Two or more resizing tools

GoDiagram (6 and previous)
1

Hello,

Is it possible to have two or more custom resizing tools (e.g. separate resizing tool for node and tool for image), and how can they be implemented.
I tried to do it this way:

Custom GoView class:

DefaultTool = new MyToolManager(this);
Tool = DefaultTool;

ReplaceMouseTool(typeof(GoToolResizing), new MyToolResizing(this));

MyToolManager class:

public override void DoMouseDown()
{
GoObject pickedObject = View.PickObject(true, false, LastInput.DocPoint, true) as MyImage;

        if (pickedObject != null)
            View.Tool = new MyToolImageResizing(View);

        base.DoMouseDown();
    }

MyToolImageResizing class:

public class MyToolImageResizing : GoToolResizing
{
public MyToolImageResizing(GoView view) : base(view) { }

    public override void Start()
    {
        GoObject pickedObject = View.PickObject(true, false, LastInput.DocPoint, true) as MyImage;

        if (pickedObject != null)        
            base.Start();
        }
    }

MyToolResizing class:

public class MyToolResizing : GoToolResizing
{
public MyToolResizing(GoView view) : base(view) {}

public override bool CanStart()
{
if (!base.CanStart())
return false;

        GoObject pickedObject = View.PickObject(true, false, LastInput.DocPoint, true) as MyNode;

        // Check if the node is dragged.
        if (pickedObject != null)
            return true;

        return false;
    }

    public override void Start()
    {
        base.Start();
    }

But it is not working. Please point me to the right direction. What I’m doing wrong?

2

GoToolResizing’s CanStart looks for a Resize handle under the mouse. so… without trying it, I think the CanStart for each of your resizing tools would be something like:



public override bool CanStart() {

if (!base.CanStart())

return false;



IGoHandle handle = PickResizeHandle(this.FirstInput.DocPoint);

return (handle != null &&

handle.HandledObject is GoImage);

}



and… you don’t need MyToolManager. You would ReplaceMouseTool on the first one, and the Add the second one with a view.MouseDownTools.Add.

3

Great, problem solved.

Thanks again Jake.