Example usage for javax.imageio.stream ImageInputStream length

Introduction

In this page you can find the example usage for javax.imageio.stream ImageInputStream length.

Prototype

long length() throws IOException;

Source Link

Document

Returns the total length of the stream, if known.

Usage

From source file:net.rptools.tokentool.util.ImageUtil.java

private static ImageView getImage(ImageView thumbView, final Path filePath, final boolean overlayWanted,
        final int THUMB_SIZE) throws IOException {
    Image thumb = null;//  w  w  w.  j a  va2s  .co m
    String fileURL = filePath.toUri().toURL().toString();

    if (ImageUtil.SUPPORTED_IMAGE_FILE_FILTER.accept(null, fileURL)) {
        if (THUMB_SIZE <= 0)
            thumb = processMagenta(new Image(fileURL), COLOR_THRESHOLD, overlayWanted);
        else
            thumb = processMagenta(new Image(fileURL, THUMB_SIZE, THUMB_SIZE, true, true), COLOR_THRESHOLD,
                    overlayWanted);
    } else if (ImageUtil.PSD_FILE_FILTER.accept(null, fileURL)) {
        ImageInputStream is = null;
        PSDImageReader reader = null;
        int imageIndex = 1;

        // Mask layer should always be layer 1 and overlay image on layer 2. Note, layer 0 will be a combined layer composite
        if (overlayWanted)
            imageIndex = 2;

        File file = filePath.toFile();

        try {
            is = ImageIO.createImageInputStream(file);
            if (is == null || is.length() == 0) {
                log.info("Image from file " + file.getAbsolutePath() + " is null");
            }

            Iterator<ImageReader> iterator = ImageIO.getImageReaders(is);
            if (iterator == null || !iterator.hasNext()) {
                throw new IOException("Image file format not supported by ImageIO: " + filePath);
            }

            reader = (PSDImageReader) iterator.next();
            reader.setInput(is);
            BufferedImage thumbBI;
            thumbBI = reader.read(imageIndex);

            if (thumbBI != null) {
                int layerIndex = 0;
                if (overlayWanted)
                    layerIndex = 1;

                IIOMetadata metadata = reader.getImageMetadata(0);
                IIOMetadataNode root = (IIOMetadataNode) metadata
                        .getAsTree(PSDMetadata.NATIVE_METADATA_FORMAT_NAME);
                NodeList layerInfos = root.getElementsByTagName("LayerInfo");

                // Layer index corresponds to imageIndex - 1 in the reader
                IIOMetadataNode layerInfo = (IIOMetadataNode) layerInfos.item(layerIndex);

                // Get the width & height of the Mask layer so we can create the overlay the same size
                int width = reader.getWidth(0);
                int height = reader.getHeight(0);

                // Get layer offsets, PhotoShop PSD layers can have different widths/heights and all images start at 0,0 with a layer offset applied
                int x = Math.max(Integer.parseInt(layerInfo.getAttribute("left")), 0);
                int y = Math.max(Integer.parseInt(layerInfo.getAttribute("top")), 0);

                // Lets pad the overlay with transparency to make it the same size as the PSD canvas size
                thumb = resizeCanvas(SwingFXUtils.toFXImage(thumbBI, null), width, height, x, y);

                // Finally set ImageView to thumbnail size
                if (THUMB_SIZE > 0) {
                    thumbView.setFitWidth(THUMB_SIZE);
                    thumbView.setPreserveRatio(true);
                }
            }
        } catch (Exception e) {
            log.error("Processing: " + file.getAbsolutePath(), e);
        } finally {
            // Dispose reader in finally block to avoid memory leaks
            reader.dispose();
            is.close();
        }
    }

    thumbView.setImage(thumb);

    return thumbView;
}

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