xyitemrenderer.java

制作图表的好工具

     * @param row  the row index (zero-based).
     * @param column  the column (zero-based).
     * 
     * @return The item label position (never <code>null</code>).
     */
    public ItemLabelPosition getNegativeItemLabelPosition(int row, int column);

    /**
     * Returns the item label position for negative values in ALL series.
     * 
     * @return The item label position (possibly <code>null</code>).
     */
    public ItemLabelPosition getNegativeItemLabelPosition();

    /**
     * Sets the item label position for negative values in ALL series, and 
     * sends a {@link RendererChangeEvent} to all registered listeners.  You 
     * need to set this to <code>null</code> to expose the settings for 
     * individual series.
     * 
     * @param position  the position (<code>null</code> permitted).
     */
    public void setNegativeItemLabelPosition(ItemLabelPosition position);
    
    /**
     * Sets the item label position for negative values in ALL series and (if
     * requested) sends a {@link RendererChangeEvent} to all registered 
     * listeners.  
     * 
     * @param position  the position (<code>null</code> permitted).
     * @param notify  notify registered listeners?
     */
    public void setNegativeItemLabelPosition(ItemLabelPosition position, 
                                             boolean notify);

    /**
     * Returns the item label position for all negative values in a series.
     * 
     * @param series  the series index (zero-based).
     * 
     * @return The item label position (never <code>null</code>).
     */
    public ItemLabelPosition getSeriesNegativeItemLabelPosition(int series);

    /**
     * Sets the item label position for negative values in a series and sends a 
     * {@link RendererChangeEvent} to all registered listeners.
     * 
     * @param series  the series index (zero-based).
     * @param position  the position (<code>null</code> permitted).
     */
    public void setSeriesNegativeItemLabelPosition(int series, 
                                                   ItemLabelPosition position);
    
    /**
     * Sets the item label position for negative values in a series and (if 
     * requested) sends a {@link RendererChangeEvent} to all registered 
     * listeners.
     * 
     * @param series  the series index (zero-based).
     * @param position  the position (<code>null</code> permitted).
     * @param notify  notify registered listeners?
     */
    public void setSeriesNegativeItemLabelPosition(int series, 
                                                   ItemLabelPosition position, 
                                                   boolean notify);

    /**
     * Returns the base item label position for negative values.
     * 
     * @return The position (never <code>null</code>).
     */
    public ItemLabelPosition getBaseNegativeItemLabelPosition();

    /**
     * Sets the base item label position for negative values and sends a 
     * {@link RendererChangeEvent} to all registered listeners.
     * 
     * @param position  the position (<code>null</code> not permitted).
     */
    public void setBaseNegativeItemLabelPosition(ItemLabelPosition position);
    
    /**
     * Sets the base negative item label position and, if requested, sends a 
     * {@link RendererChangeEvent} to all registered listeners.
     * 
     * @param position  the position (<code>null</code> not permitted).
     * @param notify  notify registered listeners?
     */
    public void setBaseNegativeItemLabelPosition(ItemLabelPosition position, 
                                                 boolean notify);

    /**
     * Adds an annotation and sends a {@link RendererChangeEvent} to all 
     * registered listeners.  The annotation is added to the foreground
     * layer.
     * 
     * @param annotation  the annotation (<code>null</code> not permitted).
     */
    public void addAnnotation(XYAnnotation annotation);

    /**
     * Adds an annotation to the specified layer.
     * 
     * @param annotation  the annotation (<code>null</code> not permitted).
     * @param layer  the layer (<code>null</code> not permitted).
     */
    public void addAnnotation(XYAnnotation annotation, Layer layer);

    /**
     * Removes the specified annotation and sends a {@link RendererChangeEvent}
     * to all registered listeners.
     * 
     * @param annotation  the annotation to remove (<code>null</code> not 
     *                    permitted).
     * 
     * @return A boolean to indicate whether or not the annotation was 
     *         successfully removed.
     */
    public boolean removeAnnotation(XYAnnotation annotation);
    
    /**
     * Removes all annotations and sends a {@link RendererChangeEvent}
     * to all registered listeners.
     */
    public void removeAnnotations();
    
    /**
     * Draws all the annotations for the specified layer.
     * 
     * @param g2  the graphics device.
     * @param dataArea  the data area.
     * @param domainAxis  the domain axis.
     * @param rangeAxis  the range axis.
     * @param layer  the layer.
     * @param info  the plot rendering info.
     */
    public void drawAnnotations(Graphics2D g2, 
                                Rectangle2D dataArea, 
                                ValueAxis domainAxis, 
                                ValueAxis rangeAxis, 
                                Layer layer, 
                                PlotRenderingInfo info);
    
    /**
     * Called for each item to be plotted.
     * <p>
     * The {@link XYPlot} can make multiple passes through the dataset, 
     * depending on the value returned by the renderer's initialise() method.
     *
     * @param g2  the graphics device.
     * @param state  the renderer state.
     * @param dataArea  the area within which the data is being rendered.
     * @param info  collects drawing info.
     * @param plot  the plot (can be used to obtain standard color 
     *              information etc).
     * @param domainAxis  the domain axis.
     * @param rangeAxis  the range axis.
     * @param dataset  the dataset.
     * @param series  the series index (zero-based).
     * @param item  the item index (zero-based).
     * @param crosshairState  crosshair information for the plot 
     *                        (<code>null</code> permitted).
     * @param pass  the pass index.
     */
    public void drawItem(Graphics2D g2,
                         XYItemRendererState state,
                         Rectangle2D dataArea,
                         PlotRenderingInfo info,
                         XYPlot plot,
                         ValueAxis domainAxis,
                         ValueAxis rangeAxis,
                         XYDataset dataset,
                         int series,
                         int item,
                         CrosshairState crosshairState,
                         int pass);

    /**
     * Returns a legend item for a series from a dataset.
     *
     * @param datasetIndex  the dataset index.
     * @param series  the series (zero-based index).
     *
     * @return The legend item (possibly <code>null</code>).
     */
    public LegendItem getLegendItem(int datasetIndex, int series);

    /**
     * Returns the legend item label generator.
     * 
     * @return The legend item label generator (never <code>null</code>).
     */
    public XYSeriesLabelGenerator getLegendItemLabelGenerator();
    
    /**
     * Sets the legend item label generator.
     * 
     * @param generator  the generator (<code>null</code> not permitted).
     */
    public void setLegendItemLabelGenerator(XYSeriesLabelGenerator generator);

        /**
     * Fills a band between two values on the axis.  This can be used to color 
     * bands between the grid lines.
     *
     * @param g2  the graphics device.
     * @param plot  the plot.
     * @param axis  the domain axis.
     * @param dataArea  the data area.
     * @param start  the start value.
     * @param end  the end value.
     */
    public void fillDomainGridBand(Graphics2D g2,
                                   XYPlot plot,
                                   ValueAxis axis,
                                   Rectangle2D dataArea,
                                   double start, double end);

    /**
     * Fills a band between two values on the range axis.  This can be used to 
     * color bands between the grid lines.
     *
     * @param g2  the graphics device.
     * @param plot  the plot.
     * @param axis  the range axis.
     * @param dataArea  the data area.
     * @param start  the start value.
     * @param end  the end value.
     */
    public void fillRangeGridBand(Graphics2D g2,
                                  XYPlot plot,
                                  ValueAxis axis,
                                  Rectangle2D dataArea,
                                  double start, double end);

    /**
     * Draws a grid line against the domain axis.
     *
     * @param g2  the graphics device.
     * @param plot  the plot.
     * @param axis  the value axis.
     * @param dataArea  the area for plotting data (not yet adjusted for any 
     *                  3D effect).
     * @param value  the value.
     */
    public void drawDomainGridLine(Graphics2D g2,
                                   XYPlot plot,
                                   ValueAxis axis,
                                   Rectangle2D dataArea,
                                   double value);

    /**
     * Draws a grid line against the range axis.
     *
     * @param g2  the graphics device.
     * @param plot  the plot.
     * @param axis  the value axis.
     * @param dataArea  the area for plotting data (not yet adjusted for any 
     *                  3D effect).
     * @param value  the value.
     * @param paint  the paint (<code>null</code> not permitted).
     * @param stroke  the stroke (<code>null</code> not permitted).
     */
    public void drawRangeLine(Graphics2D g2,
                              XYPlot plot,
                              ValueAxis axis,
                              Rectangle2D dataArea,
                              double value,
                              Paint paint,
                              Stroke stroke);

    /**
     * Draws the specified <code>marker</code> against the domain axis.
     *
     * @param g2  the graphics device.
     * @param plot  the plot.
     * @param axis  the value axis.
     * @param marker  the marker.
     * @param dataArea  the axis data area.
     */
    public void drawDomainMarker(Graphics2D g2,
                                 XYPlot plot,
                                 ValueAxis axis,
                                 Marker marker,
                                 Rectangle2D dataArea);

    /**
     * Draws a horizontal line across the chart to represent a 'range marker'.
     *
     * @param g2  the graphics device.
     * @param plot  the plot.
     * @param axis  the value axis.
     * @param marker  the marker line.
     * @param dataArea  the axis data area.
     */
    public void drawRangeMarker(Graphics2D g2,
                                XYPlot plot,
                                ValueAxis axis,
                                Marker marker,
                                Rectangle2D dataArea);

    /**
     * Returns the plot that this renderer has been assigned to.
     *
     * @return The plot.
     */
    public XYPlot getPlot();

    /**
     * Sets the plot that this renderer is assigned to.  This method will be 
     * called by the plot class...you do not need to call it yourself.
     *
     * @param plot  the plot.
     */
    public void setPlot(XYPlot plot);
    
    /**
     * Returns the lower and upper bounds (range) of the x-values in the 
     * specified dataset.
     * 
     * @param dataset  the dataset (<code>null</code> permitted).
     * 
     * @return The range.
     */
    public Range findDomainBounds(XYDataset dataset);
    
    /**
     * Returns the lower and upper bounds (range) of the y-values in the
     * specified dataset.  The implementation of this method will take 
     * into account the presentation used by the renderers (for example,
     * a renderer that "stacks" values will return a bigger range than
     * a renderer that doesn't.
     * 
     * @param dataset  the dataset (<code>null</code> permitted).
     * 
     * @return The range (or <code>null</code> if the dataset is 
     *         <code>null</code> or empty).
     */
    public Range findRangeBounds(XYDataset dataset);
    
    /**
     * Add a renderer change listener.
     * 
     * @param listener  the listener.
     */
    public void addChangeListener(RendererChangeListener listener);

    /**
     * Removes a change listener.
     * 
     * @param listener  the listener.
     */
    public void removeChangeListener(RendererChangeListener listener);
    
}