Flutter形状转换插件shape_to_go的使用
Flutter形状转换插件shape_to_go的使用
通过 shape_to_go 插件，现在可以轻松创建基本形状。
示例
ClipPath(
clipper: Potter(points: [
const TopLeftEdge(),
const PointOnShap(xDivider: 2, yDivider: 3),
const TopRightEdge(),
const PointOnShap(xDivider: 3 / 2, yDivider: 2),
const BottomRightEdge(),
const PointOnShap(xDivider: 2, yDivider: 3 / 2),
const BottomLeftEdge(),
const PointOnShap(xDivider: 3, yDivider: 2),
]),
child: Container(
color: Colors.green,
width: 342,
height: 357,
),
),
完整示例
以下是使用 shape_to_go 创建多种形状的完整示例代码：
import 'package:flutter/material.dart';
import 'package:shape_to_go/shape_to_go.dart';
void main() {
runApp(const MyApp());
}
class MyApp extends StatelessWidget {
const MyApp({super.key});
[@override](/user/override)
Widget build(BuildContext context) {
return MaterialApp(
title: 'Example',
theme: ThemeData.dark(),
home: const Example()
);
}
}
class Example extends StatelessWidget {
const Example({super.key});
[@override](/user/override)
Widget build(BuildContext context) {
return Scaffold(
body: SingleChildScrollView(
child: Column(
children: [
const SizedBox(height: 40,),
SizedBox(
width: double.maxFinite,
height: 357,
child: Stack(
children: [
Positioned(
left: (MediaQuery.of(context).size.width - 342) / 2,
child: ClipPath(
clipper: Potter(points: [
const TopLeftCorner(),
const TopRightCorner(),
const PointOnRightSide(divider: 1.5),
const BottomCenterCorner(),
const PointOnLeftSide(divider: 1.5),
],
radius: const Radius.circular(10)
),
child: Container(
color: Colors.purple,
width: 342,
height: 200,
),
),
),
Positioned(
left: (MediaQuery.of(context).size.width - 342) / 2,
bottom: 0,
child: ClipPath(
clipper: Potter(points: [
const TopLeftCorner(radius: Radius.circular(30)),
const PointOnRightSide(divider: 2.5),
const BottomRightCorner(),
const BottomLeftCorner(),
],
radius: const Radius.circular(10)
),
child: Container(
color: Colors.cyan,
width: 163,
height: 200,
),
),
),
Positioned(
right: (MediaQuery.of(context).size.width - 342) / 2,
bottom: 0,
child: ClipPath(
clipper: Potter(points: [
const PointOnLeftSide(divider: 2.5),
const TopRightCorner(radius: Radius.circular(30)),
const BottomRightCorner(),
const BottomLeftCorner(),
],
radius: const Radius.circular(10)
),
child: Container(
color: Colors.deepPurple,
width: 163,
height: 200,
),
),
),
],
),
),
const SizedBox(height: 20,),
ClipPath(
clipper: Potter(points: [
const TopCenterCorner(),
const PointOnShap(xDivider: (8 / 5), yDivider: (8 / 3)),
const CenterRightCorner(),
const PointOnShap(xDivider: (8 / 5), yDivider: (8 / 5)),
const BottomCenterCorner(),
const PointOnShap(xDivider: (8 / 3), yDivider: (8 / 5)),
const CenterLeftCorner(),
const PointOnShap(xDivider: (8 / 3), yDivider: (8 / 3)),
]
),
child: Container(
color: Colors.blue,
width: 342,
height: 357,
),
),
const SizedBox(height: 20,),
ClipPath(
clipper: Potter(points: [
const TopLeftCorner(),
const CenterPoint(),
const TopRightCorner(),
const BottomRightCorner(),
const BottomLeftCorner(),
]
),
child: Container(
color: Colors.red,
width: 342,
height: 357,
),
),
const SizedBox(height: 20,),
ClipPath(
clipper: Potter(points: [
const TopLeftCorner(),
const PointOnShap(xDivider: 2, yDivider: 3),
const TopRightCorner(),
const PointOnShap(xDivider: 3 / 2, yDivider: 2),
const BottomRightCorner(),
const PointOnShap(xDivider: 2, yDivider: 3 / 2),
const BottomLeftCorner(),
const PointOnShap(xDivider: 3, yDivider: 2),
]
),
child: Container(
color: Colors.green,
width: 342,
height: 357,
),
),
const SizedBox(height: 20,),
ClipPath(
clipper: Potter.messageShapeRight(radius: const Radius.circular(20)),
child: Container(
color: Colors.green,
width: 342,
height: 100,
),
),
],
),
),
);
}
}
更多关于Flutter形状转换插件shape_to_go的使用的实战教程也可以访问 https://www.itying.com/category-92-b0.html
1 回复
更多关于Flutter形状转换插件shape_to_go的使用的实战系列教程也可以访问 https://www.itying.com/category-92-b0.html
当然，以下是如何在Flutter中使用shape_to_go插件进行形状转换的一个简单示例。shape_to_go插件允许开发者在Flutter应用中创建和转换各种形状。为了演示其使用，我们首先需要确保已经在pubspec.yaml文件中添加了依赖项：
dependencies:
flutter:
sdk: flutter
shape_to_go: ^最新版本号 # 请替换为实际的最新版本号
然后运行flutter pub get来安装依赖。
以下是一个简单的示例代码，展示如何使用shape_to_go插件来创建一个从圆形渐变到矩形的动画效果：
import 'package:flutter/material.dart';
import 'package:shape_to_go/shape_to_go.dart';
void main() {
runApp(MyApp());
}
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
home: Scaffold(
appBar: AppBar(
title: Text('Shape Transition with shape_to_go'),
),
body: Center(
child: ShapeTransitionExample(),
),
),
);
}
}
class ShapeTransitionExample extends StatefulWidget {
@override
_ShapeTransitionExampleState createState() => _ShapeTransitionExampleState();
}
class _ShapeTransitionExampleState extends State<ShapeTransitionExample> with SingleTickerProviderStateMixin {
late AnimationController _controller;
late Animation<double> _animation;
@override
void initState() {
super.initState();
_controller = AnimationController(
duration: const Duration(seconds: 2),
vsync: this,
)..repeat(reverse: true);
_animation = Tween<double>(begin: 0.0, end: 1.0).animate(_controller);
}
@override
void dispose() {
_controller.dispose();
super.dispose();
}
@override
Widget build(BuildContext context) {
return AnimatedBuilder(
animation: _animation,
child: Container(
color: Colors.transparent,
),
builder: (context, child) {
return ShapeBorderTween(
begin: CircleBorder(),
end: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(0.0),
),
).animate(_animation).build(context) == null
? child
: Container(
decoration: ShapeDecoration(
shape: ShapeBorderTween(
begin: CircleBorder(),
end: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(0.0),
),
).animate(_animation).build(context) as ShapeBorder,
color: Colors.blue,
),
width: 200,
height: 200,
);
},
);
}
}
在这个示例中，我们做了以下几件事：
- 引入必要的包：
flutter/material.dart和shape_to_go/shape_to_go.dart。 - 设置应用结构：创建一个简单的Flutter应用，其中包含一个主屏幕。
- 创建动画控制：使用
AnimationController和Tween来控制动画。在这个例子中，动画将在2秒内从0.0到1.0反复进行。 - 使用
ShapeBorderTween：这是shape_to_go插件提供的一个类，用于在形状之间创建动画过渡。在这个例子中，它从CircleBorder（圆形）过渡到RoundedRectangleBorder（矩形，但边角半径为0，因此看起来像一个普通的矩形）。 - 使用
AnimatedBuilder：用于构建动画效果，它监听动画的变化并相应地更新UI。
请注意，shape_to_go插件的API可能会随着版本更新而变化，因此请查阅最新的文档以获取最准确的信息。此外，由于shape_to_go插件的具体实现可能有所不同，上述代码可能需要根据插件的实际API进行调整。
