1 /*

     2  * Copyright (c) 2007, 2016, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.

     8  *

     9  * This code is distributed in the hope that it will be useful, but WITHOUT

    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    12  * version 2 for more details (a copy is included in the LICENSE file that

    13  * accompanied this code).

    14  *

    15  * You should have received a copy of the GNU General Public License version

    16  * 2 along with this work; if not, write to the Free Software Foundation,

    17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    18  *

    19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    20  * or visit www.oracle.com if you need additional information or have any

    21  * questions.

    22  */

    23 package com.sun.swingset3.demos.spinner;

    24 

    25 import javax.swing.*;

    26 import java.awt.*;

    27 

    28 /**

    29  * @author Mikhail Lapshin

    30  */

    31 public class JPaletteShower extends JComponent {

    32 

    33     private Palette palette;

    34 

    35     public JPaletteShower(Palette palette, int width, int height) {

    36         setPreferredSize(new Dimension(width, height));

    37         setMinimumSize(new Dimension(width, height));

    38         this.palette = palette;

    39     }

    40 

    41     @Override

    42     protected void paintComponent(Graphics g) {

    43         super.paintComponent(g);

    44         int w = getSize().width;

    45         int h = getSize().height;

    46         int maxIndex = palette.getSize() - 1;

    47         double rate = (double) maxIndex / w;

    48         for (int x = 0; x < w; x++) {

    49             g.setColor(palette.getColor((int) (x * rate)));

    50             g.fillRect(x, 0, 1, h);

    51         }

    52     }

    53 

    54     public Palette getPalette() {

    55         return palette;

    56     }

    57 

    58     public void setPalette(Palette palette) {

    59         this.palette = palette;

    60         repaint();

    61     }

    62 }