Java Transcoder类代码示例

import org.apache.batik.transcoder.Transcoder; //导入依赖的package包/类
/**
 * Returns a transcoder object of the result image type.
 *
 * @return Transcoder object or <tt>null</tt> if there isn't a proper transcoder.
 */
protected Transcoder getTranscoder() {

  switch (code) {
    case PNG_CODE:
      return new PNGTranscoder();
    case JPEG_CODE:
      return new JPEGTranscoder();
    case TIFF_CODE:
      return new TIFFTranscoder();
    case PDF_CODE:
      try {
        Class pdfClass = Class.forName("org.apache.fop.svg.PDFTranscoder");
        return (Transcoder) pdfClass.newInstance();
      }
      catch (Exception e) {
        return null;
      }
    default:
      return null;
  }

}
 

import org.apache.batik.transcoder.Transcoder; //导入依赖的package包/类
public void streamOut(OutputStream out) {

    // Stream out SVG to the standard output using UTF-8 encoding.
    try {
      TranscoderInput input = new TranscoderInput(svg);
      TranscoderOutput output = new TranscoderOutput(new BufferedWriter(new OutputStreamWriter(out, "UTF-8")));
      Transcoder t = new SVGTranscoder();
      t.transcode(input, output);
    }
    catch (TranscoderException e) {
      e.printStackTrace();
    }
    catch (UnsupportedEncodingException uee) {
      uee.printStackTrace();
    }
  }
 

import org.apache.batik.transcoder.Transcoder; //导入依赖的package包/类
public static void setTranscoderRectangleHint(Transcoder transcoder,
                                              String property,
                                              TranscodingHints.Key key){
    String str = System.getProperty(property);
    if(str != null){
        StringTokenizer st = new StringTokenizer(str, " ,");
        if(st.countTokens() != 4){
            handleValueError(property, str);
        }

        try{
            String x = st.nextToken();
            String y = st.nextToken();
            String width = st.nextToken();
            String height = st.nextToken();
            Rectangle2D r = new Rectangle2D.Float(Float.parseFloat(x),
                                                  Float.parseFloat(y),
                                                  Float.parseFloat(width),
                                                  Float.parseFloat(height));
            transcoder.addTranscodingHint(key, r);
        }catch(NumberFormatException e){
            handleValueError(property, str);
        }
    }
}
 

import org.apache.batik.transcoder.Transcoder; //导入依赖的package包/类
/**
 * Returns a transcoder object of the result image type.
 *
 * @return Transcoder object or <code>null</code> if there isn't a proper transcoder.
 */
protected Transcoder getTranscoder(){
    switch(code) {
        case PNG_CODE:
            return new PNGTranscoder();
        case JPEG_CODE:
            return new JPEGTranscoder();
        case TIFF_CODE:
            return new TIFFTranscoder();
        case PDF_CODE:
            try {
                Class pdfClass = Class.forName("org.apache.fop.svg.PDFTranscoder");
                return (Transcoder)pdfClass.newInstance();
            } catch(Exception e) {
                return null;
            }
        default:
            return null;
    }

}
 

import org.apache.batik.transcoder.Transcoder; //导入依赖的package包/类
private void convert(String svgFileName, String pngFileName)
{
	Transcoder transcoder = new PNGTranscoder();
       Map<TranscodingHints.Key, Float> hints = 
       	new HashMap<TranscodingHints.Key, Float>();
       hints.put(ImageTranscoder.KEY_MAX_HEIGHT, new Float(750));
       hints.put(ImageTranscoder.KEY_MAX_WIDTH, new Float(750));
       transcoder.setTranscodingHints(hints);
	
       try {
        TranscoderInput input = 
        	new TranscoderInput(new File(svgFileName).toURI().toString());
		TranscoderOutput output =
			new TranscoderOutput(new FileOutputStream(pngFileName));
	
		transcoder.transcode(input, output);
	} catch (Exception e) {
		throw new RuntimeException("Transcoding failed.", e);
	}
}
 

import org.apache.batik.transcoder.Transcoder; //导入依赖的package包/类
private void convert(String svgFileName, String pngFileName)
{
	Transcoder transcoder = new PNGTranscoder();
       Map<TranscodingHints.Key, Float> hints = 
       	new HashMap<TranscodingHints.Key, Float>();
       hints.put(ImageTranscoder.KEY_MAX_HEIGHT, new Float(200));
       hints.put(ImageTranscoder.KEY_MAX_WIDTH, new Float(750));
       transcoder.setTranscodingHints(hints);
	
       try {
        TranscoderInput input = 
        	new TranscoderInput(new File(svgFileName).toURI().toString());
		TranscoderOutput output =
			new TranscoderOutput(new FileOutputStream(pngFileName));
	
		transcoder.transcode(input, output);
	} catch (Exception e) {
		throw new RuntimeException("Transcoding failed.", e);
	}
}
 

import org.apache.batik.transcoder.Transcoder; //导入依赖的package包/类
public boolean proceedWithComputedTask(Transcoder transcoder,
                                       Map hints,
                                       List sources,
                                       List dest){
    System.out.println(Messages.formatMessage(MESSAGE_ABOUT_TO_TRANSCODE,
                                              new Object[]{"" + sources.size()}));
    return true;
}
 

import org.apache.batik.transcoder.Transcoder; //导入依赖的package包/类
@Override
public void export(Model model, OutputStream out) throws IOException, SerialisationException {
    InputStream svg = SvgExportUtils.stream(model);
    Transcoder transcoder = new EPSTranscoder();
    TranscoderInput transcoderInput = new TranscoderInput(svg);
    TranscoderOutput transcoderOutput = new TranscoderOutput(out);
    try {
        transcoder.transcode(transcoderInput, transcoderOutput);
    } catch (TranscoderException e) {
        throw new SerialisationException(e);
    }
}
 

import org.apache.batik.transcoder.Transcoder; //导入依赖的package包/类
@Override
public void export(Model model, OutputStream out) throws IOException, SerialisationException {
    InputStream svg = SvgExportUtils.stream(model);
    Transcoder transcoder = new PSTranscoder();
    TranscoderInput transcoderInput = new TranscoderInput(svg);
    TranscoderOutput transcoderOutput = new TranscoderOutput(out);
    try {
        transcoder.transcode(transcoderInput, transcoderOutput);
    } catch (TranscoderException e) {
        throw new SerialisationException(e);
    }
}
 

import org.apache.batik.transcoder.Transcoder; //导入依赖的package包/类
@Override
public void export(Model model, OutputStream out) throws IOException, SerialisationException {
    InputStream svg = SvgExportUtils.stream(model);
    Transcoder transcoder = new PDFTranscoder();
    TranscoderInput transcoderInput = new TranscoderInput(svg);
    TranscoderOutput transcoderOutput = new TranscoderOutput(out);
    try {
        transcoder.transcode(transcoderInput, transcoderOutput);
    } catch (TranscoderException e) {
        throw new SerialisationException(e);
    }
}
 

import org.apache.batik.transcoder.Transcoder; //导入依赖的package包/类
@Override
public void export(Model model, OutputStream out) throws IOException, SerialisationException {
    InputStream svg = SvgExportUtils.stream(model);
    Transcoder transcoder = new PNGTranscoder();
    TranscoderInput transcoderInput = new TranscoderInput(svg);
    TranscoderOutput transcoderOutput = new TranscoderOutput(out);
    try {
        transcoder.transcode(transcoderInput, transcoderOutput);
    } catch (TranscoderException e) {
        throw new SerialisationException(e);
    }
}
 

import org.apache.batik.transcoder.Transcoder; //导入依赖的package包/类
public static void setTranscoderFloatHint(Transcoder transcoder,
                                          String property,
                                          TranscodingHints.Key key){
    String str = System.getProperty(property);
    if(str != null){
        try{
            Float value = new Float(Float.parseFloat(str));
            transcoder.addTranscodingHint(key, value);
        }catch(NumberFormatException e){
            handleValueError(property, str);
        }
    }
}
 

import org.apache.batik.transcoder.Transcoder; //导入依赖的package包/类
public static void setTranscoderBooleanHint(Transcoder transcoder,
                                            String property,
                                            TranscodingHints.Key key){
    String str = System.getProperty(property);
    if(str != null){
        Boolean value = "true".equalsIgnoreCase(str) ? Boolean.TRUE : Boolean.FALSE;
        transcoder.addTranscodingHint(key, value);
    }
}
 

import org.apache.batik.transcoder.Transcoder; //导入依赖的package包/类
public static void setTranscoderStringHint(Transcoder transcoder,
                                          String property,
                                          TranscodingHints.Key key){
    String str = System.getProperty(property);
    if(str != null){
        transcoder.addTranscodingHint(key, str);
    }
}
 

import org.apache.batik.transcoder.Transcoder; //导入依赖的package包/类
public boolean proceedWithComputedTask(Transcoder transcoder,
                                       Map hints,
                                       List sources,
                                       List dest){
    computedConfig = new Config();
    computedConfig.transcoderClass = transcoder.getClass();
    computedConfig.sources = new ArrayList( sources );
    computedConfig.dest = new ArrayList( dest );
    computedConfig.hints = new HashMap(hints);
    return false; // Do not proceed with the convertion process,
    // we are only checking the config in this test.
}