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 thinks that we should update pm.dim().asc
486 * below, but all the rows heights are actually counted as
487 * part of the paragraph metric descent see loop above).
489 // coverity[copy_paste_error]
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.flushed() && !forced_block)
565 || !bv_->buffer().params().justification)
566 align = row.isRTL() ? LYX_ALIGN_RIGHT : LYX_ALIGN_LEFT;
573 void TextMetrics::computeRowMetrics(Row & row, int width) const
578 Paragraph const & par = text_->getPar(row.pit());
580 int const w = width - row.right_margin - row.width();
581 // FIXME: put back this assertion when the crash on new doc is solved.
582 //LASSERT(w >= 0, /**/);
584 // is there a manual margin with a manual label
585 Layout const & layout = par.layout();
588 if (layout.margintype == MARGIN_MANUAL
589 && layout.labeltype == LABEL_MANUAL) {
590 /// We might have real hfills in the label part
591 nlh = numberOfLabelHfills(par, row);
593 // A manual label par (e.g. List) has an auto-hfill
594 // between the label text and the body of the
596 // But we don't want to do this auto hfill if the par
601 if (nlh && !par.getLabelWidthString().empty())
602 row.label_hfill = labelFill(row) / double(nlh);
605 // are there any hfills in the row?
606 ParagraphMetrics & pm = par_metrics_[row.pit()];
607 int nh = numberOfHfills(row, pm, par.beginOfBody());
611 // We don't have to look at the alignment if the row is already
612 // larger then the permitted width as then we force the
613 // LEFT_ALIGN'edness!
614 if (int(row.width()) >= max_width_)
618 // Common case : there is no hfill, and the alignment will be
620 switch (getAlign(par, row)) {
621 case LYX_ALIGN_BLOCK:
622 // Expand expanding characters by a total of w
623 if (!row.setExtraWidth(w) && row.isRTL()) {
624 // Justification failed and the text is RTL: align to the right
625 row.left_margin += w;
626 row.dimension().wid += w;
629 case LYX_ALIGN_RIGHT:
630 row.left_margin += w;
631 row.dimension().wid += w;
633 case LYX_ALIGN_CENTER:
634 row.dimension().wid += w / 2;
635 row.left_margin += w / 2;
639 case LYX_ALIGN_LAYOUT:
640 case LYX_ALIGN_SPECIAL:
641 case LYX_ALIGN_DECIMAL:
647 // Case nh > 0. There are hfill separators.
650 row.dimension().wid += w;
651 // Set size of hfill insets
652 pos_type const endpos = row.endpos();
653 pos_type body_pos = par.beginOfBody();
655 && (body_pos > endpos || !par.isLineSeparator(body_pos - 1)))
658 CoordCache::Insets & insetCache = bv_->coordCache().insets();
659 Row::iterator cit = row.begin();
660 Row::iterator const cend = row.end();
661 for ( ; cit != cend; ++cit) {
662 if (row.label_hfill && cit->endpos == body_pos
663 && cit->type == Row::SPACE)
664 cit->dim.wid -= int(row.label_hfill * (nlh - 1));
665 if (cit->inset && pm.hfillExpansion(row, cit->pos)) {
666 if (cit->pos >= body_pos) {
667 cit->dim.wid += hfill;
670 cit->dim.wid += hfill_rem;
672 cit->dim.wid += int(row.label_hfill);
673 // Cache the inset dimension.
674 insetCache.add(cit->inset, cit->dim);
680 int TextMetrics::labelFill(Row const & row) const
682 Paragraph const & par = text_->getPar(row.pit());
683 LBUFERR(par.beginOfBody() > 0 || par.isEnvSeparator(0));
686 Row::const_iterator cit = row.begin();
687 Row::const_iterator const end = row.end();
688 // iterate over elements before main body (except the last one,
689 // which is extra space).
690 while (cit!= end && cit->endpos < par.beginOfBody()) {
695 docstring const & label = par.params().labelWidthString();
699 FontMetrics const & fm
700 = theFontMetrics(text_->labelFont(par));
702 return max(0, fm.width(label) - w);
707 // Not used, see TextMetrics::breakRow
708 // this needs special handling - only newlines count as a break point
709 static pos_type addressBreakPoint(pos_type i, Paragraph const & par)
711 pos_type const end = par.size();
714 if (par.isNewline(i))
722 int TextMetrics::labelEnd(pit_type const pit) const
724 // labelEnd is only needed if the layout fills a flushleft label.
725 if (text_->getPar(pit).layout().margintype != MARGIN_MANUAL)
727 // return the beginning of the body
728 return leftMargin(max_width_, pit);
734 * Calling Text::getFont is slow. While rebreaking we scan a
735 * paragraph from left to right calling getFont for every char. This
736 * simple class address this problem by hidding an optimization trick
737 * (not mine btw -AB): the font is reused in the whole font span. The
738 * class handles transparently the "hidden" (not part of the fontlist)
739 * label font (as getFont does).
745 FontIterator(TextMetrics const & tm,
746 Paragraph const & par, pit_type pit, pos_type pos)
747 : tm_(tm), par_(par), pit_(pit), pos_(pos),
748 font_(tm.displayFont(pit, pos)),
749 endspan_(par.fontSpan(pos).last),
750 bodypos_(par.beginOfBody())
754 Font const & operator*() const { return font_; }
757 FontIterator & operator++()
760 if (pos_ < par_.size() && (pos_ > endspan_ || pos_ == bodypos_)) {
761 font_ = tm_.displayFont(pit_, pos_);
762 endspan_ = par_.fontSpan(pos_).last;
768 Font * operator->() { return &font_; }
772 TextMetrics const & tm_;
774 Paragraph const & par_;
789 /** This is the function where the hard work is done. The code here is
790 * very sensitive to small changes :) Note that part of the
791 * intelligence is also in Row::shortenIfNeeded.
793 bool TextMetrics::breakRow(Row & row, int const right_margin) const
795 Paragraph const & par = text_->getPar(row.pit());
796 pos_type const end = par.size();
797 pos_type const pos = row.pos();
798 pos_type const body_pos = par.beginOfBody();
799 bool const is_rtl = text_->isRTL(par);
800 bool need_new_row = false;
803 row.left_margin = leftMargin(max_width_, row.pit(), pos);
804 row.right_margin = right_margin;
806 swap(row.left_margin, row.right_margin);
807 // Remember that the row width takes into account the left_margin
808 // but not the right_margin.
809 row.dimension().wid = row.left_margin;
810 // the width available for the row.
811 int const width = max_width_ - row.right_margin;
813 if (pos >= end || row.width() > width) {
819 //FIXME: As long as leftMargin() is not correctly implemented for
820 // MARGIN_RIGHT_ADDRESS_BOX, we should also not do this here.
821 // Otherwise, long rows will be painted off the screen.
822 if (par.layout().margintype == MARGIN_RIGHT_ADDRESS_BOX)
823 return addressBreakPoint(pos, par);
826 // check for possible inline completion
827 DocIterator const & ic_it = bv_->inlineCompletionPos();
828 pos_type ic_pos = -1;
829 if (ic_it.inTexted() && ic_it.text() == text_ && ic_it.pit() == row.pit())
830 ic_pos = ic_it.pos();
832 // Now we iterate through until we reach the right margin
833 // or the end of the par, then build a representation of the row.
835 FontIterator fi = FontIterator(*this, par, row.pit(), pos);
837 // this can happen for an empty row after a newline
840 char_type c = par.getChar(i);
841 // The most special cases are handled first.
842 if (par.isInset(i)) {
843 Inset const * ins = par.getInset(i);
844 Dimension dim = bv_->coordCache().insets().dim(ins);
845 row.add(i, ins, dim, *fi, par.lookupChange(i));
846 } else if (c == ' ' && i + 1 == body_pos) {
847 // There is a space at i, but it should not be
848 // added as a separator, because it is just
849 // before body_pos. Instead, insert some spacing to
851 FontMetrics const & fm = theFontMetrics(text_->labelFont(par));
852 // this is needed to make sure that the row width is correct
854 int const add = max(fm.width(par.layout().labelsep),
855 labelEnd(row.pit()) - row.width());
856 row.addSpace(i, add, *fi, par.lookupChange(i));
857 } else if (c == '\t')
858 row.addSpace(i, theFontMetrics(*fi).width(from_ascii(" ")),
859 *fi, par.lookupChange(i));
860 else if (c == 0x2028 || c == 0x2029) {
862 * U+2028 LINE SEPARATOR
863 * U+2029 PARAGRAPH SEPARATOR
865 * These are special unicode characters that break
866 * lines/pragraphs. Not handling them lead to trouble wrt
867 * Qt QTextLayout formatting. We add a visible character
868 * on screen so that the user can see that something is
872 // ⤶ U+2936 ARROW POINTING DOWNWARDS THEN CURVING LEFTWARDS
873 // ¶ U+00B6 PILCROW SIGN
874 char_type const screen_char = (c == 0x2028) ? 0x2936 : 0x00B6;
875 row.add(i, screen_char, *fi, par.lookupChange(i));
877 // FIXME: please someone fix the Hebrew/Arabic parenthesis mess!
878 // see also Paragraph::getUChar.
879 if (fi->language()->lang() == "hebrew") {
885 row.add(i, c, *fi, par.lookupChange(i));
888 // add inline completion width
889 // draw logically behind the previous character
890 if (ic_pos == i + 1 && !bv_->inlineCompletion().empty()) {
891 docstring const comp = bv_->inlineCompletion();
892 size_t const uniqueTo =bv_->inlineCompletionUniqueChars();
896 f.fontInfo().setColor(Color_inlinecompletion);
897 row.addVirtual(i + 1, comp.substr(0, uniqueTo), f, Change());
899 f.fontInfo().setColor(Color_nonunique_inlinecompletion);
900 row.addVirtual(i + 1, comp.substr(uniqueTo), f, Change());
903 // Handle some situations that abruptly terminate the row
905 // - Before a display inset
906 // - After a display inset
907 Inset const * inset = 0;
908 if (par.isNewline(i) || par.isEnvSeparator(i)
909 || (i + 1 < end && (inset = par.getInset(i + 1))
911 || (!row.empty() && row.back().inset
912 && row.back().inset->display())) {
914 need_new_row = par.isNewline(i);
921 } while (i < end && row.width() <= width);
925 // End of paragraph marker
926 ParagraphList const & pars = text_->paragraphs();
927 if (lyxrc.paragraph_markers && !need_new_row
928 && i == end && size_type(row.pit() + 1) < pars.size()) {
929 // add a virtual element for the end-of-paragraph
930 // marker; it is shown on screen, but does not exist
932 Font f(text_->layoutFont(row.pit()));
933 f.fontInfo().setColor(Color_paragraphmarker);
934 BufferParams const & bparams
935 = text_->inset().buffer().params();
936 f.setLanguage(par.getParLanguage(bparams));
937 // ¶ U+00B6 PILCROW SIGN
938 row.addVirtual(end, docstring(1, char_type(0x00B6)), f, Change());
941 // if the row is too large, try to cut at last separator. In case
942 // of success, reset indication that the row was broken abruptly.
943 int const next_width = max_width_ - leftMargin(max_width_, row.pit(), row.endpos())
944 - rightMargin(row.pit());
946 row.shortenIfNeeded(body_pos, width, next_width);
947 row.right_boundary(!row.empty() && row.endpos() < end
948 && row.back().endpos == row.endpos());
949 // Last row in paragraph is flushed
950 if (row.endpos() == end)
953 // make sure that the RTL elements are in reverse ordering
954 row.reverseRTL(is_rtl);
955 //LYXERR0("breakrow: row is " << row);
960 int TextMetrics::parTopSpacing(pit_type const pit) const
962 Paragraph const & par = text_->getPar(pit);
963 Layout const & layout = par.layout();
966 ParagraphList const & pars = text_->paragraphs();
967 double const dh = defaultRowHeight();
969 BufferParams const & bparams = bv_->buffer().params();
970 Inset const & inset = text_->inset();
971 // some parskips VERY EASY IMPLEMENTATION
972 if (bparams.paragraph_separation == BufferParams::ParagraphSkipSeparation
973 && !inset.getLayout().parbreakIsNewline()
974 && !par.layout().parbreak_is_newline
976 && ((layout.isParagraph() && par.getDepth() == 0)
977 || (pars[pit - 1].layout().isParagraph()
978 && pars[pit - 1].getDepth() == 0))) {
979 asc += bparams.getDefSkip().inPixels(*bv_);
982 if (par.params().startOfAppendix())
985 // special code for the top label
986 if (layout.labelIsAbove()
987 && (!layout.isParagraphGroup() || text_->isFirstInSequence(pit))
988 && !par.labelString().empty()) {
989 FontInfo labelfont = text_->labelFont(par);
990 FontMetrics const & lfm = theFontMetrics(labelfont);
991 asc += int(lfm.maxHeight() * layout.spacing.getValue()
992 * text_->spacing(par)
993 + (layout.topsep + layout.labelbottomsep) * dh);
996 // Add the layout spaces, for example before and after
997 // a section, or between the items of a itemize or enumerate
1000 pit_type prev = text_->depthHook(pit, par.getDepth());
1001 Paragraph const & prevpar = pars[prev];
1002 double layoutasc = 0;
1004 && prevpar.layout() == layout
1005 && prevpar.getDepth() == par.getDepth()
1006 && prevpar.getLabelWidthString() == par.getLabelWidthString()) {
1007 layoutasc = layout.itemsep * dh;
1008 } else if (pit != 0 && layout.topsep > 0)
1009 layoutasc = layout.topsep * dh;
1011 asc += int(layoutasc * 2 / (2 + pars[pit].getDepth()));
1013 prev = text_->outerHook(pit);
1014 if (prev != pit_type(pars.size())) {
1015 asc += int(pars[prev].layout().parsep * dh);
1016 } else if (pit != 0) {
1017 Paragraph const & prevpar = pars[pit - 1];
1018 if (prevpar.getDepth() != 0 || prevpar.layout() == layout)
1019 asc += int(layout.parsep * dh);
1026 int TextMetrics::parBottomSpacing(pit_type const pit) const
1028 double layoutdesc = 0;
1029 ParagraphList const & pars = text_->paragraphs();
1030 double const dh = defaultRowHeight();
1032 // add the layout spaces, for example before and after
1033 // a section, or between the items of a itemize or enumerate
1035 pit_type nextpit = pit + 1;
1036 if (nextpit != pit_type(pars.size())) {
1037 pit_type cpit = pit;
1039 if (pars[cpit].getDepth() > pars[nextpit].getDepth()) {
1040 double usual = pars[cpit].layout().bottomsep * dh;
1042 cpit = text_->depthHook(cpit, pars[nextpit].getDepth());
1043 if (pars[cpit].layout() != pars[nextpit].layout()
1044 || pars[nextpit].getLabelWidthString() != pars[cpit].getLabelWidthString())
1045 unusual = pars[cpit].layout().bottomsep * dh;
1046 layoutdesc = max(unusual, usual);
1047 } else if (pars[cpit].getDepth() == pars[nextpit].getDepth()) {
1048 if (pars[cpit].layout() != pars[nextpit].layout()
1049 || pars[nextpit].getLabelWidthString() != pars[cpit].getLabelWidthString())
1050 layoutdesc = int(pars[cpit].layout().bottomsep * dh);
1054 return int(layoutdesc * 2 / (2 + pars[pit].getDepth()));
1058 void TextMetrics::setRowHeight(Row & row) const
1060 Paragraph const & par = text_->getPar(row.pit());
1061 Layout const & layout = par.layout();
1062 double const spacing_val = layout.spacing.getValue() * text_->spacing(par);
1064 // Initial value for ascent (useful if row is empty).
1065 Font const font = displayFont(row.pit(), row.pos());
1066 FontMetrics const & fm = theFontMetrics(font);
1067 int maxasc = int(fm.maxAscent() * spacing_val);
1068 int maxdes = int(fm.maxDescent() * spacing_val);
1070 // Find the ascent/descent of the row contents
1071 Row::const_iterator cit = row.begin();
1072 Row::const_iterator cend = row.end();
1073 for ( ; cit != cend; ++cit) {
1075 maxasc = max(maxasc, cit->dim.ascent());
1076 maxdes = max(maxdes, cit->dim.descent());
1078 FontMetrics const & fm = theFontMetrics(cit->font);
1079 maxasc = max(maxasc, int(fm.maxAscent() * spacing_val));
1080 maxdes = max(maxdes, int(fm.maxDescent() * spacing_val));
1084 // This is nicer with box insets
1088 row.dimension().asc = maxasc;
1089 row.dimension().des = maxdes;
1093 // x is an absolute screen coord
1094 // returns the column near the specified x-coordinate of the row
1095 // x is set to the real beginning of this column
1096 pos_type TextMetrics::getPosNearX(Row const & row, int & x,
1097 bool & boundary, bool const select) const
1099 //LYXERR0("getPosNearX(" << x << ") row=" << row);
1100 /// For the main Text, it is possible that this pit is not
1101 /// yet in the CoordCache when moving cursor up.
1102 /// x Paragraph coordinate is always 0 for main text anyway.
1103 int const xo = origin_.x_;
1106 // Adapt to cursor row scroll offset if applicable.
1107 int const offset = bv_->horizScrollOffset(text_, row.pit(), row.pos());
1110 pos_type pos = row.pos();
1113 x = row.left_margin;
1114 else if (x <= row.left_margin) {
1115 pos = row.front().left_pos();
1116 x = row.left_margin;
1117 } else if (x >= row.width()) {
1118 pos = row.back().right_pos();
1121 double w = row.left_margin;
1122 Row::const_iterator cit = row.begin();
1123 Row::const_iterator cend = row.end();
1124 for ( ; cit != cend; ++cit) {
1125 if (w <= x && w + cit->full_width() > x) {
1126 int x_offset = int(x - w);
1127 pos = cit->x2pos(x_offset, select);
1128 x = int(x_offset + w);
1131 w += cit->full_width();
1133 if (cit == row.end()) {
1134 pos = row.back().right_pos();
1137 /** This tests for the case where the cursor is placed
1138 * just before a font direction change. See comment on
1139 * the boundary_ member in DocIterator.h to understand
1140 * how boundary helps here.
1142 else if (pos == cit->endpos
1143 && cit + 1 != row.end()
1144 && cit->isRTL() != (cit + 1)->isRTL())
1148 /** This tests for the case where the cursor is set at the end
1149 * of a row which has been broken due something else than a
1150 * separator (a display inset or a forced breaking of the
1151 * row). We know that there is a separator when the end of the
1152 * row is larger than the end of its last element.
1154 if (!row.empty() && pos == row.back().endpos
1155 && row.back().endpos == row.endpos()) {
1156 Inset const * inset = row.back().inset;
1157 if (inset && (inset->lyxCode() == NEWLINE_CODE
1158 || inset->lyxCode() == SEPARATOR_CODE))
1159 pos = row.back().pos;
1161 boundary = row.right_boundary();
1165 //LYXERR0("getPosNearX ==> pos=" << pos << ", boundary=" << boundary);
1171 pos_type TextMetrics::x2pos(pit_type pit, int row, int x) const
1173 // We play safe and use parMetrics(pit) to make sure the
1174 // ParagraphMetrics will be redone and OK to use if needed.
1175 // Otherwise we would use an empty ParagraphMetrics in
1176 // upDownInText() while in selection mode.
1177 ParagraphMetrics const & pm = parMetrics(pit);
1179 LBUFERR(row < int(pm.rows().size()));
1181 Row const & r = pm.rows()[row];
1182 return getPosNearX(r, x, bound);
1186 void TextMetrics::newParMetricsDown()
1188 pair<pit_type, ParagraphMetrics> const & last = *par_metrics_.rbegin();
1189 pit_type const pit = last.first + 1;
1190 if (pit == int(text_->paragraphs().size()))
1193 // do it and update its position.
1195 par_metrics_[pit].setPosition(last.second.position()
1196 + last.second.descent() + par_metrics_[pit].ascent());
1200 void TextMetrics::newParMetricsUp()
1202 pair<pit_type, ParagraphMetrics> const & first = *par_metrics_.begin();
1203 if (first.first == 0)
1206 pit_type const pit = first.first - 1;
1207 // do it and update its position.
1209 par_metrics_[pit].setPosition(first.second.position()
1210 - first.second.ascent() - par_metrics_[pit].descent());
1213 // y is screen coordinate
1214 pit_type TextMetrics::getPitNearY(int y)
1216 LASSERT(!text_->paragraphs().empty(), return -1);
1217 LASSERT(!par_metrics_.empty(), return -1);
1218 LYXERR(Debug::DEBUG, "y: " << y << " cache size: " << par_metrics_.size());
1220 // look for highest numbered paragraph with y coordinate less than given y
1223 ParMetricsCache::const_iterator it = par_metrics_.begin();
1224 ParMetricsCache::const_iterator et = par_metrics_.end();
1225 ParMetricsCache::const_iterator last = et;
1228 ParagraphMetrics const & pm = it->second;
1230 if (y < it->second.position() - int(pm.ascent())) {
1231 // We are looking for a position that is before the first paragraph in
1232 // the cache (which is in priciple off-screen, that is before the
1235 // We are already at the first paragraph in the inset.
1237 // OK, this is the paragraph we are looking for.
1238 pit = it->first - 1;
1243 ParagraphMetrics const & pm_last = par_metrics_[last->first];
1245 if (y >= last->second.position() + int(pm_last.descent())) {
1246 // We are looking for a position that is after the last paragraph in
1247 // the cache (which is in priciple off-screen), that is before the
1249 pit = last->first + 1;
1250 if (pit == int(text_->paragraphs().size()))
1251 // We are already at the last paragraph in the inset.
1253 // OK, this is the paragraph we are looking for.
1254 newParMetricsDown();
1258 for (; it != et; ++it) {
1259 LYXERR(Debug::DEBUG, "examining: pit: " << it->first
1260 << " y: " << it->second.position());
1262 ParagraphMetrics const & pm = par_metrics_[it->first];
1264 if (it->first >= pit && int(it->second.position()) - int(pm.ascent()) <= y) {
1266 yy = it->second.position();
1270 LYXERR(Debug::DEBUG, "found best y: " << yy << " for pit: " << pit);
1276 Row const & TextMetrics::getPitAndRowNearY(int & y, pit_type & pit,
1277 bool assert_in_view, bool up)
1279 ParagraphMetrics const & pm = par_metrics_[pit];
1281 int yy = pm.position() - pm.ascent();
1282 LBUFERR(!pm.rows().empty());
1283 RowList::const_iterator rit = pm.rows().begin();
1284 RowList::const_iterator rlast = pm.rows().end();
1286 for (; rit != rlast; yy += rit->height(), ++rit)
1287 if (yy + rit->height() > y)
1290 if (assert_in_view) {
1291 if (!up && yy + rit->height() > y) {
1292 if (rit != pm.rows().begin()) {
1295 } else if (pit != 0) {
1298 ParagraphMetrics const & pm2 = par_metrics_[pit];
1299 rit = pm2.rows().end();
1303 } else if (up && yy != y) {
1305 y = yy + rit->height();
1307 } else if (pit < int(text_->paragraphs().size()) - 1) {
1309 newParMetricsDown();
1310 ParagraphMetrics const & pm2 = par_metrics_[pit];
1311 rit = pm2.rows().begin();
1320 // x,y are absolute screen coordinates
1321 // sets cursor recursively descending into nested editable insets
1322 Inset * TextMetrics::editXY(Cursor & cur, int x, int y,
1323 bool assert_in_view, bool up)
1325 if (lyxerr.debugging(Debug::WORKAREA)) {
1326 LYXERR0("TextMetrics::editXY(cur, " << x << ", " << y << ")");
1327 cur.bv().coordCache().dump();
1329 pit_type pit = getPitNearY(y);
1330 LASSERT(pit != -1, return 0);
1332 int yy = y; // is modified by getPitAndRowNearY
1333 Row const & row = getPitAndRowNearY(yy, pit, assert_in_view, up);
1337 // Do we cover an inset?
1338 InsetList::InsetTable * it = checkInsetHit(pit, x, yy);
1341 // No inset, set position in the text
1342 bool bound = false; // is modified by getPosNearX
1343 int xx = x; // is modified by getPosNearX
1344 cur.pos() = getPosNearX(row, xx, bound);
1345 cur.boundary(bound);
1346 cur.setCurrentFont();
1351 Inset * inset = it->inset;
1352 //lyxerr << "inset " << inset << " hit at x: " << x << " y: " << y << endl;
1354 // Set position in front of inset
1355 cur.pos() = it->pos;
1356 cur.boundary(false);
1359 // Try to descend recursively inside the inset.
1360 Inset * edited = inset->editXY(cur, x, yy);
1361 if (edited == inset && cur.pos() == it->pos) {
1362 // non-editable inset, set cursor after the inset if x is
1363 // nearer to that position (bug 9628)
1364 // TODO: This should be replaced with an improvement of
1365 // Cursor::moveToClosestEdge that handles rtl text. (Which could not
1366 // be tested because of #10569.)
1367 CoordCache::Insets const & insetCache = bv_->coordCache().getInsets();
1368 if (insetCache.has(inset)) {
1369 Dimension const & dim = insetCache.dim(inset);
1370 Point p = insetCache.xy(inset);
1371 bool const is_rtl = text_->isRTL(text_->getPar(pit));
1373 // "in front of" == "right of"
1374 if (abs(p.x_ - x) < abs(p.x_ + dim.wid - x))
1377 // "in front of" == "left of"
1378 if (abs(p.x_ + dim.wid - x) < abs(p.x_ - x))
1384 if (cur.top().text() == text_)
1385 cur.setCurrentFont();
1390 void TextMetrics::setCursorFromCoordinates(Cursor & cur, int const x,
1391 int const y, bool const select)
1393 LASSERT(text_ == cur.text(), return);
1394 pit_type const pit = getPitNearY(y);
1395 LASSERT(pit != -1, return);
1397 ParagraphMetrics const & pm = par_metrics_[pit];
1399 int yy = pm.position() - pm.ascent();
1400 LYXERR(Debug::DEBUG, "x: " << x << " y: " << y <<
1401 " pit: " << pit << " yy: " << yy);
1404 LBUFERR(pm.rows().size());
1405 for (; r < int(pm.rows().size()) - 1; ++r) {
1406 Row const & row = pm.rows()[r];
1407 if (int(yy + row.height()) > y)
1412 Row const & row = pm.rows()[r];
1414 LYXERR(Debug::DEBUG, "row " << r << " from pos: " << row.pos());
1418 pos_type const pos = getPosNearX(row, xx, bound, select);
1420 LYXERR(Debug::DEBUG, "setting cursor pit: " << pit << " pos: " << pos);
1422 text_->setCursor(cur, pit, pos, true, bound);
1423 // remember new position.
1428 //takes screen x,y coordinates
1429 InsetList::InsetTable * TextMetrics::checkInsetHit(pit_type pit, int x, int y)
1431 Paragraph const & par = text_->paragraphs()[pit];
1432 CoordCache::Insets const & insetCache = bv_->coordCache().getInsets();
1434 LYXERR(Debug::DEBUG, "x: " << x << " y: " << y << " pit: " << pit);
1436 for (auto const & it : par.insetList()) {
1437 LYXERR(Debug::DEBUG, "examining inset " << it.inset);
1439 if (insetCache.covers(it.inset, x, y)) {
1440 LYXERR(Debug::DEBUG, "Hit inset: " << it.inset);
1441 return const_cast<InsetList::InsetTable *>(&it);
1445 LYXERR(Debug::DEBUG, "No inset hit. ");
1450 //takes screen x,y coordinates
1451 Inset * TextMetrics::checkInsetHit(int x, int y)
1453 pit_type const pit = getPitNearY(y);
1454 LASSERT(pit != -1, return 0);
1455 InsetList::InsetTable * it = checkInsetHit(pit, x, y);
1464 int TextMetrics::cursorX(CursorSlice const & sl,
1465 bool boundary) const
1467 LASSERT(sl.text() == text_, return 0);
1469 ParagraphMetrics const & pm = par_metrics_[sl.pit()];
1470 if (pm.rows().empty())
1472 Row const & row = pm.getRow(sl.pos(), boundary);
1473 pos_type const pos = sl.pos();
1476 row.findElement(pos, boundary, x);
1482 int TextMetrics::cursorY(CursorSlice const & sl, bool boundary) const
1484 //lyxerr << "TextMetrics::cursorY: boundary: " << boundary << endl;
1485 ParagraphMetrics const & pm = par_metrics_[sl.pit()];
1486 if (pm.rows().empty())
1490 h -= par_metrics_[0].rows()[0].ascent();
1491 for (pit_type pit = 0; pit < sl.pit(); ++pit) {
1492 h += par_metrics_[pit].height();
1495 if (pos && boundary)
1497 size_t const rend = pm.pos2row(pos);
1498 for (size_t rit = 0; rit != rend; ++rit)
1499 h += pm.rows()[rit].height();
1500 h += pm.rows()[rend].ascent();
1505 // the cursor set functions have a special mechanism. When they
1506 // realize you left an empty paragraph, they will delete it.
1508 bool TextMetrics::cursorHome(Cursor & cur)
1510 LASSERT(text_ == cur.text(), return false);
1511 ParagraphMetrics const & pm = par_metrics_[cur.pit()];
1512 Row const & row = pm.getRow(cur.pos(),cur.boundary());
1513 return text_->setCursor(cur, cur.pit(), row.pos());
1517 bool TextMetrics::cursorEnd(Cursor & cur)
1519 LASSERT(text_ == cur.text(), return false);
1520 // if not on the last row of the par, put the cursor before
1521 // the final space exept if I have a spanning inset or one string
1522 // is so long that we force a break.
1523 pos_type end = cur.textRow().endpos();
1525 // empty text, end-1 is no valid position
1527 bool boundary = false;
1528 if (end != cur.lastpos()) {
1529 if (!cur.paragraph().isLineSeparator(end-1)
1530 && !cur.paragraph().isNewline(end-1)
1531 && !cur.paragraph().isEnvSeparator(end-1))
1535 } else if (cur.paragraph().isEnvSeparator(end-1))
1537 return text_->setCursor(cur, cur.pit(), end, true, boundary);
1541 void TextMetrics::deleteLineForward(Cursor & cur)
1543 LASSERT(text_ == cur.text(), return);
1544 if (cur.lastpos() == 0) {
1545 // Paragraph is empty, so we just go forward
1546 text_->cursorForward(cur);
1549 cur.selection(true); // to avoid deletion
1552 // What is this test for ??? (JMarc)
1553 if (!cur.selection())
1554 text_->deleteWordForward(cur);
1556 cap::cutSelection(cur, true, false);
1557 cur.checkBufferStructure();
1562 bool TextMetrics::isLastRow(Row const & row) const
1564 ParagraphList const & pars = text_->paragraphs();
1565 return row.endpos() >= pars[row.pit()].size()
1566 && row.pit() + 1 == pit_type(pars.size());
1570 bool TextMetrics::isFirstRow(Row const & row) const
1572 return row.pos() == 0 && row.pit() == 0;
1576 int TextMetrics::leftMargin(int max_width, pit_type pit) const
1578 return leftMargin(max_width, pit, text_->paragraphs()[pit].size());
1582 int TextMetrics::leftMargin(int max_width,
1583 pit_type const pit, pos_type const pos) const
1585 ParagraphList const & pars = text_->paragraphs();
1587 LASSERT(pit >= 0, return 0);
1588 LASSERT(pit < int(pars.size()), return 0);
1589 Paragraph const & par = pars[pit];
1590 LASSERT(pos >= 0, return 0);
1591 LASSERT(pos <= par.size(), return 0);
1592 Buffer const & buffer = bv_->buffer();
1593 //lyxerr << "TextMetrics::leftMargin: pit: " << pit << " pos: " << pos << endl;
1594 DocumentClass const & tclass = buffer.params().documentClass();
1595 Layout const & layout = par.layout();
1596 FontMetrics const & bfm = theFontMetrics(buffer.params().getFont());
1598 docstring parindent = layout.parindent;
1602 if (text_->isMainText())
1603 l_margin += bv_->leftMargin();
1605 l_margin += bfm.signedWidth(tclass.leftmargin());
1607 int depth = par.getDepth();
1609 // find the next level paragraph
1610 pit_type newpar = text_->outerHook(pit);
1611 if (newpar != pit_type(pars.size())) {
1612 if (pars[newpar].layout().isEnvironment()) {
1613 int nestmargin = depth * nestMargin();
1614 if (text_->isMainText())
1615 nestmargin += changebarMargin();
1616 l_margin = max(leftMargin(max_width, newpar), nestmargin);
1617 // Remove the parindent that has been added
1618 // if the paragraph was empty.
1619 if (pars[newpar].empty() &&
1620 buffer.params().paragraph_separation ==
1621 BufferParams::ParagraphIndentSeparation) {
1622 docstring pi = pars[newpar].layout().parindent;
1623 l_margin -= bfm.signedWidth(pi);
1626 if (tclass.isDefaultLayout(par.layout())
1627 || tclass.isPlainLayout(par.layout())) {
1628 if (pars[newpar].params().noindent())
1631 parindent = pars[newpar].layout().parindent;
1636 // This happens after sections or environments in standard classes.
1637 // We have to check the previous layout at same depth.
1638 if (buffer.params().paragraph_separation ==
1639 BufferParams::ParagraphSkipSeparation)
1641 else if (pit > 0 && pars[pit - 1].getDepth() >= par.getDepth()) {
1642 pit_type prev = text_->depthHook(pit, par.getDepth());
1643 if (par.layout() == pars[prev].layout()) {
1645 && pars[pit - 1].layout().nextnoindent)
1647 } else if (pars[prev].layout().nextnoindent)
1651 FontInfo const labelfont = text_->labelFont(par);
1652 FontMetrics const & lfm = theFontMetrics(labelfont);
1654 switch (layout.margintype) {
1655 case MARGIN_DYNAMIC:
1656 if (!layout.leftmargin.empty()) {
1657 l_margin += bfm.signedWidth(layout.leftmargin);
1659 if (!par.labelString().empty()) {
1660 l_margin += lfm.signedWidth(layout.labelindent);
1661 l_margin += lfm.width(par.labelString());
1662 l_margin += lfm.width(layout.labelsep);
1666 case MARGIN_MANUAL: {
1667 l_margin += lfm.signedWidth(layout.labelindent);
1668 // The width of an empty par, even with manual label, should be 0
1669 if (!par.empty() && pos >= par.beginOfBody()) {
1670 if (!par.getLabelWidthString().empty()) {
1671 docstring labstr = par.getLabelWidthString();
1672 l_margin += lfm.width(labstr);
1673 l_margin += lfm.width(layout.labelsep);
1679 case MARGIN_STATIC: {
1680 l_margin += bfm.signedWidth(layout.leftmargin) * 4
1681 / (par.getDepth() + 4);
1685 case MARGIN_FIRST_DYNAMIC:
1686 if (layout.labeltype == LABEL_MANUAL) {
1687 // if we are at position 0, we are never in the body
1688 if (pos > 0 && pos >= par.beginOfBody())
1689 l_margin += lfm.signedWidth(layout.leftmargin);
1691 l_margin += lfm.signedWidth(layout.labelindent);
1693 // Special case to fix problems with
1695 || (layout.labeltype == LABEL_STATIC
1696 && layout.latextype == LATEX_ENVIRONMENT
1697 && !text_->isFirstInSequence(pit))) {
1698 l_margin += lfm.signedWidth(layout.leftmargin);
1699 } else if (!layout.labelIsAbove()) {
1700 l_margin += lfm.signedWidth(layout.labelindent);
1701 l_margin += lfm.width(layout.labelsep);
1702 l_margin += lfm.width(par.labelString());
1706 case MARGIN_RIGHT_ADDRESS_BOX: {
1708 // The left margin depends on the widest row in this paragraph.
1709 // This code is wrong because it depends on the rows, but at the
1710 // same time this function is used in redoParagraph to construct
1712 ParagraphMetrics const & pm = par_metrics_[pit];
1713 RowList::const_iterator rit = pm.rows().begin();
1714 RowList::const_iterator end = pm.rows().end();
1715 int minfill = max_width;
1716 for ( ; rit != end; ++rit)
1717 if (rit->fill() < minfill)
1718 minfill = rit->fill();
1719 l_margin += bfm.signedWidth(layout.leftmargin);
1720 l_margin += minfill;
1722 // also wrong, but much shorter.
1723 l_margin += max_width / 2;
1728 if (!par.params().leftIndent().zero())
1729 l_margin += par.params().leftIndent().inPixels(max_width, lfm.em());
1731 LyXAlignment align = par.getAlign();
1733 // set the correct parindent
1735 && (layout.labeltype == LABEL_NO_LABEL
1736 || layout.labeltype == LABEL_ABOVE
1737 || layout.labeltype == LABEL_CENTERED
1738 || (layout.labeltype == LABEL_STATIC
1739 && layout.latextype == LATEX_ENVIRONMENT
1740 && !text_->isFirstInSequence(pit)))
1741 && (align == LYX_ALIGN_BLOCK || align == LYX_ALIGN_LEFT)
1742 && !par.params().noindent()
1743 // in some insets, paragraphs are never indented
1744 && !text_->inset().neverIndent()
1745 // display style insets are always centered, omit indentation
1748 && par.getInset(pos)->display())
1749 && (!(tclass.isDefaultLayout(par.layout())
1750 || tclass.isPlainLayout(par.layout()))
1751 || buffer.params().paragraph_separation
1752 == BufferParams::ParagraphIndentSeparation)) {
1753 // use the parindent of the layout when the
1754 // default indentation is used otherwise use
1755 // the indentation set in the document
1757 if (buffer.params().getIndentation().asLyXCommand() == "default")
1758 l_margin += bfm.signedWidth(parindent);
1760 l_margin += buffer.params().getIndentation().inPixels(*bv_);
1767 void TextMetrics::draw(PainterInfo & pi, int x, int y) const
1769 if (par_metrics_.empty())
1775 ParMetricsCache::iterator it = par_metrics_.begin();
1776 ParMetricsCache::iterator const pm_end = par_metrics_.end();
1777 y -= it->second.ascent();
1778 for (; it != pm_end; ++it) {
1779 ParagraphMetrics const & pmi = it->second;
1781 pit_type const pit = it->first;
1782 // Save the paragraph position in the cache.
1783 it->second.setPosition(y);
1784 drawParagraph(pi, pit, x, y);
1790 void TextMetrics::drawParagraph(PainterInfo & pi, pit_type const pit, int const x, int y) const
1792 ParagraphMetrics const & pm = par_metrics_[pit];
1793 if (pm.rows().empty())
1795 size_t const nrows = pm.rows().size();
1797 // Use fast lane when drawing is disabled.
1798 if (!pi.pain.isDrawingEnabled()) {
1799 for (size_t i = 0; i != nrows; ++i) {
1801 Row const & row = pm.rows()[i];
1802 // Adapt to cursor row scroll offset if applicable.
1803 int row_x = x - bv_->horizScrollOffset(text_, pit, row.pos());
1807 RowPainter rp(pi, *text_, row, row_x, y);
1809 rp.paintOnlyInsets();
1815 int const ww = bv_->workHeight();
1816 Cursor const & cur = bv_->cursor();
1817 DocIterator sel_beg = cur.selectionBegin();
1818 DocIterator sel_end = cur.selectionEnd();
1819 bool selection = cur.selection()
1820 // This is our text.
1821 && cur.text() == text_
1822 // if the anchor is outside, this is not our selection
1823 && cur.normalAnchor().text() == text_
1824 && pit >= sel_beg.pit() && pit <= sel_end.pit();
1826 // We store the begin and end pos of the selection relative to this par
1827 DocIterator sel_beg_par = cur.selectionBegin();
1828 DocIterator sel_end_par = cur.selectionEnd();
1830 // We care only about visible selection.
1832 if (pit != sel_beg.pit()) {
1833 sel_beg_par.pit() = pit;
1834 sel_beg_par.pos() = 0;
1836 if (pit != sel_end.pit()) {
1837 sel_end_par.pit() = pit;
1838 sel_end_par.pos() = sel_end_par.lastpos();
1842 for (size_t i = 0; i != nrows; ++i) {
1844 Row const & row = pm.rows()[i];
1845 // Adapt to cursor row scroll offset if applicable.
1846 int row_x = x - bv_->horizScrollOffset(text_, pit, row.pos());
1850 RowPainter rp(pi, *text_, row, row_x, y);
1852 // It is not needed to draw on screen if we are not inside.
1853 bool const inside = (y + row.descent() >= 0
1854 && y - row.ascent() < ww);
1855 pi.pain.setDrawingEnabled(inside);
1857 // Paint only the insets to set inset cache correctly
1858 // FIXME: remove paintOnlyInsets when we know that positions
1859 // have already been set.
1860 rp.paintOnlyInsets();
1866 row.setSelectionAndMargins(sel_beg_par, sel_end_par);
1868 row.setSelection(-1, -1);
1870 // The row knows nothing about the paragraph, so we have to check
1871 // whether this row is the first or last and update the margins.
1872 if (row.selection()) {
1873 if (row.sel_beg == 0)
1874 row.begin_margin_sel = sel_beg.pit() < pit;
1875 if (row.sel_end == sel_end_par.lastpos())
1876 row.end_margin_sel = sel_end.pit() > pit;
1879 // Row signature; has row changed since last paint?
1880 row.setCrc(pm.computeRowSignature(row, *bv_));
1881 bool row_has_changed = row.changed()
1882 || bv_->hadHorizScrollOffset(text_, pit, row.pos());
1884 // Take this opportunity to spellcheck the row contents.
1885 if (row_has_changed && pi.do_spellcheck && lyxrc.spellcheck_continuously) {
1886 text_->getPar(pit).spellCheck();
1889 // Don't paint the row if a full repaint has not been requested
1890 // and if it has not changed.
1891 if (!pi.full_repaint && !row_has_changed) {
1892 // Paint only the insets if the text itself is
1894 rp.paintOnlyInsets();
1899 // Clear background of this row if paragraph background was not
1900 // already cleared because of a full repaint.
1901 if (!pi.full_repaint && row_has_changed) {
1902 LYXERR(Debug::PAINTING, "Clear rect@("
1903 << max(row_x, 0) << ", " << y - row.ascent() << ")="
1904 << width() << " x " << row.height());
1905 pi.pain.fillRectangle(max(row_x, 0), y - row.ascent(),
1906 width(), row.height(), pi.background_color);
1909 // Instrumentation for testing row cache (see also
1911 if (lyxerr.debugging(Debug::PAINTING)
1912 && (row.selection() || pi.full_repaint || row_has_changed)) {
1913 string const foreword = text_->isMainText() ?
1914 "main text redraw " : "inset text redraw: ";
1915 LYXERR(Debug::PAINTING, foreword << "pit=" << pit << " row=" << i
1916 << " row_selection=" << row.selection()
1917 << " full_repaint=" << pi.full_repaint
1918 << " row_has_changed=" << row_has_changed
1919 << " drawingEnabled=" << pi.pain.isDrawingEnabled());
1922 // Backup full_repaint status and force full repaint
1923 // for inner insets as the Row has been cleared out.
1924 bool tmp = pi.full_repaint;
1925 pi.full_repaint = true;
1927 rp.paintSelection();
1930 rp.paintChangeBar();
1931 if (i == 0 && !row.isRTL())
1933 if (i == nrows - 1 && row.isRTL())
1936 if (i == nrows - 1 && !row.isRTL())
1938 if (i == 0 && row.isRTL())
1940 rp.paintTooLargeMarks(row_x + row.left_x() < 0,
1941 row_x + row.right_x() > bv_->workWidth());
1944 // Restore full_repaint status.
1945 pi.full_repaint = tmp;
1947 // Re-enable screen drawing for future use of the painter.
1948 pi.pain.setDrawingEnabled(true);
1950 //LYXERR(Debug::PAINTING, ".");
1954 void TextMetrics::completionPosAndDim(Cursor const & cur, int & x, int & y,
1955 Dimension & dim) const
1957 Cursor const & bvcur = cur.bv().cursor();
1959 // get word in front of cursor
1960 docstring word = text_->previousWord(bvcur.top());
1961 DocIterator wordStart = bvcur;
1962 wordStart.pos() -= word.length();
1964 // calculate dimensions of the word
1966 row.pit(bvcur.pit());
1967 row.pos(wordStart.pos());
1968 row.endpos(bvcur.pos());
1970 dim = row.dimension();
1972 // get position on screen of the word start and end
1973 //FIXME: Is it necessary to explicitly set this to false?
1974 wordStart.boundary(false);
1975 Point lxy = cur.bv().getPos(wordStart);
1976 Point rxy = cur.bv().getPos(bvcur);
1977 dim.wid = abs(rxy.x_ - lxy.x_);
1979 // calculate position of word
1981 x = min(rxy.x_, lxy.x_);
1983 //lyxerr << "wid=" << dim.width() << " x=" << x << " y=" << y << " lxy.x_=" << lxy.x_ << " rxy.x_=" << rxy.x_ << " word=" << word << std::endl;
1984 //lyxerr << " wordstart=" << wordStart << " bvcur=" << bvcur << " cur=" << cur << std::endl;
1987 int defaultRowHeight()
1989 return int(theFontMetrics(sane_font).maxHeight() * 1.2);