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b6139e58e3
This option is only available as a command-line flag and not from the config file, that is `services.picom.settings`. Therefore it is more important that it gets its own option. One reason one might need this set is that blur methods other than kernel do not work with the old backends, see yshui/picom#464. For reference, the home-manager picom module exposes this option too.
326 lines
8.8 KiB
Nix
326 lines
8.8 KiB
Nix
{ config, lib, pkgs, ... }:
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with lib;
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let
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cfg = config.services.picom;
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pairOf = x: with types;
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addCheck (listOf x) (y: length y == 2)
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// { description = "pair of ${x.description}"; };
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floatBetween = a: b: with types;
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let
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# toString prints floats with hardcoded high precision
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floatToString = f: builtins.toJSON f;
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in
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addCheck float (x: x <= b && x >= a)
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// { description = "a floating point number in " +
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"range [${floatToString a}, ${floatToString b}]"; };
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mkDefaultAttrs = mapAttrs (n: v: mkDefault v);
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# Basically a tinkered lib.generators.mkKeyValueDefault
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# It either serializes a top-level definition "key: { values };"
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# or an expression "key = { values };"
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mkAttrsString = top:
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mapAttrsToList (k: v:
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let sep = if (top && isAttrs v) then ":" else "=";
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in "${escape [ sep ] k}${sep}${mkValueString v};");
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# This serializes a Nix expression to the libconfig format.
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mkValueString = v:
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if types.bool.check v then boolToString v
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else if types.int.check v then toString v
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else if types.float.check v then toString v
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else if types.str.check v then "\"${escape [ "\"" ] v}\""
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else if builtins.isList v then "[ ${concatMapStringsSep " , " mkValueString v} ]"
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else if types.attrs.check v then "{ ${concatStringsSep " " (mkAttrsString false v) } }"
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else throw ''
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invalid expression used in option services.picom.settings:
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${v}
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'';
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toConf = attrs: concatStringsSep "\n" (mkAttrsString true cfg.settings);
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configFile = pkgs.writeText "picom.conf" (toConf cfg.settings);
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in {
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imports = [
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(mkAliasOptionModule [ "services" "compton" ] [ "services" "picom" ])
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];
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options.services.picom = {
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enable = mkOption {
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type = types.bool;
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default = false;
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description = ''
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Whether or not to enable Picom as the X.org composite manager.
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'';
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};
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experimentalBackends = mkOption {
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type = types.bool;
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default = false;
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description = ''
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Whether to use the unstable new reimplementation of the backends.
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'';
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};
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fade = mkOption {
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type = types.bool;
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default = false;
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description = ''
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Fade windows in and out.
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'';
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};
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fadeDelta = mkOption {
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type = types.ints.positive;
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default = 10;
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example = 5;
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description = ''
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Time between fade animation step (in ms).
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'';
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};
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fadeSteps = mkOption {
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type = pairOf (floatBetween 0.01 1);
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default = [ 0.028 0.03 ];
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example = [ 0.04 0.04 ];
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description = ''
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Opacity change between fade steps (in and out).
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'';
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};
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fadeExclude = mkOption {
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type = types.listOf types.str;
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default = [];
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example = [
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"window_type *= 'menu'"
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"name ~= 'Firefox$'"
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"focused = 1"
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];
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description = ''
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List of conditions of windows that should not be faded.
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See <literal>picom(1)</literal> man page for more examples.
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'';
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};
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shadow = mkOption {
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type = types.bool;
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default = false;
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description = ''
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Draw window shadows.
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'';
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};
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shadowOffsets = mkOption {
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type = pairOf types.int;
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default = [ (-15) (-15) ];
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example = [ (-10) (-15) ];
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description = ''
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Left and right offset for shadows (in pixels).
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'';
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};
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shadowOpacity = mkOption {
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type = floatBetween 0 1;
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default = 0.75;
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example = 0.8;
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description = ''
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Window shadows opacity.
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'';
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};
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shadowExclude = mkOption {
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type = types.listOf types.str;
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default = [];
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example = [
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"window_type *= 'menu'"
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"name ~= 'Firefox$'"
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"focused = 1"
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];
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description = ''
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List of conditions of windows that should have no shadow.
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See <literal>picom(1)</literal> man page for more examples.
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'';
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};
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activeOpacity = mkOption {
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type = floatBetween 0 1;
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default = 1.0;
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example = 0.8;
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description = ''
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Opacity of active windows.
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'';
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};
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inactiveOpacity = mkOption {
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type = floatBetween 0.1 1;
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default = 1.0;
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example = 0.8;
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description = ''
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Opacity of inactive windows.
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'';
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};
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menuOpacity = mkOption {
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type = floatBetween 0 1;
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default = 1.0;
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example = 0.8;
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description = ''
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Opacity of dropdown and popup menu.
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'';
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};
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wintypes = mkOption {
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type = types.attrs;
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default = { popup_menu = { opacity = cfg.menuOpacity; }; dropdown_menu = { opacity = cfg.menuOpacity; }; };
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example = {};
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description = ''
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Rules for specific window types.
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'';
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};
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opacityRules = mkOption {
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type = types.listOf types.str;
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default = [];
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example = [
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"95:class_g = 'URxvt' && !_NET_WM_STATE@:32a"
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"0:_NET_WM_STATE@:32a *= '_NET_WM_STATE_HIDDEN'"
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];
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description = ''
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Rules that control the opacity of windows, in format PERCENT:PATTERN.
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'';
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};
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backend = mkOption {
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type = types.enum [ "glx" "xrender" "xr_glx_hybrid" ];
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default = "xrender";
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description = ''
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Backend to use: <literal>glx</literal>, <literal>xrender</literal> or <literal>xr_glx_hybrid</literal>.
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'';
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};
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vSync = mkOption {
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type = with types; either bool
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(enum [ "none" "drm" "opengl" "opengl-oml" "opengl-swc" "opengl-mswc" ]);
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default = false;
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apply = x:
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let
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res = x != "none";
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msg = "The type of services.picom.vSync has changed to bool:"
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+ " interpreting ${x} as ${boolToString res}";
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in
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if isBool x then x
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else warn msg res;
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description = ''
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Enable vertical synchronization. Chooses the best method
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(drm, opengl, opengl-oml, opengl-swc, opengl-mswc) automatically.
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The bool value should be used, the others are just for backwards compatibility.
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'';
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};
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refreshRate = mkOption {
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type = types.ints.unsigned;
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default = 0;
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example = 60;
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description = ''
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Screen refresh rate (0 = automatically detect).
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'';
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};
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settings = with types;
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let
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scalar = oneOf [ bool int float str ]
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// { description = "scalar types"; };
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libConfig = oneOf [ scalar (listOf libConfig) (attrsOf libConfig) ]
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// { description = "libconfig type"; };
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topLevel = attrsOf libConfig
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// { description = ''
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libconfig configuration. The format consists of an attributes
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set (called a group) of settings. Each setting can be a scalar type
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(boolean, integer, floating point number or string), a list of
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scalars or a group itself
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'';
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};
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in mkOption {
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type = topLevel;
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default = { };
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example = literalExample ''
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blur =
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{ method = "gaussian";
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size = 10;
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deviation = 5.0;
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};
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'';
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description = ''
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Picom settings. Use this option to configure Picom settings not exposed
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in a NixOS option or to bypass one. For the available options see the
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CONFIGURATION FILES section at <literal>picom(1)</literal>.
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'';
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};
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};
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config = mkIf cfg.enable {
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services.picom.settings = mkDefaultAttrs {
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# fading
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fading = cfg.fade;
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fade-delta = cfg.fadeDelta;
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fade-in-step = elemAt cfg.fadeSteps 0;
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fade-out-step = elemAt cfg.fadeSteps 1;
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fade-exclude = cfg.fadeExclude;
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# shadows
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shadow = cfg.shadow;
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shadow-offset-x = elemAt cfg.shadowOffsets 0;
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shadow-offset-y = elemAt cfg.shadowOffsets 1;
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shadow-opacity = cfg.shadowOpacity;
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shadow-exclude = cfg.shadowExclude;
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# opacity
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active-opacity = cfg.activeOpacity;
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inactive-opacity = cfg.inactiveOpacity;
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wintypes = cfg.wintypes;
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opacity-rule = cfg.opacityRules;
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# other options
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backend = cfg.backend;
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vsync = cfg.vSync;
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refresh-rate = cfg.refreshRate;
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};
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systemd.user.services.picom = {
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description = "Picom composite manager";
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wantedBy = [ "graphical-session.target" ];
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partOf = [ "graphical-session.target" ];
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# Temporarily fixes corrupt colours with Mesa 18
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environment = mkIf (cfg.backend == "glx") {
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allow_rgb10_configs = "false";
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};
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serviceConfig = {
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ExecStart = "${pkgs.picom}/bin/picom --config ${configFile}"
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+ (optionalString cfg.experimentalBackends " --experimental-backends");
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RestartSec = 3;
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Restart = "always";
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};
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};
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environment.systemPackages = [ pkgs.picom ];
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};
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meta.maintainers = with lib.maintainers; [ rnhmjoj ];
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}
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