/*
 * 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.experimental.components;

import javax.swing.JComponent;
import java.awt.AlphaComposite;
import java.awt.BorderLayout;
import java.awt.Graphics;
import java.awt.Graphics2D;

/**
 */
public class ThermostatComponent extends JComponent {

    private double opacity;

    public ThermostatComponent() {
        setLayout(new BorderLayout());
        setOpaque(false);
        opacity = 1.0;
    }

    public double getOpacity() {
        return opacity;
    }

    public void setOpacity(double opacity) {
        this.opacity = opacity;
        repaint();
    }

    @Override
    protected final void paintComponent(Graphics g) {
        Graphics2D graphics = (Graphics2D) g.create();

        AlphaComposite composite = AlphaComposite.getInstance(
                AlphaComposite.SRC_OVER, (float) opacity);
        graphics.setComposite(composite);

        super.paintComponent(graphics);
        paintComponent(graphics);

        graphics.dispose();
    }

    protected void paintComponent(Graphics2D graphics) {

    }
}