dot_matrix_animated_counter

Live demo

Animated dot-matrix counters for Flutter with:

• controller-driven updates
• ThemeExtension-based styling
• fadeScale, slide, and flip transitions
• negative number support
• comma/grouping formatting

Installation

dependencies:
  dot_matrix_animated_counter: ^0.2.0

Quick start

final controller = DotMatrixCounterController(initialValue: 1234);

MaterialApp(
  theme: DotMatrixCounterTheme.apply(
    ThemeData.dark(),
    const DotMatrixCounterThemeData(
      glowColor: Colors.cyanAccent,
      animationStyle: DotMatrixAnimationStyle.slide,
    ),
  ),
  home: Scaffold(
    body: Center(
      child: DotMatrixAnimatedCounter(
        controller: controller,
        digitCount: 7,
        padWithZeros: true,
        useGrouping: true,
      ),
    ),
  ),
)

Theming with ThemeExtension

final appTheme = DotMatrixCounterTheme.apply(
  ThemeData.dark(),
  const DotMatrixCounterThemeData(
    dotSize: 10,
    dotSpacing: 3,
    digitSpacing: 10,
    glowColor: Colors.orangeAccent,
    onColor: Colors.white,
    offColor: Color(0xFF221B18),
    animationStyle: DotMatrixAnimationStyle.flip,
  ),
);

You can also apply a local override:

DotMatrixCounterTheme(
  data: const DotMatrixCounterThemeData(
    glowColor: Colors.greenAccent,
  ),
  child: const DotMatrixAnimatedCounter(value: 42),
)

Main API

DotMatrixAnimatedCounter(
  controller: controller,
  digitCount: 7,
  padWithZeros: true,
  useGrouping: true,
  theme: const DotMatrixCounterThemeData(
    animationStyle: DotMatrixAnimationStyle.fadeScale,
  ),
)

Parameters

• value or controller: source of the integer value
• digitCount: minimum numeric digits before sign/grouping are added
• padWithZeros: left-pad digits with 0
• useGrouping: add comma separators
• groupingSeparator: override the grouping character
• theme: optional local theme override

Controller

controller.increment();
controller.decrement();
controller.setValue(-123456);
controller.reset();

Example app

The bundled example demonstrates:

• theme preset selection
• controller-based updates
• negative and comma-formatted values
• each animation style side-by-side

Libraries

dot_matrix_animated_counter