wxPython/demo/I18N.py

   1 #Boa:FramePanel:LanguageSelectPanel
   2 import os, sys
   3 import wx
   4 from wx.lib import langlistctrl
   5 from Main import opj
   6
   7
   8 # Normally you would just set _ to be a reference to the
   9 # wx.GetTranslation function, and then wrap all you literal strings in
  10 # _() function calls.  Then everytime you use one of your literals, it
  11 # would first pass through the translation function and try to load a
  12 # translated version of the string from the current message catalogs.
  13 # For this example, since we are changinb language on the fly, and
  14 # since we are only translating the label for one widget, we'll not do
  15 # it the automatic way and we'll be more explicit.  See the setup in
  16 # __init__() and the translation done in updateLanguage() below.
  17
  18 _ = wx.GetTranslation
  19
  20 exampleStrings = [
  21     'the quick brown fox jumps over the lazy dog',  # demo string
  22     'Tip of the Day',                               # wx built in translation
  23     'Warning',                                      # wx built in translation
  24 ]
  25
  26
  27 [wxID_LANGUAGESELECTPANEL, wxID_LANGUAGESELECTPANELENGLISHBASECH,
  28  wxID_LANGUAGESELECTPANELLANGCTRLCONTAINER,
  29  wxID_LANGUAGESELECTPANELLANGFILTERRB, wxID_LANGUAGESELECTPANELSTATICLINE1,
  30  wxID_LANGUAGESELECTPANELSTATICTEXT1, wxID_LANGUAGESELECTPANELSTATICTEXT2,
  31  wxID_LANGUAGESELECTPANELSTATICTEXT3, wxID_LANGUAGESELECTPANELTRANSLATEDST,
  32 ] = [wx.NewId() for _init_ctrls in range(9)]
  33
  34 class LanguageSelectPanel(wx.Panel):
  35     def _init_coll_boxSizer3_Items(self, parent):
  36         # generated method, don't edit
  37
  38         parent.AddWindow(self.langCtrlContainer, 1, border=0, flag=wx.GROW)
  39         parent.AddSpacer(wx.Size(8, 8), border=0, flag=0)
  40         parent.AddWindow(self.langFilterRB, 0, border=0, flag=0)
  41
  42     def _init_coll_flexGridSizer1_Growables(self, parent):
  43         # generated method, don't edit
  44
  45         parent.AddGrowableRow(1)
  46         parent.AddGrowableCol(0)
  47
  48     def _init_coll_boxSizer1_Items(self, parent):
  49         # generated method, don't edit
  50
  51         parent.AddWindow(self.staticText1, 0, border=8, flag=wx.ALL)
  52         parent.AddSizer(self.boxSizer3, 1, border=8, flag=wx.ALL | wx.GROW)
  53         parent.AddSizer(self.boxSizer2, 0, border=8, flag=wx.GROW | wx.ALL)
  54
  55     def _init_coll_boxSizer2_Items(self, parent):
  56         # generated method, don't edit
  57
  58         parent.AddWindow(self.staticText2, 0, border=8, flag=wx.ALL)
  59         parent.AddWindow(self.englishBaseCh, 0, border=8, flag=wx.GROW | wx.ALL)
  60         parent.AddWindow(self.staticLine1, 0, border=8, flag=wx.GROW | wx.ALL)
  61         parent.AddWindow(self.staticText3, 0, border=8, flag=wx.ALL)
  62         parent.AddWindow(self.translatedST, 0, border=8, flag=wx.GROW | wx.ALL)
  63
  64     def _init_sizers(self):
  65         # generated method, don't edit
  66         self.boxSizer1 = wx.BoxSizer(orient=wx.VERTICAL)
  67
  68         self.flexGridSizer1 = wx.FlexGridSizer(cols=2, hgap=8, rows=0, vgap=8)
  69
  70         self.boxSizer3 = wx.BoxSizer(orient=wx.HORIZONTAL)
  71
  72         self.boxSizer2 = wx.BoxSizer(orient=wx.VERTICAL)
  73
  74         self._init_coll_boxSizer1_Items(self.boxSizer1)
  75         self._init_coll_flexGridSizer1_Growables(self.flexGridSizer1)
  76         self._init_coll_boxSizer3_Items(self.boxSizer3)
  77         self._init_coll_boxSizer2_Items(self.boxSizer2)
  78
  79         self.SetSizer(self.boxSizer1)
  80
  81     def _init_ctrls(self, prnt):
  82         # generated method, don't edit
  83         wx.Panel.__init__(self, id=wxID_LANGUAGESELECTPANEL,
  84               name='LanguageSelectPanel', parent=prnt,
  85               style=wx.RESIZE_BORDER | wx.DEFAULT_DIALOG_STYLE)
  86
  87         self.staticText1 = wx.StaticText(id=wxID_LANGUAGESELECTPANELSTATICTEXT1,
  88               label='Choose a language that will be used for example translation.',
  89               name='staticText1', parent=self, style=0)
  90
  91         self.langCtrlContainer = wx.Panel(id=wxID_LANGUAGESELECTPANELLANGCTRLCONTAINER,
  92               name='langCtrlContainer', parent=self, style=wx.TAB_TRAVERSAL)
  93         self.langCtrlContainer.SetBackgroundColour(wx.Colour(255, 255, 255))
  94         self.langCtrlContainer.Bind(wx.EVT_SIZE, self.OnLangCtrlContainerSize)
  95
  96         self.langFilterRB = wx.RadioBox(choices=['Translated example languages',
  97               'Available languages on your system', 'All languages'],
  98               id=wxID_LANGUAGESELECTPANELLANGFILTERRB, label='Filter',
  99               majorDimension=1, name='langFilterRB', parent=self,
 100               style=wx.RA_SPECIFY_COLS)
 101         self.langFilterRB.Bind(wx.EVT_RADIOBOX, self.OnLangFilterRBRadiobox,
 102               id=wxID_LANGUAGESELECTPANELLANGFILTERRB)
 103
 104         self.staticText2 = wx.StaticText(id=wxID_LANGUAGESELECTPANELSTATICTEXT2,
 105               label='English Text:', name='staticText2', parent=self,
 106               style=0)
 107
 108         self.staticText3 = wx.StaticText(id=wxID_LANGUAGESELECTPANELSTATICTEXT3,
 109               label='Translated Text:', name='staticText3', parent=self,
 110               style=0)
 111
 112         self.englishBaseCh = wx.Choice(choices=self.choices,
 113               id=wxID_LANGUAGESELECTPANELENGLISHBASECH, name='englishBaseCh',
 114               parent=self, style=0)
 115         self.englishBaseCh.Bind(wx.EVT_CHOICE, self.OnLangSelectAndTranslate,
 116               id=wxID_LANGUAGESELECTPANELENGLISHBASECH)
 117
 118         self.staticLine1 = wx.StaticLine(id=wxID_LANGUAGESELECTPANELSTATICLINE1,
 119               name='staticLine1', parent=self, style=0)
 120
 121         self.translatedST = wx.StaticText(id=wxID_LANGUAGESELECTPANELTRANSLATEDST,
 122               label='', name='translatedST', parent=self, style=0)
 123
 124         self._init_sizers()
 125
 126     def __init__(self, parent, log):
 127         self.choices = []
 128         self.choices = exampleStrings
 129
 130         self._init_ctrls(parent)
 131
 132         self.log = log
 133
 134         lang = wx.LANGUAGE_DEFAULT
 135         filter = 'demo'
 136         langs = (wx.LANGUAGE_AFRIKAANS, wx.LANGUAGE_ENGLISH, wx.LANGUAGE_DEFAULT,
 137                  wx.LANGUAGE_SPANISH, wx.LANGUAGE_GERMAN, wx.LANGUAGE_ITALIAN,
 138                  wx.LANGUAGE_FRENCH)
 139
 140
 141         # usually you would define wx.Locale in your wx.App.OnInit class.
 142         # for the demo we just define it in this module
 143         self.locale = None
 144         wx.Locale.AddCatalogLookupPathPrefix(opj('data/locale'))
 145         self.updateLanguage(wx.LANGUAGE_DEFAULT)
 146
 147
 148         self.filterMap = {'demo': langlistctrl.LC_ONLY,
 149                           'available': langlistctrl.LC_AVAILABLE,
 150                           'all': langlistctrl.LC_ALL}
 151
 152         self.filterIdxMap = {0: 'demo',
 153                              1: 'available',
 154                              2: 'all'}
 155         self.langs = langs
 156         self.langCtrl = langlistctrl.LanguageListCtrl(self.langCtrlContainer, -1,
 157               filter=self.filterMap[filter], only=langs, select=lang)
 158
 159         self.langCtrl.Bind(wx.EVT_LIST_ITEM_SELECTED, self.OnLangSelectAndTranslate)
 160         self.langCtrl.Bind(wx.EVT_LIST_ITEM_DESELECTED, self.OnClearTranslatedText)
 161
 162         self.OnLangCtrlContainerSize()
 163
 164         self.englishBaseCh.Select(0)
 165         self.OnLangSelectAndTranslate()
 166
 167
 168     def updateLanguage(self, lang):
 169         # Make *sure* any existing locale is deleted before the new
 170         # one is created.  The old C++ object needs to be deleted
 171         # before the new one is created, and if we just assign a new
 172         # instance to the old Python variable, the old C++ locale will
 173         # not be destroyed soon enough, likely causing a crash.
 174         if self.locale:
 175             assert sys.getrefcount(self.locale) <= 2
 176             del self.locale
 177
 178         # create a locale object for this language
 179         self.locale = wx.Locale(lang)
 180         self.locale.AddCatalog('wxpydemo')
 181
 182     def translateExample(self):
 183         self.translatedST.SetLabel(_(self.englishBaseCh.GetStringSelection()))
 184
 185     def OnLangCtrlContainerSize(self, event=None):
 186         if event: event.Skip()
 187         self.langCtrl.SetSize(self.langCtrlContainer.GetSize())
 188
 189     def OnLangFilterRBRadiobox(self, event):
 190         self.langCtrl.SetUpFilter(
 191             self.filterMap[self.filterIdxMap[self.langFilterRB.GetSelection()]],
 192             self.langs)
 193
 194     def OnLangSelectAndTranslate(self, event=None):
 195         lang = self.langCtrl.GetLanguage()
 196
 197         if lang is not None:
 198             # set to the selected language
 199             self.updateLanguage(lang)
 200
 201             self.translateExample()
 202
 203             # set back to default
 204             self.updateLanguage(wx.LANGUAGE_DEFAULT)
 205
 206     def OnClearTranslatedText(self, event):
 207         self.translatedST.SetLabel('')
 208
 209
 210 def runTest(frame, nb, log):
 211     win = LanguageSelectPanel(nb, log)
 212     return win
 213
 214 #-------------------------------------------------------------------------------
 215
 216 overview = """<html><body>
 217 <h2>Internationalization (I18N)</h2>
 218 <p>
 219 This demo demonstrates how to setup and use the wx.Locale object to translate text.
 220 <p>
 221 It also shows the langlistctrl.LanguageListCtrl that can be used to display
 222 languages with their associated countries flags, e.g. for setting the language
 223 in your application.
 224
 225 </body></html>
 226 """
 227
 228 if __name__ == '__main__':
 229     import sys,os
 230     import run
 231     run.main(['', os.path.basename(sys.argv[0])])