ReactJS Blueprint ResizeSensor2 Component

BlueprintJS is a React-based UI toolkit for the web. This library is very optimized and popular for building interfaces that are complex data-dense for desktop applications. ResizeSensor2 Component provides a way for users to provides them a resize event for its single DOM element child. We can use the following approach in ReactJS to use the ReactJS Blueprint ResizeSensor2 Component.

ResizeSensor2 Props:

• children: It is used to denote a single child, and it must be an element and not a string or fragment.
• observeParents: It is used to indicate that all parent DOM elements of the container will also be observed for size changes if this is set to true.
• onResize: It is a callback that is triggered when the wrapped element resizes.
• targetRef: If we want to attach a ref to the child yourself when rendering it, you must pass the same value here.

Creating React Application And Installing Module:

• Step 1: Create a React application using the following command:

  
  
  

  npx create-react-app foldername

• Step 2: After creating your project folder i.e. foldername, move to it using the following command:

  cd foldername

• Step 3: After creating the ReactJS application, Install the required module using the following command:

  npm install @blueprintjs/core
  npm install @blueprintjs/popover2

Project Structure: It will look like the following.

Project Structure

Example: Now write down the following code in the App.js file. Here, App is our default component where we have written our code.

App.js

import React from 'react'
import '@blueprintjs/core/lib/css/blueprint.css';
import { ResizeSensor2 } from "@blueprintjs/popover2";

function App() {

    return (
        <div style={{
            display: 'block', width: 400, padding: 30
        }}>
            <h4>ReactJS Blueprint ResizeSensor2 Component</h4>
            <ResizeSensor2 onResize={(entries) =>
                console.log(entries.map(
                e =>`${e.contentRect.width} x ${e.contentRect.height}`))}>
                <div style={{ width: 400, backgroundColor: 'lightgrey',
                height: 100 }}>
                    Component Dimesion: 400 X 100
                </div>
            </ResizeSensor2>
        </div >
    );
}

export default App;

Step to Run Application: Run the application using the following command from the root directory of the project:

npm start

Output: Now open your browser and go to http://localhost:3000/, you will see the following output:

Reference: https://blueprintjs.com/docs/#popover2-package/resize-sensor2