org.apache.pdfbox.pdmodel.documentinterchange.taggedpdf.PDFourColours Maven / Gradle / Ivy
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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.documentinterchange.taggedpdf;
import org.apache.pdfbox.cos.COSArray;
import org.apache.pdfbox.cos.COSBase;
import org.apache.pdfbox.cos.COSNull;
import org.apache.pdfbox.pdmodel.common.COSObjectable;
import org.apache.pdfbox.pdmodel.graphics.color.PDGamma;
/**
* An object for four colours.
*
* @author Johannes Koch
*/
public class PDFourColours implements COSObjectable
{
private final COSArray array;
public PDFourColours()
{
this.array = new COSArray();
this.array.add(COSNull.NULL);
this.array.add(COSNull.NULL);
this.array.add(COSNull.NULL);
this.array.add(COSNull.NULL);
}
public PDFourColours(COSArray array)
{
this.array = array;
// ensure that array has 4 items
if (this.array.size() < 4)
{
for (int i = (this.array.size() - 1); i < 4; i++)
{
this.array.add(COSNull.NULL);
}
}
}
/**
* Gets the colour for the before edge.
*
* @return the colour for the before edge
*/
public PDGamma getBeforeColour()
{
return this.getColourByIndex(0);
}
/**
* Sets the colour for the before edge.
*
* @param colour the colour for the before edge
*/
public void setBeforeColour(PDGamma colour)
{
this.setColourByIndex(0, colour);
}
/**
* Gets the colour for the after edge.
*
* @return the colour for the after edge
*/
public PDGamma getAfterColour()
{
return this.getColourByIndex(1);
}
/**
* Sets the colour for the after edge.
*
* @param colour the colour for the after edge
*/
public void setAfterColour(PDGamma colour)
{
this.setColourByIndex(1, colour);
}
/**
* Gets the colour for the start edge.
*
* @return the colour for the start edge
*/
public PDGamma getStartColour()
{
return this.getColourByIndex(2);
}
/**
* Sets the colour for the start edge.
*
* @param colour the colour for the start edge
*/
public void setStartColour(PDGamma colour)
{
this.setColourByIndex(2, colour);
}
/**
* Gets the colour for the end edge.
*
* @return the colour for the end edge
*/
public PDGamma getEndColour()
{
return this.getColourByIndex(3);
}
/**
* Sets the colour for the end edge.
*
* @param colour the colour for the end edge
*/
public void setEndColour(PDGamma colour)
{
this.setColourByIndex(3, colour);
}
/**
* {@inheritDoc}
*/
@Override
public COSBase getCOSObject()
{
return this.array;
}
/**
* Gets the colour by edge index.
*
* @param index edge index
* @return the colour
*/
private PDGamma getColourByIndex(int index)
{
PDGamma retval = null;
COSBase item = this.array.getObject(index);
if (item instanceof COSArray)
{
retval = new PDGamma((COSArray) item);
}
return retval;
}
/**
* Sets the colour by edge index.
*
* @param index the edge index
* @param colour the colour
*/
private void setColourByIndex(int index, PDGamma colour)
{
COSBase base;
if (colour == null)
{
base = COSNull.NULL;
}
else
{
base = colour.getCOSArray();
}
this.array.set(index, base);
}
}