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

            return "";
        }
    }


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


        addChildNode(root, "BMPVersion", bmpVersion);
        addChildNode(root, "Width", new Integer(width));
        addChildNode(root, "Height", new Integer(height));
        addChildNode(root, "BitsPerPixel", new Short(bitsPerPixel));
        addChildNode(root, "Compression", new Integer(compression));
        addChildNode(root, "ImageSize", new Integer(imageSize));


        IIOMetadataNode node = addChildNode(root, "PixelsPerMeter", null);
        addChildNode(node, "X", new Integer(xPixelsPerMeter));
        addChildNode(node, "Y", new Integer(yPixelsPerMeter));


        addChildNode(root, "ColorsUsed", new Integer(colorsUsed));
        addChildNode(root, "ColorsImportant", new Integer(colorsImportant));


        int version = 0;
        for (int i = 0; i < bmpVersion.length(); i++)
            if (Character.isDigit(bmpVersion.charAt(i)))
                version = bmpVersion.charAt(i) -'0';


        if (version >= 4) {
            node = addChildNode(root, "Mask", null);
            addChildNode(node, "Red", new Integer(redMask));
            addChildNode(node, "Green", new Integer(greenMask));
            addChildNode(node, "Blue", new Integer(blueMask));
            addChildNode(node, "Alpha", new Integer(alphaMask));


            addChildNode(root, "ColorSpaceType", new Integer(colorSpace));


            node = addChildNode(root, "CIEXYZEndPoints", null);
            addXYZPoints(node, "Red", redX, redY, redZ);
            addXYZPoints(node, "Green", greenX, greenY, greenZ);
            addXYZPoints(node, "Blue", blueX, blueY, blueZ);


            node = addChildNode(root, "Intent", new Integer(intent));
        }


        // Palette
        if ((palette != null) && (paletteSize > 0)) {
            node = addChildNode(root, "Palette", null);
            int numComps = palette.length / paletteSize;


            for (int i = 0, j = 0; i < paletteSize; i++) {
                IIOMetadataNode entry =
                    addChildNode(node, "PaletteEntry", null);
                red = palette[j++] & 0xff;
                green = palette[j++] & 0xff;
                blue = palette[j++] & 0xff;
                addChildNode(entry, "Red", new Byte((byte)red));

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    // Standard tree node methods
    protected IIOMetadataNode getStandardChromaNode() {


        if ((palette != null) && (paletteSize > 0)) {
            IIOMetadataNode node = new IIOMetadataNode("Chroma");
            IIOMetadataNode subNode = new IIOMetadataNode("Palette");
            int numComps = palette.length / paletteSize;
            subNode.setAttribute("value", "" + numComps);


            for (int i = 0, j = 0; i < paletteSize; i++) {
                IIOMetadataNode subNode1 = new IIOMetadataNode("PaletteEntry");
                subNode1.setAttribute("index", ""+i);
                subNode1.setAttribute("red", "" + palette[j++]);
                subNode1.setAttribute("green", "" + palette[j++]);
                subNode1.setAttribute("blue", "" + palette[j++]);
                if (numComps == 4 && palette[j] != 0)
                    subNode1.setAttribute("alpha", "" + palette[j++]);
                subNode.appendChild(subNode1);
            }
            node.appendChild(subNode);
            return node;
        }

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        return null;
    }


    protected IIOMetadataNode getStandardCompressionNode() {
        IIOMetadataNode node = new IIOMetadataNode("Compression");


        // CompressionTypeName
        IIOMetadataNode subNode = new IIOMetadataNode("CompressionTypeName");
        subNode.setAttribute("value", compressionTypeNames[compression]);
        node.appendChild(subNode);
        return node;
    }

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        node.appendChild(subNode);
        return node;
    }


    protected IIOMetadataNode getStandardDataNode() {
        IIOMetadataNode node = new IIOMetadataNode("Data");


        String bits = "";
        if (bitsPerPixel == 24)
            bits = "8 8 8 ";
        else if (bitsPerPixel == 16 || bitsPerPixel == 32) {
            bits = "" + countBits(redMask) + " " + countBits(greenMask) +
                  countBits(blueMask) + "" + countBits(alphaMask);
        }


        IIOMetadataNode subNode = new IIOMetadataNode("BitsPerSample");
        subNode.setAttribute("value", bits);
        node.appendChild(subNode);


        return node;
    }

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        return node;
    }


    protected IIOMetadataNode getStandardDimensionNode() {
        if (yPixelsPerMeter > 0.0F && xPixelsPerMeter > 0.0F) {
            IIOMetadataNode node = new IIOMetadataNode("Dimension");
            float ratio = yPixelsPerMeter / xPixelsPerMeter;
            IIOMetadataNode subNode = new IIOMetadataNode("PixelAspectRatio");
            subNode.setAttribute("value", "" + ratio);
            node.appendChild(subNode);


            subNode = new IIOMetadataNode("HorizontalPhysicalPixelSpacing");
            subNode.setAttribute("value", "" + (1 / xPixelsPerMeter * 1000));
            node.appendChild(subNode);


            subNode = new IIOMetadataNode("VerticalPhysicalPixelSpacing");
            subNode.setAttribute("value", "" + (1 / yPixelsPerMeter * 1000));
            node.appendChild(subNode);


            return node;
        }
        return null;

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        return count == 0 ? "" : "" + count;
    }


    private void addXYZPoints(IIOMetadataNode root, String name, double x, double y, double z) {
        IIOMetadataNode node = addChildNode(root, name, null);
        addChildNode(node, "X", new Double(x));
        addChildNode(node, "Y", new Double(y));
        addChildNode(node, "Z", new Double(z));
    }

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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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        }
        return newGuy;
    }


    IIOMetadataNode getNativeNode() {
        IIOMetadataNode node = new IIOMetadataNode("sos");
        node.setAttribute("numScanComponents",
                          Integer.toString(componentSpecs.length));
        node.setAttribute("startSpectralSelection",
                          Integer.toString(startSpectralSelection));
        node.setAttribute("endSpectralSelection",
                          Integer.toString(endSpectralSelection));
        node.setAttribute("approxHigh",
                          Integer.toString(approxHigh));
        node.setAttribute("approxLow",
                          Integer.toString(approxLow));
        for (int i = 0; i < componentSpecs.length; i++) {
            node.appendChild(componentSpecs[i].getNativeNode());
        }


        return node;
    }

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            writeGraphicsControlExtension = imageMetadata.transparentColorFlag;
        } else {
            // Check for GraphicControlExtension element.
            NodeList list = null;
            try {
                IIOMetadataNode root = (IIOMetadataNode)
                    imageMetadata.getAsTree(IMAGE_METADATA_NAME);
                list = root.getElementsByTagName("GraphicControlExtension");
            } catch(IllegalArgumentException iae) {
                // Should never happen.
            }


            // Set GraphicControlExtension flag if element present.

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            } catch (CloneNotSupportedException e) {} // won't happen
            return null;
        }


        IIOMetadataNode getNativeNode() {
            IIOMetadataNode node = new IIOMetadataNode("scanComponentSpec");
            node.setAttribute("componentSelector",
                              Integer.toString(componentSelector));
            node.setAttribute("dcHuffTable",
                              Integer.toString(dcHuffTable));
            node.setAttribute("acHuffTable",
                              Integer.toString(acHuffTable));
            return node;
        }

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