Object graph - added simple zoom slider.

src/AddIns/Debugger/Debugger.AddIn/Debugger.AddIn.csproj

@@ -245,7 +245,7 @@
     <Compile Include="Visualizers\Graph\Layout\SplineRouting\RouteGraph\RouteGraph.cs" />
     <Compile Include="Visualizers\Graph\Layout\SplineRouting\RouteGraph\RouteGraphEdge.cs" />
     <Compile Include="Visualizers\Graph\Layout\SplineRouting\RouteGraph\RouteVertex.cs" />
-    <Compile Include="Visualizers\Graph\Layout\SplineRouting\ShortestPath\AStarShortestPathFinder.cs" />
+    <Compile Include="Visualizers\Graph\Layout\SplineRouting\ShortestPath\DijkstraShortestPathFinder.cs" />
     <Compile Include="Visualizers\Graph\Layout\TreeModel\ContentNode.cs" />
     <Compile Include="Visualizers\Graph\Layout\TreeModel\ContentNodeEventArgs.cs" />
     <Compile Include="Visualizers\Graph\Layout\TreeModel\ContentPropertyNode.cs" />

src/AddIns/Debugger/Debugger.AddIn/Visualizers/Graph/Drawing/PositionedGraphNodeControl.xaml.cs

@@ -60,43 +60,6 @@ namespace Debugger.AddIn.Visualizers.Graph.Drawing
 				this.items = GetInitialItems(this.root);
 				// data virtualization, ContentPropertyNode implements IEvaluate
 				this.listView.ItemsSource = new VirtualizingObservableCollection<ContentNode>(this.items);
-				
-				//AutoSizeColumns();
-				
-				/*DispatcherTimer t = new DispatcherTimer();
-				t.Interval = TimeSpan.FromMilliseconds(1000);
-				t.Start();
-				t.Tick += (s, ee) => { AutoSizeColumns(); t.Stop(); };*/
-			}
-		}
-		
-		public void AutoSizeColumns()
-		{
-			//listView.UpdateLayout();
-			//listView.Measure(new Size(800, 800));
-			//double sum = 0;
-			GridView gv = listView.View as GridView;
-			if (gv != null)
-			{
-				foreach (var c in gv.Columns)
-				{
-					//var header = c.Header as GridViewColumnHeader;
-					// Code below was found in GridViewColumnHeader.OnGripperDoubleClicked() event handler (using Reflector)
-					// i.e. it is the same code that is executed when the gripper is double clicked
-					//var uw = c.GetType().GetMethod("UpdateActualWidth", BindingFlags.Instance | BindingFlags.InvokeMethod | BindingFlags.NonPublic);
-					//uw.Invoke(c, new object[] { });
-					//if (double.IsNaN(c.Width))
-					{
-						c.Width = c.ActualWidth;
-					}
-					c.Width = double.NaN;
-
-					/*var dw = c.GetType().GetProperty("DesiredWidth", BindingFlags.Instance | BindingFlags.InvokeMethod | BindingFlags.NonPublic);
-					double desired = (double)dw.GetValue(c, null);
-					c.Width = c.ActualWidth;	// ActualWidth is not correct until GridViewRowPresenter gets measured
-					c.Width = double.NaN;
-					sum += c.Width;*/
-				}
 			}
 		}
 		
@@ -154,7 +117,6 @@ namespace Debugger.AddIn.Visualizers.Graph.Drawing
 			}
 			
 			PositionedNodeProperty property = clickedNode.Property;
-			//property.IsPropertyExpanded = !property.IsPropertyExpanded;  // done by databinding
 			clickedButton.Content = property.IsPropertyExpanded ? "-" : "+";
 			
 			if (property.IsPropertyExpanded)
@@ -172,7 +134,6 @@ namespace Debugger.AddIn.Visualizers.Graph.Drawing
 			var clickedButton = (ToggleButton)e.Source;
 			var clickedNode = (ContentNode)(clickedButton).DataContext;
 			int clickedIndex = this.items.IndexOf(clickedNode);
-			//clickedNode.IsExpanded = !clickedNode.IsExpanded;		// done by data binding
 			clickedButton.Content = clickedNode.IsExpanded ? "-" : "+";	// could be done by a converter
 
 			if (clickedNode.IsExpanded)
@@ -184,7 +145,6 @@ namespace Debugger.AddIn.Visualizers.Graph.Drawing
 					this.items.Insert(clickedIndex + i, childNode);
 					i++;
 				}
-				// insertChildren(clickedNode, this.view, clickedIndex); // TODO
 				OnContentNodeExpanded(clickedNode);
 			}
 			else
@@ -199,21 +159,6 @@ namespace Debugger.AddIn.Visualizers.Graph.Drawing
 			}
 			
 			CalculateWidthHeight();
-			
-			//AutoSizeColumns();
-
-			// set to Auto again to resize columns
-			/*var colName = (this.listView.View as GridView).Columns[0];
-			var colValue = (this.listView.View as GridView).Columns[1];
-			colName.Width = 300;
-			colName.Width = double.NaN;
-			colValue.Width = 300;
-			colValue.Width = double.NaN;
-			//this.view.Insert(0, new ContentNode());
-			//this.view.RemoveAt(0);
-			this.listView.UpdateLayout();
-			this.listView.Width = colName.ActualWidth + colValue.ActualWidth + 30;
-			this.listView.Width = double.NaN;*/
 		}
 		
 		ObservableCollection<ContentNode> GetInitialItems(ContentNode root)

src/AddIns/Debugger/Debugger.AddIn/Visualizers/Graph/Layout/SplineRouting/RouteGraph/RouteGraph.cs

@@ -15,7 +15,7 @@ namespace Debugger.AddIn.Visualizers.Graph.SplineRouting
 	{
 		static readonly double boxPadding = 15;
 		//static readonly double boxSafetyMargin = 5;	// inflate boxes for collision testing
-		static readonly double multiEdgeGap = 10;
+		static readonly double multiEdgeGap = 15;
 		
 		List<IRect> boxes = new List<IRect>();
 		public List<IRect> Boxes {
@@ -27,11 +27,11 @@ namespace Debugger.AddIn.Visualizers.Graph.SplineRouting
 			get { return vertices; }
 		}
 		
-		AStarShortestPathFinder pathFinder;
+		DijkstraShortestPathFinder pathFinder;
 		
 		public RouteGraph()
 		{
-			pathFinder = new AStarShortestPathFinder(this);
+			pathFinder = new DijkstraShortestPathFinder(this);
 		}
 		
 		public static RouteGraph InitializeVertices(IEnumerable<IRect> nodes, IEnumerable<IEdge> edges)
@@ -104,7 +104,8 @@ namespace Debugger.AddIn.Visualizers.Graph.SplineRouting
 		{
 			if (edgeStart == null || edgeEnd == null) {
 				// should not happen
-				return;
+				throw new System.Exception("edgeStart is null");
+				//return;
 			}
 			var startPoint = new RouteVertex(edgeStart.Value.X, edgeStart.Value.Y);
 			startPoint.IsEdgeEndpoint = true;

src/AddIns/Debugger/Debugger.AddIn/Visualizers/Graph/Layout/SplineRouting/ShortestPath/DijkstraShortestPathFinder.cs

@@ -10,11 +10,11 @@ namespace Debugger.AddIn.Visualizers.Graph.SplineRouting
 	/// <summary>
 	/// Description of AStarShortestPathFinder.
 	/// </summary>
-	public class AStarShortestPathFinder
+	public class DijkstraShortestPathFinder
 	{
 		RouteGraph graph;
 		
-		public AStarShortestPathFinder(RouteGraph routeGraph)
+		public DijkstraShortestPathFinder(RouteGraph routeGraph)
 		{
 			this.graph = routeGraph;
 		}

src/AddIns/Debugger/Debugger.AddIn/Visualizers/Graph/Layout/Tree/TreeLayout.cs

@@ -14,8 +14,11 @@ namespace Debugger.AddIn.Visualizers.Graph.Layout
 	/// </summary>
 	public class TreeLayout
 	{
-		private static readonly double NodeMarginH = 30;
-		private static readonly double NodeMarginV = 30;
+		static readonly double NodeMarginH = 30;
+		static readonly double NodeMarginV = 30;
+		static readonly double MarginTop = 0;
+		static readonly double MarginBottom = 0;
+		
 		
 		GraphEdgeRouter edgeRouter = new GraphEdgeRouter();
 		/// <summary>
@@ -81,7 +84,7 @@ namespace Debugger.AddIn.Visualizers.Graph.Layout
 			// first layout pass
 			CalculateSubtreeSizes(positionedGraph.Root, seenNodes, treeEdges);
 			// second layout pass
-			CalculateNodePosRecursive(positionedGraph.Root, treeEdges, 0, 0);
+			CalculateNodePosRecursive(positionedGraph.Root, treeEdges, MarginTop, MarginBottom);
 		}
 		
 		// determines which edges are tree edges, and calculates subtree size for each node

src/AddIns/Debugger/Debugger.AddIn/Visualizers/Graph/ObjectGraphControl.xaml

@@ -27,7 +27,9 @@
                     <TextBox Name="txtExpression" VerticalAlignment="Center" Width="100"></TextBox>
                     <Button Click="Inspect_Button_Click">Inspect</Button>
             		  <TextBlock Margin="12 0 6 0" VerticalAlignment="Center">Layout:</TextBlock>
-                    <ComboBox Name="cmbLayoutDirection" Width="150" ItemsSource="{Binding Path=EnumValues}" SelectedValue="{Binding Path=SelectedEnumValue}" SelectedValuePath="EnumValue" DisplayMemberPath="DisplayValue"></ComboBox>
+                    <ComboBox Name="cmbLayoutDirection" Width="120" ItemsSource="{Binding Path=EnumValues}" SelectedValue="{Binding Path=SelectedEnumValue}" SelectedValuePath="EnumValue" DisplayMemberPath="DisplayValue"></ComboBox>
+                	<TextBlock Margin="12 0 6 0" VerticalAlignment="Center">Zoom:</TextBlock>
+            		<Slider x:Name="zoomSlider" Width="100" Minimum="0.5" Maximum="1" Value="1"/>
                 </StackPanel>
         		<StackPanel Orientation="Horizontal" Name="pnlError" Visibility="Collapsed" Margin="0 6 0 0">
                     <TextBlock Margin="0 0 4 0" Name="lblError" FontStyle="Italic">Error: </TextBlock>
@@ -35,16 +37,14 @@
                 </StackPanel>
 				</StackPanel>
             </Border>
-            
-            <Border Margin="3" Padding="3">
-                <StackPanel Orientation="Horizontal">
-                    
-                </StackPanel>
-            </Border>
         </StackPanel>
 
     	<controls:DragScrollViewer x:Name="scroller" Margin="0 4 0 0" Grid.Row="1" Grid.Column="0" HorizontalScrollBarVisibility="Auto" VerticalScrollBarVisibility="Auto">
        		<Canvas HorizontalAlignment="Left" VerticalAlignment="Top" Name="canvas" Margin="4">
+    			<Canvas.LayoutTransform>
+		            <ScaleTransform ScaleX="{Binding Path=Value, ElementName=zoomSlider}"
+		                            ScaleY="{Binding Path=Value, ElementName=zoomSlider}"/>
+		        </Canvas.LayoutTransform>
 	    	</Canvas>
 		</controls:DragScrollViewer>
     </Grid>