CNav

A custom navigation bar a.k.a CNav with bubble click effect.

Overview

This project is inspired by this post from Dribbble and The Boring Flutter Development Show, Ep. 35

This package gives you a cute bubble effect when you click on the navigation bar.

Dribbble:

Implemented:

Gallery

How to install

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

dependencies:
  cnav: <latest version>

Documentation

CNavItem(
  {
    required this.icon,
    Widget selectedIcon,
    this.title,
    Text selectedTitle,
    this.badgeCount = 0,
    this.showBadge = false,
  })
    : selectedIcon = selectedIcon ?? icon,
      selectedTitle = selectedTitle ?? title;

  ///
  /// The icon of the item
  /// Typically the icon is an [Icon].
  ///

  final Widget icon;      

You can customize these attributes in the navigation bar.

Attributes	Type	Description	Default
scaleFactor	double	scale factor for the icon scale animation.	0.2
elevation	double	The z-coordinate of this CNav	8.0
items	List	item data in CNav	required
selectedColor	Color	Color when CNavItem is selected	blueAccent
unSelectedColor	Color	Color when CNavItem is not selected.	grey600
onTap	Function(int)	callback function when item tapped	null
currentIndex	int	current index of navigation bar.	0
iconSize	double	size of icon. also represent the max radius of bubble effect animation.	24.0
backgroundColor	Color	Background color of CNav	Colors.white
strokeColor	Color	stroke color	blueAccent
bubbleCurve	Curve	animation curve of bubble effect	linear
scaleCurve	Curve	animation curve of scale effect	linear
borderRadius	Radius	border radius of navigation bar	Radius.zero
isFloating	bool	control if CNav is floating	false
blurEffect	bool	control if CNav show blur effect	false
opacity	double	control CNav blur effect opacity when blurEffect is true	0.8
margin	EdgeInsetsGeometry	Adds margin	EdgeInsets.zero
padding	EdgeInsetsGeometry	Adds padding	EdgeInsets.zero

Attention: If you set isFloating to true, I would recommend you to set extendBody to true in Scaffold for a better performance.

And for customize icon in the navigation bar, just put the icons you want in the CNavItem like this.

CNav(
        ...
        items: [
          CNavItem(
          icon: Icon(Icons.home),
          title: Text("hello"),
        ),
        CNavItem(
          icon: Icon(Icons.shopping_cart),
        ),
        CNavItem(
          icon: Icon(Icons.lightbulb_outline),
        ),
        CNavItem(
          icon: Icon(Icons.search),
        ),
        CNavItem(
          icon: Icon(Icons.account_circle),
        ),
        ],
        ...
      )

If you want add notification badge, just use like this

CNav(
        ...
        items: [
        CNavItem(
          icon: Icon(Icons.home),
          badgeCount: _badgeCounts[0],
          showBadge: _badgeShows[0],
        ),
        CNavItem(
          icon: Icon(Icons.shopping_bag),
          badgeCount: _badgeCounts[1],
          showBadge: _badgeShows[1],
        ),
        CNavItem(
          icon: Icon(Icons.lightbulb_outline),
          badgeCount: _badgeCounts[2],
          showBadge: _badgeShows[2],
        ),
        CNavItem(
          icon: Icon(Icons.search),
          badgeCount: _badgeCounts[3],
          showBadge: _badgeShows[3],
        ),
        CNavItem(
          icon: Icon(Icons.account_circle),
          badgeCount: _badgeCounts[4],
          showBadge: _badgeShows[4],
        ),
      ],
        ...
      )

To clear a badge, set showBadge to false

If you want add title under icon, just use like this

CNav(
      iconSize: 30.0,
      selectedColor: Color(0xff040307),
      strokeColor: Color(0x30040307),
      unSelectedColor: Color(0xffacacac),
      backgroundColor: Colors.white,
      items: [
        CNavItem(
          icon: Icon(Icons.home),
          title: Text("Home"),
        ),
        CNavItem(
          icon: Icon(Icons.shopping_cart),
          title: Text("Cart"),
        ),
        CNavItem(
          icon: Icon(Icons.lightbulb_outline),
          title: Text("Explore"),
        ),
        CNavItem(
          icon: Icon(Icons.search),
          title: Text("Search"),
        ),
        CNavItem(
          icon: Icon(Icons.account_circle),
          title: Text("Me"),
        ),
      ],
      currentIndex: _currentIndex,
      onTap: (index) {
        setState(() {
          _currentIndex = index;
        });
      },
    );

If you want use Svg, just use like this

CNav(
      iconSize: 30.0,
      margin: const EdgeInsets.all(20),
      borderRadius: const Radius.circular(10),
      strokeColor: const Color(0x300c18fb),
      backgroundColor: Colors.white,
      items: [
        CNavItem(
          title: const Text('Home'),
          icon: SvgPicture.asset(
            "assets/icons/svg/outline/home.svg",
            color: Colors.amber,
          ),
          selectedIcon: SvgPicture.asset(
            "assets/icons/svg/solid/home.svg",
            color: Colors.pinkAccent,
          ),
        ),
        CNavItem(
          title: const Text('Shopping'),
          icon: SvgPicture.asset(
            "assets/icons/svg/outline/shopping-bag.svg",
            color: Colors.amber,
          ),
          selectedIcon: SvgPicture.asset(
            "assets/icons/svg/solid/shopping-bag.svg",
            color: Colors.pinkAccent,
          ),
        ),
        CNavItem(
          title: const Text('Cloud'),
          icon: SvgPicture.asset(
            "assets/icons/svg/outline/cloud.svg",
            color: Colors.amber,
          ),
          selectedIcon: SvgPicture.asset(
            "assets/icons/svg/solid/cloud.svg",
            color: Colors.pinkAccent,
          ),
        ),
        CNavItem(
          title: const Text('Search'),
          icon: SvgPicture.asset(
            "assets/icons/svg/outline/magnifying-glass.svg",
            color: Colors.amber,
          ),
          selectedIcon: SvgPicture.asset(
            "assets/icons/svg/solid/magnifying-glass.svg",
            color: Colors.pinkAccent,
          ),
        ),
        CNavItem(
          title: const Text('Profile'),
          icon: SvgPicture.asset(
            "assets/icons/svg/outline/user.svg",
            color: Colors.amber,
          ),
          selectedIcon: SvgPicture.asset(
            "assets/icons/svg/solid/user.svg",
            color: Colors.pinkAccent,
          ),
        ),
      ],
      currentIndex: _currentIndex,
      onTap: (index) {
        setState(() {
          _currentIndex = index;
        });
      },
    );

Example

Check example app for more details.

Contribute

Issues and pull requests are welcomed!!

Future Plans

• x Code format.
• x Make it more like native navigation bar in Flutter.
• x Better documentation.
• Optimizing Margin and Padding Implementation!
• More customizations!! And more...