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Scrolling by pixels programmatically [message #1219514]

Wed, 04 December 2013 11:31

Istvan Meszaros

Messages: 49
Registered: October 2009

Member

Hello all,

i need to synchronize the vertical scroll offset of a NatTable with another SWT component (not NatTable). The other component can be accurately scrolled by pixels (not rows).

To do the synchronization, i managed to set the row height of the NatTable to match the row height of the other component, but i don't know how to scroll the NatTable by pixels, and get the current scroll offset in pixels.

Thanks in advance!

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Re: Scrolling by pixels programmatically [message #1219526 is a reply to message #1219514]

Wed, 04 December 2013 12:10

Dirk Fauth

Messages: 2495
Registered: July 2012

Senior Member

Well unfortunately I don't know how to solve that. The scrolling by pixels was introduced in 1.0. There was never a request to scroll a NatTable programmatically by pixels.

You might want to have a look at the ViewportLayer which is responsible for scrolling. If it helps I could introduce getters for the connected IScroller. Not sure if that would help you in any way.

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Re: Scrolling by pixels programmatically [message #1219528 is a reply to message #1219526]

Wed, 04 December 2013 12:15

Istvan Meszaros

Messages: 49
Registered: October 2009

Member

Thanks for the answer, i'll investigate the IScrollers to see if they help.

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Re: Scrolling by pixels programmatically [message #1219532 is a reply to message #1219528]

Wed, 04 December 2013 12:54

Edwin Park

Messages: 124
Registered: July 2009

Senior Member

To programmatically inspect the current viewport offset you can use ViewportLayer.getOrigin() which returns a PixelCoordinate. If you want to set the offset programmatically you can use the ViewportLayer's setOriginX() and setOriginY() methods to do so.

Cheers,
Edwin

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Re: Scrolling by pixels programmatically [message #1240330 is a reply to message #1219532]

Thu, 06 February 2014 08:38

Istvan Meszaros

Messages: 49
Registered: October 2009

Member

Thanks, exactly what i was looking for.

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