react-viewer

react image viewer.

Introduction

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

Installation

npm install react-viewer --save

Usage

import * as React from 'react';
import Viewer from 'react-viewer';
import 'react-viewer/dist/index.css';

class App extends React.Component<any, any> {
  constructor() {
    super();

    this.state = {
      visible: false,
    };
  }

  render() {
    return (
      <div>
        <button onClick={() => { this.setState({ visible: !this.state.visible }); } }>show</button>
        <Viewer
        visible={this.state.visible}
        onClose={() => { this.setState({ visible: false }); } }
        images={[{src: '', alt: ''}]}
        />
      </div>
    );
  }
}

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 iamge change | 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