Generates a new pixmap based on the inputed base64 data.
    
    :param      base64 | <str>

def generatePixmap(base64_data):
    """
    Generates a new pixmap based on the inputed base64 data.
    
    :param      base64 | <str>
    """
    import_qt(globals())
    
    binary_data = binascii.a2b_base64(base64_data)
    arr = QtCore.QByteArray.fromRawData(binary_data)
    img = QtGui.QImage.fromData(arr)
    return QtGui.QPixmap(img)