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Minor code clean-up for WMFImageReader
This commit is contained in:
Harald Kuhr
parent
2b04f7205c
commit
00aec2c90e
@ -1,141 +1,143 @@
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/*
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* Copyright (c) 2008, Harald Kuhr
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* * Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* * Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* * Neither the name of the copyright holder nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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package com.twelvemonkeys.imageio.plugins.wmf;
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import com.twelvemonkeys.imageio.ImageReaderBase;
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import com.twelvemonkeys.imageio.plugins.svg.SVGImageReader;
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import com.twelvemonkeys.imageio.plugins.svg.SVGReadParam;
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import com.twelvemonkeys.imageio.util.IIOUtil;
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import org.apache.batik.transcoder.TranscoderException;
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import org.apache.batik.transcoder.TranscoderInput;
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import org.apache.batik.transcoder.TranscoderOutput;
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import org.apache.batik.transcoder.wmf.tosvg.WMFTranscoder;
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import javax.imageio.IIOException;
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import javax.imageio.ImageIO;
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import javax.imageio.ImageReadParam;
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import javax.imageio.ImageTypeSpecifier;
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import javax.imageio.spi.ImageReaderSpi;
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import java.awt.image.BufferedImage;
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import java.io.*;
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import java.util.Iterator;
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/**
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* WMFImageReader class description.
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*
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* @author <a href="mailto:harald.kuhr@gmail.com">Harald Kuhr</a>
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* @author last modified by $Author: haku $
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* @version $Id: WMFImageReader.java,v 1.0 29.jul.2004 13:00:59 haku Exp $
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*/
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// TODO: Probably possible to do less wrapping/unwrapping of data...
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// TODO: Consider using temp file instead of in-memory stream
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public final class WMFImageReader extends ImageReaderBase {
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private SVGImageReader reader = null;
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public WMFImageReader(final ImageReaderSpi pProvider) {
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super(pProvider);
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}
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protected void resetMembers() {
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if (reader != null) {
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reader.dispose();
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}
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reader = null;
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}
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public BufferedImage read(int pIndex, ImageReadParam pParam) throws IOException {
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init();
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processImageStarted(pIndex);
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BufferedImage image = reader.read(pIndex, pParam);
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if (abortRequested()) {
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processReadAborted();
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return image;
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}
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processImageProgress(100f);
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processImageComplete();
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return image;
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}
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private synchronized void init() throws IOException {
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// Need the extra test, to avoid throwing an IOException from the Transcoder
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if (imageInput == null) {
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throw new IllegalStateException("input == null");
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}
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if (reader == null) {
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WMFTranscoder transcoder = new WMFTranscoder();
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ByteArrayOutputStream output = new ByteArrayOutputStream();
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Writer writer = new OutputStreamWriter(output, "UTF8");
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try {
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TranscoderInput in = new TranscoderInput(IIOUtil.createStreamAdapter(imageInput));
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TranscoderOutput out = new TranscoderOutput(writer);
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// TODO: Transcodinghints?
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transcoder.transcode(in, out);
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}
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catch (TranscoderException e) {
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throw new IIOException(e.getMessage(), e);
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}
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reader = new SVGImageReader(getOriginatingProvider());
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reader.setInput(ImageIO.createImageInputStream(new ByteArrayInputStream(output.toByteArray())));
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}
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}
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@Override
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public ImageReadParam getDefaultReadParam() {
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return new SVGReadParam();
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}
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public int getWidth(int pIndex) throws IOException {
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init();
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return reader.getWidth(pIndex);
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}
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public int getHeight(int pIndex) throws IOException {
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init();
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return reader.getHeight(pIndex);
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}
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public Iterator<ImageTypeSpecifier> getImageTypes(final int pImageIndex) throws IOException {
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init();
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return reader.getImageTypes(pImageIndex);
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}
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}
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/*
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* Copyright (c) 2008, Harald Kuhr
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* * Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* * Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* * Neither the name of the copyright holder nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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package com.twelvemonkeys.imageio.plugins.wmf;
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import com.twelvemonkeys.imageio.ImageReaderBase;
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import com.twelvemonkeys.imageio.plugins.svg.SVGImageReader;
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import com.twelvemonkeys.imageio.plugins.svg.SVGReadParam;
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import com.twelvemonkeys.imageio.stream.ByteArrayImageInputStream;
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import com.twelvemonkeys.imageio.util.IIOUtil;
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import org.apache.batik.transcoder.TranscoderException;
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import org.apache.batik.transcoder.TranscoderInput;
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import org.apache.batik.transcoder.TranscoderOutput;
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import org.apache.batik.transcoder.wmf.tosvg.WMFTranscoder;
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import javax.imageio.IIOException;
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import javax.imageio.ImageReadParam;
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import javax.imageio.ImageTypeSpecifier;
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import javax.imageio.spi.ImageReaderSpi;
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import java.awt.image.*;
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import java.io.ByteArrayOutputStream;
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import java.io.IOException;
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import java.io.OutputStreamWriter;
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import java.io.Writer;
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import java.nio.charset.StandardCharsets;
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import java.util.Iterator;
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/**
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* WMFImageReader class description.
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*
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* @author <a href="mailto:harald.kuhr@gmail.com">Harald Kuhr</a>
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* @author last modified by $Author: haku $
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* @version $Id: WMFImageReader.java,v 1.0 29.jul.2004 13:00:59 haku Exp $
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*/
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// TODO: Probably possible to do less wrapping/unwrapping of data...
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public final class WMFImageReader extends ImageReaderBase {
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private SVGImageReader reader = null;
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public WMFImageReader(final ImageReaderSpi pProvider) {
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super(pProvider);
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}
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protected void resetMembers() {
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if (reader != null) {
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reader.dispose();
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}
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reader = null;
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}
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public BufferedImage read(int pIndex, ImageReadParam pParam) throws IOException {
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init();
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processImageStarted(pIndex);
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BufferedImage image = reader.read(pIndex, pParam);
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if (abortRequested()) {
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processReadAborted();
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return image;
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}
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processImageProgress(100f);
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processImageComplete();
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return image;
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}
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private void init() throws IOException {
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// Need the extra test, to avoid throwing an IOException from the Transcoder
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if (imageInput == null) {
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throw new IllegalStateException("input == null");
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}
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if (reader == null) {
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WMFTranscoder transcoder = new WMFTranscoder();
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ByteArrayOutputStream output = new ByteArrayOutputStream(8192);
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try (Writer writer = new OutputStreamWriter(output, StandardCharsets.UTF_8)) {
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TranscoderInput in = new TranscoderInput(IIOUtil.createStreamAdapter(imageInput));
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TranscoderOutput out = new TranscoderOutput(writer);
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// TODO: Transcodinghints?
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transcoder.transcode(in, out);
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}
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catch (TranscoderException e) {
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throw new IIOException(e.getMessage(), e);
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}
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reader = new SVGImageReader(getOriginatingProvider());
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reader.setInput(new ByteArrayImageInputStream(output.toByteArray()));
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}
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}
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@Override
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public ImageReadParam getDefaultReadParam() {
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return new SVGReadParam();
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}
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public int getWidth(int pIndex) throws IOException {
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init();
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return reader.getWidth(pIndex);
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}
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public int getHeight(int pIndex) throws IOException {
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init();
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return reader.getHeight(pIndex);
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}
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public Iterator<ImageTypeSpecifier> getImageTypes(final int pImageIndex) throws IOException {
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init();
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return reader.getImageTypes(pImageIndex);
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}
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}
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