Hi,
I have a problem in repainting in a JPanel.
Situation:
I have a ButPanel which extends JPanel.
In this panel I draw some sequences with some text along with it, by overriding paint() method.
Eventually the screen size exceeds as input increases
I use a CompareFrame which extends JFrame.
I've added a JScrollPane named ResultPanel.
In some event I do setViewPort of ResultPanel to ButPanel.
So what i do here is, I keep counting the width and height size of ButPanel and i update the ButPanel by calling, setSize(width,height) inside paint() method.
But when the output becomes scrollable. The Graphics in ButPanel distorts or dithers over draws and etc, when I minimize and maximize, it automatically redraws[Of course repaint() is called when component minimize and maximize].
So In order to avoid the problem I add AdjustmentListener to both scrollbars of ResultPane in which I call ButPanel's repaint() from adjustmentValueChanged().
And still the problem never solved. I've attached a snapshot of my problem and the code.
please help me with a solution.
Thanks in advance,
Gokul Rangarajan
--Abstract Code Here--
public class CompareFrame extends javax.swing.JFrame {
/** Creates new form CompareFrame */
public CompareFrame() {
initComponents();
Dimension screen = Toolkit.getDefaultToolkit().getScreenSize();
setPreferredSize(new Dimension(screen.width, screen.height - 60));
setSize(screen.width, screen.height - 60);
BP = new ButPanel2(this);
ResultPane.getHorizontalScrollBar().addAdjustmentListener(new AdjustmentListener() {
public void adjustmentValueChanged(AdjustmentEvent ae) {
BP.repaint();
BP.validate();
}
});
ResultPane.getVerticalScrollBar().addAdjustmentListener(new AdjustmentListener() {
public void adjustmentValueChanged(AdjustmentEvent ae) {
BP.repaint();
BP.validate();
}
});
//Other constructor code
}
//Other code
}
class ButPanel2 extends javax.swing.JPanel {
public ButPanel2(CompareFrame parent) {
setLayout(new FlowLayout());
sizeX = 900;
sizeY = 600;
setPreferredSize(new Dimension(sizeX, sizeY));
setSize(sizeX, sizeY);
this.parent = parent;
}
@Override
public void paint(Graphics G) {
int i = 0, x = 1, y = 12;
G.setColor(Color.red);
int tX;
tX = 5;
G.setFont(new Font("Nimbus Roman No9 L", Font.PLAIN, 14));
//SOme more code...
.
.
}
//Some more code...
}
Kindly see the attachment. It is the snapshot of my problem
