private void GraphViewer_MouseUp(object sender, MsaglMouseEventArgs e)
{
string selectedNode = lastSelectedId;
CheckObject();
if (!string.IsNullOrWhiteSpace(lastSelectedId))
{
int lastSelectedGraphId;
if (int.TryParse(lastSelectedId, out lastSelectedGraphId) && !string.IsNullOrWhiteSpace(selectedNode))
{
var first = graph.FindVertex(graphVisualizer.Nodes.Where(x => x.Id == selectedNode).FirstOrDefault().LabelText);
var second = graph.FindVertex(graphVisualizer.Nodes.Where(x => x.Id == lastSelectedId).FirstOrDefault().LabelText);
if (Keyboard.IsKeyDown(Key.LeftCtrl) || Keyboard.IsKeyDown(Key.RightCtrl))
{
graph.ConnectVertex(first, second);
}
else if (Keyboard.IsKeyDown(Key.LeftShift) || Keyboard.IsKeyDown(Key.RightShift))
{
graph.RemoveEdge(first, second);
}
else if (Keyboard.IsKeyDown(Key.LeftAlt) || Keyboard.IsKeyDown(Key.RightAlt))
{
graph.RemoveVertex(first);
}
DrawGraph();
}
}
}
private void GraphViewer_MouseUp(object sender, MsaglMouseEventArgs e)
{
string selectedNode = lastSelectedId;
CheckObject();
if (!string.IsNullOrWhiteSpace(lastSelectedId))
{
int lastSelectedGraphId = int.Parse(lastSelectedId);
if (Keyboard.IsKeyDown(Key.LeftCtrl) || Keyboard.IsKeyDown(Key.RightCtrl))
{
if (!string.IsNullOrWhiteSpace(selectedNode))
{
var first = graph.FindVertex(selectedNode);
var second = graph.FindVertex(lastSelectedId);
if (first?.Degree == 0 || second?.Degree == 0)
{
graph.ConnectVertex(first, second);
}
}
else
{
var vertex = graph.AddVertex();
graph.ConnectVertex(lastSelectedGraphId, vertex.Id);
}
DrawGraph();
}
else if (Keyboard.IsKeyDown(Key.LeftShift) || Keyboard.IsKeyDown(Key.RightShift))
{
graph.RemoveVertex(graph.Vertices.Where(x => x.Id == lastSelectedGraphId).FirstOrDefault());
DrawGraph();
}
}
}