Re: New feature in Calc: Stepped Lines graphs

On 21/02/13 15:43, Regina Henschel wrote:
> Michael Stahl schrieb:
> > On 20/02/13 22:11, Eric Seynaeve wrote:

> > > <style:style ...>
> > > <style:chart-properties chart:interpolation="gnm:step-end".../>
> > > </style:style>
> > >
> > > I guess the 'gnm:step-end' is a foreign element/attribute. Should I
> > > implement something similar for LO ? If yes, what to use instead of
> > > "gnm:". If no, can you point me in the right direction.
> >
> > if what you implement has the same semantics as what Gnumeric does (and
> > i think that's your goal) then it does make sense to use the same
> > foreign elements.
> >
> > you'd need to add a namespace declaration for the "gnm" prefix; look at
> > the xmlns:gnm="..." attribute that must be somewhere in the file (likely
> > on the root element).  you can add namespaces in
> > xmloff/inc/xmloff/xmlnmspe.hxx and SchXMLExport::SchXMLExport() in
> > xmloff/source/chart/SchXMLExport.cxx.
>
>
> I'm not sure whether the namespace it necessary for an attribute 
> _value_. Currently the attribute "chart:interpolation" allows only the 
> values none, cubic-spline and b-spline. Gnumeric does not introduce a 
> new attribute or element, but a new value for the attribute.

oops, i should have read more carefully - i completely missed that it's
a value that is "prefixed" :)

of course since Thorsten says it's already in ODF 1.3 it's best to just
use the values specified in that draft.