Hi Nick,
That sounds handy. There's already quite a bit of record level
code in HSSF, it's just the high level code to create / modify /
delete them that we lack, plus probably a few of the records. If
someone was to have time to work on it, I'd suggest shuffling
quite a bit of this stuff out of hssf, and into something like
dgrf (Dreadful GRaphing Format), then expand it there for hssf+hslf
We already have some chart records org.apache.poi.hssf.record; I
would suggest keeping them in a sub-package, for example, in
org.apache.poi.hssf.record.graph.
I guess it depends if they can be used as-is for powerpoint or not.
If not, a subpackage sounds good. If they can, then I'd say they
should be moved out, as we have done with the ddf records stuff
A good start would be implementing all of the graph records. Then
it should be possible to assemble/disassemble charts and, I hope,
create new ones.
Sounds good. Shame I can't get work to fund it, as we don't use
charts :(
I've just glanced at the documentation. Maybe with low level support
someone could hack around with existing charts in only a couple of
weeks. But to be useful in generating charts there would certainly
need to be a higher level api to hide the dreadful details. There
would also need to be XML serialization. What information do we have
on "OGRAPH" in OOXML?
I'll check into sponsorship, and how soon ... ;-)
It all depends on what is on top of the heap ... and this has been in
the heap ... for years and years.
Anyone else interested?
Regards,
Dave
Nick
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