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addon/cashier/source/os/electron/.npmrc

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+electron_mirror=https://npmmirror.com/mirrors/electron/

addon/cashier/source/os/electron/main.js

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+
+//防止控制台中文乱码， package.json 中启动 "electron": "chcp 65001&&electron .", 
+//.npmrc 文件添加，防止安装electron卡死 electron_mirror=https://npmmirror.com/mirrors/electron/
+const { app, BrowserWindow, KeyboardEvent, ipcMain } = require('electron')
+//var globalShortcut = require('electron').globalShortcut;
+//const electronLocalshortcut = require('electron-localshortcut');
+const path = require('path')
+const url = require('url')
+
+let win, dev
+
+function createWindow() {
+    win = new BrowserWindow({
+        width: 1220,
+        height: 800,
+        icon: './static/logo.png', //
+		webPreferences: {
+		      contextIsolation: false,
+		      // eslint-disable-next-line no-undef
+		      preload:  path.join(__dirname, 'preload.js')
+		},
+        autoHideMenuBar: false, //隐藏菜单栏
+    })
+
+    if (app.isPackaged) {
+        let url = "http://localhost:8080"; // 本地启动的vue项目路径
+        win.loadURL(url);
+        return;
+        //加载本地文件 index.html
+        win.loadFile(path.join(__dirname, './index.html'))
+    } else {
+        let url = "http://localhost:8081"; // 本地启动的vue项目路径
+        win.loadURL(url);
+    }
+
+    win.webContents.on("before-input-event", (event, input) => {
+        var keys = ['F1','F2','F3','F4','F5','F6','F7','F8','F9','F10','F11','F12', 'Print', 'PageUp', 'PageDown' , 'Backspace', 'Delete' ];
+        if (input.type === 'keyUp' && keys.includes(input.key)) {  // && input.control && input.key.toLowerCase() === 'enter'
+            if (input.key === 'F12') {
+                dev = win.webContents.openDevTools();               
+            } else {
+                var js = "POS_HOTKEY_CALLBACK('" + input.alt + "','" + input.key.toUpperCase() + "');"
+                win.webContents.executeJavaScript(js);
+                console.log(input.key);
+            }
+        } else if (input.type === 'keyUp' && (input.key.toUpperCase() === 'X' && input.alt)){
+            var js = "POS_HOTKEY_CALLBACK('ALT','" + input.key.toUpperCase() + "');"
+            win.webContents.executeJavaScript(js);
+        }
+    });
+
+    //全局快捷键
+    // electronLocalshortcut.register(win, 'F12', () => {
+    //     // Open DevTools
+    // });
+    win.on('closed', () => {
+        win = null
+    })
+}
+
+app.on('ready', createWindow)
+app.on('window-all-closed', () => {
+    if (process.platform !== 'darwin') {
+        app.quit()
+    }
+})
+
+app.on('activate', () => {
+    if (win === null) {
+        createWindow()
+    }
+})
+
+//接收window.ipcRenderer.invoke('Print', '渲染进程')
+ipcMain.handle('Print', function (e, ...args) {
+    console.log('Print', args);
+})
+
+//接收window.ipcRenderer.send('Print', '渲染进程')
+ipcMain.on('Print', function (e, ...args) {
+    console.log('Print1', args );
+})

addon/cashier/source/os/electron/package.json

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+{
+	"name": "niushop-pos",
+	"version": "2.0",
+	"main": "main.js",
+	"scripts": {
+		"electron": "chcp 65001&&electron .", 
+		"debug": "electron --inspect-brk=5858 .",
+		"start": "wait-on tcp:8080 && electron .",
+		"build": "electron-packager ./ niushop-pos --plantform=win32 --arch=x64 --out niushop-pos --overwrite --icon=xdt.ico"
+	},
+	"author": "",
+	"license": "ISC",
+	"devDependencies": {
+		"electron": "^26.6.2",
+		"electron-packager": "^12.2.0"
+	},
+	"dependencies": {
+		"electron-localshortcut": "^3.2.1"
+	}
+}

addon/cashier/source/os/electron/preload.js

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+window.ipcRenderer = require('electron').ipcRenderer;