README.md

@iftek/react-viewer

• react image/pdf viewer.
• Fork from react-viewer
• Breaking change 3.x to 4.x : props images to files.

Introduction

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

Installation

react >= 16.8.0 | react-dom >= 16.8.0

npm install @iftek/react-viewer --save

Usage

import * as React from 'react';
import Viewer from '@iftek/react-viewer';

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

  return (
    <div>
      <button onClick={() => { setVisible(true); } }>show</button>
      <Viewer
      visible={visible}
      onClose={() => { setVisible(false); } }
      files={[{src: '', 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={() => {}}
      files={[{src: ''}]}
    />
  )
}

export default Viewer

Server Side rest..

I'm sorry, ssr is not currently supported in 4.x, it will be fixed in 5.0.

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
files	FileDecorator[]	[]	file source array	true
activeIndex	number	0	active file 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	(activeFile: FileDecorator, index: number) => void	-	callback when file 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

FileDecorator

props	type	default	description	required
src	string	-	file source	true
alt	string	-	file description	false
downloadUrl	string	-	file 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