hey guys
i am developing a game...
in which when i press a button it has to change its color...
so , i created button, used action listener to it...
if(ae.getActionCommand().equals("b1")) // here b1 is the button
{
b1.setBackground(Color.black);
frame.invalidate();
frame.validate();
System.out.println("button b1 pressed...!!!");
}i also used
panel.revalidate();
repaint();
but of no use.....
so what to do.... please suggest any idea for this...
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.image.BufferedImage;
import java.util.LinkedList;
import java.util.Queue;
import java.util.Random;
import javax.swing.*;
//http://stackoverflow.com/questions/7943584/update-jlabel-every-x-seconds-from-arraylistlist-java
public class ButtonsIcon extends JFrame implements Runnable {
private static final long serialVersionUID = 1L;
private Queue<Icon> iconQueue = new LinkedList<Icon>();
private JLabel label = new JLabel();
private Random random = new Random();
private JPanel buttonPanel = new JPanel();
private JPanel labelPanel = new JPanel();
private Timer backTtimer;
private Timer labelTimer;
private JLabel one = new JLabel("one");
private JLabel two = new JLabel("two");
private JLabel three = new JLabel("three");
private final String[] petStrings = {"Bird", "Cat", "Dog",
"Rabbit", "Pig", "Fish", "Horse", "Cow", "Bee", "Skunk"};
private boolean runProcess = true;
private int index = 1;
private int index1 = 1;
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
ButtonsIcon t = new ButtonsIcon();
}
});
}
public ButtonsIcon() {
iconQueue.add(UIManager.getIcon("OptionPane.errorIcon"));
iconQueue.add(UIManager.getIcon("OptionPane.informationIcon"));
iconQueue.add(UIManager.getIcon("OptionPane.warningIcon"));
iconQueue.add(UIManager.getIcon("OptionPane.questionIcon"));
one.setFont(new Font("Dialog", Font.BOLD, 24));
one.setHorizontalAlignment(javax.swing.SwingConstants.CENTER);
two.setFont(new Font("Dialog", Font.BOLD, 24));
two.setHorizontalAlignment(javax.swing.SwingConstants.CENTER);
three.setFont(new Font("Dialog", Font.BOLD, 10));
three.setHorizontalAlignment(javax.swing.SwingConstants.CENTER);
labelPanel.setLayout(new GridLayout(0, 3, 4, 4));
labelPanel.add(one);
labelPanel.add(two);
labelPanel.add(three);
//labelPanel.setBorder(new LineBorder(Color.black, 1));
labelPanel.setOpaque(false);
JButton button0 = createButton();
JButton button1 = createButton();
JButton button2 = createButton();
JButton button3 = createButton();
buttonPanel.setLayout(new GridLayout(0, 4, 4, 4));
buttonPanel.add(button0);
buttonPanel.add(button1);
buttonPanel.add(button2);
buttonPanel.add(button3);
//buttonPanel.setBorder(new LineBorder(Color.black, 1));
buttonPanel.setOpaque(false);
label.setLayout(new BorderLayout());
label.add(labelPanel, BorderLayout.NORTH);
label.add(buttonPanel, BorderLayout.SOUTH);
Dimension d = Toolkit.getDefaultToolkit().getScreenSize();
label.setPreferredSize(new Dimension(d.width / 3, d.height / 3));
add(label, BorderLayout.CENTER);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
pack();
setVisible(true);
startBackground();
startLabel2();
new Thread(this).start();
printWords(); // generating freeze Swing GUI durring EDT
}
private JButton createButton() {
JButton button = new JButton();
button.setBorderPainted(false);
button.setBorder(null);
button.setFocusable(false);
button.setMargin(new Insets(0, 0, 0, 0));
button.setContentAreaFilled(false);
button.setIcon(nextIcon());
button.setRolloverIcon(nextIcon());
button.setPressedIcon(nextIcon());
button.setDisabledIcon(nextIcon());
nextIcon();
return button;
}
private Icon nextIcon() {
Icon icon = iconQueue.peek();
iconQueue.add(iconQueue.remove());
return icon;
}
// Update background at 4/3 Hz
private void startBackground() {
backTtimer = new javax.swing.Timer(750, updateBackground());
backTtimer.start();
backTtimer.setRepeats(true);
}
private Action updateBackground() {
return new AbstractAction("Background action") {
private static final long serialVersionUID = 1L;
@Override
public void actionPerformed(ActionEvent e) {
label.setIcon(new ImageIcon(getImage()));
}
};
}
// Update Label two at 2 Hz
private void startLabel2() {
labelTimer = new javax.swing.Timer(500, updateLabel2());
labelTimer.start();
labelTimer.setRepeats(true);
}
private Action updateLabel2() {
return new AbstractAction("Label action") {
private static final long serialVersionUID = 1L;
@Override
public void actionPerformed(ActionEvent e) {
two.setText(petStrings[index]);
index = (index + 1) % petStrings.length;
}
};
}
// Update lable one at 3 Hz
@Override
public void run() {
while (runProcess) {
SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
one.setText(petStrings[index1]);
index1 = (index1 + 1) % petStrings.length;
}
});
try {
Thread.sleep(300);
} catch (Exception e) {
e.printStackTrace();
}
}
}
// Note: blocks EDT
private void printWords() {
for (int i = 0; i < petStrings.length; i++) {
String word = petStrings[i].toString();
System.out.println(word);
try {
Thread.sleep(100);
} catch (InterruptedException e) {
e.printStackTrace();
}
three.setText(word);
}
three.setText("<html> Concurency Issues in Swing<br>"
+ " never to use Thread.sleep(int) <br>"
+ " durring EDT, simple to freeze GUI </html>");
}
public BufferedImage getImage() {
int w = label.getWidth();
int h = label.getHeight();
GradientPaint gp = new GradientPaint(0f, 0f, new Color(
127 + random.nextInt(128),
127 + random.nextInt(128),
127 + random.nextInt(128)),
w, w,
new Color(random.nextInt(128), random.nextInt(128), random.nextInt(128)));
BufferedImage bi = new BufferedImage(w, h, BufferedImage.TYPE_INT_RGB);
Graphics2D g2d = bi.createGraphics();
g2d.setPaint(gp);
g2d.fillRect(0, 0, w, h);
g2d.setColor(Color.BLACK);
return bi;
}
}If you are using Windows...
At one point, Windows (I think XP and earlier) did NOT allow you to change the colour of the buttons. Only the text.
I don't know if Windows (Vista and W7) will allow you to change the colour of the buttons now.
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