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Normal Topic Selection bounds (Read 1820 times)
j poz
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Selection bounds
Mar 7th, 2014 at 6:47pm
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How do I get the /actual/ bounds of a selection? What I want to figure out is it a container's bounds are inside of a selection's bounds, but the selection's bounds don't return the current visible selection, instead they return the maximum bounds of all selected items..
  
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j poz
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Re: Selection bounds
Reply #1 - Mar 7th, 2014 at 6:51pm
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Or more generally... Selection.IncludeItemsIfIntersect is true, but I don't want this to apply to Containers, so I am trying to deselect them in the SelectionChanged event but don't have the bounds of the user-drawn selection...
  
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Stoyo
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Re: Selection bounds
Reply #2 - Mar 7th, 2014 at 8:24pm
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When SelectionChanged is raised, Selection.Bounds is already updated to match selected items. Selection.Bounds should correspond to the currently drawn rectangle in NodeSelecting event handler. So instead of deselecting containers from  SelectionChanged, try setting e.Cancel = true in NodeSelecting:

Code
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private void diagram_NodeSelecting(object sender, NodeValidationEventArgs e)
{
	var ctr = e.Node as ContainerNode;
	if (ctr != null && !diagram.Selection.Bounds.Contains(ctr.Bounds))
		e.Cancel = true;
}


I hope that helps,
Stoyan
  
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