buildWidget method

@override Widget buildWidget(double diffPosition)

Implementation

@override
Widget buildWidget(double diffPosition) {
  double iconOnlyOpacity = 1.0;
  double iconTextOpacity = 0;

  if (diffPosition < 1) {
    iconOnlyOpacity = diffPosition;
    iconTextOpacity = 1 - diffPosition;
  } else {
    iconOnlyOpacity = 1.0;
    iconTextOpacity = 0;
  }

  return Container(
      child: Stack(
    fit: StackFit.expand,
    children: [
      Opacity(
        opacity: iconTextOpacity,
        child: Container(
          padding: EdgeInsets.all(10),
          decoration: BoxDecoration(
              boxShadow: [
                BoxShadow(
                    color: Colors.black26,
                    offset: Offset(0, 4),
                    blurRadius: 6)
              ],
              color: selectedBgColor,
              borderRadius: BorderRadius.all(Radius.circular(20))),
          child: Column(
            children: [
              Expanded(
                child: FittedBox(
                  fit: BoxFit.fill,
                  child: Icon(
                    iconData,
                    color: selectedIconTextColor,
                  ),
                ),
              ),
              FittedBox(
                fit: BoxFit.fitHeight,
                child: Text(
                  text!,
                  style:
                      TextStyle(fontSize: 15, color: selectedIconTextColor),
                ),
              )
            ],
          ),
        ),
      ),
      Opacity(
        opacity: iconOnlyOpacity,
        child: Container(
          decoration: BoxDecoration(
              boxShadow: [
                BoxShadow(
                    color: Colors.black26,
                    offset: Offset(0, 4),
                    blurRadius: 6),
              ],
              color: noSelectedBgColor,
              borderRadius: BorderRadius.all(Radius.circular(20))),
          padding: EdgeInsets.all(10),
          child: FittedBox(
            fit: BoxFit.fill,
            child: Icon(
              iconData,
              color: noSelectedIconTextColor,
            ),
          ),
        ),
      ),
    ],
  ));
}