Class XYBlockRenderer

  • All Implemented Interfaces:
    java.io.Serializable, java.lang.Cloneable, java.util.EventListener, AnnotationChangeListener, LegendItemSource, XYItemRenderer, org.jfree.util.PublicCloneable

    public class XYBlockRenderer
    extends AbstractXYItemRenderer
    implements XYItemRenderer, java.lang.Cloneable, org.jfree.util.PublicCloneable, java.io.Serializable
    A renderer that represents data from an XYZDataset by drawing a color block at each (x, y) point, where the color is a function of the z-value from the dataset. The example shown here is generated by the XYBlockChartDemo1.java program included in the JFreeChart demo collection:

    XYBlockRendererSample.png
    Since:
    1.0.4
    See Also:
    Serialized Form
    • Constructor Detail

      • XYBlockRenderer

        public XYBlockRenderer()
        Creates a new XYBlockRenderer instance with default attributes.
    • Method Detail

      • setBlockWidth

        public void setBlockWidth​(double width)
        Sets the width of the blocks used to represent each data item and sends a RendererChangeEvent to all registered listeners.
        Parameters:
        width - the new width, in data/axis units (must be > 0.0).
        See Also:
        getBlockWidth()
      • setBlockHeight

        public void setBlockHeight​(double height)
        Sets the height of the blocks used to represent each data item and sends a RendererChangeEvent to all registered listeners.
        Parameters:
        height - the new height, in data/axis units (must be > 0.0).
        See Also:
        getBlockHeight()
      • getBlockAnchor

        public org.jfree.ui.RectangleAnchor getBlockAnchor()
        Returns the anchor point used to align a block at its (x, y) location. The default values is RectangleAnchor.CENTER.
        Returns:
        The anchor point (never null).
        See Also:
        setBlockAnchor(RectangleAnchor)
      • setBlockAnchor

        public void setBlockAnchor​(org.jfree.ui.RectangleAnchor anchor)
        Sets the anchor point used to align a block at its (x, y) location and sends a RendererChangeEvent to all registered listeners.
        Parameters:
        anchor - the anchor.
        See Also:
        getBlockAnchor()
      • drawItem

        public void drawItem​(java.awt.Graphics2D g2,
                             XYItemRendererState state,
                             java.awt.geom.Rectangle2D dataArea,
                             PlotRenderingInfo info,
                             XYPlot plot,
                             ValueAxis domainAxis,
                             ValueAxis rangeAxis,
                             XYDataset dataset,
                             int series,
                             int item,
                             CrosshairState crosshairState,
                             int pass)
        Draws the block representing the specified item.
        Specified by:
        drawItem in interface XYItemRenderer
        Parameters:
        g2 - the graphics device.
        state - the state.
        dataArea - the data area.
        info - the plot rendering info.
        plot - the plot.
        domainAxis - the x-axis.
        rangeAxis - the y-axis.
        dataset - the dataset.
        series - the series index.
        item - the item index.
        crosshairState - the crosshair state.
        pass - the pass index.
      • equals

        public boolean equals​(java.lang.Object obj)
        Tests this XYBlockRenderer for equality with an arbitrary object. This method returns true if and only if:
        • obj is an instance of XYBlockRenderer (not null);
        • obj has the same field values as this XYBlockRenderer;
        Overrides:
        equals in class AbstractXYItemRenderer
        Parameters:
        obj - the object (null permitted).
        Returns:
        A boolean.
      • clone

        public java.lang.Object clone()
                               throws java.lang.CloneNotSupportedException
        Returns a clone of this renderer.
        Specified by:
        clone in interface org.jfree.util.PublicCloneable
        Overrides:
        clone in class AbstractXYItemRenderer
        Returns:
        A clone of this renderer.
        Throws:
        java.lang.CloneNotSupportedException - if there is a problem creating the clone.