Re: TeX-like H&J demo

[Damon Chaplin <damon karuna uklinux net>]

On Sun, 2003-04-27 at 04:07, Noah Levitt wrote:
> So you know that someone has looked at it. :)
> 
> I like it. Any chance we can at least get some ultra-simple
> justification in pango 1.4?

I think it would be fairly easy to stretch the spaces in the existing
layout code, so you'd get simple justification, without hyphenation
or support for kashidas.

I could have a go at this if people want it.


> I'm sure you know this, but I noticed that it seems to
> calculate the width of something incorrectly for Arabic (or
> maybe for anything other than Latin).

Yes, I think it is a bug in pango_glyph_string_get_logical_widths().
I could be wrong though.

As I understand it, the sum of the log_widths (of all the chars) should
equal the sum of the PangoGlyphString geometry widths (of all the
glyphs) for an item. But that isn't happening:
 
Item logical widths: 9216 4608 4608     Total: 18432
Item glyph widths  : 9216 9216 9216     Total: 27648

Item logical widths: 9216 9216 4608 4608     Total: 27648
Item glyph widths  : 9216 9216 9216 9216     Total: 36864

My code uses the logical widths a lot more than PangoLayout does, which
is why the problem is more noticeable.


There's also a bug in my unicode stuff that is causing crashes in the
RTL demo page. I'm looking into that now.

Damon