flutter_backdrop 1.0.3

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  • Changelog
  • Example
  • Installing
  • 86

flutter_backdrop #

This package is used for implementing Backdrop widget in Flutter easily.

You can add properties like-

  • frontLayer
  • backLayer
  • frontHeader
  • borderRadius
  • shape
  • frontHeaderHeight
  • titleVisibleOnPanelClosed
  • frontPanelPadding
  • panelVisibleInitially
  • toggleFrontLayer
  • appBarLeadingMenuIcon,
  • appBarAnimatedLeadingMenuIcon,
  • appBarAutomaticallyImplyLeading = true,
  • appBarTitle,
  • appBarActions,
  • appBarBackgroundColor,
  • appBarIconTheme,
  • appBarTextTheme,
  • appBarCenterTitle,
  • appBarTitleSpacing

to manipulate the backdrop easily.

Each property has been defined in package.

Refer to the example to create something like this:

Result of example

Or modify the borderRadius property to get this:

Circular Border

Or modify titleVisibleOnPanelClosed property to get this:

Title visible or Title not visible

Getting Started #

This project is a starting point for a Dart package, a library module containing code that can be shared easily across multiple Flutter or Dart projects.

For help getting started with Flutter, view our online documentation, which offers tutorials, samples, guidance on mobile development, and a full API reference.

[1.0.2] - 08/02/2019

  • Modified to remove a redundant print statement and modified example.

[1.0.1] - 25/01/2019

  • Example has been added for reference.

[1.0.0] - 25/01/2019

  • More properties and stable release.

[0.0.1] - 24/01/2019

  • This is a package which allows you to implement Backdrop Widget easily

example/example.dart

import 'package:flutter/material.dart';
import 'package:flutter_backdrop/flutter_backdrop.dart';
import 'package:scoped_model/scoped_model.dart';

main() => runApp(MyApp());

bool _toggleFrontLayer = false;

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      debugShowCheckedModeBanner: false,
      title: 'Backdrop',
      theme: ThemeData(
        primarySwatch: Colors.orange,
      ),
      home: HomePage(),
    );
  }
}

class HomePage extends StatefulWidget {
  @override
  _HomePageState createState() => _HomePageState();
}

/// Implementation of Backdrop Widget starts here.

class _HomePageState extends State<HomePage> {
  @override
  Widget build(BuildContext context) {
    return ScopedModel(
      model: FrontPanelModel(FrontPanels.panelOne),
      child: ScopedModelDescendant<FrontPanelModel>(
        builder: (context, _, model) => Backdrop(
          appBarAnimatedLeadingMenuIcon: AnimatedIcons.close_menu,
          appBarTitle: Text('Backdrop'),
          backLayer: BackPanel(),
          toggleFrontLayer: _toggleFrontLayer,
          frontLayer: model.activePanel,
          frontHeader: model.panelTitle(context),
          frontHeaderHeight: 35.0,
          titleVisibleOnPanelClosed: true,
          shape: BeveledRectangleBorder(
              borderRadius: BorderRadius.only(
                topLeft: Radius.circular(35.0),
              )),
        ),
      ),
    );
  }
}

/// Creation of Model Class to be used for changing frontLayer
/// as well as on clicking of any option on backLayer

enum FrontPanels { panelOne, panelTwo }

class FrontPanelModel extends Model {
  FrontPanels _activePanel;

  FrontPanelModel(this._activePanel);

  FrontPanels get activePanelType => _activePanel;

  Widget panelTitle(BuildContext context) {
    return Container(
      child: Center(
        child: _activePanel == FrontPanels.panelOne
            ? Text('Panel ONE')
            : Text('Panel TWO'),
      ),
    );
  }

  Widget get activePanel =>
      _activePanel == FrontPanels.panelOne ? PanelOne() : PanelTwo();

  void activate(FrontPanels panel) {
    _activePanel = panel;
    notifyListeners();
  }
}

/// Creation of front layers, both [PanelOne] and [PanelTwo] as well as
/// back layer, [BackPanel]

class PanelOne extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Container(
      child: Center(
        child: Text(
          'Panel ONE',
          style: TextStyle(fontSize: 42.0),
        ),
      ),
    );
  }
}

class PanelTwo extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Container(
      child: Center(
        child: Text(
          'Panel TWO',
          style: TextStyle(fontSize: 42.0),
        ),
      ),
    );
  }
}

class BackPanel extends StatefulWidget {
  @override
  _BackPanelState createState() => _BackPanelState();
}

class _BackPanelState extends State<BackPanel> {
  @override
  Widget build(BuildContext context) {
    return Container(
      color: Theme.of(context).primaryColor,
      child: Container(
        margin: EdgeInsets.only(top: 16.0),
        child: ListView(
          itemExtent: 70.0,
          children: <Widget>[
            ScopedModelDescendant<FrontPanelModel>(
              rebuildOnChange: false,
              builder: (context, _, model) {
                return FlatButton(
                  child: Text('First Panel', style: TextStyle(color: Colors.white, fontSize: 20.0),),
                  onPressed: () {
                    model.activate(FrontPanels.panelOne);
                    _toggleFrontLayer = true;
                  },
                );
              },
            ),

            ScopedModelDescendant<FrontPanelModel>(
              rebuildOnChange: false,
              builder: (context, _, model) {
                return FlatButton(
                  child: Text('Second Panel', style: TextStyle(color: Colors.white, fontSize: 20.0),),
                  onPressed: () {
                    model.activate(FrontPanels.panelTwo);
                    _toggleFrontLayer = true;
                  },
                );
              },
            ),

          ],
        ),
      ),
    );
  }
}

Use this package as a library

1. Depend on it

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


dependencies:
  flutter_backdrop: ^1.0.3

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:flutter_backdrop/flutter_backdrop.dart';
  
Popularity:
Describes how popular the package is relative to other packages. [more]
73
Health:
Code health derived from static analysis. [more]
100
Maintenance:
Reflects how tidy and up-to-date the package is. [more]
100
Overall:
Weighted score of the above. [more]
86
Learn more about scoring.

We analyzed this package on Oct 18, 2019, and provided a score, details, and suggestions below. Analysis was completed with status completed using:

  • Dart: 2.5.1
  • pana: 0.12.21
  • Flutter: 1.9.1+hotfix.4

Platforms

Detected platforms: Flutter

References Flutter, and has no conflicting libraries.

Health suggestions

Format lib/backdrop_panel.dart.

Run flutter format to format lib/backdrop_panel.dart.

Format lib/flutter_backdrop.dart.

Run flutter format to format lib/flutter_backdrop.dart.

Dependencies

Package Constraint Resolved Available
Direct dependencies
Dart SDK >=2.0.0-dev.68.0 <3.0.0
flutter 0.0.0
scoped_model ^1.0.1 1.0.1
Transitive dependencies
collection 1.14.11 1.14.12
meta 1.1.7
sky_engine 0.0.99
typed_data 1.1.6
vector_math 2.0.8
Dev dependencies
flutter_test