Add custom window / native window controls

[webfiltered]

Modern linux / win32 window

• Requires Export all API types #567
• Provides API only; screenshots are examples
• Adds OS-native window code for custom window replacement on linux / win32
  • Adjusts button size to toolbar
  • Transparent background
  • Theme-reactive - colours dictated by frontend API
• Enables (WIP) Add desktop custom window / native window controls ComfyUI_frontend#1856
• No changes to default behaviour

Example implementation:

windowStyle.mp4

// Configured in config.json
"windowStyle": "default" | "custom"

┆Issue is synchronized with this Notion page by Unito

[huchenlei]

Can you also add a UI screenshot when menu location is set to Bottom?

[webfiltered]

I have not handled that case here.

If we want to support bottom menu on desktop, we will need another title bar - having the window drag from the bottom is not .. really an option from a UX perspective.

I'll use the original window w/default Windows titlebar. I'll have to add something in to recreate the window (or require desktop restart).

[huchenlei]

• Add desktop custom window / native window controls ComfyUI_frontend#1856

Ok then we probably want to disallow "Bottom" location of menu bar on electron app.

[webfiltered]

@huchenlei Fixed the broken logic in this PR - it now just does what frontend tells it to, instead of forcing new default behaviour.

[huchenlei]

There doesn't seem to be a write to windowStyle. Can you explain how is the store value initialized and updated?

[webfiltered]

There doesn't seem to be a write to windowStyle. Can you explain how is the store value initialized and updated?

There isn't one. That flag was for troubleshooting only.

This PR was originally designed to simply replace the title bar, without any on/off switches. Allowing this requires destroying and recreating the app window; it would either require restarting the app, or a bit of re-architecting.

Fixing this right now is not optimal. This PR will have to wait until other changes are in.

[webfiltered]

Previous comments are all resolved; API is complete, no changes to default behaviour. Impl. detail / UX can be handled entirely in frontend.