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 "CutAndPaste.h"
30 #include "FontIterator.h"
31 #include "FuncRequest.h"
34 #include "MetricsInfo.h"
35 #include "paragraph_funcs.h"
36 #include "ParagraphParameters.h"
37 #include "ParIterator.h"
38 #include "rowpainter.h"
43 #include "frontends/FontMetrics.h"
44 #include "frontends/Painter.h"
46 #include <boost/current_function.hpp>
56 using frontend::FontMetrics;
60 int numberOfSeparators(Paragraph const & par, Row const & row)
62 pos_type const first = max(row.pos(), par.beginOfBody());
63 pos_type const last = row.endpos() - 1;
65 for (pos_type p = first; p < last; ++p) {
66 if (par.isSeparator(p))
73 int numberOfLabelHfills(Paragraph const & par, Row const & row)
75 pos_type last = row.endpos() - 1;
76 pos_type first = row.pos();
78 // hfill *DO* count at the beginning of paragraphs!
80 while (first < last && par.isHfill(first))
84 last = min(last, par.beginOfBody());
86 for (pos_type p = first; p < last; ++p) {
94 int numberOfHfills(Paragraph const & par, Row const & row)
96 pos_type const last = row.endpos();
97 pos_type first = row.pos();
99 // hfill *DO* count at the beginning of paragraphs!
101 while (first < last && par.isHfill(first))
105 first = max(first, par.beginOfBody());
108 for (pos_type p = first; p < last; ++p) {
117 TextMetrics::TextMetrics(BufferView * bv, Text * text)
118 : bv_(bv), text_(text)
121 max_width_ = bv_->workWidth();
122 dim_.wid = max_width_;
126 //text_->updateLabels(bv->buffer());
130 bool TextMetrics::has(pit_type pit) const
132 return par_metrics_.find(pit) != par_metrics_.end();
136 ParagraphMetrics const & TextMetrics::parMetrics(pit_type pit) const
138 return const_cast<TextMetrics *>(this)->parMetrics(pit, true);
143 pair<pit_type, ParagraphMetrics> const & TextMetrics::first() const
145 pair<pit_type, ParagraphMetrics> const & pm = *par_metrics_.begin();
150 pair<pit_type, ParagraphMetrics> const & TextMetrics::last() const
152 pair<pit_type, ParagraphMetrics> const & pm = *par_metrics_.rbegin();
157 ParagraphMetrics & TextMetrics::parMetrics(pit_type pit,
160 ParMetricsCache::iterator pmc_it = par_metrics_.find(pit);
161 if (pmc_it == par_metrics_.end()) {
162 pmc_it = par_metrics_.insert(
163 make_pair(pit, ParagraphMetrics(text_->getPar(pit)))).first;
165 if (pmc_it->second.rows().empty() && redo) {
168 return pmc_it->second;
172 int TextMetrics::parPosition(pit_type pit) const
174 pair<pit_type, ParagraphMetrics> first = *par_metrics_.begin();
175 pair<pit_type, ParagraphMetrics> last = *par_metrics_.rbegin();
176 if (pit < first.first)
178 else if (pit > last.first)
181 return par_metrics_[pit].position();
185 bool TextMetrics::metrics(MetricsInfo & mi, Dimension & dim, int min_width)
187 BOOST_ASSERT(mi.base.textwidth);
188 max_width_ = mi.base.textwidth;
189 // backup old dimension.
190 Dimension const old_dim = dim_;
193 dim_.wid = min_width;
194 pit_type const npar = text_->paragraphs().size();
196 // If there is more than one row, expand the text to
197 // the full allowable width.
198 dim_.wid = max_width_;
200 //lyxerr << "TextMetrics::metrics: width: " << mi.base.textwidth
201 // << " maxWidth: " << max_width_ << "\nfont: " << mi.base.font << endl;
203 bool changed = false;
205 for (pit_type pit = 0; pit != npar; ++pit) {
206 changed |= redoParagraph(pit);
207 ParagraphMetrics const & pm = par_metrics_[pit];
209 if (dim_.wid < pm.width())
210 dim_.wid = pm.width();
213 dim_.asc = par_metrics_[0].ascent();
214 dim_.des = h - dim_.asc;
215 //lyxerr << "dim_.wid " << dim_.wid << endl;
216 //lyxerr << "dim_.asc " << dim_.asc << endl;
217 //lyxerr << "dim_.des " << dim_.des << endl;
219 changed |= dim_ != old_dim;
225 int TextMetrics::rightMargin(ParagraphMetrics const & pm) const
227 return main_text_? pm.rightMargin(bv_->buffer()) : 0;
231 int TextMetrics::rightMargin(pit_type const pit) const
233 return main_text_? par_metrics_[pit].rightMargin(bv_->buffer()) : 0;
237 void TextMetrics::applyOuterFont(Font & font) const
240 lf.reduce(bv_->buffer().params().getFont());
242 lf.setLanguage(font.language());
247 Font TextMetrics::getDisplayFont(pit_type pit, pos_type pos) const
249 BOOST_ASSERT(pos >= 0);
251 ParagraphList const & pars = text_->paragraphs();
252 Paragraph const & par = pars[pit];
253 LayoutPtr const & layout = par.layout();
254 Buffer const & buffer = bv_->buffer();
256 BufferParams const & params = buffer.params();
257 pos_type const body_pos = par.beginOfBody();
259 // We specialize the 95% common case:
260 if (!par.getDepth()) {
261 Font f = par.getFontSettings(params, pos);
262 if (!text_->isMainText(buffer))
264 bool lab = layout->labeltype == LABEL_MANUAL && pos < body_pos;
266 Font const & lf = lab ? layout->labelfont : layout->font;
267 Font rlf = lab ? layout->reslabelfont : layout->resfont;
269 // In case the default family has been customized
270 if (lf.family() == Font::INHERIT_FAMILY)
271 rlf.setFamily(params.getFont().family());
272 return f.realize(rlf);
275 // The uncommon case need not be optimized as much
276 Font const & layoutfont = pos < body_pos ?
277 layout->labelfont : layout->font;
279 Font font = par.getFontSettings(params, pos);
280 font.realize(layoutfont);
282 if (!text_->isMainText(buffer))
283 applyOuterFont(font);
285 // Realize against environment font information
286 // NOTE: the cast to pit_type should be removed when pit_type
287 // changes to a unsigned integer.
288 if (pit < pit_type(pars.size()))
289 font.realize(outerFont(pit, pars));
291 // Realize with the fonts of lesser depth.
292 font.realize(params.getFont());
298 bool TextMetrics::isRTL(CursorSlice const & sl, bool boundary) const
300 if (!lyxrc.rtl_support || !sl.text())
304 if (boundary && sl.pos() > 0)
307 return getDisplayFont(sl.pit(), sl.pos() + correction).isVisibleRightToLeft();
311 bool TextMetrics::isRTLBoundary(pit_type pit, pos_type pos) const
313 if (!lyxrc.rtl_support)
316 // no RTL boundary at line start
320 Paragraph const & par = text_->getPar(pit);
322 bool left = getDisplayFont(pit, pos - 1).isVisibleRightToLeft();
324 if (pos == par.size())
325 right = par.isRTL(bv_->buffer().params());
327 right = getDisplayFont(pit, pos).isVisibleRightToLeft();
328 return left != right;
332 bool TextMetrics::isRTLBoundary(pit_type pit, pos_type pos,
333 Font const & font) const
335 if (!lyxrc.rtl_support)
338 Paragraph const & par = text_->getPar(pit);
339 bool left = font.isVisibleRightToLeft();
341 if (pos == par.size())
342 right = par.isRTL(bv_->buffer().params());
344 right = getDisplayFont(pit, pos).isVisibleRightToLeft();
345 return left != right;
349 bool TextMetrics::redoParagraph(pit_type const pit)
351 Paragraph & par = text_->getPar(pit);
352 // IMPORTANT NOTE: We pass 'false' explicitely in order to not call
353 // redoParagraph() recursively inside parMetrics.
354 Dimension old_dim = parMetrics(pit, false).dim();
355 ParagraphMetrics & pm = par_metrics_[pit];
358 Buffer & buffer = bv_->buffer();
359 BufferParams const & bparams = buffer.params();
360 main_text_ = (text_ == &buffer.text());
361 bool changed = false;
363 // FIXME This check ought to be done somewhere else. It is the reason
364 // why text_ is not const. But then, where else to do it?
365 // Well, how can you end up with either (a) a biblio environment that
366 // has no InsetBibitem or (b) a biblio environment with more than one
367 // InsetBibitem? I think the answer is: when paragraphs are merged;
368 // when layout is set; when material is pasted.
369 int const moveCursor = par.checkBiblio(buffer.params().trackChanges);
371 const_cast<Cursor &>(bv_->cursor()).posRight();
372 else if (moveCursor < 0) {
373 Cursor & cursor = const_cast<Cursor &>(bv_->cursor());
374 if (cursor.pos() >= -moveCursor)
378 // Optimisation: this is used in the next two loops
379 // so better to calculate that once here.
380 int const right_margin = rightMargin(pm);
383 // FIXME: We should always use getFont(), see documentation of
384 // noFontChange() in Inset.h.
385 Font const bufferfont = buffer.params().getFont();
386 InsetList::const_iterator ii = par.insetlist.begin();
387 InsetList::const_iterator iend = par.insetlist.end();
388 for (; ii != iend; ++ii) {
389 Dimension old_dim = ii->inset->dimension();
391 int const w = max_width_ - leftMargin(max_width_, pit, ii->pos)
393 Font const & font = ii->inset->noFontChange() ?
394 bufferfont : getDisplayFont(pit, ii->pos);
395 MetricsInfo mi(bv_, font, w);
396 changed |= ii->inset->metrics(mi, dim);
397 changed |= (old_dim != dim);
400 Cursor const & cur = bv_->cursor();
401 DocIterator sel_beg = cur.selectionBegin();
402 DocIterator sel_end = cur.selectionEnd();
403 bool selection = cur.selection()
405 && cur.text() == text_
406 // if the anchor is outside, this is not our selection
407 && cur.anchor().text() == text_
408 && pit >= sel_beg.pit() && pit <= sel_end.pit();
410 // We care only about visible selection.
412 if (pit != sel_beg.pit()) {
416 if (pit != sel_end.pit()) {
418 sel_end.pos() = sel_end.lastpos();
422 par.setBeginOfBody();
424 size_t row_index = 0;
425 // maximum pixel width of a row
426 int width = max_width_ - right_margin; // - leftMargin(max_width_, pit, row);
429 pos_type end = rowBreakPoint(width, pit, first);
430 if (row_index || end < par.size())
431 // If there is more than one row, expand the text to
432 // the full allowable width. This setting here is needed
433 // for the computeRowMetrics below().
434 dim_.wid = max_width_;
436 dim.wid = rowWidth(right_margin, pit, first, end);
437 boost::tie(dim.asc, dim.des) = rowHeight(pit, first, end);
438 if (row_index == pm.rows().size())
439 pm.rows().push_back(Row());
440 Row & row = pm.rows()[row_index];
441 row.setChanged(false);
445 row.setSelection(sel_beg.pos(), sel_end.pos());
447 row.setSelection(-1, -1);
448 row.setDimension(dim);
449 computeRowMetrics(pit, row);
450 pm.computeRowSignature(row, bparams);
454 pm.dim().wid = std::max(pm.dim().wid, dim.wid);
455 pm.dim().des += dim.height();
456 } while (first < par.size());
458 if (row_index < pm.rows().size())
459 pm.rows().resize(row_index);
461 // Make sure that if a par ends in newline, there is one more row
463 if (first > 0 && par.isNewline(first - 1)) {
465 dim.wid = rowWidth(right_margin, pit, first, first);
466 boost::tie(dim.asc, dim.des) = rowHeight(pit, first, first);
467 if (row_index == pm.rows().size())
468 pm.rows().push_back(Row());
469 Row & row = pm.rows()[row_index];
470 row.setChanged(false);
473 row.setDimension(dim);
474 computeRowMetrics(pit, row);
475 pm.computeRowSignature(row, bparams);
476 pm.dim().des += dim.height();
479 pm.dim().asc += pm.rows()[0].ascent();
480 pm.dim().des -= pm.rows()[0].ascent();
482 changed |= old_dim.height() != pm.dim().height();
488 void TextMetrics::computeRowMetrics(pit_type const pit,
496 Buffer & buffer = bv_->buffer();
497 Paragraph const & par = text_->getPar(pit);
499 double w = dim_.wid - row.width();
500 // FIXME: put back this assertion when the crash on new doc is solved.
501 //BOOST_ASSERT(w >= 0);
503 //lyxerr << "\ndim_.wid " << dim_.wid << endl;
504 //lyxerr << "row.width() " << row.width() << endl;
505 //lyxerr << "w " << w << endl;
507 bool const is_rtl = text_->isRTL(buffer, par);
509 row.x = rightMargin(pit);
511 row.x = leftMargin(max_width_, pit, row.pos());
513 // is there a manual margin with a manual label
514 LayoutPtr const & layout = par.layout();
516 if (layout->margintype == MARGIN_MANUAL
517 && layout->labeltype == LABEL_MANUAL) {
518 /// We might have real hfills in the label part
519 int nlh = numberOfLabelHfills(par, row);
521 // A manual label par (e.g. List) has an auto-hfill
522 // between the label text and the body of the
524 // But we don't want to do this auto hfill if the par
529 if (nlh && !par.getLabelWidthString().empty())
530 row.label_hfill = labelFill(pit, row) / double(nlh);
533 // are there any hfills in the row?
534 int const nh = numberOfHfills(par, row);
539 // we don't have to look at the alignment if it is ALIGN_LEFT and
540 // if the row is already larger then the permitted width as then
541 // we force the LEFT_ALIGN'edness!
542 } else if (int(row.width()) < max_width_) {
543 // is it block, flushleft or flushright?
544 // set x how you need it
546 if (par.params().align() == LYX_ALIGN_LAYOUT)
547 align = layout->align;
549 align = par.params().align();
551 // Display-style insets should always be on a centred row
552 // The test on par.size() is to catch zero-size pars, which
553 // would trigger the assert in Paragraph::getInset().
554 //inset = par.size() ? par.getInset(row.pos()) : 0;
555 if (row.pos() < par.size()
556 && par.isInset(row.pos()))
558 switch(par.getInset(row.pos())->display()) {
559 case Inset::AlignLeft:
560 align = LYX_ALIGN_BLOCK;
562 case Inset::AlignCenter:
563 align = LYX_ALIGN_CENTER;
566 case Inset::AlignRight:
567 // unchanged (use align)
573 case LYX_ALIGN_BLOCK: {
574 int const ns = numberOfSeparators(par, row);
575 bool disp_inset = false;
576 if (row.endpos() < par.size()) {
577 Inset const * in = par.getInset(row.endpos());
579 disp_inset = in->display();
581 // If we have separators, this is not the last row of a
582 // par, does not end in newline, and is not row above a
583 // display inset... then stretch it
585 && row.endpos() < par.size()
586 && !par.isNewline(row.endpos() - 1)
589 row.separator = w / ns;
590 //lyxerr << "row.separator " << row.separator << endl;
591 //lyxerr << "ns " << ns << endl;
597 case LYX_ALIGN_RIGHT:
600 case LYX_ALIGN_CENTER:
607 pos_type body_pos = par.beginOfBody();
608 pos_type end = row.endpos();
611 && (body_pos > end || !par.isLineSeparator(body_pos - 1)))
613 row.x += theFontMetrics(text_->getLabelFont(buffer, par)).
614 width(layout->labelsep);
616 row.x += row.label_hfill;
622 int TextMetrics::labelFill(pit_type const pit, Row const & row) const
624 Buffer & buffer = bv_->buffer();
625 Paragraph const & par = text_->getPar(pit);
627 pos_type last = par.beginOfBody();
628 BOOST_ASSERT(last > 0);
630 // -1 because a label ends with a space that is in the label
633 // a separator at this end does not count
634 if (par.isLineSeparator(last))
638 for (pos_type i = row.pos(); i <= last; ++i)
639 w += singleWidth(pit, i);
641 docstring const & label = par.params().labelWidthString();
645 FontMetrics const & fm
646 = theFontMetrics(text_->getLabelFont(buffer, par));
648 return max(0, fm.width(label) - w);
654 // this needs special handling - only newlines count as a break point
655 pos_type addressBreakPoint(pos_type i, Paragraph const & par)
657 pos_type const end = par.size();
660 if (par.isNewline(i))
669 int TextMetrics::labelEnd(pit_type const pit) const
671 // labelEnd is only needed if the layout fills a flushleft label.
672 if (text_->getPar(pit).layout()->margintype != MARGIN_MANUAL)
674 // return the beginning of the body
675 return leftMargin(max_width_, pit);
679 pit_type TextMetrics::rowBreakPoint(int width, pit_type const pit,
682 Buffer & buffer = bv_->buffer();
683 ParagraphMetrics const & pm = par_metrics_[pit];
684 Paragraph const & par = text_->getPar(pit);
685 pos_type const end = par.size();
686 if (pos == end || width < 0)
689 LayoutPtr const & layout = par.layout();
691 if (layout->margintype == MARGIN_RIGHT_ADDRESS_BOX)
692 return addressBreakPoint(pos, par);
694 pos_type const body_pos = par.beginOfBody();
697 // Now we iterate through until we reach the right margin
698 // or the end of the par, then choose the possible break
701 int label_end = labelEnd(pit);
702 int const left = leftMargin(max_width_, pit, pos);
705 // pixel width since last breakpoint
708 FontIterator fi = FontIterator(*this, par, pit, pos);
709 pos_type point = end;
711 for ( ; i < end; ++i, ++fi) {
712 int thiswidth = pm.singleWidth(i, *fi);
714 // add the auto-hfill from label end to the body
715 if (body_pos && i == body_pos) {
716 FontMetrics const & fm = theFontMetrics(
717 text_->getLabelFont(buffer, par));
718 int add = fm.width(layout->labelsep);
719 if (par.isLineSeparator(i - 1))
720 add -= singleWidth(pit, i - 1);
722 add = std::max(add, label_end - x);
727 chunkwidth += thiswidth;
729 // break before a character that will fall off
730 // the right of the row
732 // if no break before, break here
733 if (point == end || chunkwidth >= width - left) {
740 // exit on last registered breakpoint:
744 if (par.isNewline(i)) {
750 if (par.isInset(i + 1) && par.getInset(i + 1)->display()) {
755 if (par.isInset(i) && par.getInset(i)->display()) {
761 if (!par.isInset(i) || par.getInset(i)->isChar()) {
762 // some insets are line separators too
763 if (par.isLineSeparator(i)) {
764 // register breakpoint:
771 // maybe found one, but the par is short enough.
772 if (i == end && x < width)
775 // manual labels cannot be broken in LaTeX. But we
776 // want to make our on-screen rendering of footnotes
778 if (body_pos && point < body_pos)
785 int TextMetrics::rowWidth(int right_margin, pit_type const pit,
786 pos_type const first, pos_type const end) const
788 Buffer & buffer = bv_->buffer();
789 // get the pure distance
790 ParagraphMetrics const & pm = par_metrics_[pit];
791 Paragraph const & par = text_->getPar(pit);
792 int w = leftMargin(max_width_, pit, first);
793 int label_end = labelEnd(pit);
795 pos_type const body_pos = par.beginOfBody();
799 FontIterator fi = FontIterator(*this, par, pit, i);
800 for ( ; i < end; ++i, ++fi) {
801 if (body_pos > 0 && i == body_pos) {
802 FontMetrics const & fm = theFontMetrics(
803 text_->getLabelFont(buffer, par));
804 w += fm.width(par.layout()->labelsep);
805 if (par.isLineSeparator(i - 1))
806 w -= singleWidth(pit, i - 1);
807 w = max(w, label_end);
809 w += pm.singleWidth(i, *fi);
813 if (body_pos > 0 && body_pos >= end) {
814 FontMetrics const & fm = theFontMetrics(
815 text_->getLabelFont(buffer, par));
816 w += fm.width(par.layout()->labelsep);
817 if (end > 0 && par.isLineSeparator(end - 1))
818 w -= singleWidth(pit, end - 1);
819 w = max(w, label_end);
822 return w + right_margin;
826 boost::tuple<int, int> TextMetrics::rowHeight(pit_type const pit, pos_type const first,
827 pos_type const end) const
829 Paragraph const & par = text_->getPar(pit);
830 // get the maximum ascent and the maximum descent
831 double layoutasc = 0;
832 double layoutdesc = 0;
833 double const dh = defaultRowHeight();
835 // ok, let us initialize the maxasc and maxdesc value.
836 // Only the fontsize count. The other properties
837 // are taken from the layoutfont. Nicer on the screen :)
838 LayoutPtr const & layout = par.layout();
840 // as max get the first character of this row then it can
841 // increase but not decrease the height. Just some point to
842 // start with so we don't have to do the assignment below too
844 Buffer const & buffer = bv_->buffer();
845 Font font = getDisplayFont(pit, first);
846 Font::FONT_SIZE const tmpsize = font.size();
847 font = text_->getLayoutFont(buffer, pit);
848 Font::FONT_SIZE const size = font.size();
849 font.setSize(tmpsize);
851 Font labelfont = text_->getLabelFont(buffer, par);
853 FontMetrics const & labelfont_metrics = theFontMetrics(labelfont);
854 FontMetrics const & fontmetrics = theFontMetrics(font);
856 // these are minimum values
857 double const spacing_val = layout->spacing.getValue()
858 * text_->spacing(buffer, par);
859 //lyxerr << "spacing_val = " << spacing_val << endl;
860 int maxasc = int(fontmetrics.maxAscent() * spacing_val);
861 int maxdesc = int(fontmetrics.maxDescent() * spacing_val);
863 // insets may be taller
864 InsetList::const_iterator ii = par.insetlist.begin();
865 InsetList::const_iterator iend = par.insetlist.end();
866 for ( ; ii != iend; ++ii) {
867 if (ii->pos >= first && ii->pos < end) {
868 maxasc = max(maxasc, ii->inset->ascent());
869 maxdesc = max(maxdesc, ii->inset->descent());
873 // Check if any custom fonts are larger (Asger)
874 // This is not completely correct, but we can live with the small,
875 // cosmetic error for now.
878 Font::FONT_SIZE maxsize =
879 par.highestFontInRange(first, end, size);
880 if (maxsize > font.size()) {
881 // use standard paragraph font with the maximal size
883 maxfont.setSize(maxsize);
884 FontMetrics const & maxfontmetrics = theFontMetrics(maxfont);
885 maxasc = max(maxasc, maxfontmetrics.maxAscent());
886 maxdesc = max(maxdesc, maxfontmetrics.maxDescent());
889 // This is nicer with box insets:
893 ParagraphList const & pars = text_->paragraphs();
897 BufferParams const & bufparams = buffer.params();
898 // some parskips VERY EASY IMPLEMENTATION
899 if (bufparams.paragraph_separation
900 == BufferParams::PARSEP_SKIP
901 && par.ownerCode() != Inset::ERT_CODE
902 && par.ownerCode() != Inset::LISTINGS_CODE
904 && ((layout->isParagraph() && par.getDepth() == 0)
905 || (pars[pit - 1].layout()->isParagraph()
906 && pars[pit - 1].getDepth() == 0)))
908 maxasc += bufparams.getDefSkip().inPixels(*bv_);
911 if (par.params().startOfAppendix())
912 maxasc += int(3 * dh);
914 // This is special code for the chapter, since the label of this
915 // layout is printed in an extra row
916 if (layout->counter == "chapter"
917 && !par.params().labelString().empty()) {
918 labeladdon = int(labelfont_metrics.maxHeight()
919 * layout->spacing.getValue()
920 * text_->spacing(buffer, par));
923 // special code for the top label
924 if ((layout->labeltype == LABEL_TOP_ENVIRONMENT
925 || layout->labeltype == LABEL_BIBLIO
926 || layout->labeltype == LABEL_CENTERED_TOP_ENVIRONMENT)
927 && isFirstInSequence(pit, pars)
928 && !par.getLabelstring().empty())
931 labelfont_metrics.maxHeight()
932 * layout->spacing.getValue()
933 * text_->spacing(buffer, par)
934 + (layout->topsep + layout->labelbottomsep) * dh);
937 // Add the layout spaces, for example before and after
938 // a section, or between the items of a itemize or enumerate
941 pit_type prev = depthHook(pit, pars, par.getDepth());
942 Paragraph const & prevpar = pars[prev];
944 && prevpar.layout() == layout
945 && prevpar.getDepth() == par.getDepth()
946 && prevpar.getLabelWidthString()
947 == par.getLabelWidthString()) {
948 layoutasc = layout->itemsep * dh;
949 } else if (pit != 0 || first != 0) {
950 if (layout->topsep > 0)
951 layoutasc = layout->topsep * dh;
954 prev = outerHook(pit, pars);
955 if (prev != pit_type(pars.size())) {
956 maxasc += int(pars[prev].layout()->parsep * dh);
957 } else if (pit != 0) {
958 Paragraph const & prevpar = pars[pit - 1];
959 if (prevpar.getDepth() != 0 ||
960 prevpar.layout() == layout) {
961 maxasc += int(layout->parsep * dh);
966 // is it a bottom line?
967 if (end >= par.size()) {
968 // add the layout spaces, for example before and after
969 // a section, or between the items of a itemize or enumerate
971 pit_type nextpit = pit + 1;
972 if (nextpit != pit_type(pars.size())) {
977 if (pars[cpit].getDepth() > pars[nextpit].getDepth()) {
978 usual = pars[cpit].layout()->bottomsep * dh;
979 cpit = depthHook(cpit, pars, pars[nextpit].getDepth());
980 if (pars[cpit].layout() != pars[nextpit].layout()
981 || pars[nextpit].getLabelWidthString() != pars[cpit].getLabelWidthString())
983 unusual = pars[cpit].layout()->bottomsep * dh;
985 layoutdesc = max(unusual, usual);
986 } else if (pars[cpit].getDepth() == pars[nextpit].getDepth()) {
987 if (pars[cpit].layout() != pars[nextpit].layout()
988 || pars[nextpit].getLabelWidthString() != pars[cpit].getLabelWidthString())
989 layoutdesc = int(pars[cpit].layout()->bottomsep * dh);
994 // incalculate the layout spaces
995 maxasc += int(layoutasc * 2 / (2 + pars[pit].getDepth()));
996 maxdesc += int(layoutdesc * 2 / (2 + pars[pit].getDepth()));
998 // FIXME: the correct way is to do the following is to move the
999 // following code in another method specially tailored for the
1000 // main Text. The following test is thus bogus.
1001 // Top and bottom margin of the document (only at top-level)
1003 if (pit == 0 && first == 0)
1005 if (pit + 1 == pit_type(pars.size()) &&
1006 end == par.size() &&
1007 !(end > 0 && par.isNewline(end - 1)))
1011 return boost::make_tuple(maxasc + labeladdon, maxdesc);
1015 // x is an absolute screen coord
1016 // returns the column near the specified x-coordinate of the row
1017 // x is set to the real beginning of this column
1018 pos_type TextMetrics::getColumnNearX(pit_type const pit,
1019 Row const & row, int & x, bool & boundary) const
1021 Buffer const & buffer = bv_->buffer();
1023 /// For the main Text, it is possible that this pit is not
1024 /// yet in the CoordCache when moving cursor up.
1025 /// x Paragraph coordinate is always 0 for main text anyway.
1026 int const xo = origin_.x_;
1028 Paragraph const & par = text_->getPar(pit);
1029 ParagraphMetrics const & pm = par_metrics_[pit];
1031 bidi.computeTables(par, buffer, row);
1033 pos_type vc = row.pos();
1034 pos_type end = row.endpos();
1036 LayoutPtr const & layout = par.layout();
1038 bool left_side = false;
1040 pos_type body_pos = par.beginOfBody();
1042 double tmpx = row.x;
1043 double last_tmpx = tmpx;
1046 (body_pos > end || !par.isLineSeparator(body_pos - 1)))
1049 // check for empty row
1055 while (vc < end && tmpx <= x) {
1056 c = bidi.vis2log(vc);
1058 if (body_pos > 0 && c == body_pos - 1) {
1059 FontMetrics const & fm = theFontMetrics(
1060 text_->getLabelFont(buffer, par));
1061 tmpx += row.label_hfill + fm.width(layout->labelsep);
1062 if (par.isLineSeparator(body_pos - 1))
1063 tmpx -= singleWidth(pit, body_pos - 1);
1066 if (pm.hfillExpansion(row, c)) {
1067 tmpx += singleWidth(pit, c);
1071 tmpx += row.label_hfill;
1072 } else if (par.isSeparator(c)) {
1073 tmpx += singleWidth(pit, c);
1075 tmpx += row.separator;
1077 tmpx += singleWidth(pit, c);
1082 if ((tmpx + last_tmpx) / 2 > x) {
1087 BOOST_ASSERT(vc <= end); // This shouldn't happen.
1090 // This (rtl_support test) is not needed, but gives
1091 // some speedup if rtl_support == false
1092 bool const lastrow = lyxrc.rtl_support && row.endpos() == par.size();
1094 // If lastrow is false, we don't need to compute
1095 // the value of rtl.
1096 bool const rtl = lastrow ? text_->isRTL(buffer, par) : false;
1098 ((rtl && left_side && vc == row.pos() && x < tmpx - 5) ||
1099 (!rtl && !left_side && vc == end && x > tmpx + 5)))
1101 else if (vc == row.pos()) {
1102 c = bidi.vis2log(vc);
1103 if (bidi.level(c) % 2 == 1)
1106 c = bidi.vis2log(vc - 1);
1107 bool const rtl = (bidi.level(c) % 2 == 1);
1108 if (left_side == rtl) {
1110 boundary = isRTLBoundary(pit, c);
1114 // I believe this code is not needed anymore (Jug 20050717)
1116 // The following code is necessary because the cursor position past
1117 // the last char in a row is logically equivalent to that before
1118 // the first char in the next row. That's why insets causing row
1119 // divisions -- Newline and display-style insets -- must be treated
1120 // specially, so cursor up/down doesn't get stuck in an air gap -- MV
1121 // Newline inset, air gap below:
1122 if (row.pos() < end && c >= end && par.isNewline(end - 1)) {
1123 if (bidi.level(end -1) % 2 == 0)
1124 tmpx -= singleWidth(pit, end - 1);
1126 tmpx += singleWidth(pit, end - 1);
1130 // Air gap above display inset:
1131 if (row.pos() < end && c >= end && end < par.size()
1132 && par.isInset(end) && par.getInset(end)->display()) {
1135 // Air gap below display inset:
1136 if (row.pos() < end && c >= end && par.isInset(end - 1)
1137 && par.getInset(end - 1)->display()) {
1143 pos_type const col = c - row.pos();
1145 if (!c || end == par.size())
1148 if (c==end && !par.isLineSeparator(c-1) && !par.isNewline(c-1)) {
1153 return min(col, end - 1 - row.pos());
1157 pos_type TextMetrics::x2pos(pit_type pit, int row, int x) const
1159 // We play safe and use parMetrics(pit) to make sure the
1160 // ParagraphMetrics will be redone and OK to use if needed.
1161 // Otherwise we would use an empty ParagraphMetrics in
1162 // upDownInText() while in selection mode.
1163 ParagraphMetrics const & pm = parMetrics(pit);
1165 BOOST_ASSERT(row < int(pm.rows().size()));
1167 Row const & r = pm.rows()[row];
1168 return r.pos() + getColumnNearX(pit, r, x, bound);
1172 void TextMetrics::newParMetricsDown()
1174 pair<pit_type, ParagraphMetrics> const & last = *par_metrics_.rbegin();
1175 pit_type const pit = last.first + 1;
1176 if (pit == text_->paragraphs().size())
1179 // do it and update its position.
1181 par_metrics_[pit].setPosition(last.second.position()
1182 + last.second.descent());
1186 void TextMetrics::newParMetricsUp()
1188 pair<pit_type, ParagraphMetrics> const & first = *par_metrics_.begin();
1189 if (first.first == 0)
1192 pit_type const pit = first.first - 1;
1193 // do it and update its position.
1195 par_metrics_[pit].setPosition(first.second.position()
1196 - first.second.ascent());
1199 // y is screen coordinate
1200 pit_type TextMetrics::getPitNearY(int y)
1202 BOOST_ASSERT(!text_->paragraphs().empty());
1203 LYXERR(Debug::DEBUG)
1204 << BOOST_CURRENT_FUNCTION
1205 << ": y: " << y << " cache size: " << par_metrics_.size()
1208 // look for highest numbered paragraph with y coordinate less than given y
1211 ParMetricsCache::const_iterator it = par_metrics_.begin();
1212 ParMetricsCache::const_iterator et = par_metrics_.end();
1213 ParMetricsCache::const_iterator last = et; last--;
1215 ParagraphMetrics const & pm = it->second;
1217 // If we are off-screen (before the visible part)
1219 // and even before the first paragraph in the cache.
1220 && y < it->second.position() - int(pm.ascent())) {
1221 // and we are not at the first paragraph in the inset.
1224 // then this is the paragraph we are looking for.
1225 pit = it->first - 1;
1226 // rebreak it and update the CoordCache.
1228 par_metrics_[pit].setPosition(it->second.position() - pm.descent());
1232 ParagraphMetrics const & pm_last = par_metrics_[last->first];
1234 // If we are off-screen (after the visible part)
1235 if (y > bv_->workHeight()
1236 // and even after the first paragraph in the cache.
1237 && y >= last->second.position() + int(pm_last.descent())) {
1238 pit = last->first + 1;
1239 // and we are not at the last paragraph in the inset.
1240 if (pit == int(text_->paragraphs().size()))
1242 // then this is the paragraph we are looking for.
1243 // rebreak it and update the CoordCache.
1245 par_metrics_[pit].setPosition(last->second.position() + pm_last.ascent());
1249 for (; it != et; ++it) {
1250 LYXERR(Debug::DEBUG)
1251 << BOOST_CURRENT_FUNCTION
1252 << " examining: pit: " << it->first
1253 << " y: " << it->second.position()
1256 ParagraphMetrics const & pm = par_metrics_[it->first];
1258 if (it->first >= pit && int(it->second.position()) - int(pm.ascent()) <= y) {
1260 yy = it->second.position();
1264 LYXERR(Debug::DEBUG)
1265 << BOOST_CURRENT_FUNCTION
1266 << ": found best y: " << yy << " for pit: " << pit
1273 Row const & TextMetrics::getRowNearY(int y, pit_type pit) const
1275 ParagraphMetrics const & pm = par_metrics_[pit];
1277 int yy = pm.position() - pm.ascent();
1278 BOOST_ASSERT(!pm.rows().empty());
1279 RowList::const_iterator rit = pm.rows().begin();
1280 RowList::const_iterator const rlast = boost::prior(pm.rows().end());
1281 for (; rit != rlast; yy += rit->height(), ++rit)
1282 if (yy + rit->height() > y)
1288 // x,y are absolute screen coordinates
1289 // sets cursor recursively descending into nested editable insets
1290 Inset * TextMetrics::editXY(Cursor & cur, int x, int y)
1292 if (lyxerr.debugging(Debug::WORKAREA)) {
1293 lyxerr << "TextMetrics::editXY(cur, " << x << ", " << y << ")" << std::endl;
1294 cur.bv().coordCache().dump();
1296 pit_type pit = getPitNearY(y);
1297 BOOST_ASSERT(pit != -1);
1299 Row const & row = getRowNearY(y, pit);
1302 int xx = x; // is modified by getColumnNearX
1303 pos_type const pos = row.pos()
1304 + getColumnNearX(pit, row, xx, bound);
1307 cur.boundary(bound);
1310 // try to descend into nested insets
1311 Inset * inset = checkInsetHit(x, y);
1312 //lyxerr << "inset " << inset << " hit at x: " << x << " y: " << y << endl;
1314 // Either we deconst editXY or better we move current_font
1315 // and real_current_font to Cursor
1316 // FIXME: what is needed now that current_font and real_current_font
1318 cur.setCurrentFont();
1322 ParagraphList const & pars = text_->paragraphs();
1323 Inset const * insetBefore = pos? pars[pit].getInset(pos - 1): 0;
1324 //Inset * insetBehind = pars[pit].getInset(pos);
1326 // This should be just before or just behind the
1327 // cursor position set above.
1328 BOOST_ASSERT((pos != 0 && inset == insetBefore)
1329 || inset == pars[pit].getInset(pos));
1331 // Make sure the cursor points to the position before
1333 if (inset == insetBefore) {
1335 cur.boundary(false);
1338 // Try to descend recursively inside the inset.
1339 inset = inset->editXY(cur, x, y);
1341 if (cur.top().text() == text_)
1342 cur.setCurrentFont();
1347 void TextMetrics::setCursorFromCoordinates(Cursor & cur, int const x, int const y)
1349 BOOST_ASSERT(text_ == cur.text());
1350 pit_type pit = getPitNearY(y);
1352 ParagraphMetrics const & pm = par_metrics_[pit];
1354 int yy = pm.position() - pm.ascent();
1355 LYXERR(Debug::DEBUG)
1356 << BOOST_CURRENT_FUNCTION
1360 << " yy: " << yy << endl;
1363 BOOST_ASSERT(pm.rows().size());
1364 for (; r < int(pm.rows().size()) - 1; ++r) {
1365 Row const & row = pm.rows()[r];
1366 if (int(yy + row.height()) > y)
1371 Row const & row = pm.rows()[r];
1373 LYXERR(Debug::DEBUG)
1374 << BOOST_CURRENT_FUNCTION
1376 << " from pos: " << row.pos()
1381 pos_type const pos = row.pos() + getColumnNearX(pit, row, xx, bound);
1383 LYXERR(Debug::DEBUG)
1384 << BOOST_CURRENT_FUNCTION
1385 << ": setting cursor pit: " << pit
1389 text_->setCursor(cur, pit, pos, true, bound);
1390 // remember new position.
1395 //takes screen x,y coordinates
1396 Inset * TextMetrics::checkInsetHit(int x, int y)
1398 pit_type pit = getPitNearY(y);
1399 BOOST_ASSERT(pit != -1);
1401 Paragraph const & par = text_->paragraphs()[pit];
1403 LYXERR(Debug::DEBUG)
1404 << BOOST_CURRENT_FUNCTION
1409 InsetList::const_iterator iit = par.insetlist.begin();
1410 InsetList::const_iterator iend = par.insetlist.end();
1411 for (; iit != iend; ++iit) {
1412 Inset * inset = iit->inset;
1414 LYXERR(Debug::DEBUG)
1415 << BOOST_CURRENT_FUNCTION
1416 << ": examining inset " << inset << endl;
1418 if (bv_->coordCache().getInsets().has(inset))
1419 LYXERR(Debug::DEBUG)
1420 << BOOST_CURRENT_FUNCTION
1421 << ": xo: " << inset->xo(*bv_) << "..."
1422 << inset->xo(*bv_) + inset->width()
1423 << " yo: " << inset->yo(*bv_) - inset->ascent()
1425 << inset->yo(*bv_) + inset->descent()
1428 LYXERR(Debug::DEBUG)
1429 << BOOST_CURRENT_FUNCTION
1430 << ": inset has no cached position" << endl;
1432 if (inset->covers(*bv_, x, y)) {
1433 LYXERR(Debug::DEBUG)
1434 << BOOST_CURRENT_FUNCTION
1435 << ": Hit inset: " << inset << endl;
1439 LYXERR(Debug::DEBUG)
1440 << BOOST_CURRENT_FUNCTION
1441 << ": No inset hit. " << endl;
1446 int TextMetrics::cursorX(CursorSlice const & sl,
1447 bool boundary) const
1449 BOOST_ASSERT(sl.text() == text_);
1450 pit_type const pit = sl.pit();
1451 Paragraph const & par = text_->paragraphs()[pit];
1452 ParagraphMetrics const & pm = par_metrics_[pit];
1453 if (pm.rows().empty())
1456 pos_type ppos = sl.pos();
1457 // Correct position in front of big insets
1458 bool const boundary_correction = ppos != 0 && boundary;
1459 if (boundary_correction)
1462 Row const & row = pm.getRow(sl.pos(), boundary);
1464 pos_type cursor_vpos = 0;
1466 Buffer const & buffer = bv_->buffer();
1469 bidi.computeTables(par, buffer, row);
1471 pos_type const row_pos = row.pos();
1472 pos_type const end = row.endpos();
1473 // Spaces at logical line breaks in bidi text must be skipped during
1474 // cursor positioning. However, they may appear visually in the middle
1475 // of a row; they must be skipped, wherever they are...
1476 // * logically "abc_[HEBREW_\nHEBREW]"
1477 // * visually "abc_[_WERBEH\nWERBEH]"
1478 pos_type skipped_sep_vpos = -1;
1481 cursor_vpos = row_pos;
1482 else if (ppos >= end)
1483 cursor_vpos = text_->isRTL(buffer, par) ? row_pos : end;
1484 else if (ppos > row_pos && ppos >= end)
1485 // Place cursor after char at (logical) position pos - 1
1486 cursor_vpos = (bidi.level(ppos - 1) % 2 == 0)
1487 ? bidi.log2vis(ppos - 1) + 1 : bidi.log2vis(ppos - 1);
1489 // Place cursor before char at (logical) position ppos
1490 cursor_vpos = (bidi.level(ppos) % 2 == 0)
1491 ? bidi.log2vis(ppos) : bidi.log2vis(ppos) + 1;
1493 pos_type body_pos = par.beginOfBody();
1495 (body_pos > end || !par.isLineSeparator(body_pos - 1)))
1498 // Use font span to speed things up, see below
1502 // If the last logical character is a separator, skip it, unless
1503 // it's in the last row of a paragraph; see skipped_sep_vpos declaration
1504 if (end > 0 && end < par.size() && par.isSeparator(end - 1))
1505 skipped_sep_vpos = bidi.log2vis(end - 1);
1507 for (pos_type vpos = row_pos; vpos < cursor_vpos; ++vpos) {
1508 // Skip the separator which is at the logical end of the row
1509 if (vpos == skipped_sep_vpos)
1511 pos_type pos = bidi.vis2log(vpos);
1512 if (body_pos > 0 && pos == body_pos - 1) {
1513 FontMetrics const & labelfm = theFontMetrics(
1514 text_->getLabelFont(buffer, par));
1515 x += row.label_hfill + labelfm.width(par.layout()->labelsep);
1516 if (par.isLineSeparator(body_pos - 1))
1517 x -= singleWidth(pit, body_pos - 1);
1520 // Use font span to speed things up, see above
1521 if (pos < font_span.first || pos > font_span.last) {
1522 font_span = par.fontSpan(pos);
1523 font = getDisplayFont(pit, pos);
1526 x += pm.singleWidth(pos, font);
1528 if (pm.hfillExpansion(row, pos))
1529 x += (pos >= body_pos) ? row.hfill : row.label_hfill;
1530 else if (par.isSeparator(pos) && pos >= body_pos)
1534 // see correction above
1535 if (boundary_correction) {
1536 if (isRTL(sl, boundary))
1537 x -= singleWidth(pit, ppos);
1539 x += singleWidth(pit, ppos);
1546 int TextMetrics::cursorY(CursorSlice const & sl, bool boundary) const
1548 //lyxerr << "TextMetrics::cursorY: boundary: " << boundary << std::endl;
1549 ParagraphMetrics const & pm = par_metrics_[sl.pit()];
1550 if (pm.rows().empty())
1554 h -= par_metrics_[0].rows()[0].ascent();
1555 for (pit_type pit = 0; pit < sl.pit(); ++pit) {
1556 h += par_metrics_[pit].height();
1559 if (pos && boundary)
1561 size_t const rend = pm.pos2row(pos);
1562 for (size_t rit = 0; rit != rend; ++rit)
1563 h += pm.rows()[rit].height();
1564 h += pm.rows()[rend].ascent();
1569 void TextMetrics::cursorPrevious(Cursor & cur)
1571 pos_type cpos = cur.pos();
1572 pit_type cpar = cur.pit();
1574 int x = cur.x_target();
1575 setCursorFromCoordinates(cur, x, 0);
1576 cur.dispatch(FuncRequest(cur.selection()? LFUN_UP_SELECT: LFUN_UP));
1578 if (cpar == cur.pit() && cpos == cur.pos())
1579 // we have a row which is taller than the workarea. The
1580 // simplest solution is to move to the previous row instead.
1581 cur.dispatch(FuncRequest(cur.selection()? LFUN_UP_SELECT: LFUN_UP));
1584 cur.updateFlags(Update::Force | Update::FitCursor);
1588 void TextMetrics::cursorNext(Cursor & cur)
1590 pos_type cpos = cur.pos();
1591 pit_type cpar = cur.pit();
1593 int x = cur.x_target();
1594 setCursorFromCoordinates(cur, x, cur.bv().workHeight() - 1);
1595 cur.dispatch(FuncRequest(cur.selection()? LFUN_DOWN_SELECT: LFUN_DOWN));
1597 if (cpar == cur.pit() && cpos == cur.pos())
1598 // we have a row which is taller than the workarea. The
1599 // simplest solution is to move to the next row instead.
1601 FuncRequest(cur.selection()? LFUN_DOWN_SELECT: LFUN_DOWN));
1604 cur.updateFlags(Update::Force | Update::FitCursor);
1608 // the cursor set functions have a special mechanism. When they
1609 // realize you left an empty paragraph, they will delete it.
1611 bool TextMetrics::cursorHome(Cursor & cur)
1613 BOOST_ASSERT(text_ == cur.text());
1614 ParagraphMetrics const & pm = par_metrics_[cur.pit()];
1615 Row const & row = pm.getRow(cur.pos(),cur.boundary());
1616 return text_->setCursor(cur, cur.pit(), row.pos());
1620 bool TextMetrics::cursorEnd(Cursor & cur)
1622 BOOST_ASSERT(text_ == cur.text());
1623 // if not on the last row of the par, put the cursor before
1624 // the final space exept if I have a spanning inset or one string
1625 // is so long that we force a break.
1626 pos_type end = cur.textRow().endpos();
1628 // empty text, end-1 is no valid position
1630 bool boundary = false;
1631 if (end != cur.lastpos()) {
1632 if (!cur.paragraph().isLineSeparator(end-1)
1633 && !cur.paragraph().isNewline(end-1))
1638 return text_->setCursor(cur, cur.pit(), end, true, boundary);
1642 void TextMetrics::deleteLineForward(Cursor & cur)
1644 BOOST_ASSERT(text_ == cur.text());
1645 if (cur.lastpos() == 0) {
1646 // Paragraph is empty, so we just go to the right
1647 text_->cursorRight(cur);
1650 cur.selection() = true; // to avoid deletion
1653 // What is this test for ??? (JMarc)
1654 if (!cur.selection())
1655 text_->deleteWordForward(cur);
1657 cap::cutSelection(cur, true, false);
1658 checkBufferStructure(cur.buffer(), cur);
1663 bool TextMetrics::isLastRow(pit_type pit, Row const & row) const
1665 ParagraphList const & pars = text_->paragraphs();
1666 return row.endpos() >= pars[pit].size()
1667 && pit + 1 == pit_type(pars.size());
1671 bool TextMetrics::isFirstRow(pit_type pit, Row const & row) const
1673 return row.pos() == 0 && pit == 0;
1677 int TextMetrics::leftMargin(int max_width, pit_type pit) const
1679 BOOST_ASSERT(pit >= 0);
1680 BOOST_ASSERT(pit < int(text_->paragraphs().size()));
1681 return leftMargin(max_width, pit, text_->paragraphs()[pit].size());
1685 int TextMetrics::leftMargin(int max_width,
1686 pit_type const pit, pos_type const pos) const
1688 ParagraphList const & pars = text_->paragraphs();
1690 BOOST_ASSERT(pit >= 0);
1691 BOOST_ASSERT(pit < int(pars.size()));
1692 Paragraph const & par = pars[pit];
1693 BOOST_ASSERT(pos >= 0);
1694 BOOST_ASSERT(pos <= par.size());
1695 Buffer const & buffer = bv_->buffer();
1696 //lyxerr << "TextMetrics::leftMargin: pit: " << pit << " pos: " << pos << endl;
1697 TextClass const & tclass = buffer.params().getTextClass();
1698 LayoutPtr const & layout = par.layout();
1700 docstring parindent = layout->parindent;
1704 if (text_->isMainText(buffer))
1705 l_margin += changebarMargin();
1707 l_margin += theFontMetrics(buffer.params().getFont()).signedWidth(
1708 tclass.leftmargin());
1710 if (par.getDepth() != 0) {
1711 // find the next level paragraph
1712 pit_type newpar = outerHook(pit, pars);
1713 if (newpar != pit_type(pars.size())) {
1714 if (pars[newpar].layout()->isEnvironment()) {
1715 l_margin = leftMargin(max_width, newpar);
1717 if (par.layout() == tclass.defaultLayout()) {
1718 if (pars[newpar].params().noindent())
1721 parindent = pars[newpar].layout()->parindent;
1726 // This happens after sections in standard classes. The 1.3.x
1727 // code compared depths too, but it does not seem necessary
1729 if (par.layout() == tclass.defaultLayout()
1730 && pit > 0 && pars[pit - 1].layout()->nextnoindent)
1733 Font const labelfont = text_->getLabelFont(buffer, par);
1734 FontMetrics const & labelfont_metrics = theFontMetrics(labelfont);
1736 switch (layout->margintype) {
1737 case MARGIN_DYNAMIC:
1738 if (!layout->leftmargin.empty()) {
1739 l_margin += theFontMetrics(buffer.params().getFont()).signedWidth(
1740 layout->leftmargin);
1742 if (!par.getLabelstring().empty()) {
1743 l_margin += labelfont_metrics.signedWidth(layout->labelindent);
1744 l_margin += labelfont_metrics.width(par.getLabelstring());
1745 l_margin += labelfont_metrics.width(layout->labelsep);
1749 case MARGIN_MANUAL: {
1750 l_margin += labelfont_metrics.signedWidth(layout->labelindent);
1751 // The width of an empty par, even with manual label, should be 0
1752 if (!par.empty() && pos >= par.beginOfBody()) {
1753 if (!par.getLabelWidthString().empty()) {
1754 docstring labstr = par.getLabelWidthString();
1755 l_margin += labelfont_metrics.width(labstr);
1756 l_margin += labelfont_metrics.width(layout->labelsep);
1762 case MARGIN_STATIC: {
1763 l_margin += theFontMetrics(buffer.params().getFont()).
1764 signedWidth(layout->leftmargin) * 4 / (par.getDepth() + 4);
1768 case MARGIN_FIRST_DYNAMIC:
1769 if (layout->labeltype == LABEL_MANUAL) {
1770 if (pos >= par.beginOfBody()) {
1771 l_margin += labelfont_metrics.signedWidth(layout->leftmargin);
1773 l_margin += labelfont_metrics.signedWidth(layout->labelindent);
1776 // Special case to fix problems with
1778 || (layout->labeltype == LABEL_STATIC
1779 && layout->latextype == LATEX_ENVIRONMENT
1780 && !isFirstInSequence(pit, pars))) {
1781 l_margin += labelfont_metrics.signedWidth(layout->leftmargin);
1782 } else if (layout->labeltype != LABEL_TOP_ENVIRONMENT
1783 && layout->labeltype != LABEL_BIBLIO
1784 && layout->labeltype !=
1785 LABEL_CENTERED_TOP_ENVIRONMENT) {
1786 l_margin += labelfont_metrics.signedWidth(layout->labelindent);
1787 l_margin += labelfont_metrics.width(layout->labelsep);
1788 l_margin += labelfont_metrics.width(par.getLabelstring());
1792 case MARGIN_RIGHT_ADDRESS_BOX: {
1794 // ok, a terrible hack. The left margin depends on the widest
1795 // row in this paragraph.
1796 RowList::iterator rit = par.rows().begin();
1797 RowList::iterator end = par.rows().end();
1798 // FIXME: This is wrong.
1799 int minfill = max_width;
1800 for ( ; rit != end; ++rit)
1801 if (rit->fill() < minfill)
1802 minfill = rit->fill();
1803 l_margin += theFontMetrics(params.getFont()).signedWidth(layout->leftmargin);
1804 l_margin += minfill;
1806 // also wrong, but much shorter.
1807 l_margin += max_width / 2;
1812 if (!par.params().leftIndent().zero())
1813 l_margin += par.params().leftIndent().inPixels(max_width);
1817 if (par.params().align() == LYX_ALIGN_LAYOUT)
1818 align = layout->align;
1820 align = par.params().align();
1822 // set the correct parindent
1824 && (layout->labeltype == LABEL_NO_LABEL
1825 || layout->labeltype == LABEL_TOP_ENVIRONMENT
1826 || layout->labeltype == LABEL_CENTERED_TOP_ENVIRONMENT
1827 || (layout->labeltype == LABEL_STATIC
1828 && layout->latextype == LATEX_ENVIRONMENT
1829 && !isFirstInSequence(pit, pars)))
1830 && align == LYX_ALIGN_BLOCK
1831 && !par.params().noindent()
1832 // in some insets, paragraphs are never indented
1833 && !(par.inInset() && par.inInset()->neverIndent(buffer))
1834 // display style insets are always centered, omit indentation
1837 && par.getInset(pos)->display())
1838 && (par.layout() != tclass.defaultLayout()
1839 || buffer.params().paragraph_separation ==
1840 BufferParams::PARSEP_INDENT))
1842 l_margin += theFontMetrics(buffer.params().getFont()).signedWidth(
1850 int TextMetrics::singleWidth(pit_type pit, pos_type pos) const
1852 ParagraphMetrics const & pm = par_metrics_[pit];
1854 return pm.singleWidth(pos, getDisplayFont(pit, pos));
1858 // only used for inset right now. should also be used for main text
1859 void TextMetrics::draw(PainterInfo & pi, int x, int y) const
1861 if (par_metrics_.empty())
1867 ParMetricsCache::iterator it = par_metrics_.begin();
1868 ParMetricsCache::iterator const pm_end = par_metrics_.end();
1869 y -= it->second.ascent();
1870 for (; it != pm_end; ++it) {
1871 ParagraphMetrics const & pmi = it->second;
1873 pit_type const pit = it->first;
1874 // Save the paragraph position in the cache.
1875 it->second.setPosition(y);
1876 drawParagraph(pi, pit, x, y);
1882 void TextMetrics::drawParagraph(PainterInfo & pi, pit_type pit, int x, int y) const
1884 // lyxerr << " paintPar: pit: " << pit << " at y: " << y << endl;
1885 int const ww = bv_->workHeight();
1887 ParagraphMetrics const & pm = par_metrics_[pit];
1888 if (pm.rows().empty())
1891 RowList::const_iterator const rb = pm.rows().begin();
1892 RowList::const_iterator const re = pm.rows().end();
1897 for (RowList::const_iterator rit = rb; rit != re; ++rit) {
1900 bool const inside = (y + rit->descent() >= 0
1901 && y - rit->ascent() < ww);
1902 // it is not needed to draw on screen if we are not inside.
1903 pi.pain.setDrawingEnabled(inside);
1904 RowPainter rp(pi, *text_, pit, *rit, bidi, x, y);
1906 // Row signature; has row changed since last paint?
1907 bool row_has_changed = rit->changed();
1909 bool row_selection = rit->sel_beg != -1 && rit->sel_end != -1;
1911 if (!row_selection && !pi.full_repaint && !row_has_changed) {
1912 // Paint the only the insets if the text itself is
1914 rp.paintOnlyInsets();
1915 y += rit->descent();
1919 // Paint the row if a full repaint has been requested or it has
1921 // Clear background of this row
1922 // (if paragraph background was not cleared)
1923 if (row_selection || (!pi.full_repaint && row_has_changed)) {
1924 pi.pain.fillRectangle(x, y - rit->ascent(),
1925 width(), rit->height(),
1926 Color_color(Color::color(pi.background_color)));
1928 if (row_selection) {
1929 DocIterator beg = bv_->cursor().selectionBegin();
1930 DocIterator end = bv_->cursor().selectionEnd();
1932 beg.pos() = rit->sel_beg;
1933 if (pit == end.pit()) {
1934 end.pos() = rit->sel_end;
1936 end.pit() = pit + 1;
1939 drawSelection(pi, beg, end, x);
1942 // Instrumentation for testing row cache (see also
1944 if (lyxerr.debugging(Debug::PAINTING)) {
1945 if (text_->isMainText(bv_->buffer()))
1946 LYXERR(Debug::PAINTING) << "\n{" <<
1947 pi.full_repaint << row_has_changed << "}";
1949 LYXERR(Debug::PAINTING) << "[" <<
1950 pi.full_repaint << row_has_changed << "]";
1953 // Backup full_repaint status and force full repaint
1954 // for inner insets as the Row has been cleared out.
1955 bool tmp = pi.full_repaint;
1956 pi.full_repaint = true;
1959 rp.paintChangeBar();
1965 y += rit->descent();
1966 // Restore full_repaint status.
1967 pi.full_repaint = tmp;
1969 // Re-enable screen drawing for future use of the painter.
1970 pi.pain.setDrawingEnabled(true);
1972 //LYXERR(Debug::PAINTING) << "." << endl;
1976 // FIXME: only take care of one row!
1977 void TextMetrics::drawSelection(PainterInfo & pi,
1978 DocIterator const & beg, DocIterator const & end, int x) const
1980 ParagraphMetrics const & pm1 = parMetrics(beg.pit());
1981 ParagraphMetrics const & pm2 = parMetrics(end.pit());
1982 Row const & row1 = pm1.getRow(beg.pos(), beg.boundary());
1983 Row const & row2 = pm2.getRow(end.pos(), end.boundary());
1987 bool const clipAbove =
1988 (bv_funcs::status(bv_, beg) == bv_funcs::CUR_ABOVE);
1992 middleTop = bv_funcs::getPos(*bv_, beg, beg.boundary()).y_ + row1.descent();
1996 bool const clipBelow =
1997 (bv_funcs::status(bv_, end) == bv_funcs::CUR_BELOW);
1999 middleBottom = bv_->workHeight();
2001 middleBottom = bv_funcs::getPos(*bv_, end, end.boundary()).y_ - row2.ascent();
2003 // start and end in the same line?
2004 if (!(clipAbove || clipBelow) && &row1 == &row2)
2005 // then only draw this row's selection
2006 drawRowSelection(pi, x, row1, beg, end, false, false);
2010 DocIterator begRowEnd = beg;
2011 begRowEnd.pos() = row1.endpos();
2012 begRowEnd.boundary(true);
2014 // draw upper rectangle
2015 drawRowSelection(pi, x, row1, beg, begRowEnd, false, true);
2018 if (middleTop < middleBottom) {
2019 // draw middle rectangle
2020 pi.pain.fillRectangle(x, middleTop, width(), middleBottom - middleTop,
2026 DocIterator endRowBeg = end;
2027 endRowBeg.pos() = row2.pos();
2028 endRowBeg.boundary(false);
2030 // draw low rectangle
2031 drawRowSelection(pi, x, row2, endRowBeg, end, true, false);
2037 void TextMetrics::drawRowSelection(PainterInfo & pi, int x, Row const & row,
2038 DocIterator const & beg, DocIterator const & end,
2039 bool drawOnBegMargin, bool drawOnEndMargin) const
2041 Buffer & buffer = bv_->buffer();
2042 DocIterator cur = beg;
2043 int x1 = cursorX(beg.top(), beg.boundary());
2044 int x2 = cursorX(end.top(), end.boundary());
2045 int y1 = bv_funcs::getPos(*bv_, cur, cur.boundary()).y_ - row.ascent();
2046 int y2 = y1 + row.height();
2049 if (drawOnBegMargin) {
2050 if (text_->isRTL(buffer, beg.paragraph()))
2051 pi.pain.fillRectangle(x + x1, y1, width() - x1, y2 - y1, Color::selection);
2053 pi.pain.fillRectangle(x, y1, x1, y2 - y1, Color::selection);
2056 if (drawOnEndMargin) {
2057 if (text_->isRTL(buffer, beg.paragraph()))
2058 pi.pain.fillRectangle(x, y1, x2, y2 - y1, Color::selection);
2060 pi.pain.fillRectangle(x + x2, y1, width() - x2, y2 - y1, Color::selection);
2063 // if we are on a boundary from the beginning, it's probably
2064 // a RTL boundary and we jump to the other side directly as this
2065 // segement is 0-size and confuses the logic below
2067 cur.boundary(false);
2069 // go through row and draw from RTL boundary to RTL boundary
2071 bool drawNow = false;
2073 // simplified cursorRight code below which does not
2074 // descend into insets and which does not go into the
2075 // next line. Compare the logic with the original cursorRight
2077 // if left of boundary -> just jump to right side
2078 // but for RTL boundaries don't, because: abc|DDEEFFghi -> abcDDEEF|Fghi
2079 if (cur.boundary()) {
2080 cur.boundary(false);
2081 } else if (isRTLBoundary(cur.pit(), cur.pos() + 1)) {
2082 // in front of RTL boundary -> Stay on this side of the boundary because:
2083 // ab|cDDEEFFghi -> abc|DDEEFFghi
2092 if (cur.pos() == row.endpos())
2097 // the previous segment was just drawn, now the next starts
2098 x1 = cursorX(cur.top(), cur.boundary());
2101 if (!(cur < end) || drawNow) {
2102 x2 = cursorX(cur.top(), cur.boundary());
2103 pi.pain.fillRectangle(x + min(x1,x2), y1, abs(x2 - x1), y2 - y1,
2106 // reset x1, so it is set again next round (which will be on the
2107 // right side of a boundary or at the selection end)
2113 //int TextMetrics::pos2x(pit_type pit, pos_type pos) const
2115 // ParagraphMetrics const & pm = par_metrics_[pit];
2116 // Row const & r = pm.rows()[row];
2122 int defaultRowHeight()
2124 return int(theFontMetrics(Font(Font::ALL_SANE)).maxHeight() * 1.2);