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Full Colour Spectrum Color Picker For Flex
   

Flex comes with it's own built-in ColorPicker component, which looks like this:

A collapsed and expanded ColorPicker control

It works well, but you have to click on it little picker square (see above, left) to open the picker itself and, once open, you're then limited to the web-safe colour palette. 

The other day I wanted a picker that was always on show and allowed any colour to be chosen. After a search I found this solution which builds a spectrum of colours on the fly (worth a look just to see what is possible with Flex). The trouble with it, for me, was the lack a greyscale and being unable to choose white as a colour. Not having time to figure out how to modify it to meet these two requirements I took a different tact. Instead of generating the spectrum on the fly I embedded the following image:

spectrum

This is based on this image, which I modified in Fireworks to add the grey-scale bar and the white fade at the top.

I then embedded this Image in the Flex component and came up with this (working demo):

Either scripts and active content are not permitted to run or Adobe Flash Player version 10.0.0 or greater is not installed.

Get Adobe Flash Player

Click on the colour swatch to change the app's background colour. You can download a demo Flex app here with the self-contained component (based loosely on the one linked to above). Enjoy.

Click here to post a response



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http://www.codestore.net/store.nsf/unid/BLOG-20110414-0347
Apr 14, 2011
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Recent Blog Posts
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