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Normal Topic Zoom on one axis (Read 1620 times)
dossantos
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Zoom on one axis
Sep 19th, 2013 at 9:10am
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Hi all,

is it possible to zoom a diagramview only on one axis (X-zoom or Y-zoom), or otherwise directly manipulate the affine transform of the diagramview?

Cheers,
   Tim
  
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Stoyo
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Re: Zoom on one axis
Reply #1 - Sep 19th, 2013 at 9:59am
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Hi,

You could override the Diagram.Draw method to apply additional scale; hit-testing won't work correctly then, but that still might be useful if you show read-only diagrams.

Alternatively, you could resize the diagram items:

Code
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foreach (var node in diagram.Nodes)
{
	var r = node.Bounds;
	r.Y *= yScale;
	r.Height *= yScale;
	node.Bounds = r;
}

foreach (var link in diagram.Links)
{
	for (int i = 1; i < link.ControlPoints.Count - 1; i++)
	{
		var p = link.ControlPoints[i];
		p.Y *= yScale;
		link.ControlPoints[i] = p;
	}
}


This will probably look better than using transforms, since it won't deform rounded corners, selection handles, fonts, etc.

I hope that helps,
Stoyan
  
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