Impresion del contenido de un JTextArea o JTable

gqxns
16 de Abril del 2003
Hola!!!!
laguien podria ayudarme con un ejemplo o recomendando un sitio sobre como imprimir el contenido de estos objetos? MIL GRACIAS!!!

Nicolas
[email protected]

Luis
16 de Abril del 2003
Hi gpxns.
Esta clase imprime una tabla completa que crea al inicio. Echale un vistazo y podras mejorarla para que haga lo que realmente necesitas. Un saludo.


import javax.swing.*;
import javax.swing.table.*;
import java.awt.print.*;
import java.util.*;
import java.awt.*;
import java.awt.event.*;
import java.awt.geom.*;
import java.awt.Dimension;

public class Report implements Printable{

JFrame frame;
JTable tableView;

public Report() {
frame = new JFrame("Sales Report");
frame.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {System.exit(0);}});

final String[] headers = {"Description", "open price",
"latest price", "End Date", "Quantity"};
final Object[][] data = {
{"Box of Biros", "1.00", "4.99", new Date(), new Integer(2)},
{"Blue Biro", "0.10", "0.14", new Date(), new Integer(1)},
{"legal pad", "1.00", "2.49", new Date(), new Integer(1)},
{"tape", "1.00", "1.49", new Date(), new Integer(1)},
{"stapler", "4.00", "4.49", new Date(), new Integer(1)},
{"legal pad", "1.00", "2.29", new Date(), new Integer(5)}
};

TableModel dataModel = new AbstractTableModel() {
public int getColumnCount() { return headers.length; }
public int getRowCount() { return data.length;}
public Object getValueAt(int row, int col) {
return data[row][col];}
public String getColumnName(int column) {
return headers[column];}
public Class getColumnClass(int col) {
return getValueAt(0,col).getClass();}
public boolean isCellEditable(int row, int col) {
return (col==1);}
public void setValueAt(Object aValue, int row, int column) {
data[row][column] = aValue;
}
};

tableView = new JTable(dataModel);
JScrollPane scrollpane = new JScrollPane(tableView);

scrollpane.setPreferredSize(new Dimension(500, 80));
frame.getContentPane().setLayout(new BorderLayout());
frame.getContentPane().add(BorderLayout.CENTER,scrollpane);
frame.pack();
JButton printButton= new JButton();

printButton.setText("print me!");

frame.getContentPane().add(BorderLayout.SOUTH,printButton);

// for faster printing turn double buffering off

RepaintManager.currentManager(
frame).setDoubleBufferingEnabled(false);

printButton.addActionListener( new ActionListener(){
public void actionPerformed(ActionEvent evt) {
PrinterJob pj=PrinterJob.getPrinterJob();
pj.setPrintable(Report.this);
pj.printDialog();
try{
pj.print();
}catch (Exception PrintException) {}
}
});

frame.setVisible(true);
}

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
pageFormat.setOrientation(PageFormat.LANDSCAPE);
double pageHeight = pageFormat.getImageableHeight()-fontHeight;
double pageWidth = pageFormat.getImageableWidth();
double tableWidth = (double) tableView.getColumnModel().getTotalColumnWidth();
double scale = 1;
if (tableWidth >= pageWidth) {
scale = pageWidth / tableWidth;
}

double headerHeightOnPage= tableView.getTableHeader().getHeight()*scale;
double tableWidthOnPage=tableWidth*scale;

double oneRowHeight=(tableView.getRowHeight()+tableView.getRowMargin())*scale;
int numRowsOnAPage=(int)((pageHeight-headerHeightOnPage)/oneRowHeight);

double pageHeightForTable=oneRowHeight*numRowsOnAPage;
int totalNumPages= (int)Math.ceil(((double)tableView.getRowCount())/numRowsOnAPage);

if(pageIndex>=totalNumPages) {
return NO_SUCH_PAGE;
}

g2.translate(pageFormat.getImageableX(),
pageFormat.getImageableY());
g2.drawString("Page: "+(pageIndex+1),(int)pageWidth/2-35,
(int)(pageHeight+fontHeight-fontDesent));//bottom center

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 = tableView.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));
}

g2.scale(scale,scale);
tableView.paint(g2);
g2.scale(1/scale,1/scale);
g2.translate(0f,pageIndex*pageHeightForTable);
g2.translate(0f, -headerHeightOnPage);
g2.setClip(0, 0,(int) Math.ceil(tableWidthOnPage),
(int)Math.ceil(headerHeightOnPage));
g2.scale(scale,scale);
tableView.getTableHeader().paint(g2);//paint header at top

return Printable.PAGE_EXISTS;
}


public static void main(String[] args) {
new Report();
}
}