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ReactJS Blueprint ResizeSensor2 Component

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  • Difficulty Level : Expert
  • Last Updated : 10 Jul, 2021

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


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