Saturday, December 1, 2012

Translate and scale with AffineTransform

Translate and scale with AffineTransform
Translate and scale with AffineTransform


package javaswing;

import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.geom.AffineTransform;
import java.io.IOException;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.imageio.ImageIO;
import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.SwingUtilities;

/**
*
* @web http://java-buddy.blogspot.com/
*/
public class JavaTestSwing {

static JFrameWin jFrameWindow;

public static class MyComponent extends JComponent{

@Override
protected void paintComponent(Graphics g) {
try {
//prepare a original Image source
Image image = ImageIO.read(this.getClass().getResource("duke.png"));

int w = image.getWidth(null);
int h = image.getHeight(null);
g.drawImage(image, 0, 0, w, h, null);

//translate and scale with AffineTransform
AffineTransform affineTransform = new AffineTransform();
affineTransform.translate(0, h);
Double sx = 2.0;
Double sy = 2.0;
affineTransform.scale(sx, sy);
((Graphics2D)g).drawImage(image, affineTransform, null);

} catch (IOException ex) {
Logger.getLogger(JavaTestSwing.class.getName()).log(Level.SEVERE, null, ex);
}

}
}

public static class JFrameWin extends JFrame{
public JFrameWin(){
this.setTitle("java-buddy.blogspot.com");
this.setSize(300, 300);
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

MyComponent myComponent = new MyComponent();
this.add(myComponent);
}
}

public static void main(String[] args){
Runnable doSwingLater = new Runnable(){

@Override
public void run() {
jFrameWindow = new JFrameWin();
jFrameWindow.setVisible(true);
}
};

SwingUtilities.invokeLater(doSwingLater);

}

}


No comments:

Post a Comment