How to store and recover the size and position of multiple windows in tauri?

In Tauri, managing the size and position of multiple windows typically involves the following steps:

1. Capture changes in window size and position
2. Save this data to local storage
3. Read the stored data at application startup and restore window state

Step 1: Capture Window Size and Position

In Tauri applications, you can leverage Tauri's API to monitor window events such as size changes and position changes. This can be achieved by listening to specific window events.

javascript
import { app, BrowserWindow } from '@tauri-apps/api/window';

const main = async () => {
  const myWindow = await appWindow();

  myWindow.onResized(({ event, payload }) => {
    console.log(`Window resized to ${payload.width}x${payload.height}`);
  });

  myWindow.onMoved(({ event, payload }) => {
    console.log(`Window moved to ${payload.x}, ${payload.y}`);
  });
};

main();

Step 2: Save Window State

After capturing changes in window size and position, the next step is to persist this information. In Tauri applications, you can use various methods to store data, such as the local file system or a local database.

Assuming we use a simple file system for storage:

javascript
import { writeTextFile, readTextFile } from '@tauri-apps/api/fs';

const saveWindowState = async (windowState) => {
  await writeTextFile('window-state.json', JSON.stringify(windowState));
};

const loadWindowState = async () => {
  const state = await readTextFile('window-state.json');
  return JSON.parse(state);
};

Step 3: Restore Window State

At application startup, you can read the previously saved window state and set the window size and position accordingly.

javascript
const main = async () => {
  const savedState = await loadWindowState();
  const myWindow = await appWindow();

  myWindow.setPosition(savedState.x, savedState.y);
  myWindow.setSize(savedState.width, savedState.height);
};

main();

Summary

By using the above methods, you can effectively manage and restore multiple window sizes and positions in Tauri applications. This not only enhances user experience but also improves the application's professionalism and usability. In practical applications, you may need to consider exception handling and data validation to ensure application stability and data accuracy.