JTables

[Richard West]

Hi everyone,

I am currently trying to print a multipage JTable but the the thing is on the left hand side of the JTable does not have any grid lines and i have tried to draw a rectangle around the jTable before printing it but nothing is happening.

Another thing is that when the JTable goes on the next page for printing there are trailing grid lines on the previous page. I have tried clipping and translating it but nothing works.

You guys can try removing the painting of the Table Headers to get a clearer picture if you want

Here is the code with a mini test program so you guys can run the program and see what i mean

import java.awt.*;
import java.awt.image.*;
import java.io.*;
import java.util.*;
import java.awt.print.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.table.*;
import javax.imageio.*;
 
public class JTables2 implements ActionListener
 
{
 
JFrame fr = new JFrame ("Frame");
 
JButton Button12 = new JButton("Print");
 
DefaultTableModel TableModel1 = new DefaultTableModel(20, 30);
 
//The below command line sets the table model to the JTable
 
JTable Table1 = new JTable(TableModel1);
 
JScrollPane ScrollPane1 = new JScrollPane(Table1, ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS, 
ScrollPaneConstants.HORIZONTAL_SCROLLBAR_ALWAYS);  
 
Dimension Size1 = new Dimension();
 
PrinterJob prnJob;
PageFormat format;
 
public void initialize ()
{ 
Container pane = fr.getContentPane();
pane.setLayout(new FlowLayout());
fr.setSize(250,300);
fr.setLocation(300,300);
fr.setBackground(Color.lightGray);
//The below command line must be set to false so that user 
//resizing is allowed
 
Table1.setAutoCreateColumnsFromModel(false);
Size1.width = 350;
Size1.height = 250;
ScrollPane1.setPreferredSize(Size1);
Table1.setModel(TableModel1);
Table1.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
Table1.setAutoResizeMode(JTable.AUTO_RESIZE_OFF); 
 
pane.add(ScrollPane1);
pane.add(Button12);
 
fr.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
Button12.addActionListener(this);
fr.pack();
fr.setVisible(true);
}
 

public void printData () 
{
//This function prints the contents of the JTable
 
StyledTextTableRenderer2 StyledTextTableRenderer1 = new StyledTextTableRenderer2();
StyledTextTableRenderer1.settable(Table1);
 
try 
{
//The below command line gets the printer job
 
prnJob = PrinterJob.getPrinterJob();
 
if(format == null)
{
format = prnJob.defaultPage();
}
 
//The below command line sets the printable interface and the
//format for the page to be printed
 
prnJob.setPrintable(StyledTextTableRenderer1, format);
 
//The below command line calls the native print dialog
 
if(prnJob.printDialog() == false)
{
return;
}
 
//The below command line prints out the document if the user clicked Ok
 
prnJob.print();
}
 
catch (PrinterException e) 
{
 
}
 
}
 
public void actionPerformed(ActionEvent event)
{
JComponent b = (JComponent)event.getSource();
 
if(b == Button12)
{
printData();
fr.repaint();
}
 
}
 
public static void main(String args[])
{
JTables2 a = new JTables2(); 
a.initialize();
}
}
 
class StyledTextTableRenderer2 implements Printable
{
JTable Table1 = new JTable();
 
public int print(Graphics g, PageFormat pageFormat, int pageIndex) throws PrinterException 
{
 
Graphics2D  g2 = (Graphics2D) g;
g2.setColor(Color.black);
 
int fontHeight = g2.getFontMetrics().getHeight();
int fontDesent = g2.getFontMetrics().getDescent();
 
//leave room for page number
 
double pageHeight = pageFormat.getImageableHeight() - fontHeight;
double pageWidth = pageFormat.getImageableWidth();
 
double tableWidth = (double)Table1.getColumnModel().getTotalColumnWidth();
 
double headerHeightOnPage = Table1.getTableHeader().getHeight();
double tableWidthOnPage = tableWidth;
 
double oneRowHeight = (Table1.getRowHeight()+ Table1.getRowMargin());
int numRowsOnAPage = (int)((pageHeight-headerHeightOnPage)/ oneRowHeight);
double pageHeightForTable = oneRowHeight * numRowsOnAPage;
int totalNumPages= (int)Math.ceil(((double)Table1.getRowCount())/numRowsOnAPage);
 
if(pageIndex>=totalNumPages) 
{
Table1.setShowGrid(true);
 
return NO_SUCH_PAGE;
}
 
g2.translate(pageFormat.getImageableX(), pageFormat.getImageableY());
//bottom center
 
g2.drawString("Page "+ (pageIndex+1), (int)pageWidth/2-35, (int)(pageHeight
+ fontHeight-fontDesent));
 
g2.translate(0f,headerHeightOnPage);
g2.translate(0f,-pageIndex * pageHeightForTable);
 
//If this piece of the table is smaller 
//than the size available,
//clip to the appropriate bounds.
 
if(pageIndex + 1 == totalNumPages) 
{
int lastRowPrinted = numRowsOnAPage * pageIndex;
int numRowsLeft = Table1.getRowCount() - lastRowPrinted;
g2.setClip(0,(int)(pageHeightForTable * pageIndex), (int) Math.ceil(tableWidthOnPage),
(int)Math.ceil(oneRowHeight * numRowsLeft));
}
 
//else clip to the entire area available
 
else
{    
g2.setClip(0, (int)(pageHeightForTable*pageIndex), (int) Math.ceil(tableWidthOnPage),
(int) Math.ceil(pageHeightForTable));        
}
//This is where i try to draw the rectangle around 
//the JTable
g2.drawRect(0,(int)headerHeightOnPage,(int)tableWidthOnPage, (int)((pageHeightForTable)* Table1.getRowCount()));
 
Table1.paint(g2);
g2.translate(0f, pageIndex * pageHeightForTable);
g2.translate(0f, -headerHeightOnPage);
g2.setClip(0, 0, (int)Math.ceil(tableWidthOnPage),(int)Math.ceil(headerHeightOnPage));
Table1.getTableHeader().paint(g2);
//paint header at top
 
/*
g2.translate(0f, pageIndex * pageHeightForTable);
g2.setColor(Color.gray);
g2.drawRect(0,0,(int)tableWidthOnPage, (int)((pageHeightForTable)* Table1.getRowCount()));
*/
System.out.println("" + pageHeightForTable);
 
return Printable.PAGE_EXISTS;
}
 
public void settable(JTable table)
{
//This function gets the JTable and its table model
 
Table1 = table;
Table1.setShowGrid(false);
}
 
}

Basically i am trying to print a JTable with the option of table headers as a complete grid and withou any trainling lines

I know that 1.5 now has printing but i need to use this way of printing(i.e. by using the printable interface) for the program to suit a special kind of need

Any help is greatly appreciated

Thank You

Yous Sincerely

Richard West