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Java Advanced Imaging Image I/O Tools API core, but without the classes
involved with javax.media.jai dependencies, JPEG2000 or
codecLibJIIO, meaning that this library can be distributed under the
modified BSD license and should be GPL compatible.
The newest version!
/*
* $RCSfile: PCXMetadata.java,v $
*
*
* Copyright (c) 2007 Sun Microsystems, Inc. All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistribution of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Redistribution in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* Neither the name of Sun Microsystems, Inc. or the names of
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* This software is provided "AS IS," without a warranty of any
* kind. ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND
* WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY
* EXCLUDED. SUN MIDROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL
* NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF
* USING, MODIFYING OR DISTRIBUTING THIS SOFTWARE OR ITS
* DERIVATIVES. IN NO EVENT WILL SUN OR ITS LICENSORS BE LIABLE FOR
* ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT, INDIRECT, SPECIAL,
* CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER CAUSED AND
* REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF OR
* INABILITY TO USE THIS SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGES.
*
* You acknowledge that this software is not designed or intended for
* use in the design, construction, operation or maintenance of any
* nuclear facility.
*
* $Revision: 1.2 $
* $Date: 2007/09/07 19:12:25 $
* $State: Exp $
*/
package com.github.jaiimageio.impl.plugins.pcx;
import javax.imageio.metadata.IIOInvalidTreeException;
import javax.imageio.metadata.IIOMetadata;
import javax.imageio.metadata.IIOMetadataFormatImpl;
import javax.imageio.metadata.IIOMetadataNode;
import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.Node;
public class PCXMetadata extends IIOMetadata implements Cloneable, PCXConstants {
short version;
byte bitsPerPixel;
boolean gotxmin, gotymin;
short xmin, ymin;
int vdpi, hdpi;
int hsize,vsize;
PCXMetadata() {
super(true, null, null, null, null);
reset();
}
public Node getAsTree(String formatName) {
if (formatName.equals(IIOMetadataFormatImpl.standardMetadataFormatName)) {
return getStandardTree();
} else {
throw new IllegalArgumentException("Not a recognized format!");
}
}
public boolean isReadOnly() {
return false;
}
public void mergeTree(String formatName, Node root) throws IIOInvalidTreeException {
if (formatName.equals(IIOMetadataFormatImpl.standardMetadataFormatName)) {
if (root == null) {
throw new IllegalArgumentException("root == null!");
}
mergeStandardTree(root);
} else {
throw new IllegalArgumentException("Not a recognized format!");
}
}
public void reset() {
version = VERSION_3_0;
bitsPerPixel = 0;
gotxmin = false;
gotymin = false;
xmin = 0;
ymin = 0;
vdpi = 72;
hdpi = 72;
hsize = 0;
vsize = 0;
}
public IIOMetadataNode getStandardDocumentNode() {
String versionString;
switch(version) {
case VERSION_2_5:
versionString = "2.5";
break;
case VERSION_2_8_W_PALETTE:
versionString = "2.8 with palette";
break;
case VERSION_2_8_WO_PALETTE:
versionString = "2.8 without palette";
break;
case VERSION_PC_WINDOWS:
versionString = "PC Paintbrush for Windows";
break;
case VERSION_3_0:
versionString = "3.0";
break;
default:
// unknown
versionString = null;
}
IIOMetadataNode documentNode = null;
if(versionString != null) {
documentNode = new IIOMetadataNode("Document");
IIOMetadataNode node = new IIOMetadataNode("FormatVersion");
node.setAttribute("value", versionString);
documentNode.appendChild(node);
}
return documentNode;
}
public IIOMetadataNode getStandardDimensionNode() {
IIOMetadataNode dimensionNode = new IIOMetadataNode("Dimension");
IIOMetadataNode node = null; // scratch node
node = new IIOMetadataNode("HorizontalPixelOffset");
node.setAttribute("value", String.valueOf(xmin));
dimensionNode.appendChild(node);
node = new IIOMetadataNode("VerticalPixelOffset");
node.setAttribute("value", String.valueOf(ymin));
dimensionNode.appendChild(node);
node = new IIOMetadataNode("HorizontalPixelSize");
node.setAttribute("value", String.valueOf(254.0/hdpi));
dimensionNode.appendChild(node);
node = new IIOMetadataNode("VerticalPixelSize");
node.setAttribute("value", String.valueOf(254.0/vdpi));
dimensionNode.appendChild(node);
if(hsize != 0) {
node = new IIOMetadataNode("HorizontalScreenSize");
node.setAttribute("value", String.valueOf(hsize));
dimensionNode.appendChild(node);
}
if(vsize != 0) {
node = new IIOMetadataNode("VerticalScreenSize");
node.setAttribute("value", String.valueOf(vsize));
dimensionNode.appendChild(node);
}
return dimensionNode;
}
private void mergeStandardTree(Node root) throws IIOInvalidTreeException {
Node node = root;
if (!node.getNodeName().equals(IIOMetadataFormatImpl.standardMetadataFormatName))
throw new IIOInvalidTreeException("Root must be " +
IIOMetadataFormatImpl.standardMetadataFormatName,
node);
node = node.getFirstChild();
while (node != null) {
String name = node.getNodeName();
if (name.equals("Dimension")) {
Node child = node.getFirstChild();
while (child != null) {
String childName = child.getNodeName();
if (childName.equals("HorizontalPixelOffset")) {
String hpo = getAttribute(child, "value");
xmin = Short.valueOf(hpo).shortValue();
gotxmin = true;
} else if (childName.equals("VerticalPixelOffset")) {
String vpo = getAttribute(child, "value");
ymin = Short.valueOf(vpo).shortValue();
gotymin = true;
} else if (childName.equals("HorizontalPixelSize")) {
String hps = getAttribute(child, "value");
hdpi = (int)(254.0F/Float.parseFloat(hps) + 0.5F);
} else if (childName.equals("VerticalPixelSize")) {
String vps = getAttribute(child, "value");
vdpi = (int)(254.0F/Float.parseFloat(vps) + 0.5F);
} else if (childName.equals("HorizontalScreenSize")) {
String hss = getAttribute(child, "value");
hsize = Integer.valueOf(hss).intValue();
} else if (childName.equals("VerticalScreenSize")) {
String vss = getAttribute(child, "value");
vsize = Integer.valueOf(vss).intValue();
}
child = child.getNextSibling();
}
}
node = node.getNextSibling();
}
}
private static String getAttribute(Node node, String attrName) {
NamedNodeMap attrs = node.getAttributes();
Node attr = attrs.getNamedItem(attrName);
return attr != null ? attr.getNodeValue() : null;
}
}