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How to pan an FXCanvas [message #1774047]

Mon, 09 October 2017 18:15

Ken Keefe

Messages: 40
Registered: April 2012

Member

I have an FXCanvas object and I want to tell it to pan right 30 pixels. How can I do that?

Thanks,
Ken

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Re: How to pan an FXCanvas [message #1774123 is a reply to message #1774047]

Tue, 10 October 2017 18:44

Ken Keefe

Messages: 38
Registered: September 2009

Member

I should have mentioned that I thought this would do the trick, but it does not seem to update the position of the canvas at all:

Rectangle rect = canvas.getClientArea();
canvas.scroll(30, 0, 0, 0, rect.width, rect.height, false);

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Re: How to pan an FXCanvas [message #1774318 is a reply to message #1774123]

Thu, 12 October 2017 18:56

Ken Keefe

Messages: 38
Registered: September 2009

Member

I found how to scroll. Here's a snippet that shows what I wanted to do:

		infiniteCanvasViewer = (InfiniteCanvasViewer)domain.getAdapter(AdapterKey.get(IViewer.class, IDomain.CONTENT_VIEWER_ROLE));
		
		// query ViewportPolicy
		ViewportPolicy viewportPolicy = infiniteCanvasViewer.getRootPart()
				.getAdapter(ViewportPolicy.class);

		viewportPolicy.init();
		viewportPolicy.scroll(false, changeInX, 0);
		viewportPolicy.commit();

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Re: How to pan an FXCanvas [message #1775361 is a reply to message #1774318]

Sat, 28 October 2017 11:12

Alexander Nyssen

Messages: 243
Registered: July 2009
Location: Lünen

Senior Member

Take a look into the ViewPortPolicy and the related handlers, e.g. PanOrZoomOnScrollHandler. It provides examples for how scrolling can be performed using an InfiniteCanvasViewer.

[Updated on: Sat, 28 October 2017 11:13]

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