add extended line cap configuration

Pilz.UI/PaintingControl/ArrowLineCapProps.vb

@@ -0,0 +1,15 @@
+Imports System.Drawing
+Imports System.Drawing.Drawing2D
+
+Public Class ArrowLineCapProps
+    Inherits LineCapProps
+
+    Public Property Size As New Size(10, 10)
+    Public Property IsFilles As Boolean = True
+
+    Friend Overrides Function Configure() As LineCapConfigurationArgs
+        Dim cap As New AdjustableArrowCap(Size.Width, Size.Height, IsFilles)
+        Return New LineCapConfigurationArgs(cap)
+    End Function
+
+End Class

Pilz.UI/PaintingControl/DefaultDrawMethodes.vb

@@ -113,10 +113,21 @@ Public Class DefaultDrawMethodes
     Public Shared Sub DrawLine(e As PaintingObjectPaintEventArgs)
         Dim obj As PaintingObject = e.PaintingObject
         Dim p2 As New Pen(obj.OutlineColor, obj.OutlineThicknes) With {
-            .DashStyle = obj.OutlineDashStyle,
-            .StartCap = obj.LineStartCap,
-            .EndCap = obj.LineEndCap
+            .DashStyle = obj.OutlineDashStyle
         }
+
+        If obj.LineStartCap IsNot Nothing Then
+            Dim args As LineCapConfigurationArgs = obj.LineStartCap.Configure
+            p2.StartCap = args.LineCap
+            p2.CustomStartCap = args.CustomLineCap
+        End If
+
+        If obj.LineEndCap IsNot Nothing Then
+            Dim args As LineCapConfigurationArgs = obj.LineEndCap.Configure
+            p2.EndCap = args.LineCap
+            p2.CustomEndCap = args.CustomLineCap
+        End If
+
         p2.Alignment = PenAlignment.Center
         Dim no As PointF = New PointF(e.X, e.Y)
         e.Graphics.DrawLine(p2, no, no + obj.Size)

Pilz.UI/PaintingControl/DefaultLineCapProps.vb

@@ -0,0 +1,13 @@
+Imports System.Drawing.Drawing2D
+
+Public Class DefaultLineCapProps
+    Inherits LineCapProps
+
+    Public Property LineCap As LineCap = LineCap.Flat
+    Public Property CustomLineCap As CustomLineCap = Nothing
+
+    Friend Overrides Function Configure() As LineCapConfigurationArgs
+        Return New LineCapConfigurationArgs(LineCap, CustomLineCap)
+    End Function
+
+End Class

Pilz.UI/PaintingControl/LineCapConfigurationArgs.vb

@@ -0,0 +1,21 @@
+Imports System.Drawing.Drawing2D
+
+Public Class LineCapConfigurationArgs
+
+    Public ReadOnly Property LineCap As LineCap
+    Public ReadOnly Property CustomLineCap As CustomLineCap
+
+    Public Sub New(lineCap As LineCap)
+        Me.New(lineCap, Nothing)
+    End Sub
+
+    Public Sub New(customLineCap As CustomLineCap)
+        Me.New(Nothing, customLineCap)
+    End Sub
+
+    Public Sub New(lineCap As LineCap, customLineCap As CustomLineCap)
+        Me.LineCap = lineCap
+        Me.CustomLineCap = customLineCap
+    End Sub
+
+End Class

Pilz.UI/PaintingControl/LineCapProps.vb

@@ -0,0 +1,7 @@
+Imports System.Drawing
+
+Public MustInherit Class LineCapProps
+
+    Friend MustOverride Function Configure() As LineCapConfigurationArgs
+
+End Class

Pilz.UI/PaintingControl/PaintingObject.vb

@@ -19,8 +19,8 @@ Imports Newtonsoft.Json
     Public Property OutlineColor As Color = Color.DarkBlue
     Public Property OutlineThicknes As Single = 1
     Public Property OutlineDashStyle As DashStyle = DashStyle.Solid
-    Public Property LineStartCap As LineCap = LineCap.Flat
-    Public Property LineEndCap As LineCap = LineCap.Flat
+    Public Property LineStartCap As LineCapProps = Nothing
+    Public Property LineEndCap As LineCapProps = Nothing
     <JsonProperty>
     Private _Text As String = ""
     Public Property TextPosition As TextPosition = TextPosition.FullCenter