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@mikekucera/cytoscape-layers

v2.4.4

Published

Cytoscape.js plugin for rendering layers in SVG, DOM, or Canvas

Downloads

4

Readme

Cytoscape.js Layers Plugin

License: MIT NPM Package Github Actions Cytoscape Plugin

A Cytoscape.js plugin for easy rendering of different layers in SVG, HTML, or Canvas format.

Install

npm install cytoscape cytoscape-layers

Usage

see Samples on Github

or at this Open in CodePen

import cytoscape from 'cytoscape';
import Layers from 'cytoscape-layers';
cytoscape.use(Layers);

const cy = cytoscape({
  container: document.getElementById('app'),
  elements: [
    { data: { id: 'a' } },
    { data: { id: 'b' } },
    {
      data: {
        id: 'ab',
        source: 'a',
        target: 'b',
      },
    },
  ],
});
const layers = cy.layers();
layers.nodeLayer.insertAfter('html-static').node.innerHTML = 'Static Test Label';

layers.renderPerNode(layers.append('canvas'), (ctx, node, bb) => {
  ctx.strokeStyle = 'red';
  ctx.strokeRect(0, 0, bb.w, bb.h);
});
layers.renderPerNode(layers.append('html'), (elem, node) => {
  elem.textContent = node.id();
});
layers.renderPerEdge(layers.append('canvas'), (ctx, edge, path) => {
  ctx.strokeStyle = 'red';
  ctx.stroke(path);
});

Usage Examples

Annotation

render a bar and a histogram below each node

Code: annotation

image

Edge Animations

using a animated linear gradient to animate edges in a separate layer

Code: animatedEdges

animated edges

Circular Context Menu

similar to Cytoscape Cxtmenu extension.

Code: ctxmenu

image

HTML Label

similar to Cytoscape HTML Node Label extension

Code: node-html-label

image

Development Environment

npm i -g yarn
yarn set version latest
cat .yarnrc_patch.yml >> .yarnrc.yml
yarn
yarn pnpify --sdk vscode

Common commands

yarn compile
yarn test
yarn lint
yarn fix
yarn build
yarn docs
yarn release
yarn release:pre