Example usage for java.awt AlphaComposite getInstance

Introduction

In this page you can find the example usage for java.awt AlphaComposite getInstance.

Prototype

public static AlphaComposite getInstance(int rule, float alpha)

Source Link

Document

Creates an AlphaComposite object with the specified rule and the constant alpha to multiply with the alpha of the source.

Usage

From source file:Main.java

public static void main(String[] args) throws IOException {
    URL url = new URL("http://www.java2s.com/style/download.png");
    BufferedImage im = ImageIO.read(url);
    URL url2 = new URL("http://www.java2s.com/style/download.png");
    BufferedImage im2 = ImageIO.read(url2);
    Graphics2D g = im.createGraphics();
    g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER, 0.4f));
    g.drawImage(im2, (im.getWidth() - im2.getWidth()) / 2, (im.getHeight() - im2.getHeight()) / 2, null);
    g.dispose();/*from  ww w  .  j a v a  2s.  c o  m*/

    display(im);
    ImageIO.write(im, "jpeg", new File("output.jpeg"));
}

From source file:Main.java

/**
 * Creates a shadow mask/*  www  .  j a  va 2 s . c o  m*/
 * @param image
 * @param shadowColor
 * @param shadowOpacity
 * @return
 */
private static BufferedImage createShadowMask(BufferedImage image, Color shadowColor, float shadowOpacity) {
    BufferedImage mask = new BufferedImage(image.getWidth(), image.getHeight(), BufferedImage.TYPE_INT_ARGB);

    Graphics2D g2d = mask.createGraphics();
    g2d.drawImage(image, 0, 0, null);
    g2d.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_IN, shadowOpacity));
    g2d.setColor(shadowColor);
    g2d.fillRect(0, 0, image.getWidth(), image.getHeight());
    g2d.dispose();

    return mask;
}

From source file:Main.java

/**
 * Changes the opacity of a given image.
 * @param src The source image./*  w  w w  .  j av a 2  s  . co  m*/
 * @param opacity The opacity to change to.
 * @return
 */
public static BufferedImage imgUtilAdjustImageTransparency(BufferedImage src, float opacity) {
    if (src == null)
        return null;
    AlphaComposite ac = AlphaComposite.getInstance(AlphaComposite.SRC_OVER, opacity);
    BufferedImage cpy = new BufferedImage(src.getWidth(), src.getHeight(), BufferedImage.TYPE_INT_ARGB);
    Graphics2D g = (Graphics2D) cpy.getGraphics();
    g.setComposite(ac);
    g.drawImage(src, 0, 0, null);
    g.dispose();
    return cpy;
}

From source file:Main.java

public void paint(Graphics g) {
    Graphics2D g2d = (Graphics2D) g;

    AlphaComposite ac = AlphaComposite.getInstance(AlphaComposite.SRC_ATOP, 0.5f);

    BufferedImage buffImg = new BufferedImage(60, 60, BufferedImage.TYPE_INT_ARGB);
    Graphics2D gbi = buffImg.createGraphics();

    gbi.setPaint(Color.red);/*from   w ww.  j  ava 2 s .  com*/
    gbi.fillRect(0, 0, 40, 40);
    gbi.setComposite(ac);

    gbi.setPaint(Color.green);
    gbi.fillRect(5, 5, 40, 40);

    g2d.drawImage(buffImg, 20, 20, null);
}

From source file:CompositingDST.java

public void paint(Graphics g) {
    Graphics2D g2d = (Graphics2D) g;

    AlphaComposite ac = AlphaComposite.getInstance(AlphaComposite.DST, 0.5f);

    BufferedImage buffImg = new BufferedImage(60, 60, BufferedImage.TYPE_INT_ARGB);
    Graphics2D gbi = buffImg.createGraphics();

    gbi.setPaint(Color.red);/* ww w  . j  a va2s .c o  m*/
    gbi.fillRect(0, 0, 40, 40);
    gbi.setComposite(ac);

    gbi.setPaint(Color.green);
    gbi.fillRect(5, 5, 40, 40);

    g2d.drawImage(buffImg, 20, 20, null);
}

From source file:CompositingDST_ATOP.java

public void paint(Graphics g) {
    Graphics2D g2d = (Graphics2D) g;

    AlphaComposite ac = AlphaComposite.getInstance(AlphaComposite.SRC_OUT, 0.5f);

    BufferedImage buffImg = new BufferedImage(60, 60, BufferedImage.TYPE_INT_ARGB);
    Graphics2D gbi = buffImg.createGraphics();

    gbi.setPaint(Color.red);/*from  ww  w . ja  v a 2  s  . co m*/
    gbi.fillRect(0, 0, 40, 40);
    gbi.setComposite(ac);

    gbi.setPaint(Color.green);
    gbi.fillRect(5, 5, 40, 40);

    g2d.drawImage(buffImg, 20, 20, null);
}

From source file:CompositingDST_ATOP.java

public void paint(Graphics g) {
    Graphics2D g2d = (Graphics2D) g;

    AlphaComposite ac = AlphaComposite.getInstance(AlphaComposite.DST_ATOP, 0.5f);

    BufferedImage buffImg = new BufferedImage(60, 60, BufferedImage.TYPE_INT_ARGB);
    Graphics2D gbi = buffImg.createGraphics();

    gbi.setPaint(Color.red);/*w  ww .ja v a  2s. c  o  m*/
    gbi.fillRect(0, 0, 40, 40);
    gbi.setComposite(ac);

    gbi.setPaint(Color.green);
    gbi.fillRect(5, 5, 40, 40);

    g2d.drawImage(buffImg, 20, 20, null);
}

From source file:CompositingDST_ATOP.java

public void paint(Graphics g) {
    Graphics2D g2d = (Graphics2D) g;

    AlphaComposite ac = AlphaComposite.getInstance(AlphaComposite.SRC, 0.5f);

    BufferedImage buffImg = new BufferedImage(60, 60, BufferedImage.TYPE_INT_ARGB);
    Graphics2D gbi = buffImg.createGraphics();

    gbi.setPaint(Color.red);//from  w  ww.  jav a2  s .c o  m
    gbi.fillRect(0, 0, 40, 40);
    gbi.setComposite(ac);

    gbi.setPaint(Color.green);
    gbi.fillRect(5, 5, 40, 40);

    g2d.drawImage(buffImg, 20, 20, null);
}

From source file:CompositingDST_ATOP.java

public void paint(Graphics g) {
    Graphics2D g2d = (Graphics2D) g;

    AlphaComposite ac = AlphaComposite.getInstance(AlphaComposite.DST_OUT, 0.5f);

    BufferedImage buffImg = new BufferedImage(60, 60, BufferedImage.TYPE_INT_ARGB);
    Graphics2D gbi = buffImg.createGraphics();

    gbi.setPaint(Color.red);//from w w w  .  ja v a2  s.  co  m
    gbi.fillRect(0, 0, 40, 40);
    gbi.setComposite(ac);

    gbi.setPaint(Color.green);
    gbi.fillRect(5, 5, 40, 40);

    g2d.drawImage(buffImg, 20, 20, null);
}

From source file:TransparentRectangles.java

public void paint(Graphics g) {
    super.paint(g);
    Graphics2D g2d = (Graphics2D) g;
    for (int i = 1; i <= 10; i++) {
        g2d.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER, i * 0.1f));
        g2d.fillRect(50 * i, 20, 50, 50);
    }//from  ww  w.j a v a2s  .  co m
}