Last active
September 9, 2024 16:25
-
-
Save yeasin50/275c99ba9b18575e831f74ef341c3969 to your computer and use it in GitHub Desktop.
pointyToolTip shapeBox: shapeBorder
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
| import 'package:flutter/material.dart'; | |
| ///! Question >> https://stackoverflow.com/q/78861360/10157127 | |
| /// Create a pointy shape like toolTip | |
| /// | |
| /// ```dart | |
| /// Container( | |
| /// decoration: ShapeDecoration( | |
| /// shape: PointyShape( | |
| /// padding: const EdgeInsets.all(12), | |
| /// pointOffsetX: pointX, | |
| /// pointyHeight: 24, | |
| /// radiusValue: 16, | |
| /// isTop : true, | |
| /// ), | |
| /// color: Colors.white, | |
| /// ), | |
| ///``` | |
| /// | |
| class PointyShape extends OutlinedBorder { | |
| const PointyShape({ | |
| this.pointOffsetX = .85, | |
| this.radiusValue = 16, | |
| this.pointyHeight = 24, | |
| this.padding = const EdgeInsets.all(12), | |
| this.isTop = true, | |
| }) : assert(pointOffsetX >= 0 && pointOffsetX <= 1, "offset should be within 0,1"); | |
| final double pointOffsetX; | |
| final double radiusValue; | |
| final double pointyHeight; | |
| final EdgeInsets padding; | |
| final bool isTop; | |
| @override | |
| OutlinedBorder copyWith({BorderSide? side}) => this; | |
| @override | |
| EdgeInsetsGeometry get dimensions => padding.copyWith( | |
| bottom: padding.bottom + (isTop ? 0 : pointyHeight), | |
| top: padding.top + (isTop ? pointyHeight : 0), | |
| ); | |
| @override | |
| Path getInnerPath(Rect rect, {TextDirection? textDirection}) { | |
| return getOuterPath(rect, textDirection: textDirection); | |
| } | |
| @override | |
| Path getOuterPath(Rect rect, {TextDirection? textDirection}) { | |
| final rRect = RRect.fromRectAndRadius( | |
| Rect.fromLTRB( | |
| rect.left, | |
| rect.top + (isTop ? pointyHeight : 0), | |
| rect.right, | |
| rect.bottom - (isTop ? 0 : pointyHeight), | |
| ), | |
| Radius.circular(radiusValue), | |
| ); | |
| final pointyStartX = rect.right - (rect.width * (1 - pointOffsetX)) - pointyHeight / 2; | |
| final toolTip = isTop | |
| ? (Path() | |
| ..moveTo(pointyStartX + pointyHeight / 2, rect.top) | |
| ..lineTo(pointyStartX, rect.top + pointyHeight) | |
| ..lineTo(pointyStartX + (pointyHeight), rect.top + pointyHeight) | |
| ..lineTo(pointyStartX + pointyHeight / 2, rect.top)) | |
| : Path() | |
| ..moveTo( | |
| pointyStartX, | |
| rect.bottom - pointyHeight, | |
| ) | |
| ..lineTo(pointyStartX + (pointyHeight / 2), rect.bottom) | |
| ..lineTo(pointyStartX + (pointyHeight), rect.bottom - pointyHeight) | |
| ..lineTo(pointyStartX, rect.bottom - pointyHeight); | |
| return Path.combine(PathOperation.union, Path()..addRRect(rRect), toolTip); | |
| } | |
| @override | |
| void paint(Canvas canvas, Rect rect, {TextDirection? textDirection}) {} | |
| @override | |
| ShapeBorder scale(double t) => this; | |
| } | |
| void main() => runApp(const MaterialApp(home: MyApp())); | |
| class MyApp extends StatefulWidget { | |
| const MyApp({super.key}); | |
| @override | |
| State<MyApp> createState() => _MyAppState(); | |
| } | |
| class _MyAppState extends State<MyApp> { | |
| double pointX = .85; | |
| bool isTop = false; | |
| @override | |
| Widget build(BuildContext context) { | |
| return Scaffold( | |
| backgroundColor: Colors.deepPurple, | |
| body: Padding( | |
| padding: const EdgeInsets.all(8.0), | |
| child: Center( | |
| child: Column( | |
| mainAxisSize: MainAxisSize.min, | |
| children: [ | |
| Container( | |
| decoration: ShapeDecoration( | |
| shape: PointyShape( | |
| padding: const EdgeInsets.all(12), | |
| pointOffsetX: pointX, | |
| isTop: isTop, | |
| pointyHeight: 24, | |
| radiusValue: 16, | |
| ), | |
| color: Colors.white, | |
| ), | |
| child: Column( | |
| mainAxisSize: MainAxisSize.min, | |
| children: [ | |
| const Text( | |
| "header", | |
| style: TextStyle(fontSize: 34), | |
| ), | |
| Text( | |
| "body s " * 22, | |
| ), | |
| ], | |
| ), | |
| ), | |
| const SizedBox(height: 32), | |
| SwitchListTile( | |
| value: isTop, | |
| onChanged: (value) { | |
| setState(() { | |
| isTop = value; | |
| }); | |
| }, | |
| ), | |
| Slider( | |
| min: .1, | |
| max: .9, //consider padding+radius | |
| value: pointX, | |
| onChanged: (v) { | |
| setState(() { | |
| pointX = v; | |
| }); | |
| }, | |
| ) | |
| ], | |
| ), | |
| ), | |
| ), | |
| ); | |
| } | |
| } |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment