How can i copy a specify area of the BufferedImage?

Question

hi all,
i consider this is a difficult level question and i do really need this urgently, please anyone who help me, thank in the first place.
here the question:
i have create an applet where it draw the character string into an buffered image using drawString(...); i have set the rendering option enabled. now the problem is that this drawn character is draw on the buffered lmage with both horizontal and vertical "gap", but i do not want it in that way, i want to make it exactly "fit" to the buffered image size. because after which i will "enlarge" this character to draw up a larger image, if this gap's is not eliminate, then after the enlargement process, there is a significant "white space gap" which is not nice to see (for me). anyone can help?
thanks

Answer 1

import java.awt.*;
import java.awt.font.*;
import java.awt.geom.*;
import java.awt.image.BufferedImage;
import javax.swing.*;
public class StringSize extends JPanel
    BufferedImage image;
    Font font;
    public StringSize()
        font = new Font("lucida sans demibold", Font.PLAIN, 36);
        createImage();
    protected void paintComponent(Graphics g)
        super.paintComponent(g);
        int w = getWidth();
        int h = getHeight();
        int x = (w - image.getWidth())/2;
        int y = (h - image.getHeight())/2;
        g.drawImage(image, x, y, this);
    private void createImage()
        int w = 240;
        int h = 100;
        image = new BufferedImage(w, h, BufferedImage.TYPE_INT_RGB);
        Graphics2D g2 = image.createGraphics();
        g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
                            RenderingHints.VALUE_ANTIALIAS_ON);
        g2.setPaint(new Color(200, 220, 240));
        g2.fillRect(0,0,w,h);
        String s = "hello world";
        g2.setFont(font);
        FontRenderContext frc = g2.getFontRenderContext();
        TextLayout layout = new TextLayout(s, font, frc);
        Rectangle2D bounds = layout.getBounds();
        //String sb = bounds.toString();  // [x=3.25,y=-27.75,w=203.375,h=28.1875]
        //System.out.println("bounds = " + sb.substring(sb.indexOf("[")));
        double width  = bounds.getWidth();
        double height = bounds.getHeight();
        double xScale = w/width;
        double yScale = h/height;
        //System.out.println("width = " + width + "\theight = " + height + "\n" +
        //                   "xScale = " + xScale + "\tyScale = " + yScale);
        AffineTransform at = AffineTransform.getScaleInstance(xScale, yScale);
        g2.setFont(g2.getFont().deriveFont(at));
        float dx = (float)(bounds.getX()*xScale);
        float dy = (float)((bounds.getY() + bounds.getHeight())*yScale);
        g2.setPaint(Color.red);
        g2.drawString(s, -dx, h - dy);
        g2.dispose();
    public static void main(String[] args)
        JFrame f = new JFrame();
        f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        f.getContentPane().add(new StringSize());
        f.setSize(400,400);
        f.setLocation(200,200);
        f.setVisible(true);
}