[Debugger] BezierPathPreview and UI/NSBezierPath converters

1 files changed, 124 insertions, 0 deletions

diff --git a/main/src/addins/MonoDevelop.Debugger/MonoDevelop.Debugger.Converters/BezierPathConverter.cs b/main/src/addins/MonoDevelop.Debugger/MonoDevelop.Debugger.Converters/BezierPathConverter.cs
new file mode 100644
index 0000000000..2a57cce0b7
--- /dev/null
+++ b/main/src/addins/MonoDevelop.Debugger/MonoDevelop.Debugger.Converters/BezierPathConverter.cs
@@ -0,0 +1,124 @@
+//
+// BezierPathConverter.cs
+//
+// Author:
+//       David Karlaš <david.karlas@xamarin.com>
+//
+// Copyright (c) 2014 Xamarin, Inc (http://www.xamarin.com)
+//
+// 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 Mono.Debugging.Client;
+using System.Collections.Generic;
+
+namespace MonoDevelop.Debugger.Converters
+{
+	public enum BezierPathElementType
+	{
+		MoveTo,
+		LineTo,
+		CurveTo,
+		ClosePath
+	}
+
+	public struct BezierPathElement
+	{
+		public BezierPathElementType ElementType;
+		public Xwt.Point Point1;
+		public Xwt.Point Point2;
+		public Xwt.Point Point3;
+	}
+
+	class BezierPathConverter : DebugValueConverter<List<BezierPathElement>>
+	{
+		#region implemented abstract members of DebugValueConverter
+
+		public override bool CanGetValue (ObjectValue val)
+		{
+			return val.TypeName.EndsWith ("AppKit.NSBezierPath") ||
+			val.TypeName.EndsWith ("UIKit.UIBezierPath");
+		}
+
+		enum NSBezierPathElement
+		{
+			MoveTo,
+			LineTo,
+			CurveTo,
+			ClosePath
+		}
+
+		public override List<BezierPathElement> GetValue (ObjectValue val)
+		{
+			var ops = DebuggingService.DebuggerSession.EvaluationOptions.Clone ();
+			ops.AllowTargetInvoke = true;
+			var elements = new List<BezierPathElement> ();
+			var rawVal = val.GetRawValue (ops) as RawValue;
+			int elementCount = (int)rawVal.GetMemberValue ("ElementCount");
+			for (int i = 0; i < elementCount; i++) {
+				object[] outArgs;
+				var elementType = rawVal.CallMethod ("ElementAt", out outArgs, i, new System.Drawing.PointF[0]);
+				if (outArgs == null) {
+					//If outArgs are null we are probably on old mono runtime which
+					//doesn't support out arguments
+					return null;
+				}
+				var rawArray = outArgs [1] as RawValueArray;
+				var array = rawArray.GetValues (0, rawArray.Length);
+				switch ((NSBezierPathElement)(long)elementType) {
+				case NSBezierPathElement.MoveTo:
+					elements.Add (new BezierPathElement () {
+						ElementType = BezierPathElementType.MoveTo,
+						Point1 = new Xwt.Point (
+							(float)(array.GetValue (0) as RawValue).GetMemberValue ("X"),
+							(float)(array.GetValue (0) as RawValue).GetMemberValue ("Y"))
+					});
+					break;
+				case NSBezierPathElement.ClosePath:
+					elements.Add (new BezierPathElement () {
+						ElementType = BezierPathElementType.ClosePath
+					});
+					break;
+				case NSBezierPathElement.LineTo:
+					elements.Add (new BezierPathElement () {
+						ElementType = BezierPathElementType.LineTo,
+						Point1 = new Xwt.Point (
+							(float)(array.GetValue (0) as RawValue).GetMemberValue ("X"),
+							(float)(array.GetValue (0) as RawValue).GetMemberValue ("Y"))
+					});
+					break;
+				case NSBezierPathElement.CurveTo:
+					elements.Add (new BezierPathElement () {
+						ElementType = BezierPathElementType.CurveTo,
+						Point1 = new Xwt.Point ((float)(array.GetValue (0) as RawValue).GetMemberValue ("X"),
+							(float)(array.GetValue (0) as RawValue).GetMemberValue ("Y")),
+						Point2 = new Xwt.Point ((float)(array.GetValue (1) as RawValue).GetMemberValue ("X"),
+							(float)(array.GetValue (1) as RawValue).GetMemberValue ("Y")),
+						Point3 = new Xwt.Point ((float)(array.GetValue (2) as RawValue).GetMemberValue ("X"),
+							(float)(array.GetValue (2) as RawValue).GetMemberValue ("Y"))
+					});
+					break;
+				}
+			}
+			return elements;
+		}
+
+		#endregion
+	}
+}
+