Master/Reference Architectures and Patterns/hjp5/examples/BitmapComponent.java


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45

/* BitmapComponent.java */

import java.awt.*;

class BitmapComponent
extends Canvas
{
  private Image img;

  public BitmapComponent(String fname)
  {
    img = getToolkit().getImage(fname);
    MediaTracker mt = new MediaTracker(this);

    mt.addImage(img, 0);
    try {
      //Warten, bis das Image vollst�ndig geladen ist,
      //damit getWidth() und getHeight() funktionieren
      mt.waitForAll();
    } catch (InterruptedException e) {
      //nothing
    }
  }

  public void paint(Graphics g)
  {
    g.drawImage(img,1,1,this);
  }

  public Dimension getPreferredSize()
  {
    return new Dimension(
      img.getWidth(this),
      img.getHeight(this)
    );
  }

  public Dimension getMinimumSize()
  {
    return new Dimension(
      img.getWidth(this),
      img.getHeight(this)
    );
  }
}