void tg_Area_VertexSelected(object sender, VertexSelectedEventArgs args)
{
if (args.MouseArgs.LeftButton == MouseButtonState.Pressed && tg_edgeMode.SelectedIndex == 1)
{
tg_Area.GenerateEdgesForVertex(args.VertexControl, (EdgesType)tg_edgeType.SelectedItem);
}
if (args.MouseArgs.RightButton == MouseButtonState.Pressed)
{
args.VertexControl.ContextMenu = new System.Windows.Controls.ContextMenu();
var menuitem = new System.Windows.Controls.MenuItem() { Header = "Delete item", Tag = args.VertexControl };
menuitem.Click += tg_deleteitem_Click;
args.VertexControl.ContextMenu.Items.Add(menuitem);
var str = new StringBuilder();
using (var writer = new StringWriter(str))
XamlWriter.Save(args.VertexControl.ContextMenu.Template, writer);
Debug.Write(str);
}
}
void dg_Area_VertexSelected(object sender, VertexSelectedEventArgs args)
{
if (args.MouseArgs.LeftButton == MouseButtonState.Pressed)
{
if (Keyboard.IsKeyDown(Key.LeftCtrl))
{
//if (DragBehaviour.GetIsDragging(args.VertexControl)) return;
SelectVertex(args.VertexControl);
}
}
else if (args.MouseArgs.RightButton == MouseButtonState.Pressed)
{
args.VertexControl.ContextMenu = new System.Windows.Controls.ContextMenu();
var mi = new System.Windows.Controls.MenuItem() { Header = "Delete item", Tag = args.VertexControl };
mi.Click += mi_Click;
args.VertexControl.ContextMenu.Items.Add(mi);
}
}
void dg_Area_VertexSelectedForED(object sender, GraphX.Models.VertexSelectedEventArgs args)
{
if (_isInEDMode)
{
if (_edVertex == null) //select starting vertex
{
_edVertex = args.VertexControl;
_edFakeDV = new DataVertex()
{
ID = -666
};
_edGeo = new PathGeometry(new PathFigureCollection()
{
new PathFigure()
{
IsClosed = false, StartPoint = _edVertex.GetPosition(), Segments = new PathSegmentCollection()
{
new PolyLineSegment(new List <Point>()
{
new Point()
}, true)
}
}
});
var dedge = new DataEdge(_edVertex.Vertex as DataVertex, _edFakeDV);
_edEdge = new EdgeControl(_edVertex, null, dedge)
{
ManualDrawing = true
};
dg_Area.AddEdge(dedge, _edEdge);
dg_Area.LogicCore.Graph.AddVertex(_edFakeDV);
dg_Area.LogicCore.Graph.AddEdge(dedge);
_edEdge.SetEdgePathManually(_edGeo);
}
else if (_edVertex != args.VertexControl) //finish draw
{
_edEdge.Target = args.VertexControl;
var dedge = _edEdge.Edge as DataEdge;
dedge.Target = args.VertexControl.Vertex as DataVertex;
var fig = _edGeo.Figures[0];
var seg = fig.Segments[_edGeo.Figures[0].Segments.Count - 1] as PolyLineSegment;
if (seg.Points.Count > 0)
{
var targetPos = _edEdge.Target.GetPosition();
var sourcePos = _edEdge.Source.GetPosition();
//get the size of the source
var sourceSize = new Size()
{
Width = _edEdge.Source.ActualWidth,
Height = _edEdge.Source.ActualHeight
};
var targetSize = new Size()
{
Width = _edEdge.Target.ActualWidth,
Height = _edEdge.Target.ActualHeight
};
var src_start = seg.Points.Count == 0 ? fig.StartPoint : seg.Points[0];
var src_end = seg.Points.Count > 1 ? (seg.Points[seg.Points.Count - 1] == targetPos ? seg.Points[seg.Points.Count - 2] : seg.Points[seg.Points.Count - 1]) : fig.StartPoint;
Point p1 = GeometryHelper.GetEdgeEndpoint(sourcePos, new Rect(sourceSize), src_start, _edEdge.Source.MathShape);
Point p2 = GeometryHelper.GetEdgeEndpoint(targetPos, new Rect(targetSize), src_end, _edEdge.Target.MathShape);
fig.StartPoint = p1;
if (seg.Points.Count > 1)
{
seg.Points[seg.Points.Count - 1] = p2;
}
}
GeometryHelper.TryFreeze(_edGeo);
_edEdge.SetEdgePathManually(new PathGeometry(_edGeo.Figures));
_isInEDMode = false;
clearEdgeDrawing();
}
}
}