react-image-magnify

A responsive React image zoom component for desktop and mobile.

Supports hover intnet, long-press gesture, and fade transitions.

Demo

Desktop

Touch

Status

Installation

npm install --save react-image-magnify

Usage

import { ReactImageMagnifyTouch } from 'react-image-magnify';
...
<ReactImageMagnifyTouch {...{
    smallImage: {
        alt: 'Wristwatch by Ted Baker London',
        isFluidWidth: true,
        src: watchImg1200,
        srcSet: [
            `${watchImg355} 355w`,
            `${watchImg481} 481w`,
            `${watchImg584} 584w`,
            `${watchImg687} 687w`,
            `${watchImg770} 770w`,
            `${watchImg861} 861w`,
            `${watchImg955} 955w`,
            `${watchImg1033} 1033w`,
            `${watchImg1112} 1112w`,
            `${watchImg1192} 1192w`,
            `${watchImg1200} 1200w`,
        ].join(', ');,
        sizes: '(min-width: 480px) 30vw, 80vw'
    },
    largeImage: {
        alt: '',
        src: watchImg1200,
        width: 1200,
        height: 1800
    }
}} />
...

See more usage examples in the example project.

If you would like more information on responsive images, please try these resources:
https://cloudfour.com/thinks/responsive-images-101-definitions/
https://bitsofco.de/the-srcset-and-sizes-attributes/

Props API

Desktop and Touch

Prop	Type	Required	Default	Description
smallImage	Object	Yes		Small image information. See Small Image below.
largeImage	Object	Yes		Large image information. See Large Image below.
className	String	No		CSS class applied to root container element.
style	Object	No		Style applied to root container element.
fadeDurationInMs	Number	No	300	Milliseconds duration of magnified image fade in/fade out.
imageClassName	String	No		CSS class applied to small image element.
imageStyle	Object	No		Style applied to small image element.
enlargedImageContainerClassName	String	No		CSS class applied to enlarged image container element.
enlargedImageContainerStyle	Object	No		Style applied to enlarged image container element.
enlargedImageClassName	String	No		CSS class applied to enlarged image element.
enlargedImageStyle	Object	No		Style applied to enlarged image element.

Desktop Only

Prop	Type	Required	Default	Description
hoverDelayInMs	Number	No	250	Milliseconds to delay hover trigger.
hoverOffDelayInMs	Number	No	150	Milliseconds to delay hover-off trigger.
lensStyle	Object	No		Style applied to tinted lens.
enlargedImagePosition	String	No	beside	Enlarged image position. Can be 'beside' or 'over'.

Touch Only

Prop	Type	Required	Default	Description
isActivatedOnTouch	Boolean	No	false	Activate magnification immediately on touch. May impact scrolling.
pressDuration	Number	No	500	Milliseconds to delay long-press activation (long touch).
pressMoveThreshold	Number	No	5	Pixels of movement allowed during long-press activation.
enlargedImagePosition	String	No	over	Enlarged image position. Can be 'beside' or 'over'.

Small Image

{
    alt: String,
    isFluidWidth: Boolean, (default false)
    src: String, (required)
    srcSet: String,
    sizes: String,
    width: Number, (required if isFluidWidth is not set)
    height: Number (required if isFluidWidth is not set)
}

Large Image

{
    alt: String,
    src: String, (required)
    srcSet: String,
    sizes: String,
    width: Number, (required)
    height: Number (required)
}

Support

Please open an issue.

Example Project

git clone https://github.com/ethanselzer/react-image-magnify.git
cd react-image-magnify/example
npm install
npm start

If your default browser does not start automatically, open a new browser window and go to localhost:3000

Navigate to /touch/fluid or /pointer/fluid for fluid width examples. Navigate to /touch for fixed width.

Development

git clone https://github.com/ethanselzer/react-image-magnify.git
cd react-image-magnify
npm install
npm run #See available commands

The Example Project may be used in development of react-image-magnify. At this time, the command npm run prepublsih must be run from the root of the project each time you want your changes to be reflected in the example.

If you experience ReferenceError: Unknown plugin "'transform-es2015-modules-umd'" when running prepublish you may try running prepublish-cjs.

Contributing

Please contribute using Github Flow. Create a branch, add commits, and open a pull request.

License

MIT