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flutter - How to add padding to TextButton

Flutter - TextButton Padding
The TextButton class represents a material design text button. The flutter developers can use text buttons on toolbars, in dialogs, or in line with other content. Text buttons do not have visible borders. The flutter developers should avoid using text buttons where they would blend in with other content such as in the middle of lists. The TextButton style can be overridden with its style parameter.

The following flutter application development tutorial will demonstrate how we can add padding to a Text TextButton. That means how we can add padding to a TextButton widget’s all sides or any specific sides. In the below example code, we will use the TextButton class’s styleFrom() method to add padding to a TextButton widget.

The TextButton class’s styleFrom() method is a static convenience method that constructs a text button ButtonStyle given simple values. By default, TextButton class styleFrom() method returns a ButtonStyle that doesn't override anything.

The ButtonStyle class represents the visual properties that most buttons have in common. The ButtonStyle class’s all properties are null by default.

The flutter developers can add padding to TextButton by passing a value to the styleFrom() method’s padding parameter.

The styleFrom() method’s padding parameter value is an EdgeInsetsGeometry instance which adds padding to the TextButton.

The EdgeInsetsGeometry class represents the base class for EdgeInsets that allows for text-direction-aware resolution.

The EdgeInsets class represents an immutable set of offsets in each of the four cardinal directions. The EdgeInsets class specifies offsets in terms of visual edges, left, top, right, and bottom.

The EdgeInsets.all(double value) constructor creates insets where all the offsets are the value.

The EdgeInsets.symmetric({double vertical = 0.0, double horizontal = 0.0}) constructor creates insets with symmetrical vertical and horizontal offsets. Here we used this constructor to add padding to a TextButton widget’s horizontal and vertical sides.

The styleFrom() method’s side parameter value is a BorderSide instance which adds a border to the TextButton. The BorderSide class color property value is a Color that is the color of this side of the border. The BorderSide class width property value is a double instance that is the width of this side of the border, in logical pixels.
main.dart

import 'package:flutter/material.dart';

void main(){
  runApp(
    MaterialApp(
      theme: ThemeData(primarySwatch: Colors.indigo),
      home: Scaffold(
          appBar: AppBar(
              title: const Text("Flutter - TextButton Padding")
          ),
          body: Center(
            child: TextButton(
                onPressed: (){},
                child: const Text("Click Me"),
                style: TextButton.styleFrom(
                    padding: const EdgeInsets.symmetric(
                        horizontal: 64, vertical: 32
                    ),
                    side: BorderSide(
                        color: Colors.indigo.shade200, width: 1
                    )
                )
            ),
          )
      ),
    ),
  );
}
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