Hello
I woring with custom handles.
I found2 troubles.

1- when i select multiple circular shapes, the 4 handles of corners not resize, work as move.
Only gandlers of the middle act as resize.
Something i missing on the code?

2- Kike can observ the handles are 20x20 pixels.
I note handler act like if point of control is the top border near to bounds of node.
If i catch the handler in any point position not near to border, when i resize is see a Little jumps in the size of the objject.
In this way resize object with presicion is a big problema.

I mniss something in the coe or is related to mindfusion diagram component?

I note this also happen with non custom handlers.
For reproduce this, just use this handlers and try resize any node selectinng the handler from near to internal corner of handler.

How can correct this?

 private void form_HitTestAdjustmentHandles(object sender, HitTestEventArgs e)
   {
       var node = e.Item as DiagramNode;
       var size2 = new Size(form.AdjustmentHandlesSize, form.AdjustmentHandlesSize);
       var size = new Size( 20,20);

       Rect r = e.Item.GetBounds();

       if (r.Contains(e.MousePosition))

           e.HitResult = 8;



       if (node != null)
       {
           var location = node.Bounds.Location;
           var diagOffset = new Vector(location.X, location.Y);

           double rotationAngle = node.RotationAngle;
           Point localPoint = RotatePointAt(e.MousePosition, node.GetCenter(), -rotationAngle);

           if (r.Contains(localPoint))
           {
               e.HitResult = 8;

           }




           localPoint = localPoint - diagOffset;



           var TopLeft = new Point(0, 0);
           var TopLeftRect = new Rect(TopLeft, size);
           if (TopLeftRect.Contains(localPoint))
               e.HitResult = 0;

           var TopMiddle = new Point(node.Bounds.Width / 2 - size.Width / 2, 0);
           var TopMiddleRect = new Rect(TopMiddle, size);
           if (TopMiddleRect.Contains(localPoint))
               e.HitResult = 4;

           var TopRight = new Point(node.Bounds.Width - size.Width, 0);
           var TopRightRect = new Rect(TopRight, size);
           if (TopRightRect.Contains(localPoint))
               e.HitResult = 1;

           var MiddleLeft = new Point(0, node.Bounds.Height / 2 - size.Height / 2);
           var MiddleLeftRect = new Rect(MiddleLeft, size);
           if (MiddleLeftRect.Contains(localPoint))
               e.HitResult = 7;

           var MiddleRight = new Point(node.Bounds.Width - size.Width, node.Bounds.Height / 2 - size.Height / 2);
           var MiddleRightRect = new Rect(MiddleRight, size);
           if (MiddleRightRect.Contains(localPoint))
               e.HitResult = 5;

           var bottomLeft = new Point(0, node.Bounds.Height - size.Height);
           var bottomLeftRect = new Rect(bottomLeft, size);
           if (bottomLeftRect.Contains(localPoint))
               e.HitResult = 3;

           var bottomMiddle = new Point(node.Bounds.Width / 2 - size.Width / 2, node.Bounds.Height - size.Height);
           var bottomMiddleRect = new Rect(bottomMiddle, size);
           if (bottomMiddleRect.Contains(localPoint))
               e.HitResult = 6;

           var bottomRight = new Point(node.Bounds.Width - size.Width, node.Bounds.Height - size.Height);
           var bottomRightRect = new Rect(bottomRight, size);
           if (bottomRightRect.Contains(localPoint))
               e.HitResult = 2;
       }
   }






void form_DrawAdjustmentHandles(object sender, DrawItemEventArgs e)
{
	var node = e.Item as DiagramNode;
	var size2 = new Size(form.AdjustmentHandlesSize,form.AdjustmentHandlesSize);
    var size = new Size(20, 20);


	if (node != null)
	{

           var TopLeft = new Point(0, 0);
           e.Graphics.DrawRectangle(form.SelectedItemHandlesStyle.PatternBrush, form.SelectedItemHandlesStyle.DashPen, new Rect(TopLeft, size));


           var TopMiddle = new Point(node.Bounds.Width / 2 - size.Width / 2, 0);
           e.Graphics.DrawRectangle(form.SelectedItemHandlesStyle.PatternBrush, form.SelectedItemHandlesStyle.DashPen, new Rect(TopMiddle, size));

           var TopRight = new Point(node.Bounds.Width  - size.Width , 0);
           e.Graphics.DrawRectangle(form.SelectedItemHandlesStyle.PatternBrush, form.SelectedItemHandlesStyle.DashPen, new Rect(TopRight, size));


           var MiddleTop = new Point(0, node.Bounds.Height /2 - size.Height /2);
           e.Graphics.DrawRectangle(form.SelectedItemHandlesStyle.PatternBrush, form.SelectedItemHandlesStyle.DashPen, new Rect(MiddleTop, size));

           var MiddleBott = new Point(node.Bounds.Width - size.Width, node.Bounds.Height / 2 - size.Height / 2);
           e.Graphics.DrawRectangle(form.SelectedItemHandlesStyle.PatternBrush, form.SelectedItemHandlesStyle.DashPen, new Rect(MiddleBott, size));

           var bottomLeft = new Point(0, node.Bounds.Height - size.Height);
           e.Graphics.DrawRectangle(form.SelectedItemHandlesStyle.PatternBrush, form.SelectedItemHandlesStyle.DashPen, new Rect(bottomLeft, size));


		    var bottomMiddle = new Point(node.Bounds.Width / 2 - size.Width / 2,	node.Bounds.Height - size.Height);
            e.Graphics.DrawRectangle(form.SelectedItemHandlesStyle.PatternBrush, form.SelectedItemHandlesStyle.DashPen, new Rect(bottomMiddle, size));

            var bottomRight = new Point(node.Bounds.Width  - size.Width ,node.Bounds.Height - size.Height);
            e.Graphics.DrawRectangle(form.SelectedItemHandlesStyle.PatternBrush, form.SelectedItemHandlesStyle.DashPen, new Rect(bottomRight, size));


	}
}




 

Thankyou for your repply.
Always apreciated the great support.

Honesty no understand how use the code:


I have some errors, by example


return base.StartDrawCommon(point, button);

Error      14      'MindFusion.Diagramming.Wpf.Behaviors.LinkShapesBehavior' does not contain a definition for 'StartDrawCommon'      


node.HitTestHandle

Error      11      'object' does not contain a definition for 'HitTestHandle' and no extension method 'HitTestHandle' accepting a first argument of type 'object' could be found (are you missing a using directive or an assembly reference?

Anyway after fix this, no idea how use.
Please can provide complete working example?

How much cost update?

The versión available is 2.8

Some special price for update?

Ok, all ready ia back to the future with versión 3.1 : )


In the attach you can find a simple example code where i can expose some issues.
Run the example, click on the form screen that make shape node apear with custom handlers.

1- when drag mouse of hendle the object jump to position of mouse.
Can please correct the code with your solution.

2- resize the node, you can see is very frequent when you finish size change some times x or y size + - 1 pixel.

I think is related to my custom handler but no, happen with all handlers.
For check this drag your mouse over form, that créate a default object with non custom handler.
You can see the same behaviour in size.


3 - Edit code enable now

form.AlignToGrid = true;
form.ShowGrid = true;
form.GridStyle = GridStyle.Lines;

Click on form that create shape node with my custom handles, then press control + c, copy then paste control +v

Now you have 2 nodes, align the nodes to grid.

Now, pres control, click on both nodes for select, and press control +c for copy, and contol +v for paste. Without unselect, try align that to new nodes created from copy. Both selected at same time, you can see is imposible align to grid, you have to select object one by one for realign.
Why?

I test with hjandlers provided by mindfusion, the default, and same happen.

I really apreciated if can return with a complete code with the fix.
Thk

Quote:


NodeModifying is validation event raised before the node size is updated, so you are showing values from previous mouse move event. From what I can see the node size does not actually change from last move when you release the mouse button, so I think that's false alarm.

Thankyou stoyo
Handlers work now how i wnat but i have few troubles.

Before aply this code, for edit my diagrams i use form.Behavior = Behavior.Modify;

For stop edition mode I use: form.Behavior = Behavior.donothing;


With the solution you provide to me, I cant use more Behavior.Modify and i replace for form.CustomBehavior = new MyBehavior(form);


The problem I found is using form.CustomBehavior = new MyBehavior(form); when i drag over the diagram, that draw now a default node, instead draw a selection tool.

Really sorry for annoying to you with tonz of questions. How can mantain my older behaviour?
I no wnat that node be draw when drag mouse over the diagram, the selection tool shoudl appear.

Some code snipet please or guide to do this?


A second trouble i found, is after resize node, if i try move the node, the node jump few pixels. ; (

Quote:


Derive MyBehavior from the ModifyBehavior class instead of LinkShapesBehavior.

I hope that helps,
Stoyan

Stoyo wrote on Jul 16^th, 2014 at 10:36am:



Yep this help, thank you very easy, what about node Jump after resize and try move the node?
If i move the ndoe work ok, but when rsize the node, some times when inmediatly try move the node, the ndoe jump of position few pixels.