percent_helper

A helper of percent layout for Flutter.

Getting Started

First, setSource at anywhere:

import 'package:percent_helper/percent_helper.dart' as percent;

void main() {
  // The design size you want
  // The map of safeArea is used with SafeArea Widget
  percent.setSource(1920, 1080, safeArea: {
      "left" : true,
      "right" : true,
      "top" : true,
      "bottom" : true,
    });    
  runApp(new MyApp());
}

Then, use it:

import 'package:percent_helper/percent_helper.dart';
// Full screen
new SizedBox(
            height: height(1920),
            width: width(1080), 

Libraries

percent_helper

Dart

dart:ui
Built-in types and core primitives for a Flutter application. [...]

Core

dart:async
Support for asynchronous programming, with classes such as Future and Stream. [...]
dart:collection
Classes and utilities that supplement the collection support in dart:core. [...]
dart:convert
Encoders and decoders for converting between different data representations, including JSON and UTF-8. [...]
dart:core
Built-in types, collections, and other core functionality for every Dart program. [...]
dart:developer
Interact with developer tools such as the debugger and inspector. [...]
dart:math
Mathematical constants and functions, plus a random number generator. [...]
dart:typed_data
Lists that efficiently handle fixed sized data (for example, unsigned 8 byte integers) and SIMD numeric types. [...]

VM

dart:io
File, socket, HTTP, and other I/O support for non-web applications. [...]
dart:isolate
Concurrent programming using isolates: independent workers that are similar to threads but don't share memory, communicating only via messages. [...]