electron(titleBar): 添加窗口状态IPC通信与桥接器函数

electron/main/index.ts

@@ -843,6 +843,14 @@ app.whenReady().then(() => {
   });
 });
 
+ipcMain.handle('window:state', () => {
+  const win = BrowserWindow.getFocusedWindow()
+  if (!win) return 'normal'
+  if (win.isMaximized()) return 'maximized'
+  if (win.isMinimized()) return 'minimized'
+  return 'normal'
+})
+
 // New window example arg: new windows url
 // ipcMain.handle('open-win', (_, arg) => {
 //   const childWindow = new BrowserWindow({