Examples of ae.javax.imageio.metadata.IIOMetadataNode

ae.javax.imageio.metadata.IIOMetadataNode
A class representing a node in a meta-data tree, which implements the org.w3c.dom.Element interface and additionally allows for the storage of non-textual objects via the getUserObject and setUserObject methods.
This class is not intended to be used for general XML processing. In particular, Element nodes created within the Image I/O API are not compatible with those created by Sun's standard implementation of the org.w3.dom API. In particular, the implementation is tuned for simple uses and may not perform well for intensive processing.
Namespaces are ignored in this implementation. The terms "tag name" and "node name" are always considered to be synonymous. Note: The DOM Level 3 specification added a number of new methods to the {@code Node}, {@code Element} and {@code Attr} interfaces that are notof value to the {@code IIOMetadataNode} implementation or specification.Calling such methods on an {@code IIOMetadataNode}, or an {@code Attr}instance returned from an {@code IIOMetadataNode} will result in a{@code DOMException} being thrown. @see IIOMetadata#getAsTree @see IIOMetadata#setFromTree @see IIOMetadata#mergeTree

        Iterator commentIter = comments.iterator();
        if (!commentIter.hasNext()) {
            return null;
        }


        IIOMetadataNode text_node = new IIOMetadataNode("Text");
        IIOMetadataNode node = null; // scratch node


        while (commentIter.hasNext()) {
            byte[] comment = (byte[])commentIter.next();
            String s = null;
            try {
                s = new String(comment, "ISO-8859-1");
            } catch (UnsupportedEncodingException e) {
                throw new RuntimeException("Encoding ISO-8859-1 unknown!");
            }


            node = new IIOMetadataNode("TextEntry");
            node.setAttribute("value", s);
            node.setAttribute("encoding", "ISO-8859-1");
            node.setAttribute("compression", "none");
            text_node.appendChild(node);
        }


        return text_node;
    }

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    public IIOMetadataNode getStandardTransparencyNode() {
        if (!transparentColorFlag) {
            return null;
        }


        IIOMetadataNode transparency_node =
            new IIOMetadataNode("Transparency");
        IIOMetadataNode node = null; // scratch node


        // Alpha not in format


        node = new IIOMetadataNode("TransparentIndex");
        node.setAttribute("value",
                          Integer.toString(transparentColorIndex));
        transparency_node.appendChild(node);


        // TransparentColor not in format
        // TileTransparencies not in format

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            throw new IllegalArgumentException(I18N.getString("WBMPMetadata0"));
        }
    }


    private Node getNativeTree() {
        IIOMetadataNode root =
            new IIOMetadataNode(nativeMetadataFormatName);


        addChildNode(root, "WBMPType", new Integer(wbmpType));
        addChildNode(root, "Width", new Integer(width));
        addChildNode(root, "Height", new Integer(height));

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    }


    private IIOMetadataNode addChildNode(IIOMetadataNode root,
                                         String name,
                                         Object object) {
        IIOMetadataNode child = new IIOMetadataNode(name);
        if (object != null) {
            child.setUserObject(object);
            child.setNodeValue(ImageUtil.convertObjectToString(object));
        }
        root.appendChild(child);
        return child;
    }

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    }




    protected IIOMetadataNode getStandardChromaNode() {


        IIOMetadataNode node = new IIOMetadataNode("Chroma");
        IIOMetadataNode subNode = new IIOMetadataNode("BlackIsZero");
        subNode.setAttribute("value", "TRUE");


        node.appendChild(subNode);
        return node;
    }

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        return node;
    }




    protected IIOMetadataNode getStandardDimensionNode() {
        IIOMetadataNode dimension_node = new IIOMetadataNode("Dimension");
        IIOMetadataNode node = null; // scratch node


        // PixelAspectRatio not in image


        node = new IIOMetadataNode("ImageOrientation");
        node.setAttribute("value", "Normal");
        dimension_node.appendChild(node);


        return dimension_node;
    }

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            throw new IllegalArgumentException("Not a recognized format!");
        }
    }


    private Node getNativeTree() {
        IIOMetadataNode node; // scratch node
        IIOMetadataNode root =
            new IIOMetadataNode(nativeMetadataFormatName);


        node = new IIOMetadataNode("Version");
        node.setAttribute("value", version);
        root.appendChild(node);


        // Image descriptor
        node = new IIOMetadataNode("LogicalScreenDescriptor");
        /* NB: At the moment we use empty strings to support undefined
         * integer values in tree representation.
         * We need to add better support for undefined/default values later.
         */
        node.setAttribute("logicalScreenWidth",
                          logicalScreenWidth == UNDEFINED_INTEGER_VALUE ?
                          "" : Integer.toString(logicalScreenWidth));
        node.setAttribute("logicalScreenHeight",
                          logicalScreenHeight == UNDEFINED_INTEGER_VALUE ?
                          "" : Integer.toString(logicalScreenHeight));
        // Stored value plus one
        node.setAttribute("colorResolution",
                          colorResolution == UNDEFINED_INTEGER_VALUE ?
                          "" : Integer.toString(colorResolution));
        node.setAttribute("pixelAspectRatio",
                          Integer.toString(pixelAspectRatio));
        root.appendChild(node);


        if (globalColorTable != null) {
            node = new IIOMetadataNode("GlobalColorTable");
            int numEntries = globalColorTable.length/3;
            node.setAttribute("sizeOfGlobalColorTable",
                              Integer.toString(numEntries));
            node.setAttribute("backgroundColorIndex",
                              Integer.toString(backgroundColorIndex));
            node.setAttribute("sortFlag",
                              sortFlag ? "TRUE" : "FALSE");


            for (int i = 0; i < numEntries; i++) {
                IIOMetadataNode entry =
                    new IIOMetadataNode("ColorTableEntry");
                entry.setAttribute("index", Integer.toString(i));
                int r = globalColorTable[3*i] & 0xff;
                int g = globalColorTable[3*i + 1] & 0xff;
                int b = globalColorTable[3*i + 2] & 0xff;
                entry.setAttribute("red", Integer.toString(r));
                entry.setAttribute("green", Integer.toString(g));
                entry.setAttribute("blue", Integer.toString(b));
                node.appendChild(entry);
            }
            root.appendChild(node);
        }

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        return root;
    }


    public IIOMetadataNode getStandardChromaNode() {
        IIOMetadataNode chroma_node = new IIOMetadataNode("Chroma");
        IIOMetadataNode node = null; // scratch node


        node = new IIOMetadataNode("ColorSpaceType");
        node.setAttribute("name", "RGB");
        chroma_node.appendChild(node);


        node = new IIOMetadataNode("BlackIsZero");
        node.setAttribute("value", "TRUE");
        chroma_node.appendChild(node);


        // NumChannels not in stream
        // Gamma not in format


        if (globalColorTable != null) {
            node = new IIOMetadataNode("Palette");
            int numEntries = globalColorTable.length/3;
            for (int i = 0; i < numEntries; i++) {
                IIOMetadataNode entry =
                    new IIOMetadataNode("PaletteEntry");
                entry.setAttribute("index", Integer.toString(i));
                entry.setAttribute("red",
                           Integer.toString(globalColorTable[3*i] & 0xff));
                entry.setAttribute("green",
                           Integer.toString(globalColorTable[3*i + 1] & 0xff));
                entry.setAttribute("blue",
                           Integer.toString(globalColorTable[3*i + 2] & 0xff));
                node.appendChild(entry);
            }
            chroma_node.appendChild(node);


            // backgroundColorIndex is valid iff there is a color table
            node = new IIOMetadataNode("BackgroundIndex");
            node.setAttribute("value", Integer.toString(backgroundColorIndex));
            chroma_node.appendChild(node);
        }


        return chroma_node;

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        return chroma_node;
    }


    public IIOMetadataNode getStandardCompressionNode() {
        IIOMetadataNode compression_node = new IIOMetadataNode("Compression");
        IIOMetadataNode node = null; // scratch node


        node = new IIOMetadataNode("CompressionTypeName");
        node.setAttribute("value", "lzw");
        compression_node.appendChild(node);


        node = new IIOMetadataNode("Lossless");
        node.setAttribute("value", "true");
        compression_node.appendChild(node);


        // NumProgressiveScans not in stream
        // BitRate not in format

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        return compression_node;
    }


    public IIOMetadataNode getStandardDataNode() {
        IIOMetadataNode data_node = new IIOMetadataNode("Data");
        IIOMetadataNode node = null; // scratch node


        // PlanarConfiguration


        node = new IIOMetadataNode("SampleFormat");
        node.setAttribute("value", "Index");
        data_node.appendChild(node);


        node = new IIOMetadataNode("BitsPerSample");
        node.setAttribute("value",
                          colorResolution == UNDEFINED_INTEGER_VALUE ?
                          "" : Integer.toString(colorResolution));
        data_node.appendChild(node);


        // SignificantBitsPerSample

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