52 lines
1.2 KiB
Dart
52 lines
1.2 KiB
Dart
import 'dart:async';
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import 'dart:math';
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import 'dart:ui' as ui;
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import 'package:flutter/material.dart';
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import 'package:flutter/services.dart';
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import '../components/coordinate_pro.dart';
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/// create by 张风捷特烈 on 2020-03-19
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/// contact me by email 1981462002@qq.com
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/// 说明: 纸
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class Paper extends StatelessWidget{
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const Paper({super.key});
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@override
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Widget build(BuildContext context) {
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return CustomPaint(
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size: Size(100,100),
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painter: PicMan(), // 背景
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);
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}
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}
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class PicMan extends CustomPainter {
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@override
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void paint(Canvas canvas, Size size) {
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canvas.clipRect(Offset.zero & size); //剪切画布
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canvas.translate(size.width/2, size.height/2);
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_drawArcDetail(canvas);
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}
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void _drawArcDetail(Canvas canvas) {
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var rect = Rect.fromCenter(center: Offset(0, 0), height: 100, width: 100);
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Paint _paint = Paint();
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var a = pi / 8;
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canvas.drawArc(rect, a, 2 * pi - a.abs() * 2, true, _paint..color=Colors.yellowAccent);
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canvas.translate(40, 0);
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canvas.translate(40, 0);
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canvas.drawCircle(Offset(0, 0), 6, _paint);
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canvas.translate(25, 0);
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canvas.drawCircle(Offset(0, 0), 6, _paint);
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}
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@override
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bool shouldRepaint(covariant CustomPainter oldDelegate) => false;
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} |