[Kde-finance-apps] Re: Charts framework

[Cristian Oneț]

On Sat, May 21, 2011 at 11:49 PM, Guillaume DE BURE
<guillaume.debure at gmail.com> wrote:
> Le samedi 21 mai 2011 20:14:55, Stéphane MANKOWSKI a écrit :
>> Hi,
>>
>> In Skrooge, we are using our own component.
>> This is a class named skgtablewithgraph in the library libskgbasegui.so.
>> This class is able to draw graph for a given table of data.
>>
>> This class is published as a plug-in for QTDesigner, so you should be able to
>> test it easily (You just have to call seData).
>>
>> Personally, I am satisfied even if I am ready to change for a more powerful
>> component.
>>
>> Regards,
>> Stephane
>
> As a matter of fact, this is one of the thing that I always wanted to do in Skrooge, use an external charting library. The aim would be to draw nicer charts (Skrooge ones aren't especially sexy, even if they do the job : we are no artists :p).
>
> Since there doesn't seem to be a satisfying solution in Qt4, i totally agree with the idea of starting a common library. Maybe you guys could have a look at Stéphane's code, and tell us if you're interested in using it ? If yes, I suggest we use it as a basis for this new library.
>
> If not, we still have more options:
> * Start something from scratch
> * Use something not Qt4 based. jqplot could indeed be an option : after all, with all the things happening around QML & javascript in the KDE world, it would seem quite logical.
> * Expand on the currently not-so satisfying options: qwt ?

Since I have been going trough the KDChart code lately I will be the
one 'defending' it :) here.
1. I don't think we can come up with a homebrew charts lib that's
better then the one from KDCharts with the resources we have in
reasonable time (and the desire to do this seems to me like the NIH
[1] syndrome)
2. jqplot and other JS base chart libs (ExtJS) are nice but it means
using a HTML part and writing all the connection code between the
application and the HTML part, anyone up to this?
3. KDChart seems a nice lib and it's native C++ (I'm not into all that
JS hipe :) )

Regards,
Cristian

[1] http://en.wikipedia.org/wiki/Not_Invented_Here

> Guillaume
>>
>>
>> Le samedi 21 mai 2011 18:45:52, Thomas Baumgart a écrit :
>> > Hi,
>> >
>> > on Saturday 21 May 2011 17:52:03 Alvaro Soliverez wrote:
>> > > Hello,
>> > > as you may recall, in KMyMoney we use KDChart for drawing our report
>> > > charts. For some time now, they've promised to do a release, but they
>> > > still haven't fulfilled that promise and the source is still behind
>> > > closed doors. We only get access to tarballs via FTP.
>> > >
>> > > I'd very much like to use the same as KOffice and Calligra, but this
>> > > situation is not ideal and I don't feel comfortable with it.
>> > >
>> > > Since all our applications need charts, I think we could find an
>> > > alternative that fits all of us. An alternative that is more open and
>> > > accessible than the one we have now.
>> >
>> > +1
>> >
>> > I pulled the source from Calligra (which is still the KDChart stuff) but
>> > newer than ours (except we have a fix that they don't - so what).
>> >
>> > I am all for using something generic and stable among all the finance apps.
>> > What are you using in Skrooge? Are you happy with it?  On the KMyMoney list
>> > I pointed to http://www.jqplot.com/ which looks like a nice alternative
>> > (but I have not tried it).
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