369 lines
11 KiB
Nix
369 lines
11 KiB
Nix
{ config, lib, pkgs, ... }:
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let
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cfg = config.services.autorandr;
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hookType = lib.types.lines;
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matrixOf = n: m: elemType:
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lib.mkOptionType rec {
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name = "matrixOf";
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description =
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"${toString n}×${toString m} matrix of ${elemType.description}s";
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check = xss:
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let listOfSize = l: xs: lib.isList xs && lib.length xs == l;
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in listOfSize n xss
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&& lib.all (xs: listOfSize m xs && lib.all elemType.check xs) xss;
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merge = lib.mergeOneOption;
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getSubOptions = prefix: elemType.getSubOptions (prefix ++ [ "*" "*" ]);
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getSubModules = elemType.getSubModules;
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substSubModules = mod: matrixOf n m (elemType.substSubModules mod);
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functor = (lib.defaultFunctor name) // { wrapped = elemType; };
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};
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profileModule = lib.types.submodule {
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options = {
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fingerprint = lib.mkOption {
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type = lib.types.attrsOf lib.types.str;
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description = ''
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Output name to EDID mapping.
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Use `autorandr --fingerprint` to get current setup values.
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'';
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default = { };
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};
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config = lib.mkOption {
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type = lib.types.attrsOf configModule;
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description = "Per output profile configuration.";
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default = { };
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};
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hooks = lib.mkOption {
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type = hooksModule;
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description = "Profile hook scripts.";
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default = { };
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};
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};
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};
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configModule = lib.types.submodule {
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options = {
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enable = lib.mkOption {
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type = lib.types.bool;
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description = "Whether to enable the output.";
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default = true;
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};
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crtc = lib.mkOption {
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type = lib.types.nullOr lib.types.ints.unsigned;
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description = "Output video display controller.";
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default = null;
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example = 0;
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};
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primary = lib.mkOption {
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type = lib.types.bool;
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description = "Whether output should be marked as primary";
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default = false;
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};
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position = lib.mkOption {
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type = lib.types.str;
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description = "Output position";
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default = "";
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example = "5760x0";
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};
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mode = lib.mkOption {
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type = lib.types.str;
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description = "Output resolution.";
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default = "";
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example = "3840x2160";
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};
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rate = lib.mkOption {
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type = lib.types.str;
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description = "Output framerate.";
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default = "";
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example = "60.00";
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};
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gamma = lib.mkOption {
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type = lib.types.str;
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description = "Output gamma configuration.";
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default = "";
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example = "1.0:0.909:0.833";
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};
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rotate = lib.mkOption {
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type = lib.types.nullOr (lib.types.enum [ "normal" "left" "right" "inverted" ]);
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description = "Output rotate configuration.";
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default = null;
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example = "left";
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};
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transform = lib.mkOption {
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type = lib.types.nullOr (matrixOf 3 3 lib.types.float);
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default = null;
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example = lib.literalExpression ''
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[
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[ 0.6 0.0 0.0 ]
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[ 0.0 0.6 0.0 ]
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[ 0.0 0.0 1.0 ]
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]
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'';
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description = ''
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Refer to
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{manpage}`xrandr(1)`
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for the documentation of the transform matrix.
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'';
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};
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dpi = lib.mkOption {
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type = lib.types.nullOr lib.types.ints.positive;
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description = "Output DPI configuration.";
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default = null;
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example = 96;
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};
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scale = lib.mkOption {
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type = lib.types.nullOr (lib.types.submodule {
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options = {
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method = lib.mkOption {
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type = lib.types.enum [ "factor" "pixel" ];
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description = "Output scaling method.";
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default = "factor";
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example = "pixel";
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};
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x = lib.mkOption {
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type = lib.types.either lib.types.float lib.types.ints.positive;
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description = "Horizontal scaling factor/pixels.";
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};
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y = lib.mkOption {
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type = lib.types.either lib.types.float lib.types.ints.positive;
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description = "Vertical scaling factor/pixels.";
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};
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};
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});
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description = ''
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Output scale configuration.
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Either configure by pixels or a scaling factor. When using pixel method the
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{manpage}`xrandr(1)`
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option
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`--scale-from`
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will be used; when using factor method the option
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`--scale`
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will be used.
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This option is a shortcut version of the transform option and they are mutually
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exclusive.
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'';
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default = null;
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example = lib.literalExpression ''
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{
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x = 1.25;
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y = 1.25;
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}
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'';
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};
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};
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};
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hooksModule = lib.types.submodule {
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options = {
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postswitch = lib.mkOption {
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type = lib.types.attrsOf hookType;
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description = "Postswitch hook executed after mode switch.";
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default = { };
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};
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preswitch = lib.mkOption {
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type = lib.types.attrsOf hookType;
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description = "Preswitch hook executed before mode switch.";
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default = { };
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};
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predetect = lib.mkOption {
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type = lib.types.attrsOf hookType;
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description = ''
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Predetect hook executed before autorandr attempts to run xrandr.
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'';
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default = { };
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};
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};
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};
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hookToFile = folder: name: hook:
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lib.nameValuePair "xdg/autorandr/${folder}/${name}" {
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source = "${pkgs.writeShellScriptBin "hook" hook}/bin/hook";
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};
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profileToFiles = name: profile:
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with profile;
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lib.mkMerge ([
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{
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"xdg/autorandr/${name}/setup".text = lib.concatStringsSep "\n"
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(lib.mapAttrsToList fingerprintToString fingerprint);
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"xdg/autorandr/${name}/config".text =
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lib.concatStringsSep "\n" (lib.mapAttrsToList configToString profile.config);
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}
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(lib.mapAttrs' (hookToFile "${name}/postswitch.d") hooks.postswitch)
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(lib.mapAttrs' (hookToFile "${name}/preswitch.d") hooks.preswitch)
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(lib.mapAttrs' (hookToFile "${name}/predetect.d") hooks.predetect)
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]);
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fingerprintToString = name: edid: "${name} ${edid}";
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configToString = name: config:
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if config.enable then
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lib.concatStringsSep "\n" ([ "output ${name}" ]
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++ lib.optional (config.position != "") "pos ${config.position}"
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++ lib.optional (config.crtc != null) "crtc ${toString config.crtc}"
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++ lib.optional config.primary "primary"
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++ lib.optional (config.dpi != null) "dpi ${toString config.dpi}"
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++ lib.optional (config.gamma != "") "gamma ${config.gamma}"
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++ lib.optional (config.mode != "") "mode ${config.mode}"
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++ lib.optional (config.rate != "") "rate ${config.rate}"
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++ lib.optional (config.rotate != null) "rotate ${config.rotate}"
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++ lib.optional (config.transform != null) ("transform "
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+ lib.concatMapStringsSep "," toString (lib.flatten config.transform))
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++ lib.optional (config.scale != null)
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((if config.scale.method == "factor" then "scale" else "scale-from")
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+ " ${toString config.scale.x}x${toString config.scale.y}"))
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else ''
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output ${name}
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off
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'';
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in {
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options = {
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services.autorandr = {
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enable = lib.mkEnableOption "handling of hotplug and sleep events by autorandr";
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defaultTarget = lib.mkOption {
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default = "default";
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type = lib.types.str;
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description = ''
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Fallback if no monitor layout can be detected. See the docs
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(https://github.com/phillipberndt/autorandr/blob/v1.0/README.md#how-to-use)
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for further reference.
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'';
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};
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ignoreLid = lib.mkOption {
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default = false;
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type = lib.types.bool;
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description = "Treat outputs as connected even if their lids are closed";
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};
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matchEdid = lib.mkOption {
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default = false;
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type = lib.types.bool;
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description = "Match displays based on edid instead of name";
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};
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hooks = lib.mkOption {
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type = hooksModule;
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description = "Global hook scripts";
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default = { };
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example = lib.literalExpression ''
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{
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postswitch = {
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"notify-i3" = "''${pkgs.i3}/bin/i3-msg restart";
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"change-background" = readFile ./change-background.sh;
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"change-dpi" = '''
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case "$AUTORANDR_CURRENT_PROFILE" in
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default)
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DPI=120
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;;
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home)
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DPI=192
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;;
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work)
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DPI=144
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;;
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*)
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echo "Unknown profle: $AUTORANDR_CURRENT_PROFILE"
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exit 1
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esac
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echo "Xft.dpi: $DPI" | ''${pkgs.xorg.xrdb}/bin/xrdb -merge
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''';
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};
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}
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'';
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};
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profiles = lib.mkOption {
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type = lib.types.attrsOf profileModule;
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description = "Autorandr profiles specification.";
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default = { };
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example = lib.literalExpression ''
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{
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"work" = {
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fingerprint = {
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eDP1 = "<EDID>";
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DP1 = "<EDID>";
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};
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config = {
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eDP1.enable = false;
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DP1 = {
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enable = true;
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crtc = 0;
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primary = true;
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position = "0x0";
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mode = "3840x2160";
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gamma = "1.0:0.909:0.833";
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rate = "60.00";
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rotate = "left";
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};
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};
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hooks.postswitch = readFile ./work-postswitch.sh;
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};
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}
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'';
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};
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};
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};
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config = lib.mkIf cfg.enable {
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services.udev.packages = [ pkgs.autorandr ];
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environment = {
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systemPackages = [ pkgs.autorandr ];
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etc = lib.mkMerge ([
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(lib.mapAttrs' (hookToFile "postswitch.d") cfg.hooks.postswitch)
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(lib.mapAttrs' (hookToFile "preswitch.d") cfg.hooks.preswitch)
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(lib.mapAttrs' (hookToFile "predetect.d") cfg.hooks.predetect)
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(lib.mkMerge (lib.mapAttrsToList profileToFiles cfg.profiles))
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]);
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};
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systemd.services.autorandr = {
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wantedBy = [ "sleep.target" ];
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description = "Autorandr execution hook";
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after = [ "sleep.target" ];
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startLimitIntervalSec = 5;
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startLimitBurst = 1;
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serviceConfig = {
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ExecStart = ''
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${pkgs.autorandr}/bin/autorandr \
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--batch \
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--change \
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--default ${cfg.defaultTarget} \
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${lib.optionalString cfg.ignoreLid "--ignore-lid"} \
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${lib.optionalString cfg.matchEdid "--match-edid"}
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'';
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Type = "oneshot";
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RemainAfterExit = false;
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KillMode = "process";
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};
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};
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};
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meta.maintainers = with lib.maintainers; [ alexnortung ];
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}
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