internal void Update(GuiElement element)
{
lock (Locker)
{
_elements.Remove(element);
_elements.Add(element);
}
}
internal override void Draw()
{
GuiElement lastEl = null;
if (_needsRearranged)
{
lock (Locker)
{
var count = _elements.Count;
for (int i = 0; i < count; i++)
{
var el = _elements[i];
var startP = AbsolutePosition;
var startS = Vector2.Zero;
if (lastEl != null)
{
startP = lastEl.AbsolutePosition;
startS = lastEl.AbsoluteSize * _directionVec;
}
if (Reversed)
{
el.AbsolutePosition = startP - _offset - startS;
}
else
{
el.AbsolutePosition = startP + _offset + startS;
}
el.Arrange();
el.Children.EnterReadLock();
foreach (var child in el.Children)
{
var chel = child as GuiElement;
chel?.Measure();
}
el.Children.ExitReadLock();
lastEl = el;
}
_needsRearranged = false;
}
}
base.Draw();
}
/// <summary>
/// Sets the element and property that the animation will be applied to.
/// </summary>
public void SetTarget(GuiElement element, string property)
{
lock (Locker)
{
if (element == null)
{
throw new ArgumentException("The target element cannot be null.");
}
if (string.IsNullOrEmpty(property))
{
throw new ArgumentException("The target property cannot be null or empty.");
}
var prop = element.GetType().GetProperty(property);
var instAttr = prop?.DeclaringType?.GetCustomAttribute <TypeIdAttribute>();
var memberAttr = prop?.GetCustomAttribute <InstMemberAttribute>();
if (prop == null)
{
throw new ArgumentException($"No property found for \"{property}\".");
}
if (prop.PropertyType != TargetType)
{
throw new ArgumentException(
$"The animation type ({TargetType}) does not match the property type of \"{property}\" ({prop.PropertyType}).");
}
if ((memberAttr == null) || (instAttr == null))
{
throw new ArgumentException($"The property {property} of {element} cannot be animated.");
}
TargetProperty =
Inst.TypeDictionary[element.ClassName].TaggedProperties[
Inst.EncodePropertyTag(instAttr.Id, memberAttr.Tag)];
TargetElement = element;
}
}
private bool HitTestItem(ref GuiElement el, float x, float y, bool includeZIndexed, out GuiElement result)
{
result = null;
if (el == null || !el.CheckCanDraw() || (el.ZIndex != 0 && !includeZIndexed))
{
return(false);
}
if (el.LayoutRect.Contains(x, y) && el.IsHitTestVisible & el.BackgroundColour.a > 0)
{
result = el;
return(true);
}
var children = el.Children;
for (int i = 0; i < children.Count; i++)
{
GuiElement item;
var child = children[i] as GuiElement;
if (HitTestItem(ref child, x, y, includeZIndexed, out item))
{
result = item;
return(true);
}
}
return(false);
}
