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Normal Topic Problems with pasting custom shapenodes (Read 3272 times)
lindborg
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Problems with pasting custom shapenodes
Nov 24th, 2008 at 3:51pm
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I have created a custom Shapenode, a circle. But when I am copy and pasting this shape node the shape becomes a square. Can someone point me in the right direction? This is rather annoying Wink
  
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Stoyo
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Re: Problems with pasting custom shapenodes
Reply #1 - Nov 24th, 2008 at 4:08pm
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You will have to add a copy constructor, and if you have any custom fields, also override the SaveTo and LoadFrom methods.

I hope that helps,
Stoyan
  
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lindborg
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Re: Problems with pasting custom shapenodes
Reply #2 - Nov 25th, 2008 at 8:08am
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Thanks Stoyo, but do you have some example code that explains?
  
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Stoyo
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Re: Problems with pasting custom shapenodes
Reply #3 - Nov 25th, 2008 at 8:41am
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The IconNodes sample shows how to override SaveTo and LoadFrom. A copy constructor for the node class there would look like this:

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public IconNode(IconNode prototype) : base(prototype)
{
	label = prototype.label;
	icon = prototype.icon;
}


I hope that helps,
Stoyan
  
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JohanMeridium
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Re: Problems with pasting custom shapenodes
Reply #4 - Nov 25th, 2008 at 11:04am
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I'm tying to copy a ShapeNode using the CopyToClipboard and PasteFromClipboard methods using the code below.

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diagram1.DefaultShape = new Shape(new ElementTemplate[] {
   new ArcTemplate(0, 0, 100, 100, 0, 360, Color.Black, DashStyle.DashDot, 1f),
   new ArcTemplate(20, 20, 60, 60, 0, 360, Color.Black, DashStyle.DashDot, 1f)
   }, FillMode.Alternate);
ShapeNode s1 = diagram1.Factory.CreateShapeNode(10, 10, 10, 10);
diagram1.Selection.AddItem(s1);
diagramView1.CopyToClipboard(true);
diagramView1.PasteFromClipboard(25, 25);


In this case the FillMode of the Shape is not copied correctly. Is this something that will be fixed in future releases, or is there any known workaround?
And is there other properties on Shape that will not be copied correctly?

Or am I doing something wrong?
  
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Stoyo
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Re: Problems with pasting custom shapenodes
Reply #5 - Nov 25th, 2008 at 3:19pm
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We'll fix this in the next release.
  
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JohanMeridium
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Re: Problems with pasting custom shapenodes
Reply #6 - Nov 26th, 2008 at 7:37am
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Thanks, thats great!

After some more testing I found that setting some other prooerties on the Shape will make it dissappear when doing the copy.

Try the example above but set shape.Id to something. Then the circle Shape will be replaced by a square one.

Any suggestions on how we could workaroud this?
  
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Stoyo
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Re: Problems with pasting custom shapenodes
Reply #7 - Nov 26th, 2008 at 9:21am
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If the shape has some ID assigned to it, only its ID is copied to the clipboard. When pasting it to a diagram in another process, a shape with the same ID must already be defined, or otherwise the node is reset to a rectangle.

I hope that helps,
Stoyan
  
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