Docjar: com/flexstor/common/awt/LogoCanvas.java

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Source code: com/flexstor/common/awt/LogoCanvas.java

1   /*
2    * LogoCanvas.java
3    *
4    * Copyright $Date: 2003/08/11 02:22:32 $ FLEXSTOR.net Inc.
5    *
6    * This work is licensed for use and distribution under license terms found at
7    * http://www.flexstor.org/license.html
8    *
9    */
10  
11  package com.flexstor.common.awt;
12  
13  import java.awt.Canvas;
14  import java.awt.Graphics;
15  import java.awt.Image;
16  import java.awt.MediaTracker;
17  import java.io.FileNotFoundException;
18  import java.net.MalformedURLException;
19  import java.net.URL;
20  
21  public class LogoCanvas
22     extends Canvas
23  {
24     private Image imgLogo = null;
25  
26     public LogoCanvas ( String sPath )
27        throws FileNotFoundException
28     {
29        try
30        {
31           imgLogo = getToolkit().getImage ( new URL(sPath) );
32  
33           if (imgLogo == null)
34              return; 
35  
36           MediaTracker tracker = new MediaTracker(this);
37           tracker.addImage(imgLogo, 0);
38  
39           try
40           {
41            tracker.waitForID(0);
42           }
43           catch(InterruptedException e)  { }
44  
45           if ((tracker.statusAll(false) & MediaTracker.ERRORED) != 0)
46              throw new FileNotFoundException ( "Error loading " + sPath );
47         else
48            setSize(imgLogo.getWidth(null), imgLogo.getHeight(null));
49        }
50        catch ( MalformedURLException m )
51        {
52           throw new FileNotFoundException ( "Error loading " + sPath );
53        }
54     }
55  
56     public void paint(Graphics g)
57     {
58        if (imgLogo != null)
59        {
60           g.drawImage(imgLogo,
61                       Math.max(0, (getSize().width  - imgLogo.getWidth(null)) / 2),
62                       Math.max(0, (getSize().height - imgLogo.getHeight(null)) / 2),
63                       this);
64        }
65     }
66  }