1 /*
2
3 dsh-iconbundle Bundles of variants for icon images.
4 Copyright (c) 2003-2013 held jointly by the individual authors.
5
6 This library is free software; you can redistribute it and/or modify it
7 under the terms of the GNU Lesser General Public License as published
8 by the Free Software Foundation; either version 3 of the License, or (at
9 your option) any later version.
10
11 This library is distributed in the hope that it will be useful, but WITHOUT
12 ANY WARRANTY; with out even the implied warranty of MERCHANTABILITY or
13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
14 License for more details.
15
16 You should have received a copy of the GNU Lesser General Public License
17 along with this library; if not, write to the Free Software Foundation,
18 Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
19
20 > http://www.fsf.org/licensing/licenses/lgpl.html
21 > http://www.opensource.org/licenses/lgpl-license.php
22
23 */
24 package org.dishevelled.iconbundle.impl;
25
26 import java.awt.Color;
27
28 import java.awt.image.Raster;
29 import java.awt.image.WritableRaster;
30
31 /**
32 * Selection RasterOp.
33 *
34 * @author Michael Heuer
35 */
36 final class SelectionRasterOp
37 extends AbstractRasterOp
38 {
39 /** Pixel array size. */
40 private static final int PIXEL_ARRAY_SIZE = 4;
41
42 /** White color component. */
43 private static final int WHITE = 255;
44
45 /** Selection color. */
46 private final Color selectionColor;
47
48
49 /**
50 * Create a new selection RasterOp with the specified
51 * selection color.
52 *
53 * @param selectionColor selection color
54 */
55 public SelectionRasterOp(final Color selectionColor)
56 {
57 this.selectionColor = selectionColor;
58 }
59
60
61 /** {@inheritDoc} */
62 public WritableRaster filter(final Raster src, final WritableRaster dest)
63 {
64 if (selectionColor != null)
65 {
66 float[] pixel = new float[PIXEL_ARRAY_SIZE];
67 float[] selection = selectionColor.getColorComponents(new float[PIXEL_ARRAY_SIZE]);
68
69 for (int x = 0, w = src.getWidth(); x < w; x++)
70 {
71 for (int y = 0, h = src.getHeight(); y < h; y++)
72 {
73 pixel = src.getPixel(x, y, pixel);
74 pixel[0] = Math.min(pixel[0], selection[0] * WHITE);
75 pixel[1] = Math.min(pixel[1], selection[1] * WHITE);
76 pixel[2] = Math.min(pixel[2], selection[2] * WHITE);
77
78 dest.setPixel(x, y, pixel);
79 }
80 }
81 }
82 return dest;
83 }
84 }