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 // maximum pixel width of a row
442 if (row_index == pm.rows().size())
443 pm.rows().push_back(Row());
444 Row & row = pm.rows()[row_index];
447 breakRow(row, right_margin, pit);
448 setRowHeight(row, pit);
449 row.setChanged(false);
450 if (row_index || row.endpos() < par.size()
451 || (row.right_boundary() && par.inInset().lyxCode() != CELL_CODE)) {
452 /* If there is more than one row or the row has been
453 * broken by a display inset or a newline, expand the text
454 * to the full allowable width. This setting here is
455 * needed for the computeRowMetrics() below. In the case
456 * of a display inset, we do nothing when inside a table
457 * cell, because the tabular code is not prepared for
458 * that, and it triggers when using a caption in a
459 * longtable (see bugs #9945 and #9757).
461 if (dim_.wid < max_width_)
462 dim_.wid = max_width_;
464 int const max_row_width = max(dim_.wid, row.width());
465 computeRowMetrics(pit, row, max_row_width);
466 first = row.endpos();
469 pm.dim().wid = max(pm.dim().wid, row.width());
470 pm.dim().des += row.height();
471 } while (first < par.size());
473 if (row_index < pm.rows().size())
474 pm.rows().resize(row_index);
476 // Make sure that if a par ends in newline, there is one more row
478 if (first > 0 && par.isNewline(first - 1)) {
479 if (row_index == pm.rows().size())
480 pm.rows().push_back(Row());
481 Row & row = pm.rows()[row_index];
483 breakRow(row, right_margin, pit);
484 setRowHeight(row, pit);
485 row.setChanged(false);
486 int const max_row_width = max(dim_.wid, row.width());
487 computeRowMetrics(pit, row, max_row_width);
488 pm.dim().des += row.height();
491 pm.dim().asc += pm.rows()[0].ascent();
492 pm.dim().des -= pm.rows()[0].ascent();
494 changed |= old_dim.height() != pm.dim().height();
500 LyXAlignment TextMetrics::getAlign(Paragraph const & par, Row const & row) const
502 Layout const & layout = par.layout();
505 if (par.params().align() == LYX_ALIGN_LAYOUT)
506 align = layout.align;
508 align = par.params().align();
510 // handle alignment inside tabular cells
511 Inset const & owner = text_->inset();
512 bool forced_block = false;
513 switch (owner.contentAlignment()) {
514 case LYX_ALIGN_BLOCK:
515 // In general block align is the default state, but here it is
516 // an explicit choice. Therefore it should not be overridden
520 case LYX_ALIGN_CENTER:
522 case LYX_ALIGN_RIGHT:
523 if (align == LYX_ALIGN_NONE || align == LYX_ALIGN_BLOCK)
524 align = owner.contentAlignment();
527 // unchanged (use align)
531 // Display-style insets should always be on a centered row
532 if (Inset const * inset = par.getInset(row.pos())) {
533 switch (inset->display()) {
534 case Inset::AlignLeft:
535 align = LYX_ALIGN_BLOCK;
537 case Inset::AlignCenter:
538 align = LYX_ALIGN_CENTER;
541 // unchanged (use align)
543 case Inset::AlignRight:
544 align = LYX_ALIGN_RIGHT;
549 if (align == LYX_ALIGN_BLOCK) {
550 // If this row has been broken abruptly by a display inset, or
551 // it is the end of the paragraph, or the user requested we
552 // not justify stuff, then don't stretch.
553 // A forced block alignment can only be overridden the 'no
554 // justification on screen' setting.
555 if (((row.right_boundary() || row.endpos() == par.size())
557 || !bv_->buffer().params().justification)
558 align = text_->isRTL(par) ? LYX_ALIGN_RIGHT : LYX_ALIGN_LEFT;
565 void TextMetrics::computeRowMetrics(pit_type const pit,
566 Row & row, int width) const
571 Paragraph const & par = text_->getPar(pit);
573 int const w = width - row.right_margin - row.width();
574 // FIXME: put back this assertion when the crash on new doc is solved.
575 //LASSERT(w >= 0, /**/);
577 // is there a manual margin with a manual label
578 Layout const & layout = par.layout();
581 if (layout.margintype == MARGIN_MANUAL
582 && layout.labeltype == LABEL_MANUAL) {
583 /// We might have real hfills in the label part
584 nlh = numberOfLabelHfills(par, row);
586 // A manual label par (e.g. List) has an auto-hfill
587 // between the label text and the body of the
589 // But we don't want to do this auto hfill if the par
594 if (nlh && !par.getLabelWidthString().empty())
595 row.label_hfill = labelFill(pit, row) / double(nlh);
598 // are there any hfills in the row?
599 ParagraphMetrics & pm = par_metrics_[pit];
600 int nh = numberOfHfills(row, pm, par.beginOfBody());
604 // We don't have to look at the alignment if the row is already
605 // larger then the permitted width as then we force the
606 // LEFT_ALIGN'edness!
607 if (int(row.width()) >= max_width_)
611 // Common case : there is no hfill, and the alignment will be
613 switch (getAlign(par, row)) {
614 case LYX_ALIGN_BLOCK: {
615 int const ns = row.countSeparators();
616 // If we have separators, then stretch the row
618 row.setSeparatorExtraWidth(double(w) / ns);
619 row.dimension().wid += w;
620 } else if (text_->isRTL(par)) {
621 row.left_margin += w;
622 row.dimension().wid += w;
626 case LYX_ALIGN_RIGHT:
627 row.left_margin += w;
628 row.dimension().wid += w;
630 case LYX_ALIGN_CENTER:
631 row.dimension().wid += w / 2;
632 row.left_margin += w / 2;
636 case LYX_ALIGN_LAYOUT:
637 case LYX_ALIGN_SPECIAL:
638 case LYX_ALIGN_DECIMAL:
646 row.dimension().wid += w;
647 // Set size of hfill insets
648 pos_type const endpos = row.endpos();
649 pos_type body_pos = par.beginOfBody();
651 && (body_pos > endpos || !par.isLineSeparator(body_pos - 1)))
654 CoordCache::Insets & insetCache = bv_->coordCache().insets();
655 Row::iterator cit = row.begin();
656 Row::iterator const cend = row.end();
657 for ( ; cit != cend; ++cit) {
658 if (row.label_hfill && cit->endpos == body_pos
659 && cit->type == Row::SPACE)
660 cit->dim.wid -= int(row.label_hfill * (nlh - 1));
661 if (cit->inset && pm.hfillExpansion(row, cit->pos)) {
662 if (cit->pos >= body_pos) {
663 cit->dim.wid += hfill;
666 cit->dim.wid += hfill_rem;
668 cit->dim.wid += int(row.label_hfill);
669 // Cache the inset dimension.
670 insetCache.add(cit->inset, cit->dim);
676 int TextMetrics::labelFill(pit_type const pit, Row const & row) const
678 Paragraph const & par = text_->getPar(pit);
679 LBUFERR(par.beginOfBody() > 0 || par.isEnvSeparator(0));
682 Row::const_iterator cit = row.begin();
683 Row::const_iterator const end = row.end();
684 // iterate over elements before main body (except the last one,
685 // which is extra space).
686 while (cit!= end && cit->endpos < par.beginOfBody()) {
691 docstring const & label = par.params().labelWidthString();
695 FontMetrics const & fm
696 = theFontMetrics(text_->labelFont(par));
698 return max(0, fm.width(label) - w);
703 // Not used, see TextMetrics::breakRow
704 // this needs special handling - only newlines count as a break point
705 static pos_type addressBreakPoint(pos_type i, Paragraph const & par)
707 pos_type const end = par.size();
710 if (par.isNewline(i))
718 int TextMetrics::labelEnd(pit_type const pit) const
720 // labelEnd is only needed if the layout fills a flushleft label.
721 if (text_->getPar(pit).layout().margintype != MARGIN_MANUAL)
723 // return the beginning of the body
724 return leftMargin(max_width_, pit);
730 * Calling Text::getFont is slow. While rebreaking we scan a
731 * paragraph from left to right calling getFont for every char. This
732 * simple class address this problem by hidding an optimization trick
733 * (not mine btw -AB): the font is reused in the whole font span. The
734 * class handles transparently the "hidden" (not part of the fontlist)
735 * label font (as getFont does).
741 FontIterator(TextMetrics const & tm,
742 Paragraph const & par, pit_type pit, pos_type pos)
743 : tm_(tm), par_(par), pit_(pit), pos_(pos),
744 font_(tm.displayFont(pit, pos)),
745 endspan_(par.fontSpan(pos).last),
746 bodypos_(par.beginOfBody())
750 Font const & operator*() const { return font_; }
753 FontIterator & operator++()
756 if (pos_ < par_.size() && (pos_ > endspan_ || pos_ == bodypos_)) {
757 font_ = tm_.displayFont(pit_, pos_);
758 endspan_ = par_.fontSpan(pos_).last;
764 Font * operator->() { return &font_; }
768 TextMetrics const & tm_;
770 Paragraph const & par_;
785 /** This is the function where the hard work is done. The code here is
786 * very sensitive to small changes :) Note that part of the
787 * intelligence is also in Row::shortenIfNeeded.
789 void TextMetrics::breakRow(Row & row, int const right_margin, pit_type const pit) const
791 Paragraph const & par = text_->getPar(pit);
792 pos_type const end = par.size();
793 pos_type const pos = row.pos();
794 pos_type const body_pos = par.beginOfBody();
795 bool const is_rtl = text_->isRTL(par);
796 bool need_new_row = false;
799 row.left_margin = leftMargin(max_width_, pit, pos);
800 row.right_margin = right_margin;
802 swap(row.left_margin, row.right_margin);
803 // Remember that the row width takes into account the left_margin
804 // but not the right_margin.
805 row.dimension().wid = row.left_margin;
806 // the width available for the row.
807 int const width = max_width_ - row.right_margin;
809 ParagraphList const & pars = text_->paragraphs();
812 //FIXME: As long as leftMargin() is not correctly implemented for
813 // MARGIN_RIGHT_ADDRESS_BOX, we should also not do this here.
814 // Otherwise, long rows will be painted off the screen.
815 if (par.layout().margintype == MARGIN_RIGHT_ADDRESS_BOX)
816 return addressBreakPoint(pos, par);
819 // check for possible inline completion
820 DocIterator const & ic_it = bv_->inlineCompletionPos();
821 pos_type ic_pos = -1;
822 if (ic_it.inTexted() && ic_it.text() == text_ && ic_it.pit() == pit)
823 ic_pos = ic_it.pos();
825 // Now we iterate through until we reach the right margin
826 // or the end of the par, then build a representation of the row.
828 FontIterator fi = FontIterator(*this, par, pit, pos);
830 // this can happen for an empty row after a newline
833 char_type c = par.getChar(i);
834 // The most special cases are handled first.
835 if (par.isInset(i)) {
836 Inset const * ins = par.getInset(i);
837 Dimension dim = bv_->coordCache().insets().dim(ins);
838 row.add(i, ins, dim, *fi, par.lookupChange(i));
839 } else if (c == ' ' && i + 1 == body_pos) {
840 // There is a space at i, but it should not be
841 // added as a separator, because it is just
842 // before body_pos. Instead, insert some spacing to
844 FontMetrics const & fm = theFontMetrics(text_->labelFont(par));
845 // this is needed to make sure that the row width is correct
847 int const add = max(fm.width(par.layout().labelsep),
848 labelEnd(pit) - row.width());
849 row.addSpace(i, add, *fi, par.lookupChange(i));
850 } else if (c == '\t')
851 row.addSpace(i, theFontMetrics(*fi).width(from_ascii(" ")),
852 *fi, par.lookupChange(i));
854 // FIXME: please someone fix the Hebrew/Arabic parenthesis mess!
855 // see also Paragraph::getUChar.
856 if (fi->language()->lang() == "hebrew") {
862 row.add(i, c, *fi, par.lookupChange(i));
865 // add inline completion width
866 // draw logically behind the previous character
867 if (ic_pos == i + 1 && !bv_->inlineCompletion().empty()) {
868 docstring const comp = bv_->inlineCompletion();
869 size_t const uniqueTo =bv_->inlineCompletionUniqueChars();
873 f.fontInfo().setColor(Color_inlinecompletion);
874 row.addVirtual(i + 1, comp.substr(0, uniqueTo), f, Change());
876 f.fontInfo().setColor(Color_nonunique_inlinecompletion);
877 row.addVirtual(i + 1, comp.substr(uniqueTo), f, Change());
880 // Handle some situations that abruptly terminate the row
882 // - Before a display inset
883 // - After a display inset
884 Inset const * inset = 0;
885 if (par.isNewline(i) || par.isEnvSeparator(i)
886 || (i + 1 < end && (inset = par.getInset(i + 1))
888 || (!row.empty() && row.back().inset
889 && row.back().inset->display())) {
890 row.right_boundary(true);
891 need_new_row = par.isNewline(i);
898 } while (i < end && row.width() <= width);
902 // End of paragraph marker
903 if (lyxrc.paragraph_markers && !need_new_row
904 && i == end && size_type(pit + 1) < pars.size()) {
905 // add a virtual element for the end-of-paragraph
906 // marker; it is shown on screen, but does not exist
908 Font f(text_->layoutFont(pit));
909 f.fontInfo().setColor(Color_paragraphmarker);
910 BufferParams const & bparams
911 = text_->inset().buffer().params();
912 f.setLanguage(par.getParLanguage(bparams));
913 row.addVirtual(end, docstring(1, char_type(0x00B6)), f, Change());
916 // if the row is too large, try to cut at last separator. In case
917 // of success, reset indication that the row was broken abruptly.
918 if (row.shortenIfNeeded(body_pos, width))
919 row.right_boundary(false);
921 // make sure that the RTL elements are in reverse ordering
922 row.reverseRTL(is_rtl);
923 //LYXERR0("breakrow: row is " << row);
927 void TextMetrics::setRowHeight(Row & row, pit_type const pit,
928 bool topBottomSpace) const
930 Paragraph const & par = text_->getPar(pit);
931 // get the maximum ascent and the maximum descent
932 double layoutasc = 0;
933 double layoutdesc = 0;
934 double const dh = defaultRowHeight();
936 // ok, let us initialize the maxasc and maxdesc value.
937 // Only the fontsize count. The other properties
938 // are taken from the layoutfont. Nicer on the screen :)
939 Layout const & layout = par.layout();
941 // as max get the first character of this row then it can
942 // increase but not decrease the height. Just some point to
943 // start with so we don't have to do the assignment below too
945 Buffer const & buffer = bv_->buffer();
946 Font font = displayFont(pit, row.pos());
947 FontSize const tmpsize = font.fontInfo().size();
948 font.fontInfo() = text_->layoutFont(pit);
949 FontSize const size = font.fontInfo().size();
950 font.fontInfo().setSize(tmpsize);
952 FontInfo labelfont = text_->labelFont(par);
954 FontMetrics const & lfm = theFontMetrics(labelfont);
955 FontMetrics const & fm = theFontMetrics(font);
957 // these are minimum values
958 double const spacing_val = layout.spacing.getValue()
959 * text_->spacing(par);
960 //lyxerr << "spacing_val = " << spacing_val << endl;
961 int maxasc = int(fm.maxAscent() * spacing_val);
962 int maxdesc = int(fm.maxDescent() * spacing_val);
964 // insets may be taller
965 CoordCache::Insets const & insetCache = bv_->coordCache().getInsets();
966 Row::const_iterator cit = row.begin();
967 Row::const_iterator cend = row.end();
968 for ( ; cit != cend; ++cit) {
970 Dimension const & dim = insetCache.dim(cit->inset);
971 maxasc = max(maxasc, dim.ascent());
972 maxdesc = max(maxdesc, dim.descent());
976 // Check if any custom fonts are larger (Asger)
977 // This is not completely correct, but we can live with the small,
978 // cosmetic error for now.
982 par.highestFontInRange(row.pos(), row.endpos(), size);
983 if (maxsize > font.fontInfo().size()) {
984 // use standard paragraph font with the maximal size
985 FontInfo maxfont = font.fontInfo();
986 maxfont.setSize(maxsize);
987 FontMetrics const & maxfontmetrics = theFontMetrics(maxfont);
988 maxasc = max(maxasc, maxfontmetrics.maxAscent());
989 maxdesc = max(maxdesc, maxfontmetrics.maxDescent());
992 // This is nicer with box insets:
996 ParagraphList const & pars = text_->paragraphs();
997 Inset const & inset = text_->inset();
1000 if (row.pos() == 0 && topBottomSpace) {
1001 BufferParams const & bufparams = buffer.params();
1002 // some parskips VERY EASY IMPLEMENTATION
1003 if (bufparams.paragraph_separation == BufferParams::ParagraphSkipSeparation
1004 && !inset.getLayout().parbreakIsNewline()
1005 && !par.layout().parbreak_is_newline
1007 && ((layout.isParagraph() && par.getDepth() == 0)
1008 || (pars[pit - 1].layout().isParagraph()
1009 && pars[pit - 1].getDepth() == 0))) {
1010 maxasc += bufparams.getDefSkip().inPixels(*bv_);
1013 if (par.params().startOfAppendix())
1014 maxasc += int(3 * dh);
1016 // special code for the top label
1017 if (layout.labelIsAbove()
1018 && (!layout.isParagraphGroup() || text_->isFirstInSequence(pit))
1019 && !par.labelString().empty()) {
1022 * layout.spacing.getValue()
1023 * text_->spacing(par)
1024 + (layout.topsep + layout.labelbottomsep) * dh);
1027 // Add the layout spaces, for example before and after
1028 // a section, or between the items of a itemize or enumerate
1031 pit_type prev = text_->depthHook(pit, par.getDepth());
1032 Paragraph const & prevpar = pars[prev];
1034 && prevpar.layout() == layout
1035 && prevpar.getDepth() == par.getDepth()
1036 && prevpar.getLabelWidthString()
1037 == par.getLabelWidthString()) {
1038 layoutasc = layout.itemsep * dh;
1039 } else if (pit != 0 || row.pos() != 0) {
1040 if (layout.topsep > 0)
1041 layoutasc = layout.topsep * dh;
1044 prev = text_->outerHook(pit);
1045 if (prev != pit_type(pars.size())) {
1046 maxasc += int(pars[prev].layout().parsep * dh);
1047 } else if (pit != 0) {
1048 Paragraph const & prevpar = pars[pit - 1];
1049 if (prevpar.getDepth() != 0 ||
1050 prevpar.layout() == layout) {
1051 maxasc += int(layout.parsep * dh);
1056 // is it a bottom line?
1057 if (row.endpos() >= par.size() && topBottomSpace) {
1058 // add the layout spaces, for example before and after
1059 // a section, or between the items of a itemize or enumerate
1061 pit_type nextpit = pit + 1;
1062 if (nextpit != pit_type(pars.size())) {
1063 pit_type cpit = pit;
1065 if (pars[cpit].getDepth() > pars[nextpit].getDepth()) {
1066 double usual = pars[cpit].layout().bottomsep * dh;
1068 cpit = text_->depthHook(cpit, pars[nextpit].getDepth());
1069 if (pars[cpit].layout() != pars[nextpit].layout()
1070 || pars[nextpit].getLabelWidthString() != pars[cpit].getLabelWidthString())
1071 unusual = pars[cpit].layout().bottomsep * dh;
1072 layoutdesc = max(unusual, usual);
1073 } else if (pars[cpit].getDepth() == pars[nextpit].getDepth()) {
1074 if (pars[cpit].layout() != pars[nextpit].layout()
1075 || pars[nextpit].getLabelWidthString() != pars[cpit].getLabelWidthString())
1076 layoutdesc = int(pars[cpit].layout().bottomsep * dh);
1081 // incalculate the layout spaces
1082 maxasc += int(layoutasc * 2 / (2 + pars[pit].getDepth()));
1083 maxdesc += int(layoutdesc * 2 / (2 + pars[pit].getDepth()));
1085 // FIXME: the correct way is to do the following is to move the
1086 // following code in another method specially tailored for the
1087 // main Text. The following test is thus bogus.
1088 // Top and bottom margin of the document (only at top-level)
1089 if (text_->isMainText() && topBottomSpace) {
1090 if (pit == 0 && row.pos() == 0)
1092 if (pit + 1 == pit_type(pars.size()) &&
1093 row.endpos() == par.size() &&
1094 !(row.endpos() > 0 && par.isNewline(row.endpos() - 1)))
1098 row.dimension().asc = maxasc + labeladdon;
1099 row.dimension().des = maxdesc;
1103 // x is an absolute screen coord
1104 // returns the column near the specified x-coordinate of the row
1105 // x is set to the real beginning of this column
1106 pos_type TextMetrics::getPosNearX(Row const & row, int & x,
1107 bool & boundary) const
1109 //LYXERR0("getPosNearX(" << x << ") row=" << row);
1110 /// For the main Text, it is possible that this pit is not
1111 /// yet in the CoordCache when moving cursor up.
1112 /// x Paragraph coordinate is always 0 for main text anyway.
1113 int const xo = origin_.x_;
1117 CursorSlice rowSlice(const_cast<InsetText &>(text_->inset()));
1118 rowSlice.pit() = row.pit();
1119 rowSlice.pos() = row.pos();
1121 // Adapt to cursor row scroll offset if applicable.
1122 if (bv_->currentRowSlice() == rowSlice)
1123 offset = bv_->horizScrollOffset();
1126 pos_type pos = row.pos();
1129 x = row.left_margin;
1130 else if (x <= row.left_margin) {
1131 pos = row.front().left_pos();
1132 x = row.left_margin;
1133 } else if (x >= row.width()) {
1134 pos = row.back().right_pos();
1137 double w = row.left_margin;
1138 Row::const_iterator cit = row.begin();
1139 Row::const_iterator cend = row.end();
1140 for ( ; cit != cend; ++cit) {
1141 if (w <= x && w + cit->full_width() > x) {
1142 int x_offset = int(x - w);
1143 pos = cit->x2pos(x_offset);
1144 x = int(x_offset + w);
1147 w += cit->full_width();
1149 if (cit == row.end()) {
1150 pos = row.back().right_pos();
1153 /** This tests for the case where the cursor is placed
1154 * just before a font direction change. See comment on
1155 * the boundary_ member in DocIterator.h to understand
1156 * how boundary helps here.
1158 else if (pos == cit->endpos
1159 && cit + 1 != row.end()
1160 && cit->isRTL() != (cit + 1)->isRTL())
1164 /** This tests for the case where the cursor is set at the end
1165 * of a row which has been broken due something else than a
1166 * separator (a display inset or a forced breaking of the
1167 * row). We know that there is a separator when the end of the
1168 * row is larger than the end of its last element.
1170 if (!row.empty() && pos == row.back().endpos
1171 && row.back().endpos == row.endpos()) {
1172 Inset const * inset = row.back().inset;
1173 if (inset && (inset->lyxCode() == NEWLINE_CODE
1174 || inset->lyxCode() == SEPARATOR_CODE))
1175 pos = row.back().pos;
1177 boundary = row.right_boundary();
1181 //LYXERR0("getPosNearX ==> pos=" << pos << ", boundary=" << boundary);
1187 pos_type TextMetrics::x2pos(pit_type pit, int row, int x) const
1189 // We play safe and use parMetrics(pit) to make sure the
1190 // ParagraphMetrics will be redone and OK to use if needed.
1191 // Otherwise we would use an empty ParagraphMetrics in
1192 // upDownInText() while in selection mode.
1193 ParagraphMetrics const & pm = parMetrics(pit);
1195 LBUFERR(row < int(pm.rows().size()));
1197 Row const & r = pm.rows()[row];
1198 return getPosNearX(r, x, bound);
1202 void TextMetrics::newParMetricsDown()
1204 pair<pit_type, ParagraphMetrics> const & last = *par_metrics_.rbegin();
1205 pit_type const pit = last.first + 1;
1206 if (pit == int(text_->paragraphs().size()))
1209 // do it and update its position.
1211 par_metrics_[pit].setPosition(last.second.position()
1212 + last.second.descent() + par_metrics_[pit].ascent());
1216 void TextMetrics::newParMetricsUp()
1218 pair<pit_type, ParagraphMetrics> const & first = *par_metrics_.begin();
1219 if (first.first == 0)
1222 pit_type const pit = first.first - 1;
1223 // do it and update its position.
1225 par_metrics_[pit].setPosition(first.second.position()
1226 - first.second.ascent() - par_metrics_[pit].descent());
1229 // y is screen coordinate
1230 pit_type TextMetrics::getPitNearY(int y)
1232 LASSERT(!text_->paragraphs().empty(), return -1);
1233 LASSERT(!par_metrics_.empty(), return -1);
1234 LYXERR(Debug::DEBUG, "y: " << y << " cache size: " << par_metrics_.size());
1236 // look for highest numbered paragraph with y coordinate less than given y
1239 ParMetricsCache::const_iterator it = par_metrics_.begin();
1240 ParMetricsCache::const_iterator et = par_metrics_.end();
1241 ParMetricsCache::const_iterator last = et;
1244 ParagraphMetrics const & pm = it->second;
1246 if (y < it->second.position() - int(pm.ascent())) {
1247 // We are looking for a position that is before the first paragraph in
1248 // the cache (which is in priciple off-screen, that is before the
1251 // We are already at the first paragraph in the inset.
1253 // OK, this is the paragraph we are looking for.
1254 pit = it->first - 1;
1259 ParagraphMetrics const & pm_last = par_metrics_[last->first];
1261 if (y >= last->second.position() + int(pm_last.descent())) {
1262 // We are looking for a position that is after the last paragraph in
1263 // the cache (which is in priciple off-screen), that is before the
1265 pit = last->first + 1;
1266 if (pit == int(text_->paragraphs().size()))
1267 // We are already at the last paragraph in the inset.
1269 // OK, this is the paragraph we are looking for.
1270 newParMetricsDown();
1274 for (; it != et; ++it) {
1275 LYXERR(Debug::DEBUG, "examining: pit: " << it->first
1276 << " y: " << it->second.position());
1278 ParagraphMetrics const & pm = par_metrics_[it->first];
1280 if (it->first >= pit && int(it->second.position()) - int(pm.ascent()) <= y) {
1282 yy = it->second.position();
1286 LYXERR(Debug::DEBUG, "found best y: " << yy << " for pit: " << pit);
1292 Row const & TextMetrics::getPitAndRowNearY(int & y, pit_type & pit,
1293 bool assert_in_view, bool up)
1295 ParagraphMetrics const & pm = par_metrics_[pit];
1297 int yy = pm.position() - pm.ascent();
1298 LBUFERR(!pm.rows().empty());
1299 RowList::const_iterator rit = pm.rows().begin();
1300 RowList::const_iterator rlast = pm.rows().end();
1302 for (; rit != rlast; yy += rit->height(), ++rit)
1303 if (yy + rit->height() > y)
1306 if (assert_in_view) {
1307 if (!up && yy + rit->height() > y) {
1308 if (rit != pm.rows().begin()) {
1311 } else if (pit != 0) {
1314 ParagraphMetrics const & pm2 = par_metrics_[pit];
1315 rit = pm2.rows().end();
1319 } else if (up && yy != y) {
1321 y = yy + rit->height();
1323 } else if (pit < int(text_->paragraphs().size()) - 1) {
1325 newParMetricsDown();
1326 ParagraphMetrics const & pm2 = par_metrics_[pit];
1327 rit = pm2.rows().begin();
1336 // x,y are absolute screen coordinates
1337 // sets cursor recursively descending into nested editable insets
1338 Inset * TextMetrics::editXY(Cursor & cur, int x, int y,
1339 bool assert_in_view, bool up)
1341 if (lyxerr.debugging(Debug::WORKAREA)) {
1342 LYXERR0("TextMetrics::editXY(cur, " << x << ", " << y << ")");
1343 cur.bv().coordCache().dump();
1345 pit_type pit = getPitNearY(y);
1346 LASSERT(pit != -1, return 0);
1348 int yy = y; // is modified by getPitAndRowNearY
1349 Row const & row = getPitAndRowNearY(yy, pit, assert_in_view, up);
1353 // Do we cover an inset?
1354 InsetList::InsetTable * it = checkInsetHit(pit, x, yy);
1357 // No inset, set position in the text
1358 bool bound = false; // is modified by getPosNearX
1359 int xx = x; // is modified by getPosNearX
1360 cur.pos() = getPosNearX(row, xx, bound);
1361 cur.boundary(bound);
1362 cur.setCurrentFont();
1367 Inset * inset = it->inset;
1368 //lyxerr << "inset " << inset << " hit at x: " << x << " y: " << y << endl;
1370 // Set position in front of inset
1371 cur.pos() = it->pos;
1372 cur.boundary(false);
1375 // Try to descend recursively inside the inset.
1376 Inset * edited = inset->editXY(cur, x, yy);
1377 if (edited == inset && cur.pos() == it->pos) {
1378 // non-editable inset, set cursor after the inset if x is
1379 // nearer to that position (bug 9628)
1380 CoordCache::Insets const & insetCache = bv_->coordCache().getInsets();
1381 Dimension const & dim = insetCache.dim(inset);
1382 Point p = insetCache.xy(inset);
1383 bool const is_rtl = text_->isRTL(text_->getPar(pit));
1385 // "in front of" == "right of"
1386 if (abs(p.x_ - x) < abs(p.x_ + dim.wid - x))
1389 // "in front of" == "left of"
1390 if (abs(p.x_ + dim.wid - x) < abs(p.x_ - x))
1395 if (cur.top().text() == text_)
1396 cur.setCurrentFont();
1401 void TextMetrics::setCursorFromCoordinates(Cursor & cur, int const x, int const y)
1403 LASSERT(text_ == cur.text(), return);
1404 pit_type const pit = getPitNearY(y);
1405 LASSERT(pit != -1, return);
1407 ParagraphMetrics const & pm = par_metrics_[pit];
1409 int yy = pm.position() - pm.ascent();
1410 LYXERR(Debug::DEBUG, "x: " << x << " y: " << y <<
1411 " pit: " << pit << " yy: " << yy);
1414 LBUFERR(pm.rows().size());
1415 for (; r < int(pm.rows().size()) - 1; ++r) {
1416 Row const & row = pm.rows()[r];
1417 if (int(yy + row.height()) > y)
1422 Row const & row = pm.rows()[r];
1424 LYXERR(Debug::DEBUG, "row " << r << " from pos: " << row.pos());
1428 pos_type const pos = getPosNearX(row, xx, bound);
1430 LYXERR(Debug::DEBUG, "setting cursor pit: " << pit << " pos: " << pos);
1432 text_->setCursor(cur, pit, pos, true, bound);
1433 // remember new position.
1438 //takes screen x,y coordinates
1439 InsetList::InsetTable * TextMetrics::checkInsetHit(pit_type pit, int x, int y)
1441 Paragraph const & par = text_->paragraphs()[pit];
1442 CoordCache::Insets const & insetCache = bv_->coordCache().getInsets();
1444 LYXERR(Debug::DEBUG, "x: " << x << " y: " << y << " pit: " << pit);
1446 InsetList::const_iterator iit = par.insetList().begin();
1447 InsetList::const_iterator iend = par.insetList().end();
1448 for (; iit != iend; ++iit) {
1449 Inset * inset = iit->inset;
1451 LYXERR(Debug::DEBUG, "examining inset " << inset);
1453 if (!insetCache.has(inset)) {
1454 LYXERR(Debug::DEBUG, "inset has no cached position");
1458 Dimension const & dim = insetCache.dim(inset);
1459 Point p = insetCache.xy(inset);
1461 LYXERR(Debug::DEBUG, "xo: " << p.x_ << "..." << p.x_ + dim.wid
1462 << " yo: " << p.y_ - dim.asc << "..." << p.y_ + dim.des);
1464 if (x >= p.x_ && x <= p.x_ + dim.wid
1465 && y >= p.y_ - dim.asc && y <= p.y_ + dim.des) {
1466 LYXERR(Debug::DEBUG, "Hit inset: " << inset);
1467 return const_cast<InsetList::InsetTable *>(&(*iit));
1471 LYXERR(Debug::DEBUG, "No inset hit. ");
1476 //takes screen x,y coordinates
1477 Inset * TextMetrics::checkInsetHit(int x, int y)
1479 pit_type const pit = getPitNearY(y);
1480 LASSERT(pit != -1, return 0);
1481 InsetList::InsetTable * it = checkInsetHit(pit, x, y);
1490 Row::const_iterator const
1491 TextMetrics::findRowElement(Row const & row, pos_type const pos,
1492 bool const boundary, double & x) const
1495 * When boundary is true, position i is in the row element (pos, endpos)
1498 * whereas, when boundary is false, the test is
1500 * The correction below allows to handle both cases.
1502 int const boundary_corr = (boundary && pos) ? -1 : 0;
1504 x = row.left_margin;
1506 /** Early return in trivial cases
1507 * 1) the row is empty
1508 * 2) the position is the left-most position of the row; there
1509 * is a quirk here however: if the first element is virtual
1510 * (end-of-par marker for example), then we have to look
1514 || (pos == row.begin()->left_pos() && !boundary
1515 && !row.begin()->isVirtual()))
1518 Row::const_iterator cit = row.begin();
1519 for ( ; cit != row.end() ; ++cit) {
1520 /** Look whether the cursor is inside the element's
1521 * span. Note that it is necessary to take the
1522 * boundary into account, and to accept virtual
1523 * elements, which have pos == endpos.
1525 if (pos + boundary_corr >= cit->pos
1526 && (pos + boundary_corr < cit->endpos || cit->isVirtual())) {
1527 x += cit->pos2x(pos);
1530 x += cit->full_width();
1533 if (cit == row.end())
1540 int TextMetrics::cursorX(CursorSlice const & sl,
1541 bool boundary) const
1543 LASSERT(sl.text() == text_, return 0);
1545 ParagraphMetrics const & pm = par_metrics_[sl.pit()];
1546 if (pm.rows().empty())
1548 Row const & row = pm.getRow(sl.pos(), boundary);
1549 pos_type const pos = sl.pos();
1552 findRowElement(row, pos, boundary, x);
1558 int TextMetrics::cursorY(CursorSlice const & sl, bool boundary) const
1560 //lyxerr << "TextMetrics::cursorY: boundary: " << boundary << endl;
1561 ParagraphMetrics const & pm = par_metrics_[sl.pit()];
1562 if (pm.rows().empty())
1566 h -= par_metrics_[0].rows()[0].ascent();
1567 for (pit_type pit = 0; pit < sl.pit(); ++pit) {
1568 h += par_metrics_[pit].height();
1571 if (pos && boundary)
1573 size_t const rend = pm.pos2row(pos);
1574 for (size_t rit = 0; rit != rend; ++rit)
1575 h += pm.rows()[rit].height();
1576 h += pm.rows()[rend].ascent();
1581 // the cursor set functions have a special mechanism. When they
1582 // realize you left an empty paragraph, they will delete it.
1584 bool TextMetrics::cursorHome(Cursor & cur)
1586 LASSERT(text_ == cur.text(), return false);
1587 ParagraphMetrics const & pm = par_metrics_[cur.pit()];
1588 Row const & row = pm.getRow(cur.pos(),cur.boundary());
1589 return text_->setCursor(cur, cur.pit(), row.pos());
1593 bool TextMetrics::cursorEnd(Cursor & cur)
1595 LASSERT(text_ == cur.text(), return false);
1596 // if not on the last row of the par, put the cursor before
1597 // the final space exept if I have a spanning inset or one string
1598 // is so long that we force a break.
1599 pos_type end = cur.textRow().endpos();
1601 // empty text, end-1 is no valid position
1603 bool boundary = false;
1604 if (end != cur.lastpos()) {
1605 if (!cur.paragraph().isLineSeparator(end-1)
1606 && !cur.paragraph().isNewline(end-1)
1607 && !cur.paragraph().isEnvSeparator(end-1))
1611 } else if (cur.paragraph().isEnvSeparator(end-1))
1613 return text_->setCursor(cur, cur.pit(), end, true, boundary);
1617 void TextMetrics::deleteLineForward(Cursor & cur)
1619 LASSERT(text_ == cur.text(), return);
1620 if (cur.lastpos() == 0) {
1621 // Paragraph is empty, so we just go forward
1622 text_->cursorForward(cur);
1625 cur.selection(true); // to avoid deletion
1628 // What is this test for ??? (JMarc)
1629 if (!cur.selection())
1630 text_->deleteWordForward(cur);
1632 cap::cutSelection(cur, true, false);
1633 cur.checkBufferStructure();
1638 bool TextMetrics::isLastRow(pit_type pit, Row const & row) const
1640 ParagraphList const & pars = text_->paragraphs();
1641 return row.endpos() >= pars[pit].size()
1642 && pit + 1 == pit_type(pars.size());
1646 bool TextMetrics::isFirstRow(pit_type pit, Row const & row) const
1648 return row.pos() == 0 && pit == 0;
1652 int TextMetrics::leftMargin(int max_width, pit_type pit) const
1654 return leftMargin(max_width, pit, text_->paragraphs()[pit].size());
1658 int TextMetrics::leftMargin(int max_width,
1659 pit_type const pit, pos_type const pos) const
1661 ParagraphList const & pars = text_->paragraphs();
1663 LASSERT(pit >= 0, return 0);
1664 LASSERT(pit < int(pars.size()), return 0);
1665 Paragraph const & par = pars[pit];
1666 LASSERT(pos >= 0, return 0);
1667 LASSERT(pos <= par.size(), return 0);
1668 Buffer const & buffer = bv_->buffer();
1669 //lyxerr << "TextMetrics::leftMargin: pit: " << pit << " pos: " << pos << endl;
1670 DocumentClass const & tclass = buffer.params().documentClass();
1671 Layout const & layout = par.layout();
1672 FontMetrics const & bfm = theFontMetrics(buffer.params().getFont());
1674 docstring parindent = layout.parindent;
1678 if (text_->isMainText())
1679 l_margin += bv_->leftMargin();
1681 l_margin += bfm.signedWidth(tclass.leftmargin());
1683 int depth = par.getDepth();
1685 // find the next level paragraph
1686 pit_type newpar = text_->outerHook(pit);
1687 if (newpar != pit_type(pars.size())) {
1688 if (pars[newpar].layout().isEnvironment()) {
1689 int nestmargin = depth * nestMargin();
1690 if (text_->isMainText())
1691 nestmargin += changebarMargin();
1692 l_margin = max(leftMargin(max_width, newpar), nestmargin);
1693 // Remove the parindent that has been added
1694 // if the paragraph was empty.
1695 if (pars[newpar].empty() &&
1696 buffer.params().paragraph_separation ==
1697 BufferParams::ParagraphIndentSeparation) {
1698 docstring pi = pars[newpar].layout().parindent;
1699 l_margin -= bfm.signedWidth(pi);
1702 if (tclass.isDefaultLayout(par.layout())
1703 || tclass.isPlainLayout(par.layout())) {
1704 if (pars[newpar].params().noindent())
1707 parindent = pars[newpar].layout().parindent;
1712 // This happens after sections or environments in standard classes.
1713 // We have to check the previous layout at same depth.
1714 if (buffer.params().paragraph_separation ==
1715 BufferParams::ParagraphSkipSeparation)
1717 else if (pit > 0 && pars[pit - 1].getDepth() >= par.getDepth()) {
1718 pit_type prev = text_->depthHook(pit, par.getDepth());
1719 if (par.layout() == pars[prev].layout()) {
1721 && pars[pit - 1].layout().nextnoindent)
1723 } else if (pars[prev].layout().nextnoindent)
1727 FontInfo const labelfont = text_->labelFont(par);
1728 FontMetrics const & lfm = theFontMetrics(labelfont);
1730 switch (layout.margintype) {
1731 case MARGIN_DYNAMIC:
1732 if (!layout.leftmargin.empty()) {
1733 l_margin += bfm.signedWidth(layout.leftmargin);
1735 if (!par.labelString().empty()) {
1736 l_margin += lfm.signedWidth(layout.labelindent);
1737 l_margin += lfm.width(par.labelString());
1738 l_margin += lfm.width(layout.labelsep);
1742 case MARGIN_MANUAL: {
1743 l_margin += lfm.signedWidth(layout.labelindent);
1744 // The width of an empty par, even with manual label, should be 0
1745 if (!par.empty() && pos >= par.beginOfBody()) {
1746 if (!par.getLabelWidthString().empty()) {
1747 docstring labstr = par.getLabelWidthString();
1748 l_margin += lfm.width(labstr);
1749 l_margin += lfm.width(layout.labelsep);
1755 case MARGIN_STATIC: {
1756 l_margin += bfm.signedWidth(layout.leftmargin) * 4
1757 / (par.getDepth() + 4);
1761 case MARGIN_FIRST_DYNAMIC:
1762 if (layout.labeltype == LABEL_MANUAL) {
1763 // if we are at position 0, we are never in the body
1764 if (pos > 0 && pos >= par.beginOfBody())
1765 l_margin += lfm.signedWidth(layout.leftmargin);
1767 l_margin += lfm.signedWidth(layout.labelindent);
1769 // Special case to fix problems with
1771 || (layout.labeltype == LABEL_STATIC
1772 && layout.latextype == LATEX_ENVIRONMENT
1773 && !text_->isFirstInSequence(pit))) {
1774 l_margin += lfm.signedWidth(layout.leftmargin);
1775 } else if (!layout.labelIsAbove()) {
1776 l_margin += lfm.signedWidth(layout.labelindent);
1777 l_margin += lfm.width(layout.labelsep);
1778 l_margin += lfm.width(par.labelString());
1782 case MARGIN_RIGHT_ADDRESS_BOX: {
1784 // The left margin depends on the widest row in this paragraph.
1785 // This code is wrong because it depends on the rows, but at the
1786 // same time this function is used in redoParagraph to construct
1788 ParagraphMetrics const & pm = par_metrics_[pit];
1789 RowList::const_iterator rit = pm.rows().begin();
1790 RowList::const_iterator end = pm.rows().end();
1791 int minfill = max_width;
1792 for ( ; rit != end; ++rit)
1793 if (rit->fill() < minfill)
1794 minfill = rit->fill();
1795 l_margin += bfm.signedWidth(layout.leftmargin);
1796 l_margin += minfill;
1798 // also wrong, but much shorter.
1799 l_margin += max_width / 2;
1804 if (!par.params().leftIndent().zero())
1805 l_margin += par.params().leftIndent().inPixels(max_width, lfm.em());
1809 if (par.params().align() == LYX_ALIGN_LAYOUT)
1810 align = layout.align;
1812 align = par.params().align();
1814 // set the correct parindent
1816 && (layout.labeltype == LABEL_NO_LABEL
1817 || layout.labeltype == LABEL_ABOVE
1818 || layout.labeltype == LABEL_CENTERED
1819 || (layout.labeltype == LABEL_STATIC
1820 && layout.latextype == LATEX_ENVIRONMENT
1821 && !text_->isFirstInSequence(pit)))
1822 && (align == LYX_ALIGN_BLOCK || align == LYX_ALIGN_LEFT)
1823 && !par.params().noindent()
1824 // in some insets, paragraphs are never indented
1825 && !text_->inset().neverIndent()
1826 // display style insets are always centered, omit indentation
1829 && par.getInset(pos)->display())
1830 && (!(tclass.isDefaultLayout(par.layout())
1831 || tclass.isPlainLayout(par.layout()))
1832 || buffer.params().paragraph_separation
1833 == BufferParams::ParagraphIndentSeparation)) {
1834 // use the parindent of the layout when the
1835 // default indentation is used otherwise use
1836 // the indentation set in the document
1838 if (buffer.params().getIndentation().asLyXCommand() == "default")
1839 l_margin += bfm.signedWidth(parindent);
1841 l_margin += buffer.params().getIndentation().inPixels(*bv_);
1848 void TextMetrics::draw(PainterInfo & pi, int x, int y) const
1850 if (par_metrics_.empty())
1856 ParMetricsCache::iterator it = par_metrics_.begin();
1857 ParMetricsCache::iterator const pm_end = par_metrics_.end();
1858 y -= it->second.ascent();
1859 for (; it != pm_end; ++it) {
1860 ParagraphMetrics const & pmi = it->second;
1862 pit_type const pit = it->first;
1863 // Save the paragraph position in the cache.
1864 it->second.setPosition(y);
1865 drawParagraph(pi, pit, x, y);
1871 void TextMetrics::drawParagraph(PainterInfo & pi, pit_type const pit, int const x, int y) const
1873 BufferParams const & bparams = bv_->buffer().params();
1874 ParagraphMetrics const & pm = par_metrics_[pit];
1875 if (pm.rows().empty())
1878 bool const original_drawing_state = pi.pain.isDrawingEnabled();
1879 int const ww = bv_->workHeight();
1880 size_t const nrows = pm.rows().size();
1882 Cursor const & cur = bv_->cursor();
1883 DocIterator sel_beg = cur.selectionBegin();
1884 DocIterator sel_end = cur.selectionEnd();
1885 bool selection = cur.selection()
1886 // This is our text.
1887 && cur.text() == text_
1888 // if the anchor is outside, this is not our selection
1889 && cur.normalAnchor().text() == text_
1890 && pit >= sel_beg.pit() && pit <= sel_end.pit();
1892 // We store the begin and end pos of the selection relative to this par
1893 DocIterator sel_beg_par = cur.selectionBegin();
1894 DocIterator sel_end_par = cur.selectionEnd();
1896 // We care only about visible selection.
1898 if (pit != sel_beg.pit()) {
1899 sel_beg_par.pit() = pit;
1900 sel_beg_par.pos() = 0;
1902 if (pit != sel_end.pit()) {
1903 sel_end_par.pit() = pit;
1904 sel_end_par.pos() = sel_end_par.lastpos();
1908 for (size_t i = 0; i != nrows; ++i) {
1910 Row const & row = pm.rows()[i];
1915 CursorSlice rowSlice(const_cast<InsetText &>(text_->inset()));
1916 rowSlice.pit() = pit;
1917 rowSlice.pos() = row.pos();
1919 bool const inside = (y + row.descent() >= 0
1920 && y - row.ascent() < ww);
1922 // Adapt to cursor row scroll offset if applicable.
1923 if (bv_->currentRowSlice() == rowSlice)
1924 row_x -= bv_->horizScrollOffset();
1926 // It is not needed to draw on screen if we are not inside.
1927 pi.pain.setDrawingEnabled(inside && original_drawing_state);
1929 RowPainter rp(pi, *text_, pit, row, row_x, y);
1932 row.setSelectionAndMargins(sel_beg_par, sel_end_par);
1934 row.setSelection(-1, -1);
1936 // The row knows nothing about the paragraph, so we have to check
1937 // whether this row is the first or last and update the margins.
1938 if (row.selection()) {
1939 if (row.sel_beg == 0)
1940 row.begin_margin_sel = sel_beg.pit() < pit;
1941 if (row.sel_end == sel_end_par.lastpos())
1942 row.end_margin_sel = sel_end.pit() > pit;
1945 // Row signature; has row changed since last paint?
1946 if (pi.pain.isDrawingEnabled())
1947 row.setCrc(pm.computeRowSignature(row, bparams));
1948 bool row_has_changed = row.changed()
1949 || rowSlice == bv_->lastRowSlice();
1951 // Take this opportunity to spellcheck the row contents.
1952 if (row_has_changed && pi.do_spellcheck && lyxrc.spellcheck_continuously) {
1953 text_->getPar(pit).spellCheck();
1956 // Don't paint the row if a full repaint has not been requested
1957 // and if it has not changed.
1958 if (!pi.full_repaint && !row_has_changed) {
1959 // Paint only the insets if the text itself is
1961 rp.paintOnlyInsets();
1966 // Clear background of this row if paragraph background was not
1967 // already cleared because of a full repaint.
1968 if (!pi.full_repaint && row_has_changed) {
1969 LYXERR(Debug::PAINTING, "Clear rect@("
1970 << max(row_x, 0) << ", " << y - row.ascent() << ")="
1971 << width() << " x " << row.height());
1972 pi.pain.fillRectangle(max(row_x, 0), y - row.ascent(),
1973 width(), row.height(), pi.background_color);
1976 // Instrumentation for testing row cache (see also
1978 if (lyxerr.debugging(Debug::PAINTING) && inside
1979 && (row.selection() || pi.full_repaint || row_has_changed)) {
1980 string const foreword = text_->isMainText() ?
1981 "main text redraw " : "inset text redraw: ";
1982 LYXERR(Debug::PAINTING, foreword << "pit=" << pit << " row=" << i
1983 << " row_selection=" << row.selection()
1984 << " full_repaint=" << pi.full_repaint
1985 << " row_has_changed=" << row_has_changed
1986 << " drawingEnabled=" << pi.pain.isDrawingEnabled());
1989 // Backup full_repaint status and force full repaint
1990 // for inner insets as the Row has been cleared out.
1991 bool tmp = pi.full_repaint;
1992 pi.full_repaint = true;
1994 rp.paintSelection();
1997 rp.paintChangeBar();
1998 bool const is_rtl = text_->isRTL(text_->getPar(pit));
1999 if (i == 0 && !is_rtl)
2001 if (i == nrows - 1 && is_rtl)
2004 if (i == nrows - 1 && !is_rtl)
2006 if (i == 0 && is_rtl)
2008 rp.paintTooLargeMarks(row_x + row.left_x() < 0,
2009 row_x + row.right_x() > bv_->workWidth());
2012 // Restore full_repaint status.
2013 pi.full_repaint = tmp;
2015 // Re-enable screen drawing for future use of the painter.
2016 pi.pain.setDrawingEnabled(original_drawing_state);
2018 //LYXERR(Debug::PAINTING, ".");
2022 void TextMetrics::completionPosAndDim(Cursor const & cur, int & x, int & y,
2023 Dimension & dim) const
2025 Cursor const & bvcur = cur.bv().cursor();
2027 // get word in front of cursor
2028 docstring word = text_->previousWord(bvcur.top());
2029 DocIterator wordStart = bvcur;
2030 wordStart.pos() -= word.length();
2032 // get position on screen of the word start and end
2033 //FIXME: Is it necessary to explicitly set this to false?
2034 wordStart.boundary(false);
2035 Point lxy = cur.bv().getPos(wordStart);
2036 Point rxy = cur.bv().getPos(bvcur);
2038 // calculate dimensions of the word
2040 row.pos(wordStart.pos());
2041 row.endpos(bvcur.pos());
2042 setRowHeight(row, bvcur.pit(), false);
2043 dim = row.dimension();
2044 dim.wid = abs(rxy.x_ - lxy.x_);
2046 // calculate position of word
2048 x = min(rxy.x_, lxy.x_);
2050 //lyxerr << "wid=" << dim.width() << " x=" << x << " y=" << y << " lxy.x_=" << lxy.x_ << " rxy.x_=" << rxy.x_ << " word=" << word << std::endl;
2051 //lyxerr << " wordstart=" << wordStart << " bvcur=" << bvcur << " cur=" << cur << std::endl;
2054 int defaultRowHeight()
2056 return int(theFontMetrics(sane_font).maxHeight() * 1.2);