/**
 * File: Landscape.java
 * Author: Brian Borowski
 * Date created: August 1, 2011
 * Date last modified: January 21, 2013
 */
import java.awt.Color;
import java.awt.GradientPaint;
import java.awt.Graphics;
import java.awt.Graphics2D;

import javax.swing.JPanel;

public class Landscape {
    private static final int DEFAULT_HEIGHT = 40;
    private static final Color
        DARK_GREEN = new Color(0, 50, 0),
        GREEN = new Color(0, 100, 0);

    private final JPanel parent;
    private GradientPaint gradientPaint = null;

    public Landscape(final JPanel parent) {
        this.parent = parent;
    }

    public int getHeight() {
        return DEFAULT_HEIGHT;
    }

    public void paintComponent(final Graphics g) {
        final Graphics2D g2d = (Graphics2D)g;
        final int height = parent.getHeight(), width = parent.getWidth();
        if (gradientPaint == null) {
            gradientPaint =
                new GradientPaint(0, height - DEFAULT_HEIGHT, DARK_GREEN,
                                  0, height, GREEN);
        }
        g2d.setPaint(gradientPaint);
        g2d.fillRect(0, height - DEFAULT_HEIGHT, width, height);
    }
}