tooltip<T extends DanmuModel> method

Implementation

Positioned? tooltip<T extends DanmuModel>(DanmuItem<T>? selectedItem) {
  if (selectedItem == null) {
    return null;
  }
  return Positioned(
    key: selectedItem.valueKey("tooltip"),
    left: _menuRect.left + (isUpward ? 0 : 4),
    top: _menuRect.top + (isUpward ? 4 : 0),
    child: SizedBox(
      height: _menuRect.height,
      width: _menuRect.width,
      child: BubbleBox(
        isUpward: isUpward,
        pointerBias: pointerBias,
        strokeWidth: 1.2,
        borderRadius: 6,
        pointerWidth: 8.25,
        pointerHeight: 5.25,
        peakRadius: 2.5,
        isWrapped: false,
        child: Padding(
          padding: EdgeInsets.only(
            top: isUpward ? 6 : 0,
            bottom: isUpward ? 0 : 6,
          ),
          child: tooltipContent,
        ),
      ),
    ),
  );
}