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.liud.dailynote.ThumbnailatorTest.java

public void testYS7() throws IOException {
    String result = "src/main/resources/images/";
    BufferedImage bi = new BufferedImage(100, 100, BufferedImage.TYPE_INT_RGB);
    Graphics2D g = bi.createGraphics();
    g.setColor(Color.LIGHT_GRAY);
    g.drawRect(0, 0, 10, 10);/*  w  w w  .  j  a v a 2  s . c om*/
    char[] data = "liudTest".toCharArray();
    g.drawChars(data, 0, data.length, 5, 32);

    // watermark ? 1.? 2.? 3.?
    Thumbnails.of(result + "sijili.jpg").scale(1.0f).watermark(Positions.CENTER, bi, 1.0f)
            .toFile(result + "image_warter_liud.jpg");
}

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From source file:com.alibaba.webx.tutorial.app1.module.screen.simple.SayHiImage.java

private void writeImage(OutputStream out) throws IOException {
    BufferedImage img = new BufferedImage(800, 600, BufferedImage.TYPE_INT_RGB);
    Graphics2D g2d = img.createGraphics();

    g2d.setPaint(Color.red);//from  w  w w  .  j a v  a  2  s.  com
    g2d.setFont(new Font("Serif", Font.BOLD, 36));
    g2d.drawString("Hi there, how are you doing today?", 5, g2d.getFontMetrics().getHeight());
    g2d.dispose();

    ImageIO.write(img, "jpg", out);
}

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From source file:$.SayHiImage.java

private void writeImage(OutputStream out) throws IOException {
        BufferedImage img = new BufferedImage(800, 600, BufferedImage.TYPE_INT_RGB);
        Graphics2D g2d = img.createGraphics();

        g2d.setPaint(Color.red);//from ww  w . j ava2 s  .  com
        g2d.setFont(new Font("Serif", Font.BOLD, 36));
        g2d.drawString("Hi there, how are you doing today?", 5, g2d.getFontMetrics().getHeight());
        g2d.dispose();

        ImageIO.write(img, "jpg", out);
    }

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From source file:controle.JfreeChartController.java

@PostConstruct
public void init() {
    try {/*  w w w  .  ja v  a2  s  .  c o m*/
        //Graphic Text
        BufferedImage bufferedImg = new BufferedImage(100, 25, BufferedImage.TYPE_INT_RGB);
        Graphics2D g2 = bufferedImg.createGraphics();
        g2.drawString("This is a text", 0, 10);
        ByteArrayOutputStream os = new ByteArrayOutputStream();
        ImageIO.write(bufferedImg, "png", os);
        graphicText = new DefaultStreamedContent(new ByteArrayInputStream(os.toByteArray()), "image/png");

        //Chart
        JFreeChart jfreechart = ChartFactory.createLineChart("cosseno", "X", "Y", createDataset());
        File chartFile = new File("dynamichart");
        ChartUtilities.saveChartAsPNG(chartFile, jfreechart, 800, 400);
        chart = new DefaultStreamedContent(new FileInputStream(chartFile), "image/png");
    } catch (Exception e) {
        e.printStackTrace();
    }
}

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From source file:ChartServlet.java

/** Draw a Graphical Chart in response to a user request */
public void doGet(HttpServletRequest request, HttpServletResponse response) throws IOException {

    response.setContentType("image/jpeg");

    // Create an Image
    BufferedImage img = new BufferedImage(W, H, BufferedImage.TYPE_INT_RGB);

    // Get the Image's Graphics, and draw.
    Graphics2D g = img.createGraphics();

    // In real life this would call some charting software...
    g.setColor(Color.white);//from   ww  w.j ava2s .  co  m
    g.fillRect(0, 0, W, H);
    g.setColor(Color.green);
    g.fillOval(100, 75, 50, 50);

    // Write the output
    OutputStream os = response.getOutputStream();
    ImageOutputStream ios = ImageIO.createImageOutputStream(os);

    if (!ImageIO.write(img, "jpeg", ios)) {
        log("Boo hoo, failed to write JPEG");
    }
    ios.close();
    os.close();
}

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From source file:org.primefaces.showcase.view.multimedia.GraphicImageView.java

@PostConstruct
public void init() {
    try {//ww w. j  av a2s  .  c o m
        //Graphic Text
        BufferedImage bufferedImg = new BufferedImage(100, 25, BufferedImage.TYPE_INT_RGB);
        Graphics2D g2 = bufferedImg.createGraphics();
        g2.drawString("This is a text", 0, 10);
        ByteArrayOutputStream os = new ByteArrayOutputStream();
        ImageIO.write(bufferedImg, "png", os);
        graphicText = new DefaultStreamedContent(new ByteArrayInputStream(os.toByteArray()), "image/png");

        //Chart
        JFreeChart jfreechart = ChartFactory.createPieChart("Cities", createDataset(), true, true, false);
        File chartFile = new File("dynamichart");
        ChartUtilities.saveChartAsPNG(chartFile, jfreechart, 375, 300);
        chart = new DefaultStreamedContent(new FileInputStream(chartFile), "image/png");
    } catch (Exception e) {
        e.printStackTrace();
    }
}

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From source file:net.pkhsolutions.pecsapp.control.PictureTransformer.java

/**
 * TODO Document me//from  w w w.  j av a 2s  .  c o  m
 *
 * @param image
 * @param maxHeightInPx
 * @param maxWidthInPx
 * @return
 */
@NotNull
public BufferedImage scaleIfNecessary(@NotNull BufferedImage image, int maxHeightInPx, int maxWidthInPx) {
    int w = image.getWidth();
    int h = image.getHeight();

    int newW;
    int newH;

    if (w <= maxWidthInPx && h <= maxHeightInPx) {
        return image;
    } else if (w > h) {
        newW = maxWidthInPx;
        newH = newW * h / w;
    } else {
        newH = maxHeightInPx;
        newW = newH * w / h;
    }
    LOGGER.info("Original size was w{} x h{}, new size is w{} x h{}", w, h, newW, newH);
    Image tmp = image.getScaledInstance(newW, newH, Image.SCALE_SMOOTH);
    BufferedImage img = new BufferedImage(newW, newH, image.getType());
    Graphics2D g2d = img.createGraphics();
    g2d.drawImage(tmp, 0, 0, null);
    g2d.dispose();
    return img;
}

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From source file:AntiAlias.java

/** Draw the example */
public void paint(Graphics g1) {
    Graphics2D g = (Graphics2D) g1;
    BufferedImage image = // Create an off-screen image
            new BufferedImage(65, 35, BufferedImage.TYPE_INT_RGB);
    Graphics2D ig = image.createGraphics(); // Get its Graphics for drawing

    // Set the background to a gradient fill. The varying color of
    // the background helps to demonstrate the anti-aliasing effect
    ig.setPaint(new GradientPaint(0, 0, Color.black, 65, 35, Color.white));
    ig.fillRect(0, 0, 65, 35);//www .j  av a  2s.  co m

    // Set drawing attributes for the foreground.
    // Most importantly, turn on anti-aliasing.
    ig.setStroke(new BasicStroke(2.0f)); // 2-pixel lines
    ig.setFont(new Font("Serif", Font.BOLD, 18)); // 18-point font
    ig.setRenderingHint(RenderingHints.KEY_ANTIALIASING, // Anti-alias!
            RenderingHints.VALUE_ANTIALIAS_ON);

    // Now draw pure blue text and a pure red oval
    ig.setColor(Color.blue);
    ig.drawString("Java", 9, 22);
    ig.setColor(Color.red);
    ig.drawOval(1, 1, 62, 32);

    // Finally, scale the image by a factor of 10 and display it
    // in the window. This will allow us to see the anti-aliased pixels
    g.drawImage(image, AffineTransform.getScaleInstance(10, 10), this);

    // Draw the image one more time at its original size, for comparison
    g.drawImage(image, 0, 0, this);
}

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From source file:edu.cudenver.bios.chartsvc.representation.LegendImageRepresentation.java

/**
 * Called internally by Restlet library to write the image as the HTTP
 * response./*from w  w  w  . ja v  a2s  .  c o  m*/
 * @param out output stream
 */
@Override
public void write(OutputStream out) throws IOException {
    // build the legend from the plot, and write it to a jpeg image
    if (plot != null) {
        LegendTitle legend = new LegendTitle(plot, new ColumnArrangement(), new ColumnArrangement());
        legend.setFrame(BlockBorder.NONE);
        //legend.setMargin(new RectangleInsets(2.0, 2.0, 2.0, 2.0));
        legend.setBackgroundPaint(Color.white);
        legend.setPosition(RectangleEdge.BOTTOM);
        BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
        Graphics2D g = image.createGraphics();
        Rectangle2D.Double legendArea = new Rectangle2D.Double(0, 0, width, height);
        g.clip(legendArea);
        legend.arrange(g, new RectangleConstraint(width, height));
        legend.draw(g, legendArea);
        g.dispose();
        EncoderUtil.writeBufferedImage(image, ImageFormat.JPEG, out);
    }
}

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From source file:D20140128.ApacheXMLGraphicsTest.TilingPatternExample.java

private void generatePNGusingJava2D(File outputFile) throws IOException {
    BufferedImage image = new BufferedImage(400, 200, BufferedImage.TYPE_INT_ARGB);
    Graphics2D g2d = image.createGraphics();
    paintTileAlone(g2d);/*from   w  ww  .j a v a2  s.c  o  m*/
    paintShapes(g2d);
    paintText(g2d);
    g2d.dispose();

    ImageWriterUtil.saveAsPNG(image, outputFile);
}

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