så på denne her
http://java.sun.com/docs/books/tutorial/2d/printing/index.htmldet næst sidste afsnit er om Printing, og under den er der noget med printning af components.
her er eksemplet (det virker faktisk)
import java.awt.geom.*;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import java.awt.print.PrinterJob;
import java.awt.event.*;
import java.awt.*;
import javax.swing.*;
import java.awt.print.*;
public class ShapesPrint extends JPanel implements Printable, ActionListener {
final static Color bg = Color.white;
final static Color fg = Color.black;
final static Color red = Color.red;
final static Color white = Color.white;
final static BasicStroke stroke = new BasicStroke(2.0f);
final static BasicStroke wideStroke = new BasicStroke(8.0f);
final static float dash1[] = {10.0f};
final static BasicStroke dashed = new BasicStroke(1.0f,
BasicStroke.CAP_BUTT,
BasicStroke.JOIN_MITER,
10.0f, dash1, 0.0f);
final static JButton button = new JButton(\"Print\");
public ShapesPrint() {
setBackground(bg);
button.addActionListener(this);
}
public void actionPerformed(ActionEvent e) {
if (e.getSource() instanceof JButton) {
PrinterJob printJob = PrinterJob.getPrinterJob();
printJob.setPrintable(this);
if (printJob.printDialog()) {
try {
printJob.print();
} catch (Exception ex) {
ex.printStackTrace();
}
}
}
}
public void paintComponent(Graphics g) {
super.paintComponent(g);
Graphics2D g2 = (Graphics2D) g;
drawShapes(g2);
}
public void drawShapes(Graphics2D g2){
Dimension d = getSize();
int gridWidth = 400 / 6;
int gridHeight = 300 / 2;
int rowspacing = 5;
int columnspacing = 7;
int rectWidth = gridWidth - columnspacing;
int rectHeight = gridHeight - rowspacing;
Color fg3D = Color.lightGray;
g2.setPaint(fg3D);
g2.drawRect(80, 80, 400 - 1, 310);
g2.setPaint(fg);
int x = 85;
int y = 87;
// draw Line2D.Double
g2.draw(new Line2D.Double(x, y+rectHeight-1, x + rectWidth, y));
x += gridWidth;
// draw Rectangle2D.Double
g2.setStroke(stroke);
g2.draw(new Rectangle2D.Double(x, y, rectWidth, rectHeight));
x += gridWidth;
// draw RoundRectangle2D.Double
g2.setStroke(dashed);
g2.draw(new RoundRectangle2D.Double(x, y, rectWidth,
rectHeight, 10, 10));
x += gridWidth;
// draw Arc2D.Double
g2.setStroke(wideStroke);
g2.draw(new Arc2D.Double(x, y, rectWidth, rectHeight, 90,
135, Arc2D.OPEN));
x += gridWidth;
// draw Ellipse2D.Double
g2.setStroke(stroke);
g2.draw(new Ellipse2D.Double(x, y, rectWidth, rectHeight));
x += gridWidth;
// draw GeneralPath (polygon)
int x1Points[] = {x, x+rectWidth, x, x+rectWidth};
int y1Points[] = {y, y+rectHeight, y+rectHeight, y};
GeneralPath polygon = new GeneralPath(GeneralPath.WIND_EVEN_ODD,
x1Points.length);
polygon.moveTo(x1Points[0], y1Points[0]);
for ( int index = 1; index < x1Points.length; index++ ) {
polygon.lineTo(x1Points[index], y1Points[index]);
};
polygon.closePath();
g2.draw(polygon);
// NEW ROW
x = 85;
y += gridHeight;
// draw GeneralPath (polyline)
int x2Points[] = {x, x+rectWidth, x, x+rectWidth};
int y2Points[] = {y, y+rectHeight, y+rectHeight, y};
GeneralPath polyline = new GeneralPath(GeneralPath.WIND_EVEN_ODD,
x2Points.length);
polyline.moveTo (x2Points[0], y2Points[0]);
for ( int index = 1; index < x2Points.length; index++ ) {
polyline.lineTo(x2Points[index], y2Points[index]);
};
g2.draw(polyline);
x += gridWidth;
// fill Rectangle2D.Double (red)
g2.setPaint(red);
g2.fill(new Rectangle2D.Double(x, y, rectWidth, rectHeight));
g2.setPaint(fg);
x += gridWidth;
// fill RoundRectangle2D.Double
GradientPaint redtowhite = new GradientPaint(x,y,red,x+rectWidth, y,white);
g2.setPaint(redtowhite);
g2.fill(new RoundRectangle2D.Double(x, y, rectWidth,
rectHeight, 10, 10));
g2.setPaint(fg);
x += gridWidth;
// fill Arc2D
g2.setPaint(red);
g2.fill(new Arc2D.Double(x, y, rectWidth, rectHeight, 90,
135, Arc2D.OPEN));
g2.setPaint(fg);
x += gridWidth;
// fill Ellipse2D.Double
redtowhite = new GradientPaint(x,y,red,x+rectWidth, y,white);
g2.setPaint(redtowhite);
g2.fill (new Ellipse2D.Double(x, y, rectWidth, rectHeight));
g2.setPaint(fg);
x += gridWidth;
// fill and stroke GeneralPath
int x3Points[] = {x, x+rectWidth, x, x+rectWidth};
int y3Points[] = {y, y+rectHeight, y+rectHeight, y};
GeneralPath filledPolygon = new GeneralPath(GeneralPath.WIND_EVEN_ODD,
x3Points.length);
filledPolygon.moveTo(x3Points[0], y3Points[0]);
for ( int index = 1; index < x3Points.length; index++ ) {
filledPolygon.lineTo(x3Points[index], y3Points[index]);
};
filledPolygon.closePath();
g2.setPaint(red);
g2.fill(filledPolygon);
g2.setPaint(fg);
g2.draw(filledPolygon);
}
public int print(Graphics g, PageFormat pf, int pi) throws PrinterException {
if (pi >= 1) {
return Printable.NO_SUCH_PAGE;
}
drawShapes((Graphics2D) g);
return Printable.PAGE_EXISTS;
}
public static void main(String s[]){
WindowListener l = new WindowAdapter() {
public void windowClosing(WindowEvent e) {System.exit(0);}
public void windowClosed(WindowEvent e) {System.exit(0);}
};
JFrame f = new JFrame();
f.addWindowListener(l);
JPanel panel = new JPanel();
panel.add(button);
f.getContentPane().add(BorderLayout.SOUTH, panel);
f.getContentPane().add(BorderLayout.CENTER, new ShapesPrint());
f.setSize(580, 500);
f.show();
}
}
