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Fix some display bugs related to end of paragraph markers

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There are two regressions that are fixed here:

 * empty rows at the end of a paragraph (think after newline at end of
   paragraph or empty line in Verbatim) do not have an end-of-par
   marker. This is fixed by removing the early return in breakRow and
   letting the whole function be executed. This requires to relax an
   assertion in Paragraph::fontSpan. It makes sense here to query
   position at the end of the paragraph.

 * a newline at the end of a paragraph will be followed by and
   end-of-par marker. This is fixed by skipping the end-of-par marker
   when a new row has been requested.
This commit is contained in:
Jean-Marc Lasgouttes 2016-03-25 10:16:33 +01:00
parent ecd7dee5ea
commit ba7e2113f3
2 changed files with 10 additions and 7 deletions
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5
src/Paragraph.cpp
View File

@ -1731,7 +1731,10 @@ Font const & Paragraph::getFontSettings(BufferParams const & bparams,
FontSpan Paragraph::fontSpan(pos_type pos) const
{
LBUFERR(pos < size());
LBUFERR(pos <= size());
if (pos == size())
return FontSpan(pos, pos);
pos_type start = 0;
FontList::const_iterator cit = d->fontlist_.begin();

12
src/TextMetrics.cpp
View File

@ -791,6 +791,7 @@ void TextMetrics::breakRow(Row & row, int const right_margin, pit_type const pit
pos_type const pos = row.pos();
pos_type const body_pos = par.beginOfBody();
bool const is_rtl = text_->isRTL(par);
bool need_new_row = false;
row.clear();
row.left_margin = leftMargin(max_width_, pit, pos);
@ -803,11 +804,6 @@ void TextMetrics::breakRow(Row & row, int const right_margin, pit_type const pit
// the width available for the row.
int const width = max_width_ - row.right_margin;
if (pos >= end) {
row.endpos(end);
return;
}
ParagraphList const & pars = text_->paragraphs();
#if 0
@ -829,6 +825,9 @@ void TextMetrics::breakRow(Row & row, int const right_margin, pit_type const pit
pos_type i = pos;
FontIterator fi = FontIterator(*this, par, pit, pos);
do {
// this can happen for an empty row after a newline
if (i >= end)
break;
char_type c = par.getChar(i);
// The most special cases are handled first.
if (par.isInset(i)) {
@ -887,6 +886,7 @@ void TextMetrics::breakRow(Row & row, int const right_margin, pit_type const pit
|| (!row.empty() && row.back().inset
&& row.back().inset->display())) {
row.right_boundary(true);
need_new_row = par.isNewline(i);
++i;
break;
}
@ -898,7 +898,7 @@ void TextMetrics::breakRow(Row & row, int const right_margin, pit_type const pit
row.endpos(i);
// End of paragraph marker
if (lyxrc.paragraph_markers
if (lyxrc.paragraph_markers && !need_new_row
&& i == end && size_type(pit + 1) < pars.size()) {
// add a virtual element for the end-of-paragraph
// marker; it is shown on screen, but does not exist