react-archer

🏹 Draw arrows between DOM elements in React 🖋

Installation

npm install react-archer --save or yarn add react-archer

Example

Try it out!

import { ArcherContainer, ArcherElement } from 'react-archer';

const rootStyle = { display: 'flex', justifyContent: 'center' };
const rowStyle = { margin: '200px 0', display: 'flex', justifyContent: 'space-between', }
const boxStyle = { padding: '10px', border: '1px solid black', };

const App = () => {
  return (
    <div>

      <ArcherContainer strokeColor='red' >
        <div style={rootStyle}>
          <ArcherElement
            id="root"
            relations={[{
              targetId: 'element2',
              targetAnchor: 'top',
              sourceAnchor: 'bottom',
            }]}
          >
            <div style={boxStyle}>Root</div>
          </ArcherElement>
        </div>

        <div style={rowStyle}>
          <ArcherElement
            id="element2"
            relations={[{
              targetId: 'element3',
              targetAnchor: 'left',
              sourceAnchor: 'right',
              style: { strokeColor: 'blue', strokeWidth: 1 },
              label: <div style={{ marginTop: '-20px' }}>Arrow 2</div>,
            }]}
          >
            <div style={boxStyle}>Element 2</div>
          </ArcherElement>

          <ArcherElement id="element3">
            <div style={boxStyle}>Element 3</div>
          </ArcherElement>

          <ArcherElement
            id="element4"
            relations={[{
              targetId: 'root',
              targetAnchor: 'right',
              sourceAnchor: 'left',
              label: 'Arrow 3',
            }]}
          >
            <div style={boxStyle}>Element 4</div>
          </ArcherElement>
        </div>
      </ArcherContainer>

    </div>
  );
}

export default App;

API

ArcherContainer

| Name | Type | Description | | - | - | - | | strokeColor | string | A color string '#ff0000' | strokeWidth | number | A size in px | strokeDasharray | string | Adds dashes to the stroke. It has to be a string representing an array of sizes. See some SVG strokes documentation. | noCurves | boolean | Set this to true if you want angles instead of curves | offset | number | Optional number for space between element and start/end of stroke | arrowLength | number | A size in px | arrowThickness | number | A size in px | children | React.Node |

ArcherElement

| Name | Type | Description | | - | - | - | | id | string | The id that will identify the Archer Element. Should only contain alphanumeric characters and standard characters that you can find in HTML ids. | children | React.Node | | relations | Array<Relation> |

The Relation type has the following shape:

{
  targetId: string,
  targetAnchor: 'top' | 'bottom' | 'left' | 'right' | 'middle',
  sourceAnchor: 'top' | 'bottom' | 'left' | 'right' | 'middle',
  label: React.Node,
  style: Style,
}

Please note that the middle anchor does not look very good: the curve won't look nice and the arrow marker will have a little offset. The issue won't be solved before a long time.

The Style type has the following shape:

{
  strokeColor: string,
  strokeWidth: number,
  strokeDasharray: number,
  arrowLength: number,
  arrowThickness: number,
  noCurves: boolean,
}

TODO

• Automatic anchoring option
• Add a Code Sandbox