focus-exclude WM_PROTOCOLS containing WM_TAKE_FOCUS

[OJFord]

picom version

vgit-dac85

Configuration:

backend = "xrender"

focus-exclude = [
    "class_g = 'firefox'",
]

inactive-opacity = 0.7

shadow = false

wintypes: {
  dock = {
    shadow = true
  }
  popup_menu = {
    shadow = true
  }
  tooltip = {
    shadow = true
  }
  utility = {
    shadow = true
  }
}

Other details

Some floating windows take my inactive-opacity undesirably; having just checked one I think focus-excludeing windows with WM_TAKE_FOCUS in WM_PROTOCOLS would help.

Is there a documented mapping between the WM_* values I can find with xprop and what needs to be in picom.conf? For example WM_CLASS = <a>, <b> -> class_g (& something else).

Or perhaps they can be used directly, since a couple are in the sample config? But then given it's a list how can we match on any that contains a given element (WM_TAKE_FOCUS)? I gather maybe it's something to do with the @:c or *= used in the sample config, but I can't find any reference to what they mean to libconfig.

[tryone144]

focus-exclude = [
    "WM_PROTOCOLS@[0]:a *= 'WM_TAKE_FOCUS'",
    "WM_PROTOCOLS@[1]:a *= 'WM_TAKE_FOCUS'",
    "WM_PROTOCOLS@[2]:a *= 'WM_TAKE_FOCUS'",
    "WM_PROTOCOLS@[3]:a *= 'WM_TAKE_FOCUS'",
];

should do the trick for a WM_TAKE_FOCUS based rule. These are documented in the FORMAT OF CONDITIONS section of the manpage.

The duplicates are currently nedded because the rules only check a single value of the WM_PROTOCOLS array. This should be fixed in the future by #550.

[OJFord]

Many thanks!