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Re: Child frame alpha (not background)
From: |
Po Lu |
Subject: |
Re: Child frame alpha (not background) |
Date: |
Sat, 11 Nov 2023 20:44:42 +0800 |
User-agent: |
Gnus/5.13 (Gnus v5.13) |
Psionic K <psionik@positron.solutions> writes:
> While developing champagne.el, I'm sure I saw child frame alpha (not just
> background) was working at some point. I think it has regressed. Code
> here:
> https://github.com/positron-solutions/champagne/blob/master/lisp/champagne.el#L189-L190
>
> I tried out PGTK and a number of window managers on 29 and master. I never
> got full transparency working again. I've been using XFCE forever. If
> anyone sees the simpler alpha frame property working, it would be helpful
> to know your window manager and Emacs version for bisection.
>
> The background transparency is pretty sweet. Can't wait to polish
> keypression some more. https://youtube.com/shorts/cXB7EnTcAD4
Neither alpha nor alpha-background has ever functioned under child
frames, since non-toplevel windows cannot be composited on any window
system we support. This is prerequisite for superimposing the contents
of any number of translucent windows upon their parents and siblings.
I have long been of the opinion that child frames are a misfeature; it
is better to create a frame that is kept above all others, and to
position such a frame manually.