Example usage for java.awt.image BufferedImage createGraphics

Introduction

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

Prototype

public Graphics2D createGraphics() 

Source Link

Document

Creates a Graphics2D , which can be used to draw into this BufferedImage .

Usage

From source file:Utils.java

/** 
 * Renders multiple paragraphs of text in an array to an image (created and returned). 
 *
 * @param font The font to use/*from   ww w  .j  ava 2s.c  om*/
 * @param textColor The color of the text
 * @param text The message in an array of strings (one paragraph in each
 * @param width The width the text should be limited to
 * @return An image with the text rendered into it
 */
public static BufferedImage renderTextToImage(Font font, Color textColor, String text[], int width) {
    LinkedList<BufferedImage> images = new LinkedList<BufferedImage>();

    int totalHeight = 0;

    for (String paragraph : text) {
        BufferedImage paraImage = renderTextToImage(font, textColor, paragraph, width);
        totalHeight += paraImage.getHeight();
        images.add(paraImage);
    }

    BufferedImage image = createCompatibleImage(width, totalHeight);
    Graphics2D graphics = (Graphics2D) image.createGraphics();

    int y = 0;

    for (BufferedImage paraImage : images) {
        graphics.drawImage(paraImage, 0, y, null);
        y += paraImage.getHeight();
    }

    graphics.dispose();
    return image;
}

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From source file:tourma.utils.web.WebStatistics.java

/**
 * /* www. j a  v a  2s . c o m*/
 */
public static String getHTML() {
    StringBuffer stats = new StringBuffer("");

    JPNStatistics jpn = new JPNStatistics();
    jpn.setSize(640, 480);
    JTabbedPane jtp = jpn.getTabbedPane();
    for (int i = 0; i < jtp.getTabCount(); i++) {
        Component comp = jtp.getComponent(i);

        if (comp instanceof ChartPanel) {
            ChartPanel panel = (ChartPanel) comp;
            panel.setSize(640, 480);
            BufferedImage buf = new BufferedImage(640, 480, BufferedImage.TYPE_INT_ARGB);
            Graphics g = buf.createGraphics();
            panel.print(g);
            g.dispose();

            //BufferedImage buf = toBufferedImage(img, 640, 480);
            String img_str = WebPicture.getPictureAsHTML(buf, 640, 480, true);
            stats.append(img_str);
        }

        if (comp instanceof JPanel) {
            // Find JList, Select All then Find ChartPanel
            JPanel pane = (JPanel) comp;
            ChartPanel panel = null;
            JList list = null;
            for (int j = 0; j < pane.getComponentCount(); j++) {
                Component c = pane.getComponent(j);
                if (c instanceof JScrollPane) {
                    for (int k = 0; k < ((JScrollPane) c).getViewport().getComponentCount(); k++) {
                        Component c2 = ((JScrollPane) c).getViewport().getComponent(k);
                        if (c2 instanceof JList) {
                            list = (JList) c2;
                        }

                    }
                }
            }

            if (list != null) {

                int start = 0;
                int end = list.getModel().getSize() - 1;
                if (end >= 0) {
                    list.setSelectionInterval(start, end);
                }

                jpn.updatePositions();
            }
            for (int j = 0; j < pane.getComponentCount(); j++) {
                Component c = pane.getComponent(j);
                if (c instanceof ChartPanel) {
                    panel = (ChartPanel) c;
                }
            }

            if (panel != null) {
                panel.setSize(640, 480);
                BufferedImage buf = new BufferedImage(640, 480, BufferedImage.TYPE_INT_ARGB);
                Graphics g = buf.createGraphics();
                panel.print(g);
                g.dispose();

                //BufferedImage buf = toBufferedImage(img, 640, 480);
                String img_str = WebPicture.getPictureAsHTML(buf, 640, 480, true);
                stats.append(img_str);
            }
        }
    }

    return stats.toString();
}

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From source file:com.ables.pix.utility.PictureOps.java

public static BufferedImage tilt(BufferedImage image, double rotation) {
    double sin = Math.abs(Math.sin(getAngle()));
    double cos = Math.abs(Math.cos(getAngle()));
    int w = image.getWidth(), h = image.getHeight();

    int neww = (int) Math.floor(w * cos + sin * h), newh = (int) Math.floor(h * cos + sin * w);
    GraphicsConfiguration gc = getDefaultConfiguration();
    BufferedImage rotated = gc.createCompatibleImage(neww, newh);
    Graphics2D g = rotated.createGraphics();
    g.translate((neww - w) / 2, (newh - h / 2));
    g.rotate(getAngle(), w / 2, h / 2);//ww  w.j  a  v a  2 s.c o  m
    g.drawRenderedImage(image, null);
    g.dispose();
    return rotated;
}

---

From source file:org.web4thejob.web.util.MediaUtil.java

public static BufferedImage createThumbnail(byte[] bytes) {
    Image image = getImage(bytes);
    BufferedImage bufferedImage = new BufferedImage(image.getWidth(), image.getHeight(),
            BufferedImage.TYPE_INT_ARGB);
    Graphics2D g = bufferedImage.createGraphics();
    g.drawImage(image.toImageIcon().getImage(), 0, 0, null);
    g.dispose();//from   w w  w.  jav a  2 s .co  m
    return createThumbnail(bufferedImage);
}

---

From source file:net.chris54721.infinitycubed.utils.Utils.java

public static BufferedImage toBufferedImage(Image img) {
    if (img instanceof BufferedImage)
        return (BufferedImage) img;
    BufferedImage bimage = new BufferedImage(img.getWidth(null), img.getHeight(null),
            BufferedImage.TYPE_INT_ARGB);
    Graphics2D bGr = bimage.createGraphics();
    bGr.drawImage(img, 0, 0, null);/*from w  w w . jav a 2  s.  c  om*/
    bGr.dispose();
    return bimage;
}

---

From source file:Main.java

public static BufferedImage getFlippedImage(BufferedImage bi) {
    BufferedImage flipped = new BufferedImage(bi.getWidth(), bi.getHeight(), bi.getType());
    AffineTransform tran = AffineTransform.getTranslateInstance(0, bi.getHeight());
    AffineTransform flip = AffineTransform.getScaleInstance(1d, -1d);
    tran.concatenate(flip);//from   w ww.  ja  v  a  2  s. c  o  m

    Graphics2D g = flipped.createGraphics();
    g.setTransform(tran);
    g.drawImage(bi, 0, 0, null);
    g.dispose();

    return flipped;
}

---

From source file:ar.com.zauber.common.image.impl.AbstractImage.java

/**
 * Creates a thumbnail//  w  w  w.j  a  v  a  2 s  . c om
 * 
 * @param is data source
 * @param os data source
 * @throws IOException if there is a problem reading is
 */
public static void createThumbnail(final InputStream is, final OutputStream os, final int target)
        throws IOException {
    final float compression = 0.85F;
    ImageWriter writer = null;
    MemoryCacheImageOutputStream mos = null;
    Graphics2D graphics2D = null;
    try {
        final BufferedImage bi = ImageIO.read(is);
        final Iterator<ImageWriter> iter = ImageIO.getImageWritersByFormatName("JPG");
        if (!iter.hasNext()) {
            throw new IllegalStateException("can't find JPG subsystem");
        }

        int w = bi.getWidth(), h = bi.getHeight();
        if (w < target && h < target) {
            // nothing to recalculate, ya es chiquita.
        } else {
            if (w > h) {
                h = target * bi.getHeight() / bi.getWidth();
                w = target;
            } else {
                w = target * bi.getWidth() / bi.getHeight();
                h = target;
            }
        }
        // draw original image to thumbnail image object and
        // scale it to the new size on-the-fly
        final BufferedImage thumbImage = new BufferedImage(w, h, BufferedImage.TYPE_INT_RGB);
        graphics2D = thumbImage.createGraphics();
        graphics2D.setRenderingHint(RenderingHints.KEY_INTERPOLATION,
                RenderingHints.VALUE_INTERPOLATION_BILINEAR);
        graphics2D.drawImage(bi, 0, 0, w, h, null);

        writer = (ImageWriter) iter.next();
        final ImageWriteParam iwp = writer.getDefaultWriteParam();
        iwp.setCompressionMode(ImageWriteParam.MODE_EXPLICIT);
        iwp.setCompressionQuality(compression);
        mos = new MemoryCacheImageOutputStream(os);
        writer.setOutput(mos);
        writer.write(null, new IIOImage(thumbImage, null, null), iwp);
    } finally {
        if (writer != null) {
            writer.dispose();
        }
        if (mos != null) {
            mos.close();
        }
        if (graphics2D != null) {
            graphics2D.dispose();
        }
        is.close();
        os.close();
    }
}

---

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.
 * /*from www.ja  v  a2s  .com*/
 * <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...");
}

---

From source file:com.partagames.imageresizetool.SimpleImageResizeTool.java

/**
 * Scales an image to the desired dimensions.
 *
 * @param img  Original image//from  www  .j ava 2s. c o  m
 * @param newW Target width
 * @param newH Target height
 * @return Scaled image
 */
public static BufferedImage scale(BufferedImage img, int newW, int newH) {
    int w = img.getWidth();
    int h = img.getHeight();
    final BufferedImage dimg = new BufferedImage(newW, newH, img.getType());
    final Graphics2D g = dimg.createGraphics();

    // use provided rendering hint, default is bilinear 
    switch (scalingHint) {
    case "n":
        g.setRenderingHint(RenderingHints.KEY_INTERPOLATION,
                RenderingHints.VALUE_INTERPOLATION_NEAREST_NEIGHBOR);
        break;
    case "b":
        g.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BILINEAR);
        break;
    }

    g.drawImage(img, 0, 0, newW, newH, 0, 0, w, h, null);
    g.dispose();
    return dimg;
}

---

From source file:net.mindengine.oculus.frontend.web.controllers.project.ProjectEditController.java

private static BufferedImage resize(BufferedImage image, int width, int height) {
    BufferedImage resizedImage = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);
    Graphics2D g = resizedImage.createGraphics();
    g.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BILINEAR);

    g.drawImage(image, 0, 0, width, height, null);
    g.dispose();/* w  ww. j a  v  a 2s  .  c o  m*/
    return resizedImage;
}

---

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