Example usage for java.awt.image BufferedImage getGraphics

Introduction

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

Prototype

public java.awt.Graphics getGraphics()

Source Link

Document

This method returns a Graphics2D , but is here for backwards compatibility.

Usage

From source file:SaveImage.java

public SaveImage() {
    try {/*from  w  w w.ja  v a  2s . com*/
        bi = ImageIO.read(new File("bld.jpg"));
        w = bi.getWidth(null);
        h = bi.getHeight(null);
        if (bi.getType() != BufferedImage.TYPE_INT_RGB) {
            BufferedImage bi2 = new BufferedImage(w, h, BufferedImage.TYPE_INT_RGB);
            Graphics big = bi2.getGraphics();
            big.drawImage(bi, 0, 0, null);
            biFiltered = bi = bi2;
        }
    } catch (IOException e) {
        System.out.println("Image could not be read");
        System.exit(1);
    }
}

From source file:com.aistor.common.servlet.ValidateCodeServlet.java

private void createImage(HttpServletRequest request, HttpServletResponse response) throws IOException {

    response.setHeader("Pragma", "no-cache");
    response.setHeader("Cache-Control", "no-cache");
    response.setDateHeader("Expires", 0);
    response.setContentType("image/jpeg");

    /*//from   ww  w  . j a va 2  s . c  om
     * ??
     */
    String width = request.getParameter("width");
    String height = request.getParameter("height");
    if (StringUtils.isNumeric(width) && StringUtils.isNumeric(height)) {
        w = NumberUtils.toInt(width);
        h = NumberUtils.toInt(height);
    }

    BufferedImage image = new BufferedImage(w, h, BufferedImage.TYPE_INT_RGB);
    Graphics g = image.getGraphics();

    /*
     * ?
     */
    createBackground(g);

    /*
     * ?
     */
    String s = createCharacter(g);
    request.getSession().setAttribute("validateCode", s);

    g.dispose();
    OutputStream out = response.getOutputStream();
    ImageIO.write(image, "JPEG", out);
    out.close();

}

From source file:com.eryansky.common.web.servlet.ValidateCodeServlet.java

private void createImage(HttpServletRequest request, HttpServletResponse response) throws IOException {

    response.setHeader("Pragma", "no-cache");
    response.setHeader("Cache-Control", "no-cache");
    response.setDateHeader("Expires", 0);
    response.setContentType("image/jpeg");

    /*//  www  . jav a 2  s .  c  o m
     * ??
     */
    String width = request.getParameter("width");
    String height = request.getParameter("height");
    if (StringUtils.isNumeric(width) && StringUtils.isNumeric(height)) {
        w = NumberUtils.toInt(width);
        h = NumberUtils.toInt(height);
    }

    BufferedImage image = new BufferedImage(w, h, BufferedImage.TYPE_INT_RGB);
    Graphics g = image.getGraphics();

    /*
     * ?
     */
    createBackground(g);

    /*
     * ?
     */
    String s = createCharacter(g);
    request.getSession().setAttribute(SysConstants.SESSION_VALIDATE_CODE, s);

    g.dispose();
    OutputStream out = response.getOutputStream();
    ImageIO.write(image, "JPEG", out);
    out.close();

}

From source file:apm.common.servlet.ValidateCodeServlet.java

private void createImage(HttpServletRequest request, HttpServletResponse response) throws IOException {

    response.setHeader("Pragma", "no-cache");
    response.setHeader("Cache-Control", "no-cache");
    response.setDateHeader("Expires", 0);
    response.setContentType("image/jpeg");

    /*/*from  w w w  .j a  va2s .  c  o m*/
     * ??
     */
    String width = request.getParameter("width");
    String height = request.getParameter("height");
    if (StringUtils.isNumeric(width) && StringUtils.isNumeric(height)) {
        w = NumberUtils.toInt(width);
        h = NumberUtils.toInt(height);
    }

    BufferedImage image = new BufferedImage(w, h, BufferedImage.TYPE_INT_RGB);
    Graphics g = image.getGraphics();

    /*
     * ?
     */
    createBackground(g);

    /*
     * ?
     */
    String s = createCharacter(g);
    request.getSession().setAttribute(VALIDATE_CODE, s);

    g.dispose();
    OutputStream out = response.getOutputStream();
    ImageIO.write(image, "JPEG", out);
    out.close();

}

From source file:ImageDrawingComponent.java

public ImageDrawingComponent(URL imageSrc) {
    try {/*from   www .  j  av  a2 s  . co m*/
        bi = ImageIO.read(imageSrc);
        w = bi.getWidth(null);
        h = bi.getHeight(null);
        if (bi.getType() != BufferedImage.TYPE_INT_RGB) {
            BufferedImage bi2 = new BufferedImage(w, h, BufferedImage.TYPE_INT_RGB);
            Graphics big = bi2.getGraphics();
            big.drawImage(bi, 0, 0, null);
            bi = bi2;
        }
    } catch (IOException e) {
        System.out.println("Image could not be read");
        System.exit(1);
    }
}

From source file:de.anycook.upload.UploadHandler.java

/**
 * speichert eine grosse Version des Bildes
 *
 * @param image    BufferedImage/*ww w. j  a va2s  .  c  o m*/
 * @param filename Name der zu erzeugenden Datei
 */
private void saveOriginalImage(BufferedImage image, String filename) throws IOException {
    int height = image.getHeight();
    int width = image.getWidth();

    BufferedImage newImage = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
    newImage.getGraphics().drawImage(image, 0, 0, null);

    imageSaver.save("original/", filename, newImage);

}

From source file:WaitingImageObserver.java

/**
 * The workerthread. Simply draws the image to a BufferedImage's
 * Graphics-Object and waits for the AWT to load the image.
 *//*from   w w  w .j a  va 2  s .  c o m*/
public synchronized void waitImageLoaded() {

    if (this.lock == false) {
        return;
    }

    final BufferedImage img = new BufferedImage(1, 1, BufferedImage.TYPE_INT_RGB);
    final Graphics g = img.getGraphics();

    while (this.lock) {
        if (g.drawImage(this.image, 0, 0, img.getWidth(this), img.getHeight(this), this)) {
            return;
        }

        try {
            wait(500);
        } catch (InterruptedException e) {
            System.out.println("WaitingImageObserver.waitImageLoaded(): InterruptedException thrown" + e);
        }
    }
}

From source file:de.anycook.upload.UploadHandler.java

/**
 * speichert eine grosse Version des Bildes
 *
 * @param image    BufferedImage/*from   w w w .ja v  a2s. c o m*/
 * @param filename Name der zu erzeugenden Datei
 */
private void saveBigImage(BufferedImage image, String filename) throws IOException {
    int height = image.getHeight();
    int width = image.getWidth();

    int newWidth = bigWidth;
    int newHeight = new Double(((double) height / (double) width) * newWidth).intValue();

    if (bigHeight > -1 && newHeight > bigHeight) {
        newHeight = bigHeight;
        newWidth = new Double(((double) width / (double) height) * newHeight).intValue();
    }

    BufferedImage newImage = new BufferedImage(newWidth, newHeight, BufferedImage.TYPE_INT_RGB);
    newImage.getGraphics().drawImage(image.getScaledInstance(newWidth, newHeight, Image.SCALE_SMOOTH), 0, 0,
            null);

    imageSaver.save("big/", filename, newImage);

}

From source file:de.anycook.upload.UploadHandler.java

/**
 * speichert eine kleine Version des Bildes
 *
 * @param image    BufferedImage/*from ww w.  ja  v  a 2 s.c  om*/
 * @param filename Name der zu erzeugenden Datei
 */
private void saveSmallImage(BufferedImage image, String filename) throws IOException {
    int height = image.getHeight();
    int width = image.getWidth();
    double imageRatio = (double) width / (double) height;

    int xtranslate = 0;
    int ytranslate = 0;

    if (imageRatio > 1) {
        xtranslate = (width - height) / 2;
    } else {
        ytranslate = (height - width) / 2;
    }

    BufferedImage tempImage = image.getSubimage(xtranslate, ytranslate, width - xtranslate * 2,
            height - ytranslate * 2);
    BufferedImage newImage = new BufferedImage(smallSize, smallSize, BufferedImage.TYPE_INT_RGB);
    newImage.getGraphics().drawImage(tempImage.getScaledInstance(smallSize, smallSize, Image.SCALE_SMOOTH), 0,
            0, null);

    imageSaver.save("small/", filename, newImage);
}

From source file:org.jcurl.core.swing.WCComponent.java

private BufferedImage renderPng(final String watermark) {
    final BufferedImage img = new BufferedImage(getWidth(), getHeight(), BufferedImage.TYPE_INT_ARGB);
    final Graphics2D g2 = (Graphics2D) img.getGraphics();
    {/* w  w w  . j  a va  2 s .c  om*/
        final Map<Key, Object> hints = new HashMap<Key, Object>();
        hints.put(RenderingHints.KEY_ALPHA_INTERPOLATION, RenderingHints.VALUE_ALPHA_INTERPOLATION_QUALITY);
        hints.put(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
        hints.put(RenderingHints.KEY_COLOR_RENDERING, RenderingHints.VALUE_COLOR_RENDER_QUALITY);
        hints.put(RenderingHints.KEY_DITHERING, RenderingHints.VALUE_DITHER_ENABLE);
        hints.put(RenderingHints.KEY_FRACTIONALMETRICS, RenderingHints.VALUE_FRACTIONALMETRICS_ON);
        hints.put(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BICUBIC);
        hints.put(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_QUALITY);
        hints.put(RenderingHints.KEY_STROKE_CONTROL, RenderingHints.VALUE_STROKE_NORMALIZE);
        hints.put(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
        g2.addRenderingHints(hints);
    }
    final Font f0 = g2.getFont();
    paint(g2);
    g2.setTransform(new AffineTransform());
    if (watermark != null) {
        if (log.isDebugEnabled())
            log.debug(f0);
        g2.setFont(f0);
        g2.setColor(new Color(0, 0, 0, 128));
        g2.drawString(watermark, 10, 20);
    }
    g2.dispose();
    return img;
}