public async Task AddNewEdge(bool done)
{
if (done && NewEdge.Head != null && NewEdge.Tail != null)
{
if (!Graph.MultiGraph && NewEdge.Head == NewEdge.Tail)
{
Graph.MultiGraph = true;
}
else if (NewEdge.MultiGraph == false && NewEdge.MultiEdges != null)
{
foreach (Edge edge in NewEdge.MultiEdges)
{
Graph.Edges.Remove(edge);
}
}
else if (!Graph.MultiGraph)
{
Graph.MultiGraph = true;
}
if (Graph.Weighted)
{
EdgeService.AddEdge(Graph.Edges, Options.Default, NewEdge.Head, NewEdge.Tail, Math.Round(NewEdge.Weight, 2));
}
else
{
EdgeService.AddEdge(Graph.Edges, Options.Default, NewEdge.Head, NewEdge.Tail);
}
}
await NewEdgeChanged.InvokeAsync(new NewEdge());
await ActiveGraphChanged.InvokeAsync(new Graph());
}
public async Task IterateNodes(int i)
{
Counter = Math.Abs((Counter + i) % FilterNodes.Count);
ActiveGraph.Nodes.Clear();
ActiveGraph.Nodes.Add(FilterNodes[Counter]);
await ActiveGraphChanged.InvokeAsync(ActiveGraph);
await OnRecenter();
}
public async Task Paste()
{
int nextNodeId = NodeService.NextId(Graph.Nodes);
PasteOffset += 5 * SVGControl.Scale;
ActiveGraph = new Graph();
foreach (Node node in CopiedGraph.Nodes)
{
ActiveGraph.Nodes.Add(NodeService.AddNode(Graph.Nodes, node, nextNodeId, PasteOffset));
}
foreach (Edge edge in CopiedGraph.Edges)
{
ActiveGraph.Edges.Add(EdgeService.AddEdge(Graph, edge, nextNodeId));
}
await GraphChanged.InvokeAsync(Graph);
await ActiveGraphChanged.InvokeAsync(ActiveGraph);
}
public async Task Activate(string type)
{
switch (type)
{
case "nodes":
ActiveGraph.Nodes = Graph.Nodes;
await ActiveGraphChanged.InvokeAsync(ActiveGraph);
break;
case "edges":
ActiveGraph.Edges = Graph.Edges;
await ActiveGraphChanged.InvokeAsync(ActiveGraph);
break;
case "all":
await ActiveGraphChanged.InvokeAsync(Graph);
break;
}
}
public async Task GoUpdateActiveEdges()
{
await ActiveGraphChanged.InvokeAsync(ActiveGraph);
}
public async Task SelectEdges()
{
ActiveGraph.Edges = Graph.Edges;
await ActiveGraphChanged.InvokeAsync(ActiveGraph);
}
public async Task RemoveActiveNode(Node node)
{
ActiveGraph.Nodes.Remove(node);
await ActiveGraphChanged.InvokeAsync(ActiveGraph);
}
public async Task JustThisNodeActive(Node node)
{
ActiveGraph = new Graph();
ActiveGraph.Nodes.Add(node);
await ActiveGraphChanged.InvokeAsync(ActiveGraph);
}
public async Task AddActiveNode(Node node)
{
ActiveGraph.Nodes.Add(node);
await ActiveGraphChanged.InvokeAsync(ActiveGraph);
}
public async Task RemoveActiveEdge(Edge edge)
{
ActiveGraph.Edges.Remove(edge);
await ActiveGraphChanged.InvokeAsync(ActiveGraph);
}
public async Task AddActiveEdge(Edge edge)
{
ActiveGraph.Edges.Add(edge);
await ActiveGraphChanged.InvokeAsync(ActiveGraph);
}
public async Task OnEdgeClick(Edge edge)
{
ActiveGraph = new Graph();
ActiveGraph.Edges.Add(edge);
await ActiveGraphChanged.InvokeAsync(ActiveGraph);
}
public async Task OnMouseUp(MouseEventArgs e)
{
MouseDown = false;
if (e.Button == 2)
{
RectSelection.Create = false;
if (!e.CtrlKey && RectSelection.Width <= 0 && RectSelection.Height <= 0)
{
if (ObjectClicked.Right)
{
ObjectClicked.Right = false;
ObjectContextMenu.Open(e.ClientX, e.ClientY);
}
else
{
if (GraphMode == GraphMode.Algorithm)
{
AlgorithmContextMenu.Open(e.ClientX, e.ClientY);
}
else
{
CanvasContextMenu.Open(e.ClientX, e.ClientY);
origin[0] = e.ClientX;
origin[1] = e.ClientY;
if (ActiveGraph.Nodes.Any() || ActiveGraph.Edges.Any())
{
await ActiveGraphChanged.InvokeAsync(new Graph());
}
}
}
}
else
{
bool aNodesChanged = false;
bool aEdgesChanged = false;
foreach (Node node in Graph.Nodes)
{
if (node.Xaxis <= RectSelection.X + RectSelection.Width &&
node.Xaxis >= RectSelection.X &&
node.Yaxis <= RectSelection.Y + RectSelection.Height &&
node.Yaxis >= RectSelection.Y)
{
if (!ActiveGraph.Nodes.Contains(node))
{
ActiveGraph.Nodes.Add(node);
aNodesChanged = true;
}
}
else if (ActiveGraph.Nodes.Remove(node))
{
aNodesChanged = true;
}
}
foreach (Edge edge in Graph.Edges)
{
ShowEdge showEdge = new ShowEdge(edge);
var x = 0.25 * edge.Head.Xaxis + 0.5 * showEdge.CurvePoint[0] + 0.25 * edge.Tail.Xaxis;
var y = 0.25 * edge.Head.Yaxis + 0.5 * showEdge.CurvePoint[1] + 0.25 * edge.Tail.Yaxis;
if (x <= RectSelection.X + RectSelection.Width &&
x >= RectSelection.X &&
y <= RectSelection.Y + RectSelection.Height &&
y >= RectSelection.Y)
{
if (!ActiveGraph.Edges.Contains(edge))
{
ActiveGraph.Edges.Add(edge);
aEdgesChanged = true;
}
}
else if (ActiveGraph.Edges.Remove(edge))
{
aEdgesChanged = true;
}
}
if (aNodesChanged || aEdgesChanged)
{
await ActiveGraphChanged.InvokeAsync(ActiveGraph);
}
}
RectSelection = new RectSelection();
return;
}
if (ObjectClicked.Left)
{
ObjectClicked.Left = false;
if (GraphMode == GraphMode.InsertNode)
{
SvgClass = "pointer";
}
else
{
SvgClass = "grab";
}
}
else if (!e.CtrlKey && !ActiveGraph.Nodes.Any() && !ActiveGraph.Nodes.Any() && GraphMode == GraphMode.InsertNode)
{
NodeService.AddNode(Graph.Nodes, Options.Default, e.ClientX * SVGControl.Scale + SVGControl.Xaxis, e.ClientY * SVGControl.Scale + SVGControl.Yaxis);
}
else if (ActiveGraph.Nodes.Any() || ActiveGraph.Edges.Any())
{
await ActiveGraphChanged.InvokeAsync(new Graph());
}
if (SVGControl.Pan)
{
SVGControl.Pan = false;
SvgClass = "grab";
SVGControl.OldXaxis = SVGControl.Xaxis;
SVGControl.OldYaxis = SVGControl.Yaxis;
}
}