Merge pull request #271 from Afroz-Shaikh/fix/assert-valuebar-value

[BUG-FIX] Assert Error when ValueBar value is less than CustomRulerLable value

example/lib/main.dart

@@ -6,7 +6,7 @@ void main() {
   runApp(
     const MaterialApp(
       debugShowCheckedModeBanner: false,
-      home: MyVerticalGauge(),
+      home: LinearGaugeExample(),
     ),
   );
 }
@@ -23,6 +23,7 @@ class LinearGaugeExample extends StatefulWidget {
 }
 
 class _LinearGaugeExampleState extends State<LinearGaugeExample> {
+  double value = 20;
   @override
   Widget build(BuildContext context) {
     return Scaffold(
@@ -33,6 +34,16 @@ class _LinearGaugeExampleState extends State<LinearGaugeExample> {
           rulers: RulerStyle(
             rulerPosition: RulerPosition.bottom,
           ),
+          valueBar: [
+            ValueBar(
+              value: 20,
+              offset: 300,
+            )
+          ],
+          customLabels: [
+            CustomRulerLabel(text: "Hello One", value: value),
+            CustomRulerLabel(text: "Hello Two", value: 60),
+          ],
           pointers: const [
             Pointer(
               value: 50,

example/pubspec.lock

@@ -81,7 +81,7 @@ packages:
       path: ".."
       relative: true
     source: path
-    version: "1.0.3"
+    version: "1.0.4"
   leak_tracker:
     dependency: transitive
     description:

lib/src/linear_gauge/linear_gauge.dart

@@ -66,6 +66,12 @@ class LinearGauge extends StatefulWidget {
     this.curves = const [],
   })  : assert(() {
           if (customLabels!.isNotEmpty) {
+            if (valueBar != []) {
+              assert(
+                  valueBar!.every(
+                      (element) => element.value >= customLabels.first.value!),
+                  "Valuebar value should be greater than or equal to customLabels start value");
+            }
             assert(customLabels.length >= 2,
                 "At least two CustomRulerLabel should be added");