/*
* 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.contentstream.operator.graphics;
import java.io.IOException;
import java.util.List;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.pdfbox.cos.COSBase;
import org.apache.pdfbox.cos.COSName;
import org.apache.pdfbox.filter.MissingImageReaderException;
import org.apache.pdfbox.pdmodel.graphics.form.PDFormXObject;
import org.apache.pdfbox.pdmodel.graphics.image.PDImageXObject;
import org.apache.pdfbox.pdmodel.graphics.PDXObject;
import org.apache.pdfbox.contentstream.operator.Operator;
/**
* Do: Draws an XObject.
*
* @author Ben Litchfield
* @author John Hewson
*/
public final class DrawObject extends GraphicsOperatorProcessor
{
private static final Log LOG = LogFactory.getLog(DrawObject.class);
@Override
public void process(Operator operator, List<COSBase> operands) throws IOException
{
COSName objectName = (COSName)operands.get(0);
PDXObject xobject = context.getResources().getXObject(objectName);
if (xobject == null)
{
LOG.warn("Can't find the XObject named '" + objectName.getName() + "'");
}
else if (xobject instanceof PDImageXObject)
{
PDImageXObject image = (PDImageXObject)xobject;
try
{
context.drawImage(image);
}
catch (MissingImageReaderException e)
{
// missing ImageIO plug-in TODO how far should we escalate this? (after all the user can fix the problem)
LOG.error(e.getMessage());
}
catch (Exception e)
{
// TODO we probably shouldn't catch Exception, what errors are expected here?
LOG.error(e, e);
}
}
else if (xobject instanceof PDFormXObject)
{
PDFormXObject form = (PDFormXObject) xobject;
if (form.getGroup() != null && COSName.TRANSPARENCY.equals(form.getGroup().getSubType())) {
getContext().showTransparencyGroup(form);
}
else
{
getContext().showForm(form);
}
}
}
@Override
public String getName()
{
return "Do";
}
}