Maximise across multiple displays

[engegu]

I have a 2 display setup with the second screen set as "extended desktop", is it possible for rectangle to maximise my app window across the whole 2 screen desktop?

[nertzy]

I don't think so - modern macOS doesn't actually render windows across multiple screens anymore, right?

Try dragging a window to be half-in and half-out and once you let go of the drag, only one screen is left showing the window.

My educated guess is that Rectangle couldn't change that system-level behavior.

[rxhanson]

@ainsleyclark maybe that wouldn't be the identical path you'd end up with, but it'd be fine to start there. If I can get some time to look into it, I'll give it a go. If not, I'll let you know and I'd be fine merging in a pull request for this.

[ainsleyclark]

That would be fantastic 🙏 it would help me so much.

[b0mbard1er]

I started looking into this-- while it's very easy to find the value of Displays have separate spaces (screensHaveSeparateSpaces is a property of NSScreens) implementing it without a GUI element seems difficult. The user would need to specify which screens to combine. Say I wanted to treat 2 screens as 1, the naive implementation would only work if no other displays were connected or it would lead to very undesirable results.

If such a feature were to be implemented I imagine it'd need a toggle and a "displays to combine" selector of some kind.

[engegu]

Great to see his getting some traction! 😎

I think my usecase, multiple (2) external displays, is likely to be the most common one. A “maximize across external displays” option, available when displays dont have sepetate spaces, would be great. Arrangement would be as set up in the os?

Hell, i’d even love a “maximize with double width feature”, not as elegant but would work fine for those of us with duals of identical size…

[ainsleyclark]

Hey, thank you for starting to look into this 👍
Just wondering if someone had time to flesh it out by any chance?

[ainsleyclark]

Anyone landing, I've created a very hacky Applescript to move windows across multiple screens and assigned it to a keyboard shortcut.

set windowTitle to ""
tell application "System Events"
	set windowTitle to name of first application process whose frontmost is true
end tell
tell application "System Events"
	set position of first window of application process windowTitle to {4800, 0}
	set size of first window of application process windowTitle to {1600, 1800}
end tell