public override HitBox HitTest()
{
if (!IsVisible())
{
return(HitBox.Miss);
}
HitBox hit;
if ((hit = _scrollBar.HitTest()).IsHit)
{
return(hit);
}
for (int i = VerticalScrollIndex * HorizontalMaxVisibleItems;
i < _items.Count && i - (VerticalScrollIndex * HorizontalMaxVisibleItems) < MaxVisibleItemsTotal;
i++)
{
if (!_items[i].HitTest())
{
continue;
}
_selectedItem = _items[i];
OnSelect?.Invoke(_items[i].Value);
return(HitBox.Hit(this));
}
_clickable.HitTest(MouseButton.Left);
if (_clickable.IsDown(MouseButton.Left))
{
return(HitBox.Hit(this));
}
return(HitBox.Miss);
}
public void Select(T value)
{
var index = _items.FindIndex(it => it.Value.Equals(value));
_selectedItem = _items[index];
OnSelect?.Invoke(value);
VerticalScrollTo(index.Clamp(0, VerticalMaxScrollIndex));
}
public void AddItem(ImageBox image, T value)
{
image.Parent = this;
image.Window = Window;
var item = new PaletteBoxItem
{
Value = value,
ImageBox = image
};
_items.Add(item);
IsDirty = true;
}
public void AddRange(IEnumerable <ImageBox> images, Func <Sprite, T> valueFunc)
{
foreach (var img in images)
{
img.Parent = this;
img.Window = Window;
var item = new PaletteBoxItem
{
Value = valueFunc(img.Sprite),
ImageBox = img,
};
_items.Add(item);
}
IsDirty = true;
}
