/* * @(#)BasicIconFactory.java	1.27 03/12/19 * * Copyright 2004 Sun Microsystems, Inc. All rights reserved. * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms. */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}. * * @version 1.27 12/19/03 * @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}