Java ImageSize.calcPixelsFromSize方法代码示例

import org.apache.xmlgraphics.image.loader.ImageSize; //导入方法依赖的package包/类
private ImageInfo createImageInfo(String uri, ImageContext context, Document doc)
            throws ConfigurationException, BarcodeException {
    Configuration cfg = ConfigurationUtil.buildConfiguration(doc);
    String msg = ConfigurationUtil.getMessage(cfg);
    msg = MessageUtil.unescapeUnicode(msg);

    int orientation = cfg.getAttributeAsInteger("orientation", 0);
    orientation = BarcodeDimension.normalizeOrientation(orientation);

    BarcodeGenerator bargen = BarcodeUtil.getInstance().
            createBarcodeGenerator(cfg);
    //Expand with null information and hope the size will match the actual barcode
    String expandedMsg = VariableUtil.getExpandedMessage((PageInfo)null, msg);
    BarcodeDimension bardim = bargen.calcDimensions(expandedMsg);
    int widthMpt = (int)Math.ceil(UnitConv.mm2mpt(bardim.getWidthPlusQuiet(orientation)));
    int heightMpt = (int)Math.ceil(UnitConv.mm2mpt(bardim.getHeightPlusQuiet(orientation)));

    ImageInfo info = new ImageInfo(uri, ImageLoaderFactoryBarcode.MIME_TYPE);
    ImageSize size = new ImageSize();
    size.setSizeInMillipoints(widthMpt, heightMpt);
    //Set the resolution to that of the FOUserAgent
    size.setResolution(context.getSourceResolution());
    size.calcPixelsFromSize();
    info.setSize(size);

    //The whole image had to be loaded to determine the image size, so keep that information
    ImageBarcode barcodeImage = new ImageBarcode(info, cfg, bardim);
    info.getCustomObjects().put(ImageInfo.ORIGINAL_IMAGE, barcodeImage);
    //Add the non-expanded message!
    info.getCustomObjects().put(ImageBarcode.MESSAGE, msg);
    return info;
}
 

import org.apache.xmlgraphics.image.loader.ImageSize; //导入方法依赖的package包/类
private ImageInfo getImage(String uri, Source src, ImageContext context) throws IOException {

        InputStream in = new UnclosableInputStream(ImageUtil.needInputStream(src));
        try {
            Document planDoc = getDocument(in);
            Element rootEl = planDoc.getDocumentElement();
            if (!PlanElementMapping.NAMESPACE.equals(
                    rootEl.getNamespaceURI())) {
                in.reset();
                return null;
            }

            //Have to render the plan to know its size
            PlanRenderer pr = new PlanRenderer();
            Document svgDoc = pr.createSVGDocument(planDoc);
            float width = pr.getWidth();
            float height = pr.getHeight();

            //Return converted SVG image
            ImageInfo info = new ImageInfo(uri, "image/svg+xml");
            final ImageSize size = new ImageSize();
            size.setSizeInMillipoints(
                    Math.round(width * 1000),
                    Math.round(height * 1000));
            //Set the resolution to that of the FOUserAgent
            size.setResolution(context.getSourceResolution());
            size.calcPixelsFromSize();
            info.setSize(size);

            //The whole image had to be loaded for this, so keep it
            Image image = new ImageXMLDOM(info, svgDoc,
                    svgDoc.getDocumentElement().getNamespaceURI());
            info.getCustomObjects().put(ImageInfo.ORIGINAL_IMAGE, image);

            return info;
        } catch (TransformerException e) {
            try {
                in.reset();
            } catch (IOException ioe) {
                // we're more interested in the original exception
            }
            log.debug("Error while trying to parsing a Plan file: "
                    + e.getMessage());
            return null;
        }
    }
 

import org.apache.xmlgraphics.image.loader.ImageSize; //导入方法依赖的package包/类
private ImageInfo createImageInfo(String uri, ImageContext context, SVGDocument doc) {
    Element e = doc.getRootElement();
    float pxUnitToMillimeter = UnitConv.IN2MM / context.getSourceResolution();
    UserAgent userAg = new SimpleSVGUserAgent(pxUnitToMillimeter,
                new AffineTransform()) {

        /** {@inheritDoc} */
        public void displayMessage(String message) {
            log.debug(message);
        }

    };
    BridgeContext ctx = new BridgeContext(userAg);
    UnitProcessor.Context uctx = UnitProcessor.createContext(ctx, e);

    String s;
    // 'width' attribute - default is 100%
    s = e.getAttributeNS(null, SVGOMDocument.SVG_WIDTH_ATTRIBUTE);
    if (s.length() == 0) {
        s = SVGOMDocument.SVG_SVG_WIDTH_DEFAULT_VALUE;
    }
    float width = UnitProcessor.svgHorizontalLengthToUserSpace(
            s, SVGOMDocument.SVG_WIDTH_ATTRIBUTE, uctx);

    // 'height' attribute - default is 100%
    s = e.getAttributeNS(null, SVGOMDocument.SVG_HEIGHT_ATTRIBUTE);
    if (s.length() == 0) {
        s = SVGOMDocument.SVG_SVG_HEIGHT_DEFAULT_VALUE;
    }
    float height = UnitProcessor.svgVerticalLengthToUserSpace(
            s, SVGOMDocument.SVG_HEIGHT_ATTRIBUTE, uctx);

    int widthMpt = (int)Math.round(px2mpt(width, context.getSourceResolution()));
    int heightMpt = (int)Math.round(px2mpt(height, context.getSourceResolution()));

    ImageInfo info = new ImageInfo(uri, MimeConstants.MIME_SVG);
    ImageSize size = new ImageSize();
    size.setSizeInMillipoints(widthMpt, heightMpt);
    //Set the resolution to that of the FOUserAgent
    size.setResolution(context.getSourceResolution());
    size.calcPixelsFromSize();
    info.setSize(size);

    //The whole image had to be loaded for this, so keep it
    ImageXMLDOM xmlImage = new ImageXMLDOM(info,
            doc, BatikImageFlavors.SVG_DOM);
    info.getCustomObjects().put(ImageInfo.ORIGINAL_IMAGE, xmlImage);
    return info;
}