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Merge pull request #86678 from rnhmjoj/picom

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nixos/picom: cleanup
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Michele Guerini Rocco 2020-05-06 10:27:16 +02:00 committed by GitHub
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3 changed files with 117 additions and 85 deletions
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10
nixos/doc/manual/configuration/xfce.xml
View file

@ -16,11 +16,11 @@
effects, some example settings:
<programlisting>
<link linkend="opt-services.picom.enable">services.picom</link> = {
<link linkend="opt-services.picom.enable">enable</link> = true;
<link linkend="opt-services.picom.fade">fade</link> = true;
<link linkend="opt-services.picom.inactiveOpacity">inactiveOpacity</link> = "0.9";
<link linkend="opt-services.picom.shadow">shadow</link> = true;
<link linkend="opt-services.picom.fadeDelta">fadeDelta</link> = 4;
<link linkend="opt-services.picom.enable">enable</link> = true;
<link linkend="opt-services.picom.fade">fade</link> = true;
<link linkend="opt-services.picom.inactiveOpacity">inactiveOpacity</link> = 0.9;
<link linkend="opt-services.picom.shadow">shadow</link> = true;
<link linkend="opt-services.picom.fadeDelta">fadeDelta</link> = 4;
};
</programlisting>
</para>

9
nixos/doc/manual/release-notes/rl-2009.xml
View file

@ -317,6 +317,15 @@ php.override {
<manvolnum>5</manvolnum></citerefentry> for details.
</para>
</listitem>
<listitem>
<para>
In the <literal>picom</literal> module, several options that accepted
floating point numbers encoded as strings (for example
<xref linkend="opt-services.picom.activeOpacity"/>) have been changed
to the (relatively) new native <literal>float</literal> type. To migrate
your configuration simply remove the quotes around the numbers.
</para>
</listitem>
</itemizedlist>
</section>

183
nixos/modules/services/x11/picom.nix
View file

@ -1,39 +1,48 @@
{ config, lib, pkgs, ... }:
with lib;
with builtins;
let
cfg = config.services.picom;
pairOf = x: with types; addCheck (listOf x) (y: length y == 2);
pairOf = x: with types;
addCheck (listOf x) (y: length y == 2)
// { description = "pair of ${x.description}"; };
floatBetween = a: b: with lib; with types;
addCheck str (x: versionAtLeast x a && versionOlder x b);
floatBetween = a: b: with types;
let
# toString prints floats with hardcoded high precision
floatToString = f: builtins.toJSON f;
in
addCheck float (x: x <= b && x >= a)
// { description = "a floating point number in " +
"range [${floatToString a}, ${floatToString b}]"; };
toConf = attrs: concatStringsSep "\n"
(mapAttrsToList
(k: v: let
sep = if isAttrs v then ":" else "=";
# Basically a tinkered lib.generators.mkKeyValueDefault
mkValueString = v:
if isBool v then boolToString v
else if isInt v then toString v
else if isFloat v then toString v
else if isString v then ''"${escape [ ''"'' ] v}"''
else if isList v then "[ "
+ concatMapStringsSep " , " mkValueString v
+ " ]"
else if isAttrs v then "{ "
+ concatStringsSep " "
(mapAttrsToList
(key: value: "${toString key}=${mkValueString value};")
v)
+ " }"
else abort "picom.mkValueString: unexpected type (v = ${v})";
in "${escape [ sep ] k}${sep}${mkValueString v};")
attrs);
mkDefaultAttrs = mapAttrs (n: v: mkDefault v);
# Basically a tinkered lib.generators.mkKeyValueDefault
# It either serializes a top-level definition "key: { values };"
# or an expression "key = { values };"
mkAttrsString = top:
mapAttrsToList (k: v:
let sep = if (top && isAttrs v) then ":" else "=";
in "${escape [ sep ] k}${sep}${mkValueString v};");
# This serializes a Nix expression to the libconfig format.
mkValueString = v:
if types.bool.check v then boolToString v
else if types.int.check v then toString v
else if types.float.check v then toString v
else if types.str.check v then "\"${escape [ "\"" ] v}\""
else if builtins.isList v then "[ ${concatMapStringsSep " , " mkValueString v} ]"
else if types.attrs.check v then "{ ${concatStringsSep " " (mkAttrsString false v) } }"
else throw ''
invalid expression used in option services.picom.settings:
${v}
'';
toConf = attrs: concatStringsSep "\n" (mkAttrsString true cfg.settings);
configFile = pkgs.writeText "picom.conf" (toConf cfg.settings);
@ -61,7 +70,7 @@ in {
};
fadeDelta = mkOption {
type = types.addCheck types.int (x: x > 0);
type = types.ints.positive;
default = 10;
example = 5;
description = ''
@ -70,12 +79,11 @@ in {
};
fadeSteps = mkOption {
type = pairOf (floatBetween "0.01" "1.01");
default = [ "0.028" "0.03" ];
example = [ "0.04" "0.04" ];
type = pairOf (floatBetween 0.01 1);
default = [ 0.028 0.03 ];
example = [ 0.04 0.04 ];
description = ''
Opacity change between fade steps (in and out).
(numbers in range 0.01 - 1.0)
'';
};
@ -111,11 +119,11 @@ in {
};
shadowOpacity = mkOption {
type = floatBetween "0.0" "1.01";
default = "0.75";
example = "0.8";
type = floatBetween 0 1;
default = 0.75;
example = 0.8;
description = ''
Window shadows opacity (number in range 0.0 - 1.0).
Window shadows opacity.
'';
};
@ -134,29 +142,29 @@ in {
};
activeOpacity = mkOption {
type = floatBetween "0.0" "1.01";
default = "1.0";
example = "0.8";
type = floatBetween 0 1;
default = 1.0;
example = 0.8;
description = ''
Opacity of active windows (number in range 0.0 - 1.0).
Opacity of active windows.
'';
};
inactiveOpacity = mkOption {
type = floatBetween "0.1" "1.01";
default = "1.0";
example = "0.8";
type = floatBetween 0.1 1;
default = 1.0;
example = 0.8;
description = ''
Opacity of inactive windows (number in range 0.1 - 1.0).
Opacity of inactive windows.
'';
};
menuOpacity = mkOption {
type = floatBetween "0.0" "1.01";
default = "1.0";
example = "0.8";
type = floatBetween 0 1;
default = 1.0;
example = 0.8;
description = ''
Opacity of dropdown and popup menu (number in range 0.0 - 1.0).
Opacity of dropdown and popup menu.
'';
};
@ -210,7 +218,7 @@ in {
};
refreshRate = mkOption {
type = types.addCheck types.int (x: x >= 0);
type = types.ints.unsigned;
default = 0;
example = 60;
description = ''
@ -218,54 +226,69 @@ in {
'';
};
settings = let
configTypes = with types; oneOf [ bool int float str ];
# types.loaOf converts lists to sets
loaOf = t: with types; either (listOf t) (attrsOf t);
settings = with types;
let
scalar = oneOf [ bool int float str ]
// { description = "scalar types"; };
libConfig = oneOf [ scalar (listOf libConfig) (attrsOf libConfig) ]
// { description = "libconfig type"; };
topLevel = attrsOf libConfig
// { description = ''
libconfig configuration. The format consists of an attributes
set (called a group) of settings. Each setting can be a scalar type
(boolean, integer, floating point number or string), a list of
scalars or a group itself
'';
};
in mkOption {
type = loaOf (types.either configTypes (loaOf (types.either configTypes (loaOf configTypes))));
default = {};
type = topLevel;
default = { };
example = literalExample ''
blur =
{ method = "gaussian";
size = 10;
deviation = 5.0;
};
'';
description = ''
Additional Picom configuration.
Picom settings. Use this option to configure Picom settings not exposed
in a NixOS option or to bypass one. For the available options see the
CONFIGURATION FILES section at <literal>picom(1)</literal>.
'';
};
};
config = mkIf cfg.enable {
services.picom.settings = let
# Hard conversion to float, literally lib.toInt but toFloat
toFloat = str: let
may_be_float = builtins.fromJSON str;
in if builtins.isFloat may_be_float
then may_be_float
else throw "Could not convert ${str} to float.";
in {
services.picom.settings = mkDefaultAttrs {
# fading
fading = mkDefault cfg.fade;
fade-delta = mkDefault cfg.fadeDelta;
fade-in-step = mkDefault (toFloat (elemAt cfg.fadeSteps 0));
fade-out-step = mkDefault (toFloat (elemAt cfg.fadeSteps 1));
fade-exclude = mkDefault cfg.fadeExclude;
fading = cfg.fade;
fade-delta = cfg.fadeDelta;
fade-in-step = elemAt cfg.fadeSteps 0;
fade-out-step = elemAt cfg.fadeSteps 1;
fade-exclude = cfg.fadeExclude;
# shadows
shadow = mkDefault cfg.shadow;
shadow-offset-x = mkDefault (elemAt cfg.shadowOffsets 0);
shadow-offset-y = mkDefault (elemAt cfg.shadowOffsets 1);
shadow-opacity = mkDefault (toFloat cfg.shadowOpacity);
shadow-exclude = mkDefault cfg.shadowExclude;
shadow = cfg.shadow;
shadow-offset-x = elemAt cfg.shadowOffsets 0;
shadow-offset-y = elemAt cfg.shadowOffsets 1;
shadow-opacity = cfg.shadowOpacity;
shadow-exclude = cfg.shadowExclude;
# opacity
active-opacity = mkDefault (toFloat cfg.activeOpacity);
inactive-opacity = mkDefault (toFloat cfg.inactiveOpacity);
active-opacity = cfg.activeOpacity;
inactive-opacity = cfg.inactiveOpacity;
wintypes = mkDefault cfg.wintypes;
wintypes = cfg.wintypes;
opacity-rule = mkDefault cfg.opacityRules;
opacity-rule = cfg.opacityRules;
# other options
backend = mkDefault cfg.backend;
vsync = mkDefault cfg.vSync;
refresh-rate = mkDefault cfg.refreshRate;
backend = cfg.backend;
vsync = cfg.vSync;
refresh-rate = cfg.refreshRate;
};
systemd.user.services.picom = {