Implementation of MULTILEADER and MULTILEADERSTYLE

ACadSharp.Tests/IO/MultiLeaderTests.cs

@@ -0,0 +1,142 @@
+using ACadSharp.Entities;
+using ACadSharp.IO;
+using System.Collections.Generic;
+using System.IO;
+using Xunit;
+using Xunit.Abstractions;
+
+namespace ACadSharp.Tests.IO
+{
+	public class MultiLeaderTests : IOTestsBase
+	{
+		public MultiLeaderTests(ITestOutputHelper output) : base(output)
+		{
+		}
+
+		[Fact]
+		public void MultiLeaderDwg()
+		{
+			string inPath = Path.Combine($"{_samplesFolder}", "multileader", "sample_MLeader_AC1032.dwg");
+			CadDocument doc = DwgReader.Read(inPath);
+
+			// There are 14 multileaders in DWG file
+			Assert.Equal(14, doc.Entities.Count);
+
+			List<Entity> entities = new List<Entity>(doc.Entities);
+
+			MultiLeader multiLeader;
+
+			multiLeader = (MultiLeader)entities[0];
+			Assert.Equal(@"MULTILEADER TEST", multiLeader.ContextData.TextLabel);
+			Assert.Equal(TextAttachmentPointType.Left, multiLeader.TextAttachmentPoint);
+			Assert.Equal(TextAttachmentType.MiddleOfTopLine, multiLeader.TextLeftAttachment);
+			Assert.False(multiLeader.TextFrame);
+			Assert.Equal(8, multiLeader.LandingDistance);
+			Assert.Equal(TextAttachmentDirectionType.Horizontal, multiLeader.TextAttachmentDirection);
+
+			multiLeader = (MultiLeader)entities[1];
+			Assert.Equal(@"MULTILEADER\PTEST\P123", multiLeader.ContextData.TextLabel);
+			Assert.Equal(TextAttachmentPointType.Left, multiLeader.TextAttachmentPoint);
+			Assert.Equal(TextAttachmentType.MiddleOfTopLine, multiLeader.TextLeftAttachment);
+			Assert.False(multiLeader.TextFrame);
+			Assert.Equal(8, multiLeader.LandingDistance);
+			Assert.Equal(TextAttachmentDirectionType.Horizontal, multiLeader.TextAttachmentDirection);
+
+			multiLeader = (MultiLeader)entities[2];
+			Assert.Equal(@"MULTILEADER\PTEST\P123", multiLeader.ContextData.TextLabel);
+			Assert.Equal(TextAttachmentPointType.Center, multiLeader.TextAttachmentPoint);
+			Assert.Equal(TextAttachmentType.MiddleOfTopLine, multiLeader.TextLeftAttachment);
+			Assert.False(multiLeader.TextFrame);
+			Assert.Equal(8, multiLeader.LandingDistance);
+			Assert.Equal(TextAttachmentDirectionType.Horizontal, multiLeader.TextAttachmentDirection);
+
+			multiLeader = (MultiLeader)entities[3];
+			Assert.Equal(@"MULTILEADER\PTEST\P123", multiLeader.ContextData.TextLabel);
+			Assert.Equal(TextAttachmentPointType.Right, multiLeader.TextAttachmentPoint);
+			Assert.Equal(TextAttachmentType.MiddleOfTopLine, multiLeader.TextLeftAttachment);
+			Assert.False(multiLeader.TextFrame);
+			Assert.Equal(8, multiLeader.LandingDistance);
+			Assert.Equal(TextAttachmentDirectionType.Horizontal, multiLeader.TextAttachmentDirection);
+
+			multiLeader = (MultiLeader)entities[4];
+			Assert.Equal(@"MULTILEADER\PTEST\P123", multiLeader.ContextData.TextLabel);
+			Assert.Equal(TextAttachmentPointType.Right, multiLeader.TextAttachmentPoint);
+			Assert.Equal(TextAttachmentType.MiddleOfTopLine, multiLeader.TextLeftAttachment);
+			Assert.True(multiLeader.TextFrame);
+			Assert.Equal(8, multiLeader.LandingDistance);
+			Assert.Equal(TextAttachmentDirectionType.Horizontal, multiLeader.TextAttachmentDirection);
+
+			multiLeader = (MultiLeader)entities[5];
+			Assert.Equal(@"MULTILEADER\PTEST\P123", multiLeader.ContextData.TextLabel);
+			Assert.Equal(TextAttachmentPointType.Right, multiLeader.TextAttachmentPoint);
+			Assert.Equal(TextAttachmentType.MiddleOfTopLine, multiLeader.TextLeftAttachment);
+			Assert.True(multiLeader.TextFrame);
+			Assert.Equal(8, multiLeader.LandingDistance);
+			Assert.Equal(TextAttachmentDirectionType.Horizontal, multiLeader.TextAttachmentDirection);
+
+			multiLeader = (MultiLeader)entities[6];
+			Assert.Equal(@"MULTILEADER\PTEST\P123", multiLeader.ContextData.TextLabel);
+			Assert.Equal(TextAttachmentPointType.Right, multiLeader.TextAttachmentPoint);
+			Assert.Equal(TextAttachmentType.MiddleOfTopLine, multiLeader.TextLeftAttachment);
+			Assert.True(multiLeader.TextFrame);
+			Assert.Equal(16, multiLeader.LandingDistance);
+			Assert.Equal(TextAttachmentDirectionType.Horizontal, multiLeader.TextAttachmentDirection);
+
+			multiLeader = (MultiLeader)entities[7];
+			Assert.Equal(@"MULTILEADER\PTEST\P123", multiLeader.ContextData.TextLabel);
+			Assert.Equal(TextAttachmentPointType.Right, multiLeader.TextAttachmentPoint);
+			Assert.Equal(TextAttachmentType.MiddleOfTopLine, multiLeader.TextLeftAttachment);
+			Assert.True(multiLeader.TextFrame);
+			Assert.Equal(16, multiLeader.LandingDistance);
+			Assert.Equal(TextAttachmentDirectionType.Horizontal, multiLeader.TextAttachmentDirection);
+
+			multiLeader = (MultiLeader)entities[8];
+			Assert.Equal(@"MULTILEADER\PTEST\P123", multiLeader.ContextData.TextLabel);
+			Assert.Equal(TextAttachmentPointType.Right, multiLeader.TextAttachmentPoint);
+			Assert.Equal(TextAttachmentType.MiddleOfTopLine, multiLeader.TextLeftAttachment);
+			Assert.True(multiLeader.TextFrame);
+			Assert.Equal(16, multiLeader.LandingDistance);
+			Assert.Equal(TextAttachmentDirectionType.Horizontal, multiLeader.TextAttachmentDirection);
+
+			multiLeader = (MultiLeader)entities[9];
+			Assert.Equal(@"MULTILEADER\PTEST\P123", multiLeader.ContextData.TextLabel);
+			Assert.Equal(TextAttachmentPointType.Right, multiLeader.TextAttachmentPoint);
+			Assert.Equal(TextAttachmentType.MiddleOfTopLine, multiLeader.TextLeftAttachment);
+			Assert.True(multiLeader.TextFrame);
+			Assert.Equal(16, multiLeader.LandingDistance);
+			Assert.Equal(TextAttachmentDirectionType.Horizontal, multiLeader.TextAttachmentDirection);
+
+			multiLeader = (MultiLeader)entities[10];
+			Assert.Equal(@"MULTILEADER\PTEST\P123", multiLeader.ContextData.TextLabel);
+			Assert.Equal(TextAttachmentPointType.Right, multiLeader.TextAttachmentPoint);
+			Assert.Equal(TextAttachmentType.MiddleOfTopLine, multiLeader.TextLeftAttachment);
+			Assert.True(multiLeader.TextFrame);
+			Assert.Equal(16, multiLeader.LandingDistance);
+			Assert.Equal(TextAttachmentDirectionType.Horizontal, multiLeader.TextAttachmentDirection);
+
+			multiLeader = (MultiLeader)entities[11];
+			Assert.Equal(@"MULTILEADER TEST", multiLeader.ContextData.TextLabel);
+			Assert.Equal(TextAttachmentPointType.Left, multiLeader.TextAttachmentPoint);
+			Assert.Equal(TextAttachmentType.BottomLine, multiLeader.TextLeftAttachment);
+			Assert.False(multiLeader.TextFrame);
+			Assert.Equal(8, multiLeader.LandingDistance);
+			Assert.Equal(TextAttachmentDirectionType.Horizontal, multiLeader.TextAttachmentDirection);
+
+			multiLeader = (MultiLeader)entities[12];
+			Assert.Equal(@"MULTILEADER TEST", multiLeader.ContextData.TextLabel);
+			Assert.Equal(TextAttachmentPointType.Left, multiLeader.TextAttachmentPoint);
+			Assert.Equal(TextAttachmentType.TopOfTopLine, multiLeader.TextLeftAttachment);
+			Assert.False(multiLeader.TextFrame);
+			Assert.Equal(8, multiLeader.LandingDistance);
+			Assert.Equal(TextAttachmentDirectionType.Horizontal, multiLeader.TextAttachmentDirection);
+
+			multiLeader = (MultiLeader)entities[13];
+			Assert.Equal(@"MULTILEADER TEST", multiLeader.ContextData.TextLabel);
+			Assert.Equal(TextAttachmentPointType.Left, multiLeader.TextAttachmentPoint);
+			Assert.Equal(TextAttachmentType.TopOfTopLine, multiLeader.TextLeftAttachment);
+			Assert.False(multiLeader.TextFrame);
+			Assert.Equal(8, multiLeader.LandingDistance);
+			Assert.Equal(TextAttachmentDirectionType.Vertical, multiLeader.TextAttachmentDirection);
+		}
+	}
+}

ACadSharp/AttachmentType.cs

@@ -0,0 +1,9 @@
+namespace ACadSharp {
+
+	public enum AttachmentType : short {
+
+		CenterExtents = 0,
+
+		InsertionPoint = 1
+	}
+}

ACadSharp/DxfFileToken.cs

@@ -119,6 +119,7 @@ public static class DxfFileToken
 		public const string ObjectScale = "SCALE";
 		public const string ObjectSortEntsTable = "SORTENTSTABLE";
 		public const string ObjectXRecord = "XRECORD";
+		public const string ObjectMLeaderContextData = "CONTEXT_DATA";
 
 		#endregion
 	}

ACadSharp/DxfSubclassMarker.cs

@@ -43,6 +43,9 @@ public static class DxfSubclassMarker
 		public const string Vertex = "AcDbVertex";
 		public const string Polyline = "AcDb2dPolyline";
 		public const string Leader = "AcDbLeader";
+		public const string MLeader = "AcDbMLeader";
+		public const string MLeaderStyle = "AcDbMLeaderStyle";
+		public const string MultiLeaderAnnotContext = "AcDbMultiLeaderAnnotContext";
 		public const string LwPolyline = "AcDbPolyline";
 		public const string PolylineVertex = "AcDb2dVertex";
 		public const string Polyline3d = "AcDb3dPolyline";