void boxClicked(Box box, MouseButtonEventArgs e)
{
if (selectedBox == null)
{
selectedBox = box;
selectedBox.rect.Fill = selectedBrush;
}
else
{
edges.Add(new Edge { From = selectedBox, To = box });
selectedBox.rect.Fill = normalBrush;
selectedBox = null;
}
e.Handled = true;
Redraw();
}
void canvas_MouseUp(object sender, MouseButtonEventArgs e)
{
if (selectedBox != null)
{
selectedBox.rect.Fill = normalBrush;
selectedBox.Left = Mouse.GetPosition(canvas).X;
selectedBox.Top = Mouse.GetPosition(canvas).Y;
selectedBox = null;
}
Redraw();
}
void RandomizeBoxes()
{
Random r = new Random();
for (int i = 0; i < numRect; i++) {
Box box = new Box(r.Next(0, (int)canvas.ActualWidth - 100), r.Next(0, (int)canvas.ActualHeight - 100), 60, 90);
boxes.Add(box);
box.rect.Fill = normalBrush;
box.rect.MouseUp += delegate(object s, MouseButtonEventArgs eA) { boxClicked(box, eA); };
}
}