def nullable_key(value):
"""
Returns an instance of PyQt4.QtCore.Qt.Key for the given value, if
possible. If the incoming value cannot be represented as a key,
returns None.
"""
if isinstance(value, Qt.Key):
return value
value = nullable_int(value)
return Qt.Key(value) if value else None
def keyClick(self, key, modifiers=Qt.NoModifier, widget=None):
"""Alias for ``QTest.keyClick``.
If widget is none - focused widget will be keyclicked
key may be QKeySequence or string
"""
if widget is None:
widget = self.app.focusWidget()
if widget is None:
widget = core.mainWindow()
assert widget is not None
if isinstance(key, basestring):
assert modifiers == Qt.NoModifier, 'Do not set modifiers, if using text key'
code = QKeySequence(key)[0]
key = Qt.Key(code & 0x01ffffff)
modifiers = Qt.KeyboardModifiers(code & 0xfe000000)
QTest.keyClick(widget, key, modifiers)
