/* ================================================================
* Cewolf : Chart enabling Web Objects Framework
* ================================================================
*
* Project Info: http://cewolf.sourceforge.net
* Project Lead: Guido Laures (guido@laures.de);
*
* (C) Copyright 2002, by Guido Laures
*
* 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., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307, USA.
*/
package de.laures.cewolf;
import java.io.Serializable;
import java.util.Date;
/**
* A special ChartHolder which also holds the image presentation of the chart.
* @author Guido Laures
*/
public interface ChartImage extends Serializable {
public static final int IMG_TYPE_CHART = 0;
public static final int IMG_TYPE_LEGEND = 1;
/**
* Returns the width of the chart image in pixel.
* @return the width of the chart image in pixel
*/
public int getWidth();
/**
* Returns the height of the chart image in pixel.
* @return the height of the chart image in pixel
*/
public int getHeight();
/**
* Returns the type of the chart image.
* @return the type of the chart image
* @see #IMG_TYPE_CHART
* @see #IMG_TYPE_LEGEND
*/
public int getType();
/**
* Writes out a cached image to an outputstream. This method only marks the object
* as accessed and therfore frees it for cache cleanup.
* @throws CewolfException
*/
public byte[] getBytes() throws CewolfException;
/**
* Returns the MIME type of this image.
* @return the MIME type of the image
*/
public String getMimeType();
/**
* Returns the size of the image in bytes.
* @return size of the image
* @throws CewolfException if the size could not be determined
*/
public int getSize() throws CewolfException;
public Date getTimeoutTime();
}