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Normal Topic multi node drag position (Read 2077 times)
ulthien
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multi node drag position
Oct 8th, 2012 at 4:02pm
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hello,

when the user drags around e.g. several selected nodes together,

how to get the position of the top left corner? (in order to place e.g. a container node there)

i tried with:

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                            var dragRect = new Rect();
                            foreach (DiagramNode node in Selection.Items)
                            {
                                dragRect.Union(node.Bounds);
                            }
                            var mp = new Point(dragRect.Left, dragRect.Top);


but this (i think) does not reflect the position of right now visually dragged nodes around...

cheers
  
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Stoyo
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Re: multi node drag position
Reply #1 - Oct 9th, 2012 at 6:23am
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Hi,

Try with diagram.Selection.Bounds. Or using your code, initialize dragRect with the Bounds of the first selected node instead of a new Rect, or otherwise the union might always include the (0,0) point.

I hope that helps,
Stoyan
  
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ulthien
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Re: multi node drag position
Reply #2 - Oct 9th, 2012 at 8:32am
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thx, this is an excellent tip - it works Smiley

cheers
  
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