FlutterLogo Widget

In this tutorial, I will tell you how to use the FlutterLogo in the flutter.
Before start
The is a small widget, just show a flutter logo. But It is very interesting. Before telling its detail, let's create an empty page to contain our tutorial code.
http://www.w3.org/2000/svg
import "package:flutter/material.dart";
import 'package:flutter_widgets/const/_const.dart';
​
class FlutterLogoPage extends StatefulWidget {
  @override
  _FlutterLogoState createState() => _FlutterLogoState();
}
​
class _FlutterLogoState extends State<FlutterLogoPage> {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text(PageName.FLUTTER_LOGO),
      ),
      body: SingleChildScrollView(
        child: Column(
          children: <Widget>[
            //our code
             SizedBox(height: 600)
          ],
        ),
      ),
    );
  }
}
It shows nothing, but with a title as follows.
Simple Use
If you want to use the FlutterLogo, just add it as follows.
http://www.w3.org/2000/svg
FlutterLogo(size: 100,),
It will show like this, it shows just a logo of the flutter.
Constructor
As common as we do before, I will let you know the constructor of the FlutterLogo.
http://www.w3.org/2000/svg
const FlutterLogo({
    Key key,
    this.size,
    this.colors,
    this.textColor = const Color(0xFF616161),
    this.style = FlutterLogoStyle.markOnly,
    this.duration = const Duration(milliseconds: 750),
    this.curve = Curves.fastOutSlowIn,
  })
We have learned the size parameter, this parameter controls the size of the FlutterLogo. So Let's look at the other parameter.
colors
As the name we have seen, it is about the color, but you should know the parameter is aMaterialColor. So let's use it.
http://www.w3.org/2000/svg
 Container(
              constraints: BoxConstraints.expand(height: 100),
              child: Row(
                mainAxisAlignment: MainAxisAlignment.spaceAround,
                children: <Widget>[
                  FlutterLogo(
                    colors: Colors.red,
                    size: 100,
                  ),
                  FlutterLogo(
                    colors: Colors.green,
                    size: 100,
                  ),
                  FlutterLogo(
                    colors: Colors.yellow,
                    size: 100,
                  ),
                ],
              ),
            ),
style
When we look at its definition, you can see this as below.
http://www.w3.org/2000/svg
  final FlutterLogoStyle style;
The FlutterLogoStyle has three types, the markOnly only show the logo, the horizontal show logo and label in the horizontal direction, the stacked show both but vertical direction. Let's look at the codes.
http://www.w3.org/2000/svg
 Widget _styleLogo() => Column(
        children: <Widget>[
          Row(
            mainAxisAlignment: MainAxisAlignment.spaceAround,
            children: <Widget>[
              Text(
                "markOnly",
                style: TextStyle(color: Colors.blueAccent, fontSize: 30),
              ),
              Text(
                "horizontal",
                style: TextStyle(color: Colors.orangeAccent, fontSize: 30),
              ),
              Text(
                "stacked",
                style: TextStyle(color: Colors.purpleAccent, fontSize: 30),
              )
            ],
          ),
          Row(
            mainAxisAlignment: MainAxisAlignment.spaceAround,
            children: <Widget>[
              FlutterLogo(
                size: 100,
                colors: Colors.blue,
                style: FlutterLogoStyle.markOnly,
              ),
              FlutterLogo(
                size: 100,
                colors: Colors.orange,
                style: FlutterLogoStyle.horizontal,
              ),
              FlutterLogo(
                size: 100,
                colors: Colors.purple,
                style: FlutterLogoStyle.stacked,
              ),
            ],
          ),
        ],
      );
It will show like this.
duration & curve
If the properties of the FlutterLogo have changed, such as color, style, and size, then there will be an animation occur. So the duration parameter controls the time of the animation. The curve controls the type of animation. Let's see an example.
http://www.w3.org/2000/svg
  Widget _durLogo() => Row(
        mainAxisAlignment: MainAxisAlignment.spaceBetween,
        children: <Widget>[
          FlutterLogo(
            size: _size,
            colors: Colors.blue,
            duration: Duration(seconds: 2),
            curve: Curves.bounceOut,
          ),
          Container(
            width: 100,
            height: 100,
            child: RaisedButton(
​
              padding: EdgeInsets.all(10),
              color: GREEN,
              child: Text(
                "Change\nSize",
                style: TextStyle(
                  color: TEXT_BLACK,
                  fontSize: 20,
                ),
                textAlign: TextAlign.center,
              ),
              onPressed: () {
                setState(() {
                  _size += 50;
                  if (_size > 200) {
                    _size = 50.0;
                  }
                });
              },
              shape: CircleBorder(side: BorderSide(color: RED, width: 10)),
            ),
          )
        ],
      );
Then it will show as follows and If you click the button, it will change the size of the logo, so you can see the animation with our setting.
Conclusion
The FlutterLogo is a simple widget, it is easy to use, we mainly use its size,colors,style and animation. But you should code it, then you will learn more detail about the widgets.
Thanks for your reading!
The end.
Whole code in GitHub,star to support.
Before start

Simple Use

Constructor

colors

style

duration & curve

Conclusion

Whole code in GitHub,star to support.

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