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| 5f846f478592c21f0cf999f1253bb25f |
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| import 'package:flutter/material.dart'; | ||
| import 'package:mongol/mongol.dart'; | ||
|
|
||
| /// This demo shows that MongolText can be resized with pinch to zoom. | ||
| class GestureDetectorDemo extends StatelessWidget { | ||
| @override | ||
| Widget build(BuildContext context) { | ||
| return Scaffold( | ||
| body: Center( | ||
| child: Container( | ||
| color: Colors.blue[100], | ||
| child: SafeArea(child: GestureText()), | ||
| ), | ||
| ), | ||
| ); | ||
| } | ||
| } | ||
|
|
||
| class GestureText extends StatefulWidget { | ||
| const GestureText({ | ||
| Key key, | ||
| this.child, | ||
| }) : super(key: key); | ||
|
|
||
| final Widget child; | ||
|
|
||
| @override | ||
| _GestureTextState createState() => _GestureTextState(); | ||
| } | ||
|
|
||
| class _GestureTextState extends State<GestureText> { | ||
| double _fontSize = 100; | ||
| final double _baseFontSize = 20; | ||
| double _fontScale = 1; | ||
| double _baseFontScale = 1; | ||
|
|
||
| @override | ||
| Widget build(BuildContext context) { | ||
| return GestureDetector( | ||
| onScaleStart: (ScaleStartDetails scaleStartDetails) { | ||
| _baseFontScale = _fontScale; | ||
| }, | ||
| onScaleUpdate: (ScaleUpdateDetails scaleUpdateDetails) { | ||
| setState(() { | ||
| _fontScale = | ||
| (_baseFontScale * scaleUpdateDetails.scale).clamp(0.5, 10.0); | ||
| _fontSize = _fontScale * _baseFontSize; | ||
| }); | ||
| }, | ||
| child: MongolText( | ||
| 'ᠮᠣᠩᠭᠣᠯ\nᠪᠢᠴᠢᠭ', | ||
| style: TextStyle(fontSize: _fontSize), | ||
| ), | ||
| ); | ||
| } | ||
| } |
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