Example usage for java.awt.image BufferedImage createGraphics

List of usage examples for java.awt.image BufferedImage createGraphics

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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:Main.java

public static void main(String[] args) throws IOException {
    BufferedImage large = ImageIO.read(new File("images/a.jpg"));
    BufferedImage small = ImageIO.read(new File("images/b.jpg"));

    int w = large.getWidth();
    int h = large.getHeight();
    int type = BufferedImage.TYPE_INT_RGB;

    BufferedImage image = new BufferedImage(w, h, type);
    Graphics2D g2 = image.createGraphics();
    g2.drawImage(large, 0, 0, null);/*from w  ww .j  a  v a 2s .co  m*/
    g2.drawImage(small, 10, 10, null);
    g2.dispose();
    ImageIO.write(image, "jpg", new File("new.jpg"));

    JOptionPane.showMessageDialog(null, new ImageIcon(image), "", JOptionPane.PLAIN_MESSAGE);
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    BufferedImage bsrc = ImageIO.read(new File("a.jpg"));
    BufferedImage bdest = new BufferedImage(100, 100, BufferedImage.TYPE_INT_RGB);
    Graphics2D g = bdest.createGraphics();
    AffineTransform at = AffineTransform.getScaleInstance(2, 2);
    g.drawRenderedImage(bsrc, at);// www .  j a  v  a  2 s .co  m
    ImageIO.write(bdest, "JPG", new File("b.jpg"));
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    ImageIcon ii = new ImageIcon("C:/Java_Dev/test.jpg");
    BufferedImage bi = new BufferedImage(50, 50, BufferedImage.TYPE_INT_RGB);
    Graphics2D g2d = (Graphics2D) bi.createGraphics();
    g2d.addRenderingHints(/* w  w  w .  ja va2  s.  c o m*/
            new RenderingHints(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_QUALITY));
    boolean b = g2d.drawImage(ii.getImage(), 0, 0, 50, 50, null);
    System.out.println(b);
    ImageIO.write(bi, "jpg", new File("C:/Java_Dev/test.jpg"));
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    int size = 120;
    int pad = 10;
    BufferedImage bi = new BufferedImage(size, size, BufferedImage.TYPE_INT_RGB);
    Graphics g = bi.createGraphics();
    g.setColor(Color.WHITE);//from   www. j  a v a2 s.  c  om
    g.fillRect(0, 0, size, size);
    g.setColor(Color.YELLOW);
    g.fillOval(pad, pad, size - (2 * pad), size - (2 * pad));
    g.dispose();

    BufferedImage image2 = new BufferedImage(bi.getWidth(), bi.getHeight(), BufferedImage.TYPE_BYTE_GRAY);

    ColorConvertOp op = new ColorConvertOp(bi.getColorModel().getColorSpace(),
            image2.getColorModel().getColorSpace(), null);
    op.filter(bi, image2);
    ImageIO.write(image2, "png", new File("c:/Java_Dev/image2.png"));
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    BufferedImage bufferedImage = ImageIO.read(new File("a.jpg"));
    BufferedImage destinationBufferedImage = new BufferedImage(100, 100, BufferedImage.TYPE_INT_RGB);
    Graphics2D g = destinationBufferedImage.createGraphics();
    AffineTransform at = AffineTransform.getScaleInstance(2, 2);
    g.drawRenderedImage(bufferedImage, at);
    ImageIO.write(destinationBufferedImage, "JPG", new File("b.jpg"));
}

From source file:Main.java

static public void main(String args[]) throws Exception {
    int width = 200, height = 200;
    BufferedImage bi = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);

    Graphics2D ig2 = bi.createGraphics();
    ig2.fillRect(0, 0, width - 1, height - 1);

    Iterator imageWriters = ImageIO.getImageWritersByFormatName("GIF");
    ImageWriter imageWriter = (ImageWriter) imageWriters.next();
    File file = new File("filename.gif");
    ImageOutputStream ios = ImageIO.createImageOutputStream(file);
    imageWriter.setOutput(ios);//from   w  w  w .  ja  va  2 s . com
    imageWriter.write(bi);
}

From source file:Main.java

static public void main(String args[]) throws Exception {
    int width = 200, height = 200;
    BufferedImage bi = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);

    Graphics2D ig2 = bi.createGraphics();
    ig2.fillRect(0, 0, width - 1, height - 1);

    BasicStroke stroke = new BasicStroke(10, BasicStroke.CAP_ROUND, BasicStroke.JOIN_ROUND);
    ig2.setPaint(Color.lightGray);
    ig2.setStroke(stroke);// w  w w.  ja va 2s.c  o  m
    ig2.draw(new Ellipse2D.Double(0, 0, 100, 100));

    ImageIO.write(bi, "GIF", new File("a.gif"));
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    BufferedImage bi = new BufferedImage(100, 100, BufferedImage.TYPE_USHORT_GRAY);
    Graphics2D g2d = bi.createGraphics();
    g2d.setColor(Color.WHITE);//from   w  ww.j  a v a 2 s .  c o m
    g2d.fillRect(0, 0, 100, 100);
    g2d.setColor(new Color(255, 123, 0));

    g2d.drawLine(100, 100, 1, 1);

    g2d.dispose();
    BufferedImage scaledImage = new BufferedImage(1000, 1000, BufferedImage.TYPE_USHORT_GRAY);

    Graphics2D graphics2D = scaledImage.createGraphics();
    graphics2D.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BILINEAR);
    graphics2D.drawImage(bi, 0, 0, 1000, 1000, null);
    graphics2D.dispose();
    ImageIO.write(scaledImage, "png", new File("c:/Java_Dev/Test.png"));
    bi.flush();
}

From source file:Main.java

public static void main(String[] args) throws IOException {
    BufferedImage img = new BufferedImage(20, 20, BufferedImage.TYPE_INT_ARGB);
    Graphics2D g = img.createGraphics();
    g.setColor(Color.white);//from  ww w  .ja va 2s  .co  m
    g.fillRect(0, 0, 20, 20);
    g.setColor(Color.black);
    g.fillRect(5, 5, 10, 10);

    Color[] mapping = new Color[] { Color.black, Color.white, // replace black with white 
            Color.white, Color.green // and white with green
    };

    ImageIO.write(img, "png", new File("original.png"));
    swapColors(img, mapping);
    ImageIO.write(img, "png", new File("swapped.png"));
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    int size = 200;
    BufferedImage image = new BufferedImage(size, size, BufferedImage.TYPE_INT_ARGB);

    Graphics2D g = image.createGraphics();
    g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
    g.setColor(Color.BLUE);/*from w  ww .  jav  a 2 s .  c  om*/
    for (int i = 0; i < size; i += 5) {
        g.drawOval(i, i, size - i, size - i);
    }
    g.dispose();

    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    ImageIO.write(image, "png", baos);

    String data = DatatypeConverter.printBase64Binary(baos.toByteArray());
    String imageString = "data:image/png;base64," + data;
    String html = "<html><body><img src='" + imageString + "'></body></html>";
    System.out.println(html);
}