electron-pdf-window-custompdf-private

electron-pdf-window

view PDF files in electron browser windows. this module adds support for viewing PDF files in electron BrowserWindows. it works even if you navigate to a PDF file from a site, or opening a PDF file in a new window. a PDFWindow instance is just a subclass of BrowserWindow so it can be used just like it.

const { app } = require('electron')
const PDFWindow = require('electron-pdf-window')

app.on('ready', () => {
  const win = new PDFWindow({
    width: 800,
    height: 600
  })

  win.loadURL('http://mozilla.github.io/pdf.js/web/compressed.tracemonkey-pldi-09.pdf')
})

install

$ npm i electron-pdf-window

usage

win = new PDFWindow([opts])

win is an electron BrowserWindow that has support for viewing PDF files.

PDFWindow.addSupport(win)

adds PDF viewing support for win, which is a BrowserWindow instance.

using from the renderer process

Using the PDFWindow class directly from the renderer process is not recommended, because electron doesn't support proper extending of their built-in classes. In order to add PDF support from the renderer, use the addSupport method.

const { BrowserWindow } = require('electron').remote
const PDFWindow = require('electron-pdf-window')

const win = new BrowserWindow({ width: 800, height: 600 })

PDFWindow.addSupport(win)

win.loadURL('file:///a/b/c.pdf')

test

$ npm test

项目定制处理

库内PDF_JS_PATH默认为_dirname 在本项目中 _dirname的地址并不全 因此会导致资源无法正常预览 因此修改了本地electron-pdf-window库内的地址加载方式 1.进入electron-pdf-window的index.js 将 const PDF_JS_PATH = path.join(__dirname, 'pdfjs', 'web', 'viewer.html') 更改为 const URL = require('url'); const isDev = require('electron-is-dev')

const app = isRenderer ? electron.remote.app : electron.app let PDF_JS_PATH = ''

if (isDev) { PDF_JS_PATH = URL.format({ pathname: path.resolve(path.resolve(__dirname), 'pdfjs', 'web', 'viewer.html') }) } else if (process.platform === 'darwin') { PDF_JS_PATH = path.join(app.getAppPath() + '/' + __dirname, 'pdfjs', 'web', 'viewer.html') //mac } else { PDF_JS_PATH = path.join(${app.getAppPath()}\\${__dirname}, 'pdfjs', 'web', 'viewer.html') //windows }

2.为了提高加载速度 ①index.js内 loadURL()方法 改为loadURL(url, options) { super.loadURL(file://${path.join(__dirname, 'pdfjs', 'web', 'viewer.html')}?file=${decodeURIComponent(url)}, options) } ②index.js内 第113行 改为 browserWindow.loadURL = function (url, options) { load.call(browserWindow, file://${PDF_JS_PATH}?file=${decodeURIComponent(url)}, options) }