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The source code

/*
 *                 Sun Public License Notice
 *
 * The contents of this file are subject to the Sun Public License
 * Version 1.0 (the "License"). You may not use this file except in
 * compliance with the License. A copy of the License is available at
 * http://www.sun.com/
 *
 * The Original Code is NetBeans. The Initial Developer of the Original
 * Code is Sun Microsystems, Inc. Portions Copyright 1997-2003 Sun
 * Microsystems, Inc. All Rights Reserved.
 */
/*
 * TabPainter.java
 *
 * Created on December 3, 2003, 4:22 PM
 */

package org.netbeans.swing.tabcontrol.plaf;

import javax.swing.*;
import javax.swing.border.Border;
import java.awt.*;

/**
 * An extention to Border which can provide a non-rectangular interior region
 * that will contain the tab's content, and actually paint that interior. The
 * goal of this class is to make it extremely easy to plug in different painting
 * logic without having to write an entire UI delegate.
 *
 * @author Tim Boudreau
 */
public interface TabPainter extends Border {

    /**
     * Get the polygon representing the tag.  Clicks outside this polygon inside
     * the tab's rectangle will be ignored. This polygon makes up the bounds of
     * the tab. 

AbstractTabsUI contains generic support for * drawing drag and drop target indications. If want to use it rather than * write your own, you need to specify the polygon returned by this method * with the following point order: The last two points in the point array * of the polygon must be the bottom left corner, followed by the * bottom right corner. In other words, start at the upper left * corner when constructing the polygon, and end at the bottom right corner, * using no more than one point for the bottom left and right corners: *

     * start here -->    /---------
     *                            |
     * finish here -->   ----------
     * 
*/ Polygon getInteriorPolygon(Component renderer); /** * Paint the interior (as defined by getInteriorPolygon()) as appropriate * for the tab. Implementations will presumably use different colors to * manage selection, activated state, etc. */ void paintInterior(Graphics g, Component renderer); /** * Get the close button rectangle for this tab. May return null if * supportsCloseButton() returns null. * * @param jc The current renderer * @param rect A rectangle that should be configured with the close button * bounds * @param bounds The bounds relative to which the close button rectangle * should be determined */ void getCloseButtonRectangle(JComponent jc, Rectangle rect, Rectangle bounds); boolean supportsCloseButton(JComponent renderer); }
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