public override bool HandleEvent(Gdk.Event evnt)
{
Gdk.EventButton eventButton = evnt as Gdk.EventButton;
if (eventButton != null)
{
if (eventButton.Type == Gdk.EventType.ButtonPress)
{
using (Context context = Gdk.CairoHelper.Create(evnt.Window)) {
foreach (Shape shape in this.Model.GetSubModel <ShapesModel>().Shapes)
{
if (shape is ConnectorShape)
{
Glue g = CheckGlues(new PointD(eventButton.X, eventButton.Y), context, (shape as ConnectorShape).FromGlue, (shape as ConnectorShape).ToGlue);
if (g != null)
{
dragGlue = g;
isDragging = true;
moved = false;
dragConnector = shape as ConnectorShape;
//
InteractionStateModel interState = this.Model.GetSubModel <InteractionStateModel>();
this.Model.BeginUpdate();
ConnectorShape interDragConnector = dragConnector.DeepCopy();
interState.Interaction.Add(interDragConnector);
Glue interDragGlue = dragGlue.DeepCopy();
if (dragGlue == dragConnector.FromGlue)
{
interDragConnector.FromGlue = interDragGlue;
}
else
{
interDragConnector.ToGlue = interDragGlue;
}
interDragGlue.Parent = null;
interDragGlue.Matrix.InitIdentity();
interDragGlue.Center = new PointD(eventButton.X, eventButton.Y);
interState.Interaction.Add(interDragGlue);
this.Model.EndUpdate();
//
return(true);
}
}
}
}
foreach (Shape shape in this.Model.GetSubModel <SelectionModel>().Selected)
{
if (shape is ConnectorShape)
{
return(true);
}
}
}
else if (eventButton.Type == Gdk.EventType.ButtonRelease)
{
if (dragGlue != null)
{
using (Context context = Gdk.CairoHelper.Create(evnt.Window)) {
foreach (Shape shape in this.Model.GetSubModel <ShapesModel>().Shapes)
{
List <Shape> glues = new List <Shape>();
foreach (Shape subShape in shape.Items)
{
if (subShape is Glue)
{
glues.Add(subShape);
}
}
Glue g = CheckGlues(new PointD(eventButton.X, eventButton.Y), context, glues);
if (g != null)
{
this.Model.BeginUpdate();
if (dragGlue == dragConnector.FromGlue)
{
dragConnector.FromGlue = g;
dragConnector.From = g.Parent;
}
else
{
dragConnector.ToGlue = g;
dragConnector.To = g.Parent;
}
this.Model.EndUpdate();
break;
}
}
}
this.Model.BeginUpdate();
this.Model.GetSubModel <InteractionStateModel>().Interaction.Clear();
this.Model.EndUpdate();
isDragging = false;
dragGlue = null;
return(true);
}
}
}
Gdk.EventMotion eventMotion = evnt as Gdk.EventMotion;
if (eventMotion != null)
{
if (isDragging && dragGlue != null)
{
this.Model.BeginUpdate();
ConnectorShape interConnector = (ConnectorShape)this.Model.GetSubModel <InteractionStateModel>().Interaction[0];
Glue interDragGlue = (Glue)this.Model.GetSubModel <InteractionStateModel>().Interaction[1];
interDragGlue.Center = new PointD(eventMotion.X, eventMotion.Y);
this.Model.EndUpdate();
moved = true;
return(true);
}
}
return(base.HandleEvent(evnt));
}
public CurvedArrowShape(Shape from, Glue fromGlue, Shape to, Glue toGlue, List <Distance> controlPoints) : base(from, fromGlue, to, toGlue, controlPoints)
{
}
public CurvedArrowShape(Shape from, Glue fromGlue, Shape to, Glue toGlue) : base(from, fromGlue, to, toGlue)
{
}
public ConnectorShape(Shape from, Glue fromGlue, Shape to, Glue toGlue) : base(from, to)
{
this.fromGlue = fromGlue;
this.toGlue = toGlue;
}
public PolylineArrowShape(Shape from, Glue fromGlue, Shape to, Glue toGlue, List <Distance> polyline) : base(from, fromGlue, to, toGlue)
{
this.Points = polyline;
}
public PolylineArrowShape(Shape from, Glue fromGlue, Shape to, Glue toGlue) : base(from, fromGlue, to, toGlue)
{
}