Copy Graphics into an image

Try drawing to the image rather than the component:

class PanelA extends JPanel {

...

paint(graphics g) {

Image copy = this.createImage(areaWidth, areaHeight);

Graphics graphics = copy.getGraphics();

... // draw your scene using calls to graphics and not g

panelB.setImahe(copy);

}

}

And PanelB shoud be:

class PanelB extends JPanel {

...

paint(graphics g) {

super.paint(g);

g.drawImage(image);

}

}

sierratecha at 2007-7-16 2:07:26 >

What I meant was, using the variables I used in my post above, make the call graphics.fillRect() instead of g.fillRect(x) or graphics.frameRect(x) versus g.fillRect(x) (or whatever functions you are using to draw to the graphics object). Then you actually draw to the image graphics (variable graphics) and not the panel graphics (variable g)

sierratecha at 2007-7-16 2:07:26 >

Take a look at this code...I set the layout to null so you can better see the panels and their dimensions

import java.applet.*;

import javax.swing.*;

import java.awt.*;

import java.awt.geom.*;

import java.awt.image.*;

public class ImageDraw extends Applet{

PanelA a;

PanelB b;

Image image;

public void init(){

a = new PanelA();

b = new PanelB();

setLayout(null)

a.setBounds(0, 0, 200, 200 );

b.setBounds(200, 0, 200, 200 );

add(a);

add(b);

image = a.createImage(200, 200 );

}

public void paint( Graphics g ){

super.paint(g);

a.repaint();

b.repaint();

}

class PanelA extends JPanel{

public void paint( Graphics gr ){

Graphics2D g = (Graphics2D)gr;

Graphics2D graphics = (Graphics2D)image.getGraphics();

graphics.fillRect( 20, 20, 40, 40 );

g.drawImage( image, new AffineTransform(), this );

g.drawString( "PanelA", 100, 100 );

}

class PanelB extends JPanel{

public void paint( Graphics gr){

Graphics2D g = (Graphics2D)gr;

g.drawImage( image, new AffineTransform(), this );

g.drawString( "PanelB", 100, 100 );

}

}

}

}

sierratecha at 2007-7-16 2:07:26 >