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"
59 using frontend::FontMetrics;
64 int numberOfLabelHfills(Paragraph const & par, Row const & row)
66 pos_type last = row.endpos() - 1;
67 pos_type first = row.pos();
69 // hfill *DO* count at the beginning of paragraphs!
71 while (first < last && par.isHfill(first))
75 last = min(last, par.beginOfBody());
77 for (pos_type p = first; p < last; ++p) {
84 // FIXME: this needs to be rewritten, probably by merging it into some
85 // code that, besides counting, sets the active status of the space
86 // inset in the row element.
87 int numberOfHfills(Row const & row, ParagraphMetrics const & pm,
88 pos_type const body_pos)
91 Row::const_iterator cit = row.begin();
92 Row::const_iterator const end = row.end();
93 for ( ; cit != end ; ++cit)
94 if (cit->pos >= body_pos
95 && cit->inset && pm.hfillExpansion(row, cit->pos))
103 /////////////////////////////////////////////////////////////////////
107 /////////////////////////////////////////////////////////////////////
110 TextMetrics::TextMetrics(BufferView * bv, Text * text)
111 : bv_(bv), text_(text)
114 max_width_ = bv_->workWidth();
115 dim_.wid = max_width_;
121 bool TextMetrics::contains(pit_type pit) const
123 return par_metrics_.find(pit) != par_metrics_.end();
127 ParagraphMetrics const & TextMetrics::parMetrics(pit_type pit) const
129 return const_cast<TextMetrics *>(this)->parMetrics(pit, true);
134 pair<pit_type, ParagraphMetrics const *> TextMetrics::first() const
136 ParMetricsCache::const_iterator it = par_metrics_.begin();
137 return make_pair(it->first, &it->second);
141 pair<pit_type, ParagraphMetrics const *> TextMetrics::last() const
143 LBUFERR(!par_metrics_.empty());
144 ParMetricsCache::const_reverse_iterator it = par_metrics_.rbegin();
145 return make_pair(it->first, &it->second);
149 ParagraphMetrics & TextMetrics::parMetrics(pit_type pit, bool redo)
151 ParMetricsCache::iterator pmc_it = par_metrics_.find(pit);
152 if (pmc_it == par_metrics_.end()) {
153 pmc_it = par_metrics_.insert(
154 make_pair(pit, ParagraphMetrics(text_->getPar(pit)))).first;
156 if (pmc_it->second.rows().empty() && redo)
158 return pmc_it->second;
162 bool TextMetrics::metrics(MetricsInfo & mi, Dimension & dim, int min_width)
164 LBUFERR(mi.base.textwidth > 0);
165 max_width_ = mi.base.textwidth;
166 // backup old dimension.
167 Dimension const old_dim = dim_;
170 dim_.wid = min_width;
171 pit_type const npar = text_->paragraphs().size();
173 // If there is more than one row, expand the text to
174 // the full allowable width.
175 dim_.wid = max_width_;
177 //lyxerr << "TextMetrics::metrics: width: " << mi.base.textwidth
178 // << " maxWidth: " << max_width_ << "\nfont: " << mi.base.font << endl;
180 bool changed = false;
182 for (pit_type pit = 0; pit != npar; ++pit) {
183 changed |= redoParagraph(pit);
184 ParagraphMetrics const & pm = par_metrics_[pit];
186 if (dim_.wid < pm.width())
187 dim_.wid = pm.width();
190 dim_.asc = par_metrics_[0].ascent();
191 dim_.des = h - dim_.asc;
192 //lyxerr << "dim_.wid " << dim_.wid << endl;
193 //lyxerr << "dim_.asc " << dim_.asc << endl;
194 //lyxerr << "dim_.des " << dim_.des << endl;
196 changed |= dim_ != old_dim;
202 int TextMetrics::rightMargin(ParagraphMetrics const & pm) const
204 return text_->isMainText() ? pm.rightMargin(*bv_) : 0;
208 int TextMetrics::rightMargin(pit_type const pit) const
210 return text_->isMainText() ? par_metrics_[pit].rightMargin(*bv_) : 0;
214 void TextMetrics::applyOuterFont(Font & font) const
216 FontInfo lf(font_.fontInfo());
217 lf.reduce(bv_->buffer().params().getFont().fontInfo());
218 font.fontInfo().realize(lf);
222 Font TextMetrics::displayFont(pit_type pit, pos_type pos) const
224 LASSERT(pos >= 0, { static Font f; return f; });
226 ParagraphList const & pars = text_->paragraphs();
227 Paragraph const & par = pars[pit];
228 Layout const & layout = par.layout();
229 Buffer const & buffer = bv_->buffer();
231 BufferParams const & params = buffer.params();
232 pos_type const body_pos = par.beginOfBody();
234 // We specialize the 95% common case:
235 if (!par.getDepth()) {
236 Font f = par.getFontSettings(params, pos);
237 if (!text_->isMainText())
239 bool lab = layout.labeltype == LABEL_MANUAL && pos < body_pos;
241 FontInfo const & lf = lab ? layout.labelfont : layout.font;
242 FontInfo rlf = lab ? layout.reslabelfont : layout.resfont;
244 // In case the default family has been customized
245 if (lf.family() == INHERIT_FAMILY)
246 rlf.setFamily(params.getFont().fontInfo().family());
247 f.fontInfo().realize(rlf);
251 // The uncommon case need not be optimized as much
252 FontInfo const & layoutfont = pos < body_pos ?
253 layout.labelfont : layout.font;
255 Font font = par.getFontSettings(params, pos);
256 font.fontInfo().realize(layoutfont);
258 if (!text_->isMainText())
259 applyOuterFont(font);
261 // Realize against environment font information
262 // NOTE: the cast to pit_type should be removed when pit_type
263 // changes to a unsigned integer.
264 if (pit < pit_type(pars.size()))
265 font.fontInfo().realize(text_->outerFont(pit).fontInfo());
267 // Realize with the fonts of lesser depth.
268 font.fontInfo().realize(params.getFont().fontInfo());
274 bool TextMetrics::isRTL(CursorSlice const & sl, bool boundary) const
280 if (boundary && sl.pos() > 0)
283 return displayFont(sl.pit(), sl.pos() + correction).isVisibleRightToLeft();
287 bool TextMetrics::isRTLBoundary(pit_type pit, pos_type pos) const
289 // no RTL boundary at paragraph start
293 Font const & left_font = displayFont(pit, pos - 1);
295 return isRTLBoundary(pit, pos, left_font);
299 // isRTLBoundary returns false on a real end-of-line boundary,
300 // because otherwise the two boundary types get mixed up.
301 // This is the whole purpose of this being in TextMetrics.
302 bool TextMetrics::isRTLBoundary(pit_type pit, pos_type pos,
303 Font const & font) const
305 if (// no RTL boundary at paragraph start
307 // if the metrics have not been calculated, then we are not
308 // on screen and can safely ignore issues about boundaries.
312 ParagraphMetrics & pm = par_metrics_[pit];
313 // no RTL boundary in empty paragraph
314 if (pm.rows().empty())
317 pos_type endpos = pm.getRow(pos - 1, false).endpos();
318 pos_type startpos = pm.getRow(pos, false).pos();
319 // no RTL boundary at line start:
320 // abc\n -> toggle to RTL -> abc\n (and not: abc\n|
322 if (pos == startpos && pos == endpos) // start of cur row, end of prev row
325 Paragraph const & par = text_->getPar(pit);
326 // no RTL boundary at line break:
327 // abc|\n -> move right -> abc\n (and not: abc\n|
329 if (startpos == pos && endpos == pos && endpos != par.size()
330 && (par.isNewline(pos - 1)
331 || par.isEnvSeparator(pos - 1)
332 || par.isLineSeparator(pos - 1)
333 || par.isSeparator(pos - 1)))
336 bool left = font.isVisibleRightToLeft();
338 if (pos == par.size())
339 right = par.isRTL(bv_->buffer().params());
341 right = displayFont(pit, pos).isVisibleRightToLeft();
343 return left != right;
347 bool TextMetrics::redoParagraph(pit_type const pit)
349 Paragraph & par = text_->getPar(pit);
350 // IMPORTANT NOTE: We pass 'false' explicitly in order to not call
351 // redoParagraph() recursively inside parMetrics.
352 Dimension old_dim = parMetrics(pit, false).dim();
353 ParagraphMetrics & pm = par_metrics_[pit];
356 Buffer & buffer = bv_->buffer();
357 bool changed = false;
359 // Check whether there are InsetBibItems that need fixing
360 // FIXME: This check ought to be done somewhere else. It is the reason
361 // why text_ is not const. But then, where else to do it?
362 // Well, how can you end up with either (a) a biblio environment that
363 // has no InsetBibitem or (b) a biblio environment with more than one
364 // InsetBibitem? I think the answer is: when paragraphs are merged;
365 // when layout is set; when material is pasted.
366 if (par.brokenBiblio()) {
367 Cursor & cur = const_cast<Cursor &>(bv_->cursor());
368 // In some cases, we do not know how to record undo
369 if (&cur.inset() == &text_->inset())
370 cur.recordUndo(pit, pit);
372 int const moveCursor = par.fixBiblio(buffer);
374 // Is it necessary to update the cursor?
375 if (&cur.inset() == &text_->inset() && cur.pit() == pit) {
378 else if (moveCursor < 0 && cur.pos() >= -moveCursor)
383 // Optimisation: this is used in the next two loops
384 // so better to calculate that once here.
385 int const right_margin = rightMargin(pm);
387 // iterator pointing to paragraph to resolve macros
388 DocIterator parPos = text_->macrocontextPosition();
392 LYXERR(Debug::INFO, "MacroContext not initialised!"
393 << " Going through the buffer again and hope"
394 << " the context is better then.");
395 // FIXME audit updateBuffer calls
396 // This should not be here, but it is not clear yet where else it
398 bv_->buffer().updateBuffer();
399 parPos = text_->macrocontextPosition();
400 LBUFERR(!parPos.empty());
405 par.setBeginOfBody();
406 Font const bufferfont = buffer.params().getFont();
407 CoordCache::Insets & insetCache = bv_->coordCache().insets();
408 InsetList::const_iterator ii = par.insetList().begin();
409 InsetList::const_iterator iend = par.insetList().end();
410 for (; ii != iend; ++ii) {
411 // FIXME Doesn't this HAVE to be non-empty?
412 // position already initialized?
413 if (!parPos.empty()) {
414 parPos.pos() = ii->pos;
416 // A macro template would normally not be visible
417 // by itself. But the tex macro semantics allow
418 // recursion, so we artifically take the context
419 // after the macro template to simulate this.
420 if (ii->inset->lyxCode() == MATHMACRO_CODE)
424 // do the metric calculation
426 int const w = max_width_ - leftMargin(max_width_, pit, ii->pos)
428 Font const & font = ii->inset->inheritFont() ?
429 displayFont(pit, ii->pos) : bufferfont;
430 MacroContext mc(&buffer, parPos);
431 MetricsInfo mi(bv_, font.fontInfo(), w, mc);
432 ii->inset->metrics(mi, dim);
433 if (!insetCache.has(ii->inset) || insetCache.dim(ii->inset) != dim) {
434 insetCache.add(ii->inset, dim);
440 size_t row_index = 0;
441 bool need_new_row = false;
442 // maximum pixel width of a row
444 if (row_index == pm.rows().size())
445 pm.rows().push_back(Row());
446 Row & row = pm.rows()[row_index];
450 need_new_row = breakRow(row, right_margin);
452 row.setChanged(false);
453 if (row_index || row.endpos() < par.size()
454 || (row.right_boundary() && par.inInset().lyxCode() != CELL_CODE)) {
455 /* If there is more than one row or the row has been
456 * broken by a display inset or a newline, expand the text
457 * to the full allowable width. This setting here is
458 * needed for the computeRowMetrics() below. In the case
459 * of a display inset, we do nothing when inside a table
460 * cell, because the tabular code is not prepared for
461 * that, and it triggers when using a caption in a
462 * longtable (see bugs #9945 and #9757).
464 if (dim_.wid < max_width_)
465 dim_.wid = max_width_;
467 int const max_row_width = max(dim_.wid, row.width());
468 computeRowMetrics(row, max_row_width);
469 first = row.endpos();
472 pm.dim().wid = max(pm.dim().wid, row.width());
473 pm.dim().des += row.height();
474 } while (first < par.size() || need_new_row);
476 if (row_index < pm.rows().size())
477 pm.rows().resize(row_index);
479 // FIXME: It might be better to move this in another method
480 // specially tailored for the main text.
481 // Top and bottom margin of the document (only at top-level)
482 if (text_->isMainText()) {
484 pm.rows().front().dimension().asc += 20;
485 /* coverity[copy_paste_error]: coverity thinks that we
486 * should update pm.dim().asc below, but all the rows
487 * heights are actually counted as part of the paragraph metric
488 * descent see loop above).
492 ParagraphList const & pars = text_->paragraphs();
493 if (pit + 1 == pit_type(pars.size())) {
494 pm.rows().back().dimension().des += 20;
499 // The space above and below the paragraph.
500 int const top = parTopSpacing(pit);
501 pm.rows().front().dimension().asc += top;
502 int const bottom = parBottomSpacing(pit);
503 pm.rows().back().dimension().des += bottom;
504 pm.dim().des += top + bottom;
506 pm.dim().asc += pm.rows()[0].ascent();
507 pm.dim().des -= pm.rows()[0].ascent();
509 changed |= old_dim.height() != pm.dim().height();
515 LyXAlignment TextMetrics::getAlign(Paragraph const & par, Row const & row) const
517 LyXAlignment align = par.getAlign();
519 // handle alignment inside tabular cells
520 Inset const & owner = text_->inset();
521 bool forced_block = false;
522 switch (owner.contentAlignment()) {
523 case LYX_ALIGN_BLOCK:
524 // In general block align is the default state, but here it is
525 // an explicit choice. Therefore it should not be overridden
529 case LYX_ALIGN_CENTER:
531 case LYX_ALIGN_RIGHT:
532 if (align == LYX_ALIGN_NONE || align == LYX_ALIGN_BLOCK)
533 align = owner.contentAlignment();
536 // unchanged (use align)
540 // Display-style insets should always be on a centered row
541 if (Inset const * inset = par.getInset(row.pos())) {
542 switch (inset->display()) {
543 case Inset::AlignLeft:
544 align = LYX_ALIGN_BLOCK;
546 case Inset::AlignCenter:
547 align = LYX_ALIGN_CENTER;
550 // unchanged (use align)
552 case Inset::AlignRight:
553 align = LYX_ALIGN_RIGHT;
558 if (align == LYX_ALIGN_BLOCK) {
559 // If this row has been broken abruptly by a display inset, or
560 // it is the end of the paragraph, or the user requested we
561 // not justify stuff, then don't stretch.
562 // A forced block alignment can only be overridden the 'no
563 // justification on screen' setting.
564 if (((row.right_boundary() || row.endpos() == par.size())
566 || !bv_->buffer().params().justification)
567 align = text_->isRTL(par) ? LYX_ALIGN_RIGHT : LYX_ALIGN_LEFT;
574 void TextMetrics::computeRowMetrics(Row & row, int width) const
579 Paragraph const & par = text_->getPar(row.pit());
581 int const w = width - row.right_margin - row.width();
582 // FIXME: put back this assertion when the crash on new doc is solved.
583 //LASSERT(w >= 0, /**/);
585 // is there a manual margin with a manual label
586 Layout const & layout = par.layout();
589 if (layout.margintype == MARGIN_MANUAL
590 && layout.labeltype == LABEL_MANUAL) {
591 /// We might have real hfills in the label part
592 nlh = numberOfLabelHfills(par, row);
594 // A manual label par (e.g. List) has an auto-hfill
595 // between the label text and the body of the
597 // But we don't want to do this auto hfill if the par
602 if (nlh && !par.getLabelWidthString().empty())
603 row.label_hfill = labelFill(row) / double(nlh);
606 // are there any hfills in the row?
607 ParagraphMetrics & pm = par_metrics_[row.pit()];
608 int nh = numberOfHfills(row, pm, par.beginOfBody());
612 // We don't have to look at the alignment if the row is already
613 // larger then the permitted width as then we force the
614 // LEFT_ALIGN'edness!
615 if (int(row.width()) >= max_width_)
619 // Common case : there is no hfill, and the alignment will be
621 switch (getAlign(par, row)) {
622 case LYX_ALIGN_BLOCK:
623 // Expand expanding characters by a total of w
624 if (!row.setExtraWidth(w) && text_->isRTL(par)) {
625 // Justification failed and the text is RTL: align to the right
626 row.left_margin += w;
627 row.dimension().wid += w;
630 case LYX_ALIGN_RIGHT:
631 row.left_margin += w;
632 row.dimension().wid += w;
634 case LYX_ALIGN_CENTER:
635 row.dimension().wid += w / 2;
636 row.left_margin += w / 2;
640 case LYX_ALIGN_LAYOUT:
641 case LYX_ALIGN_SPECIAL:
642 case LYX_ALIGN_DECIMAL:
648 // Case nh > 0. There are hfill separators.
651 row.dimension().wid += w;
652 // Set size of hfill insets
653 pos_type const endpos = row.endpos();
654 pos_type body_pos = par.beginOfBody();
656 && (body_pos > endpos || !par.isLineSeparator(body_pos - 1)))
659 CoordCache::Insets & insetCache = bv_->coordCache().insets();
660 Row::iterator cit = row.begin();
661 Row::iterator const cend = row.end();
662 for ( ; cit != cend; ++cit) {
663 if (row.label_hfill && cit->endpos == body_pos
664 && cit->type == Row::SPACE)
665 cit->dim.wid -= int(row.label_hfill * (nlh - 1));
666 if (cit->inset && pm.hfillExpansion(row, cit->pos)) {
667 if (cit->pos >= body_pos) {
668 cit->dim.wid += hfill;
671 cit->dim.wid += hfill_rem;
673 cit->dim.wid += int(row.label_hfill);
674 // Cache the inset dimension.
675 insetCache.add(cit->inset, cit->dim);
681 int TextMetrics::labelFill(Row const & row) const
683 Paragraph const & par = text_->getPar(row.pit());
684 LBUFERR(par.beginOfBody() > 0 || par.isEnvSeparator(0));
687 Row::const_iterator cit = row.begin();
688 Row::const_iterator const end = row.end();
689 // iterate over elements before main body (except the last one,
690 // which is extra space).
691 while (cit!= end && cit->endpos < par.beginOfBody()) {
696 docstring const & label = par.params().labelWidthString();
700 FontMetrics const & fm
701 = theFontMetrics(text_->labelFont(par));
703 return max(0, fm.width(label) - w);
708 // Not used, see TextMetrics::breakRow
709 // this needs special handling - only newlines count as a break point
710 static pos_type addressBreakPoint(pos_type i, Paragraph const & par)
712 pos_type const end = par.size();
715 if (par.isNewline(i))
723 int TextMetrics::labelEnd(pit_type const pit) const
725 // labelEnd is only needed if the layout fills a flushleft label.
726 if (text_->getPar(pit).layout().margintype != MARGIN_MANUAL)
728 // return the beginning of the body
729 return leftMargin(max_width_, pit);
735 * Calling Text::getFont is slow. While rebreaking we scan a
736 * paragraph from left to right calling getFont for every char. This
737 * simple class address this problem by hidding an optimization trick
738 * (not mine btw -AB): the font is reused in the whole font span. The
739 * class handles transparently the "hidden" (not part of the fontlist)
740 * label font (as getFont does).
746 FontIterator(TextMetrics const & tm,
747 Paragraph const & par, pit_type pit, pos_type pos)
748 : tm_(tm), par_(par), pit_(pit), pos_(pos),
749 font_(tm.displayFont(pit, pos)),
750 endspan_(par.fontSpan(pos).last),
751 bodypos_(par.beginOfBody())
755 Font const & operator*() const { return font_; }
758 FontIterator & operator++()
761 if (pos_ < par_.size() && (pos_ > endspan_ || pos_ == bodypos_)) {
762 font_ = tm_.displayFont(pit_, pos_);
763 endspan_ = par_.fontSpan(pos_).last;
769 Font * operator->() { return &font_; }
773 TextMetrics const & tm_;
775 Paragraph const & par_;
790 /** This is the function where the hard work is done. The code here is
791 * very sensitive to small changes :) Note that part of the
792 * intelligence is also in Row::shortenIfNeeded.
794 bool TextMetrics::breakRow(Row & row, int const right_margin) const
796 Paragraph const & par = text_->getPar(row.pit());
797 pos_type const end = par.size();
798 pos_type const pos = row.pos();
799 pos_type const body_pos = par.beginOfBody();
800 bool const is_rtl = text_->isRTL(par);
801 bool need_new_row = false;
804 row.left_margin = leftMargin(max_width_, row.pit(), pos);
805 row.right_margin = right_margin;
807 swap(row.left_margin, row.right_margin);
808 // Remember that the row width takes into account the left_margin
809 // but not the right_margin.
810 row.dimension().wid = row.left_margin;
811 // the width available for the row.
812 int const width = max_width_ - row.right_margin;
814 if (pos >= end || row.width() > width) {
820 //FIXME: As long as leftMargin() is not correctly implemented for
821 // MARGIN_RIGHT_ADDRESS_BOX, we should also not do this here.
822 // Otherwise, long rows will be painted off the screen.
823 if (par.layout().margintype == MARGIN_RIGHT_ADDRESS_BOX)
824 return addressBreakPoint(pos, par);
827 // check for possible inline completion
828 DocIterator const & ic_it = bv_->inlineCompletionPos();
829 pos_type ic_pos = -1;
830 if (ic_it.inTexted() && ic_it.text() == text_ && ic_it.pit() == row.pit())
831 ic_pos = ic_it.pos();
833 // Now we iterate through until we reach the right margin
834 // or the end of the par, then build a representation of the row.
836 FontIterator fi = FontIterator(*this, par, row.pit(), pos);
838 // this can happen for an empty row after a newline
841 char_type c = par.getChar(i);
842 // The most special cases are handled first.
843 if (par.isInset(i)) {
844 Inset const * ins = par.getInset(i);
845 Dimension dim = bv_->coordCache().insets().dim(ins);
846 row.add(i, ins, dim, *fi, par.lookupChange(i));
847 } else if (c == ' ' && i + 1 == body_pos) {
848 // There is a space at i, but it should not be
849 // added as a separator, because it is just
850 // before body_pos. Instead, insert some spacing to
852 FontMetrics const & fm = theFontMetrics(text_->labelFont(par));
853 // this is needed to make sure that the row width is correct
855 int const add = max(fm.width(par.layout().labelsep),
856 labelEnd(row.pit()) - row.width());
857 row.addSpace(i, add, *fi, par.lookupChange(i));
858 } else if (c == '\t')
859 row.addSpace(i, theFontMetrics(*fi).width(from_ascii(" ")),
860 *fi, par.lookupChange(i));
861 else if (c == 0x2028 || c == 0x2029) {
863 * U+2028 LINE SEPARATOR
864 * U+2029 PARAGRAPH SEPARATOR
866 * These are special unicode characters that break
867 * lines/pragraphs. Not handling them lead to trouble wrt
868 * Qt QTextLayout formatting. We add a visible character
869 * on screen so that the user can see that something is
873 // ⤶ U+2936 ARROW POINTING DOWNWARDS THEN CURVING LEFTWARDS
874 // ¶ U+00B6 PILCROW SIGN
875 char_type const screen_char = (c == 0x2028) ? 0x2936 : 0x00B6;
876 row.add(i, screen_char, *fi, par.lookupChange(i));
878 // FIXME: please someone fix the Hebrew/Arabic parenthesis mess!
879 // see also Paragraph::getUChar.
880 if (fi->language()->lang() == "hebrew") {
886 row.add(i, c, *fi, par.lookupChange(i));
889 // add inline completion width
890 // draw logically behind the previous character
891 if (ic_pos == i + 1 && !bv_->inlineCompletion().empty()) {
892 docstring const comp = bv_->inlineCompletion();
893 size_t const uniqueTo =bv_->inlineCompletionUniqueChars();
897 f.fontInfo().setColor(Color_inlinecompletion);
898 row.addVirtual(i + 1, comp.substr(0, uniqueTo), f, Change());
900 f.fontInfo().setColor(Color_nonunique_inlinecompletion);
901 row.addVirtual(i + 1, comp.substr(uniqueTo), f, Change());
904 // Handle some situations that abruptly terminate the row
906 // - Before a display inset
907 // - After a display inset
908 Inset const * inset = 0;
909 if (par.isNewline(i) || par.isEnvSeparator(i)
910 || (i + 1 < end && (inset = par.getInset(i + 1))
912 || (!row.empty() && row.back().inset
913 && row.back().inset->display())) {
914 row.right_boundary(true);
915 need_new_row = par.isNewline(i);
922 } while (i < end && row.width() <= width);
926 // End of paragraph marker
927 ParagraphList const & pars = text_->paragraphs();
928 if (lyxrc.paragraph_markers && !need_new_row
929 && i == end && size_type(row.pit() + 1) < pars.size()) {
930 // add a virtual element for the end-of-paragraph
931 // marker; it is shown on screen, but does not exist
933 Font f(text_->layoutFont(row.pit()));
934 f.fontInfo().setColor(Color_paragraphmarker);
935 BufferParams const & bparams
936 = text_->inset().buffer().params();
937 f.setLanguage(par.getParLanguage(bparams));
938 // ¶ U+00B6 PILCROW SIGN
939 row.addVirtual(end, docstring(1, char_type(0x00B6)), f, Change());
942 // if the row is too large, try to cut at last separator. In case
943 // of success, reset indication that the row was broken abruptly.
944 if (row.shortenIfNeeded(body_pos, width))
945 row.right_boundary(!row.empty() && row.back().endpos == row.endpos());
947 // make sure that the RTL elements are in reverse ordering
948 row.reverseRTL(is_rtl);
949 //LYXERR0("breakrow: row is " << row);
954 int TextMetrics::parTopSpacing(pit_type const pit) const
956 Paragraph const & par = text_->getPar(pit);
957 Layout const & layout = par.layout();
960 ParagraphList const & pars = text_->paragraphs();
961 double const dh = defaultRowHeight();
963 BufferParams const & bparams = bv_->buffer().params();
964 Inset const & inset = text_->inset();
965 // some parskips VERY EASY IMPLEMENTATION
966 if (bparams.paragraph_separation == BufferParams::ParagraphSkipSeparation
967 && !inset.getLayout().parbreakIsNewline()
968 && !par.layout().parbreak_is_newline
970 && ((layout.isParagraph() && par.getDepth() == 0)
971 || (pars[pit - 1].layout().isParagraph()
972 && pars[pit - 1].getDepth() == 0))) {
973 asc += bparams.getDefSkip().inPixels(*bv_);
976 if (par.params().startOfAppendix())
979 // special code for the top label
980 if (layout.labelIsAbove()
981 && (!layout.isParagraphGroup() || text_->isFirstInSequence(pit))
982 && !par.labelString().empty()) {
983 FontInfo labelfont = text_->labelFont(par);
984 FontMetrics const & lfm = theFontMetrics(labelfont);
985 asc += int(lfm.maxHeight() * layout.spacing.getValue()
986 * text_->spacing(par)
987 + (layout.topsep + layout.labelbottomsep) * dh);
990 // Add the layout spaces, for example before and after
991 // a section, or between the items of a itemize or enumerate
994 pit_type prev = text_->depthHook(pit, par.getDepth());
995 Paragraph const & prevpar = pars[prev];
996 double layoutasc = 0;
998 && prevpar.layout() == layout
999 && prevpar.getDepth() == par.getDepth()
1000 && prevpar.getLabelWidthString() == par.getLabelWidthString()) {
1001 layoutasc = layout.itemsep * dh;
1002 } else if (pit != 0 && layout.topsep > 0)
1003 layoutasc = layout.topsep * dh;
1005 asc += int(layoutasc * 2 / (2 + pars[pit].getDepth()));
1007 prev = text_->outerHook(pit);
1008 if (prev != pit_type(pars.size())) {
1009 asc += int(pars[prev].layout().parsep * dh);
1010 } else if (pit != 0) {
1011 Paragraph const & prevpar = pars[pit - 1];
1012 if (prevpar.getDepth() != 0 || prevpar.layout() == layout)
1013 asc += int(layout.parsep * dh);
1020 int TextMetrics::parBottomSpacing(pit_type const pit) const
1022 double layoutdesc = 0;
1023 ParagraphList const & pars = text_->paragraphs();
1024 double const dh = defaultRowHeight();
1026 // add the layout spaces, for example before and after
1027 // a section, or between the items of a itemize or enumerate
1029 pit_type nextpit = pit + 1;
1030 if (nextpit != pit_type(pars.size())) {
1031 pit_type cpit = pit;
1033 if (pars[cpit].getDepth() > pars[nextpit].getDepth()) {
1034 double usual = pars[cpit].layout().bottomsep * dh;
1036 cpit = text_->depthHook(cpit, pars[nextpit].getDepth());
1037 if (pars[cpit].layout() != pars[nextpit].layout()
1038 || pars[nextpit].getLabelWidthString() != pars[cpit].getLabelWidthString())
1039 unusual = pars[cpit].layout().bottomsep * dh;
1040 layoutdesc = max(unusual, usual);
1041 } else if (pars[cpit].getDepth() == pars[nextpit].getDepth()) {
1042 if (pars[cpit].layout() != pars[nextpit].layout()
1043 || pars[nextpit].getLabelWidthString() != pars[cpit].getLabelWidthString())
1044 layoutdesc = int(pars[cpit].layout().bottomsep * dh);
1048 return int(layoutdesc * 2 / (2 + pars[pit].getDepth()));
1052 void TextMetrics::setRowHeight(Row & row) const
1054 Paragraph const & par = text_->getPar(row.pit());
1055 Layout const & layout = par.layout();
1056 double const spacing_val = layout.spacing.getValue() * text_->spacing(par);
1058 // Initial value for ascent (useful if row is empty).
1059 Font const font = displayFont(row.pit(), row.pos());
1060 FontMetrics const & fm = theFontMetrics(font);
1061 int maxasc = int(fm.maxAscent() * spacing_val);
1062 int maxdes = int(fm.maxDescent() * spacing_val);
1064 // Find the ascent/descent of the row contents
1065 Row::const_iterator cit = row.begin();
1066 Row::const_iterator cend = row.end();
1067 for ( ; cit != cend; ++cit) {
1069 maxasc = max(maxasc, cit->dim.ascent());
1070 maxdes = max(maxdes, cit->dim.descent());
1072 FontMetrics const & fm = theFontMetrics(cit->font);
1073 maxasc = max(maxasc, int(fm.maxAscent() * spacing_val));
1074 maxdes = max(maxdes, int(fm.maxDescent() * spacing_val));
1078 // This is nicer with box insets
1082 row.dimension().asc = maxasc;
1083 row.dimension().des = maxdes;
1087 // x is an absolute screen coord
1088 // returns the column near the specified x-coordinate of the row
1089 // x is set to the real beginning of this column
1090 pos_type TextMetrics::getPosNearX(Row const & row, int & x,
1091 bool & boundary) const
1093 //LYXERR0("getPosNearX(" << x << ") row=" << row);
1094 /// For the main Text, it is possible that this pit is not
1095 /// yet in the CoordCache when moving cursor up.
1096 /// x Paragraph coordinate is always 0 for main text anyway.
1097 int const xo = origin_.x_;
1100 // Adapt to cursor row scroll offset if applicable.
1101 int const offset = bv_->horizScrollOffset(text_, row.pit(), row.pos());
1104 pos_type pos = row.pos();
1107 x = row.left_margin;
1108 else if (x <= row.left_margin) {
1109 pos = row.front().left_pos();
1110 x = row.left_margin;
1111 } else if (x >= row.width()) {
1112 pos = row.back().right_pos();
1115 double w = row.left_margin;
1116 Row::const_iterator cit = row.begin();
1117 Row::const_iterator cend = row.end();
1118 for ( ; cit != cend; ++cit) {
1119 if (w <= x && w + cit->full_width() > x) {
1120 int x_offset = int(x - w);
1121 pos = cit->x2pos(x_offset);
1122 x = int(x_offset + w);
1125 w += cit->full_width();
1127 if (cit == row.end()) {
1128 pos = row.back().right_pos();
1131 /** This tests for the case where the cursor is placed
1132 * just before a font direction change. See comment on
1133 * the boundary_ member in DocIterator.h to understand
1134 * how boundary helps here.
1136 else if (pos == cit->endpos
1137 && cit + 1 != row.end()
1138 && cit->isRTL() != (cit + 1)->isRTL())
1142 /** This tests for the case where the cursor is set at the end
1143 * of a row which has been broken due something else than a
1144 * separator (a display inset or a forced breaking of the
1145 * row). We know that there is a separator when the end of the
1146 * row is larger than the end of its last element.
1148 if (!row.empty() && pos == row.back().endpos
1149 && row.back().endpos == row.endpos()) {
1150 Inset const * inset = row.back().inset;
1151 if (inset && (inset->lyxCode() == NEWLINE_CODE
1152 || inset->lyxCode() == SEPARATOR_CODE))
1153 pos = row.back().pos;
1155 boundary = row.right_boundary();
1159 //LYXERR0("getPosNearX ==> pos=" << pos << ", boundary=" << boundary);
1165 pos_type TextMetrics::x2pos(pit_type pit, int row, int x) const
1167 // We play safe and use parMetrics(pit) to make sure the
1168 // ParagraphMetrics will be redone and OK to use if needed.
1169 // Otherwise we would use an empty ParagraphMetrics in
1170 // upDownInText() while in selection mode.
1171 ParagraphMetrics const & pm = parMetrics(pit);
1173 LBUFERR(row < int(pm.rows().size()));
1175 Row const & r = pm.rows()[row];
1176 return getPosNearX(r, x, bound);
1180 void TextMetrics::newParMetricsDown()
1182 pair<pit_type, ParagraphMetrics> const & last = *par_metrics_.rbegin();
1183 pit_type const pit = last.first + 1;
1184 if (pit == int(text_->paragraphs().size()))
1187 // do it and update its position.
1189 par_metrics_[pit].setPosition(last.second.position()
1190 + last.second.descent() + par_metrics_[pit].ascent());
1194 void TextMetrics::newParMetricsUp()
1196 pair<pit_type, ParagraphMetrics> const & first = *par_metrics_.begin();
1197 if (first.first == 0)
1200 pit_type const pit = first.first - 1;
1201 // do it and update its position.
1203 par_metrics_[pit].setPosition(first.second.position()
1204 - first.second.ascent() - par_metrics_[pit].descent());
1207 // y is screen coordinate
1208 pit_type TextMetrics::getPitNearY(int y)
1210 LASSERT(!text_->paragraphs().empty(), return -1);
1211 LASSERT(!par_metrics_.empty(), return -1);
1212 LYXERR(Debug::DEBUG, "y: " << y << " cache size: " << par_metrics_.size());
1214 // look for highest numbered paragraph with y coordinate less than given y
1217 ParMetricsCache::const_iterator it = par_metrics_.begin();
1218 ParMetricsCache::const_iterator et = par_metrics_.end();
1219 ParMetricsCache::const_iterator last = et;
1222 ParagraphMetrics const & pm = it->second;
1224 if (y < it->second.position() - int(pm.ascent())) {
1225 // We are looking for a position that is before the first paragraph in
1226 // the cache (which is in priciple off-screen, that is before the
1229 // We are already at the first paragraph in the inset.
1231 // OK, this is the paragraph we are looking for.
1232 pit = it->first - 1;
1237 ParagraphMetrics const & pm_last = par_metrics_[last->first];
1239 if (y >= last->second.position() + int(pm_last.descent())) {
1240 // We are looking for a position that is after the last paragraph in
1241 // the cache (which is in priciple off-screen), that is before the
1243 pit = last->first + 1;
1244 if (pit == int(text_->paragraphs().size()))
1245 // We are already at the last paragraph in the inset.
1247 // OK, this is the paragraph we are looking for.
1248 newParMetricsDown();
1252 for (; it != et; ++it) {
1253 LYXERR(Debug::DEBUG, "examining: pit: " << it->first
1254 << " y: " << it->second.position());
1256 ParagraphMetrics const & pm = par_metrics_[it->first];
1258 if (it->first >= pit && int(it->second.position()) - int(pm.ascent()) <= y) {
1260 yy = it->second.position();
1264 LYXERR(Debug::DEBUG, "found best y: " << yy << " for pit: " << pit);
1270 Row const & TextMetrics::getPitAndRowNearY(int & y, pit_type & pit,
1271 bool assert_in_view, bool up)
1273 ParagraphMetrics const & pm = par_metrics_[pit];
1275 int yy = pm.position() - pm.ascent();
1276 LBUFERR(!pm.rows().empty());
1277 RowList::const_iterator rit = pm.rows().begin();
1278 RowList::const_iterator rlast = pm.rows().end();
1280 for (; rit != rlast; yy += rit->height(), ++rit)
1281 if (yy + rit->height() > y)
1284 if (assert_in_view) {
1285 if (!up && yy + rit->height() > y) {
1286 if (rit != pm.rows().begin()) {
1289 } else if (pit != 0) {
1292 ParagraphMetrics const & pm2 = par_metrics_[pit];
1293 rit = pm2.rows().end();
1297 } else if (up && yy != y) {
1299 y = yy + rit->height();
1301 } else if (pit < int(text_->paragraphs().size()) - 1) {
1303 newParMetricsDown();
1304 ParagraphMetrics const & pm2 = par_metrics_[pit];
1305 rit = pm2.rows().begin();
1314 // x,y are absolute screen coordinates
1315 // sets cursor recursively descending into nested editable insets
1316 Inset * TextMetrics::editXY(Cursor & cur, int x, int y,
1317 bool assert_in_view, bool up)
1319 if (lyxerr.debugging(Debug::WORKAREA)) {
1320 LYXERR0("TextMetrics::editXY(cur, " << x << ", " << y << ")");
1321 cur.bv().coordCache().dump();
1323 pit_type pit = getPitNearY(y);
1324 LASSERT(pit != -1, return 0);
1326 int yy = y; // is modified by getPitAndRowNearY
1327 Row const & row = getPitAndRowNearY(yy, pit, assert_in_view, up);
1331 // Do we cover an inset?
1332 InsetList::InsetTable * it = checkInsetHit(pit, x, yy);
1335 // No inset, set position in the text
1336 bool bound = false; // is modified by getPosNearX
1337 int xx = x; // is modified by getPosNearX
1338 cur.pos() = getPosNearX(row, xx, bound);
1339 cur.boundary(bound);
1340 cur.setCurrentFont();
1345 Inset * inset = it->inset;
1346 //lyxerr << "inset " << inset << " hit at x: " << x << " y: " << y << endl;
1348 // Set position in front of inset
1349 cur.pos() = it->pos;
1350 cur.boundary(false);
1353 // Try to descend recursively inside the inset.
1354 Inset * edited = inset->editXY(cur, x, yy);
1355 if (edited == inset && cur.pos() == it->pos) {
1356 // non-editable inset, set cursor after the inset if x is
1357 // nearer to that position (bug 9628)
1358 CoordCache::Insets const & insetCache = bv_->coordCache().getInsets();
1359 Dimension const & dim = insetCache.dim(inset);
1360 Point p = insetCache.xy(inset);
1361 bool const is_rtl = text_->isRTL(text_->getPar(pit));
1363 // "in front of" == "right of"
1364 if (abs(p.x_ - x) < abs(p.x_ + dim.wid - x))
1367 // "in front of" == "left of"
1368 if (abs(p.x_ + dim.wid - x) < abs(p.x_ - x))
1373 if (cur.top().text() == text_)
1374 cur.setCurrentFont();
1379 void TextMetrics::setCursorFromCoordinates(Cursor & cur, int const x, int const y)
1381 LASSERT(text_ == cur.text(), return);
1382 pit_type const pit = getPitNearY(y);
1383 LASSERT(pit != -1, return);
1385 ParagraphMetrics const & pm = par_metrics_[pit];
1387 int yy = pm.position() - pm.ascent();
1388 LYXERR(Debug::DEBUG, "x: " << x << " y: " << y <<
1389 " pit: " << pit << " yy: " << yy);
1392 LBUFERR(pm.rows().size());
1393 for (; r < int(pm.rows().size()) - 1; ++r) {
1394 Row const & row = pm.rows()[r];
1395 if (int(yy + row.height()) > y)
1400 Row const & row = pm.rows()[r];
1402 LYXERR(Debug::DEBUG, "row " << r << " from pos: " << row.pos());
1406 pos_type const pos = getPosNearX(row, xx, bound);
1408 LYXERR(Debug::DEBUG, "setting cursor pit: " << pit << " pos: " << pos);
1410 text_->setCursor(cur, pit, pos, true, bound);
1411 // remember new position.
1416 //takes screen x,y coordinates
1417 InsetList::InsetTable * TextMetrics::checkInsetHit(pit_type pit, int x, int y)
1419 Paragraph const & par = text_->paragraphs()[pit];
1420 CoordCache::Insets const & insetCache = bv_->coordCache().getInsets();
1422 LYXERR(Debug::DEBUG, "x: " << x << " y: " << y << " pit: " << pit);
1424 InsetList::const_iterator iit = par.insetList().begin();
1425 InsetList::const_iterator iend = par.insetList().end();
1426 for (; iit != iend; ++iit) {
1427 Inset * inset = iit->inset;
1429 LYXERR(Debug::DEBUG, "examining inset " << inset);
1431 if (!insetCache.has(inset)) {
1432 LYXERR(Debug::DEBUG, "inset has no cached position");
1436 Dimension const & dim = insetCache.dim(inset);
1437 Point p = insetCache.xy(inset);
1439 LYXERR(Debug::DEBUG, "xo: " << p.x_ << "..." << p.x_ + dim.wid
1440 << " yo: " << p.y_ - dim.asc << "..." << p.y_ + dim.des);
1442 if (x >= p.x_ && x <= p.x_ + dim.wid
1443 && y >= p.y_ - dim.asc && y <= p.y_ + dim.des) {
1444 LYXERR(Debug::DEBUG, "Hit inset: " << inset);
1445 return const_cast<InsetList::InsetTable *>(&(*iit));
1449 LYXERR(Debug::DEBUG, "No inset hit. ");
1454 //takes screen x,y coordinates
1455 Inset * TextMetrics::checkInsetHit(int x, int y)
1457 pit_type const pit = getPitNearY(y);
1458 LASSERT(pit != -1, return 0);
1459 InsetList::InsetTable * it = checkInsetHit(pit, x, y);
1468 Row::const_iterator const
1469 TextMetrics::findRowElement(Row const & row, pos_type const pos,
1470 bool const boundary, double & x) const
1473 * When boundary is true, position i is in the row element (pos, endpos)
1476 * whereas, when boundary is false, the test is
1478 * The correction below allows to handle both cases.
1480 int const boundary_corr = (boundary && pos) ? -1 : 0;
1482 x = row.left_margin;
1484 /** Early return in trivial cases
1485 * 1) the row is empty
1486 * 2) the position is the left-most position of the row; there
1487 * is a quirk here however: if the first element is virtual
1488 * (end-of-par marker for example), then we have to look
1492 || (pos == row.begin()->left_pos() && !boundary
1493 && !row.begin()->isVirtual()))
1496 Row::const_iterator cit = row.begin();
1497 for ( ; cit != row.end() ; ++cit) {
1498 /** Look whether the cursor is inside the element's
1499 * span. Note that it is necessary to take the
1500 * boundary into account, and to accept virtual
1501 * elements, which have pos == endpos.
1503 if (pos + boundary_corr >= cit->pos
1504 && (pos + boundary_corr < cit->endpos || cit->isVirtual())) {
1505 x += cit->pos2x(pos);
1508 x += cit->full_width();
1511 if (cit == row.end())
1518 int TextMetrics::cursorX(CursorSlice const & sl,
1519 bool boundary) const
1521 LASSERT(sl.text() == text_, return 0);
1523 ParagraphMetrics const & pm = par_metrics_[sl.pit()];
1524 if (pm.rows().empty())
1526 Row const & row = pm.getRow(sl.pos(), boundary);
1527 pos_type const pos = sl.pos();
1530 findRowElement(row, pos, boundary, x);
1536 int TextMetrics::cursorY(CursorSlice const & sl, bool boundary) const
1538 //lyxerr << "TextMetrics::cursorY: boundary: " << boundary << endl;
1539 ParagraphMetrics const & pm = par_metrics_[sl.pit()];
1540 if (pm.rows().empty())
1544 h -= par_metrics_[0].rows()[0].ascent();
1545 for (pit_type pit = 0; pit < sl.pit(); ++pit) {
1546 h += par_metrics_[pit].height();
1549 if (pos && boundary)
1551 size_t const rend = pm.pos2row(pos);
1552 for (size_t rit = 0; rit != rend; ++rit)
1553 h += pm.rows()[rit].height();
1554 h += pm.rows()[rend].ascent();
1559 // the cursor set functions have a special mechanism. When they
1560 // realize you left an empty paragraph, they will delete it.
1562 bool TextMetrics::cursorHome(Cursor & cur)
1564 LASSERT(text_ == cur.text(), return false);
1565 ParagraphMetrics const & pm = par_metrics_[cur.pit()];
1566 Row const & row = pm.getRow(cur.pos(),cur.boundary());
1567 return text_->setCursor(cur, cur.pit(), row.pos());
1571 bool TextMetrics::cursorEnd(Cursor & cur)
1573 LASSERT(text_ == cur.text(), return false);
1574 // if not on the last row of the par, put the cursor before
1575 // the final space exept if I have a spanning inset or one string
1576 // is so long that we force a break.
1577 pos_type end = cur.textRow().endpos();
1579 // empty text, end-1 is no valid position
1581 bool boundary = false;
1582 if (end != cur.lastpos()) {
1583 if (!cur.paragraph().isLineSeparator(end-1)
1584 && !cur.paragraph().isNewline(end-1)
1585 && !cur.paragraph().isEnvSeparator(end-1))
1589 } else if (cur.paragraph().isEnvSeparator(end-1))
1591 return text_->setCursor(cur, cur.pit(), end, true, boundary);
1595 void TextMetrics::deleteLineForward(Cursor & cur)
1597 LASSERT(text_ == cur.text(), return);
1598 if (cur.lastpos() == 0) {
1599 // Paragraph is empty, so we just go forward
1600 text_->cursorForward(cur);
1603 cur.selection(true); // to avoid deletion
1606 // What is this test for ??? (JMarc)
1607 if (!cur.selection())
1608 text_->deleteWordForward(cur);
1610 cap::cutSelection(cur, true, false);
1611 cur.checkBufferStructure();
1616 bool TextMetrics::isLastRow(Row const & row) const
1618 ParagraphList const & pars = text_->paragraphs();
1619 return row.endpos() >= pars[row.pit()].size()
1620 && row.pit() + 1 == pit_type(pars.size());
1624 bool TextMetrics::isFirstRow(Row const & row) const
1626 return row.pos() == 0 && row.pit() == 0;
1630 int TextMetrics::leftMargin(int max_width, pit_type pit) const
1632 return leftMargin(max_width, pit, text_->paragraphs()[pit].size());
1636 int TextMetrics::leftMargin(int max_width,
1637 pit_type const pit, pos_type const pos) const
1639 ParagraphList const & pars = text_->paragraphs();
1641 LASSERT(pit >= 0, return 0);
1642 LASSERT(pit < int(pars.size()), return 0);
1643 Paragraph const & par = pars[pit];
1644 LASSERT(pos >= 0, return 0);
1645 LASSERT(pos <= par.size(), return 0);
1646 Buffer const & buffer = bv_->buffer();
1647 //lyxerr << "TextMetrics::leftMargin: pit: " << pit << " pos: " << pos << endl;
1648 DocumentClass const & tclass = buffer.params().documentClass();
1649 Layout const & layout = par.layout();
1650 FontMetrics const & bfm = theFontMetrics(buffer.params().getFont());
1652 docstring parindent = layout.parindent;
1656 if (text_->isMainText())
1657 l_margin += bv_->leftMargin();
1659 l_margin += bfm.signedWidth(tclass.leftmargin());
1661 int depth = par.getDepth();
1663 // find the next level paragraph
1664 pit_type newpar = text_->outerHook(pit);
1665 if (newpar != pit_type(pars.size())) {
1666 if (pars[newpar].layout().isEnvironment()) {
1667 int nestmargin = depth * nestMargin();
1668 if (text_->isMainText())
1669 nestmargin += changebarMargin();
1670 l_margin = max(leftMargin(max_width, newpar), nestmargin);
1671 // Remove the parindent that has been added
1672 // if the paragraph was empty.
1673 if (pars[newpar].empty() &&
1674 buffer.params().paragraph_separation ==
1675 BufferParams::ParagraphIndentSeparation) {
1676 docstring pi = pars[newpar].layout().parindent;
1677 l_margin -= bfm.signedWidth(pi);
1680 if (tclass.isDefaultLayout(par.layout())
1681 || tclass.isPlainLayout(par.layout())) {
1682 if (pars[newpar].params().noindent())
1685 parindent = pars[newpar].layout().parindent;
1690 // This happens after sections or environments in standard classes.
1691 // We have to check the previous layout at same depth.
1692 if (buffer.params().paragraph_separation ==
1693 BufferParams::ParagraphSkipSeparation)
1695 else if (pit > 0 && pars[pit - 1].getDepth() >= par.getDepth()) {
1696 pit_type prev = text_->depthHook(pit, par.getDepth());
1697 if (par.layout() == pars[prev].layout()) {
1699 && pars[pit - 1].layout().nextnoindent)
1701 } else if (pars[prev].layout().nextnoindent)
1705 FontInfo const labelfont = text_->labelFont(par);
1706 FontMetrics const & lfm = theFontMetrics(labelfont);
1708 switch (layout.margintype) {
1709 case MARGIN_DYNAMIC:
1710 if (!layout.leftmargin.empty()) {
1711 l_margin += bfm.signedWidth(layout.leftmargin);
1713 if (!par.labelString().empty()) {
1714 l_margin += lfm.signedWidth(layout.labelindent);
1715 l_margin += lfm.width(par.labelString());
1716 l_margin += lfm.width(layout.labelsep);
1720 case MARGIN_MANUAL: {
1721 l_margin += lfm.signedWidth(layout.labelindent);
1722 // The width of an empty par, even with manual label, should be 0
1723 if (!par.empty() && pos >= par.beginOfBody()) {
1724 if (!par.getLabelWidthString().empty()) {
1725 docstring labstr = par.getLabelWidthString();
1726 l_margin += lfm.width(labstr);
1727 l_margin += lfm.width(layout.labelsep);
1733 case MARGIN_STATIC: {
1734 l_margin += bfm.signedWidth(layout.leftmargin) * 4
1735 / (par.getDepth() + 4);
1739 case MARGIN_FIRST_DYNAMIC:
1740 if (layout.labeltype == LABEL_MANUAL) {
1741 // if we are at position 0, we are never in the body
1742 if (pos > 0 && pos >= par.beginOfBody())
1743 l_margin += lfm.signedWidth(layout.leftmargin);
1745 l_margin += lfm.signedWidth(layout.labelindent);
1747 // Special case to fix problems with
1749 || (layout.labeltype == LABEL_STATIC
1750 && layout.latextype == LATEX_ENVIRONMENT
1751 && !text_->isFirstInSequence(pit))) {
1752 l_margin += lfm.signedWidth(layout.leftmargin);
1753 } else if (!layout.labelIsAbove()) {
1754 l_margin += lfm.signedWidth(layout.labelindent);
1755 l_margin += lfm.width(layout.labelsep);
1756 l_margin += lfm.width(par.labelString());
1760 case MARGIN_RIGHT_ADDRESS_BOX: {
1762 // The left margin depends on the widest row in this paragraph.
1763 // This code is wrong because it depends on the rows, but at the
1764 // same time this function is used in redoParagraph to construct
1766 ParagraphMetrics const & pm = par_metrics_[pit];
1767 RowList::const_iterator rit = pm.rows().begin();
1768 RowList::const_iterator end = pm.rows().end();
1769 int minfill = max_width;
1770 for ( ; rit != end; ++rit)
1771 if (rit->fill() < minfill)
1772 minfill = rit->fill();
1773 l_margin += bfm.signedWidth(layout.leftmargin);
1774 l_margin += minfill;
1776 // also wrong, but much shorter.
1777 l_margin += max_width / 2;
1782 if (!par.params().leftIndent().zero())
1783 l_margin += par.params().leftIndent().inPixels(max_width, lfm.em());
1785 LyXAlignment align = par.getAlign();
1787 // set the correct parindent
1789 && (layout.labeltype == LABEL_NO_LABEL
1790 || layout.labeltype == LABEL_ABOVE
1791 || layout.labeltype == LABEL_CENTERED
1792 || (layout.labeltype == LABEL_STATIC
1793 && layout.latextype == LATEX_ENVIRONMENT
1794 && !text_->isFirstInSequence(pit)))
1795 && (align == LYX_ALIGN_BLOCK || align == LYX_ALIGN_LEFT)
1796 && !par.params().noindent()
1797 // in some insets, paragraphs are never indented
1798 && !text_->inset().neverIndent()
1799 // display style insets are always centered, omit indentation
1802 && par.getInset(pos)->display())
1803 && (!(tclass.isDefaultLayout(par.layout())
1804 || tclass.isPlainLayout(par.layout()))
1805 || buffer.params().paragraph_separation
1806 == BufferParams::ParagraphIndentSeparation)) {
1807 // use the parindent of the layout when the
1808 // default indentation is used otherwise use
1809 // the indentation set in the document
1811 if (buffer.params().getIndentation().asLyXCommand() == "default")
1812 l_margin += bfm.signedWidth(parindent);
1814 l_margin += buffer.params().getIndentation().inPixels(*bv_);
1821 void TextMetrics::draw(PainterInfo & pi, int x, int y) const
1823 if (par_metrics_.empty())
1829 ParMetricsCache::iterator it = par_metrics_.begin();
1830 ParMetricsCache::iterator const pm_end = par_metrics_.end();
1831 y -= it->second.ascent();
1832 for (; it != pm_end; ++it) {
1833 ParagraphMetrics const & pmi = it->second;
1835 pit_type const pit = it->first;
1836 // Save the paragraph position in the cache.
1837 it->second.setPosition(y);
1838 drawParagraph(pi, pit, x, y);
1844 void TextMetrics::drawParagraph(PainterInfo & pi, pit_type const pit, int const x, int y) const
1846 ParagraphMetrics const & pm = par_metrics_[pit];
1847 if (pm.rows().empty())
1849 size_t const nrows = pm.rows().size();
1851 // Use fast lane when drawing is disabled.
1852 if (!pi.pain.isDrawingEnabled()) {
1853 for (size_t i = 0; i != nrows; ++i) {
1855 Row const & row = pm.rows()[i];
1856 // Adapt to cursor row scroll offset if applicable.
1857 int row_x = x - bv_->horizScrollOffset(text_, pit, row.pos());
1861 RowPainter rp(pi, *text_, row, row_x, y);
1863 rp.paintOnlyInsets();
1869 int const ww = bv_->workHeight();
1870 Cursor const & cur = bv_->cursor();
1871 DocIterator sel_beg = cur.selectionBegin();
1872 DocIterator sel_end = cur.selectionEnd();
1873 bool selection = cur.selection()
1874 // This is our text.
1875 && cur.text() == text_
1876 // if the anchor is outside, this is not our selection
1877 && cur.normalAnchor().text() == text_
1878 && pit >= sel_beg.pit() && pit <= sel_end.pit();
1880 // We store the begin and end pos of the selection relative to this par
1881 DocIterator sel_beg_par = cur.selectionBegin();
1882 DocIterator sel_end_par = cur.selectionEnd();
1884 // We care only about visible selection.
1886 if (pit != sel_beg.pit()) {
1887 sel_beg_par.pit() = pit;
1888 sel_beg_par.pos() = 0;
1890 if (pit != sel_end.pit()) {
1891 sel_end_par.pit() = pit;
1892 sel_end_par.pos() = sel_end_par.lastpos();
1896 for (size_t i = 0; i != nrows; ++i) {
1898 Row const & row = pm.rows()[i];
1899 // Adapt to cursor row scroll offset if applicable.
1900 int row_x = x - bv_->horizScrollOffset(text_, pit, row.pos());
1904 RowPainter rp(pi, *text_, row, row_x, y);
1906 // It is not needed to draw on screen if we are not inside.
1907 bool const inside = (y + row.descent() >= 0
1908 && y - row.ascent() < ww);
1909 pi.pain.setDrawingEnabled(inside);
1911 // Paint only the insets to set inset cache correctly
1912 // FIXME: remove paintOnlyInsets when we know that positions
1913 // have already been set.
1914 rp.paintOnlyInsets();
1920 row.setSelectionAndMargins(sel_beg_par, sel_end_par);
1922 row.setSelection(-1, -1);
1924 // The row knows nothing about the paragraph, so we have to check
1925 // whether this row is the first or last and update the margins.
1926 if (row.selection()) {
1927 if (row.sel_beg == 0)
1928 row.begin_margin_sel = sel_beg.pit() < pit;
1929 if (row.sel_end == sel_end_par.lastpos())
1930 row.end_margin_sel = sel_end.pit() > pit;
1933 // Row signature; has row changed since last paint?
1934 row.setCrc(pm.computeRowSignature(row, *bv_));
1935 bool row_has_changed = row.changed()
1936 || bv_->hadHorizScrollOffset(text_, pit, row.pos());
1938 // Take this opportunity to spellcheck the row contents.
1939 if (row_has_changed && pi.do_spellcheck && lyxrc.spellcheck_continuously) {
1940 text_->getPar(pit).spellCheck();
1943 // Don't paint the row if a full repaint has not been requested
1944 // and if it has not changed.
1945 if (!pi.full_repaint && !row_has_changed) {
1946 // Paint only the insets if the text itself is
1948 rp.paintOnlyInsets();
1953 // Clear background of this row if paragraph background was not
1954 // already cleared because of a full repaint.
1955 if (!pi.full_repaint && row_has_changed) {
1956 LYXERR(Debug::PAINTING, "Clear rect@("
1957 << max(row_x, 0) << ", " << y - row.ascent() << ")="
1958 << width() << " x " << row.height());
1959 pi.pain.fillRectangle(max(row_x, 0), y - row.ascent(),
1960 width(), row.height(), pi.background_color);
1963 // Instrumentation for testing row cache (see also
1965 if (lyxerr.debugging(Debug::PAINTING)
1966 && (row.selection() || pi.full_repaint || row_has_changed)) {
1967 string const foreword = text_->isMainText() ?
1968 "main text redraw " : "inset text redraw: ";
1969 LYXERR(Debug::PAINTING, foreword << "pit=" << pit << " row=" << i
1970 << " row_selection=" << row.selection()
1971 << " full_repaint=" << pi.full_repaint
1972 << " row_has_changed=" << row_has_changed
1973 << " drawingEnabled=" << pi.pain.isDrawingEnabled());
1976 // Backup full_repaint status and force full repaint
1977 // for inner insets as the Row has been cleared out.
1978 bool tmp = pi.full_repaint;
1979 pi.full_repaint = true;
1981 rp.paintSelection();
1984 rp.paintChangeBar();
1985 bool const is_rtl = text_->isRTL(text_->getPar(pit));
1986 if (i == 0 && !is_rtl)
1988 if (i == nrows - 1 && is_rtl)
1991 if (i == nrows - 1 && !is_rtl)
1993 if (i == 0 && is_rtl)
1995 rp.paintTooLargeMarks(row_x + row.left_x() < 0,
1996 row_x + row.right_x() > bv_->workWidth());
1999 // Restore full_repaint status.
2000 pi.full_repaint = tmp;
2002 // Re-enable screen drawing for future use of the painter.
2003 pi.pain.setDrawingEnabled(true);
2005 //LYXERR(Debug::PAINTING, ".");
2009 void TextMetrics::completionPosAndDim(Cursor const & cur, int & x, int & y,
2010 Dimension & dim) const
2012 Cursor const & bvcur = cur.bv().cursor();
2014 // get word in front of cursor
2015 docstring word = text_->previousWord(bvcur.top());
2016 DocIterator wordStart = bvcur;
2017 wordStart.pos() -= word.length();
2019 // calculate dimensions of the word
2021 row.pit(bvcur.pit());
2022 row.pos(wordStart.pos());
2023 row.endpos(bvcur.pos());
2025 dim = row.dimension();
2027 // get position on screen of the word start and end
2028 //FIXME: Is it necessary to explicitly set this to false?
2029 wordStart.boundary(false);
2030 Point lxy = cur.bv().getPos(wordStart);
2031 Point rxy = cur.bv().getPos(bvcur);
2032 dim.wid = abs(rxy.x_ - lxy.x_);
2034 // calculate position of word
2036 x = min(rxy.x_, lxy.x_);
2038 //lyxerr << "wid=" << dim.width() << " x=" << x << " y=" << y << " lxy.x_=" << lxy.x_ << " rxy.x_=" << rxy.x_ << " word=" << word << std::endl;
2039 //lyxerr << " wordstart=" << wordStart << " bvcur=" << bvcur << " cur=" << cur << std::endl;
2042 int defaultRowHeight()
2044 return int(theFontMetrics(sane_font).maxHeight() * 1.2);