flutter_drawing_board 0.2.2 flutter_drawing_board: ^0.2.2 copied to clipboard
A Flutter package of drawing board, provides basic drawing tools, canvas operations, and image data acquisition.
import 'dart:io';
import 'dart:typed_data';
import 'package:flutter/foundation.dart';
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:flutter_drawing_board/flutter_drawing_board.dart';
void main() {
FlutterError.onError = (FlutterErrorDetails details) {
FlutterError.dumpErrorToConsole(details);
if (kReleaseMode) {
exit(1);
}
};
runApp(MyApp());
}
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Drawing Test',
theme: ThemeData(primarySwatch: Colors.blue),
home: const MyHomePage(),
);
}
}
class MyHomePage extends StatefulWidget {
const MyHomePage({Key? key}) : super(key: key);
@override
_MyHomePageState createState() => _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> {
///绘制控制器
final DrawingController _drawingController = DrawingController(
///配置
config: DrawConfig(
paintType: PaintType.simpleLine,
color: Colors.red,
thickness: 2.0,
angle: 0,
text: '输入文本',
),
);
@override
void dispose() {
_drawingController.dispose();
super.dispose();
}
///获取画板数据 `getImageData()`
Future<void> _getImageData() async {
final Uint8List? data =
(await _drawingController.getImageData())?.buffer.asUint8List();
if (data == null) {
print('获取图片数据失败');
return;
}
showDialog<void>(
context: context,
builder: (BuildContext c) {
return Material(
color: Colors.transparent,
child:
InkWell(onTap: () => Navigator.pop(c), child: Image.memory(data)),
);
},
);
}
@override
Widget build(BuildContext context) {
return Scaffold(
resizeToAvoidBottomInset: false,
backgroundColor: Colors.grey,
appBar: AppBar(
title: const Text('Drawing Test'),
systemOverlayStyle: SystemUiOverlayStyle.light,
actions: <Widget>[
IconButton(icon: const Icon(Icons.check), onPressed: _getImageData)
],
),
body: Column(
children: <Widget>[
Expanded(
child: DrawingBoard(
controller: _drawingController,
background:
Container(width: 400, height: 400, color: Colors.white),
showDefaultActions: true,
showDefaultTools: true,
),
),
const Padding(
padding: EdgeInsets.all(8.0),
child: SelectableText(
'https://github.com/xSILENCEx/flutter_drawing_board',
style: TextStyle(fontSize: 10, color: Colors.white),
),
),
],
),
);
}
}