74 lines
2.0 KiB
Dart
74 lines
2.0 KiB
Dart
import 'dart:math';
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import 'dart:typed_data';
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import 'dart:ui' as ui;
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import 'package:flutter/cupertino.dart';
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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.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 Container(
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color: Colors.white,
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child: CustomPaint(
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// 使用CustomPaint
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painter: PaperPainter(),
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),
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);
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}
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}
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class PaperPainter extends CustomPainter {
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final Coordinate coordinate = Coordinate();
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final double strokeWidth = 0.5;
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final Color color = Colors.blue;
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@override
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void paint(Canvas canvas, Size size) {
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// coordinate.paint(canvas, size);
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canvas.translate(size.width / 2, size.height / 2);
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Paint paint = Paint()
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..style = PaintingStyle.fill
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..color = Colors.white
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..isAntiAlias = true;
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double relativeX = 100;
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double angle = 0;
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double width = 10;
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double height = 10;
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double center = relativeX + width / 2;
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if(angle == 0) {
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center = relativeX + width/4;
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} else if (angle == 2) {
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center = relativeX + width/4*3;
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}
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Path trianglePath = Path()
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..addPolygon([Offset(relativeX, height), Offset(relativeX + width, height), Offset(center, 0),], false)..close();
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Path rectanglePath = Path()
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..addRRect(RRect.fromLTRBR(0, 10, 160, 100, Radius.circular(8)))..close();
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canvas.drawShadow(Path.combine(PathOperation.xor, trianglePath, rectanglePath), Colors.black, 3, false);
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canvas.drawPath(Path.combine(PathOperation.xor, trianglePath, rectanglePath), paint..color = Colors.white);
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paint.maskFilter = MaskFilter.blur(BlurStyle.inner, 20);
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canvas.drawPath(Path.combine(PathOperation.xor, trianglePath, rectanglePath), paint..color=Color(0xffBEC4C0));
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}
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@override
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bool shouldRepaint(CustomPainter oldDelegate) => false;
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}
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