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Re: How to create a control just as RGB Sphere and Alpha bar
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Re: How to create a control just as RGB Sphere and Alpha bar


  • Subject: Re: How to create a control just as RGB Sphere and Alpha bar
  • From: Florian Soenens <email@hidden>
  • Date: Fri, 25 Sep 2009 12:02:07 +0200

http://www.google.com/search?client=safari&rls=en-us&q=cocoa+get+pixel+rgb+value&ie=UTF-8&oe=UTF-8

Florian.

On 25 Sep 2009, at 09:12, Symadept wrote:

Hi Graham,
I tried to display the RGB spectrum as an image in the view. How can I pick
particular pixel color from that image. Does it make sense?


-Mustafa

On Fri, Sep 25, 2009 at 2:29 PM, Graham Cox <email@hidden> wrote:

tsk, tsk - lazy, lazy.

http://mattgemmell.com/2008/12/08/what-have-you-tried

http://catb.org/~esr/faqs/smart-questions.html


C'mon, get real. No-one's going to write your code for you. If you can't
find a free class somewhere, subclass NSView yourself. A location <--> RGB
mapping is pretty easy.


--Graham






On 25/09/2009, at 4:20 PM, Symadept wrote:

Hi Graham,

Yes. But do you have any other ways to handle this.

I want something like this



I could be able to pick the color from the spectrum band and could change
the Alpha (This I can manage to some extent, Immediately I need to handle
the picking colour from the spectrum.)


Regards
Mustafa



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  • Follow-Ups:
    • Re: How to create a control just as RGB Sphere and Alpha bar
      • From: Jens Alfke <email@hidden>
References: 
 >How to create a control just as RGB Sphere and Alpha bar (From: Symadept <email@hidden>)
 >Re: How to create a control just as RGB Sphere and Alpha bar (From: Graham Cox <email@hidden>)
 >Re: How to create a control just as RGB Sphere and Alpha bar (From: Symadept <email@hidden>)
 >Re: How to create a control just as RGB Sphere and Alpha bar (From: Graham Cox <email@hidden>)
 >Re: How to create a control just as RGB Sphere and Alpha bar (From: Symadept <email@hidden>)

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