62 lines
1.9 KiB
Dart
62 lines
1.9 KiB
Dart
import 'package:aves/widgets/common/extensions/media_query.dart';
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import 'package:flutter/material.dart';
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import 'package:provider/provider.dart';
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// This widget should be added on top of Scaffolds with:
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// - `resizeToAvoidBottomInset` set to false,
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// - a vertically scrollable body.
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// It will prevent the body from scrolling when a user swipe from bottom to use Android Q style navigation gestures.
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class BottomGestureAreaProtector extends StatelessWidget {
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// as of Flutter v1.22.5, `systemGestureInsets` from `MediaQuery` mistakenly reports no bottom inset,
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// so we use an empirical measurement instead
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static const double systemGestureInsetsBottom = 32;
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@override
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Widget build(BuildContext context) {
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return Selector<MediaQueryData, double>(
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selector: (c, mq) => mq.effectiveBottomPadding,
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builder: (c, mqPaddingBottom, child) {
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// devices with physical navigation buttons have no bottom insets
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// we assume these devices do not use gesture navigation
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if (mqPaddingBottom == 0) return SizedBox();
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return Positioned(
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left: 0,
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right: 0,
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bottom: 0,
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height: systemGestureInsetsBottom,
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child: AbsorbPointer(),
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);
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},
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);
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}
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}
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class GestureAreaProtectorStack extends StatelessWidget {
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final Widget child;
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const GestureAreaProtectorStack({@required this.child});
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@override
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Widget build(BuildContext context) {
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return Stack(
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children: [
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child,
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BottomGestureAreaProtector(),
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],
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);
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}
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}
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class BottomPaddingSliver extends StatelessWidget {
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@override
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Widget build(BuildContext context) {
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return SliverToBoxAdapter(
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child: Selector<MediaQueryData, double>(
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selector: (context, mq) => mq.effectiveBottomPadding,
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builder: (context, mqPaddingBottom, child) {
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return SizedBox(height: mqPaddingBottom);
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},
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),
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);
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}
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}
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