nimrodscrollbarui.java

一个java漂亮外观的源码

/*
 *                 (C) Copyright 2005 Nilo J. Gonzalez
 *
 * This library is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Lesser Gereral Public Licence as published by the Free
 * Software Foundation; either version 2 of the Licence, or (at your opinion) any
 * later version.
 * 
 * This library is distributed in the hope that it will be usefull, but WITHOUT ANY
 * WARRANTY; without even the implied warranty of merchantability or fitness for a
 * particular purpose. See the GNU Lesser General Public Licence for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public Licence along
 * with this library; if not, write to the Free Software Foundation, Inc., 59
 * Temple Place, Suite 330, Boston, Ma 02111-1307 USA.
 *
 * http://www.gnu.org/licenses/lgpl.html (English)
 * http://gugs.sindominio.net/gnu-gpl/lgpl-es.html (Espa駉l)
 *
 *
 * Original author: Nilo J. Gonz醠ez
 */
 
/**
 * Esta clase implementa las barras de scroll.
 * @author Nilo J. Gonzalez
 */ 
 

package com.nilo.plaf.nimrod;

import java.awt.*;
import javax.swing.*;
import javax.swing.plaf.*;
import javax.swing.plaf.metal.*;

public class NimRODScrollBarUI extends MetalScrollBarUI {
  public static ComponentUI createUI( JComponent c)    {
    return new NimRODScrollBarUI();
  }

  protected JButton createDecreaseButton( int orientation) {
    decreaseButton = new NimRODScrollButton( orientation, scrollBarWidth, isFreeStanding);
    return decreaseButton;
  }

  protected JButton createIncreaseButton( int orientation) {
    increaseButton =  new NimRODScrollButton( orientation, scrollBarWidth, isFreeStanding);
    return increaseButton;
  }

  protected void paintThumb( Graphics g, JComponent c, Rectangle thumbBounds) {
    Color thumbColor = UIManager.getColor( "ScrollBar.thumb");
    Color thumbShadow = UIManager.getColor( "ScrollBar.thumbShadow");
    //Color thumbHighlightColor = UIManager.getColor( "ScrollBar.thumbHighlight");
    
    g.translate( thumbBounds.x, thumbBounds.y);
    
    g.setColor( thumbColor);
    g.fillRect( 0, 0, thumbBounds.width - 1, thumbBounds.height - 1 );
 
    g.setColor( thumbShadow );
    g.drawRect( 0, 0, thumbBounds.width - 1, thumbBounds.height - 1 );
    
    
    Icon icono = null;
    if ( scrollbar.getOrientation() == JScrollBar.HORIZONTAL ) {
      icono = UIManager.getIcon( "ScrollBar.horizontalThumbIconImage");
    }
    else {
      icono = UIManager.getIcon( "ScrollBar.verticalThumbIconImage");
    }
    
    int w = icono.getIconWidth();
    int h = icono.getIconHeight();
    int x = (thumbBounds.width - w ) / 2;
    int y = (thumbBounds.height -h ) / 2;

    if ( ((scrollbar.getOrientation() == JScrollBar.HORIZONTAL) && (thumbBounds.width >= w)) 
         ||
         ((scrollbar.getOrientation() == JScrollBar.VERTICAL) && (thumbBounds.height >= h))
        ) {
      icono.paintIcon( c, g, x, y);
    }   
    
    g.translate( -thumbBounds.x, -thumbBounds.y);
    
    Graphics2D g2D = (Graphics2D)g;
    GradientPaint grad = null;
    
    if ( scrollbar.getOrientation() == JScrollBar.HORIZONTAL ) {
      grad = new GradientPaint( thumbBounds.x,thumbBounds.y, NimRODUtils.brillo, 
                                thumbBounds.x,thumbBounds.height, NimRODUtils.sombra);
  	}
    else {
      grad = new GradientPaint( thumbBounds.x,thumbBounds.y, NimRODUtils.brillo, 
                                thumbBounds.width, thumbBounds.y, NimRODUtils.sombra);
    }
    g2D.setPaint( grad);
    g2D.fill( thumbBounds);
  }

  protected void paintTrack( Graphics g, JComponent c, Rectangle trackBounds) {
    super.paintTrack( g, c, trackBounds);
    
    Graphics2D g2D = (Graphics2D)g;
    GradientPaint grad = null;
    
    if ( scrollbar.getOrientation() == JScrollBar.HORIZONTAL ) {
      grad = new GradientPaint( trackBounds.x,trackBounds.y, NimRODUtils.sombra, 
                                trackBounds.x,trackBounds.y + trackBounds.height, NimRODUtils.brillo);
  	}
    else {
      grad = new GradientPaint( trackBounds.x,trackBounds.y, NimRODUtils.sombra, 
                                trackBounds.x + trackBounds.width, trackBounds.y, NimRODUtils.brillo);
    }
    
    g2D.setPaint( grad);
    g2D.fill( trackBounds);
  }
}