Examples with ImageData org.xwiki.formula.ImageData used on opensource projects

Example 1 with ImageData

use of org.xwiki.formula.ImageData in project xwiki-platform by xwiki.

the class MathTranFormulaRenderer method renderImage.

@Override
protected ImageData renderImage(String formula, boolean inline, FormulaRenderer.FontSize size, FormulaRenderer.Type type) throws IllegalArgumentException, IOException {
    String encodedFormula = URLEncoder.encode((inline ? "" : "\\displaystyle") + formula, "UTF-8");
    GetMethod method = new GetMethod(MATHTRAN_BASE_URL + "D=" + Math.max(size.ordinal() - 3, 0) + "&tex=" + encodedFormula);
    method.setRequestHeader("accept", type.getMimetype());
    method.setFollowRedirects(true);
    // Execute the GET method
    int statusCode = this.client.executeMethod(method);
    if (statusCode >= HttpStatus.SC_OK && statusCode < HttpStatus.SC_BAD_REQUEST) {
        byte[] b = method.getResponseBody();
        method.releaseConnection();
        return new ImageData(b, type);
    }
    throw new IOException("Can't load image from MathTran server");
}

Example 2 with ImageData

use of org.xwiki.formula.ImageData in project xwiki-platform by xwiki.

the class TexAction method render.

@Override
public String render(XWikiContext context) throws XWikiException {
    XWikiRequest request = context.getRequest();
    XWikiResponse response = context.getResponse();
    String path = request.getRequestURI();
    // Expected /xwiki/bin/tex/Current/Document/image_identifier
    String filename = Util.decodeURI(path.substring(path.lastIndexOf("/") + 1), context);
    ImageStorage storage = Utils.getComponent(ImageStorage.class);
    ImageData image = storage.get(filename);
    if (image == null) {
        return "docdoesnotexist";
    }
    response.setContentLength(image.getData().length);
    response.setContentType(image.getMimeType());
    try {
        response.getOutputStream().write(image.getData());
    } catch (IOException e) {
        LOGGER.info("Failed to send image to the client");
    }
    return null;
}

Example 3 with ImageData

use of org.xwiki.formula.ImageData in project xwiki-platform by xwiki.

the class PDFResourceResolver method getResource.

@Override
public Resource getResource(URI uri) throws IOException {
    XWikiContext xcontext = xcontextProvider.get();
    Map<String, AttachmentReference> attachmentMap = (Map<String, AttachmentReference>) xcontext.get(PdfURLFactory.PDF_EXPORT_CONTEXT_KEY);
    if (attachmentMap != null) {
        String uriString = uri.toString();
        // implemented for TemporaryResource...
        if (uriString.contains(TEX_ACTION)) {
            // Note: See the comments in FormulaMacro to understand why we do a replace...
            AttachmentReference reference = attachmentMap.get(uriString.replace(TEX_ACTION, "/download/"));
            if (reference != null) {
                // Get the generated image's input stream
                ImageStorage storage = Utils.getComponent(ImageStorage.class);
                ImageData image = storage.get(reference.getName());
                return new Resource(new ByteArrayInputStream(image.getData()));
            }
        }
        // TODO: end HACK
        AttachmentReference reference = attachmentMap.get(uriString);
        if (reference != null) {
            try {
                XWikiDocument xdoc = xcontext.getWiki().getDocument(reference.extractReference(EntityType.DOCUMENT), xcontext);
                // TODO: handle revisions
                XWikiAttachment attachment = xdoc.getAttachment(reference.extractReference(EntityType.ATTACHMENT).getName());
                return new Resource(attachment.getContentInputStream(xcontext));
            } catch (Exception e) {
                throw new IOException(String.format("Failed to resolve export URI [%s]", uriString), e);
            }
        }
    }
    return this.standardResolver.getResource(uri);
}

Example 4 with ImageData

use of org.xwiki.formula.ImageData in project xwiki-platform by xwiki.

the class GoogleChartsFormulaRenderer method renderImage.

@Override
protected ImageData renderImage(String formula, boolean inline, FormulaRenderer.FontSize size, FormulaRenderer.Type type) throws IllegalArgumentException, IOException {
    String encodedFormula = URLEncoder.encode(formula, "UTF-8");
    GetMethod method = new GetMethod(SERVICE_BASE_URL + encodedFormula);
    method.setRequestHeader("accept", type.getMimetype());
    method.setFollowRedirects(true);
    // Execute the GET method
    int statusCode = this.client.executeMethod(method);
    if (statusCode >= HttpStatus.SC_OK && statusCode < HttpStatus.SC_BAD_REQUEST) {
        byte[] b = method.getResponseBody();
        method.releaseConnection();
        return new ImageData(b, type);
    }
    throw new IOException("Can't load image from the Google server");
}

Example 5 with ImageData

use of org.xwiki.formula.ImageData in project xwiki-platform by xwiki.

the class NativeFormulaRenderer method renderImage.

@Override
protected ImageData renderImage(String formula, boolean inline, FormulaRenderer.FontSize size, FormulaRenderer.Type type) throws IllegalArgumentException, IOException {
    File tmpDirectory = null;
    try {
        String texContent = "\\documentclass[10pt]{article}\n" + "\\usepackage[paperheight=1000in]{geometry}\n" + "\\usepackage{amsmath}\n" + "\\usepackage{amsfonts}\n" + "\\usepackage{amssymb}\n" + "\\usepackage{pst-plot}\n" + "\\usepackage{color}\n" + "\\pagestyle{empty}\n" + "\\begin{document}\n" + size.getCommand() + "\n" + wrapFormula(formula, inline) + "\\end{document}\n";
        do {
            tmpDirectory = new File(this.tempDirectory, RandomStringUtils.randomAlphanumeric(8));
        } while (tmpDirectory.exists());
        tmpDirectory.mkdir();
        final String baseName = tmpDirectory.getAbsolutePath() + "/file";
        final String texFileName = baseName + ".tex";
        final String dviFileName = baseName + ".dvi";
        final String psFileName = baseName + ".ps";
        final String imageFileName = baseName + type.getExtension();
        // Write the formula in a tex file
        FileWriter fw = new FileWriter(texFileName);
        fw.write(texContent);
        fw.close();
        // TeX to DVI
        String[] commandLine = new String[] { "latex", "--interaction=nonstopmode", texFileName };
        executeCommand(commandLine, tmpDirectory);
        // DVI to PS
        commandLine = new String[] { "dvips", "-E", dviFileName, "-o", psFileName };
        executeCommand(commandLine, tmpDirectory);
        // PS to image
        commandLine = new String[] { "convert", "-density", "120", psFileName, imageFileName };
        executeCommand(commandLine, tmpDirectory);
        return new ImageData(FileUtils.readFileToByteArray(new File(imageFileName)), type);
    } finally {
        FileUtils.deleteQuietly(tmpDirectory);
    }
}