Tuple <string, VoidDelegate> [] CreatePopupMenu()
{
var ret = new List <Tuple <string, VoidDelegate> > {
new Tuple <string, VoidDelegate>("create node", CreateNodeDelegate)
};
var objectUnderMouseCursor = graphViewer.ObjectUnderMouseCursor;
var vedge = objectUnderMouseCursor as IViewerEdge;
if (vedge != null)
{
ret.Add(new Tuple <string, VoidDelegate>("remove edge", () => { graphViewer.RemoveEdge(vedge, false); }));
ret.Add(ColorChangeMenuTuple(vedge.Edge.Attr));
}
else
{
var vnode = objectUnderMouseCursor as IViewerNode;
if (vnode != null)
{
ret.Add(ColorChangeMenuTuple(vnode.Node.Attr));
ret.Add(new Tuple <string, VoidDelegate>("remove node", () => graphViewer.RemoveNode(vnode, false)));
}
}
ret.Add(new Tuple <string, VoidDelegate>("find a node to pan here", PanToNode));
return(ret.ToArray());
}
private void Grid_KeyDown(object sender, KeyEventArgs evt)
{
if (_currentCmd == "node editing")
{
return;
}
switch (evt.Key)
{
case Key.V:
selectBtn.IsChecked = true;
pressingBtn(selectBtn);
_currentCmd = "select";
break;
case Key.E:
edgeBtn.IsChecked = true;
pressingBtn(edgeBtn);
_currentCmd = "add edge";
break;
case Key.N:
nodeBtn.IsChecked = true;
pressingBtn(nodeBtn);
_currentCmd = "add node";
break;
case Key.Space:
_graphViewer.Panning = true;
var sresInfo = Application.GetResourceStream(new Uri("cur_scroll.cur", UriKind.Relative));
var cur = new System.Windows.Input.Cursor(sresInfo.Stream);
this.Cursor = cur;
break;
case Key.T:
VDebug.D.tag++;
this.Title = $"trigged{selfcounter++}";
break;
case Key.Delete:
if (_currentCmd == "select")
{
foreach (var obj in _graphViewer.LayoutEditor.dragGroup)
{
var vnode = obj as VNode;
if (vnode != null)
{
_graphViewer.RemoveNode(vnode, true);
continue;
}
var vedge = obj as VEdge;
if (vedge != null)
{
_graphViewer.RemoveEdge(vedge, true);
continue;
}
var vlabel = obj as VLabel;
if (vlabel != null)
{
_graphViewer.RemoveLabel(vlabel);
}
}
_graphViewer.LayoutEditor.Clear();
}
break;
}
}