[Zope] (no subject)

[Shane O'Sullivan]

This is a multi-part message in MIME format.

------=_NextPart_000_0012_01C162E9.7113A760
Content-Type: text/plain;
	charset="iso-8859-1"
Content-Transfer-Encoding: quoted-printable
X-MIME-Autoconverted: from 8bit to quoted-printable by lxgate1.engitech.ie id PAA27560

Luis,
      theres a problem with the thumbnails.py file in the zope book. It h=
as
to do with handling images over a certain size.
I've attached a correct version. You also have to have the PIL correctly
installed.

Regards,
Shane



----- Original Message -----
From: Luis Mart=EDn Arga=F1araz <skalivur@netscape.net>
To: <zope@zope.org>
Sent: Thursday, November 01, 2001 2:42 PM
Subject: [Zope] (no subject)


> hello.
> I=B4m a new Zope user and I have a problem whit the external methods. I=
=B4m
reading Zope Book (Chapter 8:"ScriptingZope.html") and I can=B4t add that=
 the
external method "makeThumbnail", proposed there. It looks like zope doesn=
=B4t
recognize the variable "self".
> Any suggestion?
> Thanks
>
>
>
> __________________________________________________________________
> Your favorite stores, helpful shopping tools and great gift ideas.
Experience the convenience of buying online with Shop@Netscape!
http://shopnow.netscape.com/
>
> Get your own FREE, personal Netscape Mail account today at
http://webmail.netscape.com/
>
>
> _______________________________________________
> Zope maillist  -  Zope@zope.org
> http://lists.zope.org/mailman/listinfo/zope
> **   No cross posts or HTML encoding!  **
> (Related lists -
>  http://lists.zope.org/mailman/listinfo/zope-announce
>  http://lists.zope.org/mailman/listinfo/zope-dev )

------=_NextPart_000_0012_01C162E9.7113A760
Content-Type: application/octet-stream;
	name="Thumbnail.py"
Content-Disposition: attachment;
	filename="Thumbnail.py"
Content-Transfer-Encoding: 7bit

def makeThumbnail(self, original_id, size=128):
          """
          Makes a thumbnail image given an image Id when called on a Zope
          folder.

          The thumbnail is a Zope image object that is a small JPG
          representation of the original image. The thumbnail has a
          'original_id' property set to the id of the full size image
          object.
          """

          from PIL import Image
          from cStringIO import StringIO
          import os.path

          # create a thumbnail image file
          original_image=getattr(self, original_id)
          original_file=StringIO(str(original_image.data)) # bug fix here
          image=Image.open(original_file)
          image=image.convert('RGB')
          image.thumbnail((size,size))
          thumbnail_file=StringIO()
          image.save(thumbnail_file, "JPEG") 
          thumbnail_file.seek(0)

          # create an id for the thumbnail
          path, ext=os.path.splitext(original_id)
          thumbnail_id=path + '.thumb.jpg'

          # if there's and old thumbnail, delete it
          if thumbnail_id in self.objectIds():
              self.manage_delObjects(thumbnail_id)

          # create the Zope image object
          self.manage_addProduct['OFSP'].manage_addImage(thumbnail_id,
                                                         thumbnail_file,
                                                         'thumbnail image')
          thumbnail_image=getattr(self, thumbnail_id)

          # set the 'originial_id' property
          thumbnail_image.manage_addProperty('original_id',
                                                original_id,
                                                     'string')

------=_NextPart_000_0012_01C162E9.7113A760--