ironflow.gui.workflows.canvas_widgets.flow module

The parent canvas for the whole flow representation.

class ironflow.gui.workflows.canvas_widgets.flow.FlowCanvas(screen: WorkflowsGUI, flow: Flow)

Bases: object

A canvas for representing a particular Ryven script, which is determined at instantiation by the currently active gui script.

Mouse behaviour:

• Mouse click (down and release) on a node element or any child element selects that element

• Mouse down, hold, and move on a node element or any child element selects the (parent) node and moves it

• Mouse click on nothing clears selection

• Mouse double-click on nothing creates a new node of the type currently selected in the node menu

• Mouse click on a selected (pressed) port (button) deselects (unpresses) that port (button)

• Todo: Mouse down, hold, and move on nothing draws a rectangle, everything inside is selected on release

Keyboard behaviour: Todo

• ESC: Deselect all.

• Backspace/Delete:

  • If a node is selected, deletes it

  • If a port is selected, deletes all connections it is part of

add_node(x: Number, y: Number, node: Node)

property canvas

canvas_restart() → None

clear_port_highlighting()

delete_selected() → None

deselect_all() → None

display()

draw_connection(port_1: int, port_2: int) → None

property flow_canvas: FlowCanvas

get_element_at_xy(x_in: Number, y_in: Number) → CanvasWidget | None

get_selected_objects() → list[CanvasWidget]

property gui: GUI

handle_keyboard_event(key: str, shift_key, ctrl_key, meta_key) → None

handle_mouse_down(x: Number, y: Number)

handle_mouse_move(x: Number, y: Number) → None

handle_mouse_up(x: Number, y: Number)

highlight_compatible_ports(selected: PortWidget)

load_node(x: Number, y: Number, node: Node) → NodeWidget

redraw() → None

property title: str

zoom_in() → None

zoom_out() → None