喜欢，请到这里给我们投一票：https://www.oschina.net/project/top_cn_2019?utm_source=projectdetail 。（开发工具栏，或下滑网页搜索：Topology）

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Le5le-topology

Le5le-topology is a diagram visualization framework uses canvas and typescript. Developers are able to build diagram (topology, UML), micro-services architecture, SCADA and so on.

• → Home website, online diagramming . It is very slow while open the site for my network speed is 1Mb/s.

• → Online Demo

• → Topology Docs

• → Bundle download

• → Vue Guide

• → React Guide

Why le5le-topology

• Extensible - Developers are able to make own diagrams easily. You just have to focus on your core logic in the framework.
• Fast rendering
• Animate
• TypeScript

Source

- libs
  |- topology  // The topogoly-core lib source.
- src  // The topology.le5le.com source that uses angular.
- bundle
- demo // The demo uses js.

Getting Started

typescrypt/es6

import { Topology } from 'topology-core';

var canvas = new Topology('topo-dom', options);
canvas.open(data);

es5

<script src="/bundle/topology.bundle.js"></script>

var canvas = new Le5leTopology.Topology('topo-canvas', {});
canvas.open(data);

Docs

[Todo]

→ Chinese docs

Development

$ yarn
$ npm start

# build
$ npm run build

http proxy on localhost

# First, set your host: 127.0.0.1 local.dev.le5le.com
$ npm run dev

http proxy on topology.le5le.com

# First, set your host: 127.0.0.1 local.le5le.com
$ npm run prod

Topology-core lib

[libs/topology#] yarn

# build
[libs/topology#] npm run build

Topology-flow-diagram lib

[libs/topology-flow-diagram#] yarn

# build
[libs/topology-flow-diagram#] npm run build

Demo

[demo#] yarn

# build
[demo#] npm run build

Make your diagrams

• Step 1:

→ Reference

export function diagram(ctx: CanvasRenderingContext2D, node: Node) {
  ctx.beginPath();
  // ...
  ctx.fill();
  ctx.stroke();
}

// [Option] The default is same to rectangle.
export function diagramIconRect(node: Node) {
  let w = node.rect.width / 3;
  let h = node.rect.height / 3;
  if (w > h) {
    w = h;
  } else {
    h = w;
  }
  let top = node.rect.width / 5;
  if (top < 10) {
    top = 10;
  }
  node.iconRect = new Rect(node.rect.x + (node.rect.width - w) / 2, node.rect.y + top, w, h);
}

// [Option] The default is same to rectangle.
// fullTextRect - Only text.
// iconTextRect - Incloud icon and text.
export function diagramTextRect(node: Node) {
  let bottom = node.rect.height / 10;
  if (bottom < 5) {
    bottom = 0;
  }
  node.iconTextRect = new Rect(
    node.rect.x + node.rect.width / 3,
    node.rect.y + (node.rect.height * 2) / 3 - bottom,
    node.rect.width / 3,
    node.rect.height / 3 - 5
  );

  const w = node.rect.width / 2;
  const h = (node.rect.height * 1) / 2;
  node.fullTextRect = new Rect(node.rect.x + (node.rect.width - w) / 2, node.rect.y + node.rect.height / 4, w, h);
}

// [Option] The default is same to rectangle.
export function diagramAnchors(node: Node) {
  node.anchors.push(new Point(node.rect.x + node.rect.width / 2, node.rect.y, Direction.Up));
  node.anchors.push(new Point(node.rect.x + node.rect.width, node.rect.y + node.rect.height / 2, Direction.Right));
  node.anchors.push(new Point(node.rect.x + node.rect.width / 2, node.rect.y + node.rect.height, Direction.Bottom));
  node.anchors.push(new Point(node.rect.x, node.rect.y + node.rect.height / 2, Direction.Left));
}

• Step 2:

→ Reference

// registerNode: Register a custom node.
// name - The name of node.
// drawFn - How to draw.
// anchorsFn - How to get the anchors.
// iconRectFn - How to get the icon rect.
// textRectFn - How to get the text rect.
// force - Overwirte the node if exists.
registerNode(
name: string,
drawFn: (ctx: CanvasRenderingContext2D, node: Node) => void,
anchorsFn?: (node: Node) => void,
iconRectFn?: (node: Node) => void,
textRectFn?: (node: Node) => void,
force?: boolean
);

How to Contribute

If you have any comment or advice, please report your issue, or make any change as you wish and submit an PR.

alsmile123@qq.com

License

MIT © le5le.com