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Color Wheel Picker

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Submitted on: 2/27/2002 11:38:27 PM
By: Lewis Moten  
Level: Advanced
User Rating: By 3 Users
Compatibility:VbScript (browser/client side)

Users have accessed this article 1308 times.
 

(About the author)
 
     I was working on a scriptlet to allow users to choose a color. A color wheel is displayed with an assortment of colors - most of witch are web-safe. Clicking on a color causes it to be outlined and raise an event that a color was chosen. This object mimics one of the color-picker forms found in Microsoft Office 2000. This scriplet does not yet raise events or expose properties. The basics, however are available for you to be amazed.

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Terms of Agreement:   
By using this article, you agree to the following terms...   
1) You may use this article in your own programs (and may compile it into a program and distribute it in compiled format for langauges that allow it) freely and with no charge.   
2) You MAY NOT redistribute this article (for example to a web site) without written permission from the original author. Failure to do so is a violation of copyright laws.   
3) You may link to this article from another website, but ONLY if it is not wrapped in a frame. 
4) You will abide by any additional copyright restrictions which the author may have placed in the article or article's description.

The color wheel began with the idea that anything in a regualar windows application can be done through a web page. For this experiment, I choose the color picker control from Microsoft Office 2000.

Originally, I was going to load all 144 images as seperate asp pages that would return dynamic GIF images. However, the resources required to process each individual file each time the page was loaded did not strike my mind as something I would want to have happen.

I began some creative thinking and headed for the filters with style sheets. I was in the hopes that I could apply a filter so that I could fade certain colors of a single image. For example - if I had a black & white photograph of myself, I would like to change it to a brown or tan color to make it look old.

The search went on, but the closest thing I could find was a filter to fade the transparency of the image. I started to find information about direct-x filters introduced in internet explorer 4. (internet explorer continues to amaze me at all of the technologies that it exposes).

One particular sample that interested me was a sample of a radar detector with a plane flying around. It wasn't the rotating light that caught my attention - but the ambient light of the background. The original image was black and white, but it appeared as a very dark green with black circles.

So off i went and found that I could add ambient lights to all of the images. From there, everything else came natural. Take a look and see what it is all about.

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Terms of Agreement:   
By using this article, you agree to the following terms...   
1) You may use this article in your own programs (and may compile it into a program and distribute it in compiled format for langauges that allow it) freely and with no charge.   
2) You MAY NOT redistribute this article (for example to a web site) without written permission from the original author. Failure to do so is a violation of copyright laws.   
3) You may link to this article from another website, but ONLY if it is not wrapped in a frame. 
4) You will abide by any additional copyright restrictions which the author may have placed in the article or article's description.


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Other User Comments
2/28/2002 4:02:27 PM:Greg Ratner
All I can say is: AWESOME!
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