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Re: Pixel-based display functions

From: Lars Ingebrigtsen
Subject: Re: Pixel-based display functions
Date: Wed, 11 Feb 2015 16:31:11 +1100
User-agent: Gnus/5.130012 (Ma Gnus v0.12) Emacs/25.0.50 (gnu/linux)

Eli Zaretskii <address@hidden> writes:

> Well, you insert those lines into the buffer yourself, right?  Can you
> find the longest line while you are at it, and insert only it?
> AFAICS, that's the only way of making window-text-pixel-size do its
> job faster: by making the region FROM..TO it needs to traverse
> smaller.

Well, I don't know how long the line is (in pixels) in the first
place.  Only calling `window-text-pixel-size' will tell me, right?

There's once special case I do know the width of the <td> element, and
that's when the only element in the <td> is another <table>.  I already
know the width of that table, to I wouldn't really have to recompute the
width again.

It's not an unusual case, but I don't think there would be much of a
speed up in total, though.

(domestic pets only, the antidote for overdose, milk.)
  bloggy blog http://lars.ingebrigtsen.no/

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