diff options
Diffstat (limited to 'doc/classes/GraphEdit.xml')
| -rw-r--r-- | doc/classes/GraphEdit.xml | 143 |
1 files changed, 75 insertions, 68 deletions
diff --git a/doc/classes/GraphEdit.xml b/doc/classes/GraphEdit.xml index d257e990f7..5050ce7715 100644 --- a/doc/classes/GraphEdit.xml +++ b/doc/classes/GraphEdit.xml @@ -1,37 +1,38 @@ <?xml version="1.0" encoding="UTF-8" ?> <class name="GraphEdit" inherits="Control" version="4.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="../class.xsd"> <brief_description> - GraphEdit is an area capable of showing various GraphNodes. It manages connection events between them. + GraphEdit is a control responsible for displaying and manipulating graph-like data using [GraphNode]s. It provides access to creation, removal, connection, and disconnection of nodes. </brief_description> <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 [member OS.low_processor_usage_mode]) when using GraphEdits. + GraphEdit provides tools for creation, manipulation, and display of various graphs. Its main purpose in the engine is to power the visual programming systems, such as visual shaders, but it is also available for use in user projects. + GraphEdit by itself is only an empty container, representing an infinite grid where [GraphNode]s can be placed. Each [GraphNode] represent a node in the graph, a single unit of data in the connected scheme. GraphEdit, in turn, helps to control various interactions with nodes and between nodes. When the user attempts to connect, disconnect, or close a [GraphNode], a signal is emitted in the GraphEdit, but no action is taken by default. It is the responsibility of the programmer utilizing this control to implement the necessary logic to determine how each request should be handled. + [b]Performance:[/b] It is greatly advised to enable low-processor usage mode (see [member OS.low_processor_usage_mode]) when using GraphEdits. </description> <tutorials> </tutorials> <methods> <method name="_get_connection_line" qualifiers="virtual const"> <return type="PackedVector2Array" /> - <param index="0" name="from" type="Vector2" /> - <param index="1" name="to" type="Vector2" /> + <param index="0" name="from_position" type="Vector2" /> + <param index="1" name="to_position" type="Vector2" /> <description> Virtual method which can be overridden to customize how connections are drawn. </description> </method> <method name="_is_in_input_hotzone" qualifiers="virtual"> <return type="bool" /> - <param index="0" name="graph_node" type="Object" /> - <param index="1" name="slot_index" type="int" /> + <param index="0" name="in_node" type="Object" /> + <param index="1" name="in_port" type="int" /> <param index="2" name="mouse_position" type="Vector2" /> <description> - Returns whether the [code]mouse_position[/code] is in the input hot zone. - By default, a hot zone is a [Rect2] positioned such that its center is at [code]graph_node[/code].[method GraphNode.get_connection_input_position]([code]slot_index[/code]) (For output's case, call [method GraphNode.get_connection_output_position] instead). The hot zone's width is twice the Theme Property [code]port_grab_distance_horizontal[/code], and its height is twice the [code]port_grab_distance_vertical[/code]. + Returns whether the [param mouse_position] is in the input hot zone. + By default, a hot zone is a [Rect2] positioned such that its center is at [param in_node].[method GraphNode.get_connection_input_position]([param in_port]) (For output's case, call [method GraphNode.get_connection_output_position] instead). The hot zone's width is twice the Theme Property [code]port_grab_distance_horizontal[/code], and its height is twice the [code]port_grab_distance_vertical[/code]. Below is a sample code to help get started: [codeblock] - func _is_in_input_hotzone(graph_node, slot_index, mouse_position): - var slot_size : Vector2 = Vector2(get_theme_constant("port_grab_distance_horizontal"), get_theme_constant("port_grab_distance_vertical")) - var slot_pos : Vector2 = graph_node.get_position() + graph_node.get_connection_input_position(slot_index) - slot_size / 2 - var rect = Rect2(slot_pos, slot_size) + func _is_in_input_hotzone(in_node, in_port, mouse_position): + var port_size : Vector2 = Vector2(get_theme_constant("port_grab_distance_horizontal"), get_theme_constant("port_grab_distance_vertical")) + var port_pos : Vector2 = in_node.get_position() + in_node.get_connection_input_position(in_port) - port_size / 2 + var rect = Rect2(port_pos, port_size) return rect.has_point(mouse_position) [/codeblock] @@ -39,17 +40,17 @@ </method> <method name="_is_in_output_hotzone" qualifiers="virtual"> <return type="bool" /> - <param index="0" name="graph_node" type="Object" /> - <param index="1" name="slot_index" type="int" /> + <param index="0" name="in_node" type="Object" /> + <param index="1" name="in_port" type="int" /> <param index="2" name="mouse_position" type="Vector2" /> <description> - Returns whether the [code]mouse_position[/code] is in the output hot zone. For more information on hot zones, see [method _is_in_input_hotzone]. + Returns whether the [param mouse_position] is in the output hot zone. For more information on hot zones, see [method _is_in_input_hotzone]. Below is a sample code to help get started: [codeblock] - func _is_in_output_hotzone(graph_node, slot_index, mouse_position): - var slot_size : Vector2 = Vector2(get_theme_constant("port_grab_distance_horizontal"), get_theme_constant("port_grab_distance_vertical")) - var slot_pos : Vector2 = graph_node.get_position() + graph_node.get_connection_output_position(slot_index) - slot_size / 2 - var rect = Rect2(slot_pos, slot_size) + func _is_in_output_hotzone(in_node, in_port, mouse_position): + var port_size : Vector2 = Vector2(get_theme_constant("port_grab_distance_horizontal"), get_theme_constant("port_grab_distance_vertical")) + var port_pos : Vector2 = in_node.get_position() + in_node.get_connection_output_position(in_port) - port_size / 2 + var rect = Rect2(port_pos, port_size) return rect.has_point(mouse_position) [/codeblock] @@ -57,17 +58,17 @@ </method> <method name="_is_node_hover_valid" qualifiers="virtual"> <return type="bool" /> - <param index="0" name="from" type="StringName" /> - <param index="1" name="from_slot" type="int" /> - <param index="2" name="to" type="StringName" /> - <param index="3" name="to_slot" type="int" /> + <param index="0" name="from_node" type="StringName" /> + <param index="1" name="from_port" type="int" /> + <param index="2" name="to_node" type="StringName" /> + <param index="3" name="to_port" type="int" /> <description> This virtual method can be used to insert additional error detection while the user is dragging a connection over a valid port. Return [code]true[/code] if the connection is indeed valid or return [code]false[/code] if the connection is impossible. If the connection is impossible, no snapping to the port and thus no connection request to that port will happen. In this example a connection to same node is suppressed: [codeblocks] [gdscript] - func _is_node_hover_valid(from, from_slot, to, to_slot): + func _is_node_hover_valid(from, from_port, to, to_port): return from != to [/gdscript] [csharp] @@ -83,21 +84,22 @@ <param index="0" name="from_type" type="int" /> <param index="1" name="to_type" type="int" /> <description> - Makes possible the connection between two different slot types. The type is defined with the [method GraphNode.set_slot] method. + Allows the connection between two different port types. The port type is defined individually for the left and the right port of each slot with the [method GraphNode.set_slot] method. + See also [method is_valid_connection_type] and [method remove_valid_connection_type]. </description> </method> <method name="add_valid_left_disconnect_type"> <return type="void" /> <param index="0" name="type" type="int" /> <description> - Makes possible to disconnect nodes when dragging from the slot at the left if it has the specified type. + Allows to disconnect nodes when dragging from the left port of the [GraphNode]'s slot if it has the specified type. See also [method remove_valid_left_disconnect_type]. </description> </method> <method name="add_valid_right_disconnect_type"> <return type="void" /> <param index="0" name="type" type="int" /> <description> - Makes possible to disconnect nodes when dragging from the slot at the right if it has the specified type. + Allows to disconnect nodes when dragging from the right port of the [GraphNode]'s slot if it has the specified type. See also [method remove_valid_right_disconnect_type]. </description> </method> <method name="arrange_nodes"> @@ -114,22 +116,22 @@ </method> <method name="connect_node"> <return type="int" enum="Error" /> - <param index="0" name="from" type="StringName" /> + <param index="0" name="from_node" type="StringName" /> <param index="1" name="from_port" type="int" /> - <param index="2" name="to" type="StringName" /> + <param index="2" name="to_node" type="StringName" /> <param index="3" name="to_port" type="int" /> <description> - Create a connection between the [code]from_port[/code] slot of the [code]from[/code] GraphNode and the [code]to_port[/code] slot of the [code]to[/code] GraphNode. If the connection already exists, no connection is created. + Create a connection between the [param from_port] of the [param from_node] [GraphNode] and the [param to_port] of the [param to_node] [GraphNode]. If the connection already exists, no connection is created. </description> </method> <method name="disconnect_node"> <return type="void" /> - <param index="0" name="from" type="StringName" /> + <param index="0" name="from_node" type="StringName" /> <param index="1" name="from_port" type="int" /> - <param index="2" name="to" type="StringName" /> + <param index="2" name="to_node" type="StringName" /> <param index="3" name="to_port" type="int" /> <description> - Removes the connection between the [code]from_port[/code] slot of the [code]from[/code] GraphNode and the [code]to_port[/code] slot of the [code]to[/code] GraphNode. If the connection does not exist, no connection is removed. + Removes the connection between the [param from_port] of the [param from_node] [GraphNode] and the [param to_port] of the [param to_node] [GraphNode]. If the connection does not exist, no connection is removed. </description> </method> <method name="force_connection_drag_end"> @@ -142,14 +144,14 @@ </method> <method name="get_connection_line"> <return type="PackedVector2Array" /> - <param index="0" name="from" type="Vector2" /> - <param index="1" name="to" type="Vector2" /> + <param index="0" name="from_node" type="Vector2" /> + <param index="1" name="to_node" type="Vector2" /> <description> - Returns the points which would make up a connection between [code]from[/code] and [code]to[/code]. + Returns the points which would make up a connection between [param from_node] and [param to_node]. </description> </method> <method name="get_connection_list" qualifiers="const"> - <return type="Array" /> + <return type="Dictionary[]" /> <description> Returns an Array containing the list of connections. A connection consists in a structure of the form [code]{ from_port: 0, from: "GraphNode name 0", to_port: 1, to: "GraphNode name 1" }[/code]. </description> @@ -163,12 +165,12 @@ </method> <method name="is_node_connected"> <return type="bool" /> - <param index="0" name="from" type="StringName" /> + <param index="0" name="from_node" type="StringName" /> <param index="1" name="from_port" type="int" /> - <param index="2" name="to" type="StringName" /> + <param index="2" name="to_node" type="StringName" /> <param index="3" name="to_port" type="int" /> <description> - Returns [code]true[/code] if the [code]from_port[/code] slot of the [code]from[/code] GraphNode is connected to the [code]to_port[/code] slot of the [code]to[/code] GraphNode. + Returns [code]true[/code] if the [param from_port] of the [param from_node] [GraphNode] is connected to the [param to_port] of the [param to_node] [GraphNode]. </description> </method> <method name="is_valid_connection_type" qualifiers="const"> @@ -176,7 +178,8 @@ <param index="0" name="from_type" type="int" /> <param index="1" name="to_type" type="int" /> <description> - Returns whether it's possible to connect slots of the specified types. + Returns whether it's possible to make a connection between two different port types. The port type is defined individually for the left and the right port of each slot with the [method GraphNode.set_slot] method. + See also [method add_valid_connection_type] and [method remove_valid_connection_type]. </description> </method> <method name="remove_valid_connection_type"> @@ -184,43 +187,47 @@ <param index="0" name="from_type" type="int" /> <param index="1" name="to_type" type="int" /> <description> - Makes it not possible to connect between two different slot types. The type is defined with the [method GraphNode.set_slot] method. + Disallows the connection between two different port types previously allowed by [method add_valid_connection_type]. The port type is defined individually for the left and the right port of each slot with the [method GraphNode.set_slot] method. + See also [method is_valid_connection_type]. </description> </method> <method name="remove_valid_left_disconnect_type"> <return type="void" /> <param index="0" name="type" type="int" /> <description> - Removes the possibility to disconnect nodes when dragging from the slot at the left if it has the specified type. + Disallows to disconnect nodes when dragging from the left port of the [GraphNode]'s slot if it has the specified type. Use this to disable disconnection previously allowed with [method add_valid_left_disconnect_type]. </description> </method> <method name="remove_valid_right_disconnect_type"> <return type="void" /> <param index="0" name="type" type="int" /> <description> - Removes the possibility to disconnect nodes when dragging from the slot at the right if it has the specified type. + Disallows to disconnect nodes when dragging from the right port of the [GraphNode]'s slot if it has the specified type. Use this to disable disconnection previously allowed with [method add_valid_right_disconnect_type]. </description> </method> <method name="set_connection_activity"> <return type="void" /> - <param index="0" name="from" type="StringName" /> + <param index="0" name="from_node" type="StringName" /> <param index="1" name="from_port" type="int" /> - <param index="2" name="to" type="StringName" /> + <param index="2" name="to_node" type="StringName" /> <param index="3" name="to_port" type="int" /> <param index="4" name="amount" type="float" /> <description> - Sets the coloration of the connection between [code]from[/code]'s [code]from_port[/code] and [code]to[/code]'s [code]to_port[/code] with the color provided in the [theme_item activity] theme property. + Sets the coloration of the connection between [param from_node]'s [param from_port] and [param to_node]'s [param to_port] with the color provided in the [theme_item activity] theme property. </description> </method> <method name="set_selected"> <return type="void" /> <param index="0" name="node" type="Node" /> <description> - Sets the specified [code]node[/code] as the one selected. + Sets the specified [param node] as the one selected. </description> </method> </methods> <members> + <member name="arrange_nodes_button_hidden" type="bool" setter="set_arrange_nodes_button_hidden" getter="is_arrange_nodes_button_hidden" default="false"> + If [code]true[/code], the Arrange Nodes button is hidden. + </member> <member name="clip_contents" type="bool" setter="set_clip_contents" getter="is_clipping_contents" overrides="Control" default="true" /> <member name="connection_lines_antialiased" type="bool" setter="set_connection_lines_antialiased" getter="is_connection_lines_antialiased" default="true"> If [code]true[/code], the lines between nodes will use antialiasing. @@ -284,36 +291,36 @@ </description> </signal> <signal name="connection_drag_started"> - <param index="0" name="from" type="String" /> - <param index="1" name="slot" type="String" /> + <param index="0" name="from_node" type="String" /> + <param index="1" name="from_port" type="int" /> <param index="2" name="is_output" type="bool" /> <description> Emitted at the beginning of a connection drag. </description> </signal> <signal name="connection_from_empty"> - <param index="0" name="to" type="StringName" /> - <param index="1" name="to_slot" type="int" /> + <param index="0" name="to_node" type="StringName" /> + <param index="1" name="to_port" type="int" /> <param index="2" name="release_position" type="Vector2" /> <description> - Emitted when user dragging connection from input port into empty space of the graph. + Emitted when user drags a connection from an input port into the empty space of the graph. </description> </signal> <signal name="connection_request"> - <param index="0" name="from" type="StringName" /> - <param index="1" name="from_slot" type="int" /> - <param index="2" name="to" type="StringName" /> - <param index="3" name="to_slot" type="int" /> + <param index="0" name="from_node" type="StringName" /> + <param index="1" name="from_port" type="int" /> + <param index="2" name="to_node" type="StringName" /> + <param index="3" name="to_port" type="int" /> <description> - Emitted to the GraphEdit when the connection between the [code]from_slot[/code] slot of the [code]from[/code] GraphNode and the [code]to_slot[/code] slot of the [code]to[/code] GraphNode is attempted to be created. + Emitted to the GraphEdit when the connection between the [param from_port] of the [param from_node] [GraphNode] and the [param to_port] of the [param to_node] [GraphNode] is attempted to be created. </description> </signal> <signal name="connection_to_empty"> - <param index="0" name="from" type="StringName" /> - <param index="1" name="from_slot" type="int" /> + <param index="0" name="from_node" type="StringName" /> + <param index="1" name="from_port" type="int" /> <param index="2" name="release_position" type="Vector2" /> <description> - Emitted when user dragging connection from output port into empty space of the graph. + Emitted when user drags a connection from an output port into the empty space of the graph. </description> </signal> <signal name="copy_nodes_request"> @@ -328,12 +335,12 @@ </description> </signal> <signal name="disconnection_request"> - <param index="0" name="from" type="StringName" /> - <param index="1" name="from_slot" type="int" /> - <param index="2" name="to" type="StringName" /> - <param index="3" name="to_slot" type="int" /> + <param index="0" name="from_node" type="StringName" /> + <param index="1" name="from_port" type="int" /> + <param index="2" name="to_node" type="StringName" /> + <param index="3" name="to_port" type="int" /> <description> - Emitted to the GraphEdit when the connection between [code]from_slot[/code] slot of [code]from[/code] GraphNode and [code]to_slot[/code] slot of [code]to[/code] GraphNode is attempted to be removed. + Emitted to the GraphEdit when the connection between [param from_port] of [param from_node] [GraphNode] and [param to_port] of [param to_node] [GraphNode] is attempted to be removed. </description> </signal> <signal name="duplicate_nodes_request"> @@ -365,7 +372,7 @@ <signal name="popup_request"> <param index="0" name="position" type="Vector2" /> <description> - Emitted when a popup is requested. Happens on right-clicking in the GraphEdit. [code]position[/code] is the position of the mouse pointer when the signal is sent. + Emitted when a popup is requested. Happens on right-clicking in the GraphEdit. [param position] is the position of the mouse pointer when the signal is sent. </description> </signal> <signal name="scroll_offset_changed"> |