/* * Copyright (c) 1997, 2001, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation.  Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ package javax.swing.plaf.basic; import javax.swing.*;import javax.swing.plaf.UIResource; import java.awt.Graphics;import java.awt.Color;import java.awt.Component;import java.awt.Polygon;import java.io.Serializable; /** * Factory object that can vend Icons appropriate for the basic L & F. * <p> * <strong>Warning:</strong> * Serialized objects of this class will not be compatible with * future Swing releases. The current serialization support is * appropriate for short term storage or RMI between applications running * the same version of Swing.  As of 1.4, support for long term storage * of all JavaBeans<sup><font size="-2">TM</font></sup> * has been added to the <code>java.beans</code> package. * Please see {@link java.beans.XMLEncoder}. * * @author David Kloba * @author Georges Saab */public class BasicIconFactory implements Serializable{    private static Icon frame_icon;    private static Icon checkBoxIcon;    private static Icon radioButtonIcon;    private static Icon checkBoxMenuItemIcon;    private static Icon radioButtonMenuItemIcon;    private static Icon menuItemCheckIcon;    private static Icon menuItemArrowIcon;    private static Icon menuArrowIcon;     public static Icon getMenuItemCheckIcon() {        if (menuItemCheckIcon == null) {            menuItemCheckIcon = new MenuItemCheckIcon();        }        return menuItemCheckIcon;    }     public static Icon getMenuItemArrowIcon() {        if (menuItemArrowIcon == null) {            menuItemArrowIcon = new MenuItemArrowIcon();        }        return menuItemArrowIcon;    }     public static Icon getMenuArrowIcon() {        if (menuArrowIcon == null) {            menuArrowIcon = new MenuArrowIcon();        }        return menuArrowIcon;    }     public static Icon getCheckBoxIcon() {        if (checkBoxIcon == null) {            checkBoxIcon = new CheckBoxIcon();        }        return checkBoxIcon;    }     public static Icon getRadioButtonIcon() {        if (radioButtonIcon == null) {            radioButtonIcon = new RadioButtonIcon();        }        return radioButtonIcon;    }     public static Icon getCheckBoxMenuItemIcon() {        if (checkBoxMenuItemIcon == null) {            checkBoxMenuItemIcon = new CheckBoxMenuItemIcon();        }        return checkBoxMenuItemIcon;    }     public static Icon getRadioButtonMenuItemIcon() {        if (radioButtonMenuItemIcon == null) {            radioButtonMenuItemIcon = new RadioButtonMenuItemIcon();        }        return radioButtonMenuItemIcon;    }     public static Icon createEmptyFrameIcon() {        if(frame_icon == null)            frame_icon = new EmptyFrameIcon();        return frame_icon;    }     private static class EmptyFrameIcon implements Icon, Serializable {        int height = 16;        int width = 14;        public void paintIcon(Component c, Graphics g, int x, int y) {        }        public int getIconWidth() { return width; }        public int getIconHeight() { return height; }    };     private static class CheckBoxIcon implements Icon, Serializable    {        final static int csize = 13;        public void paintIcon(Component c, Graphics g, int x, int y) {        }         public int getIconWidth() {            return csize;        }         public int getIconHeight() {            return csize;        }    }     private static class RadioButtonIcon implements Icon, UIResource, Serializable    {        public void paintIcon(Component c, Graphics g, int x, int y) {        }         public int getIconWidth() {            return 13;        }         public int getIconHeight() {            return 13;        }    } // end class RadioButtonIcon      private static class CheckBoxMenuItemIcon implements Icon, UIResource, Serializable    {        public void paintIcon(Component c, Graphics g, int x, int y) {            AbstractButton b = (AbstractButton) c;            ButtonModel model = b.getModel();            boolean isSelected = model.isSelected();            if (isSelected) {                g.drawLine(x+7, y+1, x+7, y+3);                g.drawLine(x+6, y+2, x+6, y+4);                g.drawLine(x+5, y+3, x+5, y+5);                g.drawLine(x+4, y+4, x+4, y+6);                g.drawLine(x+3, y+5, x+3, y+7);                g.drawLine(x+2, y+4, x+2, y+6);                g.drawLine(x+1, y+3, x+1, y+5);            }        }        public int getIconWidth() { return 9; }        public int getIconHeight() { return 9; }     } // End class CheckBoxMenuItemIcon      private static class RadioButtonMenuItemIcon implements Icon, UIResource, Serializable    {        public void paintIcon(Component c, Graphics g, int x, int y) {            AbstractButton b = (AbstractButton) c;            ButtonModel model = b.getModel();            if (b.isSelected() == true) {                g.fillOval(x+1, y+1, getIconWidth(), getIconHeight());            }        }        public int getIconWidth() { return 6; }        public int getIconHeight() { return 6; }     } // End class RadioButtonMenuItemIcon      private static class MenuItemCheckIcon implements Icon, UIResource, Serializable{        public void paintIcon(Component c, Graphics g, int x, int y) {        }        public int getIconWidth() { return 9; }        public int getIconHeight() { return 9; }     } // End class MenuItemCheckIcon     private static class MenuItemArrowIcon implements Icon, UIResource, Serializable {        public void paintIcon(Component c, Graphics g, int x, int y) {        }        public int getIconWidth() { return 4; }        public int getIconHeight() { return 8; }     } // End class MenuItemArrowIcon     private static class MenuArrowIcon implements Icon, UIResource, Serializable {        public void paintIcon(Component c, Graphics g, int x, int y) {            Polygon p = new Polygon();            p.addPoint(x, y);            p.addPoint(x+getIconWidth(), y+getIconHeight()/2);            p.addPoint(x, y+getIconHeight());            g.fillPolygon(p);         }        public int getIconWidth() { return 4; }        public int getIconHeight() { return 8; }    } // End class MenuArrowIcon}