Request a Gnoblin titlebar

Provide a server titlebar when an application requests Gnoblin to draw its frame:

Lua

gnoblin.window_rule {
    match = {type = "window"},
    frame = {mode = "auto", renderer = "native", extents = {36, 0, 0, 0}},
}

Field	Accepted values	Default	Effect
`mode`	`"off"`, `"auto"`, `"prefer-server"`, `"replace"`	`"off"`	`"auto"` adds a Gnoblin frame when the app requests server-side decoration.
`renderer`	Registered renderer name or `"native"`	`"native"`	Selects the frame renderer.
`extents`	Four integers from 0 to 256	`{32, 1, 1, 1}`	Top, right, bottom, and left frame sizes in logical pixels.

Apps that draw their own titlebars keep them in "auto" mode. See window frames for other modes and negotiation.