Example #1
0
  public void loadFile(String filename, Graph graph) {
    try {
      File fname = new File(filename);
      int size = (int) fname.length();
      int bytes_read = 0;
      FileInputStream infile = new FileInputStream(fname);
      byte[] data = new byte[size];
      while (bytes_read < size) bytes_read += infile.read(data, bytes_read, size - bytes_read);

      StringBufferInputStream stream = new StringBufferInputStream(new String(data, 0));
      GMLlexer lexer = new GMLlexer(stream);

      try {
        GMLfile_ = new GMLobject(lexer, null);
        GMLobject gmlgraph = GMLfile_.getGMLSubObject("graph", GMLobject.GMLlist, false);
        if (gmlgraph == null) {
          GMLfile_ = null;
          new MessageDialog(this, "Error", "File does not contain a graph.", true);
          return;
        }

        Graph newgraph = null;

        newgraph = new Graph(gmlgraph);
        graph_.copy(newgraph);
        graph.copy((Graph) graph_.clone());
        // graphCanvas_.update(true);

        // filename_ = filename;
        // setTitle_();
      } catch (ParseError error) {
        new MessageDialog(
            this,
            "Error",
            error.getMessage()
                + " at line "
                + lexer.getLineNumber()
                + " at or near \""
                + lexer.getStringval()
                + "\".",
            true);
        return;
      } catch (IOException error) {
        MessageDialog dg = new MessageDialog(this, "Error", error.getMessage(), true);
        return;
      }
    } catch (FileNotFoundException e) {
      MessageDialog dg =
          new MessageDialog(this, "Error", "Error loading file  \"" + filename + "\".", true);
    } catch (IOException e) {
      MessageDialog dg = new MessageDialog(this, "Error", e.getMessage(), true);
    }
  }
Example #2
0
  private void applyAlgorithm_(GraphAlgorithm alg) {
    if (graph_.numberOfNodes() < 1) new MessageDialog(this, "Error", "Graph is empty.", true);
    else {
      graph_.removeGroups(); // Remove group nodes.
      graph_.pack(); // Pack the indexes.

      String msg;
      graphCanvas_.setWireframe(true);
      msg = alg.compute(graph_, graphCanvas_);
      graphCanvas_.setWireframe(false);

      if (msg != null) new MessageDialog(this, "Message", msg, true);

      graphCanvas_.update(true);
    }
  }
Example #3
0
 //  mod
 private Graph getGraphCopy() {
   return (Graph) graph_.clone();
 }
Example #4
0
  public boolean handleEvent(Event event) {
    if (event.target instanceof ScrolledPanel) {
      if (event.id == ScrolledPanel.RESIZE)
      // RESIZE event from panel.
      {
        DDimension tmp_dim;

        tmp_dim = viewingPanel_.getPortSize();
        portScroller_.setPortSize(tmp_dim.width, tmp_dim.height);

        tmp_dim = viewingPanel_.getContentSize();
        portScroller_.setContentSize(tmp_dim.width, tmp_dim.height);

        tmp_dim = viewingPanel_.getOffset();
        portScroller_.setOffset(tmp_dim.width, tmp_dim.height);

        return true;
      } else if (event.id == ScrolledPanel.OFFSET) {
        DDimension tmp_dim = viewingPanel_.getOffset();
        portScroller_.setOffset(tmp_dim.width, tmp_dim.height);

        return true;
      }
    } else if (event.target instanceof ViewportScroller) {
      if (event.id == ViewportScroller.SCROLL) {
        graphCanvas_.setWireframe(true);
        viewingPanel_.scrollTo((int) portScroller_.getOffsetX(), (int) portScroller_.getOffsetY());
      }
      if (event.id == ViewportScroller.DONE) {
        graphCanvas_.setWireframe(false);
        viewingPanel_.scrollTo((int) portScroller_.getOffsetX(), (int) portScroller_.getOffsetY());
      }
    } else if (event.target instanceof AngleControlPanel) {
      if (event.id == AngleControlPanel.ANGLE) {
        DPoint angles = (DPoint) event.arg;

        graphCanvas_.setWireframe(true);
        graphCanvas_.setViewAngles(angles.x, angles.y);
      }
      if (event.id == AngleControlPanel.DONE) {
        DPoint angles = (DPoint) event.arg;

        graphCanvas_.setWireframe(false);
        graphCanvas_.setViewAngles(angles.x, angles.y);
      }
    } else if (event.target instanceof GraphCanvas)
    // Graph has changed.
    {
      if (event.id == GraphCanvas.UPDATE) {
        cbmiDirected_.setState(graph_.isDirected());
      }
    }
    // quit from Window Manager menu
    else if (event.id == Event.WINDOW_DESTROY) {
      Destroy();
      return false;
    }

    // call inherited handler
    return super.handleEvent(event);
  }
Example #5
0
  public boolean action(Event event, Object what) {
    if (event.target instanceof Checkbox) {
      CheckboxGroup cbgrp = ((Checkbox) (event.target)).getCheckboxGroup();
      Checkbox selected = cbgrp.getCurrent();
      String label = selected.getLabel();

      int mode = GraphCanvas.CREATE_NODES;
      if (label.equals("Create Edges")) mode = GraphCanvas.CREATE_EDGES;
      else if (label.equals("Select Nodes")) mode = GraphCanvas.SELECT_NODES;
      else if (label.equals("Select Edges")) mode = GraphCanvas.SELECT_EDGES;
      else if (label.equals("Select Nodes or Edges")) mode = GraphCanvas.SELECT_BOTH;

      graphCanvas_.setMouseMode(mode);
    } else if (event.target instanceof CheckboxMenuItem) {
      String label = ((CheckboxMenuItem) (event.target)).getLabel();
      boolean state = ((CheckboxMenuItem) (event.target)).getState();

      if (label.equals("Scale Node Size")) graphCanvas_.scaleBounds(state);
      else if (label.equals("Show Controls  [s]")) {
        if (state) controls_.show();
        else controls_.hide();
        validate();
      } else if (label.equals("Directed")) graphCanvas_.setDirected(state);
      else if (label.equals("Use Node ID As Default Label")) {
        Node.setDefaultLabel(state);
        graphCanvas_.update(false);
      } else if (label.equals("High Quality Display"))
        graphCanvas_.setQuality(state == false ? 1 : 2);
    } else if (event.target instanceof MenuItem) {
      GraphAlgorithm alg;

      MenuItem menuitem = (MenuItem) event.target;

      alg = (GraphAlgorithm) algHashTable_.get(menuitem);
      if (alg != null) {
        applyAlgorithm_(alg);
      } else {
        String label = menuitem.getLabel();

        if (label.equals("Open Example Graph")) {
          URL src = null;
          try {
            src = new URL(context_, "example.gml");
            InputStream strm = src.openStream();
            GMLlexer lexer = new GMLlexer(strm);
            GMLfile_ = new GMLobject(lexer, null);
            GMLobject gmlgraph = GMLfile_.getGMLSubObject("graph", GMLobject.GMLlist, false);

            Graph newgraph = null;
            newgraph = new Graph(gmlgraph);
            graph_.copy(newgraph);
            graphCanvas_.update(true);

            filename_ = null;
            setTitle_();
          } catch (Exception e) {
            new MessageDialog(this, "Error", "Error loading example graph.", true);
          }
          ;

        } else if (label.equals("Open (GML)")) {
          String filename = null;

          FileDialog fd;
          try {
            fd = new FileDialog(this, "Open VGJ File (GML)", FileDialog.LOAD);
            fd.show();
          } catch (Throwable e) {
            MessageDialog dg =
                new MessageDialog(
                    this, "Error", "It appears your VM does not allow file loading.", true);
            return true;
          }
          filename = fd.getFile();
          if (filename == null) return true;
          filename = fd.getDirectory() + filename;

          loadFile(filename);
          return true;
        } else if (label.equals("Save (GML)") || label.equals("Save As (GML)")) {
          try {
            String filename;
            if (label.equals("Save As (GML)") || filename_ == null) {
              FileDialog fd;
              try {
                fd = new FileDialog(this, "Save VGJ File (GML)", FileDialog.SAVE);
                fd.show();
              } catch (Throwable e) {
                MessageDialog dg =
                    new MessageDialog(
                        this, "Error", "It appears your VM does not allow file saving.", true);
                return true;
              }

              filename = fd.getFile();
              if (filename == null) return true;

              // Work around JDK Windows bug.
              if (filename.endsWith(".*.*")) {
                String tmpstr = filename.substring(0, filename.length() - 4);
                filename = tmpstr;
              }
              filename = fd.getDirectory() + filename;
            } else filename = filename_;

            PrintStream ps = new PrintStream(new FileOutputStream(filename));
            if (GMLfile_ == null) {
              GMLfile_ = new GMLobject(null, GMLobject.GMLfile);
              GMLfile_.addObjectToEnd(new GMLobject("graph", GMLobject.GMLlist));
            }
            GMLobject gmlgraph = GMLfile_.getGMLSubObject("graph", GMLobject.GMLlist, false);
            graph_.setGMLvalues(gmlgraph);
            gmlgraph.prune();

            ps.println(GMLfile_.toString(0));
            ps.close();

            filename_ = filename;
            setTitle_();
          } catch (IOException e) {
            MessageDialog dg = new MessageDialog(this, "Error", e.getMessage(), true);
          }

        } else if (label.equals("Exit This Window")) Destroy();
        else if (label.startsWith("Exit Application")) System.exit(0);
        else if (label.equals("Delete Selected Items")) graphCanvas_.deleteSelected(true);
        else if (label.equals("Select All")) graphCanvas_.selectAll();
        else if (label.equals("Remove All Edge Bends")) graphCanvas_.removeEdgeBends();
        else if (label.equals("Remove All Groups")) graphCanvas_.removeGroups();
        else if (label.equals("Group Control")) {
          if (groupControl_ == null) groupControl_ = new GroupControl(this, graphCanvas_);
          else groupControl_.showMe();
        } else if (label.equals("Set New Node Properties")) graphCanvas_.setNodeProperties(true);
        else if (label.equals("Set Node Spacing")) {
          if (algPropDialog_ == null) algPropDialog_ = new AlgPropDialog(this, graphCanvas_);
          else algPropDialog_.showMe();
        } else if (label.equals("Set Font")) {
          if (fontPropDialog_ == null) fontPropDialog_ = new FontPropDialog(this, graphCanvas_);
          else fontPropDialog_.showMe();
        } else if (label.equals("Edit Text Representation (GML)")) {
          graphCanvas_.unselectItems();
          GraphEdit ge = new GraphEdit(graph_, graphCanvas_);
          ge.pack();
          ge.show();
        } else if (label.equals("PostScript Output")) {
          if (psDialog_ == null) psDialog_ = new PSdialog(this, graphCanvas_);
          else {
            psDialog_.pack();
            psDialog_.show();
          }
        }
      }
    } else if (event.target instanceof Button) {
      if (((String) what).equals("Scale / 2") // mod
          || ((String) what).equals("Zoom Out") // mod
      ) // mod
      {
        // scale_ /= 2.0;        // mod
        scale_ /= 1.2;
        graphCanvas_.setScale(scale_);

        scaleLabel_.setText("Scale: " + scale_);
      } else if (((String) what).equals("Scale * 2") // mod
          || ((String) what).equals("Zoom In") // mod
      ) // mod
      {
        // scale_ *= 2.0;       // mod
        scale_ *= 1.2;
        graphCanvas_.setScale(scale_);

        scaleLabel_.setText("Scale: " + scale_);
      } else if (((String) what).equals("Scale = 1")) {
        scale_ = 1.0;
        graphCanvas_.setScale(scale_);

        scaleLabel_.setText("Scale: " + scale_);
      } else if (((String) what).equals("Center")) {
        DDimension port_dim = viewingPanel_.getPortSize();
        DDimension cont_dim = viewingPanel_.getContentSize();

        double x = (cont_dim.width - port_dim.width) / 2.0;
        double y = (cont_dim.height - port_dim.height) / 2.0;

        viewingPanel_.scrollTo((int) x, (int) y);
        portScroller_.setOffset(x, y);
      } else if (((String) what).equals("Update")) {
        System.out.println("Update button pressed. " + myAction);
        if (myAction != null) {
          System.out.println("Performing action.");
          myAction.execute();
        }
      }
    }
    return true;
  }
Example #6
0
  private void construct(Graph graph_in) {
    algHashTable_ = new Hashtable();
    algNameHashTable_ = new Hashtable();
    menuHashTable_ = new Hashtable();
    boolean emptyGraph = true;
    if (graph_in != null && graph_in.numberOfNodes() > 0) {
      emptyGraph = false;
    }

    // create menus

    boolean directed = graph_in.isDirected();

    MenuBar menubar = new MenuBar();
    Menu menu = new Menu("File");

    menu.add(new MenuItem("Open (GML)"));
    menu.add(new MenuItem("Save (GML)"));
    menu.add(new MenuItem("Save As (GML)"));

    menu.add(new MenuItem("-"));
    menu.add(new MenuItem("Open Example Graph"));
    menu.add(new MenuItem("-"));
    menu.add(new MenuItem("PostScript Output"));

    menu.add(new MenuItem("-"));
    menu.add(new MenuItem("Exit This Window"));
    menu.add(new MenuItem("Exit Application (and COUGAAR Node)"));

    menubar.add(menu);

    algorithmMenu_ = new Menu("Algorithms");
    menubar.add(algorithmMenu_);

    menu = new Menu("Edit");
    menu.add(new MenuItem("Edit Text Representation (GML)"));
    menu.add(new MenuItem("Delete Selected Items"));
    menu.add(new MenuItem("Select All"));
    menu.add(new MenuItem("Remove All Edge Bends"));
    menu.add(new MenuItem("Remove All Groups"));
    menu.add(new MenuItem("Group Control"));
    menubar.add(menu);

    menu = new Menu("Properties");

    showControls_ = new CheckboxMenuItem("Show Controls  [s]");
    showControls_.setState(true);
    // showControls_.setState(false);
    menu.add(showControls_);

    CheckboxMenuItem cbmi = new CheckboxMenuItem("Directed");
    cbmiDirected_ = cbmi;
    if (directed) cbmi.setState(true);
    menu.add(cbmi);

    menu.add(new MenuItem("Set New Node Properties"));
    menu.add(new MenuItem("Set Node Spacing"));
    menu.add(new MenuItem("Set Font"));

    cbmi = new CheckboxMenuItem("Scale Node Size");
    cbmi.setState(true);
    menu.add(cbmi);

    cbmi = new CheckboxMenuItem("Use Node ID As Default Label");
    cbmi.setState(true);
    menu.add(cbmi);

    cbmi = new CheckboxMenuItem("High Quality Display");
    // cbmi.setState(false);
    cbmi.setState(true);
    menu.add(cbmi);

    menubar.add(menu);

    setMenuBar(menubar);

    setLayout(new BorderLayout());

    // panel for controls

    LPanel p = new LPanel();
    LPanel smallPanel = new LPanel(); // mod
    LPanel p1 = new LPanel(); // mod
    // let's try this
    p1.setLayout(new FlowLayout()); // mod

    p1.addButton("Update", 1, -1, 1.0, 1.0, 0, 0); // mod
    smallPanel.addButton("Update", 1, -1, 1.0, 1.0, 0, 0); // mod

    p.addLineLabel("Mouse Action:", 0);
    CheckboxGroup mode_group = new CheckboxGroup();
    p.constraints.insets.bottom = 0;
    p.addCheckbox("Create Nodes", mode_group, emptyGraph, 1, -1, 1.0, 1.0, 0, 0);
    p.addCheckbox("Create Edges", mode_group, false, 0, -1, 1.0, 1.0, 0, 0);
    p.constraints.insets.top = p.constraints.insets.bottom = 0;
    p.addCheckbox("Select Nodes", mode_group, !emptyGraph, 1, -1, 1.0, 1.0, 0, 0);
    p.addCheckbox("Select Edges", mode_group, false, 0, -1, 1.0, 1.0, 0, 0);
    p.constraints.insets.top = p.constraints.insets.bottom = 0;
    p.addCheckbox("Select Nodes or Edges", mode_group, false, 0, -1, 1.0, 1.0, 0, 0);

    p1.add(p); // mod
    p = new LPanel(); // mod
    portScroller_ = new ViewportScroller(90, 90, 500.0, 500.0, 400.0, 400.0, 0.0, 0.0);
    portScroller_.setBackground(Color.lightGray);

    p.constraints.insets.bottom = 0;
    p.addLabel("Viewing Offset", 0, 0, 1.0, 1.0, 0, 0);
    p.constraints.insets.top = p.constraints.insets.bottom = 0;
    p.addComponent(portScroller_, 0, 0, 1.0, 1.0, 0, 0);
    p.constraints.insets.top = p.constraints.insets.bottom = 0;
    p.addButton("Center", 0, 0, 1.0, 1.0, 0, 0);

    p1.add(p); // mod
    p = new LPanel(); // mod

    scaleLabel_ = p.addLineLabel("Scale: 1", 0);

    LPanel sp = new LPanel();
    sp.spacing = 0;
    sp.constraints.insets.top = sp.constraints.insets.bottom = 0;
    // sp.addButton("Scale / 2", 1, -1, 1.0, 1.0, 0, 0);    // mod
    sp.addButton("Zoom In", 1, -1, 1.0, 1.0, 0, 0); // mod
    sp.addButton("Scale = 1", 1, -1, 1.0, 1.0, 0, 0);
    // sp.addButton("Scale * 2", 0, -1, 1.0, 1.0, 0, 0);     // mod
    sp.addButton("Zoom Out", 0, -1, 1.0, 1.0, 0, 0); // mod
    sp.finish();

    p.addComponent(sp, 0, 0, 1.0, 1.0, 0, 0);

    p1.add(p); // mod
    p = new LPanel(); // mod

    p.constraints.insets.top = 0;
    AngleControlPanel angc = new AngleControlPanel(180, 76);
    p.addComponent(angc, 0, 0, 1.0, 1.0, 1, 0);

    p1.add(p); // mod
    p = p1; // mod

    // super panel is there just to allow controls to be
    // fixed to top instead of centered
    // Panel controls_superpanel = new Panel();
    JPanel controls_superpanel = new JPanel();

    controls_superpanel.add("North", p);
    p.finish();
    // add("West", controls_superpanel);
    if (wantSmallPanel) {
      add("South", smallPanel); // mod
      controls_ = smallPanel; // mod
    } else {
      add("South", controls_superpanel); // mod
      controls_ = controls_superpanel;
    }
    if (!showControls_.getState()) {
      controls_.hide();
    } else {
      controls_.show();
    }

    graph_ = graph_in;

    // Node.defaults.setBoundingBox(20, 20, 20);
    // Node.defaults.setBoundingBox(10, 10, 10);
    Node.defaults.setBoundingBox(130, 90, 130);

    // the graph viewing canvas
    graphCanvas_ = new GraphCanvas(graph_, this);

    if (!emptyGraph) {
      graphCanvas_.setMouseMode(GraphCanvas.SELECT_NODES);
    }

    // the graph viewing panel (canvas and scrollbars)
    viewingPanel_ = new ScrolledPanel(graphCanvas_);
    add("Center", viewingPanel_);
    setBackground(Color.lightGray);
    validate();

    addKeyListener(
        new KeyAdapter() {
          public void keyReleased(KeyEvent e) {
            System.out.println("in GW.keyReleased");
            if (e.getKeyChar() == 's' || e.getKeyChar() == 'S') {
              System.out.println("Keyrelease " + e.getKeyChar() + ".");
              showControls_.setState(!showControls_.getState());
            }
            if (showControls_.getState()) controls_.show();
            else controls_.hide();
            validate();
          }
        });
  }