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View/Open Diagram in a SWT shell [message #1784831]

Wed, 04 April 2018 10:58

Eclipse User

Hello all :)

I am trying to view an specific diagram (I have the representation name) in a SWT Shell window. Basically, I need to view a diagram in my own java form as if I am previewing a diagram.

I there a way to do it ? or if not, can I export an snapshot of the diagram and view it in my form ?

Thanks,
Parsa

[Updated on: Wed, 04 April 2018 11:00] by Moderator

Re: View/Open Diagram in a SWT shell [message #1784835 is a reply to message #1784831]

Wed, 04 April 2018 11:33

Eclipse User

Sirius diagrams can currently only be opened inside a full-fledged editor, so not directly inside an arbitrary SWT shell.

You can programmatically export a diagram as an image file, and use that afterwards. You'll need to use DialectManager.INSTANCE.getAllRepresentations(session) to obtain all the existing representations, find the one you're interested in, and then use DialectUIManager.INSTANCE.export() on it to produce the image file.

Re: View/Open Diagram in a SWT shell [message #1784921 is a reply to message #1784835]

Thu, 05 April 2018 14:49

Eclipse User

Thanks Pierre-Charles, I'll try and will let you know how it goes.

Cheers,
Parsa

Re: View/Open Diagram in a SWT shell [message #1784922 is a reply to message #1784921]

Thu, 05 April 2018 16:20

Eclipse User

I have tried exporting as image, but it takes so long and can't really use it. But, in general is there a way to retrieve the IEditorPart for a representation or a semantic target (object) ? I can do representation.openEditor() which returns IEditorPart, but it is shaky and it also opens the editor before returning the IEditorPart which I prefer not.

Thanks,
Parsa

Re: View/Open Diagram in a SWT shell [message #1784939 is a reply to message #1784922]

Fri, 06 April 2018 03:06

Eclipse User

Parsa Pourali wrote on Thu, 05 April 2018 22:20

I have tried exporting as image, but it takes so long and can't really use it.

By default we export using the highest possible resolution to get the best looking result, but this can indeed have performance impacts. In the ExportFormat parameter you pass to the export() method, you can specify a ScalingPolicy argument to disable that, and/or a scaling factor for more fine-grained control. See the ExportFormat(ExportDocumentFormat, ImageFileFormat, ScalingPolicy, Integer) constructor. The release notes for 5.1.1 has some more details about this: https://www.eclipse.org/sirius/doc/Release_Notes.html#sirius5.1.1

Re: View/Open Diagram in a SWT shell [message #1785019 is a reply to message #1784939]

Sat, 07 April 2018 08:33

Eclipse User

Thanks Pierre-Charles, changing the resolution worked.

However, when I was playing around with the Sirius API , I found that the editor could *somehow* be shown in a shell (see the image). But, the issue is that it will be very small and will not be resized to the parent shell, which I guess is because of the shell layout. But, as you can see in my code, I used openEditor, which opens and returns IEditorPart. Is there any other way to just get the IEditorPart and not opening it ? Have you seen anything like this before ?
index.php/fa/32551/0/

My code is:

IEditorPart editor =  DialectUIManager.INSTANCE.openEditor(session, current_representation, new NullProgressMonitor());

editor.createPartControl(parent); //parent is my created shell

Attachment: editor_in_shell.png
(Size: 5.02KB, Downloaded 364 times)

[Updated on: Sat, 07 April 2018 08:40] by Moderator

Re: View/Open Diagram in a SWT shell [message #1785100 is a reply to message #1785019]

Mon, 09 April 2018 09:36

Eclipse User

This seems more like an SWT/JFace issue due to the layout configuration used in the widget hierarchy. Note however that even if you find a way to make the whole editor visible, embedding an IEditor in general, and a Sirius one in particular, inside a plain SWT shell is not supported. It might give the first impression that some parts work, but outside of the normal context of a full Eclipse Workbench a lot of things will probably break more or less obviously.

In short, at this time Sirius representations can only be opened inside full-blown editors, and these must be integrated inside the Eclipse workbench to work correctly. We certainly agree that more flexibility on these aspects would be nice, but working on this is not in our priorities at the moment.

Re: View/Open Diagram in a SWT shell [message #1785104 is a reply to message #1785100]

Mon, 09 April 2018 10:00

Eclipse User

Thanks Pierre-Charels. You are right, I noticed that it is not completely functional. I found that it is better to open the editor but maybe in the bottom view (I mean the section at the bottom of the page and not at the top). since I can manually drag the editor from top to bottom, I think it should also be programatically doable. I guess I will ask about the editors in SWT/JFace forums.

Bests,
Parsa

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