Module platform
Package org.jfree.chart.renderer.xy

Class XYDotRenderer

java.lang.Object
org.jfree.chart.renderer.AbstractRenderer
org.jfree.chart.renderer.xy.AbstractXYItemRenderer
org.jfree.chart.renderer.xy.XYDotRenderer
All Implemented Interfaces:
Serializable, Cloneable, EventListener, AnnotationChangeListener, LegendItemSource, XYItemRenderer, PublicCloneable
public class XYDotRenderer extends AbstractXYItemRenderer implements XYItemRenderer, PublicCloneable
A renderer that draws a small dot at each data point for an XYPlot. The example shown here is generated by the ScatterPlotDemo4.java program included in the JFreeChart demo collection:

XYDotRendererSample.png
See Also:

  • Constructor Details

    • XYDotRenderer

      public XYDotRenderer()
      Constructs a new renderer.

  • Method Details

    • getDotWidth

      public int getDotWidth()
      Returns the dot width (the default value is 1).
      Returns:
      The dot width.
      See Also:

    • setDotWidth

      public void setDotWidth(int w)
      Sets the dot width and sends a RendererChangeEvent to all registered listeners.
      Parameters:
      w - the new width (must be greater than zero).
      Throws:
      IllegalArgumentException - if w is less than one.
      See Also:

    • getDotHeight

      public int getDotHeight()
      Returns the dot height (the default value is 1).
      Returns:
      The dot height.
      See Also:

    • setDotHeight

      public void setDotHeight(int h)
      Sets the dot height and sends a RendererChangeEvent to all registered listeners.
      Parameters:
      h - the new height (must be greater than zero).
      Throws:
      IllegalArgumentException - if h is less than one.
      See Also:

    • getLegendShape

      public Shape getLegendShape()
      Returns the shape used to represent an item in the legend.
      Returns:
      The legend shape (never null).
      See Also:

    • setLegendShape

      public void setLegendShape(Shape shape)
      Sets the shape used as a line in each legend item and sends a RendererChangeEvent to all registered listeners.
      Parameters:
      shape - the shape (null not permitted).
      See Also:

    • drawItem

      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)
      Draws the visual representation of a single data item.
      Specified by:
      drawItem in interface XYItemRenderer
      Parameters:
      g2 - the graphics device.
      state - the renderer state.
      dataArea - the area within which the data is being drawn.
      info - collects information about the drawing.
      plot - the plot (can be used to obtain standard color information etc).
      domainAxis - the domain (horizontal) axis.
      rangeAxis - the range (vertical) axis.
      dataset - the dataset.
      series - the series index (zero-based).
      item - the item index (zero-based).
      crosshairState - crosshair information for the plot (null permitted).
      pass - the pass index.

    • getLegendItem

      public LegendItem getLegendItem(int datasetIndex, int series)
      Returns a legend item for the specified series.
      Specified by:
      getLegendItem in interface XYItemRenderer
      Overrides:
      getLegendItem in class AbstractXYItemRenderer
      Parameters:
      datasetIndex - the dataset index (zero-based).
      series - the series index (zero-based).
      Returns:
      A legend item for the series (possibly null).

    • equals

      public boolean equals(Object obj)
      Tests this renderer for equality with an arbitrary object. This method returns true if and only if:
      • obj is not null;
      • obj is an instance of XYDotRenderer;
      • both renderers have the same attribute values.
      Overrides:
      equals in class AbstractXYItemRenderer
      Parameters:
      obj - the object (null permitted).
      Returns:
      A boolean.

    • clone

      public Object clone() throws CloneNotSupportedException
      Returns a clone of the renderer.
      Specified by:
      clone in interface PublicCloneable
      Overrides:
      clone in class AbstractXYItemRenderer
      Returns:
      A clone.
      Throws:
      CloneNotSupportedException - if the renderer cannot be cloned.