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Making a Node not resizable [message #653644]

Thu, 10 February 2011 09:19

Eclipse User

Hi,

I have a GMF-based graphical editor in my RCP application, which displays some figures and connectors: for my needs, I have to forbid the resizing of figures...anybody knows how can I reach this goal?

Thanx,
Giovanni

Re: Making a Node not resizable [message #653671 is a reply to message #653644]

Thu, 10 February 2011 11:13

Eclipse User

I found a solution by myself: I installed a new ComponentEditPolicy in my editPart, with the following lines:

if (RequestConstants.REQ_RESIZE.equals(request.getType())) {
return org.eclipse.gef.commands.UnexecutableCommand.INSTANCE;

Maybe this can help,

Regards
Giovanni

Re: Making a Node not resizable [message #654200 is a reply to message #653671]

Mon, 14 February 2011 10:02

Eclipse User

Hi,

I have the following code based on your experiences:

installEditPolicy(ComponentEditPolicy.REQ_RESIZE, new ComponentEditPolicy(){
  @Override
  public Command getCommand(Request request) {
    if (RequestConstants.REQ_RESIZE.equals(request.getType())) 
      return org.eclipse.gef.commands.UnexecutableCommand.INSTANCE;

     return super.getCommand(request);
  }
});

But this does not hide the resize handles, when the edit part is selected. Any idea on how to remove those?

Thanks!

Ralph

Re: Making a Node not resizable [message #654206 is a reply to message #654200]

Mon, 14 February 2011 10:16

Eclipse User

Hi Ralph,

the most rapid way to suite your needs is working at "Preference" level:
in your DiagramGeneralPreferencePage.class you add the following:

/**
* Override default values for popup and connection handles
* @param preferenceStore
*/
public static void overrideDefaultValues(IPreferenceStore preferenceStore) {
preferenceStore.setDefault(IPreferenceConstants.PREF_SHOW_CO NNECTION_HANDLES, false);
preferenceStore.setDefault(IPreferenceConstants.PREF_SHOW_PO PUP_BARS, false);
}

and, in your DiagramPreferenceInitializer.class, you call it:

/**
* @generated NOT
*/
public void initializeDefaultPreferences() {
IPreferenceStore store = getPreferenceStore();
DiagramGeneralPreferencePage.initDefaults(store);
/**
* Eliminate popup and connection handles
*/
DiagramGeneralPreferencePage.overrideDefaultValues(store);
DiagramAppearancePreferencePage.initDefaults(store);
DiagramConnectionsPreferencePage.initDefaults(store);
DiagramPrintingPreferencePage.initDefaults(store);
DiagramRulersAndGridPreferencePage.initDefaults(store);

}

Hope this helps, bye

Giovanni

Re: Making a Node not resizable [message #654211 is a reply to message #654206]

Mon, 14 February 2011 10:29

Eclipse User

Hi,

I will try your solutions. A few seconds ago I found the posibilty to override this method in the edit part

@Override
public EditPolicy getPrimaryDragEditPolicy() {
  return new NonResizableEditPolicyEx(); 
}

Ralph

Re: Making a Node not resizable [message #654215 is a reply to message #654211]

Mon, 14 February 2011 10:42

Eclipse User

Really better, thanks.

Bye,
Giovanni.

Re: Making a Node not resizable [message #655392 is a reply to message #654215]

Sun, 20 February 2011 09:12

Eclipse User

Hi,

you might also try this.

Switch of resizing:

removeEditPolicy(EditPolicy.PRIMARY_DRAG_ROLE);
installEditPolicy(EditPolicy.PRIMARY_DRAG_ROLE, new NonResizableEditPolicyEx());

Switch on resizing:

removeEditPolicy(EditPolicy.PRIMARY_DRAG_ROLE);
installEditPolicy(EditPolicy.PRIMARY_DRAG_ROLE, new ResizableShapeEditPolicy());

Ralph

[Updated on: Sun, 20 February 2011 09:12] by Moderator

Re: Making a Node not resizable [message #1075375 is a reply to message #655392]

Mon, 29 July 2013 06:17

Eclipse User

Hi all
I' have a similar problem. I want to hide all the resize/vertices point from the node when it is selected (by mouse click),, but shape should be able to move.
As an example i want to remove all 8 rectangular shape handlers in "A Topic" shape in following figure

http://wiki.eclipse.org/Image:Basic_mindmap.png

installEditPolicy(EditPolicy.PRIMARY_DRAG_ROLE, new NonResizableEditPolicyEx()); was worked fine and was able to remove the resize handlers in East, West, North and South directions.
But how to remove corner points of the shape. Is this possible? Any idea

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