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(Paragraph const & par,
212 pos_type const pos) const
214 BOOST_ASSERT(pos >= 0);
216 LayoutPtr const & layout = par.layout();
217 Buffer const & buffer = bv_->buffer();
219 BufferParams const & params = buffer.params();
220 pos_type const body_pos = par.beginOfBody();
222 // We specialize the 95% common case:
223 if (!par.getDepth()) {
224 Font f = par.getFontSettings(params, pos);
225 if (!text_->isMainText(buffer))
229 if (layout->labeltype == LABEL_MANUAL && pos < body_pos) {
230 lf = layout->labelfont;
231 rlf = layout->reslabelfont;
234 rlf = layout->resfont;
236 // In case the default family has been customized
237 if (lf.family() == Font::INHERIT_FAMILY)
238 rlf.setFamily(params.getFont().family());
239 return f.realize(rlf);
242 // The uncommon case need not be optimized as much
245 layoutfont = layout->labelfont;
247 layoutfont = layout->font;
249 Font font = par.getFontSettings(params, pos);
250 font.realize(layoutfont);
252 if (!text_->isMainText(buffer))
253 applyOuterFont(font);
255 // Find the pit value belonging to paragraph. This will not break
256 // even if pars_ would not be a vector anymore.
257 // Performance appears acceptable.
259 ParagraphList const & pars = text_->paragraphs();
261 pit_type pit = pars.size();
262 for (pit_type it = 0; it < pit; ++it)
263 if (&pars[it] == &par) {
267 // Realize against environment font information
268 // NOTE: the cast to pit_type should be removed when pit_type
269 // changes to a unsigned integer.
270 if (pit < pit_type(pars.size()))
271 font.realize(outerFont(pit, pars));
273 // Realize with the fonts of lesser depth.
274 font.realize(params.getFont());
280 bool TextMetrics::isRTL(CursorSlice const & sl, bool boundary) const
282 if (!lyxrc.rtl_support && !sl.text())
286 if (boundary && sl.pos() > 0)
289 Paragraph const & par = text_->getPar(sl.pit());
290 return getDisplayFont(par, sl.pos() + correction).isVisibleRightToLeft();
294 bool TextMetrics::isRTLBoundary(Paragraph const & par,
297 if (!lyxrc.rtl_support)
300 // no RTL boundary at line start
304 bool left = getDisplayFont(par, pos - 1).isVisibleRightToLeft();
306 if (pos == par.size())
307 right = par.isRightToLeftPar(bv_->buffer().params());
309 right = getDisplayFont(par, pos).isVisibleRightToLeft();
310 return left != right;
314 bool TextMetrics::isRTLBoundary(Paragraph const & par,
315 pos_type pos, Font const & font) const
317 if (!lyxrc.rtl_support)
320 bool left = font.isVisibleRightToLeft();
322 if (pos == par.size())
323 right = par.isRightToLeftPar(bv_->buffer().params());
325 right = getDisplayFont(par, pos).isVisibleRightToLeft();
326 return left != right;
330 bool TextMetrics::redoParagraph(pit_type const pit)
332 Paragraph & par = text_->getPar(pit);
333 // IMPORTANT NOTE: We pass 'false' explicitely in order to not call
334 // redoParagraph() recursively inside parMetrics.
335 Dimension old_dim = parMetrics(pit, false).dim();
336 ParagraphMetrics & pm = par_metrics_[pit];
339 Buffer & buffer = bv_->buffer();
340 BufferParams const & bparams = buffer.params();
341 main_text_ = (text_ == &buffer.text());
342 bool changed = false;
344 // FIXME This check ought to be done somewhere else. It is the reason
345 // why text_ is not const. But then, where else to do it?
346 // Well, how can you end up with either (a) a biblio environment that
347 // has no InsetBibitem or (b) a biblio environment with more than one
348 // InsetBibitem? I think the answer is: when paragraphs are merged;
349 // when layout is set; when material is pasted.
350 int const moveCursor = par.checkBiblio(buffer.params().trackChanges);
352 const_cast<Cursor &>(bv_->cursor()).posRight();
353 else if (moveCursor < 0) {
354 Cursor & cursor = const_cast<Cursor &>(bv_->cursor());
355 if (cursor.pos() >= -moveCursor)
359 // Optimisation: this is used in the next two loops
360 // so better to calculate that once here.
361 int const right_margin = rightMargin(pm);
364 // FIXME: We should always use getFont(), see documentation of
365 // noFontChange() in Inset.h.
366 Font const bufferfont = buffer.params().getFont();
367 InsetList::const_iterator ii = par.insetlist.begin();
368 InsetList::const_iterator iend = par.insetlist.end();
369 for (; ii != iend; ++ii) {
370 Dimension old_dim = ii->inset->dimension();
372 int const w = max_width_ - leftMargin(max_width_, pit, ii->pos)
374 Font const & font = ii->inset->noFontChange() ?
375 bufferfont : getDisplayFont(par, ii->pos);
376 MetricsInfo mi(bv_, font, w);
377 changed |= ii->inset->metrics(mi, dim);
378 changed |= (old_dim != dim);
381 par.setBeginOfBody();
383 size_t row_index = 0;
384 // maximum pixel width of a row
385 int width = max_width_ - right_margin; // - leftMargin(max_width_, pit, row);
388 pos_type end = rowBreakPoint(width, pit, first);
389 if (row_index || end < par.size())
390 // If there is more than one row, expand the text to
391 // the full allowable width. This setting here is needed
392 // for the computeRowMetrics below().
393 dim_.wid = max_width_;
395 dim.wid = rowWidth(right_margin, pit, first, end);
396 boost::tie(dim.asc, dim.des) = rowHeight(pit, first, end);
397 if (row_index == pm.rows().size())
398 pm.rows().push_back(Row());
399 Row & row = pm.rows()[row_index];
400 row.setChanged(false);
403 row.setDimension(dim);
404 computeRowMetrics(pit, row);
405 pm.computeRowSignature(row, bparams);
409 pm.dim().wid = std::max(pm.dim().wid, dim.wid);
410 pm.dim().des += dim.height();
411 } while (first < par.size());
413 if (row_index < pm.rows().size())
414 pm.rows().resize(row_index);
416 // Make sure that if a par ends in newline, there is one more row
418 if (first > 0 && par.isNewline(first - 1)) {
420 dim.wid = rowWidth(right_margin, pit, first, first);
421 boost::tie(dim.asc, dim.des) = rowHeight(pit, first, first);
422 if (row_index == pm.rows().size())
423 pm.rows().push_back(Row());
424 Row & row = pm.rows()[row_index];
425 row.setChanged(false);
428 row.setDimension(dim);
429 computeRowMetrics(pit, row);
430 pm.computeRowSignature(row, bparams);
431 pm.dim().des += dim.height();
434 pm.dim().asc += pm.rows()[0].ascent();
435 pm.dim().des -= pm.rows()[0].ascent();
437 changed |= old_dim.height() != pm.dim().height();
443 void TextMetrics::computeRowMetrics(pit_type const pit,
451 Buffer & buffer = bv_->buffer();
452 Paragraph const & par = text_->getPar(pit);
454 double w = dim_.wid - row.width();
455 // FIXME: put back this assertion when the crash on new doc is solved.
456 //BOOST_ASSERT(w >= 0);
458 //lyxerr << "\ndim_.wid " << dim_.wid << endl;
459 //lyxerr << "row.width() " << row.width() << endl;
460 //lyxerr << "w " << w << endl;
462 bool const is_rtl = text_->isRTL(buffer, par);
464 row.x = rightMargin(pit);
466 row.x = leftMargin(max_width_, pit, row.pos());
468 // is there a manual margin with a manual label
469 LayoutPtr const & layout = par.layout();
471 if (layout->margintype == MARGIN_MANUAL
472 && layout->labeltype == LABEL_MANUAL) {
473 /// We might have real hfills in the label part
474 int nlh = numberOfLabelHfills(par, row);
476 // A manual label par (e.g. List) has an auto-hfill
477 // between the label text and the body of the
479 // But we don't want to do this auto hfill if the par
484 if (nlh && !par.getLabelWidthString().empty())
485 row.label_hfill = labelFill(pit, row) / double(nlh);
488 // are there any hfills in the row?
489 int const nh = numberOfHfills(par, row);
494 // we don't have to look at the alignment if it is ALIGN_LEFT and
495 // if the row is already larger then the permitted width as then
496 // we force the LEFT_ALIGN'edness!
497 } else if (int(row.width()) < max_width_) {
498 // is it block, flushleft or flushright?
499 // set x how you need it
501 if (par.params().align() == LYX_ALIGN_LAYOUT)
502 align = layout->align;
504 align = par.params().align();
506 // Display-style insets should always be on a centred row
507 // The test on par.size() is to catch zero-size pars, which
508 // would trigger the assert in Paragraph::getInset().
509 //inset = par.size() ? par.getInset(row.pos()) : 0;
510 if (row.pos() < par.size()
511 && par.isInset(row.pos()))
513 switch(par.getInset(row.pos())->display()) {
514 case Inset::AlignLeft:
515 align = LYX_ALIGN_BLOCK;
517 case Inset::AlignCenter:
518 align = LYX_ALIGN_CENTER;
521 case Inset::AlignRight:
522 // unchanged (use align)
528 case LYX_ALIGN_BLOCK: {
529 int const ns = numberOfSeparators(par, row);
530 bool disp_inset = false;
531 if (row.endpos() < par.size()) {
532 Inset const * in = par.getInset(row.endpos());
534 disp_inset = in->display();
536 // If we have separators, this is not the last row of a
537 // par, does not end in newline, and is not row above a
538 // display inset... then stretch it
540 && row.endpos() < par.size()
541 && !par.isNewline(row.endpos() - 1)
544 row.separator = w / ns;
545 //lyxerr << "row.separator " << row.separator << endl;
546 //lyxerr << "ns " << ns << endl;
552 case LYX_ALIGN_RIGHT:
555 case LYX_ALIGN_CENTER:
562 pos_type body_pos = par.beginOfBody();
563 pos_type end = row.endpos();
566 && (body_pos > end || !par.isLineSeparator(body_pos - 1)))
568 row.x += theFontMetrics(text_->getLabelFont(buffer, par)).
569 width(layout->labelsep);
571 row.x += row.label_hfill;
577 int TextMetrics::labelFill(pit_type const pit, Row const & row) const
579 Buffer & buffer = bv_->buffer();
580 Paragraph const & par = text_->getPar(pit);
582 pos_type last = par.beginOfBody();
583 BOOST_ASSERT(last > 0);
585 // -1 because a label ends with a space that is in the label
588 // a separator at this end does not count
589 if (par.isLineSeparator(last))
593 for (pos_type i = row.pos(); i <= last; ++i)
594 w += singleWidth(pit, i);
596 docstring const & label = par.params().labelWidthString();
600 FontMetrics const & fm
601 = theFontMetrics(text_->getLabelFont(buffer, par));
603 return max(0, fm.width(label) - w);
609 // this needs special handling - only newlines count as a break point
610 pos_type addressBreakPoint(pos_type i, Paragraph const & par)
612 pos_type const end = par.size();
615 if (par.isNewline(i))
624 int TextMetrics::labelEnd(pit_type const pit) const
626 // labelEnd is only needed if the layout fills a flushleft label.
627 if (text_->getPar(pit).layout()->margintype != MARGIN_MANUAL)
629 // return the beginning of the body
630 return leftMargin(max_width_, pit);
634 pit_type TextMetrics::rowBreakPoint(int width, pit_type const pit,
637 Buffer & buffer = bv_->buffer();
638 ParagraphMetrics const & pm = par_metrics_[pit];
639 Paragraph const & par = text_->getPar(pit);
640 pos_type const end = par.size();
641 if (pos == end || width < 0)
644 LayoutPtr const & layout = par.layout();
646 if (layout->margintype == MARGIN_RIGHT_ADDRESS_BOX)
647 return addressBreakPoint(pos, par);
649 pos_type const body_pos = par.beginOfBody();
652 // Now we iterate through until we reach the right margin
653 // or the end of the par, then choose the possible break
656 int label_end = labelEnd(pit);
657 int const left = leftMargin(max_width_, pit, pos);
660 // pixel width since last breakpoint
663 FontIterator fi = FontIterator(*this, par, pos);
664 pos_type point = end;
666 for ( ; i < end; ++i, ++fi) {
667 int thiswidth = pm.singleWidth(i, *fi);
669 // add the auto-hfill from label end to the body
670 if (body_pos && i == body_pos) {
671 FontMetrics const & fm = theFontMetrics(
672 text_->getLabelFont(buffer, par));
673 int add = fm.width(layout->labelsep);
674 if (par.isLineSeparator(i - 1))
675 add -= singleWidth(pit, i - 1);
677 add = std::max(add, label_end - x);
682 chunkwidth += thiswidth;
684 // break before a character that will fall off
685 // the right of the row
687 // if no break before, break here
688 if (point == end || chunkwidth >= width - left) {
695 // exit on last registered breakpoint:
699 if (par.isNewline(i)) {
705 if (par.isInset(i + 1) && par.getInset(i + 1)->display()) {
710 if (par.isInset(i) && par.getInset(i)->display()) {
716 if (!par.isInset(i) || par.getInset(i)->isChar()) {
717 // some insets are line separators too
718 if (par.isLineSeparator(i)) {
719 // register breakpoint:
726 // maybe found one, but the par is short enough.
727 if (i == end && x < width)
730 // manual labels cannot be broken in LaTeX. But we
731 // want to make our on-screen rendering of footnotes
733 if (body_pos && point < body_pos)
740 int TextMetrics::rowWidth(int right_margin, pit_type const pit,
741 pos_type const first, pos_type const end) const
743 Buffer & buffer = bv_->buffer();
744 // get the pure distance
745 ParagraphMetrics const & pm = par_metrics_[pit];
746 Paragraph const & par = text_->getPar(pit);
747 int w = leftMargin(max_width_, pit, first);
748 int label_end = labelEnd(pit);
750 pos_type const body_pos = par.beginOfBody();
754 FontIterator fi = FontIterator(*this, par, i);
755 for ( ; i < end; ++i, ++fi) {
756 if (body_pos > 0 && i == body_pos) {
757 FontMetrics const & fm = theFontMetrics(
758 text_->getLabelFont(buffer, par));
759 w += fm.width(par.layout()->labelsep);
760 if (par.isLineSeparator(i - 1))
761 w -= singleWidth(pit, i - 1);
762 w = max(w, label_end);
764 w += pm.singleWidth(i, *fi);
768 if (body_pos > 0 && body_pos >= end) {
769 FontMetrics const & fm = theFontMetrics(
770 text_->getLabelFont(buffer, par));
771 w += fm.width(par.layout()->labelsep);
772 if (end > 0 && par.isLineSeparator(end - 1))
773 w -= singleWidth(pit, end - 1);
774 w = max(w, label_end);
777 return w + right_margin;
781 boost::tuple<int, int> TextMetrics::rowHeight(pit_type const pit, pos_type const first,
782 pos_type const end) const
784 Paragraph const & par = text_->getPar(pit);
785 // get the maximum ascent and the maximum descent
786 double layoutasc = 0;
787 double layoutdesc = 0;
788 double const dh = defaultRowHeight();
790 // ok, let us initialize the maxasc and maxdesc value.
791 // Only the fontsize count. The other properties
792 // are taken from the layoutfont. Nicer on the screen :)
793 LayoutPtr const & layout = par.layout();
795 // as max get the first character of this row then it can
796 // increase but not decrease the height. Just some point to
797 // start with so we don't have to do the assignment below too
799 Buffer const & buffer = bv_->buffer();
800 Font font = getDisplayFont(par, first);
801 Font::FONT_SIZE const tmpsize = font.size();
802 font = text_->getLayoutFont(buffer, pit);
803 Font::FONT_SIZE const size = font.size();
804 font.setSize(tmpsize);
806 Font labelfont = text_->getLabelFont(buffer, par);
808 FontMetrics const & labelfont_metrics = theFontMetrics(labelfont);
809 FontMetrics const & fontmetrics = theFontMetrics(font);
811 // these are minimum values
812 double const spacing_val = layout->spacing.getValue()
813 * text_->spacing(buffer, par);
814 //lyxerr << "spacing_val = " << spacing_val << endl;
815 int maxasc = int(fontmetrics.maxAscent() * spacing_val);
816 int maxdesc = int(fontmetrics.maxDescent() * spacing_val);
818 // insets may be taller
819 InsetList::const_iterator ii = par.insetlist.begin();
820 InsetList::const_iterator iend = par.insetlist.end();
821 for ( ; ii != iend; ++ii) {
822 if (ii->pos >= first && ii->pos < end) {
823 maxasc = max(maxasc, ii->inset->ascent());
824 maxdesc = max(maxdesc, ii->inset->descent());
828 // Check if any custom fonts are larger (Asger)
829 // This is not completely correct, but we can live with the small,
830 // cosmetic error for now.
833 Font::FONT_SIZE maxsize =
834 par.highestFontInRange(first, end, size);
835 if (maxsize > font.size()) {
836 // use standard paragraph font with the maximal size
838 maxfont.setSize(maxsize);
839 FontMetrics const & maxfontmetrics = theFontMetrics(maxfont);
840 maxasc = max(maxasc, maxfontmetrics.maxAscent());
841 maxdesc = max(maxdesc, maxfontmetrics.maxDescent());
844 // This is nicer with box insets:
848 ParagraphList const & pars = text_->paragraphs();
852 BufferParams const & bufparams = buffer.params();
853 // some parskips VERY EASY IMPLEMENTATION
854 if (bufparams.paragraph_separation
855 == BufferParams::PARSEP_SKIP
856 && par.ownerCode() != Inset::ERT_CODE
857 && par.ownerCode() != Inset::LISTINGS_CODE
859 && ((layout->isParagraph() && par.getDepth() == 0)
860 || (pars[pit - 1].layout()->isParagraph()
861 && pars[pit - 1].getDepth() == 0)))
863 maxasc += bufparams.getDefSkip().inPixels(*bv_);
866 if (par.params().startOfAppendix())
867 maxasc += int(3 * dh);
869 // This is special code for the chapter, since the label of this
870 // layout is printed in an extra row
871 if (layout->counter == "chapter"
872 && !par.params().labelString().empty()) {
873 labeladdon = int(labelfont_metrics.maxHeight()
874 * layout->spacing.getValue()
875 * text_->spacing(buffer, par));
878 // special code for the top label
879 if ((layout->labeltype == LABEL_TOP_ENVIRONMENT
880 || layout->labeltype == LABEL_BIBLIO
881 || layout->labeltype == LABEL_CENTERED_TOP_ENVIRONMENT)
882 && isFirstInSequence(pit, pars)
883 && !par.getLabelstring().empty())
886 labelfont_metrics.maxHeight()
887 * layout->spacing.getValue()
888 * text_->spacing(buffer, par)
889 + (layout->topsep + layout->labelbottomsep) * dh);
892 // Add the layout spaces, for example before and after
893 // a section, or between the items of a itemize or enumerate
896 pit_type prev = depthHook(pit, pars, par.getDepth());
897 Paragraph const & prevpar = pars[prev];
899 && prevpar.layout() == layout
900 && prevpar.getDepth() == par.getDepth()
901 && prevpar.getLabelWidthString()
902 == par.getLabelWidthString()) {
903 layoutasc = layout->itemsep * dh;
904 } else if (pit != 0 || first != 0) {
905 if (layout->topsep > 0)
906 layoutasc = layout->topsep * dh;
909 prev = outerHook(pit, pars);
910 if (prev != pit_type(pars.size())) {
911 maxasc += int(pars[prev].layout()->parsep * dh);
912 } else if (pit != 0) {
913 Paragraph const & prevpar = pars[pit - 1];
914 if (prevpar.getDepth() != 0 ||
915 prevpar.layout() == layout) {
916 maxasc += int(layout->parsep * dh);
921 // is it a bottom line?
922 if (end >= par.size()) {
923 // add the layout spaces, for example before and after
924 // a section, or between the items of a itemize or enumerate
926 pit_type nextpit = pit + 1;
927 if (nextpit != pit_type(pars.size())) {
932 if (pars[cpit].getDepth() > pars[nextpit].getDepth()) {
933 usual = pars[cpit].layout()->bottomsep * dh;
934 cpit = depthHook(cpit, pars, pars[nextpit].getDepth());
935 if (pars[cpit].layout() != pars[nextpit].layout()
936 || pars[nextpit].getLabelWidthString() != pars[cpit].getLabelWidthString())
938 unusual = pars[cpit].layout()->bottomsep * dh;
940 layoutdesc = max(unusual, usual);
941 } else if (pars[cpit].getDepth() == pars[nextpit].getDepth()) {
942 if (pars[cpit].layout() != pars[nextpit].layout()
943 || pars[nextpit].getLabelWidthString() != pars[cpit].getLabelWidthString())
944 layoutdesc = int(pars[cpit].layout()->bottomsep * dh);
949 // incalculate the layout spaces
950 maxasc += int(layoutasc * 2 / (2 + pars[pit].getDepth()));
951 maxdesc += int(layoutdesc * 2 / (2 + pars[pit].getDepth()));
953 // FIXME: the correct way is to do the following is to move the
954 // following code in another method specially tailored for the
955 // main Text. The following test is thus bogus.
956 // Top and bottom margin of the document (only at top-level)
958 if (pit == 0 && first == 0)
960 if (pit + 1 == pit_type(pars.size()) &&
962 !(end > 0 && par.isNewline(end - 1)))
966 return boost::make_tuple(maxasc + labeladdon, maxdesc);
970 // x is an absolute screen coord
971 // returns the column near the specified x-coordinate of the row
972 // x is set to the real beginning of this column
973 pos_type TextMetrics::getColumnNearX(pit_type const pit,
974 Row const & row, int & x, bool & boundary) const
976 Buffer const & buffer = bv_->buffer();
978 /// For the main Text, it is possible that this pit is not
979 /// yet in the CoordCache when moving cursor up.
980 /// x Paragraph coordinate is always 0 for main text anyway.
981 int const xo = main_text_? 0 : bv_->coordCache().get(text_, pit).x_;
983 Paragraph const & par = text_->getPar(pit);
984 ParagraphMetrics const & pm = par_metrics_[pit];
986 bidi.computeTables(par, buffer, row);
988 pos_type vc = row.pos();
989 pos_type end = row.endpos();
991 LayoutPtr const & layout = par.layout();
993 bool left_side = false;
995 pos_type body_pos = par.beginOfBody();
998 double last_tmpx = tmpx;
1001 (body_pos > end || !par.isLineSeparator(body_pos - 1)))
1004 // check for empty row
1010 while (vc < end && tmpx <= x) {
1011 c = bidi.vis2log(vc);
1013 if (body_pos > 0 && c == body_pos - 1) {
1014 FontMetrics const & fm = theFontMetrics(
1015 text_->getLabelFont(buffer, par));
1016 tmpx += row.label_hfill + fm.width(layout->labelsep);
1017 if (par.isLineSeparator(body_pos - 1))
1018 tmpx -= singleWidth(pit, body_pos - 1);
1021 if (pm.hfillExpansion(row, c)) {
1022 tmpx += singleWidth(pit, c);
1026 tmpx += row.label_hfill;
1027 } else if (par.isSeparator(c)) {
1028 tmpx += singleWidth(pit, c);
1030 tmpx += row.separator;
1032 tmpx += singleWidth(pit, c);
1037 if ((tmpx + last_tmpx) / 2 > x) {
1042 BOOST_ASSERT(vc <= end); // This shouldn't happen.
1045 // This (rtl_support test) is not needed, but gives
1046 // some speedup if rtl_support == false
1047 bool const lastrow = lyxrc.rtl_support && row.endpos() == par.size();
1049 // If lastrow is false, we don't need to compute
1050 // the value of rtl.
1051 bool const rtl = lastrow ? text_->isRTL(buffer, par) : false;
1053 ((rtl && left_side && vc == row.pos() && x < tmpx - 5) ||
1054 (!rtl && !left_side && vc == end && x > tmpx + 5)))
1056 else if (vc == row.pos()) {
1057 c = bidi.vis2log(vc);
1058 if (bidi.level(c) % 2 == 1)
1061 c = bidi.vis2log(vc - 1);
1062 bool const rtl = (bidi.level(c) % 2 == 1);
1063 if (left_side == rtl) {
1065 boundary = isRTLBoundary(par, c);
1069 // I believe this code is not needed anymore (Jug 20050717)
1071 // The following code is necessary because the cursor position past
1072 // the last char in a row is logically equivalent to that before
1073 // the first char in the next row. That's why insets causing row
1074 // divisions -- Newline and display-style insets -- must be treated
1075 // specially, so cursor up/down doesn't get stuck in an air gap -- MV
1076 // Newline inset, air gap below:
1077 if (row.pos() < end && c >= end && par.isNewline(end - 1)) {
1078 if (bidi.level(end -1) % 2 == 0)
1079 tmpx -= singleWidth(pit, end - 1);
1081 tmpx += singleWidth(pit, end - 1);
1085 // Air gap above display inset:
1086 if (row.pos() < end && c >= end && end < par.size()
1087 && par.isInset(end) && par.getInset(end)->display()) {
1090 // Air gap below display inset:
1091 if (row.pos() < end && c >= end && par.isInset(end - 1)
1092 && par.getInset(end - 1)->display()) {
1098 pos_type const col = c - row.pos();
1100 if (!c || end == par.size())
1103 if (c==end && !par.isLineSeparator(c-1) && !par.isNewline(c-1)) {
1108 return min(col, end - 1 - row.pos());
1112 pos_type TextMetrics::x2pos(pit_type pit, int row, int x) const
1114 ParagraphMetrics const & pm = par_metrics_[pit];
1115 BOOST_ASSERT(!pm.rows().empty());
1116 BOOST_ASSERT(row < int(pm.rows().size()));
1118 Row const & r = pm.rows()[row];
1119 return r.pos() + getColumnNearX(pit, r, x, bound);
1123 // y is screen coordinate
1124 pit_type TextMetrics::getPitNearY(int y)
1126 BOOST_ASSERT(!text_->paragraphs().empty());
1127 BOOST_ASSERT(bv_->coordCache().getParPos().find(text_) != bv_->coordCache().getParPos().end());
1128 CoordCache::InnerParPosCache const & cc = bv_->coordCache().getParPos().find(text_)->second;
1129 LYXERR(Debug::DEBUG)
1130 << BOOST_CURRENT_FUNCTION
1131 << ": y: " << y << " cache size: " << cc.size()
1134 // look for highest numbered paragraph with y coordinate less than given y
1137 CoordCache::InnerParPosCache::const_iterator it = cc.begin();
1138 CoordCache::InnerParPosCache::const_iterator et = cc.end();
1139 CoordCache::InnerParPosCache::const_iterator last = et; last--;
1141 ParagraphMetrics const & pm = par_metrics_[it->first];
1143 // If we are off-screen (before the visible part)
1145 // and even before the first paragraph in the cache.
1146 && y < it->second.y_ - int(pm.ascent())) {
1147 // and we are not at the first paragraph in the inset.
1150 // then this is the paragraph we are looking for.
1151 pit = it->first - 1;
1152 // rebreak it and update the CoordCache.
1154 bv_->coordCache().parPos()[text_][pit] =
1155 Point(0, it->second.y_ - pm.descent());
1159 ParagraphMetrics const & pm_last = par_metrics_[last->first];
1161 // If we are off-screen (after the visible part)
1162 if (y > bv_->workHeight()
1163 // and even after the first paragraph in the cache.
1164 && y >= last->second.y_ + int(pm_last.descent())) {
1165 pit = last->first + 1;
1166 // and we are not at the last paragraph in the inset.
1167 if (pit == int(text_->paragraphs().size()))
1169 // then this is the paragraph we are looking for.
1170 // rebreak it and update the CoordCache.
1172 bv_->coordCache().parPos()[text_][pit] =
1173 Point(0, last->second.y_ + pm_last.ascent());
1177 for (; it != et; ++it) {
1178 LYXERR(Debug::DEBUG)
1179 << BOOST_CURRENT_FUNCTION
1180 << " examining: pit: " << it->first
1181 << " y: " << it->second.y_
1184 ParagraphMetrics const & pm = par_metrics_[it->first];
1186 if (it->first >= pit && int(it->second.y_) - int(pm.ascent()) <= y) {
1192 LYXERR(Debug::DEBUG)
1193 << BOOST_CURRENT_FUNCTION
1194 << ": found best y: " << yy << " for pit: " << pit
1201 Row const & TextMetrics::getRowNearY(int y, pit_type pit) const
1203 ParagraphMetrics const & pm = par_metrics_[pit];
1205 int yy = bv_->coordCache().get(text_, pit).y_ - pm.ascent();
1206 BOOST_ASSERT(!pm.rows().empty());
1207 RowList::const_iterator rit = pm.rows().begin();
1208 RowList::const_iterator const rlast = boost::prior(pm.rows().end());
1209 for (; rit != rlast; yy += rit->height(), ++rit)
1210 if (yy + rit->height() > y)
1216 // x,y are absolute screen coordinates
1217 // sets cursor recursively descending into nested editable insets
1218 Inset * TextMetrics::editXY(Cursor & cur, int x, int y)
1220 if (lyxerr.debugging(Debug::WORKAREA)) {
1221 lyxerr << "TextMetrics::editXY(cur, " << x << ", " << y << ")" << std::endl;
1222 cur.bv().coordCache().dump();
1224 pit_type pit = getPitNearY(y);
1225 BOOST_ASSERT(pit != -1);
1227 Row const & row = getRowNearY(y, pit);
1230 int xx = x; // is modified by getColumnNearX
1231 pos_type const pos = row.pos()
1232 + getColumnNearX(pit, row, xx, bound);
1235 cur.boundary(bound);
1238 // try to descend into nested insets
1239 Inset * inset = checkInsetHit(x, y);
1240 //lyxerr << "inset " << inset << " hit at x: " << x << " y: " << y << endl;
1242 // Either we deconst editXY or better we move current_font
1243 // and real_current_font to Cursor
1244 // FIXME: what is needed now that current_font and real_current_font
1246 cur.setCurrentFont();
1250 ParagraphList const & pars = text_->paragraphs();
1251 Inset const * insetBefore = pos? pars[pit].getInset(pos - 1): 0;
1252 //Inset * insetBehind = pars[pit].getInset(pos);
1254 // This should be just before or just behind the
1255 // cursor position set above.
1256 BOOST_ASSERT((pos != 0 && inset == insetBefore)
1257 || inset == pars[pit].getInset(pos));
1259 // Make sure the cursor points to the position before
1261 if (inset == insetBefore) {
1263 cur.boundary(false);
1266 // Try to descend recursively inside the inset.
1267 inset = inset->editXY(cur, x, y);
1269 if (cur.top().text() == text_)
1270 cur.setCurrentFont();
1275 void TextMetrics::setCursorFromCoordinates(Cursor & cur, int const x, int const y)
1277 BOOST_ASSERT(text_ == cur.text());
1278 pit_type pit = getPitNearY(y);
1280 ParagraphMetrics const & pm = par_metrics_[pit];
1282 int yy = bv_->coordCache().get(text_, pit).y_ - pm.ascent();
1283 LYXERR(Debug::DEBUG)
1284 << BOOST_CURRENT_FUNCTION
1288 << " yy: " << yy << endl;
1291 BOOST_ASSERT(pm.rows().size());
1292 for (; r < int(pm.rows().size()) - 1; ++r) {
1293 Row const & row = pm.rows()[r];
1294 if (int(yy + row.height()) > y)
1299 Row const & row = pm.rows()[r];
1301 LYXERR(Debug::DEBUG)
1302 << BOOST_CURRENT_FUNCTION
1304 << " from pos: " << row.pos()
1309 pos_type const pos = row.pos() + getColumnNearX(pit, row, xx, bound);
1311 LYXERR(Debug::DEBUG)
1312 << BOOST_CURRENT_FUNCTION
1313 << ": setting cursor pit: " << pit
1317 text_->setCursor(cur, pit, pos, true, bound);
1318 // remember new position.
1323 //takes screen x,y coordinates
1324 Inset * TextMetrics::checkInsetHit(int x, int y)
1326 pit_type pit = getPitNearY(y);
1327 BOOST_ASSERT(pit != -1);
1329 Paragraph const & par = text_->paragraphs()[pit];
1331 LYXERR(Debug::DEBUG)
1332 << BOOST_CURRENT_FUNCTION
1337 InsetList::const_iterator iit = par.insetlist.begin();
1338 InsetList::const_iterator iend = par.insetlist.end();
1339 for (; iit != iend; ++iit) {
1340 Inset * inset = iit->inset;
1342 LYXERR(Debug::DEBUG)
1343 << BOOST_CURRENT_FUNCTION
1344 << ": examining inset " << inset << endl;
1346 if (bv_->coordCache().getInsets().has(inset))
1347 LYXERR(Debug::DEBUG)
1348 << BOOST_CURRENT_FUNCTION
1349 << ": xo: " << inset->xo(*bv_) << "..."
1350 << inset->xo(*bv_) + inset->width()
1351 << " yo: " << inset->yo(*bv_) - inset->ascent()
1353 << inset->yo(*bv_) + inset->descent()
1356 LYXERR(Debug::DEBUG)
1357 << BOOST_CURRENT_FUNCTION
1358 << ": inset has no cached position" << endl;
1360 if (inset->covers(*bv_, x, y)) {
1361 LYXERR(Debug::DEBUG)
1362 << BOOST_CURRENT_FUNCTION
1363 << ": Hit inset: " << inset << endl;
1367 LYXERR(Debug::DEBUG)
1368 << BOOST_CURRENT_FUNCTION
1369 << ": No inset hit. " << endl;
1374 int TextMetrics::cursorX(CursorSlice const & sl,
1375 bool boundary) const
1377 BOOST_ASSERT(sl.text() == text_);
1378 pit_type const pit = sl.pit();
1379 Paragraph const & par = text_->paragraphs()[pit];
1380 ParagraphMetrics const & pm = par_metrics_[pit];
1381 if (pm.rows().empty())
1384 pos_type ppos = sl.pos();
1385 // Correct position in front of big insets
1386 bool const boundary_correction = ppos != 0 && boundary;
1387 if (boundary_correction)
1390 Row const & row = pm.getRow(sl.pos(), boundary);
1392 pos_type cursor_vpos = 0;
1394 Buffer const & buffer = bv_->buffer();
1397 bidi.computeTables(par, buffer, row);
1399 pos_type const row_pos = row.pos();
1400 pos_type const end = row.endpos();
1401 // Spaces at logical line breaks in bidi text must be skipped during
1402 // cursor positioning. However, they may appear visually in the middle
1403 // of a row; they must be skipped, wherever they are...
1404 // * logically "abc_[HEBREW_\nHEBREW]"
1405 // * visually "abc_[_WERBEH\nWERBEH]"
1406 pos_type skipped_sep_vpos = -1;
1409 cursor_vpos = row_pos;
1410 else if (ppos >= end)
1411 cursor_vpos = text_->isRTL(buffer, par) ? row_pos : end;
1412 else if (ppos > row_pos && ppos >= end)
1413 // Place cursor after char at (logical) position pos - 1
1414 cursor_vpos = (bidi.level(ppos - 1) % 2 == 0)
1415 ? bidi.log2vis(ppos - 1) + 1 : bidi.log2vis(ppos - 1);
1417 // Place cursor before char at (logical) position ppos
1418 cursor_vpos = (bidi.level(ppos) % 2 == 0)
1419 ? bidi.log2vis(ppos) : bidi.log2vis(ppos) + 1;
1421 pos_type body_pos = par.beginOfBody();
1423 (body_pos > end || !par.isLineSeparator(body_pos - 1)))
1426 // Use font span to speed things up, see below
1430 // If the last logical character is a separator, skip it, unless
1431 // it's in the last row of a paragraph; see skipped_sep_vpos declaration
1432 if (end > 0 && end < par.size() && par.isSeparator(end - 1))
1433 skipped_sep_vpos = bidi.log2vis(end - 1);
1435 for (pos_type vpos = row_pos; vpos < cursor_vpos; ++vpos) {
1436 // Skip the separator which is at the logical end of the row
1437 if (vpos == skipped_sep_vpos)
1439 pos_type pos = bidi.vis2log(vpos);
1440 if (body_pos > 0 && pos == body_pos - 1) {
1441 FontMetrics const & labelfm = theFontMetrics(
1442 text_->getLabelFont(buffer, par));
1443 x += row.label_hfill + labelfm.width(par.layout()->labelsep);
1444 if (par.isLineSeparator(body_pos - 1))
1445 x -= singleWidth(pit, body_pos - 1);
1448 // Use font span to speed things up, see above
1449 if (pos < font_span.first || pos > font_span.last) {
1450 font_span = par.fontSpan(pos);
1451 font = getDisplayFont(par, pos);
1454 x += pm.singleWidth(pos, font);
1456 if (pm.hfillExpansion(row, pos))
1457 x += (pos >= body_pos) ? row.hfill : row.label_hfill;
1458 else if (par.isSeparator(pos) && pos >= body_pos)
1462 // see correction above
1463 if (boundary_correction) {
1464 if (isRTL(sl, boundary))
1465 x -= singleWidth(pit, ppos);
1467 x += singleWidth(pit, ppos);
1474 int TextMetrics::cursorY(CursorSlice const & sl, bool boundary) const
1476 //lyxerr << "TextMetrics::cursorY: boundary: " << boundary << std::endl;
1477 ParagraphMetrics const & pm = par_metrics_[sl.pit()];
1478 if (pm.rows().empty())
1482 h -= par_metrics_[0].rows()[0].ascent();
1483 for (pit_type pit = 0; pit < sl.pit(); ++pit) {
1484 h += par_metrics_[pit].height();
1487 if (pos && boundary)
1489 size_t const rend = pm.pos2row(pos);
1490 for (size_t rit = 0; rit != rend; ++rit)
1491 h += pm.rows()[rit].height();
1492 h += pm.rows()[rend].ascent();
1497 void TextMetrics::cursorPrevious(Cursor & cur)
1499 pos_type cpos = cur.pos();
1500 pit_type cpar = cur.pit();
1502 int x = cur.x_target();
1503 setCursorFromCoordinates(cur, x, 0);
1504 cur.dispatch(FuncRequest(cur.selection()? LFUN_UP_SELECT: LFUN_UP));
1506 if (cpar == cur.pit() && cpos == cur.pos())
1507 // we have a row which is taller than the workarea. The
1508 // simplest solution is to move to the previous row instead.
1509 cur.dispatch(FuncRequest(cur.selection()? LFUN_UP_SELECT: LFUN_UP));
1512 cur.updateFlags(Update::Force | Update::FitCursor);
1516 void TextMetrics::cursorNext(Cursor & cur)
1518 pos_type cpos = cur.pos();
1519 pit_type cpar = cur.pit();
1521 int x = cur.x_target();
1522 setCursorFromCoordinates(cur, x, cur.bv().workHeight() - 1);
1523 cur.dispatch(FuncRequest(cur.selection()? LFUN_DOWN_SELECT: LFUN_DOWN));
1525 if (cpar == cur.pit() && cpos == cur.pos())
1526 // we have a row which is taller than the workarea. The
1527 // simplest solution is to move to the next row instead.
1529 FuncRequest(cur.selection()? LFUN_DOWN_SELECT: LFUN_DOWN));
1532 cur.updateFlags(Update::Force | Update::FitCursor);
1536 // the cursor set functions have a special mechanism. When they
1537 // realize you left an empty paragraph, they will delete it.
1539 bool TextMetrics::cursorHome(Cursor & cur)
1541 BOOST_ASSERT(text_ == cur.text());
1542 ParagraphMetrics const & pm = par_metrics_[cur.pit()];
1543 Row const & row = pm.getRow(cur.pos(),cur.boundary());
1544 return text_->setCursor(cur, cur.pit(), row.pos());
1548 bool TextMetrics::cursorEnd(Cursor & cur)
1550 BOOST_ASSERT(text_ == cur.text());
1551 // if not on the last row of the par, put the cursor before
1552 // the final space exept if I have a spanning inset or one string
1553 // is so long that we force a break.
1554 pos_type end = cur.textRow().endpos();
1556 // empty text, end-1 is no valid position
1558 bool boundary = false;
1559 if (end != cur.lastpos()) {
1560 if (!cur.paragraph().isLineSeparator(end-1)
1561 && !cur.paragraph().isNewline(end-1))
1566 return text_->setCursor(cur, cur.pit(), end, true, boundary);
1570 void TextMetrics::deleteLineForward(Cursor & cur)
1572 BOOST_ASSERT(text_ == cur.text());
1573 if (cur.lastpos() == 0) {
1574 // Paragraph is empty, so we just go to the right
1575 text_->cursorRight(cur);
1578 cur.selection() = true; // to avoid deletion
1581 // What is this test for ??? (JMarc)
1582 if (!cur.selection())
1583 text_->deleteWordForward(cur);
1585 cap::cutSelection(cur, true, false);
1586 checkBufferStructure(cur.buffer(), cur);
1591 bool TextMetrics::isLastRow(pit_type pit, Row const & row) const
1593 ParagraphList const & pars = text_->paragraphs();
1594 return row.endpos() >= pars[pit].size()
1595 && pit + 1 == pit_type(pars.size());
1599 bool TextMetrics::isFirstRow(pit_type pit, Row const & row) const
1601 return row.pos() == 0 && pit == 0;
1605 int TextMetrics::leftMargin(int max_width, pit_type pit) const
1607 BOOST_ASSERT(pit >= 0);
1608 BOOST_ASSERT(pit < int(text_->paragraphs().size()));
1609 return leftMargin(max_width, pit, text_->paragraphs()[pit].size());
1613 int TextMetrics::leftMargin(int max_width,
1614 pit_type const pit, pos_type const pos) const
1616 ParagraphList const & pars = text_->paragraphs();
1618 BOOST_ASSERT(pit >= 0);
1619 BOOST_ASSERT(pit < int(pars.size()));
1620 Paragraph const & par = pars[pit];
1621 BOOST_ASSERT(pos >= 0);
1622 BOOST_ASSERT(pos <= par.size());
1623 Buffer const & buffer = bv_->buffer();
1624 //lyxerr << "TextMetrics::leftMargin: pit: " << pit << " pos: " << pos << endl;
1625 TextClass const & tclass = buffer.params().getTextClass();
1626 LayoutPtr const & layout = par.layout();
1628 docstring parindent = layout->parindent;
1632 if (text_->isMainText(buffer))
1633 l_margin += changebarMargin();
1635 l_margin += theFontMetrics(buffer.params().getFont()).signedWidth(
1636 tclass.leftmargin());
1638 if (par.getDepth() != 0) {
1639 // find the next level paragraph
1640 pit_type newpar = outerHook(pit, pars);
1641 if (newpar != pit_type(pars.size())) {
1642 if (pars[newpar].layout()->isEnvironment()) {
1643 l_margin = leftMargin(max_width, newpar);
1645 if (par.layout() == tclass.defaultLayout()) {
1646 if (pars[newpar].params().noindent())
1649 parindent = pars[newpar].layout()->parindent;
1654 // This happens after sections in standard classes. The 1.3.x
1655 // code compared depths too, but it does not seem necessary
1657 if (par.layout() == tclass.defaultLayout()
1658 && pit > 0 && pars[pit - 1].layout()->nextnoindent)
1661 Font const labelfont = text_->getLabelFont(buffer, par);
1662 FontMetrics const & labelfont_metrics = theFontMetrics(labelfont);
1664 switch (layout->margintype) {
1665 case MARGIN_DYNAMIC:
1666 if (!layout->leftmargin.empty()) {
1667 l_margin += theFontMetrics(buffer.params().getFont()).signedWidth(
1668 layout->leftmargin);
1670 if (!par.getLabelstring().empty()) {
1671 l_margin += labelfont_metrics.signedWidth(layout->labelindent);
1672 l_margin += labelfont_metrics.width(par.getLabelstring());
1673 l_margin += labelfont_metrics.width(layout->labelsep);
1677 case MARGIN_MANUAL: {
1678 l_margin += labelfont_metrics.signedWidth(layout->labelindent);
1679 // The width of an empty par, even with manual label, should be 0
1680 if (!par.empty() && pos >= par.beginOfBody()) {
1681 if (!par.getLabelWidthString().empty()) {
1682 docstring labstr = par.getLabelWidthString();
1683 l_margin += labelfont_metrics.width(labstr);
1684 l_margin += labelfont_metrics.width(layout->labelsep);
1690 case MARGIN_STATIC: {
1691 l_margin += theFontMetrics(buffer.params().getFont()).
1692 signedWidth(layout->leftmargin) * 4 / (par.getDepth() + 4);
1696 case MARGIN_FIRST_DYNAMIC:
1697 if (layout->labeltype == LABEL_MANUAL) {
1698 if (pos >= par.beginOfBody()) {
1699 l_margin += labelfont_metrics.signedWidth(layout->leftmargin);
1701 l_margin += labelfont_metrics.signedWidth(layout->labelindent);
1704 // Special case to fix problems with
1706 || (layout->labeltype == LABEL_STATIC
1707 && layout->latextype == LATEX_ENVIRONMENT
1708 && !isFirstInSequence(pit, pars))) {
1709 l_margin += labelfont_metrics.signedWidth(layout->leftmargin);
1710 } else if (layout->labeltype != LABEL_TOP_ENVIRONMENT
1711 && layout->labeltype != LABEL_BIBLIO
1712 && layout->labeltype !=
1713 LABEL_CENTERED_TOP_ENVIRONMENT) {
1714 l_margin += labelfont_metrics.signedWidth(layout->labelindent);
1715 l_margin += labelfont_metrics.width(layout->labelsep);
1716 l_margin += labelfont_metrics.width(par.getLabelstring());
1720 case MARGIN_RIGHT_ADDRESS_BOX: {
1722 // ok, a terrible hack. The left margin depends on the widest
1723 // row in this paragraph.
1724 RowList::iterator rit = par.rows().begin();
1725 RowList::iterator end = par.rows().end();
1726 // FIXME: This is wrong.
1727 int minfill = max_width;
1728 for ( ; rit != end; ++rit)
1729 if (rit->fill() < minfill)
1730 minfill = rit->fill();
1731 l_margin += theFontMetrics(params.getFont()).signedWidth(layout->leftmargin);
1732 l_margin += minfill;
1734 // also wrong, but much shorter.
1735 l_margin += max_width / 2;
1740 if (!par.params().leftIndent().zero())
1741 l_margin += par.params().leftIndent().inPixels(max_width);
1745 if (par.params().align() == LYX_ALIGN_LAYOUT)
1746 align = layout->align;
1748 align = par.params().align();
1750 // set the correct parindent
1752 && (layout->labeltype == LABEL_NO_LABEL
1753 || layout->labeltype == LABEL_TOP_ENVIRONMENT
1754 || layout->labeltype == LABEL_CENTERED_TOP_ENVIRONMENT
1755 || (layout->labeltype == LABEL_STATIC
1756 && layout->latextype == LATEX_ENVIRONMENT
1757 && !isFirstInSequence(pit, pars)))
1758 && align == LYX_ALIGN_BLOCK
1759 && !par.params().noindent()
1760 // in some insets, paragraphs are never indented
1761 && !(par.inInset() && par.inInset()->neverIndent(buffer))
1762 // display style insets are always centered, omit indentation
1765 && par.getInset(pos)->display())
1766 && (par.layout() != tclass.defaultLayout()
1767 || buffer.params().paragraph_separation ==
1768 BufferParams::PARSEP_INDENT))
1770 l_margin += theFontMetrics(buffer.params().getFont()).signedWidth(
1778 int TextMetrics::singleWidth(pit_type pit, pos_type pos) const
1780 ParagraphMetrics const & pm = par_metrics_[pit];
1782 return pm.singleWidth(pos, getDisplayFont(text_->getPar(pit), pos));
1786 // only used for inset right now. should also be used for main text
1787 void TextMetrics::draw(PainterInfo & pi, int x, int y) const
1789 if (par_metrics_.empty())
1792 ParMetricsCache::const_iterator it = par_metrics_.begin();
1793 ParMetricsCache::const_iterator const end = par_metrics_.end();
1794 y -= it->second.ascent();
1795 for (; it != end; ++it) {
1796 ParagraphMetrics const & pmi = it->second;
1798 drawParagraph(pi, it->first, x, y);
1804 void TextMetrics::drawParagraph(PainterInfo & pi, pit_type pit, int x, int y) const
1806 // lyxerr << " paintPar: pit: " << pit << " at y: " << y << endl;
1807 int const ww = bv_->workHeight();
1809 bv_->coordCache().parPos()[text_][pit] = Point(x, y);
1811 ParagraphMetrics const & pm = par_metrics_[pit];
1812 if (pm.rows().empty())
1815 RowList::const_iterator const rb = pm.rows().begin();
1816 RowList::const_iterator const re = pm.rows().end();
1821 for (RowList::const_iterator rit = rb; rit != re; ++rit) {
1824 bool const inside = (y + rit->descent() >= 0
1825 && y - rit->ascent() < ww);
1826 // it is not needed to draw on screen if we are not inside.
1827 pi.pain.setDrawingEnabled(inside);
1828 RowPainter rp(pi, *text_, pit, *rit, bidi, x, y);
1830 // Row signature; has row changed since last paint?
1831 bool row_has_changed = rit->changed();
1833 if (!pi.full_repaint && !row_has_changed) {
1834 // Paint the only the insets if the text itself is
1836 rp.paintOnlyInsets();
1837 y += rit->descent();
1841 // Paint the row if a full repaint has been requested or it has
1843 // Clear background of this row
1844 // (if paragraph background was not cleared)
1845 if (!pi.full_repaint && row_has_changed) {
1846 pi.pain.fillRectangle(x, y - rit->ascent(),
1847 width(), rit->height(),
1848 Color_color(Color::color(pi.background_color)));
1851 // Instrumentation for testing row cache (see also
1853 if (lyxerr.debugging(Debug::PAINTING)) {
1854 if (text_->isMainText(bv_->buffer()))
1855 LYXERR(Debug::PAINTING) << "\n{" <<
1856 pi.full_repaint << row_has_changed << "}";
1858 LYXERR(Debug::PAINTING) << "[" <<
1859 pi.full_repaint << row_has_changed << "]";
1862 // Backup full_repaint status and force full repaint
1863 // for inner insets as the Row has been cleared out.
1864 bool tmp = pi.full_repaint;
1865 pi.full_repaint = true;
1868 rp.paintChangeBar();
1874 y += rit->descent();
1875 // Restore full_repaint status.
1876 pi.full_repaint = tmp;
1878 // Re-enable screen drawing for future use of the painter.
1879 pi.pain.setDrawingEnabled(true);
1881 //LYXERR(Debug::PAINTING) << "." << endl;
1885 // only used for inset right now. should also be used for main text
1886 void TextMetrics::drawSelection(PainterInfo & pi, int x, int) const
1888 Cursor & cur = bv_->cursor();
1889 if (!cur.selection())
1891 if (!ptr_cmp(cur.text(), text_))
1894 LYXERR(Debug::DEBUG)
1895 << BOOST_CURRENT_FUNCTION
1896 << "draw selection at " << x
1899 DocIterator beg = cur.selectionBegin();
1900 DocIterator end = cur.selectionEnd();
1902 // the selection doesn't touch the visible screen?
1903 if (bv_funcs::status(bv_, beg) == bv_funcs::CUR_BELOW
1904 || bv_funcs::status(bv_, end) == bv_funcs::CUR_ABOVE)
1907 if (beg.pit() < par_metrics_.begin()->first) {
1908 beg.pit() = par_metrics_.begin()->first;
1911 if (end.pit() > par_metrics_.rbegin()->first) {
1912 end.pit() = par_metrics_.rbegin()->first;
1913 end.pos() = end.lastpos();
1916 ParagraphMetrics const & pm1 = par_metrics_[beg.pit()];
1917 ParagraphMetrics const & pm2 = par_metrics_[end.pit()];
1918 Row const & row1 = pm1.getRow(beg.pos(), beg.boundary());
1919 Row const & row2 = pm2.getRow(end.pos(), end.boundary());
1923 bool const clipAbove =
1924 (bv_funcs::status(bv_, beg) == bv_funcs::CUR_ABOVE);
1928 middleTop = bv_funcs::getPos(*bv_, beg, beg.boundary()).y_ + row1.descent();
1932 bool const clipBelow =
1933 (bv_funcs::status(bv_, end) == bv_funcs::CUR_BELOW);
1935 middleBottom = bv_->workHeight();
1937 middleBottom = bv_funcs::getPos(*bv_, end, end.boundary()).y_ - row2.ascent();
1939 // start and end in the same line?
1940 if (!(clipAbove || clipBelow) && &row1 == &row2)
1941 // then only draw this row's selection
1942 drawRowSelection(pi, x, row1, beg, end, false, false);
1946 DocIterator begRowEnd = beg;
1947 begRowEnd.pos() = row1.endpos();
1948 begRowEnd.boundary(true);
1950 // draw upper rectangle
1951 drawRowSelection(pi, x, row1, beg, begRowEnd, false, true);
1954 if (middleTop < middleBottom) {
1955 // draw middle rectangle
1956 pi.pain.fillRectangle(x, middleTop, width(), middleBottom - middleTop,
1962 DocIterator endRowBeg = end;
1963 endRowBeg.pos() = row2.pos();
1964 endRowBeg.boundary(false);
1966 // draw low rectangle
1967 drawRowSelection(pi, x, row2, endRowBeg, end, true, false);
1973 void TextMetrics::drawRowSelection(PainterInfo & pi, int x, Row const & row,
1974 DocIterator const & beg, DocIterator const & end,
1975 bool drawOnBegMargin, bool drawOnEndMargin) const
1977 Buffer & buffer = bv_->buffer();
1978 DocIterator cur = beg;
1979 int x1 = cursorX(beg.top(), beg.boundary());
1980 int x2 = cursorX(end.top(), end.boundary());
1981 int y1 = bv_funcs::getPos(*bv_, cur, cur.boundary()).y_ - row.ascent();
1982 int y2 = y1 + row.height();
1985 if (drawOnBegMargin) {
1986 if (text_->isRTL(buffer, beg.paragraph()))
1987 pi.pain.fillRectangle(x + x1, y1, width() - x1, y2 - y1, Color::selection);
1989 pi.pain.fillRectangle(x, y1, x1, y2 - y1, Color::selection);
1992 if (drawOnEndMargin) {
1993 if (text_->isRTL(buffer, beg.paragraph()))
1994 pi.pain.fillRectangle(x, y1, x2, y2 - y1, Color::selection);
1996 pi.pain.fillRectangle(x + x2, y1, width() - x2, y2 - y1, Color::selection);
1999 // if we are on a boundary from the beginning, it's probably
2000 // a RTL boundary and we jump to the other side directly as this
2001 // segement is 0-size and confuses the logic below
2003 cur.boundary(false);
2005 // go through row and draw from RTL boundary to RTL boundary
2007 bool drawNow = false;
2009 // simplified cursorRight code below which does not
2010 // descend into insets and which does not go into the
2011 // next line. Compare the logic with the original cursorRight
2013 // if left of boundary -> just jump to right side
2014 // but for RTL boundaries don't, because: abc|DDEEFFghi -> abcDDEEF|Fghi
2015 if (cur.boundary()) {
2016 cur.boundary(false);
2017 } else if (isRTLBoundary(cur.paragraph(), cur.pos() + 1)) {
2018 // in front of RTL boundary -> Stay on this side of the boundary because:
2019 // ab|cDDEEFFghi -> abc|DDEEFFghi
2028 if (cur.pos() == row.endpos())
2033 // the previous segment was just drawn, now the next starts
2034 x1 = cursorX(cur.top(), cur.boundary());
2037 if (!(cur < end) || drawNow) {
2038 x2 = cursorX(cur.top(), cur.boundary());
2039 pi.pain.fillRectangle(x + min(x1,x2), y1, abs(x2 - x1), y2 - y1,
2042 // reset x1, so it is set again next round (which will be on the
2043 // right side of a boundary or at the selection end)
2049 //int TextMetrics::pos2x(pit_type pit, pos_type pos) const
2051 // ParagraphMetrics const & pm = par_metrics_[pit];
2052 // Row const & r = pm.rows()[row];
2058 int defaultRowHeight()
2060 return int(theFontMetrics(Font(Font::ALL_SANE)).maxHeight() * 1.2);