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Normal Topic Diagram does not zoom if placed inside a DiagramView (Read 2290 times)
bogdip
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Diagram does not zoom if placed inside a DiagramView
Oct 17th, 2014 at 9:58am
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Hello,

I need to ZoomIn/Out, custom set the ZoomFactor but it seems it doesn't work if the Diagram is placed inside a DiagramView.
Instead, if I place it inside a ScrollViewer, the zooming works fine.

I attach a simple sample.

Is there a way to use the DiagramView and also use the zooming?


Thanks,
Bogdan
  
WPFDiagramInsideWinForm_001.rar (Attachment deleted)
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Stoyo
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Re: Diagram does not zoom if placed inside a DiagramView
Reply #1 - Oct 17th, 2014 at 10:17am
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Hi,

Set the DiagramView.ZoomFactor property instead of Diagram's one.

I hope that helps,
Stoyan
  
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bogdip
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Re: Diagram does not zoom if placed inside a DiagramView
Reply #2 - Oct 18th, 2014 at 3:21pm
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Thanks, it did the trick. Too bad that ZoomIn or ZoomOut self descriptive methods can't be used in this case.
  
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Stoyo
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Re: Diagram does not zoom if placed inside a DiagramView
Reply #3 - Oct 20th, 2014 at 7:47am
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You could add them as extensions methods:

Code
Select All
static class DiagramViewExtensions
{
	static public void ZoomIn(this DiagramView view)
	{
		if (view.ZoomFactor < 10)
			view.ZoomFactor += 1;
		else if (view.ZoomFactor < 20)
			view.ZoomFactor += 5;
		else
			view.ZoomFactor += 10;
	}

	static public void ZoomOut(this DiagramView view)
	{
		if (view.ZoomFactor > 20)
			view.ZoomFactor -= 10;
		else if (view.ZoomFactor > 10)
			view.ZoomFactor -= 5;
		else if (view.ZoomFactor > 1)
			view.ZoomFactor -= 1;
	}
}


I hope that helps,
Stoyan
  
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bogdip
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Re: Diagram does not zoom if placed inside a DiagramView
Reply #4 - Oct 20th, 2014 at 11:16am
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Yes, it helps, thanks.
  
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