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

Example 21 with PixelGrabber

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

the class ImageConverter method getPixels.

public static int[] getPixels(BufferedImage image) {
    int iWidth = image.getWidth();
    int iHeight = image.getHeight();
    int numPixels = iWidth * iHeight;
    int[] rawPixels = new int[numPixels];
    if (rawPixels == null)
        return null;
    PixelGrabber grabber = new PixelGrabber(image, 0, 0, iWidth, iHeight, rawPixels, 0, iWidth);
    try {
        grabber.grabPixels();
    } catch (InterruptedException e) {
    // do nothing
    }
    return rawPixels;
}

Example 22 with PixelGrabber

use of java.awt.image.PixelGrabber in project astroimagej by keastrid.

the class ImagePlus method getPixel.

/**
 *	Returns the pixel value at (x,y) as a 4 element array. Grayscale values
 *	are retuned in the first element. RGB values are returned in the first
 *	3 elements. For indexed color images, the RGB values are returned in the
 *	first 3 three elements and the index (0-255) is returned in the last.
 */
public int[] getPixel(int x, int y) {
    pvalue[0] = pvalue[1] = pvalue[2] = pvalue[3] = 0;
    switch(imageType) {
        case GRAY8:
        case COLOR_256:
            int index;
            if (ip != null)
                index = ip.getPixel(x, y);
            else {
                byte[] pixels8;
                if (img == null)
                    return pvalue;
                PixelGrabber pg = new PixelGrabber(img, x, y, 1, 1, false);
                try {
                    pg.grabPixels();
                } catch (InterruptedException e) {
                    return pvalue;
                }
                ;
                pixels8 = (byte[]) (pg.getPixels());
                index = pixels8 != null ? pixels8[0] & 0xff : 0;
            }
            if (imageType != COLOR_256) {
                pvalue[0] = index;
                return pvalue;
            }
            pvalue[3] = index;
        // fall through to get rgb values
        case COLOR_RGB:
            if (ip != null && ip.getNChannels() == 1) {
                pvalue[0] = ip.getPixel(x, y);
                return pvalue;
            }
            int c = 0;
            if (imageType == COLOR_RGB && ip != null)
                c = ip.getPixel(x, y);
            else {
                int[] pixels32 = new int[1];
                if (img == null)
                    return pvalue;
                PixelGrabber pg = new PixelGrabber(img, x, y, 1, 1, pixels32, 0, width);
                try {
                    pg.grabPixels();
                } catch (InterruptedException e) {
                    return pvalue;
                }
                ;
                c = pixels32[0];
            }
            int r = (c & 0xff0000) >> 16;
            int g = (c & 0xff00) >> 8;
            int b = c & 0xff;
            pvalue[0] = r;
            pvalue[1] = g;
            pvalue[2] = b;
            break;
        case GRAY16:
        case GRAY32:
            if (ip != null)
                pvalue[0] = ip.getPixel(x, y);
            break;
    }
    return pvalue;
}

Example 23 with PixelGrabber

use of java.awt.image.PixelGrabber in project astroimagej by keastrid.

the class AstroStackWindow method hasAlpha.

// This method returns true if the specified 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) {
    }
    // Get the image's color model
    ColorModel cm = pg.getColorModel();
    return cm.hasAlpha();
}

Example 24 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 25 with PixelGrabber

use of java.awt.image.PixelGrabber in project visualvm by oracle.

the class ImagePanel method setPreferredBackground.

protected void setPreferredBackground() {
    int[] pixels = new int[1];
    PixelGrabber pg = null;
    switch(imageAlign) {
        case (SwingConstants.TOP):
            pg = new PixelGrabber(image, 0, image.getHeight(null) - 1, 1, 1, pixels, 0, 1);
            break;
        case (SwingConstants.BOTTOM):
            pg = new PixelGrabber(image, 0, 0, 1, 1, pixels, 0, 1);
            break;
        default:
            pg = new PixelGrabber(image, 0, image.getHeight(null) - 1, 1, 1, pixels, 0, 1);
    }
    try {
        if ((pg != null) && pg.grabPixels()) {
            setBackground(new Color(pixels[0]));
        }
    } catch (InterruptedException e) {
    }
}