Hello,

I need to implement this feature: after clicking the left mouse button on the edge or diagonal of the ShapeNode, hold down and drag the edge or diagonal of the ShapeNode to change the shapenode.bounds.

Any assistance would be appreciated.

Cheers,

JackPan

Yes, you're right. I set the Diagram.Behavior to PanAndModify, and I can drag the overlayNode to change its Bounds size now .
Currently overlaynode. HandleStyle is set to handlesstyle. DashFrame, imagelayNode does not set the property HandleStyle.
I want to change the value of the drag.Because now this value is too big, it's going to be a big drag.I want to make it smaller.

Any assistance would be appreciated.

Cheers,

Jack

Yes, you are right.I did what you said.

Thanks to you, Lyubo.

Cheers,

Jack

Hello,

JackPan wrote on Apr 13^th, 2020 at 12:51am:


Modify your NodeModifying handler to this:

private void diagram_NodeModifying(object sender, NodeValidationEventArgs e)
{
	if (e.Node == overlayNode)
	{
		if (e.Node.Bounds.Right > imageNode.Bounds.Right ||
			e.Node.Bounds.Bottom > imageNode.Bounds.Bottom)
			e.Cancel = true;

		diagram.InvalidateForeground();
	}
} 

JackPan wrote on Apr 13^th, 2020 at 12:51am:


Set the Ruler.ProjectionColor property.

Regards,
Lyubo
MindFusion

And I want to display the overlayNode's length and width in two textboxes in real time while dragging the specified edge of the overlayNode.I only know these two code: textBoxW. Text = overlayNode. Bounds. Width. ToString ();TextBoxH. Text = overlayNode. Bounds. Height. ToString (); But I don't know where to put it together.

Any assistance would be appreciated.

Cheers,

Jack

Yes, you're right, Lyubo. Thanks a lot to you, Lyubo.

I've done it.

Now I put this code overlayNode EnabledHandles ^ = AdjustmentHandles. Move;Put it in the NodeModifying of the Diagram.Need to put the overlayNode. EnabledHandles ^ = AdjustmentHandles. Move; Put it in a better place? What event is the NodeModifying function of Diagram?

private void diagram_NodeModifying(object sender, NodeValidationEventArgs e)
{
overlayNode.EnabledHandles ^= AdjustmentHandles.Move;
if (e.Node == overlayNode)
{
if (e.Node.Bounds.Right > imageNode.Bounds.Right || e.Node.Bounds.Bottom > imageNode.Bounds.Bottom)
e.Cancel = true;
textBoxW.Text = overlayNode.Bounds.Width.ToString();
textBoxH.Text = overlayNode.Bounds.Height.ToString();
diagram.InvalidateForeground();
}
}

Cheers,

Jack

Thank you, Lyubo.

This online document is really a good thing!

Cheers,

Jack

Hello,

This piece of code doesn't prohibit left resize and indeed, I can resize beyond the left and top edge without problem with it in my test (see attached image).

Check if you're manually changing overlayNode Bounds in another location, by setting the bottom and right edges to a bigger value than those of imageNode. If overlayNode.Bounds.Bottom or overlayNode.Bounds.Right are already bigger than imageNode's, it will prevent further modifications to overlayNode.

Regards,
Lyubo
MindFusion