Re-implemented Backdrop Node

Nodes/basic_nodes.py

@@ -0,0 +1,86 @@
+from OdenGraphQt import BaseNode, BaseNodeCircle
+
+
+class BasicNodeA(BaseNode):
+    """
+    A node class with 2 inputs and 2 outputs.
+    """
+
+    # unique node identifier.
+    __identifier__ = 'nodes.basic'
+
+    # initial default node name.
+    NODE_NAME = 'node A'
+
+    def __init__(self):
+        super(BasicNodeA, self).__init__()
+
+        # create node inputs.
+        self.add_input('in A')
+        self.add_input('in B')
+
+        # create node outputs.
+        self.add_output('out A')
+        self.add_output('out B')
+
+
+class BasicNodeB(BaseNode):
+    """
+    A node class with 3 inputs and 3 outputs.
+    The last input and last output can take in multiple pipes.
+    """
+
+    # unique node identifier.
+    __identifier__ = 'nodes.basic'
+
+    # initial default node name.
+    NODE_NAME = 'node B'
+
+    def __init__(self):
+        super(BasicNodeB, self).__init__()
+
+        # create node inputs
+        self.add_input('single 1')
+        self.add_input('single 2')
+        self.add_input('multi in', multi_input=True)
+
+        # create node outputs
+        self.add_output('single 1', multi_output=False)
+        self.add_output('single 2', multi_output=False)
+        self.add_output('multi out')
+
+
+class CircleNode(BaseNodeCircle):
+    """
+    A node class with 3 inputs and 3 outputs.
+    This node is a circular design.
+    """
+
+    # unique node identifier.
+    __identifier__ = 'nodes.basic'
+
+    # initial default node name.
+    NODE_NAME = 'Circle Node'
+
+    def __init__(self):
+        super(CircleNode, self).__init__()
+        self.set_color(10, 24, 38)
+
+        # create node inputs
+        p = self.add_input('in 1')
+        p.add_accept_port_type(
+            port_name='single 1',
+            port_type='out',
+            node_type='nodes.basic.BasicNodeB'
+        )
+
+        self.add_input('in 2')
+        self.add_input('in 3', multi_input=True)
+        self.add_input('in 4', display_name=False)
+        self.add_input('in 5', display_name=False)
+
+        # create node outputs
+        self.add_output('out 1')
+        self.add_output('out 2', multi_output=False)
+        self.add_output('out 3', multi_output=True, display_name=False)
+        self.add_output('out 4', multi_output=True, display_name=False)