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"
24 #include "buffer_funcs.h"
25 #include "BufferParams.h"
26 #include "BufferView.h"
27 #include "CoordCache.h"
29 #include "CutAndPaste.h"
31 #include "InsetList.h"
35 #include "MetricsInfo.h"
36 #include "ParagraphParameters.h"
37 #include "ParIterator.h"
38 #include "rowpainter.h"
40 #include "TextClass.h"
42 #include "WordLangTuple.h"
44 #include "insets/InsetText.h"
46 #include "mathed/MacroTable.h"
47 #include "mathed/MathMacroTemplate.h"
49 #include "frontends/FontMetrics.h"
50 #include "frontends/Painter.h"
52 #include "support/debug.h"
53 #include "support/docstring_list.h"
54 #include "support/lassert.h"
63 using frontend::FontMetrics;
65 static int numberOfSeparators(Paragraph const & par, Row const & row)
67 pos_type const first = max(row.pos(), par.beginOfBody());
68 pos_type const last = row.endpos() - 1;
70 for (pos_type p = first; p < last; ++p) {
71 if (par.isSeparator(p))
78 static int numberOfLabelHfills(Paragraph const & par, Row const & row)
80 pos_type last = row.endpos() - 1;
81 pos_type first = row.pos();
83 // hfill *DO* count at the beginning of paragraphs!
85 while (first < last && par.isHfill(first))
89 last = min(last, par.beginOfBody());
91 for (pos_type p = first; p < last; ++p) {
99 static int numberOfHfills(Paragraph const & par, Row const & row)
101 pos_type const last = row.endpos();
102 pos_type first = row.pos();
104 // hfill *DO* count at the beginning of paragraphs!
106 while (first < last && par.isHfill(first))
110 first = max(first, par.beginOfBody());
113 for (pos_type p = first; p < last; ++p) {
121 /////////////////////////////////////////////////////////////////////
125 /////////////////////////////////////////////////////////////////////
128 TextMetrics::TextMetrics(BufferView * bv, Text * text)
129 : bv_(bv), text_(text)
132 max_width_ = bv_->workWidth();
133 dim_.wid = max_width_;
139 bool TextMetrics::contains(pit_type pit) const
141 return par_metrics_.find(pit) != par_metrics_.end();
145 ParagraphMetrics const & TextMetrics::parMetrics(pit_type pit) const
147 return const_cast<TextMetrics *>(this)->parMetrics(pit, true);
152 pair<pit_type, ParagraphMetrics const *> TextMetrics::first() const
154 ParMetricsCache::const_iterator it = par_metrics_.begin();
155 return make_pair(it->first, &it->second);
159 pair<pit_type, ParagraphMetrics const *> TextMetrics::last() const
161 LASSERT(!par_metrics_.empty(), /**/);
162 ParMetricsCache::const_reverse_iterator it = par_metrics_.rbegin();
163 return make_pair(it->first, &it->second);
167 ParagraphMetrics & TextMetrics::parMetrics(pit_type pit, bool redo)
169 ParMetricsCache::iterator pmc_it = par_metrics_.find(pit);
170 if (pmc_it == par_metrics_.end()) {
171 pmc_it = par_metrics_.insert(
172 make_pair(pit, ParagraphMetrics(text_->getPar(pit)))).first;
174 if (pmc_it->second.rows().empty() && redo)
176 return pmc_it->second;
180 bool TextMetrics::metrics(MetricsInfo & mi, Dimension & dim, int min_width)
182 LASSERT(mi.base.textwidth > 0, /**/);
183 max_width_ = mi.base.textwidth;
184 // backup old dimension.
185 Dimension const old_dim = dim_;
188 dim_.wid = min_width;
189 pit_type const npar = text_->paragraphs().size();
191 // If there is more than one row, expand the text to
192 // the full allowable width.
193 dim_.wid = max_width_;
195 //lyxerr << "TextMetrics::metrics: width: " << mi.base.textwidth
196 // << " maxWidth: " << max_width_ << "\nfont: " << mi.base.font << endl;
198 bool changed = false;
200 for (pit_type pit = 0; pit != npar; ++pit) {
201 changed |= redoParagraph(pit);
202 ParagraphMetrics const & pm = par_metrics_[pit];
204 if (dim_.wid < pm.width())
205 dim_.wid = pm.width();
208 dim_.asc = par_metrics_[0].ascent();
209 dim_.des = h - dim_.asc;
210 //lyxerr << "dim_.wid " << dim_.wid << endl;
211 //lyxerr << "dim_.asc " << dim_.asc << endl;
212 //lyxerr << "dim_.des " << dim_.des << endl;
214 changed |= dim_ != old_dim;
220 int TextMetrics::rightMargin(ParagraphMetrics const & pm) const
222 return main_text_? pm.rightMargin(*bv_) : 0;
226 int TextMetrics::rightMargin(pit_type const pit) const
228 return main_text_? par_metrics_[pit].rightMargin(*bv_) : 0;
232 void TextMetrics::applyOuterFont(Font & font) const
234 FontInfo lf(font_.fontInfo());
235 lf.reduce(bv_->buffer().params().getFont().fontInfo());
236 font.fontInfo().realize(lf);
240 Font TextMetrics::displayFont(pit_type pit, pos_type pos) const
242 LASSERT(pos >= 0, /**/);
244 ParagraphList const & pars = text_->paragraphs();
245 Paragraph const & par = pars[pit];
246 Layout const & layout = par.layout();
247 Buffer const & buffer = bv_->buffer();
249 BufferParams const & params = buffer.params();
250 pos_type const body_pos = par.beginOfBody();
252 // We specialize the 95% common case:
253 if (!par.getDepth()) {
254 Font f = par.getFontSettings(params, pos);
255 if (!text_->isMainText())
257 bool lab = layout.labeltype == LABEL_MANUAL && pos < body_pos;
259 FontInfo const & lf = lab ? layout.labelfont : layout.font;
260 FontInfo rlf = lab ? layout.reslabelfont : layout.resfont;
262 // In case the default family has been customized
263 if (lf.family() == INHERIT_FAMILY)
264 rlf.setFamily(params.getFont().fontInfo().family());
265 f.fontInfo().realize(rlf);
269 // The uncommon case need not be optimized as much
270 FontInfo const & layoutfont = pos < body_pos ?
271 layout.labelfont : layout.font;
273 Font font = par.getFontSettings(params, pos);
274 font.fontInfo().realize(layoutfont);
276 if (!text_->isMainText())
277 applyOuterFont(font);
279 // Realize against environment font information
280 // NOTE: the cast to pit_type should be removed when pit_type
281 // changes to a unsigned integer.
282 if (pit < pit_type(pars.size()))
283 font.fontInfo().realize(text_->outerFont(pit).fontInfo());
285 // Realize with the fonts of lesser depth.
286 font.fontInfo().realize(params.getFont().fontInfo());
292 bool TextMetrics::isRTL(CursorSlice const & sl, bool boundary) const
294 if (!lyxrc.rtl_support || !sl.text())
298 if (boundary && sl.pos() > 0)
301 return displayFont(sl.pit(), sl.pos() + correction).isVisibleRightToLeft();
305 bool TextMetrics::isRTLBoundary(pit_type pit, pos_type pos) const
307 // no RTL boundary at paragraph start
308 if (!lyxrc.rtl_support || pos == 0)
311 Font const & left_font = displayFont(pit, pos - 1);
313 return isRTLBoundary(pit, pos, left_font);
317 // isRTLBoundary returns false on a real end-of-line boundary,
318 // because otherwise the two boundary types get mixed up.
319 // This is the whole purpose of this being in TextMetrics.
320 bool TextMetrics::isRTLBoundary(pit_type pit, pos_type pos,
321 Font const & font) const
323 if (!lyxrc.rtl_support
324 // no RTL boundary at paragraph start
326 // if the metrics have not been calculated, then we are not
327 // on screen and can safely ignore issues about boundaries.
331 ParagraphMetrics & pm = par_metrics_[pit];
332 // no RTL boundary in empty paragraph
333 if (pm.rows().empty())
336 pos_type endpos = pm.getRow(pos - 1, false).endpos();
337 pos_type startpos = pm.getRow(pos, false).pos();
338 // no RTL boundary at line start:
339 // abc\n -> toggle to RTL -> abc\n (and not: abc\n|
341 if (pos == startpos && pos == endpos) // start of cur row, end of prev row
344 Paragraph const & par = text_->getPar(pit);
345 // no RTL boundary at line break:
346 // abc|\n -> move right -> abc\n (and not: abc\n|
348 if (startpos == pos && endpos == pos && endpos != par.size()
349 && (par.isNewline(pos - 1)
350 || par.isLineSeparator(pos - 1)
351 || par.isSeparator(pos - 1)))
354 bool left = font.isVisibleRightToLeft();
356 if (pos == par.size())
357 right = par.isRTL(bv_->buffer().params());
359 right = displayFont(pit, pos).isVisibleRightToLeft();
361 return left != right;
365 bool TextMetrics::redoParagraph(pit_type const pit)
367 Paragraph & par = text_->getPar(pit);
368 // IMPORTANT NOTE: We pass 'false' explicitly in order to not call
369 // redoParagraph() recursively inside parMetrics.
370 Dimension old_dim = parMetrics(pit, false).dim();
371 ParagraphMetrics & pm = par_metrics_[pit];
374 Buffer & buffer = bv_->buffer();
375 main_text_ = (text_ == &buffer.text());
376 bool changed = false;
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 int const moveCursor = par.checkBiblio(buffer);
386 const_cast<Cursor &>(bv_->cursor()).posForward();
387 else if (moveCursor < 0) {
388 Cursor & cursor = const_cast<Cursor &>(bv_->cursor());
389 if (cursor.pos() >= -moveCursor)
390 cursor.posBackward();
393 // Optimisation: this is used in the next two loops
394 // so better to calculate that once here.
395 int const right_margin = rightMargin(pm);
397 // iterator pointing to paragraph to resolve macros
398 DocIterator parPos = text_->macrocontextPosition();
402 LYXERR(Debug::INFO, "MacroContext not initialised!"
403 << " Going through the buffer again and hope"
404 << " the context is better then.");
405 // FIXME audit updateBuffer calls
406 // This should not be here, but it is not clear yet where else it
408 bv_->buffer().updateBuffer();
409 parPos = text_->macrocontextPosition();
410 LASSERT(!parPos.empty(), /**/);
415 Font const bufferfont = buffer.params().getFont();
416 InsetList::const_iterator ii = par.insetList().begin();
417 InsetList::const_iterator iend = par.insetList().end();
418 for (; ii != iend; ++ii) {
419 // FIXME Doesn't this HAVE to be non-empty?
420 // position already initialized?
421 if (!parPos.empty()) {
422 parPos.pos() = ii->pos;
424 // A macro template would normally not be visible
425 // by itself. But the tex macro semantics allow
426 // recursion, so we artifically take the context
427 // after the macro template to simulate this.
428 if (ii->inset->lyxCode() == MATHMACRO_CODE)
432 // do the metric calculation
434 int const w = max_width_ - leftMargin(max_width_, pit, ii->pos)
436 Font const & font = ii->inset->inheritFont() ?
437 displayFont(pit, ii->pos) : bufferfont;
438 MacroContext mc(&buffer, parPos);
439 MetricsInfo mi(bv_, font.fontInfo(), w, mc);
440 ii->inset->metrics(mi, dim);
441 Dimension const old_dim = pm.insetDimension(ii->inset);
442 if (old_dim != dim) {
443 pm.setInsetDimension(ii->inset, dim);
448 par.setBeginOfBody();
450 size_t row_index = 0;
451 // maximum pixel width of a row
452 int width = max_width_ - right_margin; // - leftMargin(max_width_, pit, row);
455 pos_type end = rowBreakPoint(width, pit, first);
456 if (row_index || end < par.size())
457 // If there is more than one row, expand the text to
458 // the full allowable width. This setting here is needed
459 // for the computeRowMetrics() below.
460 dim_.wid = max_width_;
462 dim = rowHeight(pit, first, end);
463 dim.wid = rowWidth(right_margin, pit, first, end);
464 if (row_index == pm.rows().size())
465 pm.rows().push_back(Row());
466 Row & row = pm.rows()[row_index];
467 row.setChanged(false);
470 row.setDimension(dim);
471 int const max_row_width = max(dim_.wid, dim.wid);
472 computeRowMetrics(pit, row, max_row_width);
476 pm.dim().wid = max(pm.dim().wid, dim.wid);
477 pm.dim().des += dim.height();
478 } while (first < par.size());
480 if (row_index < pm.rows().size())
481 pm.rows().resize(row_index);
483 // Make sure that if a par ends in newline, there is one more row
485 if (first > 0 && par.isNewline(first - 1)) {
486 Dimension dim = rowHeight(pit, first, first);
487 dim.wid = rowWidth(right_margin, pit, first, first);
488 if (row_index == pm.rows().size())
489 pm.rows().push_back(Row());
490 Row & row = pm.rows()[row_index];
491 row.setChanged(false);
494 row.setDimension(dim);
495 int const max_row_width = max(dim_.wid, dim.wid);
496 computeRowMetrics(pit, row, max_row_width);
497 pm.dim().des += dim.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 void TextMetrics::computeRowMetrics(pit_type const pit,
510 Row & row, int width) const
515 Paragraph const & par = text_->getPar(pit);
517 double w = width - row.width();
518 // FIXME: put back this assertion when the crash on new doc is solved.
519 //LASSERT(w >= 0, /**/);
521 //lyxerr << "\ndim_.wid " << dim_.wid << endl;
522 //lyxerr << "row.width() " << row.width() << endl;
523 //lyxerr << "w " << w << endl;
525 bool const is_rtl = text_->isRTL(par);
527 row.x = rightMargin(pit);
529 row.x = leftMargin(max_width_, pit, row.pos());
531 // is there a manual margin with a manual label
532 Layout const & layout = par.layout();
534 if (layout.margintype == MARGIN_MANUAL
535 && layout.labeltype == LABEL_MANUAL) {
536 /// We might have real hfills in the label part
537 int nlh = numberOfLabelHfills(par, row);
539 // A manual label par (e.g. List) has an auto-hfill
540 // between the label text and the body of the
542 // But we don't want to do this auto hfill if the par
547 if (nlh && !par.getLabelWidthString().empty())
548 row.label_hfill = labelFill(pit, row) / double(nlh);
552 // are there any hfills in the row?
553 if (int const nh = numberOfHfills(par, row)) {
555 hfill = w / double(nh);
556 // we don't have to look at the alignment if it is ALIGN_LEFT and
557 // if the row is already larger then the permitted width as then
558 // we force the LEFT_ALIGN'edness!
559 } else if (int(row.width()) < max_width_) {
560 // is it block, flushleft or flushright?
561 // set x how you need it
563 if (par.params().align() == LYX_ALIGN_LAYOUT)
564 align = layout.align;
566 align = par.params().align();
568 // handle alignment inside tabular cells
569 Inset const & owner = text_->inset();
570 switch (owner.contentAlignment()) {
571 case LYX_ALIGN_CENTER:
573 case LYX_ALIGN_RIGHT:
574 if (align == LYX_ALIGN_NONE
575 || align == LYX_ALIGN_BLOCK)
576 align = owner.contentAlignment();
579 // unchanged (use align)
583 // Display-style insets should always be on a centered row
584 if (Inset const * inset = par.getInset(row.pos())) {
585 switch (inset->display()) {
586 case Inset::AlignLeft:
587 align = LYX_ALIGN_BLOCK;
589 case Inset::AlignCenter:
590 align = LYX_ALIGN_CENTER;
593 // unchanged (use align)
595 case Inset::AlignRight:
596 align = LYX_ALIGN_RIGHT;
601 // Has the user requested we not justify stuff?
602 if (!bv_->buffer().params().justification
603 && align == LYX_ALIGN_BLOCK)
604 align = LYX_ALIGN_LEFT;
607 case LYX_ALIGN_BLOCK: {
608 int const ns = numberOfSeparators(par, row);
609 bool disp_inset = false;
610 if (row.endpos() < par.size()) {
611 Inset const * in = par.getInset(row.endpos());
613 disp_inset = in->display();
615 // If we have separators, this is not the last row of a
616 // par, does not end in newline, and is not row above a
617 // display inset... then stretch it
619 && row.endpos() < par.size()
620 && !par.isNewline(row.endpos() - 1)
623 row.separator = w / ns;
624 //lyxerr << "row.separator " << row.separator << endl;
625 //lyxerr << "ns " << ns << endl;
631 case LYX_ALIGN_RIGHT:
634 case LYX_ALIGN_CENTER:
641 pos_type body_pos = par.beginOfBody();
642 pos_type end = row.endpos();
645 && (body_pos > end || !par.isLineSeparator(body_pos - 1)))
647 row.x += theFontMetrics(text_->labelFont(par)).
648 width(layout.labelsep);
650 row.x += row.label_hfill;
654 pos_type const endpos = row.endpos();
655 pos_type body_pos = par.beginOfBody();
657 && (body_pos > endpos || !par.isLineSeparator(body_pos - 1)))
660 ParagraphMetrics & pm = par_metrics_[pit];
661 InsetList::const_iterator ii = par.insetList().begin();
662 InsetList::const_iterator iend = par.insetList().end();
663 for ( ; ii != iend; ++ii) {
664 if (ii->pos >= endpos || ii->pos < row.pos()
665 || (ii->inset->lyxCode() != SPACE_CODE ||
666 !ii->inset->isStretchableSpace()))
668 Dimension dim = row.dimension();
669 if (pm.hfillExpansion(row, ii->pos))
670 dim.wid = int(ii->pos >= body_pos ?
671 max(hfill, 5.0) : row.label_hfill);
674 // Cache the inset dimension.
675 bv_->coordCache().insets().add(ii->inset, dim);
676 pm.setInsetDimension(ii->inset, dim);
681 int TextMetrics::labelFill(pit_type const pit, Row const & row) const
683 Paragraph const & par = text_->getPar(pit);
685 pos_type last = par.beginOfBody();
686 LASSERT(last > 0, /**/);
688 // -1 because a label ends with a space that is in the label
691 // a separator at this end does not count
692 if (par.isLineSeparator(last))
696 for (pos_type i = row.pos(); i <= last; ++i)
697 w += singleWidth(pit, i);
699 docstring const & label = par.params().labelWidthString();
703 FontMetrics const & fm
704 = theFontMetrics(text_->labelFont(par));
706 return max(0, fm.width(label) - w);
710 // this needs special handling - only newlines count as a break point
711 static pos_type addressBreakPoint(pos_type i, Paragraph const & par)
713 pos_type const end = par.size();
716 if (par.isNewline(i))
723 int TextMetrics::labelEnd(pit_type const pit) const
725 // labelEnd is only needed if the layout fills a flushleft label.
726 if (text_->getPar(pit).layout().margintype != MARGIN_MANUAL)
728 // return the beginning of the body
729 return leftMargin(max_width_, pit);
735 * Calling Text::getFont is slow. While rebreaking we scan a
736 * paragraph from left to right calling getFont for every char. This
737 * simple class address this problem by hidding an optimization trick
738 * (not mine btw -AB): the font is reused in the whole font span. The
739 * class handles transparently the "hidden" (not part of the fontlist)
740 * label font (as getFont does).
746 FontIterator(TextMetrics const & tm,
747 Paragraph const & par, pit_type pit, pos_type pos)
748 : tm_(tm), par_(par), pit_(pit), pos_(pos),
749 font_(tm.displayFont(pit, pos)),
750 endspan_(par.fontSpan(pos).last),
751 bodypos_(par.beginOfBody())
755 Font const & operator*() const { return font_; }
758 FontIterator & operator++()
761 if (pos_ > endspan_ || pos_ == bodypos_) {
762 font_ = tm_.displayFont(pit_, pos_);
763 endspan_ = par_.fontSpan(pos_).last;
769 Font * operator->() { return &font_; }
773 TextMetrics const & tm_;
775 Paragraph const & par_;
790 pos_type TextMetrics::rowBreakPoint(int width, pit_type const pit,
793 ParagraphMetrics const & pm = par_metrics_[pit];
794 Paragraph const & par = text_->getPar(pit);
795 pos_type const end = par.size();
796 if (pos == end || width < 0)
799 Layout const & layout = par.layout();
802 //FIXME: As long as leftMargin() is not correctly implemented for
803 // MARGIN_RIGHT_ADDRESS_BOX, we should also not do this here.
804 // Otherwise, long rows will be painted off the screen.
805 if (layout.margintype == MARGIN_RIGHT_ADDRESS_BOX)
806 return addressBreakPoint(pos, par);
809 pos_type const body_pos = par.beginOfBody();
811 // check for possible inline completion
812 DocIterator const & inlineCompletionPos = bv_->inlineCompletionPos();
813 pos_type inlineCompletionLPos = -1;
814 if (inlineCompletionPos.inTexted()
815 && inlineCompletionPos.text() == text_
816 && inlineCompletionPos.pit() == pit) {
817 // draw logically behind the previous character
818 inlineCompletionLPos = inlineCompletionPos.pos() - 1;
821 // Now we iterate through until we reach the right margin
822 // or the end of the par, then choose the possible break
825 int label_end = labelEnd(pit);
826 int const left = leftMargin(max_width_, pit, pos);
829 // pixel width since last breakpoint
832 docstring const s(1, char_type(0x00B6));
834 int par_marker_width = theFontMetrics(f).width(s);
836 FontIterator fi = FontIterator(*this, par, pit, pos);
837 pos_type point = end;
840 ParagraphList const & pars_ = text_->paragraphs();
841 bool const draw_par_end_marker = lyxrc.paragraph_markers
842 && size_type(pit + 1) < pars_.size();
844 for ( ; i < end; ++i, ++fi) {
845 int thiswidth = pm.singleWidth(i, *fi);
847 if (draw_par_end_marker && i == end - 1)
848 // enlarge the last character to hold the end-of-par marker
849 thiswidth += par_marker_width;
851 // add inline completion width
852 if (inlineCompletionLPos == i) {
853 docstring const & completion = bv_->inlineCompletion();
854 if (completion.length() > 0)
855 thiswidth += theFontMetrics(*fi).width(completion);
858 // add the auto-hfill from label end to the body
859 if (body_pos && i == body_pos) {
860 FontMetrics const & fm = theFontMetrics(
861 text_->labelFont(par));
862 int add = fm.width(layout.labelsep);
863 if (par.isLineSeparator(i - 1))
864 add -= singleWidth(pit, i - 1);
866 add = max(add, label_end - x);
871 chunkwidth += thiswidth;
873 // break before a character that will fall off
874 // the right of the row
876 // if no break before, break here
877 if (point == end || chunkwidth >= width - left) {
883 // exit on last registered breakpoint:
887 if (par.isNewline(i)) {
891 Inset const * inset = 0;
894 if ((inset = par.getInset(i + 1)) && inset->display()) {
899 if ((inset = par.getInset(i)) && inset->display()) {
905 inset = par.getInset(i);
906 if (!inset || inset->isChar()) {
907 // some insets are line separators too
908 if (par.isLineSeparator(i)) {
909 // register breakpoint:
916 // maybe found one, but the par is short enough.
917 if (i == end && x < width)
920 // manual labels cannot be broken in LaTeX. But we
921 // want to make our on-screen rendering of footnotes
923 if (body_pos && point < body_pos)
930 int TextMetrics::rowWidth(int right_margin, pit_type const pit,
931 pos_type const first, pos_type const end) const
933 // get the pure distance
934 ParagraphMetrics const & pm = par_metrics_[pit];
935 Paragraph const & par = text_->getPar(pit);
936 int w = leftMargin(max_width_, pit, first);
937 int label_end = labelEnd(pit);
939 // check for possible inline completion
940 DocIterator const & inlineCompletionPos = bv_->inlineCompletionPos();
941 pos_type inlineCompletionLPos = -1;
942 if (inlineCompletionPos.inTexted()
943 && inlineCompletionPos.text() == text_
944 && inlineCompletionPos.pit() == pit) {
945 // draw logically behind the previous character
946 inlineCompletionLPos = inlineCompletionPos.pos() - 1;
949 pos_type const body_pos = par.beginOfBody();
953 FontIterator fi = FontIterator(*this, par, pit, i);
954 for ( ; i < end; ++i, ++fi) {
955 if (body_pos > 0 && i == body_pos) {
956 FontMetrics const & fm = theFontMetrics(
957 text_->labelFont(par));
958 w += fm.width(par.layout().labelsep);
959 if (par.isLineSeparator(i - 1))
960 w -= singleWidth(pit, i - 1);
961 w = max(w, label_end);
964 // a line separator at the end of a line (but not at the end of a
965 // paragraph) will not be drawn and should therefore not count for
967 if (!par.isLineSeparator(i) || i != end - 1 || end == par.size())
968 w += pm.singleWidth(i, *fi);
970 // add inline completion width
971 if (inlineCompletionLPos == i) {
972 docstring const & completion = bv_->inlineCompletion();
973 if (completion.length() > 0)
974 w += theFontMetrics(*fi).width(completion);
979 // count the paragraph end marker.
980 if (end == par.size() && lyxrc.paragraph_markers) {
981 ParagraphList const & pars_ = text_->paragraphs();
982 if (size_type(pit + 1) < pars_.size()) {
983 // enlarge the last character to hold the
985 docstring const s(1, char_type(0x00B6));
987 w += theFontMetrics(f).width(s);
991 if (body_pos > 0 && body_pos >= end) {
992 FontMetrics const & fm = theFontMetrics(
993 text_->labelFont(par));
994 w += fm.width(par.layout().labelsep);
995 if (end > 0 && par.isLineSeparator(end - 1))
996 w -= singleWidth(pit, end - 1);
997 w = max(w, label_end);
1000 return w + right_margin;
1004 Dimension TextMetrics::rowHeight(pit_type const pit, pos_type const first,
1005 pos_type const end, bool topBottomSpace) const
1007 Paragraph const & par = text_->getPar(pit);
1008 // get the maximum ascent and the maximum descent
1009 double layoutasc = 0;
1010 double layoutdesc = 0;
1011 double const dh = defaultRowHeight();
1013 // ok, let us initialize the maxasc and maxdesc value.
1014 // Only the fontsize count. The other properties
1015 // are taken from the layoutfont. Nicer on the screen :)
1016 Layout const & layout = par.layout();
1018 // as max get the first character of this row then it can
1019 // increase but not decrease the height. Just some point to
1020 // start with so we don't have to do the assignment below too
1022 Buffer const & buffer = bv_->buffer();
1023 Font font = displayFont(pit, first);
1024 FontSize const tmpsize = font.fontInfo().size();
1025 font.fontInfo() = text_->layoutFont(pit);
1026 FontSize const size = font.fontInfo().size();
1027 font.fontInfo().setSize(tmpsize);
1029 FontInfo labelfont = text_->labelFont(par);
1031 FontMetrics const & labelfont_metrics = theFontMetrics(labelfont);
1032 FontMetrics const & fontmetrics = theFontMetrics(font);
1034 // these are minimum values
1035 double const spacing_val = layout.spacing.getValue()
1036 * text_->spacing(par);
1037 //lyxerr << "spacing_val = " << spacing_val << endl;
1038 int maxasc = int(fontmetrics.maxAscent() * spacing_val);
1039 int maxdesc = int(fontmetrics.maxDescent() * spacing_val);
1041 // insets may be taller
1042 ParagraphMetrics const & pm = par_metrics_[pit];
1043 InsetList::const_iterator ii = par.insetList().begin();
1044 InsetList::const_iterator iend = par.insetList().end();
1045 for ( ; ii != iend; ++ii) {
1046 if (ii->pos >= first && ii->pos < end) {
1047 Dimension const & dim = pm.insetDimension(ii->inset);
1048 maxasc = max(maxasc, dim.ascent());
1049 maxdesc = max(maxdesc, dim.descent());
1053 // Check if any custom fonts are larger (Asger)
1054 // This is not completely correct, but we can live with the small,
1055 // cosmetic error for now.
1059 par.highestFontInRange(first, end, size);
1060 if (maxsize > font.fontInfo().size()) {
1061 // use standard paragraph font with the maximal size
1062 FontInfo maxfont = font.fontInfo();
1063 maxfont.setSize(maxsize);
1064 FontMetrics const & maxfontmetrics = theFontMetrics(maxfont);
1065 maxasc = max(maxasc, maxfontmetrics.maxAscent());
1066 maxdesc = max(maxdesc, maxfontmetrics.maxDescent());
1069 // This is nicer with box insets:
1073 ParagraphList const & pars = text_->paragraphs();
1074 Inset const & inset = text_->inset();
1076 // is it a top line?
1077 if (first == 0 && topBottomSpace) {
1078 BufferParams const & bufparams = buffer.params();
1079 // some parskips VERY EASY IMPLEMENTATION
1080 if (bufparams.paragraph_separation == BufferParams::ParagraphSkipSeparation
1081 && !inset.getLayout().parbreakIsNewline()
1082 && !par.layout().parbreak_is_newline
1084 && ((layout.isParagraph() && par.getDepth() == 0)
1085 || (pars[pit - 1].layout().isParagraph()
1086 && pars[pit - 1].getDepth() == 0))) {
1087 maxasc += bufparams.getDefSkip().inPixels(*bv_);
1090 if (par.params().startOfAppendix())
1091 maxasc += int(3 * dh);
1093 // This is special code for the chapter, since the label of this
1094 // layout is printed in an extra row
1095 if (layout.counter == "chapter"
1096 && !par.params().labelString().empty()) {
1097 labeladdon = int(labelfont_metrics.maxHeight()
1098 * layout.spacing.getValue()
1099 * text_->spacing(par));
1102 // special code for the top label
1103 if ((layout.labeltype == LABEL_TOP_ENVIRONMENT
1104 || layout.labeltype == LABEL_BIBLIO
1105 || layout.labeltype == LABEL_CENTERED_TOP_ENVIRONMENT)
1106 && text_->isFirstInSequence(pit)
1107 && !par.labelString().empty())
1110 labelfont_metrics.maxHeight()
1111 * layout.spacing.getValue()
1112 * text_->spacing(par)
1113 + (layout.topsep + layout.labelbottomsep) * dh);
1116 // Add the layout spaces, for example before and after
1117 // a section, or between the items of a itemize or enumerate
1120 pit_type prev = text_->depthHook(pit, par.getDepth());
1121 Paragraph const & prevpar = pars[prev];
1123 && prevpar.layout() == layout
1124 && prevpar.getDepth() == par.getDepth()
1125 && prevpar.getLabelWidthString()
1126 == par.getLabelWidthString()) {
1127 layoutasc = layout.itemsep * dh;
1128 } else if (pit != 0 || first != 0) {
1129 if (layout.topsep > 0)
1130 layoutasc = layout.topsep * dh;
1133 prev = text_->outerHook(pit);
1134 if (prev != pit_type(pars.size())) {
1135 maxasc += int(pars[prev].layout().parsep * dh);
1136 } else if (pit != 0) {
1137 Paragraph const & prevpar = pars[pit - 1];
1138 if (prevpar.getDepth() != 0 ||
1139 prevpar.layout() == layout) {
1140 maxasc += int(layout.parsep * dh);
1145 // is it a bottom line?
1146 if (end >= par.size() && topBottomSpace) {
1147 // add the layout spaces, for example before and after
1148 // a section, or between the items of a itemize or enumerate
1150 pit_type nextpit = pit + 1;
1151 if (nextpit != pit_type(pars.size())) {
1152 pit_type cpit = pit;
1156 if (pars[cpit].getDepth() > pars[nextpit].getDepth()) {
1157 usual = pars[cpit].layout().bottomsep * dh;
1158 cpit = text_->depthHook(cpit, pars[nextpit].getDepth());
1159 if (pars[cpit].layout() != pars[nextpit].layout()
1160 || pars[nextpit].getLabelWidthString() != pars[cpit].getLabelWidthString())
1162 unusual = pars[cpit].layout().bottomsep * dh;
1164 layoutdesc = max(unusual, usual);
1165 } else if (pars[cpit].getDepth() == pars[nextpit].getDepth()) {
1166 if (pars[cpit].layout() != pars[nextpit].layout()
1167 || pars[nextpit].getLabelWidthString() != pars[cpit].getLabelWidthString())
1168 layoutdesc = int(pars[cpit].layout().bottomsep * dh);
1173 // incalculate the layout spaces
1174 maxasc += int(layoutasc * 2 / (2 + pars[pit].getDepth()));
1175 maxdesc += int(layoutdesc * 2 / (2 + pars[pit].getDepth()));
1177 // FIXME: the correct way is to do the following is to move the
1178 // following code in another method specially tailored for the
1179 // main Text. The following test is thus bogus.
1180 // Top and bottom margin of the document (only at top-level)
1181 if (main_text_ && topBottomSpace) {
1182 if (pit == 0 && first == 0)
1184 if (pit + 1 == pit_type(pars.size()) &&
1185 end == par.size() &&
1186 !(end > 0 && par.isNewline(end - 1)))
1190 return Dimension(0, maxasc + labeladdon, maxdesc);
1194 // x is an absolute screen coord
1195 // returns the column near the specified x-coordinate of the row
1196 // x is set to the real beginning of this column
1197 pos_type TextMetrics::getColumnNearX(pit_type const pit,
1198 Row const & row, int & x, bool & boundary) const
1200 Buffer const & buffer = bv_->buffer();
1202 /// For the main Text, it is possible that this pit is not
1203 /// yet in the CoordCache when moving cursor up.
1204 /// x Paragraph coordinate is always 0 for main text anyway.
1205 int const xo = origin_.x_;
1207 Paragraph const & par = text_->getPar(pit);
1209 bidi.computeTables(par, buffer, row);
1211 pos_type vc = row.pos();
1212 pos_type end = row.endpos();
1214 Layout const & layout = par.layout();
1216 bool left_side = false;
1218 pos_type body_pos = par.beginOfBody();
1220 double tmpx = row.x;
1221 double last_tmpx = tmpx;
1224 (body_pos > end || !par.isLineSeparator(body_pos - 1)))
1227 // check for empty row
1233 // This (rtl_support test) is not needed, but gives
1234 // some speedup if rtl_support == false
1235 bool const lastrow = lyxrc.rtl_support && row.endpos() == par.size();
1237 // If lastrow is false, we don't need to compute
1238 // the value of rtl.
1239 bool const rtl_on_lastrow = lastrow ? text_->isRTL(par) : false;
1241 // if the first character is a separator, and we are in RTL
1242 // text, this character will not be painted on screen
1243 // and thus we should not count it and skip to the next. Only
1244 // in freespacing paragraphs, this first character is painted.
1245 if (!par.isFreeSpacing() && par.isSeparator(bidi.vis2log(vc)))
1248 while (vc < end && tmpx <= x) {
1249 c = bidi.vis2log(vc);
1251 if (body_pos > 0 && c == body_pos - 1) {
1252 FontMetrics const & fm = theFontMetrics(
1253 text_->labelFont(par));
1254 tmpx += row.label_hfill + fm.width(layout.labelsep);
1255 if (par.isLineSeparator(body_pos - 1))
1256 tmpx -= singleWidth(pit, body_pos - 1);
1259 tmpx += singleWidth(pit, c);
1260 if (par.isSeparator(c) && c >= body_pos)
1261 tmpx += row.separator;
1265 if ((tmpx + last_tmpx) / 2 > x) {
1270 LASSERT(vc <= end, /**/); // This shouldn't happen.
1275 ((rtl_on_lastrow && left_side && vc == row.pos() && x < tmpx - 5) ||
1276 (!rtl_on_lastrow && !left_side && vc == end && x > tmpx + 5))) {
1277 if (!par.isNewline(end - 1))
1279 } else if (vc == row.pos()) {
1280 c = bidi.vis2log(vc);
1281 if (bidi.level(c) % 2 == 1)
1284 c = bidi.vis2log(vc - 1);
1285 bool const rtl = (bidi.level(c) % 2 == 1);
1286 if (left_side == rtl) {
1288 boundary = isRTLBoundary(pit, c);
1292 // I believe this code is not needed anymore (Jug 20050717)
1294 // The following code is necessary because the cursor position past
1295 // the last char in a row is logically equivalent to that before
1296 // the first char in the next row. That's why insets causing row
1297 // divisions -- Newline and display-style insets -- must be treated
1298 // specially, so cursor up/down doesn't get stuck in an air gap -- MV
1299 // Newline inset, air gap below:
1300 if (row.pos() < end && c >= end && par.isNewline(end - 1)) {
1301 if (bidi.level(end -1) % 2 == 0)
1302 tmpx -= singleWidth(pit, end - 1);
1304 tmpx += singleWidth(pit, end - 1);
1308 // Air gap above display inset:
1309 if (row.pos() < end && c >= end && end < par.size()
1310 && par.isInset(end) && par.getInset(end)->display()) {
1313 // Air gap below display inset:
1314 if (row.pos() < end && c >= end && par.isInset(end - 1)
1315 && par.getInset(end - 1)->display()) {
1321 pos_type const col = c - row.pos();
1323 if (!c || end == par.size())
1326 if (c==end && !par.isLineSeparator(c-1) && !par.isNewline(c-1)) {
1331 return min(col, end - 1 - row.pos());
1335 pos_type TextMetrics::x2pos(pit_type pit, int row, int x) const
1337 // We play safe and use parMetrics(pit) to make sure the
1338 // ParagraphMetrics will be redone and OK to use if needed.
1339 // Otherwise we would use an empty ParagraphMetrics in
1340 // upDownInText() while in selection mode.
1341 ParagraphMetrics const & pm = parMetrics(pit);
1343 LASSERT(row < int(pm.rows().size()), /**/);
1345 Row const & r = pm.rows()[row];
1346 return r.pos() + getColumnNearX(pit, r, x, bound);
1350 void TextMetrics::newParMetricsDown()
1352 pair<pit_type, ParagraphMetrics> const & last = *par_metrics_.rbegin();
1353 pit_type const pit = last.first + 1;
1354 if (pit == int(text_->paragraphs().size()))
1357 // do it and update its position.
1359 par_metrics_[pit].setPosition(last.second.position()
1360 + last.second.descent() + par_metrics_[pit].ascent());
1364 void TextMetrics::newParMetricsUp()
1366 pair<pit_type, ParagraphMetrics> const & first = *par_metrics_.begin();
1367 if (first.first == 0)
1370 pit_type const pit = first.first - 1;
1371 // do it and update its position.
1373 par_metrics_[pit].setPosition(first.second.position()
1374 - first.second.ascent() - par_metrics_[pit].descent());
1377 // y is screen coordinate
1378 pit_type TextMetrics::getPitNearY(int y)
1380 LASSERT(!text_->paragraphs().empty(), return -1);
1381 LASSERT(!par_metrics_.empty(), return -1);
1382 LYXERR(Debug::DEBUG, "y: " << y << " cache size: " << par_metrics_.size());
1384 // look for highest numbered paragraph with y coordinate less than given y
1387 ParMetricsCache::const_iterator it = par_metrics_.begin();
1388 ParMetricsCache::const_iterator et = par_metrics_.end();
1389 ParMetricsCache::const_iterator last = et; last--;
1391 ParagraphMetrics const & pm = it->second;
1393 if (y < it->second.position() - int(pm.ascent())) {
1394 // We are looking for a position that is before the first paragraph in
1395 // the cache (which is in priciple off-screen, that is before the
1398 // We are already at the first paragraph in the inset.
1400 // OK, this is the paragraph we are looking for.
1401 pit = it->first - 1;
1406 ParagraphMetrics const & pm_last = par_metrics_[last->first];
1408 if (y >= last->second.position() + int(pm_last.descent())) {
1409 // We are looking for a position that is after the last paragraph in
1410 // the cache (which is in priciple off-screen), that is before the
1412 pit = last->first + 1;
1413 if (pit == int(text_->paragraphs().size()))
1414 // We are already at the last paragraph in the inset.
1416 // OK, this is the paragraph we are looking for.
1417 newParMetricsDown();
1421 for (; it != et; ++it) {
1422 LYXERR(Debug::DEBUG, "examining: pit: " << it->first
1423 << " y: " << it->second.position());
1425 ParagraphMetrics const & pm = par_metrics_[it->first];
1427 if (it->first >= pit && int(it->second.position()) - int(pm.ascent()) <= y) {
1429 yy = it->second.position();
1433 LYXERR(Debug::DEBUG, "found best y: " << yy << " for pit: " << pit);
1439 Row const & TextMetrics::getPitAndRowNearY(int & y, pit_type & pit,
1440 bool assert_in_view, bool up)
1442 ParagraphMetrics const & pm = par_metrics_[pit];
1444 int yy = pm.position() - pm.ascent();
1445 LASSERT(!pm.rows().empty(), /**/);
1446 RowList::const_iterator rit = pm.rows().begin();
1447 RowList::const_iterator rlast = pm.rows().end();
1449 for (; rit != rlast; yy += rit->height(), ++rit)
1450 if (yy + rit->height() > y)
1453 if (assert_in_view) {
1454 if (!up && yy + rit->height() > y) {
1455 if (rit != pm.rows().begin()) {
1458 } else if (pit != 0) {
1461 ParagraphMetrics const & pm2 = par_metrics_[pit];
1462 rit = pm2.rows().end();
1466 } else if (up && yy != y) {
1468 y = yy + rit->height();
1470 } else if (pit < int(text_->paragraphs().size()) - 1) {
1472 newParMetricsDown();
1473 ParagraphMetrics const & pm2 = par_metrics_[pit];
1474 rit = pm2.rows().begin();
1483 // x,y are absolute screen coordinates
1484 // sets cursor recursively descending into nested editable insets
1485 Inset * TextMetrics::editXY(Cursor & cur, int x, int y,
1486 bool assert_in_view, bool up)
1488 if (lyxerr.debugging(Debug::WORKAREA)) {
1489 LYXERR0("TextMetrics::editXY(cur, " << x << ", " << y << ")");
1490 cur.bv().coordCache().dump();
1492 pit_type pit = getPitNearY(y);
1493 LASSERT(pit != -1, return 0);
1495 int yy = y; // is modified by getPitAndRowNearY
1496 Row const & row = getPitAndRowNearY(yy, pit, assert_in_view, up);
1498 bool bound = false; // is modified by getColumnNearX
1499 int xx = x; // is modified by getColumnNearX
1500 pos_type const pos = row.pos()
1501 + getColumnNearX(pit, row, xx, bound);
1504 cur.boundary(bound);
1507 // try to descend into nested insets
1508 Inset * inset = checkInsetHit(x, yy);
1509 //lyxerr << "inset " << inset << " hit at x: " << x << " y: " << y << endl;
1511 // Either we deconst editXY or better we move current_font
1512 // and real_current_font to Cursor
1513 // FIXME: what is needed now that current_font and real_current_font
1515 cur.setCurrentFont();
1519 ParagraphList const & pars = text_->paragraphs();
1520 Inset const * inset_before = pos ? pars[pit].getInset(pos - 1) : 0;
1522 // This should be just before or just behind the
1523 // cursor position set above.
1524 LASSERT(inset == inset_before
1525 || inset == pars[pit].getInset(pos), return 0);
1527 // Make sure the cursor points to the position before
1529 if (inset == inset_before) {
1531 cur.boundary(false);
1534 // Try to descend recursively inside the inset.
1535 inset = inset->editXY(cur, x, yy);
1537 if (cur.top().text() == text_)
1538 cur.setCurrentFont();
1543 void TextMetrics::setCursorFromCoordinates(Cursor & cur, int const x, int const y)
1545 LASSERT(text_ == cur.text(), /**/);
1546 pit_type pit = getPitNearY(y);
1547 LASSERT(pit != -1, return);
1549 ParagraphMetrics const & pm = par_metrics_[pit];
1551 int yy = pm.position() - pm.ascent();
1552 LYXERR(Debug::DEBUG, "x: " << x << " y: " << y <<
1553 " pit: " << pit << " yy: " << yy);
1556 LASSERT(pm.rows().size(), /**/);
1557 for (; r < int(pm.rows().size()) - 1; ++r) {
1558 Row const & row = pm.rows()[r];
1559 if (int(yy + row.height()) > y)
1564 Row const & row = pm.rows()[r];
1566 LYXERR(Debug::DEBUG, "row " << r << " from pos: " << row.pos());
1570 pos_type const pos = row.pos() + getColumnNearX(pit, row, xx, bound);
1572 LYXERR(Debug::DEBUG, "setting cursor pit: " << pit << " pos: " << pos);
1574 text_->setCursor(cur, pit, pos, true, bound);
1575 // remember new position.
1580 //takes screen x,y coordinates
1581 Inset * TextMetrics::checkInsetHit(int x, int y)
1583 pit_type pit = getPitNearY(y);
1584 LASSERT(pit != -1, return 0);
1586 Paragraph const & par = text_->paragraphs()[pit];
1587 ParagraphMetrics const & pm = par_metrics_[pit];
1589 LYXERR(Debug::DEBUG, "x: " << x << " y: " << y << " pit: " << pit);
1591 InsetList::const_iterator iit = par.insetList().begin();
1592 InsetList::const_iterator iend = par.insetList().end();
1593 for (; iit != iend; ++iit) {
1594 Inset * inset = iit->inset;
1596 LYXERR(Debug::DEBUG, "examining inset " << inset);
1598 if (!bv_->coordCache().getInsets().has(inset)) {
1599 LYXERR(Debug::DEBUG, "inset has no cached position");
1603 Dimension const & dim = pm.insetDimension(inset);
1604 Point p = bv_->coordCache().getInsets().xy(inset);
1606 LYXERR(Debug::DEBUG, "xo: " << p.x_ << "..." << p.x_ + dim.wid
1607 << " yo: " << p.y_ - dim.asc << "..." << p.y_ + dim.des);
1610 && x <= p.x_ + dim.wid
1611 && y >= p.y_ - dim.asc
1612 && y <= p.y_ + dim.des) {
1613 LYXERR(Debug::DEBUG, "Hit inset: " << inset);
1618 LYXERR(Debug::DEBUG, "No inset hit. ");
1623 int TextMetrics::cursorX(CursorSlice const & sl,
1624 bool boundary) const
1626 LASSERT(sl.text() == text_, /**/);
1627 pit_type const pit = sl.pit();
1628 Paragraph const & par = text_->paragraphs()[pit];
1629 ParagraphMetrics const & pm = par_metrics_[pit];
1630 if (pm.rows().empty())
1633 pos_type ppos = sl.pos();
1634 // Correct position in front of big insets
1635 bool const boundary_correction = ppos != 0 && boundary;
1636 if (boundary_correction)
1639 Row const & row = pm.getRow(sl.pos(), boundary);
1641 pos_type cursor_vpos = 0;
1643 Buffer const & buffer = bv_->buffer();
1646 bidi.computeTables(par, buffer, row);
1648 pos_type const row_pos = row.pos();
1649 pos_type const end = row.endpos();
1650 // Spaces at logical line breaks in bidi text must be skipped during
1651 // cursor positioning. However, they may appear visually in the middle
1652 // of a row; they must be skipped, wherever they are...
1653 // * logically "abc_[HEBREW_\nHEBREW]"
1654 // * visually "abc_[_WERBEH\nWERBEH]"
1655 pos_type skipped_sep_vpos = -1;
1658 cursor_vpos = row_pos;
1659 else if (ppos >= end)
1660 cursor_vpos = text_->isRTL(par) ? row_pos : end;
1661 else if (ppos > row_pos && ppos >= end)
1662 //FIXME: this code is never reached!
1663 // (see http://www.lyx.org/trac/changeset/8251)
1664 // Place cursor after char at (logical) position pos - 1
1665 cursor_vpos = (bidi.level(ppos - 1) % 2 == 0)
1666 ? bidi.log2vis(ppos - 1) + 1 : bidi.log2vis(ppos - 1);
1668 // Place cursor before char at (logical) position ppos
1669 cursor_vpos = (bidi.level(ppos) % 2 == 0)
1670 ? bidi.log2vis(ppos) : bidi.log2vis(ppos) + 1;
1672 pos_type body_pos = par.beginOfBody();
1674 (body_pos > end || !par.isLineSeparator(body_pos - 1)))
1677 // check for possible inline completion in this row
1678 DocIterator const & inlineCompletionPos = bv_->inlineCompletionPos();
1679 pos_type inlineCompletionVPos = -1;
1680 if (inlineCompletionPos.inTexted()
1681 && inlineCompletionPos.text() == text_
1682 && inlineCompletionPos.pit() == pit
1683 && inlineCompletionPos.pos() - 1 >= row_pos
1684 && inlineCompletionPos.pos() - 1 < end) {
1685 // draw logically behind the previous character
1686 inlineCompletionVPos = bidi.log2vis(inlineCompletionPos.pos() - 1);
1689 // Use font span to speed things up, see below
1693 // If the last logical character is a separator, skip it, unless
1694 // it's in the last row of a paragraph; see skipped_sep_vpos declaration
1695 if (end > 0 && end < par.size() && par.isSeparator(end - 1))
1696 skipped_sep_vpos = bidi.log2vis(end - 1);
1698 if (lyxrc.paragraph_markers && text_->isRTL(par)) {
1699 ParagraphList const & pars_ = text_->paragraphs();
1700 if (size_type(pit + 1) < pars_.size()) {
1702 docstring const s = docstring(1, char_type(0x00B6));
1703 x += theFontMetrics(f).width(s);
1707 // Inline completion RTL special case row_pos == cursor_pos:
1708 // "__|b" => cursor_pos is right of __
1709 if (row_pos == inlineCompletionVPos && row_pos == cursor_vpos) {
1710 font = displayFont(pit, row_pos + 1);
1711 docstring const & completion = bv_->inlineCompletion();
1712 if (font.isRightToLeft() && completion.length() > 0)
1713 x += theFontMetrics(font.fontInfo()).width(completion);
1716 for (pos_type vpos = row_pos; vpos < cursor_vpos; ++vpos) {
1717 // Skip the separator which is at the logical end of the row
1718 if (vpos == skipped_sep_vpos)
1720 pos_type pos = bidi.vis2log(vpos);
1721 if (body_pos > 0 && pos == body_pos - 1) {
1722 FontMetrics const & labelfm = theFontMetrics(
1723 text_->labelFont(par));
1724 x += row.label_hfill + labelfm.width(par.layout().labelsep);
1725 if (par.isLineSeparator(body_pos - 1))
1726 x -= singleWidth(pit, body_pos - 1);
1729 // Use font span to speed things up, see above
1730 if (pos < font_span.first || pos > font_span.last) {
1731 font_span = par.fontSpan(pos);
1732 font = displayFont(pit, pos);
1735 x += pm.singleWidth(pos, font);
1737 // Inline completion RTL case:
1738 // "a__|b", __ of b => non-boundary a-pos is right of __
1739 if (vpos + 1 == inlineCompletionVPos
1740 && (vpos + 1 < cursor_vpos || !boundary_correction)) {
1741 font = displayFont(pit, vpos + 1);
1742 docstring const & completion = bv_->inlineCompletion();
1743 if (font.isRightToLeft() && completion.length() > 0)
1744 x += theFontMetrics(font.fontInfo()).width(completion);
1747 // Inline completion LTR case:
1748 // "b|__a", __ of b => non-boundary a-pos is in front of __
1749 if (vpos == inlineCompletionVPos
1750 && (vpos + 1 < cursor_vpos || boundary_correction)) {
1751 font = displayFont(pit, vpos);
1752 docstring const & completion = bv_->inlineCompletion();
1753 if (!font.isRightToLeft() && completion.length() > 0)
1754 x += theFontMetrics(font.fontInfo()).width(completion);
1757 if (par.isSeparator(pos) && pos >= body_pos)
1761 // see correction above
1762 if (boundary_correction) {
1763 if (isRTL(sl, boundary))
1764 x -= singleWidth(pit, ppos);
1766 x += singleWidth(pit, ppos);
1773 int TextMetrics::cursorY(CursorSlice const & sl, bool boundary) const
1775 //lyxerr << "TextMetrics::cursorY: boundary: " << boundary << endl;
1776 ParagraphMetrics const & pm = par_metrics_[sl.pit()];
1777 if (pm.rows().empty())
1781 h -= par_metrics_[0].rows()[0].ascent();
1782 for (pit_type pit = 0; pit < sl.pit(); ++pit) {
1783 h += par_metrics_[pit].height();
1786 if (pos && boundary)
1788 size_t const rend = pm.pos2row(pos);
1789 for (size_t rit = 0; rit != rend; ++rit)
1790 h += pm.rows()[rit].height();
1791 h += pm.rows()[rend].ascent();
1796 // the cursor set functions have a special mechanism. When they
1797 // realize you left an empty paragraph, they will delete it.
1799 bool TextMetrics::cursorHome(Cursor & cur)
1801 LASSERT(text_ == cur.text(), /**/);
1802 ParagraphMetrics const & pm = par_metrics_[cur.pit()];
1803 Row const & row = pm.getRow(cur.pos(),cur.boundary());
1804 return text_->setCursor(cur, cur.pit(), row.pos());
1808 bool TextMetrics::cursorEnd(Cursor & cur)
1810 LASSERT(text_ == cur.text(), /**/);
1811 // if not on the last row of the par, put the cursor before
1812 // the final space exept if I have a spanning inset or one string
1813 // is so long that we force a break.
1814 pos_type end = cur.textRow().endpos();
1816 // empty text, end-1 is no valid position
1818 bool boundary = false;
1819 if (end != cur.lastpos()) {
1820 if (!cur.paragraph().isLineSeparator(end-1)
1821 && !cur.paragraph().isNewline(end-1))
1826 return text_->setCursor(cur, cur.pit(), end, true, boundary);
1830 void TextMetrics::deleteLineForward(Cursor & cur)
1832 LASSERT(text_ == cur.text(), /**/);
1833 if (cur.lastpos() == 0) {
1834 // Paragraph is empty, so we just go forward
1835 text_->cursorForward(cur);
1838 cur.setSelection(true); // to avoid deletion
1841 // What is this test for ??? (JMarc)
1842 if (!cur.selection())
1843 text_->deleteWordForward(cur);
1845 cap::cutSelection(cur, true, false);
1846 cur.checkBufferStructure();
1851 bool TextMetrics::isLastRow(pit_type pit, Row const & row) const
1853 ParagraphList const & pars = text_->paragraphs();
1854 return row.endpos() >= pars[pit].size()
1855 && pit + 1 == pit_type(pars.size());
1859 bool TextMetrics::isFirstRow(pit_type pit, Row const & row) const
1861 return row.pos() == 0 && pit == 0;
1865 int TextMetrics::leftMargin(int max_width, pit_type pit) const
1867 LASSERT(pit >= 0, /**/);
1868 LASSERT(pit < int(text_->paragraphs().size()), /**/);
1869 return leftMargin(max_width, pit, text_->paragraphs()[pit].size());
1873 int TextMetrics::leftMargin(int max_width,
1874 pit_type const pit, pos_type const pos) const
1876 ParagraphList const & pars = text_->paragraphs();
1878 LASSERT(pit >= 0, /**/);
1879 LASSERT(pit < int(pars.size()), /**/);
1880 Paragraph const & par = pars[pit];
1881 LASSERT(pos >= 0, /**/);
1882 LASSERT(pos <= par.size(), /**/);
1883 Buffer const & buffer = bv_->buffer();
1884 //lyxerr << "TextMetrics::leftMargin: pit: " << pit << " pos: " << pos << endl;
1885 DocumentClass const & tclass = buffer.params().documentClass();
1886 Layout const & layout = par.layout();
1888 docstring parindent = layout.parindent;
1892 if (text_->isMainText())
1893 l_margin += bv_->leftMargin();
1895 l_margin += theFontMetrics(buffer.params().getFont()).signedWidth(
1896 tclass.leftmargin());
1898 if (par.getDepth() != 0) {
1899 // find the next level paragraph
1900 pit_type newpar = text_->outerHook(pit);
1901 if (newpar != pit_type(pars.size())) {
1902 if (pars[newpar].layout().isEnvironment()) {
1903 l_margin = leftMargin(max_width, newpar);
1905 if (tclass.isDefaultLayout(par.layout())
1906 || tclass.isPlainLayout(par.layout())) {
1907 if (pars[newpar].params().noindent())
1910 parindent = pars[newpar].layout().parindent;
1915 // This happens after sections in standard classes. The 1.3.x
1916 // code compared depths too, but it does not seem necessary
1918 if (tclass.isDefaultLayout(par.layout())
1919 && pit > 0 && pars[pit - 1].layout().nextnoindent)
1922 FontInfo const labelfont = text_->labelFont(par);
1923 FontMetrics const & labelfont_metrics = theFontMetrics(labelfont);
1925 switch (layout.margintype) {
1926 case MARGIN_DYNAMIC:
1927 if (!layout.leftmargin.empty()) {
1928 l_margin += theFontMetrics(buffer.params().getFont()).signedWidth(
1931 if (!par.labelString().empty()) {
1932 l_margin += labelfont_metrics.signedWidth(layout.labelindent);
1933 l_margin += labelfont_metrics.width(par.labelString());
1934 l_margin += labelfont_metrics.width(layout.labelsep);
1938 case MARGIN_MANUAL: {
1939 l_margin += labelfont_metrics.signedWidth(layout.labelindent);
1940 // The width of an empty par, even with manual label, should be 0
1941 if (!par.empty() && pos >= par.beginOfBody()) {
1942 if (!par.getLabelWidthString().empty()) {
1943 docstring labstr = par.getLabelWidthString();
1944 l_margin += labelfont_metrics.width(labstr);
1945 l_margin += labelfont_metrics.width(layout.labelsep);
1951 case MARGIN_STATIC: {
1952 l_margin += theFontMetrics(buffer.params().getFont()).
1953 signedWidth(layout.leftmargin) * 4 / (par.getDepth() + 4);
1957 case MARGIN_FIRST_DYNAMIC:
1958 if (layout.labeltype == LABEL_MANUAL) {
1959 // if we are at position 0, we are never in the body
1960 if (pos > 0 && pos >= par.beginOfBody())
1961 l_margin += labelfont_metrics.signedWidth(layout.leftmargin);
1963 l_margin += labelfont_metrics.signedWidth(layout.labelindent);
1965 // Special case to fix problems with
1967 || (layout.labeltype == LABEL_STATIC
1968 && layout.latextype == LATEX_ENVIRONMENT
1969 && !text_->isFirstInSequence(pit))) {
1970 l_margin += labelfont_metrics.signedWidth(layout.leftmargin);
1971 } else if (layout.labeltype != LABEL_TOP_ENVIRONMENT
1972 && layout.labeltype != LABEL_BIBLIO
1973 && layout.labeltype !=
1974 LABEL_CENTERED_TOP_ENVIRONMENT) {
1975 l_margin += labelfont_metrics.signedWidth(layout.labelindent);
1976 l_margin += labelfont_metrics.width(layout.labelsep);
1977 l_margin += labelfont_metrics.width(par.labelString());
1981 case MARGIN_RIGHT_ADDRESS_BOX: {
1983 // The left margin depends on the widest row in this paragraph.
1984 // This code is wrong because it depends on the rows, but at the
1985 // same time this function is used in redoParagraph to construct
1987 ParagraphMetrics const & pm = par_metrics_[pit];
1988 RowList::const_iterator rit = pm.rows().begin();
1989 RowList::const_iterator end = pm.rows().end();
1990 int minfill = max_width;
1991 for ( ; rit != end; ++rit)
1992 if (rit->fill() < minfill)
1993 minfill = rit->fill();
1994 l_margin += theFontMetrics(buffer.params().getFont()).signedWidth(layout.leftmargin);
1995 l_margin += minfill;
1997 // also wrong, but much shorter.
1998 l_margin += max_width / 2;
2003 if (!par.params().leftIndent().zero())
2004 l_margin += par.params().leftIndent().inPixels(max_width);
2008 if (par.params().align() == LYX_ALIGN_LAYOUT)
2009 align = layout.align;
2011 align = par.params().align();
2013 // set the correct parindent
2015 && (layout.labeltype == LABEL_NO_LABEL
2016 || layout.labeltype == LABEL_TOP_ENVIRONMENT
2017 || layout.labeltype == LABEL_CENTERED_TOP_ENVIRONMENT
2018 || (layout.labeltype == LABEL_STATIC
2019 && layout.latextype == LATEX_ENVIRONMENT
2020 && !text_->isFirstInSequence(pit)))
2021 && (align == LYX_ALIGN_BLOCK || align == LYX_ALIGN_LEFT)
2022 && !par.params().noindent()
2023 // in some insets, paragraphs are never indented
2024 && !text_->inset().neverIndent()
2025 // display style insets are always centered, omit indentation
2028 && par.getInset(pos)->display())
2029 && (!(tclass.isDefaultLayout(par.layout())
2030 || tclass.isPlainLayout(par.layout()))
2031 || buffer.params().paragraph_separation
2032 == BufferParams::ParagraphIndentSeparation)
2035 // use the parindent of the layout when the default indentation is
2036 // used otherwise use the indentation set in the document settings
2037 if (buffer.params().getIndentation().asLyXCommand() == "default")
2038 l_margin += theFontMetrics(
2039 buffer.params().getFont()).signedWidth(parindent);
2041 l_margin += buffer.params().getIndentation().inPixels(*bv_);
2048 int TextMetrics::singleWidth(pit_type pit, pos_type pos) const
2050 ParagraphMetrics const & pm = par_metrics_[pit];
2052 return pm.singleWidth(pos, displayFont(pit, pos));
2056 void TextMetrics::draw(PainterInfo & pi, int x, int y) const
2058 if (par_metrics_.empty())
2064 ParMetricsCache::iterator it = par_metrics_.begin();
2065 ParMetricsCache::iterator const pm_end = par_metrics_.end();
2066 y -= it->second.ascent();
2067 for (; it != pm_end; ++it) {
2068 ParagraphMetrics const & pmi = it->second;
2070 pit_type const pit = it->first;
2071 // Save the paragraph position in the cache.
2072 it->second.setPosition(y);
2073 drawParagraph(pi, pit, x, y);
2079 void TextMetrics::drawParagraph(PainterInfo & pi, pit_type pit, int x, int y) const
2081 BufferParams const & bparams = bv_->buffer().params();
2082 ParagraphMetrics const & pm = par_metrics_[pit];
2083 if (pm.rows().empty())
2087 bool const original_drawing_state = pi.pain.isDrawingEnabled();
2088 int const ww = bv_->workHeight();
2089 size_t const nrows = pm.rows().size();
2091 Cursor const & cur = bv_->cursor();
2092 DocIterator sel_beg = cur.selectionBegin();
2093 DocIterator sel_end = cur.selectionEnd();
2094 bool selection = cur.selection()
2095 // This is our text.
2096 && cur.text() == text_
2097 // if the anchor is outside, this is not our selection
2098 && cur.normalAnchor().text() == text_
2099 && pit >= sel_beg.pit() && pit <= sel_end.pit();
2101 // We store the begin and end pos of the selection relative to this par
2102 DocIterator sel_beg_par = cur.selectionBegin();
2103 DocIterator sel_end_par = cur.selectionEnd();
2105 // We care only about visible selection.
2107 if (pit != sel_beg.pit()) {
2108 sel_beg_par.pit() = pit;
2109 sel_beg_par.pos() = 0;
2111 if (pit != sel_end.pit()) {
2112 sel_end_par.pit() = pit;
2113 sel_end_par.pos() = sel_end_par.lastpos();
2117 for (size_t i = 0; i != nrows; ++i) {
2119 Row const & row = pm.rows()[i];
2123 bool const inside = (y + row.descent() >= 0
2124 && y - row.ascent() < ww);
2125 // It is not needed to draw on screen if we are not inside.
2126 pi.pain.setDrawingEnabled(inside && original_drawing_state);
2127 RowPainter rp(pi, *text_, pit, row, bidi, x, y);
2130 row.setSelectionAndMargins(sel_beg_par, sel_end_par);
2132 row.setSelection(-1, -1);
2134 // The row knows nothing about the paragraph, so we have to check
2135 // whether this row is the first or last and update the margins.
2136 if (row.selection()) {
2137 if (row.sel_beg == 0)
2138 row.begin_margin_sel = sel_beg.pit() < pit;
2139 if (row.sel_end == sel_end_par.lastpos())
2140 row.end_margin_sel = sel_end.pit() > pit;
2143 // Row signature; has row changed since last paint?
2144 row.setCrc(pm.computeRowSignature(row, bparams));
2145 bool row_has_changed = row.changed();
2147 // Take this opportunity to spellcheck the row contents.
2148 if (row_has_changed && lyxrc.spellcheck_continuously) {
2149 text_->getPar(pit).spellCheck();
2152 // Don't paint the row if a full repaint has not been requested
2153 // and if it has not changed.
2154 if (!pi.full_repaint && !row_has_changed) {
2155 // Paint only the insets if the text itself is
2157 rp.paintOnlyInsets();
2162 // Clear background of this row if paragraph background was not
2163 // already cleared because of a full repaint.
2164 if (!pi.full_repaint && row_has_changed) {
2165 pi.pain.fillRectangle(x, y - row.ascent(),
2166 width(), row.height(), pi.background_color);
2169 // Instrumentation for testing row cache (see also
2171 if (lyxerr.debugging(Debug::PAINTING) && inside
2172 && (row.selection() || pi.full_repaint || row_has_changed)) {
2173 string const foreword = text_->isMainText() ?
2174 "main text redraw " : "inset text redraw: ";
2175 LYXERR(Debug::PAINTING, foreword << "pit=" << pit << " row=" << i
2176 << " row_selection=" << row.selection()
2177 << " full_repaint=" << pi.full_repaint
2178 << " row_has_changed=" << row_has_changed);
2181 // Backup full_repaint status and force full repaint
2182 // for inner insets as the Row has been cleared out.
2183 bool tmp = pi.full_repaint;
2184 pi.full_repaint = true;
2186 rp.paintSelection();
2189 rp.paintChangeBar();
2190 bool const is_rtl = text_->isRTL(text_->getPar(pit));
2191 if (i == 0 && !is_rtl)
2193 if (i == nrows - 1 && is_rtl)
2196 if (i == nrows - 1 && !is_rtl)
2198 if (i == 0 && is_rtl)
2202 // Restore full_repaint status.
2203 pi.full_repaint = tmp;
2205 // Re-enable screen drawing for future use of the painter.
2206 pi.pain.setDrawingEnabled(original_drawing_state);
2208 //LYXERR(Debug::PAINTING, ".");
2212 void TextMetrics::completionPosAndDim(Cursor const & cur, int & x, int & y,
2213 Dimension & dim) const
2215 Cursor const & bvcur = cur.bv().cursor();
2217 // get word in front of cursor
2218 docstring word = text_->previousWord(bvcur.top());
2219 DocIterator wordStart = bvcur;
2220 wordStart.pos() -= word.length();
2222 // get position on screen of the word start and end
2223 //FIXME: Is it necessary to explicitly set this to false?
2224 wordStart.boundary(false);
2225 Point lxy = cur.bv().getPos(wordStart);
2226 Point rxy = cur.bv().getPos(bvcur);
2228 // calculate dimensions of the word
2229 dim = rowHeight(bvcur.pit(), wordStart.pos(), bvcur.pos(), false);
2230 dim.wid = abs(rxy.x_ - lxy.x_);
2232 // calculate position of word
2234 x = min(rxy.x_, lxy.x_);
2236 //lyxerr << "wid=" << dim.width() << " x=" << x << " y=" << y << " lxy.x_=" << lxy.x_ << " rxy.x_=" << rxy.x_ << " word=" << word << std::endl;
2237 //lyxerr << " wordstart=" << wordStart << " bvcur=" << bvcur << " cur=" << cur << std::endl;
2240 //int TextMetrics::pos2x(pit_type pit, pos_type pos) const
2242 // ParagraphMetrics const & pm = par_metrics_[pit];
2243 // Row const & r = pm.rows()[row];
2249 int defaultRowHeight()
2251 return int(theFontMetrics(sane_font).maxHeight() * 1.2);