Compton shadows on floating windows only

asked 2014-06-04 08:14:47 +0000

wuxmedia
41 ●2 ●3 ●6

Hi, Long time user, always found my answers on here, or just worked it out.

So the title says it all really, as a previous post says shadows are a bit pointless on a tiler. But... on a floating window, that would look great, and help pick the window out from the existing tiles (I have just colour for a wall, right now) I don't always float, but when I do I'd like shadows!

Compton allows exclusions on WM_class, so: I have tried xprop and xwininfo to see if there is a difference between floaters as far as X is concerned. None that I can see.

Compton allows wintypes exclusions: No idea where the wintype info is, the above apps seem not to show them.

Tried googling for that but not much luck.

I have tried entering into the compton conf some guesses (float/ing/ed) for wintypes. No Joy. This maybe more of a compton question, but it does relate to i3, I think as I'm not sure if compton can pick out the floats, I can't be the only person to wish this, can I?

Anyway, thanks for listening.

If it's impossible, I'll just not bother with compton. Cheers, WuX

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There is no such thing as a "floating" wintype in any spec. Your options would be to request a feature for the property in core (and try to be persuasive) or amend the ipc (add-on) interface for a "floating" event and write your own extension.

TonyC ( 2014-06-14 07:09:33 +0000 )edit

Thanks TonyC - I was hoping you'd answer this one. I had the feeling that it wouldn't be an easy fix. I might have a look at the ipc thing - see if i can work out how to do it. I'm really enjoying compton.

wuxmedia ( 2014-06-14 08:27:22 +0000 )edit

It's definitely possible to do, but it might take some understanding of X11. Improving compatibility with compton is definitely something I would like to work on in the future.

TonyC ( 2014-06-15 03:33:04 +0000 )edit

I also asked for this, a way to select windows by its state: "for_window [state='floating'] move to .....".

tigrezno ( 2014-07-21 19:04:40 +0000 )edit

well - In the end I just disabled the shadow on my terminal windows, then it didn't look so weird but the notifications etc look nice and shadowy :)

wuxmedia ( 2015-04-08 11:42:27 +0000 )edit

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answered 2014-06-15 23:21:35 +0000

zolar
21 ●3

updated 2014-07-21 16:26:43 +0000

In compton.conf, add

"! \_COMPTON_SHADOW@:32c = 1 && ! name ^= '[i3 con] floatingcon around'"

to the "shadow-exclude" line

Then we need an "ugly_workaround_script.sh" (I use busybox here)

#!/bin/bb

ombra() {    
    local active=$(xprop -notype -root _NET_ACTIVE_WINDOW)
    local status=$(xprop -notype -id ${active##*\ } _COMPTON_SHADOW)
    if [ "$status" = "_COMPTON_SHADOW = 1" ]; then
        xprop -id ${active##*\ } -remove _COMPTON_SHADOW
    else
        xprop -id ${active##*\ } -f _COMPTON_SHADOW 32c -set _COMPTON_SHADOW 1
    fi
}

ombra

exit 0

In i3/config add

set $float exec --no-startup-id path_to/ugly_workaround_script.sh, floating toggle

and replace all "floating toggle" with $float, e.g.

bindsym $mod+space $float
for_window [instance="^mpv$"] $float, workspace video

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Excellent work Zolar! muchas gracias I will try this out as soon as I can, (X) Props for finding a workaround!

wuxmedia ( 2014-06-21 08:38:20 +0000 )edit

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answered 2014-06-09 17:33:58 +0000

phairland
598 ●9 ●26 ●31

The only thing you can do in i3 is changing the thickness of the window border.

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Thanks for the workaround phairland, in a similar move, I just made the shadows really tight and the same colour as the borders, so it kinda blends in.

wuxmedia ( 2014-06-14 08:32:01 +0000 )edit

Cool hack! But I'm getting an error when starting Compton: Pattern "! _COMPTON_SHADOW@:32c = 1 && ! name ^= '[i3 con] floatingcon around'" pos 2: Empty target. Here is the line from my compton.conf shadow-exclude = [ "! \_COMPTON_SHADOW@:32c = 1 && ! name ^= '[i3 con] floatingcon around'" ];

ViktorNova ( 2014-07-11 20:55:38 +0000 )edit

Should work. I'm using the git version.

zolar ( 2014-07-21 16:16:56 +0000 )edit

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Compton shadows on floating windows only

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