001 /* BasicIconFactory.java --
002 Copyright (C) 2002, 2004, 2005 Free Software Foundation, Inc.
003
004 This file is part of GNU Classpath.
005
006 GNU Classpath is free software; you can redistribute it and/or modify
007 it under the terms of the GNU General Public License as published by
008 the Free Software Foundation; either version 2, or (at your option)
009 any later version.
010
011 GNU Classpath is distributed in the hope that it will be useful, but
012 WITHOUT ANY WARRANTY; without even the implied warranty of
013 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
014 General Public License for more details.
015
016 You should have received a copy of the GNU General Public License
017 along with GNU Classpath; see the file COPYING. If not, write to the
018 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
019 02110-1301 USA.
020
021 Linking this library statically or dynamically with other modules is
022 making a combined work based on this library. Thus, the terms and
023 conditions of the GNU General Public License cover the whole
024 combination.
025
026 As a special exception, the copyright holders of this library give you
027 permission to link this library with independent modules to produce an
028 executable, regardless of the license terms of these independent
029 modules, and to copy and distribute the resulting executable under
030 terms of your choice, provided that you also meet, for each linked
031 independent module, the terms and conditions of the license of that
032 module. An independent module is a module which is not derived from
033 or based on this library. If you modify this library, you may extend
034 this exception to your version of the library, but you are not
035 obligated to do so. If you do not wish to do so, delete this
036 exception statement from your version. */
037
038
039 package javax.swing.plaf.basic;
040
041 import java.awt.Color;
042 import java.awt.Component;
043 import java.awt.Graphics;
044 import java.io.Serializable;
045
046 import javax.swing.Icon;
047 import javax.swing.JCheckBoxMenuItem;
048
049 /**
050 * Creates icons for the {@link BasicLookAndFeel}.
051 */
052 public class BasicIconFactory implements Serializable
053 {
054 static final long serialVersionUID = 5605588811185324383L;
055
056 private static class DummyIcon
057 implements Icon
058 {
059 public int getIconHeight()
060 {
061 return 10;
062 }
063 public int getIconWidth()
064 {
065 return 10;
066 }
067 public void paintIcon(Component c, Graphics g, int x, int y)
068 {
069 Color save = g.getColor();
070 g.setColor(c.getForeground());
071 g.drawRect(x, y, 10, 10);
072 g.setColor(save);
073 }
074 }
075
076 /**
077 * The icon used for CheckBoxes in the BasicLookAndFeel. This is an empty
078 * icon with a size of 13x13 pixels.
079 */
080 static class CheckBoxIcon
081 implements Icon
082 {
083 /**
084 * Returns the height of the icon. The BasicLookAndFeel CheckBox icon
085 * has a height of 13 pixels.
086 *
087 * @return the height of the icon
088 */
089 public int getIconHeight()
090 {
091 return 13;
092 }
093
094 /**
095 * Returns the width of the icon. The BasicLookAndFeel CheckBox icon
096 * has a width of 13 pixels.
097 *
098 * @return the height of the icon
099 */
100 public int getIconWidth()
101 {
102 return 13;
103 }
104
105 /**
106 * Paints the icon. The BasicLookAndFeel CheckBox icon is empty and does
107 * not need to be painted.
108 *
109 * @param c the component to be painted
110 * @param g the Graphics context to be painted with
111 * @param x the x position of the icon
112 * @param y the y position of the icon
113 */
114 public void paintIcon(Component c, Graphics g, int x, int y)
115 {
116 // The icon is empty and needs no painting.
117 }
118 }
119
120 /**
121 * The icon used for {@link JCheckBoxMenuItem}s in the
122 * {@link BasicLookAndFeel}. This icon has a size of 9x9 pixels.
123 */
124 static class CheckBoxMenuItemIcon
125 implements Icon
126 {
127 /**
128 * Returns the height of the icon in pixels.
129 *
130 * @return the height of the icon
131 */
132 public int getIconHeight()
133 {
134 return 9;
135 }
136
137 /**
138 * Returns the width of the icon in pixels.
139 *
140 * @return the height of the icon
141 */
142 public int getIconWidth()
143 {
144 return 9;
145 }
146
147 /**
148 * Paints the icon.
149 *
150 * @param c the component to be painted
151 * @param g the Graphics context to be painted with
152 * @param x the x position of the icon
153 * @param y the y position of the icon
154 */
155 public void paintIcon(Component c, Graphics g, int x, int y)
156 {
157 JCheckBoxMenuItem item = (JCheckBoxMenuItem) c;
158 if (item.isSelected())
159 {
160 // paint the check...
161 g.setColor(Color.black);
162 g.drawLine(x + 1, y + 3, x + 1, y + 4);
163 g.drawLine(x + 2, y + 4, x + 2, y + 5);
164 for (int i = 0; i < 5; i++)
165 g.drawLine(x + 3 + i, y + 5 - i, x + 3 + i, y + 6 - i);
166 }
167 }
168 }
169
170 /**
171 * The icon used for RadioButtons in the BasicLookAndFeel. This is an empty
172 * icon with a size of 13x13 pixels.
173 */
174 static class RadioButtonIcon
175 implements Icon
176 {
177 /**
178 * Returns the height of the icon. The BasicLookAndFeel RadioButton icon
179 * has a height of 13 pixels.
180 *
181 * @return the height of the icon
182 */
183 public int getIconHeight()
184 {
185 return 13;
186 }
187
188 /**
189 * Returns the width of the icon. The BasicLookAndFeel RadioButton icon
190 * has a width of 13 pixels.
191 *
192 * @return the height of the icon
193 */
194 public int getIconWidth()
195 {
196 return 13;
197 }
198
199 /**
200 * Paints the icon. The BasicLookAndFeel RadioButton icon is empty and does
201 * not need to be painted.
202 *
203 * @param c the component to be painted
204 * @param g the Graphics context to be painted with
205 * @param x the x position of the icon
206 * @param y the y position of the icon
207 */
208 public void paintIcon(Component c, Graphics g, int x, int y)
209 {
210 // The icon is empty and needs no painting.
211 }
212 }
213 /** The cached CheckBoxIcon instance. */
214 private static CheckBoxIcon checkBoxIcon;
215
216 /** The cached RadioButtonIcon instance. */
217 private static RadioButtonIcon radioButtonIcon;
218
219 public static Icon getMenuItemCheckIcon()
220 {
221 return new Icon()
222 {
223 public int getIconHeight()
224 {
225 return 13;
226 }
227
228 public int getIconWidth()
229 {
230 return 13;
231 }
232
233 public void paintIcon(Component c, Graphics g, int x, int y)
234 {
235 Color saved = g.getColor();
236 g.setColor(Color.BLACK);
237 g.drawLine(3 + x, 5 + y, 3 + x, 9 + y);
238 g.drawLine(4 + x, 5 + y, 4 + x, 9 + y);
239 g.drawLine(5 + x, 7 + y, 9 + x, 3 + y);
240 g.drawLine(5 + x, 8 + y, 9 + x, 4 + y);
241 g.setColor(saved);
242 }
243 };
244 }
245 public static Icon getMenuItemArrowIcon()
246 {
247 return new DummyIcon();
248 }
249
250 /**
251 * Returns a new instance of a 4 x 8 icon showing a small black triangle that
252 * points to the right. This is displayed in menu items that have a
253 * sub menu.
254 *
255 * @return The icon.
256 */
257 public static Icon getMenuArrowIcon()
258 {
259 return new Icon()
260 {
261 public int getIconHeight()
262 {
263 return 8;
264 }
265 public int getIconWidth()
266 {
267 return 4;
268 }
269 public void paintIcon(Component c, Graphics g, int x, int y)
270 {
271 Color saved = g.getColor();
272 g.setColor(Color.BLACK);
273 for (int i = 0; i < 4; i++)
274 g.drawLine(x + i, y + i, x + i, y + 7 - i);
275 g.setColor(saved);
276 }
277 };
278 }
279
280 /**
281 * Returns an icon for CheckBoxes in the BasicLookAndFeel. CheckBox icons
282 * in the Basic L&F are empty and have a size of 13x13 pixels.
283 * This method returns a shared single instance of this icon.
284 *
285 * @return an icon for CheckBoxes in the BasicLookAndFeel
286 */
287 public static Icon getCheckBoxIcon()
288 {
289 if (checkBoxIcon == null)
290 checkBoxIcon = new CheckBoxIcon();
291 return checkBoxIcon;
292 }
293
294 /**
295 * Returns an icon for RadioButtons in the BasicLookAndFeel. RadioButton
296 * icons in the Basic L&F are empty and have a size of 13x13 pixels.
297 * This method returns a shared single instance of this icon.
298 *
299 * @return an icon for RadioButtons in the BasicLookAndFeel
300 */
301 public static Icon getRadioButtonIcon()
302 {
303 if (radioButtonIcon == null)
304 radioButtonIcon = new RadioButtonIcon();
305 return radioButtonIcon;
306 }
307
308 /**
309 * Creates and returns an icon used when rendering {@link JCheckBoxMenuItem}
310 * components.
311 *
312 * @return An icon.
313 */
314 public static Icon getCheckBoxMenuItemIcon()
315 {
316 return new CheckBoxMenuItemIcon();
317 }
318
319 public static Icon getRadioButtonMenuItemIcon()
320 {
321 return getRadioButtonIcon();
322 }
323
324 public static Icon createEmptyFrameIcon()
325 {
326 return new DummyIcon();
327 }
328 } // class BasicIconFactory