->labelindent);
1698 l_margin += labelfont_metrics.width(layout->labelsep);
1699 l_margin += labelfont_metrics.width(par.getLabelstring());
1703 case MARGIN_RIGHT_ADDRESS_BOX: {
1705 // ok, a terrible hack. The left margin depends on the widest
1706 // row in this paragraph.
1707 RowList::iterator rit = par.rows().begin();
1708 RowList::iterator end = par.rows().end();
1709 // FIXME: This is wrong.
1710 int minfill = max_width;
1711 for ( ; rit != end; ++rit)
1712 if (rit->fill() < minfill)
1713 minfill = rit->fill();
1714 l_margin += theFontMetrics(params.getFont()).signedWidth(layout->leftmargin);
1715 l_margin += minfill;
1717 // also wrong, but much shorter.
1718 l_margin += max_width / 2;
1723 if (!par.params().leftIndent().zero())
1724 l_margin += par.params().leftIndent().inPixels(max_width);
1728 if (par.params().align() == LYX_ALIGN_LAYOUT)
1729 align = layout->align;
1731 align = par.params().align();
1733 // set the correct parindent
1735 && (layout->labeltype == LABEL_NO_LABEL
1736 || layout->labeltype == LABEL_TOP_ENVIRONMENT
1737 || layout->labeltype == LABEL_CENTERED_TOP_ENVIRONMENT
1738 || (layout->labeltype == LABEL_STATIC
1739 && layout->latextype == LATEX_ENVIRONMENT
1740 && !isFirstInSequence(pit, pars)))
1741 && align == LYX_ALIGN_BLOCK
1742 && !par.params().noindent()
1743 // in some insets, paragraphs are never indented
1744 && !(par.inInset() && par.inInset()->neverIndent(buffer))
1745 // display style insets are always centered, omit indentation
1748 && par.getInset(pos)->display())
1749 && (par.layout() != tclass.defaultLayout()
1750 || buffer.params().paragraph_separation ==
1751 BufferParams::PARSEP_INDENT))
1753 l_margin += theFontMetrics(buffer.params().getFont()).signedWidth(
1761 int TextMetrics::singleWidth(pit_type pit, pos_type pos) const
1763 ParagraphMetrics const & pm = par_metrics_[pit];
1765 return pm.singleWidth(pos, getDisplayFont(pit, pos));
1769 // only used for inset right now. should also be used for main text
1770 void TextMetrics::draw(PainterInfo & pi, int x, int y) const
1772 if (par_metrics_.empty())
1775 ParMetricsCache::const_iterator it = par_metrics_.begin();
1776 ParMetricsCache::const_iterator const end = par_metrics_.end();
1777 y -= it->second.ascent();
1778 for (; it != end; ++it) {
1779 ParagraphMetrics const & pmi = it->second;
1781 drawParagraph(pi, it->first, x, y);
1787 void TextMetrics::drawParagraph(PainterInfo & pi, pit_type pit, int x, int y) const
1789 // lyxerr << " paintPar: pit: " << pit << " at y: " << y << endl;
1790 int const ww = bv_->workHeight();
1792 bv_->coordCache().parPos()[text_][pit] = Point(x, y);
1794 ParagraphMetrics const & pm = par_metrics_[pit];
1795 if (pm.rows().empty())
1798 RowList::const_iterator const rb = pm.rows().begin();
1799 RowList::const_iterator const re = pm.rows().end();
1804 for (RowList::const_iterator rit = rb; rit != re; ++rit) {
1807 bool const inside = (y + rit->descent() >= 0
1808 && y - rit->ascent() < ww);
1809 // it is not needed to draw on screen if we are not inside.
1810 pi.pain.setDrawingEnabled(inside);
1811 RowPainter rp(pi, *text_, pit, *rit, bidi, x, y);
1813 // Row signature; has row changed since last paint?
1814 bool row_has_changed = rit->changed();
1816 if (!pi.full_repaint && !row_has_changed) {
1817 // Paint the only the insets if the text itself is
1819 rp.paintOnlyInsets();
1820 y += rit->descent();
1824 // Paint the row if a full repaint has been requested or it has
1826 // Clear background of this row
1827 // (if paragraph background was not cleared)
1828 if (!pi.full_repaint && row_has_changed) {
1829 pi.pain.fillRectangle(x, y - rit->ascent(),
1830 width(), rit->height(),
1831 Color_color(Color::color(pi.background_color)));
1834 // Instrumentation for testing row cache (see also
1836 if (lyxerr.debugging(Debug::PAINTING)) {
1837 if (text_->isMainText(bv_->buffer()))
1838 LYXERR(Debug::PAINTING) << "\n{" <<
1839 pi.full_repaint << row_has_changed << "}";
1841 LYXERR(Debug::PAINTING) << "[" <<
1842 pi.full_repaint << row_has_changed << "]";
1845 // Backup full_repaint status and force full repaint
1846 // for inner insets as the Row has been cleared out.
1847 bool tmp = pi.full_repaint;
1848 pi.full_repaint = true;
1851 rp.paintChangeBar();
1857 y += rit->descent();
1858 // Restore full_repaint status.
1859 pi.full_repaint = tmp;
1861 // Re-enable screen drawing for future use of the painter.
1862 pi.pain.setDrawingEnabled(true);
1864 //LYXERR(Debug::PAINTING) << "." << endl;
1868 // only used for inset right now. should also be used for main text
1869 void TextMetrics::drawSelection(PainterInfo & pi, int x, int) const
1871 Cursor & cur = bv_->cursor();
1872 if (!cur.selection())
1874 if (!ptr_cmp(cur.text(), text_))
1877 //if the anchor is outside, this is not our selection
1878 if (!ptr_cmp(cur.anchor().text(), text_))
1881 LYXERR(Debug::DEBUG)
1882 << BOOST_CURRENT_FUNCTION
1883 << "draw selection at " << x
1886 DocIterator beg = cur.selectionBegin();
1887 DocIterator end = cur.selectionEnd();
1889 // the selection doesn't touch the visible screen?
1890 if (bv_funcs::status(bv_, beg) == bv_funcs::CUR_BELOW
1891 || bv_funcs::status(bv_, end) == bv_funcs::CUR_ABOVE)
1894 if (beg.pit() < par_metrics_.begin()->first) {
1895 beg.pit() = par_metrics_.begin()->first;
1898 if (end.pit() > par_metrics_.rbegin()->first) {
1899 end.pit() = par_metrics_.rbegin()->first;
1900 end.pos() = end.lastpos();
1903 ParagraphMetrics const & pm1 = par_metrics_[beg.pit()];
1904 ParagraphMetrics const & pm2 = par_metrics_[end.pit()];
1905 Row const & row1 = pm1.getRow(beg.pos(), beg.boundary());
1906 Row const & row2 = pm2.getRow(end.pos(), end.boundary());
1910 bool const clipAbove =
1911 (bv_funcs::status(bv_, beg) == bv_funcs::CUR_ABOVE);
1915 middleTop = bv_funcs::getPos(*bv_, beg, beg.boundary()).y_ + row1.descent();
1919 bool const clipBelow =
1920 (bv_funcs::status(bv_, end) == bv_funcs::CUR_BELOW);
1922 middleBottom = bv_->workHeight();
1924 middleBottom = bv_funcs::getPos(*bv_, end, end.boundary()).y_ - row2.ascent();
1926 // start and end in the same line?
1927 if (!(clipAbove || clipBelow) && &row1 == &row2)
1928 // then only draw this row's selection
1929 drawRowSelection(pi, x, row1, beg, end, false, false);
1933 DocIterator begRowEnd = beg;
1934 begRowEnd.pos() = row1.endpos();
1935 begRowEnd.boundary(true);
1937 // draw upper rectangle
1938 drawRowSelection(pi, x, row1, beg, begRowEnd, false, true);
1941 if (middleTop < middleBottom) {
1942 // draw middle rectangle
1943 pi.pain.fillRectangle(x, middleTop, width(), middleBottom - middleTop,
1949 DocIterator endRowBeg = end;
1950 endRowBeg.pos() = row2.pos();
1951 endRowBeg.boundary(false);
1953 // draw low rectangle
1954 drawRowSelection(pi, x, row2, endRowBeg, end, true, false);
1960 void TextMetrics::drawRowSelection(PainterInfo & pi, int x, Row const & row,
1961 DocIterator const & beg, DocIterator const & end,
1962 bool drawOnBegMargin, bool drawOnEndMargin) const
1964 Buffer & buffer = bv_->buffer();
1965 DocIterator cur = beg;
1966 int x1 = cursorX(beg.top(), beg.boundary());
1967 int x2 = cursorX(end.top(), end.boundary());
1968 int y1 = bv_funcs::getPos(*bv_, cur, cur.boundary()).y_ - row.ascent();
1969 int y2 = y1 + row.height();
1972 if (drawOnBegMargin) {
1973 if (text_->isRTL(buffer, beg.paragraph()))
1974 pi.pain.fillRectangle(x + x1, y1, width() - x1, y2 - y1, Color::selection);
1976 pi.pain.fillRectangle(x, y1, x1, y2 - y1, Color::selection);
1979 if (drawOnEndMargin) {
1980 if (text_->isRTL(buffer, beg.paragraph()))
1981 pi.pain.fillRectangle(x, y1, x2, y2 - y1, Color::selection);
1983 pi.pain.fillRectangle(x + x2, y1, width() - x2, y2 - y1, Color::selection);
1986 // if we are on a boundary from the beginning, it's probably
1987 // a RTL boundary and we jump to the other side directly as this
1988 // segement is 0-size and confuses the logic below
1990 cur.boundary(false);
1992 // go through row and draw from RTL boundary to RTL boundary
1994 bool drawNow = false;
1996 // simplified cursorRight code below which does not
1997 // descend into insets and which does not go into the
1998 // next line. Compare the logic with the original cursorRight
2000 // if left of boundary -> just jump to right side
2001 // but for RTL boundaries don't, because: abc|DDEEFFghi -> abcDDEEF|Fghi
2002 if (cur.boundary()) {
2003 cur.boundary(false);
2004 } else if (isRTLBoundary(cur.pit(), cur.pos() + 1)) {
2005 // in front of RTL boundary -> Stay on this side of the boundary because:
2006 // ab|cDDEEFFghi -> abc|DDEEFFghi
2015 if (cur.pos() == row.endpos())
2020 // the previous segment was just drawn, now the next starts
2021 x1 = cursorX(cur.top(), cur.boundary());
2024 if (!(cur < end) || drawNow) {
2025 x2 = cursorX(cur.top(), cur.boundary());
2026 pi.pain.fillRectangle(x + min(x1,x2), y1, abs(x2 - x1), y2 - y1,
2029 // reset x1, so it is set again next round (which will be on the
2030 // right side of a boundary or at the selection end)
2036 //int TextMetrics::pos2x(pit_type pit, pos_type pos) const
2038 // ParagraphMetrics const & pm = par_metrics_[pit];
2039 // Row const & r = pm.rows()[row];
2045 int defaultRowHeight()
2047 return int(theFontMetrics(Font(Font::ALL_SANE)).maxHeight() * 1.2);