aves/lib/widgets/common/basic/insets.dart
2021-09-28 14:32:15 +09:00

64 lines
1.8 KiB
Dart

import 'dart:math';
import 'package:aves/widgets/common/extensions/media_query.dart';
import 'package:flutter/material.dart';
import 'package:provider/provider.dart';
// This widget should be added on top of Scaffolds with:
// - `resizeToAvoidBottomInset` set to false,
// - a vertically scrollable body.
// It will prevent the body from scrolling when a user swipe from bottom to use Android Q style navigation gestures.
class BottomGestureAreaProtector extends StatelessWidget {
const BottomGestureAreaProtector({Key? key}) : super(key: key);
@override
Widget build(BuildContext context) {
return Selector<MediaQueryData, double>(
selector: (context, mq) => mq.systemGestureInsets.bottom,
builder: (context, systemGestureBottom, child) {
return Positioned(
left: 0,
right: 0,
bottom: 0,
height: systemGestureBottom,
child: const AbsorbPointer(),
);
},
);
}
}
class GestureAreaProtectorStack extends StatelessWidget {
final Widget child;
const GestureAreaProtectorStack({
Key? key,
required this.child,
}) : super(key: key);
@override
Widget build(BuildContext context) {
return Stack(
children: [
child,
const BottomGestureAreaProtector(),
],
);
}
}
class BottomPaddingSliver extends StatelessWidget {
const BottomPaddingSliver({Key? key}) : super(key: key);
@override
Widget build(BuildContext context) {
return SliverToBoxAdapter(
child: Selector<MediaQueryData, double>(
selector: (context, mq) => max(mq.effectiveBottomPadding, mq.systemGestureInsets.bottom),
builder: (context, mqPaddingBottom, child) {
return SizedBox(height: mqPaddingBottom);
},
),
);
}
}