Crate egui_nodes 

egui_nodes: A Egui port of imnodes

Using egui_nodes

There are some simple examples here

Here is the basic usage:

pub fn example_graph(ctx: &mut Context, links: &mut Vec<(usize, usize)>, ui: &mut Ui) {
    // add nodes with attributes
    let nodes = vec![
        NodeConstructor::new(0, Default::default())
            .with_title(|ui| ui.label("Example Node A"))
            .with_input_attribute(0, Default::default(), |ui| ui.label("Input"))
            .with_static_attribute(1, |ui| ui.label("Can't Connect to Me"))
            .with_output_attribute(2, Default::default(), |ui| ui.label("Output")),
        NodeConstructor::new(1, Default::default())
            .with_title(|ui| ui.label("Example Node B"))
            .with_static_attribute(3, |ui| ui.label("Can't Connect to Me"))
            .with_output_attribute(4, Default::default(), |ui| ui.label("Output"))
            .with_input_attribute(5, Default::default(), |ui| ui.label("Input"))
    ];
 
    // add them to the ui
    ctx.show(
        nodes,
        links.iter().enumerate().map(|(i, (start, end))| (i, *start, *end, LinkArgs::default())),
        ui
    );
     
    // remove destroyed links
    if let Some(idx) = ctx.link_destroyed() {
        links.remove(idx);
    }

    // add created links
    if let Some((start, end, _)) = ctx.link_created() {
        links.push((start, end))
    }
}

Structs

Context

The Context that tracks the state of the node editor

IO

This controls the modifers needed for certain mouse interactions

LinkArgs

The Color Style of a Link. If feilds are None then the Context style is used

NodeArgs

The Style of a Node. If feilds are None then the Context style is used

NodeConstructor

Used to construct a node and stores the relevant ui code for its title and attributes This is used so that the nodes can be rendered in the context depth order

PinArgs

The Visual Style of a Link. If feilds are None then the Context style is used. shape defualts to CircleFilled

Style

The style used by a context Example:

Enums

AttributeFlags

Controls the way that attribute pins behave

ColorStyle

Represents different color style values used by a Context

Modifiers

Used to track which Egui Modifier needs to be pressed for certain IO actions

PinShape

Controls the shape of an attribut pin. Triangle and TriangleFilled are not currently implemented and will not be drawn

StyleFlags

Controls some style aspects

StyleVar

Represents different style values used by a Context