xyplot.java

大家打开看看啊, 很有用的东西

     */
    public AxisLocation getRangeAxisLocation() {
        return this.rangeAxisLocation;
    }

    /**
     * Sets the location of the range axis.
     *
     * @param location  the location.
     */
    public void setRangeAxisLocation(AxisLocation location) {
        setRangeAxisLocation(location, true);
    }

    /**
     * Sets the location of the range axis.
     *
     * @param location  the location.
     * @param notify  a flag that controls whether listeners are notified.
     */
    public void setRangeAxisLocation(AxisLocation location, boolean notify) {

        if (location != this.rangeAxisLocation) {
            this.rangeAxisLocation = location;
            if (notify) {
                notifyListeners(new PlotChangeEvent(this));
            }
        }

    }

    /**
     * Returns the edge for the range axis.
     * 
     * @return The range axis edge.
     */
    public RectangleEdge getRangeAxisEdge() {
        return Plot.resolveRangeAxisLocation(this.rangeAxisLocation, this.orientation);
    }
    
    /**
     * Returns a secondary range axis.
     *
     * @param index  the axis index.
     *
     * @return The axis (<code>null</code> possible).
     */
    public ValueAxis getSecondaryRangeAxis(int index) {
        ValueAxis result = null;
        if (index < this.secondaryRangeAxes.size()) {
            result = (ValueAxis) this.secondaryRangeAxes.get(index);
        }
        if (result == null) {
            Plot parent = getParent();
            if (parent instanceof XYPlot) {
                XYPlot xy = (XYPlot) parent;
                result = xy.getSecondaryRangeAxis(index);
            }
        }
        return result;
    }

    /**
     * Sets a secondary range axis.
     *
     * @param index  the axis index.
     * @param axis  the axis.
     */
    public void setSecondaryRangeAxis(int index, ValueAxis axis) {

        ValueAxis existing = getSecondaryRangeAxis(index);
        if (existing != null) {
            existing.removeChangeListener(this);
        }

        if (axis != null) {
            try {
                axis.setPlot(this);
            }
            catch (PlotNotCompatibleException e) {
            }
        }

        this.secondaryRangeAxes.set(index, axis);
        if (axis != null) {
            axis.configure();
            axis.addChangeListener(this);
        }
        notifyListeners(new PlotChangeEvent(this));

    }

    /**
     * Clears the secondary range axes from the plot.
     */
    public void clearSecondaryRangeAxes() {
        for (int i = 0; i < this.secondaryRangeAxes.size(); i++) {
            ValueAxis axis = (ValueAxis) this.secondaryRangeAxes.get(i);
            if (axis != null) {
                axis.removeChangeListener(this);
            }
        }
        this.secondaryRangeAxes.clear();
        notifyListeners(new PlotChangeEvent(this));
    }

    /**
     * Configures the secondary range axes.
     */
    public void configureSecondaryRangeAxes() {
        for (int i = 0; i < this.secondaryRangeAxes.size(); i++) {
            ValueAxis axis = (ValueAxis) this.secondaryRangeAxes.get(i);
            if (axis != null) {
                axis.configure();
            }
        }
    }

    /**
     * Returns the location for a secondary range axis.
     *
     * @param index  the axis index.
     *
     * @return The location.
     */
    public AxisLocation getSecondaryRangeAxisLocation(int index) {
        AxisLocation result = null;
        if (index < this.secondaryRangeAxisLocations.size()) {
            result = (AxisLocation) this.secondaryRangeAxisLocations.get(index);
        }
        if (result == null) {
            Plot parent = getParent();
            if (parent instanceof XYPlot) {
                XYPlot xy = (XYPlot) parent;
                result = xy.getSecondaryRangeAxisLocation(index);
            }
        }
        return result;

    }

    /**
     * Sets the location for a secondary range axis.
     *
     * @param index  the axis index.
     * @param location  the location.
     */
    public void setSecondaryRangeAxisLocation(int index, AxisLocation location) {
        this.secondaryRangeAxisLocations.set(index, location);
        notifyListeners(new PlotChangeEvent(this));
    }

    /**
     * Returns the edge for a secondary range axis.
     *
     * @param index  the axis index.
     *
     * @return The edge.
     */
    public RectangleEdge getSecondaryRangeAxisEdge(int index) {
        AxisLocation location = getSecondaryRangeAxisLocation(index);
        RectangleEdge result = Plot.resolveRangeAxisLocation(location, this.orientation);
        if (result == null) {
            result = RectangleEdge.opposite(getRangeAxisEdge());
        }
        return result;
    }

    /**
     * Returns the primary dataset for the plot.
     *
     * @return The primary dataset (possibly <code>null</code>).
     */
    public XYDataset getDataset() {
        return this.dataset;
    }

    /**
     * Sets the dataset for the plot, replacing the existing dataset if there is one.
     *
     * @param dataset  the dataset (<code>null</code> permitted).
     */
    public void setDataset(XYDataset dataset) {

        // if there is an existing dataset, remove the plot from the list of change listeners...
        XYDataset existing = this.dataset;
        if (existing != null) {
            existing.removeChangeListener(this);
        }

        // set the new dataset, and register the chart as a change listener...
        this.dataset = dataset;
        if (dataset != null) {
            setDatasetGroup(dataset.getGroup());
            dataset.addChangeListener(this);
        }

        // send a dataset change event to self...
        DatasetChangeEvent event = new DatasetChangeEvent(this, dataset);
        datasetChanged(event);

    }

    /**
     * Returns one of the secondary datasets.
     *
     * @param index  the dataset index.
     *
     * @return The dataset (possibly <code>null</code>).
     */
    public XYDataset getSecondaryDataset(int index) {
        XYDataset result = null;
        if (this.secondaryDatasets.size() > index) {
            result = (XYDataset) this.secondaryDatasets.get(index);
        }
        return result;
    }

    /**
     * Returns the number of secondary datasets. 
     * 
     * @return The number of secondary datasets.
     */
    public int getSecondaryDatasetCount() {
        return this.secondaryDatasets.size();
    }

    /**
     * Adds or changes a secondary dataset for the plot.
     *
     * @param index  the dataset index.
     * @param dataset  the dataset.
     */
    public void setSecondaryDataset(int index, XYDataset dataset) {
        this.secondaryDatasets.set(index, dataset);
        // send a dataset change event to self...
        DatasetChangeEvent event = new DatasetChangeEvent(this, dataset);
        datasetChanged(event);
    }
    
    /**
     * Maps a secondary dataset to a particular domain axis.
     * 
     * @param index  the dataset index (zero-based).
     * @param key  the key (<code>null</code> for primary axis, or the index of the secondary
     *             axis).
     */
    public void mapSecondaryDatasetToDomainAxis(int index, Integer key) {
        this.secondaryDatasetDomainAxisMap.set(index, key);  
        // fake a dataset change event to update axes...
        datasetChanged(new DatasetChangeEvent(this, this.dataset));  
    }

    /**
     * Maps a secondary dataset to a particular range axis.
     * 
     * @param index  the dataset index (zero-based).
     * @param key  the key (<code>null</code> for primary axis, or the index of the secondary
     *             axis).
     */
    public void mapSecondaryDatasetToRangeAxis(int index, Integer key) {
        this.secondaryDatasetRangeAxisMap.set(index, key);
        // fake a dataset change event to update axes...
        datasetChanged(new DatasetChangeEvent(this, this.dataset));  
    }

    /**
     * Returns the item renderer.
     *
     * @return The item renderer (possibly <code>null</code>).
     */
    public XYItemRenderer getRenderer() {
        return this.renderer;
    }

    /**
     * Sets the item renderer, and notifies all listeners of a change to the plot.
     * <P>
     * If the renderer is set to <code>null</code>, no chart will be drawn.
     *
     * @param renderer  the new renderer (<code>null</code> permitted).
     */
    public void setRenderer(XYItemRenderer renderer) {

        if (this.renderer != null) {
            this.renderer.removePropertyChangeListener(this);
        }

        this.renderer = renderer;
        if (renderer != null) {
            renderer.setPlot(this);
        }

        notifyListeners(new PlotChangeEvent(this));

    }

    /**
     * Returns a secondary renderer.
     *
     * @param index  the renderer index.
     *
     * @return The renderer (possibly <code>null</code>).
     */
    public XYItemRenderer getSecondaryRenderer(int index) {
        XYItemRenderer result = null;
        if (this.secondaryRenderers.size() > index) {
            result = (XYItemRenderer) this.secondaryRenderers.get(index);
        }
        return result;

    }

    /**
     * Sets a secondary renderer.  A {@link PlotChangeEvent} is sent to all registered listeners.
     *
     * @param index  the index.
     * @param renderer  the renderer.
     */
    public void setSecondaryRenderer(int index, XYItemRenderer renderer) {
        XYItemRenderer existing = getSecondaryRenderer(index);
        if (existing != null) {
            existing.removePropertyChangeListener(this);
        }
        this.secondaryRenderers.set(index, renderer);
        if (renderer != null) {
            renderer.setPlot(this);
        }
        notifyListeners(new PlotChangeEvent(this));
    }

    /**
     * Returns the weight for this plot when it is used as a subplot within a
     * combined plot.
     *
     * @return the weight.
     */
    public int getWeight() {
        return this.weight;
    }

    /**
     * Sets the weight for the plot.
     *
     * @param weight  the weight.
     */
    public void setWeight(int weight) {
        this.weight = weight;
    }

    /**
     * Returns <code>true</code> if the domain gridlines are visible, and <code>false<code>
     * otherwise.
     *
     * @return <code>true</code> or <code>false</code>.
     */
    public boolean isDomainGridlinesVisible() {
        return this.domainGridlinesVisible;
    }

    /**
     * Sets the flag that controls whether or not the domain grid-lines are visible.
     * <p>
     * If the flag value is changed, a {@link PlotChangeEvent} is sent to all registered listeners.
     *
     * @param visible  the new value of the flag.
     */
    public void setDomainGridlinesVisible(boolean visible) {
        if (this.domainGridlinesVisible != visible) {
            this.domainGridlinesVisible = visible;
            notifyListeners(new PlotChangeEvent(this));
        }
    }

    /**