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 "CoordCache.h"
28 #include "CutAndPaste.h"
30 #include "InsetList.h"
34 #include "MetricsInfo.h"
35 #include "ParagraphParameters.h"
36 #include "RowPainter.h"
38 #include "TextClass.h"
41 #include "insets/InsetText.h"
43 #include "mathed/MathMacroTemplate.h"
45 #include "frontends/FontMetrics.h"
46 #include "frontends/Painter.h"
48 #include "support/debug.h"
49 #include "support/lassert.h"
58 using frontend::FontMetrics;
63 int numberOfLabelHfills(Paragraph const & par, Row const & row)
65 pos_type last = row.endpos() - 1;
66 pos_type first = row.pos();
68 // hfill *DO* count at the beginning of paragraphs!
70 while (first < last && par.isHfill(first))
74 last = min(last, par.beginOfBody());
76 for (pos_type p = first; p < last; ++p) {
83 // FIXME: this needs to be rewritten, probably by merging it into some
84 // code that, besides counting, sets the active status of the space
85 // inset in the row element.
86 int numberOfHfills(Row const & row, ParagraphMetrics const & pm,
87 pos_type const body_pos)
90 Row::const_iterator cit = row.begin();
91 Row::const_iterator const end = row.end();
92 for ( ; cit != end ; ++cit)
93 if (cit->pos >= body_pos
94 && cit->inset && pm.hfillExpansion(row, cit->pos))
102 /////////////////////////////////////////////////////////////////////
106 /////////////////////////////////////////////////////////////////////
109 TextMetrics::TextMetrics(BufferView * bv, Text * text)
110 : bv_(bv), text_(text)
113 max_width_ = bv_->workWidth();
114 dim_.wid = max_width_;
120 bool TextMetrics::contains(pit_type pit) const
122 return par_metrics_.find(pit) != par_metrics_.end();
126 ParagraphMetrics const & TextMetrics::parMetrics(pit_type pit) const
128 return const_cast<TextMetrics *>(this)->parMetrics(pit, true);
133 pair<pit_type, ParagraphMetrics const *> TextMetrics::first() const
135 ParMetricsCache::const_iterator it = par_metrics_.begin();
136 return make_pair(it->first, &it->second);
140 pair<pit_type, ParagraphMetrics const *> TextMetrics::last() const
142 LBUFERR(!par_metrics_.empty());
143 ParMetricsCache::const_reverse_iterator it = par_metrics_.rbegin();
144 return make_pair(it->first, &it->second);
148 ParagraphMetrics & TextMetrics::parMetrics(pit_type pit, bool redo)
150 ParMetricsCache::iterator pmc_it = par_metrics_.find(pit);
151 if (pmc_it == par_metrics_.end()) {
152 pmc_it = par_metrics_.insert(
153 make_pair(pit, ParagraphMetrics(text_->getPar(pit)))).first;
155 if (pmc_it->second.rows().empty() && redo)
157 return pmc_it->second;
161 bool TextMetrics::metrics(MetricsInfo & mi, Dimension & dim, int min_width)
163 LBUFERR(mi.base.textwidth > 0);
164 max_width_ = mi.base.textwidth;
165 // backup old dimension.
166 Dimension const old_dim = dim_;
169 dim_.wid = min_width;
170 pit_type const npar = text_->paragraphs().size();
172 // If there is more than one row, expand the text to
173 // the full allowable width.
174 dim_.wid = max_width_;
176 //lyxerr << "TextMetrics::metrics: width: " << mi.base.textwidth
177 // << " maxWidth: " << max_width_ << "\nfont: " << mi.base.font << endl;
179 bool changed = false;
181 for (pit_type pit = 0; pit != npar; ++pit) {
182 changed |= redoParagraph(pit);
183 ParagraphMetrics const & pm = par_metrics_[pit];
185 if (dim_.wid < pm.width())
186 dim_.wid = pm.width();
189 dim_.asc = par_metrics_[0].ascent();
190 dim_.des = h - dim_.asc;
191 //lyxerr << "dim_.wid " << dim_.wid << endl;
192 //lyxerr << "dim_.asc " << dim_.asc << endl;
193 //lyxerr << "dim_.des " << dim_.des << endl;
195 changed |= dim_ != old_dim;
201 int TextMetrics::rightMargin(ParagraphMetrics const & pm) const
203 return text_->isMainText() ? pm.rightMargin(*bv_) : 0;
207 int TextMetrics::rightMargin(pit_type const pit) const
209 return text_->isMainText() ? par_metrics_[pit].rightMargin(*bv_) : 0;
213 void TextMetrics::applyOuterFont(Font & font) const
215 FontInfo lf(font_.fontInfo());
216 lf.reduce(bv_->buffer().params().getFont().fontInfo());
217 font.fontInfo().realize(lf);
221 Font TextMetrics::displayFont(pit_type pit, pos_type pos) const
223 LASSERT(pos >= 0, { static Font f; return f; });
225 ParagraphList const & pars = text_->paragraphs();
226 Paragraph const & par = pars[pit];
227 Layout const & layout = par.layout();
228 Buffer const & buffer = bv_->buffer();
230 BufferParams const & params = buffer.params();
231 pos_type const body_pos = par.beginOfBody();
233 // We specialize the 95% common case:
234 if (!par.getDepth()) {
235 Font f = par.getFontSettings(params, pos);
236 if (!text_->isMainText())
238 bool lab = layout.labeltype == LABEL_MANUAL && pos < body_pos;
240 FontInfo const & lf = lab ? layout.labelfont : layout.font;
241 FontInfo rlf = lab ? layout.reslabelfont : layout.resfont;
243 // In case the default family has been customized
244 if (lf.family() == INHERIT_FAMILY)
245 rlf.setFamily(params.getFont().fontInfo().family());
246 f.fontInfo().realize(rlf);
250 // The uncommon case need not be optimized as much
251 FontInfo const & layoutfont = pos < body_pos ?
252 layout.labelfont : layout.font;
254 Font font = par.getFontSettings(params, pos);
255 font.fontInfo().realize(layoutfont);
257 if (!text_->isMainText())
258 applyOuterFont(font);
260 // Realize against environment font information
261 // NOTE: the cast to pit_type should be removed when pit_type
262 // changes to a unsigned integer.
263 if (pit < pit_type(pars.size()))
264 font.fontInfo().realize(text_->outerFont(pit).fontInfo());
266 // Realize with the fonts of lesser depth.
267 font.fontInfo().realize(params.getFont().fontInfo());
273 bool TextMetrics::isRTL(CursorSlice const & sl, bool boundary) const
279 if (boundary && sl.pos() > 0)
282 return displayFont(sl.pit(), sl.pos() + correction).isVisibleRightToLeft();
286 bool TextMetrics::isRTLBoundary(pit_type pit, pos_type pos) const
288 // no RTL boundary at paragraph start
292 Font const & left_font = displayFont(pit, pos - 1);
294 return isRTLBoundary(pit, pos, left_font);
298 // isRTLBoundary returns false on a real end-of-line boundary,
299 // because otherwise the two boundary types get mixed up.
300 // This is the whole purpose of this being in TextMetrics.
301 bool TextMetrics::isRTLBoundary(pit_type pit, pos_type pos,
302 Font const & font) const
304 if (// no RTL boundary at paragraph start
306 // if the metrics have not been calculated, then we are not
307 // on screen and can safely ignore issues about boundaries.
311 ParagraphMetrics & pm = par_metrics_[pit];
312 // no RTL boundary in empty paragraph
313 if (pm.rows().empty())
316 pos_type endpos = pm.getRow(pos - 1, false).endpos();
317 pos_type startpos = pm.getRow(pos, false).pos();
318 // no RTL boundary at line start:
319 // abc\n -> toggle to RTL -> abc\n (and not: abc\n|
321 if (pos == startpos && pos == endpos) // start of cur row, end of prev row
324 Paragraph const & par = text_->getPar(pit);
325 // no RTL boundary at line break:
326 // abc|\n -> move right -> abc\n (and not: abc\n|
328 if (startpos == pos && endpos == pos && endpos != par.size()
329 && (par.isNewline(pos - 1)
330 || par.isEnvSeparator(pos - 1)
331 || par.isLineSeparator(pos - 1)
332 || par.isSeparator(pos - 1)))
335 bool left = font.isVisibleRightToLeft();
337 if (pos == par.size())
338 right = par.isRTL(bv_->buffer().params());
340 right = displayFont(pit, pos).isVisibleRightToLeft();
342 return left != right;
346 bool TextMetrics::redoParagraph(pit_type const pit)
348 Paragraph & par = text_->getPar(pit);
349 // IMPORTANT NOTE: We pass 'false' explicitly in order to not call
350 // redoParagraph() recursively inside parMetrics.
351 Dimension old_dim = parMetrics(pit, false).dim();
352 ParagraphMetrics & pm = par_metrics_[pit];
355 Buffer & buffer = bv_->buffer();
356 bool changed = false;
358 // Check whether there are InsetBibItems that need fixing
359 // FIXME: This check ought to be done somewhere else. It is the reason
360 // why text_ is not const. But then, where else to do it?
361 // Well, how can you end up with either (a) a biblio environment that
362 // has no InsetBibitem or (b) a biblio environment with more than one
363 // InsetBibitem? I think the answer is: when paragraphs are merged;
364 // when layout is set; when material is pasted.
365 if (par.brokenBiblio()) {
366 Cursor & cur = const_cast<Cursor &>(bv_->cursor());
367 // In some cases, we do not know how to record undo
368 if (&cur.inset() == &text_->inset())
369 cur.recordUndo(pit, pit);
371 int const moveCursor = par.fixBiblio(buffer);
373 // Is it necessary to update the cursor?
374 if (&cur.inset() == &text_->inset() && cur.pit() == pit) {
377 else if (moveCursor < 0 && cur.pos() >= -moveCursor)
382 // Optimisation: this is used in the next two loops
383 // so better to calculate that once here.
384 int const right_margin = rightMargin(pm);
386 // iterator pointing to paragraph to resolve macros
387 DocIterator parPos = text_->macrocontextPosition();
391 LYXERR(Debug::INFO, "MacroContext not initialised!"
392 << " Going through the buffer again and hope"
393 << " the context is better then.");
394 // FIXME audit updateBuffer calls
395 // This should not be here, but it is not clear yet where else it
397 bv_->buffer().updateBuffer();
398 parPos = text_->macrocontextPosition();
399 LBUFERR(!parPos.empty());
404 Font const bufferfont = buffer.params().getFont();
405 CoordCache::Insets & insetCache = bv_->coordCache().insets();
406 InsetList::const_iterator ii = par.insetList().begin();
407 InsetList::const_iterator iend = par.insetList().end();
408 for (; ii != iend; ++ii) {
409 // FIXME Doesn't this HAVE to be non-empty?
410 // position already initialized?
411 if (!parPos.empty()) {
412 parPos.pos() = ii->pos;
414 // A macro template would normally not be visible
415 // by itself. But the tex macro semantics allow
416 // recursion, so we artifically take the context
417 // after the macro template to simulate this.
418 if (ii->inset->lyxCode() == MATHMACRO_CODE)
422 // do the metric calculation
424 int const w = max_width_ - leftMargin(max_width_, pit, ii->pos)
426 Font const & font = ii->inset->inheritFont() ?
427 displayFont(pit, ii->pos) : bufferfont;
428 MacroContext mc(&buffer, parPos);
429 MetricsInfo mi(bv_, font.fontInfo(), w, mc);
430 ii->inset->metrics(mi, dim);
431 if (!insetCache.has(ii->inset) || insetCache.dim(ii->inset) != dim) {
432 insetCache.add(ii->inset, dim);
437 par.setBeginOfBody();
439 size_t row_index = 0;
440 bool need_new_row = false;
441 // maximum pixel width of a row
443 if (row_index == pm.rows().size())
444 pm.rows().push_back(Row());
445 Row & row = pm.rows()[row_index];
449 need_new_row = breakRow(row, right_margin);
451 row.setChanged(false);
452 if (row_index || row.endpos() < par.size()
453 || (row.right_boundary() && par.inInset().lyxCode() != CELL_CODE)) {
454 /* If there is more than one row or the row has been
455 * broken by a display inset or a newline, expand the text
456 * to the full allowable width. This setting here is
457 * needed for the computeRowMetrics() below. In the case
458 * of a display inset, we do nothing when inside a table
459 * cell, because the tabular code is not prepared for
460 * that, and it triggers when using a caption in a
461 * longtable (see bugs #9945 and #9757).
463 if (dim_.wid < max_width_)
464 dim_.wid = max_width_;
466 int const max_row_width = max(dim_.wid, row.width());
467 computeRowMetrics(row, max_row_width);
468 first = row.endpos();
471 pm.dim().wid = max(pm.dim().wid, row.width());
472 pm.dim().des += row.height();
473 } while (first < par.size() || need_new_row);
475 // FIXME: It might be better to move this in another method
476 // specially tailored for the main text.
477 // Top and bottom margin of the document (only at top-level)
478 if (text_->isMainText()) {
480 pm.rows().front().dimension().asc += 20;
483 ParagraphList const & pars = text_->paragraphs();
484 if (pit + 1 == pit_type(pars.size())) {
485 pm.rows().back().dimension().des += 20;
490 if (row_index < pm.rows().size())
491 pm.rows().resize(row_index);
493 pm.dim().asc += pm.rows()[0].ascent();
494 pm.dim().des -= pm.rows()[0].ascent();
496 changed |= old_dim.height() != pm.dim().height();
502 LyXAlignment TextMetrics::getAlign(Paragraph const & par, Row const & row) const
504 Layout const & layout = par.layout();
507 if (par.params().align() == LYX_ALIGN_LAYOUT)
508 align = layout.align;
510 align = par.params().align();
512 // handle alignment inside tabular cells
513 Inset const & owner = text_->inset();
514 bool forced_block = false;
515 switch (owner.contentAlignment()) {
516 case LYX_ALIGN_BLOCK:
517 // In general block align is the default state, but here it is
518 // an explicit choice. Therefore it should not be overridden
522 case LYX_ALIGN_CENTER:
524 case LYX_ALIGN_RIGHT:
525 if (align == LYX_ALIGN_NONE || align == LYX_ALIGN_BLOCK)
526 align = owner.contentAlignment();
529 // unchanged (use align)
533 // Display-style insets should always be on a centered row
534 if (Inset const * inset = par.getInset(row.pos())) {
535 switch (inset->display()) {
536 case Inset::AlignLeft:
537 align = LYX_ALIGN_BLOCK;
539 case Inset::AlignCenter:
540 align = LYX_ALIGN_CENTER;
543 // unchanged (use align)
545 case Inset::AlignRight:
546 align = LYX_ALIGN_RIGHT;
551 if (align == LYX_ALIGN_BLOCK) {
552 // If this row has been broken abruptly by a display inset, or
553 // it is the end of the paragraph, or the user requested we
554 // not justify stuff, then don't stretch.
555 // A forced block alignment can only be overridden the 'no
556 // justification on screen' setting.
557 if (((row.right_boundary() || row.endpos() == par.size())
559 || !bv_->buffer().params().justification)
560 align = text_->isRTL(par) ? LYX_ALIGN_RIGHT : LYX_ALIGN_LEFT;
567 void TextMetrics::computeRowMetrics(Row & row, int width) const
572 Paragraph const & par = text_->getPar(row.pit());
574 int const w = width - row.right_margin - row.width();
575 // FIXME: put back this assertion when the crash on new doc is solved.
576 //LASSERT(w >= 0, /**/);
578 // is there a manual margin with a manual label
579 Layout const & layout = par.layout();
582 if (layout.margintype == MARGIN_MANUAL
583 && layout.labeltype == LABEL_MANUAL) {
584 /// We might have real hfills in the label part
585 nlh = numberOfLabelHfills(par, row);
587 // A manual label par (e.g. List) has an auto-hfill
588 // between the label text and the body of the
590 // But we don't want to do this auto hfill if the par
595 if (nlh && !par.getLabelWidthString().empty())
596 row.label_hfill = labelFill(row) / double(nlh);
599 // are there any hfills in the row?
600 ParagraphMetrics & pm = par_metrics_[row.pit()];
601 int nh = numberOfHfills(row, pm, par.beginOfBody());
605 // We don't have to look at the alignment if the row is already
606 // larger then the permitted width as then we force the
607 // LEFT_ALIGN'edness!
608 if (int(row.width()) >= max_width_)
612 // Common case : there is no hfill, and the alignment will be
614 switch (getAlign(par, row)) {
615 case LYX_ALIGN_BLOCK: {
616 int const ns = row.countSeparators();
617 // If we have separators, then stretch the row
619 row.setSeparatorExtraWidth(double(w) / ns);
620 row.dimension().wid += w;
621 } else if (text_->isRTL(par)) {
622 row.left_margin += w;
623 row.dimension().wid += w;
627 case LYX_ALIGN_RIGHT:
628 row.left_margin += w;
629 row.dimension().wid += w;
631 case LYX_ALIGN_CENTER:
632 row.dimension().wid += w / 2;
633 row.left_margin += w / 2;
637 case LYX_ALIGN_LAYOUT:
638 case LYX_ALIGN_SPECIAL:
639 case LYX_ALIGN_DECIMAL:
647 row.dimension().wid += w;
648 // Set size of hfill insets
649 pos_type const endpos = row.endpos();
650 pos_type body_pos = par.beginOfBody();
652 && (body_pos > endpos || !par.isLineSeparator(body_pos - 1)))
655 CoordCache::Insets & insetCache = bv_->coordCache().insets();
656 Row::iterator cit = row.begin();
657 Row::iterator const cend = row.end();
658 for ( ; cit != cend; ++cit) {
659 if (row.label_hfill && cit->endpos == body_pos
660 && cit->type == Row::SPACE)
661 cit->dim.wid -= int(row.label_hfill * (nlh - 1));
662 if (cit->inset && pm.hfillExpansion(row, cit->pos)) {
663 if (cit->pos >= body_pos) {
664 cit->dim.wid += hfill;
667 cit->dim.wid += hfill_rem;
669 cit->dim.wid += int(row.label_hfill);
670 // Cache the inset dimension.
671 insetCache.add(cit->inset, cit->dim);
677 int TextMetrics::labelFill(Row const & row) const
679 Paragraph const & par = text_->getPar(row.pit());
680 LBUFERR(par.beginOfBody() > 0 || par.isEnvSeparator(0));
683 Row::const_iterator cit = row.begin();
684 Row::const_iterator const end = row.end();
685 // iterate over elements before main body (except the last one,
686 // which is extra space).
687 while (cit!= end && cit->endpos < par.beginOfBody()) {
692 docstring const & label = par.params().labelWidthString();
696 FontMetrics const & fm
697 = theFontMetrics(text_->labelFont(par));
699 return max(0, fm.width(label) - w);
704 // Not used, see TextMetrics::breakRow
705 // this needs special handling - only newlines count as a break point
706 static pos_type addressBreakPoint(pos_type i, Paragraph const & par)
708 pos_type const end = par.size();
711 if (par.isNewline(i))
719 int TextMetrics::labelEnd(pit_type const pit) const
721 // labelEnd is only needed if the layout fills a flushleft label.
722 if (text_->getPar(pit).layout().margintype != MARGIN_MANUAL)
724 // return the beginning of the body
725 return leftMargin(max_width_, pit);
731 * Calling Text::getFont is slow. While rebreaking we scan a
732 * paragraph from left to right calling getFont for every char. This
733 * simple class address this problem by hidding an optimization trick
734 * (not mine btw -AB): the font is reused in the whole font span. The
735 * class handles transparently the "hidden" (not part of the fontlist)
736 * label font (as getFont does).
742 FontIterator(TextMetrics const & tm,
743 Paragraph const & par, pit_type pit, pos_type pos)
744 : tm_(tm), par_(par), pit_(pit), pos_(pos),
745 font_(tm.displayFont(pit, pos)),
746 endspan_(par.fontSpan(pos).last),
747 bodypos_(par.beginOfBody())
751 Font const & operator*() const { return font_; }
754 FontIterator & operator++()
757 if (pos_ < par_.size() && (pos_ > endspan_ || pos_ == bodypos_)) {
758 font_ = tm_.displayFont(pit_, pos_);
759 endspan_ = par_.fontSpan(pos_).last;
765 Font * operator->() { return &font_; }
769 TextMetrics const & tm_;
771 Paragraph const & par_;
786 /** This is the function where the hard work is done. The code here is
787 * very sensitive to small changes :) Note that part of the
788 * intelligence is also in Row::shortenIfNeeded.
790 bool TextMetrics::breakRow(Row & row, int const right_margin) const
792 Paragraph const & par = text_->getPar(row.pit());
793 pos_type const end = par.size();
794 pos_type const pos = row.pos();
795 pos_type const body_pos = par.beginOfBody();
796 bool const is_rtl = text_->isRTL(par);
797 bool need_new_row = false;
800 row.left_margin = leftMargin(max_width_, row.pit(), pos);
801 row.right_margin = right_margin;
803 swap(row.left_margin, row.right_margin);
804 // Remember that the row width takes into account the left_margin
805 // but not the right_margin.
806 row.dimension().wid = row.left_margin;
807 // the width available for the row.
808 int const width = max_width_ - row.right_margin;
810 if (pos >= end || row.width() > width) {
816 //FIXME: As long as leftMargin() is not correctly implemented for
817 // MARGIN_RIGHT_ADDRESS_BOX, we should also not do this here.
818 // Otherwise, long rows will be painted off the screen.
819 if (par.layout().margintype == MARGIN_RIGHT_ADDRESS_BOX)
820 return addressBreakPoint(pos, par);
823 // check for possible inline completion
824 DocIterator const & ic_it = bv_->inlineCompletionPos();
825 pos_type ic_pos = -1;
826 if (ic_it.inTexted() && ic_it.text() == text_ && ic_it.pit() == row.pit())
827 ic_pos = ic_it.pos();
829 // Now we iterate through until we reach the right margin
830 // or the end of the par, then build a representation of the row.
832 FontIterator fi = FontIterator(*this, par, row.pit(), pos);
834 // this can happen for an empty row after a newline
837 char_type c = par.getChar(i);
838 // The most special cases are handled first.
839 if (par.isInset(i)) {
840 Inset const * ins = par.getInset(i);
841 Dimension dim = bv_->coordCache().insets().dim(ins);
842 row.add(i, ins, dim, *fi, par.lookupChange(i));
843 } else if (c == ' ' && i + 1 == body_pos) {
844 // There is a space at i, but it should not be
845 // added as a separator, because it is just
846 // before body_pos. Instead, insert some spacing to
848 FontMetrics const & fm = theFontMetrics(text_->labelFont(par));
849 // this is needed to make sure that the row width is correct
851 int const add = max(fm.width(par.layout().labelsep),
852 labelEnd(row.pit()) - row.width());
853 row.addSpace(i, add, *fi, par.lookupChange(i));
854 } else if (c == '\t')
855 row.addSpace(i, theFontMetrics(*fi).width(from_ascii(" ")),
856 *fi, par.lookupChange(i));
858 // FIXME: please someone fix the Hebrew/Arabic parenthesis mess!
859 // see also Paragraph::getUChar.
860 if (fi->language()->lang() == "hebrew") {
866 row.add(i, c, *fi, par.lookupChange(i));
869 // add inline completion width
870 // draw logically behind the previous character
871 if (ic_pos == i + 1 && !bv_->inlineCompletion().empty()) {
872 docstring const comp = bv_->inlineCompletion();
873 size_t const uniqueTo =bv_->inlineCompletionUniqueChars();
877 f.fontInfo().setColor(Color_inlinecompletion);
878 row.addVirtual(i + 1, comp.substr(0, uniqueTo), f, Change());
880 f.fontInfo().setColor(Color_nonunique_inlinecompletion);
881 row.addVirtual(i + 1, comp.substr(uniqueTo), f, Change());
884 // Handle some situations that abruptly terminate the row
886 // - Before a display inset
887 // - After a display inset
888 Inset const * inset = 0;
889 if (par.isNewline(i) || par.isEnvSeparator(i)
890 || (i + 1 < end && (inset = par.getInset(i + 1))
892 || (!row.empty() && row.back().inset
893 && row.back().inset->display())) {
894 row.right_boundary(true);
895 need_new_row = par.isNewline(i);
902 } while (i < end && row.width() <= width);
906 // End of paragraph marker
907 ParagraphList const & pars = text_->paragraphs();
908 if (lyxrc.paragraph_markers && !need_new_row
909 && i == end && size_type(row.pit() + 1) < pars.size()) {
910 // add a virtual element for the end-of-paragraph
911 // marker; it is shown on screen, but does not exist
913 Font f(text_->layoutFont(row.pit()));
914 f.fontInfo().setColor(Color_paragraphmarker);
915 BufferParams const & bparams
916 = text_->inset().buffer().params();
917 f.setLanguage(par.getParLanguage(bparams));
918 row.addVirtual(end, docstring(1, char_type(0x00B6)), f, Change());
921 // if the row is too large, try to cut at last separator. In case
922 // of success, reset indication that the row was broken abruptly.
923 if (row.shortenIfNeeded(body_pos, width))
924 row.right_boundary(false);
926 // make sure that the RTL elements are in reverse ordering
927 row.reverseRTL(is_rtl);
928 //LYXERR0("breakrow: row is " << row);
934 void TextMetrics::setRowHeight(Row & row, bool topBottomSpace) const
936 Paragraph const & par = text_->getPar(row.pit());
937 Layout const & layout = par.layout();
938 double const spacing_val = layout.spacing.getValue()
939 * text_->spacing(par);
941 // Initial value for ascent (useful if row is empty).
942 Font const font = displayFont(row.pit(), row.pos());
943 FontMetrics const & fm = theFontMetrics(font);
944 int maxasc = int(fm.maxAscent() * spacing_val);
945 int maxdes = int(fm.maxDescent() * spacing_val);
947 // Find the ascent/descent of the row contents
948 Row::const_iterator cit = row.begin();
949 Row::const_iterator cend = row.end();
950 for ( ; cit != cend; ++cit) {
952 maxasc = max(maxasc, cit->dim.ascent());
953 maxdes = max(maxdes, cit->dim.descent());
955 FontMetrics const & fm = theFontMetrics(cit->font);
956 maxasc = max(maxasc, int(fm.maxAscent() * spacing_val));
957 maxdes = max(maxdes, int(fm.maxDescent() * spacing_val));
961 // This is nicer with box insets
965 // Now use the layout information.
966 double layoutasc = 0;
967 double layoutdesc = 0;
969 ParagraphList const & pars = text_->paragraphs();
970 Inset const & inset = text_->inset();
971 double const dh = defaultRowHeight();
974 if (row.pos() == 0 && topBottomSpace) {
975 BufferParams const & bufparams = bv_->buffer().params();
976 // some parskips VERY EASY IMPLEMENTATION
977 if (bufparams.paragraph_separation == BufferParams::ParagraphSkipSeparation
978 && !inset.getLayout().parbreakIsNewline()
979 && !par.layout().parbreak_is_newline
981 && ((layout.isParagraph() && par.getDepth() == 0)
982 || (pars[row.pit() - 1].layout().isParagraph()
983 && pars[row.pit() - 1].getDepth() == 0))) {
984 maxasc += bufparams.getDefSkip().inPixels(*bv_);
987 if (par.params().startOfAppendix())
988 maxasc += int(3 * dh);
990 // special code for the top label
991 if (layout.labelIsAbove()
992 && (!layout.isParagraphGroup() || text_->isFirstInSequence(row.pit()))
993 && !par.labelString().empty()) {
994 FontInfo labelfont = text_->labelFont(par);
995 FontMetrics const & lfm = theFontMetrics(labelfont);
998 * layout.spacing.getValue()
999 * text_->spacing(par)
1000 + (layout.topsep + layout.labelbottomsep) * dh);
1003 // Add the layout spaces, for example before and after
1004 // a section, or between the items of a itemize or enumerate
1007 pit_type prev = text_->depthHook(row.pit(), par.getDepth());
1008 Paragraph const & prevpar = pars[prev];
1009 if (prev != row.pit()
1010 && prevpar.layout() == layout
1011 && prevpar.getDepth() == par.getDepth()
1012 && prevpar.getLabelWidthString()
1013 == par.getLabelWidthString()) {
1014 layoutasc = layout.itemsep * dh;
1015 } else if (row.pit() != 0 || row.pos() != 0) {
1016 if (layout.topsep > 0)
1017 layoutasc = layout.topsep * dh;
1020 prev = text_->outerHook(row.pit());
1021 if (prev != pit_type(pars.size())) {
1022 maxasc += int(pars[prev].layout().parsep * dh);
1023 } else if (row.pit() != 0) {
1024 Paragraph const & prevpar = pars[row.pit() - 1];
1025 if (prevpar.getDepth() != 0 ||
1026 prevpar.layout() == layout) {
1027 maxasc += int(layout.parsep * dh);
1032 // is it a bottom line?
1033 if (row.endpos() >= par.size() && topBottomSpace) {
1034 // add the layout spaces, for example before and after
1035 // a section, or between the items of a itemize or enumerate
1037 pit_type nextpit = row.pit() + 1;
1038 if (nextpit != pit_type(pars.size())) {
1039 pit_type cpit = row.pit();
1041 if (pars[cpit].getDepth() > pars[nextpit].getDepth()) {
1042 double usual = pars[cpit].layout().bottomsep * dh;
1044 cpit = text_->depthHook(cpit, pars[nextpit].getDepth());
1045 if (pars[cpit].layout() != pars[nextpit].layout()
1046 || pars[nextpit].getLabelWidthString() != pars[cpit].getLabelWidthString())
1047 unusual = pars[cpit].layout().bottomsep * dh;
1048 layoutdesc = max(unusual, usual);
1049 } else if (pars[cpit].getDepth() == pars[nextpit].getDepth()) {
1050 if (pars[cpit].layout() != pars[nextpit].layout()
1051 || pars[nextpit].getLabelWidthString() != pars[cpit].getLabelWidthString())
1052 layoutdesc = int(pars[cpit].layout().bottomsep * dh);
1057 // incalculate the layout spaces
1058 maxasc += int(layoutasc * 2 / (2 + pars[row.pit()].getDepth()));
1059 maxdes += int(layoutdesc * 2 / (2 + pars[row.pit()].getDepth()));
1061 row.dimension().asc = maxasc + labeladdon;
1062 row.dimension().des = maxdes;
1066 // x is an absolute screen coord
1067 // returns the column near the specified x-coordinate of the row
1068 // x is set to the real beginning of this column
1069 pos_type TextMetrics::getPosNearX(Row const & row, int & x,
1070 bool & boundary) const
1072 //LYXERR0("getPosNearX(" << x << ") row=" << row);
1073 /// For the main Text, it is possible that this pit is not
1074 /// yet in the CoordCache when moving cursor up.
1075 /// x Paragraph coordinate is always 0 for main text anyway.
1076 int const xo = origin_.x_;
1079 // Adapt to cursor row scroll offset if applicable.
1080 int const offset = bv_->horizScrollOffset(text_, row.pit(), row.pos());
1083 pos_type pos = row.pos();
1086 x = row.left_margin;
1087 else if (x <= row.left_margin) {
1088 pos = row.front().left_pos();
1089 x = row.left_margin;
1090 } else if (x >= row.width()) {
1091 pos = row.back().right_pos();
1094 double w = row.left_margin;
1095 Row::const_iterator cit = row.begin();
1096 Row::const_iterator cend = row.end();
1097 for ( ; cit != cend; ++cit) {
1098 if (w <= x && w + cit->full_width() > x) {
1099 int x_offset = int(x - w);
1100 pos = cit->x2pos(x_offset);
1101 x = int(x_offset + w);
1104 w += cit->full_width();
1106 if (cit == row.end()) {
1107 pos = row.back().right_pos();
1110 /** This tests for the case where the cursor is placed
1111 * just before a font direction change. See comment on
1112 * the boundary_ member in DocIterator.h to understand
1113 * how boundary helps here.
1115 else if (pos == cit->endpos
1116 && cit + 1 != row.end()
1117 && cit->isRTL() != (cit + 1)->isRTL())
1121 /** This tests for the case where the cursor is set at the end
1122 * of a row which has been broken due something else than a
1123 * separator (a display inset or a forced breaking of the
1124 * row). We know that there is a separator when the end of the
1125 * row is larger than the end of its last element.
1127 if (!row.empty() && pos == row.back().endpos
1128 && row.back().endpos == row.endpos()) {
1129 Inset const * inset = row.back().inset;
1130 if (inset && (inset->lyxCode() == NEWLINE_CODE
1131 || inset->lyxCode() == SEPARATOR_CODE))
1132 pos = row.back().pos;
1134 boundary = row.right_boundary();
1138 //LYXERR0("getPosNearX ==> pos=" << pos << ", boundary=" << boundary);
1144 pos_type TextMetrics::x2pos(pit_type pit, int row, int x) const
1146 // We play safe and use parMetrics(pit) to make sure the
1147 // ParagraphMetrics will be redone and OK to use if needed.
1148 // Otherwise we would use an empty ParagraphMetrics in
1149 // upDownInText() while in selection mode.
1150 ParagraphMetrics const & pm = parMetrics(pit);
1152 LBUFERR(row < int(pm.rows().size()));
1154 Row const & r = pm.rows()[row];
1155 return getPosNearX(r, x, bound);
1159 void TextMetrics::newParMetricsDown()
1161 pair<pit_type, ParagraphMetrics> const & last = *par_metrics_.rbegin();
1162 pit_type const pit = last.first + 1;
1163 if (pit == int(text_->paragraphs().size()))
1166 // do it and update its position.
1168 par_metrics_[pit].setPosition(last.second.position()
1169 + last.second.descent() + par_metrics_[pit].ascent());
1173 void TextMetrics::newParMetricsUp()
1175 pair<pit_type, ParagraphMetrics> const & first = *par_metrics_.begin();
1176 if (first.first == 0)
1179 pit_type const pit = first.first - 1;
1180 // do it and update its position.
1182 par_metrics_[pit].setPosition(first.second.position()
1183 - first.second.ascent() - par_metrics_[pit].descent());
1186 // y is screen coordinate
1187 pit_type TextMetrics::getPitNearY(int y)
1189 LASSERT(!text_->paragraphs().empty(), return -1);
1190 LASSERT(!par_metrics_.empty(), return -1);
1191 LYXERR(Debug::DEBUG, "y: " << y << " cache size: " << par_metrics_.size());
1193 // look for highest numbered paragraph with y coordinate less than given y
1196 ParMetricsCache::const_iterator it = par_metrics_.begin();
1197 ParMetricsCache::const_iterator et = par_metrics_.end();
1198 ParMetricsCache::const_iterator last = et;
1201 ParagraphMetrics const & pm = it->second;
1203 if (y < it->second.position() - int(pm.ascent())) {
1204 // We are looking for a position that is before the first paragraph in
1205 // the cache (which is in priciple off-screen, that is before the
1208 // We are already at the first paragraph in the inset.
1210 // OK, this is the paragraph we are looking for.
1211 pit = it->first - 1;
1216 ParagraphMetrics const & pm_last = par_metrics_[last->first];
1218 if (y >= last->second.position() + int(pm_last.descent())) {
1219 // We are looking for a position that is after the last paragraph in
1220 // the cache (which is in priciple off-screen), that is before the
1222 pit = last->first + 1;
1223 if (pit == int(text_->paragraphs().size()))
1224 // We are already at the last paragraph in the inset.
1226 // OK, this is the paragraph we are looking for.
1227 newParMetricsDown();
1231 for (; it != et; ++it) {
1232 LYXERR(Debug::DEBUG, "examining: pit: " << it->first
1233 << " y: " << it->second.position());
1235 ParagraphMetrics const & pm = par_metrics_[it->first];
1237 if (it->first >= pit && int(it->second.position()) - int(pm.ascent()) <= y) {
1239 yy = it->second.position();
1243 LYXERR(Debug::DEBUG, "found best y: " << yy << " for pit: " << pit);
1249 Row const & TextMetrics::getPitAndRowNearY(int & y, pit_type & pit,
1250 bool assert_in_view, bool up)
1252 ParagraphMetrics const & pm = par_metrics_[pit];
1254 int yy = pm.position() - pm.ascent();
1255 LBUFERR(!pm.rows().empty());
1256 RowList::const_iterator rit = pm.rows().begin();
1257 RowList::const_iterator rlast = pm.rows().end();
1259 for (; rit != rlast; yy += rit->height(), ++rit)
1260 if (yy + rit->height() > y)
1263 if (assert_in_view) {
1264 if (!up && yy + rit->height() > y) {
1265 if (rit != pm.rows().begin()) {
1268 } else if (pit != 0) {
1271 ParagraphMetrics const & pm2 = par_metrics_[pit];
1272 rit = pm2.rows().end();
1276 } else if (up && yy != y) {
1278 y = yy + rit->height();
1280 } else if (pit < int(text_->paragraphs().size()) - 1) {
1282 newParMetricsDown();
1283 ParagraphMetrics const & pm2 = par_metrics_[pit];
1284 rit = pm2.rows().begin();
1293 // x,y are absolute screen coordinates
1294 // sets cursor recursively descending into nested editable insets
1295 Inset * TextMetrics::editXY(Cursor & cur, int x, int y,
1296 bool assert_in_view, bool up)
1298 if (lyxerr.debugging(Debug::WORKAREA)) {
1299 LYXERR0("TextMetrics::editXY(cur, " << x << ", " << y << ")");
1300 cur.bv().coordCache().dump();
1302 pit_type pit = getPitNearY(y);
1303 LASSERT(pit != -1, return 0);
1305 int yy = y; // is modified by getPitAndRowNearY
1306 Row const & row = getPitAndRowNearY(yy, pit, assert_in_view, up);
1310 // Do we cover an inset?
1311 InsetList::InsetTable * it = checkInsetHit(pit, x, yy);
1314 // No inset, set position in the text
1315 bool bound = false; // is modified by getPosNearX
1316 int xx = x; // is modified by getPosNearX
1317 cur.pos() = getPosNearX(row, xx, bound);
1318 cur.boundary(bound);
1319 cur.setCurrentFont();
1324 Inset * inset = it->inset;
1325 //lyxerr << "inset " << inset << " hit at x: " << x << " y: " << y << endl;
1327 // Set position in front of inset
1328 cur.pos() = it->pos;
1329 cur.boundary(false);
1332 // Try to descend recursively inside the inset.
1333 Inset * edited = inset->editXY(cur, x, yy);
1334 if (edited == inset && cur.pos() == it->pos) {
1335 // non-editable inset, set cursor after the inset if x is
1336 // nearer to that position (bug 9628)
1337 CoordCache::Insets const & insetCache = bv_->coordCache().getInsets();
1338 Dimension const & dim = insetCache.dim(inset);
1339 Point p = insetCache.xy(inset);
1340 bool const is_rtl = text_->isRTL(text_->getPar(pit));
1342 // "in front of" == "right of"
1343 if (abs(p.x_ - x) < abs(p.x_ + dim.wid - x))
1346 // "in front of" == "left of"
1347 if (abs(p.x_ + dim.wid - x) < abs(p.x_ - x))
1352 if (cur.top().text() == text_)
1353 cur.setCurrentFont();
1358 void TextMetrics::setCursorFromCoordinates(Cursor & cur, int const x, int const y)
1360 LASSERT(text_ == cur.text(), return);
1361 pit_type const pit = getPitNearY(y);
1362 LASSERT(pit != -1, return);
1364 ParagraphMetrics const & pm = par_metrics_[pit];
1366 int yy = pm.position() - pm.ascent();
1367 LYXERR(Debug::DEBUG, "x: " << x << " y: " << y <<
1368 " pit: " << pit << " yy: " << yy);
1371 LBUFERR(pm.rows().size());
1372 for (; r < int(pm.rows().size()) - 1; ++r) {
1373 Row const & row = pm.rows()[r];
1374 if (int(yy + row.height()) > y)
1379 Row const & row = pm.rows()[r];
1381 LYXERR(Debug::DEBUG, "row " << r << " from pos: " << row.pos());
1385 pos_type const pos = getPosNearX(row, xx, bound);
1387 LYXERR(Debug::DEBUG, "setting cursor pit: " << pit << " pos: " << pos);
1389 text_->setCursor(cur, pit, pos, true, bound);
1390 // remember new position.
1395 //takes screen x,y coordinates
1396 InsetList::InsetTable * TextMetrics::checkInsetHit(pit_type pit, int x, int y)
1398 Paragraph const & par = text_->paragraphs()[pit];
1399 CoordCache::Insets const & insetCache = bv_->coordCache().getInsets();
1401 LYXERR(Debug::DEBUG, "x: " << x << " y: " << y << " pit: " << pit);
1403 InsetList::const_iterator iit = par.insetList().begin();
1404 InsetList::const_iterator iend = par.insetList().end();
1405 for (; iit != iend; ++iit) {
1406 Inset * inset = iit->inset;
1408 LYXERR(Debug::DEBUG, "examining inset " << inset);
1410 if (!insetCache.has(inset)) {
1411 LYXERR(Debug::DEBUG, "inset has no cached position");
1415 Dimension const & dim = insetCache.dim(inset);
1416 Point p = insetCache.xy(inset);
1418 LYXERR(Debug::DEBUG, "xo: " << p.x_ << "..." << p.x_ + dim.wid
1419 << " yo: " << p.y_ - dim.asc << "..." << p.y_ + dim.des);
1421 if (x >= p.x_ && x <= p.x_ + dim.wid
1422 && y >= p.y_ - dim.asc && y <= p.y_ + dim.des) {
1423 LYXERR(Debug::DEBUG, "Hit inset: " << inset);
1424 return const_cast<InsetList::InsetTable *>(&(*iit));
1428 LYXERR(Debug::DEBUG, "No inset hit. ");
1433 //takes screen x,y coordinates
1434 Inset * TextMetrics::checkInsetHit(int x, int y)
1436 pit_type const pit = getPitNearY(y);
1437 LASSERT(pit != -1, return 0);
1438 InsetList::InsetTable * it = checkInsetHit(pit, x, y);
1447 Row::const_iterator const
1448 TextMetrics::findRowElement(Row const & row, pos_type const pos,
1449 bool const boundary, double & x) const
1452 * When boundary is true, position i is in the row element (pos, endpos)
1455 * whereas, when boundary is false, the test is
1457 * The correction below allows to handle both cases.
1459 int const boundary_corr = (boundary && pos) ? -1 : 0;
1461 x = row.left_margin;
1463 /** Early return in trivial cases
1464 * 1) the row is empty
1465 * 2) the position is the left-most position of the row; there
1466 * is a quirk here however: if the first element is virtual
1467 * (end-of-par marker for example), then we have to look
1471 || (pos == row.begin()->left_pos() && !boundary
1472 && !row.begin()->isVirtual()))
1475 Row::const_iterator cit = row.begin();
1476 for ( ; cit != row.end() ; ++cit) {
1477 /** Look whether the cursor is inside the element's
1478 * span. Note that it is necessary to take the
1479 * boundary into account, and to accept virtual
1480 * elements, which have pos == endpos.
1482 if (pos + boundary_corr >= cit->pos
1483 && (pos + boundary_corr < cit->endpos || cit->isVirtual())) {
1484 x += cit->pos2x(pos);
1487 x += cit->full_width();
1490 if (cit == row.end())
1497 int TextMetrics::cursorX(CursorSlice const & sl,
1498 bool boundary) const
1500 LASSERT(sl.text() == text_, return 0);
1502 ParagraphMetrics const & pm = par_metrics_[sl.pit()];
1503 if (pm.rows().empty())
1505 Row const & row = pm.getRow(sl.pos(), boundary);
1506 pos_type const pos = sl.pos();
1509 findRowElement(row, pos, boundary, x);
1515 int TextMetrics::cursorY(CursorSlice const & sl, bool boundary) const
1517 //lyxerr << "TextMetrics::cursorY: boundary: " << boundary << endl;
1518 ParagraphMetrics const & pm = par_metrics_[sl.pit()];
1519 if (pm.rows().empty())
1523 h -= par_metrics_[0].rows()[0].ascent();
1524 for (pit_type pit = 0; pit < sl.pit(); ++pit) {
1525 h += par_metrics_[pit].height();
1528 if (pos && boundary)
1530 size_t const rend = pm.pos2row(pos);
1531 for (size_t rit = 0; rit != rend; ++rit)
1532 h += pm.rows()[rit].height();
1533 h += pm.rows()[rend].ascent();
1538 // the cursor set functions have a special mechanism. When they
1539 // realize you left an empty paragraph, they will delete it.
1541 bool TextMetrics::cursorHome(Cursor & cur)
1543 LASSERT(text_ == cur.text(), return false);
1544 ParagraphMetrics const & pm = par_metrics_[cur.pit()];
1545 Row const & row = pm.getRow(cur.pos(),cur.boundary());
1546 return text_->setCursor(cur, cur.pit(), row.pos());
1550 bool TextMetrics::cursorEnd(Cursor & cur)
1552 LASSERT(text_ == cur.text(), return false);
1553 // if not on the last row of the par, put the cursor before
1554 // the final space exept if I have a spanning inset or one string
1555 // is so long that we force a break.
1556 pos_type end = cur.textRow().endpos();
1558 // empty text, end-1 is no valid position
1560 bool boundary = false;
1561 if (end != cur.lastpos()) {
1562 if (!cur.paragraph().isLineSeparator(end-1)
1563 && !cur.paragraph().isNewline(end-1)
1564 && !cur.paragraph().isEnvSeparator(end-1))
1568 } else if (cur.paragraph().isEnvSeparator(end-1))
1570 return text_->setCursor(cur, cur.pit(), end, true, boundary);
1574 void TextMetrics::deleteLineForward(Cursor & cur)
1576 LASSERT(text_ == cur.text(), return);
1577 if (cur.lastpos() == 0) {
1578 // Paragraph is empty, so we just go forward
1579 text_->cursorForward(cur);
1582 cur.selection(true); // to avoid deletion
1585 // What is this test for ??? (JMarc)
1586 if (!cur.selection())
1587 text_->deleteWordForward(cur);
1589 cap::cutSelection(cur, true, false);
1590 cur.checkBufferStructure();
1595 bool TextMetrics::isLastRow(Row const & row) const
1597 ParagraphList const & pars = text_->paragraphs();
1598 return row.endpos() >= pars[row.pit()].size()
1599 && row.pit() + 1 == pit_type(pars.size());
1603 bool TextMetrics::isFirstRow(Row const & row) const
1605 return row.pos() == 0 && row.pit() == 0;
1609 int TextMetrics::leftMargin(int max_width, pit_type pit) const
1611 return leftMargin(max_width, pit, text_->paragraphs()[pit].size());
1615 int TextMetrics::leftMargin(int max_width,
1616 pit_type const pit, pos_type const pos) const
1618 ParagraphList const & pars = text_->paragraphs();
1620 LASSERT(pit >= 0, return 0);
1621 LASSERT(pit < int(pars.size()), return 0);
1622 Paragraph const & par = pars[pit];
1623 LASSERT(pos >= 0, return 0);
1624 LASSERT(pos <= par.size(), return 0);
1625 Buffer const & buffer = bv_->buffer();
1626 //lyxerr << "TextMetrics::leftMargin: pit: " << pit << " pos: " << pos << endl;
1627 DocumentClass const & tclass = buffer.params().documentClass();
1628 Layout const & layout = par.layout();
1629 FontMetrics const & bfm = theFontMetrics(buffer.params().getFont());
1631 docstring parindent = layout.parindent;
1635 if (text_->isMainText())
1636 l_margin += bv_->leftMargin();
1638 l_margin += bfm.signedWidth(tclass.leftmargin());
1640 int depth = par.getDepth();
1642 // find the next level paragraph
1643 pit_type newpar = text_->outerHook(pit);
1644 if (newpar != pit_type(pars.size())) {
1645 if (pars[newpar].layout().isEnvironment()) {
1646 int nestmargin = depth * nestMargin();
1647 if (text_->isMainText())
1648 nestmargin += changebarMargin();
1649 l_margin = max(leftMargin(max_width, newpar), nestmargin);
1650 // Remove the parindent that has been added
1651 // if the paragraph was empty.
1652 if (pars[newpar].empty() &&
1653 buffer.params().paragraph_separation ==
1654 BufferParams::ParagraphIndentSeparation) {
1655 docstring pi = pars[newpar].layout().parindent;
1656 l_margin -= bfm.signedWidth(pi);
1659 if (tclass.isDefaultLayout(par.layout())
1660 || tclass.isPlainLayout(par.layout())) {
1661 if (pars[newpar].params().noindent())
1664 parindent = pars[newpar].layout().parindent;
1669 // This happens after sections or environments in standard classes.
1670 // We have to check the previous layout at same depth.
1671 if (buffer.params().paragraph_separation ==
1672 BufferParams::ParagraphSkipSeparation)
1674 else if (pit > 0 && pars[pit - 1].getDepth() >= par.getDepth()) {
1675 pit_type prev = text_->depthHook(pit, par.getDepth());
1676 if (par.layout() == pars[prev].layout()) {
1678 && pars[pit - 1].layout().nextnoindent)
1680 } else if (pars[prev].layout().nextnoindent)
1684 FontInfo const labelfont = text_->labelFont(par);
1685 FontMetrics const & lfm = theFontMetrics(labelfont);
1687 switch (layout.margintype) {
1688 case MARGIN_DYNAMIC:
1689 if (!layout.leftmargin.empty()) {
1690 l_margin += bfm.signedWidth(layout.leftmargin);
1692 if (!par.labelString().empty()) {
1693 l_margin += lfm.signedWidth(layout.labelindent);
1694 l_margin += lfm.width(par.labelString());
1695 l_margin += lfm.width(layout.labelsep);
1699 case MARGIN_MANUAL: {
1700 l_margin += lfm.signedWidth(layout.labelindent);
1701 // The width of an empty par, even with manual label, should be 0
1702 if (!par.empty() && pos >= par.beginOfBody()) {
1703 if (!par.getLabelWidthString().empty()) {
1704 docstring labstr = par.getLabelWidthString();
1705 l_margin += lfm.width(labstr);
1706 l_margin += lfm.width(layout.labelsep);
1712 case MARGIN_STATIC: {
1713 l_margin += bfm.signedWidth(layout.leftmargin) * 4
1714 / (par.getDepth() + 4);
1718 case MARGIN_FIRST_DYNAMIC:
1719 if (layout.labeltype == LABEL_MANUAL) {
1720 // if we are at position 0, we are never in the body
1721 if (pos > 0 && pos >= par.beginOfBody())
1722 l_margin += lfm.signedWidth(layout.leftmargin);
1724 l_margin += lfm.signedWidth(layout.labelindent);
1726 // Special case to fix problems with
1728 || (layout.labeltype == LABEL_STATIC
1729 && layout.latextype == LATEX_ENVIRONMENT
1730 && !text_->isFirstInSequence(pit))) {
1731 l_margin += lfm.signedWidth(layout.leftmargin);
1732 } else if (!layout.labelIsAbove()) {
1733 l_margin += lfm.signedWidth(layout.labelindent);
1734 l_margin += lfm.width(layout.labelsep);
1735 l_margin += lfm.width(par.labelString());
1739 case MARGIN_RIGHT_ADDRESS_BOX: {
1741 // The left margin depends on the widest row in this paragraph.
1742 // This code is wrong because it depends on the rows, but at the
1743 // same time this function is used in redoParagraph to construct
1745 ParagraphMetrics const & pm = par_metrics_[pit];
1746 RowList::const_iterator rit = pm.rows().begin();
1747 RowList::const_iterator end = pm.rows().end();
1748 int minfill = max_width;
1749 for ( ; rit != end; ++rit)
1750 if (rit->fill() < minfill)
1751 minfill = rit->fill();
1752 l_margin += bfm.signedWidth(layout.leftmargin);
1753 l_margin += minfill;
1755 // also wrong, but much shorter.
1756 l_margin += max_width / 2;
1761 if (!par.params().leftIndent().zero())
1762 l_margin += par.params().leftIndent().inPixels(max_width, lfm.em());
1766 if (par.params().align() == LYX_ALIGN_LAYOUT)
1767 align = layout.align;
1769 align = par.params().align();
1771 // set the correct parindent
1773 && (layout.labeltype == LABEL_NO_LABEL
1774 || layout.labeltype == LABEL_ABOVE
1775 || layout.labeltype == LABEL_CENTERED
1776 || (layout.labeltype == LABEL_STATIC
1777 && layout.latextype == LATEX_ENVIRONMENT
1778 && !text_->isFirstInSequence(pit)))
1779 && (align == LYX_ALIGN_BLOCK || align == LYX_ALIGN_LEFT)
1780 && !par.params().noindent()
1781 // in some insets, paragraphs are never indented
1782 && !text_->inset().neverIndent()
1783 // display style insets are always centered, omit indentation
1786 && par.getInset(pos)->display())
1787 && (!(tclass.isDefaultLayout(par.layout())
1788 || tclass.isPlainLayout(par.layout()))
1789 || buffer.params().paragraph_separation
1790 == BufferParams::ParagraphIndentSeparation)) {
1791 // use the parindent of the layout when the
1792 // default indentation is used otherwise use
1793 // the indentation set in the document
1795 if (buffer.params().getIndentation().asLyXCommand() == "default")
1796 l_margin += bfm.signedWidth(parindent);
1798 l_margin += buffer.params().getIndentation().inPixels(*bv_);
1805 void TextMetrics::draw(PainterInfo & pi, int x, int y) const
1807 if (par_metrics_.empty())
1813 ParMetricsCache::iterator it = par_metrics_.begin();
1814 ParMetricsCache::iterator const pm_end = par_metrics_.end();
1815 y -= it->second.ascent();
1816 for (; it != pm_end; ++it) {
1817 ParagraphMetrics const & pmi = it->second;
1819 pit_type const pit = it->first;
1820 // Save the paragraph position in the cache.
1821 it->second.setPosition(y);
1822 drawParagraph(pi, pit, x, y);
1828 void TextMetrics::drawParagraph(PainterInfo & pi, pit_type const pit, int const x, int y) const
1830 ParagraphMetrics const & pm = par_metrics_[pit];
1831 if (pm.rows().empty())
1833 size_t const nrows = pm.rows().size();
1835 // Use fast lane when drawing is disabled.
1836 if (!pi.pain.isDrawingEnabled()) {
1837 for (size_t i = 0; i != nrows; ++i) {
1839 Row const & row = pm.rows()[i];
1840 // Adapt to cursor row scroll offset if applicable.
1841 int row_x = x - bv_->horizScrollOffset(text_, pit, row.pos());
1845 RowPainter rp(pi, *text_, row, row_x, y);
1847 rp.paintOnlyInsets();
1853 BufferParams const & bparams = bv_->buffer().params();
1854 int const ww = bv_->workHeight();
1855 Cursor const & cur = bv_->cursor();
1856 DocIterator sel_beg = cur.selectionBegin();
1857 DocIterator sel_end = cur.selectionEnd();
1858 bool selection = cur.selection()
1859 // This is our text.
1860 && cur.text() == text_
1861 // if the anchor is outside, this is not our selection
1862 && cur.normalAnchor().text() == text_
1863 && pit >= sel_beg.pit() && pit <= sel_end.pit();
1865 // We store the begin and end pos of the selection relative to this par
1866 DocIterator sel_beg_par = cur.selectionBegin();
1867 DocIterator sel_end_par = cur.selectionEnd();
1869 // We care only about visible selection.
1871 if (pit != sel_beg.pit()) {
1872 sel_beg_par.pit() = pit;
1873 sel_beg_par.pos() = 0;
1875 if (pit != sel_end.pit()) {
1876 sel_end_par.pit() = pit;
1877 sel_end_par.pos() = sel_end_par.lastpos();
1881 for (size_t i = 0; i != nrows; ++i) {
1883 Row const & row = pm.rows()[i];
1884 // Adapt to cursor row scroll offset if applicable.
1885 int row_x = x - bv_->horizScrollOffset(text_, pit, row.pos());
1889 RowPainter rp(pi, *text_, row, row_x, y);
1891 // It is not needed to draw on screen if we are not inside.
1892 bool const inside = (y + row.descent() >= 0
1893 && y - row.ascent() < ww);
1894 pi.pain.setDrawingEnabled(inside);
1896 // Paint only the insets to set inset cache correctly
1897 // FIXME: remove paintOnlyInsets when we know that positions
1898 // have already been set.
1899 rp.paintOnlyInsets();
1905 row.setSelectionAndMargins(sel_beg_par, sel_end_par);
1907 row.setSelection(-1, -1);
1909 // The row knows nothing about the paragraph, so we have to check
1910 // whether this row is the first or last and update the margins.
1911 if (row.selection()) {
1912 if (row.sel_beg == 0)
1913 row.begin_margin_sel = sel_beg.pit() < pit;
1914 if (row.sel_end == sel_end_par.lastpos())
1915 row.end_margin_sel = sel_end.pit() > pit;
1918 // Row signature; has row changed since last paint?
1919 row.setCrc(pm.computeRowSignature(row, bparams));
1920 bool row_has_changed = row.changed()
1921 || bv_->hadHorizScrollOffset(text_, pit, row.pos());
1923 // Take this opportunity to spellcheck the row contents.
1924 if (row_has_changed && pi.do_spellcheck && lyxrc.spellcheck_continuously) {
1925 text_->getPar(pit).spellCheck();
1928 // Don't paint the row if a full repaint has not been requested
1929 // and if it has not changed.
1930 if (!pi.full_repaint && !row_has_changed) {
1931 // Paint only the insets if the text itself is
1933 rp.paintOnlyInsets();
1938 // Clear background of this row if paragraph background was not
1939 // already cleared because of a full repaint.
1940 if (!pi.full_repaint && row_has_changed) {
1941 LYXERR(Debug::PAINTING, "Clear rect@("
1942 << max(row_x, 0) << ", " << y - row.ascent() << ")="
1943 << width() << " x " << row.height());
1944 pi.pain.fillRectangle(max(row_x, 0), y - row.ascent(),
1945 width(), row.height(), pi.background_color);
1948 // Instrumentation for testing row cache (see also
1950 if (lyxerr.debugging(Debug::PAINTING)
1951 && (row.selection() || pi.full_repaint || row_has_changed)) {
1952 string const foreword = text_->isMainText() ?
1953 "main text redraw " : "inset text redraw: ";
1954 LYXERR(Debug::PAINTING, foreword << "pit=" << pit << " row=" << i
1955 << " row_selection=" << row.selection()
1956 << " full_repaint=" << pi.full_repaint
1957 << " row_has_changed=" << row_has_changed
1958 << " drawingEnabled=" << pi.pain.isDrawingEnabled());
1961 // Backup full_repaint status and force full repaint
1962 // for inner insets as the Row has been cleared out.
1963 bool tmp = pi.full_repaint;
1964 pi.full_repaint = true;
1966 rp.paintSelection();
1969 rp.paintChangeBar();
1970 bool const is_rtl = text_->isRTL(text_->getPar(pit));
1971 if (i == 0 && !is_rtl)
1973 if (i == nrows - 1 && is_rtl)
1976 if (i == nrows - 1 && !is_rtl)
1978 if (i == 0 && is_rtl)
1980 rp.paintTooLargeMarks(row_x + row.left_x() < 0,
1981 row_x + row.right_x() > bv_->workWidth());
1984 // Restore full_repaint status.
1985 pi.full_repaint = tmp;
1987 // Re-enable screen drawing for future use of the painter.
1988 pi.pain.setDrawingEnabled(true);
1990 //LYXERR(Debug::PAINTING, ".");
1994 void TextMetrics::completionPosAndDim(Cursor const & cur, int & x, int & y,
1995 Dimension & dim) const
1997 Cursor const & bvcur = cur.bv().cursor();
1999 // get word in front of cursor
2000 docstring word = text_->previousWord(bvcur.top());
2001 DocIterator wordStart = bvcur;
2002 wordStart.pos() -= word.length();
2004 // get position on screen of the word start and end
2005 //FIXME: Is it necessary to explicitly set this to false?
2006 wordStart.boundary(false);
2007 Point lxy = cur.bv().getPos(wordStart);
2008 Point rxy = cur.bv().getPos(bvcur);
2010 // calculate dimensions of the word
2012 row.pos(wordStart.pos());
2013 row.endpos(bvcur.pos());
2014 setRowHeight(row, false);
2015 dim = row.dimension();
2016 dim.wid = abs(rxy.x_ - lxy.x_);
2018 // calculate position of word
2020 x = min(rxy.x_, lxy.x_);
2022 //lyxerr << "wid=" << dim.width() << " x=" << x << " y=" << y << " lxy.x_=" << lxy.x_ << " rxy.x_=" << rxy.x_ << " word=" << word << std::endl;
2023 //lyxerr << " wordstart=" << wordStart << " bvcur=" << bvcur << " cur=" << cur << std::endl;
2026 int defaultRowHeight()
2028 return int(theFontMetrics(sane_font).maxHeight() * 1.2);