1/*
2 * Copyright (c) 1997, 2014, 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.plaf.basic;
27
28import javax.swing.*;
29import javax.swing.plaf.UIResource;
30
31import java.awt.Graphics;
32import java.awt.Color;
33import java.awt.Component;
34import java.awt.Polygon;
35import java.io.Serializable;
36
37/**
38 * Factory object that can vend Icons appropriate for the basic L & F.
39 * <p>
40 * <strong>Warning:</strong>
41 * Serialized objects of this class will not be compatible with
42 * future Swing releases. The current serialization support is
43 * appropriate for short term storage or RMI between applications running
44 * the same version of Swing.  As of 1.4, support for long term storage
45 * of all JavaBeans&trade;
46 * has been added to the <code>java.beans</code> package.
47 * Please see {@link java.beans.XMLEncoder}.
48 *
49 * @author David Kloba
50 * @author Georges Saab
51 */
52@SuppressWarnings("serial") // Same-version serialization only
53public class BasicIconFactory implements Serializable
54{
55    private static Icon frame_icon;
56    private static Icon checkBoxIcon;
57    private static Icon radioButtonIcon;
58    private static Icon checkBoxMenuItemIcon;
59    private static Icon radioButtonMenuItemIcon;
60    private static Icon menuItemCheckIcon;
61    private static Icon menuItemArrowIcon;
62    private static Icon menuArrowIcon;
63
64    /**
65     * Returns a menu item check icon.
66     *
67     * @return a menu item check icon
68     */
69    public static Icon getMenuItemCheckIcon() {
70        if (menuItemCheckIcon == null) {
71            menuItemCheckIcon = new MenuItemCheckIcon();
72        }
73        return menuItemCheckIcon;
74    }
75
76    /**
77     * Returns a menu item arrow icon.
78     *
79     * @return a menu item arrow icon
80     */
81    public static Icon getMenuItemArrowIcon() {
82        if (menuItemArrowIcon == null) {
83            menuItemArrowIcon = new MenuItemArrowIcon();
84        }
85        return menuItemArrowIcon;
86    }
87
88    /**
89     * Returns a menu arrow icon.
90     *
91     * @return a menu arrow icon
92     */
93    public static Icon getMenuArrowIcon() {
94        if (menuArrowIcon == null) {
95            menuArrowIcon = new MenuArrowIcon();
96        }
97        return menuArrowIcon;
98    }
99
100    /**
101     * Returns a check box icon.
102     *
103     * @return a check box icon
104     */
105    public static Icon getCheckBoxIcon() {
106        if (checkBoxIcon == null) {
107            checkBoxIcon = new CheckBoxIcon();
108        }
109        return checkBoxIcon;
110    }
111
112    /**
113     * Returns a radio button icon.
114     *
115     * @return a radio button icon
116     */
117    public static Icon getRadioButtonIcon() {
118        if (radioButtonIcon == null) {
119            radioButtonIcon = new RadioButtonIcon();
120        }
121        return radioButtonIcon;
122    }
123
124    /**
125     * Returns a check box menu item icon.
126     *
127     * @return a check box menu item icon
128     */
129    public static Icon getCheckBoxMenuItemIcon() {
130        if (checkBoxMenuItemIcon == null) {
131            checkBoxMenuItemIcon = new CheckBoxMenuItemIcon();
132        }
133        return checkBoxMenuItemIcon;
134    }
135
136    /**
137     * Returns a radio button menu item icon.
138     *
139     * @return a radio button menu item icon
140     */
141    public static Icon getRadioButtonMenuItemIcon() {
142        if (radioButtonMenuItemIcon == null) {
143            radioButtonMenuItemIcon = new RadioButtonMenuItemIcon();
144        }
145        return radioButtonMenuItemIcon;
146    }
147
148    /**
149     * Returns an empty frame icon.
150     *
151     * @return an empty frame icon
152     */
153    public static Icon createEmptyFrameIcon() {
154        if(frame_icon == null)
155            frame_icon = new EmptyFrameIcon();
156        return frame_icon;
157    }
158
159    private static class EmptyFrameIcon implements Icon, Serializable {
160        int height = 16;
161        int width = 14;
162        public void paintIcon(Component c, Graphics g, int x, int y) {
163        }
164        public int getIconWidth() { return width; }
165        public int getIconHeight() { return height; }
166    };
167
168    private static class CheckBoxIcon implements Icon, Serializable
169    {
170        static final int csize = 13;
171        public void paintIcon(Component c, Graphics g, int x, int y) {
172        }
173
174        public int getIconWidth() {
175            return csize;
176        }
177
178        public int getIconHeight() {
179            return csize;
180        }
181    }
182
183    private static class RadioButtonIcon implements Icon, UIResource, Serializable
184    {
185        public void paintIcon(Component c, Graphics g, int x, int y) {
186        }
187
188        public int getIconWidth() {
189            return 13;
190        }
191
192        public int getIconHeight() {
193            return 13;
194        }
195    } // end class RadioButtonIcon
196
197
198    private static class CheckBoxMenuItemIcon implements Icon, UIResource, Serializable
199    {
200        public void paintIcon(Component c, Graphics g, int x, int y) {
201            AbstractButton b = (AbstractButton) c;
202            ButtonModel model = b.getModel();
203            boolean isSelected = model.isSelected();
204            if (isSelected) {
205                g.drawLine(x+7, y+1, x+7, y+3);
206                g.drawLine(x+6, y+2, x+6, y+4);
207                g.drawLine(x+5, y+3, x+5, y+5);
208                g.drawLine(x+4, y+4, x+4, y+6);
209                g.drawLine(x+3, y+5, x+3, y+7);
210                g.drawLine(x+2, y+4, x+2, y+6);
211                g.drawLine(x+1, y+3, x+1, y+5);
212            }
213        }
214        public int getIconWidth() { return 9; }
215        public int getIconHeight() { return 9; }
216
217    } // End class CheckBoxMenuItemIcon
218
219
220    private static class RadioButtonMenuItemIcon implements Icon, UIResource, Serializable
221    {
222        public void paintIcon(Component c, Graphics g, int x, int y) {
223            AbstractButton b = (AbstractButton) c;
224            ButtonModel model = b.getModel();
225            if (b.isSelected() == true) {
226                g.fillOval(x+1, y+1, getIconWidth(), getIconHeight());
227            }
228        }
229        public int getIconWidth() { return 6; }
230        public int getIconHeight() { return 6; }
231
232    } // End class RadioButtonMenuItemIcon
233
234
235    private static class MenuItemCheckIcon implements Icon, UIResource, Serializable{
236        public void paintIcon(Component c, Graphics g, int x, int y) {
237        }
238        public int getIconWidth() { return 9; }
239        public int getIconHeight() { return 9; }
240
241    } // End class MenuItemCheckIcon
242
243    private static class MenuItemArrowIcon implements Icon, UIResource, Serializable {
244        public void paintIcon(Component c, Graphics g, int x, int y) {
245        }
246        public int getIconWidth() { return 4; }
247        public int getIconHeight() { return 8; }
248
249    } // End class MenuItemArrowIcon
250
251    private static class MenuArrowIcon implements Icon, UIResource, Serializable {
252        public void paintIcon(Component c, Graphics g, int x, int y) {
253            Polygon p = new Polygon();
254            p.addPoint(x, y);
255            p.addPoint(x+getIconWidth(), y+getIconHeight()/2);
256            p.addPoint(x, y+getIconHeight());
257            g.fillPolygon(p);
258
259        }
260        public int getIconWidth() { return 4; }
261        public int getIconHeight() { return 8; }
262    } // End class MenuArrowIcon
263}
264