Thuban/UI/__init__.py

# Copyright (c) 2001, 2002, 2003, 2005 by Intevation GmbH
# Authors:
# Bernhard Herzog <[email protected]>
#
# This program is free software under the GPL (>=v2)
# Read the file COPYING coming with Thuban for details.


_locale = None
def install_wx_translation():
    """Install the wx translation function in Thuban.

    For more information about translations in Thuban see the comment in
    Thuban/__init__.py
    """
    global _locale
    import Thuban
    if not Thuban.translation_function_installed():
        # Only import wx modules when we actually can install the
        # function so that the test suite can inhibit this
        import wx
        wx.Locale_AddCatalogLookupPathPrefix(Thuban._message_dir)
        _locale = wx.Locale()
        _locale.AddCatalog("thuban")

        # With a unicode build of wxPython, wxGetTranslation returns a
        # unicode object, so we have a wrapper that handles the case of
        # not using unicode as the internal string representation of
        # Thuban: If wxGetTranslation returns unicode and the internal
        # string representation of Thuban is not unicode, we convert the
        # translated string to the internal representation.  wxPython
        # will convert such strings back to unicode if necessary,
        # provided the internal encoding used is the one expected by
        # wxPython, which is taken care of below.
        def thuban_wx_translation(s):
            t = wx.GetTranslation(s)
            if isinstance(t, unicode) and Thuban._internal_encoding!="unicode":
                t = t.encode(Thuban._internal_encoding, "replace")
            return t

        Thuban.install_translation_function(thuban_wx_translation)

        # Reset the python locale. This makes sure that the LC_NUMERIC
        # seen by the python interpreter and by C modules is "C" instead
        # of the user's locale. Python code will still see the user's
        # locale where it matters. Without this, drawing the map doesn't
        # work for some reason
        import locale
        locale.setlocale(locale.LC_NUMERIC, "")

        # determine the internal encoding to use.
        # This is very tricky.  It's probably not optimal yet.
        encoding = None

        # If we have a wxPython >= 2.5.4.1, we use the
        # GetDefaultPyEncoding function to use exactly what wxPython
        # also uses when converting between unicode and byte-strings ...
        if hasattr(wx, "GetDefaultPyEncoding"):
            # AFAICT from the code this will always be a usable string,
            # although it could be "ascii".
            internal_encoding = wx.GetDefaultPyEncoding()

        # ... otherwise we use Python's getdefaultlocale.  This is what
        # GetDefaultPyEncoding also uses ...
        if encoding is None:
            encoding = locale.getdefaultlocale()[1]

        # ... finally, if we haven't figured it out yet, use latin 1 for
        # historical reasons.  Maybe ascii would be better.
        if encoding is None:
            encoding = "latin1"

        # set the encoding
        Thuban.set_internal_encoding(encoding)


install_wx_translation()
1	bh	2642	# Copyright (c) 2001, 2002, 2003, 2005 by Intevation GmbH
2	bh	6	# Authors:
3			# Bernhard Herzog <[email protected]>
4			#
5			# This program is free software under the GPL (>=v2)
6			# Read the file COPYING coming with Thuban for details.
7	bh	230
8	bh	1871
9			_locale = None
10			def install_wx_translation():
11			"""Install the wx translation function in Thuban.
12
13			For more information about translations in Thuban see the comment in
14			Thuban/__init__.py
15			"""
16			global _locale
17			import Thuban
18			if not Thuban.translation_function_installed():
19			# Only import wx modules when we actually can install the
20			# function so that the test suite can inhibit this
21	dpinte	2700	import wx
22			wx.Locale_AddCatalogLookupPathPrefix(Thuban._message_dir)
23			_locale = wx.Locale()
24	bh	1871	_locale.AddCatalog("thuban")
25
26	bh	2642	# With a unicode build of wxPython, wxGetTranslation returns a
27			# unicode object, so we have a wrapper that handles the case of
28			# not using unicode as the internal string representation of
29			# Thuban: If wxGetTranslation returns unicode and the internal
30			# string representation of Thuban is not unicode, we convert the
31			# translated string to the internal representation. wxPython
32			# will convert such strings back to unicode if necessary,
33			# provided the internal encoding used is the one expected by
34			# wxPython, which is taken care of below.
35			def thuban_wx_translation(s):
36	dpinte	2700	t = wx.GetTranslation(s)
37	bh	2642	if isinstance(t, unicode) and Thuban._internal_encoding!="unicode":
38			t = t.encode(Thuban._internal_encoding, "replace")
39			return t
40
41			Thuban.install_translation_function(thuban_wx_translation)
42
43	bh	1871	# Reset the python locale. This makes sure that the LC_NUMERIC
44			# seen by the python interpreter and by C modules is "C" instead
45			# of the user's locale. Python code will still see the user's
46			# locale where it matters. Without this, drawing the map doesn't
47			# work for some reason
48			import locale
49			locale.setlocale(locale.LC_NUMERIC, "")
50
51	bh	2642	# determine the internal encoding to use.
52			# This is very tricky. It's probably not optimal yet.
53			encoding = None
54
55			# If we have a wxPython >= 2.5.4.1, we use the
56			# GetDefaultPyEncoding function to use exactly what wxPython
57			# also uses when converting between unicode and byte-strings ...
58	dpinte	2700	if hasattr(wx, "GetDefaultPyEncoding"):
59	bh	2642	# AFAICT from the code this will always be a usable string,
60			# although it could be "ascii".
61	dpinte	2700	internal_encoding = wx.GetDefaultPyEncoding()
62	bh	2642
63			# ... otherwise we use Python's getdefaultlocale. This is what
64			# GetDefaultPyEncoding also uses ...
65			if encoding is None:
66			encoding = locale.getdefaultlocale()[1]
67
68			# ... finally, if we haven't figured it out yet, use latin 1 for
69			# historical reasons. Maybe ascii would be better.
70			if encoding is None:
71			encoding = "latin1"
72
73			# set the encoding
74			Thuban.set_internal_encoding(encoding)
75
76
77	bh	1871	install_wx_translation()
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