private void UpdateThumbHeight(object sender, EventArgs e)
{
if (ScrollNeeded)
{
ScrollThumb.UpdateHeight(sender as ScrollBar, _ownerContents);
}
}
public void Initialize()
{
ScrollBar = new ScrollBar();
ScrollBar.Width = _style.ScrollBarWidth;
ScrollBar.Height = _owner.Bounds.Height - _owner.DragBounds.Height;
ScrollBar.AnchorTo(_owner, PositionType.Inside_Top_Right, -8, 27, AnchorType.Bounds);
if (_style.ScrollUpButtonStyle != null && _style.ScrollDownButtonStyle != null)
{
ScrollUpBtn = new Button(_style.ScrollUpButtonStyle);
ScrollUpBtn.AnchorTo(
ScrollBar, PositionType.Inside_Top_Left, 0, 0, AnchorType.Bounds
);
ScrollDownBtn = new Button(_style.ScrollDownButtonStyle);
ScrollDownBtn.AnchorTo(
ScrollBar, PositionType.Inside_Bottom_Left, 0, 0, AnchorType.Bounds
);
HasButtons = true;
}
ScrollThumb = new ScrollThumb(this, _style);
ScrollThumb.EnableDragging = true;
ScrollThumb.MoveTo(new Vector2(ScrollBarArea.X, ScrollBarArea.Y));
ScrollThumb.Width = _style.ScrollThumbWidth;
ScrollThumb.UpdateHeight(ScrollBar, _ownerContents);
ScrollThumb.OnScrolled += Scroll;
// USE CASES FOR UPDATING THE SCROLL THUMB HEIGHT HERE:
_owner.ContentManager.OnItemAdded += UpdateThumbHeight;
_owner.ContentManager.OnItemRemoved += UpdateThumbHeight;
if (_owner.ContentManager.Contents[0] != null)
{
_containerKeyItem = _owner.ContentManager.Contents[0];
_containerStartPosition = _containerKeyItem.Position;
}
// Input Handlers
var contents = new Contents();
contents.Add(ScrollBar);
contents.Add(ScrollThumb);
if (HasButtons)
{
contents.Add(ScrollUpBtn);
contents.Add(ScrollDownBtn);
}
_input = new InputHandler(contents);
Initialized = true;
}
