David Flatley

Here’s a little recipe for scaling an image from a center registration point. Flash always allowed you to bounce the registration point wherever you wanted, but Flex expects it on the top left. If you want to resize an image from the center evenly, with a horizontal slider for example, you’ll like this one.

First the MXML. This layout is simple, it basically just has the small script with a function to accept a SilderEvent when the user changes the value of the horizontal slider. This function then uses the static functions (calcX() and calcY()) in the ImageResizer class to calculate the new math and tell your image how to resize properly from the center.

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