"When tapped, the children expand to be visible, draggable via drag, and upon onPanEnd, designed to reattach to the left or right based on the given screen center."

The children parameter provides a list of child widgets to include in the bar. It can contain a maximum of five child widgets.

The initialYOffsetPercentage parameter represents the initial Y offset of the bar relative to the top of the parent widget. Its value must be between 0 and 1.

The expansionWidthPercentage parameter determines the percentage of the parent widget's width occupied by the expanded bar. It must be between 0 and 1.

The collapsedOpacity parameter determines the opacity of the bar when collapsed. It must be between 0 and 1.

The expandedOpacity parameter determines the opacity of the bar when expanded. It must be between 0 and 1.

Note: The width of each child in children is determined by the expansionWidthPercentage parameter, which calculates the available width based on the parent widget's width. Each child's width is then constrained by subtracting the padding between children (childrenPadding) and dividing by the number of children. Therefore, careful consideration should be given to the value of childrenPadding.

Example: If the parent widget's width is 500, and expansionWidthPercentage is 0.5, then the expansion width will be 250. With a childrenPadding of 10 and a list of 5 children, each child can have a maximum width of (250 - 10 * 5) / 5 = 40.

#Basic UI and onPanEnd

#Expansion when onTap

#Dragging when onPanupdate

#collased floating bar UI changes

#expanded floating bar UI changes

#constraints depends on parent's size & parameter