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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.graphics.shading;
import java.awt.Paint;
import java.awt.geom.AffineTransform;
import org.apache.pdfbox.cos.COSArray;
import org.apache.pdfbox.cos.COSDictionary;
import org.apache.pdfbox.cos.COSFloat;
import org.apache.pdfbox.cos.COSName;
import org.apache.pdfbox.util.Matrix;
/**
* Resources for a function based shading.
*/
public class PDShadingType1 extends PDShading
{
private COSArray domain = null;
/**
* Constructor using the given shading dictionary.
*
* @param shadingDictionary the dictionary for this shading
*/
public PDShadingType1(COSDictionary shadingDictionary)
{
super(shadingDictionary);
}
@Override
public int getShadingType()
{
return PDShading.SHADING_TYPE1;
}
/**
* This will get the optional Matrix of a function based shading.
*
* @return the matrix
*/
public Matrix getMatrix()
{
COSArray array = (COSArray) getCOSObject().getDictionaryObject(COSName.MATRIX);
if (array != null)
{
return new Matrix(array);
}
else
{
// identity matrix is the default
return new Matrix();
}
}
/**
* Sets the optional Matrix entry for the function based shading.
*
* @param transform the transformation matrix
*/
public void setMatrix(AffineTransform transform)
{
COSArray matrix = new COSArray();
double[] values = new double[6];
transform.getMatrix(values);
for (double v : values)
{
matrix.add(new COSFloat((float) v));
}
getCOSObject().setItem(COSName.MATRIX, matrix);
}
/**
* This will get the optional Domain values of a function based shading.
*
* @return the domain values
*/
public COSArray getDomain()
{
if (domain == null)
{
domain = (COSArray) getCOSObject().getDictionaryObject(COSName.DOMAIN);
}
return domain;
}
/**
* Sets the optional Domain entry for the function based shading.
*
* @param newDomain the domain array
*/
public void setDomain(COSArray newDomain)
{
domain = newDomain;
getCOSObject().setItem(COSName.DOMAIN, newDomain);
}
@Override
public Paint toPaint(Matrix matrix)
{
return new Type1ShadingPaint(this, matrix);
}
}