JFrame the same shape as an Image / Program running in background

Posted by Jan Weber on Stack Overflow See other posts from Stack Overflow or by Jan Weber
Published on 2012-11-27T16:34:53Z Indexed on 2012/11/27 23:08 UTC
Read the original article Hit count: 289

Filed under:

java

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image

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swing

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jframe

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shape

My question is simple, the solution surely not. I am looking for a way to shape a JFrame the same as an Image it will be displaying. By shape I mean the shape of the pixels that have an alpha != 0. I've already found a working example using a GeneralPath object, but it created ~110000 "nodes" for an Image of about 500*400, so starting the JFrame took more than 2 minutes, which is definitely not the desired effect, the startup should be in under 2 seconds.

Thanks for your time.

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