cola/app.py

   1 # Copyright (C) 2009, David Aguilar <davvid@gmail.com>
   2 """Provides the cola QApplication subclass"""
   3 # style note: we use camelCase here since we're masquerading a Qt class
   4
   5 import os
   6
   7 from PyQt4 import QtCore
   8 from PyQt4 import QtGui
   9
  10 from cola import utils
  11 from cola import resources
  12 from cola import i18n
  13
  14 _app = None
  15 def instance(argv):
  16     global _app
  17     if not _app:
  18         _app = QtGui.QApplication(argv)
  19     return _app
  20
  21
  22 class ColaApplication(object):
  23     """The main cola application
  24
  25     ColaApplication handles i18n of user-visible data
  26     """
  27
  28     def __init__(self, argv, locale=None, gui=True):
  29         """Initialize our QApplication for translation
  30         """
  31         if locale:
  32             os.environ['LANG'] = locale
  33             i18n.install()
  34
  35         # monkey-patch Qt's translate() to use our translate()
  36         if gui:
  37             self._app = instance(argv)
  38             self._app.setWindowIcon(QtGui.QIcon(resources.icon('git.svg')))
  39             self._translate_base = QtGui.QApplication.translate
  40             QtGui.QApplication.translate = self.translate
  41         else:
  42             self._app = QtCore.QCoreApplication(argv)
  43             self._translate_base = QtCore.QCoreApplication.translate
  44             QtCore.QCoreApplication.translate = self.translate
  45
  46     def translate(self, context, txt):
  47         """
  48         Translate strings with gettext
  49
  50         Supports @@noun/@@verb specifiers.
  51
  52         """
  53         trtxt = i18n.gettext(txt)
  54         if trtxt[-6:-4] == '@@': # handle @@verb / @@noun
  55             trtxt = trtxt[:-6]
  56         return trtxt
  57
  58     def activeWindow(self):
  59         """Wrap activeWindow()"""
  60         return self._app.activeWindow()
  61
  62     def exec_(self):
  63         """Wrap exec_()"""
  64         return self._app.exec_()
  65
  66     def setStyleSheet(self, txt):
  67         """Wrap setStyleSheet(txt)"""
  68         return self._app.setStyleSheet(txt)