Different Types of Shapes in React Diagram Component
21 Oct 202524 minutes to read
The React Diagram component provides comprehensive support for adding various types of nodes to create rich, interactive diagrams. Shapes serve as the fundamental building blocks for representing data, processes, and visual elements in your diagrams.
This guide covers the following shape types and their implementation:
- Text nodes - Display formatted text content.
- Image nodes - Embed images from various sources.
- HTML nodes - Include custom HTML elements.
- Native nodes - Integrate SVG elements.
- Basic shapes - Use predefined geometric shapes.
- Path shapes - Create custom geometric paths.
- Flow shapes - Represent process workflows.
Text Nodes
Text nodes enable you to add formatted text content directly to your diagram. They are ideal for labels, annotations, and textual information that enhances diagram readability.
To create a text node, set the shape property to text and define the content object with your desired text and styling options.
import * as React from "react";
import * as ReactDOM from "react-dom";
import { DiagramComponent } from "@syncfusion/ej2-react-diagrams";
let diagramInstance;
// A node is created and stored in nodes array.
let node = [{
// Position of the node
offsetX: 250,
offsetY: 250,
// Size of the node
width: 100,
height: 100,
//Sets type of the shape as text
shape: {
type: 'Text',
content: 'Text Element'
},
//Customizes the appearances such as fill
style: {
fill: 'none',
}
}];
// initialize Diagram component
function App() {
return (<DiagramComponent id="container" width={'100%'} height={'600px'} ref={(diagram) => (diagramInstance = diagram)}
// Add node
nodes={node} created={() => {
diagramInstance.select([diagramInstance.nodes[0]]);
}}/>);
}
const root = ReactDOM.createRoot(document.getElementById('diagram'));
root.render(<App />);import * as React from "react";
import * as ReactDOM from "react-dom";
import {
NodeModel,
DiagramComponent
} from "@syncfusion/ej2-react-diagrams";
let diagramInstance: DiagramComponent;
// A node is created and stored in nodes array.
let node: NodeModel[] = [{
// Position of the node
offsetX: 250,
offsetY: 250,
// Size of the node
width: 100,
height: 100,
//Sets type of the shape as text
shape: {
type: 'Text',
content: 'Text Element'
},
//Customizes the appearances such as fill.
style: {
fill: 'none',
}
}];
// initialize Diagram component
function App() {
return (
<DiagramComponent
id="container"
width={'100%'}
height={'600px'}
ref={(diagram) => (diagramInstance = diagram)}
// Add node
nodes={node}
created={() => {
diagramInstance.select([diagramInstance.nodes[0]]);
}}
// render initialized Diagram
/>
);
}
const root = ReactDOM.createRoot(document.getElementById('diagram'));
root.render(<App />);Image Nodes
Image nodes allow you to incorporate visual elements from various sources including URLs, local files, and Base64-encoded data. These nodes are perfect for adding logos, icons, or illustrative content to your diagrams.
To create an image node, set the shape property to image and specify the image source through the source property.
import * as React from "react";
import * as ReactDOM from "react-dom";
import { DiagramComponent } from "@syncfusion/ej2-react-diagrams";
// A node is created and stored in nodes array.
let node = [{
// Position of the node
offsetX: 250,
offsetY: 250,
// Size of the node
width: 100,
height: 100,
// sets the type of the shape as image
shape: {
type: 'Image',
source: 'https://ej2.syncfusion.com/demos/src/diagram/employees/image16.png'
},
//Customizes the appearances such as fill.
style: {
fill: 'none'
}
}];
// initialize Diagram component
function App() {
return (<DiagramComponent id="container" width={'100%'} height={'600px'}
// Add node
nodes={node}/>);
}
const root = ReactDOM.createRoot(document.getElementById('diagram'));
root.render(<App />);import * as React from "react";
import * as ReactDOM from "react-dom";
import {
NodeModel,
DiagramComponent
} from "@syncfusion/ej2-react-diagrams";
// A node is created and stored in nodes array.
let node: NodeModel[] = [{
// Position of the node
offsetX: 250,
offsetY: 250,
// Size of the node
width: 100,
height: 100,
// sets the type of the shape as image
shape: {
type: 'Image',
source: 'https://ej2.syncfusion.com/demos/src/diagram/employees/image16.png'
},
//Customizes the appearances such as fill.
style: {
fill: 'none'
}
}];
// initialize Diagram component
function App() {
return (
<DiagramComponent
id="container"
width={'100%'}
height={'600px'}
// Add node
nodes={node}
// render initialized Diagram
/>
);
}
const root = ReactDOM.createRoot(document.getElementById('diagram'));
root.render(<App />);Base64 Encoded Images
For scenarios where you need to embed images directly without external dependencies, use Base64-encoded image data. This approach ensures your diagrams remain self-contained and portable.
import * as React from "react";
import * as ReactDOM from "react-dom";
import { DiagramComponent } from "@syncfusion/ej2-react-diagrams";
// A node is created and stored in nodes array.
let node = [{
// Position of the node
offsetX: 250,
offsetY: 250,
// Size of the node
width: 100,
height: 100,
// sets the type of the shape as image
shape: {
type: 'Image',
source: 'data:image/gif;base64,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'
},
//Customizes the appearances such as text, font, fill, and stroke.
style: {
fill: 'none'
}
}];
// initialize Diagram component
function App() {
return (<DiagramComponent id="container" width={'100%'} height={'600px'}
// Add node
nodes={node}/>);
}
const root = ReactDOM.createRoot(document.getElementById('diagram'));
root.render(<App />);import * as React from "react";
import * as ReactDOM from "react-dom";
import {
NodeModel,
DiagramComponent
} from "@syncfusion/ej2-react-diagrams";
// A node is created and stored in nodes array.
let node: NodeModel[] = [{
// Position of the node
offsetX: 250,
offsetY: 250,
// Size of the node
width: 100,
height: 100,
// sets the type of the shape as image
shape: {
type: 'Image',
source: 'data:image/gif;base64,R0lGODlhPQBEAPeoAJosM//AwO/AwHVYZ/z595kzAP/s7P+goOXMv8+fhw/v739/f+8PD98fH/8mJl+fn/9ZWb8/PzWlwv///6wWGbImAPgTEMImIN9gUFCEm/gDALULDN8PAD6atYdCTX9gUNKlj8wZAKUsAOzZz+UMAOsJAP/Z2ccMDA8PD/95eX5NWvsJCOVNQPtfX/8zM8+QePLl38MGBr8JCP+zs9myn/8GBqwpAP/GxgwJCPny78lzYLgjAJ8vAP9fX/+MjMUcAN8zM/9wcM8ZGcATEL+QePdZWf/29uc/P9cmJu9MTDImIN+/r7+/vz8/P8VNQGNugV8AAF9fX8swMNgTAFlDOICAgPNSUnNWSMQ5MBAQEJE3QPIGAM9AQMqGcG9vb6MhJsEdGM8vLx8fH98AANIWAMuQeL8fABkTEPPQ0OM5OSYdGFl5jo+Pj/+pqcsTE78wMFNGQLYmID4dGPvd3UBAQJmTkP+8vH9QUK+vr8ZWSHpzcJMmILdwcLOGcHRQUHxwcK9PT9DQ0O/v70w5MLypoG8wKOuwsP/g4P/Q0IcwKEswKMl8aJ9fX2xjdOtGRs/Pz+Dg4GImIP8gIH0sKEAwKKmTiKZ8aB/f39Wsl+LFt8dgUE9PT5x5aHBwcP+AgP+WltdgYMyZfyywz78AAAAAAAD///8AAP9mZv///wAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAACH5BAEAAKgALAAAAAA9AEQAAAj/AFEJHEiwoMGDCBMqXMiwocAbBww4nEhxoYkUpzJGrMixogkfGUNqlNixJEIDB0SqHGmyJSojM1bKZOmyop0gM3Oe2liTISKMOoPy7GnwY9CjIYcSRYm0aVKSLmE6nfq05QycVLPuhDrxBlCtYJUqNAq2bNWEBj6ZXRuyxZyDRtqwnXvkhACDV+euTeJm1Ki7A73qNWtFiF+/gA95Gly2CJLDhwEHMOUAAuOpLYDEgBxZ4GRTlC1fDnpkM+fOqD6DDj1aZpITp0dtGCDhr+fVuCu3zlg49ijaokTZTo27uG7Gjn2P+hI8+PDPERoUB318bWbfAJ5sUNFcuGRTYUqV/3ogfXp1rWlMc6awJjiAAd2fm4ogXjz56aypOoIde4OE5u/F9x199dlXnnGiHZWEYbGpsAEA3QXYnHwEFliKAgswgJ8LPeiUXGwedCAKABACCN+EA1pYIIYaFlcDhytd51sGAJbo3onOpajiihlO92KHGaUXGwWjUBChjSPiWJuOO/LYIm4v1tXfE6J4gCSJEZ7YgRYUNrkji9P55sF/ogxw5ZkSqIDaZBV6aSGYq/lGZplndkckZ98xoICbTcIJGQAZcNmdmUc210hs35nCyJ58fgmIKX5RQGOZowxaZwYA+JaoKQwswGijBV4C6SiTUmpphMspJx9unX4KaimjDv9aaXOEBteBqmuuxgEHoLX6Kqx+yXqqBANsgCtit4FWQAEkrNbpq7HSOmtwag5w57GrmlJBASEU18ADjUYb3ADTinIttsgSB1oJFfA63bduimuqKB1keqwUhoCSK374wbujvOSu4QG6UvxBRydcpKsav++Ca6G8A6Pr1x2kVMyHwsVxUALDq/krnrhPSOzXG1lUTIoffqGR7Goi2MAxbv6O2kEG56I7CSlRsEFKFVyovDJoIRTg7sugNRDGqCJzJgcKE0ywc0ELm6KBCCJo8DIPFeCWNGcyqNFE06ToAfV0HBRgxsvLThHn1oddQMrXj5DyAQgjEHSAJMWZwS3HPxT/QMbabI/iBCliMLEJKX2EEkomBAUCxRi42VDADxyTYDVogV+wSChqmKxEKCDAYFDFj4OmwbY7bDGdBhtrnTQYOigeChUmc1K3QTnAUfEgGFgAWt88hKA6aCRIXhxnQ1yg3BCayK44EWdkUQcBByEQChFXfCB776aQsG0BIlQgQgE8qO26X1h8cEUep8ngRBnOy74E9QgRgEAC8SvOfQkh7FDBDmS43PmGoIiKUUEGkMEC/PJHgxw0xH74yx/3XnaYRJgMB8obxQW6kL9QYEJ0FIFgByfIL7/IQAlvQwEpnAC7DtLNJCKUoO/w45c44GwCXiAFB/OXAATQryUxdN4LfFiwgjCNYg+kYMIEFkCKDs6PKAIJouyGWMS1FSKJOMRB/BoIxYJIUXFUxNwoIkEKPAgCBZSQHQ1A2EWDfDEUVLyADj5AChSIQW6gu10bE/JG2VnCZGfo4R4d0sdQoBAHhPjhIB94v/wRoRKQWGRHgrhGSQJxCS+0pCZbEhAAOw=='
},
//Customizes the appearances such as text, font, fill, and stroke.
style: {
fill: 'none'
}
}];
// initialize Diagram component
function App() {
return (
<DiagramComponent
id="container"
width={'100%'}
height={'600px'}
// Add node
nodes={node}
// render initialized Diagram
/>
);
}
const root = ReactDOM.createRoot(document.getElementById('diagram'));
root.render(<App />);NOTE
When deploying applications with image nodes, ensure your HTML files are served from a web server. Local file access restrictions in Chrome and Firefox may prevent image export functionality due to security policies. For more information, refer to browser-specific documentation on local image handling.
Link 1: http://asked.online/draw-images-on-canvas-locally-using-chrome/2546077/
Link 2: http://stackoverflow.com/questions/4761711/local-image-in-canvas-in-chrome
Image Alignment and Scaling
Control how images appear within node boundaries using alignment and scaling properties. These features ensure your images display correctly regardless of node dimensions. The scale property of the node is set as meet. The align property controls positioning.
The following code illustrates how to use scale and align properties to stretch the image.
import * as React from "react";
import * as ReactDOM from "react-dom";
import { DiagramComponent } from "@syncfusion/ej2-react-diagrams";
// A node is created and stored in nodes array.
let node = [{
// Position of the node
offsetX: 250,
offsetY: 250,
// Size of the node
width: 300,
height: 100,
//sets the type of the shape as Image
shape: {
type: 'Image',
source: 'https://ej2.syncfusion.com/demos/src/diagram/employees/image16.png',
scale: 'Stretch'
},
//Customizes the appearances such as text, font, fill, and stroke.
style: {
fill: 'none'
}
}];
// initialize Diagram component
function App() {
return (<DiagramComponent id="container" width={'100%'} height={'600px'}
// Add node
nodes={node}/>);
}
const root = ReactDOM.createRoot(document.getElementById('diagram'));
root.render(<App />);import * as React from "react";
import * as ReactDOM from "react-dom";
import {
NodeModel,
DiagramComponent
} from "@syncfusion/ej2-react-diagrams";
// A node is created and stored in nodes array.
let node: NodeModel[] = [{
// Position of the node
offsetX: 250,
offsetY: 250,
// Size of the node
width: 300,
height: 100,
//sets the type of the shape as Image
shape: {
type: 'Image',
source: 'https://ej2.syncfusion.com/demos/src/diagram/employees/image16.png',
scale: 'Stretch'
},
//Customizes the appearances such as text, font, fill, and stroke.
style: {
fill: 'none'
}
}];
// initialize Diagram component
function App() {
return (
<DiagramComponent
id="container"
width={'100%'}
height={'600px'}
// Add node
nodes={node}
// render initialized Diagram
/>
);
}
const root = ReactDOM.createRoot(document.getElementById('diagram'));
root.render(<App />);The following table illustrates all the possible scale options for the image node.
| Values | Images |
|---|---|
| None |  |
| Meet |  |
| Slice |  |
| Stretch |  |
NOTE
To visualize the changes in image scaling, it is Essential® to use the align property along with scale.
HTML Nodes
HTML nodes provide the flexibility to embed rich HTML content directly into your diagrams. This powerful feature enables you to create highly customized visual elements with advanced formatting, styling, and interactivity.
Set the shape property to Html to create HTML nodes. You can define content using either inline templates or external node templates.
NOTE
HTML nodes cannot be exported to image formats (JPEG, PNG, BMP) due to canvas rendering limitations. This is by design, as converting arbitrary HTML content to canvas equivalents is not feasible for all HTML elements.
HTML Node with Content Template
To render an HTML node with a content template, we need to define the desired template string within the content property. The following code illustrates how to create an HTML node with a content template:
import * as React from "react";
import * as ReactDOM from "react-dom";
import { DiagramComponent } from "@syncfusion/ej2-react-diagrams";
// A node is created and stored in nodes array.
let node = [{
// Position of the node
offsetX: 250,
offsetY: 250,
// Size of the node
width: 100,
height: 100,
//sets the type of the shape as HTML
shape: {
type: 'HTML',
content: '<div style="background:#6BA5D7;height:100%;width:100%;"><button type="button" style="width:100px"> Button</button></div>',
}
}];
// initialize Diagram component
function App() {
return (<DiagramComponent id="container" width={'100%'} height={'600px'}
// Add node
nodes={node}/>);
}
const root = ReactDOM.createRoot(document.getElementById('diagram'));
root.render(<App />);import * as React from "react";
import * as ReactDOM from "react-dom";
import {
NodeModel,
DiagramComponent
} from "@syncfusion/ej2-react-diagrams";
// A node is created and stored in nodes array.
let node: NodeModel[] = [{
// Position of the node
offsetX: 250,
offsetY: 250,
// Size of the node
width: 100,
height: 100,
//sets the type of the shape as HTML
shape: {
type: 'HTML',
content: '<div style="background:#6BA5D7;height:100%;width:100%;"><button type="button" style="width:100px"> Button</button></div>',
}
}];
// initialize Diagram component
function App() {
return (
<DiagramComponent
id="container"
width={'100%'}
height={'600px'}
// Add node
nodes={node}
// render initialized Diagram
/>
);
}
const root = ReactDOM.createRoot(document.getElementById('diagram'));
root.render(<App />);Functional Content Template.
To render an HTML node using a functional template, we define a function that returns the template string. Within this function, modifications can be made based on the node’s ID.
The following code illustrates how to render an HTML node using the function and manipulate its content dynamically.
import * as React from "react";
import * as ReactDOM from "react-dom";
import {
DiagramComponent
} from "@syncfusion/ej2-react-diagrams";
// A node is created and stored in nodes array.
let node = [{
id: 'node1',
// Position of the node
offsetX: 250,
offsetY: 250,
// Size of the node
width: 100,
height: 100,
//sets the type of the shape as HTML
shape: {
type: 'HTML',
content: diagramTemplate.bind(this)
}
},
{
id: 'node2',
// Position of the node
offsetX: 450,
offsetY: 250,
// Size of the node
width: 100,
height: 100,
//sets the type of the shape as HTML
shape: {
type: 'HTML',
content: diagramTemplate.bind(this)
}
}];
function diagramTemplate(obj) {
let background = '#6BA5D7';
let name = 'button';
if (obj.id === 'node1') {
background = 'yellow';
name = 'YELLOW';
} else {
name = 'BLUE';
}
return (<div style={{ background: background, height: "100%", width: "100%" }}>
<input type="button" id="button" style={{ width: "100%" }} value={name} />
</div>);
}
// initialize Diagram component
function App() {
return (
<DiagramComponent
id="container"
width={'100%'}
height={'600px'}
// Add node
nodes={node}
// render initialized Diagram
/>
);
}
const root = ReactDOM.createRoot(document.getElementById('diagram'));
root.render(<App />);import * as React from "react";
import * as ReactDOM from "react-dom";
import {
NodeModel,
DiagramComponent
} from "@syncfusion/ej2-react-diagrams";
// A node is created and stored in nodes array.
let node: NodeModel[] = [{
id:'node1',
// Position of the node
offsetX: 250,
offsetY: 250,
// Size of the node
width: 100,
height: 100,
//sets the type of the shape as HTML
shape: {
type: 'HTML',
content: diagramTemplate.bind(this)
}
},
{
id: 'node2',
// Position of the node
offsetX: 450,
offsetY: 250,
// Size of the node
width: 100,
height: 100,
//sets the type of the shape as HTML
shape: {
type: 'HTML',
content: diagramTemplate.bind(this)
}
}];
function diagramTemplate(obj: any) {
let background = '#6BA5D7';
let name = 'button';
if (obj.id === 'node1') {
background = 'yellow';
name = 'YELLOW';
} else {
name = 'BLUE';
}
return (<div style={{ background: background, height: "100%", width: "100%" }}>
<input type="button" id="button" style={{ width: "100%" }} value={name} />
</div>);
}
// initialize Diagram component
function App() {
return (
<DiagramComponent
id="container"
width={'100%'}
height={'600px'}
// Add node
nodes={node}
// render initialized Diagram
/>
);
}
const root = ReactDOM.createRoot(document.getElementById('diagram'));
root.render(<App />);HTML Node With Node Template
To render html node with nodeTemplate we need to define the nodeTemplate in the html file and assign it to the nodeTemplate property of the diagram. The following code illustrates how to render html node with nodeTemplate.
import * as React from "react";
import * as ReactDOM from "react-dom";
import { DiagramComponent } from "@syncfusion/ej2-react-diagrams";
// A node is created and stored in nodes array.
let node = [{
id: 'node1',
// Position of the node
offsetX: 250,
offsetY: 250,
// Size of the node
width: 100,
height: 100,
//sets the type of the shape as HTML
shape: {
type: 'HTML',
}
},{
id: 'node2',
// Position of the node
offsetX: 450,
offsetY: 250,
// Size of the node
width: 100,
height: 100,
//sets the type of the shape as HTML
shape: {
type: 'HTML',
}
}];
// initialize Diagram component
function App() {
return (
<div>
<script id="nodeTemplate">
<div style={{ background: "yellow", height: "100%", width: "100%" }}>
<input type="button" id="button" style={{ width: "100%" }} value="${id}" />
</div>
</script>
<DiagramComponent id="container" width={'100%'} height={'600px'}
// Add node
nodes={node}
nodeTemplate='#nodeTemplate'
/>
</div>);
}
const root = ReactDOM.createRoot(document.getElementById('diagram'));
root.render(<App />);import * as React from "react";
import * as ReactDOM from "react-dom";
import {
NodeModel,
DiagramComponent
} from "@syncfusion/ej2-react-diagrams";
// A node is created and stored in nodes array.
let node: NodeModel[] = [{
id: 'node1',
// Position of the node
offsetX: 250,
offsetY: 250,
// Size of the node
width: 100,
height: 100,
//sets the type of the shape as HTML
shape: {
type: 'HTML',
}
},{
id: 'node2',
// Position of the node
offsetX: 450,
offsetY: 250,
// Size of the node
width: 100,
height: 100,
//sets the type of the shape as HTML
shape: {
type: 'HTML',
}
}];
// initialize Diagram component
function App() {
return (
<div>
<script id="nodeTemplate">
<div style=>
<input type="button" id="button" style= value="${id}" />
</div>
</script>
<DiagramComponent
id="container"
width={'100%'}
height={'600px'}
// Add node
nodes={node}
nodeTemplate='#nodeTemplate'
// render initialized Diagram
/>
</div>
);
}
const root = ReactDOM.createRoot(document.getElementById('diagram'));
root.render(<App />);Functional NodeTemplate
We can define a function which returns a template string and assign it directly to the nodeTemplate property of diagram.
Refer the code example below.
import * as React from "react";
import * as ReactDOM from "react-dom";
import { DiagramComponent } from "@syncfusion/ej2-react-diagrams";
// A node is created and stored in nodes array.
let node = [{
id: 'node1',
// Position of the node
offsetX: 250,
offsetY: 250,
// Size of the node
width: 100,
height: 100,
//sets the type of the shape as HTML
shape: {
type: 'HTML',
}
},{
id: 'node2',
// Position of the node
offsetX: 450,
offsetY: 250,
// Size of the node
width: 100,
height: 100,
//sets the type of the shape as HTML
shape: {
type: 'HTML',
}
}];
function diagramTemplate(obj) {
let background = '#6BA5D7';
let name = 'button';
if (obj.id === 'node1') {
background = 'yellow';
name = 'YELLOW';
} else {
name = 'BLUE';
}
return (<div style={{ background: background, height: "100%", width: "100%" }}>
<input type="button" id="button" style={{ width: "100%" }} value={name} />
</div>);
}
// initialize Diagram component
function App() {
return (<DiagramComponent id="container" width={'100%'} height={'600px'}
// Add node
nodes={node}
nodeTemplate={diagramTemplate.bind(this)}/>);
}
const root = ReactDOM.createRoot(document.getElementById('diagram'));
root.render(<App />);import * as React from "react";
import * as ReactDOM from "react-dom";
import {
NodeModel,
DiagramComponent
} from "@syncfusion/ej2-react-diagrams";
// A node is created and stored in nodes array.
let node: NodeModel[] = [{
id: 'node1',
// Position of the node
offsetX: 250,
offsetY: 250,
// Size of the node
width: 100,
height: 100,
//sets the type of the shape as HTML
shape: {
type: 'HTML',
}
},{
id: 'node2',
// Position of the node
offsetX: 450,
offsetY: 250,
// Size of the node
width: 100,
height: 100,
//sets the type of the shape as HTML
shape: {
type: 'HTML',
}
}];
function diagramTemplate(obj: any) {
let background = '#6BA5D7';
let name = 'button';
if (obj.id === 'node1') {
background = 'yellow';
name = 'YELLOW';
} else {
name = 'BLUE';
}
return (<div style={{ background: background, height: "100%", width: "100%" }}>
<input type="button" id="button" style={{ width: "100%" }} value={name} />
</div>);
}
// initialize Diagram component
function App() {
return (
<DiagramComponent
id="container"
width={'100%'}
height={'600px'}
// Add node
nodes={node}
nodeTemplate={diagramTemplate.bind(this)}
// render initialized Diagram
/>
);
}
const root = ReactDOM.createRoot(document.getElementById('diagram'));
root.render(<App />);Native Nodes
Native nodes allow you to embed SVG elements directly into your diagrams, providing scalable vector graphics with precise control over visual appearance. This approach is ideal for custom icons, complex shapes, and high-quality graphics that scale well at any size.
To create a native node, set the shape property to native and provide SVG content through the content property.
import * as React from "react";
import * as ReactDOM from "react-dom";
import { DiagramComponent } from "@syncfusion/ej2-react-diagrams";
// A node is created and stored in nodes array.
let node = [{
// Position of the node
offsetX: 250,
offsetY: 250,
// Size of the node
width: 150,
height: 100,
//sets the type of the shape as Native
shape: {
type: 'Native',
scale: 'Stretch',
content:
'<g xmlns="http://www.w3.org/2000/svg"> <g transform="translate(1 1)"><g> <path style="fill:#61443C;" d="M61.979,435.057c2.645-0.512,5.291-0.853,7.936-1.109c-2.01,1.33-4.472, 1.791-6.827,1.28 C62.726,435.13,62.354,435.072,61.979,435.057z"/><path style="fill:#61443C;"d="M502.469,502.471h-25.6c0.163-30.757-20.173-57.861-49.749-66.304 c-5.784-1.581-11.753-2.385-17.749-2.389c-2.425-0.028-4.849,0.114-7.253,0.427c1.831-7.63,2.747-15.45,2.731-23.296 c0.377-47.729-34.52-88.418-81.749-95.317c4.274-0.545,8.577-0.83,12.885-0.853c25.285,0.211,49.448,10.466,67.167,28.504 c17.719,18.039,27.539,42.382,27.297,67.666c0.017,7.846-0.9,15.666-2.731,23.296c2.405-0.312,4.829-0.455,7.253-0.427 C472.572,434.123,502.783,464.869,502.469,502.471z"/> </g> <path style="fill:#8B685A;" d="M476.869,502.471H7.536c-0.191-32.558,22.574-60.747,54.443-67.413 c0.375,0.015,0.747,0.072,1.109,0.171c2.355,0.511,4.817,0.05,6.827-1.28c1.707-0.085,3.413-0.171,5.12-0.171 c4.59,0,9.166,0.486,13.653,1.451c2.324,0.559,4.775,0.147,6.787-1.141c2.013-1.288,3.414-3.341,3.879-5.685 c7.68-39.706,39.605-70.228,79.616-76.117c4.325-0.616,8.687-0.929,13.056-0.939c13.281-0.016,26.409,2.837,38.485,8.363 c3.917,1.823,7.708,3.904,11.349,6.229c2.039,1.304,4.527,1.705,6.872,1.106c2.345-0.598,4.337-2.142,5.502-4.264 c14.373-25.502,39.733-42.923,68.693-47.189h0.171c47.229,6.899,82.127,47.588,81.749,95.317c0.017,7.846-0.9,15.666-2.731,23.296 c2.405-0.312,4.829-0.455,7.253-0.427c5.996,0.005,11.965,0.808,17.749,2.389C456.696,444.61,477.033,471.713,476.869,502.471 L476.869,502.471z"/> <path style="fill:#66993E;" d="M502.469,7.537c0,0-6.997,264.96-192.512,252.245c-20.217-1.549-40.166-5.59-59.392-12.032 c-1.365-0.341-2.731-0.853-4.096-1.28c0,0-0.597-2.219-1.451-6.144c-6.656-34.048-25.088-198.997,231.765-230.144 C485.061,9.159,493.595,8.22,502.469,7.537z"/> <path style="fill:#9ACA5C;" d="M476.784,10.183c-1.28,26.197-16.213,238.165-166.827,249.6 c-20.217-1.549-40.166-5.59-59.392-12.032c-1.365-0.341-2.731-0.853-4.096-1.28c0,0-0.597-2.219-1.451-6.144 C238.363,206.279,219.931,41.329,476.784,10.183z"/> <path style="fill:#66993E;" d="M206.192,246.727c-0.768,3.925-1.365,6.144-1.365,6.144c-1.365,0.427-2.731,0.939-4.096,1.28 c-21.505,7.427-44.293,10.417-66.987,8.789C21.104,252.103,8.816,94.236,7.621,71.452c-0.085-1.792-0.085-2.731-0.085-2.731 C222.747,86.129,211.653,216.689,206.192,246.727z"/> <path style="fill:#9ACA5C;" d="M180.336,246.727c-0.768,3.925-1.365,6.144-1.365,6.144c-1.365,0.427-2.731,0.939-4.096,1.28 c-13.351,4.412-27.142,7.359-41.131,8.789C21.104,252.103,8.816,94.236,7.621,71.452 C195.952,96.881,185.541,217.969,180.336,246.727z"/> </g> <g> <path d="M162.136,426.671c3.451-0.001,6.562-2.08,7.882-5.268s0.591-6.858-1.849-9.298l-8.533-8.533 c-3.341-3.281-8.701-3.256-12.012,0.054c-3.311,3.311-3.335,8.671-0.054,12.012l8.533,8.533 C157.701,425.773,159.872,426.673,162.136,426.671L162.136,426.671z"/> <path d="M292.636,398.57c3.341,3.281,8.701,3.256,12.012-0.054c3.311-3.311,3.335-8.671,0.054-12.012l-8.533-8.533 c-3.341-3.281-8.701-3.256-12.012,0.054s-3.335,8.671-0.054,12.012L292.636,398.57z"/> <path d="M296.169,454.771c-3.341-3.281-8.701-3.256-12.012,0.054c-3.311,3.311-3.335,8.671-0.054,12.012l8.533,8.533 c3.341,3.281,8.701,3.256,12.012-0.054c3.311-3.311,3.335-8.671,0.054-12.012L296.169,454.771z"/> <path d="M386.503,475.37c3.341,3.281,8.701,3.256,12.012-0.054c3.311-3.311,3.335-8.671,0.054-12.012l-8.533-8.533 c-3.341-3.281-8.701-3.256-12.012,0.054c-3.311,3.311-3.335,8.671-0.054,12.012L386.503,475.37z"/> <path d="M204.803,409.604c2.264,0.003,4.435-0.897,6.033-2.5l8.533-8.533c3.281-3.341,3.256-8.701-0.054-12.012 c-3.311-3.311-8.671-3.335-12.012-0.054l-8.533,8.533c-2.44,2.44-3.169,6.11-1.849,9.298 C198.241,407.524,201.352,409.603,204.803,409.604z"/> <path d="M332.803,443.737c2.264,0.003,4.435-0.897,6.033-2.5l8.533-8.533c3.281-3.341,3.256-8.701-0.054-12.012 c-3.311-3.311-8.671-3.335-12.012-0.054l-8.533,8.533c-2.44,2.44-3.169,6.11-1.849,9.298 C326.241,441.658,329.352,443.737,332.803,443.737z"/> <path d="M341.336,366.937c2.264,0.003,4.435-0.897,6.033-2.5l8.533-8.533c3.281-3.341,3.256-8.701-0.054-12.012 c-3.311-3.311-8.671-3.335-12.012-0.054l-8.533,8.533c-2.44,2.44-3.169,6.11-1.849,9.298 C334.774,364.858,337.885,366.937,341.336,366.937z"/> <path d="M164.636,454.771l-8.533,8.533c-2.188,2.149-3.055,5.307-2.27,8.271c0.785,2.965,3.1,5.28,6.065,6.065 c2.965,0.785,6.122-0.082,8.271-2.27l8.533-8.533c3.281-3.341,3.256-8.701-0.054-12.012 C173.337,451.515,167.977,451.49,164.636,454.771L164.636,454.771z"/> <path d="M232.903,429.171l-8.533,8.533c-2.188,2.149-3.055,5.307-2.27,8.271c0.785,2.965,3.1,5.28,6.065,6.065 c2.965,0.785,6.122-0.082,8.271-2.27l8.533-8.533c3.281-3.341,3.256-8.701-0.054-12.012 C241.604,425.915,236.243,425.89,232.903,429.171L232.903,429.171z"/> <path d="M384.003,409.604c2.264,0.003,4.435-0.897,6.033-2.5l8.533-8.533c3.281-3.341,3.256-8.701-0.054-12.012 c-3.311-3.311-8.671-3.335-12.012-0.054l-8.533,8.533c-2.44,2.44-3.169,6.11-1.849,9.298 C377.441,407.524,380.552,409.603,384.003,409.604z"/> <path d="M70.77,463.304l-8.533,8.533c-2.188,2.149-3.055,5.307-2.27,8.271s3.1,5.28,6.065,6.065 c2.965,0.785,6.122-0.082,8.271-2.27l8.533-8.533c3.281-3.341,3.256-8.701-0.054-12.012 C79.47,460.048,74.11,460.024,70.77,463.304L70.77,463.304z"/> <path d="M121.97,446.238l-8.533,8.533c-2.188,2.149-3.055,5.307-2.27,8.271c0.785,2.965,3.1,5.28,6.065,6.065 c2.965,0.785,6.122-0.082,8.271-2.27l8.533-8.533c3.281-3.341,3.256-8.701-0.054-12.012 C130.67,442.981,125.31,442.957,121.97,446.238L121.97,446.238z"/> <path d="M202.302,420.638c-1.6-1.601-3.77-2.5-6.033-2.5c-2.263,0-4.433,0.899-6.033,2.5l-8.533,8.533 c-2.178,2.151-3.037,5.304-2.251,8.262c0.786,2.958,3.097,5.269,6.055,6.055c2.958,0.786,6.111-0.073,8.262-2.251l8.533-8.533 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c3.858-2.519,6.531-6.493,7.408-11.017c7.793-40.473,43.043-69.838,84.258-70.192c16.045-0.002,31.757,4.582,45.283,13.212 c4.01,2.561,8.897,3.358,13.512,2.205C256.422,375.165,260.36,372.163,262.694,368.017L262.694,368.017z"/> </g></g>',
},
}];
// initialize Diagram component
function App() {
return (<DiagramComponent id="container" width={'100%'} height={'600px'}
// Add node
nodes={node}/>);
}
const root = ReactDOM.createRoot(document.getElementById('diagram'));
root.render(<App />);import * as React from "react";
import * as ReactDOM from "react-dom";
import {
NodeModel,
DiagramComponent
} from "@syncfusion/ej2-react-diagrams";
// A node is created and stored in nodes array.
let node: NodeModel[] = [{
// Position of the node
offsetX: 250,
offsetY: 250,
// Size of the node
width: 150,
height: 100,
//sets the type of the shape as Native
shape: {
type: 'Native',
scale: 'Stretch',
content:
'<g xmlns="http://www.w3.org/2000/svg"> <g transform="translate(1 1)"><g> <path style="fill:#61443C;" d="M61.979,435.057c2.645-0.512,5.291-0.853,7.936-1.109c-2.01,1.33-4.472, 1.791-6.827,1.28 C62.726,435.13,62.354,435.072,61.979,435.057z"/><path style="fill:#61443C;"d="M502.469,502.471h-25.6c0.163-30.757-20.173-57.861-49.749-66.304 c-5.784-1.581-11.753-2.385-17.749-2.389c-2.425-0.028-4.849,0.114-7.253,0.427c1.831-7.63,2.747-15.45,2.731-23.296 c0.377-47.729-34.52-88.418-81.749-95.317c4.274-0.545,8.577-0.83,12.885-0.853c25.285,0.211,49.448,10.466,67.167,28.504 c17.719,18.039,27.539,42.382,27.297,67.666c0.017,7.846-0.9,15.666-2.731,23.296c2.405-0.312,4.829-0.455,7.253-0.427 C472.572,434.123,502.783,464.869,502.469,502.471z"/> </g> <path style="fill:#8B685A;" d="M476.869,502.471H7.536c-0.191-32.558,22.574-60.747,54.443-67.413 c0.375,0.015,0.747,0.072,1.109,0.171c2.355,0.511,4.817,0.05,6.827-1.28c1.707-0.085,3.413-0.171,5.12-0.171 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},
}];
// initialize Diagram component
function App() {
return (
<DiagramComponent
id="container"
width={'100%'}
height={'600px'}
// Add node
nodes={node}
/>
);
}
const root = ReactDOM.createRoot(document.getElementById('diagram'));
root.render(<App />);NOTE
Similar to HTML nodes, native nodes cannot be exported to image formats due to canvas rendering limitations. Fill colors of native nodes can be overridden by inline SVG styles or fill attributes specified in the SVG template.
SVG Content Alignment and Scaling
Stretch and align the svg content anywhere but within the node boundary.
Control how SVG content appears within node boundaries using the same scaling principles as image nodes. The scale property determines how SVG content fits within the node bounds.
The following tables illustrates all the possible scale options for the node.
| Values | Images |
|---|---|
| None |  |
| Meet |  |
| Slice |  |
| Stretch |  |
Basic Shapes
Basic shapes provide a comprehensive set of predefined geometric forms commonly used in diagrams, flowcharts, and technical drawings. These shapes offer consistency and quick deployment for standard diagram elements.
To create Basic shapes, set the type property to basic and choose from the available built-in shapes. For rounded rectangles, use the cornerRadius property to specify the radius.
The following code example illustrates how to create a basic shape.
import * as React from "react";
import * as ReactDOM from "react-dom";
import { DiagramComponent } from "@syncfusion/ej2-react-diagrams";
// A node is created and stored in nodes array.
let node = [{
// Position of the node
offsetX: 250,
offsetY: 250,
// Size of the node
width: 100,
height: 100,
//sets the type of the shape as Basic
shape: {
type: 'Basic',
shape: 'Rectangle',
cornerRadius: 10
},
}];
// initialize Diagram component
function App() {
return (<DiagramComponent id="container" width={'100%'} height={'600px'}
// Add node
nodes={node}/>);
}
const root = ReactDOM.createRoot(document.getElementById('diagram'));
root.render(<App />);import * as React from "react";
import * as ReactDOM from "react-dom";
import {
NodeModel,
DiagramComponent
} from "@syncfusion/ej2-react-diagrams";
// A node is created and stored in nodes array.
let node: NodeModel[] = [{
// Position of the node
offsetX: 250,
offsetY: 250,
// Size of the node
width: 100,
height: 100,
//sets the type of the shape as Basic
shape: {
type: 'Basic',
shape: 'Rectangle',
cornerRadius: 10
},
}];
// initialize Diagram component
function App() {
return (
<DiagramComponent
id="container"
width={'100%'}
height={'600px'}
// Add node
nodes={node}
/>
);
}
const root = ReactDOM.createRoot(document.getElementById('diagram'));
root.render(<App />);NOTE
By default, the
shapeproperty of the node is set as basic.
Default property for shape is Rectangle.
NOTE
When the
shapeis not set for a basic shape, it is considered as a rectangle.
The list of basic shapes are as follows.
The basic shapes library includes rectangles, ellipses, triangles, polygons, stars, and many other geometric forms suitable for various diagramming needs.
Path Shapes
Path shapes provide ultimate flexibility for creating custom geometric forms using SVG path data. This approach allows you to define any shape imaginable through precise path coordinates and commands.
To create a Path node, set the shape property to path and define the geometry through the data property using standard SVG path syntax.
import * as React from "react";
import * as ReactDOM from "react-dom";
import { DiagramComponent } from "@syncfusion/ej2-react-diagrams";
// A node is created and stored in nodes array.
let node = [{
// Position of the node
offsetX: 250,
offsetY: 250,
// Size of the node
width: 100,
height: 100,
//sets the type of the shape as Path
shape: {
type: 'Path',
data: 'M35.2441,25 L22.7161,49.9937 L22.7161,0.00657536 L35.2441,25 z M22.7167,25 L-0.00131226,25 M35.2441,49.6337 L35.2441,0.368951 M35.2441,25 L49.9981,25'
},
}];
// initialize Diagram component
function App() {
return (<DiagramComponent id="container" width={'100%'} height={'600px'}
// Add node
nodes={node}/>);
}
const root = ReactDOM.createRoot(document.getElementById('diagram'));
root.render(<App />);import * as React from "react";
import * as ReactDOM from "react-dom";
import {
NodeModel,
DiagramComponent
} from "@syncfusion/ej2-react-diagrams";
// A node is created and stored in nodes array.
let node: NodeModel[] = [{
// Position of the node
offsetX: 250,
offsetY: 250,
// Size of the node
width: 100,
height: 100,
//sets the type of the shape as Path
shape: {
type: 'Path',
data: 'M35.2441,25 L22.7161,49.9937 L22.7161,0.00657536 L35.2441,25 z M22.7167,25 L-0.00131226,25 M35.2441,49.6337 L35.2441,0.368951 M35.2441,25 L49.9981,25'
},
}];
// initialize Diagram component
function App() {
return (
<DiagramComponent
id="container"
width={'100%'}
height={'600px'}
// Add node
nodes={node}
/>
);
}
const root = ReactDOM.createRoot(document.getElementById('diagram'));
root.render(<App />);Flow Shapes
Flow shapes are specialized elements designed for process modeling, workflow diagrams, and business process documentation. These standardized shapes follow common flowchart conventions and enhance diagram readability.
To create flow shapes, set the shape type to flow and specify the desired flow shape variant. The default flow shape is process.
import * as React from "react";
import * as ReactDOM from "react-dom";
import { DiagramComponent } from "@syncfusion/ej2-react-diagrams";
// A node is created and stored in nodes array.
let node = [{
// Position of the node
offsetX: 250,
offsetY: 250,
// Size of the node
width: 100,
height: 100,
//sets the type of the shape as Flow
shape: {
type: 'Flow',
shape: 'Document'
},
}];
// initialize Diagram component
function App() {
return (<DiagramComponent id="container" width={'100%'} height={'600px'}
// Add node
nodes={node}/>);
}
const root = ReactDOM.createRoot(document.getElementById('diagram'));
root.render(<App />);import * as React from "react";
import * as ReactDOM from "react-dom";
import {
NodeModel,
DiagramComponent
} from "@syncfusion/ej2-react-diagrams";
// A node is created and stored in nodes array.
let node: NodeModel[] = [{
// Position of the node
offsetX: 250,
offsetY: 250,
// Size of the node
width: 100,
height: 100,
//sets the type of the shape as Flow
shape: {
type: 'Flow',
shape: 'Document'
},
}];
// initialize Diagram component
function App() {
return (
<DiagramComponent
id="container"
width={'100%'}
height={'600px'}
// Add node
nodes={node}
/>
);
}
const root = ReactDOM.createRoot(document.getElementById('diagram'));
root.render(<App />);The list of flow shapes are as follows.
