net.sourceforge.plantuml.png.PngIO Maven / Gradle / Ivy
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PlantUML is a component that allows to quickly write :
* sequence diagram,
* use case diagram,
* class diagram,
* activity diagram,
* component diagram,
* state diagram
* object diagram
/* ========================================================================
* PlantUML : a free UML diagram generator
* ========================================================================
*
* (C) Copyright 2009-2013, Arnaud Roques
*
* Project Info: http://plantuml.sourceforge.net
*
* This file is part of PlantUML.
*
* PlantUML is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* PlantUML 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 General Public
* License for more details.
*
* You should have received a copy of the GNU 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.]
*
* Original Author: Arnaud Roques
*
* Revision $Revision: 9786 $
*
*/
package net.sourceforge.plantuml.png;
import java.awt.image.RenderedImage;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import javax.imageio.ImageIO;
import net.sourceforge.plantuml.Log;
public class PngIO {
private static final String copyleft = "Generated by http://plantuml.sourceforge.net";
public static void write(RenderedImage image, File file, int dpi) throws IOException {
write(image, file, null, dpi);
}
public static void write(RenderedImage image, OutputStream os, int dpi) throws IOException {
write(image, os, null, dpi);
}
public static void write(RenderedImage image, File file, String metadata, int dpi) throws IOException {
OutputStream os = null;
try {
os = new BufferedOutputStream(new FileOutputStream(file));
write(image, os, metadata, dpi);
} finally {
if (os != null) {
os.close();
}
}
Log.debug("File is " + file);
Log.debug("File size " + file.length());
if (file.length() == 0) {
Log.error("File size is zero: " + file);
ImageIO.write(image, "png", file);
}
}
public static void write(RenderedImage image, OutputStream os, String metadata, int dpi) throws IOException {
if (checkPNGMetadata()) {
PngIOMetadata.writeWithMetadata(image, os, metadata, dpi);
} else {
ImageIO.write(image, "png", os);
}
}
static boolean checkPNGMetadata() {
try {
final Class cl = Class.forName("com.sun.imageio.plugins.png.PNGMetadata");
if (cl == null) {
Log.info("Cannot load com.sun.imageio.plugins.png.PNGMetadata");
return false;
}
Log.info("Ok for com.sun.imageio.plugins.png.PNGMetadata");
return true;
} catch (Exception e) {
Log.info("Error loading com.sun.imageio.plugins.png.PNGMetadata " + e);
return false;
}
}
}