Initial work on a Karbon CDR import filter

[Thorsten Zachmann]

Hello Friedrich,

On Saturday, January 28, 2012 03:24:28 Friedrich W. H. Kossebau wrote:
> last weekend I started to try if I can do an import filter for the
> CorelDraw file format. I managed to get first parts of that format decoded
> and turned into some Karbon document data, see also my blog entry
> 	http://frinring.wordpress.com/2012/01/28/trying-to-read-files-from-the-
> past/

cool.

> 
> Some questions:
> Initially I tried to create directly a KarbonDocument object, not another
> SVG file. But then I found out that shapes like e.g. Rectangle and
> Ellipsis are only provided by factories from plugins, so I cannot create
> them directly from code, is that correct? Do I really have to instead
> create a SVG file as output?

The filters work mostly by converting one file format into a native file format 
of calligra. In case of Karbon native file formats are odg and svg. This has 
some benefits as it allows e.g. filter chaining. And that is the prefered way of 
implementing a filter. 
However it is also possible to do it differently but that means you need to 
link against the shapes code which is not nice.

> 
> Anybody would like to join the efforts? You are welcome! The CDR formats I
> will work on are the ones for version 4 and 5 (as these are the ones of the
> files I am interested in). So people with other versions will have to
> scratch their itch themselves :)
> 
> You can find the current state in the branch “CDRImport” in my clone of the
> Calligra repo here:
> http://quickgit.kde.org/?p=clones%2Fcalligra%2Fkossebau%2Fcalligra.git&a=su
> mmary
> 
> Cheers
> Friedrich
> 
> PS: Am subscribed to this ML, no need to cc: me
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