ImageButton

[Nir]

Hi all,

I have to use a awt.Button object within an applet, and I need to 'plant'
an image on top of it. I know there's an ImageButton in Swing, but I can't
use it since I'm restricted to 'NO DOWNLOADS' (which are needed of course
by swing components).
Does anyone has a solution ?

Thanx in advance,
Nir.

[Jacky]

Try to build your own ImageButton class which can inheritance from Canvas(heavyweight)
or Component(lightweight).
You can overload your constructor like:
class ImageButton extends Canvas implements MouseListener {

ImageButton( String label, Image image)...
ImageButton( Image image, String label )...
ImageButton( String label )...
ImageButton( Image image )...

You should also overwirte your paint method.
public void paint( Graphics g )
{
Dimension d = getSize();
g.setColor( Color.gray );
g.fillRect( 0, 0, d.width, d.height ) // background
g.setColor( Color.light );
g.drawline( 0, 0, d.width-1, 0 ); // upper border
g.drawline( 0, 1, 0, d.height ); // left border
g.setColor( Color.darkGray );
...... // draw another two lines as right and bottom borders
// you can also draw more light to get thicker borders
g.drawImage( image, /* x and y positions of image */, null );
...
}

You should also define the action for the ImageButton.
void mouseClicked(MouseEvent event)...
mousePressed....
mouseEnter....
...etc.



"Nir" <nir@effective-i.com> wrote:
>
>Hi all,
>
>I have to use a awt.Button object within an applet, and I need to 'plant'
>an image on top of it. I know there's an ImageButton in Swing, but I can't
>use it since I'm restricted to 'NO DOWNLOADS' (which are needed of course
>by swing components).
>Does anyone has a solution ?
>
>Thanx in advance,
>Nir.

[Cup 'o' Decafe]

Here you go:

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.table.*;

public class BackgroundTable
{
public static void main(String[] args) {
JFrame frame = new JFrame("Button Background Image");
frame.addWindowListener( new WindowAdapter() {
public void windowClosing(WindowEvent e)
{
Window w = e.getWindow();
w.setVisible(false);
w.dispose();
System.exit(0);
}
});

JTable imTable = new JTable(35, 3) {
public Component prepareRenderer(TableCellRenderer renderer, int
row, int column)
{
Component c = super.prepareRenderer( renderer, row, column);

// We want renderer component to be
//transparent so background image is visible
if( c instanceof JComponent )
((JComponent)c).setOpaque(false);
return c;
}

public void paint( Graphics g )
{
ImageIcon image = new ImageIcon("Yourimage.gif");
// tile the background image
Dimension d = getSize();
for( int x = 0; x < d.width; x += image.getIconWidth() )
for( int y = 0; y < d.height; y += image.getIconHeight() )
g.drawImage( image.getImage(), x, y, null, null );
// Now let the paint do its usual work
super.paint(g);
}
};

//make the table transparent
imTable.setOpaque(false);

JScrollPane jsp = new JScrollPane(imTable);
frame.getContentPane().add(jsp);

frame.pack();
frame.show();
}
}
"Nir" <nir@effective-i.com> wrote:
>
>Hi all,
>
>I have to use a awt.Button object within an applet, and I need to 'plant'
>an image on top of it. I know there's an ImageButton in Swing, but I can't
>use it since I'm restricted to 'NO DOWNLOADS' (which are needed of course
>by swing components).
>Does anyone has a solution ?
>
>Thanx in advance,
>Nir.