Building a Multiplatform Window Manager for Fun

on YouTube ↗40m

" summary

Builds a working Compose Multiplatform prototype called Fen that runs on Android, iOS, Desktop and Web and re-creates a Windows XP “Luna” look using nine‑patch theme assets. It exposes a theming interface with interaction sources, gives each window its own ViewModelStore so view models survive minimization, fixes remember vs rememberSavable with a savable state provider, implements background mode to keep media composed, and maps window focus to lifecycle states so adaptive layouts and immersive full‑screen all behave correctly.

AI-written summary · about

" chapters (12)

1. 0:00Building a window manager
2. 3:05Name and tech stack
3. 8:47First window prototype
4. 9:29Windows XP Luna theme
5. 13:41Refining window framework
6. 21:28Desktop state and composition
7. 24:19View models and state preservation
8. 26:48Window minimization and background
9. 29:18Lifecycle awareness in windows
10. 32:09Multiplatform layout adaptation
11. 34:20Optimizing immersive displays
12. 37:14Final demo and summary

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