jdk/src/solaris/classes/sun/awt/X11/XRepaintArea.java

/*
 * Copyright 2003 Sun Microsystems, Inc.  All Rights Reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Sun designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Sun in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
 * CA 95054 USA or visit www.sun.com if you need additional information or
 * have any questions.
 */


package sun.awt.X11;

import java.awt.Component;
import java.awt.Graphics;
import sun.awt.RepaintArea;
import java.awt.peer.ComponentPeer;

/**
 * The <code>RepaintArea</code> is a geometric construct created for the
 * purpose of holding the geometry of several coalesced paint events.
 * This geometry is accessed synchronously, although it is written such
 * that painting may still be executed asynchronously.
 *
 * @author      Eric Hawkes
 */
class XRepaintArea extends RepaintArea {

    /**
     * Constructs a new <code>XRepaintArea</code>
     * @since   1.3
     */
    public XRepaintArea() {
    }

    /**
     * Calls <code>Component.update(Graphics)</code> with given Graphics.
     */
    protected void updateComponent(Component comp, Graphics g) {
        if (comp != null) {
            ComponentPeer peer = comp.getPeer();
            if (peer != null) {
                peer.paint(g);
            }
            super.updateComponent(comp, g);
        }
    }

    /**
     * Calls <code>Component.paint(Graphics)</code> with given Graphics.
     */
    protected void paintComponent(Component comp, Graphics g) {
        if (comp != null) {
            ComponentPeer peer = comp.getPeer();
            if (peer != null) {
                peer.paint(g);
            }
            super.paintComponent(comp, g);
        }
    }
}