Mitchell Hashimoto b65c26966a macos: fix window borders on dark mode (#4308)
After updating to 1.0.1 I noticed something different in the terminal,
which turned out being the window borders - it appeared as if Ghostty
was using light-mode style borders (dark/black outline with a thin light
stroke at the top) instead of the entire light outline from before:

| 1.0.0 | 1.0.1 |
| - | - |
| <img width="308" alt="Screenshot 2025-01-01 at 2 28 12 PM"
src="https://github.com/user-attachments/assets/d8bc5bdd-c3b2-401c-a8ed-9da0b768cb3d"
/> | <img width="308" alt="Screenshot 2025-01-01 at 2 29 07 PM"
src="https://github.com/user-attachments/assets/fd710bed-1756-4f66-8402-bfbdd25218ab"
/> |

After digging a bit, I found #3834, which fixes fullscreen background
colors through alpha channels by appending a `withAlphaComponent(0.0)`
to `backgroundColor` - for reasons I may be entirely unaware of (since
I'm not a Swift developer), this seems to cause the dark-mode border
style to go away.

Some lines above that, I noticed the `.clear` callout from line 266,
which talks about matching Terminal.app's styles, and it _also_ has a
`withAlphaComponent` but set to `0.001` - if I understand correctly, and
the fix from #3834 works by setting the alpha component to a
_practically_ zero value, then I thought perhaps a really small number
like `0.001` could do the trick as well. This ended up working and
bringing back the right borders again.

Not sure again if this may make a difference anywhere else in the app or
bring any undesired behavior, but if anyone who is well-versed in Swift
would like chime in with more details or perhaps a better approach, I'd
greatly appreciate it!
2025-01-02 15:41:57 -08:00
..