DrawViewBalloon: add units there as well

since OriginX/Y depend on DrawView base X/Y

- also adapt the balloon test accordingly

src/Mod/TechDraw/App/DrawViewBalloon.cpp

@@ -128,6 +128,27 @@ void DrawViewBalloon::onDocumentRestored()
 
 }
 
+void DrawViewBalloon::handleChangedPropertyType(Base::XMLReader &reader, const char *TypeName, App::Property *prop)
+// transforms properties that had been changed
+{
+	// also check for changed properties of the base class
+	DrawView::handleChangedPropertyType(reader, TypeName, prop);
+
+	// property OriginX had the App::PropertyFloat and was changed to App::PropertyLength
+	if (prop == &OriginX && strcmp(TypeName, "App::PropertyFloat") == 0) {
+		App::PropertyInteger OriginXProperty;
+		// restore the PropertyInteger to be able to set its value
+		OriginXProperty.Restore(reader);
+		OriginX.setValue(OriginXProperty.getValue());
+	}
+	// property OriginY had the App::PropertyFloat and was changed to App::PropertyLength
+	else if (prop == &OriginY && strcmp(TypeName, "App::PropertyFloat") == 0) {
+		App::PropertyFloat OriginYProperty;
+		OriginYProperty.Restore(reader);
+		OriginY.setValue(OriginYProperty.getValue());
+	}
+}
+
 
 short DrawViewBalloon::mustExecute() const
 {

src/Mod/TechDraw/App/DrawViewBalloon.h

@@ -27,6 +27,7 @@
 # include <App/DocumentObject.h>
 # include <App/FeaturePython.h>
 # include <App/PropertyLinks.h>
+# include <App/PropertyUnits.h>
 
 #include "DrawView.h"
 
@@ -53,8 +54,8 @@ class TechDrawExport DrawViewBalloon : public TechDraw::DrawView
     App::PropertyEnumeration EndType;
     App::PropertyEnumeration Symbol;
     App::PropertyFloat       SymbolScale;
-    App::PropertyFloat       OriginX;
-    App::PropertyFloat       OriginY;
+    App::PropertyLength      OriginX;
+    App::PropertyLength      OriginY;
     App::PropertyBool        OriginIsSet;
     App::PropertyFloat       TextWrapLen;
 
@@ -79,6 +80,7 @@ class TechDrawExport DrawViewBalloon : public TechDraw::DrawView
 protected:
     void onChanged(const App::Property* prop);
     virtual void onDocumentRestored();
+	virtual void handleChangedPropertyType(Base::XMLReader &reader, const char *TypeName, App::Property * prop);
 
 private:
 };

src/Mod/TechDraw/TDTest/DVBalloonTest.py

@@ -8,6 +8,7 @@
 from __future__ import print_function
 
 import FreeCAD
+from FreeCAD import Units
 import Part
 import Measure
 import TechDraw
@@ -38,36 +39,36 @@ def DVBalloonTest():
     view1 = FreeCAD.ActiveDocument.addObject('TechDraw::DrawViewPart','View')
     FreeCAD.ActiveDocument.View.Source = [FreeCAD.ActiveDocument.Box]
     rc = page.addView(view1)
-    view1.X = 30
-    view1.Y = 150
+    view1.X = Units.Quantity(30.0,Units.Length)
+    view1.Y = Units.Quantity(150.0,Units.Length)
     view2 = FreeCAD.activeDocument().addObject('TechDraw::DrawViewPart','View001')
     FreeCAD.activeDocument().View001.Source = [FreeCAD.activeDocument().Sphere]
     rc = page.addView(view2)
-    view2.X = 220
-    view2.Y = 150
+    view2.X = Units.Quantity(220.0,Units.Length)
+    view2.Y = Units.Quantity(150.0,Units.Length)
     FreeCAD.ActiveDocument.recompute()
 
     print("Place balloon")
     balloon1 = FreeCAD.ActiveDocument.addObject('TechDraw::DrawViewBalloon','Balloon1')
     balloon1.sourceView=view1
     balloon1.OriginIsSet=1
-    balloon1.OriginX=view1.X + 20
-    balloon1.OriginY=view1.Y + 20
+    balloon1.OriginX=view1.X + Units.Quantity(20.0,Units.Length)
+    balloon1.OriginY=view1.Y + Units.Quantity(20.0,Units.Length)
     balloon1.Text="1"
-    balloon1.Y=balloon1.OriginX + 20
-    balloon1.X=balloon1.OriginY + 20
+    balloon1.Y=balloon1.OriginX + Units.Quantity(20.0,Units.Length)
+    balloon1.X=balloon1.OriginY + Units.Quantity(20.0,Units.Length)
 
     print("adding balloon1 to page")
     rc = page.addView(balloon1)
 
     balloon2 = FreeCAD.ActiveDocument.addObject('TechDraw::DrawViewBalloon','Balloon2')
     balloon2.sourceView=view2
     balloon2.OriginIsSet=1
-    balloon2.OriginX=view2.X + 20
-    balloon2.OriginY=view2.Y + 20
+    balloon2.OriginX=view2.X + Units.Quantity(20.0,Units.Length)
+    balloon2.OriginY=view2.Y + Units.Quantity(20.0,Units.Length)
     balloon2.Text="2"
-    balloon2.Y=balloon2.OriginX + 20
-    balloon2.X=balloon2.OriginY + 20
+    balloon2.Y=balloon2.OriginX + Units.Quantity(20.0,Units.Length)
+    balloon2.X=balloon2.OriginY + Units.Quantity(20.0,Units.Length)
 
     print("adding balloon2 to page")
     rc = page.addView(balloon2)