xyplot.java

关于jfreechart的电子说明书,一种说明图型使用的介绍

     */
    public int getDatasetCount() {
        return this.datasets.size();
    }

    /**
     * Returns the index of the specified dataset, or <code>-1</code> if the
     * dataset does not belong to the plot.
     *
     * @param dataset  the dataset (<code>null</code> not permitted).
     *
     * @return The index.
     */
    public int indexOf(XYDataset dataset) {
        int result = -1;
        for (int i = 0; i < this.datasets.size(); i++) {
            if (dataset == this.datasets.get(i)) {
                result = i;
                break;
            }
        }
        return result;
    }

    /**
     * Maps a dataset to a particular domain axis.  All data will be plotted
     * against axis zero by default, no mapping is required for this case.
     *
     * @param index  the dataset index (zero-based).
     * @param axisIndex  the axis index.
     */
    public void mapDatasetToDomainAxis(int index, int axisIndex) {
        this.datasetToDomainAxisMap.put(
            new Integer(index), new Integer(axisIndex)
        );
        // fake a dataset change event to update axes...
        datasetChanged(new DatasetChangeEvent(this, getDataset(index)));
    }

    /**
     * Maps a dataset to a particular range axis.  All data will be plotted
     * against axis zero by default, no mapping is required for this case.
     *
     * @param index  the dataset index (zero-based).
     * @param axisIndex  the axis index.
     */
    public void mapDatasetToRangeAxis(int index, int axisIndex) {
        this.datasetToRangeAxisMap.put(
            new Integer(index), new Integer(axisIndex)
        );
        // fake a dataset change event to update axes...
        datasetChanged(new DatasetChangeEvent(this, getDataset(index)));
    }

    /**
     * Returns the renderer for the primary dataset.
     *
     * @return The item renderer (possibly <code>null</code>).
     */
    public XYItemRenderer getRenderer() {
        return getRenderer(0);
    }

    /**
     * Returns the renderer for a dataset, or <code>null</code>.
     *
     * @param index  the renderer index.
     *
     * @return The renderer (possibly <code>null</code>).
     */
    public XYItemRenderer getRenderer(int index) {
        XYItemRenderer result = null;
        if (this.renderers.size() > index) {
            result = (XYItemRenderer) this.renderers.get(index);
        }
        return result;

    }

    /**
     * Sets the renderer for the primary dataset and sends a
     * {@link PlotChangeEvent} to all registered listeners.  If the renderer
     * is set to <code>null</code>, no data will be displayed.
     *
     * @param renderer  the renderer (<code>null</code> permitted).
     */
    public void setRenderer(XYItemRenderer renderer) {
        setRenderer(0, renderer);
    }

    /**
     * Sets a renderer and sends a {@link PlotChangeEvent} to all
     * registered listeners.
     *
     * @param index  the index.
     * @param renderer  the renderer.
     */
    public void setRenderer(int index, XYItemRenderer renderer) {
        setRenderer(index, renderer, true);
    }

    /**
     * Sets a renderer and sends a {@link PlotChangeEvent} to all
     * registered listeners.
     *
     * @param index  the index.
     * @param renderer  the renderer.
     * @param notify  notify listeners?
     */
    public void setRenderer(int index, XYItemRenderer renderer, 
                            boolean notify) {
        XYItemRenderer existing = getRenderer(index);
        if (existing != null) {
            existing.removeChangeListener(this);
        }
        this.renderers.set(index, renderer);
        if (renderer != null) {
            renderer.setPlot(this);
            renderer.addChangeListener(this);
        }
        configureDomainAxes();
        configureRangeAxes();
        if (notify) {
            notifyListeners(new PlotChangeEvent(this));
        }
    }

    /**
     * Sets the renderers for this plot and sends a {@link PlotChangeEvent}
     * to all registered listeners.
     * 
     * @param renderers  the renderers.
     */
    public void setRenderers(XYItemRenderer[] renderers) {
        for (int i = 0; i < renderers.length; i++) {
            setRenderer(i, renderers[i], false);   
        }
        notifyListeners(new PlotChangeEvent(this));
    }
    
    /**
     * Returns the dataset rendering order.
     *
     * @return The order (never <code>null</code>).
     */
    public DatasetRenderingOrder getDatasetRenderingOrder() {
        return this.datasetRenderingOrder;
    }

    /**
     * Sets the rendering order and sends a {@link PlotChangeEvent} to all
     * registered listeners.  By default, the plot renders the primary dataset
     * last (so that the primary dataset overlays the secondary datasets).
     * You can reverse this if you want to.
     *
     * @param order  the rendering order (<code>null</code> not permitted).
     */
    public void setDatasetRenderingOrder(DatasetRenderingOrder order) {
        if (order == null) {
            throw new IllegalArgumentException("Null 'order' argument.");
        }
        this.datasetRenderingOrder = order;
        notifyListeners(new PlotChangeEvent(this));
    }

    /**
     * Returns the series rendering order.
     *
     * @return the order (never <code>null</code>).
     */
    public SeriesRenderingOrder getSeriesRenderingOrder() {
        return this.seriesRenderingOrder;
    }

    /**
     * Sets the series order and sends a {@link PlotChangeEvent} to all
     * registered listeners.  By default, the plot renders the primary series
     * last (so that the primary series appears to be on top).
     * You can reverse this if you want to.
     *
     * @param order  the rendering order (<code>null</code> not permitted).
     */
    public void setSeriesRenderingOrder(SeriesRenderingOrder order) {
        if (order == null) {
            throw new IllegalArgumentException("Null 'order' argument.");
        }
        this.seriesRenderingOrder = order;
        notifyListeners(new PlotChangeEvent(this));
    }

    /**
     * Returns the index of the specified renderer, or <code>-1</code> if the
     * renderer is not assigned to this plot.
     *
     * @param renderer  the renderer (<code>null</code> permitted).
     *
     * @return The renderer index.
     */
    public int getIndexOf(XYItemRenderer renderer) {
        return this.renderers.indexOf(renderer);
    }

    /**
     * Returns the renderer for the specified dataset.  The code first
     * determines the index of the dataset, then checks if there is a
     * renderer with the same index (if not, the method returns renderer(0).
     *
     * @param dataset  the dataset (<code>null</code> permitted).
     *
     * @return The renderer (possibly <code>null</code>).
     */
    public XYItemRenderer getRendererForDataset(XYDataset dataset) {
        XYItemRenderer result = null;
        for (int i = 0; i < this.datasets.size(); i++) {
            if (this.datasets.get(i) == dataset) {
                result = (XYItemRenderer) this.renderers.get(i);
                if (result == null) {
                    result = getRenderer();
                }
                break;
            }
        }
        return result;
    }

    /**
     * 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));
        }
    }

    /**
     * Returns the stroke for the grid-lines (if any) plotted against the
     * domain axis.
     *
     * @return The stroke.
     */
    public Stroke getDomainGridlineStroke() {
        return this.domainGridlineStroke;
    }

    /**
     * Sets the stroke for the grid lines plotted against the domain axis.
     * <p>
     * If you set this to <code>null</code>, no grid lines will be drawn.
     *
     * @param stroke  the stroke (<code>null</code> permitted).
     */
    public void setDomainGridlineStroke(Stroke stroke) {
        this.domainGridlineStroke = stroke;
        notifyListeners(new PlotChangeEvent(this));
    }

    /**
     * Returns the paint for the grid lines (if any) plotted against the domain
     * axis.
     *
     * @return The paint.
     */
    public Paint getDomainGridlinePaint() {
        return this.domainGridlinePaint;
    }

    /**
     * Sets the paint for the grid lines plotted against the domain axis.
     * <p>
     * If you set this to <code>null</code>, no grid lines will be drawn.
     *
     * @param paint  the paint (<code>null</code> permitted).
     */
    public void setDomainGridlinePaint(Paint paint) {
        this.domainGridlinePaint = paint;
        notifyListeners(new PlotChangeEvent(this));
    }

    /**
     * Returns <code>true</code> if the range axis grid is visible, and
     * <code>false<code> otherwise.
     *
     * @return A boolean.
     */
    public boolean isRangeGridlinesVisible() {
        return this.rangeGridlinesVisible;
    }

    /**
     * Sets the flag that controls whether or not the range axis 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 setRangeGridlinesVisible(boolean visible) {
        if (this.rangeGridlinesVisible != visible) {
            this.rangeGridlinesVisible = visible;
            notifyListeners(new PlotChangeEvent(this));
        }
    }

    /**
     * Returns the stroke for the grid lines (if any) plotted against the
     * range axis.
     *
     * @return The stroke (never <code>null</code>).
     */
    public Stroke getRangeGridlineStroke() {
        return this.rangeGridlineStroke;
    }

    /**
     * Sets the stroke for the grid lines plotted against the range axis,
     * and sends a {@link PlotChangeEvent} to all registered listeners.
     *
     * @param stroke  the stroke (<code>null</code> not permitted).
     */
    public void setRangeGridlineStroke(Stroke stroke) {
        if (stroke == null) {
            throw new IllegalArgumentException("Null 'stroke' argument.");
        }
        this.rangeGridlineStroke = stroke;
        notifyListeners(new PlotChangeEvent(this));
    }

    /**
     * Returns the paint for the grid lines (if any) plotted against the range
     * axis.
     *
     * @return The paint (never <code>null</code>).
     */
    public Paint getRangeGridlinePaint() {
        return this.rangeGridlinePaint;
    }

    /**
     * Sets the paint for the grid lines plotted against the range axis and
     * sends a {@link PlotChangeEvent} to all registered listeners.