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      1 /*
      2  * ProGuard -- shrinking, optimization, obfuscation, and preverification
      3  *             of Java bytecode.
      4  *
      5  * Copyright (c) 2002-2009 Eric Lafortune (eric (at) graphics.cornell.edu)
      6  *
      7  * This program is free software; you can redistribute it and/or modify it
      8  * under the terms of the GNU General Public License as published by the Free
      9  * Software Foundation; either version 2 of the License, or (at your option)
     10  * any later version.
     11  *
     12  * This program is distributed in the hope that it will be useful, but WITHOUT
     13  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
     14  * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
     15  * more details.
     16  *
     17  * You should have received a copy of the GNU General Public License along
     18  * with this program; if not, write to the Free Software Foundation, Inc.,
     19  * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
     20  */
     21 package proguard.gui.splash;
     22 
     23 import java.awt.*;
     24 
     25 /**
     26  * This Sprite displays another Sprite in a given time interval.
     27  * The time of the encapsulated Sprite is shifted by the start time.
     28  *
     29  * @author Eric Lafortune
     30  */
     31 public class TimeSwitchSprite implements Sprite
     32 {
     33     private final long   onTime;
     34     private final long offTime;
     35     private final Sprite sprite;
     36 
     37 
     38     /**
     39      * Creates a new TimeSwitchSprite for displaying a given Sprite starting at
     40      * a given time.
     41      * @param onTime the start time.
     42      * @param sprite the toggled Sprite.
     43      */
     44     public TimeSwitchSprite(long onTime, Sprite sprite)
     45     {
     46         this(onTime, 0L, sprite);
     47     }
     48 
     49 
     50     /**
     51      * Creates a new TimeSwitchSprite for displaying a given Sprite in a given
     52      * time interval.
     53      * @param onTime  the start time.
     54      * @param offTime the stop time.
     55      * @param sprite  the toggled Sprite.
     56      */
     57     public TimeSwitchSprite(long onTime, long offTime, Sprite sprite)
     58     {
     59         this.onTime  = onTime;
     60         this.offTime = offTime;
     61         this.sprite  = sprite;
     62     }
     63 
     64 
     65     // Implementation for Sprite.
     66 
     67     public void paint(Graphics graphics, long time)
     68     {
     69         if (time >= onTime && (offTime <= 0 || time <= offTime))
     70         {
     71             sprite.paint(graphics, time - onTime);
     72         }
     73 
     74     }
     75 }
     76