[Seaside] On Forms, PNGs, WAFiles, and ByteArrays
watchlala at hotmail.com
Mon Jan 11 00:21:24 UTC 2010
I wrote a simple form to upload images to the server, and I would like to create thumbnails for them automatically.
The way I ended up doing it is as follows:
| aForm newForm |
" add original file under name blahblahPng or whatever the image type is "
UGFileLibrary addFileNamed: title,'Png' contents: uploadedFile contents.
aForm := (PNGReadWriter createAFormFrom: uploadedFile contents) first.
" create thumbnail and save under name blahblahThumbPng "
newForm := aForm scaledToSize: (Point x: 50 y: 50).
" what I would have liked to do here is add the thumbnail to the file library "
" add item to art section "
UGArt addImage: (
title: title path: title,'Png') artist: self session user; imageForm: aForm; thumbForm: newForm; yourself
As you can see, I ended up using WAImageTag #form: rather than a url from the file library (or server directory, preferably). So what I would like to know are two things:
1) Forms are big? So throwing them around is cumbersome?
2) Is there a way to convert a Form back to a PNG without the whole mime thing?
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