combinedrangecategoryplot.java

这是一个segy数据显示程序

        return space;
    }

    /**
     * Draws the plot on a Java 2D graphics device (such as the screen or a printer).
     * Will perform all the placement calculations for each sub-plots and then tell these to draw
     * themselves.
     *
     * @param g2  the graphics device.
     * @param plotArea  the area within which the plot (including axis labels) should be drawn.
     * @param parentState  the parent state.
     * @param info  collects information about the drawing (<code>null</code> permitted).
     */
    public void draw(Graphics2D g2, Rectangle2D plotArea, PlotState parentState,
                     PlotRenderingInfo info) {

        // set up info collection...
        if (info != null) {
            info.setPlotArea(plotArea);
        }

        // adjust the drawing area for plot insets (if any)...
        Insets insets = getInsets();
        if (insets != null) {
            plotArea.setRect(
                plotArea.getX() + insets.left,
                plotArea.getY() + insets.top,
                plotArea.getWidth() - insets.left - insets.right,
                plotArea.getHeight() - insets.top - insets.bottom
            );
        }

        // calculate the data area...
        AxisSpace space = calculateAxisSpace(g2, plotArea);
        Rectangle2D dataArea = space.shrink(plotArea, null);

        // set the width and height of non-shared axis of all sub-plots
        setFixedDomainAxisSpaceForSubplots(space);

        // draw the shared axis
        ValueAxis axis = getRangeAxis();
        RectangleEdge rangeEdge = getRangeAxisEdge();
        double cursor = RectangleEdge.coordinate(dataArea, rangeEdge);
        AxisState state = axis.draw(g2, cursor, plotArea, dataArea, rangeEdge, info);
        if (parentState == null) {
            parentState = new PlotState();
        }
        parentState.getSharedAxisStates().put(axis, state);
        
        // draw all the charts
        for (int i = 0; i < this.subplots.size(); i++) {
            CategoryPlot plot = (CategoryPlot) this.subplots.get(i);
            PlotRenderingInfo subplotInfo = null;
            if (info != null) {
                subplotInfo = new PlotRenderingInfo(info.getOwner());
                info.addSubplotInfo(subplotInfo);
            }
            plot.draw(g2, this.subplotArea[i], parentState, subplotInfo);
        }

        if (info != null) {
            info.setDataArea(dataArea);
        }

    }

    /**
     * Sets the orientation for the plot (and all the subplots).
     * 
     * @param orientation  the orientation.
     */
    public void setOrientation(PlotOrientation orientation) {

        super.setOrientation(orientation);

        Iterator iterator = this.subplots.iterator();
        while (iterator.hasNext()) {
            CategoryPlot plot = (CategoryPlot) iterator.next();
            plot.setOrientation(orientation);
        }

    }
    
    /**
      * Returns the range for the axis.  This is the combined range of all the subplots.
      *
      * @param axis  the axis.
      *
      * @return the range.
      */
     public Range getDataRange(ValueAxis axis) {

         Range result = null;
         if (this.subplots != null) {
             Iterator iterator = this.subplots.iterator();
             while (iterator.hasNext()) {
                 CategoryPlot subplot = (CategoryPlot) iterator.next();
                 result = Range.combine(result, subplot.getDataRange(axis));
             }
         }
         return result;

     }

    /**
     * Returns a collection of legend items for the plot.
     *
     * @return the legend items.
     */
    public LegendItemCollection getLegendItems() {

        LegendItemCollection result = new LegendItemCollection();

        if (this.subplots != null) {
            Iterator iterator = this.subplots.iterator();
            while (iterator.hasNext()) {
                CategoryPlot plot = (CategoryPlot) iterator.next();
                LegendItemCollection more = plot.getLegendItems();
                result.addAll(more);
            }
        }

        return result;

    }
    
    /**
     * Sets the size (width or height, depending on the orientation of the plot) for the domain
     * axis of each subplot.
     *
     * @param space  the space.
     */
    protected void setFixedDomainAxisSpaceForSubplots(AxisSpace space) {

        Iterator iterator = this.subplots.iterator();
        while (iterator.hasNext()) {
            CategoryPlot plot = (CategoryPlot) iterator.next();
            plot.setFixedDomainAxisSpace(space);
        }

    }

    /**
     * Handles a 'click' on the plot by updating the anchor value.
     *
     * @param x  x-coordinate of the click.
     * @param y  y-coordinate of the click.
     * @param info  information about the plot's dimensions.
     *
     */
    public void handleClick(int x, int y, PlotRenderingInfo info) {

        Rectangle2D dataArea = info.getDataArea();
        if (dataArea.contains(x, y)) {
            for (int i = 0; i < this.subplots.size(); i++) {
                CategoryPlot subplot = (CategoryPlot) this.subplots.get(i);
                PlotRenderingInfo subplotInfo = info.getSubplotInfo(i);
                subplot.handleClick(x, y, subplotInfo);
            }
        }

    }

    /**
     * Receives a {@link PlotChangeEvent} and responds by notifying all listeners.
     * 
     * @param event  the event.
     */
    public void plotChanged(PlotChangeEvent event) {
        notifyListeners(event);
    }

    /** 
     * Tests the plot for equality with an arbitrary object.
     * 
     * @param object  the object to test against.
     * 
     * @return <code>true</code> or <code>false</code>.
     */
    public boolean equals(Object object) {
    
        if (object == null) {
            return false;
        }
        
        if (object == this) {
            return true;
        }
        
        if (object instanceof CombinedRangeCategoryPlot) {
            CombinedRangeCategoryPlot plot = (CombinedRangeCategoryPlot) object;
            if (super.equals(object)) {
                boolean b0 = ObjectUtils.equal(this.subplots, plot.subplots);
                boolean b1 = (this.totalWeight == plot.totalWeight);
                boolean b2 = (this.gap == plot.gap);

                return b0 && b1 && b2;
                          
            } 
        }
        
        return false;
        
    }

    /**
     * Returns a clone of the plot.
     * 
     * @return A clone.
     * 
     * @throws CloneNotSupportedException  this class will not throw this exception, but subclasses
     *         (if any) might.
     */
    public Object clone() throws CloneNotSupportedException {
        CombinedRangeCategoryPlot result = (CombinedRangeCategoryPlot) super.clone(); 
        result.subplots = ObjectUtils.clone(this.subplots);
        for (Iterator it = result.subplots.iterator(); it.hasNext();) {
            Plot child = (Plot) it.next();
            child.setParent(result);
        }
        
        // after setting up all the subplots, the shared range axis may need reconfiguring
        ValueAxis rangeAxis = result.getRangeAxis();
        if (rangeAxis != null) {
            rangeAxis.configure();
        }
        
        return result;
    }

    /**
     * Provides serialization support.
     *
     * @param stream  the input stream.
     *
     * @throws IOException  if there is an I/O error.
     * @throws ClassNotFoundException  if there is a classpath problem.
     */
    private void readObject(ObjectInputStream stream) throws IOException, ClassNotFoundException {

        stream.defaultReadObject();
        
        // the range axis is deserialized before the subplots, so its value range
        // is likely to be incorrect...
        ValueAxis rangeAxis = getRangeAxis();
        if (rangeAxis != null) {
            rangeAxis.configure();
        }
        
    }

}