electron: Persist last window size and position between sessions

Author: rafaellehmkuhl

electron/main.ts

@@ -1,6 +1,7 @@
 import { app, BrowserWindow, protocol, screen } from 'electron'
 import { join } from 'path'
 
+import store from './services/config-store'
 import { setupNetworkService } from './services/network'
 
 export const ROOT_PATH = {
@@ -13,16 +14,23 @@ let mainWindow: BrowserWindow | null
  * Create electron window
  */
 function createWindow(): void {
-  const { width, height } = screen.getPrimaryDisplay().workAreaSize
   mainWindow = new BrowserWindow({
     icon: join(ROOT_PATH.dist, 'pwa-512x512.png'),
     webPreferences: {
       preload: join(ROOT_PATH.dist, 'electron/preload.js'),
       contextIsolation: true,
       nodeIntegration: false,
     },
-    width,
-    height,
+    width: store.get('windowBounds')?.width ?? screen.getPrimaryDisplay().workAreaSize.width,
+    height: store.get('windowBounds')?.height ?? screen.getPrimaryDisplay().workAreaSize.height,
+    x: store.get('windowBounds')?.x ?? screen.getPrimaryDisplay().bounds.x,
+    y: store.get('windowBounds')?.y ?? screen.getPrimaryDisplay().bounds.y,
+  })
+
+  mainWindow.on('close', () => {
+    const windowBounds = mainWindow!.getBounds()
+    const { x, y, width, height } = windowBounds
+    store.set('windowBounds', { x, y, width, height })
   })
 
   // Test active push message to Renderer-process.

electron/services/config-store.ts

@@ -0,0 +1,55 @@
+import Store from 'electron-store'
+
+const electronStoreSchema = {
+  windowBounds: {
+    type: 'object',
+    properties: {
+      width: {
+        type: 'number',
+      },
+      height: {
+        type: 'number',
+      },
+      x: {
+        type: 'number',
+      },
+      y: {
+        type: 'number',
+      },
+    },
+  },
+}
+
+/**
+ * Electron store schema
+ * Stores configuration data
+ */
+export interface ElectronStoreSchema {
+  /**
+   * Window bounds
+   */
+  windowBounds:
+    | undefined
+    | {
+        /**
+         * Last known window width
+         */
+        width: number
+        /**
+         * Last known window height
+         */
+        height: number
+        /**
+         * Last known window x position
+         */
+        x: number
+        /**
+         * Last known window y position
+         */
+        y: number
+      }
+}
+
+const store = new Store<ElectronStoreSchema>({ schema: electronStoreSchema })
+
+export default store