[CPS-devel] Imagegallery

[Michael Schulz]

Thanks,

if I understand it right, your suggestion means:

- create CPSImageWithThumbnailField(CPSImageField), with a
computeDependantFields method, that takes the original imagefield
data, uses PIL to create the thumbnail and write the new image to the
thumbnail field.

- change my Photo schema, to one CPSImageWithThumbnailField and one
CPSImageField(?) or two CPSImageWithThumbnailFields

- what layout should i choose? since i still want to be able to use it
TTW: change my layout, so that instead of using a photo widget I use a
normal image widget and on each change of the image, the thumbnail
field is updated thru the computedependantfields method?

- If i then use the remote controller or createFile it is sufficient
to provide the image file in the doc_def, because again,
computedependantFields would thumbnail...

Did I get that right? Thanks, Michael


2007/4/13, Georges Racinet <gracinet at nuxeo.com>:
>
> On Apr 13, 2007, at 12:16 PM, Michael Schulz wrote:
>
> > Hi,
> >
> > I am looking for a solution to the behaviour mentioned in this ticket
> > about the imagegallery type: http://svn.nuxeo.org/trac/pub/ticket/693
> >
> > I thought a quick solution to this could be to create a new
> > CPSDocumentType ("Photo"), that uses the photo widget, which can store
> > the original image plus a generated thumbnail. The resizing and
> > keeping original image data is done in ExtendedWidget and BasicWidget
> > modules.
> >
> > After adding this Photo type to the allowed_content_types of the
> > imagegallery, it is working for images that are uploaded thru the
> > normal forms. But creating this type thru a zipfile upload is not
> > working: the object is created, but the resizing and keeping of
> > original data is not performed. Presumably because this functionality
> > comes from the widget "machinery", that is not invoked through the
> > process when uploading a zipfile (createFile.py).
> >
> > What would be the correct manner to create these objects by scripts?
> > The same problem arises when trying to create this type through the
> > remote controller.
> >
> > TIA, Michael
>
> Hi
>
> I think you'd want to use the computeDependantFields (sic) method of
> fields. So instead of
> subclassing the Image widget, you could subclass the CPS ImageField,
> and have it take care of the
> thumbnail. This should catch all these use cases. For example, I've
> done this to read ID3 tags from MP3 files.
> In mainstream CPS, this is used to apply transforms, like converting
> pdf to text for indexing.
>
>
> >
> > --
> > -----------------------------------------------------------
> > Michael Schulz
> > mschulz at webgis.de
> >
> > in medias res
> > Gesellschaft für Informationstechnologie mbH
> >
> > In den Weihermatten 66
> > 79108 Freiburg
> >
> > Tel  +49 (0)761 556959-5
> > Fax +49 (0)761 556959-6
> >
> > http://www.webgis.de / http://www.zopecms.de
> > -----------------------------------------------------------
> > _______________________________________________
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> >
>
> ---------
> Georges Racinet,   Nuxeo SAS
> Open Source Enterprise Content Management (ECM)
> Web: http://www.nuxeo.com/ and http://www.nuxeo.org/ - Tel: +33 1 40
> 33 79 87
>
>
>
> _______________________________________________
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>


-- 
-----------------------------------------------------------
Michael Schulz
mschulz at webgis.de

in medias res
Gesellschaft für Informationstechnologie mbH

In den Weihermatten 66
79108 Freiburg

Tel  +49 (0)761 556959-5
Fax +49 (0)761 556959-6

http://www.webgis.de / http://www.zopecms.de
-----------------------------------------------------------