112 lines
2.4 KiB
Dart
112 lines
2.4 KiB
Dart
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import 'package:flutter/material.dart';
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import 'dart:ui' as ui;
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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 Container(
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color: Colors.white,
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child: 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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Coordinate coordinate = Coordinate();
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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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drawShaderRadial(canvas);
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}
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void drawShaderRadial(Canvas canvas) {
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var colors = [
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Color(0xFFF60C0C),
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Color(0xFFF3B913),
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Color(0xFFE7F716),
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Color(0xFF3DF30B),
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Color(0xFF0DF6EF),
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Color(0xFF0829FB),
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Color(0xFFB709F4),
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];
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var pos = [1.0 / 7, 2.0 / 7, 3.0 / 7, 4.0 / 7, 5.0 / 7, 6.0 / 7, 1.0];
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Paint paint = Paint();
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paint
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..style = PaintingStyle.fill
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..color = Colors.blue;
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paint.shader = ui.Gradient.radial(
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Offset(0, 0), 25, colors, pos, TileMode.clamp);
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canvas.drawCircle(
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Offset(0, 0),
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50,
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paint,
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);
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canvas.translate(160, 0);
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paint.shader = ui.Gradient.radial(
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Offset(0, 0), 25, colors, pos, TileMode.repeated);
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canvas.drawCircle(
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Offset(0, 0),
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50,
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paint,
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);
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canvas.translate(-160*2.0, 0);
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paint.shader = ui.Gradient.radial(
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Offset(0, 0), 25, colors, pos, TileMode.mirror);
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canvas.drawCircle(
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Offset(0, 0),
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50,
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paint,
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);
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canvas.translate(0, 120);
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paint.shader = ui.Gradient.radial(Offset(0, 0), 25, colors,
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pos, TileMode.mirror, null, Offset(10, 10), 1);
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canvas.drawCircle(
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Offset.zero,
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50,
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paint,
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);
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canvas.translate(160, 0);
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paint.shader = ui.Gradient.radial(Offset(0, 0), 25, colors,
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pos, TileMode.mirror, null, Offset(-10, -10), 3);
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canvas.drawCircle(
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Offset.zero,
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50,
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paint,
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);
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canvas.translate(160, 0);
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paint.shader = ui.Gradient.radial(Offset(0, 0), 25, colors,
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pos, TileMode.mirror, null, Offset(-10, -10), 0);
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canvas.drawCircle(
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Offset.zero,
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50,
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paint,
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);
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}
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@override
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bool shouldRepaint(CustomPainter oldDelegate) => true;
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}
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