Re: Question about image caching and background color

[Richard Frith-Macdonald]

On Tuesday, November 27, 2001, at 05:18 PM, Adam Fedor wrote:

> Willem Rein Oudshoorn wrote:
>
> > (A) fix the method in NSImage by drawing the background
> > (B) Put the background in the cached image.
>
>
> I think the background is part of the cached image, but it should be 
> drawn when the image is cached. Is that not happening now or do I 
> misunderstand something?


Oops ... I intended to reply to the original email but forgot.

I thought the idea of the image cache was that you would cache an image 
with a particular
background to avoid needing to re-combine image and background later.  
If you are going to
redraw the background every time you draw the image anyway, I'm not sure 
what the point of
the caching is.

However, I never played with NeXT graphics, so I may be misunderstanding 
the image cache
thing.  When I worked on the GNUstep code, my primary purpose was to 
make the drawing
code fast enough t be usable ... that may have blinded me to other more 
important long
term considerations.