public virtual Size GetBorderOffset()
{
if (this.element.cachedBorderOffset == LayoutUtils.InvalidSize)
{
SizeF borderSize = SizeF.Empty;
IBoxElement parentBox = this.Parent as IBoxElement;
if ((parentBox != null) && (this.Parent.Visibility != ElementVisibility.Collapsed))
{
borderSize = parentBox.Offset;
}
if (this.element is IBoxElement)
{
return(borderSize.ToSize());
}
//Fix
if (this.element is FillPrimitive)
{
return(borderSize.ToSize());
}
SizeF childBorderSize = this.GetMaxChildBorderOffset();
if (childBorderSize != SizeF.Empty)
{
borderSize = SizeF.Add(borderSize, childBorderSize);
}
this.element.cachedBorderOffset = borderSize.ToSize();
}
return(this.element.cachedBorderOffset);
}
/// <summary> Gets the index in the specified element to which this instance points. Throws if the specified element does not contain this index. Never returns InternalIndex.Last. </summary>
/// <param name="element"> The element to get the internal index in of this instance. </param>
public InternalIndex GetIndexIn(IBoxElement element)
{
#if DEBUG
// ReSharper disable once UnusedVariable
var DEBUGRESULT = element.Box.Elements.IndexOf(element);
#endif
//there are four options:
//firstly, the element is the one references by this.ElementIndex. In that case, the correct internal index is this.IndexInElement
if (ElementIsAt(this.ElementIndex, element))
return this.IndexInElement.MakeLastExplicit(element);
//secondly, if this.IndexInElement == 0, then the element could be at ElementIndex - 1, in which case InternalIndex.Last is the correct solution
if (this.IndexInElement == 0 && ElementIsAt(this.ElementIndex - 1, element))
return InternalIndex.Last.MakeLastExplicit((IBoxElement)element.Box[ElementIndex - 1]);
//thirdly, the specified element could be the one after the element references by ElementIndex. The answer is then InternalIndex.Zero, if the current IndexInElement is at the last position,
if (ElementIsAt(this.ElementIndex + 1, element))
{
//check whether the index in the currently references element is at the last position
if (this.IndexInElement == InternalIndex.Last)
return InternalIndex.First;
if (this.ElementIndex != 0 && ((IBoxElement)element.Box[ElementIndex - 1]).CaretPositionCount == IndexInElement)
return InternalIndex.First;
}
//lastly, the specified element cannot possibly contain this index
throw new ContractException("The specified element does not contain this index. ");
}
private SizeF GetMaxChildBorderNumber(RadElement parent, bool getAsSize)
{
if (parent == null)
{
return(SizeF.Empty);
}
SizeF maxBorderSize = SizeF.Empty;
foreach (RadElement child in parent.GetChildren(ChildrenListOptions.Normal))
{
if ((parent == this.Parent) && (child == this.element))
{
continue;
}
IBoxElement childBox = child as IBoxElement;
if (childBox == null)
{
continue;
}
if (child.LayoutableChildrenCount != 0)
{
continue;
}
maxBorderSize.Width = Math.Max(maxBorderSize.Width, (getAsSize ? childBox.HorizontalWidth : childBox.Offset.Width));
maxBorderSize.Height = Math.Max(maxBorderSize.Height, (getAsSize ? childBox.VerticalWidth : childBox.Offset.Height));
}
return(maxBorderSize);
}
public virtual Size GetBorderSize()
{
if (this.element.cachedBorderSize == LayoutUtils.InvalidSize)
{
SizeF borderSize = SizeF.Empty;
IBoxElement elementBox = this.element as IBoxElement;
if ((elementBox != null) && (this.element.Visibility != ElementVisibility.Collapsed))
{
borderSize = elementBox.BorderSize;
}
SizeF childBorderSize = GetMaxChildBorder();
if (childBorderSize != SizeF.Empty)
{
borderSize = SizeF.Add(borderSize, childBorderSize);
}
this.element.cachedBorderSize = borderSize.ToSize();
}
return(this.element.cachedBorderSize);
}
/// <summary> If this index is the special value "Last", then its explicit value is returned. Otherwise, its this instance is simply returned. </summary>
/// <param name="element"> The element in which this index points. </param>
internal InternalIndex MakeLastExplicit(IBoxElement element)
{
if (this == Last)
return (InternalIndex)Math.Max(0, element.CaretPositionCount - 1);
return this;
}
public ExplicitIndex(IBoxElement element, InternalIndex indexInElement)
: this()
{
Contract.Requires(element != null);
this.ElementIndex = element.Box.Elements.IndexOf(element);
Contract.Requires(this.ElementIndex != -1, "The specified element is not in the specified box. ");
this.IndexInElement = indexInElement;
}
/// <summary> Returns whether the specified element is at the specified index in that element's Box. Returns false if the index is out of range in the element.Box.Elements collection. </summary>
/// <param name="element"> The element to check to be present at the specified index. </param>
/// <param name="index"> The index to be checked for being in range and pointing to the specified element. </param>
private static bool ElementIsAt(ElementIndex index, IBoxElement element)
{
return 0 <= index
&& index < element.Box.Elements.ElementCount
&& element.Box[index] == element;
}
/// <summary> Gets the element index of the specified element. </summary>
public ElementIndex(IBoxElement element) : this()
{
//this ctor is just syntactic sugar
Contract.Requires(element != null);
this = element.Box.Elements.IndexOf(element);
}
