/*
 * Copyright 2012-2017 Red Hat, Inc.
 *
 * This file is part of Thermostat.
 *
 * Thermostat is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published
 * by the Free Software Foundation; either version 2, or (at your
 * option) any later version.
 *
 * Thermostat 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 for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Thermostat; see the file COPYING.  If not see
 * <http://www.gnu.org/licenses/>.
 *
 * Linking this code with other modules is making a combined work
 * based on this code.  Thus, the terms and conditions of the GNU
 * General Public License cover the whole combination.
 *
 * As a special exception, the copyright holders of this code give
 * you permission to link this code with independent modules to
 * produce an executable, regardless of the license terms of these
 * independent modules, and to copy and distribute the resulting
 * executable under terms of your choice, provided that you also
 * meet, for each linked independent module, the terms and conditions
 * of the license of that module.  An independent module is a module
 * which is not derived from or based on this code.  If you modify
 * this code, you may extend this exception to your version of the
 * library, but you are not obligated to do so.  If you do not wish
 * to do so, delete this exception statement from your version.
 */

package com.redhat.thermostat.internal.utils.laf;

import javax.swing.JComponent;
import javax.swing.RepaintManager;
import java.awt.Container;

/**
 */
public class ThermostatRepaintManager extends RepaintManager {
    @Override
    public void addDirtyRegion(JComponent c, int x, int y, int w, int h) {

        // we search the highest common ancestor who can overlap
        // children and repaint that
        JComponent topLevel = null;
        Container parent = c.getParent();

        while (parent instanceof JComponent) {
            if (!parent.isVisible()) {
                return;
            }

            if (!((JComponent) parent).isOptimizedDrawingEnabled()) {
                topLevel = (JComponent) parent;
            }

            parent = parent.getParent();
        }

        if (topLevel == null) {
            super.addDirtyRegion(c, x, y, w, h);

        } else {
            super.addDirtyRegion(topLevel, 0, 0, topLevel.getWidth(), topLevel.getHeight());
        }
    }
}