When you call getX() and getY() on any Swing component, you get the x and y relative to the component's container, not the screen. Instead you want the location of the component relative to the screen and get position based on that via getLocationOnScreen()
Point p = txtCodigo.getLocationOnScreen();
int x = p.x;
int y = p.y;
As per MadProgrammer's comment, you could simply call printAll(Graphics g) on your txtCodigo component, passing in a Graphics object obtained from a properly sized BufferedImage and forgo use of a Robot.
Dimension d = txtCodigo.getSize();
BufferedImage img = new BufferedImage(d.width, d.height, BufferedImage.TYPE_INT_ARGB);
Graphics g = img.getGraphics();
txtCodigo.printAll(g);
g.dispose();
// use ImageIO to write BufferedImage to file
To compare to the two methods:
import java.awt.AWTException;
import java.awt.BorderLayout;
import java.awt.Component;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Point;
import java.awt.Rectangle;
import java.awt.Robot;
import java.awt.event.ActionEvent;
import java.awt.image.BufferedImage;
import java.util.Random;
import javax.swing.*;
@SuppressWarnings("serial")
public class RobotVsPrintAll extends JPanel {
private static final int WORDS = 400;
private JTextArea textArea = new JTextArea(20, 40);
private JScrollPane scrollPane = new JScrollPane(textArea);
private Random random = new Random();
public RobotVsPrintAll() {
StringBuilder sb = new StringBuilder();
for (int i = 0; i < WORDS; i++) {
int wordLength = random.nextInt(4) + 4;
for (int j = 0; j < wordLength; j++) {
char myChar = (char) (random.nextInt('z' - 'a' + 1) + 'a');
sb.append(myChar);
}
sb.append(" ");
}
textArea.setText(sb.toString());
textArea.setLineWrap(true);
textArea.setWrapStyleWord(true);
scrollPane.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);
JButton robot1Btn = new JButton(new Robot1Action("Robot 1"));
JButton robot2Btn = new JButton(new Robot2Action("Robot 2"));
JButton printAllBtn = new JButton(new PrintAllAction("Print All"));
JPanel btnPanel = new JPanel();
btnPanel.add(robot1Btn);
btnPanel.add(robot2Btn);
btnPanel.add(printAllBtn);
setLayout(new BorderLayout());
add(scrollPane, BorderLayout.CENTER);
add(btnPanel, BorderLayout.PAGE_END);
}
private void displayImg(BufferedImage img) {
ImageIcon icon = new ImageIcon(img);
JOptionPane.showMessageDialog(this, icon, "Display Image",
JOptionPane.PLAIN_MESSAGE);
}
private class Robot1Action extends AbstractAction {
public Robot1Action(String name) {
super(name);
int mnemonic = (int) name.charAt(0);
putValue(MNEMONIC_KEY, mnemonic);
}
@Override
public void actionPerformed(ActionEvent e) {
try {
Component comp = scrollPane.getViewport();
Point p = comp.getLocationOnScreen();
Dimension d = comp.getSize();
Robot robot = new Robot();
Rectangle screenRect = new Rectangle(p.x, p.y, d.width, d.height);
BufferedImage img = robot.createScreenCapture(screenRect);
displayImg(img);
} catch (AWTException e1) {
e1.printStackTrace();
}
}
}
private class Robot2Action extends AbstractAction {
public Robot2Action(String name) {
super(name);
int mnemonic = (int) name.charAt(0);
putValue(MNEMONIC_KEY, mnemonic);
}
@Override
public void actionPerformed(ActionEvent e) {
try {
Component comp = textArea;
Point p = comp.getLocationOnScreen();
Dimension d = comp.getSize();
Robot robot = new Robot();
Rectangle screenRect = new Rectangle(p.x, p.y, d.width, d.height);
BufferedImage img = robot.createScreenCapture(screenRect);
displayImg(img);
} catch (AWTException e1) {
e1.printStackTrace();
}
}
}
private class PrintAllAction extends AbstractAction {
public PrintAllAction(String name) {
super(name);
int mnemonic = (int) name.charAt(0);
putValue(MNEMONIC_KEY, mnemonic);
}
public void actionPerformed(ActionEvent e) {
Dimension d = textArea.getSize();
BufferedImage img = new BufferedImage(d.width, d.height, BufferedImage.TYPE_INT_ARGB);
Graphics g = img.getGraphics();
textArea.printAll(g);
g.dispose();
displayImg(img);
}
}
private static void createAndShowGui() {
RobotVsPrintAll mainPanel = new RobotVsPrintAll();
JFrame frame = new JFrame("Robot Vs PrintAll");
frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
frame.getContentPane().add(mainPanel);
frame.pack();
frame.setLocationByPlatform(true);
frame.setVisible(true);
}
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
createAndShowGui();
}
});
}
}
If you print the text component with printAll, you get the entire text component, even the parts that are not displayed in the JScrollPane's viewport.
