Re: [Tapestry-developer] charting utilities?

[hl...@attbi.com]

Little perplexed by your comment; if the Image required a string path then it 
would be broken.  The fact that it makes use of the IAsset abstraction which 
is *exactly* the separation between Image component and source of image data 
that's cool.  What's needed isn't a new Image, but new implementations of 
IAsset.

--
hlship@attbi.com

http://tapestry.sf.net
> Eric,
> 
> I'd be happy to contribute Pixory's Image component to the Tapestry 
> community. I hate to keep harping on this subject, but tapestry.Image is a 
> weak spot in the otherwise excellent design of Tapestry. The problem is that 
> it's coupled to the Asset system, but the approach can and should be more 
> generic.
> 
> The more general approach is the one that WebObjects takes. The Image 
> component simply renders images, regardless of the *source* of that Image. I 
> have mimiced this approach in the Pixory image component. At the end of the 
> day, all you need to render an image is a Stream to provide the bytes (and 
> optionally the mime/type and maybe width/height). This decouples the Image 
> rendering from the Image provider, so you can easily plug in whatever 
> charting library you like.
> 
> I'll mail a copy of the Pixory Image stuff to anyone who wants a copy. Also, 
> if the community would like this contributed to the contrib package, just 
> let me know how to proceed.
> 
> regards,
> 
> Joseph Panico
> joe_panico@hotmail.com
> 
> 
> 
> 
> >From: "Schneider, Eric" <es...@tiaa-cref.org>
> >To: tapestry-developer@lists.sourceforge.net
> >Subject: [Tapestry-developer] charting utilities?
> >Date: Tue, 21 Jan 2003 14:59:55 -0500
> >
> >Hi,
> >
> >I was wondering if anyone has a good suggestion for a Java Charting package
> >that works well with tapestry.
> >
> >I've come across a package called JChart (http://jcharts.sourceforge.net)
> >which seems to be straightforward.  The only thing concerning is how well 
> >it
> >will mix with tapestry.  All of the examples are servlets that use this
> >encoder class which basically sets the content type on the http response 
> >and
> >encodes a BufferedImage.  The response is nothing except the chart.  I'd
> >actually need the chart to be rendered within a tapestry page, along with
> >other html.
> >
> >Anyone have any suggestions on how to approach this?
> >
> >Thanks in advance,
> >Eric
> >
> >
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