Example usage for java.awt Graphics2D drawImage

Introduction

In this page you can find the example usage for java.awt Graphics2D drawImage.

Prototype

public abstract boolean drawImage(Image img, int x, int y, int width, int height, ImageObserver observer);

Source Link

Document

Draws as much of the specified image as has already been scaled to fit inside the specified rectangle.

Usage

From source file:com.taunova.app.libview.components.ImageHelpers.java

public static Image getScaledImage(BufferedImage image, int width) {
    Dimension d = getScaledDimension(image, width);
    Image scaledImage = image.getScaledInstance(d.width, d.height, Image.SCALE_SMOOTH);

    BufferedImage resizedImage = null;

    final boolean OPTIMIZE_SCALE = true;

    if (OPTIMIZE_SCALE) {
        ResampleOp resampleOp = new ResampleOp(100, 200);
        resampleOp.setUnsharpenMask(AdvancedResizeOp.UnsharpenMask.Normal);
        resizedImage = resampleOp.filter(image, null);
    } else {//from ww  w.ja  v  a  2  s.  com
        resizedImage = new BufferedImage(d.width, d.height, BufferedImage.TYPE_INT_RGB);
        Graphics2D g = resizedImage.createGraphics();
        g.setComposite(AlphaComposite.Src);
        g.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BILINEAR);
        g.setRenderingHint(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_QUALITY);
        g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
        g.drawImage(scaledImage, 0, 0, d.width, d.height, null);
        g.dispose();
    }

    return resizedImage;
}

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From source file:br.com.diegosilva.jsfcomponents.util.Utils.java

public static byte[] resizeImage(byte[] imageData, String contentType, int width) {
    ImageIcon icon = new ImageIcon(imageData);

    double ratio = (double) width / icon.getIconWidth();
    int resizedHeight = (int) (icon.getIconHeight() * ratio);

    int imageType = "image/png".equals(contentType) ? BufferedImage.TYPE_INT_ARGB : BufferedImage.TYPE_INT_RGB;
    BufferedImage bImg = new BufferedImage(width, resizedHeight, imageType);
    Graphics2D g2d = bImg.createGraphics();
    g2d.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BICUBIC);
    g2d.drawImage(icon.getImage(), 0, 0, width, resizedHeight, null);
    g2d.dispose();//  w  ww  .  j av a 2  s .  co m

    String formatName = "";
    if ("image/png".equals(contentType))
        formatName = "png";
    else if ("image/jpeg".equals(contentType) || "image/jpg".equals(contentType))
        formatName = "jpeg";

    ByteArrayOutputStream baos = new ByteArrayOutputStream(1024);
    try {
        ImageIO.write(bImg, formatName, baos);
        return baos.toByteArray();
    } catch (IOException ex) {
        throw new RuntimeException(ex);
    }
}

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From source file:de.mpg.imeji.logic.storage.util.ImageUtils.java

/**
 * Convenience method that returns a scaled instance of the provided {@link BufferedImage}.
 * //w ww  . ja va 2s . co m
 * @param img the original image to be scaled
 * @param targetWidth the desired width of the scaled instance, in pixels
 * @param targetHeight the desired height of the scaled instance, in pixels
 * @param hint one of the rendering hints that corresponds to {@code RenderingHints.KEY_INTERPOLATION} (e.g.
 *            {@code RenderingHints.VALUE_INTERPOLATION_NEAREST_NEIGHBOR},
 *            {@code RenderingHints.VALUE_INTERPOLATION_BILINEAR},
 *            {@code RenderingHints.VALUE_INTERPOLATION_BICUBIC})
 * @param higherQuality if true, this method will use a multi-step scaling technique that provides higher quality
 *            than the usual one-step technique (only useful in downscaling cases, where {@code targetWidth} or
 *            {@code targetHeight} is smaller than the original dimensions, and generally only when the
 *            {@code BILINEAR} hint is specified)
 * @return a scaled version of the original {@link BufferedImage}
 */
public static BufferedImage getScaledInstance(BufferedImage img, int targetWidth, int targetHeight, Object hint,
        boolean higherQuality) {
    int type = (img.getTransparency() == Transparency.OPAQUE) ? BufferedImage.TYPE_INT_RGB
            : BufferedImage.TYPE_INT_ARGB;
    BufferedImage ret = img;
    int w, h;
    if (higherQuality) {
        // Use multi-step technique: start with original size, then
        // scale down in multiple passes with drawImage()
        // until the target size is reached
        w = img.getWidth();
        h = img.getHeight();
    } else {
        // Use one-step technique: scale directly from original
        // size to target size with a single drawImage() call
        w = targetWidth;
        h = targetHeight;
    }
    do {
        if (higherQuality && w > targetWidth) {
            w /= 2;
            if (w < targetWidth) {
                w = targetWidth;
            }
        }
        if (higherQuality && h > targetHeight) {
            h /= 2;
            if (h < targetHeight) {
                h = targetHeight;
            }
        }
        BufferedImage tmp = new BufferedImage(w, h, type);
        Graphics2D g2 = tmp.createGraphics();
        g2.setRenderingHint(RenderingHints.KEY_INTERPOLATION, hint);
        g2.drawImage(ret, 0, 0, w, h, null);
        g2.dispose();
        ret = tmp;
    } while (w != targetWidth || h != targetHeight);
    return ret;
}

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From source file:com.cmart.PageControllers.SellItemImagesController.java

private static BufferedImage resizeImageWithHint(BufferedImage originalImage, int type, int width, int height) {

    BufferedImage resizedImage = new BufferedImage(width, width, type);
    Graphics2D g = resizedImage.createGraphics();
    g.drawImage(originalImage, 0, 0, width, width, null);
    g.dispose();//  w  ww .ja v a2  s  .c  om
    g.setComposite(AlphaComposite.Src);

    g.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BILINEAR);
    g.setRenderingHint(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_QUALITY);
    g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);

    return resizedImage;
}

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From source file:eu.planets_project.tb.impl.data.util.ImageThumbnail.java

/**
 * Create a scaled jpeg of an image. The width/height ratio is preserved.
 * //w  w w . j  av  a2  s  .c om
 * <p>
 * If image is smaller than thumbWidth x thumbHeight, it will be magnified,
 * otherwise it will be scaled down.
 * </p>
 * 
 * @param image
 *            the image to reduce
 * @param thumbWidth
 *            the maximum width of the thumbnail
 * @param thumbHeight
 *            the maximum heigth of the thumbnail
 * @param quality
 *            the jpeg quality ot the thumbnail
 * @param out
 *            a stream where the thumbnail data is written to
 */
public static void createThumb(Image image, int thumbWidth, int thumbHeight, OutputStream out)
        throws Exception {
    int imageWidth = image.getWidth(null);
    int imageHeight = image.getHeight(null);
    double thumbRatio = (double) thumbWidth / (double) thumbHeight;
    double imageRatio = (double) imageWidth / (double) imageHeight;
    if (thumbRatio < imageRatio) {
        thumbHeight = (int) (thumbWidth / imageRatio);
    } else {
        thumbWidth = (int) (thumbHeight * imageRatio);
    }
    // draw original image to thumbnail image object and
    // scale it to the new size on-the-fly
    BufferedImage thumbImage = new BufferedImage(thumbWidth, thumbHeight, BufferedImage.TYPE_INT_ARGB);
    Graphics2D graphics2D = thumbImage.createGraphics();
    graphics2D.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BICUBIC);
    graphics2D.setRenderingHint(RenderingHints.KEY_ALPHA_INTERPOLATION,
            RenderingHints.VALUE_ALPHA_INTERPOLATION_QUALITY);
    graphics2D.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
    graphics2D.drawImage(image, 0, 0, thumbWidth, thumbHeight, null);
    // save thumbnail image to out stream
    log.debug("Start writing rescaled image...");
    ImageIO.write(thumbImage, "png", out);
    log.debug("DONE writing rescaled image...");
}

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From source file:net.rptools.lib.image.ImageUtil.java

/**
 * Create a copy of the image that is compatible with the current graphics context and scaled to the supplied size
 *//*  w  ww .j a  v a2 s .c o  m*/
public static BufferedImage createCompatibleImage(Image img, int width, int height, Map<String, Object> hints) {
    width = Math.max(width, 1);
    height = Math.max(height, 1);

    int transparency;
    if (hints != null && hints.containsKey(HINT_TRANSPARENCY)) {
        transparency = (Integer) hints.get(HINT_TRANSPARENCY);
    } else {
        transparency = pickBestTransparency(img);
    }
    BufferedImage compImg = new BufferedImage(width, height, transparency);

    Graphics2D g = null;
    try {
        g = compImg.createGraphics();
        g.setRenderingHint(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_QUALITY);

        g.drawImage(img, 0, 0, width, height, null);
    } finally {
        if (g != null) {
            g.dispose();
        }
    }
    return compImg;
}

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From source file:net.sourceforge.subsonic.controller.CoverArtControllerEx.java

public static BufferedImage scale(BufferedImage image, int width, int height) {
    int w = image.getWidth();
    int h = image.getHeight();
    BufferedImage thumb = image;//from   ww w  . jav  a 2  s  . co m

    // For optimal results, use step by step bilinear resampling - halfing the size at each step.
    do {
        w /= 2;
        h /= 2;
        if (w < width) {
            w = width;
        }
        if (h < height) {
            h = height;
        }

        double thumbRatio = (double) width / (double) height;
        double aspectRatio = (double) w / (double) h;

        //            LOG.debug("## thumbsRatio: " + thumbRatio);
        //            LOG.debug("## aspectRatio: " + aspectRatio);

        if (thumbRatio < aspectRatio) {
            h = (int) (w / aspectRatio);
        } else {
            w = (int) (h * aspectRatio);
        }

        BufferedImage temp = new BufferedImage(w, h, BufferedImage.TYPE_INT_RGB);
        Graphics2D g2 = temp.createGraphics();
        g2.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BILINEAR);
        g2.drawImage(thumb, 0, 0, w, h, null);
        g2.dispose();

        thumb = temp;
    } while (w != width);

    //FIXME: check
    if (thumb.getHeight() > thumb.getWidth()) {
        thumb = thumb.getSubimage(0, 0, thumb.getWidth(), thumb.getWidth());
    }
    return thumb;
}

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From source file:com.t3.image.ImageUtil.java

/**
 * Create a copy of the image that is compatible with the current graphics context
 * and scaled to the supplied size//w w  w  .  j  a va2  s.  c om
 */
public static BufferedImage createCompatibleImage(Image img, int width, int height, Map<String, Object> hints) {

    width = Math.max(width, 1);
    height = Math.max(height, 1);

    int transparency;
    if (hints != null && hints.containsKey(HINT_TRANSPARENCY)) {
        transparency = (Integer) hints.get(HINT_TRANSPARENCY);
    } else {
        transparency = pickBestTransparency(img);
    }
    BufferedImage compImg = new BufferedImage(width, height, transparency);

    Graphics2D g = null;
    try {
        g = compImg.createGraphics();
        g.setRenderingHint(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_QUALITY);

        g.drawImage(img, 0, 0, width, height, null);
    } finally {
        if (g != null) {
            g.dispose();
        }
    }

    return compImg;
}

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From source file:com.silverpeas.thumbnail.control.ThumbnailController.java

protected static void createCropThumbnailFileOnServer(String pathOriginalFile, String pathCropdir,
        String pathCropFile, ThumbnailDetail thumbnail, int thumbnailWidth, int thumbnailHeight) {
    try {//  ww w. j a va 2 s. c o  m
        // Creates folder if not exists
        File dir = new File(pathCropdir);
        if (!dir.exists()) {
            FileFolderManager.createFolder(pathCropdir);
        }
        // create empty file
        File cropFile = new File(pathCropFile);
        if (!cropFile.exists()) {
            cropFile.createNewFile();
        }

        File originalFile = new File(pathOriginalFile);
        BufferedImage bufferOriginal = ImageIO.read(originalFile);
        // crop image
        BufferedImage cropPicture = bufferOriginal.getSubimage(thumbnail.getXStart(), thumbnail.getYStart(),
                thumbnail.getXLength(), thumbnail.getYLength());
        BufferedImage cropPictureFinal = new BufferedImage(thumbnailWidth, thumbnailHeight,
                BufferedImage.TYPE_INT_RGB);
        // Redimensionnement de l'image
        Graphics2D g2 = cropPictureFinal.createGraphics();
        g2.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BICUBIC);
        g2.drawImage(cropPicture, 0, 0, thumbnailWidth, thumbnailHeight, null);
        g2.dispose();

        // save crop image
        String extension = FilenameUtils.getExtension(originalFile.getName());
        ImageIO.write(cropPictureFinal, extension, cropFile);
    } catch (Exception e) {
        SilverTrace.warn("thumbnail", "ThumbnailController.createThumbnailFileOnServer()",
                "thumbnail_MSG_CREATE_CROP_FILE_KO", "originalFileName=" + thumbnail.getOriginalFileName()
                        + " cropFileName = " + thumbnail.getCropFileName(),
                e);
    }
}

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From source file:game.com.HandleUploadGameThumbServlet.java

public static BufferedImage resizeImage(final Image image, int width, int height) {
    final BufferedImage bufferedImage = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
    final Graphics2D graphics2D = bufferedImage.createGraphics();
    graphics2D.setComposite(AlphaComposite.Src);
    //below three lines are for RenderingHints for better image quality at cost of higher processing time
    graphics2D.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BILINEAR);
    graphics2D.setRenderingHint(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_QUALITY);
    graphics2D.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
    graphics2D.drawImage(image, 0, 0, width, height, null);
    graphics2D.dispose();/*w  w w  . java2 s. c o  m*/
    return bufferedImage;
}

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