feat(settings): add Mouse & Touchpad settings tab for Niri (#2905)

* feat(settings): add Mouse & Trackpad settings tab

* style(settings): clarify touchpad natural scroll description

* chore(settings): update settings search index

* refactor(settings): unify Mouse & Trackpad terminology to Mouse & Touchpad

* feat(setup): deploy default dms/input.kdl on setup

* style(niri): restore include section comment in base config template

* refactor(niri): remove redundant input block from base config template

* refactor(niri): restore keyboard and non-mouse input config to base template

* feat(settings): add touchpad disable-on-external-mouse toggle

* feat(settings): add left-handed, scroll-factor and dwt options

* feat(settings): add middle-emulation, scroll-method, tap-and-drag and drag-lock options

* refactor(settings): re-order mouse and touchpad UI options logically

core/cmd/dms/commands_config.go

@@ -40,6 +40,7 @@ var resolveIncludeCmd = &cobra.Command{
 				"layout.kdl",
 				"outputs.kdl",
 				"binds.kdl",
+				"input.kdl",
 				"cursor.conf",
 				"layout.conf",
 				"outputs.conf",

core/cmd/dms/commands_setup.go

@@ -143,6 +143,10 @@ var dmsConfigSpecs = map[string]dmsConfigSpec{
 		niriFile:    "alttab.kdl",
 		niriContent: func(_ string) string { return config.NiriAlttabConfig },
 	},
+	"input": {
+		niriFile:    "input.kdl",
+		niriContent: func(_ string) string { return config.NiriInputConfig },
+	},
 	"outputs": {
 		niriFile:     "outputs.kdl",
 		hyprFile:     "outputs.lua",

core/internal/config/deployer.go

@@ -264,6 +264,7 @@ func (cd *ConfigDeployer) deployNiriDmsConfigs(dmsDir, terminalCommand string) e
 		{"layout.kdl", NiriLayoutConfig},
 		{"alttab.kdl", NiriAlttabConfig},
 		{"binds.kdl", strings.ReplaceAll(NiriBindsConfig, "{{TERMINAL_COMMAND}}", terminalCommand)},
+		{"input.kdl", NiriInputConfig},
 		{"outputs.kdl", ""},
 		{"cursor.kdl", ""},
 		{"windowrules.kdl", ""},

core/internal/config/embedded/niri-input.kdl

@@ -0,0 +1,15 @@
+// ! DO NOT EDIT !
+// ! AUTO-GENERATED BY DMS !
+// ! CHANGES WILL BE OVERWRITTEN !
+// ! PLACE YOUR CUSTOM CONFIGURATION ELSEWHERE !
+
+input {
+    mouse {
+        accel-speed 0.0
+    }
+    touchpad {
+        tap
+        accel-speed 0.0
+        natural-scroll
+    }
+}

core/internal/config/embedded/niri.kdl

@@ -34,31 +34,6 @@ input {
         numlock
     }
 
-    // Next sections include libinput settings.
-    // Omitting settings disables them, or leaves them at their default values.
-    // All commented-out settings here are examples, not defaults.
-    touchpad {
-        // off
-        tap
-        // dwt
-        // dwtp
-        // drag false
-        // drag-lock
-        natural-scroll
-        // accel-speed 0.2
-        // accel-profile "flat"
-        // scroll-method "two-finger"
-        // disabled-on-external-mouse
-    }
-
-    mouse {
-        // off
-        // natural-scroll
-        // accel-speed 0.2
-        // accel-profile "flat"
-        // scroll-method "no-scroll"
-    }
-
     trackpoint {
         // off
         // natural-scroll
@@ -77,6 +52,7 @@ input {
     // Setting max-scroll-amount="0%" makes it work only on windows already fully on screen.
     // focus-follows-mouse max-scroll-amount="0%"
 }
+
 // You can configure outputs by their name, which you can find
 // by running `niri msg outputs` while inside a niri instance.
 // The built-in laptop monitor is usually called "eDP-1".
@@ -271,3 +247,4 @@ include optional=true "dms/alttab.kdl"
 include optional=true "dms/binds.kdl"
 include optional=true "dms/outputs.kdl"
 include optional=true "dms/cursor.kdl"
+include optional=true "dms/input.kdl"

core/internal/config/niri.go

@@ -16,3 +16,6 @@ var NiriAlttabConfig string
 
 //go:embed embedded/niri-binds.kdl
 var NiriBindsConfig string
+
+//go:embed embedded/niri-input.kdl
+var NiriInputConfig string

quickshell/Common/SettingsData.qml

@@ -184,6 +184,24 @@ Singleton {
     property int mangoLayoutRadiusOverride: -1
     property int mangoLayoutBorderSize: -1
     property bool mangoTrackpadNaturalScrolling: true
+    property string mouseAccelProfile: "default"
+    property real mouseAccelSpeed: 0.0
+    property bool mouseLeftHanded: false
+    property bool mouseMiddleEmulation: false
+    property bool mouseNaturalScroll: false
+    property real mouseScrollFactor: 1.0
+    property string mouseScrollMethod: "default"
+    property string touchpadAccelProfile: "default"
+    property real touchpadAccelSpeed: 0.0
+    property bool touchpadDisableOnExternalMouse: false
+    property bool touchpadDisableWhileTyping: true
+    property bool touchpadDragLock: false
+    property bool touchpadMiddleEmulation: false
+    property bool touchpadNaturalScroll: true
+    property real touchpadScrollFactor: 1.0
+    property string touchpadScrollMethod: "default"
+    property bool touchpadTapAndDrag: true
+    property bool touchpadTapToClick: true
 
     property int firstDayOfWeek: -1
     property bool showWeekNumber: false
@@ -1479,6 +1497,13 @@ Singleton {
             MangoService.generateLayoutConfig();
     }
 
+    function updateCompositorInput() {
+        if (typeof CompositorService === "undefined")
+            return;
+        if (CompositorService.isNiri && typeof NiriService !== "undefined")
+            NiriService.generateNiriInputConfig();
+    }
+
     function updateFrameCompositorLayout() {
         // Generate before begin() so compositor readiness is already pending at transitionRequested
         if (typeof CompositorService !== "undefined") {
@@ -1707,6 +1732,7 @@ Singleton {
             "applyStoredTheme": applyStoredTheme,
             "regenSystemThemes": regenSystemThemes,
             "updateCompositorLayout": updateCompositorLayout,
+            "updateCompositorInput": updateCompositorInput,
             "applyStoredIconTheme": applyStoredIconTheme,
             "updateBarConfigs": updateBarConfigs,
             "updateCompositorCursor": updateCompositorCursor,

quickshell/Common/settings/SettingsSpec.js

@@ -38,6 +38,24 @@ var SPEC = {
     mangoLayoutRadiusOverride: { def: -1, onChange: "updateCompositorLayout" },
     mangoLayoutBorderSize: { def: -1, onChange: "updateCompositorLayout" },
     mangoTrackpadNaturalScrolling: { def: true, onChange: "updateCompositorCursor" },
+    mouseAccelProfile: { def: "default", onChange: "updateCompositorInput" },
+    mouseAccelSpeed: { def: 0.0, onChange: "updateCompositorInput" },
+    mouseLeftHanded: { def: false, onChange: "updateCompositorInput" },
+    mouseMiddleEmulation: { def: false, onChange: "updateCompositorInput" },
+    mouseNaturalScroll: { def: false, onChange: "updateCompositorInput" },
+    mouseScrollFactor: { def: 1.0, onChange: "updateCompositorInput" },
+    mouseScrollMethod: { def: "default", onChange: "updateCompositorInput" },
+    touchpadAccelProfile: { def: "default", onChange: "updateCompositorInput" },
+    touchpadAccelSpeed: { def: 0.0, onChange: "updateCompositorInput" },
+    touchpadDisableOnExternalMouse: { def: false, onChange: "updateCompositorInput" },
+    touchpadDisableWhileTyping: { def: true, onChange: "updateCompositorInput" },
+    touchpadDragLock: { def: false, onChange: "updateCompositorInput" },
+    touchpadMiddleEmulation: { def: false, onChange: "updateCompositorInput" },
+    touchpadNaturalScroll: { def: true, onChange: "updateCompositorInput" },
+    touchpadScrollFactor: { def: 1.0, onChange: "updateCompositorInput" },
+    touchpadScrollMethod: { def: "default", onChange: "updateCompositorInput" },
+    touchpadTapAndDrag: { def: true, onChange: "updateCompositorInput" },
+    touchpadTapToClick: { def: true, onChange: "updateCompositorInput" },
 
     firstDayOfWeek: { def: -1 },
     showWeekNumber: { def: false },

quickshell/Modals/Settings/SettingsContent.qml

@@ -718,5 +718,20 @@ FocusScope {
                     Qt.callLater(() => item.forceActiveFocus());
             }
         }
+
+        Loader {
+            id: mouseTouchpadLoader
+            anchors.fill: parent
+            active: root.currentIndex === 44
+            visible: active
+            focus: active
+
+            sourceComponent: MouseTouchpadTab {}
+
+            onActiveChanged: {
+                if (active && item)
+                    Qt.callLater(() => item.forceActiveFocus());
+            }
+        }
     }
 }

quickshell/Modals/Settings/SettingsSidebar.qml

@@ -319,6 +319,13 @@ Rectangle {
                     "icon": "headphones",
                     "tabIndex": 29
                 },
+                {
+                    "id": "mouse_touchpad",
+                    "text": I18n.tr("Mouse & Touchpad"),
+                    "icon": "mouse",
+                    "tabIndex": 44,
+                    "niriOnly": true
+                },
                 {
                     "id": "locale",
                     "text": I18n.tr("Locale"),

quickshell/Modules/Settings/MouseTouchpadTab.qml

@@ -0,0 +1,412 @@
+import QtCore
+import QtQuick
+import qs.Common
+import qs.Services
+import qs.Widgets
+import qs.Modules.Settings.Widgets
+import "../../Common/ConfigIncludeResolve.js" as ConfigIncludeResolve
+
+Item {
+    id: root
+
+    LayoutMirroring.enabled: I18n.isRtl
+    LayoutMirroring.childrenInherit: true
+
+    property var inputIncludeStatus: ({
+            "exists": false,
+            "included": false,
+            "configFormat": "",
+            "readOnly": false
+        })
+    property bool checkingInclude: false
+    property bool fixingInclude: false
+
+    function getInputConfigPaths() {
+        const configDir = Paths.strip(StandardPaths.writableLocation(StandardPaths.ConfigLocation));
+        if (CompositorService.compositor !== "niri")
+            return null;
+        return {
+            "configFile": configDir + "/niri/config.kdl",
+            "layoutFile": configDir + "/niri/dms/input.kdl",
+            "grepPattern": 'include.*"dms/input.kdl"',
+            "includeLine": 'include "dms/input.kdl"'
+        };
+    }
+
+    function checkInputIncludeStatus() {
+        if (CompositorService.compositor !== "niri") {
+            inputIncludeStatus = {
+                "exists": false,
+                "included": false,
+                "configFormat": "",
+                "readOnly": false
+            };
+            return;
+        }
+
+        checkingInclude = true;
+        Proc.runCommand("check-input-include", [Proc.dmsBin, "config", "resolve-include", "niri", "input.kdl"], (output, exitCode) => {
+            checkingInclude = false;
+            if (exitCode !== 0) {
+                inputIncludeStatus = {
+                    "exists": false,
+                    "included": false,
+                    "configFormat": "",
+                    "readOnly": false
+                };
+                return;
+            }
+            try {
+                inputIncludeStatus = JSON.parse(output.trim());
+            } catch (e) {
+                inputIncludeStatus = {
+                    "exists": false,
+                    "included": false,
+                    "configFormat": "",
+                    "readOnly": false
+                };
+            }
+        });
+    }
+
+    function fixInputInclude() {
+        const paths = getInputConfigPaths();
+        if (!paths)
+            return;
+
+        fixingInclude = true;
+        const unixTime = Math.floor(Date.now() / 1000);
+        const backupFile = paths.configFile + ".backup" + unixTime;
+        const script = ConfigIncludeResolve.buildRepairScript({
+            configFile: paths.configFile,
+            backupFile: backupFile,
+            fragmentFile: paths.layoutFile,
+            grepPattern: paths.grepPattern,
+            includeLine: paths.includeLine
+        });
+        Proc.runCommand("fix-input-include", ["sh", "-c", script], (output, exitCode) => {
+            fixingInclude = false;
+            if (exitCode !== 0)
+                return;
+            checkInputIncludeStatus();
+            SettingsData.updateCompositorInput();
+        });
+    }
+
+    Component.onCompleted: {
+        if (CompositorService.isNiri) {
+            checkInputIncludeStatus();
+        }
+    }
+
+    DankFlickable {
+        anchors.fill: parent
+        clip: true
+        contentHeight: settingsColumn.height + Theme.spacingXL
+        contentWidth: width
+
+        Column {
+            id: settingsColumn
+
+            topPadding: 4
+            width: Math.min(550, parent.width - Theme.spacingL * 2)
+            anchors.horizontalCenter: parent.horizontalCenter
+            spacing: Theme.spacingXL
+
+            StyledRect {
+                id: warningBox
+                width: parent.width
+                height: warningContent.implicitHeight + Theme.spacingL * 2
+                radius: Theme.cornerRadius
+
+                readonly property bool showSetup: !root.inputIncludeStatus.included
+
+                color: showSetup ? Theme.withAlpha(Theme.primary, 0.15) : Theme.withAlpha(Theme.primary, 0)
+                border.color: showSetup ? Theme.withAlpha(Theme.primary, 0.3) : Theme.withAlpha(Theme.primary, 0)
+                border.width: 1
+                visible: showSetup && !root.checkingInclude && CompositorService.isNiri
+
+                Row {
+                    id: warningContent
+                    anchors.fill: parent
+                    anchors.margins: Theme.spacingL
+                    spacing: Theme.spacingM
+
+                    DankIcon {
+                        name: "warning"
+                        size: Theme.iconSize
+                        color: Theme.primary
+                        anchors.verticalCenter: parent.verticalCenter
+                    }
+
+                    Column {
+                        width: parent.width - Theme.iconSize - (fixButton.visible ? fixButton.width + Theme.spacingM : 0) - Theme.spacingM
+                        spacing: Theme.spacingXS
+                        anchors.verticalCenter: parent.verticalCenter
+
+                        StyledText {
+                            text: I18n.tr("First Time Setup")
+                            font.pixelSize: Theme.fontSizeMedium
+                            font.weight: Font.Medium
+                            color: Theme.primary
+                            width: parent.width
+                            horizontalAlignment: Text.AlignLeft
+                        }
+
+                        StyledText {
+                            text: I18n.tr("Click 'Setup' to create %1 and add include to your compositor config.").arg("dms/input")
+                            font.pixelSize: Theme.fontSizeSmall
+                            color: Theme.surfaceVariantText
+                            wrapMode: Text.WordWrap
+                            width: parent.width
+                            horizontalAlignment: Text.AlignLeft
+                        }
+                    }
+
+                    DankButton {
+                        id: fixButton
+                        visible: warningBox.showSetup
+                        text: root.fixingInclude ? I18n.tr("Setting up...") : I18n.tr("Setup")
+                        backgroundColor: Theme.primary
+                        textColor: Theme.primaryText
+                        enabled: !root.fixingInclude
+                        anchors.verticalCenter: parent.verticalCenter
+                        onClicked: root.fixInputInclude()
+                    }
+                }
+            }
+
+            SettingsCard {
+                width: parent.width
+                tags: ["mouse", "input", "sensitivity", "acceleration", "pointer"]
+                title: I18n.tr("Mouse Settings")
+                settingKey: "mouseSettings"
+                iconName: "mouse"
+
+                SettingsToggleRow {
+                    tags: ["mouse", "left", "handed", "button", "swap"]
+                    settingKey: "mouseLeftHanded"
+                    text: I18n.tr("Left-Handed Mode")
+                    description: I18n.tr("Swap primary and secondary mouse buttons")
+                    checked: SettingsData.mouseLeftHanded
+                    onToggled: checked => SettingsData.set("mouseLeftHanded", checked)
+                }
+
+                SettingsSliderRow {
+                    tags: ["mouse", "sensitivity", "speed", "accel"]
+                    settingKey: "mouseAccelSpeed"
+                    text: I18n.tr("Pointer Speed")
+                    description: I18n.tr("Adjust pointer sensitivity speed")
+                    value: Math.round(SettingsData.mouseAccelSpeed * 10)
+                    minimum: -10
+                    maximum: 10
+                    step: 1
+                    defaultValue: 0
+                    onSliderValueChanged: newValue => SettingsData.set("mouseAccelSpeed", newValue / 10.0)
+                }
+
+                SettingsButtonGroupRow {
+                    tags: ["mouse", "acceleration", "profile"]
+                    settingKey: "mouseAccelProfile"
+                    text: I18n.tr("Acceleration Profile")
+                    description: I18n.tr("Flat uses constant speed; Adaptive scales with movement speed")
+                    model: [I18n.tr("Default"), I18n.tr("Flat"), I18n.tr("Adaptive")]
+                    currentIndex: {
+                        if (SettingsData.mouseAccelProfile === "flat") return 1;
+                        if (SettingsData.mouseAccelProfile === "adaptive") return 2;
+                        return 0;
+                    }
+                    onSelectionChanged: (index, selected) => {
+                        if (!selected) return;
+                        const profiles = ["default", "flat", "adaptive"];
+                        SettingsData.set("mouseAccelProfile", profiles[index]);
+                    }
+                }
+
+                SettingsToggleRow {
+                    tags: ["mouse", "natural", "scroll", "direction"]
+                    settingKey: "mouseNaturalScroll"
+                    text: I18n.tr("Natural Scrolling")
+                    description: I18n.tr("Reverse mouse wheel scrolling direction")
+                    checked: SettingsData.mouseNaturalScroll
+                    onToggled: checked => SettingsData.set("mouseNaturalScroll", checked)
+                }
+
+                SettingsSliderRow {
+                    tags: ["mouse", "scroll", "speed", "factor"]
+                    settingKey: "mouseScrollFactor"
+                    text: I18n.tr("Scrolling Speed")
+                    description: I18n.tr("Adjust scrolling sensitivity multiplier")
+                    value: Math.round(SettingsData.mouseScrollFactor * 10)
+                    minimum: 1
+                    maximum: 30
+                    step: 1
+                    defaultValue: 10
+                    onSliderValueChanged: newValue => SettingsData.set("mouseScrollFactor", newValue / 10.0)
+                }
+
+                SettingsButtonGroupRow {
+                    tags: ["mouse", "scroll", "method"]
+                    settingKey: "mouseScrollMethod"
+                    text: I18n.tr("Scroll Method")
+                    description: I18n.tr("Choose when to generate scrolling events")
+                    model: [I18n.tr("Default"), I18n.tr("No Scroll"), I18n.tr("On Button Down")]
+                    currentIndex: {
+                        if (SettingsData.mouseScrollMethod === "no-scroll") return 1;
+                        if (SettingsData.mouseScrollMethod === "on-button-down") return 2;
+                        return 0;
+                    }
+                    onSelectionChanged: (index, selected) => {
+                        if (!selected) return;
+                        const methods = ["default", "no-scroll", "on-button-down"];
+                        SettingsData.set("mouseScrollMethod", methods[index]);
+                    }
+                }
+
+                SettingsToggleRow {
+                    tags: ["mouse", "middle", "click", "emulation"]
+                    settingKey: "mouseMiddleEmulation"
+                    text: I18n.tr("Middle Click Emulation")
+                    description: I18n.tr("Emulate middle click by pressing left and right buttons")
+                    checked: SettingsData.mouseMiddleEmulation
+                    onToggled: checked => SettingsData.set("mouseMiddleEmulation", checked)
+                }
+            }
+
+            SettingsCard {
+                width: parent.width
+                tags: ["touchpad", "input", "sensitivity", "tap", "click", "natural"]
+                title: I18n.tr("Touchpad Settings")
+                settingKey: "touchpadSettings"
+                iconName: "trackpad_input_2"
+
+                SettingsToggleRow {
+                    tags: ["touchpad", "tap", "click"]
+                    settingKey: "touchpadTapToClick"
+                    text: I18n.tr("Tap to Click")
+                    description: I18n.tr("Tap the touchpad surface to trigger left click clicks")
+                    checked: SettingsData.touchpadTapToClick
+                    onToggled: checked => SettingsData.set("touchpadTapToClick", checked)
+                }
+
+                SettingsToggleRow {
+                    tags: ["touchpad", "tap", "drag"]
+                    settingKey: "touchpadTapAndDrag"
+                    text: I18n.tr("Tap and Drag")
+                    description: I18n.tr("Tap and drag on the touchpad to move items")
+                    checked: SettingsData.touchpadTapAndDrag
+                    onToggled: checked => SettingsData.set("touchpadTapAndDrag", checked)
+                }
+
+                SettingsToggleRow {
+                    tags: ["touchpad", "drag", "lock"]
+                    settingKey: "touchpadDragLock"
+                    text: I18n.tr("Drag Lock")
+                    description: I18n.tr("Keep dragging when finger is briefly lifted")
+                    checked: SettingsData.touchpadDragLock
+                    onToggled: checked => SettingsData.set("touchpadDragLock", checked)
+                }
+
+                SettingsSliderRow {
+                    tags: ["touchpad", "sensitivity", "speed", "accel"]
+                    settingKey: "touchpadAccelSpeed"
+                    text: I18n.tr("Touchpad Speed")
+                    description: I18n.tr("Adjust touchpad pointer speed")
+                    value: Math.round(SettingsData.touchpadAccelSpeed * 10)
+                    minimum: -10
+                    maximum: 10
+                    step: 1
+                    defaultValue: 0
+                    onSliderValueChanged: newValue => SettingsData.set("touchpadAccelSpeed", newValue / 10.0)
+                }
+
+                SettingsButtonGroupRow {
+                    tags: ["touchpad", "acceleration", "profile"]
+                    settingKey: "touchpadAccelProfile"
+                    text: I18n.tr("Acceleration Profile")
+                    description: I18n.tr("Flat uses constant speed; Adaptive scales with movement speed")
+                    model: [I18n.tr("Default"), I18n.tr("Flat"), I18n.tr("Adaptive")]
+                    currentIndex: {
+                        if (SettingsData.touchpadAccelProfile === "flat") return 1;
+                        if (SettingsData.touchpadAccelProfile === "adaptive") return 2;
+                        return 0;
+                    }
+                    onSelectionChanged: (index, selected) => {
+                        if (!selected) return;
+                        const profiles = ["default", "flat", "adaptive"];
+                        SettingsData.set("touchpadAccelProfile", profiles[index]);
+                    }
+                }
+
+                SettingsToggleRow {
+                    tags: ["touchpad", "natural", "scroll", "direction"]
+                    settingKey: "touchpadNaturalScroll"
+                    text: I18n.tr("Natural Scrolling")
+                    description: I18n.tr("Reverse two-finger scrolling direction")
+                    checked: SettingsData.touchpadNaturalScroll
+                    onToggled: checked => SettingsData.set("touchpadNaturalScroll", checked)
+                }
+
+                SettingsSliderRow {
+                    tags: ["touchpad", "scroll", "speed", "factor"]
+                    settingKey: "touchpadScrollFactor"
+                    text: I18n.tr("Scrolling Speed")
+                    description: I18n.tr("Adjust scrolling sensitivity multiplier")
+                    value: Math.round(SettingsData.touchpadScrollFactor * 10)
+                    minimum: 1
+                    maximum: 30
+                    step: 1
+                    defaultValue: 10
+                    onSliderValueChanged: newValue => SettingsData.set("touchpadScrollFactor", newValue / 10.0)
+                }
+
+                SettingsButtonGroupRow {
+                    tags: ["touchpad", "scroll", "method"]
+                    settingKey: "touchpadScrollMethod"
+                    text: I18n.tr("Scroll Method")
+                    description: I18n.tr("Choose when to generate scrolling events")
+                    model: [I18n.tr("Default"), I18n.tr("Two Finger"), I18n.tr("Edge"), I18n.tr("No Scroll"), I18n.tr("On Button Down")]
+                    currentIndex: {
+                        if (SettingsData.touchpadScrollMethod === "two-finger") return 1;
+                        if (SettingsData.touchpadScrollMethod === "edge") return 2;
+                        if (SettingsData.touchpadScrollMethod === "no-scroll") return 3;
+                        if (SettingsData.touchpadScrollMethod === "on-button-down") return 4;
+                        return 0;
+                    }
+                    onSelectionChanged: (index, selected) => {
+                        if (!selected) return;
+                        const methods = ["default", "two-finger", "edge", "no-scroll", "on-button-down"];
+                        SettingsData.set("touchpadScrollMethod", methods[index]);
+                    }
+                }
+
+                SettingsToggleRow {
+                    tags: ["touchpad", "disable", "typing", "dwt"]
+                    settingKey: "touchpadDisableWhileTyping"
+                    text: I18n.tr("Disable While Typing")
+                    description: I18n.tr("Prevent accidental cursor jumps while typing")
+                    checked: SettingsData.touchpadDisableWhileTyping
+                    onToggled: checked => SettingsData.set("touchpadDisableWhileTyping", checked)
+                }
+
+                SettingsToggleRow {
+                    tags: ["touchpad", "disable", "external", "mouse"]
+                    settingKey: "touchpadDisableOnExternalMouse"
+                    text: I18n.tr("Disable on External Mouse")
+                    description: I18n.tr("Disable touchpad when an external mouse is connected")
+                    checked: SettingsData.touchpadDisableOnExternalMouse
+                    onToggled: checked => SettingsData.set("touchpadDisableOnExternalMouse", checked)
+                }
+
+                SettingsToggleRow {
+                    tags: ["touchpad", "middle", "click", "emulation"]
+                    settingKey: "touchpadMiddleEmulation"
+                    text: I18n.tr("Middle Click Emulation")
+                    description: I18n.tr("Emulate middle click by pressing left and right buttons")
+                    checked: SettingsData.touchpadMiddleEmulation
+                    onToggled: checked => SettingsData.set("touchpadMiddleEmulation", checked)
+                }
+            }
+        }
+    }
+}

quickshell/Services/NiriService.qml

@@ -73,6 +73,7 @@ Singleton {
     Component.onCompleted: {
         fetchOutputs();
         Paths.mkdir(screenshotsDir);
+        generateNiriInputConfig();
     }
 
     Timer {
@@ -105,6 +106,15 @@ Singleton {
         }
     }
 
+    Connections {
+        target: CompositorService
+        function onIsNiriChanged() {
+            if (CompositorService.isNiri) {
+                generateNiriInputConfig();
+            }
+        }
+    }
+
     Process {
         id: validateProcess
         command: ["niri", "validate"]
@@ -175,6 +185,20 @@ Singleton {
         }
     }
 
+    Process {
+        id: writeInputProcess
+        property string inputContent: ""
+        property string inputPath: ""
+
+        onExited: exitCode => {
+            if (exitCode === 0) {
+                log.info("Generated input config at", inputPath);
+                return;
+            }
+            log.warn("Failed to write input config, exit code:", exitCode);
+        }
+    }
+
     Process {
         id: writeCursorProcess
         property string cursorContent: ""
@@ -1261,7 +1285,7 @@ window-rule {
             writeAlttabProcess.running = true;
         }
 
-        for (const name of ["outputs", "binds", "cursor", "windowrules", "colors", "alttab", "layout"]) {
+        for (const name of ["outputs", "binds", "cursor", "windowrules", "colors", "alttab", "layout", "input"]) {
             const path = niriDmsDir + "/" + name + ".kdl";
             Proc.runCommand("niri-ensure-" + name, ["sh", "-c", `mkdir -p "${niriDmsDir}" && [ ! -f "${path}" ] && touch "${path}" || true`], (output, exitCode) => {
                 if (exitCode !== 0)
@@ -1641,6 +1665,129 @@ window-rule {
         });
     }
 
+    function generateNiriInputConfig() {
+        if (!CompositorService.isNiri)
+            return;
+
+        const defaultMouseLeftHanded = false;
+        const defaultMouseMiddleEmulation = false;
+        const defaultMouseNaturalScroll = false;
+        const defaultMouseProfile = "default";
+        const defaultMouseScrollFactor = 1.0;
+        const defaultMouseScrollMethod = "default";
+        const defaultMouseSpeed = 0.0;
+
+        const defaultTouchpadDisableOnExternalMouse = false;
+        const defaultTouchpadDisableWhileTyping = true;
+        const defaultTouchpadDragLock = false;
+        const defaultTouchpadMiddleEmulation = false;
+        const defaultTouchpadNaturalScroll = true;
+        const defaultTouchpadProfile = "default";
+        const defaultTouchpadScrollFactor = 1.0;
+        const defaultTouchpadScrollMethod = "default";
+        const defaultTouchpadSpeed = 0.0;
+        const defaultTouchpadTap = true;
+        const defaultTouchpadTapAndDrag = true;
+
+        const mouseLeftHanded = typeof SettingsData !== "undefined" ? SettingsData.mouseLeftHanded : defaultMouseLeftHanded;
+        const mouseMiddleEmulation = typeof SettingsData !== "undefined" ? SettingsData.mouseMiddleEmulation : defaultMouseMiddleEmulation;
+        const mouseNaturalScroll = typeof SettingsData !== "undefined" ? SettingsData.mouseNaturalScroll : defaultMouseNaturalScroll;
+        const mouseProfile = typeof SettingsData !== "undefined" ? SettingsData.mouseAccelProfile : defaultMouseProfile;
+        const mouseScrollFactor = typeof SettingsData !== "undefined" ? SettingsData.mouseScrollFactor : defaultMouseScrollFactor;
+        const mouseScrollMethod = typeof SettingsData !== "undefined" ? SettingsData.mouseScrollMethod : defaultMouseScrollMethod;
+        const mouseSpeed = typeof SettingsData !== "undefined" ? SettingsData.mouseAccelSpeed : defaultMouseSpeed;
+
+        const touchpadDisableOnExternalMouse = typeof SettingsData !== "undefined" ? SettingsData.touchpadDisableOnExternalMouse : defaultTouchpadDisableOnExternalMouse;
+        const touchpadDisableWhileTyping = typeof SettingsData !== "undefined" ? SettingsData.touchpadDisableWhileTyping : defaultTouchpadDisableWhileTyping;
+        const touchpadDragLock = typeof SettingsData !== "undefined" ? SettingsData.touchpadDragLock : defaultTouchpadDragLock;
+        const touchpadMiddleEmulation = typeof SettingsData !== "undefined" ? SettingsData.touchpadMiddleEmulation : defaultTouchpadMiddleEmulation;
+        const touchpadNaturalScroll = typeof SettingsData !== "undefined" ? SettingsData.touchpadNaturalScroll : defaultTouchpadNaturalScroll;
+        const touchpadProfile = typeof SettingsData !== "undefined" ? SettingsData.touchpadAccelProfile : defaultTouchpadProfile;
+        const touchpadScrollFactor = typeof SettingsData !== "undefined" ? SettingsData.touchpadScrollFactor : defaultTouchpadScrollFactor;
+        const touchpadScrollMethod = typeof SettingsData !== "undefined" ? SettingsData.touchpadScrollMethod : defaultTouchpadScrollMethod;
+        const touchpadSpeed = typeof SettingsData !== "undefined" ? SettingsData.touchpadAccelSpeed : defaultTouchpadSpeed;
+        const touchpadTap = typeof SettingsData !== "undefined" ? SettingsData.touchpadTapToClick : defaultTouchpadTap;
+        const touchpadTapAndDrag = typeof SettingsData !== "undefined" ? SettingsData.touchpadTapAndDrag : defaultTouchpadTapAndDrag;
+
+        const dmsWarning = `// ! DO NOT EDIT !
+// ! AUTO-GENERATED BY DMS !
+// ! CHANGES WILL BE OVERWRITTEN !
+// ! PLACE YOUR CUSTOM CONFIGURATION ELSEWHERE !
+
+`;
+
+        let inputContent = dmsWarning + "input {\n";
+
+        // Mouse block
+        inputContent += "    mouse {\n";
+        inputContent += `        accel-speed ${mouseSpeed.toFixed(1)}\n`;
+        if (mouseProfile !== "default") {
+            inputContent += `        accel-profile "${mouseProfile}"\n`;
+        }
+        if (mouseNaturalScroll) {
+            inputContent += "        natural-scroll\n";
+        }
+        if (mouseLeftHanded) {
+            inputContent += "        left-handed\n";
+        }
+        if (mouseMiddleEmulation) {
+            inputContent += "        middle-emulation\n";
+        }
+        if (mouseScrollFactor !== 1.0) {
+            inputContent += `        scroll-factor ${mouseScrollFactor.toFixed(1)}\n`;
+        }
+        if (mouseScrollMethod !== "default") {
+            inputContent += `        scroll-method "${mouseScrollMethod}"\n`;
+        }
+        inputContent += "    }\n";
+
+        // Touchpad block
+        inputContent += "    touchpad {\n";
+        if (touchpadTap) {
+            inputContent += "        tap\n";
+        }
+        inputContent += `        accel-speed ${touchpadSpeed.toFixed(1)}\n`;
+        if (touchpadProfile !== "default") {
+            inputContent += `        accel-profile "${touchpadProfile}"\n`;
+        }
+        if (touchpadNaturalScroll) {
+            inputContent += "        natural-scroll\n";
+        }
+        if (touchpadDisableOnExternalMouse) {
+            inputContent += "        disabled-on-external-mouse\n";
+        }
+        if (touchpadDisableWhileTyping) {
+            inputContent += "        dwt\n";
+        }
+        if (touchpadMiddleEmulation) {
+            inputContent += "        middle-emulation\n";
+        }
+        if (touchpadScrollFactor !== 1.0) {
+            inputContent += `        scroll-factor ${touchpadScrollFactor.toFixed(1)}\n`;
+        }
+        if (touchpadScrollMethod !== "default") {
+            inputContent += `        scroll-method "${touchpadScrollMethod}"\n`;
+        }
+        if (!touchpadTapAndDrag) {
+            inputContent += "        drag false\n";
+        }
+        if (touchpadDragLock) {
+            inputContent += "        drag-lock\n";
+        }
+        inputContent += "    }\n";
+
+        inputContent += "}\n";
+
+        const configDir = Paths.strip(StandardPaths.writableLocation(StandardPaths.ConfigLocation));
+        const niriDmsDir = configDir + "/niri/dms";
+        const inputPath = niriDmsDir + "/input.kdl";
+
+        writeInputProcess.inputContent = inputContent;
+        writeInputProcess.inputPath = inputPath;
+        writeInputProcess.command = ["sh", "-c", `mkdir -p "${niriDmsDir}" && cat > "${inputPath}" << 'EOF'\n${inputContent}\nEOF`];
+        writeInputProcess.running = true;
+    }
+
     IpcHandler {
         function screenshot(): string {
             if (!CompositorService.isNiri) {

quickshell/translations/settings_search_index.json

@@ -9916,5 +9916,18 @@
       "widgets"
     ],
     "icon": "dashboard"
+  },
+  {
+    "section": "_tab_44",
+    "label": "Mouse & Touchpad",
+    "tabIndex": 44,
+    "category": "Settings",
+    "keywords": [
+      "mouse",
+      "settings",
+      "touchpad"
+    ],
+    "icon": "mouse",
+    "conditionKey": "isNiri"
   }
 ]