Java 类org.eclipse.gef.ui.actions.ToggleSnapToGeometryAction 实例源码

@Override
protected void configureGraphicalViewer() {
    super.configureGraphicalViewer();
    ScalableFreeformRootEditPart rootEditPart = new ScalableFreeformRootEditPart();

    GraphicalViewer viewer = getGraphicalViewer();
    viewer.setRootEditPart(rootEditPart);
    getGraphicalViewer().setEditPartFactory(
            new DesignerEditPartFactory(getParentEditor()));
    configureEditPartViewer(viewer);
    ((FigureCanvas) viewer.getControl())
            .setScrollBarVisibility(FigureCanvas.ALWAYS);
    getActionRegistry().registerAction(
            new ToggleGridAction(getGraphicalViewer()));
    getActionRegistry().registerAction(
            new ToggleSnapToGeometryAction(getGraphicalViewer()));
}

protected void configureGraphicalViewer() {
    super.configureGraphicalViewer();

    double[] zoomLevels;
    List<String> zoomContributions;

    GraphicalViewer viewer = getGraphicalViewer();
    viewer.setEditPartFactory(gw4eEditPartFactory);

    keyHandler = new KeyHandler();

    keyHandler.put(KeyStroke.getPressed(SWT.DEL, 127, 0),
            getActionRegistry().getAction(ActionFactory.DELETE.getId()));

    keyHandler.put(KeyStroke.getPressed(SWT.F2, 0), getActionRegistry().getAction(GEFActionConstants.DIRECT_EDIT));

    keyHandler.put(KeyStroke.getPressed('+', SWT.KEYPAD_ADD, 0),
            getActionRegistry().getAction(GEFActionConstants.ZOOM_IN));

    keyHandler.put(KeyStroke.getPressed('-', SWT.KEYPAD_SUBTRACT, 0),
            getActionRegistry().getAction(GEFActionConstants.ZOOM_OUT));

    getGraphicalViewer().setKeyHandler(new GraphicalViewerKeyHandler(getGraphicalViewer()).setParent(keyHandler));

    ScalableRootEditPart rootEditPart = new ScalableRootEditPart();
    viewer.setRootEditPart(rootEditPart);

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

    zoomLevels = new double[] { 0.25, 0.5, 0.75, 1.0, 1.5, 2.0, 2.5, 3.0, 4.0, 5.0, 10.0, 20.0 };
    manager.setZoomLevels(zoomLevels);

    zoomContributions = new ArrayList<String>();
    zoomContributions.add(ZoomManager.FIT_ALL);
    zoomContributions.add(ZoomManager.FIT_HEIGHT);
    zoomContributions.add(ZoomManager.FIT_WIDTH);
    manager.setZoomLevelContributions(zoomContributions);

    getActionRegistry().registerAction(new ToggleGridAction(getGraphicalViewer()));
    getActionRegistry().registerAction(new ToggleSnapToGeometryAction(getGraphicalViewer()));
    getActionRegistry().registerAction(new ClearEdgeBendpointLayoutAction(this));

    ContextMenuProvider provider = new ContextMenuProvider(this, viewer, getActionRegistry());
    viewer.setContextMenu(provider);
}