Uses translucent shades of white and black to draw highlights and shadows around a rectangle, and then frames the rectangle with a shade of gray (120). - Java 2D Graphics

Java examples for 2D Graphics:Rectangle

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Description

Uses translucent shades of white and black to draw highlights and shadows around a rectangle, and then frames the rectangle with a shade of gray (120).

Demo Code

/*// w  ww  .  j  a  v  a 2s.com
 * @(#)PaintUtils.java  1.0  2008-03-01
 *
 * Copyright (c) 2008 Jeremy Wood
 * E-mail: mickleness@gmail.com
 * All rights reserved.
 *
 * The copyright of this software is owned by Jeremy Wood.
 * You may not use, copy or modify this software, except in
 * accordance with the license agreement you entered into with
 * Jeremy Wood. For details see accompanying license terms.
 */
//package com.java2s;
import java.awt.*;
import javax.swing.*;

public class Main {
    /** Four shades of white, each with increasing opacity. */
    public final static Color[] whites = new Color[] {
            new Color(255, 255, 255, 50), new Color(255, 255, 255, 100),
            new Color(255, 255, 255, 150) };
    /** Four shades of black, each with increasing opacity. */
    public final static Color[] blacks = new Color[] {
            new Color(0, 0, 0, 50), new Color(0, 0, 0, 100),
            new Color(0, 0, 0, 150) };

    /** Uses translucent shades of white and black to draw highlights
     * and shadows around a rectangle, and then frames the rectangle
     * with a shade of gray (120).
     * <P>This should be called to add a finishing touch on top of
     * existing graphics.
     * @param g the graphics to paint to.
     * @param r the rectangle to paint.
     */
    public static void drawBevel(Graphics g, Rectangle r) {
        drawColors(blacks, g, r.x, r.y + r.height, r.x + r.width, r.y
                + r.height, SwingConstants.SOUTH);
        drawColors(blacks, g, r.x + r.width, r.y, r.x + r.width, r.y
                + r.height, SwingConstants.EAST);

        drawColors(whites, g, r.x, r.y, r.x + r.width, r.y,
                SwingConstants.NORTH);
        drawColors(whites, g, r.x, r.y, r.x, r.y + r.height,
                SwingConstants.WEST);

        g.setColor(new Color(120, 120, 120));
        g.drawRect(r.x, r.y, r.width, r.height);
    }

    private static void drawColors(Color[] colors, Graphics g, int x1,
            int y1, int x2, int y2, int direction) {
        for (int a = 0; a < colors.length; a++) {
            g.setColor(colors[colors.length - a - 1]);
            if (direction == SwingConstants.SOUTH) {
                g.drawLine(x1, y1 - a, x2, y2 - a);
            } else if (direction == SwingConstants.NORTH) {
                g.drawLine(x1, y1 + a, x2, y2 + a);
            } else if (direction == SwingConstants.EAST) {
                g.drawLine(x1 - a, y1, x2 - a, y2);
            } else if (direction == SwingConstants.WEST) {
                g.drawLine(x1 + a, y1, x2 + a, y2);
            }
        }
    }
}

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