NodeTypes: NodeOperation

Operation Node

Node Operation is a node which processes inputs through a command/function and return a new output. It has:

• Multiple inputs (upto 5)
• One-to-one connections
• Multisided sockets

Usage

def func(x,y): 
    # x and y are 2 inputs from the node, 
    # do some work with the inputs and return the final value
    return x+y
node = NodeOperation(canvas, text="Function", inputs=2, command=func)

Arguments

Parameter	Description
canvas	parent canvas where the node will be spawn
height	height of the node
width	width of the node
inputs	number of input sockets in the node
fg_color	foreground color of the node
text	change the text of the node
text_color	change the text color
font	change the font of text
justify	change the text anchor
highlightcolor	hover color of the node
border_width	adds an additional border to the nodes
border_color	border color of the node if border_width>0
hover	disable/enable the hover effect
socket_color	change the color of the input sockets, type: string or list of colors
output_socket_color	change the color of the output socket
socket_hover_color	change the hover color of the sockets
multiple_connection	connect multiple nodes to one input, returns a list
pass_node_id	pass node id in the command (bool)
socket_hover	enable/disable the socket hover
socket_radius	change the size of the sockets
corner_radius	change the roundness of the node frame
multiside	enable/disable multisided sockets
x	specify the x spawn location
y	specify the y spawn location
fixed	removes the delete key binding, makes the node non-removable
command	add the main command when the node is connected
none_inputs	calls the command even if none values are passed (default: False)
click_command	add a command when the node is clicked

Methods

• .configure(args...): change some attributes of the node.

• .config_socket(index, args...): configure individual sockets

  

  You can also add a small hover tooltip over the socket using this method.

  Eg: node.config_socket(1, hover_text="socket info", hover_text_color="black", hover_bg="white", socket_color="blue")

• .get(): get the output of the node/

• .get_inputs(): get the values of attached inputs.

• .destroy(): deletes the node from the canvas.

• .exists(): check if node exist in the canvas.