GraphEdit

Inherits: Control < CanvasItem < Node < Object

GraphEdit is an area capable of showing various GraphNodes. It manages connection events between them.

Description

GraphEdit manages the showing of GraphNodes it contains, as well as connections and disconnections between them. Signals are sent for each of these two events. Disconnection between GraphNode slots is disabled by default.

It is greatly advised to enable low-processor usage mode (see OS.low_processor_usage_mode) when using GraphEdits.

Properties

FocusMode

focus_mode

2 (parent override)

bool

minimap_enabled

true

float

minimap_opacity

0.65

Vector2

minimap_size

Vector2( 240, 160 )

bool

rect_clip_content

true (parent override)

bool

right_disconnects

false

Vector2

scroll_offset

Vector2( 0, 0 )

bool

show_zoom_label

false

int

snap_distance

20

bool

use_snap

true

float

zoom

1.0

float

zoom_max

2.0736

float

zoom_min

0.232568

float

zoom_step

1.2

Methods

void

add_valid_connection_type ( int from_type, int to_type )

void

add_valid_left_disconnect_type ( int type )

void

add_valid_right_disconnect_type ( int type )

void

clear_connections ( )

Error

connect_node ( String from, int from_port, String to, int to_port )

void

disconnect_node ( String from, int from_port, String to, int to_port )

Array

get_connection_list ( ) const

HBoxContainer

get_zoom_hbox ( )

bool

is_node_connected ( String from, int from_port, String to, int to_port )

bool

is_valid_connection_type ( int from_type, int to_type ) const

void

remove_valid_connection_type ( int from_type, int to_type )

void

remove_valid_left_disconnect_type ( int type )

void

remove_valid_right_disconnect_type ( int type )

void

set_connection_activity ( String from, int from_port, String to, int to_port, float amount )

void

set_selected ( Node node )

Theme Properties

Color

activity

Color( 1, 1, 1, 1 )

int

bezier_len_neg

160

int

bezier_len_pos

80

StyleBox

bg

Color

grid_major

Color( 1, 1, 1, 0.2 )

Color

grid_minor

Color( 1, 1, 1, 0.05 )

Texture

minimap

Texture

minus

Texture

more

int

port_grab_distance_horizontal

24

int

port_grab_distance_vertical

6

Texture

reset

Color

selection_fill

Color( 1, 1, 1, 0.3 )

Color

selection_stroke

Color( 1, 1, 1, 0.8 )

Texture

snap

Signals

  • _begin_node_move ( )

Emitted at the beginning of a GraphNode movement.


  • _end_node_move ( )

Emitted at the end of a GraphNode movement.


Emitted when user dragging connection from input port into empty space of the graph.


Emitted to the GraphEdit when the connection between the from_slot slot of the from GraphNode and the to_slot slot of the to GraphNode is attempted to be created.


Emitted when user dragging connection from output port into empty space of the graph.


  • copy_nodes_request ( )

Emitted when the user presses Ctrl + C.


  • delete_nodes_request ( )

Emitted when a GraphNode is attempted to be removed from the GraphEdit.


Emitted to the GraphEdit when the connection between from_slot slot of from GraphNode and to_slot slot of to GraphNode is attempted to be removed.


  • duplicate_nodes_request ( )

Emitted when a GraphNode is attempted to be duplicated in the GraphEdit.


  • node_selected ( Node node )

Emitted when a GraphNode is selected.


  • node_unselected ( Node node )


  • paste_nodes_request ( )

Emitted when the user presses Ctrl + V.


  • popup_request ( Vector2 position )

Emitted when a popup is requested. Happens on right-clicking in the GraphEdit. position is the position of the mouse pointer when the signal is sent.


  • scroll_offset_changed ( Vector2 ofs )

Emitted when the scroll offset is changed by the user. It will not be emitted when changed in code.

Property Descriptions

  • bool minimap_enabled

Default

true

Setter

set_minimap_enabled(value)

Getter

is_minimap_enabled()

If true, the minimap is visible.


Default

0.65

Setter

set_minimap_opacity(value)

Getter

get_minimap_opacity()

The opacity of the minimap rectangle.


Default

Vector2( 240, 160 )

Setter

set_minimap_size(value)

Getter

get_minimap_size()

The size of the minimap rectangle. The map itself is based on the size of the grid area and is scaled to fit this rectangle.


  • bool right_disconnects

Default

false

Setter

set_right_disconnects(value)

Getter

is_right_disconnects_enabled()

If true, enables disconnection of existing connections in the GraphEdit by dragging the right end.


Default

Vector2( 0, 0 )

Setter

set_scroll_ofs(value)

Getter

get_scroll_ofs()

The scroll offset.


  • bool show_zoom_label

Default

false

Setter

set_show_zoom_label(value)

Getter

is_showing_zoom_label()

If true, makes a label with the current zoom level visible. The zoom value is displayed in percents.


  • int snap_distance

Default

20

Setter

set_snap(value)

Getter

get_snap()

The snapping distance in pixels.


Default

true

Setter

set_use_snap(value)

Getter

is_using_snap()

If true, enables snapping.


Default

1.0

Setter

set_zoom(value)

Getter

get_zoom()

The current zoom value.


Default

2.0736

Setter

set_zoom_max(value)

Getter

get_zoom_max()

The upper zoom limit.


Default

0.232568

Setter

set_zoom_min(value)

Getter

get_zoom_min()

The lower zoom limit.


Default

1.2

Setter

set_zoom_step(value)

Getter

get_zoom_step()

The step of each zoom level.

Method Descriptions

  • void add_valid_connection_type ( int from_type, int to_type )

Makes possible the connection between two different slot types. The type is defined with the GraphNode.set_slot method.


  • void add_valid_left_disconnect_type ( int type )

Makes possible to disconnect nodes when dragging from the slot at the left if it has the specified type.


  • void add_valid_right_disconnect_type ( int type )

Makes possible to disconnect nodes when dragging from the slot at the right if it has the specified type.


  • void clear_connections ( )

Removes all connections between nodes.


Create a connection between the from_port slot of the from GraphNode and the to_port slot of the to GraphNode. If the connection already exists, no connection is created.


Removes the connection between the from_port slot of the from GraphNode and the to_port slot of the to GraphNode. If the connection does not exist, no connection is removed.


  • Array get_connection_list ( ) const

Returns an Array containing the list of connections. A connection consists in a structure of the form { from_port: 0, from: "GraphNode name 0", to_port: 1, to: "GraphNode name 1" }.


Gets the HBoxContainer that contains the zooming and grid snap controls in the top left of the graph. You can use this method to reposition the toolbar or to add your own custom controls to it.

Warning: This is a required internal node, removing and freeing it may cause a crash. If you wish to hide it or any of its children, use their CanvasItem.visible property.


Returns true if the from_port slot of the from GraphNode is connected to the to_port slot of the to GraphNode.


  • bool is_valid_connection_type ( int from_type, int to_type ) const

Returns whether it's possible to connect slots of the specified types.


  • void remove_valid_connection_type ( int from_type, int to_type )

Makes it not possible to connect between two different slot types. The type is defined with the GraphNode.set_slot method.


  • void remove_valid_left_disconnect_type ( int type )

Removes the possibility to disconnect nodes when dragging from the slot at the left if it has the specified type.


  • void remove_valid_right_disconnect_type ( int type )

Removes the possibility to disconnect nodes when dragging from the slot at the right if it has the specified type.


Sets the coloration of the connection between from's from_port and to's to_port with the color provided in the activity theme property.


  • void set_selected ( Node node )

Sets the specified node as the one selected.

Theme Property Descriptions

Default

Color( 1, 1, 1, 1 )


  • int bezier_len_neg

Default

160


  • int bezier_len_pos

Default

80


The background drawn under the grid.


Default

Color( 1, 1, 1, 0.2 )

Color of major grid lines.


Default

Color( 1, 1, 1, 0.05 )

Color of minor grid lines.



The icon for the zoom out button.


The icon for the zoom in button.


  • int port_grab_distance_horizontal

Default

24

The horizontal range within which a port can be grabbed (on both sides).


  • int port_grab_distance_vertical

Default

6

The vertical range within which a port can be grabbed (on both sides).


The icon for the zoom reset button.


Default

Color( 1, 1, 1, 0.3 )

The fill color of the selection rectangle.


Default

Color( 1, 1, 1, 0.8 )

The outline color of the selection rectangle.


The icon for the snap toggle button.