In signature pad avoid drawing out of bounds and form scroll

Author: danvick

lib/src/form_builder.dart

@@ -861,11 +861,14 @@ class FormBuilderState extends State<FormBuilder> {
                       return formControl.validator(value);
                   },
                   builder: (FormFieldState<dynamic> field) {
-                    return SignaturePad(onChanged: (image){
-                      field.didChange(image);
-                    },);
+                    return SignaturePad(
+                      onChanged: (image) {
+                        field.didChange(image);
+                      },
+                    );
                   },
                 );
+
                 break;
             }
           }).toList(),

lib/src/signature_pad.dart

@@ -57,14 +57,15 @@ class _SignaturePadState extends State<SignaturePad> {
   @override
   Widget build(BuildContext context) {
     return Container(
-      height: 200,
+       height: 250,
       child: Column(
         children: <Widget>[
           Container(
             decoration: BoxDecoration(
               color: Colors.white,
               border: Border.all(color: Colors.grey),
             ),
+            height: 200,
             child: GestureDetector(
               onPanUpdate: (DragUpdateDetails details) {
                 setState(() {
@@ -82,9 +83,13 @@ class _SignaturePadState extends State<SignaturePad> {
                   getImage();
                 });
               },
-              child: CustomPaint(
-                painter: SignaturePainter(paint, points: _points),
-                size: Size.fromHeight(150),
+              onVerticalDragUpdate: (_) {},
+              child: ClipRect(
+               //  borderRadius: BorderRadius.all(0),
+                child: CustomPaint(
+                  painter: SignaturePainter(paint, points: _points),
+                  size: Size.fromHeight(150),
+                ),
               ),
               // color: Colors.white,
             ),