internal AnnotationSceneNode CreateAnnotation(IEnumerable <SceneElement> targets)
{
Artboard artboard = this.sceneViewModel.DefaultView.Artboard;
SceneElement sceneElement = Enumerable.First <SceneElement>(targets);
int num = Enumerable.Count <SceneElement>(targets);
bool treatTopLeftAsCenter = num > 1 || sceneElement.Equals((object)sceneElement.ViewModel.RootNode);
AnnotationSceneNode annotation;
using (SceneEditTransaction editTransaction = sceneElement.ViewModel.CreateEditTransaction(StringTable.AddAnnotationUndoUnit))
{
annotation = AnnotationManagerSceneNode.CreateAnnotation((SceneNode)sceneElement);
foreach (SceneElement element in Enumerable.Skip <SceneElement>(targets, 1))
{
AnnotationUtils.AddAnnotationReference(element, annotation);
}
Point point1;
if (treatTopLeftAsCenter)
{
Rect rect = Rect.Empty;
if (num > 1 || !sceneElement.Equals((object)annotation.ViewModel.RootNode))
{
rect = artboard.GetElementListBounds(targets);
}
if (rect.IsEmpty)
{
rect = artboard.ArtboardBounds;
}
point1 = new Point(rect.Left + rect.Width / 2.0, rect.Top + rect.Height / 2.0);
}
else
{
point1 = artboard.GetElementBounds(sceneElement).TopRight;
}
Point point2 = RoundingHelper.RoundPosition(point1);
annotation.Left = point2.X;
annotation.Top = point2.Y;
string authorName = this.AnnotationService.DesignerContext.AnnotationsOptionsModel.AuthorName;
if (!string.IsNullOrEmpty(authorName))
{
annotation.Author = authorName;
}
string authorInitials = this.AnnotationService.DesignerContext.AnnotationsOptionsModel.AuthorInitials;
if (!string.IsNullOrEmpty(authorInitials))
{
annotation.AuthorInitials = authorInitials;
}
AnnotationUtils.SetSerialNumber(annotation);
editTransaction.Commit();
}
this.CreateAnnotationVisual(annotation).Initialize(treatTopLeftAsCenter);
return(annotation);
}