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A powerful official extension library of Tab/TabBar/TabView, which support to scroll ancestor or child Tabs when current is overscroll, and set scroll direction and cache extent.

extended_tabs #

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A powerful official extension library of Tab/TabBar/TabView, which support to scroll ancestor or child Tabs when current is overscroll, and set scroll direction and cache extent.

Web demo for ExtendedTabs

Usage #

dependencies:
  flutter:
    sdk: flutter
  extended_tabs: any

CarouselIndicator #

Show tab indicator as Carousel style

   CarouselIndicator(
     controller: _controller,
     selectedColor: Colors.white,
     unselectedColor: Colors.grey,
     strokeCap: StrokeCap.round,
     indicatorPadding: const EdgeInsets.all(5),
   ),

ColorTabIndicator #

Show tab indicator with color fill

    TabBar(
      indicator: ColorTabIndicator(Colors.blue),
      labelColor: Colors.black,
      tabs: [
        Tab(text: "Tab0"),
        Tab(text: "Tab1"),
      ],
      controller: tabController,
    )
  /// if link is true and current tabbarview over scroll,
  /// it will check and scroll ancestor or child tabbarView.
  /// default is true
  final bool link;
  
  ExtendedTabBarView(
    children: <Widget>[
      List("Tab000"),
      List("Tab001"),
      List("Tab002"),
      List("Tab003"),
    ],
    controller: tabController2,
    link: true,
  )

ScrollDirection #

  /// The axis along which the tab bar and tab view scrolls.
  ///
  /// Defaults to [Axis.horizontal].
  final Axis scrollDirection;

  Row(
    children: <Widget>[
      ExtendedTabBar(
        indicator: const ColorTabIndicator(Colors.blue),
        labelColor: Colors.black,
        scrollDirection: Axis.vertical,
        tabs: const <ExtendedTab>[
          ExtendedTab(
            text: 'Tab0',
            scrollDirection: Axis.vertical,
          ),
          ExtendedTab(
            text: 'Tab1',
            scrollDirection: Axis.vertical,
          ),
        ],
        controller: tabController,
      ),
      Expanded(
        child: ExtendedTabBarView(
          children: <Widget>[
            const ListWidget(
              'Tab1',
              scrollDirection: Axis.horizontal,
            ),
            const ListWidget(
              'Tab1',
              scrollDirection: Axis.horizontal,
            ),
          ],
          controller: tabController,
          scrollDirection: Axis.vertical,
        ),
      )
    ],
      )

CacheExtent #

  /// cache page count
  /// default is 0.
  /// if cacheExtent is 1, it has two pages in cache
  final int cacheExtent;
  
  ExtendedTabBarView(
    children: <Widget>[
      List("Tab000"),
      List("Tab001"),
      List("Tab002"),
      List("Tab003"),
    ],
    controller: tabController2,
    link: true,
    cacheExtent: 1,
  )  

ShouldIgnorePointerWhenScrolling #

  /// Whether the contents of the widget should ignore [PointerEvent] inputs.
  ///
  /// Setting this value to true prevents the use from interacting with the
  /// contents of the widget with pointer events. The widget itself is still
  /// interactive.
  ///
  /// For example, if the scroll position is being driven by an animation, it
  /// might be appropriate to set this value to ignore pointer events to
  /// prevent the user from accidentally interacting with the contents of the
  /// widget as it animates. The user will still be able to touch the widget,
  /// potentially stopping the animation.
  ///
  ///
  /// if true, child can't accept event before [ExtendedPageView],[ExtendedScrollable] stop scroll.
  ///
  ///
  /// if false, child can accept event before [ExtendedPageView],[ExtendedScrollable] stop scroll.
  /// notice: we don't know there are any issues if we don't ignore [PointerEvent] inputs when it's scrolling.
  ///
  ///
  /// Two way to solve issue that child can't hittest before [PageView] stop scroll.
  /// 1. set [shouldIgnorePointerWhenScrolling] false
  /// 2. use LessSpringClampingScrollPhysics to make animation quickly
  ///
  /// default is true.
  final bool shouldIgnorePointerWhenScrolling;
  
  ExtendedTabBarView(
    children: <Widget>[
      List("Tab000"),
      List("Tab001"),
      List("Tab002"),
      List("Tab003"),
    ],
    controller: tabController2,
    shouldIgnorePointerWhenScrolling: false,
    cacheExtent: 1,
  )  
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Publisher

verified publisherfluttercandies.com

A powerful official extension library of Tab/TabBar/TabView, which support to scroll ancestor or child Tabs when current is overscroll, and set scroll direction and cache extent.

Repository (GitHub)
View/report issues

Documentation

API reference

License

MIT (LICENSE)

Dependencies

flutter, sync_scroll_library

More

Packages that depend on extended_tabs