circular_modal.dart
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import 'dart:math';
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:flutter/widgets.dart';
import 'package:modal_bottom_sheet/modal_bottom_sheet.dart';
class AvatarBottomSheet extends StatelessWidget {
final Widget child;
final Animation<double> animation;
const AvatarBottomSheet({Key key, this.child, this.animation})
: super(key: key);
@override
Widget build(BuildContext context) {
return AnnotatedRegion<SystemUiOverlayStyle>(
value: SystemUiOverlayStyle.light,
child: Column(
mainAxisSize: MainAxisSize.min,
crossAxisAlignment: CrossAxisAlignment.start,
children: [
SizedBox(height: 12),
SafeArea(
bottom: false,
child: AnimatedBuilder(
animation: animation,
builder: (context, child) => Transform.translate(
offset: Offset(0, (1 - animation.value) * 100),
child: Opacity(
child: child, opacity: max(0, animation.value * 2 - 1))),
child: Row(
children: <Widget>[
SizedBox(width: 20),
CircleAvatar(
child: Text('JB'),
radius: 32,
),
],
),
)),
SizedBox(height: 12),
Flexible(
flex: 1,
fit: FlexFit.loose,
child: ClipRRect(
borderRadius: BorderRadius.only(
topLeft: Radius.circular(15),
topRight: Radius.circular(15)),
child: Container(
decoration: BoxDecoration(
color: Theme.of(context).scaffoldBackgroundColor,
boxShadow: [
BoxShadow(
blurRadius: 10,
color: Colors.black12,
spreadRadius: 5)
]),
width: double.infinity,
child: MediaQuery.removePadding(
context: context, removeTop: true, child: child)),
),
),
]),
);
}
}
Future<T> showAvatarModalBottomSheet<T>({
@required BuildContext context,
@required ScrollWidgetBuilder builder,
Color backgroundColor,
double elevation,
ShapeBorder shape,
Clip clipBehavior,
Color barrierColor = Colors.black87,
bool bounce = true,
bool expand = false,
AnimationController secondAnimation,
bool useRootNavigator = false,
bool isDismissible = true,
bool enableDrag = true,
}) async {
assert(context != null);
assert(builder != null);
assert(expand != null);
assert(useRootNavigator != null);
assert(isDismissible != null);
assert(enableDrag != null);
assert(debugCheckHasMediaQuery(context));
assert(debugCheckHasMaterialLocalizations(context));
final result = await Navigator.of(context, rootNavigator: useRootNavigator)
.push(ModalBottomSheetRoute<T>(
builder: builder,
containerBuilder: (_, animation, child) => AvatarBottomSheet(
child: child,
animation: animation,
),
bounce: bounce,
secondAnimationController: secondAnimation,
expanded: expand,
barrierLabel: MaterialLocalizations.of(context).modalBarrierDismissLabel,
isDismissible: isDismissible,
modalBarrierColor: barrierColor,
enableDrag: enableDrag,
));
return result;
}