Source for javax.swing.plaf.metal.MetalProgressBarUI

   1: /* MetalProgressBarUI.java
   2:    Copyright (C) 2005 Free Software Foundation, Inc.
   3: 
   4: This file is part of GNU Classpath.
   5: 
   6: GNU Classpath is free software; you can redistribute it and/or modify
   7: it under the terms of the GNU General Public License as published by
   8: the Free Software Foundation; either version 2, or (at your option)
   9: any later version.
  10: 
  11: GNU Classpath is distributed in the hope that it will be useful, but
  12: WITHOUT ANY WARRANTY; without even the implied warranty of
  13: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14: General Public License for more details.
  15: 
  16: You should have received a copy of the GNU General Public License
  17: along with GNU Classpath; see the file COPYING.  If not, write to the
  18: Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  19: 02110-1301 USA.
  20: 
  21: Linking this library statically or dynamically with other modules is
  22: making a combined work based on this library.  Thus, the terms and
  23: conditions of the GNU General Public License cover the whole
  24: combination.
  25: 
  26: As a special exception, the copyright holders of this library give you
  27: permission to link this library with independent modules to produce an
  28: executable, regardless of the license terms of these independent
  29: modules, and to copy and distribute the resulting executable under
  30: terms of your choice, provided that you also meet, for each linked
  31: independent module, the terms and conditions of the license of that
  32: module.  An independent module is a module which is not derived from
  33: or based on this library.  If you modify this library, you may extend
  34: this exception to your version of the library, but you are not
  35: obligated to do so.  If you do not wish to do so, delete this
  36: exception statement from your version. */
  37: 
  38: 
  39: package javax.swing.plaf.metal;
  40: 
  41: import java.awt.Color;
  42: import java.awt.Graphics;
  43: import java.awt.Insets;
  44: 
  45: import javax.swing.JComponent;
  46: import javax.swing.JProgressBar;
  47: import javax.swing.plaf.ComponentUI;
  48: import javax.swing.plaf.basic.BasicProgressBarUI;
  49: 
  50: /**
  51:  * A UI delegate for the {@link JProgressBar} component.
  52:  */
  53: public class MetalProgressBarUI extends BasicProgressBarUI
  54: {  
  55:   /**
  56:    * Constructs a new instance of <code>MetalProgressBarUI</code>.
  57:    */
  58:   public MetalProgressBarUI()
  59:   {
  60:     super();
  61:   }
  62: 
  63:   /**
  64:    * Returns a new instance of <code>MetalProgressBarUI</code>.
  65:    *
  66:    * @param component the component for which we return an UI instance
  67:    *
  68:    * @return A new instance of <code>MetalProgressBarUI</code>.
  69:    */
  70:   public static ComponentUI createUI(JComponent component)
  71:   {
  72:     return new MetalProgressBarUI();
  73:   }
  74: 
  75:   /**
  76:    * Performs the painting for determinate progress bars. This calls the
  77:    * superclass behaviour and then adds some highlighting to the upper and left
  78:    * edge of the progress bar.
  79:    *
  80:    * @param g the graphics context
  81:    * @param c not used here
  82:    */
  83:   public void paintDeterminate(Graphics g, JComponent c)
  84:   {
  85:     super.paintDeterminate(g, c);
  86:     Color saved = g.getColor();
  87:     Insets i = progressBar.getInsets();
  88:     int w = progressBar.getWidth();
  89:     int h = progressBar.getHeight();
  90:     int orientation = progressBar.getOrientation();
  91:     
  92:     Color shadow = MetalLookAndFeel.getControlShadow();
  93:     g.setColor(shadow);
  94: 
  95:     g.drawLine(i.left, i.top, w - i.right, i.top);
  96:     g.drawLine(i.left, i.top, i.left, h - i.bottom);
  97:     int full = getAmountFull(i, w, h);
  98:     if (full > 0)
  99:       {
 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: }