def __init__(self,prop):
QVariantAnimation.__init__(self)
self._property = prop
self.startFromCurrent = True
self.relative = False
def setDuration(self,value): # prevent setDuration from changing property's current value
tmpval = self._property() # store the property's current value
QVariantAnimation.setDuration(self,value) # undergo the normal process
self._property.setTo(tmpval,update=False) # restore the property to the previous value
def setEndValue(self,value): # prevent setEndValue from changing property's current value
tmpval = self._property() # store the property's current value
QVariantAnimation.setEndValue(self,self._property.conversions[value.__class__](value)) # undergo the normal process
self._property.setTo(tmpval,update=False) # restore the property to the previous value
def start(self, *args, **kwargs): # for debugging
return QVariantAnimation.start(self, *args, **kwargs)
