protected override Size ArrangeOverride(Size arrangeSize)
{
Performance.StartTiming(PerformanceMarks.AdornerArrange);
if (VisualTreeHelper.GetParent((DependencyObject)this) != null)
{
if (this._needEvaluateLayout)
{
this._needEvaluateLayout = false;
this._evaluateLayoutList = (List <UIElement>)null;
this.EvaluateLayout();
}
else if (this._evaluateLayoutList != null)
{
List <UIElement> list = this._evaluateLayoutList;
this._evaluateLayoutList = (List <UIElement>)null;
DesignerView currentDesignerView = this.CurrentDesignerView;
foreach (UIElement adorner in list)
{
AdornerProperties.GetLayout((DependencyObject)adorner).EvaluateLayout(currentDesignerView, adorner);
}
}
foreach (UIElement adorner in this.InternalChildren)
{
AdornerProperties.GetLayout((DependencyObject)adorner).Arrange(adorner);
}
}
Performance.StopTiming(PerformanceMarks.AdornerArrange);
return(arrangeSize);
}
private void EvaluateLayout()
{
if (this.Visibility != Visibility.Collapsed && this._hasRendered)
{
if (this.VisualChildrenCount <= 0 || this.CurrentDesignerView == null)
{
return;
}
List <UIElement> list = (List <UIElement>)null;
foreach (UIElement adorner in this.InternalChildren)
{
if (!AdornerProperties.GetLayout((DependencyObject)adorner).EvaluateLayout(this.CurrentDesignerView, adorner))
{
if (list == null)
{
list = new List <UIElement>();
}
list.Add(adorner);
}
}
if (list == null)
{
return;
}
foreach (UIElement element in list)
{
this.InternalChildren.Remove(element);
}
}
else
{
this._needEvaluateLayout = true;
}
}
internal void OnLayoutChanged(UIElement adorner)
{
if (VisualTreeHelper.GetParent((DependencyObject)this) == null)
{
return;
}
AdornerProperties.GetLayout((DependencyObject)adorner).EvaluateLayout(this.CurrentDesignerView, adorner);
this.InvalidateArrange();
}
protected override Size MeasureOverride(Size constraint)
{
Performance.StartTiming(PerformanceMarks.AdornerMeasure);
if (VisualTreeHelper.GetParent((DependencyObject)this) != null)
{
foreach (UIElement adorner in this.InternalChildren)
{
AdornerProperties.GetLayout((DependencyObject)adorner).Measure(adorner, constraint);
}
}
Performance.StopTiming(PerformanceMarks.AdornerMeasure);
return(new Size());
}
