org.apache.pdfbox.pdmodel.graphics.color.PDDeviceNAttributes Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of pdfbox Show documentation
Show all versions of pdfbox Show documentation
The Apache PDFBox library is an open source Java tool for working with PDF documents.
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.pdfbox.pdmodel.graphics.color;
import org.apache.pdfbox.cos.COSBase;
import org.apache.pdfbox.cos.COSDictionary;
import org.apache.pdfbox.cos.COSName;
import org.apache.pdfbox.pdmodel.common.COSDictionaryMap;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;
/**
* Contains additional information about the components of colour space.
* Instead of using the alternate color space and tint transform, conforming readers may use custom
* blending algorithms, along with other information provided in the attributes dictionary.
*
* @author Ben Litchfield
*/
public final class PDDeviceNAttributes
{
private final COSDictionary dictionary;
/**
* Creates a new DeviceN colour space attributes dictionary.
*/
public PDDeviceNAttributes()
{
dictionary = new COSDictionary();
}
/**
* Creates a new DeviceN colour space attributes dictionary from the given dictionary.
* @param attributes a dictionary that has all of the attributes
*/
public PDDeviceNAttributes(COSDictionary attributes)
{
dictionary = attributes;
}
/**
* Returns the underlying COS dictionary.
* @return the dictionary that this object wraps
*/
public COSDictionary getCOSDictionary()
{
return dictionary;
}
/**
* Returns a map of colorants and their associated Separation color space.
* @return map of colorants to color spaces, never null.
* @throws IOException If there is an error reading a color space
*/
public Map getColorants() throws IOException
{
Map actuals = new HashMap();
COSDictionary colorants = (COSDictionary)dictionary.getDictionaryObject(COSName.COLORANTS);
if(colorants == null)
{
colorants = new COSDictionary();
dictionary.setItem(COSName.COLORANTS, colorants);
}
for(COSName name : colorants.keySet())
{
COSBase value = colorants.getDictionaryObject(name);
actuals.put(name.getName(), (PDSeparation)PDColorSpace.create(value));
}
return new COSDictionaryMap(actuals, colorants);
}
/**
* Returns the DeviceN Process Dictionary, or null if it is missing.
* @return the DeviceN Process Dictionary, or null if it is missing.
*/
public PDDeviceNProcess getProcess()
{
COSDictionary process = (COSDictionary)dictionary.getDictionaryObject(COSName.PROCESS);
if (process == null)
{
return null;
}
return new PDDeviceNProcess(process);
}
/**
* Returns true if this is an NChannel (PDF 1.6) color space.
* @return true if this is an NChannel color space.
*/
public boolean isNChannel()
{
return "NChannel".equals(dictionary.getNameAsString(COSName.SUBTYPE));
}
/**
* Sets the colorant map.
* @param colorants the map of colorants
*/
public void setColorants(Map colorants)
{
COSDictionary colorantDict = null;
if(colorants != null)
{
colorantDict = COSDictionaryMap.convert(colorants);
}
dictionary.setItem(COSName.COLORANTS, colorantDict);
}
@Override
public String toString()
{
StringBuilder sb = new StringBuilder(dictionary.getNameAsString(COSName.SUBTYPE));
sb.append('{');
PDDeviceNProcess process = getProcess();
if (process != null)
{
sb.append(getProcess());
sb.append(' ');
}
Map colorants;
try
{
colorants = getColorants();
sb.append("Colorants{");
for (Map.Entry col : colorants.entrySet())
{
sb.append('\"');
sb.append(col.getKey());
sb.append("\": ");
sb.append(col.getValue());
sb.append(' ');
}
sb.append('}');
}
catch (IOException e)
{
sb.append("ERROR");
}
sb.append('}');
return sb.toString();
}
}