printDialog freezes when handling large list of printers in java 1.4, solaris 7.
When I do an lpstat -a, it lists over 700 printers. So the bug is that the print dialog box for JDK 1.4 can't handle large number of printers. It should truncate the results or allow users to put a wildcard specification to narrow the search results.
If I create a .printers file in my home directory with say, 5 printers,
then it doesn't hang. It just doesn't seem to like large printer
lists. However, defining the .printers file is not something that most
users know how to do given its bizarre syntax. The lpconfig command is
not much easier either and can only be run as root.
The following example code from the Java2D tutorial exhibits this problem
http://java.sun.com/docs/books/tutorial/2d/printing/example-1dot2/ShapesPrint.java
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();
}
}
Name: vtR10009 Date: 06/11/2002
This bug causes failure of JCK tests:
api/javax_print/CancelablePrintJob/index.html#Cancel
api/javax_print/DocPrintJob/index.html#AttributeListener
api/javax_print/DocPrintJob/index.html#Get
api/javax_print/DocPrintJob/index.html#JobListener
api/javax_print/PrintService/index.html#hashCode
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