Different Types of Shapes in Angular Diagram Component
25 Aug 202524 minutes to read
The Angular 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 { Component, ViewEncapsulation, ViewChild } from '@angular/core';
import { TextModel } from '@syncfusion/ej2-diagrams';
import { DiagramModule, DiagramComponent, ShapeStyleModel } from '@syncfusion/ej2-angular-diagrams';
@Component({
imports: [
DiagramModule
],
providers: [ ],
standalone: true,
selector: "app-container",
template: `<ejs-diagram #diagram id="diagram" width="100%" height="580px">
<e-nodes>
<e-node id='node1' [offsetX]=150 [offsetY]=150 [width]=100 [height]=100 [shape]='shape' [style]='style'></e-node>
</e-nodes>
</ejs-diagram>`,
encapsulation: ViewEncapsulation.None
})
export class AppComponent {
@ViewChild('diagram')
public diagram?: DiagramComponent;
public style: ShapeStyleModel = { fill: 'none' }
public shape: TextModel = {
type: 'Text',
content: 'Text Element'
};
}import { bootstrapApplication } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import 'zone.js';
bootstrapApplication(AppComponent).catch((err) => console.error(err));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 { Component, ViewEncapsulation, ViewChild } from '@angular/core';
import { ImageElement } from '@syncfusion/ej2-diagrams';
import { DiagramModule, DiagramComponent } from '@syncfusion/ej2-angular-diagrams';
@Component({
imports: [
DiagramModule
],
providers: [ ],
standalone: true,
selector: "app-container",
template: `<ejs-diagram #diagram id="diagram" width="100%" height="580px">
<e-nodes>
<e-node id='node1' [offsetX]=150 [offsetY]=150 [width]=100 [height]=100 [shape]='shape'></e-node>
</e-nodes>
</ejs-diagram>`,
encapsulation: ViewEncapsulation.None
})
export class AppComponent {
@ViewChild('diagram')
public diagram?: DiagramComponent;
public shape: ImageElement = {
type: 'Image',
source: 'https://ej2.syncfusion.com/demos/src/diagram/employees/image16.png'
} as unknown as ImageElement;
}import { bootstrapApplication } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import 'zone.js';
bootstrapApplication(AppComponent).catch((err) => console.error(err));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 { Component, ViewEncapsulation, ViewChild } from '@angular/core';
import { ImageElement } from '@syncfusion/ej2-diagrams';
import { DiagramModule, DiagramComponent } from '@syncfusion/ej2-angular-diagrams';
@Component({
imports: [
DiagramModule
],
providers: [ ],
standalone: true,
selector: "app-container",
template: `<ejs-diagram #diagram id="diagram" width="100%" height="580px" >
<e-nodes>
<e-node id='node1' [offsetX]=150 [offsetY]=150 [width]=100 [height]=100 [shape]='shape'></e-node>
</e-nodes>
</ejs-diagram>`,
encapsulation: ViewEncapsulation.None
})
export class AppComponent {
@ViewChild('diagram')
public diagram?: DiagramComponent;
public shape: ImageElement = {
type: 'Image',
source: 'data:image/gif;base64,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'
} as unknown as ImageElement;
}import { bootstrapApplication } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import 'zone.js';
bootstrapApplication(AppComponent).catch((err) => console.error(err));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.
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 determines how images fit within node boundaries, while the align property controls positioning.
import { Component, ViewEncapsulation, ViewChild } from '@angular/core';
import { ImageElement } from '@syncfusion/ej2-diagrams';
import { DiagramModule, DiagramComponent } from '@syncfusion/ej2-angular-diagrams';
@Component({
imports: [
DiagramModule
],
providers: [ ],
standalone: true,
selector: "app-container",
template: `<ejs-diagram #diagram id="diagram" width="100%" height="580px">
<e-nodes>
<e-node id='node1' [offsetX]=250 [offsetY]=250 [height]=100 [width]=300 [shape]='shape'></e-node>
</e-nodes>
</ejs-diagram>`,
encapsulation: ViewEncapsulation.None
})
export class AppComponent {
@ViewChild('diagram')
public diagram?: DiagramComponent;
public shape: ImageElement = {
type: 'Image',
source: 'https://ej2.syncfusion.com/demos/src/diagram/employees/image16.png',
scale: 'Stretch',
align: 'None',
} as unknown as ImageElement;
}import { bootstrapApplication } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import 'zone.js';
bootstrapApplication(AppComponent).catch((err) => console.error(err));Available scaling options:
| Scale Value | Description | Visual Result |
|---|---|---|
| None | Original image size, may be clipped |  |
| Meet | Scales to fit entirely within node bounds |  |
| Slice | Scales to fill node, may crop image |  |
| Stretch | Stretches to fill node exactly |  |
NOTE
Combine the align property with scale settings to achieve precise image positioning within your nodes.
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
Define HTML content directly within the content property for simple, self-contained HTML elements.
import { Component, ViewEncapsulation, ViewChild } from '@angular/core';
import { HtmlModel } from '@syncfusion/ej2-diagrams';
import { DiagramModule, DiagramComponent } from '@syncfusion/ej2-angular-diagrams';
@Component({
imports: [
DiagramModule
],
providers: [ ],
standalone: true,
selector: "app-container",
template: `<ejs-diagram #diagram id="diagram" width="100%" height="580px" >
<e-nodes>
<e-node id='node1' [offsetX]=150 [offsetY]=150 [width]=100 [height]=100 [shape]='shape'></e-node>
</e-nodes>
</ejs-diagram>`,
encapsulation: ViewEncapsulation.None
})
export class AppComponent {
@ViewChild('diagram')
public diagram?: DiagramComponent;
public shape: HtmlModel = {
content:'<div style="background:#6BA5D7;height:100%;width:100%;"><button type="button" style="width:100px"> Button</button></div>',
type:'HTML'
};
}import { bootstrapApplication } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import 'zone.js';
bootstrapApplication(AppComponent).catch((err) => console.error(err));HTML Node with Node Template
For complex HTML structures, use the nodeTemplate approach. Define your template in the HTML file and reference it through the diagram’s nodeTemplate property.
import { Component, ViewEncapsulation, ViewChild } from '@angular/core';
import { HtmlModel } from '@syncfusion/ej2-diagrams';
import { DiagramModule, DiagramComponent } from '@syncfusion/ej2-angular-diagrams';
@Component({
imports: [
DiagramModule
],
providers: [ ],
standalone: true,
selector: "app-container",
template: `<ejs-diagram #diagram id="diagram" width="100%" height="580px" >
<ng-template #nodeTemplate let-data >
<ng-container>
<div style="background:#6BA5D7;height:100%;width:100%;"><input width="100%" style="width: 100px" type = "button" [value]= "data.id" ></div>
</ng-container>
</ng-template>
<e-nodes>
<e-node id='Node' [offsetX]=150 [offsetY]=150 [height]=100 [width]=100 [shape]='shape'></e-node>
</e-nodes>
</ejs-diagram>`,
encapsulation: ViewEncapsulation.None
})
export class AppComponent {
@ViewChild('diagram')
public diagram?: DiagramComponent;
public shape: HtmlModel = {
type:'HTML'
};
}import { bootstrapApplication } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import 'zone.js';
bootstrapApplication(AppComponent).catch((err) => console.error(err));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 { Component, ViewEncapsulation, ViewChild } from '@angular/core';
import { NodeModel, NativeModel } from '@syncfusion/ej2-diagrams';
import { DiagramModule, DiagramComponent, ShapeStyleModel } from '@syncfusion/ej2-angular-diagrams';
@Component({
imports: [
DiagramModule
],
providers: [ ],
standalone: true,
selector: "app-container",
template: `<ejs-diagram #diagram id="diagram" width="100%" height="580px" >
<e-nodes>
<e-node id='node1' [offsetX]=150 [offsetY]=150 [width]=150 [height]=100 [shape]='shape'></e-node>
</e-nodes>
</ejs-diagram>`,
encapsulation: ViewEncapsulation.None
})
export class AppComponent {
@ViewChild('diagram')
public diagram?: DiagramComponent;
public shape: NativeModel = {
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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type:'Native'
};
}import { bootstrapApplication } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import 'zone.js';
bootstrapApplication(AppComponent).catch((err) => console.error(err));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
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.
SVG scaling options:
| Scale Value | Description | Visual Result |
|---|---|---|
| None | Original SVG size, may be clipped |  |
| Meet | Scales SVG to fit entirely within bounds |  |
| Slice | Scales SVG to fill node, may crop content |  |
| Stretch | Stretches SVG to fill node exactly |  |
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.
import { Component, ViewEncapsulation, ViewChild } from '@angular/core';
import { BasicShapeModel } from '@syncfusion/ej2-diagrams';
import { DiagramModule, DiagramComponent } from '@syncfusion/ej2-angular-diagrams';
@Component({
imports: [
DiagramModule
],
providers: [ ],
standalone: true,
selector: "app-container",
template: `<ejs-diagram #diagram id="diagram" width="100%" height="580px">
<e-nodes>
<e-node id='node1' [offsetX]=150 [offsetY]=150 [width]=100 [height]=100 [shape]='shape'></e-node>
</e-nodes>
</ejs-diagram>`,
encapsulation: ViewEncapsulation.None
})
export class AppComponent {
@ViewChild('diagram')
public diagram?: DiagramComponent;
public shape: BasicShapeModel = {
type: 'Basic',
shape: 'Rectangle',
cornerRadius: 10
};
}import { bootstrapApplication } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import 'zone.js';
bootstrapApplication(AppComponent).catch((err) => console.error(err));NOTE
The shape property defaults to basic when not specified. If no specific shape is defined for a basic shape node, it defaults to rectangle.
Available basic shapes:
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 { Component, ViewEncapsulation, ViewChild } from '@angular/core';
import { PathModel } from '@syncfusion/ej2-diagrams';
import { DiagramModule, DiagramComponent } from '@syncfusion/ej2-angular-diagrams';
@Component({
imports: [
DiagramModule
],
providers: [ ],
standalone: true,
selector: "app-container",
template: `<ejs-diagram #diagram id="diagram" width="100%" height="580px">
<e-nodes>
<e-node id='node1' [offsetX]=150 [offsetY]=150 [width]=100 [height]=100 [shape]='shape'></e-node>
</e-nodes>
</ejs-diagram>`,
encapsulation: ViewEncapsulation.None
})
export class AppComponent {
@ViewChild('diagram')
public diagram?: DiagramComponent;
public shape: PathModel = {
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'
};
}import { bootstrapApplication } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import 'zone.js';
bootstrapApplication(AppComponent).catch((err) => console.error(err));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 { Component, ViewEncapsulation, ViewChild } from '@angular/core';
import { FlowShapeModel } from '@syncfusion/ej2-diagrams';
import { DiagramModule, DiagramComponent } from '@syncfusion/ej2-angular-diagrams';
@Component({
imports: [
DiagramModule
],
providers: [ ],
standalone: true,
selector: "app-container",
template: `<ejs-diagram #diagram id="diagram" width="100%" height="580px">
<e-nodes>
<e-node id='node1' [offsetX]=150 [offsetY]=150 [width]=100 [height]=100 [shape]='shape'></e-node>
</e-nodes>
</ejs-diagram>`,
encapsulation: ViewEncapsulation.None
})
export class AppComponent {
@ViewChild('diagram')
public diagram?: DiagramComponent;
public shape: FlowShapeModel = {
type: 'Flow',
shape: 'Document'
};
}import { bootstrapApplication } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import 'zone.js';
bootstrapApplication(AppComponent).catch((err) => console.error(err));The list of flow shapes are as follows.
