nix-config/modules/system/niri/config.kdl

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// This config is in the KDL format: https://kdl.dev
// "/-" comments out the following node.
input {
keyboard {
xkb {
// You can set rules, model, layout, variant and options.
// For more information, see xkeyboard-config(7).
// For example:
// layout "us,ru"
// options "grp:win_space_toggle,compose:ralt,ctrl:nocaps"
}
// You can set the keyboard repeat parameters. The defaults match wlroots and sway.
// Delay is in milliseconds before the repeat starts. Rate is in characters per second.
// repeat-delay 600
// repeat-rate 25
// Niri can remember the keyboard layout globally (the default) or per-window.
// - "global" - layout change is global for all windows.
// - "window" - layout is tracked for each window individually.
// track-layout "global"
}
// Next sections include libinput settings.
// Omitting settings disables them, or leaves them at their default values.
touchpad {
tap
// dwt
natural-scroll
// accel-speed 0.2
// accel-profile "flat"
// tap-button-map "left-middle-right"
}
mouse {
// natural-scroll
// accel-speed 0.2
// accel-profile "flat"
}
tablet {
// Set the name of the output (see below) which the tablet will map to.
// If this is unset or the output doesn't exist, the tablet maps to one of the
// existing outputs.
map-to-output "DP-1"
}
// By default, niri will take over the power button to make it sleep
// instead of power off.
// Uncomment this if you would like to configure the power button elsewhere
// (i.e. logind.conf).
// disable-power-key-handling
}
// You can configure outputs by their name, which you can find with wayland-info(1).
// The built-in laptop monitor is usually called "eDP-1".
// Remember to uncommend the node by removing "/-"!
output "DP-3" {
// Uncomment this line to disable this output.
// off
// Scale is a floating-point number, but at the moment only integer values work.
scale 1.0
// Resolution and, optionally, refresh rate of the output.
// The format is "<width>x<height>" or "<width>x<height>@<refresh rate>".
// If the refresh rate is omitted, niri will pick the highest refresh rate
// for the resolution.
// If the mode is omitted altogether or is invalid, niri will pick one automatically.
// All valid modes are listed in niri's debug output when an output is connected.
mode "5120x2160@59.940"
// Position of the output in the global coordinate space.
// This affects directional monitor actions like "focus-monitor-left", and cursor movement.
// The cursor can only move between directly adjacent outputs.
// Output scale has to be taken into account for positioning:
// outputs are sized in logical, or scaled, pixels.
// For example, a 3840×2160 output with scale 2.0 will have a logical size of 1920×1080,
// so to put another output directly adjacent to it on the right, set its x to 1920.
// It the position is unset or results in an overlap, the output is instead placed
// automatically.
}
layout {
// You can change how the focus ring looks.
focus-ring {
// Uncomment this line to disable the focus ring.
// off
// How many logical pixels the ring extends out from the windows.
width 4
// Color of the ring on the active monitor: red, green, blue, alpha.
active-color 127 200 255 255
// Color of the ring on inactive monitors: red, green, blue, alpha.
inactive-color 80 80 80 255
}
// You can also add a border. It's similar to the focus ring, but always visible.
border {
// The settings are the same as for the focus ring.
// If you enable the border, you probably want to disable the focus ring.
off
width 4
active-color 255 200 127 255
inactive-color 80 80 80 255
}
// You can customize the widths that "switch-preset-column-width" (Mod+R) toggles between.
preset-column-widths {
// Proportion sets the width as a fraction of the output width, taking gaps into account.
// For example, you can perfectly fit four windows sized "proportion 0.25" on an output.
// The default preset widths are 1/3, 1/2 and 2/3 of the output.
proportion 0.333
proportion 0.5
proportion 0.667
// Fixed sets the width in logical pixels exactly.
// fixed 1920
}
// You can change the default width of the new windows.
default-column-width { proportion 0.5; }
// If you leave the brackets empty, the windows themselves will decide their initial width.
// default-column-width {}
// Set gaps around windows in logical pixels.
gaps 8
// Struts shrink the area occupied by windows, similarly to layer-shell panels.
// You can think of them as a kind of outer gaps. They are set in logical pixels.
// Left and right struts will cause the next window to the side to always be visible.
// Top and bottom struts will simply add outer gaps in addition to the area occupied by
// layer-shell panels and regular gaps.
struts {
// left 64
// right 64
// top 64
// bottom 64
}
// When to center a column when changing focus, options are:
// - "never", default behavior, focusing an off-screen column will keep at the left
// or right edge of the screen.
// - "on-overflow", focusing a column will center it if it doesn't fit
// together with the previously focused column.
// - "always", the focused column will always be centered.
center-focused-column "never"
}
// Add lines like this to spawn processes at startup.
// Note that running niri as a session supports xdg-desktop-autostart,
// which may be more convenient to use.
// spawn-at-startup "alacritty" "-e" "fish"
cursor {
// Change the theme and size of the cursor as well as set the
// `XCURSOR_THEME` and `XCURSOR_SIZE` env variables.
// xcursor-theme "default"
// xcursor-size 24
}
// Uncomment this line to ask the clients to omit their client-side decorations if possible.
// If the client will specifically ask for CSD, the request will be honored.
// Additionally, clients will be informed that they are tiled, removing some rounded corners.
// prefer-no-csd
// You can change the path where screenshots are saved.
// A ~ at the front will be expanded to the home directory.
// The path is formatted with strftime(3) to give you the screenshot date and time.
screenshot-path "~/Pictures/Screenshots/Screenshot from %Y-%m-%d %H-%M-%S.png"
// You can also set this to null to disable saving screenshots to disk.
// screenshot-path null
binds {
// Keys consist of modifiers separated by + signs, followed by an XKB key name
// in the end. To find an XKB name for a particular key, you may use a program
// like wev.
//
// "Mod" is a special modifier equal to Super when running on a TTY, and to Alt
// when running as a winit window.
// Suggested binds for running programs: terminal, app launcher, screen locker.
Mod+T { spawn "alacritty"; }
Mod+B { spawn "firefox"; }
Mod+Q { close-window; }
Mod+Comma { focus-column-left; }
Mod+Period { focus-column-right; }
Mod+Left { focus-column-left; }
Mod+Down { focus-window-down; }
Mod+Up { focus-window-up; }
Mod+Right { focus-column-right; }
Mod+Shift+Comma { move-column-left; }
Mod+Shift+Period { move-window-down; }
Mod+Ctrl+Left { move-column-left; }
Mod+Ctrl+Down { move-window-down; }
Mod+Ctrl+Up { move-window-up; }
Mod+Ctrl+Right { move-column-right; }
// Alternative commands that move across workspaces when reaching
// the first or last window in a column.
// Mod+J { focus-window-or-workspace-down; }
// Mod+K { focus-window-or-workspace-up; }
// Mod+Ctrl+J { move-window-down-or-to-workspace-down; }
// Mod+Ctrl+K { move-window-up-or-to-workspace-up; }
Mod+F { maximize-column; }
Mod+C { center-column; }
// Finer width adjustments.
// This command can also:
// * set width in pixels: "1000"
// * adjust width in pixels: "-5" or "+5"
// * set width as a percentage of screen width: "25%"
// * adjust width as a percentage of screen width: "-10%" or "+10%"
// Pixel sizes use logical, or scaled, pixels. I.e. on an output with scale 2.0,
// set-column-width "100" will make the column occupy 200 physical screen pixels.
Mod+Minus { set-column-width "-10%"; }
Mod+Equal { set-column-width "+10%"; }
// Finer height adjustments when in column with other windows.
Mod+Shift+Minus { set-window-height "-10%"; }
Mod+Shift+Equal { set-window-height "+10%"; }
// Actions to switch layouts.
// Note: if you uncomment these, make sure you do NOT have
// a matching layout switch hotkey configured in xkb options above.
// Having both at once on the same hotkey will break the switching,
// since it will switch twice upon pressing the hotkey (once by xkb, once by niri).
// Mod+Space { switch-layout "next"; }
// Mod+Shift+Space { switch-layout "prev"; }
Print { screenshot; }
Ctrl+Print { screenshot-screen; }
Alt+Print { screenshot-window; }
Mod+Shift+E { quit; }
Mod+Shift+Ctrl+T { toggle-debug-tint; }
}
// Settings for debugging. Not meant for normal use.
// These can change or stop working at any point with little notice.
debug {
// Make niri take over its DBus services even if it's not running as a session.
// Useful for testing screen recording changes without having to relogin.
// The main niri instance will *not* currently take back the services; so you will
// need to relogin in the end.
// dbus-interfaces-in-non-session-instances
// Wait until every frame is done rendering before handing it over to DRM.
// wait-for-frame-completion-before-queueing
// Enable direct scanout into overlay planes.
// May cause frame drops during some animations on some hardware.
// enable-overlay-planes
// Disable the use of the cursor plane.
// The cursor will be rendered together with the rest of the frame.
// disable-cursor-plane
// Slow down animations by this factor.
// animation-slowdown 3.0
// Override the DRM device that niri will use for all rendering.
// render-drm-device "/dev/dri/renderD129"
}