Debugger tooltips:

- fixed tooltip position on non-default DPI
 - tooltip is aligned to line bottom

git-svn-id: svn://svn.sharpdevelop.net/sharpdevelop/trunk@4732 1ccf3a8d-04fe-1044-b7c0-cef0b8235c61

src/AddIns/DisplayBindings/AvalonEdit.AddIn/Src/CodeEditor.cs

@@ -375,18 +375,25 @@ namespace ICSharpCode.AvalonEdit.AddIn
 			popup.VerticalOffset = popupPosition.Y;
 		}
 		
+		/// <summary> Returns Popup position based on mouse position, in device independent units </summary>
 		Point getPopupPosition(TextEditor textEditor, MouseEventArgs mouseArgs)
 		{
 			Point mousePos = mouseArgs.GetPosition(textEditor);
-			return textEditor.PointToScreen(mousePos + new Vector(-4, 6));
-			// attempt to align Popup with line bottom
-			/*TextViewPosition? logicalPos = textEditor.GetPositionFromPoint(mousePos);
+			Point positionInPixels;
+			// align Popup with line bottom
+			TextViewPosition? logicalPos = textEditor.GetPositionFromPoint(mousePos);
 			if (logicalPos.HasValue) {
-				return textEditor.TextArea.TextView.GetVisualPosition(logicalPos.Value, VisualYPosition.LineBottom);
+				var textView = textEditor.TextArea.TextView;
+				positionInPixels = 
+					textView.PointToScreen(
+						textView.GetVisualPosition(logicalPos.Value, VisualYPosition.LineBottom) - textView.ScrollOffset);
+				positionInPixels.X -= 4;
 			}
 			else {
-				return popupPos;
-			}*/
+				positionInPixels = textEditor.PointToScreen(mousePos + new Vector(-4, 6));
+			}
+			/ use device independent units, because Popup Left/Top are in independent units
+			return positionInPixels.TransformFromDevice(textEditor);
 		}
 		
 		Popup createPopup()

src/Libraries/AvalonEdit/ICSharpCode.AvalonEdit/Utils/ExtensionMethods.cs

@@ -156,6 +156,18 @@ namespace ICSharpCode.AvalonEdit.Utils
 			Matrix matrix = PresentationSource.FromVisual(visual).CompositionTarget.TransformFromDevice;
 			return new Size(size.Width * matrix.M11, size.Height * matrix.M22);
 		}
+		
+		public static Point TransformToDevice(this Point point, Visual visual)
+		{
+			Matrix matrix = PresentationSource.FromVisual(visual).CompositionTarget.TransformToDevice;
+			return new Point(point.X * matrix.M11, point.Y * matrix.M22);
+		}
+		
+		public static Point TransformFromDevice(this Point point, Visual visual)
+		{
+			Matrix matrix = PresentationSource.FromVisual(visual).CompositionTarget.TransformFromDevice;
+			return new Point(point.X * matrix.M11, point.Y * matrix.M22);
+		}
 		#endregion
 		
 		#region System.Drawing <-> WPF conversions

src/Main/Base/Project/Src/Services/Debugger/Tooltips/DebuggerTooltipControl.xaml.cs

@@ -165,7 +165,8 @@ namespace ICSharpCode.SharpDevelop.Debugging
 		{
 			var clickedButton = (ToggleButton)e.OriginalSource;
 			var clickedNode = (ITreeNode)clickedButton.DataContext;
-			Point buttonPos = clickedButton.PointToScreen(new Point(0, 0));
+			// use device independent units, because child popup Left/Top are in independent units 
+			Point buttonPos = clickedButton.PointToScreen(new Point(0, 0)).TransformFromDevice(clickedButton);
 
 			if (clickedButton.IsChecked.GetValueOrDefault(false))
 			{

src/Main/Base/Project/Src/Util/ExtensionMethods.cs

@@ -14,6 +14,7 @@ using System.Text;
 using System.Threading;
 using System.Windows;
 using System.Windows.Controls;
+using System.Windows.Media;
 using System.Windows.Documents;
 using System.Windows.Forms;
 
@@ -252,6 +253,44 @@ namespace ICSharpCode.SharpDevelop
 		}
 		#endregion
 		
+		#region DPI independence
+		public static Rect TransformToDevice(this Rect rect, Visual visual)
+		{
+			Matrix matrix = PresentationSource.FromVisual(visual).CompositionTarget.TransformToDevice;
+			return Rect.Transform(rect, matrix);
+		}
+		
+		public static Rect TransformFromDevice(this Rect rect, Visual visual)
+		{
+			Matrix matrix = PresentationSource.FromVisual(visual).CompositionTarget.TransformFromDevice;
+			return Rect.Transform(rect, matrix);
+		}
+		
+		public static Size TransformToDevice(this Size size, Visual visual)
+		{
+			Matrix matrix = PresentationSource.FromVisual(visual).CompositionTarget.TransformToDevice;
+			return new Size(size.Width * matrix.M11, size.Height * matrix.M22);
+		}
+		
+		public static Size TransformFromDevice(this Size size, Visual visual)
+		{
+			Matrix matrix = PresentationSource.FromVisual(visual).CompositionTarget.TransformFromDevice;
+			return new Size(size.Width * matrix.M11, size.Height * matrix.M22);
+		}
+		
+		public static Point TransformToDevice(this Point point, Visual visual)
+		{
+			Matrix matrix = PresentationSource.FromVisual(visual).CompositionTarget.TransformToDevice;
+			return new Point(point.X * matrix.M11, point.Y * matrix.M22);
+		}
+		
+		public static Point TransformFromDevice(this Point point, Visual visual)
+		{
+			Matrix matrix = PresentationSource.FromVisual(visual).CompositionTarget.TransformFromDevice;
+			return new Point(point.X * matrix.M11, point.Y * matrix.M22);
+		}
+		#endregion
+		
 		public static string Replace(this string original, string pattern, string replacement, StringComparison comparisonType)
 		{
 			if (original == null)