border beam

lib/fx_7_border_beam/border_beam.dart

@@ -1,19 +1,9 @@
 import 'package:flutter/material.dart';
-import 'dart:math' as math;
 import 'dart:ui' as ui;
 
 class BorderBeam extends StatefulWidget {
-  final Widget child;
-  final double duration;
-  final double borderWidth;
-  final Color colorFrom;
-  final Color colorTo;
-  final Color staticBorderColor;
-  final BorderRadius borderRadius;
-  final EdgeInsetsGeometry padding;
-
   const BorderBeam({
-    Key? key,
+    super.key,
     required this.child,
     this.duration = 15,
     this.borderWidth = 1.5,
@@ -22,16 +12,31 @@ class BorderBeam extends StatefulWidget {
     this.staticBorderColor = const Color(0xFFCCCCCC),
     this.borderRadius = const BorderRadius.all(Radius.circular(12)),
     this.padding = EdgeInsets.zero,
-  }) : super(key: key);
+  });
+
+  final BorderRadius borderRadius;
+  final double borderWidth;
+  final Widget child;
+  final Color colorFrom;
+  final Color colorTo;
+  final double duration;
+  final EdgeInsetsGeometry padding;
+  final Color staticBorderColor;
 
   @override
   _BorderBeamState createState() => _BorderBeamState();
 }
 
 class _BorderBeamState extends State<BorderBeam>
     with SingleTickerProviderStateMixin {
-  late AnimationController _controller;
   late Animation<double> _animation;
+  late AnimationController _controller;
+
+  @override
+  void dispose() {
+    _controller.dispose();
+    super.dispose();
+  }
 
   @override
   void initState() {
@@ -44,44 +49,34 @@ class _BorderBeamState extends State<BorderBeam>
     _controller.repeat();
   }
 
-  @override
-  void dispose() {
-    _controller.dispose();
-    super.dispose();
-  }
-
   @override
   Widget build(BuildContext context) {
-    return AnimatedBuilder(
-      animation: _animation,
-      builder: (context, child) {
-        return CustomPaint(
-          painter: BorderBeamPainter(
-            progress: _animation.value,
-            borderWidth: widget.borderWidth,
-            colorFrom: widget.colorFrom,
-            colorTo: widget.colorTo,
-            staticBorderColor: widget.staticBorderColor,
-            borderRadius: widget.borderRadius,
-          ),
-          child: Padding(
-            padding: widget.padding,
-            child: widget.child,
-          ),
-        );
-      },
+    return Padding(
+      padding: EdgeInsets.all(widget.borderWidth / 2),
+      child: AnimatedBuilder(
+        animation: _animation,
+        builder: (context, child) {
+          return CustomPaint(
+            painter: BorderBeamPainter(
+              progress: _animation.value,
+              borderWidth: widget.borderWidth,
+              colorFrom: widget.colorFrom,
+              colorTo: widget.colorTo,
+              staticBorderColor: widget.staticBorderColor,
+              borderRadius: widget.borderRadius,
+            ),
+            child: Padding(
+              padding: widget.padding,
+              child: widget.child,
+            ),
+          );
+        },
+      ),
     );
   }
 }
 
 class BorderBeamPainter extends CustomPainter {
-  final double progress;
-  final double borderWidth;
-  final Color colorFrom;
-  final Color colorTo;
-  final Color staticBorderColor;
-  final BorderRadius borderRadius;
-
   BorderBeamPainter({
     required this.progress,
     required this.borderWidth,
@@ -91,6 +86,13 @@ class BorderBeamPainter extends CustomPainter {
     required this.borderRadius,
   });
 
+  final BorderRadius borderRadius;
+  final double borderWidth;
+  final Color colorFrom;
+  final Color colorTo;
+  final double progress;
+  final Color staticBorderColor;
+
   @override
   void paint(Canvas canvas, Size size) {
     final rect = Rect.fromLTWH(0, 0, size.width, size.height);