Improve code quality

.gitignore

@@ -7,6 +7,7 @@
 .idea/
 
 build/
+coverage/
 ios/.generated/
 ios/Flutter/Generated.xcconfig
 ios/Runner/GeneratedPluginRegistrant.*

.travis.yml

@@ -0,0 +1,23 @@
+language: bash
+os:
+  - osx
+sudo: false
+before_script:
+  - cd ..
+  - git clone https://github.com/flutter/flutter.git -b master
+  - export PATH=$PATH:$PWD/flutter/bin
+  - export PATH=$PATH:$PWD/flutter/bin/cache/dart-sdk/bin
+  - flutter doctor
+  - cd -
+script:
+  # abort on error
+  - set -e
+  - flutter packages get
+  - flutter format --set-exit-if-changed -l 120 lib -l 120 example
+  - flutter analyze lib example
+  - flutter test --no-pub --coverage
+  # export coverage
+  - bash <(curl -s https://codecov.io/bash)
+cache:
+  directories:
+    - $HOME/.pub-cache

CHANGELOG.md

@@ -2,21 +2,40 @@
 
 A collection of loading indicators animated with flutter. Heavily inspired by @tobiasahlin's SpinKit.
 
+## 4.1.0
+
+- Introduces a new SpinKit [SpinKitSquareCircle]
+- Introduces `const` SpinKits
+- Improve code quality across all spinners
+
+### Before
+
+```dart
+final spinkit = SpinKitSquareCircle(color: Colors.white, size: 50.0);
+```
+
+### Now, all SpinKits can be initialized as `const`s
+
+```dart
+const spinkit = SpinKitSquareCircle(color: Colors.white, size: 50.0);
+```
+
+<img src="https://raw.githubusercontent.com/jogboms/flutter_spinkit/master/screenshots/square_circle.gif" width="100px" height="100px">
+
 ## 4.0.0
 
 ### Feature
 
-- `controller` parameter [20248d](https://github.com/jogboms/flutter_spinkit/commit/20248d2f8bd1056a453a5e57f063e8d59dba9b36). Closes [#51](https://github.com/jogboms/flutter_spinkit/issues/51)
+- `controller` parameter [5873e7](https://github.com/jogboms/flutter_spinkit/commit/5873e75430aca52d2ec0c483dcd71a02438f3e8b). Closes [#51](https://github.com/jogboms/flutter_spinkit/issues/51)
 
 ```dart
-SpinKitFadingCircle(
+final spinkit = SpinKitFadingCircle(
   color: Colors.white,
   size: 50.0,
   controller: AnimationController(vsync: this, duration: const Duration(milliseconds: 1200)),
 );
-
 ```
-- DualRing `lineWidth` parameter [5873e7](https://github.com/jogboms/flutter_spinkit/commit/5873e75430aca52d2ec0c483dcd71a02438f3e8b). Closes [#42](https://github.com/jogboms/flutter_spinkit/issues/42)
+- [DualRing] `lineWidth` parameter [9bcfd5](https://github.com/jogboms/flutter_spinkit/commit/9bcfd507459dfabf50d26a27cdb2c11188fce913). Closes [#42](https://github.com/jogboms/flutter_spinkit/issues/42)
 
 ## 3.1.0
 
@@ -33,16 +52,13 @@ SpinKitFadingCircle(
 ### Before
 
 ```dart
-SpinKitFadingCircle(
-  color: Colors.white,
-  size: 50.0,
-);
+final spinkit = SpinKitFadingCircle(color: Colors.white, size: 50.0);
 ```
 
 ### Now, there is an itemBuilder alternative
 
 ```dart
-SpinKitFadingCircle(
+final spinkit = SpinKitFadingCircle(
   itemBuilder: (_, int index) {
     return DecoratedBox(
       decoration: BoxDecoration(

README.md

@@ -1,14 +1,14 @@
 # ✨ Flutter Spinkit
 
-[![pub package](https://img.shields.io/pub/v/flutter_spinkit.svg)](https://pub.dartlang.org/packages/flutter_spinkit)
+[![Build Status - Travis](https://travis-ci.org/jogboms/flutter_spinkit.svg?branch=master)](https://travis-ci.org/jogboms/flutter_spinkit) [![codecov](https://codecov.io/gh/jogboms/flutter_spinkit/branch/master/graph/badge.svg)](https://codecov.io/gh/jogboms/flutter_spinkit) [![pub package](https://img.shields.io/pub/v/flutter_spinkit.svg)](https://pub.dartlang.org/packages/flutter_spinkit)
 
 A collection of loading indicators animated with flutter. Heavily inspired by [@tobiasahlin](https://github.com/tobiasahlin)'s [SpinKit](https://github.com/tobiasahlin/SpinKit).
 
 ## 🎖 Installing
 
 ```yaml
 dependencies:
-  flutter_spinkit: "^4.0.0"
+  flutter_spinkit: "^4.1.0"
 ```
 
 ### ⚡️ Import
@@ -20,15 +20,15 @@ import 'package:flutter_spinkit/flutter_spinkit.dart';
 ## 🎮 How To Use
 
 ```dart
-SpinKitRotatingCircle(
+const spinkit = SpinKitRotatingCircle(
   color: Colors.white,
   size: 50.0,
 );
 ```
 
 ```dart
-SpinKitFadingCircle(
-  itemBuilder: (_, int index) {
+final spinkit = SpinKitFadingCircle(
+  itemBuilder: (BuildContext context, int index) {
     return DecoratedBox(
       decoration: BoxDecoration(
         color: index.isEven ? Colors.red : Colors.green,
@@ -38,10 +38,8 @@ SpinKitFadingCircle(
 );
 ```
 
-#### As from 4.0.0
-
 ```dart
-SpinKitFadingCircle(
+final spinkit = SpinKitSquareCircle(
   color: Colors.white,
   size: 50.0,
   controller: AnimationController(vsync: this, duration: const Duration(milliseconds: 1200)),
@@ -55,164 +53,125 @@ For more info, please, refer to the `showcase.dart` in the example.
 <table>
   <tr>
     <td align="center">
-      <img src="https://raw.githubusercontent.com/ybq/AndroidSpinKit/master/art/RotatingPlane.gif" width="100px">
-      <br />
-      RotatingPlane
+      <img src="https://raw.githubusercontent.com/ybq/AndroidSpinKit/master/art/RotatingPlane.gif" width="100px" height="100px">
       <br />
-      ✅
+      RotatingPlain
     </td>
     <td align="center">
-      <img src="https://raw.githubusercontent.com/ybq/AndroidSpinKit/master/art/DoubleBounce.gif" width="100px">
+      <img src="https://raw.githubusercontent.com/ybq/AndroidSpinKit/master/art/DoubleBounce.gif" width="100px" height="100px">
       <br />
       DoubleBounce
-      <br />
-      ✅
     </td>
     <td align="center">
-      <img src="https://raw.githubusercontent.com/ybq/AndroidSpinKit/master/art/Wave.gif" width="100px">
+      <img src="https://raw.githubusercontent.com/ybq/AndroidSpinKit/master/art/Wave.gif" width="100px" height="100px">
       <br />
       Wave
-      <br />
-      ✅
     </td>
     <td align="center">
-      <img src="https://raw.githubusercontent.com/ybq/AndroidSpinKit/master/art/WanderingCubes.gif" width="100px">
+      <img src="https://raw.githubusercontent.com/ybq/AndroidSpinKit/master/art/WanderingCubes.gif" width="100px" height="100px">
       <br />
       WanderingCubes
-      <br />
-      ✅
     </td>
     <td align="center">
-      <img src="https://raw.githubusercontent.com/jogboms/flutter_spinkit/master/screenshots/FadingFour.gif" width="100px">
+      <img src="https://raw.githubusercontent.com/jogboms/flutter_spinkit/master/screenshots/FadingFour.gif" width="100px" height="100px">
       <br />
       FadingFour
-      <br />
-      ✅
     </td>
     <td align="center">
-      <img src="https://raw.githubusercontent.com/jogboms/flutter_spinkit/master/screenshots/FadingCube.gif" width="100px">
+      <img src="https://raw.githubusercontent.com/jogboms/flutter_spinkit/master/screenshots/FadingCube.gif" width="100px" height="100px">
       <br />
       FadingCube
-      <br />
-      ✅
     </td>
   </tr>
   <tr>
     <td align="center">
-      <img src="https://raw.githubusercontent.com/ybq/AndroidSpinKit/master/art/Pulse.gif" width="100px">
+      <img src="https://raw.githubusercontent.com/ybq/AndroidSpinKit/master/art/Pulse.gif" width="100px" height="100px">
       <br />
       Pulse
-      <br />
-      ✅
     </td>
     <td align="center">
-      <img src="https://raw.githubusercontent.com/ybq/AndroidSpinKit/master/art/ChasingDots.gif" width="100px">
+      <img src="https://raw.githubusercontent.com/ybq/AndroidSpinKit/master/art/ChasingDots.gif" width="100px" height="100px">
       <br />
       ChasingDots
-      <br />
-      ✅
     </td>
     <td align="center">
-      <img src="https://raw.githubusercontent.com/ybq/AndroidSpinKit/master/art/ThreeBounce.gif" width="100px">
+      <img src="https://raw.githubusercontent.com/ybq/AndroidSpinKit/master/art/ThreeBounce.gif" width="100px" height="100px">
       <br />
       ThreeBounce
-      <br />
-      ✅
     </td>
     <td align="center">
-      <img src="https://raw.githubusercontent.com/ybq/AndroidSpinKit/master/art/Circle.gif" width="100px">
+      <img src="https://raw.githubusercontent.com/ybq/AndroidSpinKit/master/art/Circle.gif" width="100px" height="100px">
       <br />
       Circle
-      <br />
-      ✅
     </td>
     <td align="center">
-      <img src="https://raw.githubusercontent.com/ybq/AndroidSpinKit/master/art/CubeGrid.gif" width="100px">
+      <img src="https://raw.githubusercontent.com/ybq/AndroidSpinKit/master/art/CubeGrid.gif" width="100px" height="100px">
       <br />
       CubeGrid
-      <br />
-      ✅
     </td>
     <td align="center">
-      <img src="https://raw.githubusercontent.com/ybq/AndroidSpinKit/master/art/FadingCircle.gif" width="100px">
+      <img src="https://raw.githubusercontent.com/ybq/AndroidSpinKit/master/art/FadingCircle.gif" width="100px" height="100px">
       <br />
       FadingCircle
-      <br />
-      ✅
     </td>
   </tr>
   <tr>
     <td align="center">
-      <img src="https://raw.githubusercontent.com/ybq/AndroidSpinKit/master/art/RotatingCircle.gif" width="100px">
+      <img src="https://raw.githubusercontent.com/ybq/AndroidSpinKit/master/art/RotatingCircle.gif" width="100px" height="100px">
       <br />
       RotatingCircle
-      <br />
-      ✅
     </td>
     <td align="center">
-      <img src="https://raw.githubusercontent.com/ybq/AndroidSpinKit/master/art/FoldingCube.gif" width="100px">
+      <img src="https://raw.githubusercontent.com/ybq/AndroidSpinKit/master/art/FoldingCube.gif" width="100px" height="100px">
       <br />
       FoldingCube
-      <br />
-      ✅
     </td>
     <td align="center">
-      <img src="https://raw.githubusercontent.com/jogboms/flutter_spinkit/master/screenshots/heart.gif" width="100px">
+      <img src="https://raw.githubusercontent.com/jogboms/flutter_spinkit/master/screenshots/heart.gif" width="100px" height="100px">
       <br />
       PumpingHeart
-      <br />
-      ✅
     </td>
     <td align="center">
-      <img src="https://raw.githubusercontent.com/jogboms/flutter_spinkit/master/screenshots/dual-ring.gif" width="100px">
+      <img src="https://raw.githubusercontent.com/jogboms/flutter_spinkit/master/screenshots/dual-ring.gif" width="100px" height="100px">
       <br />
       DualRing
-      <br />
-      ✅
     </td>
     <td align="center">
-      <img src="https://raw.githubusercontent.com/jogboms/flutter_spinkit/master/screenshots/hour-glass.gif" width="100px">
+      <img src="https://raw.githubusercontent.com/jogboms/flutter_spinkit/master/screenshots/hour-glass.gif" width="100px" height="100px">
       <br />
       HourGlass
-      <br />
-      ✅
     </td>
     <td align="center">
-      <img src="https://raw.githubusercontent.com/jogboms/flutter_spinkit/master/screenshots/PouringHourGlass.gif" width="100px">
+      <img src="https://raw.githubusercontent.com/jogboms/flutter_spinkit/master/screenshots/PouringHourGlass.gif" width="100px" height="100px">
       <br />
       PouringHourGlass
-      <br />
-      ✅
     </td>
   </tr>
   <tr>
     <td align="center">
-      <img src="https://raw.githubusercontent.com/jogboms/flutter_spinkit/master/screenshots/grid.gif" width="100px">
+      <img src="https://raw.githubusercontent.com/jogboms/flutter_spinkit/master/screenshots/grid.gif" width="100px" height="100px">
       <br />
       FadingGrid
-      <br />
-      ✅
     </td>
     <td align="center">
-      <img src="https://raw.githubusercontent.com/jogboms/flutter_spinkit/master/screenshots/ring.gif" width="100px">
+      <img src="https://raw.githubusercontent.com/jogboms/flutter_spinkit/master/screenshots/ring.gif" width="100px" height="100px">
       <br />
       Ring
-      <br />
-      ✅
     </td>
     <td align="center">
-      <img src="https://raw.githubusercontent.com/jogboms/flutter_spinkit/master/screenshots/ripple.gif" width="100px">
+      <img src="https://raw.githubusercontent.com/jogboms/flutter_spinkit/master/screenshots/ripple.gif" width="100px" height="100px">
       <br />
       Ripple
-      <br />
-      ✅
     </td>
     <td align="center">
-      <img src="https://raw.githubusercontent.com/jogboms/flutter_spinkit/master/screenshots/spinning-circle.gif" width="100px">
+      <img src="https://raw.githubusercontent.com/jogboms/flutter_spinkit/master/screenshots/spinning-circle.gif" width="100px" height="100px">
       <br />
       SpinningCircle
+    </td>
+    <td align="center">
+      <img src="https://raw.githubusercontent.com/abhishek0706/flutter_spinkit/square_circle/screenshots/square_circle.gif" width="100px" height="100px">
       <br />
-      ✅
+      SquareCircle
     </td>
   </tr>
 </table>

example/ios/.gitignore

@@ -37,6 +37,7 @@ Icon?
 /Flutter/app.zip
 /Flutter/flutter_assets/
 /Flutter/App.framework
+/Flutter/flutter_export_environment.sh
 /Flutter/Flutter.framework
 /Flutter/Generated.xcconfig
 /ServiceDefinitions.json