1/*
2 * Copyright (c) 2008, 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
26package javax.swing.colorchooser;
27
28import java.awt.Component;
29import javax.swing.UIManager;
30
31class ColorModel {
32
33    private final String prefix;
34    private final String[] labels;
35
36    ColorModel(String name, String... labels) {
37        this.prefix = "ColorChooser." + name; // NON-NLS: default prefix
38        this.labels = labels;
39    }
40
41    ColorModel() {
42        this("rgb", "Red", "Green", "Blue", "Alpha"); // NON-NLS: components
43    }
44
45    void setColor(int color, float[] model) {
46        model[0] = normalize(color >> 16);
47        model[1] = normalize(color >> 8);
48        model[2] = normalize(color);
49        model[3] = normalize(color >> 24);
50    }
51
52    int getColor(float[] model) {
53        return to8bit(model[2]) | (to8bit(model[1]) << 8) | (to8bit(model[0]) << 16) | (to8bit(model[3]) << 24);
54    }
55
56    int getCount() {
57        return this.labels.length;
58    }
59
60    int getMinimum(int index) {
61        return 0;
62    }
63
64    int getMaximum(int index) {
65        return 255;
66    }
67
68    float getDefault(int index) {
69        return 0.0f;
70    }
71
72    final String getLabel(Component component, int index) {
73        return getText(component, this.labels[index]);
74    }
75
76    private static float normalize(int value) {
77        return (float) (value & 0xFF) / 255.0f;
78    }
79
80    private static int to8bit(float value) {
81        return (int) (255.0f * value);
82    }
83
84    final String getText(Component component, String suffix) {
85        return UIManager.getString(this.prefix + suffix + "Text", component.getLocale()); // NON-NLS: default postfix
86    }
87
88    final int getInteger(Component component, String suffix) {
89        Object value = UIManager.get(this.prefix + suffix, component.getLocale());
90        if (value instanceof Integer) {
91            return (Integer) value;
92        }
93        if (value instanceof String) {
94            try {
95                return Integer.parseInt((String) value);
96            }
97            catch (NumberFormatException exception) {
98            }
99        }
100        return -1;
101    }
102}
103