fop/src/java/org/apache/fop/render/afp/AFPImageHandlerRawCCITTFax.java

/*
 * 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.
 */

/* $Id$ */

package org.apache.fop.render.afp;

import java.io.IOException;

import org.apache.fop.afp.AFPDataObjectInfo;
import org.apache.fop.afp.AFPImageObjectInfo;
import org.apache.fop.afp.AFPObjectAreaInfo;
import org.apache.xmlgraphics.image.loader.ImageFlavor;
import org.apache.xmlgraphics.image.loader.ImageSize;
import org.apache.xmlgraphics.image.loader.impl.ImageRawCCITTFax;

/**
 * PDFImageHandler implementation which handles CCITT encoded images (CCITT fax group 3/4).
 */
public class AFPImageHandlerRawCCITTFax extends AFPImageHandler {

    private static final ImageFlavor[] FLAVORS = new ImageFlavor[] {
        ImageFlavor.RAW_CCITTFAX,
    };

    private static final Class[] CLASSES = new Class[] {
        ImageRawCCITTFax.class,
    };

    /** {@inheritDoc} */
    public AFPDataObjectInfo generateDataObjectInfo(
            AFPRendererImageInfo rendererImageInfo) throws IOException {
        AFPImageObjectInfo imageObjectInfo
            = (AFPImageObjectInfo)super.generateDataObjectInfo(rendererImageInfo);

        ImageRawCCITTFax ccitt = (ImageRawCCITTFax) rendererImageInfo.getImage();
        imageObjectInfo.setCompression(ccitt.getCompression());

        AFPObjectAreaInfo objectAreaInfo = imageObjectInfo.getObjectAreaInfo();
        ImageSize imageSize = ccitt.getSize();
        int widthRes = (int) (imageSize.getDpiHorizontal() * 10);
        objectAreaInfo.setWidthRes(widthRes);

        int heightRes = (int) (imageSize.getDpiVertical() * 10);
        objectAreaInfo.setHeightRes(heightRes);

        imageObjectInfo.setInputStream(ccitt.createInputStream());

        return imageObjectInfo;
    }

    /** {@inheritDoc} */
    protected AFPDataObjectInfo createDataObjectInfo() {
        return new AFPImageObjectInfo();
    }

    /** {@inheritDoc} */
    public int getPriority() {
        return 400;
    }

    /** {@inheritDoc} */
    public Class[] getSupportedImageClasses() {
        return CLASSES;
    }

    /** {@inheritDoc} */
    public ImageFlavor[] getSupportedImageFlavors() {
        return FLAVORS;
    }

}