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"
33 #include "MetricsInfo.h"
34 #include "ParagraphParameters.h"
35 #include "RowPainter.h"
37 #include "TextClass.h"
40 #include "insets/InsetText.h"
42 #include "mathed/MathMacroTemplate.h"
44 #include "frontends/FontMetrics.h"
45 #include "frontends/Painter.h"
47 #include "support/debug.h"
48 #include "support/lassert.h"
57 using frontend::FontMetrics;
61 int numberOfSeparators(Row const & row)
64 Row::const_iterator cit = row.begin();
65 Row::const_iterator const end = row.end();
66 for ( ; cit != end ; ++cit)
67 if (cit->type == Row::SEPARATOR)
73 void setSeparatorWidth(Row & row, double w)
76 Row::iterator it = row.begin();
77 Row::iterator const end = row.end();
78 for ( ; it != end ; ++it)
79 if (it->type == Row::SEPARATOR)
84 int numberOfLabelHfills(Paragraph const & par, Row const & row)
86 pos_type last = row.endpos() - 1;
87 pos_type first = row.pos();
89 // hfill *DO* count at the beginning of paragraphs!
91 while (first < last && par.isHfill(first))
95 last = min(last, par.beginOfBody());
97 for (pos_type p = first; p < last; ++p) {
105 int numberOfHfills(Row const & row, pos_type const body_pos)
108 Row::const_iterator cit = row.begin();
109 Row::const_iterator const end = row.end();
110 for ( ; cit != end ; ++cit)
111 if (cit->pos >= body_pos
112 && cit->inset && cit->inset->isHfill())
120 /////////////////////////////////////////////////////////////////////
124 /////////////////////////////////////////////////////////////////////
127 TextMetrics::TextMetrics(BufferView * bv, Text * text)
128 : bv_(bv), text_(text)
131 max_width_ = bv_->workWidth();
132 dim_.wid = max_width_;
138 bool TextMetrics::contains(pit_type pit) const
140 return par_metrics_.find(pit) != par_metrics_.end();
144 ParagraphMetrics const & TextMetrics::parMetrics(pit_type pit) const
146 return const_cast<TextMetrics *>(this)->parMetrics(pit, true);
151 pair<pit_type, ParagraphMetrics const *> TextMetrics::first() const
153 ParMetricsCache::const_iterator it = par_metrics_.begin();
154 return make_pair(it->first, &it->second);
158 pair<pit_type, ParagraphMetrics const *> TextMetrics::last() const
160 LBUFERR(!par_metrics_.empty());
161 ParMetricsCache::const_reverse_iterator it = par_metrics_.rbegin();
162 return make_pair(it->first, &it->second);
166 ParagraphMetrics & TextMetrics::parMetrics(pit_type pit, bool redo)
168 ParMetricsCache::iterator pmc_it = par_metrics_.find(pit);
169 if (pmc_it == par_metrics_.end()) {
170 pmc_it = par_metrics_.insert(
171 make_pair(pit, ParagraphMetrics(text_->getPar(pit)))).first;
173 if (pmc_it->second.rows().empty() && redo)
175 return pmc_it->second;
179 bool TextMetrics::metrics(MetricsInfo & mi, Dimension & dim, int min_width)
181 LBUFERR(mi.base.textwidth > 0);
182 max_width_ = mi.base.textwidth;
183 // backup old dimension.
184 Dimension const old_dim = dim_;
187 dim_.wid = min_width;
188 pit_type const npar = text_->paragraphs().size();
190 // If there is more than one row, expand the text to
191 // the full allowable width.
192 dim_.wid = max_width_;
194 //lyxerr << "TextMetrics::metrics: width: " << mi.base.textwidth
195 // << " maxWidth: " << max_width_ << "\nfont: " << mi.base.font << endl;
197 bool changed = false;
199 for (pit_type pit = 0; pit != npar; ++pit) {
200 changed |= redoParagraph(pit);
201 ParagraphMetrics const & pm = par_metrics_[pit];
203 if (dim_.wid < pm.width())
204 dim_.wid = pm.width();
207 dim_.asc = par_metrics_[0].ascent();
208 dim_.des = h - dim_.asc;
209 //lyxerr << "dim_.wid " << dim_.wid << endl;
210 //lyxerr << "dim_.asc " << dim_.asc << endl;
211 //lyxerr << "dim_.des " << dim_.des << endl;
213 changed |= dim_ != old_dim;
219 int TextMetrics::rightMargin(ParagraphMetrics const & pm) const
221 return main_text_? pm.rightMargin(*bv_) : 0;
225 int TextMetrics::rightMargin(pit_type const pit) const
227 return main_text_? par_metrics_[pit].rightMargin(*bv_) : 0;
231 void TextMetrics::applyOuterFont(Font & font) const
233 FontInfo lf(font_.fontInfo());
234 lf.reduce(bv_->buffer().params().getFont().fontInfo());
235 font.fontInfo().realize(lf);
239 Font TextMetrics::displayFont(pit_type pit, pos_type pos) const
241 LASSERT(pos >= 0, { static Font f; return f; });
243 ParagraphList const & pars = text_->paragraphs();
244 Paragraph const & par = pars[pit];
245 Layout const & layout = par.layout();
246 Buffer const & buffer = bv_->buffer();
248 BufferParams const & params = buffer.params();
249 pos_type const body_pos = par.beginOfBody();
251 // We specialize the 95% common case:
252 if (!par.getDepth()) {
253 Font f = par.getFontSettings(params, pos);
254 if (!text_->isMainText())
256 bool lab = layout.labeltype == LABEL_MANUAL && pos < body_pos;
258 FontInfo const & lf = lab ? layout.labelfont : layout.font;
259 FontInfo rlf = lab ? layout.reslabelfont : layout.resfont;
261 // In case the default family has been customized
262 if (lf.family() == INHERIT_FAMILY)
263 rlf.setFamily(params.getFont().fontInfo().family());
264 f.fontInfo().realize(rlf);
268 // The uncommon case need not be optimized as much
269 FontInfo const & layoutfont = pos < body_pos ?
270 layout.labelfont : layout.font;
272 Font font = par.getFontSettings(params, pos);
273 font.fontInfo().realize(layoutfont);
275 if (!text_->isMainText())
276 applyOuterFont(font);
278 // Realize against environment font information
279 // NOTE: the cast to pit_type should be removed when pit_type
280 // changes to a unsigned integer.
281 if (pit < pit_type(pars.size()))
282 font.fontInfo().realize(text_->outerFont(pit).fontInfo());
284 // Realize with the fonts of lesser depth.
285 font.fontInfo().realize(params.getFont().fontInfo());
291 bool TextMetrics::isRTL(CursorSlice const & sl, bool boundary) const
297 if (boundary && sl.pos() > 0)
300 return displayFont(sl.pit(), sl.pos() + correction).isVisibleRightToLeft();
304 bool TextMetrics::isRTLBoundary(pit_type pit, pos_type pos) const
306 // no RTL boundary at paragraph start
310 Font const & left_font = displayFont(pit, pos - 1);
312 return isRTLBoundary(pit, pos, left_font);
316 // isRTLBoundary returns false on a real end-of-line boundary,
317 // because otherwise the two boundary types get mixed up.
318 // This is the whole purpose of this being in TextMetrics.
319 bool TextMetrics::isRTLBoundary(pit_type pit, pos_type pos,
320 Font const & font) const
322 if (// no RTL boundary at paragraph start
324 // if the metrics have not been calculated, then we are not
325 // on screen and can safely ignore issues about boundaries.
329 ParagraphMetrics & pm = par_metrics_[pit];
330 // no RTL boundary in empty paragraph
331 if (pm.rows().empty())
334 pos_type endpos = pm.getRow(pos - 1, false).endpos();
335 pos_type startpos = pm.getRow(pos, false).pos();
336 // no RTL boundary at line start:
337 // abc\n -> toggle to RTL -> abc\n (and not: abc\n|
339 if (pos == startpos && pos == endpos) // start of cur row, end of prev row
342 Paragraph const & par = text_->getPar(pit);
343 // no RTL boundary at line break:
344 // abc|\n -> move right -> abc\n (and not: abc\n|
346 if (startpos == pos && endpos == pos && endpos != par.size()
347 && (par.isNewline(pos - 1)
348 || par.isEnvSeparator(pos - 1)
349 || par.isLineSeparator(pos - 1)
350 || par.isSeparator(pos - 1)))
353 bool left = font.isVisibleRightToLeft();
355 if (pos == par.size())
356 right = par.isRTL(bv_->buffer().params());
358 right = displayFont(pit, pos).isVisibleRightToLeft();
360 return left != right;
364 bool TextMetrics::redoParagraph(pit_type const pit)
366 Paragraph & par = text_->getPar(pit);
367 // IMPORTANT NOTE: We pass 'false' explicitly in order to not call
368 // redoParagraph() recursively inside parMetrics.
369 Dimension old_dim = parMetrics(pit, false).dim();
370 ParagraphMetrics & pm = par_metrics_[pit];
373 Buffer & buffer = bv_->buffer();
374 main_text_ = (text_ == &buffer.text());
375 bool changed = false;
377 // Check whether there are InsetBibItems that need fixing
378 // FIXME: This check ought to be done somewhere else. It is the reason
379 // why text_ is not const. But then, where else to do it?
380 // Well, how can you end up with either (a) a biblio environment that
381 // has no InsetBibitem or (b) a biblio environment with more than one
382 // InsetBibitem? I think the answer is: when paragraphs are merged;
383 // when layout is set; when material is pasted.
384 if (par.brokenBiblio()) {
385 Cursor & cur = const_cast<Cursor &>(bv_->cursor());
386 // In some cases, we do not know how to record undo
387 if (&cur.inset() == &text_->inset())
388 cur.recordUndo(pit, pit);
390 int const moveCursor = par.fixBiblio(buffer);
392 // Is it necessary to update the cursor?
393 if (&cur.inset() == &text_->inset() && cur.pit() == pit) {
396 else if (moveCursor < 0 && cur.pos() >= -moveCursor)
401 // Optimisation: this is used in the next two loops
402 // so better to calculate that once here.
403 int const right_margin = rightMargin(pm);
405 // iterator pointing to paragraph to resolve macros
406 DocIterator parPos = text_->macrocontextPosition();
410 LYXERR(Debug::INFO, "MacroContext not initialised!"
411 << " Going through the buffer again and hope"
412 << " the context is better then.");
413 // FIXME audit updateBuffer calls
414 // This should not be here, but it is not clear yet where else it
416 bv_->buffer().updateBuffer();
417 parPos = text_->macrocontextPosition();
418 LBUFERR(!parPos.empty());
423 Font const bufferfont = buffer.params().getFont();
424 InsetList::const_iterator ii = par.insetList().begin();
425 InsetList::const_iterator iend = par.insetList().end();
426 for (; ii != iend; ++ii) {
427 // FIXME Doesn't this HAVE to be non-empty?
428 // position already initialized?
429 if (!parPos.empty()) {
430 parPos.pos() = ii->pos;
432 // A macro template would normally not be visible
433 // by itself. But the tex macro semantics allow
434 // recursion, so we artifically take the context
435 // after the macro template to simulate this.
436 if (ii->inset->lyxCode() == MATHMACRO_CODE)
440 // do the metric calculation
442 int const w = max_width_ - leftMargin(max_width_, pit, ii->pos)
444 Font const & font = ii->inset->inheritFont() ?
445 displayFont(pit, ii->pos) : bufferfont;
446 MacroContext mc(&buffer, parPos);
447 MetricsInfo mi(bv_, font.fontInfo(), w, mc);
448 ii->inset->metrics(mi, dim);
449 Dimension const & old_dim = pm.insetDimension(ii->inset);
450 if (old_dim != dim) {
451 pm.setInsetDimension(ii->inset, dim);
456 par.setBeginOfBody();
458 size_t row_index = 0;
459 // maximum pixel width of a row
461 if (row_index == pm.rows().size())
462 pm.rows().push_back(Row());
463 Row & row = pm.rows()[row_index];
465 breakRow(row, right_margin, pit);
466 setRowHeight(row, pit);
467 row.setChanged(false);
468 if (row_index || row.endpos() < par.size())
469 // If there is more than one row, expand the text to
470 // the full allowable width. This setting here is needed
471 // for the computeRowMetrics() below.
472 dim_.wid = max_width_;
473 int const max_row_width = max(dim_.wid, row.width());
474 computeRowMetrics(pit, row, max_row_width);
475 first = row.endpos();
478 pm.dim().wid = max(pm.dim().wid, row.width());
479 pm.dim().des += row.height();
480 } while (first < par.size());
482 if (row_index < pm.rows().size())
483 pm.rows().resize(row_index);
485 // Make sure that if a par ends in newline, there is one more row
487 if (first > 0 && par.isNewline(first - 1)) {
488 if (row_index == pm.rows().size())
489 pm.rows().push_back(Row());
490 Row & row = pm.rows()[row_index];
493 setRowHeight(row, pit);
494 row.setChanged(false);
495 int const max_row_width = max(dim_.wid, row.width());
496 computeRowMetrics(pit, row, max_row_width);
497 pm.dim().des += row.height();
500 pm.dim().asc += pm.rows()[0].ascent();
501 pm.dim().des -= pm.rows()[0].ascent();
503 changed |= old_dim.height() != pm.dim().height();
509 LyXAlignment TextMetrics::getAlign(Paragraph const & par, pos_type const pos) const
511 Layout const & layout = par.layout();
514 if (par.params().align() == LYX_ALIGN_LAYOUT)
515 align = layout.align;
517 align = par.params().align();
519 // handle alignment inside tabular cells
520 Inset const & owner = text_->inset();
521 switch (owner.contentAlignment()) {
522 case LYX_ALIGN_CENTER:
524 case LYX_ALIGN_RIGHT:
525 if (align == LYX_ALIGN_NONE || align == LYX_ALIGN_BLOCK)
526 align = owner.contentAlignment();
529 // unchanged (use align)
533 // Display-style insets should always be on a centered row
534 if (Inset const * inset = par.getInset(pos)) {
535 switch (inset->display()) {
536 case Inset::AlignLeft:
537 align = LYX_ALIGN_BLOCK;
539 case Inset::AlignCenter:
540 align = LYX_ALIGN_CENTER;
543 // unchanged (use align)
545 case Inset::AlignRight:
546 align = LYX_ALIGN_RIGHT;
551 // Has the user requested we not justify stuff?
552 if (!bv_->buffer().params().justification
553 && align == LYX_ALIGN_BLOCK)
554 align = LYX_ALIGN_LEFT;
560 void TextMetrics::computeRowMetrics(pit_type const pit,
561 Row & row, int width) const
566 Paragraph const & par = text_->getPar(pit);
568 int const w = width - row.right_margin - row.width();
569 // FIXME: put back this assertion when the crash on new doc is solved.
570 //LASSERT(w >= 0, /**/);
572 // is there a manual margin with a manual label
573 Layout const & layout = par.layout();
576 if (layout.margintype == MARGIN_MANUAL
577 && layout.labeltype == LABEL_MANUAL) {
578 /// We might have real hfills in the label part
579 nlh = numberOfLabelHfills(par, row);
581 // A manual label par (e.g. List) has an auto-hfill
582 // between the label text and the body of the
584 // But we don't want to do this auto hfill if the par
589 if (nlh && !par.getLabelWidthString().empty())
590 row.label_hfill = labelFill(pit, row) / double(nlh);
594 // are there any hfills in the row?
595 if (int const nh = numberOfHfills(row, par.beginOfBody())) {
597 hfill = double(w) / nh;
598 // we don't have to look at the alignment if it is ALIGN_LEFT and
599 // if the row is already larger then the permitted width as then
600 // we force the LEFT_ALIGN'edness!
601 } else if (int(row.width()) < max_width_) {
602 // is it block, flushleft or flushright?
603 // set x how you need it
604 switch (getAlign(par, row.pos())) {
605 case LYX_ALIGN_BLOCK: {
606 int const ns = numberOfSeparators(row);
607 /** If we have separators, and this row has
608 * not be broken abruptly by a display inset
609 * or newline, then stretch it */
610 if (ns && !row.right_boundary()
611 && row.endpos() != par.size()) {
612 setSeparatorWidth(row, double(w) / ns);
613 row.dimension().wid = width;
614 } else if (text_->isRTL(par)) {
615 row.dimension().wid = width;
616 row.left_margin += w;
620 case LYX_ALIGN_RIGHT:
621 row.left_margin += w;
622 row.dimension().wid += w;
624 case LYX_ALIGN_CENTER:
625 row.dimension().wid = width - w / 2;
626 row.left_margin += w / 2;
630 case LYX_ALIGN_LAYOUT:
631 case LYX_ALIGN_SPECIAL:
632 case LYX_ALIGN_DECIMAL:
637 // Finally, handle hfill insets
638 pos_type const endpos = row.endpos();
639 pos_type body_pos = par.beginOfBody();
641 && (body_pos > endpos || !par.isLineSeparator(body_pos - 1)))
643 ParagraphMetrics & pm = par_metrics_[pit];
644 Row::iterator cit = row.begin();
645 Row::iterator const cend = row.end();
646 for ( ; cit != cend; ++cit) {
647 if (row.label_hfill && cit->endpos == body_pos
648 && cit->type == Row::SPACE)
649 cit->dim.wid -= int(row.label_hfill * (nlh - 1));
650 if (!cit->inset || !cit->inset->isHfill())
652 if (pm.hfillExpansion(row, cit->pos))
653 cit->dim.wid = int(cit->pos >= body_pos ?
654 max(hfill, 5.0) : row.label_hfill);
657 // Cache the inset dimension.
658 bv_->coordCache().insets().add(cit->inset, cit->dim);
659 pm.setInsetDimension(cit->inset, cit->dim);
664 int TextMetrics::labelFill(pit_type const pit, Row const & row) const
666 Paragraph const & par = text_->getPar(pit);
667 LBUFERR(par.beginOfBody() > 0 || par.isEnvSeparator(0));
670 Row::const_iterator cit = row.begin();
671 Row::const_iterator const end = row.end();
672 // iterate over elements before main body (except the last one,
673 // which is extra space).
674 while (cit!= end && cit->endpos < par.beginOfBody()) {
679 docstring const & label = par.params().labelWidthString();
683 FontMetrics const & fm
684 = theFontMetrics(text_->labelFont(par));
686 return max(0, fm.width(label) - w);
691 // Not used, see TextMetrics::breakRow
692 // this needs special handling - only newlines count as a break point
693 static pos_type addressBreakPoint(pos_type i, Paragraph const & par)
695 pos_type const end = par.size();
698 if (par.isNewline(i))
706 int TextMetrics::labelEnd(pit_type const pit) const
708 // labelEnd is only needed if the layout fills a flushleft label.
709 if (text_->getPar(pit).layout().margintype != MARGIN_MANUAL)
711 // return the beginning of the body
712 return leftMargin(max_width_, pit);
718 * Calling Text::getFont is slow. While rebreaking we scan a
719 * paragraph from left to right calling getFont for every char. This
720 * simple class address this problem by hidding an optimization trick
721 * (not mine btw -AB): the font is reused in the whole font span. The
722 * class handles transparently the "hidden" (not part of the fontlist)
723 * label font (as getFont does).
729 FontIterator(TextMetrics const & tm,
730 Paragraph const & par, pit_type pit, pos_type pos)
731 : tm_(tm), par_(par), pit_(pit), pos_(pos),
732 font_(tm.displayFont(pit, pos)),
733 endspan_(par.fontSpan(pos).last),
734 bodypos_(par.beginOfBody())
738 Font const & operator*() const { return font_; }
741 FontIterator & operator++()
744 if (pos_ < par_.size() && (pos_ > endspan_ || pos_ == bodypos_)) {
745 font_ = tm_.displayFont(pit_, pos_);
746 endspan_ = par_.fontSpan(pos_).last;
752 Font * operator->() { return &font_; }
756 TextMetrics const & tm_;
758 Paragraph const & par_;
773 /** This is the function where the hard work is done. The code here is
774 * very sensitive to small changes :) Note that part of the
775 * intelligence is also in Row::shortenIfNeeded.
777 void TextMetrics::breakRow(Row & row, int const right_margin, pit_type const pit) const
779 Paragraph const & par = text_->getPar(pit);
780 pos_type const end = par.size();
781 pos_type const pos = row.pos();
782 pos_type const body_pos = par.beginOfBody();
783 bool const is_rtl = text_->isRTL(par);
786 row.left_margin = leftMargin(max_width_, pit, pos);
787 row.right_margin = right_margin;
789 swap(row.left_margin, row.right_margin);
790 // Remember that the row width takes into account the left_margin
791 // but not the right_margin.
792 row.dimension().wid = row.left_margin;
793 // the width available for the row.
794 int const width = max_width_ - row.right_margin;
796 if (pos >= end || row.width() > width) {
801 ParagraphMetrics const & pm = par_metrics_[pit];
802 ParagraphList const & pars = text_->paragraphs();
805 //FIXME: As long as leftMargin() is not correctly implemented for
806 // MARGIN_RIGHT_ADDRESS_BOX, we should also not do this here.
807 // Otherwise, long rows will be painted off the screen.
808 if (par.layout().margintype == MARGIN_RIGHT_ADDRESS_BOX)
809 return addressBreakPoint(pos, par);
812 // check for possible inline completion
813 DocIterator const & ic_it = bv_->inlineCompletionPos();
814 pos_type ic_pos = -1;
815 if (ic_it.inTexted() && ic_it.text() == text_ && ic_it.pit() == pit)
816 ic_pos = ic_it.pos();
818 // Now we iterate through until we reach the right margin
819 // or the end of the par, then build a representation of the row.
821 FontIterator fi = FontIterator(*this, par, pit, pos);
822 while (i < end && row.width() <= width) {
823 char_type c = par.getChar(i);
824 // The most special cases are handled first.
825 if (par.isInset(i)) {
826 Inset const * ins = par.getInset(i);
827 Dimension dim = pm.insetDimension(ins);
828 row.add(i, ins, dim, *fi, par.lookupChange(i));
829 } else if (c == ' ' && i + 1 == body_pos) {
830 // There is a space at i, but it should not be
831 // added as a separator, because it is just
832 // before body_pos. Instead, insert some spacing to
834 FontMetrics const & fm = theFontMetrics(text_->labelFont(par));
835 // this is needed to make sure that the row width is correct
837 int const add = max(fm.width(par.layout().labelsep),
838 labelEnd(pit) - row.width());
839 row.addSpace(i, add, *fi, par.lookupChange(i));
840 } else if (c == '\t')
841 row.addSpace(i, theFontMetrics(*fi).width(from_ascii(" ")),
842 *fi, par.lookupChange(i));
844 row.add(i, c, *fi, par.lookupChange(i));
846 // add inline completion width
847 // draw logically behind the previous character
848 if (ic_pos == i + 1 && !bv_->inlineCompletion().empty()) {
849 docstring const comp = bv_->inlineCompletion();
850 size_t const uniqueTo =bv_->inlineCompletionUniqueChars();
854 f.fontInfo().setColor(Color_inlinecompletion);
855 row.addVirtual(i + 1, comp.substr(0, uniqueTo), f, Change());
857 f.fontInfo().setColor(Color_nonunique_inlinecompletion);
858 row.addVirtual(i + 1, comp.substr(uniqueTo), f, Change());
861 // Handle some situations that abruptly terminate the row
863 // - Before a display inset
864 // - After a display inset
865 Inset const * inset = 0;
866 if (par.isNewline(i) || par.isEnvSeparator(i)
867 || (i + 1 < end && (inset = par.getInset(i + 1))
869 || (!row.empty() && row.back().inset
870 && row.back().inset->display())) {
871 row.right_boundary(true);
882 // End of paragraph marker
883 if (lyxrc.paragraph_markers
884 && i == end && size_type(pit + 1) < pars.size()) {
885 // add a virtual element for the end-of-paragraph
886 // marker; it is shown on screen, but does not exist
888 Font f(text_->layoutFont(pit));
889 f.fontInfo().setColor(Color_paragraphmarker);
890 BufferParams const & bparams
891 = text_->inset().buffer().params();
892 f.setLanguage(par.getParLanguage(bparams));
893 row.addVirtual(end, docstring(1, char_type(0x00B6)), f, Change());
896 // if the row is too large, try to cut at last separator.
897 row.shortenIfNeeded(body_pos, width);
899 // make sure that the RTL elements are in reverse ordering
900 row.reverseRTL(is_rtl);
901 //LYXERR0("breakrow: row is " << row);
905 void TextMetrics::setRowHeight(Row & row, pit_type const pit,
906 bool topBottomSpace) const
908 Paragraph const & par = text_->getPar(pit);
909 // get the maximum ascent and the maximum descent
910 double layoutasc = 0;
911 double layoutdesc = 0;
912 double const dh = defaultRowHeight();
914 // ok, let us initialize the maxasc and maxdesc value.
915 // Only the fontsize count. The other properties
916 // are taken from the layoutfont. Nicer on the screen :)
917 Layout const & layout = par.layout();
919 // as max get the first character of this row then it can
920 // increase but not decrease the height. Just some point to
921 // start with so we don't have to do the assignment below too
923 Buffer const & buffer = bv_->buffer();
924 Font font = displayFont(pit, row.pos());
925 FontSize const tmpsize = font.fontInfo().size();
926 font.fontInfo() = text_->layoutFont(pit);
927 FontSize const size = font.fontInfo().size();
928 font.fontInfo().setSize(tmpsize);
930 FontInfo labelfont = text_->labelFont(par);
932 FontMetrics const & labelfont_metrics = theFontMetrics(labelfont);
933 FontMetrics const & fontmetrics = theFontMetrics(font);
935 // these are minimum values
936 double const spacing_val = layout.spacing.getValue()
937 * text_->spacing(par);
938 //lyxerr << "spacing_val = " << spacing_val << endl;
939 int maxasc = int(fontmetrics.maxAscent() * spacing_val);
940 int maxdesc = int(fontmetrics.maxDescent() * spacing_val);
942 // insets may be taller
943 ParagraphMetrics const & pm = par_metrics_[pit];
944 Row::const_iterator cit = row.begin();
945 Row::const_iterator cend = row.end();
946 for ( ; cit != cend; ++cit) {
948 Dimension const & dim = pm.insetDimension(cit->inset);
949 maxasc = max(maxasc, dim.ascent());
950 maxdesc = max(maxdesc, dim.descent());
954 // Check if any custom fonts are larger (Asger)
955 // This is not completely correct, but we can live with the small,
956 // cosmetic error for now.
960 par.highestFontInRange(row.pos(), row.endpos(), size);
961 if (maxsize > font.fontInfo().size()) {
962 // use standard paragraph font with the maximal size
963 FontInfo maxfont = font.fontInfo();
964 maxfont.setSize(maxsize);
965 FontMetrics const & maxfontmetrics = theFontMetrics(maxfont);
966 maxasc = max(maxasc, maxfontmetrics.maxAscent());
967 maxdesc = max(maxdesc, maxfontmetrics.maxDescent());
970 // This is nicer with box insets:
974 ParagraphList const & pars = text_->paragraphs();
975 Inset const & inset = text_->inset();
978 if (row.pos() == 0 && topBottomSpace) {
979 BufferParams const & bufparams = buffer.params();
980 // some parskips VERY EASY IMPLEMENTATION
981 if (bufparams.paragraph_separation == BufferParams::ParagraphSkipSeparation
982 && !inset.getLayout().parbreakIsNewline()
983 && !par.layout().parbreak_is_newline
985 && ((layout.isParagraph() && par.getDepth() == 0)
986 || (pars[pit - 1].layout().isParagraph()
987 && pars[pit - 1].getDepth() == 0))) {
988 maxasc += bufparams.getDefSkip().inPixels(*bv_);
991 if (par.params().startOfAppendix())
992 maxasc += int(3 * dh);
994 // special code for the top label
995 if (layout.labelIsAbove()
996 && (!layout.isParagraphGroup() || text_->isFirstInSequence(pit))
997 && !par.labelString().empty()) {
999 labelfont_metrics.maxHeight()
1000 * layout.spacing.getValue()
1001 * text_->spacing(par)
1002 + (layout.topsep + layout.labelbottomsep) * dh);
1005 // Add the layout spaces, for example before and after
1006 // a section, or between the items of a itemize or enumerate
1009 pit_type prev = text_->depthHook(pit, par.getDepth());
1010 Paragraph const & prevpar = pars[prev];
1012 && prevpar.layout() == layout
1013 && prevpar.getDepth() == par.getDepth()
1014 && prevpar.getLabelWidthString()
1015 == par.getLabelWidthString()) {
1016 layoutasc = layout.itemsep * dh;
1017 } else if (pit != 0 || row.pos() != 0) {
1018 if (layout.topsep > 0)
1019 layoutasc = layout.topsep * dh;
1022 prev = text_->outerHook(pit);
1023 if (prev != pit_type(pars.size())) {
1024 maxasc += int(pars[prev].layout().parsep * dh);
1025 } else if (pit != 0) {
1026 Paragraph const & prevpar = pars[pit - 1];
1027 if (prevpar.getDepth() != 0 ||
1028 prevpar.layout() == layout) {
1029 maxasc += int(layout.parsep * dh);
1034 // is it a bottom line?
1035 if (row.endpos() >= par.size() && topBottomSpace) {
1036 // add the layout spaces, for example before and after
1037 // a section, or between the items of a itemize or enumerate
1039 pit_type nextpit = pit + 1;
1040 if (nextpit != pit_type(pars.size())) {
1041 pit_type cpit = pit;
1043 if (pars[cpit].getDepth() > pars[nextpit].getDepth()) {
1044 double usual = pars[cpit].layout().bottomsep * dh;
1046 cpit = text_->depthHook(cpit, pars[nextpit].getDepth());
1047 if (pars[cpit].layout() != pars[nextpit].layout()
1048 || pars[nextpit].getLabelWidthString() != pars[cpit].getLabelWidthString())
1049 unusual = pars[cpit].layout().bottomsep * dh;
1050 layoutdesc = max(unusual, usual);
1051 } else if (pars[cpit].getDepth() == pars[nextpit].getDepth()) {
1052 if (pars[cpit].layout() != pars[nextpit].layout()
1053 || pars[nextpit].getLabelWidthString() != pars[cpit].getLabelWidthString())
1054 layoutdesc = int(pars[cpit].layout().bottomsep * dh);
1059 // incalculate the layout spaces
1060 maxasc += int(layoutasc * 2 / (2 + pars[pit].getDepth()));
1061 maxdesc += int(layoutdesc * 2 / (2 + pars[pit].getDepth()));
1063 // FIXME: the correct way is to do the following is to move the
1064 // following code in another method specially tailored for the
1065 // main Text. The following test is thus bogus.
1066 // Top and bottom margin of the document (only at top-level)
1067 if (main_text_ && topBottomSpace) {
1068 if (pit == 0 && row.pos() == 0)
1070 if (pit + 1 == pit_type(pars.size()) &&
1071 row.endpos() == par.size() &&
1072 !(row.endpos() > 0 && par.isNewline(row.endpos() - 1)))
1076 row.dimension().asc = maxasc + labeladdon;
1077 row.dimension().des = maxdesc;
1081 // x is an absolute screen coord
1082 // returns the column near the specified x-coordinate of the row
1083 // x is set to the real beginning of this column
1084 pos_type TextMetrics::getPosNearX(Row const & row, int & x,
1085 bool & boundary) const
1087 //LYXERR0("getPosNearX(" << x << ") row=" << row);
1088 /// For the main Text, it is possible that this pit is not
1089 /// yet in the CoordCache when moving cursor up.
1090 /// x Paragraph coordinate is always 0 for main text anyway.
1091 int const xo = origin_.x_;
1094 pos_type pos = row.pos();
1097 x = row.left_margin;
1098 else if (x <= row.left_margin) {
1099 pos = row.front().left_pos();
1100 x = row.left_margin;
1101 } else if (x >= row.width()) {
1102 pos = row.back().right_pos();
1105 double w = row.left_margin;
1106 Row::const_iterator cit = row.begin();
1107 Row::const_iterator cend = row.end();
1108 for ( ; cit != cend; ++cit) {
1109 if (w <= x && w + cit->full_width() > x) {
1110 int x_offset = int(x - w);
1111 pos = cit->x2pos(x_offset);
1112 x = int(x_offset + w);
1115 w += cit->full_width();
1117 if (cit == row.end()) {
1118 pos = row.back().right_pos();
1121 /** This tests for the case where the cursor is placed
1122 * just before a font direction change. See comment on
1123 * the boundary_ member in DocIterator.h to understand
1124 * how boundary helps here.
1126 else if (pos == cit->endpos
1127 && cit + 1 != row.end()
1128 && cit->font.isVisibleRightToLeft() != (cit + 1)->font.isVisibleRightToLeft())
1132 /** This tests for the case where the cursor is set at the end
1133 * of a row which has been broken due something else than a
1134 * separator (a display inset or a forced breaking of the
1135 * row). We know that there is a separator when the end of the
1136 * row is larger than the end of its last element.
1138 if (!row.empty() && pos == row.back().endpos
1139 && row.back().endpos == row.endpos())
1143 //LYXERR0("getPosNearX ==> pos=" << pos << ", boundary=" << boundary);
1148 pos_type TextMetrics::x2pos(pit_type pit, int row, int x) const
1150 // We play safe and use parMetrics(pit) to make sure the
1151 // ParagraphMetrics will be redone and OK to use if needed.
1152 // Otherwise we would use an empty ParagraphMetrics in
1153 // upDownInText() while in selection mode.
1154 ParagraphMetrics const & pm = parMetrics(pit);
1156 LBUFERR(row < int(pm.rows().size()));
1158 Row const & r = pm.rows()[row];
1159 return getPosNearX(r, x, bound);
1163 void TextMetrics::newParMetricsDown()
1165 pair<pit_type, ParagraphMetrics> const & last = *par_metrics_.rbegin();
1166 pit_type const pit = last.first + 1;
1167 if (pit == int(text_->paragraphs().size()))
1170 // do it and update its position.
1172 par_metrics_[pit].setPosition(last.second.position()
1173 + last.second.descent() + par_metrics_[pit].ascent());
1177 void TextMetrics::newParMetricsUp()
1179 pair<pit_type, ParagraphMetrics> const & first = *par_metrics_.begin();
1180 if (first.first == 0)
1183 pit_type const pit = first.first - 1;
1184 // do it and update its position.
1186 par_metrics_[pit].setPosition(first.second.position()
1187 - first.second.ascent() - par_metrics_[pit].descent());
1190 // y is screen coordinate
1191 pit_type TextMetrics::getPitNearY(int y)
1193 LASSERT(!text_->paragraphs().empty(), return -1);
1194 LASSERT(!par_metrics_.empty(), return -1);
1195 LYXERR(Debug::DEBUG, "y: " << y << " cache size: " << par_metrics_.size());
1197 // look for highest numbered paragraph with y coordinate less than given y
1200 ParMetricsCache::const_iterator it = par_metrics_.begin();
1201 ParMetricsCache::const_iterator et = par_metrics_.end();
1202 ParMetricsCache::const_iterator last = et;
1205 ParagraphMetrics const & pm = it->second;
1207 if (y < it->second.position() - int(pm.ascent())) {
1208 // We are looking for a position that is before the first paragraph in
1209 // the cache (which is in priciple off-screen, that is before the
1212 // We are already at the first paragraph in the inset.
1214 // OK, this is the paragraph we are looking for.
1215 pit = it->first - 1;
1220 ParagraphMetrics const & pm_last = par_metrics_[last->first];
1222 if (y >= last->second.position() + int(pm_last.descent())) {
1223 // We are looking for a position that is after the last paragraph in
1224 // the cache (which is in priciple off-screen), that is before the
1226 pit = last->first + 1;
1227 if (pit == int(text_->paragraphs().size()))
1228 // We are already at the last paragraph in the inset.
1230 // OK, this is the paragraph we are looking for.
1231 newParMetricsDown();
1235 for (; it != et; ++it) {
1236 LYXERR(Debug::DEBUG, "examining: pit: " << it->first
1237 << " y: " << it->second.position());
1239 ParagraphMetrics const & pm = par_metrics_[it->first];
1241 if (it->first >= pit && int(it->second.position()) - int(pm.ascent()) <= y) {
1243 yy = it->second.position();
1247 LYXERR(Debug::DEBUG, "found best y: " << yy << " for pit: " << pit);
1253 Row const & TextMetrics::getPitAndRowNearY(int & y, pit_type & pit,
1254 bool assert_in_view, bool up)
1256 ParagraphMetrics const & pm = par_metrics_[pit];
1258 int yy = pm.position() - pm.ascent();
1259 LBUFERR(!pm.rows().empty());
1260 RowList::const_iterator rit = pm.rows().begin();
1261 RowList::const_iterator rlast = pm.rows().end();
1263 for (; rit != rlast; yy += rit->height(), ++rit)
1264 if (yy + rit->height() > y)
1267 if (assert_in_view) {
1268 if (!up && yy + rit->height() > y) {
1269 if (rit != pm.rows().begin()) {
1272 } else if (pit != 0) {
1275 ParagraphMetrics const & pm2 = par_metrics_[pit];
1276 rit = pm2.rows().end();
1280 } else if (up && yy != y) {
1282 y = yy + rit->height();
1284 } else if (pit < int(text_->paragraphs().size()) - 1) {
1286 newParMetricsDown();
1287 ParagraphMetrics const & pm2 = par_metrics_[pit];
1288 rit = pm2.rows().begin();
1297 // x,y are absolute screen coordinates
1298 // sets cursor recursively descending into nested editable insets
1299 Inset * TextMetrics::editXY(Cursor & cur, int x, int y,
1300 bool assert_in_view, bool up)
1302 if (lyxerr.debugging(Debug::WORKAREA)) {
1303 LYXERR0("TextMetrics::editXY(cur, " << x << ", " << y << ")");
1304 cur.bv().coordCache().dump();
1306 pit_type pit = getPitNearY(y);
1307 LASSERT(pit != -1, return 0);
1309 int yy = y; // is modified by getPitAndRowNearY
1310 Row const & row = getPitAndRowNearY(yy, pit, assert_in_view, up);
1314 // Do we cover an inset?
1315 InsetList::InsetTable * it = checkInsetHit(pit, x, yy);
1318 // No inset, set position in the text
1319 bool bound = false; // is modified by getPosNearX
1320 int xx = x; // is modified by getPosNearX
1321 cur.pos() = getPosNearX(row, xx, bound);
1322 cur.boundary(bound);
1323 cur.setCurrentFont();
1328 Inset * inset = it->inset;
1329 //lyxerr << "inset " << inset << " hit at x: " << x << " y: " << y << endl;
1331 // Set position in front of inset
1332 cur.pos() = it->pos;
1333 cur.boundary(false);
1336 // Try to descend recursively inside the inset.
1337 inset = inset->editXY(cur, x, yy);
1339 if (cur.top().text() == text_)
1340 cur.setCurrentFont();
1345 void TextMetrics::setCursorFromCoordinates(Cursor & cur, int const x, int const y)
1347 LASSERT(text_ == cur.text(), return);
1348 pit_type const pit = getPitNearY(y);
1349 LASSERT(pit != -1, return);
1351 ParagraphMetrics const & pm = par_metrics_[pit];
1353 int yy = pm.position() - pm.ascent();
1354 LYXERR(Debug::DEBUG, "x: " << x << " y: " << y <<
1355 " pit: " << pit << " yy: " << yy);
1358 LBUFERR(pm.rows().size());
1359 for (; r < int(pm.rows().size()) - 1; ++r) {
1360 Row const & row = pm.rows()[r];
1361 if (int(yy + row.height()) > y)
1366 Row const & row = pm.rows()[r];
1368 LYXERR(Debug::DEBUG, "row " << r << " from pos: " << row.pos());
1372 pos_type const pos = getPosNearX(row, xx, bound);
1374 LYXERR(Debug::DEBUG, "setting cursor pit: " << pit << " pos: " << pos);
1376 text_->setCursor(cur, pit, pos, true, bound);
1377 // remember new position.
1382 //takes screen x,y coordinates
1383 InsetList::InsetTable * TextMetrics::checkInsetHit(pit_type pit, int x, int y)
1385 Paragraph const & par = text_->paragraphs()[pit];
1386 ParagraphMetrics const & pm = par_metrics_[pit];
1388 LYXERR(Debug::DEBUG, "x: " << x << " y: " << y << " pit: " << pit);
1390 InsetList::const_iterator iit = par.insetList().begin();
1391 InsetList::const_iterator iend = par.insetList().end();
1392 for (; iit != iend; ++iit) {
1393 Inset * inset = iit->inset;
1395 LYXERR(Debug::DEBUG, "examining inset " << inset);
1397 if (!bv_->coordCache().getInsets().has(inset)) {
1398 LYXERR(Debug::DEBUG, "inset has no cached position");
1402 Dimension const & dim = pm.insetDimension(inset);
1403 Point p = bv_->coordCache().getInsets().xy(inset);
1405 LYXERR(Debug::DEBUG, "xo: " << p.x_ << "..." << p.x_ + dim.wid
1406 << " yo: " << p.y_ - dim.asc << "..." << p.y_ + dim.des);
1408 if (x >= p.x_ && x <= p.x_ + dim.wid
1409 && y >= p.y_ - dim.asc && y <= p.y_ + dim.des) {
1410 LYXERR(Debug::DEBUG, "Hit inset: " << inset);
1411 return const_cast<InsetList::InsetTable *>(&(*iit));
1415 LYXERR(Debug::DEBUG, "No inset hit. ");
1420 //takes screen x,y coordinates
1421 Inset * TextMetrics::checkInsetHit(int x, int y)
1423 pit_type const pit = getPitNearY(y);
1424 LASSERT(pit != -1, return 0);
1425 InsetList::InsetTable * it = checkInsetHit(pit, x, y);
1434 int TextMetrics::cursorX(CursorSlice const & sl,
1435 bool boundary) const
1437 LASSERT(sl.text() == text_, return 0);
1439 ParagraphMetrics const & pm = par_metrics_[sl.pit()];
1440 if (pm.rows().empty())
1442 Row const & row = pm.getRow(sl.pos(), boundary);
1443 pos_type const pos = sl.pos();
1446 * When boundary is true, position i is in the row element (pos, endpos)
1449 * whereas, when boundary is false, the test is
1451 * The correction below allows to handle both cases.
1453 int const boundary_corr = (boundary && pos) ? -1 : 0;
1455 /** Early return in trivial cases
1456 * 1) the row is empty
1457 * 2) the position is the left-most position of the row; there
1458 * is a quirck herehowever: if the first element is virtual
1459 * (end-of-par marker for example), then we have to look
1463 || (pos == row.begin()->left_pos()
1464 && pos != row.begin()->right_pos()))
1465 return row.left_margin;
1467 Row::const_iterator cit = row.begin();
1468 double x = row.left_margin;
1469 for ( ; cit != row.end() ; ++cit) {
1470 /** Look whether the cursor is inside the element's
1471 * span. Note that it is necessary to take the
1472 * boundary in account, and to accept virtual
1473 * elements, which have pos == endpos.
1475 if (pos + boundary_corr >= cit->pos
1476 && (pos + boundary_corr < cit->endpos
1477 || cit->pos == cit->endpos)) {
1478 x += cit->pos2x(pos);
1481 x += cit->full_width();
1488 int TextMetrics::cursorY(CursorSlice const & sl, bool boundary) const
1490 //lyxerr << "TextMetrics::cursorY: boundary: " << boundary << endl;
1491 ParagraphMetrics const & pm = par_metrics_[sl.pit()];
1492 if (pm.rows().empty())
1496 h -= par_metrics_[0].rows()[0].ascent();
1497 for (pit_type pit = 0; pit < sl.pit(); ++pit) {
1498 h += par_metrics_[pit].height();
1501 if (pos && boundary)
1503 size_t const rend = pm.pos2row(pos);
1504 for (size_t rit = 0; rit != rend; ++rit)
1505 h += pm.rows()[rit].height();
1506 h += pm.rows()[rend].ascent();
1511 // the cursor set functions have a special mechanism. When they
1512 // realize you left an empty paragraph, they will delete it.
1514 bool TextMetrics::cursorHome(Cursor & cur)
1516 LASSERT(text_ == cur.text(), return false);
1517 ParagraphMetrics const & pm = par_metrics_[cur.pit()];
1518 Row const & row = pm.getRow(cur.pos(),cur.boundary());
1519 return text_->setCursor(cur, cur.pit(), row.pos());
1523 bool TextMetrics::cursorEnd(Cursor & cur)
1525 LASSERT(text_ == cur.text(), return false);
1526 // if not on the last row of the par, put the cursor before
1527 // the final space exept if I have a spanning inset or one string
1528 // is so long that we force a break.
1529 pos_type end = cur.textRow().endpos();
1531 // empty text, end-1 is no valid position
1533 bool boundary = false;
1534 if (end != cur.lastpos()) {
1535 if (!cur.paragraph().isLineSeparator(end-1)
1536 && !cur.paragraph().isNewline(end-1)
1537 && !cur.paragraph().isEnvSeparator(end-1))
1542 return text_->setCursor(cur, cur.pit(), end, true, boundary);
1546 void TextMetrics::deleteLineForward(Cursor & cur)
1548 LASSERT(text_ == cur.text(), return);
1549 if (cur.lastpos() == 0) {
1550 // Paragraph is empty, so we just go forward
1551 text_->cursorForward(cur);
1554 cur.setSelection(true); // to avoid deletion
1557 // What is this test for ??? (JMarc)
1558 if (!cur.selection())
1559 text_->deleteWordForward(cur);
1561 cap::cutSelection(cur, true, false);
1562 cur.checkBufferStructure();
1567 bool TextMetrics::isLastRow(pit_type pit, Row const & row) const
1569 ParagraphList const & pars = text_->paragraphs();
1570 return row.endpos() >= pars[pit].size()
1571 && pit + 1 == pit_type(pars.size());
1575 bool TextMetrics::isFirstRow(pit_type pit, Row const & row) const
1577 return row.pos() == 0 && pit == 0;
1581 int TextMetrics::leftMargin(int max_width, pit_type pit) const
1583 return leftMargin(max_width, pit, text_->paragraphs()[pit].size());
1587 int TextMetrics::leftMargin(int max_width,
1588 pit_type const pit, pos_type const pos) const
1590 ParagraphList const & pars = text_->paragraphs();
1592 LASSERT(pit >= 0, return 0);
1593 LASSERT(pit < int(pars.size()), return 0);
1594 Paragraph const & par = pars[pit];
1595 LASSERT(pos >= 0, return 0);
1596 LASSERT(pos <= par.size(), return 0);
1597 Buffer const & buffer = bv_->buffer();
1598 //lyxerr << "TextMetrics::leftMargin: pit: " << pit << " pos: " << pos << endl;
1599 DocumentClass const & tclass = buffer.params().documentClass();
1600 Layout const & layout = par.layout();
1602 docstring parindent = layout.parindent;
1606 if (text_->isMainText())
1607 l_margin += bv_->leftMargin();
1609 l_margin += theFontMetrics(buffer.params().getFont()).signedWidth(
1610 tclass.leftmargin());
1612 int depth = par.getDepth();
1614 // find the next level paragraph
1615 pit_type newpar = text_->outerHook(pit);
1616 if (newpar != pit_type(pars.size())) {
1617 if (pars[newpar].layout().isEnvironment()) {
1618 int nestmargin = depth * nestMargin();
1619 if (text_->isMainText())
1620 nestmargin += changebarMargin();
1621 l_margin = max(leftMargin(max_width, newpar), nestmargin);
1622 // Remove the parindent that has been added
1623 // if the paragraph was empty.
1624 if (pars[newpar].empty() &&
1625 buffer.params().paragraph_separation ==
1626 BufferParams::ParagraphIndentSeparation) {
1627 docstring pi = pars[newpar].layout().parindent;
1628 l_margin -= theFontMetrics(
1629 buffer.params().getFont()).signedWidth(pi);
1632 if (tclass.isDefaultLayout(par.layout())
1633 || tclass.isPlainLayout(par.layout())) {
1634 if (pars[newpar].params().noindent())
1637 parindent = pars[newpar].layout().parindent;
1642 // This happens after sections or environments in standard classes.
1643 // We have to check the previous layout at same depth.
1644 if (buffer.params().paragraph_separation ==
1645 BufferParams::ParagraphSkipSeparation)
1647 else if (pit > 0 && pars[pit - 1].getDepth() >= par.getDepth()) {
1648 pit_type prev = text_->depthHook(pit, par.getDepth());
1649 if (par.layout() == pars[prev].layout()) {
1651 && pars[pit - 1].layout().nextnoindent)
1653 } else if (pars[prev].layout().nextnoindent)
1657 FontInfo const labelfont = text_->labelFont(par);
1658 FontMetrics const & labelfont_metrics = theFontMetrics(labelfont);
1660 switch (layout.margintype) {
1661 case MARGIN_DYNAMIC:
1662 if (!layout.leftmargin.empty()) {
1663 l_margin += theFontMetrics(buffer.params().getFont()).signedWidth(
1666 if (!par.labelString().empty()) {
1667 l_margin += labelfont_metrics.signedWidth(layout.labelindent);
1668 l_margin += labelfont_metrics.width(par.labelString());
1669 l_margin += labelfont_metrics.width(layout.labelsep);
1673 case MARGIN_MANUAL: {
1674 l_margin += labelfont_metrics.signedWidth(layout.labelindent);
1675 // The width of an empty par, even with manual label, should be 0
1676 if (!par.empty() && pos >= par.beginOfBody()) {
1677 if (!par.getLabelWidthString().empty()) {
1678 docstring labstr = par.getLabelWidthString();
1679 l_margin += labelfont_metrics.width(labstr);
1680 l_margin += labelfont_metrics.width(layout.labelsep);
1686 case MARGIN_STATIC: {
1687 l_margin += theFontMetrics(buffer.params().getFont()).
1688 signedWidth(layout.leftmargin) * 4 / (par.getDepth() + 4);
1692 case MARGIN_FIRST_DYNAMIC:
1693 if (layout.labeltype == LABEL_MANUAL) {
1694 // if we are at position 0, we are never in the body
1695 if (pos > 0 && pos >= par.beginOfBody())
1696 l_margin += labelfont_metrics.signedWidth(layout.leftmargin);
1698 l_margin += labelfont_metrics.signedWidth(layout.labelindent);
1700 // Special case to fix problems with
1702 || (layout.labeltype == LABEL_STATIC
1703 && layout.latextype == LATEX_ENVIRONMENT
1704 && !text_->isFirstInSequence(pit))) {
1705 l_margin += labelfont_metrics.signedWidth(layout.leftmargin);
1706 } else if (!layout.labelIsAbove()) {
1707 l_margin += labelfont_metrics.signedWidth(layout.labelindent);
1708 l_margin += labelfont_metrics.width(layout.labelsep);
1709 l_margin += labelfont_metrics.width(par.labelString());
1713 case MARGIN_RIGHT_ADDRESS_BOX: {
1715 // The left margin depends on the widest row in this paragraph.
1716 // This code is wrong because it depends on the rows, but at the
1717 // same time this function is used in redoParagraph to construct
1719 ParagraphMetrics const & pm = par_metrics_[pit];
1720 RowList::const_iterator rit = pm.rows().begin();
1721 RowList::const_iterator end = pm.rows().end();
1722 int minfill = max_width;
1723 for ( ; rit != end; ++rit)
1724 if (rit->fill() < minfill)
1725 minfill = rit->fill();
1726 l_margin += theFontMetrics(buffer.params().getFont()).signedWidth(layout.leftmargin);
1727 l_margin += minfill;
1729 // also wrong, but much shorter.
1730 l_margin += max_width / 2;
1735 if (!par.params().leftIndent().zero())
1736 l_margin += par.params().leftIndent().inPixels(max_width, labelfont_metrics.em());
1740 if (par.params().align() == LYX_ALIGN_LAYOUT)
1741 align = layout.align;
1743 align = par.params().align();
1745 // set the correct parindent
1747 && (layout.labeltype == LABEL_NO_LABEL
1748 || layout.labeltype == LABEL_ABOVE
1749 || layout.labeltype == LABEL_CENTERED
1750 || (layout.labeltype == LABEL_STATIC
1751 && layout.latextype == LATEX_ENVIRONMENT
1752 && !text_->isFirstInSequence(pit)))
1753 && (align == LYX_ALIGN_BLOCK || align == LYX_ALIGN_LEFT)
1754 && !par.params().noindent()
1755 // in some insets, paragraphs are never indented
1756 && !text_->inset().neverIndent()
1757 // display style insets are always centered, omit indentation
1760 && par.getInset(pos)->display())
1761 && (!(tclass.isDefaultLayout(par.layout())
1762 || tclass.isPlainLayout(par.layout()))
1763 || buffer.params().paragraph_separation
1764 == BufferParams::ParagraphIndentSeparation)) {
1765 // use the parindent of the layout when the
1766 // default indentation is used otherwise use
1767 // the indentation set in the document
1769 if (buffer.params().getIndentation().asLyXCommand() == "default")
1770 l_margin += theFontMetrics(
1771 buffer.params().getFont()).signedWidth(parindent);
1773 l_margin += buffer.params().getIndentation().inPixels(*bv_);
1780 void TextMetrics::draw(PainterInfo & pi, int x, int y) const
1782 if (par_metrics_.empty())
1788 ParMetricsCache::iterator it = par_metrics_.begin();
1789 ParMetricsCache::iterator const pm_end = par_metrics_.end();
1790 y -= it->second.ascent();
1791 for (; it != pm_end; ++it) {
1792 ParagraphMetrics const & pmi = it->second;
1794 pit_type const pit = it->first;
1795 // Save the paragraph position in the cache.
1796 it->second.setPosition(y);
1797 drawParagraph(pi, pit, x, y);
1803 void TextMetrics::drawParagraph(PainterInfo & pi, pit_type const pit, int const x, int y) const
1805 BufferParams const & bparams = bv_->buffer().params();
1806 ParagraphMetrics const & pm = par_metrics_[pit];
1807 if (pm.rows().empty())
1810 bool const original_drawing_state = pi.pain.isDrawingEnabled();
1811 int const ww = bv_->workHeight();
1812 size_t const nrows = pm.rows().size();
1814 Cursor const & cur = bv_->cursor();
1815 DocIterator sel_beg = cur.selectionBegin();
1816 DocIterator sel_end = cur.selectionEnd();
1817 bool selection = cur.selection()
1818 // This is our text.
1819 && cur.text() == text_
1820 // if the anchor is outside, this is not our selection
1821 && cur.normalAnchor().text() == text_
1822 && pit >= sel_beg.pit() && pit <= sel_end.pit();
1824 // We store the begin and end pos of the selection relative to this par
1825 DocIterator sel_beg_par = cur.selectionBegin();
1826 DocIterator sel_end_par = cur.selectionEnd();
1828 // We care only about visible selection.
1830 if (pit != sel_beg.pit()) {
1831 sel_beg_par.pit() = pit;
1832 sel_beg_par.pos() = 0;
1834 if (pit != sel_end.pit()) {
1835 sel_end_par.pit() = pit;
1836 sel_end_par.pos() = sel_end_par.lastpos();
1840 for (size_t i = 0; i != nrows; ++i) {
1842 Row const & row = pm.rows()[i];
1847 CursorSlice rowSlice(const_cast<InsetText &>(text_->inset()));
1848 rowSlice.pit() = pit;
1849 rowSlice.pos() = row.pos();
1851 bool const inside = (y + row.descent() >= 0
1852 && y - row.ascent() < ww);
1854 // Adapt to cursor row scroll offset if applicable.
1855 if (bv_->currentRowSlice() == rowSlice)
1856 row_x -= bv_->horizScrollOffset();
1858 // It is not needed to draw on screen if we are not inside.
1859 pi.pain.setDrawingEnabled(inside && original_drawing_state);
1861 RowPainter rp(pi, *text_, pit, row, row_x, y);
1864 row.setSelectionAndMargins(sel_beg_par, sel_end_par);
1866 row.setSelection(-1, -1);
1868 // The row knows nothing about the paragraph, so we have to check
1869 // whether this row is the first or last and update the margins.
1870 if (row.selection()) {
1871 if (row.sel_beg == 0)
1872 row.begin_margin_sel = sel_beg.pit() < pit;
1873 if (row.sel_end == sel_end_par.lastpos())
1874 row.end_margin_sel = sel_end.pit() > pit;
1877 // Row signature; has row changed since last paint?
1878 if (pi.pain.isDrawingEnabled())
1879 row.setCrc(pm.computeRowSignature(row, bparams));
1880 bool row_has_changed = row.changed()
1881 || rowSlice == bv_->lastRowSlice();
1883 // Take this opportunity to spellcheck the row contents.
1884 if (row_has_changed && pi.do_spellcheck && lyxrc.spellcheck_continuously) {
1885 text_->getPar(pit).spellCheck();
1888 // Don't paint the row if a full repaint has not been requested
1889 // and if it has not changed.
1890 if (!pi.full_repaint && !row_has_changed) {
1891 // Paint only the insets if the text itself is
1893 rp.paintOnlyInsets();
1898 // Clear background of this row if paragraph background was not
1899 // already cleared because of a full repaint.
1900 if (!pi.full_repaint && row_has_changed) {
1901 LYXERR(Debug::PAINTING, "Clear rect@("
1902 << max(row_x, 0) << ", " << y - row.ascent() << ")="
1903 << width() << " x " << row.height());
1904 pi.pain.fillRectangle(max(row_x, 0), y - row.ascent(),
1905 width(), row.height(), pi.background_color);
1908 // Instrumentation for testing row cache (see also
1910 if (lyxerr.debugging(Debug::PAINTING) && inside
1911 && (row.selection() || pi.full_repaint || row_has_changed)) {
1912 string const foreword = text_->isMainText() ?
1913 "main text redraw " : "inset text redraw: ";
1914 LYXERR(Debug::PAINTING, foreword << "pit=" << pit << " row=" << i
1915 << " row_selection=" << row.selection()
1916 << " full_repaint=" << pi.full_repaint
1917 << " row_has_changed=" << row_has_changed
1918 << " drawingEnabled=" << pi.pain.isDrawingEnabled());
1921 // Backup full_repaint status and force full repaint
1922 // for inner insets as the Row has been cleared out.
1923 bool tmp = pi.full_repaint;
1924 pi.full_repaint = true;
1926 rp.paintSelection();
1929 rp.paintChangeBar();
1930 bool const is_rtl = text_->isRTL(text_->getPar(pit));
1931 if (i == 0 && !is_rtl)
1933 if (i == nrows - 1 && is_rtl)
1936 if (i == nrows - 1 && !is_rtl)
1938 if (i == 0 && is_rtl)
1940 rp.paintTooLargeMarks(row_x < 0,
1941 row_x + row.width() > 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(original_drawing_state);
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 // get position on screen of the word start and end
1965 //FIXME: Is it necessary to explicitly set this to false?
1966 wordStart.boundary(false);
1967 Point lxy = cur.bv().getPos(wordStart);
1968 Point rxy = cur.bv().getPos(bvcur);
1970 // calculate dimensions of the word
1972 row.pos(wordStart.pos());
1973 row.endpos(bvcur.pos());
1974 setRowHeight(row, bvcur.pit(), false);
1975 dim = row.dimension();
1976 dim.wid = abs(rxy.x_ - lxy.x_);
1978 // calculate position of word
1980 x = min(rxy.x_, lxy.x_);
1982 //lyxerr << "wid=" << dim.width() << " x=" << x << " y=" << y << " lxy.x_=" << lxy.x_ << " rxy.x_=" << rxy.x_ << " word=" << word << std::endl;
1983 //lyxerr << " wordstart=" << wordStart << " bvcur=" << bvcur << " cur=" << cur << std::endl;
1986 int defaultRowHeight()
1988 return int(theFontMetrics(sane_font).maxHeight() * 1.2);