I am using
iText version 5.3.3. Java jdk 1.6.0
I am working on a Report software where user want's to customize JTable cells with 1 point Black border which appears on the JTable as below:-
Pdf Output:
On both the outputs there is some gap in between the cells for 1 point border cells. We found that lines are not on the grid lines. Is there anyway possible these border lines come on the grid as 1 point line. Following is the sample code to test the problem above with JTable and pdfs.
TableImage.java
import java.awt.BorderLayout;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.image.BufferedImage;
import java.io.FileOutputStream;
import javax.swing.ImageIcon;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.border.LineBorder;
import javax.swing.table.JTableHeader;
import com.lowagie.text.Document;
import com.lowagie.text.PageSize;
import com.lowagie.text.pdf.PdfContentByte;
import com.lowagie.text.pdf.PdfTemplate;
import com.lowagie.text.pdf.PdfWriter;
class TableImage {
public static void main(String[] args) throws Exception {
Object[][] data = {
{"Hari", new Integer(23), new Double(78.23), (true)},
{"James", new Integer(23), new Double(47.64), (false)},
{"Sally", new Integer(22), new Double(84.81), (true)}
};
String[] columns = {"Name", "Age", "GPA", "Pass"};
JTable table = new JTable(data, columns);
JScrollPane scroll = new JScrollPane(table);
JPanel p = new JPanel(new BorderLayout());
p.add(scroll, BorderLayout.CENTER);
JOptionPane.showMessageDialog(null, p);
JTableHeader h = table.getTableHeader();
int x = table.getWidth();
int y = table.getHeight();
table.setDefaultRenderer(Object.class,
new ColumnAlignmentRenderer(
table.getDefaultRenderer(Object.class)));
BufferedImage bi = new BufferedImage(x, y, BufferedImage.TYPE_INT_RGB);
Graphics g = bi.createGraphics();
Graphics2D g2 = (Graphics2D) g;
table.paint(g2);
JOptionPane.showMessageDialog(null, new JLabel(new ImageIcon(bi)));
print(table);
}
private static void print(JTable table) {
Document document = new Document(PageSize.A4.rotate());
try {
PdfWriter writer = PdfWriter.getInstance(document,
new FileOutputStream("F://jTable.pdf"));
document.open();
PdfContentByte cb = writer.getDirectContent();
cb.saveState();
PdfTemplate pdfTemplate = cb.createTemplate(
table.getWidth(), table.getHeight());
Graphics2D g2 = pdfTemplate.createGraphics(
table.getWidth(), table.getHeight());
table.print(g2);
cb.addTemplate(pdfTemplate, 20, 100);
g2.dispose();
cb.restoreState();
} catch (Exception e) {
System.err.println(e.getMessage());
}
document.close();
}
private TableImage() {
}
}
ColumnAlignmentRenderer.java
import java.awt.Color;
import java.awt.Component;
import java.awt.Font;
import java.util.HashMap;
import java.util.Map;
import javax.swing.BorderFactory;
import javax.swing.JLabel;
import javax.swing.JTable;
import javax.swing.SwingConstants;
import javax.swing.border.Border;
import javax.swing.table.DefaultTableCellRenderer;
import javax.swing.table.TableCellRenderer;
public class ColumnAlignmentRenderer extends DefaultTableCellRenderer {
private TableCellRenderer mWrappedRenderer;
private HashMap objFormatCellMap;
public ColumnAlignmentRenderer(TableCellRenderer pWrappedRenderer) {
mWrappedRenderer = pWrappedRenderer;
}
public Component getTableCellRendererComponent(JTable pTable,
Object pValue, boolean pIsSelected,
boolean pHasFocus, int pRow, int pColumn) {
int hAlignment = SwingConstants.LEFT;
int vAlignment = SwingConstants.CENTER;
String pattern = "##000.0";
Font font = pTable.getFont();
Border cellBorder = pTable.getBorder();
// Border cellBorder = BorderFactory.createCompoundBorder();
Color backgroundColor = Color.WHITE;
Color foregroundColor = Color.BLACK;
// Use the wrapped renderer
Component renderedComponent =
mWrappedRenderer.getTableCellRendererComponent(
pTable, pValue, pIsSelected, pHasFocus, pRow, pColumn);
int iLeft = 1;
int iRight = 1;
int iTop = 1;
int iBottom = 1;
Map fontAttributes = font.getAttributes();
cellBorder = BorderFactory.createCompoundBorder(cellBorder,
new ZoneBorder(iTop, iLeft, iBottom, iRight, Color.BLACK));
((JLabel) renderedComponent).setBorder(cellBorder);
if (pIsSelected) {
renderedComponent.setBackground(pTable.getSelectionBackground());
}
return renderedComponent;
}
public void setHashFormatCellData(HashMap hashFormatCellData) {
this.objFormatCellMap = hashFormatCellData;
}
}
ZoneBorder.java
import java.awt.*;
import javax.swing.border.*;
public class ZoneBorder implements Border {
private static final int WIDTH = 1;
private Color color;
private int iTop = 0, iRight = 0, iBottom = 0, iLeft = 0;
public ZoneBorder(int T, int R, int B, int L, Color color) {
this.iTop = T;
this.iRight = R;
this.iBottom = B;
this.iLeft = L;
this.color = color;
}
public boolean isBorderOpaque() {
return false;
}
public Insets getBorderInsets(Component c) {
return new Insets(iTop, iRight, iBottom, iLeft);
}
public void paintBorder(Component c, Graphics g, int x, int y, int width, int height) {
Color oldColor = g.getColor();
g.setColor(color);
for (int i = 0; i < iTop; i++) {
g.drawLine(x, y + i, x + width - 1, y + i);
}
//g.setColor(southColor);
for (int i = 0; i < iBottom; i++) {
g.drawLine(x, y + height - i - 1, x + width - 1, y + height - i - 1);
}
//g.setColor(eastColor);
for (int i = 0; i < iLeft; i++) {
g.drawLine(x + i, y, x + i, y + height - 1);
}
//g.setColor(westColor);
for (int i = 0; i < iRight; i++) {
g.drawLine(x + width - i - 1, y, x + width - i - 1, y + height - 1);
}
g.setColor(oldColor);
}
}
- Update 1
I changed the code to decrease intercellspacing of a table cell to 0 with
table.setIntercellSpacing(new Dimension(0,0));
as well as also changed the row margin to 0
table.setRowMargin(0);
But when rows are more it shows me blank lines in between the rows at some places as below:-
For this I increased data to 9 rows with the below code:-
Object[][] data = {
{"Hari", new Integer(23), new Double(78.23), (true)},
{"James", new Integer(23), new Double(47.64), (false)},
{"Sally", new Integer(22), new Double(84.81), (true)},
{"Sally", new Integer(22), new Double(84.81), (true)},
{"Sally", new Integer(22), new Double(84.81), (true)},
{"Hari", new Integer(23), new Double(78.23), (true)},
{"James", new Integer(23), new Double(47.64), (false)},
{"Hari", new Integer(23), new Double(78.23), (true)},
{"James", new Integer(23), new Double(47.64), (false)}
};
Please suggest something on this.
**
- Update 2
**
I observed that If we saw the pdf in 75% zoomin JTable looks accurate. But when this JTable is seen at 100% It is shown with a difference in borders and colors outside cells. Do we have anything through which we can scale JTable printing i.e table.print(g) from 75 to 25% before printing it to pdf i.e 100%. If there are any JTable scaling ideas that would be great help! Thanks!
