Adding more more calendars ( Specially Jalali )

[Amin Aghabeiki]

Hi John

Thank you for guide and notice,

Regards,
Amin Aghabeiki



On Fri, Oct 21, 2016 at 9:59 PM, John Ralls <jralls at ceridwen.us> wrote:

>
> > On Oct 20, 2016, at 8:10 PM, Amin Aghabeiki <amin.aghabeiki at gmail.com>
> wrote:
> >
> > Hi All
> >
> > First I should say sorry for my bad English .
> >
> > I plan to add new calendar to GnuCash , and want use others experience on
> > it.
> >
> > my Idea is :
> >
> > use Gregorian calendar for store and retrieve data in / out of storing
> > place
> > and add a new layer to just display the other ( Jalalian ) Calender in
> View
> > .
> >
> > after some research on code , I find Date Cell struct object on code that
> > use to manage date data , and think to work on it and extend it to
> support
> > more calendar.
> >
> > so my question is :
> > 1- is this idea good for do it.
> > 2- if this idea look good , is my way correct ?  ( Extending Date Cell )
> >
>
> Amin,
>
> There's nothing wrong with your idea, but the devil is in the details as
> always. In addition to the DateCell for display in the register you'll need
> to hunt down all of the other places that use dates so that the user gets
> the right date input and display everywhere.  You'll also need to provide a
> way of enabling the alternate calendar. There are two options: Use Locale
> (noting that Microsoft Windows does localization differently from Unix and
> you'll need to accommodate both) or have an explicit setting in
> Preferences>General.
>
> One other thing to note: We currently have two register modules: One in
> src/register and the other spread around src/gnome, src/gnome-utils,
> src/core-utils, and src/app-utils. The one in src/register is the one that
> users see, the other being a modernization attempt that fizzled a bit. We
> call the second one Register2 and we try to keep it up to date in the hopes
> that someone will finish debugging it. Most of the code is copy-pasted from
> src/register, but the cell renderers might be different as they'd have to
> work with current Gtk2 GtkTreeView rather than the very old Gnumeric tree
> views in src/register.
>
> Christian Stimming added jalali<->gregorian conversion code
> (src/core-utils/gnc-jalali.c) a few years ago, but never hooked it up to
> anything. You might check the implementation to make sure that he didn't
> make any errors.
>
>
> Regards,
> John Ralls