SystemMonitor: get available disk space

Assets/settings-widgets-default.json

@@ -136,8 +136,9 @@
       "showSwapUsage": false,
       "showNetworkStats": false,
       "showDiskUsage": false,
-      "diskPath": "/",
-      "showDiskDetails": false
+      "showDiskUsageAsPercent": false,
+      "showDiskAvailable": false,
+      "diskPath": "/"
     },
     "Taskbar": {
       "onlySameOutput": true,

Modules/Panels/Settings/Bar/WidgetSettings/SystemMonitorSettings.qml

@@ -38,6 +38,8 @@ ColumnLayout {
   property bool valueShowSwapUsage: widgetData.showSwapUsage !== undefined ? widgetData.showSwapUsage : widgetMetadata.showSwapUsage
   property bool valueShowNetworkStats: widgetData.showNetworkStats !== undefined ? widgetData.showNetworkStats : widgetMetadata.showNetworkStats
   property bool valueShowDiskUsage: widgetData.showDiskUsage !== undefined ? widgetData.showDiskUsage : widgetMetadata.showDiskUsage
+  property bool valueShowDiskUsageAsPercent: widgetData.showDiskUsageAsPercent !== undefined ? widgetData.showDiskUsageAsPercent : widgetMetadata.showDiskUsageAsPercent
+  property bool valueShowDiskAvailable: widgetData.showDiskAvailable !== undefined ? widgetData.showDiskAvailable : widgetMetadata.showDiskAvailable
   property string valueDiskPath: widgetData.diskPath !== undefined ? widgetData.diskPath : widgetMetadata.diskPath
   property bool valueShowDiskDetails: widgetData.showDiskDetails !== undefined ? widgetData.showDiskDetails : widgetMetadata.showDiskDetails
 
@@ -55,8 +57,9 @@ ColumnLayout {
     settings.showSwapUsage = valueShowSwapUsage;
     settings.showNetworkStats = valueShowNetworkStats;
     settings.showDiskUsage = valueShowDiskUsage;
+    settings.showDiskUsageAsPercent = valueShowDiskUsageAsPercent;
+    settings.showDiskAvailable = valueShowDiskAvailable;
     settings.diskPath = valueDiskPath;
-    settings.showDiskDetails = valueShowDiskDetails;
 
     return settings;
   }
@@ -207,16 +210,27 @@ ColumnLayout {
   }
 
   NToggle {
-    id: showDiskDetails
+    id: showDiskUsageAsPercent
     Layout.fillWidth: true
-    label: I18n.tr("bar.system-monitor.storage-details-label")
-    description: I18n.tr("bar.system-monitor.storage-details-description")
-    checked: valueShowDiskDetails
+    label: "Disk as percentage"
+    description: "Show disk space as percentage instead of absolute values."
+    checked: valueShowDiskUsageAsPercent
     onToggled: checked => {
-                 valueShowDiskDetails = checked;
+                 valueShowDiskUsageAsPercent = checked;
+                 settingsChanged(saveSettings());
+               }
+  }
+
+  NToggle {
+    id: showDiskAvailable
+    Layout.fillWidth: true
+    label: "Disk space available"
+    description: "Shows how much disk space is available instead of how much is used."
+    checked: valueShowDiskAvailable
+    onToggled: checked => {
+                 valueShowDiskAvailable = checked;
                  settingsChanged(saveSettings());
                }
-    visible: !isVertical
   }
 
   NComboBox {

Services/System/SystemStatService.qml

@@ -30,6 +30,7 @@ Singleton {
   property real swapTotalGb: 0
   property var diskPercents: ({})
   property var diskUsedGb: ({}) // Used space in GB per mount point
+  property var diskAvailableGb: ({}) // available space in GB per mount point
   property var diskSizeGb: ({}) // Total size in GB per mount point
   property real rxSpeed: 0
   property real txSpeed: 0
@@ -385,7 +386,7 @@ Singleton {
   // --block-size=1 gives us bytes for precise GB calculation
   Process {
     id: dfProcess
-    command: ["df", "--output=target,pcent,used,size", "--block-size=1", "-x", "efivarfs"]
+    command: ["df", "--output=target,pcent,used,size,avail", "--block-size=1", "-x", "efivarfs"]
     running: false
     stdout: StdioCollector {
       onStreamFinished: {
@@ -393,6 +394,7 @@ Singleton {
         const newPercents = {};
         const newUsedGb = {};
         const newSizeGb = {};
+        const newAvailableGb = {};
         const bytesPerGb = 1024 * 1024 * 1024;
         // Start from line 1 (skip header)
         for (var i = 1; i < lines.length; i++) {
@@ -402,14 +404,17 @@ Singleton {
             const percent = parseInt(parts[1].replace(/[^0-9]/g, '')) || 0;
             const usedBytes = parseFloat(parts[2]) || 0;
             const sizeBytes = parseFloat(parts[3]) || 0;
+            const availBytes = parseFloat(parts[4]) || 0;
             newPercents[target] = percent;
             newUsedGb[target] = usedBytes / bytesPerGb;
             newSizeGb[target] = sizeBytes / bytesPerGb;
+            newAvailableGb[target] = availBytes / bytesPerGb;
           }
         }
         root.diskPercents = newPercents;
         root.diskUsedGb = newUsedGb;
         root.diskSizeGb = newSizeGb;
+        root.diskAvailableGb = newAvailableGb;
       }
     }
   }