Scheme Node (node
)
Scheme Node
-
class
orangecanvas.scheme.node.
SchemeNode
(description, title=None, position=None, properties=None, parent=None) Bases:
PyQt5.QtCore.QObject
A node in a
Scheme
.Parameters: - description (
WidgetDescription
) – Node description instance. - title (str, optional) – Node title string (if None description.name is used).
- position (tuple) – (x, y) tuple of floats for node position in a visual display.
- properties (dict) – Additional extra instance properties (settings, widget geometry, …)
- parent (
QObject
) – Parent object.
-
title_changed
(title) The title of the node has changed
-
position_changed
((x, y)) Position of the node in the scheme has changed
-
progress_changed
(progress) Node’s progress value has changed.
-
processing_state_changed
(state) Node’s processing state has changed.
-
input_channels
() Return a list of input channels (
InputSignal
) for the node.
-
output_channels
() Return a list of output channels (
OutputSignal
) for the node.
-
input_channel
(name) Return the input channel matching name. Raise a ValueError if not found.
-
output_channel
(name) Return the output channel matching name. Raise an ValueError if not found.
-
set_title
(title) Set the node title.
-
title
The node title.
-
set_position
(pos) Set the position (
(x, y)
tuple) of the node.
-
position
(x, y)
tuple containing the position of the node in the scheme.
-
set_progress
(value) Set the progress value.
-
progress
The current progress value. -1 if progress is not set.
-
set_processing_state
(state) Set the node processing state.
-
processing_state
The node processing state, 0 for not processing, 1 the node is busy.
-
status_message_changed
The node’s status tip has changes
-
state_message_changed
The node’s state message has changed
-
set_state_message
(message) Set a message to be displayed by a scheme view for this node.
-
state_messages
() Return a list of all state messages.
- description (