NSGradient implementation

[Fred Kiefer]

I Just added the gui part of an implementation of NSGradient. This is
based on code by Nikolaus Schaller and still requires some clean up. If
somebody helps me to remove all the remaining FIXMEs in the code I am
willing to define two backend methods for this class and implement them
at least for the cairo backend.

If on the other hand this results in as little feedback as the pattern
colour implementation, I will just forget about that class.

Cheers
Fred


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[Eric Wasylishen-2]

Hi Fred,

This is great to hear - I started two projects this summer which will  
really benefit from an NSGradient implementation.

The first is a little piece of code [1] which draws speech bubbles  
identical to the ones in this mockup:
http://jesseross.com/clients/etoile/ui/concepts/01/workspace_200.jpg
I use NSGradient for filling in the bubbles, so currently it only  
looks correct on OS X.

I also began working on drawing/painting framework tentatively called  
EtoilePaint [2], built on top of Quentin's EtoileUI, It's very  
unfinished, but I plan to resume working on it in January and create a  
nice hybrid bitmap/vector editor for Etoile. The NSColor pattern  
drawing feature will be useful here as well.

If I have time in the next few weeks I'll look at the FIXME's in  
NSGradient. Thanks for starting this!

Regards,
Eric

[1] http://svn.gna.org/viewcvs/etoile/trunk/Etoile/Frameworks/EtoileUI/Source/ETStyle.m?rev=5201&view=diff&r1=5201&r2=5200

[2] http://svn.gna.org/viewcvs/etoile/trunk/Etoile/Frameworks/EtoilePaint/

On 2009-10-21, at 1:15 AM, Fred Kiefer wrote:

> I Just added the gui part of an implementation of NSGradient. This is
> based on code by Nikolaus Schaller and still requires some clean up.  
> If
> somebody helps me to remove all the remaining FIXMEs in the code I am
> willing to define two backend methods for this class and implement  
> them
> at least for the cairo backend.
>
> If on the other hand this results in as little feedback as the pattern
> colour implementation, I will just forget about that class.
>
> Cheers
> Fred
>
>
> _______________________________________________
> Gnustep-dev mailing list
> Gnustep-dev@...
> http://lists.gnu.org/mailman/listinfo/gnustep-dev

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[Fred Kiefer]

Fred Kiefer schrieb:
> I Just added the gui part of an implementation of NSGradient. This is
> based on code by Nikolaus Schaller and still requires some clean up. If
> somebody helps me to remove all the remaining FIXMEs in the code I am
> willing to define two backend methods for this class and implement them
> at least for the cairo backend.
>
> If on the other hand this results in as little feedback as the pattern
> colour implementation, I will just forget about that class.
>

As there wasn't much feedback here I went ahead and tried to sort out
the maths myself and also wrote the simple cairo backend to do the
drawing. This sadly shows that my computation was only correct for the
first quadrant. Now it is back to the drawing board.

Fred


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