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A pdf viewer

![pdf-viewer.png][]


See [sourcecodes in github](https://github.com/lemon-clown/web-play-ground/tree/master/packages/react-pdf-viewer#readme) to get more information.


# Usage

  * Install
    ```shell
    yarn add @lemon-clown-wpg/react-pdf-viewer
    # you aslo should install peerDependencies if the terminal prompts for a warnning
    ```

  * Use in React project
    ```typescript
    import React from 'react'
    import ReactDOM from 'react-dom'
    import { PDFViewer } from '@lemon-clown-wpg/react-pdf-viewer'
    import '@lemon-clown-wpg/react-pdf-viewer/lib/esm/index.css'


    const pdfStyle: React.CSSProperties = {
      width: '100vw',
      height: '100vh',
    }


    // index.tsx
    ReactDOM.render(
      <PDFViewer
        style={ pdfStyle }
        fileUrl="/files/demo.pdf"
      />
      , document.getElementById('root')
    )
    ```

# Options

   property               | required  | type            | default
  :-----------------------|:---------:|:----------------|:-------------
   fileUrl                | `true`    | `string`        |
   fileName               | `false`   | `string`        | `/(?:[^/\\]*[/\\])?([^/\\]+?)(?:#[\s\S]*)?$/.exec(fileUrl)[1] || ''`
   direction              | `false`   | `'ltr' | 'rtr'` | `'ltr'`
   MIN_SCALING            | `false`   | `number`        | 0.50
   MAX_SCALING            | `false`   | `number`        | 4.00
   ZOOM_STEP              | `false`   | `number`        | 0.10
   selectOptions          | `false`   | `number[]`      | [ 0.50, 0.75, 1.00, 1.25, 1.50, 2.00, 3.00, 4.00 ]
   onDocumentLoadError    | `false`   | `Function`      | `undefined`
   onDocumentLoadSuccess  | `false`   | `Function`      | `undefined`

  * `fileUrl`: url of pdf file
  * `fileName`: filename of pdf file
  * `direction`: the text direction
  * `MIN_SCALING`: minimum scaling
  * `MAX_SCALING`: maximum scaling
  * `ZOOM_STEP`: the size of the zoom step
  * `scaleOptions`: Options for the drop-down box
  * `onDocumentLoadError`: Function called in case of an error while loading a document.
    - `onDocumentLoadError?: (error: Error) => void`
  * `onDocumentLoadSuccess`: Function called when the document is successfully loaded.
    - `onDocumentLoadSuccess?: (pdf: pdfjs.PDFDocumentProxy) => void`



[pdf-viewer.png]: https://raw.githubusercontent.com/lemon-clown/web-play-ground/master/packages/react-pdf-viewer/doc/screenshots/pdf-viewer.png