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react-image-magnify

★ 662 Open GitHub ↗

A responsive image zoom component designed for shopping sites.

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# react-image-magnify

A responsive React image zoom component for touch and mouse.

Designed for shopping site product detail.

Features Include:
* In-place and side-by-side image enlargement
* Positive or negative space guide lens options
* Interaction hint
* Configurable enlarged image dimensions
* Optional enlarged image external render
* Hover intent
* Long-press gesture
* Fade transitions
* Basic react-slick carousel support

## Status
[![CircleCI](https://img.shields.io/circleci/project/github/ethanselzer/react-image-magnify.svg)](https://circleci.com/gh/ethanselzer/react-image-magnify/tree/master)
[![Coverage Status](https://coveralls.io/repos/github/ethanselzer/react-image-magnify/badge.svg?branch=master)](https://coveralls.io/github/ethanselzer/react-image-magnify?branch=master)
[![npm](https://img.shields.io/npm/v/react-image-magnify.svg)](https://www.npmjs.com/package/react-image-magnify)
[![License](https://img.shields.io/badge/license-MIT-blue.svg)](https://opensource.org/licenses/MIT)

## Demo
Please visit the [react-image-magnify demo site](https://ethanselzer.github.io/react-image-magnify/#/)

Experiment with react-image-magnify [live on CodePen](https://codepen.io/ethanselzer/full/oePMNY/).
Use the Change View button to select editing mode or for different layout options.
Use the Fork button to save your changes.

## Installation

```sh
npm install react-image-magnify
```

## Usage
If you are upgrading from v1x to v2x, please see the [release notes](https://github.com/ethanselzer/react-image-magnify/releases/tag/v2.0.0).

```JavaScript
import ReactImageMagnify from 'react-image-magnify';
...
<ReactImageMagnify {...{
    smallImage: {
        alt: 'Wristwatch by Ted Baker London',
        isFluidWidth: true,
        src: watchImg300
    },
    largeImage: {
        src: watchImg1200,
        width: 1200,
        height: 1800
    }
}} />
...
```
See more usage examples in the [example project](https://github.com/ethanselzer/react-image-magnify/tree/master/example).

## Required Props
| Prop                        | Type   | Default | Description                                                |
|-----------------------------|--------|---------|--------------------------------|
| smallImage                  | Object | N/A     | Small image information. See [Small Image](#small-image) below.|
| largeImage                  | Object | N/A     | Large image information. See [Large Image](#large-image) below.|
## Optional Styling Props
| Prop                        | Type   | Default | Description                                                |
|-----------------------------|--------|---------|---------------------------------|
| className                   | String | N/A     | CSS class applied to root container element.               |
| style                       | Object | N/A     | Style applied to root container element.                   |
| imageClassName              | String | N/A     | CSS class applied to small image element.                  |
| imageStyle                  | Object | N/A     | Style applied to small image element.                      |
| lensStyle                   | Object | N/A   | Style applied to tinted lens.                              |
| enlargedImageContainerClassName| String |  N/A       | CSS class applied to enlarged image container element.     |
| enlargedImageContainerStyle | Object | N/A     | Style applied to enlarged image container element.         |
| enlargedImageClassName      | String | N/A     | CSS class applied to enlarged image element.               |
| enlargedImageStyle          | Object | N/A     | Style applied to enlarged image element.|
## Optional Interaction Props
| Prop                        | Type | Default | Description                                                |
|-----------------------------|--------|-------|---------------------------------|
| fadeDurationInMs            | Number | 300     | Milliseconds duration of magnified image fade in/fade out. |
| hoverDelayInMs              | Number | 250   | Milliseconds to delay hover trigger.                       |
| hoverOffDelayInMs           | Number | 150   | Milliseconds to delay hover-off trigger.                   |
| isActivatedOnTouch          | Boolean| false   | Activate magnification immediately on touch. May impact scrolling.|
| pressDuration               | Number | 500     | Milliseconds to delay long-press activation (long touch).  |
| pressMoveThreshold          | Number | 5       | Pixels of movement allowed during long-press activation.   |
## Optional Behavioral Props
| Prop                        | Type | Default | Description                                                |
|-----------------------------|--------|-------|---------------------------------|
| enlargedImagePosition       | String |beside (over for touch)| Enlarged image placement. Can be 'beside' or 'over'.|
| enlargedImageContainerDimensions | Object | {width: '100%', height: '100%'} | Specify enlarged image container dimensions as an object with width and height properties. Values may be expressed as a percentage (e.g. '150%') or a number (e.g. 200). Percentage is based on small image dimension. Number is pixels. Not applied when enlargedImagePosition is set to 'over', the default for touch input. |
| enlargedImagePortalId | String | N/A | Render enlarged image into an HTML element of your choosing by specifying the target element id. Requires React v16. Ignored for touch input by default - see isEnlargedImagePortalEnabledForTouch.|
| isEnlargedImagePortalEnabledForTouch | Boolean | false | Specify portal rendering should be honored for touch input. |
| hintComponent               |Function|(Provided)| Reference to a component class or functional component. A Default is provided.|
| shouldHideHintAfterFirstActivation| Boolean | true   | Only show hint until the first interaction begins.         |
| isHintEnabled               | Boolean| false   | Enable hint feature. |
| hintTextMouse               | String |Hover to Zoom| Hint text for mouse. |
| hintTextTouch               | String |Long-Touch to Zoom| Hint text for touch. |
| shouldUsePositiveSpaceLens  | Boolean| false | Specify a positive space lens in place of the default negative space lens. |
| lensComponent  | Function | (Provided) | Specify a custom lens component. |

### Small Image
```
{
    src: String, (required)
    srcSet: String,
    sizes: String,
    width: Number, (required if isFluidWidth is not set)
    height: Number, (required if isFluidWidth is not set)
    isFluidWidth: Boolean, (default false)
    alt: String,
    onLoad: Function,
    onError: Function
}
```
For more information on responsive images, please try these resources:  
[Responsive Images 101](https://cloudfour.com/thinks/responsive-images-101-definitions/)  
[Responsive Images - The srcset and sizes Attributes](https://bitsofco.de/the-srcset-and-sizes-attributes/)

### Large Image
```
{
    src: String, (required)
    srcSet: String,
    sizes: String,
    width: Number, (required)
    height: Number, (required)
    alt: String, (defaults to empty string)
    onLoad: Function,
    onError: Function
}
```

## Support

Please [open an issue](https://github.com/ethanselzer/react-image-magnify/issues).

## Example Project
```ssh
git clone https://github.com/ethanselzer/react-image-magnify.git
cd react-image-magnify
npm install
npm run build
cd example
yarn
yarn start
```

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

## Development

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

The [Example Project](#example-project) may be used in development.

To rebuild the source automatically when changes are made, run `yarn run build-watch`.

## Contributing

Please contribute using [Github Flow](https://guides.github.com/introduction/flow/). Create a branch,
add commits, and [open a pull request](https://github.com/ethanselzer/react-image-magnify/compare/).

## Attribution

Thanks to the following community members for opening Issues and Pull Requests.

@damien916  
@colepatrickturner  
@andreatosatto90  
@nathanziarek  
@hombrew  
@smashercosmo  
@sk1e  
@vidries  
@ionutzp  
@sbloedel  
@spiderbites  
@Akarshit  
@eddy20vt  
@evannoronha  
@benjaminadk  
@nilsklimm  
@m4recek  
@yaser-ali-vp  
@carlgunderson  
@tojvan  
@kskonecka  
@Coriou

You are awesome! ✨💫

## License

MIT

react-image-magnify

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