private DesignerGlyph[] CreateConnectorDragDropGlyphs()
{
//see if there's a drag'n'drop operation going on
WorkflowView parentView = ParentView;
DragDropManager dragDropManager = GetService(typeof(DragDropManager)) as DragDropManager;
if (parentView == null || dragDropManager == null || !parentView.DragDropInProgress || DrawingState != DrawingStates.Valid)
{
return new DesignerGlyph[] { }
}
;
List <DesignerGlyph> glyphs = new List <DesignerGlyph>();
Rectangle logicalViewPort = parentView.ClientRectangleToLogical(new Rectangle(Point.Empty, parentView.ViewPortSize));
AmbientTheme ambientTheme = WorkflowTheme.CurrentTheme.AmbientTheme;
Rectangle[] connectors = GetConnectors();
Rectangle helpTextRectangle = HelpTextRectangle;
for (int i = 0; i < connectors.Length; i++)
{
if (logicalViewPort.IntersectsWith(connectors[i]) && i != CurrentDropTarget && dragDropManager.IsValidDropContext(new ConnectorHitTestInfo(this, HitTestLocations.Designer, i)))
{
Point glyphLocation = Point.Empty;
if (helpTextRectangle.IsEmpty)
{
glyphLocation = new Point(connectors[i].Location.X + connectors[i].Size.Width / 2 + 1, connectors[i].Location.Y + connectors[i].Size.Height / 2);
}
else
{
glyphLocation = new Point(helpTextRectangle.Left + helpTextRectangle.Width / 2 + 1, helpTextRectangle.Top - ambientTheme.DropIndicatorSize.Height / 2);
}
glyphs.Add(new ConnectorDragDropGlyph(i, glyphLocation));
}
}
return(glyphs.ToArray());
}