xyitemrenderer.java

这是一个segy数据显示程序

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

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

    /**
     * Sets the item label position for positive 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 setPositiveItemLabelPosition(ItemLabelPosition position);
    
    /**
     * Sets the positive item label position for 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 setPositiveItemLabelPosition(ItemLabelPosition position, boolean notify);

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

    /**
     * Sets the item label position for all positive 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 setSeriesPositiveItemLabelPosition(int series, ItemLabelPosition position, 
                                                   boolean notify);

    /**
     * Returns the base positive item label position.
     * 
     * @return the position (never <code>null</code>).
     */
    public ItemLabelPosition getBasePositiveItemLabelPosition();

    /**
     * Sets the base positive item label position.
     * 
     * @param position  the position (<code>null</code> not permitted).
     */
    public void setBasePositiveItemLabelPosition(ItemLabelPosition position);
    
    /**
     * Sets the base positive 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 setBasePositiveItemLabelPosition(ItemLabelPosition position, boolean notify);

    // NEGATIVE ITEM LABEL POSITION...

    /**
     * Returns the item label position for negative values.  This method can be overridden to 
     * provide customisation of the item label position for individual data items.
     * 
     * @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);

    /**
     * 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);

    /**
     * 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.
     */
    public void drawRangeGridLine(Graphics2D g2,
                                  XYPlot plot,
                                  ValueAxis axis,
                                  Rectangle2D dataArea,
                                  double value);

    /**
     * Draws a vertical line on 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 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.
     * <P>
     * 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 range type for the renderer.  The plot needs to know this information in order
     * to determine an appropriate axis range (when the axis auto-range calculation is on).
     * <P>
     * Two types are recognised:
     * <ul>
     *   <li><code>STANDARD</code> - data items are plotted individually, so the axis range should
     *     extend from the smallest value to the largest value;</li>
     * <li><code>STACKED</code> - data items are stacked on top of one another, so to determine
     *     the axis range, all the items in a series need to be summed together.</li>
     * </ul>
     *
     * If the data values are stacked, this affects the axis range required to
     * display all the data items.
     *
     * @return a flag indicating whether or not the data values are stacked.
     */
    public RangeType getRangeType();
    
    /**
     * Returns the range of values the renderer requires to display all the items from the
     * specified dataset.
     * 
     * @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 getRangeExtent(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);

}