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Allow binary operator nodes to select output type

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This commit is contained in:
Luke Campagnola 2017-09-15 08:59:15 -07:00
parent 19fc846b90
commit 237b848837
1 changed files with 27 additions and 2 deletions
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29
pyqtgraph/flowchart/library/Operators.py
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@ -1,5 +1,7 @@
# -*- coding: utf-8 -*-
from ..Node import Node
from .common import CtrlNode
class UniOpNode(Node):
"""Generic node for performing any operation like Out = In.fn()"""
@ -13,11 +15,22 @@ class UniOpNode(Node):
def process(self, **args):
return {'Out': getattr(args['In'], self.fn)()}
class BinOpNode(Node):
class BinOpNode(CtrlNode):
"""Generic node for performing any operation like A.fn(B)"""
_dtypes = [
'float64', 'float32', 'float16',
'int64', 'int32', 'int16', 'int8',
'uint64', 'uint32', 'uint16', 'uint8'
]
uiTemplate = [
('outputType', 'combo', {'values': ['no change', 'input A', 'input B'] + _dtypes , 'index': 0})
]
def __init__(self, name, fn):
self.fn = fn
Node.__init__(self, name, terminals={
CtrlNode.__init__(self, name, terminals={
'A': {'io': 'in'},
'B': {'io': 'in'},
'Out': {'io': 'out', 'bypass': 'A'}
@ -36,6 +49,18 @@ class BinOpNode(Node):
out = fn(args['B'])
if out is NotImplemented:
raise Exception("Operation %s not implemented between %s and %s" % (fn, str(type(args['A'])), str(type(args['B']))))
# Coerce dtype if requested
typ = self.stateGroup.state()['outputType']
if typ == 'no change':
pass
elif typ == 'input A':
out = out.astype(args['A'].dtype)
elif typ == 'input B':
out = out.astype(args['B'].dtype)
else:
out = out.astype(typ)
#print " ", fn, out
return {'Out': out}