Select Items below the current by Pressing Alt Key when Clicking on Control!

src/AddIns/DisplayBindings/WpfDesign/WpfDesign.Designer/Project/DesignPanel.cs

@@ -35,6 +35,10 @@ namespace ICSharpCode.WpfDesign.Designer
 	public sealed class DesignPanel : Decorator, IDesignPanel, INotifyPropertyChanged
 	{
 		#region Hit Testing
+		
+		private List<DependencyObject> hitTestElements = new List<DependencyObject>();
+		private DependencyObject lastElement;
+		
 		/// <summary>
 		/// this element is always hit (unless HitTestVisible is set to false)
 		/// </summary>
@@ -54,7 +58,7 @@ namespace ICSharpCode.WpfDesign.Designer
 		void RunHitTest(Visual reference, Point point, HitTestFilterCallback filterCallback, HitTestResultCallback resultCallback)
 		{
 			VisualTreeHelper.HitTest(reference, filterCallback, resultCallback,
-			                         new PointHitTestParameters(point));
+				new PointHitTestParameters(point));
 		}
 		
 		HitTestFilterBehavior FilterHitTestInvisibleElements(DependencyObject potentialHitTestTarget)
@@ -70,9 +74,10 @@ namespace ICSharpCode.WpfDesign.Designer
 			
 				if (designItem != null && designItem.IsDesignTimeLocked) {
 					return HitTestFilterBehavior.ContinueSkipSelfAndChildren;
+				}			
 			}
 			
-			}
+			hitTestElements.Add(element);
 						
 			return HitTestFilterBehavior.Continue;
 		}
@@ -80,14 +85,17 @@ namespace ICSharpCode.WpfDesign.Designer
 		/// <summary>
 		/// Performs a custom hit testing lookup for the specified mouse event args.
 		/// </summary>
-		public DesignPanelHitTestResult HitTest(Point mousePosition, bool testAdorners, bool testDesignSurface)
+		public DesignPanelHitTestResult HitTest(Point mousePosition, bool testAdorners, bool testDesignSurface, HitTestType hitTestType)
 		{
+			hitTestElements.Clear();
+			
 			DesignPanelHitTestResult result = DesignPanelHitTestResult.NoHit;
 			HitTest(mousePosition, testAdorners, testDesignSurface,
-			        delegate(DesignPanelHitTestResult r) {
-			        	result = r;
-			        	return false;
-			        });
+				delegate(DesignPanelHitTestResult r) {
+					result = r;
+					return false;
+				}, hitTestType);
+			
 			return result;
 		}
 		
@@ -95,7 +103,7 @@ namespace ICSharpCode.WpfDesign.Designer
 		/// Performs a hit test on the design surface, raising <paramref name="callback"/> for each match.
 		/// Hit testing continues while the callback returns true.
 		/// </summary>
-		public void HitTest(Point mousePosition, bool testAdorners, bool testDesignSurface, Predicate<DesignPanelHitTestResult> callback)
+		public void HitTest(Point mousePosition, bool testAdorners, bool testDesignSurface, Predicate<DesignPanelHitTestResult> callback, HitTestType hitTestType)
 		{
 			if (mousePosition.X < 0 || mousePosition.Y < 0 || mousePosition.X > this.RenderSize.Width || mousePosition.Y > this.RenderSize.Height) {
 				return;
@@ -104,6 +112,8 @@ namespace ICSharpCode.WpfDesign.Designer
 			
 			bool continueHitTest = true;
 			
+			hitTestElements.Clear();
+			
 			if (testAdorners) {
 				RunHitTest(
 					_adornerLayer, mousePosition, FilterHitTestInvisibleElements,
@@ -135,6 +145,19 @@ namespace ICSharpCode.WpfDesign.Designer
 							
 							ViewService viewService = _context.Services.View;
 							DependencyObject obj = result.VisualHit;
+							
+							if (hitTestType == HitTestType.ElementSelection)
+							{
+								if (Keyboard.IsKeyDown(Key.LeftAlt))
+								if (lastElement != null && lastElement != _context.RootItem.Component &&
+									hitTestElements.Contains(lastElement))
+								{
+									var idx = hitTestElements.IndexOf(lastElement) - 1;
+									if (idx >= 0)
+										obj = hitTestElements[idx];
+								}
+							}
+							
 							while (obj != null) {
 								if ((customResult.ModelHit = viewService.GetModel(obj)) != null)
 									break;
@@ -143,6 +166,13 @@ namespace ICSharpCode.WpfDesign.Designer
 							if (customResult.ModelHit == null) {
 								customResult.ModelHit = _context.RootItem;
 							}
+							
+							if (hitTestType == HitTestType.ElementSelection)
+							{
+								lastElement = obj;
+							}
+							
+							
 							continueHitTest = callback(customResult);
 							return continueHitTest ? HitTestResultBehavior.Continue : HitTestResultBehavior.Stop;
 						} else {
@@ -223,7 +253,7 @@ namespace ICSharpCode.WpfDesign.Designer
 				}
 			}
 		}
-
+		
 		/// <summary>
 		/// Enables / Disables the Raster Placement
 		/// </summary>
@@ -341,14 +371,14 @@ namespace ICSharpCode.WpfDesign.Designer
 			if (e.Key == Key.Left || e.Key == Key.Right || e.Key == Key.Up || e.Key == Key.Down)
 			{
 				e.Handled = true;
-
+				
 				if (placementOp == null) {
 					dx = 0;
 					dy = 0;
 					placementOp = PlacementOperation.Start(Context.Services.Selection.SelectedItems, PlacementType.Move);
 				}
-
-
+				
+				
 				dx += (e.Key == Key.Left) ? Keyboard.IsKeyDown(Key.LeftShift) ? -10 : -1 : 0;
 				dy += (e.Key == Key.Up) ? Keyboard.IsKeyDown(Key.LeftShift) ? -10 : -1 : 0;
 				dx += (e.Key == Key.Right) ? Keyboard.IsKeyDown(Key.LeftShift) ? 10 : 1 : 0;
@@ -358,18 +388,18 @@ namespace ICSharpCode.WpfDesign.Designer
 					if (!Keyboard.IsKeyDown(Key.LeftCtrl))
 					{
 						info.Bounds = new Rect(info.OriginalBounds.Left + dx,
-						                       info.OriginalBounds.Top + dy,
-						                       info.OriginalBounds.Width,
-						                       info.OriginalBounds.Height);
+							info.OriginalBounds.Top + dy,
+							info.OriginalBounds.Width,
+							info.OriginalBounds.Height);
 					}
 					else
 					{
 						info.Bounds = new Rect(info.OriginalBounds.Left,
-						                       info.OriginalBounds.Top,
-						                       info.OriginalBounds.Width + dx,
-						                       info.OriginalBounds.Height + dy);
+							info.OriginalBounds.Top,
+							info.OriginalBounds.Width + dx,
+							info.OriginalBounds.Height + dy);
 					}
-
+					
 					placementOp.CurrentContainerBehavior.SetPosition(info);
 				}
 			}

src/AddIns/DisplayBindings/WpfDesign/WpfDesign.Designer/Project/Extensions/InPlaceEditorExtension.cs

@@ -159,7 +159,7 @@ namespace ICSharpCode.WpfDesign.Designer.Extensions
 		
 		void MouseDown(object sender,MouseEventArgs e)
 		{
-			result = designPanel.HitTest(e.GetPosition(designPanel), false, true);
+			result = designPanel.HitTest(e.GetPosition(designPanel), false, true, HitTestType.Default);
 			if(result.ModelHit==ExtendedItem && result.VisualHit is TextBlock) {
 				Start = Mouse.GetPosition(null);
 				Current = Start;
@@ -171,7 +171,7 @@ namespace ICSharpCode.WpfDesign.Designer.Extensions
 		void MouseMove(object sender, MouseEventArgs e)
 		{
 			Current += e.GetPosition(null) - Start;
-			result = designPanel.HitTest(e.GetPosition(designPanel), false, true);
+			result = designPanel.HitTest(e.GetPosition(designPanel), false, true, HitTestType.Default);
 			if (result.ModelHit == ExtendedItem && result.VisualHit is TextBlock) {
 				if (numClicks > 0) {
 					if (isMouseDown &&
@@ -190,7 +190,7 @@ namespace ICSharpCode.WpfDesign.Designer.Extensions
 		
 		void MouseUp(object sender,MouseEventArgs e)
 		{
-			result = designPanel.HitTest(e.GetPosition(designPanel), false, true);
+			result = designPanel.HitTest(e.GetPosition(designPanel), false, true, HitTestType.Default);
 			if (result.ModelHit == ExtendedItem && result.VisualHit is TextBlock && numClicks>0){
 				if (!isGettingDragged) {
 					PlaceEditor(result.VisualHit, e);

src/AddIns/DisplayBindings/WpfDesign/WpfDesign.Designer/Project/Services/CreateComponentTool.cs

@@ -86,7 +86,7 @@ namespace ICSharpCode.WpfDesign.Designer.Services
 					if (e.Data.GetData(typeof(CreateComponentTool)) != this) return;
 					// TODO: dropLayer in designPanel
 					designPanel.IsAdornerLayerHitTestVisible = false;
-					DesignPanelHitTestResult result = designPanel.HitTest(p, false, true);
+					DesignPanelHitTestResult result = designPanel.HitTest(p, false, true, HitTestType.Default);
 					
 					if (result.ModelHit != null) {
 						designPanel.Focus();
@@ -180,7 +180,7 @@ namespace ICSharpCode.WpfDesign.Designer.Services
 			if (e.ChangedButton == MouseButton.Left && MouseGestureBase.IsOnlyButtonPressed(e, MouseButton.Left)) {
 				e.Handled = true;
 				IDesignPanel designPanel = (IDesignPanel)sender;
-				DesignPanelHitTestResult result = designPanel.HitTest(e.GetPosition(designPanel), false, true);
+				DesignPanelHitTestResult result = designPanel.HitTest(e.GetPosition(designPanel), false, true, HitTestType.Default);
 				if (result.ModelHit != null) {
 					IPlacementBehavior behavior = result.ModelHit.GetBehavior<IPlacementBehavior>();
 					if (behavior != null) {

src/AddIns/DisplayBindings/WpfDesign/WpfDesign.Designer/Project/Services/MoveLogic.cs

@@ -124,7 +124,7 @@ namespace ICSharpCode.WpfDesign.Designer.Services
 			                    		return true; // continue hit testing
 			                    	result = r;
 			                    	return false; // finish hit testing
-			                    });
+			                    }, HitTestType.Default);
 
 			return result;
 		}

src/AddIns/DisplayBindings/WpfDesign/WpfDesign.Designer/Project/Services/PointerTool.cs

@@ -42,7 +42,7 @@ namespace ICSharpCode.WpfDesign.Designer.Services
 		void OnMouseDown(object sender, MouseButtonEventArgs e)
 		{
 			IDesignPanel designPanel = (IDesignPanel)sender;
-			DesignPanelHitTestResult result = designPanel.HitTest(e.GetPosition(designPanel), false, true);
+			DesignPanelHitTestResult result = designPanel.HitTest(e.GetPosition(designPanel), false, true, HitTestType.ElementSelection);
 			if (result.ModelHit != null) {
 				IHandlePointerToolMouseDown b = result.ModelHit.GetBehavior<IHandlePointerToolMouseDown>();
 				if (b != null) {

src/AddIns/DisplayBindings/WpfDesign/WpfDesign/Project/HitTestType.cs

@@ -0,0 +1,41 @@
+// Copyright (c) 2014 AlphaSierraPapa for the SharpDevelop Team
+// 
+// Permission is hereby granted, free of charge, to any person obtaining a copy of this
+// software and associated documentation files (the "Software"), to deal in the Software
+// without restriction, including without limitation the rights to use, copy, modify, merge,
+// publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons
+// to whom the Software is furnished to do so, subject to the following conditions:
+// 
+// The above copyright notice and this permission notice shall be included in all copies or
+// substantial portions of the Software.
+// 
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
+// PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
+// FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+// DEALINGS IN THE SOFTWARE.
+
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+namespace ICSharpCode.WpfDesign
+{
+	/// <summary>
+	/// 
+	/// </summary>
+	public enum HitTestType
+	{
+		/// <summary>
+		/// 
+		/// </summary>
+		Default,
+		
+		/// <summary>
+		/// 
+		/// </summary>
+		ElementSelection,
+	}
+}

src/AddIns/DisplayBindings/WpfDesign/WpfDesign/Project/Tools.cs

@@ -99,14 +99,14 @@ namespace ICSharpCode.WpfDesign
 		/// <summary>
 		/// Performs a hit test on the design surface.
 		/// </summary>
-		DesignPanelHitTestResult HitTest(Point mousePosition, bool testAdorners, bool testDesignSurface);
-		
+		DesignPanelHitTestResult HitTest(Point mousePosition, bool testAdorners, bool testDesignSurface, HitTestType hitTestType);
+
 		/// <summary>
 		/// Performs a hit test on the design surface, raising <paramref name="callback"/> for each match.
 		/// Hit testing continues while the callback returns true.
 		/// </summary>
-		void HitTest(Point mousePosition, bool testAdorners, bool testDesignSurface, Predicate<DesignPanelHitTestResult> callback);
-		
+		void HitTest(Point mousePosition, bool testAdorners, bool testDesignSurface, Predicate<DesignPanelHitTestResult> callback, HitTestType hitTestType);
+
 		// The following members were missing in <see cref="IInputElement"/>, but
 		// are supported on the DesignPanel:
 		

src/AddIns/DisplayBindings/WpfDesign/WpfDesign/Project/WpfDesign.csproj

@@ -74,6 +74,7 @@
     <Compile Include="Adorners\AdornerProviderClasses.cs" />
     <Compile Include="Adorners\RelativePlacement.cs" />
     <Compile Include="ExtensionMethods.cs" />
+    <Compile Include="HitTestType.cs" />
     <Compile Include="Metadata.cs" />
     <Compile Include="PlacementInformation.cs" />
     <Compile Include="PlacementBehavior.cs" />