protected override void Activate(ModelItem item)
{
designObject = item.GetCurrentValue() as LinkableControl;//获得被点击的控件对象
if (designObject != null)
{
designCanvas = designObject.Parent as Panel;
DesignerView v = DesignerView.FromContext(Context);
adorner = new ControlAdorner(designObject);
adorner.RenderTransform = new ScaleTransform(v.ZoomLevel, v.ZoomLevel);
foreach (var pin in adorner.Children)
{
pin.MouseLeftButtonDown += new MouseButtonEventHandler(Pin_MouseLeftButtonDown); //按下左键选中hitPin，开始拖动
pin.MouseMove += new MouseEventHandler(Pin_MouseMove); //移动鼠标，开始找寻目标连接节点
}
AdornerPanel.SetAdornerHorizontalAlignment(adorner, AdornerHorizontalAlignment.Stretch);
AdornerPanel.SetAdornerVerticalAlignment(adorner, AdornerVerticalAlignment.Stretch);
_panel.Children.Add(adorner);
Adorners.Add(_panel);
v.ZoomLevelChanged += (s, e) => { adorner.RenderTransform = new ScaleTransform(v.ZoomLevel, v.ZoomLevel); };
}
base.Activate(item);
}
protected override void Activate(ModelItem item)
{
base.Activate(item);
CurrentItem = item;
View = DesignerView.FromContext(Context);
View.PreviewMouseLeftButtonDown += OnPreviewMouseLeftButtonDown;
}
internal static Vector GetZoomFactor(EditingContext context)
{
DesignerView designerView = DesignerView.FromContext(context);
if (designerView == null)
{
return(new Vector(1.0, 1.0));
}
return(TransformUtil.GetScaleFromTransform(designerView.GetZoomTransform()));
}
internal static Transform GetSelectionFrameTransformToDesignerView(EditingContext context, ViewItem view)
{
DesignerView designerView = DesignerView.FromContext(context);
if (designerView == null)
{
return(Transform.Identity);
}
return(TransformUtil.GetSelectionFrameTransformToParentVisual(view, (Visual)designerView));
}
internal static DesignerView GetDesignerView(ModelItem item)
{
EditingContext context = item.Context;
DesignerView designerView = (DesignerView)null;
if (context != null)
{
designerView = DesignerView.FromContext(context);
}
return(designerView);
}
internal static CanonicalTransform GetCanonicalTransformToDesignerView(EditingContext context, ViewItem view)
{
if (view == (ViewItem)null)
{
throw new ArgumentNullException("view");
}
DesignerView designerView = DesignerView.FromContext(context);
if (designerView == null)
{
return(new CanonicalTransform(Transform.Identity));
}
return(new CanonicalTransform(TransformUtil.GetTransformToAncestor(view, (Visual)designerView)));
}
void Pin_MouseMove(object s, MouseEventArgs e)
{
if (e.LeftButton != MouseButtonState.Pressed)
{
isdrag = false;
}
if (isdrag && hitPin != null && designCanvas != null)
{
PinAdorner pinAdorner = new PinAdorner(designCanvas, hitPin);
pinAdorner.MouseUp += new MouseButtonEventHandler(pinAdorner_MouseUp);
DesignerView v = DesignerView.FromContext(Context);
double zoom = v.ZoomLevel;
pinAdorner.RenderTransform = new ScaleTransform(zoom, zoom);
_panel.Children.Add(pinAdorner);
e.Handled = true;
}
}
private static void OnModelItemPropertyChanged(object sender, PropertyChangedEventArgs e)
{
if (!(e.PropertyName == BaseAdornerLayout.RenderTransformProperty))
{
return;
}
ModelItem modelItem = sender as ModelItem;
if (modelItem == null || !(modelItem.View != (ViewItem)null))
{
return;
}
DesignerView designerView = DesignerView.FromContext(modelItem.Context);
if (designerView == null)
{
return;
}
designerView.InvalidateArrange();
}
protected override Rect GetBoundingRectangleCore()
{
if (this._item.Parent == null && this._item != this._item.Root && this._item.Name != null)
{
ModelItem modelItem = this.ModelService.FromName(this.ModelService.Root, this._item.Name, StringComparison.OrdinalIgnoreCase);
if (modelItem != null)
{
this._item = modelItem;
}
}
PresentationSource presentationSource = PresentationSource.FromVisual((Visual)DesignerView.FromContext(this._item.Context));
if (presentationSource == null || presentationSource.RootVisual == null || !this.ViewItem.IsVisible)
{
return(new Rect());
}
Rect selectionFrameBounds = ElementUtilities.GetSelectionFrameBounds(this.ViewItem);
if (selectionFrameBounds.Location == new Point(0.0, 0.0) && selectionFrameBounds.Size == new Size(0.0, 0.0))
{
return(new Rect());
}
Rect rect1 = new Rect(selectionFrameBounds.Size);
Rect rect2 = TransformUtil.GetSelectionFrameTransformToParentVisual(this.ViewItem, presentationSource.RootVisual).TransformBounds(rect1);
return(new Rect(presentationSource.RootVisual.PointToScreen(rect2.Location), rect2.Size));
}
internal static Vector GetZoomRounding(EditingContext context)
{
return(DesignerUtilities.GetZoomRounding(DesignerView.FromContext(context)));
}
internal static double GetInvertZoom(EditingContext context)
{
return(DesignerUtilities.GetInvertZoom(DesignerView.FromContext(context)));
}