| /* BasicSeparatorUI.java -- |
| Copyright (C) 2004 Free Software Foundation, Inc. |
| |
| This file is part of GNU Classpath. |
| |
| GNU Classpath is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2, or (at your option) |
| any later version. |
| |
| GNU Classpath 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 for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with GNU Classpath; see the file COPYING. If not, write to the |
| Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
| 02111-1307 USA. |
| |
| Linking this library statically or dynamically with other modules is |
| making a combined work based on this library. Thus, the terms and |
| conditions of the GNU General Public License cover the whole |
| combination. |
| |
| As a special exception, the copyright holders of this library give you |
| permission to link this library with independent modules to produce an |
| executable, regardless of the license terms of these independent |
| modules, and to copy and distribute the resulting executable under |
| terms of your choice, provided that you also meet, for each linked |
| independent module, the terms and conditions of the license of that |
| module. An independent module is a module which is not derived from |
| or based on this library. If you modify this library, you may extend |
| this exception to your version of the library, but you are not |
| obligated to do so. If you do not wish to do so, delete this |
| exception statement from your version. */ |
| |
| |
| package javax.swing.plaf.basic; |
| |
| import java.awt.Color; |
| import java.awt.Dimension; |
| import java.awt.Graphics; |
| import java.awt.Insets; |
| import java.awt.Rectangle; |
| |
| import javax.swing.JComponent; |
| import javax.swing.JSeparator; |
| import javax.swing.SwingUtilities; |
| import javax.swing.UIDefaults; |
| import javax.swing.UIManager; |
| import javax.swing.plaf.ComponentUI; |
| import javax.swing.plaf.SeparatorUI; |
| |
| /** |
| * The Basic Look and Feel UI delegate for JSeparator. |
| */ |
| public class BasicSeparatorUI extends SeparatorUI |
| { |
| /** The shadow color. */ |
| protected Color shadow; |
| |
| /** The highlight color. */ |
| protected Color highlight; |
| |
| /** |
| * Creates a new UI delegate for the given JComponent. |
| * |
| * @param c The JComponent to create a delegate for. |
| * |
| * @return A new BasicSeparatorUI. |
| */ |
| public static ComponentUI createUI(JComponent c) |
| { |
| return new BasicSeparatorUI(); |
| } |
| |
| /** |
| * This method installs the UI for the given JComponent. |
| * This can include installing defaults, listeners, and |
| * initializing any instance data. |
| * |
| * @param c The JComponent that is having this UI installed. |
| */ |
| public void installUI(JComponent c) |
| { |
| super.installUI(c); |
| |
| if (c instanceof JSeparator) |
| { |
| JSeparator s = (JSeparator) c; |
| |
| installDefaults(s); |
| installListeners(s); |
| } |
| } |
| |
| /** |
| * Uninstalls the UI for the given JComponent. This |
| * method reverses what was done when installing |
| * the UI on the JComponent. |
| * |
| * @param c The JComponent that is having this UI uninstalled. |
| */ |
| public void uninstallUI(JComponent c) |
| { |
| if (c instanceof JSeparator) |
| { |
| JSeparator s = (JSeparator) c; |
| |
| uninstallListeners(s); |
| uninstallDefaults(s); |
| } |
| } |
| |
| /** |
| * This method installs the defaults that are given by |
| * the Basic Look and Feel. |
| * |
| * @param s The JSeparator that is being installed. |
| */ |
| protected void installDefaults(JSeparator s) |
| { |
| UIDefaults defaults = UIManager.getLookAndFeelDefaults(); |
| |
| shadow = defaults.getColor("Separator.shadow"); |
| highlight = defaults.getColor("Separator.highlight"); |
| s.setOpaque(true); |
| } |
| |
| /** |
| * This method removes the defaults that were given |
| * by the Basic Look and Feel. |
| * |
| * @param s The JSeparator that is being uninstalled. |
| */ |
| protected void uninstallDefaults(JSeparator s) |
| { |
| shadow = null; |
| highlight = null; |
| } |
| |
| /** |
| * This method installs any listeners that need |
| * to be attached to the JSeparator or any of its |
| * components. |
| * |
| * @param s The JSeparator that is being installed. |
| */ |
| protected void installListeners(JSeparator s) |
| { |
| // Separators don't receive events. |
| } |
| |
| /** |
| * This method uninstalls any listeners that |
| * were installed during the install UI process. |
| * |
| * @param s The JSeparator that is being uninstalled. |
| */ |
| protected void uninstallListeners(JSeparator s) |
| { |
| // Separators don't receive events. |
| } |
| |
| /** |
| * The separator is made of two lines. The top line will be |
| * the highlight color (or left line if it's vertical). The bottom |
| * or right line will be the shadow color. The two lines will |
| * be centered inside the bounds box. If the separator is horizontal, |
| * then it will be vertically centered, or if it's vertical, it will |
| * be horizontally centered. |
| * |
| * @param g The Graphics object to paint with |
| * @param c The JComponent to paint. |
| */ |
| public void paint(Graphics g, JComponent c) |
| { |
| Rectangle r = new Rectangle(); |
| SwingUtilities.calculateInnerArea(c, r); |
| Color saved = g.getColor(); |
| |
| int midAB = r.width / 2 + r.x; |
| int midAD = r.height / 2 + r.y; |
| |
| JSeparator s; |
| if (c instanceof JSeparator) |
| s = (JSeparator) c; |
| else |
| return; |
| |
| if (s.getOrientation() == JSeparator.HORIZONTAL) |
| { |
| g.setColor(highlight); |
| g.drawLine(r.x, midAD, r.x + r.width, midAD); |
| |
| g.setColor(shadow); |
| g.drawLine(r.x, midAD + 1, r.x + r.width, midAD + 1); |
| } |
| else |
| { |
| g.setColor(highlight); |
| g.drawLine(midAB, r.y, midAB, r.y + r.height); |
| |
| g.setColor(shadow); |
| g.drawLine(midAB + 1, r.y, midAB + 1, r.y + r.height); |
| } |
| } |
| |
| /** |
| * This method returns the preferred size of the |
| * JComponent. |
| * |
| * @param c The JComponent to measure. |
| * |
| * @return The preferred size. |
| */ |
| public Dimension getPreferredSize(JComponent c) |
| { |
| Dimension dims = new Dimension(0, 0); |
| Insets insets = c.getInsets(); |
| |
| if (c instanceof JSeparator) |
| { |
| JSeparator s = (JSeparator) c; |
| |
| if (s.getOrientation() == JSeparator.HORIZONTAL) |
| { |
| dims.height = 2; |
| dims.width = 40; |
| } |
| else |
| { |
| dims.width = 2; |
| dims.height = 40; |
| } |
| } |
| dims.width += insets.left + insets.right; |
| dims.height += insets.top + insets.bottom; |
| |
| return dims; |
| } |
| |
| /** |
| * This method returns the minimum size of the |
| * JComponent. |
| * |
| * @param c The JComponent to measure. |
| * |
| * @return The minimum size. |
| */ |
| public Dimension getMinimumSize(JComponent c) |
| { |
| return getPreferredSize(c); |
| } |
| |
| /** |
| * This method returns the maximum size of the |
| * JComponent. |
| * |
| * @param c The JComponent to measure. |
| * |
| * @return The maximum size. |
| */ |
| public Dimension getMaximumSize(JComponent c) |
| { |
| return getPreferredSize(c); |
| } |
| } |