jfreechart.html

JFreeChart 9.20的文档 需要用JAVA在网页上做统计图的东东

public void <B>setBackgroundPaint</B>(java.awt.Paint&nbsp;paint)</PRE>
<DL>
<DD>Sets the paint used to fill the chart background and sends a <A HREF="../../../org/jfree/chart/event/ChartChangeEvent.html" title="class in org.jfree.chart.event"><CODE>ChartChangeEvent</CODE></A> to
 all registered listeners.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>paint</CODE> - the paint (<code>null</code> permitted).</DL>
</DD>
</DL>
<HR>

<A NAME="getBackgroundImage()"><!-- --></A><H3>
getBackgroundImage</H3>
<PRE>
public java.awt.Image <B>getBackgroundImage</B>()</PRE>
<DL>
<DD>Returns the background image for the chart, or <code>null</code> if there is no image.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>The image (possibly <code>null</code>).</DL>
</DD>
</DL>
<HR>

<A NAME="setBackgroundImage(java.awt.Image)"><!-- --></A><H3>
setBackgroundImage</H3>
<PRE>
public void <B>setBackgroundImage</B>(java.awt.Image&nbsp;image)</PRE>
<DL>
<DD>Sets the background image for the chart and sends a <A HREF="../../../org/jfree/chart/event/ChartChangeEvent.html" title="class in org.jfree.chart.event"><CODE>ChartChangeEvent</CODE></A> to all 
 registered listeners.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>image</CODE> - the image (<code>null</code> permitted).</DL>
</DD>
</DL>
<HR>

<A NAME="getBackgroundImageAlignment()"><!-- --></A><H3>
getBackgroundImageAlignment</H3>
<PRE>
public int <B>getBackgroundImageAlignment</B>()</PRE>
<DL>
<DD>Returns the background image alignment. Alignment constants are defined in the
 <code>com.jrefinery.ui.Align</code> class in the JCommon class library.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>The alignment.</DL>
</DD>
</DL>
<HR>

<A NAME="setBackgroundImageAlignment(int)"><!-- --></A><H3>
setBackgroundImageAlignment</H3>
<PRE>
public void <B>setBackgroundImageAlignment</B>(int&nbsp;alignment)</PRE>
<DL>
<DD>Sets the background alignment.
 <p>
 Alignment options are defined by the <CODE>Align</CODE> class.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>alignment</CODE> - the alignment.</DL>
</DD>
</DL>
<HR>

<A NAME="getBackgroundImageAlpha()"><!-- --></A><H3>
getBackgroundImageAlpha</H3>
<PRE>
public float <B>getBackgroundImageAlpha</B>()</PRE>
<DL>
<DD>Returns the alpha-transparency for the chart's background image.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>the alpha-transparency.</DL>
</DD>
</DL>
<HR>

<A NAME="setBackgroundImageAlpha(float)"><!-- --></A><H3>
setBackgroundImageAlpha</H3>
<PRE>
public void <B>setBackgroundImageAlpha</B>(float&nbsp;alpha)</PRE>
<DL>
<DD>Sets the alpha-transparency for the chart's background image.
 Registered listeners are notified that the chart has been changed.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>alpha</CODE> - the alpha value.</DL>
</DD>
</DL>
<HR>

<A NAME="isNotify()"><!-- --></A><H3>
isNotify</H3>
<PRE>
public boolean <B>isNotify</B>()</PRE>
<DL>
<DD>Returns a flag that controls whether or not change events are sent to registered listeners.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD><code>true</code> or <code>false</code>.</DL>
</DD>
</DL>
<HR>

<A NAME="setNotify(boolean)"><!-- --></A><H3>
setNotify</H3>
<PRE>
public void <B>setNotify</B>(boolean&nbsp;notify)</PRE>
<DL>
<DD>Sets a flag that controls whether or not listeners receive <A HREF="../../../org/jfree/chart/event/ChartChangeEvent.html" title="class in org.jfree.chart.event"><CODE>ChartChangeEvent</CODE></A>
 notifications.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>notify</CODE> - a boolean.</DL>
</DD>
</DL>
<HR>

<A NAME="draw(java.awt.Graphics2D, java.awt.geom.Rectangle2D)"><!-- --></A><H3>
draw</H3>
<PRE>
public void <B>draw</B>(java.awt.Graphics2D&nbsp;g2,
                 java.awt.geom.Rectangle2D&nbsp;area)</PRE>
<DL>
<DD>Draws the chart on a Java 2D graphics device (such as the screen or a
 printer).
 <P>
 This method is the focus of the entire JFreeChart library.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE>draw</CODE> in interface <CODE>org.jfree.ui.Drawable</CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>g2</CODE> - the graphics device.<DD><CODE>area</CODE> - the area within which the chart should be drawn.</DL>
</DD>
</DL>
<HR>

<A NAME="draw(java.awt.Graphics2D, java.awt.geom.Rectangle2D, org.jfree.chart.ChartRenderingInfo)"><!-- --></A><H3>
draw</H3>
<PRE>
public void <B>draw</B>(java.awt.Graphics2D&nbsp;g2,
                 java.awt.geom.Rectangle2D&nbsp;area,
                 <A HREF="../../../org/jfree/chart/ChartRenderingInfo.html" title="class in org.jfree.chart">ChartRenderingInfo</A>&nbsp;info)</PRE>
<DL>
<DD>Draws the chart on a Java 2D graphics device (such as the screen or a
 printer).
 <P>
 This method is the focus of the entire JFreeChart library.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>g2</CODE> - the graphics device.<DD><CODE>area</CODE> - the area within which the chart should be drawn.<DD><CODE>info</CODE> - records info about the drawing (null means collect no info).</DL>
</DD>
</DL>
<HR>

<A NAME="draw(java.awt.Graphics2D, java.awt.geom.Rectangle2D, java.awt.geom.Point2D, org.jfree.chart.ChartRenderingInfo)"><!-- --></A><H3>
draw</H3>
<PRE>
public void <B>draw</B>(java.awt.Graphics2D&nbsp;g2,
                 java.awt.geom.Rectangle2D&nbsp;chartArea,
                 java.awt.geom.Point2D&nbsp;anchor,
                 <A HREF="../../../org/jfree/chart/ChartRenderingInfo.html" title="class in org.jfree.chart">ChartRenderingInfo</A>&nbsp;info)</PRE>
<DL>
<DD>Draws the chart on a Java 2D graphics device (such as the screen or a
 printer).
 <P>
 This method is the focus of the entire JFreeChart library.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>g2</CODE> - the graphics device.<DD><CODE>chartArea</CODE> - the area within which the chart should be drawn.<DD><CODE>anchor</CODE> - the anchor point (in Java2D space) for the chart (<code>null</code> 
                permitted).<DD><CODE>info</CODE> - records info about the drawing (null means collect no info).</DL>
</DD>
</DL>
<HR>

<A NAME="drawTitle(org.jfree.chart.title.Title, java.awt.Graphics2D, java.awt.geom.Rectangle2D)"><!-- --></A><H3>
drawTitle</H3>
<PRE>
public void <B>drawTitle</B>(<A HREF="../../../org/jfree/chart/title/Title.html" title="class in org.jfree.chart.title">Title</A>&nbsp;title,
                      java.awt.Graphics2D&nbsp;g2,
                      java.awt.geom.Rectangle2D&nbsp;area)</PRE>
<DL>
<DD>Draws a title.  The title should be drawn at the top, bottom, left or right of the 
 specified area, and the area should be updated to reflect the amount of space used by 
 the title.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>title</CODE> - the title (<code>null</code> not permitted).<DD><CODE>g2</CODE> - the graphics device (<code>null</code> not permitted).<DD><CODE>area</CODE> - the chart area, excluding any existing titles (<code>null</code> not permitted).</DL>
</DD>
</DL>
<HR>

<A NAME="createBufferedImage(int, int)"><!-- --></A><H3>
createBufferedImage</H3>
<PRE>
public java.awt.image.BufferedImage <B>createBufferedImage</B>(int&nbsp;width,
                                                        int&nbsp;height)</PRE>
<DL>
<DD>Creates and returns a buffered image into which the chart has been drawn.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>width</CODE> - the width.<DD><CODE>height</CODE> - the height.
<DT><B>Returns:</B><DD>a buffered image.</DL>
</DD>
</DL>
<HR>

<A NAME="createBufferedImage(int, int, org.jfree.chart.ChartRenderingInfo)"><!-- --></A><H3>
createBufferedImage</H3>
<PRE>
public java.awt.image.BufferedImage <B>createBufferedImage</B>(int&nbsp;width,
                                                        int&nbsp;height,
                                                        <A HREF="../../../org/jfree/chart/ChartRenderingInfo.html" title="class in org.jfree.chart">ChartRenderingInfo</A>&nbsp;info)</PRE>
<DL>
<DD>Creates and returns a buffered image into which the chart has been drawn.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>width</CODE> - the width.<DD><CODE>height</CODE> - the height.<DD><CODE>info</CODE> - carries back chart state information (<code>null</code> permitted).
<DT><B>Returns:</B><DD>a buffered image.</DL>
</DD>
</DL>
<HR>

<A NAME="createBufferedImage(int, int, int, org.jfree.chart.ChartRenderingInfo)"><!-- --></A><H3>
createBufferedImage</H3>
<PRE>
public java.awt.image.BufferedImage <B>createBufferedImage</B>(int&nbsp;width,
                                                        int&nbsp;height,
                                                        int&nbsp;imageType,
                                                        <A HREF="../../../org/jfree/chart/ChartRenderingInfo.html" title="class in org.jfree.chart">ChartRenderingInfo</A>&nbsp;info)</PRE>
<DL>
<DD>Creates and returns a buffered image into which the chart has been drawn.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>width</CODE> - the width.<DD><CODE>height</CODE> - the height.<DD><CODE>imageType</CODE> - the image type.<DD><CODE>info</CODE> - carries back chart state information (<code>null</code> permitted).
<DT><B>Returns:</B><DD>a buffered image.</DL>
</DD>
</DL>
<HR>

<A NAME="createBufferedImage(int, int, double, double, org.jfree.chart.ChartRenderingInfo)"><!-- --></A><H3>
createBufferedImage</H3>
<PRE>
public java.awt.image.BufferedImage <B>createBufferedImage</B>(int&nbsp;imageWidth,
                                                        int&nbsp;imageHeight,
                                                        double&nbsp;drawWidth,
                                                        double&nbsp;drawHeight,
                                                        <A HREF="../../../org/jfree/chart/ChartRenderingInfo.html" title="class in org.jfree.chart">ChartRenderingInfo</A>&nbsp;info)</PRE>
<DL>
<DD>Creates and returns a buffered image into which the chart has been drawn.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>imageWidth</CODE> - the image width.<DD><CODE>imageHeight</CODE> - the image height.<DD><CODE>drawWidth</CODE> - the width for drawing the chart (will be scaled to fit image).<DD><CODE>drawHeight</CODE> - the height for drawing the chart (will be scaled to fit image).<DD><CODE>info</CODE> - optional object for collection chart dimension and entity information.
<DT><B>Returns:</B><DD>a buffered image.</DL>
</DD>
</DL>
<HR>

<A NAME="handleClick(int, int, org.jfree.chart.ChartRenderingInfo)"><!-- --></A><H3>
handleClick</H3>
<PRE>
pu