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Apache FOP (Formatting Objects Processor) is the world's first print formatter driven by XSL formatting objects (XSL-FO) and the world's first output independent formatter. It is a Java application that reads a formatting object (FO) tree and renders the resulting pages to a specified output. Output formats currently supported include PDF, PCL, PS, AFP, TIFF, PNG, SVG, XML (area tree representation), Print, AWT and TXT. The primary output target is PDF.

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/*
 * 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: ImageLoaderWMF.java 679326 2008-07-24 09:35:34Z vhennebert $ */

package org.apache.fop.image.loader.batik;

import java.io.IOException;
import java.util.Map;

import org.apache.xmlgraphics.image.loader.Image;
import org.apache.xmlgraphics.image.loader.ImageException;
import org.apache.xmlgraphics.image.loader.ImageFlavor;
import org.apache.xmlgraphics.image.loader.ImageInfo;
import org.apache.xmlgraphics.image.loader.ImageSessionContext;
import org.apache.xmlgraphics.image.loader.impl.AbstractImageLoader;

/**
 * ImageLoader for WMF (Windows Metafile). Depends on the WMF preloader based on Apache Batik.
 */
public class ImageLoaderWMF extends AbstractImageLoader {

    private ImageFlavor targetFlavor;

    /**
     * Main constructor.
     * @param targetFlavor the target flavor
     */
    public ImageLoaderWMF(ImageFlavor targetFlavor) {
        if (!(ImageWMF.WMF_IMAGE.equals(targetFlavor))) {
            throw new IllegalArgumentException("Unsupported target ImageFlavor: " + targetFlavor);
        }
        this.targetFlavor = targetFlavor;
    }

    /** {@inheritDoc} */
    public ImageFlavor getTargetFlavor() {
        return this.targetFlavor;
    }

    /** {@inheritDoc} */
    public Image loadImage(ImageInfo info, Map hints, ImageSessionContext session)
                throws ImageException, IOException {
        if (!ImageWMF.MIME_WMF.equals(info.getMimeType())) {
            throw new IllegalArgumentException("ImageInfo must be from a WMF image");
        }
        Image img = info.getOriginalImage();
        if (!(img instanceof ImageWMF)) {
            throw new IllegalArgumentException(
                    "ImageInfo was expected to contain the Windows Metafile (WMF)");
        }
        ImageWMF wmfImage = (ImageWMF)img;
        return wmfImage;
    }

}




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