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:org.chos.transaction.passport.controller.CaptchaController.java

@RequestMapping(value = "/captcha")
public void captcha(HttpServletRequest request, HttpServletResponse response) throws IOException {
    BufferedImage bi = new BufferedImage(40, 18, BufferedImage.TYPE_INT_RGB);
    Graphics g = bi.getGraphics();
    String c = generate();/* ww w. j  a v  a  2 s . co m*/
    g.setColor(Color.white);
    g.fillRect(1, 1, 38, 16);

    g.setColor(generateColor());
    g.drawString(c, 4, 13);
    response.setContentType("image/jpeg");
    ServletOutputStream os = response.getOutputStream();
    //      os.write(b)
    //      ImageIO.createImageOutputStream(os);
    ImageIO.write(bi, "jpg", os);
    os.flush();
    os.close();
    request.getSession().setAttribute("captcha", c);
}

From source file:com.lcw.one.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  ava 2s.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();

}

From source file:org.jcurl.demo.tactics.JCurlShotPlanner.java

private static void renderPng(final Container src, final File dst) throws IOException {
    final BufferedImage img = new BufferedImage(src.getWidth(), src.getHeight(), BufferedImage.TYPE_INT_ARGB);
    final Graphics g = img.getGraphics();
    try {//from  ww  w  . j a va 2  s .  c o  m
        // SwingUtilities.paintComponent(g, src, src.getBounds(), null);
        src.paintAll(g);
    } finally {
        g.dispose();
    }
    ImageIO.write(img, "png", dst);
}

From source file:ImageFlip.java

public void paint(Graphics g) {
    Image myImage = new ImageIcon("yourImage.jpg").getImage();
    BufferedImage bufferedImage = new BufferedImage(myImage.getWidth(null), myImage.getHeight(null),
            BufferedImage.TYPE_INT_RGB);
    Graphics2D g2d = (Graphics2D) g;

    Graphics gb = bufferedImage.getGraphics();
    gb.drawImage(myImage, 0, 0, null);/*from   w  w w. j a v a 2 s . com*/
    gb.dispose();

    AffineTransform tx = AffineTransform.getScaleInstance(-1, 1);
    tx.translate(-myImage.getWidth(null), 0);
    AffineTransformOp op = new AffineTransformOp(tx, AffineTransformOp.TYPE_NEAREST_NEIGHBOR);
    bufferedImage = op.filter(bufferedImage, null);

    g2d.drawImage(myImage, 10, 10, null);
    g2d.drawImage(bufferedImage, null, 300, 10);
}

From source file:DataBufferGrabber.java

protected void paintComponent(Graphics g) {
    // create an image
    BufferedImage bImg = new BufferedImage(SWATCH_SIZE, SWATCH_SIZE, BufferedImage.TYPE_INT_RGB);
    Graphics gImage = bImg.getGraphics();
    gImage.setColor(Color.WHITE);
    gImage.fillRect(0, 0, SWATCH_SIZE, SWATCH_SIZE);

    // Time how long it takes to copy the managed version
    long managedTime = copyImage(g, bImg, 0, 0);
    System.out.println("Managed: " + managedTime + " ms");

    // Now grab the pixel array, change the colors, re-run the test
    Raster raster = bImg.getRaster();
    DataBufferInt dataBuffer = (DataBufferInt) raster.getDataBuffer();
    int pixels[] = dataBuffer.getData();
    for (int i = 0; i < pixels.length; ++i) {
        // Make all pixels black
        pixels[i] = 0;/*from   w w w .  j a v a2  s .co m*/
    }

    // Time this un-managed copy
    long unmanagedTime = copyImage(g, bImg, SWATCH_SIZE, 0);
    System.out.println("Unmanaged: " + unmanagedTime + " ms");
}

From source file:com.codenvy.corp.MainPage.java

private void addText(File file, String burnDownInfo) throws IOException {
    BufferedImage image = ImageIO.read(file);
    Graphics g = image.getGraphics();
    g.setColor(Color.RED);/*  ww  w.ja v  a 2 s . c om*/
    g.setFont(g.getFont().deriveFont(30f));
    g.drawString(burnDownInfo, 550, 45);
    g.dispose();
    ImageIO.write(image, "png", file);
}

From source file:com.lixiaocong.service.ImageCodeService.java

public BufferedImage getImage(HttpSession session) {
    //background/*from ww w .  ja v a2s.  c  om*/
    BufferedImage bi = new BufferedImage(WIDTH, HEIGHT, BufferedImage.TYPE_INT_RGB);
    Graphics graphics = bi.getGraphics();
    graphics.setColor(randomColor());
    graphics.fillRect(0, 0, WIDTH, HEIGHT);

    //content
    StringBuilder sb = new StringBuilder();
    int len = ch.length;
    Random random = new Random();
    for (int i = 0; i < 4; i++) {
        int index = random.nextInt(len);
        graphics.setColor(randomColor());
        graphics.setFont(new Font(null, Font.BOLD + Font.ITALIC, 30));
        graphics.drawString(ch[index] + "", i * 15 + 5, 25);
        sb.append(ch[index]);
    }
    session.setAttribute("imagecode", sb.toString());

    //lines
    for (int i = 0; i < 4; i++) {
        graphics.setColor(randomColor());
        graphics.drawLine(random.nextInt(WIDTH), random.nextInt(HEIGHT), random.nextInt(WIDTH),
                random.nextInt(HEIGHT));
    }

    return bi;
}

From source file:probe.com.model.util.SwingToImageGenerator.java

public String generateHeatMap(JComponent component) {

    BufferedImage heatMapImg = new BufferedImage((component.getWidth()), (component.getHeight()),
            BufferedImage.TYPE_INT_ARGB);
    Graphics g = heatMapImg.getGraphics();
    component.paint(g);//  w  ww .  java  2  s . co m
    return generateEncodedImg(heatMapImg);
}

From source file:org.kurento.test.latency.ChartWriter.java

public void drawChart(String filename, int width, int height) throws IOException {
    // Create plot
    NumberAxis xAxis = new NumberAxis(xAxisLabel);
    NumberAxis yAxis = new NumberAxis(yAxisLabel);
    XYSplineRenderer renderer = new XYSplineRenderer();
    XYPlot plot = new XYPlot(dataset, xAxis, yAxis, renderer);
    plot.setBackgroundPaint(Color.lightGray);
    plot.setDomainGridlinePaint(Color.white);
    plot.setRangeGridlinePaint(Color.white);
    plot.setAxisOffset(new RectangleInsets(4, 4, 4, 4));

    // Create chart
    JFreeChart chart = new JFreeChart(chartTitle, JFreeChart.DEFAULT_TITLE_FONT, plot, true);
    ChartUtilities.applyCurrentTheme(chart);
    ChartPanel chartPanel = new ChartPanel(chart, false);

    // Draw png/*from  ww  w  .j  av a  2  s.  co m*/
    BufferedImage bi = new BufferedImage(width, height, BufferedImage.TYPE_INT_BGR);
    Graphics graphics = bi.getGraphics();
    chartPanel.setBounds(0, 0, width, height);
    chartPanel.paint(graphics);
    ImageIO.write(bi, "png", new File(filename));
}

From source file:com.foudroyantfactotum.mod.fousarchive.midi.generation.MidiImageGeneration.java

public ImmutablePair<String, BufferedImage> buildImage() throws InterruptedException, ExecutionException {
    final Future<String> name = pool.submit(new LineProcessor(imgX));
    final BufferedImage mdbf = new BufferedImage(imgX, imgY, BufferedImage.TYPE_BYTE_GRAY);
    final Graphics g = mdbf.getGraphics();

    g.setColor(Color.BLACK);//from  ww w.j  a va 2s  .  c  o m
    g.fillRect(0, 0, imgX, imgY);
    g.setColor(Color.WHITE);

    for (Line l = lines.take(); l != TERMINATE; l = lines.take()) {
        g.drawLine(l.note, (int) Math.round(l.tickStart * imgY), l.note, (int) Math.round(l.tickEnd * imgY));
    }

    pool.shutdown();

    g.dispose();

    return ImmutablePair.of(name.get(), mdbf);
}