/// <summary>
/// Gets the element's desired size, using the specified available.
/// </summary>
/// <param name="element"></param>
/// <param name="availableSize"></param>
/// <returns></returns>
public SizeF GetDesiredSize(RadElement element, SizeF availableSize)
{
//suspend theme updates for the element
element.SuspendThemeRefresh();
RadElement parent = element.Parent;
int indexInChildrenCollection = -1;
if (parent != null)
{
indexInChildrenCollection = parent.Children.IndexOf(element);
}
ElementVisibility oldVisibility = element.Visibility;
if (oldVisibility != ElementVisibility.Visible)
{
element.Visibility = ElementVisibility.Visible;
}
this.RootElement.Children.Add(element);
element.ResetLayout(true);
element.Measure(availableSize);
SizeF desiredSize = element.GetDesiredSize(false);
//add the element to its previous parent (it will be automatically removed from its current parent)
if (parent != null)
{
parent.Children.Insert(indexInChildrenCollection, element);
}
else
{
this.RootElement.Children.Remove(element);
}
if (oldVisibility != ElementVisibility.Visible)
{
element.Visibility = oldVisibility;
}
element.ResumeThemeRefresh();
return(desiredSize);
}
public virtual SizeF MeasureItem(Item item, SizeF availableSize)
{
IVirtualizedElement <Item> element = this.ViewElement.ElementProvider.GetElement(item, (object)null);
RadElement radElement = (RadElement)element;
this.SuspendLayout();
this.Children.Add(radElement);
element.Attach(item, (object)null);
radElement.ResetLayout(true);
radElement.Measure(availableSize);
SizeF desiredSize = radElement.GetDesiredSize(false);
this.Children.Remove(radElement);
this.ViewElement.ElementProvider.CacheElement(element);
element.Detach();
this.ResumeLayout(false);
return(desiredSize);
}
public SizeF GetDesiredSize(RadElement element, SizeF availableSize)
{
element.SuspendThemeRefresh();
RadElement parent = element.Parent;
int index = -1;
if (parent != null)
{
index = parent.Children.IndexOf(element);
}
ElementVisibility visibility = element.Visibility;
if (visibility != ElementVisibility.Visible)
{
element.Visibility = ElementVisibility.Visible;
}
this.RootElement.Children.Add(element);
element.ResetLayout(true);
element.Measure(availableSize);
SizeF desiredSize = element.GetDesiredSize(false);
if (parent != null)
{
parent.Children.Insert(index, element);
}
else
{
this.RootElement.Children.Remove(element);
}
if (visibility != ElementVisibility.Visible)
{
element.Visibility = visibility;
}
element.ResumeThemeRefresh();
return(desiredSize);
}
