[Matplotlib-devel] Help for testing unicode support on the MacOS backend

[Antony Lee]

Works with PySide Py2/Py3 (on Linux).

2016-01-05 6:11 GMT-08:00 Jens Nielsen <jenshnielsen at gmail.com>:

> We should be careful about the PySide QT4 backend and unicode. See
> https://github.com/matplotlib/matplotlib/pull/5690
>
> best
> Jens
>
> On Tue, 5 Jan 2016 at 14:06 Michael Droettboom <mdroettboom at continuum.io>
> wrote:
>
>> The Mac OSX backend seems to work just fine.
>>
>> That docstring comment goes back to 2008, and the OSS GUI frameworks and
>> Python 3 etc. have made great strides with Unicode support since then.  We
>> should probably just remove it along with your proposed change.
>>
>> Mike
>>
>> On Mon, Jan 4, 2016 at 6:48 PM, Antony Lee <antony.lee at berkeley.edu>
>> wrote:
>>
>>> Hi all,
>>>
>>> As part of my rewrite of the Formatter classes (#5787), I am planning to
>>> switch to always use `fix_minus` in the statusbar text (i.e., use a
>>> typographically correct unicode "MINUS SIGN" rather than a dash for
>>> negative numbers).
>>>
>>> The original docstring on the topic was
>>>
>>>     Some classes may want to replace a hyphen for minus with the
>>>     proper unicode symbol (U+2212) for typographical correctness.
>>>     The default is to not replace it.
>>>
>>>     Note, if you use this method, e.g., in :meth:`format_data` or
>>>     call, you probably don't want to use it for
>>>     :meth:`format_data_short` since the toolbar uses this for
>>>     interactive coord reporting and I doubt we can expect GUIs
>>>     across platforms will handle the unicode correctly.  So for
>>>     now the classes that override :meth:`fix_minus` should have an
>>>     explicit :meth:`format_data_short` method
>>>
>>> I have tried the Tk, Qt4, Qt5 (Python2/3), Gtk (Python2) and Gtk3
>>> (Python3) backends on Linux, as well as Tk and Qt4 (Python2) on Windows and
>>> they all handle unicode fine.  Can someone try the MacOS backend for me?
>>> You basically need to patch ScalarFormatter.format_data_short (in
>>> ticker.py) to wrap the returned values in `self.fix_minus`
>>>
>>>     def format_data_short(self, value):
>>>         """return a short formatted string representation of a number"""
>>>         if self._useLocale:
>>>             return self.fix_minus(locale.format_string('%-12g',
>>> (value,)))
>>>         else:
>>>             return self.fix_minus('%-12g' % value)
>>>
>>> plot e.g. `plot([-1, 1])`, and check that the statusbar displays
>>> negative x values properly (with a minus sign that's actually much more
>>> readable IMO).
>>>
>>> Thanks,
>>>
>>> Antony
>>>
>>> _______________________________________________
>>> Matplotlib-devel mailing list
>>> Matplotlib-devel at python.org
>>> https://mail.python.org/mailman/listinfo/matplotlib-devel
>>>
>>>
>>
>>
>> --
>> Michael Droettboom
>> Continuum Analytics
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>> Matplotlib-devel at python.org
>> https://mail.python.org/mailman/listinfo/matplotlib-devel
>>
>
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