Example usage for java.awt.image BufferedImage getHeight

Introduction

In this page you can find the example usage for java.awt.image BufferedImage getHeight.

Prototype

public int getHeight() 

Source Link

Document

Returns the height of the BufferedImage .

Usage

From source file:net.sf.mcf2pdf.mcfelements.util.ImageUtil.java

/**
 * Rotates the given buffered image by the given angle, and returns a newly
 * created image, containing the rotated image.
 *
 * @param img Image to rotate.//from  w w w. j  av  a  2  s  . c om
 * @param angle Angle, in radians, by which to rotate the image.
 * @param drawOffset Receives the offset which is required to draw the image,
 * relative to the original (0,0) corner, so that the center of the image is
 * still on the same position.
 *
 * @return A newly created image containing the rotated image.
 */
public static BufferedImage rotateImage(BufferedImage img, float angle, Point drawOffset) {
    int w = img.getWidth();
    int h = img.getHeight();

    AffineTransform tf = AffineTransform.getRotateInstance(angle, w / 2.0, h / 2.0);

    // get coordinates for all corners to determine real image size
    Point2D[] ptSrc = new Point2D[4];
    ptSrc[0] = new Point(0, 0);
    ptSrc[1] = new Point(w, 0);
    ptSrc[2] = new Point(w, h);
    ptSrc[3] = new Point(0, h);

    Point2D[] ptTgt = new Point2D[4];
    tf.transform(ptSrc, 0, ptTgt, 0, ptSrc.length);

    Rectangle rc = new Rectangle(0, 0, w, h);

    for (Point2D p : ptTgt) {
        if (p.getX() < rc.x) {
            rc.width += rc.x - p.getX();
            rc.x = (int) p.getX();
        }
        if (p.getY() < rc.y) {
            rc.height += rc.y - p.getY();
            rc.y = (int) p.getY();
        }
        if (p.getX() > rc.x + rc.width)
            rc.width = (int) (p.getX() - rc.x);
        if (p.getY() > rc.y + rc.height)
            rc.height = (int) (p.getY() - rc.y);
    }

    BufferedImage imgTgt = new BufferedImage(rc.width, rc.height, BufferedImage.TYPE_INT_ARGB);
    Graphics2D g2d = imgTgt.createGraphics();

    // create a NEW rotation transformation around new center
    tf = AffineTransform.getRotateInstance(angle, rc.getWidth() / 2, rc.getHeight() / 2);
    g2d.setTransform(tf);
    g2d.drawImage(img, -rc.x, -rc.y, null);
    g2d.dispose();

    drawOffset.x += rc.x;
    drawOffset.y += rc.y;

    return imgTgt;
}

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From source file:ConvertUtil.java

/**
 * Converts the source image to 4-bit colour using the given colour map. No
 * transparency./*from   www .  j  a  v  a 2 s . c  om*/
 * 
 * @param src
 *            the source image to convert
 * @param cmap
 *            the colour map, which should contain no more than 16 entries
 *            The entries are in the form RRGGBB (hex).
 * @return a copy of the source image with a 4-bit colour depth, with the
 *         custom colour pallette
 */
public static BufferedImage convert4(BufferedImage src, int[] cmap) {
    IndexColorModel icm = new IndexColorModel(4, cmap.length, cmap, 0, false, Transparency.OPAQUE,
            DataBuffer.TYPE_BYTE);
    BufferedImage dest = new BufferedImage(src.getWidth(), src.getHeight(), BufferedImage.TYPE_BYTE_BINARY,
            icm);
    ColorConvertOp cco = new ColorConvertOp(src.getColorModel().getColorSpace(),
            dest.getColorModel().getColorSpace(), null);
    cco.filter(src, dest);

    return dest;
}

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From source file:net.cloudkit.relaxation.CaptchaTest.java

public static void clearBorder(BufferedImage image) {
    final int width = image.getWidth();
    final int height = image.getHeight();

    // image.getMinX() image.getMinY()
    // //from w w  w.j a  v  a 2s  . co m
    for (int x = 0; x < width; x++) {
        image.setRGB(x, 0, Color.WHITE.getRGB());
    }

    // ?
    for (int y = 0; y < height; y++) {
        image.setRGB(width - 1, y, Color.WHITE.getRGB());
    }

    // 
    for (int x = 0; x < width; x++) {
        image.setRGB(x, height - 1, Color.WHITE.getRGB());
    }

    // 
    for (int y = 0; y < height; y++) {
        image.setRGB(0, y, Color.WHITE.getRGB());
    }
}

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From source file:com.github.zhanhb.ckfinder.connector.utils.ImageUtils.java

/**
 * creates dimension of thumb.//  w  w w . j  a va 2  s .  c  om
 *
 * @param image original image.
 * @param maxWidth max thumb width
 * @param maxHeight max thumb height
 * @return dimension of thumb image.
 */
private static Dimension createThumbDimension(BufferedImage image, int maxWidth, int maxHeight) {
    log.debug("image(w={},h={}), max w={}, max h={}", image.getWidth(), image.getHeight(), maxWidth, maxHeight);
    int width = image.getWidth(), height = image.getHeight();

    long w = (long) width * maxHeight;
    long h = (long) height * maxWidth;

    if (w > h) {
        if (width > maxWidth) {
            height = (int) Math.round(1.0 * h / width);
            width = maxWidth;
        }
    } else if (height > maxHeight) {
        width = (int) Math.round(1.0 * w / height);
        height = maxHeight;
    }
    log.debug("didmension w={}, h={}", width, height);
    return new Dimension(width, height);
}

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From source file:Main.java

private static ByteBuffer convertImageData(BufferedImage bufferedImage) {
    ByteBuffer imageBuffer;//from   ww w . j  av  a  2 s .c  o m
    WritableRaster raster;
    BufferedImage texImage;

    // for a texture
    if (bufferedImage.getColorModel().hasAlpha()) {
        raster = Raster.createInterleavedRaster(DataBuffer.TYPE_BYTE, bufferedImage.getWidth(),
                bufferedImage.getHeight(), 4, null);
        texImage = new BufferedImage(glAlphaColorModel, raster, false, new Hashtable<Object, Object>());
    } else {
        raster = Raster.createInterleavedRaster(DataBuffer.TYPE_BYTE, bufferedImage.getWidth(),
                bufferedImage.getHeight(), 3, null);
        texImage = new BufferedImage(glColorModel, raster, false, new Hashtable<Object, Object>());
    }

    // copy the source image into the produced image
    Graphics g = texImage.getGraphics();
    g.setColor(new Color(0f, 0f, 0f, 0f));
    g.fillRect(0, 0, bufferedImage.getWidth(), bufferedImage.getHeight());
    g.drawImage(bufferedImage, 0, 0, null);

    // build a byte buffer from the temporary image
    // that be used by OpenGL to produce a texture.
    byte[] data = ((DataBufferByte) bufferedImage.getRaster().getDataBuffer()).getData();

    imageBuffer = ByteBuffer.allocateDirect(data.length);
    imageBuffer.order(ByteOrder.nativeOrder());
    imageBuffer.put(data, 0, data.length);
    imageBuffer.flip();

    return imageBuffer;
}

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From source file:de.ppi.selenium.util.ScreenshotUtils.java

/**
 * Checks if a screenshot is complete black.
 *
 * @param var the image.//from  ww  w.j  a  v  a  2 s .c  om
 * @return true if it is black.
 */
private static boolean isBlack(BufferedImage var) {
    final int scale = 3;
    double[] varArr = new double[var.getWidth() * var.getHeight() * scale];
    // unroll pixels
    for (int i = 0; i < var.getHeight(); i++) {
        for (int j = 0; j < var.getWidth(); j++) {
            varArr[i * var.getWidth() + j + 0] = new Color(var.getRGB(j, i)).getRed();
            varArr[i * var.getWidth() + j + 1] = new Color(var.getRGB(j, i)).getGreen();
            varArr[i * var.getWidth() + j + 2] = new Color(var.getRGB(j, i)).getBlue();
        }
    }

    // test if all are black
    for (int i = 0; i != varArr.length; i++) {
        if (varArr[i] != 0) {
            return false;
        }
    }
    return true;
}

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From source file:de.bund.bfr.jung.JungUtils.java

private static Paint mixWith(Paint paint, Color mix) {
    if (paint instanceof Color) {
        Color c = (Color) paint;

        return new Color((c.getRed() + mix.getRed()) / 2, (c.getGreen() + mix.getGreen()) / 2,
                (c.getBlue() + mix.getBlue()) / 2, (c.getAlpha() + mix.getAlpha()) / 2);
    } else if (paint instanceof TexturePaint) {
        BufferedImage texture = ((TexturePaint) paint).getImage();
        BufferedImage mixed = new BufferedImage(texture.getWidth(), texture.getHeight(), texture.getType());

        for (int x = 0; x < texture.getWidth(); x++) {
            for (int y = 0; y < texture.getHeight(); y++) {
                mixed.setRGB(x, y, ((Color) mixWith(new Color(texture.getRGB(x, y)), mix)).getRGB());
            }// w  ww . ja  va 2  s.c o m
        }

        return new TexturePaint(mixed, new Rectangle(mixed.getWidth(), mixed.getHeight()));
    } else {
        return paint;
    }
}

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From source file:com.afis.jx.ckfinder.connector.utils.ImageUtils.java

/**
 * Creates image file with fixed width and height.
 *
 * @param sourceFile input file/*from ww w  .  j  a  v a2s.c  om*/
 * @param destFile file to save
 * @param width image width
 * @param height image height
 * @param quality image quality
 * @throws IOException when error occurs.
 */
public static void createResizedImage(final File sourceFile, final File destFile, final int width,
        final int height, final float quality) throws IOException {

    BufferedImage image = ImageIO.read(sourceFile);
    Dimension dimension = new Dimension(width, height);
    if (image.getHeight() == dimension.height && image.getWidth() == dimension.width) {
        writeUntouchedImage(sourceFile, destFile);
    } else {
        resizeImage(image, dimension.width, dimension.height, quality, destFile);

    }

}

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From source file:com.jaeksoft.searchlib.util.ImageUtils.java

public final static BufferedImage getSubimage(BufferedImage image, int x, int y, int width, int height) {
    if (width > image.getWidth() - x)
        width = image.getWidth() - x;//from  w ww .  j a v a  2s .  co m
    if (height > image.getHeight() - y)
        height = image.getHeight() - y;
    return image.getSubimage(x, y, width, height);
}

---

From source file:com.github.zhanhb.ckfinder.connector.utils.ImageUtils.java

/**
 * Creates image file with fixed width and height.
 *
 * @param sourceFile input file//from  w w  w  .  j  a  va2 s.  c o m
 * @param destFile file to save
 * @param width image width
 * @param height image height
 * @param quality image quality
 * @throws IOException when IO Exception occurs.
 */
public static void createResizedImage(Path sourceFile, Path destFile, int width, int height, float quality)
        throws IOException {
    BufferedImage image;
    try (InputStream is = Files.newInputStream(sourceFile)) {
        image = ImageIO.read(is);
    }
    if (image.getHeight() <= height && image.getWidth() <= width) {
        writeUntouchedImage(sourceFile, destFile);
    } else {
        resizeImage(image, width, height, quality, destFile);
    }
}

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