com.jrefinery.chart
Class AreaXYItemRenderer

java.lang.Object
  com.jrefinery.chart.AbstractXYItemRenderer
      com.jrefinery.chart.AreaXYItemRenderer

All Implemented Interfaces:

XYItemRenderer

public class AreaXYItemRenderer
extends AbstractXYItemRenderer
implements XYItemRenderer

Area item renderer for an XYPlot. This class can draw (a) shapes at each point, or (b) lines between points, or (c) both shapes and lines, or (d) filled areas, or (e) filled areas and shapes.

Field Summary

static int	AREA Useful constant for specifying the type of rendering (area only).
static int	AREA_AND_SHAPES Useful constant for specifying the type of rendering (area and shapes).
protected java.awt.geom.Line2D	line A working line (to save creating thousands of instances).
static int	LINES Useful constant for specifying the type of rendering (lines only).
protected java.awt.Polygon	pArea Area of the complete series
protected boolean	plotArea A flag indicating whether or not Area are drawn at each XY point.
protected boolean	plotLines A flag indicating whether or not lines are drawn between XY points.
protected boolean	plotShapes A flag indicating whether or not shapes are drawn at each XY point.
static int	SHAPES Useful constant for specifying the type of rendering (shapes only).
static int	SHAPES_AND_LINES Useful constant for specifying the type of rendering (shapes and lines).
protected double	shapeScale Scale factor for standard shapes.
protected boolean	showOutline
protected double	zeroToJava2D

Fields inherited from class com.jrefinery.chart.AbstractXYItemRenderer

info, listeners, toolTipGenerator

Constructor Summary

AreaXYItemRenderer()
Constructs a new renderer.

AreaXYItemRenderer(int type)
Constructs a new renderer.

AreaXYItemRenderer(int type, com.jrefinery.chart.tooltips.XYToolTipGenerator toolTipGenerator)
Constructs a new renderer.

Method Summary

void	drawItem(java.awt.Graphics2D g2, java.awt.geom.Rectangle2D dataArea, ChartRenderingInfo info, XYPlot plot, ValueAxis horizontalAxis, ValueAxis verticalAxis, XYDataset data, int series, int item, CrosshairInfo crosshairInfo) Draws the visual representation of a single data item.
boolean	getPlotArea() Returns true if Area is being plotted by the renderer.
boolean	getPlotLines() Returns true if lines are being plotted by the renderer.
boolean	getPlotShapes() Returns true if shapes are being plotted by the renderer.
void	initialise(java.awt.Graphics2D g2, java.awt.geom.Rectangle2D dataArea, XYPlot plot, XYDataset data, ChartRenderingInfo info) Initialises the renderer.
boolean	isOutline()
void	setOutline(boolean show)

Methods inherited from class com.jrefinery.chart.AbstractXYItemRenderer

addPropertyChangeListener, firePropertyChanged, getToolTipGenerator, removePropertyChangeListener, setToolTipGenerator

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface com.jrefinery.chart.XYItemRenderer

addPropertyChangeListener, getToolTipGenerator, removePropertyChangeListener, setToolTipGenerator

Field Detail

SHAPES

public static final int SHAPES

Useful constant for specifying the type of rendering (shapes only).

See Also:

Constant Field Values

LINES

public static final int LINES

Useful constant for specifying the type of rendering (lines only).

See Also:

Constant Field Values

SHAPES_AND_LINES

public static final int SHAPES_AND_LINES

Useful constant for specifying the type of rendering (shapes and lines).

See Also:

Constant Field Values

AREA

public static final int AREA

Useful constant for specifying the type of rendering (area only).

See Also:

Constant Field Values

AREA_AND_SHAPES

public static final int AREA_AND_SHAPES

Useful constant for specifying the type of rendering (area and shapes).

See Also:

Constant Field Values

plotShapes

protected boolean plotShapes

A flag indicating whether or not shapes are drawn at each XY point.

plotLines

protected boolean plotLines

A flag indicating whether or not lines are drawn between XY points.

plotArea

protected boolean plotArea

A flag indicating whether or not Area are drawn at each XY point.

shapeScale

protected double shapeScale

Scale factor for standard shapes.

showOutline

protected boolean showOutline

zeroToJava2D

protected double zeroToJava2D

line

protected java.awt.geom.Line2D line

A working line (to save creating thousands of instances).

pArea

protected java.awt.Polygon pArea

Area of the complete series

Constructor Detail

AreaXYItemRenderer

public AreaXYItemRenderer()

Constructs a new renderer.

AreaXYItemRenderer

public AreaXYItemRenderer(int type)

Constructs a new renderer.

AreaXYItemRenderer

public AreaXYItemRenderer(int type,
                          com.jrefinery.chart.tooltips.XYToolTipGenerator toolTipGenerator)

Constructs a new renderer.

To specify the type of renderer, use one of the constants: SHAPES, LINES, SHAPES_AND_LINES, AREA or AREA_AND_SHAPES.

Parameters:

type - The type of renderer.

Method Detail

isOutline

public boolean isOutline()

setOutline

public void setOutline(boolean show)

getPlotShapes

public boolean getPlotShapes()

Returns true if shapes are being plotted by the renderer.

getPlotLines

public boolean getPlotLines()

Returns true if lines are being plotted by the renderer.

getPlotArea

public boolean getPlotArea()

Returns true if Area is being plotted by the renderer.

initialise

public void initialise(java.awt.Graphics2D g2,
                       java.awt.geom.Rectangle2D dataArea,
                       XYPlot plot,
                       XYDataset data,
                       ChartRenderingInfo info)

Initialises the renderer. Here we calculate the Java2D y-coordinate for zero, since all the bars have their bases fixed at zero.

Specified by:

initialise in interface XYItemRenderer

Overrides:

initialise in class AbstractXYItemRenderer

Parameters:

g2 - The graphics device.

dataArea - The area inside the axes.

plot - The plot.

data - The data.

info - An optional info collection object to return data back to the caller.

drawItem

public void drawItem(java.awt.Graphics2D g2,
                     java.awt.geom.Rectangle2D dataArea,
                     ChartRenderingInfo info,
                     XYPlot plot,
                     ValueAxis horizontalAxis,
                     ValueAxis verticalAxis,
                     XYDataset data,
                     int series,
                     int item,
                     CrosshairInfo crosshairInfo)

Draws the visual representation of a single data item.

Specified by:

drawItem in interface XYItemRenderer

Parameters:

g2 - The graphics device.

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).

horizontalAxis - The horizontal axis.

verticalAxis - The vertical axis.

data - The dataset.

series - The series index.

item - The item index.