public override bool EvaluateLayout(DesignerView view, UIElement adorner)
{
if (view == null)
{
throw new ArgumentNullException("view");
}
if (adorner == null)
{
throw new ArgumentNullException("adorner");
}
BaseAdornerLayout.GetCache((DependencyObject)adorner).DesignerView = view;
BaseAdornerLayout.EnsureActualValues((DependencyObject)adorner);
ViewItem element = AdornerProperties.GetView((DependencyObject)adorner);
if (BaseAdornerLayout.IsAdornableElement(view, element))
{
object obj = adorner.ReadLocalValue(BaseAdornerLayout.OriginalVisibilityProperty);
if (obj != DependencyProperty.UnsetValue)
{
adorner.SetValue(UIElement.VisibilityProperty, obj);
adorner.ClearValue(BaseAdornerLayout.OriginalVisibilityProperty);
}
}
else
{
if (element != (ViewItem)null && adorner.ReadLocalValue(BaseAdornerLayout.OriginalVisibilityProperty) == DependencyProperty.UnsetValue)
{
adorner.SetValue(BaseAdornerLayout.OriginalVisibilityProperty, (object)adorner.Visibility);
adorner.Visibility = Visibility.Collapsed;
}
element = (ViewItem)null;
}
BaseAdornerLayout.CheckAndInvalidateAdorner(view, element, adorner);
return(true);
}
private static void EnsureActualValues(DependencyObject adorner)
{
ViewItem view = AdornerProperties.GetView(adorner);
ModelItem model = AdornerProperties.GetModel(adorner);
BaseAdornerLayout.LayoutCache cache = BaseAdornerLayout.GetCache(adorner);
if (cache.Model == model && !(cache.View != view))
{
return;
}
if (cache.Model != null)
{
cache.Model.PropertyChanged -= new PropertyChangedEventHandler(BaseAdornerLayout.OnModelItemPropertyChanged);
}
cache.Model = model;
cache.View = view;
if (model == null)
{
return;
}
model.PropertyChanged += new PropertyChangedEventHandler(BaseAdornerLayout.OnModelItemPropertyChanged);
}
public override void Arrange(UIElement adorner)
{
BaseAdornerLayout.LayoutCache cache = BaseAdornerLayout.GetCache((DependencyObject)adorner);
Matrix m1_1 = cache.ElementToDesignerViewTransformMatrix;
Matrix m1_2 = cache.DesignerViewToViewportMatrix;
if (!MathUtilities.AreClose(m1_1, cache.ElementToDesignerViewTransformMatrix) || !MathUtilities.AreClose(m1_2, cache.DesignerViewToViewportMatrix))
{
this.SetupTransform(adorner);
}
Vector scale = (Vector)adorner.GetValue(TransformAwareAdornerLayout.DesignerElementScalingFactorWithZoom);
ViewItem view = AdornerProperties.GetView((DependencyObject)adorner);
this.SetAdornerBounds(adorner, view, new Point(0.0, 0.0), scale);
if (!(view != (ViewItem)null) || cache.PlatformObjectHashCode == 0 || cache.PlatformObjectHashCode == view.PlatformObject.GetHashCode())
{
return;
}
cache.View = view;
cache.RenderSize = view.RenderSize;
cache.PlatformObjectHashCode = view.PlatformObject.GetHashCode();
}
