1 /*
2 * Copyright (c) 2010, 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. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 package sun.java2d.xr;
27
28 import java.awt.*;
29
30 /**
31 * XRender color class.
32 *
33 * @author Clemens Eisserer
34 */
35
36 public class XRColor {
37 public static final XRColor FULL_ALPHA = new XRColor(0xffff, 0, 0, 0);
38 public static final XRColor NO_ALPHA = new XRColor(0, 0, 0, 0);
39
40 int red, green, blue, alpha;
41
42 public XRColor() {
43 red = 0;
44 green = 0;
45 blue = 0;
46 alpha = 0;
47 }
48
49 public XRColor(int alpha, int red, int green, int blue) {
50 this.alpha = alpha;
51 this.red = red;
52 this.green = green;
53 this.blue = blue;
54 }
55
56 public XRColor(Color color) {
57 setColorValues(color);
58 }
59
60 public void setColorValues(Color color) {
61 alpha = byteToXRColorValue(color.getAlpha());
62
63 red = byteToXRColorValue(
64 (int)(color.getRed() * color.getAlpha() / 255.0));
65 green = byteToXRColorValue(
66 (int)(color.getGreen() * color.getAlpha() / 255.0));
67 blue = byteToXRColorValue(
68 (int)(color.getBlue() * color.getAlpha() / 255.0));
69 }
70
71 public static int[] ARGBPrePixelToXRColors(int[] pixels) {
72 int[] colorValues = new int[pixels.length * 4];
73 XRColor c = new XRColor();
74
75 for (int i = 0; i < pixels.length; i++) {
76 c.setColorValues(pixels[i], true);
77 colorValues[i * 4 + 0] = c.alpha;
78 colorValues[i * 4 + 1] = c.red;
79 colorValues[i * 4 + 2] = c.green;
80 colorValues[i * 4 + 3] = c.blue;
81 }
82
83 return colorValues;
84 }
85
86 public void setColorValues(int pixel, boolean pre) {
87 long pix = XRUtils.intToULong(pixel);
88 alpha = (int) (((pix & 0xFF000000) >> 16) + 255);
89 red = (int) (((pix & 0x00FF0000) >> 8) + 255);
90 green = (int) (((pix & 0x0000FF00) >> 0) + 255);
91 blue = (int) (((pix & 0x000000FF) << 8) + 255);
92
93 if (alpha == 255) {
94 alpha = 0;
95 }
96
97 if (!pre) {
98 double alphaMult = XRUtils.XFixedToDouble(alpha);
99 this.red = (int) (red * alphaMult);
100 this.green = (int) (green * alphaMult);
101 this.blue = (int) (blue * alphaMult);
102 }
103 }
104
105 public static int byteToXRColorValue(int byteValue) {
106 int xrValue = 0;
107
108 if (byteValue != 0) {
109 if (byteValue == 255) {
110 xrValue = 0xffff;
111 } else {
112 xrValue = ((byteValue << 8) + 255);
113 }
114 }
115
116 return xrValue;
117 }
118
119 public String toString(){
120 return "A:"+alpha+" R:"+red+" G:"+green+" B:"+blue;
121 }
122
123 public void setAlpha(int alpha) {
124 this.alpha = alpha;
125 }
126
127 public int getAlpha() {
128 return alpha;
129 }
130
131 public int getRed() {
132 return red;
133 }
134
135 public int getGreen() {
136 return green;
137 }
138
139 public int getBlue() {
140 return blue;
141 }
142 }