Draw Image on translated and scaled Graphics |
package javaswing; import java.awt.Graphics; import java.awt.Graphics2D; import java.awt.Image; 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 g.translate(0, h); Double sx = 2.0; Double sy = 2.0; ((Graphics2D)g).scale(sx, sy); g.drawImage(image, 0, 0, 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); } }
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