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Create new method TM::tokenizeParagraph
This contains large parts of breakRow, but creates a unique row for the paragraph. The parts taken or not in redoParagraph are annotated. The new method is not used yet.
This commit is contained in:
Jean-Marc Lasgouttes
parent
a558f78aa5
commit
f4d3702d4d
@ -868,21 +868,142 @@ private:
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} // namespace
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Row TextMetrics::tokenizeParagraph(pit_type const pit) const
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{
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Row row;
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row.pit(pit);
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Paragraph const & par = text_->getPar(pit);
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Buffer const & buf = text_->inset().buffer();
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BookmarksSection::BookmarkPosList bpl =
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theSession().bookmarks().bookmarksInPar(buf.fileName(), par.id());
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pos_type const end = par.size();
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pos_type const body_pos = par.beginOfBody();
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// check for possible inline completion
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DocIterator const & ic_it = bv_->inlineCompletionPos();
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pos_type ic_pos = -1;
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if (ic_it.inTexted() && ic_it.text() == text_ && ic_it.pit() == pit)
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ic_pos = ic_it.pos();
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// Now we iterate through until we reach the right margin
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// or the end of the par, then build a representation of the row.
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pos_type i = 0;
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FontIterator fi = FontIterator(*this, par, pit, 0);
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// The real stopping condition is a few lines below.
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while (true) {
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// Firstly, check whether there is a bookmark here.
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if (lyxrc.bookmarks_visibility == LyXRC::BMK_INLINE)
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for (auto const & bp_p : bpl)
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if (bp_p.second == i) {
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Font f = *fi;
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f.fontInfo().setColor(Color_bookmark);
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// ❶ U+2776 DINGBAT NEGATIVE CIRCLED DIGIT ONE
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char_type const ch = 0x2775 + bp_p.first;
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row.addVirtual(i, docstring(1, ch), f, Change());
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}
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// The stopping condition is here so that the display of a
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// bookmark can take place at paragraph start too.
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if (i >= end)
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break;
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char_type c = par.getChar(i);
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// The most special cases are handled first.
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if (par.isInset(i)) {
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Inset const * ins = par.getInset(i);
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Dimension dim = bv_->coordCache().insets().dim(ins);
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row.add(i, ins, dim, *fi, par.lookupChange(i));
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} else if (c == ' ' && i + 1 == body_pos) {
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// There is a space at i, but it should not be
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// added as a separator, because it is just
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// before body_pos. Instead, insert some spacing to
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// align text
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FontMetrics const & fm = theFontMetrics(text_->labelFont(par));
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// this is needed to make sure that the row width is correct
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row.finalizeLast();
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int const add = max(fm.width(par.layout().labelsep),
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labelEnd(pit) - row.width());
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row.addSpace(i, add, *fi, par.lookupChange(i));
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} else if (c == '\t')
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row.addSpace(i, theFontMetrics(*fi).width(from_ascii(" ")),
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*fi, par.lookupChange(i));
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else if (c == 0x2028 || c == 0x2029) {
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/**
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* U+2028 LINE SEPARATOR
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* U+2029 PARAGRAPH SEPARATOR
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* These are special unicode characters that break
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* lines/pragraphs. Not handling them lead to trouble wrt
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* Qt QTextLayout formatting. We add a visible character
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* on screen so that the user can see that something is
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* happening.
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*/
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row.finalizeLast();
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// ⤶ U+2936 ARROW POINTING DOWNWARDS THEN CURVING LEFTWARDS
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// ¶ U+00B6 PILCROW SIGN
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char_type const screen_char = (c == 0x2028) ? 0x2936 : 0x00B6;
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row.add(i, screen_char, *fi, par.lookupChange(i));
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} else
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row.add(i, c, *fi, par.lookupChange(i));
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// add inline completion width
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// draw logically behind the previous character
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if (ic_pos == i + 1 && !bv_->inlineCompletion().empty()) {
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docstring const comp = bv_->inlineCompletion();
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size_t const uniqueTo =bv_->inlineCompletionUniqueChars();
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Font f = *fi;
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if (uniqueTo > 0) {
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f.fontInfo().setColor(Color_inlinecompletion);
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row.addVirtual(i + 1, comp.substr(0, uniqueTo), f, Change());
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}
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f.fontInfo().setColor(Color_nonunique_inlinecompletion);
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row.addVirtual(i + 1, comp.substr(uniqueTo), f, Change());
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}
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++i;
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++fi;
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}
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row.finalizeLast();
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row.endpos(end);
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// End of paragraph marker. The logic here is almost the
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// same as in redoParagraph, remember keep them in sync.
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ParagraphList const & pars = text_->paragraphs();
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Change const & change = par.lookupChange(i);
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if ((lyxrc.paragraph_markers || change.changed())
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&& i == end && size_type(pit + 1) < pars.size()) {
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// add a virtual element for the end-of-paragraph
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// marker; it is shown on screen, but does not exist
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// in the paragraph.
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Font f(text_->layoutFont(pit));
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f.fontInfo().setColor(Color_paragraphmarker);
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f.setLanguage(par.getParLanguage(buf.params()));
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// ¶ U+00B6 PILCROW SIGN
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row.addVirtual(end, docstring(1, char_type(0x00B6)), f, change);
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}
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return row;
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}
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/** This is the function where the hard work is done. The code here is
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* very sensitive to small changes :) Note that part of the
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* intelligence is also in Row::shortenIfNeeded.
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*/
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bool TextMetrics::breakRow(Row & row, int const right_margin) const
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{
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LATTEST(row.empty());
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Paragraph const & par = text_->getPar(row.pit());
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Buffer const & buf = text_->inset().buffer();
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BookmarksSection::BookmarkPosList bpl =
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theSession().bookmarks().bookmarksInPar(buf.fileName(), par.id());
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LATTEST(row.empty());//
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Paragraph const & par = text_->getPar(row.pit());//
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Buffer const & buf = text_->inset().buffer();//
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BookmarksSection::BookmarkPosList bpl =//
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theSession().bookmarks().bookmarksInPar(buf.fileName(), par.id());//
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pos_type const end = par.size();
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pos_type const end = par.size();//
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pos_type const pos = row.pos();
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pos_type const body_pos = par.beginOfBody();
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pos_type const body_pos = par.beginOfBody();//
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bool const is_rtl = text_->isRTL(row.pit());
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bool need_new_row = false;
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@ -897,14 +1018,14 @@ bool TextMetrics::breakRow(Row & row, int const right_margin) const
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int const width = max_width_ - row.right_margin;
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// check for possible inline completion
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DocIterator const & ic_it = bv_->inlineCompletionPos();
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pos_type ic_pos = -1;
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if (ic_it.inTexted() && ic_it.text() == text_ && ic_it.pit() == row.pit())
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ic_pos = ic_it.pos();
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DocIterator const & ic_it = bv_->inlineCompletionPos();//
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pos_type ic_pos = -1;//
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if (ic_it.inTexted() && ic_it.text() == text_ && ic_it.pit() == row.pit())//
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ic_pos = ic_it.pos();//
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// Now we iterate through until we reach the right margin
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// or the end of the par, then build a representation of the row.
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pos_type i = pos;
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pos_type i = pos;//---------------------------------------------------vvv
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FontIterator fi = FontIterator(*this, par, row.pit(), pos);
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// The real stopping condition is a few lines below.
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while (true) {
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@ -921,7 +1042,7 @@ bool TextMetrics::breakRow(Row & row, int const right_margin) const
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// The stopping condition is here so that the display of a
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// bookmark can take place at paragraph start too.
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if (i >= end || (i != pos && row.width() > width))
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if (i >= end || (i != pos && row.width() > width))//^width
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break;
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char_type c = par.getChar(i);
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@ -976,8 +1097,9 @@ bool TextMetrics::breakRow(Row & row, int const right_margin) const
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}
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f.fontInfo().setColor(Color_nonunique_inlinecompletion);
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row.addVirtual(i + 1, comp.substr(uniqueTo), f, Change());
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}
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}//---------------------------------------------------------------^^^
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// FIXME: Handle when breaking the rows
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// Handle some situations that abruptly terminate the row
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// - Before an inset with BreakBefore
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// - After an inset with BreakAfter
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@ -1002,6 +1124,7 @@ bool TextMetrics::breakRow(Row & row, int const right_margin) const
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++i;
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++fi;
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}
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//--------------------------------------------------------------------vvv
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row.finalizeLast();
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row.endpos(i);
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@ -1010,7 +1133,7 @@ bool TextMetrics::breakRow(Row & row, int const right_margin) const
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ParagraphList const & pars = text_->paragraphs();
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Change const & change = par.lookupChange(i);
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if ((lyxrc.paragraph_markers || change.changed())
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&& !need_new_row
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&& !need_new_row // not this
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&& i == end && size_type(row.pit() + 1) < pars.size()) {
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// add a virtual element for the end-of-paragraph
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// marker; it is shown on screen, but does not exist
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@ -1025,6 +1148,8 @@ bool TextMetrics::breakRow(Row & row, int const right_margin) const
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// Is there a end-of-paragaph change?
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if (i == end && par.lookupChange(end).changed() && !need_new_row)
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row.needsChangeBar(true);
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//--------------------------------------------------------------------^^^
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// FIXME : nothing below this
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// if the row is too large, try to cut at last separator. In case
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// of success, reset indication that the row was broken abruptly.
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@ -151,6 +151,8 @@ private:
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/// FIXME??
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int labelEnd(pit_type const pit) const;
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Row tokenizeParagraph(pit_type pit) const;
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/// sets row.end to the pos value *after* which a row should break.
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/// for example, the pos after which isNewLine(pos) == true
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/// \return true when another row is required (after a newline)
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