如何设置带有锥形边框的按钮的形状 [英] How to set the shape of a button with conical border
本文介绍了如何设置带有锥形边框的按钮的形状的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我正在处理 Flutter 中的按钮,并且想在我的应用程序中更改按钮的形状.如何为我的按钮设置锥形边框?
I'm dealing with buttons in flutter,and want to change the shape of the button in my application. How can I get a conical border for my button?
推荐答案
您可以使用 CustomPaint 小部件来绘制您的按钮形状.
You can create your own one using CustomPaint widget to draw your button shape.
class MyButton extends StatelessWidget {
final double width;
final double height;
final Color color;
final Widget child;
final VoidCallback onPressed;
const MyButton({
Key key,
this.width = 150.0,
this.height = 75.0,
this.color,
@required this.child,
@required this.onPressed,
}) : super(key: key);
@override
Widget build(BuildContext context) {
return GestureDetector(
onTap: onPressed,
child: Container(
width: width,
height: height,
child: CustomPaint(
painter: MyButtonPainter(
color: color != null ? color : Theme.of(context).primaryColor),
child: Center(child: child),
),
),
);
}
}
class MyButtonPainter extends CustomPainter {
final Color color;
MyButtonPainter({this.color});
@override
void paint(Canvas canvas, Size size) {
final Paint paint = Paint()..color = color;
final double arrowDepth = size.height / 2;
final Path path = Path();
path.lineTo(size.width - arrowDepth, 0.0);
path.lineTo(size.width, size.height / 2);
path.lineTo(size.width - arrowDepth, size.height);
path.lineTo(0.0, size.height);
path.lineTo(arrowDepth, size.height / 2);
path.close();
canvas.drawPath(path, paint);
}
@override
bool shouldRepaint(CustomPainter oldDelegate) {
return false;
}
}
用法
MyButton(
width: 300.0,
child: Text(
'Time',
style:
Theme.of(context).textTheme.title.copyWith(color: Colors.white),
),
onPressed: () {},
),
您可以根据需要微调代码
You can fine tune the code as per your requirements
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