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.
18 //#define KEEP_OLD_METRICS_CODE 1
22 #include "TextMetrics.h"
26 #include "buffer_funcs.h"
27 #include "BufferParams.h"
28 #include "BufferView.h"
29 #include "CoordCache.h"
31 #include "CutAndPaste.h"
33 #include "InsetList.h"
36 #include "MetricsInfo.h"
37 #include "ParagraphParameters.h"
38 #include "rowpainter.h"
40 #include "TextClass.h"
43 #include "insets/InsetText.h"
45 #include "mathed/MathMacroTemplate.h"
47 #include "frontends/FontMetrics.h"
48 #include "frontends/Painter.h"
50 #include "support/debug.h"
51 #include "support/lassert.h"
60 using frontend::FontMetrics;
64 int numberOfSeparators(Row const & row)
67 Row::const_iterator cit = row.begin();
68 Row::const_iterator const end = row.end();
69 for ( ; cit != end ; ++cit)
70 if (cit->type == Row::SEPARATOR)
76 void setSeparatorWidth(Row & row, double w)
79 Row::iterator it = row.begin();
80 Row::iterator const end = row.end();
81 for ( ; it != end ; ++it)
82 if (it->type == Row::SEPARATOR)
87 int numberOfLabelHfills(Paragraph const & par, Row const & row)
89 pos_type last = row.endpos() - 1;
90 pos_type first = row.pos();
92 // hfill *DO* count at the beginning of paragraphs!
94 while (first < last && par.isHfill(first))
98 last = min(last, par.beginOfBody());
100 for (pos_type p = first; p < last; ++p) {
108 int numberOfHfills(Row const & row, pos_type const body_pos)
111 Row::const_iterator cit = row.begin();
112 Row::const_iterator const end = row.end();
113 for ( ; cit != end ; ++cit)
114 if (cit->pos >= body_pos
115 && cit->inset && cit->inset->isHfill())
123 /////////////////////////////////////////////////////////////////////
127 /////////////////////////////////////////////////////////////////////
130 TextMetrics::TextMetrics(BufferView * bv, Text * text)
131 : bv_(bv), text_(text)
134 max_width_ = bv_->workWidth();
135 dim_.wid = max_width_;
141 bool TextMetrics::contains(pit_type pit) const
143 return par_metrics_.find(pit) != par_metrics_.end();
147 ParagraphMetrics const & TextMetrics::parMetrics(pit_type pit) const
149 return const_cast<TextMetrics *>(this)->parMetrics(pit, true);
154 pair<pit_type, ParagraphMetrics const *> TextMetrics::first() const
156 ParMetricsCache::const_iterator it = par_metrics_.begin();
157 return make_pair(it->first, &it->second);
161 pair<pit_type, ParagraphMetrics const *> TextMetrics::last() const
163 LBUFERR(!par_metrics_.empty());
164 ParMetricsCache::const_reverse_iterator it = par_metrics_.rbegin();
165 return make_pair(it->first, &it->second);
169 ParagraphMetrics & TextMetrics::parMetrics(pit_type pit, bool redo)
171 ParMetricsCache::iterator pmc_it = par_metrics_.find(pit);
172 if (pmc_it == par_metrics_.end()) {
173 pmc_it = par_metrics_.insert(
174 make_pair(pit, ParagraphMetrics(text_->getPar(pit)))).first;
176 if (pmc_it->second.rows().empty() && redo)
178 return pmc_it->second;
182 bool TextMetrics::metrics(MetricsInfo & mi, Dimension & dim, int min_width)
184 LBUFERR(mi.base.textwidth > 0);
185 max_width_ = mi.base.textwidth;
186 // backup old dimension.
187 Dimension const old_dim = dim_;
190 dim_.wid = min_width;
191 pit_type const npar = text_->paragraphs().size();
193 // If there is more than one row, expand the text to
194 // the full allowable width.
195 dim_.wid = max_width_;
197 //lyxerr << "TextMetrics::metrics: width: " << mi.base.textwidth
198 // << " maxWidth: " << max_width_ << "\nfont: " << mi.base.font << endl;
200 bool changed = false;
202 for (pit_type pit = 0; pit != npar; ++pit) {
203 changed |= redoParagraph(pit);
204 ParagraphMetrics const & pm = par_metrics_[pit];
206 if (dim_.wid < pm.width())
207 dim_.wid = pm.width();
210 dim_.asc = par_metrics_[0].ascent();
211 dim_.des = h - dim_.asc;
212 //lyxerr << "dim_.wid " << dim_.wid << endl;
213 //lyxerr << "dim_.asc " << dim_.asc << endl;
214 //lyxerr << "dim_.des " << dim_.des << endl;
216 changed |= dim_ != old_dim;
222 int TextMetrics::rightMargin(ParagraphMetrics const & pm) const
224 return main_text_? pm.rightMargin(*bv_) : 0;
228 int TextMetrics::rightMargin(pit_type const pit) const
230 return main_text_? par_metrics_[pit].rightMargin(*bv_) : 0;
234 void TextMetrics::applyOuterFont(Font & font) const
236 FontInfo lf(font_.fontInfo());
237 lf.reduce(bv_->buffer().params().getFont().fontInfo());
238 font.fontInfo().realize(lf);
242 Font TextMetrics::displayFont(pit_type pit, pos_type pos) const
244 LASSERT(pos >= 0, { static Font f; return f; });
246 ParagraphList const & pars = text_->paragraphs();
247 Paragraph const & par = pars[pit];
248 Layout const & layout = par.layout();
249 Buffer const & buffer = bv_->buffer();
251 BufferParams const & params = buffer.params();
252 pos_type const body_pos = par.beginOfBody();
254 // We specialize the 95% common case:
255 if (!par.getDepth()) {
256 Font f = par.getFontSettings(params, pos);
257 if (!text_->isMainText())
259 bool lab = layout.labeltype == LABEL_MANUAL && pos < body_pos;
261 FontInfo const & lf = lab ? layout.labelfont : layout.font;
262 FontInfo rlf = lab ? layout.reslabelfont : layout.resfont;
264 // In case the default family has been customized
265 if (lf.family() == INHERIT_FAMILY)
266 rlf.setFamily(params.getFont().fontInfo().family());
267 f.fontInfo().realize(rlf);
271 // The uncommon case need not be optimized as much
272 FontInfo const & layoutfont = pos < body_pos ?
273 layout.labelfont : layout.font;
275 Font font = par.getFontSettings(params, pos);
276 font.fontInfo().realize(layoutfont);
278 if (!text_->isMainText())
279 applyOuterFont(font);
281 // Realize against environment font information
282 // NOTE: the cast to pit_type should be removed when pit_type
283 // changes to a unsigned integer.
284 if (pit < pit_type(pars.size()))
285 font.fontInfo().realize(text_->outerFont(pit).fontInfo());
287 // Realize with the fonts of lesser depth.
288 font.fontInfo().realize(params.getFont().fontInfo());
294 bool TextMetrics::isRTL(CursorSlice const & sl, bool boundary) const
296 if (!lyxrc.rtl_support || !sl.text())
300 if (boundary && sl.pos() > 0)
303 return displayFont(sl.pit(), sl.pos() + correction).isVisibleRightToLeft();
307 bool TextMetrics::isRTLBoundary(pit_type pit, pos_type pos) const
309 // no RTL boundary at paragraph start
310 if (!lyxrc.rtl_support || pos == 0)
313 Font const & left_font = displayFont(pit, pos - 1);
315 return isRTLBoundary(pit, pos, left_font);
319 // isRTLBoundary returns false on a real end-of-line boundary,
320 // because otherwise the two boundary types get mixed up.
321 // This is the whole purpose of this being in TextMetrics.
322 bool TextMetrics::isRTLBoundary(pit_type pit, pos_type pos,
323 Font const & font) const
325 if (!lyxrc.rtl_support
326 // no RTL boundary at paragraph start
328 // if the metrics have not been calculated, then we are not
329 // on screen and can safely ignore issues about boundaries.
333 ParagraphMetrics & pm = par_metrics_[pit];
334 // no RTL boundary in empty paragraph
335 if (pm.rows().empty())
338 pos_type endpos = pm.getRow(pos - 1, false).endpos();
339 pos_type startpos = pm.getRow(pos, false).pos();
340 // no RTL boundary at line start:
341 // abc\n -> toggle to RTL -> abc\n (and not: abc\n|
343 if (pos == startpos && pos == endpos) // start of cur row, end of prev row
346 Paragraph const & par = text_->getPar(pit);
347 // no RTL boundary at line break:
348 // abc|\n -> move right -> abc\n (and not: abc\n|
350 if (startpos == pos && endpos == pos && endpos != par.size()
351 && (par.isNewline(pos - 1)
352 || par.isLineSeparator(pos - 1)
353 || par.isSeparator(pos - 1)))
356 bool left = font.isVisibleRightToLeft();
358 if (pos == par.size())
359 right = par.isRTL(bv_->buffer().params());
361 right = displayFont(pit, pos).isVisibleRightToLeft();
363 return left != right;
367 bool TextMetrics::redoParagraph(pit_type const pit)
369 Paragraph & par = text_->getPar(pit);
370 // IMPORTANT NOTE: We pass 'false' explicitly in order to not call
371 // redoParagraph() recursively inside parMetrics.
372 Dimension old_dim = parMetrics(pit, false).dim();
373 ParagraphMetrics & pm = par_metrics_[pit];
376 Buffer & buffer = bv_->buffer();
377 main_text_ = (text_ == &buffer.text());
378 bool changed = false;
380 // Check whether there are InsetBibItems that need fixing
381 // FIXME: This check ought to be done somewhere else. It is the reason
382 // why text_ is not const. But then, where else to do it?
383 // Well, how can you end up with either (a) a biblio environment that
384 // has no InsetBibitem or (b) a biblio environment with more than one
385 // InsetBibitem? I think the answer is: when paragraphs are merged;
386 // when layout is set; when material is pasted.
387 if (par.brokenBiblio()) {
388 Cursor & cur = const_cast<Cursor &>(bv_->cursor());
389 // In some cases, we do not know how to record undo
390 if (&cur.inset() == &text_->inset())
391 cur.recordUndo(ATOMIC_UNDO, pit, pit);
393 int const moveCursor = par.fixBiblio(buffer);
395 // Is it necessary to update the cursor?
396 if (&cur.inset() == &text_->inset() && cur.pit() == pit) {
399 else if (moveCursor < 0 && cur.pos() >= -moveCursor)
404 // Optimisation: this is used in the next two loops
405 // so better to calculate that once here.
406 int const right_margin = rightMargin(pm);
408 // iterator pointing to paragraph to resolve macros
409 DocIterator parPos = text_->macrocontextPosition();
413 LYXERR(Debug::INFO, "MacroContext not initialised!"
414 << " Going through the buffer again and hope"
415 << " the context is better then.");
416 // FIXME audit updateBuffer calls
417 // This should not be here, but it is not clear yet where else it
419 bv_->buffer().updateBuffer();
420 parPos = text_->macrocontextPosition();
421 LBUFERR(!parPos.empty());
426 Font const bufferfont = buffer.params().getFont();
427 InsetList::const_iterator ii = par.insetList().begin();
428 InsetList::const_iterator iend = par.insetList().end();
429 for (; ii != iend; ++ii) {
430 // FIXME Doesn't this HAVE to be non-empty?
431 // position already initialized?
432 if (!parPos.empty()) {
433 parPos.pos() = ii->pos;
435 // A macro template would normally not be visible
436 // by itself. But the tex macro semantics allow
437 // recursion, so we artifically take the context
438 // after the macro template to simulate this.
439 if (ii->inset->lyxCode() == MATHMACRO_CODE)
443 // do the metric calculation
445 int const w = max_width_ - leftMargin(max_width_, pit, ii->pos)
447 Font const & font = ii->inset->inheritFont() ?
448 displayFont(pit, ii->pos) : bufferfont;
449 MacroContext mc(&buffer, parPos);
450 MetricsInfo mi(bv_, font.fontInfo(), w, mc);
451 ii->inset->metrics(mi, dim);
452 Dimension const old_dim = pm.insetDimension(ii->inset);
453 if (old_dim != dim) {
454 pm.setInsetDimension(ii->inset, dim);
459 par.setBeginOfBody();
461 size_t row_index = 0;
462 // maximum pixel width of a row
464 if (row_index == pm.rows().size())
465 pm.rows().push_back(Row());
466 Row & row = pm.rows()[row_index];
468 breakRow(row, right_margin, pit);
469 setRowHeight(row, pit);
470 row.setChanged(false);
471 if (row_index || row.endpos() < par.size())
472 // If there is more than one row, expand the text to
473 // the full allowable width. This setting here is needed
474 // for the computeRowMetrics() below.
475 dim_.wid = max_width_;
476 int const max_row_width = max(dim_.wid, row.width());
477 computeRowMetrics(pit, row, max_row_width);
478 first = row.endpos();
481 pm.dim().wid = max(pm.dim().wid, row.width());
482 pm.dim().des += row.height();
483 } while (first < par.size());
485 if (row_index < pm.rows().size())
486 pm.rows().resize(row_index);
488 // Make sure that if a par ends in newline, there is one more row
490 if (first > 0 && par.isNewline(first - 1)) {
491 if (row_index == pm.rows().size())
492 pm.rows().push_back(Row());
493 Row & row = pm.rows()[row_index];
496 setRowHeight(row, pit);
497 row.setChanged(false);
498 int const max_row_width = max(dim_.wid, row.width());
499 computeRowMetrics(pit, row, max_row_width);
500 pm.dim().des += row.height();
503 pm.dim().asc += pm.rows()[0].ascent();
504 pm.dim().des -= pm.rows()[0].ascent();
506 changed |= old_dim.height() != pm.dim().height();
512 int TextMetrics::getAlign(Paragraph const & par, pos_type const pos) const
514 Layout const & layout = par.layout();
517 if (par.params().align() == LYX_ALIGN_LAYOUT)
518 align = layout.align;
520 align = par.params().align();
522 // handle alignment inside tabular cells
523 Inset const & owner = text_->inset();
524 switch (owner.contentAlignment()) {
525 case LYX_ALIGN_CENTER:
527 case LYX_ALIGN_RIGHT:
528 if (align == LYX_ALIGN_NONE || align == LYX_ALIGN_BLOCK)
529 align = owner.contentAlignment();
532 // unchanged (use align)
536 // Display-style insets should always be on a centered row
537 if (Inset const * inset = par.getInset(pos)) {
538 switch (inset->display()) {
539 case Inset::AlignLeft:
540 align = LYX_ALIGN_BLOCK;
542 case Inset::AlignCenter:
543 align = LYX_ALIGN_CENTER;
546 // unchanged (use align)
548 case Inset::AlignRight:
549 align = LYX_ALIGN_RIGHT;
554 // Has the user requested we not justify stuff?
555 if (!bv_->buffer().params().justification
556 && align == LYX_ALIGN_BLOCK)
557 align = LYX_ALIGN_LEFT;
563 void TextMetrics::computeRowMetrics(pit_type const pit,
564 Row & row, int width) const
569 Paragraph const & par = text_->getPar(pit);
571 double w = width - row.width();
572 // FIXME: put back this assertion when the crash on new doc is solved.
573 //LASSERT(w >= 0, /**/);
575 //lyxerr << "\ndim_.wid " << dim_.wid << endl;
576 //lyxerr << "row.width() " << row.width() << endl;
577 //lyxerr << "w " << w << endl;
579 bool const is_rtl = text_->isRTL(par);
581 row.x = rightMargin(pit);
583 row.x = leftMargin(max_width_, pit, row.pos());
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(pit, row) / double(nlh);
607 // are there any hfills in the row?
608 if (int const nh = numberOfHfills(row, par.beginOfBody())) {
610 hfill = w / double(nh);
611 // we don't have to look at the alignment if it is ALIGN_LEFT and
612 // if the row is already larger then the permitted width as then
613 // we force the LEFT_ALIGN'edness!
614 } else if (int(row.width()) < max_width_) {
615 // is it block, flushleft or flushright?
616 // set x how you need it
617 int const align = getAlign(par, row.pos());
620 case LYX_ALIGN_BLOCK: {
621 int const ns = numberOfSeparators(row);
622 /** If we have separators, and this row has
623 * not be broken abruptly by a display inset
624 * or newline, then stretch it */
625 if (ns && !row.right_boundary()
626 && row.endpos() != par.size()) {
627 setSeparatorWidth(row, w / ns);
628 row.dimension().wid = width;
629 //lyxerr << "row.separator " << row.separator << endl;
630 //lyxerr << "ns " << ns << endl;
632 row.dimension().wid = width;
637 case LYX_ALIGN_RIGHT:
638 row.dimension().wid = width;
641 case LYX_ALIGN_CENTER:
642 row.dimension().wid += w / 2;
650 pos_type body_pos = par.beginOfBody();
651 pos_type end = row.endpos();
654 && (body_pos > end || !par.isLineSeparator(body_pos - 1))) {
655 row.x += theFontMetrics(text_->labelFont(par)).
656 width(layout.labelsep);
658 row.x += row.label_hfill;
663 pos_type const endpos = row.endpos();
664 pos_type body_pos = par.beginOfBody();
666 && (body_pos > endpos || !par.isLineSeparator(body_pos - 1)))
669 ParagraphMetrics & pm = par_metrics_[pit];
670 Row::iterator cit = row.begin();
671 Row::iterator const cend = row.end();
672 for ( ; cit != cend; ++cit) {
673 if (row.label_hfill && cit->endpos == body_pos
674 && cit->type == Row::SPACE)
675 cit->dim.wid -= row.label_hfill * (nlh - 1);
676 if (!cit->inset || !cit->inset->isHfill())
678 if (pm.hfillExpansion(row, cit->pos))
679 cit->dim.wid = int(cit->pos >= body_pos ?
680 max(hfill, 5.0) : row.label_hfill);
683 // Cache the inset dimension.
684 bv_->coordCache().insets().add(cit->inset, cit->dim);
685 pm.setInsetDimension(cit->inset, cit->dim);
690 int TextMetrics::labelFill(pit_type const pit, Row const & row) const
692 Paragraph const & par = text_->getPar(pit);
693 LBUFERR(par.beginOfBody() > 0);
696 Row::const_iterator cit = row.begin();
697 Row::const_iterator const end = row.end();
698 // iterate over elements before main body (except the last one,
699 // which is extra space).
700 while (cit!= end && cit->endpos < par.beginOfBody()) {
705 docstring const & label = par.params().labelWidthString();
709 FontMetrics const & fm
710 = theFontMetrics(text_->labelFont(par));
712 return max(0, fm.width(label) - w);
717 // Not used, see TextMetrics::breakRow
718 // this needs special handling - only newlines count as a break point
719 static pos_type addressBreakPoint(pos_type i, Paragraph const & par)
721 pos_type const end = par.size();
724 if (par.isNewline(i))
732 int TextMetrics::labelEnd(pit_type const pit) const
734 // labelEnd is only needed if the layout fills a flushleft label.
735 if (text_->getPar(pit).layout().margintype != MARGIN_MANUAL)
737 // return the beginning of the body
738 return leftMargin(max_width_, pit);
744 * Calling Text::getFont is slow. While rebreaking we scan a
745 * paragraph from left to right calling getFont for every char. This
746 * simple class address this problem by hidding an optimization trick
747 * (not mine btw -AB): the font is reused in the whole font span. The
748 * class handles transparently the "hidden" (not part of the fontlist)
749 * label font (as getFont does).
755 FontIterator(TextMetrics const & tm,
756 Paragraph const & par, pit_type pit, pos_type pos)
757 : tm_(tm), par_(par), pit_(pit), pos_(pos),
758 font_(tm.displayFont(pit, pos)),
759 endspan_(par.fontSpan(pos).last),
760 bodypos_(par.beginOfBody())
764 Font const & operator*() const { return font_; }
767 FontIterator & operator++()
770 if (pos_ < par_.size() && (pos_ > endspan_ || pos_ == bodypos_)) {
771 font_ = tm_.displayFont(pit_, pos_);
772 endspan_ = par_.fontSpan(pos_).last;
778 Font * operator->() { return &font_; }
782 TextMetrics const & tm_;
784 Paragraph const & par_;
799 /** This is the function where the hard work is done. The code here is
800 * very sensitive to small changes :) Note that part of the
801 * intelligence is also in Row::shorten_if_needed
803 void TextMetrics::breakRow(Row & row, int const right_margin, pit_type const pit) const
805 Paragraph const & par = text_->getPar(pit);
806 pos_type const end = par.size();
807 pos_type const pos = row.pos();
808 int const width = max_width_ - right_margin;
809 pos_type const body_pos = par.beginOfBody();
811 row.dimension().wid = leftMargin(max_width_, pit, pos);
813 row.right_margin = right_margin;
815 if (pos >= end || row.width() > width) {
816 row.dimension().wid += right_margin;
821 ParagraphMetrics const & pm = par_metrics_[pit];
822 ParagraphList const & pars = text_->paragraphs();
825 //FIXME: As long as leftMargin() is not correctly implemented for
826 // MARGIN_RIGHT_ADDRESS_BOX, we should also not do this here.
827 // Otherwise, long rows will be painted off the screen.
828 if (par.layout().margintype == MARGIN_RIGHT_ADDRESS_BOX)
829 return addressBreakPoint(pos, par);
832 // check for possible inline completion
833 DocIterator const & inlineCompletionPos = bv_->inlineCompletionPos();
834 pos_type inlineCompletionLPos = -1;
835 if (inlineCompletionPos.inTexted()
836 && inlineCompletionPos.text() == text_
837 && inlineCompletionPos.pit() == pit) {
838 // draw logically behind the previous character
839 inlineCompletionLPos = inlineCompletionPos.pos() - 1;
842 // Now we iterate through until we reach the right margin
843 // or the end of the par, then build a representation of the row.
845 FontIterator fi = FontIterator(*this, par, pit, pos);
846 while (i < end && row.width() < width) {
847 char_type c = par.getChar(i);
848 // The most special cases are handled first.
849 if (par.isInset(i)) {
850 Inset const * ins = par.getInset(i);
851 Dimension dim = pm.insetDimension(ins);
852 row.add(i, ins, dim, *fi, par.lookupChange(i));
853 } else if (par.isLineSeparator(i)) {
854 // In theory, no inset has this property. If
855 // this is done, a new addSeparator which
856 // takes an inset as parameter should be
858 LATTEST(!par.isInset(i));
859 row.addSeparator(i, c, *fi, par.lookupChange(i));
860 } else if (c == '\t')
861 row.addSpace(i, theFontMetrics(*fi).width(from_ascii(" ")),
862 *fi, par.lookupChange(i));
864 row.add(i, c, *fi, par.lookupChange(i));
866 // end of paragraph marker
867 if (lyxrc.paragraph_markers
868 && i == end - 1 && size_type(pit + 1) < pars.size()) {
869 // enlarge the last character to hold the end-of-par marker
870 Font f(text_->layoutFont(pit));
871 f.fontInfo().setColor(Color_paragraphmarker);
872 row.addVirtual(i + 1, docstring(1, char_type(0x00B6)), f, Change());
875 // add inline completion width
876 if (inlineCompletionLPos == i &&
877 !bv_->inlineCompletion().empty()) {
879 f.fontInfo().setColor(Color_inlinecompletion);
880 row.addVirtual(i + 1, bv_->inlineCompletion(),
884 // Handle some situations that abruptly terminate the row
886 // - Before a display inset
887 // - After a display inset
888 Inset const * inset = 0;
890 || (i + 1 < end && (inset = par.getInset(i + 1))
892 || (!row.empty() && row.back().inset
893 && row.back().inset->display())) {
894 row.right_boundary(true);
902 // add the auto-hfill from label end to the body
903 if (body_pos && i == body_pos) {
904 FontMetrics const & fm = theFontMetrics(text_->labelFont(par));
907 && row.back().type == Row::SEPARATOR) {
911 int const add = max(fm.width(par.layout().labelsep),
912 labelEnd(pit) - row.width());
913 row.addSpace(j, add, *fi, par.lookupChange(i));
920 // if the row is too large, try to cut at last separator.
921 row.shorten_if_needed(body_pos, width);
923 // if the row ends with a separator that is not at end of
924 // paragraph, remove it
925 if (!row.empty() && row.back().type == Row::SEPARATOR
926 && row.endpos() < par.size())
929 // make sure that the RTL elements are in reverse ordering
932 row.dimension().wid += right_margin;
936 void TextMetrics::setRowHeight(Row & row, pit_type const pit,
937 bool topBottomSpace) const
939 Paragraph const & par = text_->getPar(pit);
940 // get the maximum ascent and the maximum descent
941 double layoutasc = 0;
942 double layoutdesc = 0;
943 double const dh = defaultRowHeight();
945 // ok, let us initialize the maxasc and maxdesc value.
946 // Only the fontsize count. The other properties
947 // are taken from the layoutfont. Nicer on the screen :)
948 Layout const & layout = par.layout();
950 // as max get the first character of this row then it can
951 // increase but not decrease the height. Just some point to
952 // start with so we don't have to do the assignment below too
954 Buffer const & buffer = bv_->buffer();
955 Font font = displayFont(pit, row.pos());
956 FontSize const tmpsize = font.fontInfo().size();
957 font.fontInfo() = text_->layoutFont(pit);
958 FontSize const size = font.fontInfo().size();
959 font.fontInfo().setSize(tmpsize);
961 FontInfo labelfont = text_->labelFont(par);
963 FontMetrics const & labelfont_metrics = theFontMetrics(labelfont);
964 FontMetrics const & fontmetrics = theFontMetrics(font);
966 // these are minimum values
967 double const spacing_val = layout.spacing.getValue()
968 * text_->spacing(par);
969 //lyxerr << "spacing_val = " << spacing_val << endl;
970 int maxasc = int(fontmetrics.maxAscent() * spacing_val);
971 int maxdesc = int(fontmetrics.maxDescent() * spacing_val);
973 // insets may be taller
974 ParagraphMetrics const & pm = par_metrics_[pit];
975 Row::const_iterator cit = row.begin();
976 Row::const_iterator cend = row.end();
977 for ( ; cit != cend; ++cit) {
979 Dimension const & dim = pm.insetDimension(cit->inset);
980 maxasc = max(maxasc, dim.ascent());
981 maxdesc = max(maxdesc, dim.descent());
985 // Check if any custom fonts are larger (Asger)
986 // This is not completely correct, but we can live with the small,
987 // cosmetic error for now.
991 par.highestFontInRange(row.pos(), row.endpos(), size);
992 if (maxsize > font.fontInfo().size()) {
993 // use standard paragraph font with the maximal size
994 FontInfo maxfont = font.fontInfo();
995 maxfont.setSize(maxsize);
996 FontMetrics const & maxfontmetrics = theFontMetrics(maxfont);
997 maxasc = max(maxasc, maxfontmetrics.maxAscent());
998 maxdesc = max(maxdesc, maxfontmetrics.maxDescent());
1001 // This is nicer with box insets:
1005 ParagraphList const & pars = text_->paragraphs();
1006 Inset const & inset = text_->inset();
1008 // is it a top line?
1009 if (row.pos() == 0 && topBottomSpace) {
1010 BufferParams const & bufparams = buffer.params();
1011 // some parskips VERY EASY IMPLEMENTATION
1012 if (bufparams.paragraph_separation == BufferParams::ParagraphSkipSeparation
1013 && !inset.getLayout().parbreakIsNewline()
1014 && !par.layout().parbreak_is_newline
1016 && ((layout.isParagraph() && par.getDepth() == 0)
1017 || (pars[pit - 1].layout().isParagraph()
1018 && pars[pit - 1].getDepth() == 0))) {
1019 maxasc += bufparams.getDefSkip().inPixels(*bv_);
1022 if (par.params().startOfAppendix())
1023 maxasc += int(3 * dh);
1025 // special code for the top label
1026 if (layout.labelIsAbove()
1027 && (!layout.isParagraphGroup() || text_->isFirstInSequence(pit))
1028 && !par.labelString().empty()) {
1030 labelfont_metrics.maxHeight()
1031 * layout.spacing.getValue()
1032 * text_->spacing(par)
1033 + (layout.topsep + layout.labelbottomsep) * dh);
1036 // Add the layout spaces, for example before and after
1037 // a section, or between the items of a itemize or enumerate
1040 pit_type prev = text_->depthHook(pit, par.getDepth());
1041 Paragraph const & prevpar = pars[prev];
1043 && prevpar.layout() == layout
1044 && prevpar.getDepth() == par.getDepth()
1045 && prevpar.getLabelWidthString()
1046 == par.getLabelWidthString()) {
1047 layoutasc = layout.itemsep * dh;
1048 } else if (pit != 0 || row.pos() != 0) {
1049 if (layout.topsep > 0)
1050 layoutasc = layout.topsep * dh;
1053 prev = text_->outerHook(pit);
1054 if (prev != pit_type(pars.size())) {
1055 maxasc += int(pars[prev].layout().parsep * dh);
1056 } else if (pit != 0) {
1057 Paragraph const & prevpar = pars[pit - 1];
1058 if (prevpar.getDepth() != 0 ||
1059 prevpar.layout() == layout) {
1060 maxasc += int(layout.parsep * dh);
1065 // is it a bottom line?
1066 if (row.endpos() >= par.size() && topBottomSpace) {
1067 // add the layout spaces, for example before and after
1068 // a section, or between the items of a itemize or enumerate
1070 pit_type nextpit = pit + 1;
1071 if (nextpit != pit_type(pars.size())) {
1072 pit_type cpit = pit;
1074 if (pars[cpit].getDepth() > pars[nextpit].getDepth()) {
1075 double usual = pars[cpit].layout().bottomsep * dh;
1077 cpit = text_->depthHook(cpit, pars[nextpit].getDepth());
1078 if (pars[cpit].layout() != pars[nextpit].layout()
1079 || pars[nextpit].getLabelWidthString() != pars[cpit].getLabelWidthString())
1080 unusual = pars[cpit].layout().bottomsep * dh;
1081 layoutdesc = max(unusual, usual);
1082 } else if (pars[cpit].getDepth() == pars[nextpit].getDepth()) {
1083 if (pars[cpit].layout() != pars[nextpit].layout()
1084 || pars[nextpit].getLabelWidthString() != pars[cpit].getLabelWidthString())
1085 layoutdesc = int(pars[cpit].layout().bottomsep * dh);
1090 // incalculate the layout spaces
1091 maxasc += int(layoutasc * 2 / (2 + pars[pit].getDepth()));
1092 maxdesc += int(layoutdesc * 2 / (2 + pars[pit].getDepth()));
1094 // FIXME: the correct way is to do the following is to move the
1095 // following code in another method specially tailored for the
1096 // main Text. The following test is thus bogus.
1097 // Top and bottom margin of the document (only at top-level)
1098 if (main_text_ && topBottomSpace) {
1099 if (pit == 0 && row.pos() == 0)
1101 if (pit + 1 == pit_type(pars.size()) &&
1102 row.endpos() == par.size() &&
1103 !(row.endpos() > 0 && par.isNewline(row.endpos() - 1)))
1107 row.dimension().asc = maxasc + labeladdon;
1108 row.dimension().des = maxdesc;
1112 // x is an absolute screen coord
1113 // returns the column near the specified x-coordinate of the row
1114 // x is set to the real beginning of this column
1115 pos_type TextMetrics::getColumnNearX(pit_type const pit,
1116 Row const & row, int & x, bool & boundary) const
1120 pos_type pos = row.pos();
1121 if (row.x >= x || row.empty())
1123 else if (x >= row.width() - row.right_margin) {
1124 x = row.width() - row.right_margin;
1125 pos = row.back().endpos;
1128 Row::const_iterator cit = row.begin();
1129 Row::const_iterator cend = row.end();
1130 for ( ; cit != cend; ++cit) {
1131 if (w <= x && w + cit->width() > x) {
1132 double x_offset = x - w;
1133 pos = cit->x2pos(x_offset);
1139 if (cit == row.end())
1140 lyxerr << "NOT FOUND!! x=" << x
1141 << ", wid=" << row.width() << endl;
1142 /** This tests for the case where the cursor is placed
1143 * just before a font direction change. See comment on
1144 * the boundary_ member in DocIterator.h to understand
1145 * how bounddary helps here.
1147 else if (pos == cit->endpos
1148 && cit + 1 != row.end()
1149 && cit->font.isVisibleRightToLeft() != (cit + 1)->font.isVisibleRightToLeft())
1153 /** This tests for the case where the cursor is set at the end
1154 * of a row which has been broken due to a display inset on
1155 * next row. This is indicated by Row::right_boundary.
1157 if (!row.empty() && pos == row.back().endpos
1158 && row.back().endpos == row.endpos())
1159 boundary = row.right_boundary();
1161 #if !defined(KEEP_OLD_METRICS_CODE)
1162 return pos - row.pos();
1164 Buffer const & buffer = bv_->buffer();
1166 /// For the main Text, it is possible that this pit is not
1167 /// yet in the CoordCache when moving cursor up.
1168 /// x Paragraph coordinate is always 0 for main text anyway.
1169 int const xo = origin_.x_;
1171 Paragraph const & par = text_->getPar(pit);
1173 bidi.computeTables(par, buffer, row);
1175 pos_type vc = row.pos();
1176 pos_type const end = row.endpos();
1178 Layout const & layout = par.layout();
1180 bool left_side = false;
1182 pos_type body_pos = par.beginOfBody();
1184 double tmpx = row.x;
1185 double last_tmpx = tmpx;
1188 (body_pos > end || !par.isLineSeparator(body_pos - 1)))
1191 // check for empty row
1193 x2 = int(tmpx) + xo;
1197 // This (rtl_support test) is not needed, but gives
1198 // some speedup if rtl_support == false
1199 bool const lastrow = lyxrc.rtl_support && row.endpos() == par.size();
1201 // If lastrow is false, we don't need to compute
1202 // the value of rtl.
1203 bool const rtl_on_lastrow = lastrow ? text_->isRTL(par) : false;
1205 while (vc < end && tmpx <= x2) {
1206 c = bidi.vis2log(vc);
1208 if (body_pos > 0 && c == body_pos - 1) {
1209 FontMetrics const & fm = theFontMetrics(
1210 text_->labelFont(par));
1211 tmpx += row.label_hfill + fm.width(layout.labelsep);
1212 if (par.isLineSeparator(body_pos - 1))
1213 tmpx -= singleWidth(pit, body_pos - 1);
1216 tmpx += singleWidth(pit, c);
1217 if (par.isSeparator(c) && c >= body_pos)
1218 tmpx += row.separator;
1222 if ((tmpx + last_tmpx) / 2 > x2) {
1227 // This shouldn't happen. But we can reset and try to continue.
1228 LASSERT(vc <= end, vc = end);
1230 bool boundary2 = false;
1233 ((rtl_on_lastrow && left_side && vc == row.pos() && x2 < tmpx - 5) ||
1234 (!rtl_on_lastrow && !left_side && vc == end && x2 > tmpx + 5))) {
1235 if (!par.isNewline(end - 1))
1237 } else if (vc == row.pos()) {
1238 c = bidi.vis2log(vc);
1239 if (bidi.level(c) % 2 == 1)
1242 c = bidi.vis2log(vc - 1);
1243 bool const rtl = (bidi.level(c) % 2 == 1);
1244 if (left_side == rtl) {
1246 boundary2 = isRTLBoundary(pit, c);
1250 // I believe this code is not needed anymore (Jug 20050717)
1252 // The following code is necessary because the cursor position past
1253 // the last char in a row is logically equivalent to that before
1254 // the first char in the next row. That's why insets causing row
1255 // divisions -- Newline and display-style insets -- must be treated
1256 // specially, so cursor up/down doesn't get stuck in an air gap -- MV
1257 // Newline inset, air gap below:
1258 if (row.pos() < end && c >= end && par.isNewline(end - 1)) {
1259 if (bidi.level(end -1) % 2 == 0)
1260 tmpx -= singleWidth(pit, end - 1);
1262 tmpx += singleWidth(pit, end - 1);
1266 // Air gap above display inset:
1267 if (row.pos() < end && c >= end && end < par.size()
1268 && par.isInset(end) && par.getInset(end)->display()) {
1271 // Air gap below display inset:
1272 if (row.pos() < end && c >= end && par.isInset(end - 1)
1273 && par.getInset(end - 1)->display()) {
1278 x2 = int(tmpx) + xo;
1279 pos_type const col = c - row.pos();
1281 if (abs(x2 - x) > 0.1 || boundary != boundary
1283 lyxerr << "new=(x=" << x << ", b=" << boundary << ", p=" << pos << "), "
1284 << "old=(x=" << x2 << ", b=" << boundary2 << ", p=" << c << "), " << row;
1287 if (!c || end == par.size())
1290 if (c==end && !par.isLineSeparator(c-1) && !par.isNewline(c-1)) {
1295 return min(col, end - 1 - row.pos());
1300 pos_type TextMetrics::x2pos(pit_type pit, int row, int x) const
1302 // We play safe and use parMetrics(pit) to make sure the
1303 // ParagraphMetrics will be redone and OK to use if needed.
1304 // Otherwise we would use an empty ParagraphMetrics in
1305 // upDownInText() while in selection mode.
1306 ParagraphMetrics const & pm = parMetrics(pit);
1308 LBUFERR(row < int(pm.rows().size()));
1310 Row const & r = pm.rows()[row];
1311 return r.pos() + getColumnNearX(pit, r, x, bound);
1315 void TextMetrics::newParMetricsDown()
1317 pair<pit_type, ParagraphMetrics> const & last = *par_metrics_.rbegin();
1318 pit_type const pit = last.first + 1;
1319 if (pit == int(text_->paragraphs().size()))
1322 // do it and update its position.
1324 par_metrics_[pit].setPosition(last.second.position()
1325 + last.second.descent() + par_metrics_[pit].ascent());
1329 void TextMetrics::newParMetricsUp()
1331 pair<pit_type, ParagraphMetrics> const & first = *par_metrics_.begin();
1332 if (first.first == 0)
1335 pit_type const pit = first.first - 1;
1336 // do it and update its position.
1338 par_metrics_[pit].setPosition(first.second.position()
1339 - first.second.ascent() - par_metrics_[pit].descent());
1342 // y is screen coordinate
1343 pit_type TextMetrics::getPitNearY(int y)
1345 LASSERT(!text_->paragraphs().empty(), return -1);
1346 LASSERT(!par_metrics_.empty(), return -1);
1347 LYXERR(Debug::DEBUG, "y: " << y << " cache size: " << par_metrics_.size());
1349 // look for highest numbered paragraph with y coordinate less than given y
1352 ParMetricsCache::const_iterator it = par_metrics_.begin();
1353 ParMetricsCache::const_iterator et = par_metrics_.end();
1354 ParMetricsCache::const_iterator last = et;
1357 ParagraphMetrics const & pm = it->second;
1359 if (y < it->second.position() - int(pm.ascent())) {
1360 // We are looking for a position that is before the first paragraph in
1361 // the cache (which is in priciple off-screen, that is before the
1364 // We are already at the first paragraph in the inset.
1366 // OK, this is the paragraph we are looking for.
1367 pit = it->first - 1;
1372 ParagraphMetrics const & pm_last = par_metrics_[last->first];
1374 if (y >= last->second.position() + int(pm_last.descent())) {
1375 // We are looking for a position that is after the last paragraph in
1376 // the cache (which is in priciple off-screen), that is before the
1378 pit = last->first + 1;
1379 if (pit == int(text_->paragraphs().size()))
1380 // We are already at the last paragraph in the inset.
1382 // OK, this is the paragraph we are looking for.
1383 newParMetricsDown();
1387 for (; it != et; ++it) {
1388 LYXERR(Debug::DEBUG, "examining: pit: " << it->first
1389 << " y: " << it->second.position());
1391 ParagraphMetrics const & pm = par_metrics_[it->first];
1393 if (it->first >= pit && int(it->second.position()) - int(pm.ascent()) <= y) {
1395 yy = it->second.position();
1399 LYXERR(Debug::DEBUG, "found best y: " << yy << " for pit: " << pit);
1405 Row const & TextMetrics::getPitAndRowNearY(int & y, pit_type & pit,
1406 bool assert_in_view, bool up)
1408 ParagraphMetrics const & pm = par_metrics_[pit];
1410 int yy = pm.position() - pm.ascent();
1411 LBUFERR(!pm.rows().empty());
1412 RowList::const_iterator rit = pm.rows().begin();
1413 RowList::const_iterator rlast = pm.rows().end();
1415 for (; rit != rlast; yy += rit->height(), ++rit)
1416 if (yy + rit->height() > y)
1419 if (assert_in_view) {
1420 if (!up && yy + rit->height() > y) {
1421 if (rit != pm.rows().begin()) {
1424 } else if (pit != 0) {
1427 ParagraphMetrics const & pm2 = par_metrics_[pit];
1428 rit = pm2.rows().end();
1432 } else if (up && yy != y) {
1434 y = yy + rit->height();
1436 } else if (pit < int(text_->paragraphs().size()) - 1) {
1438 newParMetricsDown();
1439 ParagraphMetrics const & pm2 = par_metrics_[pit];
1440 rit = pm2.rows().begin();
1449 // x,y are absolute screen coordinates
1450 // sets cursor recursively descending into nested editable insets
1451 Inset * TextMetrics::editXY(Cursor & cur, int x, int y,
1452 bool assert_in_view, bool up)
1454 if (lyxerr.debugging(Debug::WORKAREA)) {
1455 LYXERR0("TextMetrics::editXY(cur, " << x << ", " << y << ")");
1456 cur.bv().coordCache().dump();
1458 pit_type pit = getPitNearY(y);
1459 LASSERT(pit != -1, return 0);
1461 int yy = y; // is modified by getPitAndRowNearY
1462 Row const & row = getPitAndRowNearY(yy, pit, assert_in_view, up);
1466 // Do we cover an inset?
1467 InsetList::InsetTable * it = checkInsetHit(pit, x, yy);
1470 // No inset, set position in the text
1471 bool bound = false; // is modified by getColumnNearX
1472 int xx = x; // is modified by getColumnNearX
1473 cur.pos() = row.pos()
1474 + getColumnNearX(pit, row, xx, bound);
1475 cur.boundary(bound);
1476 cur.setCurrentFont();
1481 Inset * inset = it->inset;
1482 //lyxerr << "inset " << inset << " hit at x: " << x << " y: " << y << endl;
1484 // Set position in front of inset
1485 cur.pos() = it->pos;
1486 cur.boundary(false);
1489 // Try to descend recursively inside the inset.
1490 inset = inset->editXY(cur, x, yy);
1492 if (cur.top().text() == text_)
1493 cur.setCurrentFont();
1498 void TextMetrics::setCursorFromCoordinates(Cursor & cur, int const x, int const y)
1500 LASSERT(text_ == cur.text(), return);
1501 pit_type const pit = getPitNearY(y);
1502 LASSERT(pit != -1, return);
1504 ParagraphMetrics const & pm = par_metrics_[pit];
1506 int yy = pm.position() - pm.ascent();
1507 LYXERR(Debug::DEBUG, "x: " << x << " y: " << y <<
1508 " pit: " << pit << " yy: " << yy);
1511 LBUFERR(pm.rows().size());
1512 for (; r < int(pm.rows().size()) - 1; ++r) {
1513 Row const & row = pm.rows()[r];
1514 if (int(yy + row.height()) > y)
1519 Row const & row = pm.rows()[r];
1521 LYXERR(Debug::DEBUG, "row " << r << " from pos: " << row.pos());
1525 pos_type const pos = row.pos() + getColumnNearX(pit, row, xx, bound);
1527 LYXERR(Debug::DEBUG, "setting cursor pit: " << pit << " pos: " << pos);
1529 text_->setCursor(cur, pit, pos, true, bound);
1530 // remember new position.
1535 //takes screen x,y coordinates
1536 InsetList::InsetTable * TextMetrics::checkInsetHit(pit_type pit, int x, int y)
1538 Paragraph const & par = text_->paragraphs()[pit];
1539 ParagraphMetrics const & pm = par_metrics_[pit];
1541 LYXERR(Debug::DEBUG, "x: " << x << " y: " << y << " pit: " << pit);
1543 InsetList::const_iterator iit = par.insetList().begin();
1544 InsetList::const_iterator iend = par.insetList().end();
1545 for (; iit != iend; ++iit) {
1546 Inset * inset = iit->inset;
1548 LYXERR(Debug::DEBUG, "examining inset " << inset);
1550 if (!bv_->coordCache().getInsets().has(inset)) {
1551 LYXERR(Debug::DEBUG, "inset has no cached position");
1555 Dimension const & dim = pm.insetDimension(inset);
1556 Point p = bv_->coordCache().getInsets().xy(inset);
1558 LYXERR(Debug::DEBUG, "xo: " << p.x_ << "..." << p.x_ + dim.wid
1559 << " yo: " << p.y_ - dim.asc << "..." << p.y_ + dim.des);
1561 if (x >= p.x_ && x <= p.x_ + dim.wid
1562 && y >= p.y_ - dim.asc && y <= p.y_ + dim.des) {
1563 LYXERR(Debug::DEBUG, "Hit inset: " << inset);
1564 return const_cast<InsetList::InsetTable *>(&(*iit));
1568 LYXERR(Debug::DEBUG, "No inset hit. ");
1573 //takes screen x,y coordinates
1574 Inset * TextMetrics::checkInsetHit(int x, int y)
1576 pit_type const pit = getPitNearY(y);
1577 LASSERT(pit != -1, return 0);
1578 InsetList::InsetTable * it = checkInsetHit(pit, x, y);
1587 int TextMetrics::cursorX(CursorSlice const & sl,
1588 bool boundary) const
1590 LASSERT(sl.text() == text_, return 0);
1591 pit_type const pit = sl.pit();
1592 pos_type pos = sl.pos();
1594 ParagraphMetrics const & pm = par_metrics_[pit];
1595 if (pm.rows().empty())
1597 Row const & row = pm.getRow(sl.pos(), boundary);
1602 * When boundary is true, position is on the row element (pos, endpos)
1604 * pos < pos <= endpos
1605 * whereas, when boundary is false, the test is
1606 * pos <= pos < endpos
1607 * The correction below allows to handle both cases.
1609 int const boundary_corr = (boundary && pos) ? -1 : 0;
1612 || (row.begin()->font.isRightToLeft()
1613 && pos == row.begin()->endpos))
1616 Row::const_iterator cit = row.begin();
1617 for ( ; cit != row.end() ; ++cit) {
1618 if (pos + boundary_corr >= cit->pos
1619 && pos + boundary_corr < cit->endpos) {
1620 x += cit->pos2x(pos);
1626 if (cit == row.end()
1627 && (row.back().font.isRightToLeft() || pos != row.back().endpos))
1628 lyxerr << "NOT FOUND!"
1629 << "pos=" << pos << "(" << boundary_corr << ")" << "\n"
1632 #ifdef KEEP_OLD_METRICS_CODE
1633 Paragraph const & par = text_->paragraphs()[pit];
1635 // Correct position in front of big insets
1636 bool const boundary_correction = pos != 0 && boundary;
1637 if (boundary_correction)
1640 pos_type cursor_vpos = 0;
1642 Buffer const & buffer = bv_->buffer();
1645 bidi.computeTables(par, buffer, row);
1647 pos_type const row_pos = row.pos();
1648 pos_type const end = row.endpos();
1649 // Spaces at logical line breaks in bidi text must be skipped during
1650 // cursor positioning. However, they may appear visually in the middle
1651 // of a row; they must be skipped, wherever they are...
1652 // * logically "abc_[HEBREW_\nHEBREW]"
1653 // * visually "abc_[_WERBEH\nWERBEH]"
1654 pos_type skipped_sep_vpos = -1;
1657 cursor_vpos = row_pos;
1658 else if (pos >= end)
1659 cursor_vpos = text_->isRTL(par) ? row_pos : end;
1660 else if (pos > row_pos && pos >= end)
1661 //FIXME: this code is never reached!
1662 // (see http://www.lyx.org/trac/changeset/8251)
1663 // Place cursor after char at (logical) position pos - 1
1664 cursor_vpos = (bidi.level(pos - 1) % 2 == 0)
1665 ? bidi.log2vis(pos - 1) + 1 : bidi.log2vis(pos - 1);
1667 // Place cursor before char at (logical) position pos
1668 cursor_vpos = (bidi.level(pos) % 2 == 0)
1669 ? bidi.log2vis(pos) : bidi.log2vis(pos) + 1;
1671 pos_type body_pos = par.beginOfBody();
1673 (body_pos > end || !par.isLineSeparator(body_pos - 1)))
1676 // check for possible inline completion in this row
1677 DocIterator const & inlineCompletionPos = bv_->inlineCompletionPos();
1678 pos_type inlineCompletionVPos = -1;
1679 if (inlineCompletionPos.inTexted()
1680 && inlineCompletionPos.text() == text_
1681 && inlineCompletionPos.pit() == pit
1682 && inlineCompletionPos.pos() - 1 >= row_pos
1683 && inlineCompletionPos.pos() - 1 < end) {
1684 // draw logically behind the previous character
1685 inlineCompletionVPos = bidi.log2vis(inlineCompletionPos.pos() - 1);
1688 // Use font span to speed things up, see below
1692 // If the last logical character is a separator, skip it, unless
1693 // it's in the last row of a paragraph; see skipped_sep_vpos declaration
1694 if (end > 0 && end < par.size() && par.isSeparator(end - 1))
1695 skipped_sep_vpos = bidi.log2vis(end - 1);
1697 if (lyxrc.paragraph_markers && text_->isRTL(par)) {
1698 ParagraphList const & pars_ = text_->paragraphs();
1699 if (size_type(pit + 1) < pars_.size()) {
1700 FontInfo f(text_->layoutFont(pit));
1701 docstring const s = docstring(1, char_type(0x00B6));
1702 x2 += theFontMetrics(f).width(s);
1706 // Inline completion RTL special case row_pos == cursor_pos:
1707 // "__|b" => cursor_pos is right of __
1708 if (row_pos == inlineCompletionVPos && row_pos == cursor_vpos) {
1709 font = displayFont(pit, row_pos + 1);
1710 docstring const & completion = bv_->inlineCompletion();
1711 if (font.isRightToLeft() && completion.length() > 0)
1712 x2 += theFontMetrics(font.fontInfo()).width(completion);
1715 for (pos_type vpos = row_pos; vpos < cursor_vpos; ++vpos) {
1716 // Skip the separator which is at the logical end of the row
1717 if (vpos == skipped_sep_vpos)
1719 pos_type pos = bidi.vis2log(vpos);
1720 if (body_pos > 0 && pos == body_pos - 1) {
1721 FontMetrics const & labelfm = theFontMetrics(
1722 text_->labelFont(par));
1723 x2 += row.label_hfill + labelfm.width(par.layout().labelsep);
1724 if (par.isLineSeparator(body_pos - 1))
1725 x2 -= singleWidth(pit, body_pos - 1);
1728 // Use font span to speed things up, see above
1729 if (pos < font_span.first || pos > font_span.last) {
1730 font_span = par.fontSpan(pos);
1731 font = displayFont(pit, pos);
1734 x2 += pm.singleWidth(pos, font);
1736 // Inline completion RTL case:
1737 // "a__|b", __ of b => non-boundary a-pos is right of __
1738 if (vpos + 1 == inlineCompletionVPos
1739 && (vpos + 1 < cursor_vpos || !boundary_correction)) {
1740 font = displayFont(pit, vpos + 1);
1741 docstring const & completion = bv_->inlineCompletion();
1742 if (font.isRightToLeft() && completion.length() > 0)
1743 x2 += theFontMetrics(font.fontInfo()).width(completion);
1746 // Inline completion LTR case:
1747 // "b|__a", __ of b => non-boundary a-pos is in front of __
1748 if (vpos == inlineCompletionVPos
1749 && (vpos + 1 < cursor_vpos || boundary_correction)) {
1750 font = displayFont(pit, vpos);
1751 docstring const & completion = bv_->inlineCompletion();
1752 if (!font.isRightToLeft() && completion.length() > 0)
1753 x2 += theFontMetrics(font.fontInfo()).width(completion);
1756 if (par.isSeparator(pos) && pos >= body_pos)
1757 x2 += row.separator;
1760 // see correction above
1761 if (boundary_correction) {
1762 if (isRTL(sl, boundary))
1763 x2 -= singleWidth(pit, pos);
1765 x2 += singleWidth(pit, pos);
1768 if (abs(x2 - x) > 0.01) {
1769 lyxerr << "cursorX: x2=" << x2 << ", x=" << x;
1770 if (cit == row.end())
1771 lyxerr << "Element not found for "
1772 << pos - boundary_corr << "(" << boundary_corr << ")";
1774 lyxerr << " in [" << cit->pos << "/"
1775 << pos - boundary_corr << "(" << boundary_corr << ")"
1776 << "/" << cit->endpos << "] of " << *cit << "\n";
1777 lyxerr << row <<endl;
1785 int TextMetrics::cursorY(CursorSlice const & sl, bool boundary) const
1787 //lyxerr << "TextMetrics::cursorY: boundary: " << boundary << endl;
1788 ParagraphMetrics const & pm = par_metrics_[sl.pit()];
1789 if (pm.rows().empty())
1793 h -= par_metrics_[0].rows()[0].ascent();
1794 for (pit_type pit = 0; pit < sl.pit(); ++pit) {
1795 h += par_metrics_[pit].height();
1798 if (pos && boundary)
1800 size_t const rend = pm.pos2row(pos);
1801 for (size_t rit = 0; rit != rend; ++rit)
1802 h += pm.rows()[rit].height();
1803 h += pm.rows()[rend].ascent();
1808 // the cursor set functions have a special mechanism. When they
1809 // realize you left an empty paragraph, they will delete it.
1811 bool TextMetrics::cursorHome(Cursor & cur)
1813 LASSERT(text_ == cur.text(), return false);
1814 ParagraphMetrics const & pm = par_metrics_[cur.pit()];
1815 Row const & row = pm.getRow(cur.pos(),cur.boundary());
1816 return text_->setCursor(cur, cur.pit(), row.pos());
1820 bool TextMetrics::cursorEnd(Cursor & cur)
1822 LASSERT(text_ == cur.text(), return false);
1823 // if not on the last row of the par, put the cursor before
1824 // the final space exept if I have a spanning inset or one string
1825 // is so long that we force a break.
1826 pos_type end = cur.textRow().endpos();
1828 // empty text, end-1 is no valid position
1830 bool boundary = false;
1831 if (end != cur.lastpos()) {
1832 if (!cur.paragraph().isLineSeparator(end-1)
1833 && !cur.paragraph().isNewline(end-1))
1838 return text_->setCursor(cur, cur.pit(), end, true, boundary);
1842 void TextMetrics::deleteLineForward(Cursor & cur)
1844 LASSERT(text_ == cur.text(), return);
1845 if (cur.lastpos() == 0) {
1846 // Paragraph is empty, so we just go forward
1847 text_->cursorForward(cur);
1850 cur.setSelection(true); // to avoid deletion
1853 // What is this test for ??? (JMarc)
1854 if (!cur.selection())
1855 text_->deleteWordForward(cur);
1857 cap::cutSelection(cur, true, false);
1858 cur.checkBufferStructure();
1863 bool TextMetrics::isLastRow(pit_type pit, Row const & row) const
1865 ParagraphList const & pars = text_->paragraphs();
1866 return row.endpos() >= pars[pit].size()
1867 && pit + 1 == pit_type(pars.size());
1871 bool TextMetrics::isFirstRow(pit_type pit, Row const & row) const
1873 return row.pos() == 0 && pit == 0;
1877 int TextMetrics::leftMargin(int max_width, pit_type pit) const
1879 return leftMargin(max_width, pit, text_->paragraphs()[pit].size());
1883 int TextMetrics::leftMargin(int max_width,
1884 pit_type const pit, pos_type const pos) const
1886 ParagraphList const & pars = text_->paragraphs();
1888 LASSERT(pit >= 0, return 0);
1889 LASSERT(pit < int(pars.size()), return 0);
1890 Paragraph const & par = pars[pit];
1891 LASSERT(pos >= 0, return 0);
1892 LASSERT(pos <= par.size(), return 0);
1893 Buffer const & buffer = bv_->buffer();
1894 //lyxerr << "TextMetrics::leftMargin: pit: " << pit << " pos: " << pos << endl;
1895 DocumentClass const & tclass = buffer.params().documentClass();
1896 Layout const & layout = par.layout();
1898 docstring parindent = layout.parindent;
1902 if (text_->isMainText())
1903 l_margin += bv_->leftMargin();
1905 l_margin += theFontMetrics(buffer.params().getFont()).signedWidth(
1906 tclass.leftmargin());
1908 if (par.getDepth() != 0) {
1909 // find the next level paragraph
1910 pit_type newpar = text_->outerHook(pit);
1911 if (newpar != pit_type(pars.size())) {
1912 if (pars[newpar].layout().isEnvironment()) {
1913 l_margin = leftMargin(max_width, newpar);
1914 // Remove the parindent that has been added
1915 // if the paragraph was empty.
1916 if (pars[newpar].empty()) {
1917 docstring pi = pars[newpar].layout().parindent;
1918 l_margin -= theFontMetrics(
1919 buffer.params().getFont()).signedWidth(pi);
1922 if (tclass.isDefaultLayout(par.layout())
1923 || tclass.isPlainLayout(par.layout())) {
1924 if (pars[newpar].params().noindent())
1927 parindent = pars[newpar].layout().parindent;
1932 // This happens after sections or environments in standard classes.
1933 // We have to check the previous layout at same depth.
1934 if (tclass.isDefaultLayout(par.layout()) && pit > 0
1935 && pars[pit - 1].getDepth() >= par.getDepth()) {
1936 pit_type prev = text_->depthHook(pit, par.getDepth());
1937 if (pars[prev < pit ? prev : pit - 1].layout().nextnoindent)
1941 FontInfo const labelfont = text_->labelFont(par);
1942 FontMetrics const & labelfont_metrics = theFontMetrics(labelfont);
1944 switch (layout.margintype) {
1945 case MARGIN_DYNAMIC:
1946 if (!layout.leftmargin.empty()) {
1947 l_margin += theFontMetrics(buffer.params().getFont()).signedWidth(
1950 if (!par.labelString().empty()) {
1951 l_margin += labelfont_metrics.signedWidth(layout.labelindent);
1952 l_margin += labelfont_metrics.width(par.labelString());
1953 l_margin += labelfont_metrics.width(layout.labelsep);
1957 case MARGIN_MANUAL: {
1958 l_margin += labelfont_metrics.signedWidth(layout.labelindent);
1959 // The width of an empty par, even with manual label, should be 0
1960 if (!par.empty() && pos >= par.beginOfBody()) {
1961 if (!par.getLabelWidthString().empty()) {
1962 docstring labstr = par.getLabelWidthString();
1963 l_margin += labelfont_metrics.width(labstr);
1964 l_margin += labelfont_metrics.width(layout.labelsep);
1970 case MARGIN_STATIC: {
1971 l_margin += theFontMetrics(buffer.params().getFont()).
1972 signedWidth(layout.leftmargin) * 4 / (par.getDepth() + 4);
1976 case MARGIN_FIRST_DYNAMIC:
1977 if (layout.labeltype == LABEL_MANUAL) {
1978 // if we are at position 0, we are never in the body
1979 if (pos > 0 && pos >= par.beginOfBody())
1980 l_margin += labelfont_metrics.signedWidth(layout.leftmargin);
1982 l_margin += labelfont_metrics.signedWidth(layout.labelindent);
1984 // Special case to fix problems with
1986 || (layout.labeltype == LABEL_STATIC
1987 && layout.latextype == LATEX_ENVIRONMENT
1988 && !text_->isFirstInSequence(pit))) {
1989 l_margin += labelfont_metrics.signedWidth(layout.leftmargin);
1990 } else if (!layout.labelIsAbove()) {
1991 l_margin += labelfont_metrics.signedWidth(layout.labelindent);
1992 l_margin += labelfont_metrics.width(layout.labelsep);
1993 l_margin += labelfont_metrics.width(par.labelString());
1997 case MARGIN_RIGHT_ADDRESS_BOX: {
1999 // The left margin depends on the widest row in this paragraph.
2000 // This code is wrong because it depends on the rows, but at the
2001 // same time this function is used in redoParagraph to construct
2003 ParagraphMetrics const & pm = par_metrics_[pit];
2004 RowList::const_iterator rit = pm.rows().begin();
2005 RowList::const_iterator end = pm.rows().end();
2006 int minfill = max_width;
2007 for ( ; rit != end; ++rit)
2008 if (rit->fill() < minfill)
2009 minfill = rit->fill();
2010 l_margin += theFontMetrics(buffer.params().getFont()).signedWidth(layout.leftmargin);
2011 l_margin += minfill;
2013 // also wrong, but much shorter.
2014 l_margin += max_width / 2;
2019 if (!par.params().leftIndent().zero())
2020 l_margin += par.params().leftIndent().inPixels(max_width);
2024 if (par.params().align() == LYX_ALIGN_LAYOUT)
2025 align = layout.align;
2027 align = par.params().align();
2029 // set the correct parindent
2031 && (layout.labeltype == LABEL_NO_LABEL
2032 || layout.labeltype == LABEL_ABOVE
2033 || layout.labeltype == LABEL_CENTERED
2034 || (layout.labeltype == LABEL_STATIC
2035 && layout.latextype == LATEX_ENVIRONMENT
2036 && !text_->isFirstInSequence(pit)))
2037 && (align == LYX_ALIGN_BLOCK || align == LYX_ALIGN_LEFT)
2038 && !par.params().noindent()
2039 // in some insets, paragraphs are never indented
2040 && !text_->inset().neverIndent()
2041 // display style insets are always centered, omit indentation
2044 && par.getInset(pos)->display())
2045 && (!(tclass.isDefaultLayout(par.layout())
2046 || tclass.isPlainLayout(par.layout()))
2047 || buffer.params().paragraph_separation
2048 == BufferParams::ParagraphIndentSeparation)) {
2049 // use the parindent of the layout when the
2050 // default indentation is used otherwise use
2051 // the indentation set in the document
2053 if (buffer.params().getIndentation().asLyXCommand() == "default")
2054 l_margin += theFontMetrics(
2055 buffer.params().getFont()).signedWidth(parindent);
2057 l_margin += buffer.params().getIndentation().inPixels(*bv_);
2064 #ifdef KEEP_OLD_METRICS_CODE
2065 int TextMetrics::singleWidth(pit_type pit, pos_type pos) const
2067 ParagraphMetrics const & pm = par_metrics_[pit];
2069 return pm.singleWidth(pos, displayFont(pit, pos));
2073 void TextMetrics::draw(PainterInfo & pi, int x, int y) const
2075 if (par_metrics_.empty())
2081 ParMetricsCache::iterator it = par_metrics_.begin();
2082 ParMetricsCache::iterator const pm_end = par_metrics_.end();
2083 y -= it->second.ascent();
2084 for (; it != pm_end; ++it) {
2085 ParagraphMetrics const & pmi = it->second;
2087 pit_type const pit = it->first;
2088 // Save the paragraph position in the cache.
2089 it->second.setPosition(y);
2090 drawParagraph(pi, pit, x, y);
2096 void TextMetrics::drawParagraph(PainterInfo & pi, pit_type pit, int x, int y) const
2098 BufferParams const & bparams = bv_->buffer().params();
2099 ParagraphMetrics const & pm = par_metrics_[pit];
2100 if (pm.rows().empty())
2104 bool const original_drawing_state = pi.pain.isDrawingEnabled();
2105 int const ww = bv_->workHeight();
2106 size_t const nrows = pm.rows().size();
2108 Cursor const & cur = bv_->cursor();
2109 DocIterator sel_beg = cur.selectionBegin();
2110 DocIterator sel_end = cur.selectionEnd();
2111 bool selection = cur.selection()
2112 // This is our text.
2113 && cur.text() == text_
2114 // if the anchor is outside, this is not our selection
2115 && cur.normalAnchor().text() == text_
2116 && pit >= sel_beg.pit() && pit <= sel_end.pit();
2118 // We store the begin and end pos of the selection relative to this par
2119 DocIterator sel_beg_par = cur.selectionBegin();
2120 DocIterator sel_end_par = cur.selectionEnd();
2122 // We care only about visible selection.
2124 if (pit != sel_beg.pit()) {
2125 sel_beg_par.pit() = pit;
2126 sel_beg_par.pos() = 0;
2128 if (pit != sel_end.pit()) {
2129 sel_end_par.pit() = pit;
2130 sel_end_par.pos() = sel_end_par.lastpos();
2134 for (size_t i = 0; i != nrows; ++i) {
2136 Row const & row = pm.rows()[i];
2140 bool const inside = (y + row.descent() >= 0
2141 && y - row.ascent() < ww);
2142 // It is not needed to draw on screen if we are not inside.
2143 pi.pain.setDrawingEnabled(inside && original_drawing_state);
2144 RowPainter rp(pi, *text_, pit, row, bidi, x, y);
2147 row.setSelectionAndMargins(sel_beg_par, sel_end_par);
2149 row.setSelection(-1, -1);
2151 // The row knows nothing about the paragraph, so we have to check
2152 // whether this row is the first or last and update the margins.
2153 if (row.selection()) {
2154 if (row.sel_beg == 0)
2155 row.begin_margin_sel = sel_beg.pit() < pit;
2156 if (row.sel_end == sel_end_par.lastpos())
2157 row.end_margin_sel = sel_end.pit() > pit;
2160 // Row signature; has row changed since last paint?
2161 row.setCrc(pm.computeRowSignature(row, bparams));
2162 bool row_has_changed = row.changed();
2164 // Take this opportunity to spellcheck the row contents.
2165 if (row_has_changed && lyxrc.spellcheck_continuously) {
2166 text_->getPar(pit).spellCheck();
2169 // Don't paint the row if a full repaint has not been requested
2170 // and if it has not changed.
2171 if (!pi.full_repaint && !row_has_changed) {
2172 // Paint only the insets if the text itself is
2174 rp.paintOnlyInsets();
2179 // Clear background of this row if paragraph background was not
2180 // already cleared because of a full repaint.
2181 if (!pi.full_repaint && row_has_changed) {
2182 pi.pain.fillRectangle(x, y - row.ascent(),
2183 width(), row.height(), pi.background_color);
2186 // Instrumentation for testing row cache (see also
2188 if (lyxerr.debugging(Debug::PAINTING) && inside
2189 && (row.selection() || pi.full_repaint || row_has_changed)) {
2190 string const foreword = text_->isMainText() ?
2191 "main text redraw " : "inset text redraw: ";
2192 LYXERR(Debug::PAINTING, foreword << "pit=" << pit << " row=" << i
2193 << " row_selection=" << row.selection()
2194 << " full_repaint=" << pi.full_repaint
2195 << " row_has_changed=" << row_has_changed);
2198 // Backup full_repaint status and force full repaint
2199 // for inner insets as the Row has been cleared out.
2200 bool tmp = pi.full_repaint;
2201 pi.full_repaint = true;
2203 rp.paintSelection();
2206 rp.paintChangeBar();
2207 bool const is_rtl = text_->isRTL(text_->getPar(pit));
2208 if (i == 0 && !is_rtl)
2210 if (i == nrows - 1 && is_rtl)
2213 if (i == nrows - 1 && !is_rtl)
2215 if (i == 0 && is_rtl)
2219 // Restore full_repaint status.
2220 pi.full_repaint = tmp;
2222 // Re-enable screen drawing for future use of the painter.
2223 pi.pain.setDrawingEnabled(original_drawing_state);
2225 //LYXERR(Debug::PAINTING, ".");
2229 void TextMetrics::completionPosAndDim(Cursor const & cur, int & x, int & y,
2230 Dimension & dim) const
2232 Cursor const & bvcur = cur.bv().cursor();
2234 // get word in front of cursor
2235 docstring word = text_->previousWord(bvcur.top());
2236 DocIterator wordStart = bvcur;
2237 wordStart.pos() -= word.length();
2239 // get position on screen of the word start and end
2240 //FIXME: Is it necessary to explicitly set this to false?
2241 wordStart.boundary(false);
2242 Point lxy = cur.bv().getPos(wordStart);
2243 Point rxy = cur.bv().getPos(bvcur);
2245 // calculate dimensions of the word
2247 row.pos(wordStart.pos());
2248 row.endpos(bvcur.pos());
2249 setRowHeight(row, bvcur.pit(), false);
2250 dim = row.dimension();
2251 dim.wid = abs(rxy.x_ - lxy.x_);
2253 // calculate position of word
2255 x = min(rxy.x_, lxy.x_);
2257 //lyxerr << "wid=" << dim.width() << " x=" << x << " y=" << y << " lxy.x_=" << lxy.x_ << " rxy.x_=" << rxy.x_ << " word=" << word << std::endl;
2258 //lyxerr << " wordstart=" << wordStart << " bvcur=" << bvcur << " cur=" << cur << std::endl;
2261 //int TextMetrics::pos2x(pit_type pit, pos_type pos) const
2263 // ParagraphMetrics const & pm = par_metrics_[pit];
2264 // Row const & r = pm.rows()[row];
2270 int defaultRowHeight()
2272 return int(theFontMetrics(sane_font).maxHeight() * 1.2);