Color Selector - Javascript

The follow code enables users to select colors by clicking on an image:

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<? php

$im = imagecreatefromjpeg("ColorWheel.jpg");

$x = $img1_x;

$y = $img1_y;

$clr1 = dechex(ImageColorAt($im, $x, $y));

php ?>
 
<html>

<form action = "pig.php">

<input type="image" name="img1" height="350" width="350" src="ColorWheel.jpg"></p>

</form>

</html>

Although it works, it is rather cumbersome in that the page must refresh to retrieve the selected color. Is there a way to replicate the "ImageColorAt" command using Java - perhaps initiated by a mouseover?

Any help/advice would be greatly appreciated - I have been trying to find a solution for a very long time. Thank you very much in advance

May 26 '07 #1

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1648

pbmods

5,821

Expert 4TB

Heya, Ragnar. Welcome to TSDN!

I'm moving your post to the JavaScript forum, where you'll get more relevant exposure.

May 27 '07 #2

acoder

16,027

Expert Mod 8TB

Is there a way to replicate the "ImageColorAt" command using Java - perhaps initiated by a mouseover?

Yes, this is possible using javascript.

Save the PHP that returns the colors in a separate file. Read up on AJAX by checking out the tutorial links in the Offsite Links thread.

You will need to pass the image and the current x and y co-ordinates. For the position of the mouse, see link.

May 28 '07 #3

Ragnar

Yes, this is possible using javascript.

Save the PHP that returns the colors in a separate file. Read up on AJAX by checking out the tutorial links in the Offsite Links thread.

You will need to pass the image and the current x and y co-ordinates. For the position of the mouse, see link.

Thank you very much ACODER. Give me some time to study the links you gave me and I'll tell you how it works out. I really appreciate it!

Jun 2 '07 #4

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