Status Bar: Battery Percentage Toggle/Limit to Internal Batteries

Adds a setting to toggle displaying the battery percentage and also limits it to only display the internal batteries.

Battery percentage on

![Screenshot_20250319_112119](/uploads/2585d843d9fd21c368dcbb1742f036f4/Screenshot_20250319_112119.png)

Battery percentage off

![Screenshot_20250319_112137](/uploads/26d0d1ab4170d097e8b2e6893d48788c/Screenshot_20250319_112137.png)

components/mobileshell/qml/statusbar/indicators/BatteryIndicator.qml

@@ -13,6 +13,7 @@ import org.kde.kirigami 2.20 as Kirigami
 
 import org.kde.plasma.components 3.0 as PlasmaComponents
 import org.kde.plasma.workspace.components 2.0 as PW
+import org.kde.plasma.private.mobileshell.shellsettingsplugin as ShellSettings
 import org.kde.plasma.private.mobileshell as MobileShell
 import org.kde.plasma.private.battery // needed for charging state
 
@@ -24,30 +25,31 @@ RowLayout {
     ListView {
         id: batteryRepeater
 
-        property int batteryWidth: 0
-
-        spacing: root.elementSpacing
+        spacing: 0
         model: MobileShell.BatteryInfo.batteries
         orientation: ListView.Horizontal
 
         Layout.alignment: Qt.AlignVCenter
-        Layout.preferredWidth: (batteryRepeater.batteryWidth + root.elementSpacing) * batteryRepeater.count
+        Layout.preferredWidth: contentItem.childrenRect.width
         Layout.fillHeight: true
         Layout.fillWidth: false
 
         delegate: RowLayout {
+            id: batteryBase
 
-            Layout.preferredWidth: batteryRepeater.batteryWidth
+            width: (batteryBase.visible ? ((batteryLabel.visible ? batteryLabel.width : 0) + battery.width) + (ShellSettings.Settings.showBatteryPercentage ? root.elementSpacing : 0) : 0)
             Layout.fillHeight: false
             Layout.alignment: Qt.AlignVCenter
 
             height: batteryRepeater.height
 
+            visible: Type === "Battery" // only show the internal battery
+
             PW.BatteryIcon {
                 id: battery
 
                 Layout.alignment: Qt.AlignVCenter
-                height: batteryLabel.height
+                Layout.fillHeight: true
                 width: batteryLabel.height
 
                 hasBattery: PluggedIn
@@ -59,16 +61,12 @@ RowLayout {
                 id: batteryLabel
                 text: i18n("%1%", Percent)
                 Layout.alignment: Qt.AlignVCenter
+                Layout.fillHeight: true
 
                 color: Kirigami.Theme.textColor
+                visible: ShellSettings.Settings.showBatteryPercentage
                 font.pixelSize: textPixelSize
             }
-
-            Component.onCompleted: {
-                // ListView & RowLayout have problems with childrenRect size,
-                // set it here so it propagates up nicely
-                batteryRepeater.batteryWidth = batteryLabel.width + battery.width
-            }
         }
     }
 }

components/shellsettingsplugin/mobileshellsettings.cpp

@@ -33,6 +33,7 @@ MobileShellSettings::MobileShellSettings(QObject *parent)
             Q_EMIT animationsEnabledChanged();
             Q_EMIT dateInStatusBarChanged();
             Q_EMIT statusBarScaleFactorChanged();
+            Q_EMIT showBatteryPercentageChanged();
             Q_EMIT navigationPanelEnabledChanged();
             Q_EMIT alwaysShowKeyboardToggleOnNavigationPanelChanged();
             Q_EMIT keyboardButtonEnabledChanged();
@@ -114,6 +115,19 @@ void MobileShellSettings::setStatusBarScaleFactor(float statusBarScaleFactor)
     m_config->sync();
 }
 
+bool MobileShellSettings::showBatteryPercentage() const
+{
+    auto group = KConfigGroup{m_config, GENERAL_CONFIG_GROUP};
+    return group.readEntry("showBatteryPercentage", false);
+}
+
+void MobileShellSettings::setShowBatteryPercentage(bool showBatteryPercentage)
+{
+    auto group = KConfigGroup{m_config, GENERAL_CONFIG_GROUP};
+    group.writeEntry("showBatteryPercentage", showBatteryPercentage, KConfigGroup::Notify);
+    m_config->sync();
+}
+
 bool MobileShellSettings::navigationPanelEnabled() const
 {
     auto group = KConfigGroup{m_config, GENERAL_CONFIG_GROUP};
@@ -254,4 +268,4 @@ void MobileShellSettings::setLockscreenRightButtonAction(const LockscreenButtonA
     auto group = KConfigGroup{m_config, LOCKSCREEN_CONFIG_GROUP};
     group.writeEntry("lockscreenRightButtonAction", (int)action, KConfigGroup::Notify);
     m_config->sync();
-}
+}

components/shellsettingsplugin/mobileshellsettings.h

@@ -32,11 +32,11 @@ class MobileShellSettings : public QObject
     // status bar
     Q_PROPERTY(bool dateInStatusBar READ dateInStatusBar WRITE setDateInStatusBar NOTIFY dateInStatusBarChanged)
     Q_PROPERTY(float statusBarScaleFactor READ statusBarScaleFactor WRITE setStatusBarScaleFactor NOTIFY statusBarScaleFactorChanged)
+    Q_PROPERTY(bool showBatteryPercentage READ showBatteryPercentage WRITE setShowBatteryPercentage NOTIFY showBatteryPercentageChanged)
 
     // navigation panel
     Q_PROPERTY(bool navigationPanelEnabled READ navigationPanelEnabled WRITE setNavigationPanelEnabled NOTIFY navigationPanelEnabledChanged)
-    Q_PROPERTY(bool alwaysShowKeyboardToggleOnNavigationPanel READ alwaysShowKeyboardToggleOnNavigationPanel WRITE setAlwaysShowKeyboardToggleOnNavigationPanel
-                   NOTIFY alwaysShowKeyboardToggleOnNavigationPanelChanged)
+    Q_PROPERTY(bool alwaysShowKeyboardToggleOnNavigationPanel READ alwaysShowKeyboardToggleOnNavigationPanel WRITE setAlwaysShowKeyboardToggleOnNavigationPanel NOTIFY alwaysShowKeyboardToggleOnNavigationPanelChanged)
 
     // action drawer
     Q_PROPERTY(ActionDrawerMode actionDrawerTopLeftMode READ actionDrawerTopLeftMode WRITE setActionDrawerTopLeftMode NOTIFY actionDrawerTopLeftModeChanged)
@@ -49,10 +49,8 @@ class MobileShellSettings : public QObject
     Q_PROPERTY(bool allowLogout READ allowLogout READ allowLogout NOTIFY allowLogoutChanged)
 
     // locksreen shortcut icons
-    Q_PROPERTY(LockscreenButtonAction lockscreenLeftButtonAction READ lockscreenLeftButtonAction WRITE setLockscreenLeftButtonAction NOTIFY
-                   lockscreenLeftButtonActionChanged)
-    Q_PROPERTY(LockscreenButtonAction lockscreenRightButtonAction READ lockscreenRightButtonAction WRITE setLockscreenRightButtonAction NOTIFY
-                   lockscreenRightButtonActionChanged)
+    Q_PROPERTY(LockscreenButtonAction lockscreenLeftButtonAction READ lockscreenLeftButtonAction WRITE setLockscreenLeftButtonAction NOTIFY lockscreenLeftButtonActionChanged)
+    Q_PROPERTY(LockscreenButtonAction lockscreenRightButtonAction READ lockscreenRightButtonAction WRITE setLockscreenRightButtonAction NOTIFY lockscreenRightButtonActionChanged)
 
 public:
     MobileShellSettings(QObject *parent = nullptr);
@@ -140,6 +138,20 @@ public:
      */
     void setStatusBarScaleFactor(float statusBarScaleFactor);
 
+    /**
+     * Whether the battery percentage is shown in the status bar.
+     *
+     * If true, the percentage will be shown next to the battery in the status bar.
+     */
+    bool showBatteryPercentage() const;
+
+    /**
+     * Set whether the battery percentage is shown in the status bar.
+     *
+     * @param showBatteryPercentage Whether the battery percentage is shown in the status bar.
+     */
+    void setShowBatteryPercentage(bool showBatteryPercentage);
+
     /**
      * Whether the navigation panel is enabled.
      *
@@ -245,6 +257,7 @@ Q_SIGNALS:
     void animationsEnabledChanged();
     void dateInStatusBarChanged();
     void statusBarScaleFactorChanged();
+    void showBatteryPercentageChanged();
     void taskSwitcherPreviewsEnabledChanged();
     void actionDrawerTopLeftModeChanged();
     void actionDrawerTopRightModeChanged();

kcms/mobileshell/ui/main.qml

@@ -68,6 +68,20 @@ KCM.SimpleKCM {
 
             FormCard.FormDelegateSeparator { above: quickSettingsButton; below: topLeftActionDrawerModeDelegate }
 
+            FormCard.FormSwitchDelegate {
+                id: showBatteryPercentage
+                text: i18n("Battery Percentage")
+                description: i18n("Show battery percentage in the status bar.")
+                checked: ShellSettings.Settings.showBatteryPercentage
+                onCheckedChanged: {
+                    if (checked != ShellSettings.Settings.showBatteryPercentage) {
+                        ShellSettings.Settings.showBatteryPercentage = checked;
+                    }
+                }
+            }
+
+            FormCard.FormDelegateSeparator { above: quickSettingsButton; below: topLeftActionDrawerModeDelegate }
+
             FormCard.FormComboBoxDelegate {
                 id: statusBarScaleFactorDelegate
 
@@ -239,7 +253,7 @@ KCM.SimpleKCM {
                 }
                 onCurrentValueChanged: ShellSettings.Settings.lockscreenLeftButtonAction = currentValue
             }
-            
+
             FormCard.FormDelegateSeparator { above: lockscreenRightButtonDelegate; below: lockscreenLeftButtonDelegate }
 
             FormCard.FormComboBoxDelegate {