public VisualTreeItem FindNode(object target)
{
// it might be faster to have a map for the lookup
// check into this at some point
if (this.Target == target)
{
if (DXMethods.IsChrome(Target) && target is IInputElement)
{
var root = DXMethods.GetRoot(Target);
if (root != null)
{
var child = RenderTreeHelper.HitTest(root, System.Windows.Input.Mouse.GetPosition((IInputElement)target));
var node = FindNode(child);
if (node != null)
{
return(node);
}
}
}
return(this);
}
foreach (VisualTreeItem child in this.Children)
{
VisualTreeItem node = child.FindNode(target);
if (node != null)
{
return(node);
}
}
return(null);
}
public static object GetChild(object source, int index)
{
if (DXMethods.IsChrome(source))
{
return(DXMethods.GetRoot(source));
}
if (DXMethods.IsIFrameworkRenderElementContext(source))
{
var control = DXMethods.Is(source, "RenderControlBaseContext", "DevExpress.Xpf.Core.Native", false) ? ((dynamic)source).Control : null;
var rcc = DXMethods.RenderChildrenCount(source);
if (index >= rcc)
{
if (index == rcc && control != null)
{
return(control);
}
return(null);
}
return(DXMethods.GetRenderChild(source, index));
}
if (source is Visual)
{
return(VisualTreeHelper.GetChild((Visual)source, index));
}
return(null);
}
public static VisualTreeItem Construct(object target, VisualTreeItem parent)
{
VisualTreeItem visualTreeItem;
if (DXMethods.IsFrameworkRenderElementContext(target))
{
visualTreeItem = new VisualItem(target, parent);
}
else if (target is Visual)
{
visualTreeItem = new VisualItem((Visual)target, parent);
}
else if (target is ResourceDictionary)
{
visualTreeItem = new ResourceDictionaryItem((ResourceDictionary)target, parent);
}
else if (target is Application)
{
visualTreeItem = new ApplicationTreeItem((Application)target, parent);
}
else
{
visualTreeItem = new VisualTreeItem(target, parent);
}
visualTreeItem.Reload();
return(visualTreeItem);
}
private void HandleTargetOrIsActiveChanged()
{
if (this.IsActive && (this.Target is Visual || DXMethods.IsFrameworkRenderElementContext(this.Target)))
{
this.Zoomer.Target = this.Target;
}
else
{
Brush pooSniffer = (Brush)this.FindResource("previewerSnoopDogDrawingBrush");
this.Zoomer.Target = pooSniffer;
}
}
public static object HitTest(object root, Point point)
{
if (hitTest == null)
{
hitTest = ReflectionHelper.CreateInstanceMethodHandler <Func <object, object, object> >(
null,
"HitTest",
BindingFlags.Public | BindingFlags.Static,
DXMethods.GetCoreAssembly(root).GetType("DevExpress.Xpf.Core.Native.RenderTreeHelper"),
true, typeof(object), null, 2
);
}
return(hitTest(root, point));
}
public static IEnumerable <object> RenderAncestors(object context)
{
if (renderAncestors == null)
{
renderAncestors = ReflectionHelper.CreateInstanceMethodHandler <Func <object, IEnumerable> >(
null,
"RenderAncestors",
BindingFlags.Public | BindingFlags.Static,
DXMethods.GetCoreAssembly(context).GetType("DevExpress.Xpf.Core.Native.RenderTreeHelper"),
true, typeof(IEnumerable), null
);
}
return(renderAncestors(context).OfType <object>());
}
public static Transform TransformToRoot(object frec)
{
if (transformToRoot == null)
{
transformToRoot = ReflectionHelper.CreateInstanceMethodHandler <Func <object, Transform> >(
null,
"TransformToRoot",
BindingFlags.Public | BindingFlags.Static,
DXMethods.GetCoreAssembly(frec).GetType("DevExpress.Xpf.Core.Native.RenderTreeHelper"),
true, typeof(Transform), null
);
}
return(transformToRoot(frec));
}
public static bool IsDescendantOf(object visual, object rootVisual)
{
if (visual is Visual && rootVisual is Visual)
{
return(((Visual)visual).IsDescendantOf((Visual)rootVisual));
}
if (DXMethods.IsFrameworkRenderElementContext(visual) && DXMethods.IsFrameworkRenderElementContext(rootVisual))
{
return(RenderTreeHelper.RenderAncestors((visual)).Any(x => x == rootVisual));
}
if (DXMethods.IsFrameworkRenderElementContext(visual) && rootVisual is Visual)
{
return(DXMethods.GetParent(((dynamic)visual).ElementHost).Parent.IsDescendantOf((Visual)rootVisual));
}
return(false);
}
protected override void OnSelectionChanged()
{
// Add adorners for the visual this is representing.
Visual visual_ = this.Visual as Visual;
Thickness offset = new Thickness();
if (visual_ == null)
{
var frec = (dynamic)this.Visual;
if (frec != null && CommonTreeHelper.IsVisible(frec))
{
var fe = DXMethods.GetParent(frec.ElementHost);
visual_ = fe;
var transform = RenderTreeHelper.TransformToRoot(frec).Inverse;
var trrec = transform.TransformBounds(new Rect(fe.RenderSize));
offset = new Thickness(-trrec.Left, -trrec.Top, fe.RenderSize.Width - trrec.Right, fe.RenderSize.Height - trrec.Bottom);
}
}
AdornerLayer adorners = visual_ == null ? null : AdornerLayer.GetAdornerLayer(visual_);
UIElement visualElement = visual_ as UIElement;
if (adorners != null && visualElement != null)
{
if (this.IsSelected && this.adorner == null)
{
Border border = new Border();
border.BorderThickness = new Thickness(4);
border.Margin = offset;
Color borderColor = new Color();
borderColor.ScA = .3f;
borderColor.ScR = 1;
border.BorderBrush = new SolidColorBrush(borderColor);
border.IsHitTestVisible = false;
this.adorner = new AdornerContainer(visualElement);
adorner.Child = border;
adorners.Add(adorner);
}
else if (this.adorner != null)
{
adorners.Remove(this.adorner);
this.adorner.Child = null;
this.adorner = null;
}
}
}
public FREDrawingVisual(object context)
{
this.context = context;
using (var dc = this.RenderOpen()) {
DXMethods.Render(((dynamic)context).Factory, dc, context);
var controls = new object[] { context }.Concat(RenderTreeHelper.RenderDescendants(context));
foreach (object ctrl in controls)
{
if (!DXMethods.Is(ctrl, "RenderControlBaseContext", null, false))
{
continue;
}
var dctrl = ((dynamic)ctrl);
dc.PushTransform((dctrl).GeneralTransform);
dc.DrawRectangle(new VisualBrush((dctrl).Control), null, new Rect(new Point(0, 0), (dctrl).RenderSize));
dc.Pop();
}
dc.Close();
}
}
public static int GetChildrenCount(object source)
{
if (DXMethods.IsChrome(source))
{
object root = DXMethods.GetRoot(source);
if (root != null)
{
return(1);
}
}
if (DXMethods.IsIFrameworkRenderElementContext(source))
{
int hasControl = DXMethods.Is(source, "RenderControlBaseContext", "DevExpress.Xpf.Core.Native", false) && ((dynamic)source).Control != null ? 1 : 0;
return(DXMethods.RenderChildrenCount(source) + hasControl);
}
if (source is Visual)
{
return(VisualTreeHelper.GetChildrenCount((Visual)source));
}
return(0);
}
private void HandleCanMagnify(object sender, CanExecuteRoutedEventArgs e)
{
e.CanExecute = (this.Target as Visual) != null || DXMethods.IsFrameworkRenderElementContext(this.Target);
e.Handled = true;
}
