widget_arithmetic 0.0.2

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widget_extensions #

Note: This widget is currently in an experimental phase and the code behind this widget could change and lead to breaking code at any time.

A set of extensions that add useful and interesting functionality to the the set of standard widgets. The Following is possible with this package.

\\Valid Code with These Extensions
(Container(height: 1000, width: 1000).center())).copyWith(fit:StackFit.expand);
\\The Equivalent Code:
  children: <Widget>[  
      children: <Widget>[  
          children: <Widget>[  
            style: TextStyle(  
	         decoration: TextDecoration.underline,  
			 color: Color(0xFFEB4034)),
  style: TextStyle(
   fontSize: 20.0,
   fontWeight: FontWeight.bold  
   children: <Widget>[  
  direction: Axis.horizontal,  
 child: Container(  
  height: 1000,  
  width: 1000,  
fit: StackFit.expand,  

Row #

The | operation can be used to create a row.

// This is Valid and will return a row with two containers

// This will add add the container to the end of the children in the row

// This will add add the container to the begining of the children in the row
  • copyWith method added for rows
  • transpose: will turn a row into a column and attempt to preserve settings

Column #

The + operation can be used to create a column.

// This is Valid and will return a column with two containers

// This will add add the container to the bottom of the children in the column

// This will add add the container to the top of the children in the column
  • copyWith method added for columns
  • transpose: will turn a column into a row and attempt to preserve settings

Stack #

The & operation can be used to create a stack.

// This is Valid and will return a stack with two containers

// This will add add the container to the top of the children in the stack

// This will add add the container to the bottom of the children in the stack
  • copyWith method added for columns

Wrap #

  • Allows Rows and Columns to be wrapped and unwrapped
  • When wrapped and unwrapped, the directionality of the widgets are preserved.
Row().wrap().unwrap() //This will be a row
Column().wrap().unwrap() //This will be a Column

Text #

Added Easy Access to common Text Field Utilities

  • size
  • bold
  • italic
  • underline
  • overline
  • lineThrough
  • copyWith
Text('Hello World').size(10.0).bold().color(Colors.red)

Color #

Adds functionality for hex colors

//Returns the Hex Color from a string. Opacity is a parameter that can be set
//Returns a string from the Hex Color. There is a parameter to include opacity

Widgets #

Append these extensions to any widget. This adds no new functionality, but it can make the code cleaner.

// Old Way
 child: Center(
  child: Containter()

// New Way
  • nothing : An empty widget that takes no space
  • paddingAll : Adds padding on all sides
  • paddingSymmetric : Adds Padding horizontally and vertically
  • paddingLRTB : Adds Padding to each side of the widget
  • center : centers the Widget
  • expanded : surrounds the widget with expanded
  • flexible : surrounds the widget with flexible
  • align : surrounds the widget with align widget
  • baseline : surrounds the widget with baseline Widget
  • positioned : surrounds the widget with positioned widget
  • expandedBox : surrounds the widget with expanded box

List #

  • putBetween will put something between each row item
 children:[list of widgets].putBetween(Spacer())

0.0.2 #

  • Added Comments to each extenions
  • Changed Row Operator from '*' to '|'
  • Changed Column Operator from '/' to '+'
  • Changed Stack Operator from '+' to '&'

0.0.1 #

  • First release of the widget_extension package

Use this package as a library

1. Depend on it

Add this to your package's pubspec.yaml file:

  widget_arithmetic: ^0.0.2

2. Install it

You can install packages from the command line:

with Flutter:

$ flutter pub get

Alternatively, your editor might support flutter pub get. Check the docs for your editor to learn more.

3. Import it

Now in your Dart code, you can use:

import 'package:widget_arithmetic/widget_arithmetic.dart';
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Learn more about scoring.

We analyzed this package on Jul 8, 2020, and provided a score, details, and suggestions below. Analysis was completed with status completed using:

  • Dart: 2.8.4
  • pana: 0.13.13
  • Flutter: 1.17.5

Analysis suggestions

Package not compatible with SDK dart

because of import path [widget_arithmetic] that is in a package requiring null.

Maintenance suggestions

Maintain an example. (-10 points)

Create a short demo in the example/ directory to show how to use this package.

Common filename patterns include main.dart, example.dart, and widget_arithmetic.dart. Packages with multiple examples should provide example/README.md.

For more information see the pub package layout conventions.

Package is pre-v0.1 release. (-10 points)

While nothing is inherently wrong with versions of 0.0.*, it might mean that the author is still experimenting with the general direction of the API.

The package description is too short. (-3 points)

Add more detail to the description field of pubspec.yaml. Use 60 to 180 characters to describe the package, what it does, and its target use case.


Package Constraint Resolved Available
Direct dependencies
Dart SDK >=2.6.0 <3.0.0
flutter 0.0.0
Transitive dependencies
collection 1.14.12 1.14.13
meta 1.1.8 1.2.1
sky_engine 0.0.99
typed_data 1.1.6 1.2.0
vector_math 2.0.8