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πŸ” React image zoom component
TypeScript JavaScript CSS
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Latest commit 104c00a Aug 21, 2019

README.md

react-magnifier

React image zoom component

  • Simple and customizable
  • Supports touch screens
  • Allows different files for large image and magnifying glass (e.g. thumbnail and high-resolution image)

β†’ Demo

Demo

Usage

Install the package using NPM:

npm install react-magnifier

Add the component to your React application:

import Magnifier from "react-magnifier";
import yourImage from "./path/to/image";

export default function ExampleComponent() {
  return <Magnifier src={yourImage} width={500} />;
}

Configuration

Prop Type Default Description
src (required) String – URL/path of the large image
height Number/String 'auto' Image height (absolute or relative values possible)
width Number/String '100%' Image width (absolute or relative values possible)
className String '' Class which will be applied to the image wrapper
zoomImgSrc String – URL/path of the image inside the magnifying glass (if not specified, the large image will be used)
zoomFactor Number 1.5 Factor by which the zoom image will be scaled (based on the size of the large image)
mgWidth Number 150 Width of the magnifying glass in px
mgHeight Number 150 Height of the magnifying glass in px
mgBorderWidth Number 2 Border width of the magnifying glass in px
mgShape String 'circle' Shape of the magnifying glass (possible values: 'circle', 'square')
mgShowOverflow Boolean true Set this to false to cut off the magnifying glass at the image borders. When disabling mgShowOverflow, it's recommended that you also set all offsets to 0
mgMouseOffsetX Number 0 Horizontal offset of the magnifying glass in px when hovering with a mouse
mgMouseOffsetY Number 0 Vertical offset of the magnifying glass in px when hovering with a mouse
mgTouchOffsetX Number -50 Horizontal offset of the magnifying glass in px when dragging on a touch screen
mgTouchOffsetY Number -50 Vertical offset of the magnifying glass in px when dragging on a touch screen

Any other props will be passed down to the <img> element. This way, you can e.g. add an alt attribute to the image.

Custom styling

.magnifier {
  /* Styles for <div> around image and magnifying glass */
}

.magnifier-image {
  /* Styles for large image */
}

.magnifying-glass {
  /* Styles for magnifying glass */
}

Development

Requirements: Node.js, Yarn

  1. Clone this repository: git clone [repo-url]
  2. Install all dependencies: yarn install
  3. Run yarn start to generate the library bundle using Rollup and see the component in action using Storybook

Suggestions and contributions are always welcome! Please first discuss changes via issue before submitting a pull request.

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