Ned,

Have a look at the following two methods:
	BitBlt>>installStrikeFont:foregroundColor:backgroundColor:
	BitBlt>>displayString:on:from:to:at:kern:
That's where most of the magic happens. You might experiment with the first
method for installing an appropriate alpha map and blending rules. I would
also recommend to take out the primitive code (from the second method)
because I'm uncertain if there are some optimizations down deep which might
interfere with your experiments.

Cheers,
  - Andreas

> -----Original Message-----
> From: Ned Konz [mailto:ned at bike-nomad.com]
> Sent: Sunday, April 01, 2001 1:12 PM
> To: squeak at cs.uiuc.edu
> Cc: recipient list not shown
> Subject: How can I get FormSetFonts (from TrueType fonts) to display
> anti-aliased?
> 
> 
> I've been trying to get TrueType fonts to display 
> anti-aliased. I've gotten 
> them as far as reading in good-looking Forms.
> 
> I've gotten the TrueType fonts to read in well using the 
> attached change set.
> 
> The attached FSFonts.gif is a 2X magnified picture of two 
> samples of the same 
> font (Verdana Bold Italic 42). The top (better-looking) 
> sample was made 
> directly from the glyphs Form in the FormSetFont using this 
> from a Workspace:
> 
> The attached FSFont1x.gif is a 1X version of the better 
> looking sample, 
> showing that it can look pretty good in practice.
> 
> SketchMorph withForm: (FormSetFont allInstances first glyphs 
> contentsOfArea: 
> (1810 at 0 extent: 100 at 53)) ) openInHand
> 
> The bottom sample is a TextMorph that uses the same font.
> 
> It appears that the problem lies with the drawing of the 
> characters of the 
> FormSetFont by the TextMorph (actually (I think) the NewParagraph).
> 
> Although the FormSetFont has an 8-bit (or deeper) Form with 
> grey-scale 
> antialiasing, it seems to be drawn 1-bit deep.
> 
> What I'd like is for the grey edges in the FormSetFont glyphs 
> form to be 
> rendered as alpha blending when drawn, so the FormSetFonts 
> could be used to 
> make good-looking headlines, etc. I suspect that this could 
> be done by using 
> a correct color map and BitBlt mode, but I'm not sure where to do it.
> 
> Can anyone point me in the right direction? I started looking 
> at how the 
> fonts were drawn, but I quickly ran into my lack of knowledge 
> about BitBlt 
> modes and the DisplayScanner.
> 
> Rather than spend too much more time on this, if anyone has a 
> suggestion or 
> quick fix, it would be appreciated!
> 
> We're really close to having TrueType fonts work pretty well 
> in Squeak!
> 
> -- 
> Ned Konz
> currently: Stanwood, WA
> email:     ned at bike-nomad.com
> homepage:  http://bike-nomad.com
>