001 /* MetalCheckBoxIcon.java -- An icon for JCheckBoxes in the Metal L&F 002 Copyright (C) 2005, 2006 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.metal; 040 041 import java.awt.Component; 042 import java.awt.Graphics; 043 import java.io.Serializable; 044 045 import javax.swing.AbstractButton; 046 import javax.swing.Icon; 047 import javax.swing.SwingConstants; 048 import javax.swing.UIManager; 049 import javax.swing.plaf.UIResource; 050 051 /** 052 * An {@link Icon} used by the {@link MetalCheckBoxUI} class. 053 * 054 * @author Roman Kennke (roman@kennke.org) 055 */ 056 public class MetalCheckBoxIcon 057 implements Icon, UIResource, Serializable 058 { 059 060 /** Used to paint the border of the icon. */ 061 MetalBorders.ButtonBorder border; 062 063 /** 064 * Creates a new MetalCheckBoxIcon instance. 065 */ 066 public MetalCheckBoxIcon() 067 { 068 border = new MetalBorders.ButtonBorder(); 069 } 070 071 /** 072 * Draws the check in the CheckBox. 073 * 074 * @param c the component to draw on 075 * @param g the Graphics context to draw with 076 * @param x the X position 077 * @param y the Y position 078 */ 079 protected void drawCheck(Component c, Graphics g, int x, int y) 080 { 081 if (c.isEnabled()) 082 g.setColor(MetalLookAndFeel.getBlack()); 083 else 084 g.setColor(MetalLookAndFeel.getControlDisabled()); 085 g.drawLine(3 + x, 5 + y, 3 + x, 9 + y); 086 g.drawLine(4 + x, 5 + y, 4 + x, 9 + y); 087 g.drawLine(5 + x, 7 + y, 9 + x, 3 + y); 088 g.drawLine(5 + x, 8 + y, 9 + x, 4 + y); 089 } 090 091 /** 092 * Returns the size (both X and Y) of the checkbox icon. 093 * 094 * @return the size of the checkbox icon 095 */ 096 protected int getControlSize() 097 { 098 return 13; 099 } 100 101 /** 102 * Returns the width of the icon in pixels. 103 * 104 * @return the width of the icon in pixels 105 */ 106 public int getIconWidth() 107 { 108 return getControlSize(); 109 } 110 111 /** 112 * Returns the height of the icon in pixels. 113 * 114 * @return the height of the icon in pixels 115 */ 116 public int getIconHeight() 117 { 118 return getControlSize(); 119 } 120 121 /** 122 * Paints the icon. This first paints the border of the CheckBox and 123 * if the CheckBox is selected it calls {@link #drawCheck} to draw 124 * the check. 125 * 126 * @param c the Component to draw on (gets casted to JCheckBox) 127 * @param g the Graphics context to draw with 128 * @param x the X position 129 * @param y the Y position 130 */ 131 public void paintIcon(Component c, Graphics g, int x, int y) 132 { 133 if (UIManager.get("CheckBox.gradient") != null) 134 MetalUtils.paintGradient(g, x, y, getIconWidth(), getIconHeight(), 135 SwingConstants.VERTICAL, "CheckBox.gradient"); 136 border.paintBorder(c, g, x, y, getIconWidth(), getIconHeight()); 137 138 AbstractButton b = (AbstractButton) c; 139 if (b.isSelected()) 140 drawCheck(b, g, x, y); 141 } 142 }