public void Scroll(int dx, int dy, uint x, uint y, ScrollState state)
{
_cumulativeDy += dy;
if (_cumulativeDy > 0)
{
// scroll up
FloatingButtonVisibility = true;
}
else if (_cumulativeDy < 0)
{
// scroll down
FloatingButtonVisibility = false;
}
if (state == ScrollState.End)
{
_cumulativeDy = 0;
}
var offset = _toolbarOffset - dy;
offset = Math.Max(0, offset);
offset = Math.Min(ToolbarHeight, offset);
dy -= ToolbarOffset - offset;
ToolbarOffset = offset;
_servo.Scroll(dx, dy, x, y, state);
}
