[Kde-finance-apps] Porting KLocale::formatMoney()/readMoney() to Qt5/KF5, best practise?

[Stephane MANKOWSKI]

Hi Friedrich,

Good initiative !

Concerning Skrooge:
1- Skrooge has been ported to Qt5/Kf5 but still need KDELibs4Support.
2- We don't use KLocale::readMoney() because amounts are entered like this:

2- We use KLocale::formatMoney because we can control the number of digits.
3- From KDELibs4Support, we use KCurrencyCode too to get information
about existing currencies. This is not available in Qt5.

I don't know activities to improve QLocale.

Regards.
Stéphane



Le 06/01/2016 08:12, Friedrich W. H. Kossebau a écrit :
> Hi developers of finance apps & Calligra Sheets & Calligra Plan,
>
> (please keep cross-posting to both ml for now)
>
> I (not only with my Calligra developer hat on) would like to collect 
> experiences and ideas for conversion of curreny values to and from 
> strings when using Qt5/KF5, especially when porting from kdelibs4's 
> KLocale.
>
>
> PROBLEM
>
> QLocale is rather limited (as of Qt 5.5):
> - no currency string parsing method
> - string formatting method toCurrencyString() does not allow
>   to control precision
>
> KLocale and its currency related methods seem the last blocker to get 
> rid of kdelibs4support in Calligra in the Qt5/KF5 port. Plan uses them 
> for handling the costs of resources, and Sheets for the currency 
> formatted cells. And both limitations are a blocker.
>
>
> APPROACHES
>
> Long term ideally QLocale gets support in its API for that. So we 
> developers of currency data handling software should organize and 
> draft an API.
>
> First and short term though, until some released & wide-spread Qt 
> version has the improved QLocale, I am looking for a solution 
> independent of QLocale.
> Most obvious might be to duplicate all currency things from KLocale, 
> which would also include duplicating the database with all currency 
> formatting data. This is what I would plan to do if there is no better 
> idea.
> Especially the database duplication is painful though, I would like to 
> avoid at least that if possible. 
>
>
> QUESTIONS
>
> How have developers of e.g. Skrooge & KMyMoney approached the issue of 
> conversion of currency values to/from strings?
>
> Do you know about any activities to improve QLocale here?
>
> Seems that Calligra apps Plan & Sheets are the only KDE apps using 
> KLocale::readMoney() ?
> https://lxr.kde.org/ident?v=stable-qt4&_i=readMoney&_remember=1
>
> But KLocale::formatMoney() might be used by KMyMoney, Skrooge, Kraft & 
> others (did not check though if not custom code):
> https://lxr.kde.org/ident?v=stable-qt4&_i=formatMoney&_remember=1
>
> Cheers
> Friedrich
> _______________________________________________
> Kde-finance-apps mailing list
> Kde-finance-apps at kde.org
> https://mail.kde.org/mailman/listinfo/kde-finance-apps

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