001    /* MetalProgressBarUI.java
002       Copyright (C) 2005 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.Color;
042    import java.awt.Graphics;
043    import java.awt.Insets;
044    
045    import javax.swing.JComponent;
046    import javax.swing.JProgressBar;
047    import javax.swing.plaf.ComponentUI;
048    import javax.swing.plaf.basic.BasicProgressBarUI;
049    
050    /**
051     * A UI delegate for the {@link JProgressBar} component.
052     */
053    public class MetalProgressBarUI extends BasicProgressBarUI
054    {  
055      /**
056       * Constructs a new instance of <code>MetalProgressBarUI</code>.
057       */
058      public MetalProgressBarUI()
059      {
060        super();
061      }
062    
063      /**
064       * Returns a new instance of <code>MetalProgressBarUI</code>.
065       *
066       * @param component the component for which we return an UI instance
067       *
068       * @return A new instance of <code>MetalProgressBarUI</code>.
069       */
070      public static ComponentUI createUI(JComponent component)
071      {
072        return new MetalProgressBarUI();
073      }
074    
075      /**
076       * Performs the painting for determinate progress bars. This calls the
077       * superclass behaviour and then adds some highlighting to the upper and left
078       * edge of the progress bar.
079       *
080       * @param g the graphics context
081       * @param c not used here
082       */
083      public void paintDeterminate(Graphics g, JComponent c)
084      {
085        super.paintDeterminate(g, c);
086        Color saved = g.getColor();
087        Insets i = progressBar.getInsets();
088        int w = progressBar.getWidth();
089        int h = progressBar.getHeight();
090        int orientation = progressBar.getOrientation();
091        
092        Color shadow = MetalLookAndFeel.getControlShadow();
093        g.setColor(shadow);
094    
095        g.drawLine(i.left, i.top, w - i.right, i.top);
096        g.drawLine(i.left, i.top, i.left, h - i.bottom);
097        int full = getAmountFull(i, w, h);
098        if (full > 0)
099          {
100            Color darkShadow = MetalLookAndFeel.getPrimaryControlDarkShadow();
101            g.setColor(darkShadow);
102            if (orientation == JProgressBar.HORIZONTAL)
103              {
104                g.drawLine(i.left, i.top, i.left, h - i.bottom);
105                g.drawLine(i.left, i.top, i.left + full - 1, i.top);
106              }
107            else
108              {
109                if (full >= (h - i.top - i.bottom))
110                  g.drawLine(i.left, i.top, w - i.right, i.top);
111                g.drawLine(i.left, h - i.bottom, i.left, h - i.bottom - full);
112              }
113          }
114        g.setColor(saved);
115      }
116    
117      /**
118       * Performs the painting for indeterminate progress bars. This calls the
119       * superclass behaviour and then adds some highlighting to the upper and left
120       * edge of the progress bar.
121       *
122       * @param g the graphics context
123       * @param c not used here
124       */
125      public void paintIndeterminate(Graphics g, JComponent c)
126      {
127        super.paintIndeterminate(g, c);
128        Color saved = g.getColor();
129        Insets i = progressBar.getInsets();
130        int w = progressBar.getWidth();
131        int h = progressBar.getHeight();
132        Color shadow = MetalLookAndFeel.getControlShadow();
133        g.setColor(shadow);
134        g.drawLine(i.left, i.top, w - i.right, i.top);
135        g.drawLine(i.left, i.top, i.left, h - i.bottom);
136    
137        boxRect = getBox(boxRect);
138        Color darkShadow = MetalLookAndFeel.getPrimaryControlDarkShadow();
139        g.setColor(darkShadow);
140        int orientation = progressBar.getOrientation();
141        if (orientation == JProgressBar.HORIZONTAL)
142          g.drawLine(boxRect.x, i.top, boxRect.x + boxRect.width - 1, i.top);
143        else
144          g.drawLine(i.left, boxRect.y, i.left, boxRect.y + boxRect.height - 1);
145        g.setColor(saved);
146      }
147    }