Scheme Node (node
)¶
Scheme Node¶
-
class
orangecanvas.scheme.node.
SchemeNode
(description, title=None, position=None, properties=None, parent=None)[source]¶ 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_channel
(name)[source]¶ Return the input channel matching name. Raise a ValueError if not found.
-
output_channel
(name)[source]¶ Return the output channel matching name. Raise an ValueError if not found.
-
title
¶ The node title.
-
position
¶ (x, y)
tuple containing the position of the node in the scheme.
-
progress
¶ The current progress value. -1 if progress is not set.
-
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
-
clear_state_message
(message_id)[source]¶ Clear (remove) a message with message_id.
state_message_changed
signal will be emitted with a empty message for the message_id.
- description (