Examples of org.eclipse.zest.layouts.LayoutAlgorithm

org.eclipse.zest.layouts.LayoutAlgorithm
A simple interface used by all layouts. Each layout Algorithm must implement the applyLayoutInternal method which actually compute the layout @author Casey Best @author Ian Bull

    lblProgress = new Label(mainShell, SWT.NONE);
    lblProgress.setLayoutData(progressGridData);
    lblProgress.setText("Progress: ");


    for (int i = 0; i < algorithms.size(); i++) {
      final LayoutAlgorithm algorithm = (LayoutAlgorithm) algorithms.get(i);
      String algorithmName = (String) algorithmNames.get(i);
      final boolean algorithmAnimate = ((Boolean) algorithmAnimates.get(i)).booleanValue();
      ToolItem algorithmButton = new ToolItem(toolBar, SWT.PUSH);
      algorithmButton.setText(algorithmName);


      new ToolItem(toolBar, SWT.SEPARATOR);


      algorithmButton.addSelectionListener(new SelectionListener() {
        public void widgetSelected(org.eclipse.swt.events.SelectionEvent e) {
          currentLayoutAlgorithm = algorithm;
          algorithm.setEntityAspectRatio((double) mainComposite.getClientArea().width / (double) mainComposite.getClientArea().height);
          animate = algorithmAnimate;
          performLayout(false);
        }


        public void widgetDefaultSelected(org.eclipse.swt.events.SelectionEvent e) {

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          addAlgorithm(GRID, "Grid", false);
          addAlgorithm(HORIZ, "Horiz", false);
          addAlgorithm(VERT, "Vert", false);


          for (int i = 0; i < algorithms.size(); i++) {
            final LayoutAlgorithm algorithm = (LayoutAlgorithm) algorithms.get(i);
            final String algorithmName = (String) algorithmNames.get(i);
            //final boolean algorithmAnimate = ((Boolean)algorithmAnimates.get(i)).booleanValue();
            JButton algorithmButton = new JButton(algorithmName);
            algorithmButton.addActionListener(new ActionListener() {
              public void actionPerformed(ActionEvent e) {
                currentLayoutAlgorithm = algorithm;
                currentLayoutAlgorithmName = algorithmName;
                algorithm.setEntityAspectRatio((double) mainPanel.getWidth() / (double) mainPanel.getHeight());
                //animate = algorithmAnimate;
                performLayout();
              }
            });
            toolBar.add(algorithmButton);

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    graphSeparator.setVisible(false);
    manager.add(graphSeparator);
  }
  
  private LayoutAlgorithm setLayout() {
    LayoutAlgorithm layout;
    layout = new CompositeLayoutAlgorithm(LayoutStyles.NO_LAYOUT_NODE_RESIZING, 
        new  LayoutAlgorithm[] {
          new TreeLayoutAlgorithm(LayoutStyles.NO_LAYOUT_NODE_RESIZING), 
          new HorizontalShift(LayoutStyles.NO_LAYOUT_NODE_RESIZING) });
    return layout;

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    viewer.setConnectionStyle(ZestStyles.CONNECTIONS_DIRECTED);
    // switch off the animation
    viewer.setNodeStyle(ZestStyles.NODES_NO_ANIMATION);
    
    LayoutAlgorithm layout = new DirectedDiagramViewLayoutAlgorithm(SWT.VERTICAL | LayoutStyles.NO_LAYOUT_NODE_RESIZING | LayoutStyles.ENFORCE_BOUNDS);
    viewer.setLayoutAlgorithm(layout);
    
//    viewer.setLayoutAlgorithm(new CompositeLayoutAlgorithm(SWT.VERTICAL | LayoutStyles.NO_LAYOUT_NODE_RESIZING | LayoutStyles.ENFORCE_BOUNDS, 
//        new LayoutAlgorithm[] { 
//          new DirectedGraphLayoutAlgorithm(SWT.VERTICAL | LayoutStyles.NO_LAYOUT_NODE_RESIZING | LayoutStyles.ENFORCE_BOUNDS),

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