fix max length ruler for panels

containment/package/contents/ui/Ruler.qml

@@ -33,8 +33,8 @@ import "../code/ColorizerTools.js" as ColorizerTools
 Item{
     id: rulerItem
 
-    width: root.isHorizontal ? root.maxLength : thickness
+    width: root.isHorizontal ? userMaxLength : thickness
-    height: root.isVertical ? root.maxLength : thickness
+    height: root.isVertical ? userMaxLength : thickness
 
     opacity: root.editMode ? 1 : 0
 
@@ -45,6 +45,14 @@ Item{
 
     readonly property string tooltip: i18nc("maximum length tooltip, %0% is maximum length percentage","You can use mouse wheel to change maximum length of %0%").arg(plasmoid.configuration.maxLength)
 
+    readonly property int userMaxLength: {
+        if (root.isHorizontal) {
+            return root.width * (plasmoid.configuration.maxLength/100);
+        } else {
+            return root.height * (plasmoid.configuration.maxLength/100);
+        }
+    }
+
     x: {
         if (root.isHorizontal) {
             return xL;
@@ -70,7 +78,7 @@ Item{
 
     }
 
-    property int length: root.maxLength
+    property int length: userMaxLength
 
     property int rMargin: 3
     property int xL: 0