react-viewer-thumbnail

react image viewer. add thumbnail support.

Introduction

base on react-viewer

Because I can`t be comfortable using viewerjs in react, so I created react-viewer to replace it.

Features

defualt features from viewerjs beforeShow will be called before render. u you alter the image src. such as thumnail.

Installation

react >= 16.8.0 | react-dom >= 16.8.0

npm install react-viewer --save

Usage

import * as React from 'react';
import Viewer from 'react-viewer';

function App() {
  const [ visible, setVisible ] = React.useState(false);
  const [files, setFiles] = React.useState([])

  React.useEffect(() => {
    //.. load files fromn api
  })

  const images = (files || []).map((f: any) => ({ src: f.uriThumbnail, alt: f.uri }))

  return (
    <div>
      <button onClick={() => { setVisible(true); } }>show</button>
      <Viewer
      visible={visible}
      onClose={() => { setVisible(false); } }
      images={[{src: '', alt: ''}]}
      beforeShow= {(activeImage: ImageDecorator) =>  {
        return {
          ...activeImage,
          src: activeImage.alt
        }
      }}
      />
    </div>
  );
}

Server Side (NextJS)

import React, { FC } from 'react'
import dynamic from 'next/dynamic'

const ReactViewer = dynamic(
  () => import('react-viewer'),
  { ssr: false }
)

export const Viewer: FC = () => {
  return (
    <ReactViewer
      visible={true}
      onClose={() => {}}
      images={[{src: ''}]}
    />
  )
}

export default Viewer

Server Side rest..

I'm sorry, ssr is not currently supported in 3.x, it will be fixed in 4.0.

Props

| props | type | default | description | required | |--------------|--------------|---------|-----------------------------|----------| | visible | string | false | Viewer visible | true | | onClose | function | - | Specify a function that will be called when Visible close | true | | images | ImageDecorator[] | [] | image source array | true | | activeIndex | number | 0 | active image index | false | | zIndex | number | 1000 | Viewer css z-index | false | | container | HTMLElement | null | set parent node(inline mode) | false | | drag | boolean | true | whether to drag image | false | | attribute | boolean | true | whether to show image attribute | false | | zoomable | boolean | true | whether to show 'zoom' button | false | | rotatable | boolean | true | whether to show 'rotate' button | false | | scalable | boolean | true | whether to show 'scale' button | false | | onMaskClick | (e) => void | - | callback function when mask is clicked | false | | downloadable | boolean | false | whether to show 'download' | false | | noClose | boolean | false | to not render close button | false | | noNavbar | boolean | false | to not render the navbar | false | | noToolbar | boolean | false | to not render the toolbar | false | | noImgDetails | boolean | false | to not render image detail (WxH) | false | | noFooter | boolean | false | to not render the entire footer | false | | changeable | boolean | true | wheather to show change button | false | | customToolbar | (defaultToolbarConfigs: ToolbarConfig[]) => ToolbarConfig[] | - | customer toolbar | false | | zoomSpeed | number | 0.05 | zoom speed | false | | defaultSize | ViewerImageSize | - | default image size | false | | defaultImg | viewerdefaultimg | - | if load img failed, show default img | false | | disableKeyboardSupport | boolean | false | disable keyboard support | false | | noResetZoomAfterChange | boolean | false | preserve zoom after image change | false | | noLimitInitializationSize | boolean | false | no limit image initialization size | false | | defaultScale | number | 1 | set default scale | false | | onChange | (activeImage: ImageDecorator, index: number) => void | - | callback when image change | false | | loop | boolean | true | whether enable image loop | false | | disableMouseZoom | boolean | false | whether disable mouse zoom | false | | downloadInNewWindow | boolean | false | whether to download in a new window | false | | className | string | - | customized CSS class | false | | showTotal | boolean | true | whether to display the total number and range | false | | totalName | string | 'of' | total image separator name | false | | maxScale | number | - | maximum scaling | false | | minScale | number | 0.1 | minimum scaling | false | | exportFileName | string | 'exportFile' | customize download's filename | false |

ImageDecorator

| props | type | default | description | required | |-------------|--------------|---------|-----------------------------|----------| | src | string | - | image source | true | | alt | string | - | image description | false | | downloadUrl | string | - | image downlaod url | false | | defaultSize | ViewerImageSize | - | image size | false |

ViewerImageSize

| props | type | default | description | required | |-------------|--------------|---------|-----------------------------|----------| | width | number | - | image width | true | | height | number | - | image height | true |

ViewerDefaultImg

| props | type | default | description | required | |-------------|--------------|---------|-----------------------------|----------| | src | number | - | image source | true | | width | number | - | image width | false | | height | number | - | image height | false |

ToolbarConfig

| props | type | default | description | required | |-------------|--------------|---------|-----------------------------|----------| | key | string | - | tool key | true | | render | React.ReactNode | - | tool render | false | | onClick | function | - | callback function when action is clicked | false |

Keyboard support

• Esc: Close viewer.
• ←: View the previous image.
• →: View the next image.
• ↑: Zoom in the image.
• ↓: Zoom out the image.
• Ctrl + 1: Reset the image.
• Ctrl + ←: Rotate left the image.
• Ctrl + →: Rotate right the image.

License

MIT