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Getting the Position of an Editor [message #1016674]

Thu, 07 March 2013 05:33

Eclipse User

I tried several things, but sadly none of them seem to work how i need it to.

        final IWorkbenchPart activePart = PlatformUI.getWorkbench()
            .getActiveWorkbenchWindow().getActivePage().getActivePart();
        WorkflowEditor editor = (WorkflowEditor) activePart;      
        GraphicalViewer viewer = editor.getViewer();
        FigureCanvas figure = ((FigureCanvas) viewer.getControl());

        figure.getBounds().x
        figure.getViewport().getClientArea().x
        figure.getShell().getBounds().x
        figure.getLocation().x

all of these returns just give me the position of the application itself or just 0.

But what i figured out, when i add a MouseListener to the "figure", the MouseEvents give me the Positions i need.

        figure.addMouseMoveListener(new MouseMoveListener() {   
            @Override
            public void mouseMove(MouseEvent arg0) {
                // TODO Auto-generated method stub
                offsetx = MouseInfo.getPointerInfo().getLocation().x - arg0.x;
                offsety = MouseInfo.getPointerInfo().getLocation().y - arg0.y;
                
            }
        });

I need a way to get these informations. Is it possible to get the informations the MouseEvent has, without using an EventListener?

Re: Getting the Position of an Editor [message #1016915 is a reply to message #1016674]

Fri, 08 March 2013 03:14

Eclipse User

From a TextEditor, you can get the document, document provider, and selection. That will give you access to the current cursor offset.

ITextEditor editor = (ITextEditor) editorPart
.getAdapter(ITextEditor.class);
IDocumentProvider provider = editor.getDocumentProvider();
IDocument document = provider.getDocument(editorPart
.getEditorInput());
ITextSelection textSelection = (ITextSelection) editorPart
.getSite().getSelectionProvider().getSelection();
int offset = textSelection.getOffset();
int lineNumber = document.getLineOfOffset(offset);

IDocument provides other methods to get the starts of lines (you can calculate the column from that).

I got this for one of the forum...

Re: Getting the Position of an Editor [message #1017277 is a reply to message #1016674]

Mon, 11 March 2013 08:57

Eclipse User

Thanks for your help. But I think you misunderstood me, What I need is not the current Cursor Position.

The thing with the mouseListener is just a super ugly workaround that does "work", because arg0.x hast the relative position of the cursor to the Editor and MouseInfo gets me the relative position to the whole application. Subtracting the 2 values gives me what i need: the relative position of the Editor to the Application.

The Editor is not a TextEditor so your suggestion doesnt work for me.

Thanks.

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