Source Code : Set Text Attribute

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Set Text Attribute

  

import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.MediaTracker;
import java.awt.Toolkit;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.awt.font.FontRenderContext;
import java.awt.font.GraphicAttribute;
import java.awt.font.ImageGraphicAttribute;
import java.awt.font.ShapeGraphicAttribute;
import java.awt.font.TextAttribute;
import java.awt.font.TextLayout;
import java.awt.geom.GeneralPath;
import java.awt.image.BufferedImage;
import java.text.AttributedCharacterIterator;
import java.text.AttributedString;

import javax.swing.JFrame;
import javax.swing.JPanel;

public class AttributesApp extends JPanel {
  String text = "Java Source and Support";

  AttributedString attribString;

  AttributedCharacterIterator attribCharIterator;

  Image image;
  public static void main(String arg[]) {
    JFrame frame = new JFrame();
    frame.addWindowListener(new WindowAdapter() {
      public void windowClosing(WindowEvent e) {
        System.exit(0);
      }
    });
    frame.getContentPane().add("Center", new AttributesApp());
    frame.setSize(500, 200);
    frame.setVisible(true);
  }

  public AttributesApp() {
    setBackground(Color.lightGray);
    setSize(500, 200);

    attribString = new AttributedString(text);

    GeneralPath star = new GeneralPath();
    star.moveTo(0, 0);
    star.lineTo(10, 30);
    star.lineTo(-10, 10);
    star.lineTo(10, 10);
    star.lineTo(-10, 30);
    star.closePath();
    GraphicAttribute starShapeAttr = new ShapeGraphicAttribute(star,
        GraphicAttribute.TOP_ALIGNMENT, false);
    attribString.addAttribute(TextAttribute.CHAR_REPLACEMENT,
        starShapeAttr, 0, 1);
    attribString.addAttribute(TextAttribute.FOREGROUND, new Color(255, 255,
        0), 0, 1);

    int index = text.indexOf("Java Source");
    attribString.addAttribute(TextAttribute.FOREGROUND, Color.blue, index,
        index + 7);
    Font font = new Font("sanserif", Font.ITALIC, 40);
    attribString.addAttribute(TextAttribute.FONT, font, index, index + 7);

    loadImage();
    BufferedImage bimage = new BufferedImage(image.getWidth(this), image
        .getHeight(this), BufferedImage.TYPE_INT_ARGB);
    Graphics2D big = bimage.createGraphics();
    big.drawImage(image, null, this);
    GraphicAttribute javaImageAttr = new ImageGraphicAttribute(bimage,
        GraphicAttribute.TOP_ALIGNMENT, 0, 0);

    index = text.indexOf("Java");
    attribString.addAttribute(TextAttribute.CHAR_REPLACEMENT,
        javaImageAttr, index - 1, index);

    font = new Font("serif", Font.BOLD, 60);
    attribString.addAttribute(TextAttribute.FONT, font, index, index + 4);
    attribString.addAttribute(TextAttribute.FOREGROUND, new Color(243, 63,
        163), index, index + 4); // Start and end indexes.

    index = text.indexOf("source");
    attribString.addAttribute(TextAttribute.UNDERLINE,
        TextAttribute.UNDERLINE_ON, index, index + 2);

    index = text.indexOf("and support");
    font = new Font("sanserif", Font.ITALIC, 40);
    attribString.addAttribute(TextAttribute.FONT, font, index, index + 10);

    attribString.addAttribute(TextAttribute.FOREGROUND, Color.white, index,
        index + 2); // Start and end indexes.
    attribString.addAttribute(TextAttribute.FOREGROUND, Color.blue,
        index + 3, index + 10); // Start and end indexes.
  }

  public void loadImage() {
    image = Toolkit.getDefaultToolkit().getImage("largeJava2sLogo.gif");
    MediaTracker mt = new MediaTracker(this);
    mt.addImage(image, 1);
    try {
      mt.waitForAll();
    } catch (Exception e) {
      System.out.println("Exception while loading.");
    }

    if (image.getWidth(this) == -1) {
      System.out.println("no images");
      System.exit(0);
    }
  }

  public void paintComponent(Graphics g) {
    super.paintComponent(g);
    Graphics2D g2 = (Graphics2D) g;

    attribCharIterator = attribString.getIterator();

    FontRenderContext frc = new FontRenderContext(null, false, false);
    TextLayout layout = new TextLayout(attribCharIterator, frc);

    layout.draw(g2, 20, 100);
  }
}
           
         
    
  

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