Examples of mxGraphView

com.mxgraph.view.mxGraphView
Implements a view for the graph. This class is in charge of computing the absolute coordinates for the relative child geometries, the points for perimeters and edge styles and keeping them cached in cell states for faster retrieval. The states are updated whenever the model or the view state (translate, scale) changes. The scale and translate are honoured in the bounds. This class fires the following events: mxEvent.UNDO fires after the root was changed in setCurrentRoot. The edit property contains the mxUndoableEdit which contains the mxCurrentRootChange. mxEvent.SCALE_AND_TRANSLATE fires after the scale and transle have been changed in scaleAndTranslate. The scale, previousScale, translate and previousTranslate properties contain the new and previous scale and translate, respectively. mxEvent.SCALE fires after the scale was changed in setScale. The scale and previousScale properties contain the new and previous scale. mxEvent.TRANSLATE fires after the translate was changed in setTranslate. The translate and previousTranslate properties contain the new and previous value for translate. mxEvent.UP and mxEvent.DOWN fire if the current root is changed by executing a mxCurrentRootChange. The event name depends on the location of the root in the cell hierarchy with respect to the current root. The root and previous properties contain the new and previous root, respectively.

Examples of com.mxgraph.view.mxGraphView

   *            Object that represents the global validation state.
   */
  public String validateGraph(Object cell, Hashtable<Object, Object> context)
  {
    mxIGraphModel model = graph.getModel();
    mxGraphView view = graph.getView();
    boolean isValid = true;
    int childCount = model.getChildCount(cell);


    for (int i = 0; i < childCount; i++)
    {
      Object tmp = model.getChildAt(cell, i);
      Hashtable<Object, Object> ctx = context;


      if (graph.isValidRoot(tmp))
      {
        ctx = new Hashtable<Object, Object>();
      }


      String warn = validateGraph(tmp, ctx);


      if (warn != null)
      {
        String html = warn.replaceAll("\n", "<br>");
        int len = html.length();
        setCellWarning(tmp, html.substring(0, Math.max(0, len - 4)));
      }
      else
      {
        setCellWarning(tmp, null);
      }


      isValid = isValid && warn == null;
    }


    StringBuffer warning = new StringBuffer();


    // Adds error for invalid children if collapsed (children invisible)
    if (graph.isCellCollapsed(cell) && !isValid)
    {
      warning.append(mxResources.get("containsValidationErrors",
          "Contains Validation Errors") + "\n");
    }


    // Checks edges and cells using the defined multiplicities
    if (model.isEdge(cell))
    {
      String tmp = graph.getEdgeValidationError(cell,
          model.getTerminal(cell, true),
          model.getTerminal(cell, false));


      if (tmp != null)
      {
        warning.append(tmp);
      }
    }
    else
    {
      String tmp = graph.getCellValidationError(cell);


      if (tmp != null)
      {
        warning.append(tmp);
      }
    }


    // Checks custom validation rules
    String err = graph.validateCell(cell, context);


    if (err != null)
    {
      warning.append(err);
    }


    // Updates the display with the warning icons before any potential
    // alerts are displayed
    if (model.getParent(cell) == null)
    {
      view.validate();
    }


    return (warning.length() > 0 || !isValid) ? warning.toString() : null;
  }

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Examples of com.mxgraph.view.mxGraphView

          else
          {
            sy = 0;
          }


          mxGraphView view = graphComponent.getGraph().getView();
          double scale = view.getScale();
          double newScale = scale - (dx * scale) / w;
          double factor = newScale / scale;
          view.setScale(newScale);


          if (hs != null)
          {
            hs.setValue((int) (sx * hs.getMaximum() * factor));
          }

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Examples of com.mxgraph.view.mxGraphView


    mxGraphControl graphControl = graphComponent.getGraphControl();
    graphControl.addMouseListener(this);
    graphControl.addMouseMotionListener(this);


    mxGraphView view = graphComponent.getGraph().getView();
    view.addListener(mxEvent.SCALE, resetHandler);
    view.addListener(mxEvent.TRANSLATE, resetHandler);
    view.addListener(mxEvent.SCALE_AND_TRANSLATE, resetHandler);


    mxIGraphModel model = graphComponent.getGraph().getModel();
    model.addListener(mxEvent.CHANGE, resetHandler);


    marker = new mxCellMarker(graphComponent)

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Examples of com.mxgraph.view.mxGraphView

  
  public void center(Point2D center) {
    Dimension viewportSize = getViewport().getSize();
  
    Rectangle2D sceneRect = getGraph().getGraphBounds().getRectangle();
    mxGraphView graphView = getGraph().getView();
    final Dimension preferredSize = new Dimension(Math.max(
        (int) sceneRect.getWidth(), viewportSize.width), Math.max(
        (int) sceneRect.getHeight(), viewportSize.height));


    //mxPoint p = graphView.getTranslate();
    double x = -sceneRect.getX()
        + (preferredSize.getWidth() - sceneRect.getWidth()) / 2.0;
    double y = -sceneRect.getY()
        + (preferredSize.getHeight() - sceneRect.getHeight()) / 2.0;


    //TODO at this point the view should center on the traffic light - using the given center point
    graphView.setEventsEnabled(false);
    mxPoint translate = null;
    translate = new mxPoint(x, y);
    logger.info("TRANSLATE TO "+translate.getX()+"; "+translate.getY()+ " TEST");
//    translate = new mxPoint(p.getX() + x, p.getY() + y);
//    logger.info("TRANSLATE TO "+translate.getX()+"; "+translate.getY());
    
    graphView.setTranslate(translate);
    graphView.revalidate();
    graphView.setEventsEnabled(true);
  };

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Examples of com.mxgraph.view.mxGraphView

   * zoom with a given scale overriden for the needed behavior TODO try to
   * employ the original zoom method instead of this
   */
  @Override
  public void zoom(double newScale) {
    mxGraphView view = getGraph().getView();
    double oldScale = view.getScale();


    view.scaleAndTranslate(oldScale * newScale, view.getTranslate().getX(),
        view.getTranslate().getY());
    centerViewport(newScale);


    view.revalidate();
  }

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Examples of com.mxgraph.view.mxGraphView

      Dimension viewportSize = new Dimension();
      if ((parent != null) && (parent instanceof JViewport)) {
        viewportSize = ((JViewport) parent).getSize();
      }
      Rectangle2D sceneRect = getGraph().getGraphBounds().getRectangle();
      mxGraphView graphView = getGraph().getView();
      final Dimension preferredSize = new Dimension(Math.max(
          (int) sceneRect.getWidth(), viewportSize.width), Math.max(
          (int) sceneRect.getHeight(), viewportSize.height));


      mxPoint p = graphView.getTranslate();
      double x = -sceneRect.getX()
          + (preferredSize.getWidth() - sceneRect.getWidth()) / 2.0;
      double y = -sceneRect.getY()
          + (preferredSize.getHeight() - sceneRect.getHeight()) / 2.0;


      /**
       * Workaround for the StackOverflow Exception
       */
      graphView.setEventsEnabled(false);
      graphView.setTranslate(new mxPoint(p.getX() + x, p.getY() + y));
      graphView.revalidate();
      graphView.setEventsEnabled(true);


      return preferredSize;
    }

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Examples of com.mxgraph.view.mxGraphView

    this.graphController = controller;
    initializeGraph();
  }


  private void initializeGraph() {
    this.modelGraph.setView(new mxGraphView(this.modelGraph));
    // Loads the defalt stylesheet from an external file
    /*
     * FIXME currently we are doing nearly everything by our own - try to
     * use the build in handlers to resize oder drag and drop
     * modelGraph.setConnectableEdges(false);

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Examples of com.mxgraph.view.mxGraphView

        mxConstants.STYLE_FILLCOLOR),
        "/com/mxgraph/examples/swing/images/fillcolor.gif"));


    addSeparator();


    final mxGraphView view = editor.getGraphComponent().getGraph()
        .getView();
    final JComboBox zoomCombo = new JComboBox(new Object[] { "400%",
        "200%", "150%", "100%", "75%", "50%", mxResources.get("page"),
        mxResources.get("width"), mxResources.get("actualSize") });
    zoomCombo.setEditable(true);
    zoomCombo.setMinimumSize(new Dimension(75, 0));
    zoomCombo.setPreferredSize(new Dimension(75, 0));
    zoomCombo.setMaximumSize(new Dimension(75, 100));
    zoomCombo.setMaximumRowCount(9);
    add(zoomCombo);


    // Sets the zoom in the zoom combo the current value
    mxIEventListener scaleTracker = new mxIEventListener()
    {
      /**
       * 
       */
      public void invoke(Object sender, mxEventObject evt)
      {
        ignoreZoomChange = true;


        try
        {
          zoomCombo.setSelectedItem((int) Math.round(100 * view
              .getScale())
              + "%");
        }
        finally
        {
          ignoreZoomChange = false;
        }
      }
    };


    // Installs the scale tracker to update the value in the combo box
    // if the zoom is changed from outside the combo box
    view.getGraph().getView().addListener(mxEvent.SCALE, scaleTracker);
    view.getGraph().getView().addListener(mxEvent.SCALE_AND_TRANSLATE,
        scaleTracker);


    // Invokes once to sync with the actual zoom value
    scaleTracker.invoke(null, null);

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Examples of com.mxgraph.view.mxGraphView

   * the given event.
   */
  protected mxCellState getState(MouseEvent e)
  {
    Object cell = getCell(e);
    mxGraphView view = graphComponent.getGraph().getView();
    mxCellState state = getStateToMark(view.getState(cell));


    return (state != null && intersects(state, e)) ? state : null;
  }

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Examples of com.mxgraph.view.mxGraphView

        // computing the correct perimeter points and edge style.
        mxGeometry geometry = graphComponent.getGraph()
            .getCellGeometry(state.getCell());
        mxCellState clone = (mxCellState) state.clone();
        List<mxPoint> points = geometry.getPoints();
        mxGraphView view = clone.getView();


        if (isSource || isTarget)
        {
          marker.process(e);
          mxCellState currentState = marker.getValidState();
          target = state.getVisibleTerminal(!isSource);


          if (currentState != null)
          {
            source = currentState.getCell();
          }
          else
          {
            mxPoint pt = new mxPoint(e.getPoint());


            if (gridEnabledEvent)
            {
              pt = graphComponent.snapScaledPoint(pt);
            }


            clone.setAbsoluteTerminalPoint(pt, isSource);
          }


          if (!isSource)
          {
            Object tmp = source;
            source = target;
            target = tmp;
          }
        }
        else
        {
          mxPoint point = convertPoint(new mxPoint(e.getPoint()),
              gridEnabledEvent);


          if (points == null)
          {
            points = Arrays.asList(new mxPoint[] { point });
          }
          else if (index - 1 < points.size())
          {
            points = new ArrayList<mxPoint>(points);
            points.set(index - 1, point);
          }


          source = view.getVisibleTerminal(state.getCell(), true);
          target = view.getVisibleTerminal(state.getCell(), false);
        }


        // Computes the points for the edge style and terminals
        mxCellState sourceState = view.getState(source);
        mxCellState targetState = view.getState(target);


        mxConnectionConstraint sourceConstraint = graphComponent
            .getGraph().getConnectionConstraint(clone, sourceState,
                true);
        mxConnectionConstraint targetConstraint = graphComponent
            .getGraph().getConnectionConstraint(clone, targetState,
                false);


        /* TODO: Implement mxConstraintHandler
        mxConnectionConstraint constraint = constraintHandler.currentConstraint;


        if (constraint == null)
        {
          constraint = new mxConnectionConstraint();
        }
        
        if (isSource)
        {
          sourceConstraint = constraint;
        }
        else if (isTarget)
        {
          targetConstraint = constraint;
        }
        */


        if (!isSource || sourceState != null)
        {
          view.updateFixedTerminalPoint(clone, sourceState, true,
              sourceConstraint);
        }


        if (!isTarget || targetState != null)
        {
          view.updateFixedTerminalPoint(clone, targetState, false,
              targetConstraint);
        }


        view.updatePoints(clone, points, sourceState, targetState);
        view.updateFloatingTerminalPoints(clone, sourceState,
            targetState);


        // Uses the updated points from the cloned state to draw the preview
        p = createPoints(clone);
        preview.setBounds(getPreviewBounds());

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