Color Selector

Collapse
X
Collapse
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • Ragnar
    New Member
    • May 2007
    • 2
    #1

    Color Selector

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

    [CODE=php]
    <? php
    $im = imagecreatefrom jpeg("ColorWhee l.jpg");
    $x = $img1_x;
    $y = $img1_y;
    $clr1 = dechex(ImageCol orAt($im, $x, $y));
    php ?>

    <html>
    <form action = "pig.php">
    <input type="image" name="img1" height="350" width="350" src="ColorWheel .jpg"></p>
    </form>
    </html>
    [/CODE]

    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 "ImageColor At" 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
    Tags: None
    • pbmods
      Recognized Expert Expert
      • Apr 2007
      • 5821
      #2
      Heya, Ragnar. Welcome to TSDN!

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

        Comment

        • acoder
          Recognized Expert MVP
          • Nov 2006
          • 16032
          #3
          Originally posted by Ragnar
          Is there a way to replicate the "ImageColor At" 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.

            Comment

            • Ragnar
              New Member
              • May 2007
              • 2
              #4
              Originally posted by acoder
              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!

                Comment

                Previous template Next
                Working...