books

packages/idraw/lib/p11/p11_page.dart

@@ -1,6 +1,6 @@
 import 'package:flutter/material.dart';
 
-import 'package:idraw/components/demo_shower.dart';
+import 'package:components/components.dart';
 import 's01.dart' as s1;
 import 's02.dart' as s2;
 import 's03.dart' as s3;
@@ -12,6 +12,7 @@ class P11Page extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return const DemoShower(
+      srcCodeDir: 'draw/p11',
       demos:  [
         s1.Paper(),
         s2.Paper(),

packages/idraw/lib/p11/s02.dart

@@ -80,7 +80,7 @@ class CurveBox extends StatefulWidget {
   final Color color;
   final Curve curve;
 
-  CurveBox({Key? key, this.color = Colors.lightBlue, this.curve = Curves.linear})
+  const CurveBox({Key? key, this.color = Colors.lightBlue, this.curve = Curves.linear})
       : super(key: key);
 
   @override

packages/idraw/lib/p11/s04.dart

@@ -34,6 +34,12 @@ class _PaperState extends State<Paper> with SingleTickerProviderStateMixin {
     // _controller.repeat(reverse: true);
   }
 
+  @override
+  void dispose() {
+    _controller.dispose();
+    super.dispose();
+  }
+
   @override
   Widget build(BuildContext context) {
     return Center(