SF.net SVN: fclient: [578] trunk/fclient/src/fclient/lib/qt4ex/qtools.py

[<jU...@us...>]

Revision: 578
          http://fclient.svn.sourceforge.net/fclient/?rev=578&view=rev
Author:   jUrner
Date:     2008-07-11 09:35:17 -0700 (Fri, 11 Jul 2008)

Log Message:
-----------
new fuction castVariant() to tame QVariant a bit

Modified Paths:
--------------
    trunk/fclient/src/fclient/lib/qt4ex/qtools.py

Modified: trunk/fclient/src/fclient/lib/qt4ex/qtools.py
===================================================================
--- trunk/fclient/src/fclient/lib/qt4ex/qtools.py	2008-07-11 16:34:31 UTC (rev 577)
+++ trunk/fclient/src/fclient/lib/qt4ex/qtools.py	2008-07-11 16:35:17 UTC (rev 578)
@@ -56,10 +56,51 @@
 #**********************************************************************
 #
 #**********************************************************************
+class _castVariant(object):
+	"""for some reason PyQt does the right thing for int, long (...) variant type conversions	returning (value, ok)
+	emulating it here for all other types as well"""
+	_pyqt_does_the_right_thing_ = (
+			QtCore.QVariant.Double, 
+			QtCore.QVariant.Int, 
+			QtCore.QVariant.LongLong, 
+			QtCore.QVariant.UInt, 
+			QtCore.QVariant.ULongLong,
+			)
+	#NOTE: if QVariant gets equipped with another enum we are f***d
+	_variant_type_mapping = {}
+	_reversed_variant_type_mapping = {}
+	for name in dir(QtCore.QVariant):
+		if name[0].isupper():
+			value = getattr(QtCore.QVariant, name)
+			if isinstance(value, int):
+				_variant_type_mapping[value] = name
+				_reversed_variant_type_mapping[name] = value
+	del name, value
+	@classmethod
+	def castVariant(clss, v, variantType):
+		"""casts a variant to an object of the desired type
+		@param v: (QVariant) to convert
+		@param variantType: (QVariant.Type*) to convert to. alternatively the variantType can be a specified
+		as string corrosponding to QVariant.to* methods  e.g. 'Bool', 'UInt'
+		@return: (tuple) object, ok
+		"""
+		if isinstance(variantType, int):
+			szVariantType = clss._variant_type_mapping[variantType]
+		else:
+			szVariantType = variantType
+			variantType = clss._reversed_variant_type_mapping[variantType]
+		mthd = getattr(v, 'to' + szVariantType)
+		if variantType in clss._pyqt_does_the_right_thing_:
+			obj, ok = mthd()
+		else:
+			ok = v.convert(variantType)
+			obj = mthd()
+		return obj, ok
+castVariant =_castVariant.castVariant
+	
 
 
 
-
 	
 
 


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