On 1 Jan 2008, at 6:07 PM, Adam R. Maxwell wrote:

>
> On Jan 1, 2008, at 8:40 AM, Christiaan Hofman wrote:
>
>> Wouldn't it be better to draw the shadow in the icon, rather than in
>> drawRect? This would remove the needsShadow and draws the shadow
>> inside the icon.
>
> That seems wrong to me, since the shadow is cast on the view.
> Wouldn't it require changing the geometry of the icon drawing to
> account for the shadow offset and blur?  It's not clear what the blur
> value represents in points, so I'm not sure how to pad it, and I think
> the offset and blur would still have to be changed with scale, as
> well.

Yes, it could be a fixed fraction of the icon size. Also if the same  
icon is drawn at a different scale the shadow scales automatically.  
See also Skim's thumbnails. The padding for the shadow can easily be  
calculated from the blurradius and the offset.

> The Icon Services shadows are part of the icon bitmaps,
> unfortunately, so can't be disabled (and it's definitely impossible to
> match them).
>
> -- 
> adam

That's a reason I propose it, so it would be consistent, and really  
only when the icon is created do you know if it needs a shadow.

Christiaan


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