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https://github.com/maxGraph/maxGraph

maxGraph is a fully client side JavaScript diagramming library
https://github.com/maxGraph/maxGraph

browser canvas diagram graph svg typescript

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maxGraph is a fully client side JavaScript diagramming library

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# maxGraph



[![npm version](https://img.shields.io/npm/v/@maxgraph/core?color=blue&style=flat)](https://www.npmjs.com/package/@maxgraph/core)

[![build status](https://github.com/maxGraph/maxGraph/workflows/Build/badge.svg)](https://github.com/maxGraph/maxGraph/actions/workflows/build.yml)



`maxGraph` is a TypeScript library which can display and allow interaction with vector diagrams. At a high level, it provides: 

- **Nodes**, also known as **vertices** which are typically represented by shapes like rectangles.

- **Edges** which can be lines and arrows which normally point between one node and another.



It provides many of the diagramming features which would be expected by a piece of presentation software like Microsoft® PowerPoint™

or LibreOffice® Impress such as being able to resize, move or rotate nodes, but has a stronger focus on automatic layout

algorithms and applications of [Graph Theory](https://en.wikipedia.org/wiki/Graph_theory). It is suited towards software

which requires finer-grained customization of functionality than off-the-shelf packages.



The `maxGraph` library uses no third-party software, it requires no plugins and can be integrated in virtually any framework (it's vanilla JS).



`maxGraph` is the successor of [mxGraph](https://github.com/jgraph/mxgraph) which is now end of life.

At first, it provides the same features as `mxGraph` and adds

- TypeScript support

- maintained npm package

- modern modular, tree shakable, version of `mxGraph` to reduce the whole package size



New features will follow.



## Browser support



Chrome, Edge, Firefox, Safari, Chromium based browsers (Brave, Opera, ....) for mobile and desktop.



## Project status



`maxGraph` is under active development and is in **alpha**. Please try it in your application and [submit an issue](https://github.com/maxGraph/maxGraph/issues)

if you think that something is not working.



You can also test `maxGraph` by running the [Storybook examples](#development) or [build the npm package locally](#build-local-npm-package) to get the latest changes.



## Install



Install the latest version of `maxGraph` from the [npm registry](https://www.npmjs.com/package/@maxgraph/core).



npm

```

npm install @maxgraph/core

```



yarn

```

yarn add @maxgraph/core

```



pnpm

```

pnpm add @maxgraph/core

```



## Getting Started



Here is an example that shows how to display a rectangle connected to an orange circle.



This example assumes that

- you are building an application that includes the maxGraph dependency, and it has been installed as explained above.

- your application includes a page that defines an element with the id `graph-container`.

- you want to use `TypeScript`, adapt it if you want to use `JavaScript` (mainly, remove references to the 'type' syntax).



```typescript

import {type CellStyle, Graph, InternalEvent} from '@maxgraph/core';



const container = document.getElementById('graph-container');

// Disables the built-in context menu

InternalEvent.disableContextMenu(container);



const graph = new Graph(container);

graph.setPanning(true); // Use mouse right button for panning

// Gets the default parent for inserting new cells. This

// is normally the first child of the root (ie. layer 0).

const parent = graph.getDefaultParent();



// Adds cells to the model in a single step

graph.batchUpdate(() => {

  const vertex01 = graph.insertVertex({

    parent,

    position: [10, 10],

    size: [100, 100],

    value: 'rectangle',

  });

  const vertex02 = graph.insertVertex({

    parent,

    position: [350, 90],

    size: [50, 50],

    style: {

      fillColor: 'orange',

      shape: 'ellipse',

      verticalAlign: 'top',

      verticalLabelPosition: 'bottom',

    },

    value: 'ellipse',

  });

  graph.insertEdge({

    parent,

    source: vertex01,

    target: vertex02,

    value: 'edge',

    style: {

      edgeStyle: 'orthogonalEdgeStyle',

      rounded: true,

    },

  });

});

```



You will see something like in the following _maxGraph panning_ demo:



![maxGraph panning demo](docs/images/maxgraph_demo.gif "maxGraph panning demo")



To continue, please have a look at:



- the [storybook stories](packages/html/stories) which demonstrates various features of maxGraph. The stories are currently written in `JavaScript` and will be progressively migrated to `TypeScript`.

- the [ts-example](packages/ts-example) project/application that demonstrates how to use `maxGraph` in a vanilla Typescript application powered by [Vite](https://vitejs.dev/).

- the https://github.com/maxGraph/maxgraph-integration-examples repository which shows how to integrate `maxGraph` with different frameworks and build tools.



Notice that some elements produced by `maxGraph` require to use [CSS and images](packages/website/docs/usage/css-and-images.md) provided in the npm package.



Until we provide a complete documentation, you can check the [mxGraph documentation](https://jgraph.github.io/mxgraph/).

The key resources are the JavaScript user manual which explain the concepts and how to start using the API, the JavaScript examples and the JavaScript API specification.

- https://jgraph.github.io/mxgraph/docs/tutorial.html

- https://jgraph.github.io/mxgraph/docs/manual.html

 

> Be aware that the maxGraph API doesn't fully match the mxGraph API (see the paragraph below about "[Migrating from mxGraph](#migrate-from-mxgraph)").



## TypeScript support



`maxGraph` is written in TypeScript and provides type definitions so `maxGraph` can be easily integrated into TypeScript applications.



`maxGraph` requires **TypeScript 3.8** or greater.



## Support



For usage question, please open a new [discussion](https://github.com/maxGraph/maxGraph/discussions/categories/q-a) on GitHub. You can also use

[GitHub discussions](https://github.com/maxGraph/maxGraph/discussions) for other topics like `maxGraph` development or to get the latest news.



##  Migrating from mxGraph



`maxGraph` APIs are not fully compatible with `mxGraph` APIs. The concepts are the same, so experienced `mxGraph` users should be able to switch from `mxGraph` to `maxGraph` without issues.



For a complete guide, see the [dedicated migration page](packages/website/docs/usage/migrate-from-mxgraph.md).



## History



On 2020-11-09, the development on `mxGraph` stopped and `mxGraph` became effectively end of life.



On 2020-11-12, a fork of the `mxGraph` was created with a call to Contributors.



> 12 Nov 2020.

> 

> If you are interested in becoming a maintainer of mxGraph please comment on issue [#1](https://github.com/maxGraph/maxGraph/issues/1)

> 

> Initial objectives:

> 

> - The first priority is to maintain a working version of mxGraph and its **npm package**

> - The ambitious stretch goal is to refactor the codebase to create a modern modular, tree shakable, version of mxGraph to reduce the whole package size.

> 

> -- Colin Claverie



The project was then [renamed on 2021-06-02](https://github.com/maxGraph/maxGraph/discussions/47) into `maxGraph` due to [licensing issue](https://github.com/maxGraph/maxGraph/discussions/23).



Starting from the `mxGraph` 4.2.2 release, we

- moved code to ES9

- removed Internet Explorer specific code

- migrated to TypeScript, based on the work initiated in [typed-mxgraph](https://github.com/typed-mxgraph/typed-mxgraph)

- migrated the examples to [Storybook](https://storybook.js.org/)



## Development



### Clean former mxGraph tags



Ensure you don't have the former `mxGraph` tags locally (see [#92](https://github.com/maxGraph/maxGraph/issues/92) fore more details):

```

git fetch --all --tags --prune

```



### Setting up local development environment



NodeJS requirements:

- use the version declared in [.nvmrc](./.nvmrc). Other versions may work but are not supported.

- this is the version used by GitHub Actions

- nvm users can run `nvm use`. If the Node version is not installed, nvm will state how to install the required version.



In the project root directory, execute



```sh

$ npm install

```



In the `packages/core` folder, execute



```sh

npm pack

```



To watch the core package, execute (in the project root directory)



```sh

$ npm run dev

```



and select `@maxgraph/core`.



To run the html(vanilla-js) version of [Storybook](https://storybook.js.org/), execute (in the project root directory)



```sh

$ npm run dev

```



and select `@maxgraph/html`.



Since both commands are in watch mode, so it's recommended to open two terminals and run them separately. When a file is saved from the core package, the html storybook will be automatically updated.



###  Building the npm package locally



**Reminder**: the released version are available at [npmjs](https://www.npmjs.com/package/@maxgraph/core). 



Run

- from the project root: `npm install`

- then, from the `packages/core` folder: `npm pack`



The `packages/core` folder or the generated `packages/core/maxgraph-core-***.tgz` file are now ready for use in your application, using [npm link](https://docs.npmjs.com/cli/v8/commands/npm-link) or `npm install`.



Examples of use can be found in the [maxgraph-integration-examples](https://github.com/maxGraph/maxgraph-integration-examples) repository.



### Release



See the dedicated [release](packages/website/docs/development/release.md) page.