Examples with PixelGrabber java.awt.image.PixelGrabber used on opensource projects

Example 46 with PixelGrabber

use of java.awt.image.PixelGrabber in project LoboEvolution by LoboEvolution.

the class InputImage method hasAlpha.

private static boolean hasAlpha(Image image) {
    if (image instanceof BufferedImage) {
        BufferedImage bimage = (BufferedImage) image;
        return bimage.getColorModel().hasAlpha();
    }
    PixelGrabber pg = new PixelGrabber(image, 0, 0, 1, 1, false);
    try {
        pg.grabPixels();
    } catch (InterruptedException e) {
        logger.log(Level.SEVERE, e.getMessage(), e);
    }
    ColorModel cm = pg.getColorModel();
    return cm.hasAlpha();
}

Example 47 with PixelGrabber

use of java.awt.image.PixelGrabber in project vcell by virtualcell.

the class NativeImage method createPixels.

/**
 * This method was created in VisualAge.
 * @return byte[]
 */
private void createPixels() throws Exception {
    if (bPixelsExist()) {
        return;
    }
    PixelGrabber pg = new PixelGrabber(getJavaImage(), 0, 0, getSize().getX(), getSize().getX(), false);
    if (!pg.grabPixels()) {
        throw new Exception("Error getting pixels, status = " + pg.getStatus());
    }
    Object pixels = pg.getPixels();
    ColorModel colorModel = null;
    while (colorModel == null) {
        colorModel = pg.getColorModel();
    }
    if ((pixels instanceof int[]) && (colorModel instanceof DirectColorModel)) {
        newRGBAPixels = (int[]) pixels;
    } else if ((pixels instanceof byte[]) && (colorModel instanceof IndexColorModel)) {
        newIndexPixels = (byte[]) pixels;
        IndexColorModel indexColorModel = (IndexColorModel) colorModel;
        int colorMapSize = indexColorModel.getMapSize();
        byte[] temp_colorMap = new byte[colorMapSize * IndexColorMap.RGB_PACK_SIZE];
        byte[] reds = new byte[colorMapSize];
        indexColorModel.getReds(reds);
        byte[] greens = new byte[colorMapSize];
        indexColorModel.getGreens(greens);
        byte[] blues = new byte[colorMapSize];
        indexColorModel.getBlues(blues);
        for (int c = 0; c < colorMapSize; c += 1) {
            // make packed R,G,B array for ColorIndexModel
            int packCount = c * IndexColorMap.RGB_PACK_SIZE;
            temp_colorMap[packCount] = reds[c];
            temp_colorMap[packCount + 1] = greens[c];
            temp_colorMap[packCount + 2] = blues[c];
        }
        colorMap = new IndexColorMap(temp_colorMap);
    } else {
        throw new Exception("Unknown combination of data type=" + pixels.getClass().toString() + " and ColorModel=" + colorModel.getClass().toString());
    }
}

Example 48 with PixelGrabber

use of java.awt.image.PixelGrabber in project hale by halestudio.

the class ImageMarker method hasAlpha.

/**
 * Determines if an image has transparent pixels
 *
 * @param image the {@link Image}
 * @return if the given image has transparent pixels
 */
public static boolean hasAlpha(Image image) {
    // If buffered image, the color model is readily available
    if (image instanceof BufferedImage) {
        BufferedImage bimage = (BufferedImage) image;
        return bimage.getColorModel().hasAlpha();
    }
    // Use a pixel grabber to retrieve the image's color model;
    // grabbing a single pixel is usually sufficient
    PixelGrabber pg = new PixelGrabber(image, 0, 0, 1, 1, false);
    try {
        pg.grabPixels();
    } catch (InterruptedException e) {
    // ignore
    }
    // Get the image's color model
    ColorModel cm = pg.getColorModel();
    return cm.hasAlpha();
}

Example 49 with PixelGrabber

use of java.awt.image.PixelGrabber in project intellij-plugins by JetBrains.

the class ImageUtil method write.

public static void write(VirtualFile file, String mimeType, FileOutputStream out) throws IOException {
    Image image = Toolkit.getDefaultToolkit().createImage(file.contentsToByteArray());
    PixelGrabber pixelGrabber = new PixelGrabber(image, 0, 0, -1, -1, true);
    try {
        pixelGrabber.grabPixels();
    } catch (InterruptedException ignored) {
        throw new IOException("Failed to grab pixels for image " + file.getPresentableUrl());
    }
    if (((pixelGrabber.getStatus() & ImageObserver.WIDTH) == 0) || ((pixelGrabber.getStatus() & ImageObserver.HEIGHT) == 0)) {
        throw new IOException("Failed to grab pixels for image " + file.getPresentableUrl());
    }
    final byte[] byteBuffer = BUFFER.get();
    IOUtil.writeShort(pixelGrabber.getWidth(), byteBuffer, 0);
    IOUtil.writeShort(pixelGrabber.getHeight(), byteBuffer, 2);
    byteBuffer[4] = (byte) ((mimeType == null ? file.getName().endsWith(".jpg") : mimeType.equals("image/jpeg")) ? 0 : 1);
    out.write(byteBuffer, 0, 5);
    int bufferLength = 0;
    for (int pixel : (int[]) pixelGrabber.getPixels()) {
        byteBuffer[bufferLength++] = (byte) ((pixel >> 24) & 0xff);
        byteBuffer[bufferLength++] = (byte) ((pixel >> 16) & 0xff);
        byteBuffer[bufferLength++] = (byte) ((pixel >> 8) & 0xff);
        byteBuffer[bufferLength++] = (byte) (pixel & 0xff);
        if (bufferLength == MAX_BUFFER_LENGTH) {
            //noinspection ConstantConditions
            out.write(byteBuffer, 0, bufferLength);
            bufferLength = 0;
        }
    }
    if (bufferLength > 0) {
        out.write(byteBuffer, 0, bufferLength);
    }
}

Example 50 with PixelGrabber

use of java.awt.image.PixelGrabber in project intellij-community by JetBrains.

the class UIUtil method getColorAt.

@Nullable
public static Color getColorAt(final Icon icon, final int x, final int y) {
    if (0 <= x && x < icon.getIconWidth() && 0 <= y && y < icon.getIconHeight()) {
        final BufferedImage image = createImage(icon.getIconWidth(), icon.getIconHeight(), BufferedImage.TYPE_INT_RGB);
        icon.paintIcon(null, image.getGraphics(), 0, 0);
        final int[] pixels = new int[1];
        final PixelGrabber pixelGrabber = new PixelGrabber(image, x, y, 1, 1, pixels, 0, 1);
        try {
            pixelGrabber.grabPixels();
            return new Color(pixels[0]);
        } catch (InterruptedException ignored) {
        }
    }
    return null;
}