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:com.formkiq.core.service.conversion.PdfToPngFormatConverter.java

/**
 * Merge Buffered Images together./*from  ww w  .j  ava 2 s .  c o  m*/
 * @param buffImages {@link BufferedImage}
 * @return {@link ConversionResult}
 * @throws IOException IOException
 */
private ConversionResult merge(final BufferedImage[] buffImages) throws IOException {

    ConversionResult result = new ConversionResult();

    int cols = 1;
    int rows = buffImages.length;

    int type = buffImages[0].getType();
    int width = buffImages[0].getWidth();
    int height = buffImages[0].getHeight();

    BufferedImage bi = new BufferedImage(width * cols, height * rows, type);

    int num = 0;
    for (int i = 0; i < rows; i++) {
        for (int j = 0; j < cols; j++) {
            bi.createGraphics().drawImage(buffImages[num], width * j, height * i, null);
            num++;
        }
    }

    ByteArrayOutputStream os = new ByteArrayOutputStream();
    try {
        ImageIO.write(bi, "png", os);
    } finally {
        os.close();
    }

    result.setDatawidth(width * cols);
    result.setDataheight(height * rows);
    result.setData(os.toByteArray());
    return result;
}

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From source file:ImageDuplicity.java

private void createOffscreenImage() {
    Dimension d = getSize();//from   ww w.j  a v a 2s  . c om
    int width = d.width;
    int height = d.height;
    image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);

    Graphics2D g2 = image.createGraphics();
    g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);

    try {
        String filename = "largeJava2sLogo.jpg";
        InputStream in = getClass().getResourceAsStream(filename);
        JPEGImageDecoder decoder = JPEGCodec.createJPEGDecoder(in);
        BufferedImage image = decoder.decodeAsBufferedImage();
        in.close();
        g2.drawImage(image, 0, 0, width, height, null);
    } catch (Exception e) {
        System.out.print(e);
    }

    g2.setStroke(new BasicStroke(2));
    Color[] colors = { Color.red, Color.blue, Color.green };
    for (int i = -32; i < 40; i += 8) {
        g2.setPaint(colors[Math.abs(i) % 3]);
        g2.drawOval(i, i, width - i * 2, height - i * 2);
    }
}

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From source file:com.skcraft.launcher.swing.InstanceTableModel.java

private ImageIcon buildDownloadIcon(BufferedImage instanceIcon) {
    try {//from  w  w w. j ava2 s  . co  m
        BufferedImage iconBg = instanceIcon;
        BufferedImage iconFg = ImageIO.read(Launcher.class.getResource("download_icon_overlay.png"));
        BufferedImage iconCombined = new BufferedImage(iconBg.getWidth(), iconBg.getHeight(),
                BufferedImage.TYPE_INT_ARGB);
        Graphics2D canvas = iconCombined.createGraphics();
        canvas.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER, 0.5f));
        canvas.drawImage(iconBg, 0, 0, null);
        canvas.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER, 1.0f));
        canvas.drawImage(iconFg, iconBg.getWidth() - iconFg.getWidth(), iconBg.getHeight() - iconFg.getHeight(),
                null);
        canvas.dispose();
        return new ImageIcon(iconCombined);
    } catch (IOException e) {
        e.printStackTrace();
    }
    return null;
}

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From source file:com.krawler.esp.handlers.genericFileUpload.java

private BufferedImage toBufferedImage(Image image) {
    image = new ImageIcon(image).getImage();
    BufferedImage bufferedImage = new BufferedImage(image.getWidth(null), image.getHeight(null),
            BufferedImage.TYPE_INT_RGB);
    Graphics g = bufferedImage.createGraphics();
    g.setColor(Color.white);/*from  w  ww.  j a va 2s.  c  o  m*/
    g.fillRect(0, 0, image.getWidth(null), image.getHeight(null));
    g.drawImage(image, 0, 0, null);
    g.dispose();

    return bufferedImage;
}

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From source file:image.writer.ImageWriterExample1.java

/**
 * Creates a bitmap file. We paint a few things on a bitmap and then save the bitmap using
 * an ImageWriter.//from ww w.j  av a2 s. c o m
 * @param outputFile the target file
 * @param format the target format (a MIME type, ex. "image/png")
 * @throws IOException In case of an I/O error
 */
public void generateBitmapUsingJava2D(File outputFile, String format) throws IOException {
    //String compression = "CCITT T.6";
    String compression = "PackBits";
    boolean monochrome = compression.startsWith("CCITT"); //CCITT is for 1bit b/w only

    BufferedImage bimg;
    if (monochrome) {
        bimg = new BufferedImage(400, 200, BufferedImage.TYPE_BYTE_BINARY);
    } else {
        bimg = new BufferedImage(400, 200, BufferedImage.TYPE_INT_RGB);
    }

    Graphics2D g2d = bimg.createGraphics();
    g2d.setBackground(Color.white);
    g2d.clearRect(0, 0, 400, 200);
    g2d.setColor(Color.black);

    //Paint something
    paintSome(g2d, 1);

    OutputStream out = new java.io.FileOutputStream(outputFile);
    out = new java.io.BufferedOutputStream(out);
    try {

        ImageWriter writer = ImageWriterRegistry.getInstance().getWriterFor(format);
        ImageWriterParams params = new ImageWriterParams();
        params.setCompressionMethod(compression);
        params.setResolution(72);
        writer.writeImage(bimg, out, params);

    } finally {
        IOUtils.closeQuietly(out);
    }
}

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From source file:MainClass.java

public void paint(Graphics g) {
    BufferedImage bim;

    TexturePaint tp;/*from   w  ww.ja  v  a 2  s .  c  o m*/

    String mesg = "www.java2s.com";

    Font myFont = new Font("Lucida Regular", Font.BOLD, 72);

    Color[] colors = { Color.red, Color.blue, Color.yellow, };

    int width = 8, height = 8;
    bim = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);
    Graphics2D g2 = bim.createGraphics();
    for (int i = 0; i < width; i++) {
        g2.setPaint(colors[(i / 2) % colors.length]);
        g2.drawLine(0, i, i, 0);
        g2.drawLine(width - i, height, width, height - i);
    }
    Rectangle r = new Rectangle(0, 0, bim.getWidth(), bim.getHeight());
    tp = new TexturePaint(bim, r);

    Graphics2D g2d = (Graphics2D) g;
    g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
    g2d.setPaint(tp);
    g2d.setFont(myFont);
    g2d.drawString(mesg, 20, 100);
}

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From source file:com.tur0kk.facebook.FacebookClient.java

public String publishPicture(String msg, Image image, String placeId) throws IOException {
    OAuthRequest request = new OAuthRequest(Verb.POST, "https://graph.facebook.com/v2.2/me/photos"); // request node
    request.addHeader("Authorization", "Bearer " + accesTokenString); // authentificate

    // check input to avoid error responses
    if (msg != null && image != null) {
        // facebook requires multipart post structure
        MultipartEntityBuilder builder = MultipartEntityBuilder.create();
        builder.addTextBody("message", msg); // description

        if (placeId != null && !"".equals(placeId)) {
            builder.addTextBody("place", placeId); // add link to FabLab site if property is set in preferences
        }//from w w  w . j  av  a2s.c o m

        // convert image to bytearray and append to multipart
        BufferedImage bimage = new BufferedImage(image.getWidth(null), image.getHeight(null),
                BufferedImage.TYPE_INT_ARGB);
        Graphics2D bGr = bimage.createGraphics();
        bGr.drawImage(image, 0, 0, null);
        bGr.dispose();
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        ImageIO.write(bimage, "png", baos);
        builder.addBinaryBody(msg, baos.toByteArray(), ContentType.MULTIPART_FORM_DATA, "test.png");

        // generate multipart byte stream and add to payload of post package
        HttpEntity multipart = builder.build();
        ByteArrayOutputStream multipartOutStream = new ByteArrayOutputStream(
                (int) multipart.getContentLength());
        multipart.writeTo(multipartOutStream);
        request.addPayload(multipartOutStream.toByteArray());

        // set header of post package
        Header contentType = multipart.getContentType();
        request.addHeader(contentType.getName(), contentType.getValue());

        // send and response answer
        Response response = request.send();
        return response.getBody();
    } else {
        throw new RuntimeException("message and image needed");
    }
}

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From source file:ddf.catalog.transformer.input.pptx.PptxInputTransformer.java

/**
 * If the slide show doesn't contain any slides, then return null. Otherwise, return jpeg
 * image data of the first slide in the deck.
 *
 * @param slideShow/*ww w. j  a v  a 2  s .  c om*/
 * @return jpeg thumbnail or null if thumbnail can't be created
 * @throws IOException
 */
private byte[] generatePptxThumbnail(XMLSlideShow slideShow) throws IOException {

    if (slideShow.getSlides().isEmpty()) {
        LOGGER.info("the powerpoint file does not contain any slides, skipping thumbnail generation");
        return null;
    }

    Dimension pgsize = slideShow.getPageSize();

    int largestDimension = (int) Math.max(pgsize.getHeight(), pgsize.getWidth());
    float scalingFactor = IMAGE_HEIGHTWIDTH / largestDimension;
    int scaledHeight = (int) (pgsize.getHeight() * scalingFactor);
    int scaledWidth = (int) (pgsize.getWidth() * scalingFactor);
    BufferedImage img = new BufferedImage(scaledWidth, scaledHeight, BufferedImage.TYPE_INT_RGB);

    Graphics2D graphics = img.createGraphics();

    try {
        graphics.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
        graphics.setRenderingHint(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_QUALITY);
        graphics.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BICUBIC);
        graphics.setRenderingHint(RenderingHints.KEY_FRACTIONALMETRICS,
                RenderingHints.VALUE_FRACTIONALMETRICS_ON);

        graphics.scale(scalingFactor, scalingFactor);

        slideShow.getSlides().get(0).draw(graphics);

        try (ByteArrayOutputStream outputStream = new ByteArrayOutputStream()) {
            ImageIOUtil.writeImage(img, FORMAT_NAME, outputStream, RESOLUTION_DPI, IMAGE_QUALITY);
            return outputStream.toByteArray();
        }
    } catch (RuntimeException e) {
        if (e.getCause() instanceof javax.imageio.IIOException) {
            LOGGER.warn("unable to generate thumbnail for PPTX file", e);
        } else {
            throw e;
        }
    } finally {
        graphics.dispose();
    }

    return null;
}

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From source file:Main.java

public void paint(Graphics g) {
    BufferedImage bim;

    TexturePaint tp;//from ww w  .  j  a v a2 s .  com

    String mesg = "www.java2s.com";

    Font myFont = new Font("Lucida Regular", Font.BOLD, 72);

    Color[] colors = { Color.red, Color.blue, Color.yellow, };

    int width = 8, height = 8;
    bim = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);
    Graphics2D g2 = bim.createGraphics();
    for (int i = 0; i < width; i++) {
        g2.setPaint(colors[(i / 2) % colors.length]);
        g2.drawLine(0, i, i, 0);
        g2.drawLine(width - i, height, width, height - i);
    }
    Rectangle r = new Rectangle(0, 0, bim.getWidth(), bim.getHeight());
    tp = new TexturePaint(bim, r);
    System.out.println(tp.getAnchorRect());

    Graphics2D g2d = (Graphics2D) g;
    g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
    g2d.setPaint(tp);
    g2d.setFont(myFont);
    g2d.drawString(mesg, 20, 100);
}

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From source file:Main.java

public void paint(Graphics g) {
    BufferedImage bim;

    TexturePaint tp;/*ww w. j  av  a  2 s .  c om*/

    String mesg = "www.java2s.com";

    Font myFont = new Font("Lucida Regular", Font.BOLD, 72);

    Color[] colors = { Color.red, Color.blue, Color.yellow, };

    int width = 8, height = 8;
    bim = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);
    Graphics2D g2 = bim.createGraphics();
    for (int i = 0; i < width; i++) {
        g2.setPaint(colors[(i / 2) % colors.length]);
        g2.drawLine(0, i, i, 0);
        g2.drawLine(width - i, height, width, height - i);
    }
    Rectangle r = new Rectangle(0, 0, bim.getWidth(), bim.getHeight());
    tp = new TexturePaint(bim, r);
    System.out.println(tp.getImage());

    Graphics2D g2d = (Graphics2D) g;
    g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
    g2d.setPaint(tp);
    g2d.setFont(myFont);
    g2d.drawString(mesg, 20, 100);
}

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