Segmented Button Slide

Segmented Button Slide takes inspiration from the iOS segmented button, adapting it to the Material interface.

How to use it

Install it by running the following command.

flutter pub add segmented_button_slide

Full example

By default it takes as much width as it can, so it's a good idea to wrap it inside a widget with a defined width.

int selectedOption = 0;

...

SegmentedButtonSlide(
  selectedEntry: selectedOption,
  onChange: (selected) => setState(() => selectedOption = selected),
  entries: const [
    SegmentedButtonSlideEntry(
      icon: Icons.home_rounded,
      label: "Home",
    ),
    SegmentedButtonSlideEntry(
      icon: Icons.list_rounded,
      label: "List",
    ),
    SegmentedButtonSlideEntry(
      icon: Icons.settings_rounded,
      label: "Settings",
    ),
  ],
  colors: SegmentedButtonSlideColors(
    barColor: Theme.of(context).colorScheme.primaryContainer.withOpacity(0.5),
    backgroundSelectedColor: Theme.of(context).colorScheme.primaryContainer,
  ),
  slideShadow: [
    BoxShadow(
      color: Colors.blue.withOpacity(1),
      blurRadius: 5,
      spreadRadius: 1,
    )
  ],
  margin: const EdgeInsets.all(16),
  height: 70,
  padding: const EdgeInsets.all(16),
  borderRadius: BorderRadius.circular(8),
  selectedTextStyle: const TextStyle(
    fontWeight: FontWeight.w700,
    color: Colors.green,
  ),
  unselectedTextStyle: const TextStyle(
    fontWeight: FontWeight.w400,
    color: Colors.red,
  ),
  hoverTextStyle: const TextStyle(
    color: Colors.orange,
  ),
),

Detailed explanation

• REQUIRED entries accepts a list of SegmentedButtonSlideEntry. Each SegmentedButtonSlideEntry is formed by an icon and a label. You must declare at least one of the two.
• REQUIRED selectedEntry accepts an int. Defines the item that's currently selected.
• REQUIRED onChange returns the selected value when the user changes the selection.
• REQUIRED colors accepts an instance of SegmentedButtonSlideColors. All of it's attributes are mandatory.
  • barColor defines the background color of the full bar.
  • backgroundSelectedColor defines the background color of the item that's currently selected.
• slideShadow defines the boxShadow of the slider (item that's currently selected).
• barShadow defines the boxShadow of the full bar (the background).
• margin creates a margin around the whole widget.
• height defines the height of the widget.
• fontSize sets the fontSize of the text. It doesn't affect to the icon.
• iconSize sets the size of the icon. It doesn't affect to the text.
• textOverflow defines how the text (only) should overflow.
• animationDuration defines the duration of all the animations of the widget. By default it's set to 250 milliseconds.
• curve defines the curve of all the animations of the widget. By default it's set to ease.
• padding defines the distance between the selectable items and the outer container.
• borderRadius defines the border radius for the outer container and for the individual items.
• selectedTextStyle accepts a TextStyle object that defines the style for the icon and the text when the option is selected.
• unselectedTextStyle accepts a TextStyle object that defines the style for the icon and the text when the option is not selected.
• hoverTextStyle accepts a TextStyle object that defines the style for the icon and the text when the option is hovered.

Migration from v1 to v2

Segmented button slide v2 includes some breaking changes.

• foregroundSelectedColor, foregroundUnselectedColor and hoverColor have been removed.
• Now you can define that three colors with the selectedTextStyle, unselectedTextStyle and hoverTextStyle attributes.