update

electron/win-state.ts

@@ -0,0 +1,60 @@
+// src/main/win-state.ts
+import { app, screen, BrowserWindow } from 'electron'
+import { join } from 'path'
+import { readFileSync, writeFile } from 'fs'
+
+interface WinState {
+  x: number | null
+  y: number | null
+  width: number
+  height: number
+  maximized: boolean
+}
+
+const STATE_FILE = join(app.getPath('userData'), 'jrdm-win-state.json')
+const MIN_WIDTH = 900
+const MIN_HEIGHT = 600
+const DEFAULT_WIDTH = 1200
+const DEFAULT_HEIGHT = 800
+
+function parseJson(str: string): WinState | null {
+  try { return JSON.parse(str) }
+  catch { return null }
+}
+
+function getLastState(): WinState {
+  try {
+    const raw = readFileSync(STATE_FILE, 'utf-8')
+    const state = parseJson(raw)
+    if (state) {
+      const display = screen.getPrimaryDisplay().workArea
+      if (state.x != null && (state.x < 0 || state.x > display.width - 100)) {
+        state.x = null; state.y = null
+      }
+      if (state.y != null && (state.y < 0 || state.y > display.height - 100)) {
+        state.x = null; state.y = null
+      }
+      state.width = Math.max(state.width || DEFAULT_WIDTH, MIN_WIDTH)
+      state.height = Math.max(state.height || DEFAULT_HEIGHT, MIN_HEIGHT)
+      return state
+    }
+  } catch { /* file doesn't exist yet */ }
+  return { x: null, y: null, width: DEFAULT_WIDTH, height: DEFAULT_HEIGHT, maximized: false }
+}
+
+function saveState(win: BrowserWindow): void {
+  const bounds = win.getBounds()
+  const state = { ...bounds, maximized: win.isMaximized() }
+  writeFile(STATE_FILE, JSON.stringify(state), 'utf-8', () => {})
+}
+
+export function restoreAndTrack(win: BrowserWindow): void {
+  const lastState = getLastState()
+  if (lastState.x != null && lastState.y != null) {
+    win.setBounds({ x: lastState.x, y: lastState.y, width: lastState.width, height: lastState.height })
+  }
+  if (lastState.maximized) {
+    win.maximize()
+  }
+  win.on('close', () => saveState(win))
+}