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package javax.swing.colorchooser;
import java.awt.*;
import java.io.*;
Center-positioning layout manager.
Author: Tom Santos, Steve Wilson
/**
* Center-positioning layout manager.
* @author Tom Santos
* @author Steve Wilson
*/
@SuppressWarnings("serial") // Same-version serialization only
class CenterLayout implements LayoutManager, Serializable {
public void addLayoutComponent(String name, Component comp) { }
public void removeLayoutComponent(Component comp) { }
public Dimension preferredLayoutSize( Container container ) {
Component c = container.getComponent( 0 );
if ( c != null ) {
Dimension size = c.getPreferredSize();
Insets insets = container.getInsets();
size.width += insets.left + insets.right;
size.height += insets.top + insets.bottom;
return size;
}
else {
return new Dimension( 0, 0 );
}
}
public Dimension minimumLayoutSize(Container cont) {
return preferredLayoutSize(cont);
}
public void layoutContainer(Container container) {
try {
Component c = container.getComponent( 0 );
c.setSize( c.getPreferredSize() );
Dimension size = c.getSize();
Dimension containerSize = container.getSize();
Insets containerInsets = container.getInsets();
containerSize.width -= containerInsets.left + containerInsets.right;
containerSize.height -= containerInsets.top + containerInsets.bottom;
int componentLeft = (containerSize.width / 2) - (size.width / 2);
int componentTop = (containerSize.height / 2) - (size.height / 2);
componentLeft += containerInsets.left;
componentTop += containerInsets.top;
c.setBounds( componentLeft, componentTop, size.width, size.height );
}
catch( Exception e ) {
}
}
}