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Change Position of ContextButtonPad [message #1798837]

Mon, 26 November 2018 13:56

Felix Buehler

Messages: 15
Registered: July 2017

Junior Member

Hi there!

I have added some elements to the ContextButtonPad by overwriting the getContextButtonPad() in DefaultToolBehaviorProvider and there modifying the data.getDomainSpecificContextButtons() (where data is the IContextButtonPadData).
Until here everything works fine. The Buttons get added and are clickable.

What doesn't work is when the elements on which the ContextButtonPad can by seen are placed at the border of the editor window, like this:
index.php/fa/34405/0/

Now the ContextButtonPad is expanding to the left and i would have to scroll horizontally to see the other 3 context buttons.
I read in another post that the PadLocation can be modified via

data.getPadLocation().setRectangle(rectangle);

but the change wouldn't reflect in the UI.
Is there a way to always expand the ButtonPad to the right?

Thanks in advance and best regards!
Felix

Attachment: image-2018-07-13-13-14-00-100.png
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Re: Change Position of ContextButtonPad [message #1798922 is a reply to message #1798837]

Tue, 27 November 2018 13:25

Michael Wenz

Messages: 1931
Registered: July 2009
Location: Walldorf, Germany

Senior Member

Hi Felix,

there is some limitation in GEF3 behind this behavior. The scrollbars cannot be updated for showing the context button pad, but there is an option that ou might try to get this. Graphiti can switch GEF into a mode where the scrollbars are always shown; in that mode the diagram can be scrolled in case the context button pad requires it. Please note that this could not be achieved via GEF3 APIs but only using some internal functionality so there is no guarantee that it will continue to work in the future.

Please implement the method getDiagramScrollingBehavior() in your tool behavior provider and return DiagramScrollingBehavior.SCROLLBARS_ALWAYS_VISIBLE instead of GEF_DEFAULT.

Michael

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Re: Change Position of ContextButtonPad [message #1798967 is a reply to message #1798922]

Wed, 28 November 2018 06:48

Felix Buehler

Messages: 15
Registered: July 2017

Junior Member

Hi Michael!

If I return DiagramScrollingBehavior.SCROLLBARS_ALWAYS_VISIBLE, the scrollbars are always visible.
This doesn't solve the problem though, because, while I could scroll to see the other context buttons, I really can't because the context buttons disappear if I'm not hovering over the point.

Is there a way to let the context button pad extend to right instead of to the left?

Cheers und thank you!
Felix

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Re: Change Position of ContextButtonPad [message #1798969 is a reply to message #1798967]

Wed, 28 November 2018 07:32

Felix Buehler

Messages: 15
Registered: July 2017

Junior Member

Hi Michael,

I solved the Issue by adjusting width and height of the ContextButtonPad.

int x = context.getPictogramElement().getGraphicsAlgorithm().getX();
int y = context.getPictogramElement().getGraphicsAlgorithm().getY();

data.getPadLocation().setRectangle(x + 5, y, 5, 120);

By reducing the width and increasing the heigth, the buttons seem to be forced into the vertical, which is good enough for me.
My initial fault was to not set x and y correctly, so the pad wouldn't display.

Here's the result:
index.php/fa/34414/0/