C# Part.GetAdornment方法代码示例

 /// <summary>
 /// Show an <see cref="Adornment"/> with resize handles at points along the edge of bounds of the <see cref="AdornedElement"/>,
 /// if the node is selected and visible and if <see cref="Northwoods.GoXam.Part.CanResize"/> is true.
 /// </summary>
 /// <param name="part"></param>
 /// <remarks>
 /// You can change the template used to create the adornment by setting <see cref="Part.ResizeAdornmentTemplate"/>.
 /// If that property is null, this uses a default template with eight resize handles
 /// at the four corners and at the middles of the four sides.
 /// </remarks>
 public override void UpdateAdornments(Part part) {
   if (part == null || part is Link) return;  // can't resize links
   Adornment adornment = null;
   if (part.IsSelected) {
     FrameworkElement selelt = part.SelectionElement;
     if (selelt != null && part.CanResize() && Part.IsVisibleElement(selelt)) {
       adornment = part.GetAdornment(ToolCategory);
       if (adornment == null) {
         DataTemplate template = part.ResizeAdornmentTemplate;
         if (template == null) template = Diagram.FindDefault<DataTemplate>("DefaultResizeAdornmentTemplate");
         adornment = part.MakeAdornment(selelt, template);
         if (adornment != null) {
           adornment.Category = ToolCategory;
           adornment.LocationSpot = Spot.TopLeft;
         }
       }
       if (adornment != null) {
         Point loc = part.GetElementPoint(selelt, Spot.TopLeft);
         double angle = part.GetAngle(selelt);
         UpdateResizeHandles(adornment.VisualElement, angle);
         adornment.Location = loc;
         adornment.RotationAngle = angle;
         adornment.Remeasure();
       }
     }
   }
   part.SetAdornment(ToolCategory, adornment);
 }

 /// <summary>
 /// Show an <see cref="Adornment"/> with resize handles at points along the edge of bounds of the <see cref="AdornedElement"/>,
 /// if the node is selected and visible and if <see cref="Northwoods.GoXam.Part.CanResize"/> is true.
 /// </summary>
 /// <param name="part"></param>
 /// <remarks>
 /// <para>
 /// First this finds the element in the visual tree of the <paramref name="part"/> that should
 /// get the resize adornment and that the user will be able to resize interactively.
 /// It finds the element that has the <see cref="Part.ResizeElementName"/> property of the part.
 /// If the <see cref="Part.ResizeElementName"/> property is null, as it is by default, it uses
 /// the part's <see cref="Part.SelectionElement"/>.
 /// </para>
 /// <para>
 /// It then constructs the adornment template, associating it with the chosen resize element.
 /// </para>
 /// <para>
 /// You can change the template used to create the adornment by setting <see cref="Part.ResizeAdornmentTemplate"/>.
 /// If that property is null, this uses a default template with eight resize handles
 /// at the four corners and at the middles of the four sides.
 /// </para>
 /// <para>
 /// This only gives a resize adornment to <see cref="Node"/>s, not to <see cref="Link"/>s.
 /// </para>
 /// </remarks>
 public override void UpdateAdornments(Part part) {
   if (part == null || part is Link) return;  // can't resize links
   Adornment adornment = null;
   if (part.IsSelected) {
     FrameworkElement selelt = null;
     String eltname = part.ResizeElementName;
     if (eltname != null) selelt = part.FindNamedDescendant(eltname);
     if (selelt == null) selelt = part.SelectionElement;
     if (selelt != null && part.CanResize() && Part.IsVisibleElement(selelt)) {
       adornment = part.GetAdornment(ToolCategory);
       if (adornment == null) {
         DataTemplate template = part.ResizeAdornmentTemplate;
         if (template == null) template = Diagram.FindDefault<DataTemplate>("DefaultResizeAdornmentTemplate");
         adornment = part.MakeAdornment(selelt, template);
         if (adornment != null) {
           adornment.Category = ToolCategory;
           adornment.LocationSpot = Spot.TopLeft;
         }
       }
       if (adornment != null) {
         Node node = (Node)part;
         Point loc = part.GetElementPoint(selelt, Spot.TopLeft);
         // use the node's angle, not part.GetAngle(selelt)
         //?? this can be wrong if there are additional rotational transforms in the tree
         double angle = node.RotationAngle;
         UpdateResizeHandles(adornment.VisualElement, angle);
         adornment.Location = loc;
         adornment.RotationAngle = angle;
         adornment.Remeasure();
       }
     }
   }
   part.SetAdornment(ToolCategory, adornment);
 }

 /// <summary>
 /// Show an <see cref="Adornment"/> with a rotate handle at a point to the side of the <see cref="AdornedElement"/>,
 /// if the node is selected and visible and if <see cref="Northwoods.GoXam.Part.CanRotate"/> is true.
 /// </summary>
 /// <param name="part"></param>
 /// <remarks>
 /// You can change the template used to create the adornment by setting <see cref="Part.RotateAdornmentTemplate"/>.
 /// If that property is null, this uses a default template that produces a small circle.
 /// </remarks>
 public override void UpdateAdornments(Part part) {
   if (part == null || part is Link) return;  // this tool never applies to Links
   Adornment adornment = null;
   if (part.IsSelected) {
     FrameworkElement selelt = part.SelectionElement;
     if (selelt != null && part.CanRotate() && Part.IsVisibleElement(selelt)) {
       adornment = part.GetAdornment(ToolCategory);
       if (adornment == null) {
         DataTemplate template = part.RotateAdornmentTemplate;
         if (template == null) template = Diagram.FindDefault<DataTemplate>("DefaultRotateAdornmentTemplate");
         adornment = part.MakeAdornment(selelt, template);
         if (adornment != null) {
           adornment.Category = ToolCategory;
           adornment.LocationSpot = Spot.Center;
         }
       }
       if (adornment != null) {
         adornment.Location = part.GetElementPoint(selelt, new Spot(1, 0.5, 30, 0));  //?? fixed distance from middle right side
       }
     }
   }
   part.SetAdornment(ToolCategory, adornment);
 }

 /// <summary>
 /// Show an <see cref="Adornment"/> with a rotate handle at a point to the side of the <see cref="AdornedElement"/>,
 /// if the node is selected and visible and if <see cref="Northwoods.GoXam.Part.CanRotate"/> is true.
 /// </summary>
 /// <param name="part"></param>
 /// <remarks>
 /// You can change the template used to create the adornment by setting <see cref="Part.RotateAdornmentTemplate"/>.
 /// If that property is null, this uses a default template that produces a small circle.
 /// </remarks>
 public override void UpdateAdornments(Part part) {
   if (part == null || part is Link) return;  // this tool never applies to Links
   Adornment adornment = null;
   if (part.IsSelected) {
     FrameworkElement selelt = part.SelectionElement;
     if (selelt != null && part.CanRotate() && Part.IsVisibleElement(selelt)) {
       adornment = part.GetAdornment(ToolCategory);
       if (adornment == null) {
         DataTemplate template = part.RotateAdornmentTemplate;
         if (template == null) template = Diagram.FindDefault<DataTemplate>("DefaultRotateAdornmentTemplate");
         adornment = part.MakeAdornment(selelt, template);
         if (adornment != null) {
           adornment.Category = ToolCategory;
           adornment.LocationSpot = Spot.Center;
         }
       }
       if (adornment != null) {
         Rect rect = part.GetElementBounds(part.VisualElement);  //?? outside whole node
         Point center = Spot.Center.PointInRect(rect);
         double angle = part.GetAngle(selelt);
         adornment.Location = Geo.RotatePoint(new Point(rect.Right + 30, center.Y), center, angle);  //?? fixed distance
       }
     }
   }
   part.SetAdornment(ToolCategory, adornment);
 }