Badge In Flutter

Badge In Flutter :

Screenshot :

badge.dart

import 'dart:ui' as ui;
import 'package:flutter/material.dart';

class Badge extends StatelessWidget {
  final double size;
  final String text;
  final Widget icon;

  Badge({String text, double size, Widget icon})
      : this.text = text ?? "",
        this.size = size ?? 40.0,
        this.icon = icon ??
            Icon(
              Icons.star,
              color: Colors.white,
              size: size * 0.7,
            );

  @override
  Widget build(BuildContext context) {
    double rectScale = 0.85;
    double paddingScale = 0.4; //kalo size 50, total padding 20, jadinya 20 / 50
    double paddingLeftScale =
        0.4; //kalo total padding 20, left 8, right 12, makanya 8 / 20
    double paddingRightScale =
        0.6; //kalo total padding 20, left 8, right 12, makanya 8 / 20
    double textScale =
        0.5; //budget untuk text di dalam rect stengahnya dari height container, untuk padding atas bawah
    double fontScale =
        1.2; //untuk font 16, heightnya 19, untuk font 90, height nya 107, jadinya 19/16 atau 107/90

    Text child = new Text(
      text,
      style: TextStyle(
          fontWeight: FontWeight.w600,
          fontSize: size * rectScale * textScale / fontScale),
      overflow: TextOverflow.ellipsis,
    );

    double innerTextPadding = size * paddingScale;
    double innerTextPaddingRight = innerTextPadding * paddingRightScale;
    double innerTextPaddingLeft = innerTextPadding * paddingLeftScale;

    var tp = new TextPainter(
        text: new TextSpan(text: child.data, style: child.style),
        textDirection: ui.TextDirection.ltr);

    tp.layout();

    return Stack(
      children: [
        new Container(
          width: tp.size.width + size + innerTextPadding,
          margin: EdgeInsets.symmetric(vertical: size * ((1 - rectScale) / 2)),
          height: size * rectScale,
          color: Colors.transparent,
          child: new Container(
              padding: EdgeInsets.only(
                  left: innerTextPaddingLeft + size,
                  right: innerTextPaddingRight),
              alignment: Alignment.centerRight,
              decoration: new BoxDecoration(
                  color: Color(0xffc7dbf9),
                  borderRadius:
                      new BorderRadius.all(Radius.circular(size * rectScale))),
              child: child),
        ),
        new Container(
          width: size,
          height: size,
          decoration: new BoxDecoration(
            color: Colors.orange,
            shape: BoxShape.circle,
          ),
          child: icon,
        ),
      ],
    );
  }
}

main.dart

import 'package:flutter/material.dart';

import 'badge.dart';

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

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Tutorial',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: MyHomePage(title: 'Badge Flutter'),
    );
  }
}

class MyHomePage extends StatefulWidget {
  MyHomePage({Key key, this.title}) : super(key: key);

  final String title;

  @override
  _MyHomePageState createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
        appBar: AppBar(
          title: Text(widget.title),
        ),
        body: Center(
            child: Badge(
          size: 50.0,
          text: "Flutter Tutorial",
        )));
  }
}

The flutter tutorial  is a website that bring you the latest and amazing resources of code. All the languages codes are included in this website. The languages like flutter, android, java,kotlin etc.with the help of this languages any user can develop the beautiful application

For more information about Flutter. visit www.fluttertutorial.in