-
Notifications
You must be signed in to change notification settings - Fork 4
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
- Loading branch information
1 parent
6977863
commit 67e4cce
Showing
3 changed files
with
97 additions
and
78 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,76 @@ | ||
| import 'package:flutter/cupertino.dart'; | ||
|
|
||
| class DismissiblePage extends StatefulWidget { | ||
| final Widget Function(double progress) child; | ||
| final double threshold; | ||
| final Color backgroundColor; | ||
| final bool enable; | ||
| final void Function(double progress)? onProgress; | ||
| final void Function()? onDismiss; | ||
| final double scaleDownPercentage; | ||
|
|
||
| const DismissiblePage({ | ||
| Key? key, | ||
| required this.child, | ||
| this.threshold = 100, | ||
| this.onProgress, | ||
| this.enable = true, | ||
| this.onDismiss, | ||
| this.scaleDownPercentage = 0.25, | ||
| this.backgroundColor = const Color(0xff000000), | ||
| }) : super(key: key); | ||
|
|
||
| @override | ||
| State<DismissiblePage> createState() => _DismissiblePageState(); | ||
| } | ||
|
|
||
| class _DismissiblePageState extends State<DismissiblePage> { | ||
| double _startY = 0.0; | ||
| double displacement = 0.0; | ||
| double percentage = 0.0; | ||
|
|
||
| @override | ||
| Widget build(BuildContext context) { | ||
| return GestureDetector( | ||
| behavior: HitTestBehavior.opaque, | ||
| onVerticalDragStart: (DragStartDetails details) { | ||
| _startY = details.globalPosition.dy; | ||
| }, | ||
| onVerticalDragUpdate: (DragUpdateDetails details) { | ||
| if ((details.globalPosition.dy - _startY) > 0 && widget.enable) { | ||
| setState(() { | ||
| displacement = details.globalPosition.dy - _startY; | ||
| percentage = (displacement / widget.threshold).clamp(0, 1); | ||
| }); | ||
| widget.onProgress?.call(percentage); | ||
| } | ||
| }, | ||
| onVerticalDragEnd: (DragEndDetails details) { | ||
| if (displacement > widget.threshold) { | ||
| widget.onDismiss?.call(); | ||
| } else { | ||
| setState(() { | ||
| displacement = 0.0; | ||
| percentage = 0.0; | ||
| }); | ||
| } | ||
| }, | ||
| child: Stack( | ||
| children: [ | ||
| Container( | ||
| color: widget.backgroundColor.withOpacity(1 - percentage), | ||
| height: double.infinity, | ||
| width: double.infinity, | ||
| ), | ||
| Transform.translate( | ||
| offset: Offset(0, displacement), | ||
| child: Transform.scale( | ||
| scale: 1 - (percentage * widget.scaleDownPercentage), | ||
| child: widget.child(percentage), | ||
| ), | ||
| ), | ||
| ], | ||
| ), | ||
| ); | ||
| } | ||
| } |