I'd suspect that maybe you're calling captureImg() immediately after setting the data/drawing the elements in your code? If so, it may not actually be rendered to the components graphics when the snapshot is taken. Just a guess, but it smells a bit like a timing problem to me (I've made too many of the same, myself). I'm afraid I can't remember offhand the component event when the screen is actually drawn, but a crude approach might be to call captureImg via callLater() and see if it works. (If I'm not completley wrong, that is). I confess I sometimes just add a temporary button to call my fn when I think I've made a similar kind of error (which normally confirms it).
-----Original Message----- From: [email protected] on behalf of netdeep Sent: Wed 12/03/2008 19:52 To: [email protected] Subject: [flexcoders] captureImage not drawing fresh images I'm having a problem creating a png snapshot of a chart I'm drawing. I can use the ImageSnapshot captureImage method but it only draws the elements added during the creation of the component and if I later add data from messaging or with actionscript (addChild), it only draws the original elements and not the new data. Here is my method: private function captureImg(comp:UIComponent):void { var imageSnap:ImageSnapshot = ImageSnapshot.captureImage(dynaChart); var imageByteArray:ByteArray = imageSnap.data as ByteArray; imgSave.saveImage(imageByteArray); } I also have this line in my init() method: ImageSnapshot.defaultEncoder = PNGEncoder; But I don't even know if I need that for sure. I then send it to a java servlet to write it to a file. As I said, it works but only writes the visual components added during initialization of the application. So I am just getting a blank chart. ______________________________________________________________________ This communication is from Primal Pictures Ltd., a company registered in England and Wales with registration No. 02622298 and registered office: 4th Floor, Tennyson House, 159-165 Great Portland Street, London, W1W 5PA, UK. VAT registration No. 648874577. This e-mail is confidential and may be privileged. It may be read, copied and used only by the intended recipient. If you have received it in error, please contact the sender immediately by return e-mail or by telephoning +44(0)20 7637 1010. Please then delete the e-mail and do not disclose its contents to any person. This email has been scanned for Primal Pictures by the MessageLabs Email Security System. ______________________________________________________________________
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