*
Just add it to Qt, if it is useful. I don't think
we should accept obsolete, fictional, or similar calendars, but if your
proposal of Chinese Lunar calendar actually has uses, we should simply have it
in QtCore.
*
*
Agree! Chinese lunar calendar is widely used in mainland China and
all major calendar application like Google Calendar and Outlook both
support set Chinese lunar calendar as alternate calendar system to
make the date display under the main calendar, so I guess it could
be great to get Chinese calendar support directly from QtCore :)
*
*
Actually the reason I wish there is a public API to add custom calendar
system is because implement a Chinese calendar system from scratch seems
not be a very simple work to do, if the goal is do a quick implementation
for my need, then I could just use other libraries which already support
Chinese calendar system and use that to implement the Qt APIs. ICU
already supports Chinese calendar and I am using ICU currently. It
could be good if we can push such support into Qt (and KDE) but obviously
we'll need a clean implementation than a random dirty-but-works one.
*
*
The question there is where we'd get the l10n data in the first place. Is it
in ICU?
*
*
Sadly the localized day name isn't in ICU. I found there is a proposal
in CLDR [1]
but seems not get approved/implemented yet. ICU do support get the Cyclic
year name, though.
*
*
To get a chinese calendar instance from ICU for testing, we can use the
following
code:
*
*
Locale locale("en_US", 0, 0, "calendar=chinese");
UErrorCode errorCode = U_ZERO_ERROR;
m_cal = Calendar::createInstance(TimeZone::createTimeZone("GMT+8:00"),
locale, errorCode);
*
*
Then `SimpleDateFormat` can be used to get localized strings, "U" can be
used
**
for Cyclic year name for example [2], but there are no patterns for
getting a localized
**
day name at this moment.
*
*
Since the initial goal is adding Alternate Calendar display support for
KDE, I
did a test repo which uses ICU4C for Chinese calendar system support to
create
the KDE applet [3]. The code may be useful to do some quick tests.
*
**
*
[1]:
http://cldr.unicode.org/development/development-process/design-proposals/chinese-calendar-support
[2]:
https://unicode-org.github.io/icu-docs/apidoc/released/icu4c/classicu_1_1SimpleDateFormat.html#details
[3]: https://github.com/BLumia/pineapple-calendar
*
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