Electron

通信

• 渲染进程 to 主要进程

// 渲染发送
ipcRenderer.invoke('apiName', args);

// 主进程监听
ipcMain.handle('apiName', () => {});

• 主要进程 to 渲染进程

// 主要进程发送
bw.webContents.send('apiName', {});

// 渲染进程接受
ipcRenderer.on('apiName', () => {

})

• 渲染进程 to 渲染进程

// 渲染进程
ipcRenderer.invoke('emit', { eventName: 'api' });

// 主要监听
ipcMain.handler('emit', {
  bw.webContents.send(eventName, args);
});

// 渲染进程接受
ipcRenderer.on('api', () => {})

browserWindow

const mainWindow = new BrowserWindow({
  height: 600,
  webPreferences: {
    preload: path.join(__dirname, "hybrid", "preload", "index.js"),
    sandbox: false,
    webSecurity: false,
    contextIsolation: false,
    nodeIntegration: true,
  },
  width: 800,
});
mainWindow.loadFile(path.join(__dirname, "../index.html"));
mainWindow.webContents.openDevTools(); // 调试面板

addBrowserView

bw.addBrowserView(bv);
bv.setBounds({ x: 0, y: 0, width: 300, height: 300 });
bv.loadFile()

destroyBrowserView

// bw.close();
bw.removeBrowserView(bv);

功能

截图

import * as fsJepack from 'fs-jetpack';
bw.webContents.capturePage(finalRect).then(async (img) => {
  const data = img.toPNG();
  fsJepack.write('path', data);
})

护眼

bw.webContents.executeJavaScript(
  `
    //  创建 style
    document.getElementsByTagName('head').item(0).appendChild(style);
    var div = document.createElement("div");
    div.id="eyeProtection";
    div.className="EyeproModeDom EyeproModeShow";
    document.body.appendChild(div);
    document.body.insertBefore(div, document.body.firstElementChild);
  `
).catch(() => {})

system

获取音量

  import * as loudness from 'loudness';
  const mute = await loudness.getMuted();
  const volume = await loudness.getVolume();
  loudness.setVolume(volume);

网络

import * as si from 'systeminformation';
si.inetChecksite(url)
si.networkInterfaces()

网络状态

import {net} from 'electron';
net.isOnline()

cpu usage

  import * as os from 'os';
  const cpus = os.cpus();
  for (let cpu in cpus) {
    let times = cpus[cpu].times;
    user += times.user;
    nice += times.nice;
    sys += times.sys;
    idle += times.idle;
    irq += times.irq;
  }
  total += user + nice + sys + idle + irq;

session

网络请求拦截

  session.defaultSession.webRequest.onBeforeSendHeaders(
    (detail, callback) => {
      detail.requestHeaders.__test__ = "test";
      callback({ requestHeaders: detail.requestHeaders });
    }
  );

插件

• 主进程注册

//  设置 webPreferences.plugin = true
// .dll win32
// .plugin darwin
 app.commandLine.appendSwitch(
    "register-pepper-plugins",
    "../plugin/ppapi/zpplogger.dll;application/x-ppapi-zpplogger"
  );

• 渲染进程调用

function createEmbed (param){
  var moduleEl = document.createElement('embed');
  moduleEl.setAttribute('name', 'nacl_module');
  moduleEl.setAttribute('mode', 'stream');
  moduleEl.setAttribute('src', 'win/stream.nmf');
  moduleEl.setAttribute('type', 'application/x-ppapi-testlogger');
  moduleEl.addEventListener('message', param.handler, true);
  return moduleEl;
}
this.embed = createEmbed()
this.embed.postMessage(JSON.stringify({"method": action, "parameters": data }))

唤起

app.setAsDefaultProtocolClient('scheme');