org.apache.pdfbox.pdmodel.interactive.annotation.PDAppearanceStream 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.interactive.annotation;
import java.awt.geom.AffineTransform;
import org.apache.pdfbox.cos.COSArray;
import org.apache.pdfbox.cos.COSBase;
import org.apache.pdfbox.cos.COSDictionary;
import org.apache.pdfbox.cos.COSFloat;
import org.apache.pdfbox.cos.COSName;
import org.apache.pdfbox.cos.COSNumber;
import org.apache.pdfbox.cos.COSStream;
import org.apache.pdfbox.pdmodel.common.PDRectangle;
import org.apache.pdfbox.pdmodel.common.COSObjectable;
import org.apache.pdfbox.pdmodel.PDResources;
import org.apache.pdfbox.util.Matrix;
/**
* This class represents an appearance for an annotation.
*
* @author Ben Litchfield
* @version $Revision: 1.4 $
*/
public class PDAppearanceStream implements COSObjectable
{
private COSStream stream = null;
/**
* Constructor.
*
* @param s The cos stream for this appearance.
*/
public PDAppearanceStream( COSStream s )
{
stream = s;
}
/**
* This will return the underlying stream.
*
* @return The wrapped stream.
*/
public COSStream getStream()
{
return stream;
}
/**
* {@inheritDoc}
*/
public COSBase getCOSObject()
{
return stream;
}
/**
* Get the bounding box for this appearance. This may return null in which
* case the Rectangle from the annotation should be used.
*
* @return The bounding box for this appearance.
*/
public PDRectangle getBoundingBox()
{
PDRectangle box = null;
COSArray bbox = (COSArray)stream.getDictionaryObject( COSName.BBOX );
if( bbox != null )
{
box = new PDRectangle( bbox );
}
return box;
}
/**
* This will set the bounding box for this appearance stream.
*
* @param rectangle The new bounding box.
*/
public void setBoundingBox( PDRectangle rectangle )
{
COSArray array = null;
if( rectangle != null )
{
array = rectangle.getCOSArray();
}
stream.setItem( COSName.BBOX, array );
}
/**
* This will get the resources for this appearance stream.
*
* @return The appearance stream resources.
*/
public PDResources getResources()
{
PDResources retval = null;
COSDictionary dict = (COSDictionary)stream.getDictionaryObject( COSName.RESOURCES );
if( dict != null )
{
retval = new PDResources( dict );
}
return retval;
}
/**
* This will set the new resources.
*
* @param resources The new resources.
*/
public void setResources( PDResources resources )
{
COSDictionary dict = null;
if( resources != null )
{
dict = resources.getCOSDictionary();
}
stream.setItem( COSName.RESOURCES, dict );
}
/**
* Gets the optional matrix for this appearance. This may return null.
*
* @return The matrix of this appearance.
*/
public Matrix getMatrix()
{
Matrix retval = null;
COSArray array = (COSArray)stream.getDictionaryObject( COSName.MATRIX );
if( array != null )
{
retval = new Matrix();
retval.setValue(0, 0, ((COSNumber) array.get(0)).floatValue());
retval.setValue(0, 1, ((COSNumber) array.get(1)).floatValue());
retval.setValue(1, 0, ((COSNumber) array.get(2)).floatValue());
retval.setValue(1, 1, ((COSNumber) array.get(3)).floatValue());
retval.setValue(2, 0, ((COSNumber) array.get(4)).floatValue());
retval.setValue(2, 1, ((COSNumber) array.get(5)).floatValue());
}
return retval;
}
/**
* Sets the optional Matrix entry for this appearance.
* @param transform the transformation matrix
*/
public void setMatrix(AffineTransform transform)
{
if (transform != null)
{
COSArray matrix = new COSArray();
double[] values = new double[6];
transform.getMatrix(values);
for (double v : values)
{
matrix.add(new COSFloat((float)v));
}
stream.setItem(COSName.MATRIX, matrix);
}
else
{
stream.removeItem(COSName.MATRIX);
}
}
}