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