[Drawkit] Scaling issues

[Uli Kusterer]

Am 24.05.2008 um 07:19 schrieb Graham Cox:
> small objects are going to disappear altogether, let alone be still  
> editable. These are the sorts of "usability issues" I was alluding  
> to when trying to explain why there is a minimum scale limit.


  You could also have a minimum size for showing knobs. So, if an  
object is being displayed smaller than, say, 8x8px at the current  
scale factor, you just don't show any knobs on it, and if it gets  
smaller than 2x2, you ignore it in hit testing, or so. That would be  
useful for drawings that have both insanely huge and small objects.

  Not sure complete exclusion from hit-testing is desirable, maybe  
that should even be smaller than one pixel before it gets ignored,  
otherwise users with exceptional mouse control might get really annoyed.

Cheers,
-- Uli Kusterer
"The Witnesses of TeachText are everywhere..."
http://www.zathras.de