BlogJava-学无止境-随笔分类-Eclipse GEFhttp://www.blogjava.net/lucia/category/3261.htmlzh-cnThu, 08 Mar 2007 02:40:28 GMTThu, 08 Mar 2007 02:40:28 GMT60How to add zoom function into your eclipse plugin?http://www.blogjava.net/lucia/archive/2005/10/25/16814.htmllucialuciaTue, 25 Oct 2005 15:38:00 GMThttp://www.blogjava.net/lucia/archive/2005/10/25/16814.htmlhttp://www.blogjava.net/lucia/comments/16814.htmlhttp://www.blogjava.net/lucia/archive/2005/10/25/16814.html#Feedback0http://www.blogjava.net/lucia/comments/commentRss/16814.htmlhttp://www.blogjava.net/lucia/services/trackbacks/16814.html 1. Add the action into the toolbar:
...in Class: ActionBarContributor...
    ...in Method: contributeToToolBar...
        toolBarManager.add(getAction(GEFActionConstants.ZOOM_IN));
        toolBarManager.add(getAction(GEFActionConstants.ZOOM_OUT));
        toolBarManager.add(new ZoomComboContributionItem(getPage()));

2. Connect the Zoom Manager with your edit part:
...in Class: YourEditor...
    ...in Method: configureGraphicalViewer...
        ScalableFreeformRootEditPart rootEditPart= new ScalableFreeformRootEditPart();
        getGraphicalViewer().setRootEditPart(rootEditPart);

        ZoomManager manager = rootEditPart.getZoomManager();
        IAction action = new ZoomInAction(manager);
        getActionRegistry().registerAction(action);
        action = new ZoomOutAction(manager);
        getActionRegistry().registerAction(action);

        //define the zoom possibilities
        double[] zoomLevels = new double[] {0.25,0.5,0.75,1.0,1.5,2.0,2.5,3.0,4.0};
        manager.setZoomLevels(zoomLevels);
   ...in Method: getAdapter...
        if (type == ZoomManager.class)
              return ((ScalableFreeformRootEditPart) getGraphicalViewer().
                        getRootEditPart()).getZoomManager();

That's all! Now you have two buttons to zoom in and zoom out. And you can see the zoom level in percent.  With the example here you  can change  zoom level from 25% to 400%.



lucia 2005-10-25 23:38 发表评论
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