public async Task OnScroll(WheelEventArgs e)
{
if (e.DeltaY > 0)
{
if (ZoomService.ZoomOut(SVGControl))
{
await SVGControlChanged.InvokeAsync(SVGControl);
}
}
else if (e.DeltaY < 0)
{
if (ZoomService.ZoomIn(SVGControl))
{
await SVGControlChanged.InvokeAsync(SVGControl);
}
}
}
public void ZoomOut()
{
ZoomService.ZoomOut(FrameworkElement.ActualWidth, FrameworkElement.ActualHeight);
}
public async Task Select(MenuEventArgs <MenuItem> e)
{
switch (e.Item.Text)
{
case "Copy":
Copy();
break;
case "Paste":
await Paste();
break;
case "Left":
case "Center":
case "Right":
case "Top":
case "Middle":
case "Bottom":
NodeService.Align(ActiveGraph.Nodes, e.Item.Text);
break;
case "Delete":
await DeleteActive.InvokeAsync("all");
break;
case "Edit":
case "Nodes":
case "Edges":
await ChangeMenu.InvokeAsync(NavChoice.Design);
break;
case "All Nodes":
await Activate("nodes");
break;
case "All Edges":
await Activate("edges");
break;
case "Everything":
await Activate("all");
break;
case "Insert Edge":
await InsertEdge();
break;
case "Insert Node":
NodeService.AddNode(Graph.Nodes, Options.Default, origin[0] * SVGControl.Scale + SVGControl.Xaxis, origin[1] * SVGControl.Scale + SVGControl.Yaxis);
await GraphChanged.InvokeAsync(Graph);
break;
case "Stop Algorithm":
if (StartAlgorithm.Done)
{
StartAlgorithm.Clear = true;
}
else
{
await Reset();
}
break;
case "Zoom In":
if (ZoomService.ZoomIn(SVGControl))
{
await SVGControlChanged.InvokeAsync(SVGControl);
}
break;
case "Zoom Out":
if (ZoomService.ZoomOut(SVGControl))
{
await SVGControlChanged.InvokeAsync(SVGControl);
}
break;
}
}