Re: Programmatic resize flicker

public class JFrameFlicker extends JFrame {

private GrowBox fGrowBox = new GrowBox(this);

public JFrameFlicker() {

JPanel dummyPanel = new JPanel(new FlowLayout(FlowLayout.RIGHT,1,1));

dummyPanel.add(fGrowBox);

JPanel backgroundPanel = new JPanel(new BorderLayout());

backgroundPanel.setOpaque(false);

backgroundPanel.add(dummyPanel, BorderLayout.SOUTH);

getContentPane().add(dummyPanel, BorderLayout.SOUTH);

((JComponent)getContentPane()).setOpaque(false);

setUndecorated(true);

setBackground(new Color(0,0,0,100));

}

private static class GrowBox extends JLabel implements MouseListener, MouseMotionListener {

private Point fPressedPoint;

private int fStartWidth;

private int fStartHeight;

private Frame fFrame;

private GrowBox(Frame frame) {

super();

fFrame = frame;

addMouseListener(this);

addMouseMotionListener(this);

setOpaque(true);

setPreferredSize(new Dimension(12,12));

setBackground(Color.GRAY);

}

// MouseListener implementation. //////////////////////////////////////

public void mouseClicked(MouseEvent e) {

}

public void mousePressed(MouseEvent e) {

fPressedPoint = e.getPoint();

SwingUtilities.convertPointToScreen(fPressedPoint, this);

fStartWidth = fFrame.getWidth();

fStartHeight = fFrame.getHeight();

}

public void mouseReleased(MouseEvent e) {

}

public void mouseEntered(MouseEvent e) {

}

public void mouseExited(MouseEvent e) {

}

// MouseMotionListener implementation. ////////////////////////////////

public void mouseDragged(MouseEvent e) {

Point currentPoint = e.getPoint();

SwingUtilities.convertPointToScreen(currentPoint, this);

int width = fStartWidth - (fPressedPoint.x - currentPoint.x);

int height = fStartHeight - (fPressedPoint.y - currentPoint.y);

fFrame.setSize(width, height);

}

public void mouseMoved(MouseEvent e) {

}

public static void main(String[] args) {

JFrame jframe = new JFrameFlicker();

jframe.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

jframe.setSize(400,400);

jframe.setLocationRelativeTo(null);

jframe.setVisible(true);

}

On Sep 24, 2008, at 9:30 AM, Sergiy Michka wrote:

Does overriding update(Graphics g) + not calling super changes something (erase background will be not called then)?

2008/9/24 <email@hidden>

Great question.

I played with this for an hour or two just now with no success. I tried a variety of options: overriding paint() methods, touching the forbidden WindowPeer objects, playing with EventQueues and coalesceEvents(), etc. I learned a little bit here and there, but made no progress.

It appears that during the flicker the background color of the window will be used to fill the entire window without consulting a paint() method.

- Jeremy

On Sep 23, 2008, at 6:43 PM, Ken Orr wrote:

Is there any way to programmatically resize a Window via setSize without causing a horrendous looking flicker? Its impossible to create a custom window resize widget that reacts to mouseDragged events with the current state of affairs. If there is *any* way to do this, even with platform specific casting, I'm willing to do it. I'm hoping one of the Apple guys chimes in!

By the way, I know this issue has been brought up here, as far back as this message: http://lists.apple.com/archives/Java-dev/2006/Mar/msg00179.html

-Ken

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<ATT00001.txt>

References:
	>Programmatic resize flicker (From: Ken Orr <email@hidden>)
	>Re: Programmatic resize flicker (From: email@hidden)
	>Re: Programmatic resize flicker (From: "Sergiy Michka" <email@hidden>)