Flutter 登录页-06

源码下载

知识点

ClipPath的使用

定义路径

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class ClipPath1 extends CustomClipper<Path> {
// 获取剪裁区域
@override
Path getClip(Size size) {
final path = Path()
..lineTo(0, size.height)
..lineTo(size.width, size.height)
..lineTo(size.width, size.height - 224)
..lineTo(0, size.height - 300)
..close();

return path;
}

// 是否重新剪裁。如果剪裁区域始终不会发生变化时应该返回false,这样就不会触发重新剪裁
@override
bool shouldReclip(covariant CustomClipper<Path> oldClipper) {
return false;
}
}

ClipPath组件的使用

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ClipPath(
clipper: ClipPath1(),
child: Container(
// path填充的颜色
color: Colors.white,
),
),

代码实现

main.dart
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import 'package:flutter/material.dart';
import 'package:login_06/homepage.dart';

void main() => runApp(const MyApp());

class MyApp extends StatelessWidget {
const MyApp({Key? key}) : super(key: key);

@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'My App',
theme: ThemeData(
primarySwatch: Colors.blue,
),
debugShowCheckedModeBanner: false,
home: const HomePage(),
);
}
}
homepage.dart
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import 'package:flutter/material.dart';

class HomePage extends StatefulWidget {
const HomePage({Key? key}) : super(key: key);

@override
State<HomePage> createState() => _HomePageState();
}

class _HomePageState extends State<HomePage> {
@override
Widget build(BuildContext context) {
return Container(
decoration: BoxDecoration(
image: DecorationImage(
image: const AssetImage("assets/background.png"),
fit: BoxFit.cover,
colorFilter: ColorFilter.mode(const Color(0xff481f4d).withOpacity(0.1), BlendMode.color),
),
),
child: Scaffold(
backgroundColor: Colors.transparent,
body: Stack(
children: [
Positioned(
child: ClipPath(
clipper: ClipPath1(),
child: Container(
// path填充的颜色
color: const Color(0xffc94b1a),
),
),
),
Positioned(
child: ClipPath(
clipper: ClipPath2(),
child: Container(
// path填充的颜色
color: const Color(0xffa13c15),
),
),
),
Positioned(
child: Padding(
padding: const EdgeInsets.symmetric(horizontal: 32),
child: Column(
children: [
const SizedBox(height: 75),
Row(
mainAxisAlignment: MainAxisAlignment.start,
children: [
Container(
width: 55,
height: 61,
decoration: const BoxDecoration(
image: DecorationImage(
image: AssetImage("assets/f.png"),
fit: BoxFit.fill,
),
boxShadow: [
BoxShadow(
color: Color(0xff4b1f4d),
offset: Offset(14, -14),
),
],
),
),
const SizedBox(width: 31),
Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: const [
Text(
"Hello!",
style: TextStyle(
fontFamily: "SFUIText",
fontSize: 40,
fontWeight: FontWeight.bold,
color: Colors.white,
),
),
Text(
"Fashion gallery for you.",
style: TextStyle(
fontFamily: "SFUIText",
fontSize: 15,
fontWeight: FontWeight.bold,
color: Colors.white,
),
),
],
)
],
),
const SizedBox(height: 360),
SizedBox(
width: double.infinity,
height: 56,
child: MaterialButton(
onPressed: () {},
child: const Text(
"Log in",
style: TextStyle(
fontFamily: "SFUIText",
fontSize: 16,
fontWeight: FontWeight.w500,
color: Colors.white,
),
),
elevation: 0,
color: const Color(0xffc94b1a),
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(30),
),
),
),
const SizedBox(height: 16),
SizedBox(
width: double.infinity,
height: 56,
child: MaterialButton(
onPressed: () {},
child: Row(
mainAxisAlignment: MainAxisAlignment.center,
children: [
Image.asset("assets/Path.png"),
const SizedBox(width: 16),
const Text(
"Connect with Facebook",
style: TextStyle(
fontFamily: "SFUIText",
fontSize: 16,
fontWeight: FontWeight.w500,
color: Colors.white,
),
),
],
),
elevation: 0,
color: const Color(0xff2672cb),
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(30),
),
),
),
const SizedBox(height: 17),
const Text(
"Don't have account? Sign up!",
style: TextStyle(
fontFamily: "SFUIText",
fontSize: 14,
fontWeight: FontWeight.w500,
color: Colors.white,
),
),
],
),
),
),
],
),
),
);
}
}

class ClipPath1 extends CustomClipper<Path> {
// 获取剪裁区域
@override
Path getClip(Size size) {
final path = Path()
..lineTo(0, size.height)
..lineTo(size.width, size.height)
..lineTo(size.width, size.height - 224)
..lineTo(0, size.height - 300)
..close();

return path;
}

// 是否重新剪裁。如果剪裁区域始终不会发生变化时应该返回false,这样就不会触发重新剪裁
@override
bool shouldReclip(covariant CustomClipper<Path> oldClipper) {
return true;
}
}

class ClipPath2 extends CustomClipper<Path> {
// 获取剪裁区域
@override
Path getClip(Size size) {
final path = Path()
..lineTo(0, size.height)
..lineTo(size.width, size.height)
..lineTo(size.width, size.height - 190)
..lineTo(0, size.height - 300)
..close();

return path;
}

// 是否重新剪裁。如果剪裁区域始终不会发生变化时应该返回false,这样就不会触发重新剪裁
@override
bool shouldReclip(covariant CustomClipper<Path> oldClipper) {
return true;
}
}