[Zope] PIL Question
J. Joy
kyroraz@yahoo.com
Sun, 12 May 2002 00:41:18 -0700 (PDT)
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Ross Lazarus <do_not_reply_to_this@bellatlantic.net> wrote: the img tag expects the server to deliver an existing image file from
somewhere. What you need to do is a little more complex (!). You COULD
write the image into a zope object (bad idea for lots of reasons - eg
zodb bloat) or to a localFS (better but still sucky) and deliver it from
there using an img tag. AFAIK, this is the ONLY way to embed your image
into a page with text and stuff.
I use PIL to make images and either email them or return them for the
browser to display or to save. Email is good if the generation takes a
long time obviously. To get the browser to display a returned image
binary, you must set the mime type in the http headers to image/jpeg
using or whatever and returning the binary image - the browser will
display it correctly.
If you want the image to be saveable, it gets worse. IE and netscape are
both broken if you try the file-disposition header, it doesn't work as
advertised. There's a work around which I use - namely setting the mime
type to application/octet-stream
>
> I'm trying to create an external method that will take variables that exist in a ZSQL call and will output an image
>
> based on that:
>
> import Image, ImageDraw, StringIO, os.path
>
> def PILtest():
> image = Image.new('RGB',[25,25])
> ## IMage Stuff Happens here!
> return image
>
> Where this would occur in a DTML-Method of:
>
>
>
>
>
> But I can't get PILtest to output the image itself. Save() doesn't seem to be of help directly. Anyone have any suggestions?
>
> Jason
--
Ross Lazarus
Visiting Associate Professor in Medicine,
Channing Labs, 181 Longwood Ave., Boston MA 02115, USA.
Fax:+617 525 0958, Office: +617 525 2730
---------------------------------
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LAUNCH - Your Yahoo! Music Experience
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<P>
<P> <B><I>Ross Lazarus <do_not_reply_to_this@bellatlantic.net></I></B> wrote:
<BLOCKQUOTE style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #1010ff 2px solid">the img tag expects the server to deliver an existing image file from <BR>somewhere. What you need to do is a little more complex (!). You COULD <BR>write the image into a zope object (bad idea for lots of reasons - eg <BR>zodb bloat) or to a localFS (better but still sucky) and deliver it from <BR>there using an img tag. AFAIK, this is the ONLY way to embed your image <BR>into a page with text and stuff.<BR><BR>I use PIL to make images and either email them or return them for the <BR>browser to display or to save. Email is good if the generation takes a <BR>long time obviously. To get the browser to display a returned image <BR>binary, you must set the mime type in the http headers to image/jpeg <BR>using or whatever and returning the binary image - the browser will <BR>display it correctly.<BR><BR>If you want the image to be saveable, it gets worse. IE and netscape are <BR>both broken if you try the file-disposition header, it doesn't work as <BR>advertised. There's a work around which I use - namely setting the mime <BR>type to application/octet-stream<BR><BR>> <BR>> I'm trying to create an external method that will take variables that exist in a ZSQL call and will output an image<BR>> <BR>> based on that: <BR>> <BR>> import Image, ImageDraw, StringIO, os.path<BR>> <BR>> def PILtest():<BR>> image = Image.new('RGB',[25,25])<BR>> ## IMage Stuff Happens here!<BR>> return image<BR>> <BR>> Where this would occur in a DTML-Method of:<BR>> <BR>> <DTML-IN SQL_COMMAND><BR>> <IMG src="http://us.f149.mail.yahoo.com/ym/PILtest"> <!--vars to be passed in with this--><BR>> </DTML-IN><BR>> <BR>> But I can't get PILtest to output the image itself. Save() doesn't seem to be of help directly. Anyone have any suggestions?<BR>> <BR>> Jason<BR><BR><BR>-- <BR>Ross Lazarus<BR>Visiting Associate Professor in Medicine,<BR>Channing Labs, 181 Longwood Ave., Boston MA 02115, USA.<BR>Fax:+617 525 0958, Office: +617 525 2730<BR></BLOCKQUOTE><p><br><hr size=1><b>Do You Yahoo!?</b><br>
<a href="http://rd.yahoo.com/welcome/*http://launch.yahoo.com">LAUNCH</a> - Your Yahoo! Music Experience
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