/react-doc-viewer

Primary LanguageTypeScriptApache License 2.0Apache-2.0

react-doc-viewer

Contents



Current Renderable File Types

Extension MIME Type Available
bmp image/bmp ✓
doc application/msword ✓
docx application/vnd.openxmlformats-officedocument.wordprocessingml.document ✓
htm text/htm ✓
html text/html ✓
jpg image/jpg ✓
jpeg image/jpeg ✓
pdf application/pdf ✓
png image/png ✓
ppt application/vnd.ms-powerpoint ✓
pptx applicatiapplication/vnd.openxmlformats-officedocument.presentationml.presentation ✓
tiff image/tiff ✓
txt text/plain ✓
xls application/vnd.ms-excel ✓
xlsx application/vnd.openxmlformats-officedocument.spreadsheetml.sheet ✓


Installation

Core

 npm i react-doc-viewer
 # or
 yarn add react-doc-viewer

Usage

Warning - By default the component height will expand and contract to the current loaded file. The width will expand to fill the parent.



Basic

DocViewer requires at least an array of document objects to function. Each document object must have a uri to a file, either a url that returns a file or a local file.

import DocViewer from "react-doc-viewer";

function App() {
  const docs = [
    { uri: "https://url-to-my-pdf.pdf" },
    { uri: require("./example-files/pdf.pdf") }, // Local File
  ];

  return <DocViewer documents={docs} />;
}

Included Renderers

To use the included renderers. DocViewerRenderers is an Array of all the included renderers.

import DocViewer, { DocViewerRenderers } from "react-doc-viewer";

<DocViewer
  pluginRenderers={DocViewerRenderers}
  {/* ... */}
/>;

Or you can import individual renderers.

import DocViewer, { PDFRenderer, PNGRenderer } from "react-doc-viewer";

<DocViewer
  pluginRenderers={[PDFRenderer, PNGRenderer]}
  {/* ... */}
/>;


Custom Renderer

To create a custom renderer, that will just exist for your project.

import React from "react";
import DocViewer from "react-doc-viewer";

const MyCustomPNGRenderer: DocRenderer = ({
  mainState: { currentDocument },
}) => {
  if (!currentDocument) return null;

  return (
    <div id="my-png-renderer">
      <img id="png-img" src={currentDocument.fileData as string} />
    </div>
  );
};

MyCustomPNGRenderer.fileTypes = ["png", "image/png"];
MyCustomPNGRenderer.weight = 1;

And supply it to DocViewer > pluginRenderers inside an Array.

import DocViewer, { DocViewerRenderers } from "react-doc-viewer";

<DocViewer
  pluginRenderers={[MyCustomPNGRenderer]}
  documents={
    [
      // ...
    ]
  }
/>;


Custom File Loader

If you need to prevent the actual loading of the file by react-doc-viewer. you can decorate your custom renderer with a callback to do as you wish. e.g. Load the file yourself in an iFrame.

MyCustomPNGRenderer.fileLoader = ({
  documentURI,
  signal,
  fileLoaderComplete,
}) => {
  myCustomFileLoaderCode().then(() => {
    // Whenever you have finished you must call fileLoaderComplete() to remove the loading animation
    fileLoaderComplete();
  });
};


Themed

You can provide a theme object with one or all of the available properties.

<DocViewer
  documents={docs}
  theme={{
    primary: "#5296d8",
    secondary: "#ffffff",
    tertiary: "#5296d899",
    text_primary: "#ffffff",
    text_secondary: "#5296d8",
    text_tertiary: "#00000099",
    disableThemeScrollbar: false,
  }}
/>

Styling

Any styling applied to the <DocViewer> component, is directly applied to the main div container.

- CSS Class

<DocViewer documents={docs} className="my-doc-viewer-style" />

- CSS Class Default Override

Each component / div already has a DOM id that can be used to style any part of the document viewer.

#react-doc-viewer #header-bar {
  background-color: #faf;
}

- React Inline

<DocViewer documents={docs} style={{width: 500, height: 500}} />

- StyledComponent

import styled from "styled-components";
//...
<MyDocViewer documents={docs} />;
//...
const MyDocViewer = styled(DocViewer)`
  border-radius: 10px;
`;

Config

You can provide a config object, which configures parts of the component as required.

<DocViewer documents={docs} config={{
 header: {
  disableHeader: false,
  disableFileName: false,
  retainURLParams: false
 }
}} />


Contributing

Creating a Renderer Plugin

Step 1 - Create a new folder inside src/plugins.

e.g. src/plugins/jpg

Inside this folder, create a Renderer React Typescript file.

e.g. index.tsx

Step 2 - Inside JPGRenderer, export a functional component of type DocRenderer

import React from "react";
import { DocRenderer } from "../../types";

// Be sure that Renderer correctly uses type DocRenderer
const JPGRenderer: DocRenderer = ({ mainState: { currentDocument } }) => {
  if (!currentDocument) return null;

  return (
    <div id="jpg-renderer">
      <img id="jpg-img" src={currentDocument.fileData as string} />
    </div>
  );
};

export default JPGRenderer;

// List the MIME types that this renderer will respond to
JPGRenderer.fileTypes = ["jpg", "jpeg", "image/jpg", "image/jpeg"];

// If you have more than one renderer for the same MIME type, use weight. higher is more preferable.
// Included renderers have a weight of zero
JPGRenderer.weight = 1;

If you are creating a new renderer, also update src/plugins/index.ts with an import to your new renderer file, and Export it as part of the DocViewerRenderers Array.

// ...
import JPGRenderer from "./jpg";

export const DocViewerRenderers = [
  // ...
  JPGRenderer,
];


Overriding Header Component

You can pass a callback function to config.header.overrideComponent that returns a React Element. The function's parameters will be populated and usable, this function will also be re-called whenever the mainState updates. Parameters include the state object from the main component, and document navigation functions for previousDocument and nextDocument.

Example:

const myHeader: IHeaderOverride = (state, previousDocument, nextDocument) => {
    if (!state.currentDocument || state.config?.header?.disableFileName) {
      return null;
    }

    return (
      <>
        <div>{state.currentDocument.uri || ""}</div>
        <div>
          <button
            onClick={previousDocument}
            disabled={state.currentFileNo === 0}
          >
            Previous Document
          </button>
          <button
            onClick={nextDocument}
            disabled={state.currentFileNo >= state.documents.length - 1}
          >
            Next Document
          </button>
        </div>
      </>
    );
  };

<DocViewer
  pluginRenderers={DocViewerRenderers}
  documents={
    {
      /**/
    }
  }
  config={{
    header: {
      overrideComponent: myHeader;
      },
    },
  }
/>

API

DocViewer props

name type
documents IDocument[]
className? string
style? React.CSSProperties
config? IConfig
theme? ITheme
pluginRenderers? DocRenderer[]

IDocument

name type
uri string
fileType? string
fileData? `string

IConfig

name type
header? IHeaderConfig

IHeaderConfig

name type
disableHeader? boolean
disableFileName? boolean
retainURLParams? boolean
overrideComponent? IHeaderOverride

IHeaderOverride () => ReactElement<any, any> | null

name type
state IMainState
previousDocument () => void
nextDocument () => void
returns `ReactElement<any, any>

ITheme

name type
primary? string
secondary? string
tertiary? string
text_primary? string
text_secondary? string
text_tertiary? string
disableThemeScrollbar? boolean

DocRenderer extends React.FC<DocRendererProps>

name type
fileTypes string[]
weight number
fileLoader? FileLoaderFunction `

FileLoaderFunction

(props: FileLoaderFuncProps) => void

FileLoaderFuncProps

name type
documentURI string
signal AbortSignal
fileLoaderComplete FileLoaderComplete

FileLoaderComplete

name type
fileReader FileReader

DocRendererProps

name type
mainState IMainState

IMainState

name type
currentFileNo number
documents IDocument[]
documentLoading? boolean
currentDocument? IDocument
rendererRect? DOMRect
config? IConfig