Added a Spacer widget so people can add spacing between other widgets

(as requested in ##226).
Spacer: create variable width invisible rectangle
BarWidgetSettingsDialog: add Spacer support
BarWidgetRegistry: add Spacer

Modules/Bar/Widgets/Spacer.qml

@@ -0,0 +1,56 @@
+import QtQuick
+import QtQuick.Layouts
+import Quickshell
+import qs.Commons
+import qs.Services
+import qs.Widgets
+
+Item {
+  id: root
+
+  // Widget properties passed from Bar.qml
+  property var screen
+  property real scaling: 1.0
+
+  property string barSection: ""
+  property int sectionWidgetIndex: -1
+  property int sectionWidgetsCount: 0
+
+  // Get user settings from Settings data - make it reactive
+  property var widgetSettings: {
+    var section = barSection.replace("Section", "").toLowerCase()
+    if (section && sectionWidgetIndex >= 0) {
+      var widgets = Settings.data.bar.widgets[section]
+      if (widgets && sectionWidgetIndex < widgets.length) {
+        return widgets[sectionWidgetIndex]
+      }
+    }
+    return {}
+  }
+
+  // Use settings or defaults from BarWidgetRegistry
+  readonly property int userWidth: {
+    var section = barSection.replace("Section", "").toLowerCase()
+    if (section && sectionWidgetIndex >= 0) {
+      var widgets = Settings.data.bar.widgets[section]
+      if (widgets && sectionWidgetIndex < widgets.length) {
+        return widgets[sectionWidgetIndex].width || BarWidgetRegistry.widgetMetadata["Spacer"].width
+      }
+    }
+    return BarWidgetRegistry.widgetMetadata["Spacer"].width
+  }
+
+  // Set the width based on user settings
+  implicitWidth: userWidth * scaling
+  implicitHeight: Style.barHeight * scaling
+  width: implicitWidth
+  height: implicitHeight
+
+  // Optional: Add a subtle visual indicator in debug mode
+  Rectangle {
+    anchors.fill: parent
+    color: Qt.rgba(1, 0, 0, 0.1) // Very subtle red tint
+    visible: Settings.data.general.debugMode || false
+    radius: 2 * scaling
+  }
+}

Modules/SettingsPanel/Extras/BarWidgetSettingsDialog.qml

@@ -68,6 +68,8 @@ Popup {
       sourceComponent: {
         if (settingsPopup.widgetId === "CustomButton") {
           return customButtonSettings
+        } else if (settingsPopup.widgetId === "Spacer") {
+          return spacerSettings
         }
         // Add more widget settings components here as needed
         return null
@@ -157,4 +159,28 @@ Popup {
       }
     }
   }
+
+  // Spacer settings component
+  Component {
+    id: spacerSettings
+
+    ColumnLayout {
+      spacing: Style.marginM * scaling
+
+      function saveSettings() {
+        var settings = Object.assign({}, settingsPopup.widgetData)
+        settings.width = parseInt(widthInput.text) || 20
+        return settings
+      }
+
+      NTextInput {
+        id: widthInput
+        Layout.fillWidth: true
+        label: "Width (pixels)"
+        description: "Width of the spacer in pixels."
+        text: settingsPopup.widgetData.width || "20"
+        placeholderText: "Enter width in pixels"
+      }
+    }
+  }
 }

Services/BarWidgetRegistry.qml

@@ -28,6 +28,7 @@ Singleton {
                            "PowerToggle": powerToggleComponent,
                            "ScreenRecorderIndicator": screenRecorderIndicatorComponent,
                            "SidePanelToggle": sidePanelToggleComponent,
+                           "Spacer": spacerComponent,
                            "SystemMonitor": systemMonitorComponent,
                            "Taskbar": taskbarComponent,
                            "Tray": trayComponent,
@@ -43,6 +44,11 @@ Singleton {
                                     "leftClickExec": "",
                                     "rightClickExec": "",
                                     "middleClickExec": ""
+                                  },
+                                  "Spacer": {
+                                    "allowUserSettings": true,
+                                    "icon": "space_bar",
+                                    "width": 20
                                   }
                                 })
 
@@ -101,6 +107,9 @@ Singleton {
   property Component sidePanelToggleComponent: Component {
     SidePanelToggle {}
   }
+  property Component spacerComponent: Component {
+    Spacer {}
+  }
   property Component systemMonitorComponent: Component {
     SystemMonitor {}
   }