Abdelrazak Younes wrote:
Hello,
It took a great deal of step by step debugging but my supposition was
right, redoParagraph() is the culprit!
The reason why the slowdown (and the csrss.exe) appears only in the line
following a big formula is because of this code in rowpainter.C, line 1008:
// Cache one paragraph above and one below
// Note MV: this cannot be suppressed even for singlepar.
// Try viewing the User Guide Mobius figure
The funny thing is that trying to view this figure in UserGuide.lyx
crashes LyX even though this code is here...
if (vi.p1 > 0) {
text.redoParagraph(bv, vi.p1 - 1); // <- HERE!!!
bv.coordCache().parPos()[&text][vi.p1 - 1] =
Point(0, vi.y1 - text.getPar(vi.p1 - 1).descent());
}
So this is _entirely_ about fontmetrics and paragraph breaking in math.
I'm good! :-)
Abdel.
