public File addImageToCache(
      BufferedImage image,
      JiraWorkflow workflow,
      int stepId,
      String width,
      String height,
      boolean showLabels,
      boolean maintainAspect)
      throws Exception {
    File file = getCacheFile(workflow, stepId, width, height, showLabels, maintainAspect);

    File baseDir = new File(file.getParent());
    if (!baseDir.exists()) {
      baseDir.mkdirs();
    }

    mxPngEncodeParam param = mxPngEncodeParam.getDefaultEncodeParam(image);
    FileOutputStream outputStream = new FileOutputStream(file);
    try {
      mxPngImageEncoder encoder = new mxPngImageEncoder(outputStream, param);
      encoder.encode(image);
    } finally {
      IOUtils.closeQuietly(outputStream);
    }

    return file;
  }
Beispiel #2
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  /** Saves XML+PNG format. */
  protected void saveXmlPng(TrackSchemeFrame frame, String filename, Color bg) throws IOException {
    final mxGraphComponent graphComponent = trackScheme.getGUI().graphComponent;
    final mxGraph graph = trackScheme.getGraph();

    // Creates the image for the PNG file
    BufferedImage image =
        mxCellRenderer.createBufferedImage(
            graph, null, 1, bg, graphComponent.isAntiAlias(), null, graphComponent.getCanvas());

    // Creates the URL-encoded XML data
    mxCodec codec = new mxCodec();
    String xml = URLEncoder.encode(mxXmlUtils.getXml(codec.encode(graph.getModel())), "UTF-8");
    mxPngEncodeParam param = mxPngEncodeParam.getDefaultEncodeParam(image);
    param.setCompressedText(new String[] {"mxGraphModel", xml});

    // Saves as a PNG file
    FileOutputStream outputStream = new FileOutputStream(new File(filename));
    try {
      mxPngImageEncoder encoder = new mxPngImageEncoder(outputStream, param);

      if (image != null) {
        encoder.encode(image);
      } else {
        JOptionPane.showMessageDialog(graphComponent, "No Image Data");
      }
    } finally {
      outputStream.close();
    }
  }