Re: Text Problem 0.90RC1

[Lars Clausen <lrclause cs uiuc edu>]

On Wed, 15 May 2002, Robert Young wrote:
>> Lars Clausen wrote:
>> On Tue, 14 May 2002, Robert Young wrote:
>> > Just a quick problem I found. Place a piece of text on a 
>> diagram. Change
>> > it's font. Move it about - it's bounds are not correct.
>> > Compiled with no options i.e. Freetype OFF.
>> 
>> What fonts are you changing from and to, at what size and zoom?
> 
> New Diagram. New Text. At this point it is using Courier, size 0.8, and
> 100% zoom. Change font to AvantGarde-Book and when the text is moved
> about it leaves stuff behind - hence me thinking its a bounding box
> problem.  The bounding box, however, is OK at 141% and 200% zoom...

Yeah, that sounds like what I see.

>> I am tempted to for all small sizes just render a larger size and then
>> scale in Dia, no matter the uglyness.  For now, there is a 
>> wiggle factor of
>> 1.1, which leaves some extra room in some cases.  We may need 
>> to increase
>> it a bit.
> 
> I took a look at lib/font.c and see what you mean. I did, however, notice
> that the problem is only with this particular font face that it occurs.
> Mind you, that is just for size 0.8, zoom 100%. Also, there was a message
> appearing in the console when using AvantGarde-Book about this font
> (-schumacher-clean-medium-r-normal ...) not supporting all characters in
> my locale (en_AU) - then complains that it is missing character set
> ISO8859-1.  I'd probably blame it on this. Your fudge factor of 1.1 works
> pretty well (>90% of the time).

Maybe it should be 1.15 or 1.2 to cover everything.

> I guess the next question is : what needs to be done to get Freetype
> working well enough to replace GDK fonts?? Or is Freetype justa stepping
> stone to Pango? Should I spend my lunch time playing with Freetype
> enabled, instead?

Freetype, alas, has the same problem, both with and without hinting.  It is
just a stepping stone, really.  But I don't know if Pango does it any better.

-Lars

-- 
Lars Clausen (http://shasta.cs.uiuc.edu/~lrclause)| Hårdgrim of Numenor
"I do not agree with a word that you say, but I   |----------------------------
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