001/* MetalCheckBoxIcon.java -- An icon for JCheckBoxes in the Metal L&F 002 Copyright (C) 2005, 2006 Free Software Foundation, Inc. 003 004This file is part of GNU Classpath. 005 006GNU Classpath is free software; you can redistribute it and/or modify 007it under the terms of the GNU General Public License as published by 008the Free Software Foundation; either version 2, or (at your option) 009any later version. 010 011GNU Classpath is distributed in the hope that it will be useful, but 012WITHOUT ANY WARRANTY; without even the implied warranty of 013MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 014General Public License for more details. 015 016You should have received a copy of the GNU General Public License 017along with GNU Classpath; see the file COPYING. If not, write to the 018Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 01902110-1301 USA. 020 021Linking this library statically or dynamically with other modules is 022making a combined work based on this library. Thus, the terms and 023conditions of the GNU General Public License cover the whole 024combination. 025 026As a special exception, the copyright holders of this library give you 027permission to link this library with independent modules to produce an 028executable, regardless of the license terms of these independent 029modules, and to copy and distribute the resulting executable under 030terms of your choice, provided that you also meet, for each linked 031independent module, the terms and conditions of the license of that 032module. An independent module is a module which is not derived from 033or based on this library. If you modify this library, you may extend 034this exception to your version of the library, but you are not 035obligated to do so. If you do not wish to do so, delete this 036exception statement from your version. */ 037 038 039package javax.swing.plaf.metal; 040 041import java.awt.Component; 042import java.awt.Graphics; 043import java.io.Serializable; 044 045import javax.swing.AbstractButton; 046import javax.swing.Icon; 047import javax.swing.SwingConstants; 048import javax.swing.UIManager; 049import 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 */ 056public 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}