/*

 * Copyright (c) 2003, 2015, Oracle and/or its affiliates. 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.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.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.AWTAccessor;

import sun.awt.RepaintArea;

/**

 * The {@code RepaintArea} 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

 */

final class XRepaintArea extends RepaintArea {

    /**

     * Calls {@code Component.update(Graphics)} with given Graphics.

     */

    protected void updateComponent(Component comp, Graphics g) {

        if (comp != null) {

            // We don't call peer.paintPeer() here, because we shouldn't paint

            // native component when processing UPDATE events.

            super.updateComponent(comp, g);

        }

    }

    /**

     * Calls {@code Component.paint(Graphics)} with given Graphics.

     */

    protected void paintComponent(Component comp, Graphics g) {

        if (comp != null) {

            final XComponentPeer peer = AWTAccessor.getComponentAccessor()

                                                   .getPeer(comp);

            if (peer != null) {

                peer.paintPeer(g);

            }

            super.paintComponent(comp, g);

        }

    }

}