248 lines
8.4 KiB
Nix
248 lines
8.4 KiB
Nix
{ config, lib, pkgs, ... }:
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with lib;
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let cfg = config.services.xserver.libinput;
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xorgBool = v: if v then "on" else "off";
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in {
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options = {
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services.xserver.libinput = {
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enable = mkEnableOption "libinput";
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dev = mkOption {
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type = types.nullOr types.str;
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default = null;
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example = "/dev/input/event0";
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description =
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''
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Path for touchpad device. Set to null to apply to any
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auto-detected touchpad.
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'';
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};
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accelProfile = mkOption {
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type = types.enum [ "flat" "adaptive" ];
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default = "adaptive";
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example = "flat";
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description =
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''
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Sets the pointer acceleration profile to the given profile.
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Permitted values are adaptive, flat.
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Not all devices support this option or all profiles.
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If a profile is unsupported, the default profile for this is used.
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<literal>flat</literal>: Pointer motion is accelerated by a constant
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(device-specific) factor, depending on the current speed.
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<literal>adaptive</literal>: Pointer acceleration depends on the input speed.
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This is the default profile for most devices.
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'';
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};
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accelSpeed = mkOption {
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type = types.nullOr types.str;
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default = null;
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description = "Cursor acceleration (how fast speed increases from minSpeed to maxSpeed).";
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};
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buttonMapping = mkOption {
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type = types.nullOr types.str;
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default = null;
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description =
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''
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Sets the logical button mapping for this device, see XSetPointerMapping(3). The string must
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be a space-separated list of button mappings in the order of the logical buttons on the
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device, starting with button 1. The default mapping is "1 2 3 ... 32". A mapping of 0 deac‐
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tivates the button. Multiple buttons can have the same mapping. Invalid mapping strings are
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discarded and the default mapping is used for all buttons. Buttons not specified in the
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user's mapping use the default mapping. See section BUTTON MAPPING for more details.
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'';
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};
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calibrationMatrix = mkOption {
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type = types.nullOr types.str;
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default = null;
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description =
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''
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A string of 9 space-separated floating point numbers. Sets the calibration matrix to the
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3x3 matrix where the first row is (abc), the second row is (def) and the third row is (ghi).
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'';
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};
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clickMethod = mkOption {
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type = types.nullOr (types.enum [ "none" "buttonareas" "clickfinger" ]);
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default = null;
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description =
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''
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Enables a click method. Permitted values are <literal>none</literal>,
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<literal>buttonareas</literal>, <literal>clickfinger</literal>.
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Not all devices support all methods, if an option is unsupported,
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the default click method for this device is used.
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'';
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};
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leftHanded = mkOption {
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type = types.bool;
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default = false;
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description = "Enables left-handed button orientation, i.e. swapping left and right buttons.";
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};
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middleEmulation = mkOption {
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type = types.bool;
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default = true;
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description =
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''
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Enables middle button emulation. When enabled, pressing the left and right buttons
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simultaneously produces a middle mouse button click.
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'';
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};
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naturalScrolling = mkOption {
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type = types.bool;
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default = false;
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description = "Enables or disables natural scrolling behavior.";
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};
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scrollButton = mkOption {
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type = types.nullOr types.int;
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default = null;
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example = 1;
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description =
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''
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Designates a button as scroll button. If the ScrollMethod is button and the button is logically
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held down, x/y axis movement is converted into scroll events.
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'';
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};
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scrollMethod = mkOption {
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type = types.enum [ "twofinger" "edge" "button" "none" ];
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default = "twofinger";
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example = "edge";
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description =
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''
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Specify the scrolling method: <literal>twofinger</literal>, <literal>edge</literal>,
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<literal>button</literal>, or <literal>none</literal>
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'';
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};
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horizontalScrolling = mkOption {
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type = types.bool;
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default = true;
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description =
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''
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Disables horizontal scrolling. When disabled, this driver will discard any horizontal scroll
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events from libinput. Note that this does not disable horizontal scrolling, it merely
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discards the horizontal axis from any scroll events.
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'';
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};
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sendEventsMode = mkOption {
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type = types.enum [ "disabled" "enabled" "disabled-on-external-mouse" ];
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default = "enabled";
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example = "disabled";
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description =
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''
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Sets the send events mode to <literal>disabled</literal>, <literal>enabled</literal>,
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or <literal>disabled-on-external-mouse</literal>
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'';
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};
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tapping = mkOption {
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type = types.bool;
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default = true;
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description =
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''
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Enables or disables tap-to-click behavior.
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'';
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};
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tappingDragLock = mkOption {
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type = types.bool;
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default = true;
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description =
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''
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Enables or disables drag lock during tapping behavior. When enabled, a finger up during tap-
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and-drag will not immediately release the button. If the finger is set down again within the
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timeout, the draging process continues.
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'';
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};
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disableWhileTyping = mkOption {
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type = types.bool;
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default = false;
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description =
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''
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Disable input method while typing.
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'';
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};
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additionalOptions = mkOption {
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type = types.lines;
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default = "";
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example =
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''
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Option "DragLockButtons" "L1 B1 L2 B2"
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'';
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description = "Additional options for libinput touchpad driver.";
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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.xserver.modules = [ pkgs.xorg.xf86inputlibinput ];
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environment.systemPackages = [ pkgs.xorg.xf86inputlibinput ];
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environment.etc = [
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(let cfgPath = "X11/xorg.conf.d/40-libinput.conf"; in {
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source = pkgs.xorg.xf86inputlibinput.out + "/share/" + cfgPath;
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target = cfgPath;
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})
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];
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services.udev.packages = [ pkgs.libinput.out ];
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services.xserver.config =
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''
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# Automatically enable the libinput driver for all touchpads.
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Section "InputClass"
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Identifier "libinputConfiguration"
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MatchIsTouchpad "on"
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${optionalString (cfg.dev != null) ''MatchDevicePath "${cfg.dev}"''}
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Driver "libinput"
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Option "AccelProfile" "${cfg.accelProfile}"
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${optionalString (cfg.accelSpeed != null) ''Option "AccelSpeed" "${cfg.accelSpeed}"''}
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${optionalString (cfg.buttonMapping != null) ''Option "ButtonMapping" "${cfg.buttonMapping}"''}
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${optionalString (cfg.calibrationMatrix != null) ''Option "CalibrationMatrix" "${cfg.calibrationMatrix}"''}
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${optionalString (cfg.clickMethod != null) ''Option "ClickMethod" "${cfg.clickMethod}"''}
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Option "LeftHanded" "${xorgBool cfg.leftHanded}"
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Option "MiddleEmulation" "${xorgBool cfg.middleEmulation}"
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Option "NaturalScrolling" "${xorgBool cfg.naturalScrolling}"
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${optionalString (cfg.scrollButton != null) ''Option "ScrollButton" "${toString cfg.scrollButton}"''}
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Option "ScrollMethod" "${cfg.scrollMethod}"
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Option "HorizontalScrolling" "${xorgBool cfg.horizontalScrolling}"
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Option "SendEventsMode" "${cfg.sendEventsMode}"
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Option "Tapping" "${xorgBool cfg.tapping}"
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Option "TappingDragLock" "${xorgBool cfg.tappingDragLock}"
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Option "DisableWhileTyping" "${xorgBool cfg.disableWhileTyping}"
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${cfg.additionalOptions}
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EndSection
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'';
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assertions = [
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# already present in synaptics.nix
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/* {
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assertion = !config.services.xserver.synaptics.enable;
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message = "Synaptics and libinput are incompatible, you cannot enable both (in services.xserver).";
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} */
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];
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};
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}
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