/* ===========================================================
* JFreeChart : a free chart library for the Java(tm) platform
* ===========================================================
*
* (C) Copyright 2000-2008, by Object Refinery Limited and Contributors.
*
* Project Info: http://www.jfree.org/jfreechart/index.html
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
* USA.
*
* [Java is a trademark or registered trademark of Sun Microsystems, Inc.
* in the United States and other countries.]
*
* -----------------------
* ChartRenderingInfo.java
* -----------------------
* (C) Copyright 2002-2008, by Object Refinery Limited.
*
* Original Author: David Gilbert (for Object Refinery Limited);
* Contributor(s): -;
*
* Changes
* -------
* 22-Jan-2002 : Version 1 (DG);
* 05-Feb-2002 : Added a new constructor, completed Javadoc comments (DG);
* 05-Mar-2002 : Added a clear() method (DG);
* 23-May-2002 : Renamed DrawInfo --> ChartRenderingInfo (DG);
* 26-Sep-2002 : Fixed errors reported by Checkstyle (DG);
* 17-Sep-2003 : Added PlotRenderingInfo (DG);
* 01-Nov-2005 : Updated equals() method (DG);
* 30-Nov-2005 : Removed get/setPlotArea() (DG);
* ------------- JFREECHART 1.0.x ---------------------------------------------
* 01-Dec-2006 : Fixed equals() and clone() (DG);
*
*/
package net.droidsolutions.droidcharts.core;
import java.io.Serializable;
import net.droidsolutions.droidcharts.awt.Rectangle2D;
import net.droidsolutions.droidcharts.core.entity.EntityCollection;
import net.droidsolutions.droidcharts.core.entity.StandardEntityCollection;
import net.droidsolutions.droidcharts.core.plot.PlotRenderingInfo;
/**
* A structure for storing rendering information from one call to the
* JFreeChart.draw() method.
* <P>
* An instance of the {@link JFreeChart} class can draw itself within an
* arbitrary rectangle on any <code>Graphics2D</code>. It is assumed that client
* code will sometimes render the same chart in more than one view, so the
* {@link JFreeChart} instance does not retain any information about its
* rendered dimensions. This information can be useful sometimes, so you have
* the option to collect the information at each call to
* <code>JFreeChart.draw()</code>, by passing an instance of this
* <code>ChartRenderingInfo</code> class.
*/
public class ChartRenderingInfo implements Cloneable, Serializable {
/** For serialization. */
private static final long serialVersionUID = 2751952018173406822L;
/** The area in which the chart is drawn. */
private transient Rectangle2D chartArea;
/** Rendering info for the chart's plot (and subplots, if any). */
private PlotRenderingInfo plotInfo;
/**
* Storage for the chart entities. Since retaining entity information for
* charts with a large number of data points consumes a lot of memory, it is
* intended that you can set this to <code>null</code> to prevent the
* information being collected.
*/
private EntityCollection entities;
/**
* Constructs a new ChartRenderingInfo structure that can be used to collect
* information about the dimensions of a rendered chart.
*/
public ChartRenderingInfo() {
this(new StandardEntityCollection());
}
/**
* Constructs a new instance. If an entity collection is supplied, it will
* be populated with information about the entities in a chart. If it is
* <code>null</code>, no entity information (including tool tips) will be
* collected.
*
* @param entities
* an entity collection (<code>null</code> permitted).
*/
public ChartRenderingInfo(EntityCollection entities) {
this.chartArea = new Rectangle2D.Double();
this.plotInfo = new PlotRenderingInfo(this);
this.entities = entities;
}
/**
* Returns the area in which the chart was drawn.
*
* @return The area in which the chart was drawn.
*
* @see #setChartArea(Rectangle2D)
*/
public Rectangle2D getChartArea() {
return this.chartArea;
}
/**
* Sets the area in which the chart was drawn.
*
* @param area
* the chart area.
*
* @see #getChartArea()
*/
public void setChartArea(Rectangle2D area) {
this.chartArea.setRect(area);
}
/**
* Returns the collection of entities maintained by this instance.
*
* @return The entity collection (possibly <code>null</code>).
*
* @see #setEntityCollection(EntityCollection)
*/
public EntityCollection getEntityCollection() {
return this.entities;
}
/**
* Sets the entity collection.
*
* @param entities
* the entity collection (<code>null</code> permitted).
*
* @see #getEntityCollection()
*/
public void setEntityCollection(EntityCollection entities) {
this.entities = entities;
}
/**
* Clears the information recorded by this object.
*/
public void clear() {
this.chartArea.setRect(0.0, 0.0, 0.0, 0.0);
this.plotInfo = new PlotRenderingInfo(this);
if (this.entities != null) {
this.entities.clear();
}
}
/**
* Returns the rendering info for the chart's plot.
*
* @return The rendering info for the plot.
*/
public PlotRenderingInfo getPlotInfo() {
return this.plotInfo;
}
}
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