feat: camper van energy monitoring widget for Plasma 6main

Pure QML KPackage widget with Rust background service for real-time
Victron energy system monitoring via MQTT and D-Bus.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

1 files changed, 31 insertions, 0 deletions

diff --git a/package/contents/ui/FormatUtils.qml b/package/contents/ui/FormatUtils.qml
new file mode 100644
index 0000000..9fe400a
--- /dev/null
+++ b/package/contents/ui/FormatUtils.qml
@@ -0,0 +1,31 @@
+import QtQuick 6.0
+
+QtObject {
+    function formatSoc(soc) {
+        if (soc === undefined || soc === null || isNaN(soc) || soc < 0) {
+            return "--"
+        }
+        return Math.round(soc) + "%"
+    }
+
+    function formatPower(connected, power) {
+        if (!connected) {
+            return "--"
+        }
+        return Math.round(power) + "W"
+    }
+
+    function formatSolar(solarPower) {
+        if (solarPower === undefined || solarPower === null || isNaN(solarPower) || solarPower < 0) {
+            return "--"
+        }
+        return Math.round(solarPower) + "W"
+    }
+
+    function formatAcPower(power) {
+        if (power === undefined || power === null || isNaN(power) || power < 0) {
+            return "--"
+        }
+        return Math.round(power) + "W"
+    }
+}