WidgetPointer constructor

const WidgetPointer({
  1. Key? key,
  2. double value = 0,
  3. bool enableDragging = false,
  4. ValueChanged<double>? onValueChanged,
  5. ValueChanged<double>? onValueChangeStart,
  6. ValueChanged<double>? onValueChangeEnd,
  7. ValueChanged<ValueChangingArgs>? onValueChanging,
  8. AnimationType animationType = AnimationType.ease,
  9. bool enableAnimation = false,
  10. double animationDuration = 1000,
  11. GaugeSizeUnit offsetUnit = GaugeSizeUnit.logicalPixel,
  12. double offset = 0,
  13. required Widget child,
})

Create a widget pointer with the default or required properties.

The arguments child, value, offset, must not be null and animationDuration must be non-negative.

Implementation

const WidgetPointer(
    {Key? key,
    this.value = 0,
    this.enableDragging = false,
    this.onValueChanged,
    this.onValueChangeStart,
    this.onValueChangeEnd,
    this.onValueChanging,
    this.animationType = AnimationType.ease,
    this.enableAnimation = false,
    this.animationDuration = 1000,
    this.offsetUnit = GaugeSizeUnit.logicalPixel,
    this.offset = 0,
    required this.child})
    : assert(animationDuration > 0,
          'Animation duration must be a non-negative value.'),
      super(key: key, child: child);