├── example ├── ios │ ├── Flutter │ │ ├── Debug.xcconfig │ │ ├── Release.xcconfig │ │ └── AppFrameworkInfo.plist │ ├── Runner │ │ ├── Runner-Bridging-Header.h │ │ ├── Assets.xcassets │ │ │ ├── LaunchImage.imageset │ │ │ │ ├── LaunchImage.png │ │ │ │ ├── LaunchImage@2x.png │ │ │ │ ├── LaunchImage@3x.png │ │ │ │ ├── README.md │ │ │ │ └── Contents.json │ │ │ └── AppIcon.appiconset │ │ │ │ ├── Icon-App-20x20@1x.png │ │ │ │ ├── Icon-App-20x20@2x.png │ │ │ │ ├── Icon-App-20x20@3x.png │ │ │ │ ├── Icon-App-29x29@1x.png │ │ │ │ ├── Icon-App-29x29@2x.png │ │ │ │ ├── Icon-App-29x29@3x.png │ │ │ │ ├── Icon-App-40x40@1x.png │ │ │ │ ├── Icon-App-40x40@2x.png │ │ │ │ ├── Icon-App-40x40@3x.png │ │ │ │ ├── Icon-App-60x60@2x.png │ │ │ │ ├── Icon-App-60x60@3x.png │ │ │ │ ├── Icon-App-76x76@1x.png │ │ │ │ ├── Icon-App-76x76@2x.png │ │ │ │ ├── Icon-App-1024x1024@1x.png │ │ │ │ ├── Icon-App-83.5x83.5@2x.png │ │ │ │ └── Contents.json │ │ ├── AppDelegate.swift │ │ ├── Base.lproj │ │ │ ├── Main.storyboard │ │ │ └── LaunchScreen.storyboard │ │ └── Info.plist │ ├── Runner.xcworkspace │ │ └── contents.xcworkspacedata │ ├── Runner.xcodeproj │ │ ├── project.xcworkspace │ │ │ └── contents.xcworkspacedata │ │ ├── xcshareddata │ │ │ └── xcschemes │ │ │ │ └── Runner.xcscheme │ │ └── project.pbxproj │ └── .gitignore ├── android │ ├── gradle.properties │ ├── .gitignore │ ├── app │ │ ├── src │ │ │ ├── main │ │ │ │ ├── res │ │ │ │ │ ├── mipmap-hdpi │ │ │ │ │ │ └── ic_launcher.png │ │ │ │ │ ├── mipmap-mdpi │ │ │ │ │ │ └── ic_launcher.png │ │ │ │ │ ├── mipmap-xhdpi │ │ │ │ │ │ └── ic_launcher.png │ │ │ │ │ ├── mipmap-xxhdpi │ │ │ │ │ │ └── ic_launcher.png │ │ │ │ │ ├── mipmap-xxxhdpi │ │ │ │ │ │ └── ic_launcher.png │ │ │ │ │ ├── values │ │ │ │ │ │ └── styles.xml │ │ │ │ │ └── drawable │ │ │ │ │ │ └── launch_background.xml │ │ │ │ ├── kotlin │ │ │ │ │ └── com │ │ │ │ │ │ └── example │ │ │ │ │ │ └── flutter_password_strength_example │ │ │ │ │ │ └── MainActivity.kt │ │ │ │ └── AndroidManifest.xml │ │ │ ├── debug │ │ │ │ └── AndroidManifest.xml │ │ │ └── profile │ │ │ │ └── AndroidManifest.xml │ │ └── build.gradle │ ├── gradle │ │ └── wrapper │ │ │ └── gradle-wrapper.properties │ ├── settings.gradle │ └── build.gradle ├── web │ └── index.html ├── lib │ ├── main.dart │ ├── flutter_password_strength │ │ ├── src │ │ │ └── estimate_bruteforce_strength.dart │ │ └── flutter_password_strength.dart │ └── component │ │ ├── password_field.dart │ │ └── sign_in_form.dart ├── test │ └── widget_test.dart ├── README.md ├── pubspec.yaml └── pubspec.lock ├── renovate.json ├── CHANGELOG.md ├── test └── flutter_password_strength_test.dart ├── .github └── workflows │ └── main.yml ├── lib ├── src │ └── estimate_bruteforce_strength.dart └── flutter_password_strength.dart ├── LICENSE ├── README.md ├── pubspec.yaml ├── .gitignore └── pubspec.lock /example/ios/Flutter/Debug.xcconfig: -------------------------------------------------------------------------------- 1 | #include "Generated.xcconfig" 2 | -------------------------------------------------------------------------------- /example/ios/Flutter/Release.xcconfig: -------------------------------------------------------------------------------- 1 | #include "Generated.xcconfig" 2 | -------------------------------------------------------------------------------- /renovate.json: -------------------------------------------------------------------------------- 1 | { 2 | "extends": [ 3 | "config:base" 4 | ] 5 | } 6 | -------------------------------------------------------------------------------- /example/ios/Runner/Runner-Bridging-Header.h: -------------------------------------------------------------------------------- 1 | #import "GeneratedPluginRegistrant.h" -------------------------------------------------------------------------------- /example/android/gradle.properties: -------------------------------------------------------------------------------- 1 | org.gradle.jvmargs=-Xmx1536M 2 | android.enableR8=true 3 | android.useAndroidX=true 4 | android.enableJetifier=true 5 | -------------------------------------------------------------------------------- /example/android/.gitignore: -------------------------------------------------------------------------------- 1 | gradle-wrapper.jar 2 | /.gradle 3 | /captures/ 4 | /gradlew 5 | /gradlew.bat 6 | /local.properties 7 | GeneratedPluginRegistrant.java 8 | -------------------------------------------------------------------------------- /example/android/app/src/main/res/mipmap-hdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/JinHoSo/flutter-password-strength/HEAD/example/android/app/src/main/res/mipmap-hdpi/ic_launcher.png -------------------------------------------------------------------------------- /example/android/app/src/main/res/mipmap-mdpi/ic_launcher.png: -------------------------------------------------------------------------------- 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-------------------------------------------------------------------------------- /example/ios/Runner.xcworkspace/contents.xcworkspacedata: -------------------------------------------------------------------------------- 1 | 2 | 4 | 6 | 7 | 8 | -------------------------------------------------------------------------------- /example/ios/Runner.xcodeproj/project.xcworkspace/contents.xcworkspacedata: -------------------------------------------------------------------------------- 1 | 2 | 4 | 6 | 7 | 8 | -------------------------------------------------------------------------------- /CHANGELOG.md: -------------------------------------------------------------------------------- 1 | ## [0.1.6] - migrate to null safety. 2 | 3 | ## [0.1.5] - Bugfix: Dispose Issue. 4 | 5 | ## [0.1.4] - changed license to MIT. 6 | 7 | ## [0.1.3] - applied flutter format. 8 | 9 | ## [0.1.2] - added example. 10 | 11 | ## [0.0.1] - initial release. 12 | -------------------------------------------------------------------------------- /example/android/app/src/main/kotlin/com/example/flutter_password_strength_example/MainActivity.kt: -------------------------------------------------------------------------------- 1 | package com.example.flutter_password_strength_example 2 | 3 | import io.flutter.embedding.android.FlutterActivity 4 | 5 | class MainActivity: FlutterActivity() { 6 | 7 | } 8 | -------------------------------------------------------------------------------- /example/web/index.html: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | flutter_password_strength_example 6 | 7 | 8 | 9 | 10 | 11 | -------------------------------------------------------------------------------- /example/android/gradle/wrapper/gradle-wrapper.properties: -------------------------------------------------------------------------------- 1 | #Fri Jun 23 08:50:38 CEST 2017 2 | distributionBase=GRADLE_USER_HOME 3 | distributionPath=wrapper/dists 4 | zipStoreBase=GRADLE_USER_HOME 5 | zipStorePath=wrapper/dists 6 | distributionUrl=https\://services.gradle.org/distributions/gradle-6.0.1-all.zip 7 | -------------------------------------------------------------------------------- /example/ios/Runner/Assets.xcassets/LaunchImage.imageset/README.md: -------------------------------------------------------------------------------- 1 | # Launch Screen Assets 2 | 3 | You can customize the launch screen with your own desired assets by replacing the image files in this directory. 4 | 5 | You can also do it by opening your Flutter project's Xcode project with `open ios/Runner.xcworkspace`, selecting `Runner/Assets.xcassets` in the Project Navigator and dropping in the desired images. -------------------------------------------------------------------------------- /example/android/app/src/debug/AndroidManifest.xml: -------------------------------------------------------------------------------- 1 | 3 | 6 | 7 | 8 | -------------------------------------------------------------------------------- /example/android/app/src/profile/AndroidManifest.xml: -------------------------------------------------------------------------------- 1 | 3 | 6 | 7 | 8 | -------------------------------------------------------------------------------- /example/android/app/src/main/res/values/styles.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 8 | 9 | -------------------------------------------------------------------------------- /test/flutter_password_strength_test.dart: -------------------------------------------------------------------------------- 1 | import 'package:flutter_test/flutter_test.dart'; 2 | 3 | import 'package:flutter_password_strength/flutter_password_strength.dart'; 4 | 5 | void main() { 6 | test('calculate password strength', () { 7 | String password = 'jkdf928n8@0#@ijds!'; 8 | 9 | FlutterPasswordStrength(password: password, strengthCallback: (strength){ 10 | expect(strength > 0.9, true); 11 | }); 12 | }); 13 | } 14 | -------------------------------------------------------------------------------- /example/ios/Runner/AppDelegate.swift: -------------------------------------------------------------------------------- 1 | import UIKit 2 | import Flutter 3 | 4 | @UIApplicationMain 5 | @objc class AppDelegate: FlutterAppDelegate { 6 | override func application( 7 | _ application: UIApplication, 8 | didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]? 9 | ) -> Bool { 10 | GeneratedPluginRegistrant.register(with: self) 11 | return super.application(application, didFinishLaunchingWithOptions: launchOptions) 12 | } 13 | } 14 | -------------------------------------------------------------------------------- /.github/workflows/main.yml: -------------------------------------------------------------------------------- 1 | name: Publish Flutter Package 2 | 3 | on: 4 | release: 5 | types: [published] 6 | 7 | jobs: 8 | publish: 9 | 10 | runs-on: ubuntu-latest 11 | 12 | steps: 13 | - name: Checkout 14 | uses: actions/checkout@v1 15 | - name: Publish 16 | uses: sakebook/actions-flutter-pub-publisher@v1.2.0 17 | with: 18 | credential: ${{ secrets.CREDENTIAL_JSON }} 19 | flutter_package: true 20 | skip_test: false 21 | -------------------------------------------------------------------------------- /example/android/app/src/main/res/drawable/launch_background.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 12 | 13 | -------------------------------------------------------------------------------- /example/ios/Runner/Assets.xcassets/LaunchImage.imageset/Contents.json: -------------------------------------------------------------------------------- 1 | { 2 | "images" : [ 3 | { 4 | "idiom" : "universal", 5 | "filename" : "LaunchImage.png", 6 | "scale" : "1x" 7 | }, 8 | { 9 | "idiom" : "universal", 10 | "filename" : "LaunchImage@2x.png", 11 | "scale" : "2x" 12 | }, 13 | { 14 | "idiom" : "universal", 15 | "filename" : "LaunchImage@3x.png", 16 | "scale" : "3x" 17 | } 18 | ], 19 | "info" : { 20 | "version" : 1, 21 | "author" : "xcode" 22 | } 23 | } 24 | -------------------------------------------------------------------------------- /example/android/settings.gradle: -------------------------------------------------------------------------------- 1 | include ':app' 2 | 3 | def flutterProjectRoot = rootProject.projectDir.parentFile.toPath() 4 | 5 | def plugins = new Properties() 6 | def pluginsFile = new File(flutterProjectRoot.toFile(), '.flutter-plugins') 7 | if (pluginsFile.exists()) { 8 | pluginsFile.withReader('UTF-8') { reader -> plugins.load(reader) } 9 | } 10 | 11 | plugins.each { name, path -> 12 | def pluginDirectory = flutterProjectRoot.resolve(path).resolve('android').toFile() 13 | include ":$name" 14 | project(":$name").projectDir = pluginDirectory 15 | } 16 | -------------------------------------------------------------------------------- /example/ios/.gitignore: -------------------------------------------------------------------------------- 1 | *.mode1v3 2 | *.mode2v3 3 | *.moved-aside 4 | *.pbxuser 5 | *.perspectivev3 6 | **/*sync/ 7 | .sconsign.dblite 8 | .tags* 9 | **/.vagrant/ 10 | **/DerivedData/ 11 | Icon? 12 | **/Pods/ 13 | **/.symlinks/ 14 | profile 15 | xcuserdata 16 | **/.generated/ 17 | Flutter/App.framework 18 | Flutter/Flutter.framework 19 | Flutter/Flutter.podspec 20 | Flutter/Generated.xcconfig 21 | Flutter/app.flx 22 | Flutter/app.zip 23 | Flutter/flutter_assets/ 24 | Flutter/flutter_export_environment.sh 25 | ServiceDefinitions.json 26 | Runner/GeneratedPluginRegistrant.* 27 | 28 | # Exceptions to above rules. 29 | !default.mode1v3 30 | !default.mode2v3 31 | !default.pbxuser 32 | !default.perspectivev3 33 | -------------------------------------------------------------------------------- /example/android/build.gradle: -------------------------------------------------------------------------------- 1 | buildscript { 2 | ext.kotlin_version = '1.3.50' 3 | repositories { 4 | google() 5 | jcenter() 6 | } 7 | 8 | dependencies { 9 | classpath 'com.android.tools.build:gradle:3.5.0' 10 | classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version" 11 | } 12 | } 13 | 14 | allprojects { 15 | repositories { 16 | google() 17 | jcenter() 18 | } 19 | } 20 | 21 | rootProject.buildDir = '../build' 22 | subprojects { 23 | project.buildDir = "${rootProject.buildDir}/${project.name}" 24 | } 25 | subprojects { 26 | project.evaluationDependsOn(':app') 27 | } 28 | 29 | task clean(type: Delete) { 30 | delete rootProject.buildDir 31 | } 32 | -------------------------------------------------------------------------------- /example/ios/Flutter/AppFrameworkInfo.plist: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | CFBundleDevelopmentRegion 6 | $(DEVELOPMENT_LANGUAGE) 7 | CFBundleExecutable 8 | App 9 | CFBundleIdentifier 10 | io.flutter.flutter.app 11 | CFBundleInfoDictionaryVersion 12 | 6.0 13 | CFBundleName 14 | App 15 | CFBundlePackageType 16 | FMWK 17 | CFBundleShortVersionString 18 | 1.0 19 | CFBundleSignature 20 | ???? 21 | CFBundleVersion 22 | 1.0 23 | MinimumOSVersion 24 | 8.0 25 | 26 | 27 | -------------------------------------------------------------------------------- /example/lib/main.dart: -------------------------------------------------------------------------------- 1 | import 'package:flutter/material.dart'; 2 | import './component/sign_in_form.dart'; 3 | 4 | void main() => runApp(MyApp()); 5 | 6 | class MyApp extends StatelessWidget { 7 | @override 8 | Widget build(BuildContext context) { 9 | return MaterialApp( 10 | title: 'Password Strength Demo', 11 | theme: ThemeData( 12 | primarySwatch: Colors.blue, 13 | ), 14 | home: MyHomePage(title: 'Password Strength Demo'), 15 | ); 16 | } 17 | } 18 | 19 | class MyHomePage extends StatefulWidget { 20 | MyHomePage({Key? key, this.title}) : super(key: key); 21 | 22 | final String? title; 23 | 24 | @override 25 | _MyHomePageState createState() => _MyHomePageState(); 26 | } 27 | 28 | class _MyHomePageState extends State { 29 | 30 | @override 31 | Widget build(BuildContext context) { 32 | return Scaffold( 33 | appBar: AppBar( 34 | title: Text(widget.title!), 35 | ), 36 | body: Center( 37 | child: SignInForm() 38 | ), 39 | ); 40 | } 41 | } 42 | -------------------------------------------------------------------------------- /lib/src/estimate_bruteforce_strength.dart: -------------------------------------------------------------------------------- 1 | /* 2 | * Author : Julien Scholz 3 | * https://github.com/Pikaju/PasswordStrength 4 | */ 5 | import 'dart:math'; 6 | 7 | double estimateBruteforceStrength(String password) { 8 | if (password.isEmpty) return 0.0; 9 | 10 | // Check which types of characters are used and create an opinionated bonus. 11 | double charsetBonus; 12 | if (RegExp(r'^[a-z]*$').hasMatch(password)) { 13 | charsetBonus = 1.0; 14 | } else if (RegExp(r'^[a-z0-9]*$').hasMatch(password)) { 15 | charsetBonus = 1.2; 16 | } else if (RegExp(r'^[a-zA-Z]*$').hasMatch(password)) { 17 | charsetBonus = 1.3; 18 | } else if (RegExp(r'^[a-z\-_!?]*$').hasMatch(password)) { 19 | charsetBonus = 1.3; 20 | } else if (RegExp(r'^[a-zA-Z0-9]*$').hasMatch(password)) { 21 | charsetBonus = 1.5; 22 | } else { 23 | charsetBonus = 1.8; 24 | } 25 | 26 | final logisticFunction = (double x) { 27 | return 1.0 / (1.0 + exp(-x)); 28 | }; 29 | 30 | final curve = (double x) { 31 | return logisticFunction((x / 3.0) - 4.0); 32 | }; 33 | 34 | return curve(password.length * charsetBonus); 35 | } 36 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | MIT License 2 | 3 | Copyright (c) 2019 JinHoSo 4 | 5 | Permission is hereby granted, free of charge, to any person obtaining a copy 6 | of this software and associated documentation files (the "Software"), to deal 7 | in the Software without restriction, including without limitation the rights 8 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 9 | copies of the Software, and to permit persons to whom the Software is 10 | furnished to do so, subject to the following conditions: 11 | 12 | The above copyright notice and this permission notice shall be included in all 13 | copies or substantial portions of the Software. 14 | 15 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 18 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 19 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 20 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 21 | SOFTWARE. 22 | -------------------------------------------------------------------------------- /example/lib/flutter_password_strength/src/estimate_bruteforce_strength.dart: -------------------------------------------------------------------------------- 1 | /* 2 | * Author : Julien Scholz 3 | * https://github.com/Pikaju/PasswordStrength 4 | */ 5 | import 'dart:math'; 6 | 7 | double estimateBruteforceStrength(String password) { 8 | if (password.isEmpty) return 0.0; 9 | 10 | // Check which types of characters are used and create an opinionated bonus. 11 | double charsetBonus; 12 | if (RegExp(r'^[a-z]*$').hasMatch(password)) { 13 | charsetBonus = 1.0; 14 | } else if (RegExp(r'^[a-z0-9]*$').hasMatch(password)) { 15 | charsetBonus = 1.2; 16 | } else if (RegExp(r'^[a-zA-Z]*$').hasMatch(password)) { 17 | charsetBonus = 1.3; 18 | } else if (RegExp(r'^[a-z\-_!?]*$').hasMatch(password)) { 19 | charsetBonus = 1.3; 20 | } else if (RegExp(r'^[a-zA-Z0-9]*$').hasMatch(password)) { 21 | charsetBonus = 1.5; 22 | } else { 23 | charsetBonus = 1.8; 24 | } 25 | 26 | final logisticFunction = (double x) { 27 | return 1.0 / (1.0 + exp(-x)); 28 | }; 29 | 30 | final curve = (double x) { 31 | return logisticFunction((x / 3.0) - 4.0); 32 | }; 33 | 34 | return curve(password.length * charsetBonus); 35 | } -------------------------------------------------------------------------------- /example/test/widget_test.dart: -------------------------------------------------------------------------------- 1 | // This is a basic Flutter widget test. 2 | // 3 | // To perform an interaction with a widget in your test, use the WidgetTester 4 | // utility that Flutter provides. For example, you can send tap and scroll 5 | // gestures. You can also use WidgetTester to find child widgets in the widget 6 | // tree, read text, and verify that the values of widget properties are correct. 7 | 8 | import 'package:flutter/material.dart'; 9 | import 'package:flutter_test/flutter_test.dart'; 10 | 11 | import 'package:flutter_password_strength_example/main.dart'; 12 | 13 | void main() { 14 | testWidgets('Counter increments smoke test', (WidgetTester tester) async { 15 | // Build our app and trigger a frame. 16 | await tester.pumpWidget(MyApp()); 17 | 18 | // Verify that our counter starts at 0. 19 | expect(find.text('0'), findsOneWidget); 20 | expect(find.text('1'), findsNothing); 21 | 22 | // Tap the '+' icon and trigger a frame. 23 | await tester.tap(find.byIcon(Icons.add)); 24 | await tester.pump(); 25 | 26 | // Verify that our counter has incremented. 27 | expect(find.text('0'), findsNothing); 28 | expect(find.text('1'), findsOneWidget); 29 | }); 30 | } 31 | -------------------------------------------------------------------------------- /example/README.md: -------------------------------------------------------------------------------- 1 | # flutter_password_strength 2 | 3 | A password strength checker for flutter. 4 | 5 | ## Features 6 | 7 | - Linear strength indicator. 8 | - Customise colors, borders, etc. 9 | 10 | ## Screenshot 11 | 12 | ![](https://media.giphy.com/media/kbuhBEahzQAtifnfSL/giphy.gif) 13 | 14 | ## Usage 15 | ``` 16 | import 'package:flutter_password_strength/flutter_password_strength.dart'; 17 | 18 | FlutterPasswordStrength( 19 | password: _password, 20 | strengthCallback: (strength){ 21 | debugPrint(strength.toString()); 22 | } 23 | ) 24 | ``` 25 | 26 | ### Arguments 27 | 28 | | Arguments | Default | Type | Description | 29 | | :------------ |---------------:| :---------------| :-----| 30 | | password | required | String | Password | 31 | | width | null | double | Strength bar width | 32 | | height | 5 | double | Strength bar height | 33 | | strengthColors | null | TweenSequence | `0.0 ~ 0.25 : red, 0.26 ~ 0.5 : yellow, 0.51 ~ 0.75 : blue, 0.76 ~ 1 : green` | 34 | | backgroundColor | Colors.grey| Color | background for strength bar | 35 | | radius | 0 | double | Strength bar radius | 36 | | duration | 3000 | Duration | Animation duration | 37 | | strengthCallback | null | `void Function(double strength)` | Strength callback, return between 0 to 1 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # flutter_password_strength 2 | 3 | A password strength checker for flutter. 4 | 5 | ## Features 6 | 7 | - Linear strength indicator. 8 | - Customise colors, borders, etc. 9 | 10 | ## Screenshot 11 | 12 | ![](https://media.giphy.com/media/kbuhBEahzQAtifnfSL/giphy.gif) 13 | 14 | ## Usage 15 | ``` 16 | import 'package:flutter_password_strength/flutter_password_strength.dart'; 17 | 18 | FlutterPasswordStrength( 19 | password: _password, 20 | strengthCallback: (strength){ 21 | debugPrint(strength.toString()); 22 | } 23 | ) 24 | ``` 25 | 26 | ### Arguments 27 | 28 | | Arguments | Default | Type | Description | 29 | | :------------ |---------------:| :---------------| :-----| 30 | | password | required | String | Password | 31 | | width | null | double | Strength bar width | 32 | | height | 5 | double | Strength bar height | 33 | | strengthColors | null | TweenSequence | `0.0 ~ 0.25 : red, 0.26 ~ 0.5 : yellow, 0.51 ~ 0.75 : blue, 0.76 ~ 1 : green` | 34 | | backgroundColor | Colors.grey| Color | background for strength bar | 35 | | radius | 0 | double | Strength bar radius | 36 | | duration | milliseconds: 300 | Duration | Animation duration | 37 | | strengthCallback | null | `void Function(double strength)` | Strength callback, return between 0 to 1 | 38 | -------------------------------------------------------------------------------- /example/lib/component/password_field.dart: -------------------------------------------------------------------------------- 1 | import 'package:flutter/material.dart'; 2 | import 'package:flutter/widgets.dart'; 3 | 4 | class PasswordField extends StatefulWidget { 5 | final Function onSaved; 6 | final Function onChanged; 7 | 8 | PasswordField({Key? key, required this.onSaved, required this.onChanged}) 9 | : super(key: key); 10 | 11 | @override 12 | _PasswordFieldState createState() => _PasswordFieldState(); 13 | } 14 | 15 | class _PasswordFieldState extends State { 16 | 17 | String? validatePassword(String? value) { 18 | if (value==null || value.isEmpty) { 19 | return 'enter password.'; 20 | } 21 | 22 | if (value.length < 4) 23 | return 'too short.'; 24 | else 25 | return null; 26 | } 27 | 28 | Widget build(BuildContext context) { 29 | return TextFormField( 30 | keyboardType: TextInputType.text, 31 | obscureText: true, 32 | validator: validatePassword, 33 | autovalidateMode: AutovalidateMode.onUserInteraction, 34 | onChanged: (value) { 35 | widget.onChanged(value); 36 | }, 37 | onSaved: (value) { 38 | widget.onSaved(value); 39 | }, 40 | decoration: InputDecoration( 41 | helperText: 'required', 42 | labelText: 'Password'), 43 | ); 44 | } 45 | } 46 | -------------------------------------------------------------------------------- /example/ios/Runner/Base.lproj/Main.storyboard: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | -------------------------------------------------------------------------------- /example/ios/Runner/Info.plist: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | CFBundleDevelopmentRegion 6 | $(DEVELOPMENT_LANGUAGE) 7 | CFBundleExecutable 8 | $(EXECUTABLE_NAME) 9 | CFBundleIdentifier 10 | $(PRODUCT_BUNDLE_IDENTIFIER) 11 | CFBundleInfoDictionaryVersion 12 | 6.0 13 | CFBundleName 14 | flutter_password_strength_example 15 | CFBundlePackageType 16 | APPL 17 | CFBundleShortVersionString 18 | $(FLUTTER_BUILD_NAME) 19 | CFBundleSignature 20 | ???? 21 | CFBundleVersion 22 | $(FLUTTER_BUILD_NUMBER) 23 | LSRequiresIPhoneOS 24 | 25 | UILaunchStoryboardName 26 | LaunchScreen 27 | UIMainStoryboardFile 28 | Main 29 | UISupportedInterfaceOrientations 30 | 31 | UIInterfaceOrientationPortrait 32 | UIInterfaceOrientationLandscapeLeft 33 | UIInterfaceOrientationLandscapeRight 34 | 35 | UISupportedInterfaceOrientations~ipad 36 | 37 | UIInterfaceOrientationPortrait 38 | UIInterfaceOrientationPortraitUpsideDown 39 | UIInterfaceOrientationLandscapeLeft 40 | UIInterfaceOrientationLandscapeRight 41 | 42 | UIViewControllerBasedStatusBarAppearance 43 | 44 | 45 | 46 | -------------------------------------------------------------------------------- /example/android/app/src/main/AndroidManifest.xml: -------------------------------------------------------------------------------- 1 | 3 | 8 | 11 | 18 | 22 | 23 | 24 | 25 | 26 | 27 | 30 | 31 | 32 | -------------------------------------------------------------------------------- /pubspec.yaml: -------------------------------------------------------------------------------- 1 | name: flutter_password_strength 2 | description: A password strength checker for flutter, works for Android and iOS. 3 | version: 0.1.6 4 | homepage: https://github.com/JinHoSo/flutter-password-strength 5 | 6 | environment: 7 | sdk: ">=2.12.0 <3.0.0" 8 | 9 | dependencies: 10 | flutter: 11 | sdk: flutter 12 | 13 | dev_dependencies: 14 | flutter_test: 15 | sdk: flutter 16 | 17 | # For information on the generic Dart part of this file, see the 18 | # following page: https://dart.dev/tools/pub/pubspec 19 | 20 | # The following section is specific to Flutter. 21 | flutter: 22 | 23 | # To add assets to your package, add an assets section, like this: 24 | # assets: 25 | # - images/a_dot_burr.jpeg 26 | # - images/a_dot_ham.jpeg 27 | # 28 | # For details regarding assets in packages, see 29 | # https://flutter.dev/assets-and-images/#from-packages 30 | # 31 | # An image asset can refer to one or more resolution-specific "variants", see 32 | # https://flutter.dev/assets-and-images/#resolution-aware. 33 | 34 | # To add custom fonts to your package, add a fonts section here, 35 | # in this "flutter" section. Each entry in this list should have a 36 | # "family" key with the font family name, and a "fonts" key with a 37 | # list giving the asset and other descriptors for the font. For 38 | # example: 39 | # fonts: 40 | # - family: Schyler 41 | # fonts: 42 | # - asset: fonts/Schyler-Regular.ttf 43 | # - asset: fonts/Schyler-Italic.ttf 44 | # style: italic 45 | # - family: Trajan Pro 46 | # fonts: 47 | # - asset: fonts/TrajanPro.ttf 48 | # - asset: fonts/TrajanPro_Bold.ttf 49 | # weight: 700 50 | # 51 | # For details regarding fonts in packages, see 52 | # https://flutter.dev/custom-fonts/#from-packages 53 | -------------------------------------------------------------------------------- /.gitignore: -------------------------------------------------------------------------------- 1 | # Miscellaneous 2 | *.class 3 | *.log 4 | *.pyc 5 | *.swp 6 | .DS_Store 7 | .atom/ 8 | .buildlog/ 9 | .history 10 | .svn/ 11 | 12 | # IntelliJ related 13 | *.iml 14 | *.ipr 15 | *.iws 16 | .idea/ 17 | 18 | # The .vscode folder contains launch configuration and tasks you configure in 19 | # VS Code which you may wish to be included in version control, so this line 20 | # is commented out by default. 21 | #.vscode/ 22 | 23 | # Flutter/Dart/Pub related 24 | **/doc/api/ 25 | .dart_tool/ 26 | .flutter-plugins 27 | .flutter-plugins-dependencies 28 | .packages 29 | .pub-cache/ 30 | .pub/ 31 | build/ 32 | 33 | # Android related 34 | **/android/**/gradle-wrapper.jar 35 | **/android/.gradle 36 | **/android/captures/ 37 | **/android/gradlew 38 | **/android/gradlew.bat 39 | **/android/local.properties 40 | **/android/**/GeneratedPluginRegistrant.java 41 | 42 | # iOS/XCode related 43 | **/ios/**/*.mode1v3 44 | **/ios/**/*.mode2v3 45 | **/ios/**/*.moved-aside 46 | **/ios/**/*.pbxuser 47 | **/ios/**/*.perspectivev3 48 | **/ios/**/*sync/ 49 | **/ios/**/.sconsign.dblite 50 | **/ios/**/.tags* 51 | **/ios/**/.vagrant/ 52 | **/ios/**/DerivedData/ 53 | **/ios/**/Icon? 54 | **/ios/**/Pods/ 55 | **/ios/**/.symlinks/ 56 | **/ios/**/profile 57 | **/ios/**/xcuserdata 58 | **/ios/.generated/ 59 | **/ios/Flutter/App.framework 60 | **/ios/Flutter/Flutter.framework 61 | **/ios/Flutter/Flutter.podspec 62 | **/ios/Flutter/Generated.xcconfig 63 | **/ios/Flutter/app.flx 64 | **/ios/Flutter/app.zip 65 | **/ios/Flutter/flutter_assets/ 66 | **/ios/Flutter/flutter_export_environment.sh 67 | **/ios/ServiceDefinitions.json 68 | **/ios/Runner/GeneratedPluginRegistrant.* 69 | 70 | # Exceptions to above rules. 71 | !**/ios/**/default.mode1v3 72 | !**/ios/**/default.mode2v3 73 | !**/ios/**/default.pbxuser 74 | !**/ios/**/default.perspectivev3 75 | !/packages/flutter_tools/test/data/dart_dependencies_test/**/.packages 76 | -------------------------------------------------------------------------------- /example/lib/component/sign_in_form.dart: -------------------------------------------------------------------------------- 1 | import 'package:flutter/material.dart'; 2 | import 'package:flutter/widgets.dart'; 3 | 4 | import 'password_field.dart'; 5 | import '../flutter_password_strength/flutter_password_strength.dart'; 6 | 7 | class SignInForm extends StatefulWidget { 8 | @override 9 | _SignInFormState createState() => _SignInFormState(); 10 | } 11 | 12 | class _SignInFormState extends State { 13 | final _formKey = GlobalKey(); 14 | 15 | String _password = ""; 16 | 17 | Widget build(BuildContext context) { 18 | return Container( 19 | padding: const EdgeInsets.symmetric(vertical: 8.0, horizontal: 30.0), 20 | child: Form( 21 | key: _formKey, 22 | child: Column(children: [ 23 | PasswordField(onChanged: (value) { 24 | setState(() { 25 | _password = value; 26 | }); 27 | }, onSaved: (value) { 28 | setState(() { 29 | _password = value; 30 | }); 31 | }), 32 | Padding( 33 | padding: const EdgeInsets.fromLTRB(0, 20, 0, 0), 34 | child: FlutterPasswordStrength( 35 | password: _password, 36 | strengthCallback: (strength) { 37 | debugPrint(strength.toString()); 38 | }, 39 | )), 40 | Padding( 41 | padding: const EdgeInsets.fromLTRB(0, 20, 0, 0), 42 | child: FlutterPasswordStrength( 43 | password: _password, width: 100)), 44 | Padding( 45 | padding: const EdgeInsets.fromLTRB(0, 20, 0, 0), 46 | child: FlutterPasswordStrength( 47 | password: _password, 48 | width: 200, 49 | height: 30, 50 | radius: 15, 51 | )), 52 | ]))); 53 | } 54 | } 55 | -------------------------------------------------------------------------------- /example/android/app/build.gradle: -------------------------------------------------------------------------------- 1 | def localProperties = new Properties() 2 | def localPropertiesFile = rootProject.file('local.properties') 3 | if (localPropertiesFile.exists()) { 4 | localPropertiesFile.withReader('UTF-8') { reader -> 5 | localProperties.load(reader) 6 | } 7 | } 8 | 9 | def flutterRoot = localProperties.getProperty('flutter.sdk') 10 | if (flutterRoot == null) { 11 | throw new GradleException("Flutter SDK not found. Define location with flutter.sdk in the local.properties file.") 12 | } 13 | 14 | def flutterVersionCode = localProperties.getProperty('flutter.versionCode') 15 | if (flutterVersionCode == null) { 16 | flutterVersionCode = '1' 17 | } 18 | 19 | def flutterVersionName = localProperties.getProperty('flutter.versionName') 20 | if (flutterVersionName == null) { 21 | flutterVersionName = '1.0' 22 | } 23 | 24 | apply plugin: 'com.android.application' 25 | apply plugin: 'kotlin-android' 26 | apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle" 27 | 28 | android { 29 | compileSdkVersion 28 30 | 31 | sourceSets { 32 | main.java.srcDirs += 'src/main/kotlin' 33 | } 34 | 35 | lintOptions { 36 | disable 'InvalidPackage' 37 | } 38 | 39 | defaultConfig { 40 | // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html). 41 | applicationId "com.example.flutter_password_strength_example" 42 | minSdkVersion 16 43 | targetSdkVersion 28 44 | versionCode flutterVersionCode.toInteger() 45 | versionName flutterVersionName 46 | testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner" 47 | } 48 | 49 | buildTypes { 50 | release { 51 | // TODO: Add your own signing config for the release build. 52 | // Signing with the debug keys for now, so `flutter run --release` works. 53 | signingConfig signingConfigs.debug 54 | } 55 | } 56 | } 57 | 58 | flutter { 59 | source '../..' 60 | } 61 | 62 | dependencies { 63 | implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version" 64 | testImplementation 'junit:junit:4.12' 65 | androidTestImplementation 'androidx.test:runner:1.1.1' 66 | androidTestImplementation 'androidx.test.espresso:espresso-core:3.1.1' 67 | } 68 | -------------------------------------------------------------------------------- /example/ios/Runner/Base.lproj/LaunchScreen.storyboard: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 35 | 36 | 37 | 38 | -------------------------------------------------------------------------------- /example/pubspec.yaml: -------------------------------------------------------------------------------- 1 | name: flutter_password_strength_example 2 | description: A new Flutter project. 3 | 4 | # The following defines the version and build number for your application. 5 | # A version number is three numbers separated by dots, like 1.2.43 6 | # followed by an optional build number separated by a +. 7 | # Both the version and the builder number may be overridden in flutter 8 | # build by specifying --build-name and --build-number, respectively. 9 | # In Android, build-name is used as versionName while build-number used as versionCode. 10 | # Read more about Android versioning at https://developer.android.com/studio/publish/versioning 11 | # In iOS, build-name is used as CFBundleShortVersionString while build-number used as CFBundleVersion. 12 | # Read more about iOS versioning at 13 | # https://developer.apple.com/library/archive/documentation/General/Reference/InfoPlistKeyReference/Articles/CoreFoundationKeys.html 14 | version: 1.0.0+1 15 | 16 | environment: 17 | sdk: ">=2.12.0 <3.0.0" 18 | 19 | dependencies: 20 | flutter: 21 | sdk: flutter 22 | 23 | # The following adds the Cupertino Icons font to your application. 24 | # Use with the CupertinoIcons class for iOS style icons. 25 | cupertino_icons: ^0.1.2 26 | 27 | dev_dependencies: 28 | flutter_test: 29 | sdk: flutter 30 | 31 | 32 | # For information on the generic Dart part of this file, see the 33 | # following page: https://dart.dev/tools/pub/pubspec 34 | 35 | # The following section is specific to Flutter. 36 | flutter: 37 | 38 | # The following line ensures that the Material Icons font is 39 | # included with your application, so that you can use the icons in 40 | # the material Icons class. 41 | uses-material-design: true 42 | 43 | # To add assets to your application, add an assets section, like this: 44 | # assets: 45 | # - images/a_dot_burr.jpeg 46 | # - images/a_dot_ham.jpeg 47 | 48 | # An image asset can refer to one or more resolution-specific "variants", see 49 | # https://flutter.dev/assets-and-images/#resolution-aware. 50 | 51 | # For details regarding adding assets from package dependencies, see 52 | # https://flutter.dev/assets-and-images/#from-packages 53 | 54 | # To add custom fonts to your application, add a fonts section here, 55 | # in this "flutter" section. Each entry in this list should have a 56 | # "family" key with the font family name, and a "fonts" key with a 57 | # list giving the asset and other descriptors for the font. For 58 | # example: 59 | # fonts: 60 | # - family: Schyler 61 | # fonts: 62 | # - asset: fonts/Schyler-Regular.ttf 63 | # - asset: fonts/Schyler-Italic.ttf 64 | # style: italic 65 | # - family: Trajan Pro 66 | # fonts: 67 | # - asset: fonts/TrajanPro.ttf 68 | # - asset: fonts/TrajanPro_Bold.ttf 69 | # weight: 700 70 | # 71 | # For details regarding fonts from package dependencies, 72 | # see https://flutter.dev/custom-fonts/#from-packages 73 | -------------------------------------------------------------------------------- /example/ios/Runner/Assets.xcassets/AppIcon.appiconset/Contents.json: -------------------------------------------------------------------------------- 1 | { 2 | "images" : [ 3 | { 4 | "size" : "20x20", 5 | "idiom" : "iphone", 6 | "filename" : "Icon-App-20x20@2x.png", 7 | "scale" : "2x" 8 | }, 9 | { 10 | "size" : "20x20", 11 | "idiom" : "iphone", 12 | "filename" : "Icon-App-20x20@3x.png", 13 | "scale" : "3x" 14 | }, 15 | { 16 | "size" : "29x29", 17 | "idiom" : "iphone", 18 | "filename" : "Icon-App-29x29@1x.png", 19 | "scale" : "1x" 20 | }, 21 | { 22 | "size" : "29x29", 23 | "idiom" : "iphone", 24 | "filename" : "Icon-App-29x29@2x.png", 25 | "scale" : "2x" 26 | }, 27 | { 28 | "size" : "29x29", 29 | "idiom" : "iphone", 30 | "filename" : "Icon-App-29x29@3x.png", 31 | "scale" : "3x" 32 | }, 33 | { 34 | "size" : "40x40", 35 | "idiom" : "iphone", 36 | "filename" : "Icon-App-40x40@2x.png", 37 | "scale" : "2x" 38 | }, 39 | { 40 | "size" : "40x40", 41 | "idiom" : "iphone", 42 | "filename" : "Icon-App-40x40@3x.png", 43 | "scale" : "3x" 44 | }, 45 | { 46 | "size" : "60x60", 47 | "idiom" : "iphone", 48 | "filename" : "Icon-App-60x60@2x.png", 49 | "scale" : "2x" 50 | }, 51 | { 52 | "size" : "60x60", 53 | "idiom" : "iphone", 54 | "filename" : "Icon-App-60x60@3x.png", 55 | "scale" : "3x" 56 | }, 57 | { 58 | "size" : "20x20", 59 | "idiom" : "ipad", 60 | "filename" : "Icon-App-20x20@1x.png", 61 | "scale" : "1x" 62 | }, 63 | { 64 | "size" : "20x20", 65 | "idiom" : "ipad", 66 | "filename" : "Icon-App-20x20@2x.png", 67 | "scale" : "2x" 68 | }, 69 | { 70 | "size" : "29x29", 71 | "idiom" : "ipad", 72 | "filename" : "Icon-App-29x29@1x.png", 73 | "scale" : "1x" 74 | }, 75 | { 76 | "size" : "29x29", 77 | "idiom" : "ipad", 78 | "filename" : "Icon-App-29x29@2x.png", 79 | "scale" : "2x" 80 | }, 81 | { 82 | "size" : "40x40", 83 | "idiom" : "ipad", 84 | "filename" : "Icon-App-40x40@1x.png", 85 | "scale" : "1x" 86 | }, 87 | { 88 | "size" : "40x40", 89 | "idiom" : "ipad", 90 | "filename" : "Icon-App-40x40@2x.png", 91 | "scale" : "2x" 92 | }, 93 | { 94 | "size" : "76x76", 95 | "idiom" : "ipad", 96 | "filename" : "Icon-App-76x76@1x.png", 97 | "scale" : "1x" 98 | }, 99 | { 100 | "size" : "76x76", 101 | "idiom" : "ipad", 102 | "filename" : "Icon-App-76x76@2x.png", 103 | "scale" : "2x" 104 | }, 105 | { 106 | "size" : "83.5x83.5", 107 | "idiom" : "ipad", 108 | "filename" : "Icon-App-83.5x83.5@2x.png", 109 | "scale" : "2x" 110 | }, 111 | { 112 | "size" : "1024x1024", 113 | "idiom" : "ios-marketing", 114 | "filename" : "Icon-App-1024x1024@1x.png", 115 | "scale" : "1x" 116 | } 117 | ], 118 | "info" : { 119 | "version" : 1, 120 | "author" : "xcode" 121 | } 122 | } 123 | -------------------------------------------------------------------------------- /example/ios/Runner.xcodeproj/xcshareddata/xcschemes/Runner.xcscheme: -------------------------------------------------------------------------------- 1 | 2 | 5 | 8 | 9 | 15 | 21 | 22 | 23 | 24 | 25 | 30 | 31 | 32 | 33 | 39 | 40 | 41 | 42 | 43 | 44 | 54 | 56 | 62 | 63 | 64 | 65 | 66 | 67 | 73 | 75 | 81 | 82 | 83 | 84 | 86 | 87 | 90 | 91 | 92 | -------------------------------------------------------------------------------- /pubspec.lock: -------------------------------------------------------------------------------- 1 | # Generated by pub 2 | # See https://dart.dev/tools/pub/glossary#lockfile 3 | packages: 4 | async: 5 | dependency: transitive 6 | description: 7 | name: async 8 | url: "https://pub.dartlang.org" 9 | source: hosted 10 | version: "2.5.0" 11 | boolean_selector: 12 | dependency: transitive 13 | description: 14 | name: boolean_selector 15 | url: "https://pub.dartlang.org" 16 | source: hosted 17 | version: "2.1.0" 18 | characters: 19 | dependency: transitive 20 | description: 21 | name: characters 22 | url: "https://pub.dartlang.org" 23 | source: hosted 24 | version: "1.1.0" 25 | charcode: 26 | dependency: transitive 27 | description: 28 | name: charcode 29 | url: "https://pub.dartlang.org" 30 | source: hosted 31 | version: "1.2.0" 32 | clock: 33 | dependency: transitive 34 | description: 35 | name: clock 36 | url: "https://pub.dartlang.org" 37 | source: hosted 38 | version: "1.1.0" 39 | collection: 40 | dependency: transitive 41 | description: 42 | name: collection 43 | url: "https://pub.dartlang.org" 44 | source: hosted 45 | version: "1.15.0" 46 | fake_async: 47 | dependency: transitive 48 | description: 49 | name: fake_async 50 | url: "https://pub.dartlang.org" 51 | source: hosted 52 | version: "1.2.0" 53 | flutter: 54 | dependency: "direct main" 55 | description: flutter 56 | source: sdk 57 | version: "0.0.0" 58 | flutter_test: 59 | dependency: "direct dev" 60 | description: flutter 61 | source: sdk 62 | version: "0.0.0" 63 | matcher: 64 | dependency: transitive 65 | description: 66 | name: matcher 67 | url: "https://pub.dartlang.org" 68 | source: hosted 69 | version: "0.12.10" 70 | meta: 71 | dependency: transitive 72 | description: 73 | name: meta 74 | url: "https://pub.dartlang.org" 75 | source: hosted 76 | version: "1.3.0" 77 | path: 78 | dependency: transitive 79 | description: 80 | name: path 81 | url: "https://pub.dartlang.org" 82 | source: hosted 83 | version: "1.8.0" 84 | sky_engine: 85 | dependency: transitive 86 | description: flutter 87 | source: sdk 88 | version: "0.0.99" 89 | source_span: 90 | dependency: transitive 91 | description: 92 | name: source_span 93 | url: "https://pub.dartlang.org" 94 | source: hosted 95 | version: "1.8.1" 96 | stack_trace: 97 | dependency: transitive 98 | description: 99 | name: stack_trace 100 | url: "https://pub.dartlang.org" 101 | source: hosted 102 | version: "1.10.0" 103 | stream_channel: 104 | dependency: transitive 105 | description: 106 | name: stream_channel 107 | url: "https://pub.dartlang.org" 108 | source: hosted 109 | version: "2.1.0" 110 | string_scanner: 111 | dependency: transitive 112 | description: 113 | name: string_scanner 114 | url: "https://pub.dartlang.org" 115 | source: hosted 116 | version: "1.1.0" 117 | term_glyph: 118 | dependency: transitive 119 | description: 120 | name: term_glyph 121 | url: "https://pub.dartlang.org" 122 | source: hosted 123 | version: "1.2.0" 124 | test_api: 125 | dependency: transitive 126 | description: 127 | name: test_api 128 | url: "https://pub.dartlang.org" 129 | source: hosted 130 | version: "0.2.19" 131 | typed_data: 132 | dependency: transitive 133 | description: 134 | name: typed_data 135 | url: "https://pub.dartlang.org" 136 | source: hosted 137 | version: "1.3.0" 138 | vector_math: 139 | dependency: transitive 140 | description: 141 | name: vector_math 142 | url: "https://pub.dartlang.org" 143 | source: hosted 144 | version: "2.1.0" 145 | sdks: 146 | dart: ">=2.12.0 <3.0.0" 147 | -------------------------------------------------------------------------------- /example/pubspec.lock: -------------------------------------------------------------------------------- 1 | # Generated by pub 2 | # See https://dart.dev/tools/pub/glossary#lockfile 3 | packages: 4 | async: 5 | dependency: transitive 6 | description: 7 | name: async 8 | url: "https://pub.dartlang.org" 9 | source: hosted 10 | version: "2.5.0" 11 | boolean_selector: 12 | dependency: transitive 13 | description: 14 | name: boolean_selector 15 | url: "https://pub.dartlang.org" 16 | source: hosted 17 | version: "2.1.0" 18 | characters: 19 | dependency: transitive 20 | description: 21 | name: characters 22 | url: "https://pub.dartlang.org" 23 | source: hosted 24 | version: "1.1.0" 25 | charcode: 26 | dependency: transitive 27 | description: 28 | name: charcode 29 | url: "https://pub.dartlang.org" 30 | source: hosted 31 | version: "1.2.0" 32 | clock: 33 | dependency: transitive 34 | description: 35 | name: clock 36 | url: "https://pub.dartlang.org" 37 | source: hosted 38 | version: "1.1.0" 39 | collection: 40 | dependency: transitive 41 | description: 42 | name: collection 43 | url: "https://pub.dartlang.org" 44 | source: hosted 45 | version: "1.15.0" 46 | cupertino_icons: 47 | dependency: "direct main" 48 | description: 49 | name: cupertino_icons 50 | url: "https://pub.dartlang.org" 51 | source: hosted 52 | version: "0.1.3" 53 | fake_async: 54 | dependency: transitive 55 | description: 56 | name: fake_async 57 | url: "https://pub.dartlang.org" 58 | source: hosted 59 | version: "1.2.0" 60 | flutter: 61 | dependency: "direct main" 62 | description: flutter 63 | source: sdk 64 | version: "0.0.0" 65 | flutter_test: 66 | dependency: "direct dev" 67 | description: flutter 68 | source: sdk 69 | version: "0.0.0" 70 | matcher: 71 | dependency: transitive 72 | description: 73 | name: matcher 74 | url: "https://pub.dartlang.org" 75 | source: hosted 76 | version: "0.12.10" 77 | meta: 78 | dependency: transitive 79 | description: 80 | name: meta 81 | url: "https://pub.dartlang.org" 82 | source: hosted 83 | version: "1.3.0" 84 | path: 85 | dependency: transitive 86 | description: 87 | name: path 88 | url: "https://pub.dartlang.org" 89 | source: hosted 90 | version: "1.8.0" 91 | sky_engine: 92 | dependency: transitive 93 | description: flutter 94 | source: sdk 95 | version: "0.0.99" 96 | source_span: 97 | dependency: transitive 98 | description: 99 | name: source_span 100 | url: "https://pub.dartlang.org" 101 | source: hosted 102 | version: "1.8.1" 103 | stack_trace: 104 | dependency: transitive 105 | description: 106 | name: stack_trace 107 | url: "https://pub.dartlang.org" 108 | source: hosted 109 | version: "1.10.0" 110 | stream_channel: 111 | dependency: transitive 112 | description: 113 | name: stream_channel 114 | url: "https://pub.dartlang.org" 115 | source: hosted 116 | version: "2.1.0" 117 | string_scanner: 118 | dependency: transitive 119 | description: 120 | name: string_scanner 121 | url: "https://pub.dartlang.org" 122 | source: hosted 123 | version: "1.1.0" 124 | term_glyph: 125 | dependency: transitive 126 | description: 127 | name: term_glyph 128 | url: "https://pub.dartlang.org" 129 | source: hosted 130 | version: "1.2.0" 131 | test_api: 132 | dependency: transitive 133 | description: 134 | name: test_api 135 | url: "https://pub.dartlang.org" 136 | source: hosted 137 | version: "0.2.19" 138 | typed_data: 139 | dependency: transitive 140 | description: 141 | name: typed_data 142 | url: "https://pub.dartlang.org" 143 | source: hosted 144 | version: "1.3.0" 145 | vector_math: 146 | dependency: transitive 147 | description: 148 | name: vector_math 149 | url: "https://pub.dartlang.org" 150 | source: hosted 151 | version: "2.1.0" 152 | sdks: 153 | dart: ">=2.12.0 <3.0.0" 154 | -------------------------------------------------------------------------------- /lib/flutter_password_strength.dart: -------------------------------------------------------------------------------- 1 | library flutter_password_strength; 2 | 3 | import 'package:flutter/material.dart'; 4 | import 'package:flutter/widgets.dart'; 5 | 6 | import 'src/estimate_bruteforce_strength.dart'; 7 | 8 | class FlutterPasswordStrength extends StatefulWidget { 9 | final String? password; 10 | 11 | //Strength bar width 12 | final double? width; 13 | 14 | //Strength bar height 15 | final double height; 16 | 17 | //Strength bar colors are changed depending on strength 18 | final Animatable? strengthColors; 19 | 20 | //Strength bar background color 21 | final Color backgroundColor; 22 | 23 | //Strength bar radius 24 | final double radius; 25 | 26 | //Strength bar animation duration 27 | final Duration? duration; 28 | 29 | //Strength callback 30 | final void Function(double strength)? strengthCallback; 31 | 32 | const FlutterPasswordStrength( 33 | { Key? key, 34 | required this.password, 35 | this.width, 36 | this.height = 5, 37 | this.strengthColors, 38 | this.backgroundColor = Colors.grey, 39 | this.radius = 0, 40 | this.duration, 41 | this.strengthCallback}) 42 | : super(key: key); 43 | 44 | /* 45 | default strength bar colors 46 | This is approximate values 47 | 0.0 ~ 0.25 : red 48 | 0.26 ~ 0.5 : yellow 49 | 0.51 ~ 0.75 : blue 50 | 0.76 ~ 1 : green 51 | */ 52 | Animatable get _strengthColors => (strengthColors != null 53 | ? strengthColors 54 | : TweenSequence( 55 | [ 56 | TweenSequenceItem( 57 | weight: 1.0, 58 | tween: ColorTween( 59 | begin: Colors.red, 60 | end: Colors.yellow, 61 | ), 62 | ), 63 | TweenSequenceItem( 64 | weight: 1.0, 65 | tween: ColorTween( 66 | begin: Colors.yellow, 67 | end: Colors.blue, 68 | ), 69 | ), 70 | TweenSequenceItem( 71 | weight: 1.0, 72 | tween: ColorTween( 73 | begin: Colors.blue, 74 | end: Colors.green, 75 | ), 76 | ), 77 | ], 78 | )) as Animatable; 79 | 80 | //default duration is 300 milliseconds 81 | Duration? get _duration => 82 | duration != null ? duration : Duration(milliseconds: 300); 83 | 84 | @override 85 | _FlutterPasswordStrengthState createState() => 86 | _FlutterPasswordStrengthState(); 87 | } 88 | 89 | class _FlutterPasswordStrengthState extends State 90 | with SingleTickerProviderStateMixin { 91 | //Animation controller for strength bar 92 | late AnimationController _animationController; 93 | 94 | //Animation for strength bar sharp 95 | late Animation _strengthBarAnimation; 96 | 97 | //Strength bar colors 98 | late Animatable _strengthBarColors; 99 | 100 | //Strength bar color from the list of strength bar colors 101 | late Color _strengthBarColor; 102 | 103 | //Strength bar color 104 | late Color _backgroundColor; 105 | 106 | //Strength bar width 107 | double? _width; 108 | 109 | //Strength bar height 110 | late double _height; 111 | 112 | //Strength bar radius, default is 0 113 | double _radius = 0; 114 | 115 | //Strength callback 116 | void Function(double strength)? _strengthCallback; 117 | 118 | //_begin is used in _strengthBarAnimation 119 | double _begin = 0; 120 | 121 | //_end is used in _strengthBarAnimation 122 | double _end = 0; 123 | 124 | //calculated strength from password 125 | double _passwordStrength = 0; 126 | 127 | @override 128 | void initState() { 129 | super.initState(); 130 | 131 | //initialize 132 | _animationController = 133 | AnimationController(duration: widget._duration, vsync: this); 134 | _strengthBarAnimation = 135 | Tween(begin: _begin, end: _end).animate(_animationController); 136 | _strengthBarColors = widget._strengthColors; 137 | _strengthBarColor = 138 | _strengthBarColors.evaluate(AlwaysStoppedAnimation(_passwordStrength)) ?? Colors.transparent; 139 | 140 | _backgroundColor = widget.backgroundColor; 141 | 142 | _width = widget.width; 143 | _height = widget.height; 144 | _radius = widget.radius; 145 | _strengthCallback = widget.strengthCallback; 146 | 147 | //start animation 148 | _animationController.forward(); 149 | } 150 | 151 | void animate() { 152 | //calculate strength 153 | _passwordStrength = estimateBruteforceStrength(widget.password ?? ""); 154 | 155 | _begin = _end; 156 | _end = _passwordStrength * 100; 157 | 158 | _strengthBarAnimation = 159 | Tween(begin: _begin, end: _end).animate(_animationController); 160 | _strengthBarColor = 161 | _strengthBarColors.evaluate(AlwaysStoppedAnimation(_passwordStrength)) ?? Colors.transparent; 162 | 163 | _animationController.forward(from: 0.0); 164 | 165 | if(_strengthCallback != null){ 166 | _strengthCallback!(_passwordStrength); 167 | } 168 | } 169 | 170 | @override 171 | void dispose() { 172 | super.dispose(); 173 | _animationController.dispose(); 174 | } 175 | 176 | @override 177 | void didUpdateWidget(FlutterPasswordStrength oldWidget) { 178 | super.didUpdateWidget(oldWidget); 179 | 180 | if (oldWidget.password != widget.password) { 181 | animate(); 182 | } 183 | } 184 | 185 | @override 186 | Widget build(BuildContext context) { 187 | return StrengthBarContainer( 188 | barColor: _strengthBarColor, 189 | backgroundColor: _backgroundColor, 190 | width: _width, 191 | height: _height, 192 | radius: _radius, 193 | animation: _strengthBarAnimation); 194 | } 195 | } 196 | 197 | class StrengthBarContainer extends AnimatedWidget { 198 | final Color barColor; 199 | final Color backgroundColor; 200 | final double? width; 201 | final double height; 202 | final double radius; 203 | 204 | const StrengthBarContainer( 205 | {Key? key, 206 | required this.barColor, 207 | required this.backgroundColor, 208 | this.width, 209 | required this.height, 210 | required this.radius, 211 | required Animation animation}) 212 | : super(key: key, listenable: animation); 213 | 214 | Animation get _percent { 215 | return listenable as Animation; 216 | } 217 | 218 | @override 219 | Widget build(BuildContext context) { 220 | return LayoutBuilder( 221 | builder: (BuildContext context, BoxConstraints constraints) { 222 | return Container( 223 | child: CustomPaint( 224 | size: Size(width ?? constraints.maxWidth, height), 225 | painter: StrengthBarBackground( 226 | backgroundColor: backgroundColor, backgroundRadius: radius), 227 | foregroundPainter: StrengthBar( 228 | barColor: barColor, 229 | barRadius: radius, 230 | percent: _percent.value))); 231 | }); 232 | } 233 | } 234 | 235 | class StrengthBar extends CustomPainter { 236 | Color barColor; 237 | double barRadius; 238 | double percent; 239 | 240 | StrengthBar({required this.barColor, required this.barRadius, required this.percent}); 241 | 242 | @override 243 | void paint(Canvas canvas, Size size) { 244 | drawBar(canvas, size); 245 | } 246 | 247 | void drawBar(Canvas canvas, Size size) { 248 | Paint paint = Paint() 249 | ..color = barColor 250 | ..style = PaintingStyle.fill 251 | ..strokeCap = StrokeCap.round; 252 | 253 | double left = 0; 254 | double top = 0; 255 | double right = size.width / 100 * percent; 256 | double bottom = size.height; 257 | 258 | //the bar width needs to be bigger than radius width 259 | if (barRadius != 0 && right > 0 && barRadius * 2 > right) { 260 | right = barRadius * 2; 261 | } 262 | 263 | canvas.drawRRect( 264 | RRect.fromRectAndRadius( 265 | Rect.fromLTRB(left, top, right, bottom), 266 | Radius.circular(barRadius), 267 | ), 268 | paint); 269 | } 270 | 271 | @override 272 | bool shouldRepaint(StrengthBar old) { 273 | return old.percent != percent; 274 | } 275 | } 276 | 277 | class StrengthBarBackground extends CustomPainter { 278 | Color backgroundColor; 279 | double? backgroundRadius; 280 | 281 | StrengthBarBackground({required this.backgroundColor, this.backgroundRadius}); 282 | 283 | @override 284 | void paint(Canvas canvas, Size size) { 285 | drawBarBackground(canvas, size); 286 | } 287 | 288 | void drawBarBackground(Canvas canvas, Size size) { 289 | Paint paint = Paint() 290 | ..color = backgroundColor 291 | ..style = PaintingStyle.fill 292 | ..strokeCap = StrokeCap.round; 293 | 294 | double left = 0; 295 | double top = 0; 296 | double right = size.width; 297 | double bottom = size.height; 298 | 299 | canvas.drawRRect( 300 | RRect.fromRectAndRadius( 301 | Rect.fromLTRB(left, top, right, bottom), 302 | Radius.circular(backgroundRadius ?? 0), 303 | ), 304 | paint); 305 | } 306 | 307 | @override 308 | bool shouldRepaint(StrengthBarBackground old) { 309 | return true; 310 | } 311 | } -------------------------------------------------------------------------------- /example/lib/flutter_password_strength/flutter_password_strength.dart: -------------------------------------------------------------------------------- 1 | library flutter_password_strength; 2 | 3 | import 'package:flutter/material.dart'; 4 | import 'package:flutter/widgets.dart'; 5 | 6 | import 'src/estimate_bruteforce_strength.dart'; 7 | 8 | class FlutterPasswordStrength extends StatefulWidget { 9 | final String? password; 10 | 11 | //Strength bar width 12 | final double? width; 13 | 14 | //Strength bar height 15 | final double height; 16 | 17 | //Strength bar colors are changed depending on strength 18 | final Animatable? strengthColors; 19 | 20 | //Strength bar background color 21 | final Color backgroundColor; 22 | 23 | //Strength bar radius 24 | final double radius; 25 | 26 | //Strength bar animation duration 27 | final Duration? duration; 28 | 29 | //Strength callback 30 | final void Function(double strength)? strengthCallback; 31 | 32 | const FlutterPasswordStrength( 33 | { Key? key, 34 | required this.password, 35 | this.width, 36 | this.height = 5, 37 | this.strengthColors, 38 | this.backgroundColor = Colors.grey, 39 | this.radius = 0, 40 | this.duration, 41 | this.strengthCallback}) 42 | : super(key: key); 43 | 44 | /* 45 | default strength bar colors 46 | This is approximate values 47 | 0.0 ~ 0.25 : red 48 | 0.26 ~ 0.5 : yellow 49 | 0.51 ~ 0.75 : blue 50 | 0.76 ~ 1 : green 51 | */ 52 | Animatable get _strengthColors => (strengthColors != null 53 | ? strengthColors 54 | : TweenSequence( 55 | [ 56 | TweenSequenceItem( 57 | weight: 1.0, 58 | tween: ColorTween( 59 | begin: Colors.red, 60 | end: Colors.yellow, 61 | ), 62 | ), 63 | TweenSequenceItem( 64 | weight: 1.0, 65 | tween: ColorTween( 66 | begin: Colors.yellow, 67 | end: Colors.blue, 68 | ), 69 | ), 70 | TweenSequenceItem( 71 | weight: 1.0, 72 | tween: ColorTween( 73 | begin: Colors.blue, 74 | end: Colors.green, 75 | ), 76 | ), 77 | ], 78 | )) as Animatable; 79 | 80 | //default duration is 300 milliseconds 81 | Duration? get _duration => 82 | duration != null ? duration : Duration(milliseconds: 300); 83 | 84 | @override 85 | _FlutterPasswordStrengthState createState() => 86 | _FlutterPasswordStrengthState(); 87 | } 88 | 89 | class _FlutterPasswordStrengthState extends State 90 | with SingleTickerProviderStateMixin { 91 | //Animation controller for strength bar 92 | late AnimationController _animationController; 93 | 94 | //Animation for strength bar sharp 95 | late Animation _strengthBarAnimation; 96 | 97 | //Strength bar colors 98 | late Animatable _strengthBarColors; 99 | 100 | //Strength bar color from the list of strength bar colors 101 | late Color _strengthBarColor; 102 | 103 | //Strength bar color 104 | late Color _backgroundColor; 105 | 106 | //Strength bar width 107 | double? _width; 108 | 109 | //Strength bar height 110 | late double _height; 111 | 112 | //Strength bar radius, default is 0 113 | double _radius = 0; 114 | 115 | //Strength callback 116 | void Function(double strength)? _strengthCallback; 117 | 118 | //_begin is used in _strengthBarAnimation 119 | double _begin = 0; 120 | 121 | //_end is used in _strengthBarAnimation 122 | double _end = 0; 123 | 124 | //calculated strength from password 125 | double _passwordStrength = 0; 126 | 127 | @override 128 | void initState() { 129 | super.initState(); 130 | 131 | //initialize 132 | _animationController = 133 | AnimationController(duration: widget._duration, vsync: this); 134 | _strengthBarAnimation = 135 | Tween(begin: _begin, end: _end).animate(_animationController); 136 | _strengthBarColors = widget._strengthColors; 137 | _strengthBarColor = 138 | _strengthBarColors.evaluate(AlwaysStoppedAnimation(_passwordStrength)) ?? Colors.transparent; 139 | 140 | _backgroundColor = widget.backgroundColor; 141 | 142 | _width = widget.width; 143 | _height = widget.height; 144 | _radius = widget.radius; 145 | _strengthCallback = widget.strengthCallback; 146 | 147 | //start animation 148 | _animationController.forward(); 149 | } 150 | 151 | void animate() { 152 | //calculate strength 153 | _passwordStrength = estimateBruteforceStrength(widget.password ?? ""); 154 | 155 | _begin = _end; 156 | _end = _passwordStrength * 100; 157 | 158 | _strengthBarAnimation = 159 | Tween(begin: _begin, end: _end).animate(_animationController); 160 | _strengthBarColor = 161 | _strengthBarColors.evaluate(AlwaysStoppedAnimation(_passwordStrength)) ?? Colors.transparent; 162 | 163 | _animationController.forward(from: 0.0); 164 | 165 | if(_strengthCallback != null){ 166 | _strengthCallback!(_passwordStrength); 167 | } 168 | } 169 | 170 | @override 171 | void dispose() { 172 | super.dispose(); 173 | _animationController.dispose(); 174 | } 175 | 176 | @override 177 | void didUpdateWidget(FlutterPasswordStrength oldWidget) { 178 | super.didUpdateWidget(oldWidget); 179 | 180 | if (oldWidget.password != widget.password) { 181 | animate(); 182 | } 183 | } 184 | 185 | @override 186 | Widget build(BuildContext context) { 187 | return StrengthBarContainer( 188 | barColor: _strengthBarColor, 189 | backgroundColor: _backgroundColor, 190 | width: _width, 191 | height: _height, 192 | radius: _radius, 193 | animation: _strengthBarAnimation); 194 | } 195 | } 196 | 197 | class StrengthBarContainer extends AnimatedWidget { 198 | final Color barColor; 199 | final Color backgroundColor; 200 | final double? width; 201 | final double height; 202 | final double radius; 203 | 204 | const StrengthBarContainer( 205 | {Key? key, 206 | required this.barColor, 207 | required this.backgroundColor, 208 | this.width, 209 | required this.height, 210 | required this.radius, 211 | required Animation animation}) 212 | : super(key: key, listenable: animation); 213 | 214 | Animation get _percent { 215 | return listenable as Animation; 216 | } 217 | 218 | @override 219 | Widget build(BuildContext context) { 220 | return LayoutBuilder( 221 | builder: (BuildContext context, BoxConstraints constraints) { 222 | return Container( 223 | child: CustomPaint( 224 | size: Size(width ?? constraints.maxWidth, height), 225 | painter: StrengthBarBackground( 226 | backgroundColor: backgroundColor, backgroundRadius: radius), 227 | foregroundPainter: StrengthBar( 228 | barColor: barColor, 229 | barRadius: radius, 230 | percent: _percent.value))); 231 | }); 232 | } 233 | } 234 | 235 | class StrengthBar extends CustomPainter { 236 | Color barColor; 237 | double barRadius; 238 | double percent; 239 | 240 | StrengthBar({required this.barColor, required this.barRadius, required this.percent}); 241 | 242 | @override 243 | void paint(Canvas canvas, Size size) { 244 | drawBar(canvas, size); 245 | } 246 | 247 | void drawBar(Canvas canvas, Size size) { 248 | Paint paint = Paint() 249 | ..color = barColor 250 | ..style = PaintingStyle.fill 251 | ..strokeCap = StrokeCap.round; 252 | 253 | double left = 0; 254 | double top = 0; 255 | double right = size.width / 100 * percent; 256 | double bottom = size.height; 257 | 258 | //the bar width needs to be bigger than radius width 259 | if (barRadius != 0 && right > 0 && barRadius * 2 > right) { 260 | right = barRadius * 2; 261 | } 262 | 263 | canvas.drawRRect( 264 | RRect.fromRectAndRadius( 265 | Rect.fromLTRB(left, top, right, bottom), 266 | Radius.circular(barRadius), 267 | ), 268 | paint); 269 | } 270 | 271 | @override 272 | bool shouldRepaint(StrengthBar old) { 273 | return old.percent != percent; 274 | } 275 | } 276 | 277 | class StrengthBarBackground extends CustomPainter { 278 | Color backgroundColor; 279 | double? backgroundRadius; 280 | 281 | StrengthBarBackground({required this.backgroundColor, this.backgroundRadius}); 282 | 283 | @override 284 | void paint(Canvas canvas, Size size) { 285 | drawBarBackground(canvas, size); 286 | } 287 | 288 | void drawBarBackground(Canvas canvas, Size size) { 289 | Paint paint = Paint() 290 | ..color = backgroundColor 291 | ..style = PaintingStyle.fill 292 | ..strokeCap = StrokeCap.round; 293 | 294 | double left = 0; 295 | double top = 0; 296 | double right = size.width; 297 | double bottom = size.height; 298 | 299 | canvas.drawRRect( 300 | RRect.fromRectAndRadius( 301 | Rect.fromLTRB(left, top, right, bottom), 302 | Radius.circular(backgroundRadius ?? 0), 303 | ), 304 | paint); 305 | } 306 | 307 | @override 308 | bool shouldRepaint(StrengthBarBackground old) { 309 | return true; 310 | } 311 | } -------------------------------------------------------------------------------- /example/ios/Runner.xcodeproj/project.pbxproj: -------------------------------------------------------------------------------- 1 | // !$*UTF8*$! 2 | { 3 | archiveVersion = 1; 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