[CREATE] OpenRaster fallbacks (proposal/RFC)

[Cyrille Berger]

On Saturday 25 July 2009, Martin Renold wrote:
> The saving application dictates which fallback to use. Maybe the user
> wanted a different fallback. For example, the user might end up with a
> color-corrected layer but would rather want the original back.
That's implementation detail in the application, nothing in your proposal 
indicates that.

> Does anyone think this is a bad idea?  Anyone got a different idea?
I don't think that having a tag decided the use of the next tag is a good XML 
design (but then I am not an expert at XML...), I am not even sure we can 
enforce that in a schema.

But I think the <try> syntax is a bit complicated. It might get overkill in a 
cascade of fallbacks.

What I had in mind was something like that:

<text name="rendered text" >
 <content>
  some text
 </content>
 <projection src="data/text_fallback.png" />
</text>

or
<projection name="text" src="data/text_fallback.png" >
<text>
 <content>
   some text
 </content>
</projection>

It's worth to note that the projection is also usefull to just be quick to 
load, just imagine you have a stack of a lot of filters and only one layer, it 
could take a while to recompute everything, while with the projection, you can 
show that directly (and eventually reprocess in the background just to be 
sure).

> Is there some standard way to do this that I don't know about?
Good question :) I don't think ODF or SVG have a fallback mechanism.


-- 
Cyrille Berger


-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.freedesktop.org/archives/create/attachments/20090728/a8137099/attachment.htm