暂存一下

AIStudio.Wpf.DiagramDesigner/Controls/ZoomBox.cs

@@ -13,14 +13,21 @@ namespace AIStudio.Wpf.DiagramDesigner
         private Thumb zoomThumb;
         private Canvas zoomCanvas;
         private Slider zoomSlider;
+        private DiagramControl diagramControl;
 
         #region DPs
 
         #region ScrollViewer
         public ScrollViewer ScrollViewer
         {
-            get { return (ScrollViewer)GetValue(ScrollViewerProperty); }
-            set { SetValue(ScrollViewerProperty, value); }
+            get
+            {
+                return (ScrollViewer)GetValue(ScrollViewerProperty);
+            }
+            set
+            {
+                SetValue(ScrollViewerProperty, value);
+            }
         }
 
         public static readonly DependencyProperty ScrollViewerProperty =
@@ -38,8 +45,14 @@ namespace AIStudio.Wpf.DiagramDesigner
 
         public DesignerCanvas DesignerCanvas
         {
-            get { return (DesignerCanvas)GetValue(DesignerCanvasProperty); }
-            set { SetValue(DesignerCanvasProperty, value); }
+            get
+            {
+                return (DesignerCanvas)GetValue(DesignerCanvasProperty);
+            }
+            set
+            {
+                SetValue(DesignerCanvasProperty, value);
+            }
         }
 
 
@@ -47,7 +60,7 @@ namespace AIStudio.Wpf.DiagramDesigner
         {
             ZoomBox target = (ZoomBox)d;
             DesignerCanvas oldDesignerCanvas = (DesignerCanvas)e.OldValue;
-            DesignerCanvas newDesignerCanvas = target.DesignerCanvas;
+            DesignerCanvas newDesignerCanvas = (DesignerCanvas)e.NewValue;
             target.OnDesignerCanvasChanged(oldDesignerCanvas, newDesignerCanvas);
         }
 
@@ -69,7 +82,7 @@ namespace AIStudio.Wpf.DiagramDesigner
 
         #endregion
 
-        public static readonly DependencyProperty ZoomValueProperty = 
+        public static readonly DependencyProperty ZoomValueProperty =
             DependencyProperty.Register(nameof(ZoomValue), typeof(double), typeof(ZoomBox), new UIPropertyMetadata(1d));
         public double ZoomValue
         {
@@ -94,6 +107,8 @@ namespace AIStudio.Wpf.DiagramDesigner
 
             DesignerCanvas = VisualHelper.FindChild<DesignerCanvas>(this.ScrollViewer);
 
+            diagramControl = VisualHelper.FindChild<DiagramControl>(this.ScrollViewer);
+
             this.zoomThumb = Template.FindName("PART_ZoomThumb", this) as Thumb;
             if (this.zoomThumb == null)
                 throw new Exception("PART_ZoomThumb template is missing!");
@@ -148,7 +163,7 @@ namespace AIStudio.Wpf.DiagramDesigner
         private void DesignerCanvas_MouseWheel(object sender, EventArgs e)
         {
             MouseWheelEventArgs wheel = (MouseWheelEventArgs)e;
-           
+
             //divide the value by 10 so that it is more smooth
             double value = Math.Max(0, wheel.Delta / 10);
             value = Math.Min(wheel.Delta, 10);
@@ -157,8 +172,9 @@ namespace AIStudio.Wpf.DiagramDesigner
 
         private void InvalidateScale(out double scale, out double xOffset, out double yOffset)
         {
-            double w = DesignerCanvas.ActualWidth * ZoomValue;
-            double h = DesignerCanvas.ActualHeight * ZoomValue;
+            Vector vector = System.Windows.Media.VisualTreeHelper.GetOffset(diagramControl);
+            double w = DesignerCanvas.ActualWidth * ZoomValue + vector.X * 2;
+            double h = DesignerCanvas.ActualHeight * ZoomValue + vector.Y * 2;
 
             // zoom canvas size
             double x = this.zoomCanvas.ActualWidth;

AIStudio.Wpf.Mind/ViewModels/MindNode.cs

@@ -98,10 +98,10 @@ namespace AIStudio.Wpf.Mind.ViewModels
             get; set;
         }
 
-        public RectangleBase GetChildRectangle()
-        {
-            //Children.Select(p => p.Size)
-        }
+        //public RectangleBase GetChildRectangle()
+        //{
+        //    //Children.Select(p => p.Size)
+        //}
     }
 
     public class MindLevel2Node : MindNode

Directory.Build.Props

@@ -1,7 +1,7 @@
 <Project>
   <!-- Project properties -->
   <PropertyGroup>
-    <TargetFrameworks>netcoreapp3.1;net5.0-windows</TargetFrameworks>
+    <TargetFrameworks>net461;netcoreapp3.1;net5.0-windows</TargetFrameworks>
   </PropertyGroup>
 
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|AnyCPU'">