anne/lyx_mirror
1
0
Fork 0
mirror of https://git.lyx.org/repos/lyx.git synced 2024-09-19 22:40:26 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

In the no-draw phase, do not cache the positions of not visible insets

Browse Source 
This can make a big difference for a very large branch that contains
lots of equations.

This is complementary to the previous patch, since instead of reducing
the number of calls to updatePosCache, we make it faster.

In the same test of scrolling with mouse wheel through the
branch-test.lyx document, one finds a 23% improvement for
BufferView::updateMetrics().

Part of bug #12297.
This commit is contained in:
Jean-Marc Lasgouttes 2023-07-24 17:53:16 +02:00
parent d19ade9a61
commit 7f85024f80
1 changed files with 8 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
src/TextMetrics.cpp
View File

@ -2000,6 +2000,7 @@ void TextMetrics::drawParagraph(PainterInfo & pi, pit_type const pit, int const
if (pm.rows().empty())
return;
size_t const nrows = pm.rows().size();
int const wh = bv_->workHeight();
// Remember left and right margin for drawing math numbers
Changer changeleft = changeVar(pi.leftx, x + leftMargin(pit));
Changer changeright = changeVar(pi.rightx, x + width() - rightMargin(pit));
@ -2014,15 +2015,17 @@ void TextMetrics::drawParagraph(PainterInfo & pi, pit_type const pit, int const
if (i)
y += row.ascent();
RowPainter rp(pi, *text_, row, row_x, y);
rp.paintOnlyInsets();
// It is not needed to draw on screen if we are not inside
bool const inside = (y + row.descent() >= 0 && y - row.ascent() < wh);
if (inside) {
RowPainter rp(pi, *text_, row, row_x, y);
rp.paintOnlyInsets();
}
y += row.descent();
}
return;
}
int const ww = bv_->workHeight();
Cursor const & cur = bv_->cursor();
DocIterator sel_beg = cur.selectionBegin();
DocIterator sel_end = cur.selectionEnd();
@ -2065,7 +2068,7 @@ void TextMetrics::drawParagraph(PainterInfo & pi, pit_type const pit, int const
// It is not needed to draw on screen if we are not inside.
bool const inside = (y + row.descent() >= 0
&& y - row.ascent() < ww);
&& y - row.ascent() < wh);
if (!inside) {
// Inset positions have already been set in nodraw stage.
y += row.descent();