I am able to load/save JTextArea unicode (devanagari) contents to file fine. I wanted to print the contents to pdf file so I am using iTextPDF api. My snippet is as below which prints empty file instead of with contents.
package i18n;
import java.awt.FlowLayout;
import java.awt.Font;
import java.awt.GridLayout;
import java.awt.TextArea;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Locale;
import java.util.ResourceBundle;
import javax.swing.Box;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.SwingUtilities;
import javax.swing.Timer;
import com.itextpdf.awt.PdfGraphics2D;
import com.itextpdf.text.Document;
import com.itextpdf.text.DocumentException;
import com.itextpdf.text.PageSize;
import com.itextpdf.text.pdf.PdfContentByte;
import com.itextpdf.text.pdf.PdfWriter;
public class MyNumbers extends JFrame {
private ResourceBundle rb;
private Font devanagariFont;
public MyNumbers (String language, String fontFile) {
loadResourceBundle(language);
loadFont(fontFile);
display();
}
TextArea txtArea;
private void display() {
String unicode = null;
JPanel labels = new JPanel(new GridLayout(0,2));
JLabel uni = null;
for(int i=0; i<=10; i++) {
unicode = rb.getString("" +i);
labels.add(new JLabel("" + i));
labels.add(uni = new JLabel(unicode));
//uni.setFont(devanagariFont);
}
labels.add(new JLabel("Time"));
labels.add(new ClockLabel());
getContentPane().setLayout(new FlowLayout());
Box b = Box.createVerticalBox();
b.add(labels);
b.add(txtArea = new TextArea(10, 40));
getContentPane().add(b);
addWindowListener(new WindowAdapter() {
@Override
public void windowOpened(WindowEvent e) {
// TODO Auto-generated method stub
try {
getInputContext().selectInputMethod(new Locale("hi", "IN"));
read();
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
}
@Override
public void windowClosing(WindowEvent e) {
// TODO Auto-generated method stub
try {
System.out.println(getInputContext().getLocale());
save();
print();
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
System.exit(0);
}
});
//setDefaultCloseOperation(EXIT_ON_CLOSE);
pack();
setVisible(true);
}
String fileName = "MyNumbers.txt";
private void save() throws IOException {
File f = new File(fileName);
BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(f), "UTF-16"));
String txt = txtArea.getText();
writer.write(txt);
writer.flush();
writer.close();
}
private void read() throws IOException {
File f = new File(fileName);
if(f.exists() == false) return;
BufferedReader reader = new BufferedReader(new InputStreamReader(new FileInputStream(f), "UTF-16"));
String line = null;
while((line = reader.readLine()) != null) {
txtArea.append(line + "\n");
}
reader.close();
}
private void loadFont(String fontFile) {
try {
InputStream input = getClass().getResourceAsStream(fontFile);
Font b = Font.createFont(Font.TRUETYPE_FONT, input);
devanagariFont = b.deriveFont(Font.PLAIN, 11);
} catch(Exception e) {
e.printStackTrace();
}
}
private void loadResourceBundle(String language) {
String base = getClass().getName() + "rb";
rb = ResourceBundle.getBundle(base, new Locale(language));
}
static class ClockLabel extends JLabel implements ActionListener {
private ClockLabel() {
new Timer(1000, this).start();
}
SimpleDateFormat sdf = new SimpleDateFormat("HH:mm:ss");
public void actionPerformed(ActionEvent e) {
Calendar cal = Calendar.getInstance();
setText(sdf.format(cal.getTime()));
}
}
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
SwingUtilities.invokeLater(new Runnable() {
public void run() {
new MyNumbers("hi", "Devnew.ttf");
}
});
}
String pdfFileName = "MyNumbers.pdf";
private void print() {
System.out.println("Printing PDF file ..");
try {
Document document = new Document(PageSize.A4);
PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream(pdfFileName));
document.open();
PdfContentByte cb = writer.getDirectContent( );
PdfGraphics2D g2d = new PdfGraphics2D(cb, PageSize.A4.getWidth(), PageSize.A4.getHeight());
System.out.println(txtArea.getSize());
txtArea.print(g2d);
g2d.dispose();
document.close ();
}
catch(DocumentException de) {
System.err.println(de.getMessage());
}
catch(IOException ioe) {
System.err.println(ioe.getMessage());
}
}
}
Output to console:
hi_IN
Printing PDF file ..
java.awt.Dimension[width=300,height=170]
Please let me know know the fix. I am not setting any font for graphics assuming that the swing JTextArea should be able to handle it. The unicode support is added with indicim.jar Input Method framework. As per output above the Dimension shows that text area is not of zero size.
In order to test above you need 2 files:
indicim.jar and place it in jre/lib/ext
MyNumbers.txt - unicode content file in devanagari as below which as such you can type it yourself in text area and program saves/loads on shutdown/startup. You save it in the project dir of eclipse.
अम२ जवान
अम२ जवान
अम२ जवान
अम२ जवान
अम२ जवान
अम२ जवान
अम२ जवान
अम२ जवान
अम२ जवान
ऊँ
A pdf file will get created in eclipse project dir but for now its empty.
