Hi Stoyan,

I need you help again -
1. Is there any way to add a tooltip to diagram ruler?
2. For center handle of a node - I'm using EasyMove for HandlesStype.
  1) Is there any way to make the center handle also able to move the node?
  2) Any way to make the center handle more observable? Like change to a blue color other than white or change size/shape
  3) Any way to make a Locked node display a small lock icon at the corner and make a solid border around it like HatchFrame(but hatchframe is too ugly)

Thank you!

Kyle

2. You could set HandlesStyle to Custom and handle Draw/HitTest events:

void OnDrawAdjustmentHandles(object sender, MindFusion.Diagramming.DrawItemEventArgs e)
{
	var node = (DiagramNode)e.Item;
	var style = node == diagram.ActiveItem ?
		diagram.ActiveItemHandlesStyle :
		diagram.SelectedItemHandlesStyle;

	InternalUtils.DrawSelHandles(
		e.Graphics,
		style,
		diagram.DisabledHandlesStyle,
		node.Bounds,
		node.RotationAngle,
		node.EnabledHandles,
		true,
		HandlesStyle.SquareHandles,
		diagram.AdjustmentHandlesSize);

	var c = node.GetCenter();
	var r = new RectangleF(c.X, c.Y, 0, 0);
	r.Inflate(2.5f, 2.5f);
	e.Graphics.FillEllipse(Brushes.Blue, r);

	var p = (System.Drawing.Pen)Pens.Black.Clone();
	p.Width = 0;
	e.Graphics.DrawEllipse(p, r);
	p.Dispose();
}

void OnHitTestAdjustmentHandles(object sender, HitTestEventArgs e)
{
	if (e.Item.ContainsPoint(e.MousePosition))
		e.HitResult = 8;
} 

I hope that helps,
Stoyan

Hi Stoyan,

First thank you for so detailed code samples. They work well for all my questions except a little bug for Moving node.

When a node is small(like 10x8 pixels) and all the handles will stacked together. When this happens, I cannot move it any more. Whenever I drag it one or two pixels away, the mouse cursor will change from "move" to "cancel". And when mouse is released the node back to original place.

Can you look into this? Thanks.


Stoyo wrote on May 1^st, 2013 at 8:07am:

Thank you Stoyan. That does help!!